1c609719bSwdenk# 2eca3aeb3SWolfgang Denk# (C) Copyright 2000 - 2013 3c609719bSwdenk# Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4c609719bSwdenk# 5eca3aeb3SWolfgang Denk# SPDX-License-Identifier: GPL-2.0+ 6c609719bSwdenk# 7c609719bSwdenk 8c609719bSwdenkSummary: 9c609719bSwdenk======== 10c609719bSwdenk 1124ee89b9SwdenkThis directory contains the source code for U-Boot, a boot loader for 12e86e5a07SwdenkEmbedded boards based on PowerPC, ARM, MIPS and several other 13e86e5a07Swdenkprocessors, which can be installed in a boot ROM and used to 14e86e5a07Swdenkinitialize and test the hardware or to download and run application 15e86e5a07Swdenkcode. 16c609719bSwdenk 17c609719bSwdenkThe development of U-Boot is closely related to Linux: some parts of 1824ee89b9Swdenkthe source code originate in the Linux source tree, we have some 1924ee89b9Swdenkheader files in common, and special provision has been made to 20c609719bSwdenksupport booting of Linux images. 21c609719bSwdenk 22c609719bSwdenkSome attention has been paid to make this software easily 23c609719bSwdenkconfigurable and extendable. For instance, all monitor commands are 24c609719bSwdenkimplemented with the same call interface, so that it's very easy to 25c609719bSwdenkadd new commands. Also, instead of permanently adding rarely used 26c609719bSwdenkcode (for instance hardware test utilities) to the monitor, you can 27c609719bSwdenkload and run it dynamically. 28c609719bSwdenk 29c609719bSwdenk 30c609719bSwdenkStatus: 31c609719bSwdenk======= 32c609719bSwdenk 33c609719bSwdenkIn general, all boards for which a configuration option exists in the 34c609719bSwdenkMakefile have been tested to some extent and can be considered 35c609719bSwdenk"working". In fact, many of them are used in production systems. 36c609719bSwdenk 37c609719bSwdenkIn case of problems see the CHANGELOG and CREDITS files to find out 3827af930eSAlbert ARIBAUDwho contributed the specific port. The boards.cfg file lists board 39218ca724SWolfgang Denkmaintainers. 40c609719bSwdenk 41adb9d851SRobert P. J. DayNote: There is no CHANGELOG file in the actual U-Boot source tree; 42adb9d851SRobert P. J. Dayit can be created dynamically from the Git log using: 43adb9d851SRobert P. J. Day 44adb9d851SRobert P. J. Day make CHANGELOG 45adb9d851SRobert P. J. Day 46c609719bSwdenk 47c609719bSwdenkWhere to get help: 48c609719bSwdenk================== 49c609719bSwdenk 50c609719bSwdenkIn case you have questions about, problems with or contributions for 51c609719bSwdenkU-Boot you should send a message to the U-Boot mailing list at 520c32565fSPeter Tyser<u-boot@lists.denx.de>. There is also an archive of previous traffic 530c32565fSPeter Tyseron the mailing list - please search the archive before asking FAQ's. 540c32565fSPeter TyserPlease see http://lists.denx.de/pipermail/u-boot and 550c32565fSPeter Tyserhttp://dir.gmane.org/gmane.comp.boot-loaders.u-boot 56c609719bSwdenk 57c609719bSwdenk 58218ca724SWolfgang DenkWhere to get source code: 59218ca724SWolfgang Denk========================= 60218ca724SWolfgang Denk 61218ca724SWolfgang DenkThe U-Boot source code is maintained in the git repository at 62218ca724SWolfgang Denkgit://www.denx.de/git/u-boot.git ; you can browse it online at 63218ca724SWolfgang Denkhttp://www.denx.de/cgi-bin/gitweb.cgi?p=u-boot.git;a=summary 64218ca724SWolfgang Denk 65218ca724SWolfgang DenkThe "snapshot" links on this page allow you to download tarballs of 6611ccc33fSMarcel Ziswilerany version you might be interested in. Official releases are also 67218ca724SWolfgang Denkavailable for FTP download from the ftp://ftp.denx.de/pub/u-boot/ 68218ca724SWolfgang Denkdirectory. 69218ca724SWolfgang Denk 70d4ee711dSAnatolij GustschinPre-built (and tested) images are available from 71218ca724SWolfgang Denkftp://ftp.denx.de/pub/u-boot/images/ 72218ca724SWolfgang Denk 73218ca724SWolfgang Denk 74c609719bSwdenkWhere we come from: 75c609719bSwdenk=================== 76c609719bSwdenk 77c609719bSwdenk- start from 8xxrom sources 7824ee89b9Swdenk- create PPCBoot project (http://sourceforge.net/projects/ppcboot) 79c609719bSwdenk- clean up code 80c609719bSwdenk- make it easier to add custom boards 81c609719bSwdenk- make it possible to add other [PowerPC] CPUs 82c609719bSwdenk- extend functions, especially: 83c609719bSwdenk * Provide extended interface to Linux boot loader 84c609719bSwdenk * S-Record download 85c609719bSwdenk * network boot 8611ccc33fSMarcel Ziswiler * PCMCIA / CompactFlash / ATA disk / SCSI ... boot 8724ee89b9Swdenk- create ARMBoot project (http://sourceforge.net/projects/armboot) 88c609719bSwdenk- add other CPU families (starting with ARM) 8924ee89b9Swdenk- create U-Boot project (http://sourceforge.net/projects/u-boot) 900d28f34bSMagnus Lilja- current project page: see http://www.denx.de/wiki/U-Boot 9124ee89b9Swdenk 9224ee89b9Swdenk 9324ee89b9SwdenkNames and Spelling: 9424ee89b9Swdenk=================== 9524ee89b9Swdenk 9624ee89b9SwdenkThe "official" name of this project is "Das U-Boot". The spelling 9724ee89b9Swdenk"U-Boot" shall be used in all written text (documentation, comments 9824ee89b9Swdenkin source files etc.). Example: 9924ee89b9Swdenk 10024ee89b9Swdenk This is the README file for the U-Boot project. 10124ee89b9Swdenk 10224ee89b9SwdenkFile names etc. shall be based on the string "u-boot". Examples: 10324ee89b9Swdenk 10424ee89b9Swdenk include/asm-ppc/u-boot.h 10524ee89b9Swdenk 10624ee89b9Swdenk #include <asm/u-boot.h> 10724ee89b9Swdenk 10824ee89b9SwdenkVariable names, preprocessor constants etc. shall be either based on 10924ee89b9Swdenkthe string "u_boot" or on "U_BOOT". Example: 11024ee89b9Swdenk 11124ee89b9Swdenk U_BOOT_VERSION u_boot_logo 11224ee89b9Swdenk IH_OS_U_BOOT u_boot_hush_start 113c609719bSwdenk 114c609719bSwdenk 11593f19cc0SwdenkVersioning: 11693f19cc0Swdenk=========== 11793f19cc0Swdenk 118360d883aSThomas WeberStarting with the release in October 2008, the names of the releases 119360d883aSThomas Weberwere changed from numerical release numbers without deeper meaning 120360d883aSThomas Weberinto a time stamp based numbering. Regular releases are identified by 121360d883aSThomas Webernames consisting of the calendar year and month of the release date. 122360d883aSThomas WeberAdditional fields (if present) indicate release candidates or bug fix 123360d883aSThomas Weberreleases in "stable" maintenance trees. 12493f19cc0Swdenk 125360d883aSThomas WeberExamples: 126360d883aSThomas Weber U-Boot v2009.11 - Release November 2009 127360d883aSThomas Weber U-Boot v2009.11.1 - Release 1 in version November 2009 stable tree 128360d883aSThomas Weber U-Boot v2010.09-rc1 - Release candiate 1 for September 2010 release 12993f19cc0Swdenk 13093f19cc0Swdenk 131c609719bSwdenkDirectory Hierarchy: 132c609719bSwdenk==================== 133c609719bSwdenk 1348d321b81SPeter Tyser/arch Architecture specific files 1356eae68e4SMasahiro Yamada /arc Files generic to ARC architecture 1366eae68e4SMasahiro Yamada /cpu CPU specific files 1376eae68e4SMasahiro Yamada /arc700 Files specific to ARC 700 CPUs 1386eae68e4SMasahiro Yamada /lib Architecture specific library files 1398d321b81SPeter Tyser /arm Files generic to ARM architecture 1408d321b81SPeter Tyser /cpu CPU specific files 1418d321b81SPeter Tyser /arm720t Files specific to ARM 720 CPUs 1428d321b81SPeter Tyser /arm920t Files specific to ARM 920 CPUs 1436eb0921aSAndreas Bießmann /at91 Files specific to Atmel AT91RM9200 CPU 1448d321b81SPeter Tyser /imx Files specific to Freescale MC9328 i.MX CPUs 1458d321b81SPeter Tyser /s3c24x0 Files specific to Samsung S3C24X0 CPUs 1468d321b81SPeter Tyser /arm926ejs Files specific to ARM 926 CPUs 1478d321b81SPeter Tyser /arm1136 Files specific to ARM 1136 CPUs 1488d321b81SPeter Tyser /pxa Files specific to Intel XScale PXA CPUs 1498d321b81SPeter Tyser /sa1100 Files specific to Intel StrongARM SA1100 CPUs 1508d321b81SPeter Tyser /lib Architecture specific library files 1518d321b81SPeter Tyser /avr32 Files generic to AVR32 architecture 1528d321b81SPeter Tyser /cpu CPU specific files 1538d321b81SPeter Tyser /lib Architecture specific library files 1548d321b81SPeter Tyser /blackfin Files generic to Analog Devices Blackfin architecture 1558d321b81SPeter Tyser /cpu CPU specific files 1568d321b81SPeter Tyser /lib Architecture specific library files 1578d321b81SPeter Tyser /m68k Files generic to m68k architecture 1588d321b81SPeter Tyser /cpu CPU specific files 1598d321b81SPeter Tyser /mcf52x2 Files specific to Freescale ColdFire MCF52x2 CPUs 1608d321b81SPeter Tyser /mcf5227x Files specific to Freescale ColdFire MCF5227x CPUs 1618d321b81SPeter Tyser /mcf532x Files specific to Freescale ColdFire MCF5329 CPUs 1628d321b81SPeter Tyser /mcf5445x Files specific to Freescale ColdFire MCF5445x CPUs 1638d321b81SPeter Tyser /mcf547x_8x Files specific to Freescale ColdFire MCF547x_8x CPUs 1648d321b81SPeter Tyser /lib Architecture specific library files 1658d321b81SPeter Tyser /microblaze Files generic to microblaze architecture 1668d321b81SPeter Tyser /cpu CPU specific files 1678d321b81SPeter Tyser /lib Architecture specific library files 1688d321b81SPeter Tyser /mips Files generic to MIPS architecture 1698d321b81SPeter Tyser /cpu CPU specific files 17092bbd64eSDaniel Schwierzeck /mips32 Files specific to MIPS32 CPUs 1716eae68e4SMasahiro Yamada /mips64 Files specific to MIPS64 CPUs 1728d321b81SPeter Tyser /lib Architecture specific library files 173afc1ce82SMacpaul Lin /nds32 Files generic to NDS32 architecture 174afc1ce82SMacpaul Lin /cpu CPU specific files 175afc1ce82SMacpaul Lin /n1213 Files specific to Andes Technology N1213 CPUs 176afc1ce82SMacpaul Lin /lib Architecture specific library files 1778d321b81SPeter Tyser /nios2 Files generic to Altera NIOS2 architecture 1788d321b81SPeter Tyser /cpu CPU specific files 1798d321b81SPeter Tyser /lib Architecture specific library files 18033c7731bSRobert P. J. Day /openrisc Files generic to OpenRISC architecture 18133c7731bSRobert P. J. Day /cpu CPU specific files 18233c7731bSRobert P. J. Day /lib Architecture specific library files 183a47a12beSStefan Roese /powerpc Files generic to PowerPC architecture 1848d321b81SPeter Tyser /cpu CPU specific files 1858d321b81SPeter Tyser /74xx_7xx Files specific to Freescale MPC74xx and 7xx CPUs 1868d321b81SPeter Tyser /mpc5xx Files specific to Freescale MPC5xx CPUs 1878d321b81SPeter Tyser /mpc5xxx Files specific to Freescale MPC5xxx CPUs 1888d321b81SPeter Tyser /mpc8xx Files specific to Freescale MPC8xx CPUs 1898d321b81SPeter Tyser /mpc824x Files specific to Freescale MPC824x CPUs 1908d321b81SPeter Tyser /mpc8260 Files specific to Freescale MPC8260 CPUs 1918d321b81SPeter Tyser /mpc85xx Files specific to Freescale MPC85xx CPUs 1928d321b81SPeter Tyser /ppc4xx Files specific to AMCC PowerPC 4xx CPUs 1938d321b81SPeter Tyser /lib Architecture specific library files 1948d321b81SPeter Tyser /sh Files generic to SH architecture 1958d321b81SPeter Tyser /cpu CPU specific files 1968d321b81SPeter Tyser /sh2 Files specific to sh2 CPUs 1978d321b81SPeter Tyser /sh3 Files specific to sh3 CPUs 1988d321b81SPeter Tyser /sh4 Files specific to sh4 CPUs 1998d321b81SPeter Tyser /lib Architecture specific library files 2008d321b81SPeter Tyser /sparc Files generic to SPARC architecture 2018d321b81SPeter Tyser /cpu CPU specific files 2028d321b81SPeter Tyser /leon2 Files specific to Gaisler LEON2 SPARC CPU 2038d321b81SPeter Tyser /leon3 Files specific to Gaisler LEON3 SPARC CPU 2048d321b81SPeter Tyser /lib Architecture specific library files 20533c7731bSRobert P. J. Day /x86 Files generic to x86 architecture 20633c7731bSRobert P. J. Day /cpu CPU specific files 20733c7731bSRobert P. J. Day /lib Architecture specific library files 2088d321b81SPeter Tyser/api Machine/arch independent API for external apps 2098d321b81SPeter Tyser/board Board dependent files 2108d321b81SPeter Tyser/common Misc architecture independent functions 2118d321b81SPeter Tyser/disk Code for disk drive partition handling 2128d321b81SPeter Tyser/doc Documentation (don't expect too much) 2138d321b81SPeter Tyser/drivers Commonly used device drivers 21433c7731bSRobert P. J. Day/dts Contains Makefile for building internal U-Boot fdt. 2158d321b81SPeter Tyser/examples Example code for standalone applications, etc. 2168d321b81SPeter Tyser/fs Filesystem code (cramfs, ext2, jffs2, etc.) 2178d321b81SPeter Tyser/include Header Files 2188d321b81SPeter Tyser/lib Files generic to all architectures 2198d321b81SPeter Tyser /libfdt Library files to support flattened device trees 2208d321b81SPeter Tyser /lzma Library files to support LZMA decompression 2218d321b81SPeter Tyser /lzo Library files to support LZO decompression 2228d321b81SPeter Tyser/net Networking code 2238d321b81SPeter Tyser/post Power On Self Test 22433c7731bSRobert P. J. Day/spl Secondary Program Loader framework 2258d321b81SPeter Tyser/tools Tools to build S-Record or U-Boot images, etc. 226c609719bSwdenk 227c609719bSwdenkSoftware Configuration: 228c609719bSwdenk======================= 229c609719bSwdenk 230c609719bSwdenkConfiguration is usually done using C preprocessor defines; the 231c609719bSwdenkrationale behind that is to avoid dead code whenever possible. 232c609719bSwdenk 233c609719bSwdenkThere are two classes of configuration variables: 234c609719bSwdenk 235c609719bSwdenk* Configuration _OPTIONS_: 236c609719bSwdenk These are selectable by the user and have names beginning with 237c609719bSwdenk "CONFIG_". 238c609719bSwdenk 239c609719bSwdenk* Configuration _SETTINGS_: 240c609719bSwdenk These depend on the hardware etc. and should not be meddled with if 241c609719bSwdenk you don't know what you're doing; they have names beginning with 2426d0f6bcfSJean-Christophe PLAGNIOL-VILLARD "CONFIG_SYS_". 243c609719bSwdenk 244c609719bSwdenkLater we will add a configuration tool - probably similar to or even 245c609719bSwdenkidentical to what's used for the Linux kernel. Right now, we have to 246c609719bSwdenkdo the configuration by hand, which means creating some symbolic 247c609719bSwdenklinks and editing some configuration files. We use the TQM8xxL boards 248c609719bSwdenkas an example here. 249c609719bSwdenk 250c609719bSwdenk 251c609719bSwdenkSelection of Processor Architecture and Board Type: 252c609719bSwdenk--------------------------------------------------- 253c609719bSwdenk 254c609719bSwdenkFor all supported boards there are ready-to-use default 255ab584d67SHolger Freytherconfigurations available; just type "make <board_name>_defconfig". 256c609719bSwdenk 257c609719bSwdenkExample: For a TQM823L module type: 258c609719bSwdenk 259c609719bSwdenk cd u-boot 260ab584d67SHolger Freyther make TQM823L_defconfig 261c609719bSwdenk 26211ccc33fSMarcel ZiswilerFor the Cogent platform, you need to specify the CPU type as well; 263ab584d67SHolger Freythere.g. "make cogent_mpc8xx_defconfig". And also configure the cogent 264c609719bSwdenkdirectory according to the instructions in cogent/README. 265c609719bSwdenk 266c609719bSwdenk 26775b3c3aaSSimon GlassSandbox Environment: 26875b3c3aaSSimon Glass-------------------- 26975b3c3aaSSimon Glass 27075b3c3aaSSimon GlassU-Boot can be built natively to run on a Linux host using the 'sandbox' 27175b3c3aaSSimon Glassboard. This allows feature development which is not board- or architecture- 27275b3c3aaSSimon Glassspecific to be undertaken on a native platform. The sandbox is also used to 27375b3c3aaSSimon Glassrun some of U-Boot's tests. 27475b3c3aaSSimon Glass 2756b1978f8SJagannadha Sutradharudu TekiSee board/sandbox/README.sandbox for more details. 27675b3c3aaSSimon Glass 27775b3c3aaSSimon Glass 278c609719bSwdenkConfiguration Options: 279c609719bSwdenk---------------------- 280c609719bSwdenk 281c609719bSwdenkConfiguration depends on the combination of board and CPU type; all 282c609719bSwdenksuch information is kept in a configuration file 283c609719bSwdenk"include/configs/<board_name>.h". 284c609719bSwdenk 285c609719bSwdenkExample: For a TQM823L module, all configuration settings are in 286c609719bSwdenk"include/configs/TQM823L.h". 287c609719bSwdenk 288c609719bSwdenk 2897f6c2cbcSwdenkMany of the options are named exactly as the corresponding Linux 2907f6c2cbcSwdenkkernel configuration options. The intention is to make it easier to 2917f6c2cbcSwdenkbuild a config tool - later. 2927f6c2cbcSwdenk 2937f6c2cbcSwdenk 294c609719bSwdenkThe following options need to be configured: 295c609719bSwdenk 2962628114eSKim Phillips- CPU Type: Define exactly one, e.g. CONFIG_MPC85XX. 297c609719bSwdenk 2982628114eSKim Phillips- Board Type: Define exactly one, e.g. CONFIG_MPC8540ADS. 2996ccec449SWolfgang Denk 3006ccec449SWolfgang Denk- CPU Daughterboard Type: (if CONFIG_ATSTK1000 is defined) 30109ea0de0SHaavard Skinnemoen Define exactly one, e.g. CONFIG_ATSTK1002 302c609719bSwdenk 303c609719bSwdenk- CPU Module Type: (if CONFIG_COGENT is defined) 304c609719bSwdenk Define exactly one of 305c609719bSwdenk CONFIG_CMA286_60_OLD 306c609719bSwdenk--- FIXME --- not tested yet: 307c609719bSwdenk CONFIG_CMA286_60, CONFIG_CMA286_21, CONFIG_CMA286_60P, 308c609719bSwdenk CONFIG_CMA287_23, CONFIG_CMA287_50 309c609719bSwdenk 310c609719bSwdenk- Motherboard Type: (if CONFIG_COGENT is defined) 311c609719bSwdenk Define exactly one of 312c609719bSwdenk CONFIG_CMA101, CONFIG_CMA102 313c609719bSwdenk 314c609719bSwdenk- Motherboard I/O Modules: (if CONFIG_COGENT is defined) 315c609719bSwdenk Define one or more of 316c609719bSwdenk CONFIG_CMA302 317c609719bSwdenk 318c609719bSwdenk- Motherboard Options: (if CONFIG_CMA101 or CONFIG_CMA102 are defined) 319c609719bSwdenk Define one or more of 320c609719bSwdenk CONFIG_LCD_HEARTBEAT - update a character position on 32111ccc33fSMarcel Ziswiler the LCD display every second with 322c609719bSwdenk a "rotator" |\-/|\-/ 323c609719bSwdenk 324cf946c6dSLei Wen- Marvell Family Member 325cf946c6dSLei Wen CONFIG_SYS_MVFS - define it if you want to enable 326cf946c6dSLei Wen multiple fs option at one time 327cf946c6dSLei Wen for marvell soc family 328cf946c6dSLei Wen 329c609719bSwdenk- MPC824X Family Member (if CONFIG_MPC824X is defined) 330c609719bSwdenk Define exactly one of 331c609719bSwdenk CONFIG_MPC8240, CONFIG_MPC8245 332c609719bSwdenk 33311ccc33fSMarcel Ziswiler- 8xx CPU Options: (if using an MPC8xx CPU) 33466ca92a5Swdenk CONFIG_8xx_GCLK_FREQ - deprecated: CPU clock if 33566ca92a5Swdenk get_gclk_freq() cannot work 3365da627a4Swdenk e.g. if there is no 32KHz 3375da627a4Swdenk reference PIT/RTC clock 33866ca92a5Swdenk CONFIG_8xx_OSCLK - PLL input clock (either EXTCLK 33966ca92a5Swdenk or XTAL/EXTAL) 340c609719bSwdenk 34166ca92a5Swdenk- 859/866/885 CPU options: (if using a MPC859 or MPC866 or MPC885 CPU): 3426d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8xx_CPUCLK_MIN 3436d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8xx_CPUCLK_MAX 34466ca92a5Swdenk CONFIG_8xx_CPUCLK_DEFAULT 34575d1ea7fSwdenk See doc/README.MPC866 34675d1ea7fSwdenk 3476d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MEASURE_CPUCLK 34875d1ea7fSwdenk 34975d1ea7fSwdenk Define this to measure the actual CPU clock instead 35075d1ea7fSwdenk of relying on the correctness of the configured 35175d1ea7fSwdenk values. Mostly useful for board bringup to make sure 35275d1ea7fSwdenk the PLL is locked at the intended frequency. Note 35375d1ea7fSwdenk that this requires a (stable) reference clock (32 kHz 3546d0f6bcfSJean-Christophe PLAGNIOL-VILLARD RTC clock or CONFIG_SYS_8XX_XIN) 35575d1ea7fSwdenk 356506f3918SHeiko Schocher CONFIG_SYS_DELAYED_ICACHE 357506f3918SHeiko Schocher 358506f3918SHeiko Schocher Define this option if you want to enable the 359506f3918SHeiko Schocher ICache only when Code runs from RAM. 360506f3918SHeiko Schocher 36166412c63SKumar Gala- 85xx CPU Options: 362ffd06e02SYork Sun CONFIG_SYS_PPC64 363ffd06e02SYork Sun 364ffd06e02SYork Sun Specifies that the core is a 64-bit PowerPC implementation (implements 365ffd06e02SYork Sun the "64" category of the Power ISA). This is necessary for ePAPR 366ffd06e02SYork Sun compliance, among other possible reasons. 367ffd06e02SYork Sun 36866412c63SKumar Gala CONFIG_SYS_FSL_TBCLK_DIV 36966412c63SKumar Gala 37066412c63SKumar Gala Defines the core time base clock divider ratio compared to the 37166412c63SKumar Gala system clock. On most PQ3 devices this is 8, on newer QorIQ 37266412c63SKumar Gala devices it can be 16 or 32. The ratio varies from SoC to Soc. 37366412c63SKumar Gala 3748f29084aSKumar Gala CONFIG_SYS_FSL_PCIE_COMPAT 3758f29084aSKumar Gala 3768f29084aSKumar Gala Defines the string to utilize when trying to match PCIe device 3778f29084aSKumar Gala tree nodes for the given platform. 3788f29084aSKumar Gala 379afa6b551SPrabhakar Kushwaha CONFIG_SYS_PPC_E500_DEBUG_TLB 380afa6b551SPrabhakar Kushwaha 381afa6b551SPrabhakar Kushwaha Enables a temporary TLB entry to be used during boot to work 382afa6b551SPrabhakar Kushwaha around limitations in e500v1 and e500v2 external debugger 383afa6b551SPrabhakar Kushwaha support. This reduces the portions of the boot code where 384afa6b551SPrabhakar Kushwaha breakpoints and single stepping do not work. The value of this 385afa6b551SPrabhakar Kushwaha symbol should be set to the TLB1 entry to be used for this 386afa6b551SPrabhakar Kushwaha purpose. 387afa6b551SPrabhakar Kushwaha 38833eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510 38933eee330SScott Wood 39033eee330SScott Wood Enables a workaround for erratum A004510. If set, 39133eee330SScott Wood then CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV and 39233eee330SScott Wood CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY must be set. 39333eee330SScott Wood 39433eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV 39533eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2 (optional) 39633eee330SScott Wood 39733eee330SScott Wood Defines one or two SoC revisions (low 8 bits of SVR) 39833eee330SScott Wood for which the A004510 workaround should be applied. 39933eee330SScott Wood 40033eee330SScott Wood The rest of SVR is either not relevant to the decision 40133eee330SScott Wood of whether the erratum is present (e.g. p2040 versus 40233eee330SScott Wood p2041) or is implied by the build target, which controls 40333eee330SScott Wood whether CONFIG_SYS_FSL_ERRATUM_A004510 is set. 40433eee330SScott Wood 40533eee330SScott Wood See Freescale App Note 4493 for more information about 40633eee330SScott Wood this erratum. 40733eee330SScott Wood 40874fa22edSPrabhakar Kushwaha CONFIG_A003399_NOR_WORKAROUND 40974fa22edSPrabhakar Kushwaha Enables a workaround for IFC erratum A003399. It is only 41074fa22edSPrabhakar Kushwaha requred during NOR boot. 41174fa22edSPrabhakar Kushwaha 41233eee330SScott Wood CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY 41333eee330SScott Wood 41433eee330SScott Wood This is the value to write into CCSR offset 0x18600 41533eee330SScott Wood according to the A004510 workaround. 41633eee330SScott Wood 41764501c66SPriyanka Jain CONFIG_SYS_FSL_DSP_DDR_ADDR 41864501c66SPriyanka Jain This value denotes start offset of DDR memory which is 41964501c66SPriyanka Jain connected exclusively to the DSP cores. 42064501c66SPriyanka Jain 421765b0bdbSPriyanka Jain CONFIG_SYS_FSL_DSP_M2_RAM_ADDR 422765b0bdbSPriyanka Jain This value denotes start offset of M2 memory 423765b0bdbSPriyanka Jain which is directly connected to the DSP core. 424765b0bdbSPriyanka Jain 42564501c66SPriyanka Jain CONFIG_SYS_FSL_DSP_M3_RAM_ADDR 42664501c66SPriyanka Jain This value denotes start offset of M3 memory which is directly 42764501c66SPriyanka Jain connected to the DSP core. 42864501c66SPriyanka Jain 429765b0bdbSPriyanka Jain CONFIG_SYS_FSL_DSP_CCSRBAR_DEFAULT 430765b0bdbSPriyanka Jain This value denotes start offset of DSP CCSR space. 431765b0bdbSPriyanka Jain 432b135991aSPriyanka Jain CONFIG_SYS_FSL_SINGLE_SOURCE_CLK 433b135991aSPriyanka Jain Single Source Clock is clocking mode present in some of FSL SoC's. 434b135991aSPriyanka Jain In this mode, a single differential clock is used to supply 435b135991aSPriyanka Jain clocks to the sysclock, ddrclock and usbclock. 436b135991aSPriyanka Jain 437fb4a2409SAneesh Bansal CONFIG_SYS_CPC_REINIT_F 438fb4a2409SAneesh Bansal This CONFIG is defined when the CPC is configured as SRAM at the 439fb4a2409SAneesh Bansal time of U-boot entry and is required to be re-initialized. 440fb4a2409SAneesh Bansal 441aade2004STang Yuantian CONFIG_DEEP_SLEEP 442aade2004STang Yuantian Inidcates this SoC supports deep sleep feature. If deep sleep is 443aade2004STang Yuantian supported, core will start to execute uboot when wakes up. 444aade2004STang Yuantian 4456cb461b4SDaniel Schwierzeck- Generic CPU options: 4462a1680e3SYork Sun CONFIG_SYS_GENERIC_GLOBAL_DATA 4472a1680e3SYork Sun Defines global data is initialized in generic board board_init_f(). 4482a1680e3SYork Sun If this macro is defined, global data is created and cleared in 4492a1680e3SYork Sun generic board board_init_f(). Without this macro, architecture/board 4502a1680e3SYork Sun should initialize global data before calling board_init_f(). 4512a1680e3SYork Sun 4526cb461b4SDaniel Schwierzeck CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN 4536cb461b4SDaniel Schwierzeck 4546cb461b4SDaniel Schwierzeck Defines the endianess of the CPU. Implementation of those 4556cb461b4SDaniel Schwierzeck values is arch specific. 4566cb461b4SDaniel Schwierzeck 4575614e71bSYork Sun CONFIG_SYS_FSL_DDR 4585614e71bSYork Sun Freescale DDR driver in use. This type of DDR controller is 4595614e71bSYork Sun found in mpc83xx, mpc85xx, mpc86xx as well as some ARM core 4605614e71bSYork Sun SoCs. 4615614e71bSYork Sun 4625614e71bSYork Sun CONFIG_SYS_FSL_DDR_ADDR 4635614e71bSYork Sun Freescale DDR memory-mapped register base. 4645614e71bSYork Sun 4655614e71bSYork Sun CONFIG_SYS_FSL_DDR_EMU 4665614e71bSYork Sun Specify emulator support for DDR. Some DDR features such as 4675614e71bSYork Sun deskew training are not available. 4685614e71bSYork Sun 4695614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN1 4705614e71bSYork Sun Freescale DDR1 controller. 4715614e71bSYork Sun 4725614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN2 4735614e71bSYork Sun Freescale DDR2 controller. 4745614e71bSYork Sun 4755614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN3 4765614e71bSYork Sun Freescale DDR3 controller. 4775614e71bSYork Sun 47834e026f9SYork Sun CONFIG_SYS_FSL_DDRC_GEN4 47934e026f9SYork Sun Freescale DDR4 controller. 48034e026f9SYork Sun 4819ac4ffbdSYork Sun CONFIG_SYS_FSL_DDRC_ARM_GEN3 4829ac4ffbdSYork Sun Freescale DDR3 controller for ARM-based SoCs. 4839ac4ffbdSYork Sun 4845614e71bSYork Sun CONFIG_SYS_FSL_DDR1 4855614e71bSYork Sun Board config to use DDR1. It can be enabled for SoCs with 4865614e71bSYork Sun Freescale DDR1 or DDR2 controllers, depending on the board 4875614e71bSYork Sun implemetation. 4885614e71bSYork Sun 4895614e71bSYork Sun CONFIG_SYS_FSL_DDR2 4905614e71bSYork Sun Board config to use DDR2. It can be eanbeld for SoCs with 4915614e71bSYork Sun Freescale DDR2 or DDR3 controllers, depending on the board 4925614e71bSYork Sun implementation. 4935614e71bSYork Sun 4945614e71bSYork Sun CONFIG_SYS_FSL_DDR3 4955614e71bSYork Sun Board config to use DDR3. It can be enabled for SoCs with 49634e026f9SYork Sun Freescale DDR3 or DDR3L controllers. 49734e026f9SYork Sun 49834e026f9SYork Sun CONFIG_SYS_FSL_DDR3L 49934e026f9SYork Sun Board config to use DDR3L. It can be enabled for SoCs with 50034e026f9SYork Sun DDR3L controllers. 50134e026f9SYork Sun 50234e026f9SYork Sun CONFIG_SYS_FSL_DDR4 50334e026f9SYork Sun Board config to use DDR4. It can be enabled for SoCs with 50434e026f9SYork Sun DDR4 controllers. 5055614e71bSYork Sun 5061b4175d6SPrabhakar Kushwaha CONFIG_SYS_FSL_IFC_BE 5071b4175d6SPrabhakar Kushwaha Defines the IFC controller register space as Big Endian 5081b4175d6SPrabhakar Kushwaha 5091b4175d6SPrabhakar Kushwaha CONFIG_SYS_FSL_IFC_LE 5101b4175d6SPrabhakar Kushwaha Defines the IFC controller register space as Little Endian 5111b4175d6SPrabhakar Kushwaha 512690e4258SPrabhakar Kushwaha CONFIG_SYS_FSL_PBL_PBI 513690e4258SPrabhakar Kushwaha It enables addition of RCW (Power on reset configuration) in built image. 514690e4258SPrabhakar Kushwaha Please refer doc/README.pblimage for more details 515690e4258SPrabhakar Kushwaha 516690e4258SPrabhakar Kushwaha CONFIG_SYS_FSL_PBL_RCW 517690e4258SPrabhakar Kushwaha It adds PBI(pre-boot instructions) commands in u-boot build image. 518690e4258SPrabhakar Kushwaha PBI commands can be used to configure SoC before it starts the execution. 519690e4258SPrabhakar Kushwaha Please refer doc/README.pblimage for more details 520690e4258SPrabhakar Kushwaha 52189ad7be8SPrabhakar Kushwaha CONFIG_SPL_FSL_PBL 52289ad7be8SPrabhakar Kushwaha It adds a target to create boot binary having SPL binary in PBI format 52389ad7be8SPrabhakar Kushwaha concatenated with u-boot binary. 52489ad7be8SPrabhakar Kushwaha 5254e5b1bd0SYork Sun CONFIG_SYS_FSL_DDR_BE 5264e5b1bd0SYork Sun Defines the DDR controller register space as Big Endian 5274e5b1bd0SYork Sun 5284e5b1bd0SYork Sun CONFIG_SYS_FSL_DDR_LE 5294e5b1bd0SYork Sun Defines the DDR controller register space as Little Endian 5304e5b1bd0SYork Sun 5316b9e309aSYork Sun CONFIG_SYS_FSL_DDR_SDRAM_BASE_PHY 5326b9e309aSYork Sun Physical address from the view of DDR controllers. It is the 5336b9e309aSYork Sun same as CONFIG_SYS_DDR_SDRAM_BASE for all Power SoCs. But 5346b9e309aSYork Sun it could be different for ARM SoCs. 5356b9e309aSYork Sun 5366b1e1254SYork Sun CONFIG_SYS_FSL_DDR_INTLV_256B 5376b1e1254SYork Sun DDR controller interleaving on 256-byte. This is a special 5386b1e1254SYork Sun interleaving mode, handled by Dickens for Freescale layerscape 5396b1e1254SYork Sun SoCs with ARM core. 5406b1e1254SYork Sun 5411d71efbbSYork Sun CONFIG_SYS_FSL_DDR_MAIN_NUM_CTRLS 5421d71efbbSYork Sun Number of controllers used as main memory. 5431d71efbbSYork Sun 5441d71efbbSYork Sun CONFIG_SYS_FSL_OTHER_DDR_NUM_CTRLS 5451d71efbbSYork Sun Number of controllers used for other than main memory. 5461d71efbbSYork Sun 547028dbb8dSRuchika Gupta CONFIG_SYS_FSL_SEC_BE 548028dbb8dSRuchika Gupta Defines the SEC controller register space as Big Endian 549028dbb8dSRuchika Gupta 550028dbb8dSRuchika Gupta CONFIG_SYS_FSL_SEC_LE 551028dbb8dSRuchika Gupta Defines the SEC controller register space as Little Endian 552028dbb8dSRuchika Gupta 5530b953ffcSMarkus Klotzbuecher- Intel Monahans options: 5546d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MONAHANS_RUN_MODE_OSC_RATIO 5550b953ffcSMarkus Klotzbuecher 5560b953ffcSMarkus Klotzbuecher Defines the Monahans run mode to oscillator 5570b953ffcSMarkus Klotzbuecher ratio. Valid values are 8, 16, 24, 31. The core 5580b953ffcSMarkus Klotzbuecher frequency is this value multiplied by 13 MHz. 5590b953ffcSMarkus Klotzbuecher 5606d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MONAHANS_TURBO_RUN_MODE_RATIO 5610b953ffcSMarkus Klotzbuecher 5620b953ffcSMarkus Klotzbuecher Defines the Monahans turbo mode to oscillator 5630b953ffcSMarkus Klotzbuecher ratio. Valid values are 1 (default if undefined) and 5640b953ffcSMarkus Klotzbuecher 2. The core frequency as calculated above is multiplied 5650b953ffcSMarkus Klotzbuecher by this value. 5660b953ffcSMarkus Klotzbuecher 56792bbd64eSDaniel Schwierzeck- MIPS CPU options: 56892bbd64eSDaniel Schwierzeck CONFIG_SYS_INIT_SP_OFFSET 56992bbd64eSDaniel Schwierzeck 57092bbd64eSDaniel Schwierzeck Offset relative to CONFIG_SYS_SDRAM_BASE for initial stack 57192bbd64eSDaniel Schwierzeck pointer. This is needed for the temporary stack before 57292bbd64eSDaniel Schwierzeck relocation. 57392bbd64eSDaniel Schwierzeck 57492bbd64eSDaniel Schwierzeck CONFIG_SYS_MIPS_CACHE_MODE 57592bbd64eSDaniel Schwierzeck 57692bbd64eSDaniel Schwierzeck Cache operation mode for the MIPS CPU. 57792bbd64eSDaniel Schwierzeck See also arch/mips/include/asm/mipsregs.h. 57892bbd64eSDaniel Schwierzeck Possible values are: 57992bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_NO_WA 58092bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_WA 58192bbd64eSDaniel Schwierzeck CONF_CM_UNCACHED 58292bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_NONCOHERENT 58392bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_CE 58492bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_COW 58592bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_CUW 58692bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_ACCELERATED 58792bbd64eSDaniel Schwierzeck 58892bbd64eSDaniel Schwierzeck CONFIG_SYS_XWAY_EBU_BOOTCFG 58992bbd64eSDaniel Schwierzeck 59092bbd64eSDaniel Schwierzeck Special option for Lantiq XWAY SoCs for booting from NOR flash. 59192bbd64eSDaniel Schwierzeck See also arch/mips/cpu/mips32/start.S. 59292bbd64eSDaniel Schwierzeck 59392bbd64eSDaniel Schwierzeck CONFIG_XWAY_SWAP_BYTES 59492bbd64eSDaniel Schwierzeck 59592bbd64eSDaniel Schwierzeck Enable compilation of tools/xway-swap-bytes needed for Lantiq 59692bbd64eSDaniel Schwierzeck XWAY SoCs for booting from NOR flash. The U-Boot image needs to 59792bbd64eSDaniel Schwierzeck be swapped if a flash programmer is used. 59892bbd64eSDaniel Schwierzeck 599b67d8816SChristian Riesch- ARM options: 600b67d8816SChristian Riesch CONFIG_SYS_EXCEPTION_VECTORS_HIGH 601b67d8816SChristian Riesch 602b67d8816SChristian Riesch Select high exception vectors of the ARM core, e.g., do not 603b67d8816SChristian Riesch clear the V bit of the c1 register of CP15. 604b67d8816SChristian Riesch 6055356f545SAneesh V CONFIG_SYS_THUMB_BUILD 6065356f545SAneesh V 6075356f545SAneesh V Use this flag to build U-Boot using the Thumb instruction 6085356f545SAneesh V set for ARM architectures. Thumb instruction set provides 6095356f545SAneesh V better code density. For ARM architectures that support 6105356f545SAneesh V Thumb2 this flag will result in Thumb2 code generated by 6115356f545SAneesh V GCC. 6125356f545SAneesh V 613c5d4752cSStephen Warren CONFIG_ARM_ERRATA_716044 6140678587fSStephen Warren CONFIG_ARM_ERRATA_742230 6150678587fSStephen Warren CONFIG_ARM_ERRATA_743622 6160678587fSStephen Warren CONFIG_ARM_ERRATA_751472 617f71cbfe3SNitin Garg CONFIG_ARM_ERRATA_794072 618b7588e3bSNitin Garg CONFIG_ARM_ERRATA_761320 6190678587fSStephen Warren 6200678587fSStephen Warren If set, the workarounds for these ARM errata are applied early 6210678587fSStephen Warren during U-Boot startup. Note that these options force the 6220678587fSStephen Warren workarounds to be applied; no CPU-type/version detection 6230678587fSStephen Warren exists, unlike the similar options in the Linux kernel. Do not 6240678587fSStephen Warren set these options unless they apply! 6250678587fSStephen Warren 626*38687ae6SSimon Glass- Driver Model 627*38687ae6SSimon Glass Driver model is a new framework for devices in U-Boot 628*38687ae6SSimon Glass introduced in early 2014. U-Boot is being progressively 629*38687ae6SSimon Glass moved over to this. It offers a consistent device structure, 630*38687ae6SSimon Glass supports grouping devices into classes and has built-in 631*38687ae6SSimon Glass handling of platform data and device tree. 632*38687ae6SSimon Glass 633*38687ae6SSimon Glass To enable transition to driver model in a relatively 634*38687ae6SSimon Glass painful fashion, each subsystem can be independently 635*38687ae6SSimon Glass switched between the legacy/ad-hoc approach and the new 636*38687ae6SSimon Glass driver model using the options below. Also, many uclass 637*38687ae6SSimon Glass interfaces include compatibility features which may be 638*38687ae6SSimon Glass removed once the conversion of that subsystem is complete. 639*38687ae6SSimon Glass As a result, the API provided by the subsystem may in fact 640*38687ae6SSimon Glass not change with driver model. 641*38687ae6SSimon Glass 642*38687ae6SSimon Glass See doc/driver-model/README.txt for more information. 643*38687ae6SSimon Glass 644*38687ae6SSimon Glass CONFIG_DM 645*38687ae6SSimon Glass 646*38687ae6SSimon Glass Enable driver model. This brings in the core support, 647*38687ae6SSimon Glass including scanning of platform data on start-up. If 648*38687ae6SSimon Glass CONFIG_OF_CONTROL is enabled, the device tree will be 649*38687ae6SSimon Glass scanned also when available. 650*38687ae6SSimon Glass 651*38687ae6SSimon Glass CONFIG_CMD_DM 652*38687ae6SSimon Glass 653*38687ae6SSimon Glass Enable driver model test commands. These allow you to print 654*38687ae6SSimon Glass out the driver model tree and the uclasses. 655*38687ae6SSimon Glass 656*38687ae6SSimon Glass CONFIG_DM_DEMO 657*38687ae6SSimon Glass 658*38687ae6SSimon Glass Enable some demo devices and the 'demo' command. These are 659*38687ae6SSimon Glass really only useful for playing around while trying to 660*38687ae6SSimon Glass understand driver model in sandbox. 661*38687ae6SSimon Glass 662*38687ae6SSimon Glass CONFIG_SPL_DM 663*38687ae6SSimon Glass 664*38687ae6SSimon Glass Enable driver model in SPL. You will need to provide a 665*38687ae6SSimon Glass suitable malloc() implementation. If you are not using the 666*38687ae6SSimon Glass full malloc() enabled by CONFIG_SYS_SPL_MALLOC_START, 667*38687ae6SSimon Glass consider using CONFIG_SYS_MALLOC_SIMPLE. In that case you 668*38687ae6SSimon Glass must provide CONFIG_SYS_MALLOC_F_LEN to set the size. 669*38687ae6SSimon Glass In most cases driver model will only allocate a few uclasses 670*38687ae6SSimon Glass and devices in SPL, so 1KB should be enable. See 671*38687ae6SSimon Glass CONFIG_SYS_MALLOC_F_LEN for more details on how to enable 672*38687ae6SSimon Glass it. 673*38687ae6SSimon Glass 674*38687ae6SSimon Glass CONFIG_DM_SERIAL 675*38687ae6SSimon Glass 676*38687ae6SSimon Glass Enable driver model for serial. This replaces 677*38687ae6SSimon Glass drivers/serial/serial.c with the serial uclass, which 678*38687ae6SSimon Glass implements serial_putc() etc. The uclass interface is 679*38687ae6SSimon Glass defined in include/serial.h. 680*38687ae6SSimon Glass 681*38687ae6SSimon Glass CONFIG_DM_GPIO 682*38687ae6SSimon Glass 683*38687ae6SSimon Glass Enable driver model for GPIO access. The standard GPIO 684*38687ae6SSimon Glass interface (gpio_get_value(), etc.) is then implemented by 685*38687ae6SSimon Glass the GPIO uclass. Drivers provide methods to query the 686*38687ae6SSimon Glass particular GPIOs that they provide. The uclass interface 687*38687ae6SSimon Glass is defined in include/asm-generic/gpio.h. 688*38687ae6SSimon Glass 689*38687ae6SSimon Glass CONFIG_DM_SPI 690*38687ae6SSimon Glass 691*38687ae6SSimon Glass Enable driver model for SPI. The SPI slave interface 692*38687ae6SSimon Glass (spi_setup_slave(), spi_xfer(), etc.) is then implemented by 693*38687ae6SSimon Glass the SPI uclass. Drivers provide methods to access the SPI 694*38687ae6SSimon Glass buses that they control. The uclass interface is defined in 695*38687ae6SSimon Glass include/spi.h. The existing spi_slave structure is attached 696*38687ae6SSimon Glass as 'parent data' to every slave on each bus. Slaves 697*38687ae6SSimon Glass typically use driver-private data instead of extending the 698*38687ae6SSimon Glass spi_slave structure. 699*38687ae6SSimon Glass 700*38687ae6SSimon Glass CONFIG_DM_SPI_FLASH 701*38687ae6SSimon Glass 702*38687ae6SSimon Glass Enable driver model for SPI flash. This SPI flash interface 703*38687ae6SSimon Glass (spi_flash_probe(), spi_flash_write(), etc.) is then 704*38687ae6SSimon Glass implemented by the SPI flash uclass. There is one standard 705*38687ae6SSimon Glass SPI flash driver which knows how to probe most chips 706*38687ae6SSimon Glass supported by U-Boot. The uclass interface is defined in 707*38687ae6SSimon Glass include/spi_flash.h, but is currently fully compatible 708*38687ae6SSimon Glass with the old interface to avoid confusion and duplication 709*38687ae6SSimon Glass during the transition parent. SPI and SPI flash must be 710*38687ae6SSimon Glass enabled together (it is not possible to use driver model 711*38687ae6SSimon Glass for one and not the other). 712*38687ae6SSimon Glass 713*38687ae6SSimon Glass CONFIG_DM_CROS_EC 714*38687ae6SSimon Glass 715*38687ae6SSimon Glass Enable driver model for the Chrome OS EC interface. This 716*38687ae6SSimon Glass allows the cros_ec SPI driver to operate with CONFIG_DM_SPI 717*38687ae6SSimon Glass but otherwise makes few changes. Since cros_ec also supports 718*38687ae6SSimon Glass I2C and LPC (which don't support driver model yet), a full 719*38687ae6SSimon Glass conversion is not yet possible. 720*38687ae6SSimon Glass 721*38687ae6SSimon Glass 722*38687ae6SSimon Glass ** Code size options: The following options are enabled by 723*38687ae6SSimon Glass default except in SPL. Enable them explicitly to get these 724*38687ae6SSimon Glass features in SPL. 725*38687ae6SSimon Glass 726*38687ae6SSimon Glass CONFIG_DM_WARN 727*38687ae6SSimon Glass 728*38687ae6SSimon Glass Enable the dm_warn() function. This can use up quite a bit 729*38687ae6SSimon Glass of space for its strings. 730*38687ae6SSimon Glass 731*38687ae6SSimon Glass CONFIG_DM_STDIO 732*38687ae6SSimon Glass 733*38687ae6SSimon Glass Enable registering a serial device with the stdio library. 734*38687ae6SSimon Glass 735*38687ae6SSimon Glass CONFIG_DM_DEVICE_REMOVE 736*38687ae6SSimon Glass 737*38687ae6SSimon Glass Enable removing of devices. 738*38687ae6SSimon Glass 739*38687ae6SSimon Glass 7405da627a4Swdenk- Linux Kernel Interface: 741c609719bSwdenk CONFIG_CLOCKS_IN_MHZ 742c609719bSwdenk 743c609719bSwdenk U-Boot stores all clock information in Hz 744c609719bSwdenk internally. For binary compatibility with older Linux 745c609719bSwdenk kernels (which expect the clocks passed in the 746c609719bSwdenk bd_info data to be in MHz) the environment variable 747c609719bSwdenk "clocks_in_mhz" can be defined so that U-Boot 748c609719bSwdenk converts clock data to MHZ before passing it to the 749c609719bSwdenk Linux kernel. 750c609719bSwdenk When CONFIG_CLOCKS_IN_MHZ is defined, a definition of 751c609719bSwdenk "clocks_in_mhz=1" is automatically included in the 752c609719bSwdenk default environment. 753c609719bSwdenk 7545da627a4Swdenk CONFIG_MEMSIZE_IN_BYTES [relevant for MIPS only] 7555da627a4Swdenk 75611ccc33fSMarcel Ziswiler When transferring memsize parameter to linux, some versions 7575da627a4Swdenk expect it to be in bytes, others in MB. 7585da627a4Swdenk Define CONFIG_MEMSIZE_IN_BYTES to make it in bytes. 7595da627a4Swdenk 760fec6d9eeSGerald Van Baren CONFIG_OF_LIBFDT 761f57f70aaSWolfgang Denk 762f57f70aaSWolfgang Denk New kernel versions are expecting firmware settings to be 763213bf8c8SGerald Van Baren passed using flattened device trees (based on open firmware 764213bf8c8SGerald Van Baren concepts). 765213bf8c8SGerald Van Baren 766213bf8c8SGerald Van Baren CONFIG_OF_LIBFDT 767213bf8c8SGerald Van Baren * New libfdt-based support 768213bf8c8SGerald Van Baren * Adds the "fdt" command 7693bb342fcSKim Phillips * The bootm command automatically updates the fdt 770213bf8c8SGerald Van Baren 771b55ae402SMarcel Ziswiler OF_CPU - The proper name of the cpus node (only required for 772b55ae402SMarcel Ziswiler MPC512X and MPC5xxx based boards). 773b55ae402SMarcel Ziswiler OF_SOC - The proper name of the soc node (only required for 774b55ae402SMarcel Ziswiler MPC512X and MPC5xxx based boards). 775f57f70aaSWolfgang Denk OF_TBCLK - The timebase frequency. 776c2871f03SKumar Gala OF_STDOUT_PATH - The path to the console device 777f57f70aaSWolfgang Denk 77811ccc33fSMarcel Ziswiler boards with QUICC Engines require OF_QE to set UCC MAC 77911ccc33fSMarcel Ziswiler addresses 7803bb342fcSKim Phillips 7814e253137SKumar Gala CONFIG_OF_BOARD_SETUP 7824e253137SKumar Gala 7834e253137SKumar Gala Board code has addition modification that it wants to make 7844e253137SKumar Gala to the flat device tree before handing it off to the kernel 7856705d81eSwdenk 7860267768eSMatthew McClintock CONFIG_OF_BOOT_CPU 7870267768eSMatthew McClintock 78811ccc33fSMarcel Ziswiler This define fills in the correct boot CPU in the boot 7890267768eSMatthew McClintock param header, the default value is zero if undefined. 7900267768eSMatthew McClintock 7913887c3fbSHeiko Schocher CONFIG_OF_IDE_FIXUP 7923887c3fbSHeiko Schocher 7933887c3fbSHeiko Schocher U-Boot can detect if an IDE device is present or not. 7943887c3fbSHeiko Schocher If not, and this new config option is activated, U-Boot 7953887c3fbSHeiko Schocher removes the ATA node from the DTS before booting Linux, 7963887c3fbSHeiko Schocher so the Linux IDE driver does not probe the device and 7973887c3fbSHeiko Schocher crash. This is needed for buggy hardware (uc101) where 7983887c3fbSHeiko Schocher no pull down resistor is connected to the signal IDE5V_DD7. 7993887c3fbSHeiko Schocher 8007eb29398SIgor Grinberg CONFIG_MACH_TYPE [relevant for ARM only][mandatory] 8017eb29398SIgor Grinberg 8027eb29398SIgor Grinberg This setting is mandatory for all boards that have only one 8037eb29398SIgor Grinberg machine type and must be used to specify the machine type 8047eb29398SIgor Grinberg number as it appears in the ARM machine registry 8057eb29398SIgor Grinberg (see http://www.arm.linux.org.uk/developer/machines/). 8067eb29398SIgor Grinberg Only boards that have multiple machine types supported 8077eb29398SIgor Grinberg in a single configuration file and the machine type is 8087eb29398SIgor Grinberg runtime discoverable, do not have to use this setting. 8097eb29398SIgor Grinberg 8100b2f4ecaSNiklaus Giger- vxWorks boot parameters: 8110b2f4ecaSNiklaus Giger 8120b2f4ecaSNiklaus Giger bootvx constructs a valid bootline using the following 8130b2f4ecaSNiklaus Giger environments variables: bootfile, ipaddr, serverip, hostname. 8140b2f4ecaSNiklaus Giger It loads the vxWorks image pointed bootfile. 8150b2f4ecaSNiklaus Giger 8160b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_BOOT_DEVICE - The vxworks device name 8170b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_MAC_PTR - Ethernet 6 byte MA -address 8180b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_SERVERNAME - Name of the server 8190b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_BOOT_ADDR - Address of boot parameters 8200b2f4ecaSNiklaus Giger 8210b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_ADD_PARAMS 8220b2f4ecaSNiklaus Giger 8230b2f4ecaSNiklaus Giger Add it at the end of the bootline. E.g "u=username pw=secret" 8240b2f4ecaSNiklaus Giger 8250b2f4ecaSNiklaus Giger Note: If a "bootargs" environment is defined, it will overwride 8260b2f4ecaSNiklaus Giger the defaults discussed just above. 8270b2f4ecaSNiklaus Giger 8282c451f78SAneesh V- Cache Configuration: 8292c451f78SAneesh V CONFIG_SYS_ICACHE_OFF - Do not enable instruction cache in U-Boot 8302c451f78SAneesh V CONFIG_SYS_DCACHE_OFF - Do not enable data cache in U-Boot 8312c451f78SAneesh V CONFIG_SYS_L2CACHE_OFF- Do not enable L2 cache in U-Boot 8322c451f78SAneesh V 83393bc2193SAneesh V- Cache Configuration for ARM: 83493bc2193SAneesh V CONFIG_SYS_L2_PL310 - Enable support for ARM PL310 L2 cache 83593bc2193SAneesh V controller 83693bc2193SAneesh V CONFIG_SYS_PL310_BASE - Physical base address of PL310 83793bc2193SAneesh V controller register space 83893bc2193SAneesh V 8396705d81eSwdenk- Serial Ports: 84048d0192fSAndreas Engel CONFIG_PL010_SERIAL 8416705d81eSwdenk 8426705d81eSwdenk Define this if you want support for Amba PrimeCell PL010 UARTs. 8436705d81eSwdenk 84448d0192fSAndreas Engel CONFIG_PL011_SERIAL 8456705d81eSwdenk 8466705d81eSwdenk Define this if you want support for Amba PrimeCell PL011 UARTs. 8476705d81eSwdenk 8486705d81eSwdenk CONFIG_PL011_CLOCK 8496705d81eSwdenk 8506705d81eSwdenk If you have Amba PrimeCell PL011 UARTs, set this variable to 8516705d81eSwdenk the clock speed of the UARTs. 8526705d81eSwdenk 8536705d81eSwdenk CONFIG_PL01x_PORTS 8546705d81eSwdenk 8556705d81eSwdenk If you have Amba PrimeCell PL010 or PL011 UARTs on your board, 8566705d81eSwdenk define this to a list of base addresses for each (supported) 8576705d81eSwdenk port. See e.g. include/configs/versatile.h 8586705d81eSwdenk 859910f1ae3SJohn Rigby CONFIG_PL011_SERIAL_RLCR 860910f1ae3SJohn Rigby 861910f1ae3SJohn Rigby Some vendor versions of PL011 serial ports (e.g. ST-Ericsson U8500) 862910f1ae3SJohn Rigby have separate receive and transmit line control registers. Set 863910f1ae3SJohn Rigby this variable to initialize the extra register. 864910f1ae3SJohn Rigby 865910f1ae3SJohn Rigby CONFIG_PL011_SERIAL_FLUSH_ON_INIT 866910f1ae3SJohn Rigby 867910f1ae3SJohn Rigby On some platforms (e.g. U8500) U-Boot is loaded by a second stage 868910f1ae3SJohn Rigby boot loader that has already initialized the UART. Define this 869910f1ae3SJohn Rigby variable to flush the UART at init time. 870910f1ae3SJohn Rigby 871d57dee57SKaricheri, Muralidharan CONFIG_SERIAL_HW_FLOW_CONTROL 872d57dee57SKaricheri, Muralidharan 873d57dee57SKaricheri, Muralidharan Define this variable to enable hw flow control in serial driver. 874d57dee57SKaricheri, Muralidharan Current user of this option is drivers/serial/nsl16550.c driver 8756705d81eSwdenk 876c609719bSwdenk- Console Interface: 877c609719bSwdenk Depending on board, define exactly one serial port 878c609719bSwdenk (like CONFIG_8xx_CONS_SMC1, CONFIG_8xx_CONS_SMC2, 879c609719bSwdenk CONFIG_8xx_CONS_SCC1, ...), or switch off the serial 880c609719bSwdenk console by defining CONFIG_8xx_CONS_NONE 881c609719bSwdenk 882c609719bSwdenk Note: if CONFIG_8xx_CONS_NONE is defined, the serial 883c609719bSwdenk port routines must be defined elsewhere 884c609719bSwdenk (i.e. serial_init(), serial_getc(), ...) 885c609719bSwdenk 886c609719bSwdenk CONFIG_CFB_CONSOLE 887c609719bSwdenk Enables console device for a color framebuffer. Needs following 888c53043b7SWolfgang Denk defines (cf. smiLynxEM, i8042) 889c609719bSwdenk VIDEO_FB_LITTLE_ENDIAN graphic memory organisation 890c609719bSwdenk (default big endian) 891c609719bSwdenk VIDEO_HW_RECTFILL graphic chip supports 892c609719bSwdenk rectangle fill 893c609719bSwdenk (cf. smiLynxEM) 894c609719bSwdenk VIDEO_HW_BITBLT graphic chip supports 895c609719bSwdenk bit-blit (cf. smiLynxEM) 896c609719bSwdenk VIDEO_VISIBLE_COLS visible pixel columns 897c609719bSwdenk (cols=pitch) 898c609719bSwdenk VIDEO_VISIBLE_ROWS visible pixel rows 899c609719bSwdenk VIDEO_PIXEL_SIZE bytes per pixel 900c609719bSwdenk VIDEO_DATA_FORMAT graphic data format 901c609719bSwdenk (0-5, cf. cfb_console.c) 902c609719bSwdenk VIDEO_FB_ADRS framebuffer address 903c609719bSwdenk VIDEO_KBD_INIT_FCT keyboard int fct 904c609719bSwdenk (i.e. i8042_kbd_init()) 905c609719bSwdenk VIDEO_TSTC_FCT test char fct 906c609719bSwdenk (i.e. i8042_tstc) 907c609719bSwdenk VIDEO_GETC_FCT get char fct 908c609719bSwdenk (i.e. i8042_getc) 909c609719bSwdenk CONFIG_CONSOLE_CURSOR cursor drawing on/off 910c609719bSwdenk (requires blink timer 911c609719bSwdenk cf. i8042.c) 9126d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CONSOLE_BLINK_COUNT blink interval (cf. i8042.c) 913c609719bSwdenk CONFIG_CONSOLE_TIME display time/date info in 914c609719bSwdenk upper right corner 915602ad3b3SJon Loeliger (requires CONFIG_CMD_DATE) 916c609719bSwdenk CONFIG_VIDEO_LOGO display Linux logo in 917c609719bSwdenk upper left corner 918a6c7ad2fSwdenk CONFIG_VIDEO_BMP_LOGO use bmp_logo.h instead of 919a6c7ad2fSwdenk linux_logo.h for logo. 920a6c7ad2fSwdenk Requires CONFIG_VIDEO_LOGO 921c609719bSwdenk CONFIG_CONSOLE_EXTRA_INFO 92211ccc33fSMarcel Ziswiler additional board info beside 923c609719bSwdenk the logo 924c609719bSwdenk 92533a35bbbSPali Rohár When CONFIG_CFB_CONSOLE_ANSI is defined, console will support 92633a35bbbSPali Rohár a limited number of ANSI escape sequences (cursor control, 92733a35bbbSPali Rohár erase functions and limited graphics rendition control). 92833a35bbbSPali Rohár 929c609719bSwdenk When CONFIG_CFB_CONSOLE is defined, video console is 930c609719bSwdenk default i/o. Serial console can be forced with 931c609719bSwdenk environment 'console=serial'. 932c609719bSwdenk 933a3ad8e26Swdenk When CONFIG_SILENT_CONSOLE is defined, all console 934a3ad8e26Swdenk messages (by U-Boot and Linux!) can be silenced with 935a3ad8e26Swdenk the "silent" environment variable. See 936a3ad8e26Swdenk doc/README.silent for more information. 937a3ad8e26Swdenk 93845ae2546SHeiko Schocher CONFIG_SYS_CONSOLE_BG_COL: define the backgroundcolor, default 93945ae2546SHeiko Schocher is 0x00. 94045ae2546SHeiko Schocher CONFIG_SYS_CONSOLE_FG_COL: define the foregroundcolor, default 94145ae2546SHeiko Schocher is 0xa0. 94245ae2546SHeiko Schocher 943c609719bSwdenk- Console Baudrate: 944c609719bSwdenk CONFIG_BAUDRATE - in bps 945c609719bSwdenk Select one of the baudrates listed in 9466d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BAUDRATE_TABLE, see below. 9476d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BRGCLK_PRESCALE, baudrate prescale 948c609719bSwdenk 949c92fac91SHeiko Schocher- Console Rx buffer length 950c92fac91SHeiko Schocher With CONFIG_SYS_SMC_RXBUFLEN it is possible to define 951c92fac91SHeiko Schocher the maximum receive buffer length for the SMC. 9522b3f12c2SHeiko Schocher This option is actual only for 82xx and 8xx possible. 953c92fac91SHeiko Schocher If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE 954c92fac91SHeiko Schocher must be defined, to setup the maximum idle timeout for 955c92fac91SHeiko Schocher the SMC. 956c92fac91SHeiko Schocher 9579558b48aSGraeme Russ- Pre-Console Buffer: 9589558b48aSGraeme Russ Prior to the console being initialised (i.e. serial UART 9599558b48aSGraeme Russ initialised etc) all console output is silently discarded. 9609558b48aSGraeme Russ Defining CONFIG_PRE_CONSOLE_BUFFER will cause U-Boot to 9619558b48aSGraeme Russ buffer any console messages prior to the console being 9629558b48aSGraeme Russ initialised to a buffer of size CONFIG_PRE_CON_BUF_SZ 9639558b48aSGraeme Russ bytes located at CONFIG_PRE_CON_BUF_ADDR. The buffer is 9649558b48aSGraeme Russ a circular buffer, so if more than CONFIG_PRE_CON_BUF_SZ 9659558b48aSGraeme Russ bytes are output before the console is initialised, the 9669558b48aSGraeme Russ earlier bytes are discarded. 9679558b48aSGraeme Russ 9689558b48aSGraeme Russ 'Sane' compilers will generate smaller code if 9699558b48aSGraeme Russ CONFIG_PRE_CON_BUF_SZ is a power of 2 9709558b48aSGraeme Russ 971046a37bdSSonny Rao- Safe printf() functions 972046a37bdSSonny Rao Define CONFIG_SYS_VSNPRINTF to compile in safe versions of 973046a37bdSSonny Rao the printf() functions. These are defined in 974046a37bdSSonny Rao include/vsprintf.h and include snprintf(), vsnprintf() and 975046a37bdSSonny Rao so on. Code size increase is approximately 300-500 bytes. 976046a37bdSSonny Rao If this option is not given then these functions will 977046a37bdSSonny Rao silently discard their buffer size argument - this means 978046a37bdSSonny Rao you are not getting any overflow checking in this case. 979046a37bdSSonny Rao 980c609719bSwdenk- Boot Delay: CONFIG_BOOTDELAY - in seconds 981c609719bSwdenk Delay before automatically booting the default image; 982c609719bSwdenk set to -1 to disable autoboot. 98393d7212fSJoe Hershberger set to -2 to autoboot with no delay and not check for abort 98493d7212fSJoe Hershberger (even when CONFIG_ZERO_BOOTDELAY_CHECK is defined). 985c609719bSwdenk 986c609719bSwdenk See doc/README.autoboot for these options that 987c609719bSwdenk work with CONFIG_BOOTDELAY. None are required. 988c609719bSwdenk CONFIG_BOOT_RETRY_TIME 989c609719bSwdenk CONFIG_BOOT_RETRY_MIN 990c609719bSwdenk CONFIG_AUTOBOOT_KEYED 991c609719bSwdenk CONFIG_AUTOBOOT_PROMPT 992c609719bSwdenk CONFIG_AUTOBOOT_DELAY_STR 993c609719bSwdenk CONFIG_AUTOBOOT_STOP_STR 994c609719bSwdenk CONFIG_AUTOBOOT_DELAY_STR2 995c609719bSwdenk CONFIG_AUTOBOOT_STOP_STR2 996c609719bSwdenk CONFIG_ZERO_BOOTDELAY_CHECK 997c609719bSwdenk CONFIG_RESET_TO_RETRY 998c609719bSwdenk 999c609719bSwdenk- Autoboot Command: 1000c609719bSwdenk CONFIG_BOOTCOMMAND 1001c609719bSwdenk Only needed when CONFIG_BOOTDELAY is enabled; 1002c609719bSwdenk define a command string that is automatically executed 1003c609719bSwdenk when no character is read on the console interface 1004c609719bSwdenk within "Boot Delay" after reset. 1005c609719bSwdenk 1006c609719bSwdenk CONFIG_BOOTARGS 1007c609719bSwdenk This can be used to pass arguments to the bootm 1008c609719bSwdenk command. The value of CONFIG_BOOTARGS goes into the 1009c609719bSwdenk environment value "bootargs". 1010c609719bSwdenk 1011c609719bSwdenk CONFIG_RAMBOOT and CONFIG_NFSBOOT 1012c609719bSwdenk The value of these goes into the environment as 1013c609719bSwdenk "ramboot" and "nfsboot" respectively, and can be used 1014c609719bSwdenk as a convenience, when switching between booting from 101511ccc33fSMarcel Ziswiler RAM and NFS. 1016c609719bSwdenk 1017eda0ba38SHeiko Schocher- Bootcount: 1018eda0ba38SHeiko Schocher CONFIG_BOOTCOUNT_LIMIT 1019eda0ba38SHeiko Schocher Implements a mechanism for detecting a repeating reboot 1020eda0ba38SHeiko Schocher cycle, see: 1021eda0ba38SHeiko Schocher http://www.denx.de/wiki/view/DULG/UBootBootCountLimit 1022eda0ba38SHeiko Schocher 1023eda0ba38SHeiko Schocher CONFIG_BOOTCOUNT_ENV 1024eda0ba38SHeiko Schocher If no softreset save registers are found on the hardware 1025eda0ba38SHeiko Schocher "bootcount" is stored in the environment. To prevent a 1026eda0ba38SHeiko Schocher saveenv on all reboots, the environment variable 1027eda0ba38SHeiko Schocher "upgrade_available" is used. If "upgrade_available" is 1028eda0ba38SHeiko Schocher 0, "bootcount" is always 0, if "upgrade_available" is 1029eda0ba38SHeiko Schocher 1 "bootcount" is incremented in the environment. 1030eda0ba38SHeiko Schocher So the Userspace Applikation must set the "upgrade_available" 1031eda0ba38SHeiko Schocher and "bootcount" variable to 0, if a boot was successfully. 1032eda0ba38SHeiko Schocher 1033c609719bSwdenk- Pre-Boot Commands: 1034c609719bSwdenk CONFIG_PREBOOT 1035c609719bSwdenk 1036c609719bSwdenk When this option is #defined, the existence of the 1037c609719bSwdenk environment variable "preboot" will be checked 1038c609719bSwdenk immediately before starting the CONFIG_BOOTDELAY 1039c609719bSwdenk countdown and/or running the auto-boot command resp. 1040c609719bSwdenk entering interactive mode. 1041c609719bSwdenk 1042c609719bSwdenk This feature is especially useful when "preboot" is 1043c609719bSwdenk automatically generated or modified. For an example 1044c609719bSwdenk see the LWMON board specific code: here "preboot" is 1045c609719bSwdenk modified when the user holds down a certain 1046c609719bSwdenk combination of keys on the (special) keyboard when 1047c609719bSwdenk booting the systems 1048c609719bSwdenk 1049c609719bSwdenk- Serial Download Echo Mode: 1050c609719bSwdenk CONFIG_LOADS_ECHO 1051c609719bSwdenk If defined to 1, all characters received during a 1052c609719bSwdenk serial download (using the "loads" command) are 1053c609719bSwdenk echoed back. This might be needed by some terminal 1054c609719bSwdenk emulations (like "cu"), but may as well just take 1055c609719bSwdenk time on others. This setting #define's the initial 1056c609719bSwdenk value of the "loads_echo" environment variable. 1057c609719bSwdenk 1058602ad3b3SJon Loeliger- Kgdb Serial Baudrate: (if CONFIG_CMD_KGDB is defined) 1059c609719bSwdenk CONFIG_KGDB_BAUDRATE 1060c609719bSwdenk Select one of the baudrates listed in 10616d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BAUDRATE_TABLE, see below. 1062c609719bSwdenk 1063c609719bSwdenk- Monitor Functions: 1064602ad3b3SJon Loeliger Monitor commands can be included or excluded 1065602ad3b3SJon Loeliger from the build by using the #include files 1066c6c621bdSStephen Warren <config_cmd_all.h> and #undef'ing unwanted 1067c6c621bdSStephen Warren commands, or using <config_cmd_default.h> 1068602ad3b3SJon Loeliger and augmenting with additional #define's 1069602ad3b3SJon Loeliger for wanted commands. 1070c609719bSwdenk 1071602ad3b3SJon Loeliger The default command configuration includes all commands 1072602ad3b3SJon Loeliger except those marked below with a "*". 1073602ad3b3SJon Loeliger 1074b401b73dSMarek Vasut CONFIG_CMD_AES AES 128 CBC encrypt/decrypt 1075602ad3b3SJon Loeliger CONFIG_CMD_ASKENV * ask for env variable 1076602ad3b3SJon Loeliger CONFIG_CMD_BDI bdinfo 1077602ad3b3SJon Loeliger CONFIG_CMD_BEDBUG * Include BedBug Debugger 1078602ad3b3SJon Loeliger CONFIG_CMD_BMP * BMP support 1079602ad3b3SJon Loeliger CONFIG_CMD_BSP * Board specific commands 1080602ad3b3SJon Loeliger CONFIG_CMD_BOOTD bootd 1081d2b2ffe3STom Rini CONFIG_CMD_BOOTI * ARM64 Linux kernel Image support 1082602ad3b3SJon Loeliger CONFIG_CMD_CACHE * icache, dcache 108308d0d6f3SMichal Simek CONFIG_CMD_CLK * clock command support 1084602ad3b3SJon Loeliger CONFIG_CMD_CONSOLE coninfo 1085710b9938SMike Frysinger CONFIG_CMD_CRC32 * crc32 1086602ad3b3SJon Loeliger CONFIG_CMD_DATE * support for RTC, date/time... 1087602ad3b3SJon Loeliger CONFIG_CMD_DHCP * DHCP support 1088602ad3b3SJon Loeliger CONFIG_CMD_DIAG * Diagnostics 1089a7c93104SPeter Tyser CONFIG_CMD_DS4510 * ds4510 I2C gpio commands 1090a7c93104SPeter Tyser CONFIG_CMD_DS4510_INFO * ds4510 I2C info command 1091a7c93104SPeter Tyser CONFIG_CMD_DS4510_MEM * ds4510 I2C eeprom/sram commansd 1092a7c93104SPeter Tyser CONFIG_CMD_DS4510_RST * ds4510 I2C rst command 1093602ad3b3SJon Loeliger CONFIG_CMD_DTT * Digital Therm and Thermostat 1094602ad3b3SJon Loeliger CONFIG_CMD_ECHO echo arguments 1095246c6922SPeter Tyser CONFIG_CMD_EDITENV edit env variable 1096602ad3b3SJon Loeliger CONFIG_CMD_EEPROM * EEPROM read/write support 1097602ad3b3SJon Loeliger CONFIG_CMD_ELF * bootelf, bootvx 10985e2b3e0cSJoe Hershberger CONFIG_CMD_ENV_CALLBACK * display details about env callbacks 1099fffad71bSJoe Hershberger CONFIG_CMD_ENV_FLAGS * display details about env flags 110088733e2cSAndrew Ruder CONFIG_CMD_ENV_EXISTS * check existence of env variable 11010c79cda0SMike Frysinger CONFIG_CMD_EXPORTENV * export the environment 110203e2ecf6SStephen Warren CONFIG_CMD_EXT2 * ext2 command support 110303e2ecf6SStephen Warren CONFIG_CMD_EXT4 * ext4 command support 110416f4d933SStephen Warren CONFIG_CMD_FS_GENERIC * filesystem commands (e.g. load, ls) 110516f4d933SStephen Warren that work for multiple fs types 1106bdab39d3SMike Frysinger CONFIG_CMD_SAVEENV saveenv 1107602ad3b3SJon Loeliger CONFIG_CMD_FDC * Floppy Disk Support 110803e2ecf6SStephen Warren CONFIG_CMD_FAT * FAT command support 1109602ad3b3SJon Loeliger CONFIG_CMD_FLASH flinfo, erase, protect 1110602ad3b3SJon Loeliger CONFIG_CMD_FPGA FPGA device initialization support 11114d98b5c8SVincent Stehlé CONFIG_CMD_FUSE * Device fuse support 111253fdc7efSAnton Staaf CONFIG_CMD_GETTIME * Get time since boot 1113a641b979SMike Frysinger CONFIG_CMD_GO * the 'go' command (exec code) 1114a000b795SKim Phillips CONFIG_CMD_GREPENV * search environment 1115bf36c5d5SSimon Glass CONFIG_CMD_HASH * calculate hash / digest 1116602ad3b3SJon Loeliger CONFIG_CMD_HWFLOW * RTS/CTS hw flow control 1117602ad3b3SJon Loeliger CONFIG_CMD_I2C * I2C serial bus support 1118602ad3b3SJon Loeliger CONFIG_CMD_IDE * IDE harddisk support 1119602ad3b3SJon Loeliger CONFIG_CMD_IMI iminfo 11208fdf1e0fSVipin Kumar CONFIG_CMD_IMLS List all images found in NOR flash 11214d98b5c8SVincent Stehlé CONFIG_CMD_IMLS_NAND * List all images found in NAND flash 1122602ad3b3SJon Loeliger CONFIG_CMD_IMMAP * IMMR dump support 1123aa53233aSSimon Glass CONFIG_CMD_IOTRACE * I/O tracing for debugging 11240c79cda0SMike Frysinger CONFIG_CMD_IMPORTENV * import an environment 1125c167cc02SJoe Hershberger CONFIG_CMD_INI * import data from an ini file into the env 1126602ad3b3SJon Loeliger CONFIG_CMD_IRQ * irqinfo 1127602ad3b3SJon Loeliger CONFIG_CMD_ITEST Integer/string test of 2 values 1128602ad3b3SJon Loeliger CONFIG_CMD_JFFS2 * JFFS2 Support 1129602ad3b3SJon Loeliger CONFIG_CMD_KGDB * kgdb 11304d98b5c8SVincent Stehlé CONFIG_CMD_LDRINFO * ldrinfo (display Blackfin loader) 1131d22c338eSJoe Hershberger CONFIG_CMD_LINK_LOCAL * link-local IP address auto-configuration 1132d22c338eSJoe Hershberger (169.254.*.*) 1133602ad3b3SJon Loeliger CONFIG_CMD_LOADB loadb 1134602ad3b3SJon Loeliger CONFIG_CMD_LOADS loads 11354d98b5c8SVincent Stehlé CONFIG_CMD_MD5SUM * print md5 message digest 113602c9aa1dSRobin Getz (requires CONFIG_CMD_MEMORY and CONFIG_MD5) 113715a33e49SSimon Glass CONFIG_CMD_MEMINFO * Display detailed memory information 1138602ad3b3SJon Loeliger CONFIG_CMD_MEMORY md, mm, nm, mw, cp, cmp, crc, base, 1139a2681707SWolfgang Denk loop, loopw 11404d98b5c8SVincent Stehlé CONFIG_CMD_MEMTEST * mtest 1141602ad3b3SJon Loeliger CONFIG_CMD_MISC Misc functions like sleep etc 1142602ad3b3SJon Loeliger CONFIG_CMD_MMC * MMC memory mapped support 1143602ad3b3SJon Loeliger CONFIG_CMD_MII * MII utility commands 114468d7d651SStefan Roese CONFIG_CMD_MTDPARTS * MTD partition support 1145602ad3b3SJon Loeliger CONFIG_CMD_NAND * NAND support 1146602ad3b3SJon Loeliger CONFIG_CMD_NET bootp, tftpboot, rarpboot 11474d98b5c8SVincent Stehlé CONFIG_CMD_NFS NFS support 1148e92739d3SPeter Tyser CONFIG_CMD_PCA953X * PCA953x I2C gpio commands 1149e92739d3SPeter Tyser CONFIG_CMD_PCA953X_INFO * PCA953x I2C gpio info command 1150602ad3b3SJon Loeliger CONFIG_CMD_PCI * pciinfo 1151602ad3b3SJon Loeliger CONFIG_CMD_PCMCIA * PCMCIA support 1152602ad3b3SJon Loeliger CONFIG_CMD_PING * send ICMP ECHO_REQUEST to network 1153602ad3b3SJon Loeliger host 1154602ad3b3SJon Loeliger CONFIG_CMD_PORTIO * Port I/O 1155ff048ea9SKenneth Waters CONFIG_CMD_READ * Read raw data from partition 1156602ad3b3SJon Loeliger CONFIG_CMD_REGINFO * Register dump 1157602ad3b3SJon Loeliger CONFIG_CMD_RUN run command in env variable 1158d304931fSSimon Glass CONFIG_CMD_SANDBOX * sb command to access sandbox features 1159602ad3b3SJon Loeliger CONFIG_CMD_SAVES * save S record dump 1160602ad3b3SJon Loeliger CONFIG_CMD_SCSI * SCSI Support 1161602ad3b3SJon Loeliger CONFIG_CMD_SDRAM * print SDRAM configuration information 1162602ad3b3SJon Loeliger (requires CONFIG_CMD_I2C) 1163602ad3b3SJon Loeliger CONFIG_CMD_SETGETDCR Support for DCR Register access 1164602ad3b3SJon Loeliger (4xx only) 1165f61ec45eSEric Nelson CONFIG_CMD_SF * Read/write/erase SPI NOR flash 11664d98b5c8SVincent Stehlé CONFIG_CMD_SHA1SUM * print sha1 memory digest 116702c9aa1dSRobin Getz (requires CONFIG_CMD_MEMORY) 11687d861d95SBob Liu CONFIG_CMD_SOFTSWITCH * Soft switch setting command for BF60x 116974de7aefSWolfgang Denk CONFIG_CMD_SOURCE "source" command Support 1170602ad3b3SJon Loeliger CONFIG_CMD_SPI * SPI serial bus support 11717a83af07SLuca Ceresoli CONFIG_CMD_TFTPSRV * TFTP transfer in server mode 11721fb7cd49SSimon Glass CONFIG_CMD_TFTPPUT * TFTP put command (upload) 1173da83bcd7SJoe Hershberger CONFIG_CMD_TIME * run command and report execution time (ARM specific) 1174da83bcd7SJoe Hershberger CONFIG_CMD_TIMER * access to the system tick timer 1175602ad3b3SJon Loeliger CONFIG_CMD_USB * USB support 1176602ad3b3SJon Loeliger CONFIG_CMD_CDP * Cisco Discover Protocol support 1177c8339f51SMarek Vasut CONFIG_CMD_MFSL * Microblaze FSL support 11784d98b5c8SVincent Stehlé CONFIG_CMD_XIMG Load part of Multi Image 117989c8230dSPrzemyslaw Marczak CONFIG_CMD_UUID * Generate random UUID or GUID string 1180c609719bSwdenk 1181c609719bSwdenk EXAMPLE: If you want all functions except of network 1182c609719bSwdenk support you can write: 1183c609719bSwdenk 1184602ad3b3SJon Loeliger #include "config_cmd_all.h" 1185602ad3b3SJon Loeliger #undef CONFIG_CMD_NET 1186c609719bSwdenk 1187213bf8c8SGerald Van Baren Other Commands: 1188213bf8c8SGerald Van Baren fdt (flattened device tree) command: CONFIG_OF_LIBFDT 1189c609719bSwdenk 1190c609719bSwdenk Note: Don't enable the "icache" and "dcache" commands 1191602ad3b3SJon Loeliger (configuration option CONFIG_CMD_CACHE) unless you know 1192c609719bSwdenk what you (and your U-Boot users) are doing. Data 1193c609719bSwdenk cache cannot be enabled on systems like the 8xx or 1194c609719bSwdenk 8260 (where accesses to the IMMR region must be 1195c609719bSwdenk uncached), and it cannot be disabled on all other 1196c609719bSwdenk systems where we (mis-) use the data cache to hold an 1197c609719bSwdenk initial stack and some data. 1198c609719bSwdenk 1199c609719bSwdenk 1200c609719bSwdenk XXX - this list needs to get updated! 1201c609719bSwdenk 1202a5ecbe62SWolfgang Denk- Regular expression support: 1203a5ecbe62SWolfgang Denk CONFIG_REGEX 1204a5ecbe62SWolfgang Denk If this variable is defined, U-Boot is linked against 1205a5ecbe62SWolfgang Denk the SLRE (Super Light Regular Expression) library, 1206a5ecbe62SWolfgang Denk which adds regex support to some commands, as for 1207a5ecbe62SWolfgang Denk example "env grep" and "setexpr". 1208a5ecbe62SWolfgang Denk 120945ba8077SSimon Glass- Device tree: 121045ba8077SSimon Glass CONFIG_OF_CONTROL 121145ba8077SSimon Glass If this variable is defined, U-Boot will use a device tree 121245ba8077SSimon Glass to configure its devices, instead of relying on statically 121345ba8077SSimon Glass compiled #defines in the board file. This option is 121445ba8077SSimon Glass experimental and only available on a few boards. The device 121545ba8077SSimon Glass tree is available in the global data as gd->fdt_blob. 121645ba8077SSimon Glass 12172c0f79e4SSimon Glass U-Boot needs to get its device tree from somewhere. This can 12182c0f79e4SSimon Glass be done using one of the two options below: 1219bbb0b128SSimon Glass 1220bbb0b128SSimon Glass CONFIG_OF_EMBED 1221bbb0b128SSimon Glass If this variable is defined, U-Boot will embed a device tree 1222bbb0b128SSimon Glass binary in its image. This device tree file should be in the 1223bbb0b128SSimon Glass board directory and called <soc>-<board>.dts. The binary file 1224bbb0b128SSimon Glass is then picked up in board_init_f() and made available through 1225bbb0b128SSimon Glass the global data structure as gd->blob. 122645ba8077SSimon Glass 12272c0f79e4SSimon Glass CONFIG_OF_SEPARATE 12282c0f79e4SSimon Glass If this variable is defined, U-Boot will build a device tree 12292c0f79e4SSimon Glass binary. It will be called u-boot.dtb. Architecture-specific 12302c0f79e4SSimon Glass code will locate it at run-time. Generally this works by: 12312c0f79e4SSimon Glass 12322c0f79e4SSimon Glass cat u-boot.bin u-boot.dtb >image.bin 12332c0f79e4SSimon Glass 12342c0f79e4SSimon Glass and in fact, U-Boot does this for you, creating a file called 12352c0f79e4SSimon Glass u-boot-dtb.bin which is useful in the common case. You can 12362c0f79e4SSimon Glass still use the individual files if you need something more 12372c0f79e4SSimon Glass exotic. 12382c0f79e4SSimon Glass 1239c609719bSwdenk- Watchdog: 1240c609719bSwdenk CONFIG_WATCHDOG 1241c609719bSwdenk If this variable is defined, it enables watchdog 12426abe6fb6SDetlev Zundel support for the SoC. There must be support in the SoC 12436abe6fb6SDetlev Zundel specific code for a watchdog. For the 8xx and 8260 12446abe6fb6SDetlev Zundel CPUs, the SIU Watchdog feature is enabled in the SYPCR 12456abe6fb6SDetlev Zundel register. When supported for a specific SoC is 12466abe6fb6SDetlev Zundel available, then no further board specific code should 12476abe6fb6SDetlev Zundel be needed to use it. 12486abe6fb6SDetlev Zundel 12496abe6fb6SDetlev Zundel CONFIG_HW_WATCHDOG 12506abe6fb6SDetlev Zundel When using a watchdog circuitry external to the used 12516abe6fb6SDetlev Zundel SoC, then define this variable and provide board 12526abe6fb6SDetlev Zundel specific code for the "hw_watchdog_reset" function. 1253c609719bSwdenk 1254c1551ea8Sstroese- U-Boot Version: 1255c1551ea8Sstroese CONFIG_VERSION_VARIABLE 1256c1551ea8Sstroese If this variable is defined, an environment variable 1257c1551ea8Sstroese named "ver" is created by U-Boot showing the U-Boot 1258c1551ea8Sstroese version as printed by the "version" command. 1259a1ea8e51SBenoît Thébaudeau Any change to this variable will be reverted at the 1260a1ea8e51SBenoît Thébaudeau next reset. 1261c1551ea8Sstroese 1262c609719bSwdenk- Real-Time Clock: 1263c609719bSwdenk 1264602ad3b3SJon Loeliger When CONFIG_CMD_DATE is selected, the type of the RTC 1265c609719bSwdenk has to be selected, too. Define exactly one of the 1266c609719bSwdenk following options: 1267c609719bSwdenk 1268c609719bSwdenk CONFIG_RTC_MPC8xx - use internal RTC of MPC8xx 1269c609719bSwdenk CONFIG_RTC_PCF8563 - use Philips PCF8563 RTC 12704e8b7544SFabio Estevam CONFIG_RTC_MC13XXX - use MC13783 or MC13892 RTC 1271c609719bSwdenk CONFIG_RTC_MC146818 - use MC146818 RTC 12721cb8e980Swdenk CONFIG_RTC_DS1307 - use Maxim, Inc. DS1307 RTC 1273c609719bSwdenk CONFIG_RTC_DS1337 - use Maxim, Inc. DS1337 RTC 12747f70e853Swdenk CONFIG_RTC_DS1338 - use Maxim, Inc. DS1338 RTC 1275412921d2SMarkus Niebel CONFIG_RTC_DS1339 - use Maxim, Inc. DS1339 RTC 12763bac3513Swdenk CONFIG_RTC_DS164x - use Dallas DS164x RTC 12779536dfccSTor Krill CONFIG_RTC_ISL1208 - use Intersil ISL1208 RTC 12784c0d4c3bSwdenk CONFIG_RTC_MAX6900 - use Maxim, Inc. MAX6900 RTC 12796d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_RTC_DS1337_NOOSC - Turn off the OSC output for DS1337 128071d19f30SHeiko Schocher CONFIG_SYS_RV3029_TCR - enable trickle charger on 128171d19f30SHeiko Schocher RV3029 RTC. 1282c609719bSwdenk 1283b37c7e5eSwdenk Note that if the RTC uses I2C, then the I2C interface 1284b37c7e5eSwdenk must also be configured. See I2C Support, below. 1285b37c7e5eSwdenk 1286e92739d3SPeter Tyser- GPIO Support: 1287e92739d3SPeter Tyser CONFIG_PCA953X - use NXP's PCA953X series I2C GPIO 1288e92739d3SPeter Tyser 12895dec49caSChris Packham The CONFIG_SYS_I2C_PCA953X_WIDTH option specifies a list of 12905dec49caSChris Packham chip-ngpio pairs that tell the PCA953X driver the number of 12915dec49caSChris Packham pins supported by a particular chip. 12925dec49caSChris Packham 1293e92739d3SPeter Tyser Note that if the GPIO device uses I2C, then the I2C interface 1294e92739d3SPeter Tyser must also be configured. See I2C Support, below. 1295e92739d3SPeter Tyser 1296aa53233aSSimon Glass- I/O tracing: 1297aa53233aSSimon Glass When CONFIG_IO_TRACE is selected, U-Boot intercepts all I/O 1298aa53233aSSimon Glass accesses and can checksum them or write a list of them out 1299aa53233aSSimon Glass to memory. See the 'iotrace' command for details. This is 1300aa53233aSSimon Glass useful for testing device drivers since it can confirm that 1301aa53233aSSimon Glass the driver behaves the same way before and after a code 1302aa53233aSSimon Glass change. Currently this is supported on sandbox and arm. To 1303aa53233aSSimon Glass add support for your architecture, add '#include <iotrace.h>' 1304aa53233aSSimon Glass to the bottom of arch/<arch>/include/asm/io.h and test. 1305aa53233aSSimon Glass 1306aa53233aSSimon Glass Example output from the 'iotrace stats' command is below. 1307aa53233aSSimon Glass Note that if the trace buffer is exhausted, the checksum will 1308aa53233aSSimon Glass still continue to operate. 1309aa53233aSSimon Glass 1310aa53233aSSimon Glass iotrace is enabled 1311aa53233aSSimon Glass Start: 10000000 (buffer start address) 1312aa53233aSSimon Glass Size: 00010000 (buffer size) 1313aa53233aSSimon Glass Offset: 00000120 (current buffer offset) 1314aa53233aSSimon Glass Output: 10000120 (start + offset) 1315aa53233aSSimon Glass Count: 00000018 (number of trace records) 1316aa53233aSSimon Glass CRC32: 9526fb66 (CRC32 of all trace records) 1317aa53233aSSimon Glass 1318c609719bSwdenk- Timestamp Support: 1319c609719bSwdenk 1320c609719bSwdenk When CONFIG_TIMESTAMP is selected, the timestamp 1321c609719bSwdenk (date and time) of an image is printed by image 1322c609719bSwdenk commands like bootm or iminfo. This option is 1323602ad3b3SJon Loeliger automatically enabled when you select CONFIG_CMD_DATE . 1324c609719bSwdenk 1325923c46f9SKarl O. Pinc- Partition Labels (disklabels) Supported: 1326923c46f9SKarl O. Pinc Zero or more of the following: 1327923c46f9SKarl O. Pinc CONFIG_MAC_PARTITION Apple's MacOS partition table. 1328923c46f9SKarl O. Pinc CONFIG_DOS_PARTITION MS Dos partition table, traditional on the 1329923c46f9SKarl O. Pinc Intel architecture, USB sticks, etc. 1330923c46f9SKarl O. Pinc CONFIG_ISO_PARTITION ISO partition table, used on CDROM etc. 1331923c46f9SKarl O. Pinc CONFIG_EFI_PARTITION GPT partition table, common when EFI is the 1332923c46f9SKarl O. Pinc bootloader. Note 2TB partition limit; see 1333923c46f9SKarl O. Pinc disk/part_efi.c 1334923c46f9SKarl O. Pinc CONFIG_MTD_PARTITIONS Memory Technology Device partition table. 1335c609719bSwdenk 1336602ad3b3SJon Loeliger If IDE or SCSI support is enabled (CONFIG_CMD_IDE or 1337218ca724SWolfgang Denk CONFIG_CMD_SCSI) you must configure support for at 1338923c46f9SKarl O. Pinc least one non-MTD partition type as well. 1339c609719bSwdenk 1340c609719bSwdenk- IDE Reset method: 13414d13cbadSwdenk CONFIG_IDE_RESET_ROUTINE - this is defined in several 13424d13cbadSwdenk board configurations files but used nowhere! 1343c609719bSwdenk 13444d13cbadSwdenk CONFIG_IDE_RESET - is this is defined, IDE Reset will 13454d13cbadSwdenk be performed by calling the function 13464d13cbadSwdenk ide_set_reset(int reset) 13474d13cbadSwdenk which has to be defined in a board specific file 1348c609719bSwdenk 1349c609719bSwdenk- ATAPI Support: 1350c609719bSwdenk CONFIG_ATAPI 1351c609719bSwdenk 1352c609719bSwdenk Set this to enable ATAPI support. 1353c609719bSwdenk 1354c40b2956Swdenk- LBA48 Support 1355c40b2956Swdenk CONFIG_LBA48 1356c40b2956Swdenk 1357c40b2956Swdenk Set this to enable support for disks larger than 137GB 13584b142febSHeiko Schocher Also look at CONFIG_SYS_64BIT_LBA. 1359c40b2956Swdenk Whithout these , LBA48 support uses 32bit variables and will 'only' 1360c40b2956Swdenk support disks up to 2.1TB. 1361c40b2956Swdenk 13626d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_64BIT_LBA: 1363c40b2956Swdenk When enabled, makes the IDE subsystem use 64bit sector addresses. 1364c40b2956Swdenk Default is 32bit. 1365c40b2956Swdenk 1366c609719bSwdenk- SCSI Support: 1367c609719bSwdenk At the moment only there is only support for the 1368c609719bSwdenk SYM53C8XX SCSI controller; define 1369c609719bSwdenk CONFIG_SCSI_SYM53C8XX to enable it. 1370c609719bSwdenk 13716d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_LUN [8], CONFIG_SYS_SCSI_MAX_SCSI_ID [7] and 13726d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_DEVICE [CONFIG_SYS_SCSI_MAX_SCSI_ID * 13736d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_LUN] can be adjusted to define the 1374c609719bSwdenk maximum numbers of LUNs, SCSI ID's and target 1375c609719bSwdenk devices. 13766d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_SYM53C8XX_CCF to fix clock timing (80Mhz) 1377c609719bSwdenk 1378447c031bSStefan Reinauer The environment variable 'scsidevs' is set to the number of 1379447c031bSStefan Reinauer SCSI devices found during the last scan. 1380447c031bSStefan Reinauer 1381c609719bSwdenk- NETWORK Support (PCI): 1382682011ffSwdenk CONFIG_E1000 1383ce5207e1SKyle Moffett Support for Intel 8254x/8257x gigabit chips. 1384ce5207e1SKyle Moffett 1385ce5207e1SKyle Moffett CONFIG_E1000_SPI 1386ce5207e1SKyle Moffett Utility code for direct access to the SPI bus on Intel 8257x. 1387ce5207e1SKyle Moffett This does not do anything useful unless you set at least one 1388ce5207e1SKyle Moffett of CONFIG_CMD_E1000 or CONFIG_E1000_SPI_GENERIC. 1389ce5207e1SKyle Moffett 1390ce5207e1SKyle Moffett CONFIG_E1000_SPI_GENERIC 1391ce5207e1SKyle Moffett Allow generic access to the SPI bus on the Intel 8257x, for 1392ce5207e1SKyle Moffett example with the "sspi" command. 1393ce5207e1SKyle Moffett 1394ce5207e1SKyle Moffett CONFIG_CMD_E1000 1395ce5207e1SKyle Moffett Management command for E1000 devices. When used on devices 1396ce5207e1SKyle Moffett with SPI support you can reprogram the EEPROM from U-Boot. 1397682011ffSwdenk 1398ac3315c2SAndre Schwarz CONFIG_E1000_FALLBACK_MAC 139911ccc33fSMarcel Ziswiler default MAC for empty EEPROM after production. 1400ac3315c2SAndre Schwarz 1401c609719bSwdenk CONFIG_EEPRO100 1402c609719bSwdenk Support for Intel 82557/82559/82559ER chips. 140311ccc33fSMarcel Ziswiler Optional CONFIG_EEPRO100_SROM_WRITE enables EEPROM 1404c609719bSwdenk write routine for first time initialisation. 1405c609719bSwdenk 1406c609719bSwdenk CONFIG_TULIP 1407c609719bSwdenk Support for Digital 2114x chips. 1408c609719bSwdenk Optional CONFIG_TULIP_SELECT_MEDIA for board specific 1409c609719bSwdenk modem chip initialisation (KS8761/QS6611). 1410c609719bSwdenk 1411c609719bSwdenk CONFIG_NATSEMI 1412c609719bSwdenk Support for National dp83815 chips. 1413c609719bSwdenk 1414c609719bSwdenk CONFIG_NS8382X 1415c609719bSwdenk Support for National dp8382[01] gigabit chips. 1416c609719bSwdenk 141745219c46Swdenk- NETWORK Support (other): 141845219c46Swdenk 1419c041e9d2SJens Scharsig CONFIG_DRIVER_AT91EMAC 1420c041e9d2SJens Scharsig Support for AT91RM9200 EMAC. 1421c041e9d2SJens Scharsig 1422c041e9d2SJens Scharsig CONFIG_RMII 1423c041e9d2SJens Scharsig Define this to use reduced MII inteface 1424c041e9d2SJens Scharsig 1425c041e9d2SJens Scharsig CONFIG_DRIVER_AT91EMAC_QUIET 1426c041e9d2SJens Scharsig If this defined, the driver is quiet. 1427c041e9d2SJens Scharsig The driver doen't show link status messages. 1428c041e9d2SJens Scharsig 1429efdd7319SRob Herring CONFIG_CALXEDA_XGMAC 1430efdd7319SRob Herring Support for the Calxeda XGMAC device 1431efdd7319SRob Herring 14323bb46d23SAshok CONFIG_LAN91C96 143345219c46Swdenk Support for SMSC's LAN91C96 chips. 143445219c46Swdenk 143545219c46Swdenk CONFIG_LAN91C96_BASE 143645219c46Swdenk Define this to hold the physical address 143745219c46Swdenk of the LAN91C96's I/O space 143845219c46Swdenk 143945219c46Swdenk CONFIG_LAN91C96_USE_32_BIT 144045219c46Swdenk Define this to enable 32 bit addressing 144145219c46Swdenk 14423bb46d23SAshok CONFIG_SMC91111 1443f39748aeSwdenk Support for SMSC's LAN91C111 chip 1444f39748aeSwdenk 1445f39748aeSwdenk CONFIG_SMC91111_BASE 1446f39748aeSwdenk Define this to hold the physical address 1447f39748aeSwdenk of the device (I/O space) 1448f39748aeSwdenk 1449f39748aeSwdenk CONFIG_SMC_USE_32_BIT 1450f39748aeSwdenk Define this if data bus is 32 bits 1451f39748aeSwdenk 1452f39748aeSwdenk CONFIG_SMC_USE_IOFUNCS 1453f39748aeSwdenk Define this to use i/o functions instead of macros 1454f39748aeSwdenk (some hardware wont work with macros) 1455f39748aeSwdenk 1456dc02badaSHeiko Schocher CONFIG_DRIVER_TI_EMAC 1457dc02badaSHeiko Schocher Support for davinci emac 1458dc02badaSHeiko Schocher 1459dc02badaSHeiko Schocher CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT 1460dc02badaSHeiko Schocher Define this if you have more then 3 PHYs. 1461dc02badaSHeiko Schocher 1462b3dbf4a5SMacpaul Lin CONFIG_FTGMAC100 1463b3dbf4a5SMacpaul Lin Support for Faraday's FTGMAC100 Gigabit SoC Ethernet 1464b3dbf4a5SMacpaul Lin 1465b3dbf4a5SMacpaul Lin CONFIG_FTGMAC100_EGIGA 1466b3dbf4a5SMacpaul Lin Define this to use GE link update with gigabit PHY. 1467b3dbf4a5SMacpaul Lin Define this if FTGMAC100 is connected to gigabit PHY. 1468b3dbf4a5SMacpaul Lin If your system has 10/100 PHY only, it might not occur 1469b3dbf4a5SMacpaul Lin wrong behavior. Because PHY usually return timeout or 1470b3dbf4a5SMacpaul Lin useless data when polling gigabit status and gigabit 1471b3dbf4a5SMacpaul Lin control registers. This behavior won't affect the 1472b3dbf4a5SMacpaul Lin correctnessof 10/100 link speed update. 1473b3dbf4a5SMacpaul Lin 1474c2fff331SMike Rapoport CONFIG_SMC911X 1475557b377dSJens Gehrlein Support for SMSC's LAN911x and LAN921x chips 1476557b377dSJens Gehrlein 1477c2fff331SMike Rapoport CONFIG_SMC911X_BASE 1478557b377dSJens Gehrlein Define this to hold the physical address 1479557b377dSJens Gehrlein of the device (I/O space) 1480557b377dSJens Gehrlein 1481c2fff331SMike Rapoport CONFIG_SMC911X_32_BIT 1482557b377dSJens Gehrlein Define this if data bus is 32 bits 1483557b377dSJens Gehrlein 1484c2fff331SMike Rapoport CONFIG_SMC911X_16_BIT 1485557b377dSJens Gehrlein Define this if data bus is 16 bits. If your processor 1486557b377dSJens Gehrlein automatically converts one 32 bit word to two 16 bit 1487c2fff331SMike Rapoport words you may also try CONFIG_SMC911X_32_BIT. 1488557b377dSJens Gehrlein 14893d0075faSYoshihiro Shimoda CONFIG_SH_ETHER 14903d0075faSYoshihiro Shimoda Support for Renesas on-chip Ethernet controller 14913d0075faSYoshihiro Shimoda 14923d0075faSYoshihiro Shimoda CONFIG_SH_ETHER_USE_PORT 14933d0075faSYoshihiro Shimoda Define the number of ports to be used 14943d0075faSYoshihiro Shimoda 14953d0075faSYoshihiro Shimoda CONFIG_SH_ETHER_PHY_ADDR 14963d0075faSYoshihiro Shimoda Define the ETH PHY's address 14973d0075faSYoshihiro Shimoda 149868260aabSYoshihiro Shimoda CONFIG_SH_ETHER_CACHE_WRITEBACK 149968260aabSYoshihiro Shimoda If this option is set, the driver enables cache flush. 150068260aabSYoshihiro Shimoda 1501b2f97cf2SHeiko Schocher- PWM Support: 1502b2f97cf2SHeiko Schocher CONFIG_PWM_IMX 1503b2f97cf2SHeiko Schocher Support for PWM modul on the imx6. 1504b2f97cf2SHeiko Schocher 15055e124724SVadim Bendebury- TPM Support: 150690899cc0SChe-liang Chiou CONFIG_TPM 150790899cc0SChe-liang Chiou Support TPM devices. 150890899cc0SChe-liang Chiou 15091b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C 15101b393db5STom Wai-Hong Tam Support for i2c bus TPM devices. Only one device 15111b393db5STom Wai-Hong Tam per system is supported at this time. 15121b393db5STom Wai-Hong Tam 15131b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_BUS_NUMBER 15141b393db5STom Wai-Hong Tam Define the the i2c bus number for the TPM device 15151b393db5STom Wai-Hong Tam 15161b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_SLAVE_ADDRESS 15171b393db5STom Wai-Hong Tam Define the TPM's address on the i2c bus 15181b393db5STom Wai-Hong Tam 15191b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_BURST_LIMITATION 15201b393db5STom Wai-Hong Tam Define the burst count bytes upper limit 15211b393db5STom Wai-Hong Tam 1522c01939c7SDirk Eibach CONFIG_TPM_ATMEL_TWI 1523c01939c7SDirk Eibach Support for Atmel TWI TPM device. Requires I2C support. 1524c01939c7SDirk Eibach 152590899cc0SChe-liang Chiou CONFIG_TPM_TIS_LPC 15265e124724SVadim Bendebury Support for generic parallel port TPM devices. Only one device 15275e124724SVadim Bendebury per system is supported at this time. 15285e124724SVadim Bendebury 15295e124724SVadim Bendebury CONFIG_TPM_TIS_BASE_ADDRESS 15305e124724SVadim Bendebury Base address where the generic TPM device is mapped 15315e124724SVadim Bendebury to. Contemporary x86 systems usually map it at 15325e124724SVadim Bendebury 0xfed40000. 15335e124724SVadim Bendebury 1534be6c1529SReinhard Pfau CONFIG_CMD_TPM 1535be6c1529SReinhard Pfau Add tpm monitor functions. 1536be6c1529SReinhard Pfau Requires CONFIG_TPM. If CONFIG_TPM_AUTH_SESSIONS is set, also 1537be6c1529SReinhard Pfau provides monitor access to authorized functions. 1538be6c1529SReinhard Pfau 1539be6c1529SReinhard Pfau CONFIG_TPM 1540be6c1529SReinhard Pfau Define this to enable the TPM support library which provides 1541be6c1529SReinhard Pfau functional interfaces to some TPM commands. 1542be6c1529SReinhard Pfau Requires support for a TPM device. 1543be6c1529SReinhard Pfau 1544be6c1529SReinhard Pfau CONFIG_TPM_AUTH_SESSIONS 1545be6c1529SReinhard Pfau Define this to enable authorized functions in the TPM library. 1546be6c1529SReinhard Pfau Requires CONFIG_TPM and CONFIG_SHA1. 1547be6c1529SReinhard Pfau 1548c609719bSwdenk- USB Support: 1549c609719bSwdenk At the moment only the UHCI host controller is 15504d13cbadSwdenk supported (PIP405, MIP405, MPC5200); define 1551c609719bSwdenk CONFIG_USB_UHCI to enable it. 1552c609719bSwdenk define CONFIG_USB_KEYBOARD to enable the USB Keyboard 155330d56faeSwdenk and define CONFIG_USB_STORAGE to enable the USB 1554c609719bSwdenk storage devices. 1555c609719bSwdenk Note: 1556c609719bSwdenk Supported are USB Keyboards and USB Floppy drives 1557c609719bSwdenk (TEAC FD-05PUB). 15584d13cbadSwdenk MPC5200 USB requires additional defines: 15594d13cbadSwdenk CONFIG_USB_CLOCK 15604d13cbadSwdenk for 528 MHz Clock: 0x0001bbbb 1561307ecb6dSEric Millbrandt CONFIG_PSC3_USB 1562307ecb6dSEric Millbrandt for USB on PSC3 15634d13cbadSwdenk CONFIG_USB_CONFIG 15644d13cbadSwdenk for differential drivers: 0x00001000 15654d13cbadSwdenk for single ended drivers: 0x00005000 1566307ecb6dSEric Millbrandt for differential drivers on PSC3: 0x00000100 1567307ecb6dSEric Millbrandt for single ended drivers on PSC3: 0x00004100 15686d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_EVENT_POLL 1569fdcfaa1bSZhang Wei May be defined to allow interrupt polling 1570fdcfaa1bSZhang Wei instead of using asynchronous interrupts 15714d13cbadSwdenk 15729ab4ce22SSimon Glass CONFIG_USB_EHCI_TXFIFO_THRESH enables setting of the 15739ab4ce22SSimon Glass txfilltuning field in the EHCI controller on reset. 15749ab4ce22SSimon Glass 15756e9e0626SOleksandr Tymoshenko CONFIG_USB_DWC2_REG_ADDR the physical CPU address of the DWC2 15766e9e0626SOleksandr Tymoshenko HW module registers. 15776e9e0626SOleksandr Tymoshenko 157816c8d5e7SWolfgang Denk- USB Device: 157916c8d5e7SWolfgang Denk Define the below if you wish to use the USB console. 158016c8d5e7SWolfgang Denk Once firmware is rebuilt from a serial console issue the 158116c8d5e7SWolfgang Denk command "setenv stdin usbtty; setenv stdout usbtty" and 158211ccc33fSMarcel Ziswiler attach your USB cable. The Unix command "dmesg" should print 158316c8d5e7SWolfgang Denk it has found a new device. The environment variable usbtty 158416c8d5e7SWolfgang Denk can be set to gserial or cdc_acm to enable your device to 158516c8d5e7SWolfgang Denk appear to a USB host as a Linux gserial device or a 158616c8d5e7SWolfgang Denk Common Device Class Abstract Control Model serial device. 158716c8d5e7SWolfgang Denk If you select usbtty = gserial you should be able to enumerate 158816c8d5e7SWolfgang Denk a Linux host by 158916c8d5e7SWolfgang Denk # modprobe usbserial vendor=0xVendorID product=0xProductID 159016c8d5e7SWolfgang Denk else if using cdc_acm, simply setting the environment 159116c8d5e7SWolfgang Denk variable usbtty to be cdc_acm should suffice. The following 159216c8d5e7SWolfgang Denk might be defined in YourBoardName.h 159316c8d5e7SWolfgang Denk 159416c8d5e7SWolfgang Denk CONFIG_USB_DEVICE 159516c8d5e7SWolfgang Denk Define this to build a UDC device 159616c8d5e7SWolfgang Denk 159716c8d5e7SWolfgang Denk CONFIG_USB_TTY 159816c8d5e7SWolfgang Denk Define this to have a tty type of device available to 159916c8d5e7SWolfgang Denk talk to the UDC device 160016c8d5e7SWolfgang Denk 1601f9da0f89SVipin KUMAR CONFIG_USBD_HS 1602f9da0f89SVipin KUMAR Define this to enable the high speed support for usb 1603f9da0f89SVipin KUMAR device and usbtty. If this feature is enabled, a routine 1604f9da0f89SVipin KUMAR int is_usbd_high_speed(void) 1605f9da0f89SVipin KUMAR also needs to be defined by the driver to dynamically poll 1606f9da0f89SVipin KUMAR whether the enumeration has succeded at high speed or full 1607f9da0f89SVipin KUMAR speed. 1608f9da0f89SVipin KUMAR 16096d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CONSOLE_IS_IN_ENV 161016c8d5e7SWolfgang Denk Define this if you want stdin, stdout &/or stderr to 161116c8d5e7SWolfgang Denk be set to usbtty. 161216c8d5e7SWolfgang Denk 161316c8d5e7SWolfgang Denk mpc8xx: 16146d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_EXTC_CLK 0xBLAH 161516c8d5e7SWolfgang Denk Derive USB clock from external clock "blah" 16166d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_USB_EXTC_CLK 0x02 161716c8d5e7SWolfgang Denk 16186d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_BRG_CLK 0xBLAH 161916c8d5e7SWolfgang Denk Derive USB clock from brgclk 16206d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_USB_BRG_CLK 0x04 162116c8d5e7SWolfgang Denk 162216c8d5e7SWolfgang Denk If you have a USB-IF assigned VendorID then you may wish to 162316c8d5e7SWolfgang Denk define your own vendor specific values either in BoardName.h 162416c8d5e7SWolfgang Denk or directly in usbd_vendor_info.h. If you don't define 162516c8d5e7SWolfgang Denk CONFIG_USBD_MANUFACTURER, CONFIG_USBD_PRODUCT_NAME, 162616c8d5e7SWolfgang Denk CONFIG_USBD_VENDORID and CONFIG_USBD_PRODUCTID, then U-Boot 162716c8d5e7SWolfgang Denk should pretend to be a Linux device to it's target host. 162816c8d5e7SWolfgang Denk 162916c8d5e7SWolfgang Denk CONFIG_USBD_MANUFACTURER 163016c8d5e7SWolfgang Denk Define this string as the name of your company for 163116c8d5e7SWolfgang Denk - CONFIG_USBD_MANUFACTURER "my company" 163216c8d5e7SWolfgang Denk 163316c8d5e7SWolfgang Denk CONFIG_USBD_PRODUCT_NAME 163416c8d5e7SWolfgang Denk Define this string as the name of your product 163516c8d5e7SWolfgang Denk - CONFIG_USBD_PRODUCT_NAME "acme usb device" 163616c8d5e7SWolfgang Denk 163716c8d5e7SWolfgang Denk CONFIG_USBD_VENDORID 163816c8d5e7SWolfgang Denk Define this as your assigned Vendor ID from the USB 163916c8d5e7SWolfgang Denk Implementors Forum. This *must* be a genuine Vendor ID 164016c8d5e7SWolfgang Denk to avoid polluting the USB namespace. 164116c8d5e7SWolfgang Denk - CONFIG_USBD_VENDORID 0xFFFF 164216c8d5e7SWolfgang Denk 164316c8d5e7SWolfgang Denk CONFIG_USBD_PRODUCTID 164416c8d5e7SWolfgang Denk Define this as the unique Product ID 164516c8d5e7SWolfgang Denk for your device 164616c8d5e7SWolfgang Denk - CONFIG_USBD_PRODUCTID 0xFFFF 1647c609719bSwdenk 1648d70a560fSIgor Grinberg- ULPI Layer Support: 1649d70a560fSIgor Grinberg The ULPI (UTMI Low Pin (count) Interface) PHYs are supported via 1650d70a560fSIgor Grinberg the generic ULPI layer. The generic layer accesses the ULPI PHY 1651d70a560fSIgor Grinberg via the platform viewport, so you need both the genric layer and 1652d70a560fSIgor Grinberg the viewport enabled. Currently only Chipidea/ARC based 1653d70a560fSIgor Grinberg viewport is supported. 1654d70a560fSIgor Grinberg To enable the ULPI layer support, define CONFIG_USB_ULPI and 1655d70a560fSIgor Grinberg CONFIG_USB_ULPI_VIEWPORT in your board configuration file. 16566d365ea0SLucas Stach If your ULPI phy needs a different reference clock than the 16576d365ea0SLucas Stach standard 24 MHz then you have to define CONFIG_ULPI_REF_CLK to 16586d365ea0SLucas Stach the appropriate value in Hz. 1659c609719bSwdenk 1660c609719bSwdenk- MMC Support: 1661c609719bSwdenk The MMC controller on the Intel PXA is supported. To 1662c609719bSwdenk enable this define CONFIG_MMC. The MMC can be 1663c609719bSwdenk accessed from the boot prompt by mapping the device 1664c609719bSwdenk to physical memory similar to flash. Command line is 1665602ad3b3SJon Loeliger enabled with CONFIG_CMD_MMC. The MMC driver also works with 1666602ad3b3SJon Loeliger the FAT fs. This is enabled with CONFIG_CMD_FAT. 1667c609719bSwdenk 1668afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF 1669afb35666SYoshihiro Shimoda Support for Renesas on-chip MMCIF controller 1670afb35666SYoshihiro Shimoda 1671afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF_ADDR 1672afb35666SYoshihiro Shimoda Define the base address of MMCIF registers 1673afb35666SYoshihiro Shimoda 1674afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF_CLK 1675afb35666SYoshihiro Shimoda Define the clock frequency for MMCIF 1676afb35666SYoshihiro Shimoda 16771fd93c6eSPierre Aubert CONFIG_GENERIC_MMC 16781fd93c6eSPierre Aubert Enable the generic MMC driver 16791fd93c6eSPierre Aubert 16801fd93c6eSPierre Aubert CONFIG_SUPPORT_EMMC_BOOT 16811fd93c6eSPierre Aubert Enable some additional features of the eMMC boot partitions. 16821fd93c6eSPierre Aubert 16831fd93c6eSPierre Aubert CONFIG_SUPPORT_EMMC_RPMB 16841fd93c6eSPierre Aubert Enable the commands for reading, writing and programming the 16851fd93c6eSPierre Aubert key for the Replay Protection Memory Block partition in eMMC. 16861fd93c6eSPierre Aubert 1687b3ba6e94STom Rini- USB Device Firmware Update (DFU) class support: 1688b3ba6e94STom Rini CONFIG_DFU_FUNCTION 1689b3ba6e94STom Rini This enables the USB portion of the DFU USB class 1690b3ba6e94STom Rini 1691b3ba6e94STom Rini CONFIG_CMD_DFU 1692b3ba6e94STom Rini This enables the command "dfu" which is used to have 1693b3ba6e94STom Rini U-Boot create a DFU class device via USB. This command 1694b3ba6e94STom Rini requires that the "dfu_alt_info" environment variable be 1695b3ba6e94STom Rini set and define the alt settings to expose to the host. 1696b3ba6e94STom Rini 1697b3ba6e94STom Rini CONFIG_DFU_MMC 1698b3ba6e94STom Rini This enables support for exposing (e)MMC devices via DFU. 1699b3ba6e94STom Rini 1700c6631764SPantelis Antoniou CONFIG_DFU_NAND 1701c6631764SPantelis Antoniou This enables support for exposing NAND devices via DFU. 1702c6631764SPantelis Antoniou 1703a9479f04SAfzal Mohammed CONFIG_DFU_RAM 1704a9479f04SAfzal Mohammed This enables support for exposing RAM via DFU. 1705a9479f04SAfzal Mohammed Note: DFU spec refer to non-volatile memory usage, but 1706a9479f04SAfzal Mohammed allow usages beyond the scope of spec - here RAM usage, 1707a9479f04SAfzal Mohammed one that would help mostly the developer. 1708a9479f04SAfzal Mohammed 1709e7e75c70SHeiko Schocher CONFIG_SYS_DFU_DATA_BUF_SIZE 1710e7e75c70SHeiko Schocher Dfu transfer uses a buffer before writing data to the 1711e7e75c70SHeiko Schocher raw storage device. Make the size (in bytes) of this buffer 1712e7e75c70SHeiko Schocher configurable. The size of this buffer is also configurable 1713e7e75c70SHeiko Schocher through the "dfu_bufsiz" environment variable. 1714e7e75c70SHeiko Schocher 1715ea2453d5SPantelis Antoniou CONFIG_SYS_DFU_MAX_FILE_SIZE 1716ea2453d5SPantelis Antoniou When updating files rather than the raw storage device, 1717ea2453d5SPantelis Antoniou we use a static buffer to copy the file into and then write 1718ea2453d5SPantelis Antoniou the buffer once we've been given the whole file. Define 1719ea2453d5SPantelis Antoniou this to the maximum filesize (in bytes) for the buffer. 1720ea2453d5SPantelis Antoniou Default is 4 MiB if undefined. 1721ea2453d5SPantelis Antoniou 1722001a8319SHeiko Schocher DFU_DEFAULT_POLL_TIMEOUT 1723001a8319SHeiko Schocher Poll timeout [ms], is the timeout a device can send to the 1724001a8319SHeiko Schocher host. The host must wait for this timeout before sending 1725001a8319SHeiko Schocher a subsequent DFU_GET_STATUS request to the device. 1726001a8319SHeiko Schocher 1727001a8319SHeiko Schocher DFU_MANIFEST_POLL_TIMEOUT 1728001a8319SHeiko Schocher Poll timeout [ms], which the device sends to the host when 1729001a8319SHeiko Schocher entering dfuMANIFEST state. Host waits this timeout, before 1730001a8319SHeiko Schocher sending again an USB request to the device. 1731001a8319SHeiko Schocher 17323aab70afSSebastian Siewior- USB Device Android Fastboot support: 17333aab70afSSebastian Siewior CONFIG_CMD_FASTBOOT 17343aab70afSSebastian Siewior This enables the command "fastboot" which enables the Android 17353aab70afSSebastian Siewior fastboot mode for the platform's USB device. Fastboot is a USB 17363aab70afSSebastian Siewior protocol for downloading images, flashing and device control 17373aab70afSSebastian Siewior used on Android devices. 17383aab70afSSebastian Siewior See doc/README.android-fastboot for more information. 17393aab70afSSebastian Siewior 17403aab70afSSebastian Siewior CONFIG_ANDROID_BOOT_IMAGE 17413aab70afSSebastian Siewior This enables support for booting images which use the Android 17423aab70afSSebastian Siewior image format header. 17433aab70afSSebastian Siewior 17443aab70afSSebastian Siewior CONFIG_USB_FASTBOOT_BUF_ADDR 17453aab70afSSebastian Siewior The fastboot protocol requires a large memory buffer for 17463aab70afSSebastian Siewior downloads. Define this to the starting RAM address to use for 17473aab70afSSebastian Siewior downloaded images. 17483aab70afSSebastian Siewior 17493aab70afSSebastian Siewior CONFIG_USB_FASTBOOT_BUF_SIZE 17503aab70afSSebastian Siewior The fastboot protocol requires a large memory buffer for 17513aab70afSSebastian Siewior downloads. This buffer should be as large as possible for a 17523aab70afSSebastian Siewior platform. Define this to the size available RAM for fastboot. 17533aab70afSSebastian Siewior 1754d1b5ed07SSteve Rae CONFIG_FASTBOOT_FLASH 1755d1b5ed07SSteve Rae The fastboot protocol includes a "flash" command for writing 1756d1b5ed07SSteve Rae the downloaded image to a non-volatile storage device. Define 1757d1b5ed07SSteve Rae this to enable the "fastboot flash" command. 1758d1b5ed07SSteve Rae 1759d1b5ed07SSteve Rae CONFIG_FASTBOOT_FLASH_MMC_DEV 1760d1b5ed07SSteve Rae The fastboot "flash" command requires additional information 1761d1b5ed07SSteve Rae regarding the non-volatile storage device. Define this to 1762d1b5ed07SSteve Rae the eMMC device that fastboot should use to store the image. 1763d1b5ed07SSteve Rae 17646705d81eSwdenk- Journaling Flash filesystem support: 17656705d81eSwdenk CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE, 17666705d81eSwdenk CONFIG_JFFS2_NAND_DEV 17676705d81eSwdenk Define these for a default partition on a NAND device 17686705d81eSwdenk 17696d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS2_FIRST_SECTOR, 17706d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS2_FIRST_BANK, CONFIG_SYS_JFFS2_NUM_BANKS 17716705d81eSwdenk Define these for a default partition on a NOR device 17726705d81eSwdenk 17736d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS_CUSTOM_PART 17746705d81eSwdenk Define this to create an own partition. You have to provide a 17756705d81eSwdenk function struct part_info* jffs2_part_info(int part_num) 17766705d81eSwdenk 17776705d81eSwdenk If you define only one JFFS2 partition you may also want to 17786d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_JFFS_SINGLE_PART 1 17796705d81eSwdenk to disable the command chpart. This is the default when you 17806705d81eSwdenk have not defined a custom partition 17816705d81eSwdenk 1782c30a15e5SDonggeun Kim- FAT(File Allocation Table) filesystem write function support: 1783c30a15e5SDonggeun Kim CONFIG_FAT_WRITE 1784656f4c65SDonggeun Kim 1785656f4c65SDonggeun Kim Define this to enable support for saving memory data as a 1786656f4c65SDonggeun Kim file in FAT formatted partition. 1787656f4c65SDonggeun Kim 1788656f4c65SDonggeun Kim This will also enable the command "fatwrite" enabling the 1789656f4c65SDonggeun Kim user to write files to FAT. 1790c30a15e5SDonggeun Kim 179184cd9327SGabe BlackCBFS (Coreboot Filesystem) support 179284cd9327SGabe Black CONFIG_CMD_CBFS 179384cd9327SGabe Black 179484cd9327SGabe Black Define this to enable support for reading from a Coreboot 179584cd9327SGabe Black filesystem. Available commands are cbfsinit, cbfsinfo, cbfsls 179684cd9327SGabe Black and cbfsload. 179784cd9327SGabe Black 17984f0d1a2aSSiva Durga Prasad Paladugu- FAT(File Allocation Table) filesystem cluster size: 17994f0d1a2aSSiva Durga Prasad Paladugu CONFIG_FS_FAT_MAX_CLUSTSIZE 18004f0d1a2aSSiva Durga Prasad Paladugu 18014f0d1a2aSSiva Durga Prasad Paladugu Define the max cluster size for fat operations else 18024f0d1a2aSSiva Durga Prasad Paladugu a default value of 65536 will be defined. 18034f0d1a2aSSiva Durga Prasad Paladugu 1804c609719bSwdenk- Keyboard Support: 1805c609719bSwdenk CONFIG_ISA_KEYBOARD 1806c609719bSwdenk 1807c609719bSwdenk Define this to enable standard (PC-Style) keyboard 1808c609719bSwdenk support 1809c609719bSwdenk 1810c609719bSwdenk CONFIG_I8042_KBD 1811c609719bSwdenk Standard PC keyboard driver with US (is default) and 1812c609719bSwdenk GERMAN key layout (switch via environment 'keymap=de') support. 1813c609719bSwdenk Export function i8042_kbd_init, i8042_tstc and i8042_getc 1814c609719bSwdenk for cfb_console. Supports cursor blinking. 1815c609719bSwdenk 1816713cb680SHung-ying Tyan CONFIG_CROS_EC_KEYB 1817713cb680SHung-ying Tyan Enables a Chrome OS keyboard using the CROS_EC interface. 1818713cb680SHung-ying Tyan This uses CROS_EC to communicate with a second microcontroller 1819713cb680SHung-ying Tyan which provides key scans on request. 1820713cb680SHung-ying Tyan 1821c609719bSwdenk- Video support: 1822c609719bSwdenk CONFIG_VIDEO 1823c609719bSwdenk 1824c609719bSwdenk Define this to enable video support (for output to 1825c609719bSwdenk video). 1826c609719bSwdenk 1827c609719bSwdenk CONFIG_VIDEO_CT69000 1828c609719bSwdenk 1829c609719bSwdenk Enable Chips & Technologies 69000 Video chip 1830c609719bSwdenk 1831c609719bSwdenk CONFIG_VIDEO_SMI_LYNXEM 1832eeb1b77bSwdenk Enable Silicon Motion SMI 712/710/810 Video chip. The 1833eeb1b77bSwdenk video output is selected via environment 'videoout' 1834eeb1b77bSwdenk (1 = LCD and 2 = CRT). If videoout is undefined, CRT is 1835eeb1b77bSwdenk assumed. 1836c609719bSwdenk 1837eeb1b77bSwdenk For the CT69000 and SMI_LYNXEM drivers, videomode is 183811ccc33fSMarcel Ziswiler selected via environment 'videomode'. Two different ways 1839eeb1b77bSwdenk are possible: 1840eeb1b77bSwdenk - "videomode=num" 'num' is a standard LiLo mode numbers. 1841eeb1b77bSwdenk Following standard modes are supported (* is default): 1842eeb1b77bSwdenk 1843eeb1b77bSwdenk Colors 640x480 800x600 1024x768 1152x864 1280x1024 1844eeb1b77bSwdenk -------------+--------------------------------------------- 1845eeb1b77bSwdenk 8 bits | 0x301* 0x303 0x305 0x161 0x307 1846eeb1b77bSwdenk 15 bits | 0x310 0x313 0x316 0x162 0x319 1847eeb1b77bSwdenk 16 bits | 0x311 0x314 0x317 0x163 0x31A 1848eeb1b77bSwdenk 24 bits | 0x312 0x315 0x318 ? 0x31B 1849eeb1b77bSwdenk -------------+--------------------------------------------- 1850c609719bSwdenk (i.e. setenv videomode 317; saveenv; reset;) 1851c609719bSwdenk 1852eeb1b77bSwdenk - "videomode=bootargs" all the video parameters are parsed 18537817cb20SMarcel Ziswiler from the bootargs. (See drivers/video/videomodes.c) 1854eeb1b77bSwdenk 1855eeb1b77bSwdenk 1856a6c7ad2fSwdenk CONFIG_VIDEO_SED13806 1857a6c7ad2fSwdenk Enable Epson SED13806 driver. This driver supports 8bpp 1858a6c7ad2fSwdenk and 16bpp modes defined by CONFIG_VIDEO_SED13806_8BPP 1859a6c7ad2fSwdenk or CONFIG_VIDEO_SED13806_16BPP 1860a6c7ad2fSwdenk 18617d3053fbSTimur Tabi CONFIG_FSL_DIU_FB 18627d3053fbSTimur Tabi Enable the Freescale DIU video driver. Reference boards for 18637d3053fbSTimur Tabi SOCs that have a DIU should define this macro to enable DIU 18647d3053fbSTimur Tabi support, and should also define these other macros: 18657d3053fbSTimur Tabi 18667d3053fbSTimur Tabi CONFIG_SYS_DIU_ADDR 18677d3053fbSTimur Tabi CONFIG_VIDEO 18687d3053fbSTimur Tabi CONFIG_CMD_BMP 18697d3053fbSTimur Tabi CONFIG_CFB_CONSOLE 18707d3053fbSTimur Tabi CONFIG_VIDEO_SW_CURSOR 18717d3053fbSTimur Tabi CONFIG_VGA_AS_SINGLE_DEVICE 18727d3053fbSTimur Tabi CONFIG_VIDEO_LOGO 18737d3053fbSTimur Tabi CONFIG_VIDEO_BMP_LOGO 18747d3053fbSTimur Tabi 1875ba8e76bdSTimur Tabi The DIU driver will look for the 'video-mode' environment 1876ba8e76bdSTimur Tabi variable, and if defined, enable the DIU as a console during 1877ba8e76bdSTimur Tabi boot. See the documentation file README.video for a 1878ba8e76bdSTimur Tabi description of this variable. 18797d3053fbSTimur Tabi 1880058d59b0SSimon Glass CONFIG_VIDEO_VGA 1881058d59b0SSimon Glass 1882058d59b0SSimon Glass Enable the VGA video / BIOS for x86. The alternative if you 1883058d59b0SSimon Glass are using coreboot is to use the coreboot frame buffer 1884058d59b0SSimon Glass driver. 1885058d59b0SSimon Glass 1886058d59b0SSimon Glass 1887682011ffSwdenk- Keyboard Support: 1888682011ffSwdenk CONFIG_KEYBOARD 1889682011ffSwdenk 1890682011ffSwdenk Define this to enable a custom keyboard support. 1891682011ffSwdenk This simply calls drv_keyboard_init() which must be 1892682011ffSwdenk defined in your board-specific files. 1893682011ffSwdenk The only board using this so far is RBC823. 1894a6c7ad2fSwdenk 1895c609719bSwdenk- LCD Support: CONFIG_LCD 1896c609719bSwdenk 1897c609719bSwdenk Define this to enable LCD support (for output to LCD 1898c609719bSwdenk display); also select one of the supported displays 1899c609719bSwdenk by defining one of these: 1900c609719bSwdenk 190139cf4804SStelian Pop CONFIG_ATMEL_LCD: 190239cf4804SStelian Pop 190339cf4804SStelian Pop HITACHI TX09D70VM1CCA, 3.5", 240x320. 190439cf4804SStelian Pop 1905fd3103bbSwdenk CONFIG_NEC_NL6448AC33: 1906c609719bSwdenk 1907fd3103bbSwdenk NEC NL6448AC33-18. Active, color, single scan. 1908c609719bSwdenk 1909fd3103bbSwdenk CONFIG_NEC_NL6448BC20 1910c609719bSwdenk 1911fd3103bbSwdenk NEC NL6448BC20-08. 6.5", 640x480. 1912fd3103bbSwdenk Active, color, single scan. 1913fd3103bbSwdenk 1914fd3103bbSwdenk CONFIG_NEC_NL6448BC33_54 1915fd3103bbSwdenk 1916fd3103bbSwdenk NEC NL6448BC33-54. 10.4", 640x480. 1917c609719bSwdenk Active, color, single scan. 1918c609719bSwdenk 1919c609719bSwdenk CONFIG_SHARP_16x9 1920c609719bSwdenk 1921c609719bSwdenk Sharp 320x240. Active, color, single scan. 1922c609719bSwdenk It isn't 16x9, and I am not sure what it is. 1923c609719bSwdenk 1924c609719bSwdenk CONFIG_SHARP_LQ64D341 1925c609719bSwdenk 1926c609719bSwdenk Sharp LQ64D341 display, 640x480. 1927c609719bSwdenk Active, color, single scan. 1928c609719bSwdenk 1929c609719bSwdenk CONFIG_HLD1045 1930c609719bSwdenk 1931c609719bSwdenk HLD1045 display, 640x480. 1932c609719bSwdenk Active, color, single scan. 1933c609719bSwdenk 1934c609719bSwdenk CONFIG_OPTREX_BW 1935c609719bSwdenk 1936c609719bSwdenk Optrex CBL50840-2 NF-FW 99 22 M5 1937c609719bSwdenk or 1938c609719bSwdenk Hitachi LMG6912RPFC-00T 1939c609719bSwdenk or 1940c609719bSwdenk Hitachi SP14Q002 1941c609719bSwdenk 1942c609719bSwdenk 320x240. Black & white. 1943c609719bSwdenk 1944c609719bSwdenk Normally display is black on white background; define 19456d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_WHITE_ON_BLACK to get it inverted. 1946c609719bSwdenk 1947676d319eSSimon Glass CONFIG_LCD_ALIGNMENT 1948676d319eSSimon Glass 1949676d319eSSimon Glass Normally the LCD is page-aligned (tyically 4KB). If this is 1950676d319eSSimon Glass defined then the LCD will be aligned to this value instead. 1951676d319eSSimon Glass For ARM it is sometimes useful to use MMU_SECTION_SIZE 1952676d319eSSimon Glass here, since it is cheaper to change data cache settings on 1953676d319eSSimon Glass a per-section basis. 1954676d319eSSimon Glass 19550d89efefSSimon Glass CONFIG_CONSOLE_SCROLL_LINES 19560d89efefSSimon Glass 19570d89efefSSimon Glass When the console need to be scrolled, this is the number of 19580d89efefSSimon Glass lines to scroll by. It defaults to 1. Increasing this makes 19590d89efefSSimon Glass the console jump but can help speed up operation when scrolling 19600d89efefSSimon Glass is slow. 1961676d319eSSimon Glass 196245d7f525STom Wai-Hong Tam CONFIG_LCD_BMP_RLE8 196345d7f525STom Wai-Hong Tam 196445d7f525STom Wai-Hong Tam Support drawing of RLE8-compressed bitmaps on the LCD. 196545d7f525STom Wai-Hong Tam 1966735987c5STom Wai-Hong Tam CONFIG_I2C_EDID 1967735987c5STom Wai-Hong Tam 1968735987c5STom Wai-Hong Tam Enables an 'i2c edid' command which can read EDID 1969735987c5STom Wai-Hong Tam information over I2C from an attached LCD display. 1970735987c5STom Wai-Hong Tam 19717152b1d0Swdenk- Splash Screen Support: CONFIG_SPLASH_SCREEN 1972d791b1dcSwdenk 1973d791b1dcSwdenk If this option is set, the environment is checked for 1974d791b1dcSwdenk a variable "splashimage". If found, the usual display 1975d791b1dcSwdenk of logo, copyright and system information on the LCD 1976e94d2cd9Swdenk is suppressed and the BMP image at the address 1977d791b1dcSwdenk specified in "splashimage" is loaded instead. The 1978d791b1dcSwdenk console is redirected to the "nulldev", too. This 1979d791b1dcSwdenk allows for a "silent" boot where a splash screen is 1980d791b1dcSwdenk loaded very quickly after power-on. 1981d791b1dcSwdenk 1982c0880485SNikita Kiryanov CONFIG_SPLASHIMAGE_GUARD 1983c0880485SNikita Kiryanov 1984c0880485SNikita Kiryanov If this option is set, then U-Boot will prevent the environment 1985c0880485SNikita Kiryanov variable "splashimage" from being set to a problematic address 19861551df35STom Rini (see README.displaying-bmps). 1987c0880485SNikita Kiryanov This option is useful for targets where, due to alignment 1988c0880485SNikita Kiryanov restrictions, an improperly aligned BMP image will cause a data 1989c0880485SNikita Kiryanov abort. If you think you will not have problems with unaligned 1990c0880485SNikita Kiryanov accesses (for example because your toolchain prevents them) 1991c0880485SNikita Kiryanov there is no need to set this option. 1992c0880485SNikita Kiryanov 19931ca298ceSMatthias Weisser CONFIG_SPLASH_SCREEN_ALIGN 19941ca298ceSMatthias Weisser 19951ca298ceSMatthias Weisser If this option is set the splash image can be freely positioned 19961ca298ceSMatthias Weisser on the screen. Environment variable "splashpos" specifies the 19971ca298ceSMatthias Weisser position as "x,y". If a positive number is given it is used as 19981ca298ceSMatthias Weisser number of pixel from left/top. If a negative number is given it 19991ca298ceSMatthias Weisser is used as number of pixel from right/bottom. You can also 20001ca298ceSMatthias Weisser specify 'm' for centering the image. 20011ca298ceSMatthias Weisser 20021ca298ceSMatthias Weisser Example: 20031ca298ceSMatthias Weisser setenv splashpos m,m 20041ca298ceSMatthias Weisser => image at center of screen 20051ca298ceSMatthias Weisser 20061ca298ceSMatthias Weisser setenv splashpos 30,20 20071ca298ceSMatthias Weisser => image at x = 30 and y = 20 20081ca298ceSMatthias Weisser 20091ca298ceSMatthias Weisser setenv splashpos -10,m 20101ca298ceSMatthias Weisser => vertically centered image 20111ca298ceSMatthias Weisser at x = dspWidth - bmpWidth - 9 20121ca298ceSMatthias Weisser 201398f4a3dfSStefan Roese- Gzip compressed BMP image support: CONFIG_VIDEO_BMP_GZIP 201498f4a3dfSStefan Roese 201598f4a3dfSStefan Roese If this option is set, additionally to standard BMP 201698f4a3dfSStefan Roese images, gzipped BMP images can be displayed via the 201798f4a3dfSStefan Roese splashscreen support or the bmp command. 201898f4a3dfSStefan Roese 2019d5011762SAnatolij Gustschin- Run length encoded BMP image (RLE8) support: CONFIG_VIDEO_BMP_RLE8 2020d5011762SAnatolij Gustschin 2021d5011762SAnatolij Gustschin If this option is set, 8-bit RLE compressed BMP images 2022d5011762SAnatolij Gustschin can be displayed via the splashscreen support or the 2023d5011762SAnatolij Gustschin bmp command. 2024d5011762SAnatolij Gustschin 2025f2b96dfbSLei Wen- Do compresssing for memory range: 2026f2b96dfbSLei Wen CONFIG_CMD_ZIP 2027f2b96dfbSLei Wen 2028f2b96dfbSLei Wen If this option is set, it would use zlib deflate method 2029f2b96dfbSLei Wen to compress the specified memory at its best effort. 2030f2b96dfbSLei Wen 2031c29fdfc1Swdenk- Compression support: 20328ef70478SKees Cook CONFIG_GZIP 20338ef70478SKees Cook 20348ef70478SKees Cook Enabled by default to support gzip compressed images. 20358ef70478SKees Cook 2036c29fdfc1Swdenk CONFIG_BZIP2 2037c29fdfc1Swdenk 2038c29fdfc1Swdenk If this option is set, support for bzip2 compressed 2039c29fdfc1Swdenk images is included. If not, only uncompressed and gzip 2040c29fdfc1Swdenk compressed images are supported. 2041c29fdfc1Swdenk 2042c29fdfc1Swdenk NOTE: the bzip2 algorithm requires a lot of RAM, so 20436d0f6bcfSJean-Christophe PLAGNIOL-VILLARD the malloc area (as defined by CONFIG_SYS_MALLOC_LEN) should 2044c29fdfc1Swdenk be at least 4MB. 2045d791b1dcSwdenk 2046fc9c1727SLuigi 'Comio' Mantellini CONFIG_LZMA 2047fc9c1727SLuigi 'Comio' Mantellini 2048fc9c1727SLuigi 'Comio' Mantellini If this option is set, support for lzma compressed 2049fc9c1727SLuigi 'Comio' Mantellini images is included. 2050fc9c1727SLuigi 'Comio' Mantellini 2051fc9c1727SLuigi 'Comio' Mantellini Note: The LZMA algorithm adds between 2 and 4KB of code and it 2052fc9c1727SLuigi 'Comio' Mantellini requires an amount of dynamic memory that is given by the 2053fc9c1727SLuigi 'Comio' Mantellini formula: 2054fc9c1727SLuigi 'Comio' Mantellini 2055fc9c1727SLuigi 'Comio' Mantellini (1846 + 768 << (lc + lp)) * sizeof(uint16) 2056fc9c1727SLuigi 'Comio' Mantellini 2057fc9c1727SLuigi 'Comio' Mantellini Where lc and lp stand for, respectively, Literal context bits 2058fc9c1727SLuigi 'Comio' Mantellini and Literal pos bits. 2059fc9c1727SLuigi 'Comio' Mantellini 2060fc9c1727SLuigi 'Comio' Mantellini This value is upper-bounded by 14MB in the worst case. Anyway, 2061fc9c1727SLuigi 'Comio' Mantellini for a ~4MB large kernel image, we have lc=3 and lp=0 for a 2062fc9c1727SLuigi 'Comio' Mantellini total amount of (1846 + 768 << (3 + 0)) * 2 = ~41KB... that is 2063fc9c1727SLuigi 'Comio' Mantellini a very small buffer. 2064fc9c1727SLuigi 'Comio' Mantellini 2065fc9c1727SLuigi 'Comio' Mantellini Use the lzmainfo tool to determinate the lc and lp values and 2066fc9c1727SLuigi 'Comio' Mantellini then calculate the amount of needed dynamic memory (ensuring 20676d0f6bcfSJean-Christophe PLAGNIOL-VILLARD the appropriate CONFIG_SYS_MALLOC_LEN value). 2068fc9c1727SLuigi 'Comio' Mantellini 20698ef70478SKees Cook CONFIG_LZO 20708ef70478SKees Cook 20718ef70478SKees Cook If this option is set, support for LZO compressed images 20728ef70478SKees Cook is included. 20738ef70478SKees Cook 207417ea1177Swdenk- MII/PHY support: 207517ea1177Swdenk CONFIG_PHY_ADDR 207617ea1177Swdenk 207717ea1177Swdenk The address of PHY on MII bus. 207817ea1177Swdenk 207917ea1177Swdenk CONFIG_PHY_CLOCK_FREQ (ppc4xx) 208017ea1177Swdenk 208117ea1177Swdenk The clock frequency of the MII bus 208217ea1177Swdenk 208317ea1177Swdenk CONFIG_PHY_GIGE 208417ea1177Swdenk 208517ea1177Swdenk If this option is set, support for speed/duplex 208611ccc33fSMarcel Ziswiler detection of gigabit PHY is included. 208717ea1177Swdenk 208817ea1177Swdenk CONFIG_PHY_RESET_DELAY 208917ea1177Swdenk 209017ea1177Swdenk Some PHY like Intel LXT971A need extra delay after 209117ea1177Swdenk reset before any MII register access is possible. 209217ea1177Swdenk For such PHY, set this option to the usec delay 209317ea1177Swdenk required. (minimum 300usec for LXT971A) 209417ea1177Swdenk 209517ea1177Swdenk CONFIG_PHY_CMD_DELAY (ppc4xx) 209617ea1177Swdenk 209717ea1177Swdenk Some PHY like Intel LXT971A need extra delay after 209817ea1177Swdenk command issued before MII status register can be read 209917ea1177Swdenk 2100c609719bSwdenk- Ethernet address: 2101c609719bSwdenk CONFIG_ETHADDR 2102c68a05feSrichardretanubun CONFIG_ETH1ADDR 2103c609719bSwdenk CONFIG_ETH2ADDR 2104c609719bSwdenk CONFIG_ETH3ADDR 2105c68a05feSrichardretanubun CONFIG_ETH4ADDR 2106c68a05feSrichardretanubun CONFIG_ETH5ADDR 2107c609719bSwdenk 210811ccc33fSMarcel Ziswiler Define a default value for Ethernet address to use 210911ccc33fSMarcel Ziswiler for the respective Ethernet interface, in case this 2110c609719bSwdenk is not determined automatically. 2111c609719bSwdenk 2112c609719bSwdenk- IP address: 2113c609719bSwdenk CONFIG_IPADDR 2114c609719bSwdenk 2115c609719bSwdenk Define a default value for the IP address to use for 211611ccc33fSMarcel Ziswiler the default Ethernet interface, in case this is not 2117c609719bSwdenk determined through e.g. bootp. 21181ebcd654SWolfgang Denk (Environment variable "ipaddr") 2119c609719bSwdenk 2120c609719bSwdenk- Server IP address: 2121c609719bSwdenk CONFIG_SERVERIP 2122c609719bSwdenk 2123c609719bSwdenk Defines a default value for the IP address of a TFTP 2124c609719bSwdenk server to contact when using the "tftboot" command. 21251ebcd654SWolfgang Denk (Environment variable "serverip") 2126c609719bSwdenk 212797cfe861SRobin Getz CONFIG_KEEP_SERVERADDR 212897cfe861SRobin Getz 212997cfe861SRobin Getz Keeps the server's MAC address, in the env 'serveraddr' 213097cfe861SRobin Getz for passing to bootargs (like Linux's netconsole option) 213197cfe861SRobin Getz 21321ebcd654SWolfgang Denk- Gateway IP address: 21331ebcd654SWolfgang Denk CONFIG_GATEWAYIP 21341ebcd654SWolfgang Denk 21351ebcd654SWolfgang Denk Defines a default value for the IP address of the 21361ebcd654SWolfgang Denk default router where packets to other networks are 21371ebcd654SWolfgang Denk sent to. 21381ebcd654SWolfgang Denk (Environment variable "gatewayip") 21391ebcd654SWolfgang Denk 21401ebcd654SWolfgang Denk- Subnet mask: 21411ebcd654SWolfgang Denk CONFIG_NETMASK 21421ebcd654SWolfgang Denk 21431ebcd654SWolfgang Denk Defines a default value for the subnet mask (or 21441ebcd654SWolfgang Denk routing prefix) which is used to determine if an IP 21451ebcd654SWolfgang Denk address belongs to the local subnet or needs to be 21461ebcd654SWolfgang Denk forwarded through a router. 21471ebcd654SWolfgang Denk (Environment variable "netmask") 21481ebcd654SWolfgang Denk 214953a5c424SDavid Updegraff- Multicast TFTP Mode: 215053a5c424SDavid Updegraff CONFIG_MCAST_TFTP 215153a5c424SDavid Updegraff 215253a5c424SDavid Updegraff Defines whether you want to support multicast TFTP as per 215353a5c424SDavid Updegraff rfc-2090; for example to work with atftp. Lets lots of targets 215411ccc33fSMarcel Ziswiler tftp down the same boot image concurrently. Note: the Ethernet 215553a5c424SDavid Updegraff driver in use must provide a function: mcast() to join/leave a 215653a5c424SDavid Updegraff multicast group. 215753a5c424SDavid Updegraff 2158c609719bSwdenk- BOOTP Recovery Mode: 2159c609719bSwdenk CONFIG_BOOTP_RANDOM_DELAY 2160c609719bSwdenk 2161c609719bSwdenk If you have many targets in a network that try to 2162c609719bSwdenk boot using BOOTP, you may want to avoid that all 2163c609719bSwdenk systems send out BOOTP requests at precisely the same 2164c609719bSwdenk moment (which would happen for instance at recovery 2165c609719bSwdenk from a power failure, when all systems will try to 2166c609719bSwdenk boot, thus flooding the BOOTP server. Defining 2167c609719bSwdenk CONFIG_BOOTP_RANDOM_DELAY causes a random delay to be 2168c609719bSwdenk inserted before sending out BOOTP requests. The 21696c33c785SWolfgang Denk following delays are inserted then: 2170c609719bSwdenk 2171c609719bSwdenk 1st BOOTP request: delay 0 ... 1 sec 2172c609719bSwdenk 2nd BOOTP request: delay 0 ... 2 sec 2173c609719bSwdenk 3rd BOOTP request: delay 0 ... 4 sec 2174c609719bSwdenk 4th and following 2175c609719bSwdenk BOOTP requests: delay 0 ... 8 sec 2176c609719bSwdenk 217792ac8accSThierry Reding CONFIG_BOOTP_ID_CACHE_SIZE 217892ac8accSThierry Reding 217992ac8accSThierry Reding BOOTP packets are uniquely identified using a 32-bit ID. The 218092ac8accSThierry Reding server will copy the ID from client requests to responses and 218192ac8accSThierry Reding U-Boot will use this to determine if it is the destination of 218292ac8accSThierry Reding an incoming response. Some servers will check that addresses 218392ac8accSThierry Reding aren't in use before handing them out (usually using an ARP 218492ac8accSThierry Reding ping) and therefore take up to a few hundred milliseconds to 218592ac8accSThierry Reding respond. Network congestion may also influence the time it 218692ac8accSThierry Reding takes for a response to make it back to the client. If that 218792ac8accSThierry Reding time is too long, U-Boot will retransmit requests. In order 218892ac8accSThierry Reding to allow earlier responses to still be accepted after these 218992ac8accSThierry Reding retransmissions, U-Boot's BOOTP client keeps a small cache of 219092ac8accSThierry Reding IDs. The CONFIG_BOOTP_ID_CACHE_SIZE controls the size of this 219192ac8accSThierry Reding cache. The default is to keep IDs for up to four outstanding 219292ac8accSThierry Reding requests. Increasing this will allow U-Boot to accept offers 219392ac8accSThierry Reding from a BOOTP client in networks with unusually high latency. 219492ac8accSThierry Reding 2195fe389a82Sstroese- DHCP Advanced Options: 21961fe80d79SJon Loeliger You can fine tune the DHCP functionality by defining 21971fe80d79SJon Loeliger CONFIG_BOOTP_* symbols: 2198fe389a82Sstroese 21991fe80d79SJon Loeliger CONFIG_BOOTP_SUBNETMASK 22001fe80d79SJon Loeliger CONFIG_BOOTP_GATEWAY 22011fe80d79SJon Loeliger CONFIG_BOOTP_HOSTNAME 22021fe80d79SJon Loeliger CONFIG_BOOTP_NISDOMAIN 22031fe80d79SJon Loeliger CONFIG_BOOTP_BOOTPATH 22041fe80d79SJon Loeliger CONFIG_BOOTP_BOOTFILESIZE 22051fe80d79SJon Loeliger CONFIG_BOOTP_DNS 22061fe80d79SJon Loeliger CONFIG_BOOTP_DNS2 22071fe80d79SJon Loeliger CONFIG_BOOTP_SEND_HOSTNAME 22081fe80d79SJon Loeliger CONFIG_BOOTP_NTPSERVER 22091fe80d79SJon Loeliger CONFIG_BOOTP_TIMEOFFSET 22101fe80d79SJon Loeliger CONFIG_BOOTP_VENDOREX 22112c00e099SJoe Hershberger CONFIG_BOOTP_MAY_FAIL 2212fe389a82Sstroese 22135d110f0aSWilson Callan CONFIG_BOOTP_SERVERIP - TFTP server will be the serverip 22145d110f0aSWilson Callan environment variable, not the BOOTP server. 2215fe389a82Sstroese 22162c00e099SJoe Hershberger CONFIG_BOOTP_MAY_FAIL - If the DHCP server is not found 22172c00e099SJoe Hershberger after the configured retry count, the call will fail 22182c00e099SJoe Hershberger instead of starting over. This can be used to fail over 22192c00e099SJoe Hershberger to Link-local IP address configuration if the DHCP server 22202c00e099SJoe Hershberger is not available. 22212c00e099SJoe Hershberger 2222fe389a82Sstroese CONFIG_BOOTP_DNS2 - If a DHCP client requests the DNS 2223fe389a82Sstroese serverip from a DHCP server, it is possible that more 2224fe389a82Sstroese than one DNS serverip is offered to the client. 2225fe389a82Sstroese If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS 2226fe389a82Sstroese serverip will be stored in the additional environment 2227fe389a82Sstroese variable "dnsip2". The first DNS serverip is always 2228fe389a82Sstroese stored in the variable "dnsip", when CONFIG_BOOTP_DNS 22291fe80d79SJon Loeliger is defined. 2230fe389a82Sstroese 2231fe389a82Sstroese CONFIG_BOOTP_SEND_HOSTNAME - Some DHCP servers are capable 2232fe389a82Sstroese to do a dynamic update of a DNS server. To do this, they 2233fe389a82Sstroese need the hostname of the DHCP requester. 22345d110f0aSWilson Callan If CONFIG_BOOTP_SEND_HOSTNAME is defined, the content 22351fe80d79SJon Loeliger of the "hostname" environment variable is passed as 22361fe80d79SJon Loeliger option 12 to the DHCP server. 2237fe389a82Sstroese 2238d9a2f416SAras Vaichas CONFIG_BOOTP_DHCP_REQUEST_DELAY 2239d9a2f416SAras Vaichas 2240d9a2f416SAras Vaichas A 32bit value in microseconds for a delay between 2241d9a2f416SAras Vaichas receiving a "DHCP Offer" and sending the "DHCP Request". 2242d9a2f416SAras Vaichas This fixes a problem with certain DHCP servers that don't 2243d9a2f416SAras Vaichas respond 100% of the time to a "DHCP request". E.g. On an 2244d9a2f416SAras Vaichas AT91RM9200 processor running at 180MHz, this delay needed 2245d9a2f416SAras Vaichas to be *at least* 15,000 usec before a Windows Server 2003 2246d9a2f416SAras Vaichas DHCP server would reply 100% of the time. I recommend at 2247d9a2f416SAras Vaichas least 50,000 usec to be safe. The alternative is to hope 2248d9a2f416SAras Vaichas that one of the retries will be successful but note that 2249d9a2f416SAras Vaichas the DHCP timeout and retry process takes a longer than 2250d9a2f416SAras Vaichas this delay. 2251d9a2f416SAras Vaichas 2252d22c338eSJoe Hershberger - Link-local IP address negotiation: 2253d22c338eSJoe Hershberger Negotiate with other link-local clients on the local network 2254d22c338eSJoe Hershberger for an address that doesn't require explicit configuration. 2255d22c338eSJoe Hershberger This is especially useful if a DHCP server cannot be guaranteed 2256d22c338eSJoe Hershberger to exist in all environments that the device must operate. 2257d22c338eSJoe Hershberger 2258d22c338eSJoe Hershberger See doc/README.link-local for more information. 2259d22c338eSJoe Hershberger 2260a3d991bdSwdenk - CDP Options: 2261a3d991bdSwdenk CONFIG_CDP_DEVICE_ID 2262a3d991bdSwdenk 2263a3d991bdSwdenk The device id used in CDP trigger frames. 2264a3d991bdSwdenk 2265a3d991bdSwdenk CONFIG_CDP_DEVICE_ID_PREFIX 2266a3d991bdSwdenk 2267a3d991bdSwdenk A two character string which is prefixed to the MAC address 2268a3d991bdSwdenk of the device. 2269a3d991bdSwdenk 2270a3d991bdSwdenk CONFIG_CDP_PORT_ID 2271a3d991bdSwdenk 2272a3d991bdSwdenk A printf format string which contains the ascii name of 2273a3d991bdSwdenk the port. Normally is set to "eth%d" which sets 227411ccc33fSMarcel Ziswiler eth0 for the first Ethernet, eth1 for the second etc. 2275a3d991bdSwdenk 2276a3d991bdSwdenk CONFIG_CDP_CAPABILITIES 2277a3d991bdSwdenk 2278a3d991bdSwdenk A 32bit integer which indicates the device capabilities; 2279a3d991bdSwdenk 0x00000010 for a normal host which does not forwards. 2280a3d991bdSwdenk 2281a3d991bdSwdenk CONFIG_CDP_VERSION 2282a3d991bdSwdenk 2283a3d991bdSwdenk An ascii string containing the version of the software. 2284a3d991bdSwdenk 2285a3d991bdSwdenk CONFIG_CDP_PLATFORM 2286a3d991bdSwdenk 2287a3d991bdSwdenk An ascii string containing the name of the platform. 2288a3d991bdSwdenk 2289a3d991bdSwdenk CONFIG_CDP_TRIGGER 2290a3d991bdSwdenk 2291a3d991bdSwdenk A 32bit integer sent on the trigger. 2292a3d991bdSwdenk 2293a3d991bdSwdenk CONFIG_CDP_POWER_CONSUMPTION 2294a3d991bdSwdenk 2295a3d991bdSwdenk A 16bit integer containing the power consumption of the 2296a3d991bdSwdenk device in .1 of milliwatts. 2297a3d991bdSwdenk 2298a3d991bdSwdenk CONFIG_CDP_APPLIANCE_VLAN_TYPE 2299a3d991bdSwdenk 2300a3d991bdSwdenk A byte containing the id of the VLAN. 2301a3d991bdSwdenk 2302c609719bSwdenk- Status LED: CONFIG_STATUS_LED 2303c609719bSwdenk 2304c609719bSwdenk Several configurations allow to display the current 2305c609719bSwdenk status using a LED. For instance, the LED will blink 2306c609719bSwdenk fast while running U-Boot code, stop blinking as 2307c609719bSwdenk soon as a reply to a BOOTP request was received, and 2308c609719bSwdenk start blinking slow once the Linux kernel is running 2309c609719bSwdenk (supported by a status LED driver in the Linux 2310c609719bSwdenk kernel). Defining CONFIG_STATUS_LED enables this 2311c609719bSwdenk feature in U-Boot. 2312c609719bSwdenk 23131df7bbbaSIgor Grinberg Additional options: 23141df7bbbaSIgor Grinberg 23151df7bbbaSIgor Grinberg CONFIG_GPIO_LED 23161df7bbbaSIgor Grinberg The status LED can be connected to a GPIO pin. 23171df7bbbaSIgor Grinberg In such cases, the gpio_led driver can be used as a 23181df7bbbaSIgor Grinberg status LED backend implementation. Define CONFIG_GPIO_LED 23191df7bbbaSIgor Grinberg to include the gpio_led driver in the U-Boot binary. 23201df7bbbaSIgor Grinberg 23219dfdcdfeSIgor Grinberg CONFIG_GPIO_LED_INVERTED_TABLE 23229dfdcdfeSIgor Grinberg Some GPIO connected LEDs may have inverted polarity in which 23239dfdcdfeSIgor Grinberg case the GPIO high value corresponds to LED off state and 23249dfdcdfeSIgor Grinberg GPIO low value corresponds to LED on state. 23259dfdcdfeSIgor Grinberg In such cases CONFIG_GPIO_LED_INVERTED_TABLE may be defined 23269dfdcdfeSIgor Grinberg with a list of GPIO LEDs that have inverted polarity. 23279dfdcdfeSIgor Grinberg 2328c609719bSwdenk- CAN Support: CONFIG_CAN_DRIVER 2329c609719bSwdenk 2330c609719bSwdenk Defining CONFIG_CAN_DRIVER enables CAN driver support 2331c609719bSwdenk on those systems that support this (optional) 2332c609719bSwdenk feature, like the TQM8xxL modules. 2333c609719bSwdenk 23343f4978c7SHeiko Schocher- I2C Support: CONFIG_SYS_I2C 2335c609719bSwdenk 23363f4978c7SHeiko Schocher This enable the NEW i2c subsystem, and will allow you to use 23373f4978c7SHeiko Schocher i2c commands at the u-boot command line (as long as you set 23383f4978c7SHeiko Schocher CONFIG_CMD_I2C in CONFIG_COMMANDS) and communicate with i2c 23393f4978c7SHeiko Schocher based realtime clock chips or other i2c devices. See 23403f4978c7SHeiko Schocher common/cmd_i2c.c for a description of the command line 23413f4978c7SHeiko Schocher interface. 23423f4978c7SHeiko Schocher 23433f4978c7SHeiko Schocher ported i2c driver to the new framework: 2344ea818dbbSHeiko Schocher - drivers/i2c/soft_i2c.c: 2345ea818dbbSHeiko Schocher - activate first bus with CONFIG_SYS_I2C_SOFT define 2346ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED and CONFIG_SYS_I2C_SOFT_SLAVE 2347ea818dbbSHeiko Schocher for defining speed and slave address 2348ea818dbbSHeiko Schocher - activate second bus with I2C_SOFT_DECLARATIONS2 define 2349ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_2 and CONFIG_SYS_I2C_SOFT_SLAVE_2 2350ea818dbbSHeiko Schocher for defining speed and slave address 2351ea818dbbSHeiko Schocher - activate third bus with I2C_SOFT_DECLARATIONS3 define 2352ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_3 and CONFIG_SYS_I2C_SOFT_SLAVE_3 2353ea818dbbSHeiko Schocher for defining speed and slave address 2354ea818dbbSHeiko Schocher - activate fourth bus with I2C_SOFT_DECLARATIONS4 define 2355ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_4 and CONFIG_SYS_I2C_SOFT_SLAVE_4 2356ea818dbbSHeiko Schocher for defining speed and slave address 23573f4978c7SHeiko Schocher 235800f792e0SHeiko Schocher - drivers/i2c/fsl_i2c.c: 235900f792e0SHeiko Schocher - activate i2c driver with CONFIG_SYS_I2C_FSL 236000f792e0SHeiko Schocher define CONFIG_SYS_FSL_I2C_OFFSET for setting the register 236100f792e0SHeiko Schocher offset CONFIG_SYS_FSL_I2C_SPEED for the i2c speed and 236200f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C_SLAVE for the slave addr of the first 236300f792e0SHeiko Schocher bus. 236400f792e0SHeiko Schocher - If your board supports a second fsl i2c bus, define 236500f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_OFFSET for the register offset 236600f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_SPEED for the speed and 236700f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_SLAVE for the slave address of the 236800f792e0SHeiko Schocher second bus. 236900f792e0SHeiko Schocher 23701f2ba722SSimon Glass - drivers/i2c/tegra_i2c.c: 23711f2ba722SSimon Glass - activate this driver with CONFIG_SYS_I2C_TEGRA 23721f2ba722SSimon Glass - This driver adds 4 i2c buses with a fix speed from 23731f2ba722SSimon Glass 100000 and the slave addr 0! 23741f2ba722SSimon Glass 2375880540deSDirk Eibach - drivers/i2c/ppc4xx_i2c.c 2376880540deSDirk Eibach - activate this driver with CONFIG_SYS_I2C_PPC4XX 2377880540deSDirk Eibach - CONFIG_SYS_I2C_PPC4XX_CH0 activate hardware channel 0 2378880540deSDirk Eibach - CONFIG_SYS_I2C_PPC4XX_CH1 activate hardware channel 1 2379880540deSDirk Eibach 2380fac96408Strem - drivers/i2c/i2c_mxc.c 2381fac96408Strem - activate this driver with CONFIG_SYS_I2C_MXC 2382fac96408Strem - define speed for bus 1 with CONFIG_SYS_MXC_I2C1_SPEED 2383fac96408Strem - define slave for bus 1 with CONFIG_SYS_MXC_I2C1_SLAVE 2384fac96408Strem - define speed for bus 2 with CONFIG_SYS_MXC_I2C2_SPEED 2385fac96408Strem - define slave for bus 2 with CONFIG_SYS_MXC_I2C2_SLAVE 2386fac96408Strem - define speed for bus 3 with CONFIG_SYS_MXC_I2C3_SPEED 2387fac96408Strem - define slave for bus 3 with CONFIG_SYS_MXC_I2C3_SLAVE 2388fac96408Strem If thoses defines are not set, default value is 100000 2389fac96408Strem for speed, and 0 for slave. 2390fac96408Strem 23911086bfa9SNobuhiro Iwamatsu - drivers/i2c/rcar_i2c.c: 23921086bfa9SNobuhiro Iwamatsu - activate this driver with CONFIG_SYS_I2C_RCAR 23931086bfa9SNobuhiro Iwamatsu - This driver adds 4 i2c buses 23941086bfa9SNobuhiro Iwamatsu 23951086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C0_BASE for setting the register channel 0 23961086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C0_SPEED for for the speed channel 0 23971086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C1_BASE for setting the register channel 1 23981086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C1_SPEED for for the speed channel 1 23991086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C2_BASE for setting the register channel 2 24001086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C2_SPEED for for the speed channel 2 24011086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C3_BASE for setting the register channel 3 24021086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C3_SPEED for for the speed channel 3 24031086bfa9SNobuhiro Iwamatsu - CONFIF_SYS_RCAR_I2C_NUM_CONTROLLERS for number of i2c buses 24041086bfa9SNobuhiro Iwamatsu 24052035d77dSNobuhiro Iwamatsu - drivers/i2c/sh_i2c.c: 24062035d77dSNobuhiro Iwamatsu - activate this driver with CONFIG_SYS_I2C_SH 24072035d77dSNobuhiro Iwamatsu - This driver adds from 2 to 5 i2c buses 24082035d77dSNobuhiro Iwamatsu 24092035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE0 for setting the register channel 0 24102035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED0 for for the speed channel 0 24112035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE1 for setting the register channel 1 24122035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED1 for for the speed channel 1 24132035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE2 for setting the register channel 2 24142035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED2 for for the speed channel 2 24152035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE3 for setting the register channel 3 24162035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED3 for for the speed channel 3 24172035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE4 for setting the register channel 4 24182035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED4 for for the speed channel 4 24192035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE5 for setting the register channel 5 24202035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED5 for for the speed channel 5 24212035d77dSNobuhiro Iwamatsu - CONFIF_SYS_I2C_SH_NUM_CONTROLLERS for nummber of i2c buses 24222035d77dSNobuhiro Iwamatsu 24236789e84eSHeiko Schocher - drivers/i2c/omap24xx_i2c.c 24246789e84eSHeiko Schocher - activate this driver with CONFIG_SYS_I2C_OMAP24XX 24256789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED speed channel 0 24266789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE slave addr channel 0 24276789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED1 speed channel 1 24286789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE1 slave addr channel 1 24296789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED2 speed channel 2 24306789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE2 slave addr channel 2 24316789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED3 speed channel 3 24326789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE3 slave addr channel 3 24336789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED4 speed channel 4 24346789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE4 slave addr channel 4 24356789e84eSHeiko Schocher 24360bdffe71SHeiko Schocher - drivers/i2c/zynq_i2c.c 24370bdffe71SHeiko Schocher - activate this driver with CONFIG_SYS_I2C_ZYNQ 24380bdffe71SHeiko Schocher - set CONFIG_SYS_I2C_ZYNQ_SPEED for speed setting 24390bdffe71SHeiko Schocher - set CONFIG_SYS_I2C_ZYNQ_SLAVE for slave addr 24400bdffe71SHeiko Schocher 2441e717fc6dSNaveen Krishna Ch - drivers/i2c/s3c24x0_i2c.c: 2442e717fc6dSNaveen Krishna Ch - activate this driver with CONFIG_SYS_I2C_S3C24X0 2443e717fc6dSNaveen Krishna Ch - This driver adds i2c buses (11 for Exynos5250, Exynos5420 2444e717fc6dSNaveen Krishna Ch 9 i2c buses for Exynos4 and 1 for S3C24X0 SoCs from Samsung) 2445e717fc6dSNaveen Krishna Ch with a fix speed from 100000 and the slave addr 0! 2446e717fc6dSNaveen Krishna Ch 2447b46226bdSDirk Eibach - drivers/i2c/ihs_i2c.c 2448b46226bdSDirk Eibach - activate this driver with CONFIG_SYS_I2C_IHS 2449b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_CH0 activate hardware channel 0 2450b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_SPEED_0 speed channel 0 2451b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_SLAVE_0 slave addr channel 0 2452b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_CH1 activate hardware channel 1 2453b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_SPEED_1 speed channel 1 2454b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_SLAVE_1 slave addr channel 1 2455b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_CH2 activate hardware channel 2 2456b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_SPEED_2 speed channel 2 2457b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_SLAVE_2 slave addr channel 2 2458b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_CH3 activate hardware channel 3 2459b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_SPEED_3 speed channel 3 2460b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_SLAVE_3 slave addr channel 3 2461b46226bdSDirk Eibach 24623f4978c7SHeiko Schocher additional defines: 24633f4978c7SHeiko Schocher 24643f4978c7SHeiko Schocher CONFIG_SYS_NUM_I2C_BUSES 24653f4978c7SHeiko Schocher Hold the number of i2c busses you want to use. If you 24663f4978c7SHeiko Schocher don't use/have i2c muxes on your i2c bus, this 24673f4978c7SHeiko Schocher is equal to CONFIG_SYS_NUM_I2C_ADAPTERS, and you can 24683f4978c7SHeiko Schocher omit this define. 24693f4978c7SHeiko Schocher 24703f4978c7SHeiko Schocher CONFIG_SYS_I2C_DIRECT_BUS 24713f4978c7SHeiko Schocher define this, if you don't use i2c muxes on your hardware. 24723f4978c7SHeiko Schocher if CONFIG_SYS_I2C_MAX_HOPS is not defined or == 0 you can 24733f4978c7SHeiko Schocher omit this define. 24743f4978c7SHeiko Schocher 24753f4978c7SHeiko Schocher CONFIG_SYS_I2C_MAX_HOPS 24763f4978c7SHeiko Schocher define how many muxes are maximal consecutively connected 24773f4978c7SHeiko Schocher on one i2c bus. If you not use i2c muxes, omit this 24783f4978c7SHeiko Schocher define. 24793f4978c7SHeiko Schocher 24803f4978c7SHeiko Schocher CONFIG_SYS_I2C_BUSES 24813f4978c7SHeiko Schocher hold a list of busses you want to use, only used if 24823f4978c7SHeiko Schocher CONFIG_SYS_I2C_DIRECT_BUS is not defined, for example 24833f4978c7SHeiko Schocher a board with CONFIG_SYS_I2C_MAX_HOPS = 1 and 24843f4978c7SHeiko Schocher CONFIG_SYS_NUM_I2C_BUSES = 9: 24853f4978c7SHeiko Schocher 24863f4978c7SHeiko Schocher CONFIG_SYS_I2C_BUSES {{0, {I2C_NULL_HOP}}, \ 24873f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 1}}}, \ 24883f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 2}}}, \ 24893f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 3}}}, \ 24903f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 4}}}, \ 24913f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 5}}}, \ 24923f4978c7SHeiko Schocher {1, {I2C_NULL_HOP}}, \ 24933f4978c7SHeiko Schocher {1, {{I2C_MUX_PCA9544, 0x72, 1}}}, \ 24943f4978c7SHeiko Schocher {1, {{I2C_MUX_PCA9544, 0x72, 2}}}, \ 24953f4978c7SHeiko Schocher } 24963f4978c7SHeiko Schocher 24973f4978c7SHeiko Schocher which defines 24983f4978c7SHeiko Schocher bus 0 on adapter 0 without a mux 2499ea818dbbSHeiko Schocher bus 1 on adapter 0 with a PCA9547 on address 0x70 port 1 2500ea818dbbSHeiko Schocher bus 2 on adapter 0 with a PCA9547 on address 0x70 port 2 2501ea818dbbSHeiko Schocher bus 3 on adapter 0 with a PCA9547 on address 0x70 port 3 2502ea818dbbSHeiko Schocher bus 4 on adapter 0 with a PCA9547 on address 0x70 port 4 2503ea818dbbSHeiko Schocher bus 5 on adapter 0 with a PCA9547 on address 0x70 port 5 25043f4978c7SHeiko Schocher bus 6 on adapter 1 without a mux 2505ea818dbbSHeiko Schocher bus 7 on adapter 1 with a PCA9544 on address 0x72 port 1 2506ea818dbbSHeiko Schocher bus 8 on adapter 1 with a PCA9544 on address 0x72 port 2 25073f4978c7SHeiko Schocher 25083f4978c7SHeiko Schocher If you do not have i2c muxes on your board, omit this define. 25093f4978c7SHeiko Schocher 2510ea818dbbSHeiko Schocher- Legacy I2C Support: CONFIG_HARD_I2C 25113f4978c7SHeiko Schocher 25123f4978c7SHeiko Schocher NOTE: It is intended to move drivers to CONFIG_SYS_I2C which 25133f4978c7SHeiko Schocher provides the following compelling advantages: 25143f4978c7SHeiko Schocher 25153f4978c7SHeiko Schocher - more than one i2c adapter is usable 25163f4978c7SHeiko Schocher - approved multibus support 25173f4978c7SHeiko Schocher - better i2c mux support 25183f4978c7SHeiko Schocher 25193f4978c7SHeiko Schocher ** Please consider updating your I2C driver now. ** 25203f4978c7SHeiko Schocher 2521ea818dbbSHeiko Schocher These enable legacy I2C serial bus commands. Defining 2522ea818dbbSHeiko Schocher CONFIG_HARD_I2C will include the appropriate I2C driver 2523ea818dbbSHeiko Schocher for the selected CPU. 2524c609719bSwdenk 2525b37c7e5eSwdenk This will allow you to use i2c commands at the u-boot 2526602ad3b3SJon Loeliger command line (as long as you set CONFIG_CMD_I2C in 2527b37c7e5eSwdenk CONFIG_COMMANDS) and communicate with i2c based realtime 2528b37c7e5eSwdenk clock chips. See common/cmd_i2c.c for a description of the 2529c609719bSwdenk command line interface. 2530c609719bSwdenk 2531bb99ad6dSBen Warren CONFIG_HARD_I2C selects a hardware I2C controller. 2532c609719bSwdenk 2533b37c7e5eSwdenk There are several other quantities that must also be 2534ea818dbbSHeiko Schocher defined when you define CONFIG_HARD_I2C. 2535c609719bSwdenk 25366d0f6bcfSJean-Christophe PLAGNIOL-VILLARD In both cases you will need to define CONFIG_SYS_I2C_SPEED 2537b37c7e5eSwdenk to be the frequency (in Hz) at which you wish your i2c bus 25386d0f6bcfSJean-Christophe PLAGNIOL-VILLARD to run and CONFIG_SYS_I2C_SLAVE to be the address of this node (ie 253911ccc33fSMarcel Ziswiler the CPU's i2c node address). 2540c609719bSwdenk 25418d321b81SPeter Tyser Now, the u-boot i2c code for the mpc8xx 2542a47a12beSStefan Roese (arch/powerpc/cpu/mpc8xx/i2c.c) sets the CPU up as a master node 25438d321b81SPeter Tyser and so its address should therefore be cleared to 0 (See, 25448d321b81SPeter Tyser eg, MPC823e User's Manual p.16-473). So, set 25458d321b81SPeter Tyser CONFIG_SYS_I2C_SLAVE to 0. 2546b37c7e5eSwdenk 25475da71efaSEric Millbrandt CONFIG_SYS_I2C_INIT_MPC5XXX 25485da71efaSEric Millbrandt 25495da71efaSEric Millbrandt When a board is reset during an i2c bus transfer 25505da71efaSEric Millbrandt chips might think that the current transfer is still 25515da71efaSEric Millbrandt in progress. Reset the slave devices by sending start 25525da71efaSEric Millbrandt commands until the slave device responds. 25535da71efaSEric Millbrandt 2554b37c7e5eSwdenk That's all that's required for CONFIG_HARD_I2C. 2555b37c7e5eSwdenk 2556ea818dbbSHeiko Schocher If you use the software i2c interface (CONFIG_SYS_I2C_SOFT) 2557b37c7e5eSwdenk then the following macros need to be defined (examples are 2558b37c7e5eSwdenk from include/configs/lwmon.h): 2559c609719bSwdenk 2560c609719bSwdenk I2C_INIT 2561c609719bSwdenk 2562b37c7e5eSwdenk (Optional). Any commands necessary to enable the I2C 2563c609719bSwdenk controller or configure ports. 2564c609719bSwdenk 2565b37c7e5eSwdenk eg: #define I2C_INIT (immr->im_cpm.cp_pbdir |= PB_SCL) 2566b37c7e5eSwdenk 2567c609719bSwdenk I2C_PORT 2568c609719bSwdenk 2569c609719bSwdenk (Only for MPC8260 CPU). The I/O port to use (the code 2570c609719bSwdenk assumes both bits are on the same port). Valid values 2571c609719bSwdenk are 0..3 for ports A..D. 2572c609719bSwdenk 2573c609719bSwdenk I2C_ACTIVE 2574c609719bSwdenk 2575c609719bSwdenk The code necessary to make the I2C data line active 2576c609719bSwdenk (driven). If the data line is open collector, this 2577c609719bSwdenk define can be null. 2578c609719bSwdenk 2579b37c7e5eSwdenk eg: #define I2C_ACTIVE (immr->im_cpm.cp_pbdir |= PB_SDA) 2580b37c7e5eSwdenk 2581c609719bSwdenk I2C_TRISTATE 2582c609719bSwdenk 2583c609719bSwdenk The code necessary to make the I2C data line tri-stated 2584c609719bSwdenk (inactive). If the data line is open collector, this 2585c609719bSwdenk define can be null. 2586c609719bSwdenk 2587b37c7e5eSwdenk eg: #define I2C_TRISTATE (immr->im_cpm.cp_pbdir &= ~PB_SDA) 2588b37c7e5eSwdenk 2589c609719bSwdenk I2C_READ 2590c609719bSwdenk 2591472d5460SYork Sun Code that returns true if the I2C data line is high, 2592472d5460SYork Sun false if it is low. 2593c609719bSwdenk 2594b37c7e5eSwdenk eg: #define I2C_READ ((immr->im_cpm.cp_pbdat & PB_SDA) != 0) 2595b37c7e5eSwdenk 2596c609719bSwdenk I2C_SDA(bit) 2597c609719bSwdenk 2598472d5460SYork Sun If <bit> is true, sets the I2C data line high. If it 2599472d5460SYork Sun is false, it clears it (low). 2600c609719bSwdenk 2601b37c7e5eSwdenk eg: #define I2C_SDA(bit) \ 2602b37c7e5eSwdenk if(bit) immr->im_cpm.cp_pbdat |= PB_SDA; \ 2603b37c7e5eSwdenk else immr->im_cpm.cp_pbdat &= ~PB_SDA 2604b37c7e5eSwdenk 2605c609719bSwdenk I2C_SCL(bit) 2606c609719bSwdenk 2607472d5460SYork Sun If <bit> is true, sets the I2C clock line high. If it 2608472d5460SYork Sun is false, it clears it (low). 2609c609719bSwdenk 2610b37c7e5eSwdenk eg: #define I2C_SCL(bit) \ 2611b37c7e5eSwdenk if(bit) immr->im_cpm.cp_pbdat |= PB_SCL; \ 2612b37c7e5eSwdenk else immr->im_cpm.cp_pbdat &= ~PB_SCL 2613b37c7e5eSwdenk 2614c609719bSwdenk I2C_DELAY 2615c609719bSwdenk 2616c609719bSwdenk This delay is invoked four times per clock cycle so this 2617c609719bSwdenk controls the rate of data transfer. The data rate thus 2618b37c7e5eSwdenk is 1 / (I2C_DELAY * 4). Often defined to be something 2619b37c7e5eSwdenk like: 2620b37c7e5eSwdenk 2621b37c7e5eSwdenk #define I2C_DELAY udelay(2) 2622c609719bSwdenk 2623793b5726SMike Frysinger CONFIG_SOFT_I2C_GPIO_SCL / CONFIG_SOFT_I2C_GPIO_SDA 2624793b5726SMike Frysinger 2625793b5726SMike Frysinger If your arch supports the generic GPIO framework (asm/gpio.h), 2626793b5726SMike Frysinger then you may alternatively define the two GPIOs that are to be 2627793b5726SMike Frysinger used as SCL / SDA. Any of the previous I2C_xxx macros will 2628793b5726SMike Frysinger have GPIO-based defaults assigned to them as appropriate. 2629793b5726SMike Frysinger 2630793b5726SMike Frysinger You should define these to the GPIO value as given directly to 2631793b5726SMike Frysinger the generic GPIO functions. 2632793b5726SMike Frysinger 26336d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_INIT_BOARD 263447cd00faSwdenk 263547cd00faSwdenk When a board is reset during an i2c bus transfer 263647cd00faSwdenk chips might think that the current transfer is still 263747cd00faSwdenk in progress. On some boards it is possible to access 263847cd00faSwdenk the i2c SCLK line directly, either by using the 263947cd00faSwdenk processor pin as a GPIO or by having a second pin 264047cd00faSwdenk connected to the bus. If this option is defined a 264147cd00faSwdenk custom i2c_init_board() routine in boards/xxx/board.c 264247cd00faSwdenk is run early in the boot sequence. 264347cd00faSwdenk 264426a33504SRichard Retanubun CONFIG_SYS_I2C_BOARD_LATE_INIT 264526a33504SRichard Retanubun 264626a33504SRichard Retanubun An alternative to CONFIG_SYS_I2C_INIT_BOARD. If this option is 264726a33504SRichard Retanubun defined a custom i2c_board_late_init() routine in 264826a33504SRichard Retanubun boards/xxx/board.c is run AFTER the operations in i2c_init() 264926a33504SRichard Retanubun is completed. This callpoint can be used to unreset i2c bus 265026a33504SRichard Retanubun using CPU i2c controller register accesses for CPUs whose i2c 265126a33504SRichard Retanubun controller provide such a method. It is called at the end of 265226a33504SRichard Retanubun i2c_init() to allow i2c_init operations to setup the i2c bus 265326a33504SRichard Retanubun controller on the CPU (e.g. setting bus speed & slave address). 265426a33504SRichard Retanubun 265517ea1177Swdenk CONFIG_I2CFAST (PPC405GP|PPC405EP only) 265617ea1177Swdenk 265717ea1177Swdenk This option enables configuration of bi_iic_fast[] flags 265817ea1177Swdenk in u-boot bd_info structure based on u-boot environment 265917ea1177Swdenk variable "i2cfast". (see also i2cfast) 266017ea1177Swdenk 2661bb99ad6dSBen Warren CONFIG_I2C_MULTI_BUS 2662bb99ad6dSBen Warren 2663bb99ad6dSBen Warren This option allows the use of multiple I2C buses, each of which 2664bb99ad6dSBen Warren must have a controller. At any point in time, only one bus is 2665bb99ad6dSBen Warren active. To switch to a different bus, use the 'i2c dev' command. 2666bb99ad6dSBen Warren Note that bus numbering is zero-based. 2667bb99ad6dSBen Warren 26686d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_NOPROBES 2669bb99ad6dSBen Warren 2670bb99ad6dSBen Warren This option specifies a list of I2C devices that will be skipped 26710f89c54bSPeter Tyser when the 'i2c probe' command is issued. If CONFIG_I2C_MULTI_BUS 26720f89c54bSPeter Tyser is set, specify a list of bus-device pairs. Otherwise, specify 26730f89c54bSPeter Tyser a 1D array of device addresses 2674bb99ad6dSBen Warren 2675bb99ad6dSBen Warren e.g. 2676bb99ad6dSBen Warren #undef CONFIG_I2C_MULTI_BUS 26776d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_I2C_NOPROBES {0x50,0x68} 2678bb99ad6dSBen Warren 2679bb99ad6dSBen Warren will skip addresses 0x50 and 0x68 on a board with one I2C bus 2680bb99ad6dSBen Warren 2681bb99ad6dSBen Warren #define CONFIG_I2C_MULTI_BUS 26826d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_I2C_MULTI_NOPROBES {{0,0x50},{0,0x68},{1,0x54}} 2683bb99ad6dSBen Warren 2684bb99ad6dSBen Warren will skip addresses 0x50 and 0x68 on bus 0 and address 0x54 on bus 1 2685bb99ad6dSBen Warren 26866d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SPD_BUS_NUM 2687be5e6181STimur Tabi 2688be5e6181STimur Tabi If defined, then this indicates the I2C bus number for DDR SPD. 2689be5e6181STimur Tabi If not defined, then U-Boot assumes that SPD is on I2C bus 0. 2690be5e6181STimur Tabi 26916d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_RTC_BUS_NUM 26920dc018ecSStefan Roese 26930dc018ecSStefan Roese If defined, then this indicates the I2C bus number for the RTC. 26940dc018ecSStefan Roese If not defined, then U-Boot assumes that RTC is on I2C bus 0. 26950dc018ecSStefan Roese 26966d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_DTT_BUS_NUM 26970dc018ecSStefan Roese 26980dc018ecSStefan Roese If defined, then this indicates the I2C bus number for the DTT. 26990dc018ecSStefan Roese If not defined, then U-Boot assumes that DTT is on I2C bus 0. 27000dc018ecSStefan Roese 27016d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_DTT_ADDR: 27029ebbb54fSVictor Gallardo 27039ebbb54fSVictor Gallardo If defined, specifies the I2C address of the DTT device. 27049ebbb54fSVictor Gallardo If not defined, then U-Boot uses predefined value for 27059ebbb54fSVictor Gallardo specified DTT device. 27069ebbb54fSVictor Gallardo 27072ac6985aSAndrew Dyer CONFIG_SOFT_I2C_READ_REPEATED_START 27082ac6985aSAndrew Dyer 27092ac6985aSAndrew Dyer defining this will force the i2c_read() function in 27102ac6985aSAndrew Dyer the soft_i2c driver to perform an I2C repeated start 27112ac6985aSAndrew Dyer between writing the address pointer and reading the 27122ac6985aSAndrew Dyer data. If this define is omitted the default behaviour 27132ac6985aSAndrew Dyer of doing a stop-start sequence will be used. Most I2C 27142ac6985aSAndrew Dyer devices can use either method, but some require one or 27152ac6985aSAndrew Dyer the other. 2716be5e6181STimur Tabi 2717c609719bSwdenk- SPI Support: CONFIG_SPI 2718c609719bSwdenk 2719c609719bSwdenk Enables SPI driver (so far only tested with 2720c609719bSwdenk SPI EEPROM, also an instance works with Crystal A/D and 2721c609719bSwdenk D/As on the SACSng board) 2722c609719bSwdenk 27236639562eSYoshihiro Shimoda CONFIG_SH_SPI 27246639562eSYoshihiro Shimoda 27256639562eSYoshihiro Shimoda Enables the driver for SPI controller on SuperH. Currently 27266639562eSYoshihiro Shimoda only SH7757 is supported. 27276639562eSYoshihiro Shimoda 2728c609719bSwdenk CONFIG_SPI_X 2729c609719bSwdenk 2730c609719bSwdenk Enables extended (16-bit) SPI EEPROM addressing. 2731c609719bSwdenk (symmetrical to CONFIG_I2C_X) 2732c609719bSwdenk 2733c609719bSwdenk CONFIG_SOFT_SPI 2734c609719bSwdenk 2735c609719bSwdenk Enables a software (bit-bang) SPI driver rather than 2736c609719bSwdenk using hardware support. This is a general purpose 2737c609719bSwdenk driver that only requires three general I/O port pins 2738c609719bSwdenk (two outputs, one input) to function. If this is 2739c609719bSwdenk defined, the board configuration must define several 2740c609719bSwdenk SPI configuration items (port pins to use, etc). For 2741c609719bSwdenk an example, see include/configs/sacsng.h. 2742c609719bSwdenk 274304a9e118SBen Warren CONFIG_HARD_SPI 274404a9e118SBen Warren 274504a9e118SBen Warren Enables a hardware SPI driver for general-purpose reads 274604a9e118SBen Warren and writes. As with CONFIG_SOFT_SPI, the board configuration 274704a9e118SBen Warren must define a list of chip-select function pointers. 274804a9e118SBen Warren Currently supported on some MPC8xxx processors. For an 274904a9e118SBen Warren example, see include/configs/mpc8349emds.h. 275004a9e118SBen Warren 275138254f45SGuennadi Liakhovetski CONFIG_MXC_SPI 275238254f45SGuennadi Liakhovetski 275338254f45SGuennadi Liakhovetski Enables the driver for the SPI controllers on i.MX and MXC 27542e3cd1cdSFabio Estevam SoCs. Currently i.MX31/35/51 are supported. 275538254f45SGuennadi Liakhovetski 2756f659b573SHeiko Schocher CONFIG_SYS_SPI_MXC_WAIT 2757f659b573SHeiko Schocher Timeout for waiting until spi transfer completed. 2758f659b573SHeiko Schocher default: (CONFIG_SYS_HZ/100) /* 10 ms */ 2759f659b573SHeiko Schocher 27600133502eSMatthias Fuchs- FPGA Support: CONFIG_FPGA 27610133502eSMatthias Fuchs 27620133502eSMatthias Fuchs Enables FPGA subsystem. 27630133502eSMatthias Fuchs 27640133502eSMatthias Fuchs CONFIG_FPGA_<vendor> 27650133502eSMatthias Fuchs 27660133502eSMatthias Fuchs Enables support for specific chip vendors. 27670133502eSMatthias Fuchs (ALTERA, XILINX) 27680133502eSMatthias Fuchs 27690133502eSMatthias Fuchs CONFIG_FPGA_<family> 27700133502eSMatthias Fuchs 27710133502eSMatthias Fuchs Enables support for FPGA family. 27720133502eSMatthias Fuchs (SPARTAN2, SPARTAN3, VIRTEX2, CYCLONE2, ACEX1K, ACEX) 27730133502eSMatthias Fuchs 27740133502eSMatthias Fuchs CONFIG_FPGA_COUNT 2775c609719bSwdenk 2776c609719bSwdenk Specify the number of FPGA devices to support. 2777c609719bSwdenk 277864e809afSSiva Durga Prasad Paladugu CONFIG_CMD_FPGA_LOADMK 277964e809afSSiva Durga Prasad Paladugu 278064e809afSSiva Durga Prasad Paladugu Enable support for fpga loadmk command 278164e809afSSiva Durga Prasad Paladugu 278267193864SMichal Simek CONFIG_CMD_FPGA_LOADP 278367193864SMichal Simek 278467193864SMichal Simek Enable support for fpga loadp command - load partial bitstream 278567193864SMichal Simek 278667193864SMichal Simek CONFIG_CMD_FPGA_LOADBP 278767193864SMichal Simek 278867193864SMichal Simek Enable support for fpga loadbp command - load partial bitstream 278967193864SMichal Simek (Xilinx only) 279067193864SMichal Simek 27916d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_PROG_FEEDBACK 2792c609719bSwdenk 2793c609719bSwdenk Enable printing of hash marks during FPGA configuration. 2794c609719bSwdenk 27956d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_BUSY 2796c609719bSwdenk 2797c609719bSwdenk Enable checks on FPGA configuration interface busy 2798c609719bSwdenk status by the configuration function. This option 2799c609719bSwdenk will require a board or device specific function to 2800c609719bSwdenk be written. 2801c609719bSwdenk 2802c609719bSwdenk CONFIG_FPGA_DELAY 2803c609719bSwdenk 2804c609719bSwdenk If defined, a function that provides delays in the FPGA 2805c609719bSwdenk configuration driver. 2806c609719bSwdenk 28076d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_CTRLC 2808c609719bSwdenk Allow Control-C to interrupt FPGA configuration 2809c609719bSwdenk 28106d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_ERROR 2811c609719bSwdenk 2812c609719bSwdenk Check for configuration errors during FPGA bitfile 2813c609719bSwdenk loading. For example, abort during Virtex II 2814c609719bSwdenk configuration if the INIT_B line goes low (which 2815c609719bSwdenk indicated a CRC error). 2816c609719bSwdenk 28176d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_INIT 2818c609719bSwdenk 2819c609719bSwdenk Maximum time to wait for the INIT_B line to deassert 2820c609719bSwdenk after PROB_B has been deasserted during a Virtex II 2821c609719bSwdenk FPGA configuration sequence. The default time is 500 282211ccc33fSMarcel Ziswiler ms. 2823c609719bSwdenk 28246d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_BUSY 2825c609719bSwdenk 2826c609719bSwdenk Maximum time to wait for BUSY to deassert during 282711ccc33fSMarcel Ziswiler Virtex II FPGA configuration. The default is 5 ms. 2828c609719bSwdenk 28296d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_CONFIG 2830c609719bSwdenk 2831c609719bSwdenk Time to wait after FPGA configuration. The default is 283211ccc33fSMarcel Ziswiler 200 ms. 2833c609719bSwdenk 2834c609719bSwdenk- Configuration Management: 2835b2b8a696SStefan Roese CONFIG_BUILD_TARGET 2836b2b8a696SStefan Roese 2837b2b8a696SStefan Roese Some SoCs need special image types (e.g. U-Boot binary 2838b2b8a696SStefan Roese with a special header) as build targets. By defining 2839b2b8a696SStefan Roese CONFIG_BUILD_TARGET in the SoC / board header, this 2840b2b8a696SStefan Roese special image will be automatically built upon calling 2841b2b8a696SStefan Roese make / MAKEALL. 2842b2b8a696SStefan Roese 2843c609719bSwdenk CONFIG_IDENT_STRING 2844c609719bSwdenk 2845c609719bSwdenk If defined, this string will be added to the U-Boot 2846c609719bSwdenk version information (U_BOOT_VERSION) 2847c609719bSwdenk 2848c609719bSwdenk- Vendor Parameter Protection: 2849c609719bSwdenk 2850c609719bSwdenk U-Boot considers the values of the environment 2851c609719bSwdenk variables "serial#" (Board Serial Number) and 28527152b1d0Swdenk "ethaddr" (Ethernet Address) to be parameters that 2853c609719bSwdenk are set once by the board vendor / manufacturer, and 2854c609719bSwdenk protects these variables from casual modification by 2855c609719bSwdenk the user. Once set, these variables are read-only, 2856c609719bSwdenk and write or delete attempts are rejected. You can 285711ccc33fSMarcel Ziswiler change this behaviour: 2858c609719bSwdenk 2859c609719bSwdenk If CONFIG_ENV_OVERWRITE is #defined in your config 2860c609719bSwdenk file, the write protection for vendor parameters is 286147cd00faSwdenk completely disabled. Anybody can change or delete 2862c609719bSwdenk these parameters. 2863c609719bSwdenk 2864c609719bSwdenk Alternatively, if you #define _both_ CONFIG_ETHADDR 2865c609719bSwdenk _and_ CONFIG_OVERWRITE_ETHADDR_ONCE, a default 286611ccc33fSMarcel Ziswiler Ethernet address is installed in the environment, 2867c609719bSwdenk which can be changed exactly ONCE by the user. [The 2868c609719bSwdenk serial# is unaffected by this, i. e. it remains 2869c609719bSwdenk read-only.] 2870c609719bSwdenk 28712598090bSJoe Hershberger The same can be accomplished in a more flexible way 28722598090bSJoe Hershberger for any variable by configuring the type of access 28732598090bSJoe Hershberger to allow for those variables in the ".flags" variable 28742598090bSJoe Hershberger or define CONFIG_ENV_FLAGS_LIST_STATIC. 28752598090bSJoe Hershberger 2876c609719bSwdenk- Protected RAM: 2877c609719bSwdenk CONFIG_PRAM 2878c609719bSwdenk 2879c609719bSwdenk Define this variable to enable the reservation of 2880c609719bSwdenk "protected RAM", i. e. RAM which is not overwritten 2881c609719bSwdenk by U-Boot. Define CONFIG_PRAM to hold the number of 2882c609719bSwdenk kB you want to reserve for pRAM. You can overwrite 2883c609719bSwdenk this default value by defining an environment 2884c609719bSwdenk variable "pram" to the number of kB you want to 2885c609719bSwdenk reserve. Note that the board info structure will 2886c609719bSwdenk still show the full amount of RAM. If pRAM is 2887c609719bSwdenk reserved, a new environment variable "mem" will 2888c609719bSwdenk automatically be defined to hold the amount of 2889c609719bSwdenk remaining RAM in a form that can be passed as boot 2890c609719bSwdenk argument to Linux, for instance like that: 2891c609719bSwdenk 2892fe126d8bSWolfgang Denk setenv bootargs ... mem=\${mem} 2893c609719bSwdenk saveenv 2894c609719bSwdenk 2895c609719bSwdenk This way you can tell Linux not to use this memory, 2896c609719bSwdenk either, which results in a memory region that will 2897c609719bSwdenk not be affected by reboots. 2898c609719bSwdenk 2899c609719bSwdenk *WARNING* If your board configuration uses automatic 2900c609719bSwdenk detection of the RAM size, you must make sure that 2901c609719bSwdenk this memory test is non-destructive. So far, the 2902c609719bSwdenk following board configurations are known to be 2903c609719bSwdenk "pRAM-clean": 2904c609719bSwdenk 29051b0757ecSWolfgang Denk IVMS8, IVML24, SPD8xx, TQM8xxL, 29061b0757ecSWolfgang Denk HERMES, IP860, RPXlite, LWMON, 2907544d97e9SWolfgang Denk FLAGADM, TQM8260 2908c609719bSwdenk 290940fef049SGabe Black- Access to physical memory region (> 4GB) 291040fef049SGabe Black Some basic support is provided for operations on memory not 291140fef049SGabe Black normally accessible to U-Boot - e.g. some architectures 291240fef049SGabe Black support access to more than 4GB of memory on 32-bit 291340fef049SGabe Black machines using physical address extension or similar. 291440fef049SGabe Black Define CONFIG_PHYSMEM to access this basic support, which 291540fef049SGabe Black currently only supports clearing the memory. 291640fef049SGabe Black 2917c609719bSwdenk- Error Recovery: 2918c609719bSwdenk CONFIG_PANIC_HANG 2919c609719bSwdenk 2920c609719bSwdenk Define this variable to stop the system in case of a 2921c609719bSwdenk fatal error, so that you have to reset it manually. 2922c609719bSwdenk This is probably NOT a good idea for an embedded 292311ccc33fSMarcel Ziswiler system where you want the system to reboot 2924c609719bSwdenk automatically as fast as possible, but it may be 2925c609719bSwdenk useful during development since you can try to debug 2926c609719bSwdenk the conditions that lead to the situation. 2927c609719bSwdenk 2928c609719bSwdenk CONFIG_NET_RETRY_COUNT 2929c609719bSwdenk 2930c609719bSwdenk This variable defines the number of retries for 2931c609719bSwdenk network operations like ARP, RARP, TFTP, or BOOTP 2932c609719bSwdenk before giving up the operation. If not defined, a 2933c609719bSwdenk default value of 5 is used. 2934c609719bSwdenk 293540cb90eeSGuennadi Liakhovetski CONFIG_ARP_TIMEOUT 293640cb90eeSGuennadi Liakhovetski 293740cb90eeSGuennadi Liakhovetski Timeout waiting for an ARP reply in milliseconds. 293840cb90eeSGuennadi Liakhovetski 293948a3e999STetsuyuki Kobayashi CONFIG_NFS_TIMEOUT 294048a3e999STetsuyuki Kobayashi 294148a3e999STetsuyuki Kobayashi Timeout in milliseconds used in NFS protocol. 294248a3e999STetsuyuki Kobayashi If you encounter "ERROR: Cannot umount" in nfs command, 294348a3e999STetsuyuki Kobayashi try longer timeout such as 294448a3e999STetsuyuki Kobayashi #define CONFIG_NFS_TIMEOUT 10000UL 294548a3e999STetsuyuki Kobayashi 2946c609719bSwdenk- Command Interpreter: 29478078f1a5SWolfgang Denk CONFIG_AUTO_COMPLETE 294804a85b3bSwdenk 294904a85b3bSwdenk Enable auto completion of commands using TAB. 295004a85b3bSwdenk 29516d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_HUSH_PARSER 2952c609719bSwdenk 2953c609719bSwdenk Define this variable to enable the "hush" shell (from 2954c609719bSwdenk Busybox) as command line interpreter, thus enabling 2955c609719bSwdenk powerful command line syntax like 2956c609719bSwdenk if...then...else...fi conditionals or `&&' and '||' 2957c609719bSwdenk constructs ("shell scripts"). 2958c609719bSwdenk 2959c609719bSwdenk If undefined, you get the old, much simpler behaviour 2960c609719bSwdenk with a somewhat smaller memory footprint. 2961c609719bSwdenk 2962c609719bSwdenk 29636d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PROMPT_HUSH_PS2 2964c609719bSwdenk 2965c609719bSwdenk This defines the secondary prompt string, which is 2966c609719bSwdenk printed when the command interpreter needs more input 2967c609719bSwdenk to complete a command. Usually "> ". 2968c609719bSwdenk 2969c609719bSwdenk Note: 2970c609719bSwdenk 2971c609719bSwdenk In the current implementation, the local variables 2972c609719bSwdenk space and global environment variables space are 2973c609719bSwdenk separated. Local variables are those you define by 29743b57fe0aSwdenk simply typing `name=value'. To access a local 2975c609719bSwdenk variable later on, you have write `$name' or 29763b57fe0aSwdenk `${name}'; to execute the contents of a variable 29773b57fe0aSwdenk directly type `$name' at the command prompt. 2978c609719bSwdenk 2979c609719bSwdenk Global environment variables are those you use 2980c609719bSwdenk setenv/printenv to work with. To run a command stored 2981c609719bSwdenk in such a variable, you need to use the run command, 2982c609719bSwdenk and you must not use the '$' sign to access them. 2983c609719bSwdenk 2984c609719bSwdenk To store commands and special characters in a 2985c609719bSwdenk variable, please use double quotation marks 2986c609719bSwdenk surrounding the whole text of the variable, instead 2987c609719bSwdenk of the backslashes before semicolons and special 2988c609719bSwdenk symbols. 2989c609719bSwdenk 2990aa0c71acSWolfgang Denk- Commandline Editing and History: 2991aa0c71acSWolfgang Denk CONFIG_CMDLINE_EDITING 2992aa0c71acSWolfgang Denk 299311ccc33fSMarcel Ziswiler Enable editing and History functions for interactive 2994aa0c71acSWolfgang Denk commandline input operations 2995aa0c71acSWolfgang Denk 2996a8c7c708Swdenk- Default Environment: 2997c609719bSwdenk CONFIG_EXTRA_ENV_SETTINGS 2998c609719bSwdenk 2999c609719bSwdenk Define this to contain any number of null terminated 3000c609719bSwdenk strings (variable = value pairs) that will be part of 30017152b1d0Swdenk the default environment compiled into the boot image. 30022262cfeeSwdenk 3003c609719bSwdenk For example, place something like this in your 3004c609719bSwdenk board's config file: 3005c609719bSwdenk 3006c609719bSwdenk #define CONFIG_EXTRA_ENV_SETTINGS \ 3007c609719bSwdenk "myvar1=value1\0" \ 3008c609719bSwdenk "myvar2=value2\0" 3009c609719bSwdenk 3010c609719bSwdenk Warning: This method is based on knowledge about the 3011c609719bSwdenk internal format how the environment is stored by the 30122262cfeeSwdenk U-Boot code. This is NOT an official, exported 3013c609719bSwdenk interface! Although it is unlikely that this format 30147152b1d0Swdenk will change soon, there is no guarantee either. 3015c609719bSwdenk You better know what you are doing here. 3016c609719bSwdenk 3017c609719bSwdenk Note: overly (ab)use of the default environment is 3018c609719bSwdenk discouraged. Make sure to check other ways to preset 301974de7aefSWolfgang Denk the environment like the "source" command or the 3020c609719bSwdenk boot command first. 3021c609719bSwdenk 30225e724ca2SStephen Warren CONFIG_ENV_VARS_UBOOT_CONFIG 30235e724ca2SStephen Warren 30245e724ca2SStephen Warren Define this in order to add variables describing the 30255e724ca2SStephen Warren U-Boot build configuration to the default environment. 30265e724ca2SStephen Warren These will be named arch, cpu, board, vendor, and soc. 30275e724ca2SStephen Warren 30285e724ca2SStephen Warren Enabling this option will cause the following to be defined: 30295e724ca2SStephen Warren 30305e724ca2SStephen Warren - CONFIG_SYS_ARCH 30315e724ca2SStephen Warren - CONFIG_SYS_CPU 30325e724ca2SStephen Warren - CONFIG_SYS_BOARD 30335e724ca2SStephen Warren - CONFIG_SYS_VENDOR 30345e724ca2SStephen Warren - CONFIG_SYS_SOC 30355e724ca2SStephen Warren 30367e27f89fSTom Rini CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG 30377e27f89fSTom Rini 30387e27f89fSTom Rini Define this in order to add variables describing certain 30397e27f89fSTom Rini run-time determined information about the hardware to the 30407e27f89fSTom Rini environment. These will be named board_name, board_rev. 30417e27f89fSTom Rini 304206fd8538SSimon Glass CONFIG_DELAY_ENVIRONMENT 304306fd8538SSimon Glass 304406fd8538SSimon Glass Normally the environment is loaded when the board is 304506fd8538SSimon Glass intialised so that it is available to U-Boot. This inhibits 304606fd8538SSimon Glass that so that the environment is not available until 304706fd8538SSimon Glass explicitly loaded later by U-Boot code. With CONFIG_OF_CONTROL 304806fd8538SSimon Glass this is instead controlled by the value of 304906fd8538SSimon Glass /config/load-environment. 305006fd8538SSimon Glass 3051a8c7c708Swdenk- DataFlash Support: 30522abbe075Swdenk CONFIG_HAS_DATAFLASH 30532abbe075Swdenk 30542abbe075Swdenk Defining this option enables DataFlash features and 30552abbe075Swdenk allows to read/write in Dataflash via the standard 30562abbe075Swdenk commands cp, md... 30572abbe075Swdenk 3058f61ec45eSEric Nelson- Serial Flash support 3059f61ec45eSEric Nelson CONFIG_CMD_SF 3060f61ec45eSEric Nelson 3061f61ec45eSEric Nelson Defining this option enables SPI flash commands 3062f61ec45eSEric Nelson 'sf probe/read/write/erase/update'. 3063f61ec45eSEric Nelson 3064f61ec45eSEric Nelson Usage requires an initial 'probe' to define the serial 3065f61ec45eSEric Nelson flash parameters, followed by read/write/erase/update 3066f61ec45eSEric Nelson commands. 3067f61ec45eSEric Nelson 3068f61ec45eSEric Nelson The following defaults may be provided by the platform 3069f61ec45eSEric Nelson to handle the common case when only a single serial 3070f61ec45eSEric Nelson flash is present on the system. 3071f61ec45eSEric Nelson 3072f61ec45eSEric Nelson CONFIG_SF_DEFAULT_BUS Bus identifier 3073f61ec45eSEric Nelson CONFIG_SF_DEFAULT_CS Chip-select 3074f61ec45eSEric Nelson CONFIG_SF_DEFAULT_MODE (see include/spi.h) 3075f61ec45eSEric Nelson CONFIG_SF_DEFAULT_SPEED in Hz 3076f61ec45eSEric Nelson 307724007273SSimon Glass CONFIG_CMD_SF_TEST 307824007273SSimon Glass 307924007273SSimon Glass Define this option to include a destructive SPI flash 308024007273SSimon Glass test ('sf test'). 308124007273SSimon Glass 30821dcd6d03SJagannadha Sutradharudu Teki CONFIG_SPI_FLASH_BAR Ban/Extended Addr Reg 30831dcd6d03SJagannadha Sutradharudu Teki 30841dcd6d03SJagannadha Sutradharudu Teki Define this option to use the Bank addr/Extended addr 30851dcd6d03SJagannadha Sutradharudu Teki support on SPI flashes which has size > 16Mbytes. 30861dcd6d03SJagannadha Sutradharudu Teki 3087b902e07cSJagannadha Sutradharudu Teki CONFIG_SF_DUAL_FLASH Dual flash memories 3088b902e07cSJagannadha Sutradharudu Teki 3089b902e07cSJagannadha Sutradharudu Teki Define this option to use dual flash support where two flash 3090b902e07cSJagannadha Sutradharudu Teki memories can be connected with a given cs line. 3091b902e07cSJagannadha Sutradharudu Teki currently Xilinx Zynq qspi support these type of connections. 3092b902e07cSJagannadha Sutradharudu Teki 3093562f8df1SHeiko Schocher CONFIG_SYS_SPI_ST_ENABLE_WP_PIN 3094562f8df1SHeiko Schocher enable the W#/Vpp signal to disable writing to the status 3095562f8df1SHeiko Schocher register on ST MICRON flashes like the N25Q128. 3096562f8df1SHeiko Schocher The status register write enable/disable bit, combined with 3097562f8df1SHeiko Schocher the W#/VPP signal provides hardware data protection for the 3098562f8df1SHeiko Schocher device as follows: When the enable/disable bit is set to 1, 3099562f8df1SHeiko Schocher and the W#/VPP signal is driven LOW, the status register 3100562f8df1SHeiko Schocher nonvolatile bits become read-only and the WRITE STATUS REGISTER 3101562f8df1SHeiko Schocher operation will not execute. The only way to exit this 3102562f8df1SHeiko Schocher hardware-protected mode is to drive W#/VPP HIGH. 3103562f8df1SHeiko Schocher 31043f85ce27Swdenk- SystemACE Support: 31053f85ce27Swdenk CONFIG_SYSTEMACE 31063f85ce27Swdenk 31073f85ce27Swdenk Adding this option adds support for Xilinx SystemACE 31083f85ce27Swdenk chips attached via some sort of local bus. The address 310911ccc33fSMarcel Ziswiler of the chip must also be defined in the 31106d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SYSTEMACE_BASE macro. For example: 31113f85ce27Swdenk 31123f85ce27Swdenk #define CONFIG_SYSTEMACE 31136d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_SYSTEMACE_BASE 0xf0000000 31143f85ce27Swdenk 31153f85ce27Swdenk When SystemACE support is added, the "ace" device type 31163f85ce27Swdenk becomes available to the fat commands, i.e. fatls. 31173f85ce27Swdenk 3118ecb0ccd9SWolfgang Denk- TFTP Fixed UDP Port: 3119ecb0ccd9SWolfgang Denk CONFIG_TFTP_PORT 3120ecb0ccd9SWolfgang Denk 312128cb9375SWolfgang Denk If this is defined, the environment variable tftpsrcp 3122ecb0ccd9SWolfgang Denk is used to supply the TFTP UDP source port value. 312328cb9375SWolfgang Denk If tftpsrcp isn't defined, the normal pseudo-random port 3124ecb0ccd9SWolfgang Denk number generator is used. 3125ecb0ccd9SWolfgang Denk 312628cb9375SWolfgang Denk Also, the environment variable tftpdstp is used to supply 312728cb9375SWolfgang Denk the TFTP UDP destination port value. If tftpdstp isn't 312828cb9375SWolfgang Denk defined, the normal port 69 is used. 312928cb9375SWolfgang Denk 313028cb9375SWolfgang Denk The purpose for tftpsrcp is to allow a TFTP server to 3131ecb0ccd9SWolfgang Denk blindly start the TFTP transfer using the pre-configured 3132ecb0ccd9SWolfgang Denk target IP address and UDP port. This has the effect of 3133ecb0ccd9SWolfgang Denk "punching through" the (Windows XP) firewall, allowing 3134ecb0ccd9SWolfgang Denk the remainder of the TFTP transfer to proceed normally. 3135ecb0ccd9SWolfgang Denk A better solution is to properly configure the firewall, 3136ecb0ccd9SWolfgang Denk but sometimes that is not allowed. 3137ecb0ccd9SWolfgang Denk 3138bf36c5d5SSimon Glass- Hashing support: 3139bf36c5d5SSimon Glass CONFIG_CMD_HASH 3140bf36c5d5SSimon Glass 3141bf36c5d5SSimon Glass This enables a generic 'hash' command which can produce 3142bf36c5d5SSimon Glass hashes / digests from a few algorithms (e.g. SHA1, SHA256). 3143bf36c5d5SSimon Glass 3144bf36c5d5SSimon Glass CONFIG_HASH_VERIFY 3145bf36c5d5SSimon Glass 3146bf36c5d5SSimon Glass Enable the hash verify command (hash -v). This adds to code 3147bf36c5d5SSimon Glass size a little. 3148bf36c5d5SSimon Glass 3149bf36c5d5SSimon Glass CONFIG_SHA1 - support SHA1 hashing 3150bf36c5d5SSimon Glass CONFIG_SHA256 - support SHA256 hashing 3151bf36c5d5SSimon Glass 3152bf36c5d5SSimon Glass Note: There is also a sha1sum command, which should perhaps 3153bf36c5d5SSimon Glass be deprecated in favour of 'hash sha1'. 3154bf36c5d5SSimon Glass 3155a11f1873SRobert Winkler- Freescale i.MX specific commands: 3156a11f1873SRobert Winkler CONFIG_CMD_HDMIDETECT 3157a11f1873SRobert Winkler This enables 'hdmidet' command which returns true if an 3158a11f1873SRobert Winkler HDMI monitor is detected. This command is i.MX 6 specific. 3159a11f1873SRobert Winkler 3160a11f1873SRobert Winkler CONFIG_CMD_BMODE 3161a11f1873SRobert Winkler This enables the 'bmode' (bootmode) command for forcing 3162a11f1873SRobert Winkler a boot from specific media. 3163a11f1873SRobert Winkler 3164a11f1873SRobert Winkler This is useful for forcing the ROM's usb downloader to 3165a11f1873SRobert Winkler activate upon a watchdog reset which is nice when iterating 3166a11f1873SRobert Winkler on U-Boot. Using the reset button or running bmode normal 3167a11f1873SRobert Winkler will set it back to normal. This command currently 3168a11f1873SRobert Winkler supports i.MX53 and i.MX6. 3169a11f1873SRobert Winkler 317019c402afSSimon Glass- Signing support: 317119c402afSSimon Glass CONFIG_RSA 317219c402afSSimon Glass 317319c402afSSimon Glass This enables the RSA algorithm used for FIT image verification 31748bf2aad7SDetlev Zundel in U-Boot. See doc/uImage.FIT/signature.txt for more information. 317519c402afSSimon Glass 317619c402afSSimon Glass The signing part is build into mkimage regardless of this 317719c402afSSimon Glass option. 317819c402afSSimon Glass 31799e50c406SHeiko Schocher- bootcount support: 31809e50c406SHeiko Schocher CONFIG_BOOTCOUNT_LIMIT 31819e50c406SHeiko Schocher 31829e50c406SHeiko Schocher This enables the bootcounter support, see: 31839e50c406SHeiko Schocher http://www.denx.de/wiki/DULG/UBootBootCountLimit 31849e50c406SHeiko Schocher 31859e50c406SHeiko Schocher CONFIG_AT91SAM9XE 31869e50c406SHeiko Schocher enable special bootcounter support on at91sam9xe based boards. 31879e50c406SHeiko Schocher CONFIG_BLACKFIN 31889e50c406SHeiko Schocher enable special bootcounter support on blackfin based boards. 31899e50c406SHeiko Schocher CONFIG_SOC_DA8XX 31909e50c406SHeiko Schocher enable special bootcounter support on da850 based boards. 31919e50c406SHeiko Schocher CONFIG_BOOTCOUNT_RAM 31929e50c406SHeiko Schocher enable support for the bootcounter in RAM 31939e50c406SHeiko Schocher CONFIG_BOOTCOUNT_I2C 31949e50c406SHeiko Schocher enable support for the bootcounter on an i2c (like RTC) device. 31959e50c406SHeiko Schocher CONFIG_SYS_I2C_RTC_ADDR = i2c chip address 31969e50c406SHeiko Schocher CONFIG_SYS_BOOTCOUNT_ADDR = i2c addr which is used for 31979e50c406SHeiko Schocher the bootcounter. 31989e50c406SHeiko Schocher CONFIG_BOOTCOUNT_ALEN = address len 319919c402afSSimon Glass 3200a8c7c708Swdenk- Show boot progress: 3201c609719bSwdenk CONFIG_SHOW_BOOT_PROGRESS 3202c609719bSwdenk 3203c609719bSwdenk Defining this option allows to add some board- 3204c609719bSwdenk specific code (calling a user-provided function 3205c609719bSwdenk "show_boot_progress(int)") that enables you to show 3206c609719bSwdenk the system's boot progress on some display (for 3207c609719bSwdenk example, some LED's) on your board. At the moment, 3208c609719bSwdenk the following checkpoints are implemented: 3209c609719bSwdenk 32103a608ca0SSimon Glass- Detailed boot stage timing 32113a608ca0SSimon Glass CONFIG_BOOTSTAGE 32123a608ca0SSimon Glass Define this option to get detailed timing of each stage 32133a608ca0SSimon Glass of the boot process. 32143a608ca0SSimon Glass 32153a608ca0SSimon Glass CONFIG_BOOTSTAGE_USER_COUNT 32163a608ca0SSimon Glass This is the number of available user bootstage records. 32173a608ca0SSimon Glass Each time you call bootstage_mark(BOOTSTAGE_ID_ALLOC, ...) 32183a608ca0SSimon Glass a new ID will be allocated from this stash. If you exceed 32193a608ca0SSimon Glass the limit, recording will stop. 32203a608ca0SSimon Glass 32213a608ca0SSimon Glass CONFIG_BOOTSTAGE_REPORT 32223a608ca0SSimon Glass Define this to print a report before boot, similar to this: 32233a608ca0SSimon Glass 32243a608ca0SSimon Glass Timer summary in microseconds: 32253a608ca0SSimon Glass Mark Elapsed Stage 32263a608ca0SSimon Glass 0 0 reset 32273a608ca0SSimon Glass 3,575,678 3,575,678 board_init_f start 32283a608ca0SSimon Glass 3,575,695 17 arch_cpu_init A9 32293a608ca0SSimon Glass 3,575,777 82 arch_cpu_init done 32303a608ca0SSimon Glass 3,659,598 83,821 board_init_r start 32313a608ca0SSimon Glass 3,910,375 250,777 main_loop 32323a608ca0SSimon Glass 29,916,167 26,005,792 bootm_start 32333a608ca0SSimon Glass 30,361,327 445,160 start_kernel 32343a608ca0SSimon Glass 32352eba38cfSSimon Glass CONFIG_CMD_BOOTSTAGE 32362eba38cfSSimon Glass Add a 'bootstage' command which supports printing a report 32372eba38cfSSimon Glass and un/stashing of bootstage data. 32382eba38cfSSimon Glass 323994fd1316SSimon Glass CONFIG_BOOTSTAGE_FDT 324094fd1316SSimon Glass Stash the bootstage information in the FDT. A root 'bootstage' 324194fd1316SSimon Glass node is created with each bootstage id as a child. Each child 324294fd1316SSimon Glass has a 'name' property and either 'mark' containing the 324394fd1316SSimon Glass mark time in microsecond, or 'accum' containing the 324494fd1316SSimon Glass accumulated time for that bootstage id in microseconds. 324594fd1316SSimon Glass For example: 324694fd1316SSimon Glass 324794fd1316SSimon Glass bootstage { 324894fd1316SSimon Glass 154 { 324994fd1316SSimon Glass name = "board_init_f"; 325094fd1316SSimon Glass mark = <3575678>; 325194fd1316SSimon Glass }; 325294fd1316SSimon Glass 170 { 325394fd1316SSimon Glass name = "lcd"; 325494fd1316SSimon Glass accum = <33482>; 325594fd1316SSimon Glass }; 325694fd1316SSimon Glass }; 325794fd1316SSimon Glass 325894fd1316SSimon Glass Code in the Linux kernel can find this in /proc/devicetree. 325994fd1316SSimon Glass 32601372cce2SMarian BalakowiczLegacy uImage format: 32611372cce2SMarian Balakowicz 3262c609719bSwdenk Arg Where When 3263c609719bSwdenk 1 common/cmd_bootm.c before attempting to boot an image 3264c609719bSwdenk -1 common/cmd_bootm.c Image header has bad magic number 3265c609719bSwdenk 2 common/cmd_bootm.c Image header has correct magic number 3266c609719bSwdenk -2 common/cmd_bootm.c Image header has bad checksum 3267c609719bSwdenk 3 common/cmd_bootm.c Image header has correct checksum 3268c609719bSwdenk -3 common/cmd_bootm.c Image data has bad checksum 3269c609719bSwdenk 4 common/cmd_bootm.c Image data has correct checksum 3270c609719bSwdenk -4 common/cmd_bootm.c Image is for unsupported architecture 3271c609719bSwdenk 5 common/cmd_bootm.c Architecture check OK 32721372cce2SMarian Balakowicz -5 common/cmd_bootm.c Wrong Image Type (not kernel, multi) 3273c609719bSwdenk 6 common/cmd_bootm.c Image Type check OK 3274c609719bSwdenk -6 common/cmd_bootm.c gunzip uncompression error 3275c609719bSwdenk -7 common/cmd_bootm.c Unimplemented compression type 3276c609719bSwdenk 7 common/cmd_bootm.c Uncompression OK 32771372cce2SMarian Balakowicz 8 common/cmd_bootm.c No uncompress/copy overwrite error 3278c609719bSwdenk -9 common/cmd_bootm.c Unsupported OS (not Linux, BSD, VxWorks, QNX) 32791372cce2SMarian Balakowicz 32801372cce2SMarian Balakowicz 9 common/image.c Start initial ramdisk verification 32811372cce2SMarian Balakowicz -10 common/image.c Ramdisk header has bad magic number 32821372cce2SMarian Balakowicz -11 common/image.c Ramdisk header has bad checksum 32831372cce2SMarian Balakowicz 10 common/image.c Ramdisk header is OK 32841372cce2SMarian Balakowicz -12 common/image.c Ramdisk data has bad checksum 32851372cce2SMarian Balakowicz 11 common/image.c Ramdisk data has correct checksum 32861372cce2SMarian Balakowicz 12 common/image.c Ramdisk verification complete, start loading 328711ccc33fSMarcel Ziswiler -13 common/image.c Wrong Image Type (not PPC Linux ramdisk) 32881372cce2SMarian Balakowicz 13 common/image.c Start multifile image verification 32891372cce2SMarian Balakowicz 14 common/image.c No initial ramdisk, no multifile, continue. 32901372cce2SMarian Balakowicz 3291ea0364f1SPeter Tyser 15 arch/<arch>/lib/bootm.c All preparation done, transferring control to OS 3292c609719bSwdenk 3293a47a12beSStefan Roese -30 arch/powerpc/lib/board.c Fatal error, hang the system 329463e73c9aSwdenk -31 post/post.c POST test failed, detected by post_output_backlog() 329563e73c9aSwdenk -32 post/post.c POST test failed, detected by post_run_single() 329663e73c9aSwdenk 3297566a494fSHeiko Schocher 34 common/cmd_doc.c before loading a Image from a DOC device 3298566a494fSHeiko Schocher -35 common/cmd_doc.c Bad usage of "doc" command 3299566a494fSHeiko Schocher 35 common/cmd_doc.c correct usage of "doc" command 3300566a494fSHeiko Schocher -36 common/cmd_doc.c No boot device 3301566a494fSHeiko Schocher 36 common/cmd_doc.c correct boot device 3302566a494fSHeiko Schocher -37 common/cmd_doc.c Unknown Chip ID on boot device 3303566a494fSHeiko Schocher 37 common/cmd_doc.c correct chip ID found, device available 3304566a494fSHeiko Schocher -38 common/cmd_doc.c Read Error on boot device 3305566a494fSHeiko Schocher 38 common/cmd_doc.c reading Image header from DOC device OK 3306566a494fSHeiko Schocher -39 common/cmd_doc.c Image header has bad magic number 3307566a494fSHeiko Schocher 39 common/cmd_doc.c Image header has correct magic number 3308566a494fSHeiko Schocher -40 common/cmd_doc.c Error reading Image from DOC device 3309566a494fSHeiko Schocher 40 common/cmd_doc.c Image header has correct magic number 3310566a494fSHeiko Schocher 41 common/cmd_ide.c before loading a Image from a IDE device 3311566a494fSHeiko Schocher -42 common/cmd_ide.c Bad usage of "ide" command 3312566a494fSHeiko Schocher 42 common/cmd_ide.c correct usage of "ide" command 3313566a494fSHeiko Schocher -43 common/cmd_ide.c No boot device 3314566a494fSHeiko Schocher 43 common/cmd_ide.c boot device found 3315566a494fSHeiko Schocher -44 common/cmd_ide.c Device not available 3316566a494fSHeiko Schocher 44 common/cmd_ide.c Device available 3317566a494fSHeiko Schocher -45 common/cmd_ide.c wrong partition selected 3318566a494fSHeiko Schocher 45 common/cmd_ide.c partition selected 3319566a494fSHeiko Schocher -46 common/cmd_ide.c Unknown partition table 3320566a494fSHeiko Schocher 46 common/cmd_ide.c valid partition table found 3321566a494fSHeiko Schocher -47 common/cmd_ide.c Invalid partition type 3322566a494fSHeiko Schocher 47 common/cmd_ide.c correct partition type 3323566a494fSHeiko Schocher -48 common/cmd_ide.c Error reading Image Header on boot device 3324566a494fSHeiko Schocher 48 common/cmd_ide.c reading Image Header from IDE device OK 3325566a494fSHeiko Schocher -49 common/cmd_ide.c Image header has bad magic number 3326566a494fSHeiko Schocher 49 common/cmd_ide.c Image header has correct magic number 3327566a494fSHeiko Schocher -50 common/cmd_ide.c Image header has bad checksum 3328566a494fSHeiko Schocher 50 common/cmd_ide.c Image header has correct checksum 3329566a494fSHeiko Schocher -51 common/cmd_ide.c Error reading Image from IDE device 3330566a494fSHeiko Schocher 51 common/cmd_ide.c reading Image from IDE device OK 3331566a494fSHeiko Schocher 52 common/cmd_nand.c before loading a Image from a NAND device 3332566a494fSHeiko Schocher -53 common/cmd_nand.c Bad usage of "nand" command 3333566a494fSHeiko Schocher 53 common/cmd_nand.c correct usage of "nand" command 3334566a494fSHeiko Schocher -54 common/cmd_nand.c No boot device 3335566a494fSHeiko Schocher 54 common/cmd_nand.c boot device found 3336566a494fSHeiko Schocher -55 common/cmd_nand.c Unknown Chip ID on boot device 3337566a494fSHeiko Schocher 55 common/cmd_nand.c correct chip ID found, device available 3338566a494fSHeiko Schocher -56 common/cmd_nand.c Error reading Image Header on boot device 3339566a494fSHeiko Schocher 56 common/cmd_nand.c reading Image Header from NAND device OK 3340566a494fSHeiko Schocher -57 common/cmd_nand.c Image header has bad magic number 3341566a494fSHeiko Schocher 57 common/cmd_nand.c Image header has correct magic number 3342566a494fSHeiko Schocher -58 common/cmd_nand.c Error reading Image from NAND device 3343566a494fSHeiko Schocher 58 common/cmd_nand.c reading Image from NAND device OK 3344c609719bSwdenk 3345566a494fSHeiko Schocher -60 common/env_common.c Environment has a bad CRC, using default 3346c609719bSwdenk 3347566a494fSHeiko Schocher 64 net/eth.c starting with Ethernet configuration. 3348566a494fSHeiko Schocher -64 net/eth.c no Ethernet found. 3349566a494fSHeiko Schocher 65 net/eth.c Ethernet found. 3350206c60cbSwdenk 3351566a494fSHeiko Schocher -80 common/cmd_net.c usage wrong 3352566a494fSHeiko Schocher 80 common/cmd_net.c before calling NetLoop() 335311ccc33fSMarcel Ziswiler -81 common/cmd_net.c some error in NetLoop() occurred 3354566a494fSHeiko Schocher 81 common/cmd_net.c NetLoop() back without error 3355566a494fSHeiko Schocher -82 common/cmd_net.c size == 0 (File with size 0 loaded) 3356566a494fSHeiko Schocher 82 common/cmd_net.c trying automatic boot 335774de7aefSWolfgang Denk 83 common/cmd_net.c running "source" command 335874de7aefSWolfgang Denk -83 common/cmd_net.c some error in automatic boot or "source" command 3359566a494fSHeiko Schocher 84 common/cmd_net.c end without errors 3360c609719bSwdenk 33611372cce2SMarian BalakowiczFIT uImage format: 33621372cce2SMarian Balakowicz 33631372cce2SMarian Balakowicz Arg Where When 33641372cce2SMarian Balakowicz 100 common/cmd_bootm.c Kernel FIT Image has correct format 33651372cce2SMarian Balakowicz -100 common/cmd_bootm.c Kernel FIT Image has incorrect format 33661372cce2SMarian Balakowicz 101 common/cmd_bootm.c No Kernel subimage unit name, using configuration 33671372cce2SMarian Balakowicz -101 common/cmd_bootm.c Can't get configuration for kernel subimage 33681372cce2SMarian Balakowicz 102 common/cmd_bootm.c Kernel unit name specified 33691372cce2SMarian Balakowicz -103 common/cmd_bootm.c Can't get kernel subimage node offset 3370f773bea8SMarian Balakowicz 103 common/cmd_bootm.c Found configuration node 33711372cce2SMarian Balakowicz 104 common/cmd_bootm.c Got kernel subimage node offset 33721372cce2SMarian Balakowicz -104 common/cmd_bootm.c Kernel subimage hash verification failed 33731372cce2SMarian Balakowicz 105 common/cmd_bootm.c Kernel subimage hash verification OK 33741372cce2SMarian Balakowicz -105 common/cmd_bootm.c Kernel subimage is for unsupported architecture 33751372cce2SMarian Balakowicz 106 common/cmd_bootm.c Architecture check OK 337611ccc33fSMarcel Ziswiler -106 common/cmd_bootm.c Kernel subimage has wrong type 337711ccc33fSMarcel Ziswiler 107 common/cmd_bootm.c Kernel subimage type OK 33781372cce2SMarian Balakowicz -107 common/cmd_bootm.c Can't get kernel subimage data/size 33791372cce2SMarian Balakowicz 108 common/cmd_bootm.c Got kernel subimage data/size 33801372cce2SMarian Balakowicz -108 common/cmd_bootm.c Wrong image type (not legacy, FIT) 33811372cce2SMarian Balakowicz -109 common/cmd_bootm.c Can't get kernel subimage type 33821372cce2SMarian Balakowicz -110 common/cmd_bootm.c Can't get kernel subimage comp 33831372cce2SMarian Balakowicz -111 common/cmd_bootm.c Can't get kernel subimage os 33841372cce2SMarian Balakowicz -112 common/cmd_bootm.c Can't get kernel subimage load address 33851372cce2SMarian Balakowicz -113 common/cmd_bootm.c Image uncompress/copy overwrite error 33861372cce2SMarian Balakowicz 33871372cce2SMarian Balakowicz 120 common/image.c Start initial ramdisk verification 33881372cce2SMarian Balakowicz -120 common/image.c Ramdisk FIT image has incorrect format 33891372cce2SMarian Balakowicz 121 common/image.c Ramdisk FIT image has correct format 339011ccc33fSMarcel Ziswiler 122 common/image.c No ramdisk subimage unit name, using configuration 33911372cce2SMarian Balakowicz -122 common/image.c Can't get configuration for ramdisk subimage 33921372cce2SMarian Balakowicz 123 common/image.c Ramdisk unit name specified 33931372cce2SMarian Balakowicz -124 common/image.c Can't get ramdisk subimage node offset 33941372cce2SMarian Balakowicz 125 common/image.c Got ramdisk subimage node offset 33951372cce2SMarian Balakowicz -125 common/image.c Ramdisk subimage hash verification failed 33961372cce2SMarian Balakowicz 126 common/image.c Ramdisk subimage hash verification OK 33971372cce2SMarian Balakowicz -126 common/image.c Ramdisk subimage for unsupported architecture 33981372cce2SMarian Balakowicz 127 common/image.c Architecture check OK 33991372cce2SMarian Balakowicz -127 common/image.c Can't get ramdisk subimage data/size 34001372cce2SMarian Balakowicz 128 common/image.c Got ramdisk subimage data/size 34011372cce2SMarian Balakowicz 129 common/image.c Can't get ramdisk load address 34021372cce2SMarian Balakowicz -129 common/image.c Got ramdisk load address 34031372cce2SMarian Balakowicz 340411ccc33fSMarcel Ziswiler -130 common/cmd_doc.c Incorrect FIT image format 34051372cce2SMarian Balakowicz 131 common/cmd_doc.c FIT image format OK 34061372cce2SMarian Balakowicz 340711ccc33fSMarcel Ziswiler -140 common/cmd_ide.c Incorrect FIT image format 34081372cce2SMarian Balakowicz 141 common/cmd_ide.c FIT image format OK 34091372cce2SMarian Balakowicz 341011ccc33fSMarcel Ziswiler -150 common/cmd_nand.c Incorrect FIT image format 34111372cce2SMarian Balakowicz 151 common/cmd_nand.c FIT image format OK 34121372cce2SMarian Balakowicz 341321d29f7fSHeiko Schocher- legacy image format: 341421d29f7fSHeiko Schocher CONFIG_IMAGE_FORMAT_LEGACY 341521d29f7fSHeiko Schocher enables the legacy image format support in U-Boot. 341621d29f7fSHeiko Schocher 341721d29f7fSHeiko Schocher Default: 341821d29f7fSHeiko Schocher enabled if CONFIG_FIT_SIGNATURE is not defined. 341921d29f7fSHeiko Schocher 342021d29f7fSHeiko Schocher CONFIG_DISABLE_IMAGE_LEGACY 342121d29f7fSHeiko Schocher disable the legacy image format 342221d29f7fSHeiko Schocher 342321d29f7fSHeiko Schocher This define is introduced, as the legacy image format is 342421d29f7fSHeiko Schocher enabled per default for backward compatibility. 342521d29f7fSHeiko Schocher 3426d95f6ec7SGabe Black- FIT image support: 3427d95f6ec7SGabe Black CONFIG_FIT 3428d95f6ec7SGabe Black Enable support for the FIT uImage format. 3429d95f6ec7SGabe Black 3430d95f6ec7SGabe Black CONFIG_FIT_BEST_MATCH 3431d95f6ec7SGabe Black When no configuration is explicitly selected, default to the 3432d95f6ec7SGabe Black one whose fdt's compatibility field best matches that of 3433d95f6ec7SGabe Black U-Boot itself. A match is considered "best" if it matches the 3434d95f6ec7SGabe Black most specific compatibility entry of U-Boot's fdt's root node. 3435d95f6ec7SGabe Black The order of entries in the configuration's fdt is ignored. 3436d95f6ec7SGabe Black 34373e569a6bSSimon Glass CONFIG_FIT_SIGNATURE 34383e569a6bSSimon Glass This option enables signature verification of FIT uImages, 34393e569a6bSSimon Glass using a hash signed and verified using RSA. See 34403e569a6bSSimon Glass doc/uImage.FIT/signature.txt for more details. 34413e569a6bSSimon Glass 344221d29f7fSHeiko Schocher WARNING: When relying on signed FIT images with required 344321d29f7fSHeiko Schocher signature check the legacy image format is default 344421d29f7fSHeiko Schocher disabled. If a board need legacy image format support 344521d29f7fSHeiko Schocher enable this through CONFIG_IMAGE_FORMAT_LEGACY 344621d29f7fSHeiko Schocher 34479a4f479bSDirk Eibach CONFIG_FIT_DISABLE_SHA256 34489a4f479bSDirk Eibach Supporting SHA256 hashes has quite an impact on binary size. 34499a4f479bSDirk Eibach For constrained systems sha256 hash support can be disabled 34509a4f479bSDirk Eibach with this option. 34519a4f479bSDirk Eibach 34524cf2609bSWolfgang Denk- Standalone program support: 34534cf2609bSWolfgang Denk CONFIG_STANDALONE_LOAD_ADDR 34544cf2609bSWolfgang Denk 34556feff899SWolfgang Denk This option defines a board specific value for the 34566feff899SWolfgang Denk address where standalone program gets loaded, thus 34576feff899SWolfgang Denk overwriting the architecture dependent default 34584cf2609bSWolfgang Denk settings. 34594cf2609bSWolfgang Denk 34604cf2609bSWolfgang Denk- Frame Buffer Address: 34614cf2609bSWolfgang Denk CONFIG_FB_ADDR 34624cf2609bSWolfgang Denk 34634cf2609bSWolfgang Denk Define CONFIG_FB_ADDR if you want to use specific 346444a53b57SWolfgang Denk address for frame buffer. This is typically the case 346544a53b57SWolfgang Denk when using a graphics controller has separate video 346644a53b57SWolfgang Denk memory. U-Boot will then place the frame buffer at 346744a53b57SWolfgang Denk the given address instead of dynamically reserving it 346844a53b57SWolfgang Denk in system RAM by calling lcd_setmem(), which grabs 346944a53b57SWolfgang Denk the memory for the frame buffer depending on the 347044a53b57SWolfgang Denk configured panel size. 34714cf2609bSWolfgang Denk 34724cf2609bSWolfgang Denk Please see board_init_f function. 34734cf2609bSWolfgang Denk 3474cccfc2abSDetlev Zundel- Automatic software updates via TFTP server 3475cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP 3476cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP_CNT_MAX 3477cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP_MSEC_MAX 3478cccfc2abSDetlev Zundel 3479cccfc2abSDetlev Zundel These options enable and control the auto-update feature; 3480cccfc2abSDetlev Zundel for a more detailed description refer to doc/README.update. 3481cccfc2abSDetlev Zundel 3482cccfc2abSDetlev Zundel- MTD Support (mtdparts command, UBI support) 3483cccfc2abSDetlev Zundel CONFIG_MTD_DEVICE 3484cccfc2abSDetlev Zundel 3485cccfc2abSDetlev Zundel Adds the MTD device infrastructure from the Linux kernel. 3486cccfc2abSDetlev Zundel Needed for mtdparts command support. 3487cccfc2abSDetlev Zundel 3488cccfc2abSDetlev Zundel CONFIG_MTD_PARTITIONS 3489cccfc2abSDetlev Zundel 3490cccfc2abSDetlev Zundel Adds the MTD partitioning infrastructure from the Linux 3491cccfc2abSDetlev Zundel kernel. Needed for UBI support. 3492cccfc2abSDetlev Zundel 3493ff94bc40SHeiko Schocher CONFIG_MTD_NAND_VERIFY_WRITE 3494ff94bc40SHeiko Schocher verify if the written data is correct reread. 3495ff94bc40SHeiko Schocher 349670c219cdSJoe Hershberger- UBI support 349770c219cdSJoe Hershberger CONFIG_CMD_UBI 349870c219cdSJoe Hershberger 349970c219cdSJoe Hershberger Adds commands for interacting with MTD partitions formatted 350070c219cdSJoe Hershberger with the UBI flash translation layer 350170c219cdSJoe Hershberger 350270c219cdSJoe Hershberger Requires also defining CONFIG_RBTREE 350370c219cdSJoe Hershberger 3504147162daSJoe Hershberger CONFIG_UBI_SILENCE_MSG 3505147162daSJoe Hershberger 3506147162daSJoe Hershberger Make the verbose messages from UBI stop printing. This leaves 3507147162daSJoe Hershberger warnings and errors enabled. 3508147162daSJoe Hershberger 3509ff94bc40SHeiko Schocher 3510ff94bc40SHeiko Schocher CONFIG_MTD_UBI_WL_THRESHOLD 3511ff94bc40SHeiko Schocher This parameter defines the maximum difference between the highest 3512ff94bc40SHeiko Schocher erase counter value and the lowest erase counter value of eraseblocks 3513ff94bc40SHeiko Schocher of UBI devices. When this threshold is exceeded, UBI starts performing 3514ff94bc40SHeiko Schocher wear leveling by means of moving data from eraseblock with low erase 3515ff94bc40SHeiko Schocher counter to eraseblocks with high erase counter. 3516ff94bc40SHeiko Schocher 3517ff94bc40SHeiko Schocher The default value should be OK for SLC NAND flashes, NOR flashes and 3518ff94bc40SHeiko Schocher other flashes which have eraseblock life-cycle 100000 or more. 3519ff94bc40SHeiko Schocher However, in case of MLC NAND flashes which typically have eraseblock 3520ff94bc40SHeiko Schocher life-cycle less than 10000, the threshold should be lessened (e.g., 3521ff94bc40SHeiko Schocher to 128 or 256, although it does not have to be power of 2). 3522ff94bc40SHeiko Schocher 3523ff94bc40SHeiko Schocher default: 4096 3524ff94bc40SHeiko Schocher 3525ff94bc40SHeiko Schocher CONFIG_MTD_UBI_BEB_LIMIT 3526ff94bc40SHeiko Schocher This option specifies the maximum bad physical eraseblocks UBI 3527ff94bc40SHeiko Schocher expects on the MTD device (per 1024 eraseblocks). If the 3528ff94bc40SHeiko Schocher underlying flash does not admit of bad eraseblocks (e.g. NOR 3529ff94bc40SHeiko Schocher flash), this value is ignored. 3530ff94bc40SHeiko Schocher 3531ff94bc40SHeiko Schocher NAND datasheets often specify the minimum and maximum NVM 3532ff94bc40SHeiko Schocher (Number of Valid Blocks) for the flashes' endurance lifetime. 3533ff94bc40SHeiko Schocher The maximum expected bad eraseblocks per 1024 eraseblocks 3534ff94bc40SHeiko Schocher then can be calculated as "1024 * (1 - MinNVB / MaxNVB)", 3535ff94bc40SHeiko Schocher which gives 20 for most NANDs (MaxNVB is basically the total 3536ff94bc40SHeiko Schocher count of eraseblocks on the chip). 3537ff94bc40SHeiko Schocher 3538ff94bc40SHeiko Schocher To put it differently, if this value is 20, UBI will try to 3539ff94bc40SHeiko Schocher reserve about 1.9% of physical eraseblocks for bad blocks 3540ff94bc40SHeiko Schocher handling. And that will be 1.9% of eraseblocks on the entire 3541ff94bc40SHeiko Schocher NAND chip, not just the MTD partition UBI attaches. This means 3542ff94bc40SHeiko Schocher that if you have, say, a NAND flash chip admits maximum 40 bad 3543ff94bc40SHeiko Schocher eraseblocks, and it is split on two MTD partitions of the same 3544ff94bc40SHeiko Schocher size, UBI will reserve 40 eraseblocks when attaching a 3545ff94bc40SHeiko Schocher partition. 3546ff94bc40SHeiko Schocher 3547ff94bc40SHeiko Schocher default: 20 3548ff94bc40SHeiko Schocher 3549ff94bc40SHeiko Schocher CONFIG_MTD_UBI_FASTMAP 3550ff94bc40SHeiko Schocher Fastmap is a mechanism which allows attaching an UBI device 3551ff94bc40SHeiko Schocher in nearly constant time. Instead of scanning the whole MTD device it 3552ff94bc40SHeiko Schocher only has to locate a checkpoint (called fastmap) on the device. 3553ff94bc40SHeiko Schocher The on-flash fastmap contains all information needed to attach 3554ff94bc40SHeiko Schocher the device. Using fastmap makes only sense on large devices where 3555ff94bc40SHeiko Schocher attaching by scanning takes long. UBI will not automatically install 3556ff94bc40SHeiko Schocher a fastmap on old images, but you can set the UBI parameter 3557ff94bc40SHeiko Schocher CONFIG_MTD_UBI_FASTMAP_AUTOCONVERT to 1 if you want so. Please note 3558ff94bc40SHeiko Schocher that fastmap-enabled images are still usable with UBI implementations 3559ff94bc40SHeiko Schocher without fastmap support. On typical flash devices the whole fastmap 3560ff94bc40SHeiko Schocher fits into one PEB. UBI will reserve PEBs to hold two fastmaps. 3561ff94bc40SHeiko Schocher 3562ff94bc40SHeiko Schocher CONFIG_MTD_UBI_FASTMAP_AUTOCONVERT 3563ff94bc40SHeiko Schocher Set this parameter to enable fastmap automatically on images 3564ff94bc40SHeiko Schocher without a fastmap. 3565ff94bc40SHeiko Schocher default: 0 3566ff94bc40SHeiko Schocher 356770c219cdSJoe Hershberger- UBIFS support 356870c219cdSJoe Hershberger CONFIG_CMD_UBIFS 356970c219cdSJoe Hershberger 357070c219cdSJoe Hershberger Adds commands for interacting with UBI volumes formatted as 357170c219cdSJoe Hershberger UBIFS. UBIFS is read-only in u-boot. 357270c219cdSJoe Hershberger 357370c219cdSJoe Hershberger Requires UBI support as well as CONFIG_LZO 357470c219cdSJoe Hershberger 3575147162daSJoe Hershberger CONFIG_UBIFS_SILENCE_MSG 3576147162daSJoe Hershberger 3577147162daSJoe Hershberger Make the verbose messages from UBIFS stop printing. This leaves 3578147162daSJoe Hershberger warnings and errors enabled. 3579147162daSJoe Hershberger 35806a11cf48SDaniel Schwierzeck- SPL framework 35816a11cf48SDaniel Schwierzeck CONFIG_SPL 35826a11cf48SDaniel Schwierzeck Enable building of SPL globally. 35836a11cf48SDaniel Schwierzeck 358495579793STom Rini CONFIG_SPL_LDSCRIPT 358595579793STom Rini LDSCRIPT for linking the SPL binary. 358695579793STom Rini 35876ebc3461SAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT 35886ebc3461SAlbert ARIBAUD Maximum size in memory allocated to the SPL, BSS included. 35896ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual memory 35906ebc3461SAlbert ARIBAUD used by SPL from _start to __bss_end does not exceed it. 35918960af8bSAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE 35926ebc3461SAlbert ARIBAUD must not be both defined at the same time. 35936ebc3461SAlbert ARIBAUD 359495579793STom Rini CONFIG_SPL_MAX_SIZE 35956ebc3461SAlbert ARIBAUD Maximum size of the SPL image (text, data, rodata, and 35966ebc3461SAlbert ARIBAUD linker lists sections), BSS excluded. 35976ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual size does 35986ebc3461SAlbert ARIBAUD not exceed it. 359995579793STom Rini 36006a11cf48SDaniel Schwierzeck CONFIG_SPL_TEXT_BASE 36016a11cf48SDaniel Schwierzeck TEXT_BASE for linking the SPL binary. 36026a11cf48SDaniel Schwierzeck 360394a45bb1SScott Wood CONFIG_SPL_RELOC_TEXT_BASE 360494a45bb1SScott Wood Address to relocate to. If unspecified, this is equal to 360594a45bb1SScott Wood CONFIG_SPL_TEXT_BASE (i.e. no relocation is done). 360694a45bb1SScott Wood 360795579793STom Rini CONFIG_SPL_BSS_START_ADDR 360895579793STom Rini Link address for the BSS within the SPL binary. 360995579793STom Rini 361095579793STom Rini CONFIG_SPL_BSS_MAX_SIZE 36116ebc3461SAlbert ARIBAUD Maximum size in memory allocated to the SPL BSS. 36126ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual memory used 36136ebc3461SAlbert ARIBAUD by SPL from __bss_start to __bss_end does not exceed it. 36148960af8bSAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE 36156ebc3461SAlbert ARIBAUD must not be both defined at the same time. 361695579793STom Rini 361795579793STom Rini CONFIG_SPL_STACK 361895579793STom Rini Adress of the start of the stack SPL will use 361995579793STom Rini 362094a45bb1SScott Wood CONFIG_SPL_RELOC_STACK 362194a45bb1SScott Wood Adress of the start of the stack SPL will use after 362294a45bb1SScott Wood relocation. If unspecified, this is equal to 362394a45bb1SScott Wood CONFIG_SPL_STACK. 362494a45bb1SScott Wood 362595579793STom Rini CONFIG_SYS_SPL_MALLOC_START 362695579793STom Rini Starting address of the malloc pool used in SPL. 362795579793STom Rini 362895579793STom Rini CONFIG_SYS_SPL_MALLOC_SIZE 362995579793STom Rini The size of the malloc pool used in SPL. 36306a11cf48SDaniel Schwierzeck 363147f7bcaeSTom Rini CONFIG_SPL_FRAMEWORK 363247f7bcaeSTom Rini Enable the SPL framework under common/. This framework 363347f7bcaeSTom Rini supports MMC, NAND and YMODEM loading of U-Boot and NAND 363447f7bcaeSTom Rini NAND loading of the Linux Kernel. 363547f7bcaeSTom Rini 36369607faf2STom Rini CONFIG_SPL_OS_BOOT 36379607faf2STom Rini Enable booting directly to an OS from SPL. 36389607faf2STom Rini See also: doc/README.falcon 36399607faf2STom Rini 3640861a86f4STom Rini CONFIG_SPL_DISPLAY_PRINT 3641861a86f4STom Rini For ARM, enable an optional function to print more information 3642861a86f4STom Rini about the running system. 3643861a86f4STom Rini 36444b919725SScott Wood CONFIG_SPL_INIT_MINIMAL 36454b919725SScott Wood Arch init code should be built for a very small image 36464b919725SScott Wood 36476a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBCOMMON_SUPPORT 36486a11cf48SDaniel Schwierzeck Support for common/libcommon.o in SPL binary 36496a11cf48SDaniel Schwierzeck 36506a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBDISK_SUPPORT 36516a11cf48SDaniel Schwierzeck Support for disk/libdisk.o in SPL binary 36526a11cf48SDaniel Schwierzeck 36536a11cf48SDaniel Schwierzeck CONFIG_SPL_I2C_SUPPORT 36546a11cf48SDaniel Schwierzeck Support for drivers/i2c/libi2c.o in SPL binary 36556a11cf48SDaniel Schwierzeck 36566a11cf48SDaniel Schwierzeck CONFIG_SPL_GPIO_SUPPORT 36576a11cf48SDaniel Schwierzeck Support for drivers/gpio/libgpio.o in SPL binary 36586a11cf48SDaniel Schwierzeck 36596a11cf48SDaniel Schwierzeck CONFIG_SPL_MMC_SUPPORT 36606a11cf48SDaniel Schwierzeck Support for drivers/mmc/libmmc.o in SPL binary 36616a11cf48SDaniel Schwierzeck 366295579793STom Rini CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR, 366395579793STom Rini CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS, 3664fae81c72SGuillaume GARDET CONFIG_SYS_MMC_SD_FS_BOOT_PARTITION 366595579793STom Rini Address, size and partition on the MMC to load U-Boot from 366695579793STom Rini when the MMC is being used in raw mode. 366795579793STom Rini 36682b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 36692b75b0adSPeter Korsgaard Sector to load kernel uImage from when MMC is being 36702b75b0adSPeter Korsgaard used in raw mode (for Falcon mode) 36712b75b0adSPeter Korsgaard 36722b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR, 36732b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS 36742b75b0adSPeter Korsgaard Sector and number of sectors to load kernel argument 36752b75b0adSPeter Korsgaard parameters from when MMC is being used in raw mode 36762b75b0adSPeter Korsgaard (for falcon mode) 36772b75b0adSPeter Korsgaard 367895579793STom Rini CONFIG_SPL_FAT_SUPPORT 367995579793STom Rini Support for fs/fat/libfat.o in SPL binary 368095579793STom Rini 3681fae81c72SGuillaume GARDET CONFIG_SPL_EXT_SUPPORT 3682fae81c72SGuillaume GARDET Support for EXT filesystem in SPL binary 368395579793STom Rini 3684fae81c72SGuillaume GARDET CONFIG_SPL_FS_LOAD_PAYLOAD_NAME 3685fae81c72SGuillaume GARDET Filename to read to load U-Boot when reading from filesystem 3686fae81c72SGuillaume GARDET 3687fae81c72SGuillaume GARDET CONFIG_SPL_FS_LOAD_KERNEL_NAME 36887ad2cc79SPeter Korsgaard Filename to read to load kernel uImage when reading 3689fae81c72SGuillaume GARDET from filesystem (for Falcon mode) 36907ad2cc79SPeter Korsgaard 3691fae81c72SGuillaume GARDET CONFIG_SPL_FS_LOAD_ARGS_NAME 36927ad2cc79SPeter Korsgaard Filename to read to load kernel argument parameters 3693fae81c72SGuillaume GARDET when reading from filesystem (for Falcon mode) 36947ad2cc79SPeter Korsgaard 369506f60ae3SScott Wood CONFIG_SPL_MPC83XX_WAIT_FOR_NAND 369606f60ae3SScott Wood Set this for NAND SPL on PPC mpc83xx targets, so that 369706f60ae3SScott Wood start.S waits for the rest of the SPL to load before 369806f60ae3SScott Wood continuing (the hardware starts execution after just 369906f60ae3SScott Wood loading the first page rather than the full 4K). 370006f60ae3SScott Wood 3701651fcf60SPrabhakar Kushwaha CONFIG_SPL_SKIP_RELOCATE 3702651fcf60SPrabhakar Kushwaha Avoid SPL relocation 3703651fcf60SPrabhakar Kushwaha 37046f2f01b9SScott Wood CONFIG_SPL_NAND_BASE 37056f2f01b9SScott Wood Include nand_base.c in the SPL. Requires 37066f2f01b9SScott Wood CONFIG_SPL_NAND_DRIVERS. 37076f2f01b9SScott Wood 37086f2f01b9SScott Wood CONFIG_SPL_NAND_DRIVERS 37096f2f01b9SScott Wood SPL uses normal NAND drivers, not minimal drivers. 37106f2f01b9SScott Wood 37116f2f01b9SScott Wood CONFIG_SPL_NAND_ECC 37126f2f01b9SScott Wood Include standard software ECC in the SPL 37136f2f01b9SScott Wood 371495579793STom Rini CONFIG_SPL_NAND_SIMPLE 37157d4b7955SScott Wood Support for NAND boot using simple NAND drivers that 37167d4b7955SScott Wood expose the cmd_ctrl() interface. 371795579793STom Rini 37186dd3b566STom Rini CONFIG_SPL_MTD_SUPPORT 37196dd3b566STom Rini Support for the MTD subsystem within SPL. Useful for 37206dd3b566STom Rini environment on NAND support within SPL. 37216dd3b566STom Rini 37220c3117b1SHeiko Schocher CONFIG_SPL_NAND_RAW_ONLY 37230c3117b1SHeiko Schocher Support to boot only raw u-boot.bin images. Use this only 37240c3117b1SHeiko Schocher if you need to save space. 37250c3117b1SHeiko Schocher 3726bb0dc108SYing Zhang CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT 3727bb0dc108SYing Zhang Set for the SPL on PPC mpc8xxx targets, support for 37285614e71bSYork Sun drivers/ddr/fsl/libddr.o in SPL binary. 3729bb0dc108SYing Zhang 37307c8eea59SYing Zhang CONFIG_SPL_COMMON_INIT_DDR 37317c8eea59SYing Zhang Set for common ddr init with serial presence detect in 37327c8eea59SYing Zhang SPL binary. 37337c8eea59SYing Zhang 373495579793STom Rini CONFIG_SYS_NAND_5_ADDR_CYCLE, CONFIG_SYS_NAND_PAGE_COUNT, 373595579793STom Rini CONFIG_SYS_NAND_PAGE_SIZE, CONFIG_SYS_NAND_OOBSIZE, 373695579793STom Rini CONFIG_SYS_NAND_BLOCK_SIZE, CONFIG_SYS_NAND_BAD_BLOCK_POS, 373795579793STom Rini CONFIG_SYS_NAND_ECCPOS, CONFIG_SYS_NAND_ECCSIZE, 373895579793STom Rini CONFIG_SYS_NAND_ECCBYTES 373995579793STom Rini Defines the size and behavior of the NAND that SPL uses 37407d4b7955SScott Wood to read U-Boot 374195579793STom Rini 3742fbe76ae4SPrabhakar Kushwaha CONFIG_SPL_NAND_BOOT 3743fbe76ae4SPrabhakar Kushwaha Add support NAND boot 3744fbe76ae4SPrabhakar Kushwaha 374595579793STom Rini CONFIG_SYS_NAND_U_BOOT_OFFS 37467d4b7955SScott Wood Location in NAND to read U-Boot from 37477d4b7955SScott Wood 37487d4b7955SScott Wood CONFIG_SYS_NAND_U_BOOT_DST 37497d4b7955SScott Wood Location in memory to load U-Boot to 37507d4b7955SScott Wood 37517d4b7955SScott Wood CONFIG_SYS_NAND_U_BOOT_SIZE 37527d4b7955SScott Wood Size of image to load 375395579793STom Rini 375495579793STom Rini CONFIG_SYS_NAND_U_BOOT_START 37557d4b7955SScott Wood Entry point in loaded image to jump to 375695579793STom Rini 375795579793STom Rini CONFIG_SYS_NAND_HW_ECC_OOBFIRST 375895579793STom Rini Define this if you need to first read the OOB and then the 375995579793STom Rini data. This is used for example on davinci plattforms. 376095579793STom Rini 376195579793STom Rini CONFIG_SPL_OMAP3_ID_NAND 376295579793STom Rini Support for an OMAP3-specific set of functions to return the 376395579793STom Rini ID and MFR of the first attached NAND chip, if present. 376495579793STom Rini 37656a11cf48SDaniel Schwierzeck CONFIG_SPL_SERIAL_SUPPORT 37666a11cf48SDaniel Schwierzeck Support for drivers/serial/libserial.o in SPL binary 37676a11cf48SDaniel Schwierzeck 37686a11cf48SDaniel Schwierzeck CONFIG_SPL_SPI_FLASH_SUPPORT 37696a11cf48SDaniel Schwierzeck Support for drivers/mtd/spi/libspi_flash.o in SPL binary 37706a11cf48SDaniel Schwierzeck 37716a11cf48SDaniel Schwierzeck CONFIG_SPL_SPI_SUPPORT 37726a11cf48SDaniel Schwierzeck Support for drivers/spi/libspi.o in SPL binary 37736a11cf48SDaniel Schwierzeck 3774c57b953dSPavel Machek CONFIG_SPL_RAM_DEVICE 3775c57b953dSPavel Machek Support for running image already present in ram, in SPL binary 3776c57b953dSPavel Machek 37776a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBGENERIC_SUPPORT 37786a11cf48SDaniel Schwierzeck Support for lib/libgeneric.o in SPL binary 37791372cce2SMarian Balakowicz 3780ba1bee43SYing Zhang CONFIG_SPL_ENV_SUPPORT 3781ba1bee43SYing Zhang Support for the environment operating in SPL binary 3782ba1bee43SYing Zhang 3783ba1bee43SYing Zhang CONFIG_SPL_NET_SUPPORT 3784ba1bee43SYing Zhang Support for the net/libnet.o in SPL binary. 3785ba1bee43SYing Zhang It conflicts with SPL env from storage medium specified by 3786ba1bee43SYing Zhang CONFIG_ENV_IS_xxx but CONFIG_ENV_IS_NOWHERE 3787ba1bee43SYing Zhang 378874752baaSScott Wood CONFIG_SPL_PAD_TO 37896113d3f2SBenoît Thébaudeau Image offset to which the SPL should be padded before appending 37906113d3f2SBenoît Thébaudeau the SPL payload. By default, this is defined as 37916113d3f2SBenoît Thébaudeau CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined. 37926113d3f2SBenoît Thébaudeau CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL 37936113d3f2SBenoît Thébaudeau payload without any padding, or >= CONFIG_SPL_MAX_SIZE. 379474752baaSScott Wood 3795ca2fca22SScott Wood CONFIG_SPL_TARGET 3796ca2fca22SScott Wood Final target image containing SPL and payload. Some SPLs 3797ca2fca22SScott Wood use an arch-specific makefile fragment instead, for 3798ca2fca22SScott Wood example if more than one image needs to be produced. 3799ca2fca22SScott Wood 380087ebee39SSimon Glass CONFIG_FIT_SPL_PRINT 380187ebee39SSimon Glass Printing information about a FIT image adds quite a bit of 380287ebee39SSimon Glass code to SPL. So this is normally disabled in SPL. Use this 380387ebee39SSimon Glass option to re-enable it. This will affect the output of the 380487ebee39SSimon Glass bootm command when booting a FIT image. 380587ebee39SSimon Glass 38063aa29de0SYing Zhang- TPL framework 38073aa29de0SYing Zhang CONFIG_TPL 38083aa29de0SYing Zhang Enable building of TPL globally. 38093aa29de0SYing Zhang 38103aa29de0SYing Zhang CONFIG_TPL_PAD_TO 38113aa29de0SYing Zhang Image offset to which the TPL should be padded before appending 38123aa29de0SYing Zhang the TPL payload. By default, this is defined as 38133aa29de0SYing Zhang CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined. 38143aa29de0SYing Zhang CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL 38153aa29de0SYing Zhang payload without any padding, or >= CONFIG_SPL_MAX_SIZE. 38163aa29de0SYing Zhang 3817c609719bSwdenkModem Support: 3818c609719bSwdenk-------------- 3819c609719bSwdenk 3820566e5cf4SWolfgang Denk[so far only for SMDK2400 boards] 3821c609719bSwdenk 382211ccc33fSMarcel Ziswiler- Modem support enable: 3823c609719bSwdenk CONFIG_MODEM_SUPPORT 3824c609719bSwdenk 3825c609719bSwdenk- RTS/CTS Flow control enable: 3826c609719bSwdenk CONFIG_HWFLOW 3827c609719bSwdenk 3828c609719bSwdenk- Modem debug support: 3829c609719bSwdenk CONFIG_MODEM_SUPPORT_DEBUG 3830c609719bSwdenk 3831c609719bSwdenk Enables debugging stuff (char screen[1024], dbg()) 3832c609719bSwdenk for modem support. Useful only with BDI2000. 3833c609719bSwdenk 3834a8c7c708Swdenk- Interrupt support (PPC): 3835a8c7c708Swdenk 3836a8c7c708Swdenk There are common interrupt_init() and timer_interrupt() 3837a8c7c708Swdenk for all PPC archs. interrupt_init() calls interrupt_init_cpu() 383811ccc33fSMarcel Ziswiler for CPU specific initialization. interrupt_init_cpu() 3839a8c7c708Swdenk should set decrementer_count to appropriate value. If 384011ccc33fSMarcel Ziswiler CPU resets decrementer automatically after interrupt 3841a8c7c708Swdenk (ppc4xx) it should set decrementer_count to zero. 384211ccc33fSMarcel Ziswiler timer_interrupt() calls timer_interrupt_cpu() for CPU 3843a8c7c708Swdenk specific handling. If board has watchdog / status_led 3844a8c7c708Swdenk / other_activity_monitor it works automatically from 3845a8c7c708Swdenk general timer_interrupt(). 3846a8c7c708Swdenk 3847c609719bSwdenk- General: 3848c609719bSwdenk 3849c609719bSwdenk In the target system modem support is enabled when a 3850c609719bSwdenk specific key (key combination) is pressed during 3851c609719bSwdenk power-on. Otherwise U-Boot will boot normally 385211ccc33fSMarcel Ziswiler (autoboot). The key_pressed() function is called from 3853c609719bSwdenk board_init(). Currently key_pressed() is a dummy 3854c609719bSwdenk function, returning 1 and thus enabling modem 3855c609719bSwdenk initialization. 3856c609719bSwdenk 3857c609719bSwdenk If there are no modem init strings in the 3858c609719bSwdenk environment, U-Boot proceed to autoboot; the 3859c609719bSwdenk previous output (banner, info printfs) will be 386011ccc33fSMarcel Ziswiler suppressed, though. 3861c609719bSwdenk 3862c609719bSwdenk See also: doc/README.Modem 3863c609719bSwdenk 38649660e442SHelmut RaigerBoard initialization settings: 38659660e442SHelmut Raiger------------------------------ 38669660e442SHelmut Raiger 38679660e442SHelmut RaigerDuring Initialization u-boot calls a number of board specific functions 38689660e442SHelmut Raigerto allow the preparation of board specific prerequisites, e.g. pin setup 38699660e442SHelmut Raigerbefore drivers are initialized. To enable these callbacks the 38709660e442SHelmut Raigerfollowing configuration macros have to be defined. Currently this is 38719660e442SHelmut Raigerarchitecture specific, so please check arch/your_architecture/lib/board.c 38729660e442SHelmut Raigertypically in board_init_f() and board_init_r(). 38739660e442SHelmut Raiger 38749660e442SHelmut Raiger- CONFIG_BOARD_EARLY_INIT_F: Call board_early_init_f() 38759660e442SHelmut Raiger- CONFIG_BOARD_EARLY_INIT_R: Call board_early_init_r() 38769660e442SHelmut Raiger- CONFIG_BOARD_LATE_INIT: Call board_late_init() 38779660e442SHelmut Raiger- CONFIG_BOARD_POSTCLK_INIT: Call board_postclk_init() 3878c609719bSwdenk 3879c609719bSwdenkConfiguration Settings: 3880c609719bSwdenk----------------------- 3881c609719bSwdenk 38824d1fd7f1SYork Sun- CONFIG_SYS_SUPPORT_64BIT_DATA: Defined automatically if compiled as 64-bit. 38834d1fd7f1SYork Sun Optionally it can be defined to support 64-bit memory commands. 38844d1fd7f1SYork Sun 38856d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_LONGHELP: Defined when you want long help messages included; 3886c609719bSwdenk undefine this when you're short of memory. 3887c609719bSwdenk 38882fb2604dSPeter Tyser- CONFIG_SYS_HELP_CMD_WIDTH: Defined when you want to override the default 38892fb2604dSPeter Tyser width of the commands listed in the 'help' command output. 38902fb2604dSPeter Tyser 38916d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PROMPT: This is what U-Boot prints on the console to 3892c609719bSwdenk prompt for user input. 3893c609719bSwdenk 38946d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CBSIZE: Buffer size for input from the Console 3895c609719bSwdenk 38966d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PBSIZE: Buffer size for Console output 3897c609719bSwdenk 38986d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAXARGS: max. Number of arguments accepted for monitor commands 3899c609719bSwdenk 39006d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BARGSIZE: Buffer size for Boot Arguments which are passed to 3901c609719bSwdenk the application (usually a Linux kernel) when it is 3902c609719bSwdenk booted 3903c609719bSwdenk 39046d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BAUDRATE_TABLE: 3905c609719bSwdenk List of legal baudrate settings for this board. 3906c609719bSwdenk 39076d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_INFO_QUIET 3908c609719bSwdenk Suppress display of console information at boot. 3909c609719bSwdenk 39106d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_IS_IN_ENV 3911c609719bSwdenk If the board specific function 3912c609719bSwdenk extern int overwrite_console (void); 3913c609719bSwdenk returns 1, the stdin, stderr and stdout are switched to the 3914c609719bSwdenk serial port, else the settings in the environment are used. 3915c609719bSwdenk 39166d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE 3917c609719bSwdenk Enable the call to overwrite_console(). 3918c609719bSwdenk 39196d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_ENV_OVERWRITE 3920c609719bSwdenk Enable overwrite of previous console environment settings. 3921c609719bSwdenk 39226d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEMTEST_START, CONFIG_SYS_MEMTEST_END: 3923c609719bSwdenk Begin and End addresses of the area used by the 3924c609719bSwdenk simple memory test. 3925c609719bSwdenk 39266d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_ALT_MEMTEST: 3927c609719bSwdenk Enable an alternate, more extensive memory test. 3928c609719bSwdenk 39296d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEMTEST_SCRATCH: 39305f535fe1Swdenk Scratch address used by the alternate memory test 39315f535fe1Swdenk You only need to set this if address zero isn't writeable 39325f535fe1Swdenk 39336d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEM_TOP_HIDE (PPC only): 39346d0f6bcfSJean-Christophe PLAGNIOL-VILLARD If CONFIG_SYS_MEM_TOP_HIDE is defined in the board config header, 393514f73ca6SStefan Roese this specified memory area will get subtracted from the top 393611ccc33fSMarcel Ziswiler (end) of RAM and won't get "touched" at all by U-Boot. By 393714f73ca6SStefan Roese fixing up gd->ram_size the Linux kernel should gets passed 393814f73ca6SStefan Roese the now "corrected" memory size and won't touch it either. 393914f73ca6SStefan Roese This should work for arch/ppc and arch/powerpc. Only Linux 39405e12e75dSStefan Roese board ports in arch/powerpc with bootwrapper support that 394114f73ca6SStefan Roese recalculate the memory size from the SDRAM controller setup 39425e12e75dSStefan Roese will have to get fixed in Linux additionally. 394314f73ca6SStefan Roese 394414f73ca6SStefan Roese This option can be used as a workaround for the 440EPx/GRx 394514f73ca6SStefan Roese CHIP 11 errata where the last 256 bytes in SDRAM shouldn't 394614f73ca6SStefan Roese be touched. 394714f73ca6SStefan Roese 394814f73ca6SStefan Roese WARNING: Please make sure that this value is a multiple of 394914f73ca6SStefan Roese the Linux page size (normally 4k). If this is not the case, 395014f73ca6SStefan Roese then the end address of the Linux memory will be located at a 395114f73ca6SStefan Roese non page size aligned address and this could cause major 395214f73ca6SStefan Roese problems. 395314f73ca6SStefan Roese 39546d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_LOADS_BAUD_CHANGE: 3955c609719bSwdenk Enable temporary baudrate change while serial download 3956c609719bSwdenk 39576d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SDRAM_BASE: 3958c609719bSwdenk Physical start address of SDRAM. _Must_ be 0 here. 3959c609719bSwdenk 39606d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MBIO_BASE: 3961c609719bSwdenk Physical start address of Motherboard I/O (if using a 3962c609719bSwdenk Cogent motherboard) 3963c609719bSwdenk 39646d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_BASE: 3965c609719bSwdenk Physical start address of Flash memory. 3966c609719bSwdenk 39676d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MONITOR_BASE: 3968c609719bSwdenk Physical start address of boot monitor code (set by 3969c609719bSwdenk make config files to be same as the text base address 397014d0a02aSWolfgang Denk (CONFIG_SYS_TEXT_BASE) used when linking) - same as 39716d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FLASH_BASE when booting from flash. 3972c609719bSwdenk 39736d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MONITOR_LEN: 39743b57fe0aSwdenk Size of memory reserved for monitor code, used to 39753b57fe0aSwdenk determine _at_compile_time_ (!) if the environment is 39763b57fe0aSwdenk embedded within the U-Boot image, or in a separate 39773b57fe0aSwdenk flash sector. 3978c609719bSwdenk 39796d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MALLOC_LEN: 3980c609719bSwdenk Size of DRAM reserved for malloc() use. 3981c609719bSwdenk 3982d59476b6SSimon Glass- CONFIG_SYS_MALLOC_F_LEN 3983d59476b6SSimon Glass Size of the malloc() pool for use before relocation. If 3984d59476b6SSimon Glass this is defined, then a very simple malloc() implementation 3985d59476b6SSimon Glass will become available before relocation. The address is just 3986d59476b6SSimon Glass below the global data, and the stack is moved down to make 3987d59476b6SSimon Glass space. 3988d59476b6SSimon Glass 3989d59476b6SSimon Glass This feature allocates regions with increasing addresses 3990d59476b6SSimon Glass within the region. calloc() is supported, but realloc() 3991d59476b6SSimon Glass is not available. free() is supported but does nothing. 3992d59476b6SSimon Glass The memory will be freed (or in fact just forgotton) when 3993d59476b6SSimon Glass U-Boot relocates itself. 3994d59476b6SSimon Glass 3995e7b14e9aSSimon Glass Pre-relocation malloc() is only supported on ARM and sandbox 399629afe9e6SSimon Glass at present but is fairly easy to enable for other archs. 399729afe9e6SSimon Glass 3998*38687ae6SSimon Glass- CONFIG_SYS_MALLOC_SIMPLE 3999*38687ae6SSimon Glass Provides a simple and small malloc() and calloc() for those 4000*38687ae6SSimon Glass boards which do not use the full malloc in SPL (which is 4001*38687ae6SSimon Glass enabled with CONFIG_SYS_SPL_MALLOC_START). 4002*38687ae6SSimon Glass 40036d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BOOTM_LEN: 400415940c9aSStefan Roese Normally compressed uImages are limited to an 400515940c9aSStefan Roese uncompressed size of 8 MBytes. If this is not enough, 40066d0f6bcfSJean-Christophe PLAGNIOL-VILLARD you can define CONFIG_SYS_BOOTM_LEN in your board config file 400715940c9aSStefan Roese to adjust this setting to your needs. 4008c609719bSwdenk 40096d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BOOTMAPSZ: 4010c609719bSwdenk Maximum size of memory mapped by the startup code of 4011c609719bSwdenk the Linux kernel; all data that must be processed by 40127d721e34SBartlomiej Sieka the Linux kernel (bd_info, boot arguments, FDT blob if 40137d721e34SBartlomiej Sieka used) must be put below this limit, unless "bootm_low" 40141bce2aebSRobert P. J. Day environment variable is defined and non-zero. In such case 40157d721e34SBartlomiej Sieka all data for the Linux kernel must be between "bootm_low" 4016c3624e6eSGrant Likely and "bootm_low" + CONFIG_SYS_BOOTMAPSZ. The environment 4017c3624e6eSGrant Likely variable "bootm_mapsize" will override the value of 4018c3624e6eSGrant Likely CONFIG_SYS_BOOTMAPSZ. If CONFIG_SYS_BOOTMAPSZ is undefined, 4019c3624e6eSGrant Likely then the value in "bootm_size" will be used instead. 4020c609719bSwdenk 4021fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_RAMDISK_HIGH: 4022fca43cc8SJohn Rigby Enable initrd_high functionality. If defined then the 4023fca43cc8SJohn Rigby initrd_high feature is enabled and the bootm ramdisk subcommand 4024fca43cc8SJohn Rigby is enabled. 4025fca43cc8SJohn Rigby 4026fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_GET_CMDLINE: 4027fca43cc8SJohn Rigby Enables allocating and saving kernel cmdline in space between 4028fca43cc8SJohn Rigby "bootm_low" and "bootm_low" + BOOTMAPSZ. 4029fca43cc8SJohn Rigby 4030fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_GET_KBD: 4031fca43cc8SJohn Rigby Enables allocating and saving a kernel copy of the bd_info in 4032fca43cc8SJohn Rigby space between "bootm_low" and "bootm_low" + BOOTMAPSZ. 4033fca43cc8SJohn Rigby 40346d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAX_FLASH_BANKS: 4035c609719bSwdenk Max number of Flash memory banks 4036c609719bSwdenk 40376d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAX_FLASH_SECT: 4038c609719bSwdenk Max number of sectors on a Flash chip 4039c609719bSwdenk 40406d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_ERASE_TOUT: 4041c609719bSwdenk Timeout for Flash erase operations (in ms) 4042c609719bSwdenk 40436d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_WRITE_TOUT: 4044c609719bSwdenk Timeout for Flash write operations (in ms) 4045c609719bSwdenk 40466d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_LOCK_TOUT 40478564acf9Swdenk Timeout for Flash set sector lock bit operation (in ms) 40488564acf9Swdenk 40496d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_UNLOCK_TOUT 40508564acf9Swdenk Timeout for Flash clear lock bits operation (in ms) 40518564acf9Swdenk 40526d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_PROTECTION 40538564acf9Swdenk If defined, hardware flash sectors protection is used 40548564acf9Swdenk instead of U-Boot software protection. 40558564acf9Swdenk 40566d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DIRECT_FLASH_TFTP: 4057c609719bSwdenk 4058c609719bSwdenk Enable TFTP transfers directly to flash memory; 4059c609719bSwdenk without this option such a download has to be 4060c609719bSwdenk performed in two steps: (1) download to RAM, and (2) 4061c609719bSwdenk copy from RAM to flash. 4062c609719bSwdenk 4063c609719bSwdenk The two-step approach is usually more reliable, since 4064c609719bSwdenk you can check if the download worked before you erase 406511ccc33fSMarcel Ziswiler the flash, but in some situations (when system RAM is 406611ccc33fSMarcel Ziswiler too limited to allow for a temporary copy of the 4067c609719bSwdenk downloaded image) this option may be very useful. 4068c609719bSwdenk 40696d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_CFI: 4070c609719bSwdenk Define if the flash driver uses extra elements in the 40715653fc33Swdenk common flash structure for storing flash geometry. 40725653fc33Swdenk 407300b1883aSJean-Christophe PLAGNIOL-VILLARD- CONFIG_FLASH_CFI_DRIVER 40745653fc33Swdenk This option also enables the building of the cfi_flash driver 40755653fc33Swdenk in the drivers directory 407653cf9435Sstroese 407791809ed5SPiotr Ziecik- CONFIG_FLASH_CFI_MTD 407891809ed5SPiotr Ziecik This option enables the building of the cfi_mtd driver 407991809ed5SPiotr Ziecik in the drivers directory. The driver exports CFI flash 408091809ed5SPiotr Ziecik to the MTD layer. 408191809ed5SPiotr Ziecik 40826d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_USE_BUFFER_WRITE 408396ef831fSGuennadi Liakhovetski Use buffered writes to flash. 408496ef831fSGuennadi Liakhovetski 408596ef831fSGuennadi Liakhovetski- CONFIG_FLASH_SPANSION_S29WS_N 408696ef831fSGuennadi Liakhovetski s29ws-n MirrorBit flash has non-standard addresses for buffered 408796ef831fSGuennadi Liakhovetski write commands. 408896ef831fSGuennadi Liakhovetski 40896d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_QUIET_TEST 40905568e613SStefan Roese If this option is defined, the common CFI flash doesn't 40915568e613SStefan Roese print it's warning upon not recognized FLASH banks. This 40925568e613SStefan Roese is useful, if some of the configured banks are only 40935568e613SStefan Roese optionally available. 40945568e613SStefan Roese 40959a042e9cSJerry Van Baren- CONFIG_FLASH_SHOW_PROGRESS 40969a042e9cSJerry Van Baren If defined (must be an integer), print out countdown 40979a042e9cSJerry Van Baren digits and dots. Recommended value: 45 (9..1) for 80 40989a042e9cSJerry Van Baren column displays, 15 (3..1) for 40 column displays. 40999a042e9cSJerry Van Baren 4100352ef3f1SStefan Roese- CONFIG_FLASH_VERIFY 4101352ef3f1SStefan Roese If defined, the content of the flash (destination) is compared 4102352ef3f1SStefan Roese against the source after the write operation. An error message 4103352ef3f1SStefan Roese will be printed when the contents are not identical. 4104352ef3f1SStefan Roese Please note that this option is useless in nearly all cases, 4105352ef3f1SStefan Roese since such flash programming errors usually are detected earlier 4106352ef3f1SStefan Roese while unprotecting/erasing/programming. Please only enable 4107352ef3f1SStefan Roese this option if you really know what you are doing. 4108352ef3f1SStefan Roese 41096d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_RX_ETH_BUFFER: 411011ccc33fSMarcel Ziswiler Defines the number of Ethernet receive buffers. On some 411111ccc33fSMarcel Ziswiler Ethernet controllers it is recommended to set this value 411253cf9435Sstroese to 8 or even higher (EEPRO100 or 405 EMAC), since all 411353cf9435Sstroese buffers can be full shortly after enabling the interface 411411ccc33fSMarcel Ziswiler on high Ethernet traffic. 411553cf9435Sstroese Defaults to 4 if not defined. 4116c609719bSwdenk 4117ea882bafSWolfgang Denk- CONFIG_ENV_MAX_ENTRIES 4118ea882bafSWolfgang Denk 4119ea882bafSWolfgang Denk Maximum number of entries in the hash table that is used 4120ea882bafSWolfgang Denk internally to store the environment settings. The default 4121ea882bafSWolfgang Denk setting is supposed to be generous and should work in most 4122ea882bafSWolfgang Denk cases. This setting can be used to tune behaviour; see 4123ea882bafSWolfgang Denk lib/hashtable.c for details. 4124ea882bafSWolfgang Denk 41252598090bSJoe Hershberger- CONFIG_ENV_FLAGS_LIST_DEFAULT 41262598090bSJoe Hershberger- CONFIG_ENV_FLAGS_LIST_STATIC 41271bce2aebSRobert P. J. Day Enable validation of the values given to environment variables when 41282598090bSJoe Hershberger calling env set. Variables can be restricted to only decimal, 41292598090bSJoe Hershberger hexadecimal, or boolean. If CONFIG_CMD_NET is also defined, 41302598090bSJoe Hershberger the variables can also be restricted to IP address or MAC address. 41312598090bSJoe Hershberger 41322598090bSJoe Hershberger The format of the list is: 41332598090bSJoe Hershberger type_attribute = [s|d|x|b|i|m] 4134267541f7SJoe Hershberger access_atribute = [a|r|o|c] 4135267541f7SJoe Hershberger attributes = type_attribute[access_atribute] 41362598090bSJoe Hershberger entry = variable_name[:attributes] 41372598090bSJoe Hershberger list = entry[,list] 41382598090bSJoe Hershberger 41392598090bSJoe Hershberger The type attributes are: 41402598090bSJoe Hershberger s - String (default) 41412598090bSJoe Hershberger d - Decimal 41422598090bSJoe Hershberger x - Hexadecimal 41432598090bSJoe Hershberger b - Boolean ([1yYtT|0nNfF]) 41442598090bSJoe Hershberger i - IP address 41452598090bSJoe Hershberger m - MAC address 41462598090bSJoe Hershberger 4147267541f7SJoe Hershberger The access attributes are: 4148267541f7SJoe Hershberger a - Any (default) 4149267541f7SJoe Hershberger r - Read-only 4150267541f7SJoe Hershberger o - Write-once 4151267541f7SJoe Hershberger c - Change-default 4152267541f7SJoe Hershberger 41532598090bSJoe Hershberger - CONFIG_ENV_FLAGS_LIST_DEFAULT 41542598090bSJoe Hershberger Define this to a list (string) to define the ".flags" 41552598090bSJoe Hershberger envirnoment variable in the default or embedded environment. 41562598090bSJoe Hershberger 41572598090bSJoe Hershberger - CONFIG_ENV_FLAGS_LIST_STATIC 41582598090bSJoe Hershberger Define this to a list (string) to define validation that 41592598090bSJoe Hershberger should be done if an entry is not found in the ".flags" 41602598090bSJoe Hershberger environment variable. To override a setting in the static 41612598090bSJoe Hershberger list, simply add an entry for the same variable name to the 41622598090bSJoe Hershberger ".flags" variable. 41632598090bSJoe Hershberger 4164267541f7SJoe Hershberger- CONFIG_ENV_ACCESS_IGNORE_FORCE 4165267541f7SJoe Hershberger If defined, don't allow the -f switch to env set override variable 4166267541f7SJoe Hershberger access flags. 4167267541f7SJoe Hershberger 41685c1a7ea6SSimon Glass- CONFIG_SYS_GENERIC_BOARD 41695c1a7ea6SSimon Glass This selects the architecture-generic board system instead of the 41705c1a7ea6SSimon Glass architecture-specific board files. It is intended to move boards 41715c1a7ea6SSimon Glass to this new framework over time. Defining this will disable the 41725c1a7ea6SSimon Glass arch/foo/lib/board.c file and use common/board_f.c and 41735c1a7ea6SSimon Glass common/board_r.c instead. To use this option your architecture 41745c1a7ea6SSimon Glass must support it (i.e. must define __HAVE_ARCH_GENERIC_BOARD in 41755c1a7ea6SSimon Glass its config.mk file). If you find problems enabling this option on 41765c1a7ea6SSimon Glass your board please report the problem and send patches! 41775c1a7ea6SSimon Glass 41780b1b60c7SLokesh Vutla- CONFIG_OMAP_PLATFORM_RESET_TIME_MAX_USEC (OMAP only) 41790b1b60c7SLokesh Vutla This is set by OMAP boards for the max time that reset should 41800b1b60c7SLokesh Vutla be asserted. See doc/README.omap-reset-time for details on how 41810b1b60c7SLokesh Vutla the value can be calulated on a given board. 4182632efa74SSimon Glass 41830d296cc2SGabe Black- CONFIG_USE_STDINT 41840d296cc2SGabe Black If stdint.h is available with your toolchain you can define this 41850d296cc2SGabe Black option to enable it. You can provide option 'USE_STDINT=1' when 41860d296cc2SGabe Black building U-Boot to enable this. 41870d296cc2SGabe Black 4188c609719bSwdenkThe following definitions that deal with the placement and management 4189c609719bSwdenkof environment data (variable area); in general, we support the 4190c609719bSwdenkfollowing configurations: 4191c609719bSwdenk 4192c3eb3fe4SMike Frysinger- CONFIG_BUILD_ENVCRC: 4193c3eb3fe4SMike Frysinger 4194c3eb3fe4SMike Frysinger Builds up envcrc with the target environment so that external utils 4195c3eb3fe4SMike Frysinger may easily extract it and embed it in final U-Boot images. 4196c3eb3fe4SMike Frysinger 41975a1aceb0SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_FLASH: 4198c609719bSwdenk 4199c609719bSwdenk Define this if the environment is in flash memory. 4200c609719bSwdenk 4201c609719bSwdenk a) The environment occupies one whole flash sector, which is 4202c609719bSwdenk "embedded" in the text segment with the U-Boot code. This 4203c609719bSwdenk happens usually with "bottom boot sector" or "top boot 4204c609719bSwdenk sector" type flash chips, which have several smaller 4205c609719bSwdenk sectors at the start or the end. For instance, such a 4206c609719bSwdenk layout can have sector sizes of 8, 2x4, 16, Nx32 kB. In 4207c609719bSwdenk such a case you would place the environment in one of the 4208c609719bSwdenk 4 kB sectors - with U-Boot code before and after it. With 4209c609719bSwdenk "top boot sector" type flash chips, you would put the 4210c609719bSwdenk environment in one of the last sectors, leaving a gap 4211c609719bSwdenk between U-Boot and the environment. 4212c609719bSwdenk 42130e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 4214c609719bSwdenk 4215c609719bSwdenk Offset of environment data (variable area) to the 4216c609719bSwdenk beginning of flash memory; for instance, with bottom boot 4217c609719bSwdenk type flash chips the second sector can be used: the offset 4218c609719bSwdenk for this sector is given here. 4219c609719bSwdenk 42206d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_OFFSET is used relative to CONFIG_SYS_FLASH_BASE. 4221c609719bSwdenk 42220e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 4223c609719bSwdenk 4224c609719bSwdenk This is just another way to specify the start address of 4225c609719bSwdenk the flash sector containing the environment (instead of 42260e8d1586SJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_OFFSET). 4227c609719bSwdenk 42280e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SECT_SIZE: 4229c609719bSwdenk 4230c609719bSwdenk Size of the sector containing the environment. 4231c609719bSwdenk 4232c609719bSwdenk 4233c609719bSwdenk b) Sometimes flash chips have few, equal sized, BIG sectors. 4234c609719bSwdenk In such a case you don't want to spend a whole sector for 4235c609719bSwdenk the environment. 4236c609719bSwdenk 42370e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 4238c609719bSwdenk 42395a1aceb0SJean-Christophe PLAGNIOL-VILLARD If you use this in combination with CONFIG_ENV_IS_IN_FLASH 42400e8d1586SJean-Christophe PLAGNIOL-VILLARD and CONFIG_ENV_SECT_SIZE, you can specify to use only a part 4241c609719bSwdenk of this flash sector for the environment. This saves 4242c609719bSwdenk memory for the RAM copy of the environment. 4243c609719bSwdenk 4244c609719bSwdenk It may also save flash memory if you decide to use this 4245c609719bSwdenk when your environment is "embedded" within U-Boot code, 4246c609719bSwdenk since then the remainder of the flash sector could be used 4247c609719bSwdenk for U-Boot code. It should be pointed out that this is 4248c609719bSwdenk STRONGLY DISCOURAGED from a robustness point of view: 4249c609719bSwdenk updating the environment in flash makes it always 4250c609719bSwdenk necessary to erase the WHOLE sector. If something goes 4251c609719bSwdenk wrong before the contents has been restored from a copy in 4252c609719bSwdenk RAM, your target system will be dead. 4253c609719bSwdenk 42540e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR_REDUND 42550e8d1586SJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_SIZE_REDUND 4256c609719bSwdenk 4257c609719bSwdenk These settings describe a second storage area used to hold 425811ccc33fSMarcel Ziswiler a redundant copy of the environment data, so that there is 42593e38691eSwdenk a valid backup copy in case there is a power failure during 4260c609719bSwdenk a "saveenv" operation. 4261c609719bSwdenk 4262c609719bSwdenkBE CAREFUL! Any changes to the flash layout, and some changes to the 4263c609719bSwdenksource code will make it necessary to adapt <board>/u-boot.lds* 4264c609719bSwdenkaccordingly! 4265c609719bSwdenk 4266c609719bSwdenk 42679314cee6SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_NVRAM: 4268c609719bSwdenk 4269c609719bSwdenk Define this if you have some non-volatile memory device 4270c609719bSwdenk (NVRAM, battery buffered SRAM) which you want to use for the 4271c609719bSwdenk environment. 4272c609719bSwdenk 42730e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 42740e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 4275c609719bSwdenk 427611ccc33fSMarcel Ziswiler These two #defines are used to determine the memory area you 4277c609719bSwdenk want to use for environment. It is assumed that this memory 4278c609719bSwdenk can just be read and written to, without any special 4279c609719bSwdenk provision. 4280c609719bSwdenk 4281c609719bSwdenkBE CAREFUL! The first access to the environment happens quite early 4282c609719bSwdenkin U-Boot initalization (when we try to get the setting of for the 428311ccc33fSMarcel Ziswilerconsole baudrate). You *MUST* have mapped your NVRAM area then, or 4284c609719bSwdenkU-Boot will hang. 4285c609719bSwdenk 4286c609719bSwdenkPlease note that even with NVRAM we still use a copy of the 4287c609719bSwdenkenvironment in RAM: we could work on NVRAM directly, but we want to 4288c609719bSwdenkkeep settings there always unmodified except somebody uses "saveenv" 4289c609719bSwdenkto save the current settings. 4290c609719bSwdenk 4291c609719bSwdenk 4292bb1f8b4fSJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_EEPROM: 4293c609719bSwdenk 4294c609719bSwdenk Use this if you have an EEPROM or similar serial access 4295c609719bSwdenk device and a driver for it. 4296c609719bSwdenk 42970e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 42980e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 4299c609719bSwdenk 4300c609719bSwdenk These two #defines specify the offset and size of the 4301c609719bSwdenk environment area within the total memory of your EEPROM. 4302c609719bSwdenk 43036d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR: 4304c609719bSwdenk If defined, specified the chip address of the EEPROM device. 4305c609719bSwdenk The default address is zero. 4306c609719bSwdenk 43076d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_PAGE_WRITE_BITS: 4308c609719bSwdenk If defined, the number of bits used to address bytes in a 4309c609719bSwdenk single page in the EEPROM device. A 64 byte page, for example 4310c609719bSwdenk would require six bits. 4311c609719bSwdenk 43126d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS: 4313c609719bSwdenk If defined, the number of milliseconds to delay between 4314c609719bSwdenk page writes. The default is zero milliseconds. 4315c609719bSwdenk 43166d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR_LEN: 4317c609719bSwdenk The length in bytes of the EEPROM memory array address. Note 4318c609719bSwdenk that this is NOT the chip address length! 4319c609719bSwdenk 43206d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW: 43215cf91d6bSwdenk EEPROM chips that implement "address overflow" are ones 43225cf91d6bSwdenk like Catalyst 24WC04/08/16 which has 9/10/11 bits of 43235cf91d6bSwdenk address and the extra bits end up in the "chip address" bit 43245cf91d6bSwdenk slots. This makes a 24WC08 (1Kbyte) chip look like four 256 43255cf91d6bSwdenk byte chips. 43265cf91d6bSwdenk 43275cf91d6bSwdenk Note that we consider the length of the address field to 43285cf91d6bSwdenk still be one byte because the extra address bits are hidden 43295cf91d6bSwdenk in the chip address. 43305cf91d6bSwdenk 43316d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_SIZE: 4332c609719bSwdenk The size in bytes of the EEPROM device. 4333c609719bSwdenk 4334548738b4SHeiko Schocher - CONFIG_ENV_EEPROM_IS_ON_I2C 4335548738b4SHeiko Schocher define this, if you have I2C and SPI activated, and your 4336548738b4SHeiko Schocher EEPROM, which holds the environment, is on the I2C bus. 4337548738b4SHeiko Schocher 4338548738b4SHeiko Schocher - CONFIG_I2C_ENV_EEPROM_BUS 4339548738b4SHeiko Schocher if you have an Environment on an EEPROM reached over 4340548738b4SHeiko Schocher I2C muxes, you can define here, how to reach this 4341548738b4SHeiko Schocher EEPROM. For example: 4342548738b4SHeiko Schocher 4343ea818dbbSHeiko Schocher #define CONFIG_I2C_ENV_EEPROM_BUS 1 4344548738b4SHeiko Schocher 4345548738b4SHeiko Schocher EEPROM which holds the environment, is reached over 4346548738b4SHeiko Schocher a pca9547 i2c mux with address 0x70, channel 3. 4347c609719bSwdenk 4348057c849cSJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_DATAFLASH: 43495779d8d9Swdenk 43505779d8d9Swdenk Define this if you have a DataFlash memory device which you 43515779d8d9Swdenk want to use for the environment. 43525779d8d9Swdenk 43530e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 43540e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 43550e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 43565779d8d9Swdenk 43575779d8d9Swdenk These three #defines specify the offset and size of the 43585779d8d9Swdenk environment area within the total memory of your DataFlash placed 43595779d8d9Swdenk at the specified address. 43605779d8d9Swdenk 4361bd83b592SWu, Josh- CONFIG_ENV_IS_IN_SPI_FLASH: 4362bd83b592SWu, Josh 4363bd83b592SWu, Josh Define this if you have a SPI Flash memory device which you 4364bd83b592SWu, Josh want to use for the environment. 4365bd83b592SWu, Josh 4366bd83b592SWu, Josh - CONFIG_ENV_OFFSET: 4367bd83b592SWu, Josh - CONFIG_ENV_SIZE: 4368bd83b592SWu, Josh 4369bd83b592SWu, Josh These two #defines specify the offset and size of the 4370bd83b592SWu, Josh environment area within the SPI Flash. CONFIG_ENV_OFFSET must be 4371bd83b592SWu, Josh aligned to an erase sector boundary. 4372bd83b592SWu, Josh 4373bd83b592SWu, Josh - CONFIG_ENV_SECT_SIZE: 4374bd83b592SWu, Josh 4375bd83b592SWu, Josh Define the SPI flash's sector size. 4376bd83b592SWu, Josh 4377bd83b592SWu, Josh - CONFIG_ENV_OFFSET_REDUND (optional): 4378bd83b592SWu, Josh 4379bd83b592SWu, Josh This setting describes a second storage area of CONFIG_ENV_SIZE 4380bd83b592SWu, Josh size used to hold a redundant copy of the environment data, so 4381bd83b592SWu, Josh that there is a valid backup copy in case there is a power failure 4382bd83b592SWu, Josh during a "saveenv" operation. CONFIG_ENV_OFFSET_RENDUND must be 4383bd83b592SWu, Josh aligned to an erase sector boundary. 4384bd83b592SWu, Josh 4385bd83b592SWu, Josh - CONFIG_ENV_SPI_BUS (optional): 4386bd83b592SWu, Josh - CONFIG_ENV_SPI_CS (optional): 4387bd83b592SWu, Josh 4388bd83b592SWu, Josh Define the SPI bus and chip select. If not defined they will be 0. 4389bd83b592SWu, Josh 4390bd83b592SWu, Josh - CONFIG_ENV_SPI_MAX_HZ (optional): 4391bd83b592SWu, Josh 4392bd83b592SWu, Josh Define the SPI max work clock. If not defined then use 1MHz. 4393bd83b592SWu, Josh 4394bd83b592SWu, Josh - CONFIG_ENV_SPI_MODE (optional): 4395bd83b592SWu, Josh 4396bd83b592SWu, Josh Define the SPI work mode. If not defined then use SPI_MODE_3. 4397bd83b592SWu, Josh 43980a85a9e7SLiu Gang- CONFIG_ENV_IS_IN_REMOTE: 43990a85a9e7SLiu Gang 44000a85a9e7SLiu Gang Define this if you have a remote memory space which you 44010a85a9e7SLiu Gang want to use for the local device's environment. 44020a85a9e7SLiu Gang 44030a85a9e7SLiu Gang - CONFIG_ENV_ADDR: 44040a85a9e7SLiu Gang - CONFIG_ENV_SIZE: 44050a85a9e7SLiu Gang 44060a85a9e7SLiu Gang These two #defines specify the address and size of the 44070a85a9e7SLiu Gang environment area within the remote memory space. The 44080a85a9e7SLiu Gang local device can get the environment from remote memory 4409fc54c7faSLiu Gang space by SRIO or PCIE links. 44100a85a9e7SLiu Gang 44110a85a9e7SLiu GangBE CAREFUL! For some special cases, the local device can not use 44120a85a9e7SLiu Gang"saveenv" command. For example, the local device will get the 4413fc54c7faSLiu Gangenvironment stored in a remote NOR flash by SRIO or PCIE link, 4414fc54c7faSLiu Gangbut it can not erase, write this NOR flash by SRIO or PCIE interface. 44150a85a9e7SLiu Gang 441651bfee19SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_NAND: 441713a5695bSwdenk 441813a5695bSwdenk Define this if you have a NAND device which you want to use 441913a5695bSwdenk for the environment. 442013a5695bSwdenk 44210e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 44220e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 442313a5695bSwdenk 442413a5695bSwdenk These two #defines specify the offset and size of the environment 4425fdd813deSScott Wood area within the first NAND device. CONFIG_ENV_OFFSET must be 4426fdd813deSScott Wood aligned to an erase block boundary. 44275779d8d9Swdenk 4428fdd813deSScott Wood - CONFIG_ENV_OFFSET_REDUND (optional): 4429e443c944SMarkus Klotzbuecher 44300e8d1586SJean-Christophe PLAGNIOL-VILLARD This setting describes a second storage area of CONFIG_ENV_SIZE 4431fdd813deSScott Wood size used to hold a redundant copy of the environment data, so 4432fdd813deSScott Wood that there is a valid backup copy in case there is a power failure 4433fdd813deSScott Wood during a "saveenv" operation. CONFIG_ENV_OFFSET_RENDUND must be 4434fdd813deSScott Wood aligned to an erase block boundary. 4435e443c944SMarkus Klotzbuecher 4436fdd813deSScott Wood - CONFIG_ENV_RANGE (optional): 4437fdd813deSScott Wood 4438fdd813deSScott Wood Specifies the length of the region in which the environment 4439fdd813deSScott Wood can be written. This should be a multiple of the NAND device's 4440fdd813deSScott Wood block size. Specifying a range with more erase blocks than 4441fdd813deSScott Wood are needed to hold CONFIG_ENV_SIZE allows bad blocks within 4442fdd813deSScott Wood the range to be avoided. 4443fdd813deSScott Wood 4444fdd813deSScott Wood - CONFIG_ENV_OFFSET_OOB (optional): 4445fdd813deSScott Wood 4446fdd813deSScott Wood Enables support for dynamically retrieving the offset of the 4447fdd813deSScott Wood environment from block zero's out-of-band data. The 4448fdd813deSScott Wood "nand env.oob" command can be used to record this offset. 4449fdd813deSScott Wood Currently, CONFIG_ENV_OFFSET_REDUND is not supported when 4450fdd813deSScott Wood using CONFIG_ENV_OFFSET_OOB. 4451e443c944SMarkus Klotzbuecher 4452b74ab737SGuennadi Liakhovetski- CONFIG_NAND_ENV_DST 4453b74ab737SGuennadi Liakhovetski 4454b74ab737SGuennadi Liakhovetski Defines address in RAM to which the nand_spl code should copy the 4455b74ab737SGuennadi Liakhovetski environment. If redundant environment is used, it will be copied to 4456b74ab737SGuennadi Liakhovetski CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE. 4457b74ab737SGuennadi Liakhovetski 44582b74433fSJoe Hershberger- CONFIG_ENV_IS_IN_UBI: 44592b74433fSJoe Hershberger 44602b74433fSJoe Hershberger Define this if you have an UBI volume that you want to use for the 44612b74433fSJoe Hershberger environment. This has the benefit of wear-leveling the environment 44622b74433fSJoe Hershberger accesses, which is important on NAND. 44632b74433fSJoe Hershberger 44642b74433fSJoe Hershberger - CONFIG_ENV_UBI_PART: 44652b74433fSJoe Hershberger 44662b74433fSJoe Hershberger Define this to a string that is the mtd partition containing the UBI. 44672b74433fSJoe Hershberger 44682b74433fSJoe Hershberger - CONFIG_ENV_UBI_VOLUME: 44692b74433fSJoe Hershberger 44702b74433fSJoe Hershberger Define this to the name of the volume that you want to store the 44712b74433fSJoe Hershberger environment in. 44722b74433fSJoe Hershberger 4473785881f7SJoe Hershberger - CONFIG_ENV_UBI_VOLUME_REDUND: 4474785881f7SJoe Hershberger 4475785881f7SJoe Hershberger Define this to the name of another volume to store a second copy of 4476785881f7SJoe Hershberger the environment in. This will enable redundant environments in UBI. 4477785881f7SJoe Hershberger It is assumed that both volumes are in the same MTD partition. 4478785881f7SJoe Hershberger 44792b74433fSJoe Hershberger - CONFIG_UBI_SILENCE_MSG 44802b74433fSJoe Hershberger - CONFIG_UBIFS_SILENCE_MSG 44812b74433fSJoe Hershberger 44822b74433fSJoe Hershberger You will probably want to define these to avoid a really noisy system 44832b74433fSJoe Hershberger when storing the env in UBI. 44842b74433fSJoe Hershberger 4485d1db76f1SWu, Josh- CONFIG_ENV_IS_IN_FAT: 4486d1db76f1SWu, Josh Define this if you want to use the FAT file system for the environment. 4487d1db76f1SWu, Josh 4488d1db76f1SWu, Josh - FAT_ENV_INTERFACE: 4489d1db76f1SWu, Josh 4490d1db76f1SWu, Josh Define this to a string that is the name of the block device. 4491d1db76f1SWu, Josh 4492d1db76f1SWu, Josh - FAT_ENV_DEV_AND_PART: 4493d1db76f1SWu, Josh 4494d1db76f1SWu, Josh Define this to a string to specify the partition of the device. It can 4495d1db76f1SWu, Josh be as following: 4496d1db76f1SWu, Josh 4497d1db76f1SWu, Josh "D:P", "D:0", "D", "D:" or "D:auto" (D, P are integers. And P >= 1) 4498d1db76f1SWu, Josh - "D:P": device D partition P. Error occurs if device D has no 4499d1db76f1SWu, Josh partition table. 4500d1db76f1SWu, Josh - "D:0": device D. 4501d1db76f1SWu, Josh - "D" or "D:": device D partition 1 if device D has partition 4502d1db76f1SWu, Josh table, or the whole device D if has no partition 4503d1db76f1SWu, Josh table. 4504d1db76f1SWu, Josh - "D:auto": first partition in device D with bootable flag set. 4505d1db76f1SWu, Josh If none, first valid paratition in device D. If no 4506d1db76f1SWu, Josh partition table then means device D. 4507d1db76f1SWu, Josh 4508d1db76f1SWu, Josh - FAT_ENV_FILE: 4509d1db76f1SWu, Josh 4510d1db76f1SWu, Josh It's a string of the FAT file name. This file use to store the 4511d1db76f1SWu, Josh envrionment. 4512d1db76f1SWu, Josh 4513d1db76f1SWu, Josh - CONFIG_FAT_WRITE: 4514d1db76f1SWu, Josh This should be defined. Otherwise it cannot save the envrionment file. 4515d1db76f1SWu, Josh 451606e4ae5fSStephen Warren- CONFIG_ENV_IS_IN_MMC: 451706e4ae5fSStephen Warren 451806e4ae5fSStephen Warren Define this if you have an MMC device which you want to use for the 451906e4ae5fSStephen Warren environment. 452006e4ae5fSStephen Warren 452106e4ae5fSStephen Warren - CONFIG_SYS_MMC_ENV_DEV: 452206e4ae5fSStephen Warren 452306e4ae5fSStephen Warren Specifies which MMC device the environment is stored in. 452406e4ae5fSStephen Warren 452506e4ae5fSStephen Warren - CONFIG_SYS_MMC_ENV_PART (optional): 452606e4ae5fSStephen Warren 452706e4ae5fSStephen Warren Specifies which MMC partition the environment is stored in. If not 452806e4ae5fSStephen Warren set, defaults to partition 0, the user area. Common values might be 452906e4ae5fSStephen Warren 1 (first MMC boot partition), 2 (second MMC boot partition). 453006e4ae5fSStephen Warren 453106e4ae5fSStephen Warren - CONFIG_ENV_OFFSET: 453206e4ae5fSStephen Warren - CONFIG_ENV_SIZE: 453306e4ae5fSStephen Warren 453406e4ae5fSStephen Warren These two #defines specify the offset and size of the environment 453506e4ae5fSStephen Warren area within the specified MMC device. 453606e4ae5fSStephen Warren 45375c088ee8SStephen Warren If offset is positive (the usual case), it is treated as relative to 45385c088ee8SStephen Warren the start of the MMC partition. If offset is negative, it is treated 45395c088ee8SStephen Warren as relative to the end of the MMC partition. This can be useful if 45405c088ee8SStephen Warren your board may be fitted with different MMC devices, which have 45415c088ee8SStephen Warren different sizes for the MMC partitions, and you always want the 45425c088ee8SStephen Warren environment placed at the very end of the partition, to leave the 45435c088ee8SStephen Warren maximum possible space before it, to store other data. 45445c088ee8SStephen Warren 454506e4ae5fSStephen Warren These two values are in units of bytes, but must be aligned to an 454606e4ae5fSStephen Warren MMC sector boundary. 454706e4ae5fSStephen Warren 454806e4ae5fSStephen Warren - CONFIG_ENV_OFFSET_REDUND (optional): 454906e4ae5fSStephen Warren 455006e4ae5fSStephen Warren Specifies a second storage area, of CONFIG_ENV_SIZE size, used to 455106e4ae5fSStephen Warren hold a redundant copy of the environment data. This provides a 455206e4ae5fSStephen Warren valid backup copy in case the other copy is corrupted, e.g. due 455306e4ae5fSStephen Warren to a power failure during a "saveenv" operation. 455406e4ae5fSStephen Warren 45555c088ee8SStephen Warren This value may also be positive or negative; this is handled in the 45565c088ee8SStephen Warren same way as CONFIG_ENV_OFFSET. 45575c088ee8SStephen Warren 455806e4ae5fSStephen Warren This value is also in units of bytes, but must also be aligned to 455906e4ae5fSStephen Warren an MMC sector boundary. 456006e4ae5fSStephen Warren 456106e4ae5fSStephen Warren - CONFIG_ENV_SIZE_REDUND (optional): 456206e4ae5fSStephen Warren 456306e4ae5fSStephen Warren This value need not be set, even when CONFIG_ENV_OFFSET_REDUND is 456406e4ae5fSStephen Warren set. If this value is set, it must be set to the same value as 456506e4ae5fSStephen Warren CONFIG_ENV_SIZE. 456606e4ae5fSStephen Warren 45676d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPI_INIT_OFFSET 4568c609719bSwdenk 4569c609719bSwdenk Defines offset to the initial SPI buffer area in DPRAM. The 4570c609719bSwdenk area is used at an early stage (ROM part) if the environment 4571c609719bSwdenk is configured to reside in the SPI EEPROM: We need a 520 byte 4572c609719bSwdenk scratch DPRAM area. It is used between the two initialization 4573c609719bSwdenk calls (spi_init_f() and spi_init_r()). A value of 0xB00 seems 4574c609719bSwdenk to be a good choice since it makes it far enough from the 4575c609719bSwdenk start of the data area as well as from the stack pointer. 4576c609719bSwdenk 4577e881cb56SBruce AdlerPlease note that the environment is read-only until the monitor 4578c609719bSwdenkhas been relocated to RAM and a RAM copy of the environment has been 4579cdb74977SWolfgang Denkcreated; also, when using EEPROM you will have to use getenv_f() 4580c609719bSwdenkuntil then to read environment variables. 4581c609719bSwdenk 458285ec0bccSwdenkThe environment is protected by a CRC32 checksum. Before the monitor 458385ec0bccSwdenkis relocated into RAM, as a result of a bad CRC you will be working 458485ec0bccSwdenkwith the compiled-in default environment - *silently*!!! [This is 458585ec0bccSwdenknecessary, because the first environment variable we need is the 458685ec0bccSwdenk"baudrate" setting for the console - if we have a bad CRC, we don't 458785ec0bccSwdenkhave any device yet where we could complain.] 4588c609719bSwdenk 4589c609719bSwdenkNote: once the monitor has been relocated, then it will complain if 4590c609719bSwdenkthe default environment is used; a new CRC is computed as soon as you 459185ec0bccSwdenkuse the "saveenv" command to store a valid environment. 4592c609719bSwdenk 45936d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FAULT_ECHO_LINK_DOWN: 4594fc3e2165Swdenk Echo the inverted Ethernet link state to the fault LED. 4595fc3e2165Swdenk 45966d0f6bcfSJean-Christophe PLAGNIOL-VILLARD Note: If this option is active, then CONFIG_SYS_FAULT_MII_ADDR 4597fc3e2165Swdenk also needs to be defined. 4598fc3e2165Swdenk 45996d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FAULT_MII_ADDR: 4600fc3e2165Swdenk MII address of the PHY to check for the Ethernet link state. 4601c609719bSwdenk 4602f5675aa5SRon Madrid- CONFIG_NS16550_MIN_FUNCTIONS: 4603f5675aa5SRon Madrid Define this if you desire to only have use of the NS16550_init 4604f5675aa5SRon Madrid and NS16550_putc functions for the serial driver located at 4605f5675aa5SRon Madrid drivers/serial/ns16550.c. This option is useful for saving 4606f5675aa5SRon Madrid space for already greatly restricted images, including but not 4607f5675aa5SRon Madrid limited to NAND_SPL configurations. 4608f5675aa5SRon Madrid 4609b2b92f53SSimon Glass- CONFIG_DISPLAY_BOARDINFO 4610b2b92f53SSimon Glass Display information about the board that U-Boot is running on 4611b2b92f53SSimon Glass when U-Boot starts up. The board function checkboard() is called 4612b2b92f53SSimon Glass to do this. 4613b2b92f53SSimon Glass 4614e2e3e2b1SSimon Glass- CONFIG_DISPLAY_BOARDINFO_LATE 4615e2e3e2b1SSimon Glass Similar to the previous option, but display this information 4616e2e3e2b1SSimon Glass later, once stdio is running and output goes to the LCD, if 4617e2e3e2b1SSimon Glass present. 4618e2e3e2b1SSimon Glass 4619feb85801SSascha Silbe- CONFIG_BOARD_SIZE_LIMIT: 4620feb85801SSascha Silbe Maximum size of the U-Boot image. When defined, the 4621feb85801SSascha Silbe build system checks that the actual size does not 4622feb85801SSascha Silbe exceed it. 4623feb85801SSascha Silbe 4624c609719bSwdenkLow Level (hardware related) configuration options: 4625dc7c9a1aSwdenk--------------------------------------------------- 4626c609719bSwdenk 46276d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CACHELINE_SIZE: 4628c609719bSwdenk Cache Line Size of the CPU. 4629c609719bSwdenk 46306d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DEFAULT_IMMR: 4631c609719bSwdenk Default address of the IMMR after system reset. 46322535d602Swdenk 46332535d602Swdenk Needed on some 8260 systems (MPC8260ADS, PQ2FADS-ZU, 46342535d602Swdenk and RPXsuper) to be able to adjust the position of 46352535d602Swdenk the IMMR register after a reset. 4636c609719bSwdenk 4637e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_DEFAULT: 4638e46fedfeSTimur Tabi Default (power-on reset) physical address of CCSR on Freescale 4639e46fedfeSTimur Tabi PowerPC SOCs. 4640e46fedfeSTimur Tabi 4641e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR: 4642e46fedfeSTimur Tabi Virtual address of CCSR. On a 32-bit build, this is typically 4643e46fedfeSTimur Tabi the same value as CONFIG_SYS_CCSRBAR_DEFAULT. 4644e46fedfeSTimur Tabi 4645e46fedfeSTimur Tabi CONFIG_SYS_DEFAULT_IMMR must also be set to this value, 4646e46fedfeSTimur Tabi for cross-platform code that uses that macro instead. 4647e46fedfeSTimur Tabi 4648e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS: 4649e46fedfeSTimur Tabi Physical address of CCSR. CCSR can be relocated to a new 4650e46fedfeSTimur Tabi physical address, if desired. In this case, this macro should 4651e46fedfeSTimur Tabi be set to that address. Otherwise, it should be set to the 4652e46fedfeSTimur Tabi same value as CONFIG_SYS_CCSRBAR_DEFAULT. For example, CCSR 4653e46fedfeSTimur Tabi is typically relocated on 36-bit builds. It is recommended 4654e46fedfeSTimur Tabi that this macro be defined via the _HIGH and _LOW macros: 4655e46fedfeSTimur Tabi 4656e46fedfeSTimur Tabi #define CONFIG_SYS_CCSRBAR_PHYS ((CONFIG_SYS_CCSRBAR_PHYS_HIGH 4657e46fedfeSTimur Tabi * 1ull) << 32 | CONFIG_SYS_CCSRBAR_PHYS_LOW) 4658e46fedfeSTimur Tabi 4659e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS_HIGH: 4660e46fedfeSTimur Tabi Bits 33-36 of CONFIG_SYS_CCSRBAR_PHYS. This value is typically 4661e46fedfeSTimur Tabi either 0 (32-bit build) or 0xF (36-bit build). This macro is 4662e46fedfeSTimur Tabi used in assembly code, so it must not contain typecasts or 4663e46fedfeSTimur Tabi integer size suffixes (e.g. "ULL"). 4664e46fedfeSTimur Tabi 4665e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS_LOW: 4666e46fedfeSTimur Tabi Lower 32-bits of CONFIG_SYS_CCSRBAR_PHYS. This macro is 4667e46fedfeSTimur Tabi used in assembly code, so it must not contain typecasts or 4668e46fedfeSTimur Tabi integer size suffixes (e.g. "ULL"). 4669e46fedfeSTimur Tabi 4670e46fedfeSTimur Tabi- CONFIG_SYS_CCSR_DO_NOT_RELOCATE: 4671e46fedfeSTimur Tabi If this macro is defined, then CONFIG_SYS_CCSRBAR_PHYS will be 4672e46fedfeSTimur Tabi forced to a value that ensures that CCSR is not relocated. 4673e46fedfeSTimur Tabi 46747f6c2cbcSwdenk- Floppy Disk Support: 46756d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FDC_DRIVE_NUMBER 46767f6c2cbcSwdenk 46777f6c2cbcSwdenk the default drive number (default value 0) 46787f6c2cbcSwdenk 46796d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_ISA_IO_STRIDE 46807f6c2cbcSwdenk 468111ccc33fSMarcel Ziswiler defines the spacing between FDC chipset registers 46827f6c2cbcSwdenk (default value 1) 46837f6c2cbcSwdenk 46846d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_ISA_IO_OFFSET 46857f6c2cbcSwdenk 46867f6c2cbcSwdenk defines the offset of register from address. It 46877f6c2cbcSwdenk depends on which part of the data bus is connected to 468811ccc33fSMarcel Ziswiler the FDC chipset. (default value 0) 46897f6c2cbcSwdenk 46906d0f6bcfSJean-Christophe PLAGNIOL-VILLARD If CONFIG_SYS_ISA_IO_STRIDE CONFIG_SYS_ISA_IO_OFFSET and 46916d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FDC_DRIVE_NUMBER are undefined, they take their 46927f6c2cbcSwdenk default value. 46937f6c2cbcSwdenk 46946d0f6bcfSJean-Christophe PLAGNIOL-VILLARD if CONFIG_SYS_FDC_HW_INIT is defined, then the function 46957f6c2cbcSwdenk fdc_hw_init() is called at the beginning of the FDC 46967f6c2cbcSwdenk setup. fdc_hw_init() must be provided by the board 46977f6c2cbcSwdenk source code. It is used to make hardware dependant 46987f6c2cbcSwdenk initializations. 46997f6c2cbcSwdenk 47000abddf82SMacpaul Lin- CONFIG_IDE_AHB: 47010abddf82SMacpaul Lin Most IDE controllers were designed to be connected with PCI 47020abddf82SMacpaul Lin interface. Only few of them were designed for AHB interface. 47030abddf82SMacpaul Lin When software is doing ATA command and data transfer to 47040abddf82SMacpaul Lin IDE devices through IDE-AHB controller, some additional 47050abddf82SMacpaul Lin registers accessing to these kind of IDE-AHB controller 47060abddf82SMacpaul Lin is requierd. 47070abddf82SMacpaul Lin 47086d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_IMMR: Physical address of the Internal Memory. 470925d6712aSwdenk DO NOT CHANGE unless you know exactly what you're 471025d6712aSwdenk doing! (11-4) [MPC8xx/82xx systems only] 4711c609719bSwdenk 47126d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_INIT_RAM_ADDR: 4713c609719bSwdenk 47147152b1d0Swdenk Start address of memory area that can be used for 4715c609719bSwdenk initial data and stack; please note that this must be 4716c609719bSwdenk writable memory that is working WITHOUT special 4717c609719bSwdenk initialization, i. e. you CANNOT use normal RAM which 4718c609719bSwdenk will become available only after programming the 4719c609719bSwdenk memory controller and running certain initialization 4720c609719bSwdenk sequences. 4721c609719bSwdenk 4722c609719bSwdenk U-Boot uses the following memory types: 4723c609719bSwdenk - MPC8xx and MPC8260: IMMR (internal memory of the CPU) 4724c609719bSwdenk - MPC824X: data cache 4725c609719bSwdenk - PPC4xx: data cache 4726c609719bSwdenk 47276d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_GBL_DATA_OFFSET: 4728c609719bSwdenk 4729c609719bSwdenk Offset of the initial data structure in the memory 47306d0f6bcfSJean-Christophe PLAGNIOL-VILLARD area defined by CONFIG_SYS_INIT_RAM_ADDR. Usually 47316d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_GBL_DATA_OFFSET is chosen such that the initial 4732c609719bSwdenk data is located at the end of the available space 4733553f0982SWolfgang Denk (sometimes written as (CONFIG_SYS_INIT_RAM_SIZE - 47346d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_DATA_SIZE), and the initial stack is just 47356d0f6bcfSJean-Christophe PLAGNIOL-VILLARD below that area (growing from (CONFIG_SYS_INIT_RAM_ADDR + 47366d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_GBL_DATA_OFFSET) downward. 4737c609719bSwdenk 4738c609719bSwdenk Note: 4739c609719bSwdenk On the MPC824X (or other systems that use the data 4740c609719bSwdenk cache for initial memory) the address chosen for 47416d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_RAM_ADDR is basically arbitrary - it must 4742c609719bSwdenk point to an otherwise UNUSED address space between 4743c609719bSwdenk the top of RAM and the start of the PCI space. 4744c609719bSwdenk 47456d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SIUMCR: SIU Module Configuration (11-6) 4746c609719bSwdenk 47476d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SYPCR: System Protection Control (11-9) 4748c609719bSwdenk 47496d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_TBSCR: Time Base Status and Control (11-26) 4750c609719bSwdenk 47516d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PISCR: Periodic Interrupt Status and Control (11-31) 4752c609719bSwdenk 47536d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PLPRCR: PLL, Low-Power, and Reset Control Register (15-30) 4754c609719bSwdenk 47556d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SCCR: System Clock and reset Control Register (15-27) 4756c609719bSwdenk 47576d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_OR_TIMING_SDRAM: 4758c609719bSwdenk SDRAM timing 4759c609719bSwdenk 47606d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAMR_PTA: 4761c609719bSwdenk periodic timer for refresh 4762c609719bSwdenk 47636d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DER: Debug Event Register (37-47) 4764c609719bSwdenk 47656d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- FLASH_BASE0_PRELIM, FLASH_BASE1_PRELIM, CONFIG_SYS_REMAP_OR_AM, 47666d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PRELIM_OR_AM, CONFIG_SYS_OR_TIMING_FLASH, CONFIG_SYS_OR0_REMAP, 47676d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR0_PRELIM, CONFIG_SYS_BR0_PRELIM, CONFIG_SYS_OR1_REMAP, CONFIG_SYS_OR1_PRELIM, 47686d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BR1_PRELIM: 4769c609719bSwdenk Memory Controller Definitions: BR0/1 and OR0/1 (FLASH) 4770c609719bSwdenk 4771c609719bSwdenk- SDRAM_BASE2_PRELIM, SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE, 47726d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR_TIMING_SDRAM, CONFIG_SYS_OR2_PRELIM, CONFIG_SYS_BR2_PRELIM, 47736d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR3_PRELIM, CONFIG_SYS_BR3_PRELIM: 4774c609719bSwdenk Memory Controller Definitions: BR2/3 and OR2/3 (SDRAM) 4775c609719bSwdenk 47766d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAMR_PTA, CONFIG_SYS_MPTPR_2BK_4K, CONFIG_SYS_MPTPR_1BK_4K, CONFIG_SYS_MPTPR_2BK_8K, 47776d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MPTPR_1BK_8K, CONFIG_SYS_MAMR_8COL, CONFIG_SYS_MAMR_9COL: 4778c609719bSwdenk Machine Mode Register and Memory Periodic Timer 4779c609719bSwdenk Prescaler definitions (SDRAM timing) 4780c609719bSwdenk 47816d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_I2C_UCODE_PATCH, CONFIG_SYS_I2C_DPMEM_OFFSET [0x1FC0]: 4782c609719bSwdenk enable I2C microcode relocation patch (MPC8xx); 4783c609719bSwdenk define relocation offset in DPRAM [DSP2] 4784c609719bSwdenk 47856d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SMC_UCODE_PATCH, CONFIG_SYS_SMC_DPMEM_OFFSET [0x1FC0]: 4786b423d055SHeiko Schocher enable SMC microcode relocation patch (MPC8xx); 4787b423d055SHeiko Schocher define relocation offset in DPRAM [SMC1] 4788b423d055SHeiko Schocher 47896d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPI_UCODE_PATCH, CONFIG_SYS_SPI_DPMEM_OFFSET [0x1FC0]: 4790c609719bSwdenk enable SPI microcode relocation patch (MPC8xx); 4791c609719bSwdenk define relocation offset in DPRAM [SCC4] 4792c609719bSwdenk 47936d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_USE_OSCCLK: 4794c609719bSwdenk Use OSCM clock mode on MBX8xx board. Be careful, 4795c609719bSwdenk wrong setting might damage your board. Read 4796c609719bSwdenk doc/README.MBX before setting this variable! 4797c609719bSwdenk 47986d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CPM_POST_WORD_ADDR: (MPC8xx, MPC8260 only) 4799ea909b76Swdenk Offset of the bootmode word in DPRAM used by post 4800ea909b76Swdenk (Power On Self Tests). This definition overrides 4801ea909b76Swdenk #define'd default value in commproc.h resp. 4802ea909b76Swdenk cpm_8260.h. 4803ea909b76Swdenk 48046d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PCI_SLV_MEM_LOCAL, CONFIG_SYS_PCI_SLV_MEM_BUS, CONFIG_SYS_PICMR0_MASK_ATTRIB, 48056d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR0_LOCAL, CONFIG_SYS_PCIMSK0_MASK, CONFIG_SYS_PCI_MSTR1_LOCAL, 48066d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCIMSK1_MASK, CONFIG_SYS_PCI_MSTR_MEM_LOCAL, CONFIG_SYS_PCI_MSTR_MEM_BUS, 48076d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CPU_PCI_MEM_START, CONFIG_SYS_PCI_MSTR_MEM_SIZE, CONFIG_SYS_POCMR0_MASK_ATTRIB, 48086d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_MEMIO_LOCAL, CONFIG_SYS_PCI_MSTR_MEMIO_BUS, CPU_PCI_MEMIO_START, 48096d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_MEMIO_SIZE, CONFIG_SYS_POCMR1_MASK_ATTRIB, CONFIG_SYS_PCI_MSTR_IO_LOCAL, 48106d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_IO_BUS, CONFIG_SYS_CPU_PCI_IO_START, CONFIG_SYS_PCI_MSTR_IO_SIZE, 48116d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_POCMR2_MASK_ATTRIB: (MPC826x only) 4812a47a12beSStefan Roese Overrides the default PCI memory map in arch/powerpc/cpu/mpc8260/pci.c if set. 48135d232d0eSwdenk 48149cacf4fcSDirk Eibach- CONFIG_PCI_DISABLE_PCIE: 48159cacf4fcSDirk Eibach Disable PCI-Express on systems where it is supported but not 48169cacf4fcSDirk Eibach required. 48179cacf4fcSDirk Eibach 481869fd2d3bSAndrew Sharp- CONFIG_PCI_ENUM_ONLY 481969fd2d3bSAndrew Sharp Only scan through and get the devices on the busses. 482069fd2d3bSAndrew Sharp Don't do any setup work, presumably because someone or 482169fd2d3bSAndrew Sharp something has already done it, and we don't need to do it 482269fd2d3bSAndrew Sharp a second time. Useful for platforms that are pre-booted 482369fd2d3bSAndrew Sharp by coreboot or similar. 482469fd2d3bSAndrew Sharp 4825842033e6SGabor Juhos- CONFIG_PCI_INDIRECT_BRIDGE: 4826842033e6SGabor Juhos Enable support for indirect PCI bridges. 4827842033e6SGabor Juhos 4828a09b9b68SKumar Gala- CONFIG_SYS_SRIO: 4829a09b9b68SKumar Gala Chip has SRIO or not 4830a09b9b68SKumar Gala 4831a09b9b68SKumar Gala- CONFIG_SRIO1: 4832a09b9b68SKumar Gala Board has SRIO 1 port available 4833a09b9b68SKumar Gala 4834a09b9b68SKumar Gala- CONFIG_SRIO2: 4835a09b9b68SKumar Gala Board has SRIO 2 port available 4836a09b9b68SKumar Gala 4837c8b28152SLiu Gang- CONFIG_SRIO_PCIE_BOOT_MASTER 4838c8b28152SLiu Gang Board can support master function for Boot from SRIO and PCIE 4839c8b28152SLiu Gang 4840a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_VIRT: 4841a09b9b68SKumar Gala Virtual Address of SRIO port 'n' memory region 4842a09b9b68SKumar Gala 4843a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_PHYS: 4844a09b9b68SKumar Gala Physical Address of SRIO port 'n' memory region 4845a09b9b68SKumar Gala 4846a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_SIZE: 4847a09b9b68SKumar Gala Size of SRIO port 'n' memory region 4848a09b9b68SKumar Gala 484966bd1846SFabio Estevam- CONFIG_SYS_NAND_BUSWIDTH_16BIT 485066bd1846SFabio Estevam Defined to tell the NAND controller that the NAND chip is using 485166bd1846SFabio Estevam a 16 bit bus. 485266bd1846SFabio Estevam Not all NAND drivers use this symbol. 4853a430e916SFabio Estevam Example of drivers that use it: 485466bd1846SFabio Estevam - drivers/mtd/nand/ndfc.c 4855a430e916SFabio Estevam - drivers/mtd/nand/mxc_nand.c 4856eced4626SAlex Waterman 4857eced4626SAlex Waterman- CONFIG_SYS_NDFC_EBC0_CFG 4858eced4626SAlex Waterman Sets the EBC0_CFG register for the NDFC. If not defined 4859eced4626SAlex Waterman a default value will be used. 4860eced4626SAlex Waterman 4861bb99ad6dSBen Warren- CONFIG_SPD_EEPROM 4862218ca724SWolfgang Denk Get DDR timing information from an I2C EEPROM. Common 4863218ca724SWolfgang Denk with pluggable memory modules such as SODIMMs 4864218ca724SWolfgang Denk 4865bb99ad6dSBen Warren SPD_EEPROM_ADDRESS 4866bb99ad6dSBen Warren I2C address of the SPD EEPROM 4867bb99ad6dSBen Warren 48686d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPD_BUS_NUM 4869218ca724SWolfgang Denk If SPD EEPROM is on an I2C bus other than the first 4870218ca724SWolfgang Denk one, specify here. Note that the value must resolve 4871218ca724SWolfgang Denk to something your driver can deal with. 4872bb99ad6dSBen Warren 48731b3e3c4fSYork Sun- CONFIG_SYS_DDR_RAW_TIMING 48741b3e3c4fSYork Sun Get DDR timing information from other than SPD. Common with 48751b3e3c4fSYork Sun soldered DDR chips onboard without SPD. DDR raw timing 48761b3e3c4fSYork Sun parameters are extracted from datasheet and hard-coded into 48771b3e3c4fSYork Sun header files or board specific files. 48781b3e3c4fSYork Sun 48796f5e1dc5SYork Sun- CONFIG_FSL_DDR_INTERACTIVE 48806f5e1dc5SYork Sun Enable interactive DDR debugging. See doc/README.fsl-ddr. 48816f5e1dc5SYork Sun 48826d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_83XX_DDR_USES_CS0 4883218ca724SWolfgang Denk Only for 83xx systems. If specified, then DDR should 4884218ca724SWolfgang Denk be configured using CS0 and CS1 instead of CS2 and CS3. 48852ad6b513STimur Tabi 4886c26e454dSwdenk- CONFIG_ETHER_ON_FEC[12] 4887c26e454dSwdenk Define to enable FEC[12] on a 8xx series processor. 4888c26e454dSwdenk 4889c26e454dSwdenk- CONFIG_FEC[12]_PHY 4890c26e454dSwdenk Define to the hardcoded PHY address which corresponds 48916e592385Swdenk to the given FEC; i. e. 4892c26e454dSwdenk #define CONFIG_FEC1_PHY 4 4893c26e454dSwdenk means that the PHY with address 4 is connected to FEC1 4894c26e454dSwdenk 4895c26e454dSwdenk When set to -1, means to probe for first available. 4896c26e454dSwdenk 4897c26e454dSwdenk- CONFIG_FEC[12]_PHY_NORXERR 4898c26e454dSwdenk The PHY does not have a RXERR line (RMII only). 4899c26e454dSwdenk (so program the FEC to ignore it). 4900c26e454dSwdenk 4901c26e454dSwdenk- CONFIG_RMII 4902c26e454dSwdenk Enable RMII mode for all FECs. 4903c26e454dSwdenk Note that this is a global option, we can't 4904c26e454dSwdenk have one FEC in standard MII mode and another in RMII mode. 4905c26e454dSwdenk 49065cf91d6bSwdenk- CONFIG_CRC32_VERIFY 49075cf91d6bSwdenk Add a verify option to the crc32 command. 49085cf91d6bSwdenk The syntax is: 49095cf91d6bSwdenk 49105cf91d6bSwdenk => crc32 -v <address> <count> <crc32> 49115cf91d6bSwdenk 49125cf91d6bSwdenk Where address/count indicate a memory area 49135cf91d6bSwdenk and crc32 is the correct crc32 which the 49145cf91d6bSwdenk area should have. 49155cf91d6bSwdenk 491656523f12Swdenk- CONFIG_LOOPW 491756523f12Swdenk Add the "loopw" memory command. This only takes effect if 4918602ad3b3SJon Loeliger the memory commands are activated globally (CONFIG_CMD_MEM). 491956523f12Swdenk 49207b466641Sstroese- CONFIG_MX_CYCLIC 49217b466641Sstroese Add the "mdc" and "mwc" memory commands. These are cyclic 49227b466641Sstroese "md/mw" commands. 49237b466641Sstroese Examples: 49247b466641Sstroese 49257b466641Sstroese => mdc.b 10 4 500 49267b466641Sstroese This command will print 4 bytes (10,11,12,13) each 500 ms. 49277b466641Sstroese 49287b466641Sstroese => mwc.l 100 12345678 10 49297b466641Sstroese This command will write 12345678 to address 100 all 10 ms. 49307b466641Sstroese 49317b466641Sstroese This only takes effect if the memory commands are activated 4932602ad3b3SJon Loeliger globally (CONFIG_CMD_MEM). 49337b466641Sstroese 49348aa1a2d1Swdenk- CONFIG_SKIP_LOWLEVEL_INIT 4935afc1ce82SMacpaul Lin [ARM, NDS32, MIPS only] If this variable is defined, then certain 4936e03f3169SWolfgang Denk low level initializations (like setting up the memory 4937e03f3169SWolfgang Denk controller) are omitted and/or U-Boot does not 4938e03f3169SWolfgang Denk relocate itself into RAM. 49398aa1a2d1Swdenk 4940e03f3169SWolfgang Denk Normally this variable MUST NOT be defined. The only 4941e03f3169SWolfgang Denk exception is when U-Boot is loaded (to RAM) by some 4942e03f3169SWolfgang Denk other boot loader or by a debugger which performs 4943e03f3169SWolfgang Denk these initializations itself. 49448aa1a2d1Swdenk 4945401bb30bSAneesh V- CONFIG_SPL_BUILD 4946df81238bSMagnus Lilja Modifies the behaviour of start.S when compiling a loader 4947df81238bSMagnus Lilja that is executed before the actual U-Boot. E.g. when 4948df81238bSMagnus Lilja compiling a NAND SPL. 4949400558b5Swdenk 49503aa29de0SYing Zhang- CONFIG_TPL_BUILD 49513aa29de0SYing Zhang Modifies the behaviour of start.S when compiling a loader 49523aa29de0SYing Zhang that is executed after the SPL and before the actual U-Boot. 49533aa29de0SYing Zhang It is loaded by the SPL. 49543aa29de0SYing Zhang 49555df572f0SYing Zhang- CONFIG_SYS_MPC85XX_NO_RESETVEC 49565df572f0SYing Zhang Only for 85xx systems. If this variable is specified, the section 49575df572f0SYing Zhang .resetvec is not kept and the section .bootpg is placed in the 49585df572f0SYing Zhang previous 4k of the .text section. 49595df572f0SYing Zhang 49604213fc29SSimon Glass- CONFIG_ARCH_MAP_SYSMEM 49614213fc29SSimon Glass Generally U-Boot (and in particular the md command) uses 49624213fc29SSimon Glass effective address. It is therefore not necessary to regard 49634213fc29SSimon Glass U-Boot address as virtual addresses that need to be translated 49644213fc29SSimon Glass to physical addresses. However, sandbox requires this, since 49654213fc29SSimon Glass it maintains its own little RAM buffer which contains all 49664213fc29SSimon Glass addressable memory. This option causes some memory accesses 49674213fc29SSimon Glass to be mapped through map_sysmem() / unmap_sysmem(). 49684213fc29SSimon Glass 4969d8834a13SMatthias Weisser- CONFIG_USE_ARCH_MEMCPY 4970d8834a13SMatthias Weisser CONFIG_USE_ARCH_MEMSET 4971d8834a13SMatthias Weisser If these options are used a optimized version of memcpy/memset will 4972d8834a13SMatthias Weisser be used if available. These functions may be faster under some 4973d8834a13SMatthias Weisser conditions but may increase the binary size. 4974d8834a13SMatthias Weisser 4975588a13f7SSimon Glass- CONFIG_X86_RESET_VECTOR 4976588a13f7SSimon Glass If defined, the x86 reset vector code is included. This is not 4977588a13f7SSimon Glass needed when U-Boot is running from Coreboot. 4978b16f521aSGabe Black 4979fc33705eSMark Jackson- CONFIG_SYS_MPUCLK 4980fc33705eSMark Jackson Defines the MPU clock speed (in MHz). 4981fc33705eSMark Jackson 4982fc33705eSMark Jackson NOTE : currently only supported on AM335x platforms. 49835b5ece9eSGabe Black 498416678eb4SHeiko Schocher- CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC: 498516678eb4SHeiko Schocher Enables the RTC32K OSC on AM33xx based plattforms 498616678eb4SHeiko Schocher 4987999d7d32SKaricheri, Muralidharan- CONFIG_SYS_NAND_NO_SUBPAGE_WRITE 4988999d7d32SKaricheri, Muralidharan Option to disable subpage write in NAND driver 4989999d7d32SKaricheri, Muralidharan driver that uses this: 4990999d7d32SKaricheri, Muralidharan drivers/mtd/nand/davinci_nand.c 4991999d7d32SKaricheri, Muralidharan 4992f2717b47STimur TabiFreescale QE/FMAN Firmware Support: 4993f2717b47STimur Tabi----------------------------------- 4994f2717b47STimur Tabi 4995f2717b47STimur TabiThe Freescale QUICCEngine (QE) and Frame Manager (FMAN) both support the 4996f2717b47STimur Tabiloading of "firmware", which is encoded in the QE firmware binary format. 4997f2717b47STimur TabiThis firmware often needs to be loaded during U-Boot booting, so macros 4998f2717b47STimur Tabiare used to identify the storage device (NOR flash, SPI, etc) and the address 4999f2717b47STimur Tabiwithin that device. 5000f2717b47STimur Tabi 5001dcf1d774SZhao Qiang- CONFIG_SYS_FMAN_FW_ADDR 5002dcf1d774SZhao Qiang The address in the storage device where the FMAN microcode is located. The 5003dcf1d774SZhao Qiang meaning of this address depends on which CONFIG_SYS_QE_FW_IN_xxx macro 5004dcf1d774SZhao Qiang is also specified. 5005dcf1d774SZhao Qiang 5006dcf1d774SZhao Qiang- CONFIG_SYS_QE_FW_ADDR 5007dcf1d774SZhao Qiang The address in the storage device where the QE microcode is located. The 5008f2717b47STimur Tabi meaning of this address depends on which CONFIG_SYS_QE_FW_IN_xxx macro 5009f2717b47STimur Tabi is also specified. 5010f2717b47STimur Tabi 5011f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_LENGTH 5012f2717b47STimur Tabi The maximum possible size of the firmware. The firmware binary format 5013f2717b47STimur Tabi has a field that specifies the actual size of the firmware, but it 5014f2717b47STimur Tabi might not be possible to read any part of the firmware unless some 5015f2717b47STimur Tabi local storage is allocated to hold the entire firmware first. 5016f2717b47STimur Tabi 5017f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_NOR 5018f2717b47STimur Tabi Specifies that QE/FMAN firmware is located in NOR flash, mapped as 5019f2717b47STimur Tabi normal addressable memory via the LBC. CONFIG_SYS_FMAN_FW_ADDR is the 5020f2717b47STimur Tabi virtual address in NOR flash. 5021f2717b47STimur Tabi 5022f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_NAND 5023f2717b47STimur Tabi Specifies that QE/FMAN firmware is located in NAND flash. 5024f2717b47STimur Tabi CONFIG_SYS_FMAN_FW_ADDR is the offset within NAND flash. 5025f2717b47STimur Tabi 5026f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_MMC 5027f2717b47STimur Tabi Specifies that QE/FMAN firmware is located on the primary SD/MMC 5028f2717b47STimur Tabi device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device. 5029f2717b47STimur Tabi 5030f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_SPIFLASH 5031f2717b47STimur Tabi Specifies that QE/FMAN firmware is located on the primary SPI 5032f2717b47STimur Tabi device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device. 5033f2717b47STimur Tabi 5034292dc6c5SLiu Gang- CONFIG_SYS_QE_FMAN_FW_IN_REMOTE 5035292dc6c5SLiu Gang Specifies that QE/FMAN firmware is located in the remote (master) 5036292dc6c5SLiu Gang memory space. CONFIG_SYS_FMAN_FW_ADDR is a virtual address which 5037fc54c7faSLiu Gang can be mapped from slave TLB->slave LAW->slave SRIO or PCIE outbound 5038fc54c7faSLiu Gang window->master inbound window->master LAW->the ucode address in 5039fc54c7faSLiu Gang master's memory space. 5040f2717b47STimur Tabi 5041b940ca64SJ. German RiveraFreescale Layerscape Management Complex Firmware Support: 5042b940ca64SJ. German Rivera--------------------------------------------------------- 5043b940ca64SJ. German RiveraThe Freescale Layerscape Management Complex (MC) supports the loading of 5044b940ca64SJ. German Rivera"firmware". 5045b940ca64SJ. German RiveraThis firmware often needs to be loaded during U-Boot booting, so macros 5046b940ca64SJ. German Riveraare used to identify the storage device (NOR flash, SPI, etc) and the address 5047b940ca64SJ. German Riverawithin that device. 5048b940ca64SJ. German Rivera 5049b940ca64SJ. German Rivera- CONFIG_FSL_MC_ENET 5050b940ca64SJ. German Rivera Enable the MC driver for Layerscape SoCs. 5051b940ca64SJ. German Rivera 5052b940ca64SJ. German Rivera- CONFIG_SYS_LS_MC_FW_ADDR 5053b940ca64SJ. German Rivera The address in the storage device where the firmware is located. The 5054b940ca64SJ. German Rivera meaning of this address depends on which CONFIG_SYS_LS_MC_FW_IN_xxx macro 5055b940ca64SJ. German Rivera is also specified. 5056b940ca64SJ. German Rivera 5057b940ca64SJ. German Rivera- CONFIG_SYS_LS_MC_FW_LENGTH 5058b940ca64SJ. German Rivera The maximum possible size of the firmware. The firmware binary format 5059b940ca64SJ. German Rivera has a field that specifies the actual size of the firmware, but it 5060b940ca64SJ. German Rivera might not be possible to read any part of the firmware unless some 5061b940ca64SJ. German Rivera local storage is allocated to hold the entire firmware first. 5062b940ca64SJ. German Rivera 5063b940ca64SJ. German Rivera- CONFIG_SYS_LS_MC_FW_IN_NOR 5064b940ca64SJ. German Rivera Specifies that MC firmware is located in NOR flash, mapped as 5065b940ca64SJ. German Rivera normal addressable memory via the LBC. CONFIG_SYS_LS_MC_FW_ADDR is the 5066b940ca64SJ. German Rivera virtual address in NOR flash. 5067b940ca64SJ. German Rivera 5068c609719bSwdenkBuilding the Software: 5069c609719bSwdenk====================== 5070c609719bSwdenk 5071218ca724SWolfgang DenkBuilding U-Boot has been tested in several native build environments 5072218ca724SWolfgang Denkand in many different cross environments. Of course we cannot support 5073218ca724SWolfgang Denkall possibly existing versions of cross development tools in all 5074218ca724SWolfgang Denk(potentially obsolete) versions. In case of tool chain problems we 5075218ca724SWolfgang Denkrecommend to use the ELDK (see http://www.denx.de/wiki/DULG/ELDK) 5076218ca724SWolfgang Denkwhich is extensively used to build and test U-Boot. 5077c609719bSwdenk 5078218ca724SWolfgang DenkIf you are not using a native environment, it is assumed that you 5079218ca724SWolfgang Denkhave GNU cross compiling tools available in your path. In this case, 5080218ca724SWolfgang Denkyou must set the environment variable CROSS_COMPILE in your shell. 5081218ca724SWolfgang DenkNote that no changes to the Makefile or any other source files are 5082218ca724SWolfgang Denknecessary. For example using the ELDK on a 4xx CPU, please enter: 5083c609719bSwdenk 5084218ca724SWolfgang Denk $ CROSS_COMPILE=ppc_4xx- 5085218ca724SWolfgang Denk $ export CROSS_COMPILE 5086c609719bSwdenk 50872f8d396bSPeter TyserNote: If you wish to generate Windows versions of the utilities in 50882f8d396bSPeter Tyser the tools directory you can use the MinGW toolchain 50892f8d396bSPeter Tyser (http://www.mingw.org). Set your HOST tools to the MinGW 50902f8d396bSPeter Tyser toolchain and execute 'make tools'. For example: 50912f8d396bSPeter Tyser 50922f8d396bSPeter Tyser $ make HOSTCC=i586-mingw32msvc-gcc HOSTSTRIP=i586-mingw32msvc-strip tools 50932f8d396bSPeter Tyser 50942f8d396bSPeter Tyser Binaries such as tools/mkimage.exe will be created which can 50952f8d396bSPeter Tyser be executed on computers running Windows. 50962f8d396bSPeter Tyser 5097c609719bSwdenkU-Boot is intended to be simple to build. After installing the 5098c609719bSwdenksources you must configure U-Boot for one specific board type. This 5099c609719bSwdenkis done by typing: 5100c609719bSwdenk 5101ab584d67SHolger Freyther make NAME_defconfig 5102c609719bSwdenk 5103ab584d67SHolger Freytherwhere "NAME_defconfig" is the name of one of the existing configu- 51044d675ae6SMichael Jonesrations; see boards.cfg for supported names. 510554387ac9Swdenk 5106c609719bSwdenkNote: for some board special configuration names may exist; check if 5107c609719bSwdenk additional information is available from the board vendor; for 51082729af9dSwdenk instance, the TQM823L systems are available without (standard) 51092729af9dSwdenk or with LCD support. You can select such additional "features" 511011ccc33fSMarcel Ziswiler when choosing the configuration, i. e. 5111c609719bSwdenk 5112ab584d67SHolger Freyther make TQM823L_defconfig 51132729af9dSwdenk - will configure for a plain TQM823L, i. e. no LCD support 5114c609719bSwdenk 5115ab584d67SHolger Freyther make TQM823L_LCD_defconfig 5116c609719bSwdenk - will configure for a TQM823L with U-Boot console on LCD 5117c609719bSwdenk 5118c609719bSwdenk etc. 5119c609719bSwdenk 5120c609719bSwdenk 5121c609719bSwdenkFinally, type "make all", and you should get some working U-Boot 51227152b1d0Swdenkimages ready for download to / installation on your system: 5123c609719bSwdenk 5124c609719bSwdenk- "u-boot.bin" is a raw binary image 5125c609719bSwdenk- "u-boot" is an image in ELF binary format 5126c609719bSwdenk- "u-boot.srec" is in Motorola S-Record format 5127c609719bSwdenk 5128baf31249SMarian BalakowiczBy default the build is performed locally and the objects are saved 5129baf31249SMarian Balakowiczin the source directory. One of the two methods can be used to change 5130baf31249SMarian Balakowiczthis behavior and build U-Boot to some external directory: 5131baf31249SMarian Balakowicz 5132baf31249SMarian Balakowicz1. Add O= to the make command line invocations: 5133baf31249SMarian Balakowicz 5134baf31249SMarian Balakowicz make O=/tmp/build distclean 5135ab584d67SHolger Freyther make O=/tmp/build NAME_defconfig 5136baf31249SMarian Balakowicz make O=/tmp/build all 5137baf31249SMarian Balakowicz 5138adbba996STimo Ketola2. Set environment variable KBUILD_OUTPUT to point to the desired location: 5139baf31249SMarian Balakowicz 5140adbba996STimo Ketola export KBUILD_OUTPUT=/tmp/build 5141baf31249SMarian Balakowicz make distclean 5142ab584d67SHolger Freyther make NAME_defconfig 5143baf31249SMarian Balakowicz make all 5144baf31249SMarian Balakowicz 5145adbba996STimo KetolaNote that the command line "O=" setting overrides the KBUILD_OUTPUT environment 5146baf31249SMarian Balakowiczvariable. 5147baf31249SMarian Balakowicz 5148c609719bSwdenk 5149c609719bSwdenkPlease be aware that the Makefiles assume you are using GNU make, so 5150c609719bSwdenkfor instance on NetBSD you might need to use "gmake" instead of 5151c609719bSwdenknative "make". 5152c609719bSwdenk 5153c609719bSwdenk 5154c609719bSwdenkIf the system board that you have is not listed, then you will need 5155c609719bSwdenkto port U-Boot to your hardware platform. To do this, follow these 5156c609719bSwdenksteps: 5157c609719bSwdenk 5158c609719bSwdenk1. Add a new configuration option for your board to the toplevel 51594d675ae6SMichael Jones "boards.cfg" file, using the existing entries as examples. 51604d675ae6SMichael Jones Follow the instructions there to keep the boards in order. 5161c609719bSwdenk2. Create a new directory to hold your board specific code. Add any 516285ec0bccSwdenk files you need. In your board directory, you will need at least 516385ec0bccSwdenk the "Makefile", a "<board>.c", "flash.c" and "u-boot.lds". 516485ec0bccSwdenk3. Create a new configuration file "include/configs/<board>.h" for 516585ec0bccSwdenk your board 5166c609719bSwdenk3. If you're porting U-Boot to a new CPU, then also create a new 5167c609719bSwdenk directory to hold your CPU specific code. Add any files you need. 5168ab584d67SHolger Freyther4. Run "make <board>_defconfig" with your new name. 5169c609719bSwdenk5. Type "make", and you should get a working "u-boot.srec" file 5170c609719bSwdenk to be installed on your target system. 517185ec0bccSwdenk6. Debug and solve any problems that might arise. 5172c609719bSwdenk [Of course, this last step is much harder than it sounds.] 5173c609719bSwdenk 5174c609719bSwdenk 5175c609719bSwdenkTesting of U-Boot Modifications, Ports to New Hardware, etc.: 5176c609719bSwdenk============================================================== 5177c609719bSwdenk 5178c609719bSwdenkIf you have modified U-Boot sources (for instance added a new board 5179c609719bSwdenkor support for new devices, a new CPU, etc.) you are expected to 5180c609719bSwdenkprovide feedback to the other developers. The feedback normally takes 5181c609719bSwdenkthe form of a "patch", i. e. a context diff against a certain (latest 5182218ca724SWolfgang Denkofficial or latest in the git repository) version of U-Boot sources. 5183c609719bSwdenk 5184c609719bSwdenkBut before you submit such a patch, please verify that your modifi- 5185c609719bSwdenkcation did not break existing code. At least make sure that *ALL* of 5186c609719bSwdenkthe supported boards compile WITHOUT ANY compiler warnings. To do so, 5187c609719bSwdenkjust run the "MAKEALL" script, which will configure and build U-Boot 5188c609719bSwdenkfor ALL supported system. Be warned, this will take a while. You can 51897152b1d0Swdenkselect which (cross) compiler to use by passing a `CROSS_COMPILE' 5190218ca724SWolfgang Denkenvironment variable to the script, i. e. to use the ELDK cross tools 5191218ca724SWolfgang Denkyou can type 5192c609719bSwdenk 5193c609719bSwdenk CROSS_COMPILE=ppc_8xx- MAKEALL 5194c609719bSwdenk 5195c609719bSwdenkor to build on a native PowerPC system you can type 5196c609719bSwdenk 5197c609719bSwdenk CROSS_COMPILE=' ' MAKEALL 5198c609719bSwdenk 5199218ca724SWolfgang DenkWhen using the MAKEALL script, the default behaviour is to build 5200218ca724SWolfgang DenkU-Boot in the source directory. This location can be changed by 5201218ca724SWolfgang Denksetting the BUILD_DIR environment variable. Also, for each target 5202218ca724SWolfgang Denkbuilt, the MAKEALL script saves two log files (<target>.ERR and 5203218ca724SWolfgang Denk<target>.MAKEALL) in the <source dir>/LOG directory. This default 5204218ca724SWolfgang Denklocation can be changed by setting the MAKEALL_LOGDIR environment 5205218ca724SWolfgang Denkvariable. For example: 5206baf31249SMarian Balakowicz 5207baf31249SMarian Balakowicz export BUILD_DIR=/tmp/build 5208baf31249SMarian Balakowicz export MAKEALL_LOGDIR=/tmp/log 5209baf31249SMarian Balakowicz CROSS_COMPILE=ppc_8xx- MAKEALL 5210baf31249SMarian Balakowicz 5211218ca724SWolfgang DenkWith the above settings build objects are saved in the /tmp/build, 5212218ca724SWolfgang Denklog files are saved in the /tmp/log and the source tree remains clean 5213218ca724SWolfgang Denkduring the whole build process. 5214baf31249SMarian Balakowicz 5215baf31249SMarian Balakowicz 5216c609719bSwdenkSee also "U-Boot Porting Guide" below. 5217c609719bSwdenk 5218c609719bSwdenk 5219c609719bSwdenkMonitor Commands - Overview: 5220c609719bSwdenk============================ 5221c609719bSwdenk 5222c609719bSwdenkgo - start application at address 'addr' 5223c609719bSwdenkrun - run commands in an environment variable 5224c609719bSwdenkbootm - boot application image from memory 5225c609719bSwdenkbootp - boot image via network using BootP/TFTP protocol 522644f074c7SMarek Vasutbootz - boot zImage from memory 5227c609719bSwdenktftpboot- boot image via network using TFTP protocol 5228c609719bSwdenk and env variables "ipaddr" and "serverip" 5229c609719bSwdenk (and eventually "gatewayip") 52301fb7cd49SSimon Glasstftpput - upload a file via network using TFTP protocol 5231c609719bSwdenkrarpboot- boot image via network using RARP/TFTP protocol 5232c609719bSwdenkdiskboot- boot from IDE devicebootd - boot default, i.e., run 'bootcmd' 5233c609719bSwdenkloads - load S-Record file over serial line 5234c609719bSwdenkloadb - load binary file over serial line (kermit mode) 5235c609719bSwdenkmd - memory display 5236c609719bSwdenkmm - memory modify (auto-incrementing) 5237c609719bSwdenknm - memory modify (constant address) 5238c609719bSwdenkmw - memory write (fill) 5239c609719bSwdenkcp - memory copy 5240c609719bSwdenkcmp - memory compare 5241c609719bSwdenkcrc32 - checksum calculation 52420f89c54bSPeter Tyseri2c - I2C sub-system 5243c609719bSwdenksspi - SPI utility commands 5244c609719bSwdenkbase - print or set address offset 5245c609719bSwdenkprintenv- print environment variables 5246c609719bSwdenksetenv - set environment variables 5247c609719bSwdenksaveenv - save environment variables to persistent storage 5248c609719bSwdenkprotect - enable or disable FLASH write protection 5249c609719bSwdenkerase - erase FLASH memory 5250c609719bSwdenkflinfo - print FLASH memory information 525110635afaSKarl O. Pincnand - NAND memory operations (see doc/README.nand) 5252c609719bSwdenkbdinfo - print Board Info structure 5253c609719bSwdenkiminfo - print header information for application image 5254c609719bSwdenkconinfo - print console devices and informations 5255c609719bSwdenkide - IDE sub-system 5256c609719bSwdenkloop - infinite loop on address range 525756523f12Swdenkloopw - infinite write loop on address range 5258c609719bSwdenkmtest - simple RAM test 5259c609719bSwdenkicache - enable or disable instruction cache 5260c609719bSwdenkdcache - enable or disable data cache 5261c609719bSwdenkreset - Perform RESET of the CPU 5262c609719bSwdenkecho - echo args to console 5263c609719bSwdenkversion - print monitor version 5264c609719bSwdenkhelp - print online help 5265c609719bSwdenk? - alias for 'help' 5266c609719bSwdenk 5267c609719bSwdenk 5268c609719bSwdenkMonitor Commands - Detailed Description: 5269c609719bSwdenk======================================== 5270c609719bSwdenk 5271c609719bSwdenkTODO. 5272c609719bSwdenk 5273c609719bSwdenkFor now: just type "help <command>". 5274c609719bSwdenk 5275c609719bSwdenk 5276c609719bSwdenkEnvironment Variables: 5277c609719bSwdenk====================== 5278c609719bSwdenk 5279c609719bSwdenkU-Boot supports user configuration using Environment Variables which 5280c609719bSwdenkcan be made persistent by saving to Flash memory. 5281c609719bSwdenk 5282c609719bSwdenkEnvironment Variables are set using "setenv", printed using 5283c609719bSwdenk"printenv", and saved to Flash using "saveenv". Using "setenv" 5284c609719bSwdenkwithout a value can be used to delete a variable from the 5285c609719bSwdenkenvironment. As long as you don't save the environment you are 5286c609719bSwdenkworking with an in-memory copy. In case the Flash area containing the 5287c609719bSwdenkenvironment is erased by accident, a default environment is provided. 5288c609719bSwdenk 5289c96f86eeSWolfgang DenkSome configuration options can be set using Environment Variables. 5290c96f86eeSWolfgang Denk 5291c96f86eeSWolfgang DenkList of environment variables (most likely not complete): 5292c609719bSwdenk 5293c609719bSwdenk baudrate - see CONFIG_BAUDRATE 5294c609719bSwdenk 5295c609719bSwdenk bootdelay - see CONFIG_BOOTDELAY 5296c609719bSwdenk 5297c609719bSwdenk bootcmd - see CONFIG_BOOTCOMMAND 5298c609719bSwdenk 5299c609719bSwdenk bootargs - Boot arguments when booting an RTOS image 5300c609719bSwdenk 5301c609719bSwdenk bootfile - Name of the image to load with TFTP 5302c609719bSwdenk 53037d721e34SBartlomiej Sieka bootm_low - Memory range available for image processing in the bootm 53047d721e34SBartlomiej Sieka command can be restricted. This variable is given as 53057d721e34SBartlomiej Sieka a hexadecimal number and defines lowest address allowed 53067d721e34SBartlomiej Sieka for use by the bootm command. See also "bootm_size" 53077d721e34SBartlomiej Sieka environment variable. Address defined by "bootm_low" is 53087d721e34SBartlomiej Sieka also the base of the initial memory mapping for the Linux 5309c3624e6eSGrant Likely kernel -- see the description of CONFIG_SYS_BOOTMAPSZ and 5310c3624e6eSGrant Likely bootm_mapsize. 5311c3624e6eSGrant Likely 5312c3624e6eSGrant Likely bootm_mapsize - Size of the initial memory mapping for the Linux kernel. 5313c3624e6eSGrant Likely This variable is given as a hexadecimal number and it 5314c3624e6eSGrant Likely defines the size of the memory region starting at base 5315c3624e6eSGrant Likely address bootm_low that is accessible by the Linux kernel 5316c3624e6eSGrant Likely during early boot. If unset, CONFIG_SYS_BOOTMAPSZ is used 5317c3624e6eSGrant Likely as the default value if it is defined, and bootm_size is 5318c3624e6eSGrant Likely used otherwise. 53197d721e34SBartlomiej Sieka 53207d721e34SBartlomiej Sieka bootm_size - Memory range available for image processing in the bootm 53217d721e34SBartlomiej Sieka command can be restricted. This variable is given as 53227d721e34SBartlomiej Sieka a hexadecimal number and defines the size of the region 53237d721e34SBartlomiej Sieka allowed for use by the bootm command. See also "bootm_low" 53247d721e34SBartlomiej Sieka environment variable. 53257d721e34SBartlomiej Sieka 53264bae9090SBartlomiej Sieka updatefile - Location of the software update file on a TFTP server, used 53274bae9090SBartlomiej Sieka by the automatic software update feature. Please refer to 53284bae9090SBartlomiej Sieka documentation in doc/README.update for more details. 53294bae9090SBartlomiej Sieka 5330c609719bSwdenk autoload - if set to "no" (any string beginning with 'n'), 5331c609719bSwdenk "bootp" will just load perform a lookup of the 5332c609719bSwdenk configuration from the BOOTP server, but not try to 5333c609719bSwdenk load any image using TFTP 5334c609719bSwdenk 5335c609719bSwdenk autostart - if set to "yes", an image loaded using the "bootp", 5336c609719bSwdenk "rarpboot", "tftpboot" or "diskboot" commands will 5337c609719bSwdenk be automatically started (by internally calling 5338c609719bSwdenk "bootm") 5339c609719bSwdenk 53404a6fd34bSwdenk If set to "no", a standalone image passed to the 53414a6fd34bSwdenk "bootm" command will be copied to the load address 53424a6fd34bSwdenk (and eventually uncompressed), but NOT be started. 53434a6fd34bSwdenk This can be used to load and uncompress arbitrary 53444a6fd34bSwdenk data. 53454a6fd34bSwdenk 5346a28afca5SDavid A. Long fdt_high - if set this restricts the maximum address that the 5347a28afca5SDavid A. Long flattened device tree will be copied into upon boot. 5348fa34f6b2SShawn Guo For example, if you have a system with 1 GB memory 5349fa34f6b2SShawn Guo at physical address 0x10000000, while Linux kernel 5350fa34f6b2SShawn Guo only recognizes the first 704 MB as low memory, you 5351fa34f6b2SShawn Guo may need to set fdt_high as 0x3C000000 to have the 5352fa34f6b2SShawn Guo device tree blob be copied to the maximum address 5353fa34f6b2SShawn Guo of the 704 MB low memory, so that Linux kernel can 5354fa34f6b2SShawn Guo access it during the boot procedure. 5355fa34f6b2SShawn Guo 5356a28afca5SDavid A. Long If this is set to the special value 0xFFFFFFFF then 5357a28afca5SDavid A. Long the fdt will not be copied at all on boot. For this 5358a28afca5SDavid A. Long to work it must reside in writable memory, have 5359a28afca5SDavid A. Long sufficient padding on the end of it for u-boot to 5360a28afca5SDavid A. Long add the information it needs into it, and the memory 5361a28afca5SDavid A. Long must be accessible by the kernel. 5362a28afca5SDavid A. Long 5363eea63e05SSimon Glass fdtcontroladdr- if set this is the address of the control flattened 5364eea63e05SSimon Glass device tree used by U-Boot when CONFIG_OF_CONTROL is 5365eea63e05SSimon Glass defined. 5366eea63e05SSimon Glass 536717ea1177Swdenk i2cfast - (PPC405GP|PPC405EP only) 536817ea1177Swdenk if set to 'y' configures Linux I2C driver for fast 536917ea1177Swdenk mode (400kHZ). This environment variable is used in 537017ea1177Swdenk initialization code. So, for changes to be effective 537117ea1177Swdenk it must be saved and board must be reset. 537217ea1177Swdenk 5373c609719bSwdenk initrd_high - restrict positioning of initrd images: 5374c609719bSwdenk If this variable is not set, initrd images will be 5375c609719bSwdenk copied to the highest possible address in RAM; this 5376c609719bSwdenk is usually what you want since it allows for 5377c609719bSwdenk maximum initrd size. If for some reason you want to 5378c609719bSwdenk make sure that the initrd image is loaded below the 53796d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BOOTMAPSZ limit, you can set this environment 5380c609719bSwdenk variable to a value of "no" or "off" or "0". 5381c609719bSwdenk Alternatively, you can set it to a maximum upper 5382c609719bSwdenk address to use (U-Boot will still check that it 5383c609719bSwdenk does not overwrite the U-Boot stack and data). 5384c609719bSwdenk 5385c609719bSwdenk For instance, when you have a system with 16 MB 53867152b1d0Swdenk RAM, and want to reserve 4 MB from use by Linux, 5387c609719bSwdenk you can do this by adding "mem=12M" to the value of 5388c609719bSwdenk the "bootargs" variable. However, now you must make 53897152b1d0Swdenk sure that the initrd image is placed in the first 5390c609719bSwdenk 12 MB as well - this can be done with 5391c609719bSwdenk 5392c609719bSwdenk setenv initrd_high 00c00000 5393c609719bSwdenk 539438b99261Swdenk If you set initrd_high to 0xFFFFFFFF, this is an 539538b99261Swdenk indication to U-Boot that all addresses are legal 539638b99261Swdenk for the Linux kernel, including addresses in flash 539738b99261Swdenk memory. In this case U-Boot will NOT COPY the 539838b99261Swdenk ramdisk at all. This may be useful to reduce the 539938b99261Swdenk boot time on your system, but requires that this 540038b99261Swdenk feature is supported by your Linux kernel. 540138b99261Swdenk 5402c609719bSwdenk ipaddr - IP address; needed for tftpboot command 5403c609719bSwdenk 5404c609719bSwdenk loadaddr - Default load address for commands like "bootp", 5405dc7c9a1aSwdenk "rarpboot", "tftpboot", "loadb" or "diskboot" 5406c609719bSwdenk 5407c609719bSwdenk loads_echo - see CONFIG_LOADS_ECHO 5408c609719bSwdenk 5409c609719bSwdenk serverip - TFTP server IP address; needed for tftpboot command 5410c609719bSwdenk 5411c609719bSwdenk bootretry - see CONFIG_BOOT_RETRY_TIME 5412c609719bSwdenk 5413c609719bSwdenk bootdelaykey - see CONFIG_AUTOBOOT_DELAY_STR 5414c609719bSwdenk 5415c609719bSwdenk bootstopkey - see CONFIG_AUTOBOOT_STOP_STR 5416c609719bSwdenk 5417e2a53458SMike Frysinger ethprime - controls which interface is used first. 5418a3d991bdSwdenk 5419e2a53458SMike Frysinger ethact - controls which interface is currently active. 5420e2a53458SMike Frysinger For example you can do the following 5421a3d991bdSwdenk 542248690d80SHeiko Schocher => setenv ethact FEC 542348690d80SHeiko Schocher => ping 192.168.0.1 # traffic sent on FEC 542448690d80SHeiko Schocher => setenv ethact SCC 542548690d80SHeiko Schocher => ping 10.0.0.1 # traffic sent on SCC 5426a3d991bdSwdenk 5427e1692577SMatthias Fuchs ethrotate - When set to "no" U-Boot does not go through all 5428e1692577SMatthias Fuchs available network interfaces. 5429e1692577SMatthias Fuchs It just stays at the currently selected interface. 5430e1692577SMatthias Fuchs 5431a3d991bdSwdenk netretry - When set to "no" each network operation will 5432a3d991bdSwdenk either succeed or fail without retrying. 54336e592385Swdenk When set to "once" the network operation will 54346e592385Swdenk fail when all the available network interfaces 54356e592385Swdenk are tried once without success. 5436a3d991bdSwdenk Useful on scripts which control the retry operation 5437a3d991bdSwdenk themselves. 5438a3d991bdSwdenk 5439b4e2f89dSJean-Christophe PLAGNIOL-VILLARD npe_ucode - set load address for the NPE microcode 5440a1cf027aSJean-Christophe PLAGNIOL-VILLARD 54418d51aacdSSimon Glass silent_linux - If set then linux will be told to boot silently, by 54428d51aacdSSimon Glass changing the console to be empty. If "yes" it will be 54438d51aacdSSimon Glass made silent. If "no" it will not be made silent. If 54448d51aacdSSimon Glass unset, then it will be made silent if the U-Boot console 54458d51aacdSSimon Glass is silent. 54468d51aacdSSimon Glass 544728cb9375SWolfgang Denk tftpsrcport - If this is set, the value is used for TFTP's 5448ecb0ccd9SWolfgang Denk UDP source port. 5449ecb0ccd9SWolfgang Denk 545028cb9375SWolfgang Denk tftpdstport - If this is set, the value is used for TFTP's UDP 545128cb9375SWolfgang Denk destination port instead of the Well Know Port 69. 545228cb9375SWolfgang Denk 5453c96f86eeSWolfgang Denk tftpblocksize - Block size to use for TFTP transfers; if not set, 5454c96f86eeSWolfgang Denk we use the TFTP server's default block size 5455c96f86eeSWolfgang Denk 5456c96f86eeSWolfgang Denk tftptimeout - Retransmission timeout for TFTP packets (in milli- 5457c96f86eeSWolfgang Denk seconds, minimum value is 1000 = 1 second). Defines 5458c96f86eeSWolfgang Denk when a packet is considered to be lost so it has to 5459c96f86eeSWolfgang Denk be retransmitted. The default is 5000 = 5 seconds. 5460c96f86eeSWolfgang Denk Lowering this value may make downloads succeed 5461c96f86eeSWolfgang Denk faster in networks with high packet loss rates or 5462c96f86eeSWolfgang Denk with unreliable TFTP servers. 5463c96f86eeSWolfgang Denk 5464a3d991bdSwdenk vlan - When set to a value < 4095 the traffic over 546511ccc33fSMarcel Ziswiler Ethernet is encapsulated/received over 802.1q 5466a3d991bdSwdenk VLAN tagged frames. 5467c609719bSwdenk 5468dc0b7b0eSJason HobbsThe following image location variables contain the location of images 5469dc0b7b0eSJason Hobbsused in booting. The "Image" column gives the role of the image and is 5470dc0b7b0eSJason Hobbsnot an environment variable name. The other columns are environment 5471dc0b7b0eSJason Hobbsvariable names. "File Name" gives the name of the file on a TFTP 5472dc0b7b0eSJason Hobbsserver, "RAM Address" gives the location in RAM the image will be 5473dc0b7b0eSJason Hobbsloaded to, and "Flash Location" gives the image's address in NOR 5474dc0b7b0eSJason Hobbsflash or offset in NAND flash. 5475dc0b7b0eSJason Hobbs 5476dc0b7b0eSJason Hobbs*Note* - these variables don't have to be defined for all boards, some 5477dc0b7b0eSJason Hobbsboards currenlty use other variables for these purposes, and some 5478dc0b7b0eSJason Hobbsboards use these variables for other purposes. 5479dc0b7b0eSJason Hobbs 5480dc0b7b0eSJason HobbsImage File Name RAM Address Flash Location 5481dc0b7b0eSJason Hobbs----- --------- ----------- -------------- 5482dc0b7b0eSJason Hobbsu-boot u-boot u-boot_addr_r u-boot_addr 5483dc0b7b0eSJason HobbsLinux kernel bootfile kernel_addr_r kernel_addr 5484dc0b7b0eSJason Hobbsdevice tree blob fdtfile fdt_addr_r fdt_addr 5485dc0b7b0eSJason Hobbsramdisk ramdiskfile ramdisk_addr_r ramdisk_addr 5486dc0b7b0eSJason Hobbs 5487c609719bSwdenkThe following environment variables may be used and automatically 5488c609719bSwdenkupdated by the network boot commands ("bootp" and "rarpboot"), 5489c609719bSwdenkdepending the information provided by your boot server: 5490c609719bSwdenk 5491c609719bSwdenk bootfile - see above 5492c609719bSwdenk dnsip - IP address of your Domain Name Server 5493fe389a82Sstroese dnsip2 - IP address of your secondary Domain Name Server 5494c609719bSwdenk gatewayip - IP address of the Gateway (Router) to use 5495c609719bSwdenk hostname - Target hostname 5496c609719bSwdenk ipaddr - see above 5497c609719bSwdenk netmask - Subnet Mask 5498c609719bSwdenk rootpath - Pathname of the root filesystem on the NFS server 5499c609719bSwdenk serverip - see above 5500c609719bSwdenk 5501c609719bSwdenk 5502c609719bSwdenkThere are two special Environment Variables: 5503c609719bSwdenk 5504c609719bSwdenk serial# - contains hardware identification information such 5505c609719bSwdenk as type string and/or serial number 5506c609719bSwdenk ethaddr - Ethernet address 5507c609719bSwdenk 5508c609719bSwdenkThese variables can be set only once (usually during manufacturing of 5509c609719bSwdenkthe board). U-Boot refuses to delete or overwrite these variables 5510c609719bSwdenkonce they have been set once. 5511c609719bSwdenk 5512c609719bSwdenk 5513c1551ea8SstroeseFurther special Environment Variables: 5514c1551ea8Sstroese 5515c1551ea8Sstroese ver - Contains the U-Boot version string as printed 5516c1551ea8Sstroese with the "version" command. This variable is 5517c1551ea8Sstroese readonly (see CONFIG_VERSION_VARIABLE). 5518c1551ea8Sstroese 5519c1551ea8Sstroese 5520c609719bSwdenkPlease note that changes to some configuration parameters may take 5521c609719bSwdenkonly effect after the next boot (yes, that's just like Windoze :-). 5522c609719bSwdenk 5523c609719bSwdenk 5524170ab110SJoe HershbergerCallback functions for environment variables: 5525170ab110SJoe Hershberger--------------------------------------------- 5526170ab110SJoe Hershberger 5527170ab110SJoe HershbergerFor some environment variables, the behavior of u-boot needs to change 5528170ab110SJoe Hershbergerwhen their values are changed. This functionailty allows functions to 5529170ab110SJoe Hershbergerbe associated with arbitrary variables. On creation, overwrite, or 5530170ab110SJoe Hershbergerdeletion, the callback will provide the opportunity for some side 5531170ab110SJoe Hershbergereffect to happen or for the change to be rejected. 5532170ab110SJoe Hershberger 5533170ab110SJoe HershbergerThe callbacks are named and associated with a function using the 5534170ab110SJoe HershbergerU_BOOT_ENV_CALLBACK macro in your board or driver code. 5535170ab110SJoe Hershberger 5536170ab110SJoe HershbergerThese callbacks are associated with variables in one of two ways. The 5537170ab110SJoe Hershbergerstatic list can be added to by defining CONFIG_ENV_CALLBACK_LIST_STATIC 5538170ab110SJoe Hershbergerin the board configuration to a string that defines a list of 5539170ab110SJoe Hershbergerassociations. The list must be in the following format: 5540170ab110SJoe Hershberger 5541170ab110SJoe Hershberger entry = variable_name[:callback_name] 5542170ab110SJoe Hershberger list = entry[,list] 5543170ab110SJoe Hershberger 5544170ab110SJoe HershbergerIf the callback name is not specified, then the callback is deleted. 5545170ab110SJoe HershbergerSpaces are also allowed anywhere in the list. 5546170ab110SJoe Hershberger 5547170ab110SJoe HershbergerCallbacks can also be associated by defining the ".callbacks" variable 5548170ab110SJoe Hershbergerwith the same list format above. Any association in ".callbacks" will 5549170ab110SJoe Hershbergeroverride any association in the static list. You can define 5550170ab110SJoe HershbergerCONFIG_ENV_CALLBACK_LIST_DEFAULT to a list (string) to define the 5551170ab110SJoe Hershberger".callbacks" envirnoment variable in the default or embedded environment. 5552170ab110SJoe Hershberger 5553170ab110SJoe Hershberger 5554f07771ccSwdenkCommand Line Parsing: 5555f07771ccSwdenk===================== 5556f07771ccSwdenk 5557f07771ccSwdenkThere are two different command line parsers available with U-Boot: 55587152b1d0Swdenkthe old "simple" one, and the much more powerful "hush" shell: 5559f07771ccSwdenk 5560f07771ccSwdenkOld, simple command line parser: 5561f07771ccSwdenk-------------------------------- 5562f07771ccSwdenk 5563f07771ccSwdenk- supports environment variables (through setenv / saveenv commands) 5564f07771ccSwdenk- several commands on one line, separated by ';' 5565fe126d8bSWolfgang Denk- variable substitution using "... ${name} ..." syntax 5566f07771ccSwdenk- special characters ('$', ';') can be escaped by prefixing with '\', 5567f07771ccSwdenk for example: 5568fe126d8bSWolfgang Denk setenv bootcmd bootm \${address} 5569f07771ccSwdenk- You can also escape text by enclosing in single apostrophes, for example: 5570f07771ccSwdenk setenv addip 'setenv bootargs $bootargs ip=$ipaddr:$serverip:$gatewayip:$netmask:$hostname::off' 5571f07771ccSwdenk 5572f07771ccSwdenkHush shell: 5573f07771ccSwdenk----------- 5574f07771ccSwdenk 5575f07771ccSwdenk- similar to Bourne shell, with control structures like 5576f07771ccSwdenk if...then...else...fi, for...do...done; while...do...done, 5577f07771ccSwdenk until...do...done, ... 5578f07771ccSwdenk- supports environment ("global") variables (through setenv / saveenv 5579f07771ccSwdenk commands) and local shell variables (through standard shell syntax 5580f07771ccSwdenk "name=value"); only environment variables can be used with "run" 5581f07771ccSwdenk command 5582f07771ccSwdenk 5583f07771ccSwdenkGeneral rules: 5584f07771ccSwdenk-------------- 5585f07771ccSwdenk 5586f07771ccSwdenk(1) If a command line (or an environment variable executed by a "run" 5587f07771ccSwdenk command) contains several commands separated by semicolon, and 5588f07771ccSwdenk one of these commands fails, then the remaining commands will be 5589f07771ccSwdenk executed anyway. 5590f07771ccSwdenk 5591f07771ccSwdenk(2) If you execute several variables with one call to run (i. e. 559211ccc33fSMarcel Ziswiler calling run with a list of variables as arguments), any failing 5593f07771ccSwdenk command will cause "run" to terminate, i. e. the remaining 5594f07771ccSwdenk variables are not executed. 5595f07771ccSwdenk 5596c609719bSwdenkNote for Redundant Ethernet Interfaces: 5597c609719bSwdenk======================================= 5598c609719bSwdenk 559911ccc33fSMarcel ZiswilerSome boards come with redundant Ethernet interfaces; U-Boot supports 5600c609719bSwdenksuch configurations and is capable of automatic selection of a 56017152b1d0Swdenk"working" interface when needed. MAC assignment works as follows: 5602c609719bSwdenk 5603c609719bSwdenkNetwork interfaces are numbered eth0, eth1, eth2, ... Corresponding 5604c609719bSwdenkMAC addresses can be stored in the environment as "ethaddr" (=>eth0), 5605c609719bSwdenk"eth1addr" (=>eth1), "eth2addr", ... 5606c609719bSwdenk 5607c609719bSwdenkIf the network interface stores some valid MAC address (for instance 5608c609719bSwdenkin SROM), this is used as default address if there is NO correspon- 5609c609719bSwdenkding setting in the environment; if the corresponding environment 5610c609719bSwdenkvariable is set, this overrides the settings in the card; that means: 5611c609719bSwdenk 5612c609719bSwdenko If the SROM has a valid MAC address, and there is no address in the 5613c609719bSwdenk environment, the SROM's address is used. 5614c609719bSwdenk 5615c609719bSwdenko If there is no valid address in the SROM, and a definition in the 5616c609719bSwdenk environment exists, then the value from the environment variable is 5617c609719bSwdenk used. 5618c609719bSwdenk 5619c609719bSwdenko If both the SROM and the environment contain a MAC address, and 5620c609719bSwdenk both addresses are the same, this MAC address is used. 5621c609719bSwdenk 5622c609719bSwdenko If both the SROM and the environment contain a MAC address, and the 5623c609719bSwdenk addresses differ, the value from the environment is used and a 5624c609719bSwdenk warning is printed. 5625c609719bSwdenk 5626c609719bSwdenko If neither SROM nor the environment contain a MAC address, an error 5627c609719bSwdenk is raised. 5628c609719bSwdenk 5629ecee9324SBen WarrenIf Ethernet drivers implement the 'write_hwaddr' function, valid MAC addresses 5630ecee9324SBen Warrenwill be programmed into hardware as part of the initialization process. This 5631ecee9324SBen Warrenmay be skipped by setting the appropriate 'ethmacskip' environment variable. 5632ecee9324SBen WarrenThe naming convention is as follows: 5633ecee9324SBen Warren"ethmacskip" (=>eth0), "eth1macskip" (=>eth1) etc. 5634c609719bSwdenk 5635c609719bSwdenkImage Formats: 5636c609719bSwdenk============== 5637c609719bSwdenk 56383310c549SMarian BalakowiczU-Boot is capable of booting (and performing other auxiliary operations on) 56393310c549SMarian Balakowiczimages in two formats: 56403310c549SMarian Balakowicz 56413310c549SMarian BalakowiczNew uImage format (FIT) 56423310c549SMarian Balakowicz----------------------- 56433310c549SMarian Balakowicz 56443310c549SMarian BalakowiczFlexible and powerful format based on Flattened Image Tree -- FIT (similar 56453310c549SMarian Balakowiczto Flattened Device Tree). It allows the use of images with multiple 56463310c549SMarian Balakowiczcomponents (several kernels, ramdisks, etc.), with contents protected by 56473310c549SMarian BalakowiczSHA1, MD5 or CRC32. More details are found in the doc/uImage.FIT directory. 56483310c549SMarian Balakowicz 56493310c549SMarian Balakowicz 56503310c549SMarian BalakowiczOld uImage format 56513310c549SMarian Balakowicz----------------- 56523310c549SMarian Balakowicz 56533310c549SMarian BalakowiczOld image format is based on binary files which can be basically anything, 56543310c549SMarian Balakowiczpreceded by a special header; see the definitions in include/image.h for 56553310c549SMarian Balakowiczdetails; basically, the header defines the following image properties: 5656c609719bSwdenk 5657c609719bSwdenk* Target Operating System (Provisions for OpenBSD, NetBSD, FreeBSD, 5658c609719bSwdenk 4.4BSD, Linux, SVR4, Esix, Solaris, Irix, SCO, Dell, NCR, VxWorks, 5659f5ed9e39SPeter Tyser LynxOS, pSOS, QNX, RTEMS, INTEGRITY; 5660f5ed9e39SPeter Tyser Currently supported: Linux, NetBSD, VxWorks, QNX, RTEMS, LynxOS, 5661f5ed9e39SPeter Tyser INTEGRITY). 56627b64fef3SWolfgang Denk* Target CPU Architecture (Provisions for Alpha, ARM, AVR32, Intel x86, 5663afc1ce82SMacpaul Lin IA64, MIPS, NDS32, Nios II, PowerPC, IBM S390, SuperH, Sparc, Sparc 64 Bit; 5664afc1ce82SMacpaul Lin Currently supported: ARM, AVR32, Intel x86, MIPS, NDS32, Nios II, PowerPC). 5665c29fdfc1Swdenk* Compression Type (uncompressed, gzip, bzip2) 5666c609719bSwdenk* Load Address 5667c609719bSwdenk* Entry Point 5668c609719bSwdenk* Image Name 5669c609719bSwdenk* Image Timestamp 5670c609719bSwdenk 5671c609719bSwdenkThe header is marked by a special Magic Number, and both the header 5672c609719bSwdenkand the data portions of the image are secured against corruption by 5673c609719bSwdenkCRC32 checksums. 5674c609719bSwdenk 5675c609719bSwdenk 5676c609719bSwdenkLinux Support: 5677c609719bSwdenk============== 5678c609719bSwdenk 5679c609719bSwdenkAlthough U-Boot should support any OS or standalone application 56807152b1d0Swdenkeasily, the main focus has always been on Linux during the design of 5681c609719bSwdenkU-Boot. 5682c609719bSwdenk 5683c609719bSwdenkU-Boot includes many features that so far have been part of some 5684c609719bSwdenkspecial "boot loader" code within the Linux kernel. Also, any 5685c609719bSwdenk"initrd" images to be used are no longer part of one big Linux image; 5686c609719bSwdenkinstead, kernel and "initrd" are separate images. This implementation 56877152b1d0Swdenkserves several purposes: 5688c609719bSwdenk 5689c609719bSwdenk- the same features can be used for other OS or standalone 5690c609719bSwdenk applications (for instance: using compressed images to reduce the 5691c609719bSwdenk Flash memory footprint) 5692c609719bSwdenk 5693c609719bSwdenk- it becomes much easier to port new Linux kernel versions because 56947152b1d0Swdenk lots of low-level, hardware dependent stuff are done by U-Boot 5695c609719bSwdenk 5696c609719bSwdenk- the same Linux kernel image can now be used with different "initrd" 5697c609719bSwdenk images; of course this also means that different kernel images can 5698c609719bSwdenk be run with the same "initrd". This makes testing easier (you don't 5699c609719bSwdenk have to build a new "zImage.initrd" Linux image when you just 5700c609719bSwdenk change a file in your "initrd"). Also, a field-upgrade of the 5701c609719bSwdenk software is easier now. 5702c609719bSwdenk 5703c609719bSwdenk 5704c609719bSwdenkLinux HOWTO: 5705c609719bSwdenk============ 5706c609719bSwdenk 5707c609719bSwdenkPorting Linux to U-Boot based systems: 5708c609719bSwdenk--------------------------------------- 5709c609719bSwdenk 5710c609719bSwdenkU-Boot cannot save you from doing all the necessary modifications to 5711c609719bSwdenkconfigure the Linux device drivers for use with your target hardware 5712c609719bSwdenk(no, we don't intend to provide a full virtual machine interface to 5713c609719bSwdenkLinux :-). 5714c609719bSwdenk 5715a47a12beSStefan RoeseBut now you can ignore ALL boot loader code (in arch/powerpc/mbxboot). 5716c609719bSwdenk 5717c609719bSwdenkJust make sure your machine specific header file (for instance 5718c609719bSwdenkinclude/asm-ppc/tqm8xx.h) includes the same definition of the Board 57191dc30693SMarkus HeidelbergInformation structure as we define in include/asm-<arch>/u-boot.h, 57201dc30693SMarkus Heidelbergand make sure that your definition of IMAP_ADDR uses the same value 57216d0f6bcfSJean-Christophe PLAGNIOL-VILLARDas your U-Boot configuration in CONFIG_SYS_IMMR. 5722c609719bSwdenk 57232eb31b13SSimon GlassNote that U-Boot now has a driver model, a unified model for drivers. 57242eb31b13SSimon GlassIf you are adding a new driver, plumb it into driver model. If there 57252eb31b13SSimon Glassis no uclass available, you are encouraged to create one. See 57262eb31b13SSimon Glassdoc/driver-model. 57272eb31b13SSimon Glass 5728c609719bSwdenk 5729c609719bSwdenkConfiguring the Linux kernel: 5730c609719bSwdenk----------------------------- 5731c609719bSwdenk 5732c609719bSwdenkNo specific requirements for U-Boot. Make sure you have some root 5733c609719bSwdenkdevice (initial ramdisk, NFS) for your target system. 5734c609719bSwdenk 5735c609719bSwdenk 5736c609719bSwdenkBuilding a Linux Image: 5737c609719bSwdenk----------------------- 5738c609719bSwdenk 573924ee89b9SwdenkWith U-Boot, "normal" build targets like "zImage" or "bzImage" are 574024ee89b9Swdenknot used. If you use recent kernel source, a new build target 574124ee89b9Swdenk"uImage" will exist which automatically builds an image usable by 574224ee89b9SwdenkU-Boot. Most older kernels also have support for a "pImage" target, 574324ee89b9Swdenkwhich was introduced for our predecessor project PPCBoot and uses a 574424ee89b9Swdenk100% compatible format. 5745c609719bSwdenk 5746c609719bSwdenkExample: 5747c609719bSwdenk 5748ab584d67SHolger Freyther make TQM850L_defconfig 5749c609719bSwdenk make oldconfig 5750c609719bSwdenk make dep 575124ee89b9Swdenk make uImage 5752c609719bSwdenk 575324ee89b9SwdenkThe "uImage" build target uses a special tool (in 'tools/mkimage') to 575424ee89b9Swdenkencapsulate a compressed Linux kernel image with header information, 575524ee89b9SwdenkCRC32 checksum etc. for use with U-Boot. This is what we are doing: 5756c609719bSwdenk 575724ee89b9Swdenk* build a standard "vmlinux" kernel image (in ELF binary format): 575824ee89b9Swdenk 575924ee89b9Swdenk* convert the kernel into a raw binary image: 576024ee89b9Swdenk 576124ee89b9Swdenk ${CROSS_COMPILE}-objcopy -O binary \ 576224ee89b9Swdenk -R .note -R .comment \ 576324ee89b9Swdenk -S vmlinux linux.bin 576424ee89b9Swdenk 576524ee89b9Swdenk* compress the binary image: 576624ee89b9Swdenk 576724ee89b9Swdenk gzip -9 linux.bin 576824ee89b9Swdenk 576924ee89b9Swdenk* package compressed binary image for U-Boot: 577024ee89b9Swdenk 577124ee89b9Swdenk mkimage -A ppc -O linux -T kernel -C gzip \ 577224ee89b9Swdenk -a 0 -e 0 -n "Linux Kernel Image" \ 577324ee89b9Swdenk -d linux.bin.gz uImage 577424ee89b9Swdenk 577524ee89b9Swdenk 577624ee89b9SwdenkThe "mkimage" tool can also be used to create ramdisk images for use 577724ee89b9Swdenkwith U-Boot, either separated from the Linux kernel image, or 577824ee89b9Swdenkcombined into one file. "mkimage" encapsulates the images with a 64 577924ee89b9Swdenkbyte header containing information about target architecture, 578024ee89b9Swdenkoperating system, image type, compression method, entry points, time 578124ee89b9Swdenkstamp, CRC32 checksums, etc. 578224ee89b9Swdenk 578324ee89b9Swdenk"mkimage" can be called in two ways: to verify existing images and 578424ee89b9Swdenkprint the header information, or to build new images. 5785c609719bSwdenk 5786c609719bSwdenkIn the first form (with "-l" option) mkimage lists the information 5787c609719bSwdenkcontained in the header of an existing U-Boot image; this includes 5788c609719bSwdenkchecksum verification: 5789c609719bSwdenk 5790c609719bSwdenk tools/mkimage -l image 5791c609719bSwdenk -l ==> list image header information 5792c609719bSwdenk 5793c609719bSwdenkThe second form (with "-d" option) is used to build a U-Boot image 5794c609719bSwdenkfrom a "data file" which is used as image payload: 5795c609719bSwdenk 5796c609719bSwdenk tools/mkimage -A arch -O os -T type -C comp -a addr -e ep \ 5797c609719bSwdenk -n name -d data_file image 5798c609719bSwdenk -A ==> set architecture to 'arch' 5799c609719bSwdenk -O ==> set operating system to 'os' 5800c609719bSwdenk -T ==> set image type to 'type' 5801c609719bSwdenk -C ==> set compression type 'comp' 5802c609719bSwdenk -a ==> set load address to 'addr' (hex) 5803c609719bSwdenk -e ==> set entry point to 'ep' (hex) 5804c609719bSwdenk -n ==> set image name to 'name' 5805c609719bSwdenk -d ==> use image data from 'datafile' 5806c609719bSwdenk 580769459791SwdenkRight now, all Linux kernels for PowerPC systems use the same load 580869459791Swdenkaddress (0x00000000), but the entry point address depends on the 580969459791Swdenkkernel version: 5810c609719bSwdenk 5811c609719bSwdenk- 2.2.x kernels have the entry point at 0x0000000C, 581224ee89b9Swdenk- 2.3.x and later kernels have the entry point at 0x00000000. 5813c609719bSwdenk 5814c609719bSwdenkSo a typical call to build a U-Boot image would read: 5815c609719bSwdenk 581624ee89b9Swdenk -> tools/mkimage -n '2.4.4 kernel for TQM850L' \ 581724ee89b9Swdenk > -A ppc -O linux -T kernel -C gzip -a 0 -e 0 \ 5818a47a12beSStefan Roese > -d /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux.gz \ 581924ee89b9Swdenk > examples/uImage.TQM850L 582024ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5821c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5822c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5823c609719bSwdenk Data Size: 335725 Bytes = 327.86 kB = 0.32 MB 5824c609719bSwdenk Load Address: 0x00000000 582524ee89b9Swdenk Entry Point: 0x00000000 5826c609719bSwdenk 5827c609719bSwdenkTo verify the contents of the image (or check for corruption): 5828c609719bSwdenk 582924ee89b9Swdenk -> tools/mkimage -l examples/uImage.TQM850L 583024ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5831c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5832c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5833c609719bSwdenk Data Size: 335725 Bytes = 327.86 kB = 0.32 MB 5834c609719bSwdenk Load Address: 0x00000000 583524ee89b9Swdenk Entry Point: 0x00000000 5836c609719bSwdenk 5837c609719bSwdenkNOTE: for embedded systems where boot time is critical you can trade 5838c609719bSwdenkspeed for memory and install an UNCOMPRESSED image instead: this 5839c609719bSwdenkneeds more space in Flash, but boots much faster since it does not 5840c609719bSwdenkneed to be uncompressed: 5841c609719bSwdenk 5842a47a12beSStefan Roese -> gunzip /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux.gz 584324ee89b9Swdenk -> tools/mkimage -n '2.4.4 kernel for TQM850L' \ 584424ee89b9Swdenk > -A ppc -O linux -T kernel -C none -a 0 -e 0 \ 5845a47a12beSStefan Roese > -d /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux \ 584624ee89b9Swdenk > examples/uImage.TQM850L-uncompressed 584724ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5848c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5849c609719bSwdenk Image Type: PowerPC Linux Kernel Image (uncompressed) 5850c609719bSwdenk Data Size: 792160 Bytes = 773.59 kB = 0.76 MB 5851c609719bSwdenk Load Address: 0x00000000 585224ee89b9Swdenk Entry Point: 0x00000000 5853c609719bSwdenk 5854c609719bSwdenk 5855c609719bSwdenkSimilar you can build U-Boot images from a 'ramdisk.image.gz' file 5856c609719bSwdenkwhen your kernel is intended to use an initial ramdisk: 5857c609719bSwdenk 5858c609719bSwdenk -> tools/mkimage -n 'Simple Ramdisk Image' \ 5859c609719bSwdenk > -A ppc -O linux -T ramdisk -C gzip \ 5860c609719bSwdenk > -d /LinuxPPC/images/SIMPLE-ramdisk.image.gz examples/simple-initrd 5861c609719bSwdenk Image Name: Simple Ramdisk Image 5862c609719bSwdenk Created: Wed Jan 12 14:01:50 2000 5863c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5864c609719bSwdenk Data Size: 566530 Bytes = 553.25 kB = 0.54 MB 5865c609719bSwdenk Load Address: 0x00000000 5866c609719bSwdenk Entry Point: 0x00000000 5867c609719bSwdenk 5868a804b5ceSGuilherme Maciel FerreiraThe "dumpimage" is a tool to disassemble images built by mkimage. Its "-i" 5869a804b5ceSGuilherme Maciel Ferreiraoption performs the converse operation of the mkimage's second form (the "-d" 5870a804b5ceSGuilherme Maciel Ferreiraoption). Given an image built by mkimage, the dumpimage extracts a "data file" 5871a804b5ceSGuilherme Maciel Ferreirafrom the image: 5872a804b5ceSGuilherme Maciel Ferreira 5873a804b5ceSGuilherme Maciel Ferreira tools/dumpimage -i image -p position data_file 5874a804b5ceSGuilherme Maciel Ferreira -i ==> extract from the 'image' a specific 'data_file', \ 5875a804b5ceSGuilherme Maciel Ferreira indexed by 'position' 5876a804b5ceSGuilherme Maciel Ferreira 5877c609719bSwdenk 5878c609719bSwdenkInstalling a Linux Image: 5879c609719bSwdenk------------------------- 5880c609719bSwdenk 5881c609719bSwdenkTo downloading a U-Boot image over the serial (console) interface, 5882c609719bSwdenkyou must convert the image to S-Record format: 5883c609719bSwdenk 5884c609719bSwdenk objcopy -I binary -O srec examples/image examples/image.srec 5885c609719bSwdenk 5886c609719bSwdenkThe 'objcopy' does not understand the information in the U-Boot 5887c609719bSwdenkimage header, so the resulting S-Record file will be relative to 5888c609719bSwdenkaddress 0x00000000. To load it to a given address, you need to 5889c609719bSwdenkspecify the target address as 'offset' parameter with the 'loads' 5890c609719bSwdenkcommand. 5891c609719bSwdenk 5892c609719bSwdenkExample: install the image to address 0x40100000 (which on the 5893c609719bSwdenkTQM8xxL is in the first Flash bank): 5894c609719bSwdenk 5895c609719bSwdenk => erase 40100000 401FFFFF 5896c609719bSwdenk 5897c609719bSwdenk .......... done 5898c609719bSwdenk Erased 8 sectors 5899c609719bSwdenk 5900c609719bSwdenk => loads 40100000 5901c609719bSwdenk ## Ready for S-Record download ... 5902c609719bSwdenk ~>examples/image.srec 5903c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 12 13 ... 5904c609719bSwdenk ... 5905c609719bSwdenk 15989 15990 15991 15992 5906c609719bSwdenk [file transfer complete] 5907c609719bSwdenk [connected] 5908c609719bSwdenk ## Start Addr = 0x00000000 5909c609719bSwdenk 5910c609719bSwdenk 5911c609719bSwdenkYou can check the success of the download using the 'iminfo' command; 5912c609719bSwdenkthis includes a checksum verification so you can be sure no data 5913c609719bSwdenkcorruption happened: 5914c609719bSwdenk 5915c609719bSwdenk => imi 40100000 5916c609719bSwdenk 5917c609719bSwdenk ## Checking Image at 40100000 ... 5918c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5919c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5920c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5921c609719bSwdenk Load Address: 00000000 5922c609719bSwdenk Entry Point: 0000000c 5923c609719bSwdenk Verifying Checksum ... OK 5924c609719bSwdenk 5925c609719bSwdenk 5926c609719bSwdenkBoot Linux: 5927c609719bSwdenk----------- 5928c609719bSwdenk 5929c609719bSwdenkThe "bootm" command is used to boot an application that is stored in 5930c609719bSwdenkmemory (RAM or Flash). In case of a Linux kernel image, the contents 5931c609719bSwdenkof the "bootargs" environment variable is passed to the kernel as 5932c609719bSwdenkparameters. You can check and modify this variable using the 5933c609719bSwdenk"printenv" and "setenv" commands: 5934c609719bSwdenk 5935c609719bSwdenk 5936c609719bSwdenk => printenv bootargs 5937c609719bSwdenk bootargs=root=/dev/ram 5938c609719bSwdenk 5939c609719bSwdenk => setenv bootargs root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5940c609719bSwdenk 5941c609719bSwdenk => printenv bootargs 5942c609719bSwdenk bootargs=root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5943c609719bSwdenk 5944c609719bSwdenk => bootm 40020000 5945c609719bSwdenk ## Booting Linux kernel at 40020000 ... 5946c609719bSwdenk Image Name: 2.2.13 for NFS on TQM850L 5947c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5948c609719bSwdenk Data Size: 381681 Bytes = 372 kB = 0 MB 5949c609719bSwdenk Load Address: 00000000 5950c609719bSwdenk Entry Point: 0000000c 5951c609719bSwdenk Verifying Checksum ... OK 5952c609719bSwdenk Uncompressing Kernel Image ... OK 5953c609719bSwdenk Linux version 2.2.13 (wd@denx.local.net) (gcc version 2.95.2 19991024 (release)) #1 Wed Jul 19 02:35:17 MEST 2000 5954c609719bSwdenk Boot arguments: root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5955c609719bSwdenk time_init: decrementer frequency = 187500000/60 5956c609719bSwdenk Calibrating delay loop... 49.77 BogoMIPS 5957c609719bSwdenk Memory: 15208k available (700k kernel code, 444k data, 32k init) [c0000000,c1000000] 5958c609719bSwdenk ... 5959c609719bSwdenk 596011ccc33fSMarcel ZiswilerIf you want to boot a Linux kernel with initial RAM disk, you pass 59617152b1d0Swdenkthe memory addresses of both the kernel and the initrd image (PPBCOOT 5962c609719bSwdenkformat!) to the "bootm" command: 5963c609719bSwdenk 5964c609719bSwdenk => imi 40100000 40200000 5965c609719bSwdenk 5966c609719bSwdenk ## Checking Image at 40100000 ... 5967c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5968c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5969c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5970c609719bSwdenk Load Address: 00000000 5971c609719bSwdenk Entry Point: 0000000c 5972c609719bSwdenk Verifying Checksum ... OK 5973c609719bSwdenk 5974c609719bSwdenk ## Checking Image at 40200000 ... 5975c609719bSwdenk Image Name: Simple Ramdisk Image 5976c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5977c609719bSwdenk Data Size: 566530 Bytes = 553 kB = 0 MB 5978c609719bSwdenk Load Address: 00000000 5979c609719bSwdenk Entry Point: 00000000 5980c609719bSwdenk Verifying Checksum ... OK 5981c609719bSwdenk 5982c609719bSwdenk => bootm 40100000 40200000 5983c609719bSwdenk ## Booting Linux kernel at 40100000 ... 5984c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5985c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5986c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5987c609719bSwdenk Load Address: 00000000 5988c609719bSwdenk Entry Point: 0000000c 5989c609719bSwdenk Verifying Checksum ... OK 5990c609719bSwdenk Uncompressing Kernel Image ... OK 5991c609719bSwdenk ## Loading RAMDisk Image at 40200000 ... 5992c609719bSwdenk Image Name: Simple Ramdisk Image 5993c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5994c609719bSwdenk Data Size: 566530 Bytes = 553 kB = 0 MB 5995c609719bSwdenk Load Address: 00000000 5996c609719bSwdenk Entry Point: 00000000 5997c609719bSwdenk Verifying Checksum ... OK 5998c609719bSwdenk Loading Ramdisk ... OK 5999c609719bSwdenk Linux version 2.2.13 (wd@denx.local.net) (gcc version 2.95.2 19991024 (release)) #1 Wed Jul 19 02:32:08 MEST 2000 6000c609719bSwdenk Boot arguments: root=/dev/ram 6001c609719bSwdenk time_init: decrementer frequency = 187500000/60 6002c609719bSwdenk Calibrating delay loop... 49.77 BogoMIPS 6003c609719bSwdenk ... 6004c609719bSwdenk RAMDISK: Compressed image found at block 0 6005c609719bSwdenk VFS: Mounted root (ext2 filesystem). 6006c609719bSwdenk 6007c609719bSwdenk bash# 6008c609719bSwdenk 60090267768eSMatthew McClintockBoot Linux and pass a flat device tree: 60100267768eSMatthew McClintock----------- 60110267768eSMatthew McClintock 60120267768eSMatthew McClintockFirst, U-Boot must be compiled with the appropriate defines. See the section 60130267768eSMatthew McClintocktitled "Linux Kernel Interface" above for a more in depth explanation. The 60140267768eSMatthew McClintockfollowing is an example of how to start a kernel and pass an updated 60150267768eSMatthew McClintockflat device tree: 60160267768eSMatthew McClintock 60170267768eSMatthew McClintock=> print oftaddr 60180267768eSMatthew McClintockoftaddr=0x300000 60190267768eSMatthew McClintock=> print oft 60200267768eSMatthew McClintockoft=oftrees/mpc8540ads.dtb 60210267768eSMatthew McClintock=> tftp $oftaddr $oft 60220267768eSMatthew McClintockSpeed: 1000, full duplex 60230267768eSMatthew McClintockUsing TSEC0 device 60240267768eSMatthew McClintockTFTP from server 192.168.1.1; our IP address is 192.168.1.101 60250267768eSMatthew McClintockFilename 'oftrees/mpc8540ads.dtb'. 60260267768eSMatthew McClintockLoad address: 0x300000 60270267768eSMatthew McClintockLoading: # 60280267768eSMatthew McClintockdone 60290267768eSMatthew McClintockBytes transferred = 4106 (100a hex) 60300267768eSMatthew McClintock=> tftp $loadaddr $bootfile 60310267768eSMatthew McClintockSpeed: 1000, full duplex 60320267768eSMatthew McClintockUsing TSEC0 device 60330267768eSMatthew McClintockTFTP from server 192.168.1.1; our IP address is 192.168.1.2 60340267768eSMatthew McClintockFilename 'uImage'. 60350267768eSMatthew McClintockLoad address: 0x200000 60360267768eSMatthew McClintockLoading:############ 60370267768eSMatthew McClintockdone 60380267768eSMatthew McClintockBytes transferred = 1029407 (fb51f hex) 60390267768eSMatthew McClintock=> print loadaddr 60400267768eSMatthew McClintockloadaddr=200000 60410267768eSMatthew McClintock=> print oftaddr 60420267768eSMatthew McClintockoftaddr=0x300000 60430267768eSMatthew McClintock=> bootm $loadaddr - $oftaddr 60440267768eSMatthew McClintock## Booting image at 00200000 ... 60450267768eSMatthew McClintock Image Name: Linux-2.6.17-dirty 60460267768eSMatthew McClintock Image Type: PowerPC Linux Kernel Image (gzip compressed) 60470267768eSMatthew McClintock Data Size: 1029343 Bytes = 1005.2 kB 60480267768eSMatthew McClintock Load Address: 00000000 60490267768eSMatthew McClintock Entry Point: 00000000 60500267768eSMatthew McClintock Verifying Checksum ... OK 60510267768eSMatthew McClintock Uncompressing Kernel Image ... OK 60520267768eSMatthew McClintockBooting using flat device tree at 0x300000 60530267768eSMatthew McClintockUsing MPC85xx ADS machine description 60540267768eSMatthew McClintockMemory CAM mapping: CAM0=256Mb, CAM1=256Mb, CAM2=0Mb residual: 0Mb 60550267768eSMatthew McClintock[snip] 60560267768eSMatthew McClintock 60570267768eSMatthew McClintock 60586069ff26SwdenkMore About U-Boot Image Types: 60596069ff26Swdenk------------------------------ 60606069ff26Swdenk 60616069ff26SwdenkU-Boot supports the following image types: 60626069ff26Swdenk 60636069ff26Swdenk "Standalone Programs" are directly runnable in the environment 60646069ff26Swdenk provided by U-Boot; it is expected that (if they behave 60656069ff26Swdenk well) you can continue to work in U-Boot after return from 60666069ff26Swdenk the Standalone Program. 60676069ff26Swdenk "OS Kernel Images" are usually images of some Embedded OS which 60686069ff26Swdenk will take over control completely. Usually these programs 60696069ff26Swdenk will install their own set of exception handlers, device 60706069ff26Swdenk drivers, set up the MMU, etc. - this means, that you cannot 60716069ff26Swdenk expect to re-enter U-Boot except by resetting the CPU. 60726069ff26Swdenk "RAMDisk Images" are more or less just data blocks, and their 60736069ff26Swdenk parameters (address, size) are passed to an OS kernel that is 60746069ff26Swdenk being started. 60756069ff26Swdenk "Multi-File Images" contain several images, typically an OS 60766069ff26Swdenk (Linux) kernel image and one or more data images like 60776069ff26Swdenk RAMDisks. This construct is useful for instance when you want 60786069ff26Swdenk to boot over the network using BOOTP etc., where the boot 60796069ff26Swdenk server provides just a single image file, but you want to get 60806069ff26Swdenk for instance an OS kernel and a RAMDisk image. 60816069ff26Swdenk 60826069ff26Swdenk "Multi-File Images" start with a list of image sizes, each 60836069ff26Swdenk image size (in bytes) specified by an "uint32_t" in network 60846069ff26Swdenk byte order. This list is terminated by an "(uint32_t)0". 60856069ff26Swdenk Immediately after the terminating 0 follow the images, one by 60866069ff26Swdenk one, all aligned on "uint32_t" boundaries (size rounded up to 60876069ff26Swdenk a multiple of 4 bytes). 60886069ff26Swdenk 60896069ff26Swdenk "Firmware Images" are binary images containing firmware (like 60906069ff26Swdenk U-Boot or FPGA images) which usually will be programmed to 60916069ff26Swdenk flash memory. 60926069ff26Swdenk 60936069ff26Swdenk "Script files" are command sequences that will be executed by 60946069ff26Swdenk U-Boot's command interpreter; this feature is especially 60956069ff26Swdenk useful when you configure U-Boot to use a real shell (hush) 60966069ff26Swdenk as command interpreter. 60976069ff26Swdenk 609844f074c7SMarek VasutBooting the Linux zImage: 609944f074c7SMarek Vasut------------------------- 610044f074c7SMarek Vasut 610144f074c7SMarek VasutOn some platforms, it's possible to boot Linux zImage. This is done 610244f074c7SMarek Vasutusing the "bootz" command. The syntax of "bootz" command is the same 610344f074c7SMarek Vasutas the syntax of "bootm" command. 610444f074c7SMarek Vasut 61058ac28563STom RiniNote, defining the CONFIG_SUPPORT_RAW_INITRD allows user to supply 6106017e1f3fSMarek Vasutkernel with raw initrd images. The syntax is slightly different, the 6107017e1f3fSMarek Vasutaddress of the initrd must be augmented by it's size, in the following 6108017e1f3fSMarek Vasutformat: "<initrd addres>:<initrd size>". 6109017e1f3fSMarek Vasut 6110c609719bSwdenk 6111c609719bSwdenkStandalone HOWTO: 6112c609719bSwdenk================= 6113c609719bSwdenk 6114c609719bSwdenkOne of the features of U-Boot is that you can dynamically load and 6115c609719bSwdenkrun "standalone" applications, which can use some resources of 6116c609719bSwdenkU-Boot like console I/O functions or interrupt services. 6117c609719bSwdenk 6118c609719bSwdenkTwo simple examples are included with the sources: 6119c609719bSwdenk 6120c609719bSwdenk"Hello World" Demo: 6121c609719bSwdenk------------------- 6122c609719bSwdenk 6123c609719bSwdenk'examples/hello_world.c' contains a small "Hello World" Demo 6124c609719bSwdenkapplication; it is automatically compiled when you build U-Boot. 6125c609719bSwdenkIt's configured to run at address 0x00040004, so you can play with it 6126c609719bSwdenklike that: 6127c609719bSwdenk 6128c609719bSwdenk => loads 6129c609719bSwdenk ## Ready for S-Record download ... 6130c609719bSwdenk ~>examples/hello_world.srec 6131c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 ... 6132c609719bSwdenk [file transfer complete] 6133c609719bSwdenk [connected] 6134c609719bSwdenk ## Start Addr = 0x00040004 6135c609719bSwdenk 6136c609719bSwdenk => go 40004 Hello World! This is a test. 6137c609719bSwdenk ## Starting application at 0x00040004 ... 6138c609719bSwdenk Hello World 6139c609719bSwdenk argc = 7 6140c609719bSwdenk argv[0] = "40004" 6141c609719bSwdenk argv[1] = "Hello" 6142c609719bSwdenk argv[2] = "World!" 6143c609719bSwdenk argv[3] = "This" 6144c609719bSwdenk argv[4] = "is" 6145c609719bSwdenk argv[5] = "a" 6146c609719bSwdenk argv[6] = "test." 6147c609719bSwdenk argv[7] = "<NULL>" 6148c609719bSwdenk Hit any key to exit ... 6149c609719bSwdenk 6150c609719bSwdenk ## Application terminated, rc = 0x0 6151c609719bSwdenk 6152c609719bSwdenkAnother example, which demonstrates how to register a CPM interrupt 6153c609719bSwdenkhandler with the U-Boot code, can be found in 'examples/timer.c'. 6154c609719bSwdenkHere, a CPM timer is set up to generate an interrupt every second. 6155c609719bSwdenkThe interrupt service routine is trivial, just printing a '.' 6156c609719bSwdenkcharacter, but this is just a demo program. The application can be 6157c609719bSwdenkcontrolled by the following keys: 6158c609719bSwdenk 6159c609719bSwdenk ? - print current values og the CPM Timer registers 6160c609719bSwdenk b - enable interrupts and start timer 6161c609719bSwdenk e - stop timer and disable interrupts 6162c609719bSwdenk q - quit application 6163c609719bSwdenk 6164c609719bSwdenk => loads 6165c609719bSwdenk ## Ready for S-Record download ... 6166c609719bSwdenk ~>examples/timer.srec 6167c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 ... 6168c609719bSwdenk [file transfer complete] 6169c609719bSwdenk [connected] 6170c609719bSwdenk ## Start Addr = 0x00040004 6171c609719bSwdenk 6172c609719bSwdenk => go 40004 6173c609719bSwdenk ## Starting application at 0x00040004 ... 6174c609719bSwdenk TIMERS=0xfff00980 6175c609719bSwdenk Using timer 1 6176c609719bSwdenk tgcr @ 0xfff00980, tmr @ 0xfff00990, trr @ 0xfff00994, tcr @ 0xfff00998, tcn @ 0xfff0099c, ter @ 0xfff009b0 6177c609719bSwdenk 6178c609719bSwdenkHit 'b': 6179c609719bSwdenk [q, b, e, ?] Set interval 1000000 us 6180c609719bSwdenk Enabling timer 6181c609719bSwdenkHit '?': 6182c609719bSwdenk [q, b, e, ?] ........ 6183c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0xef6, ter=0x0 6184c609719bSwdenkHit '?': 6185c609719bSwdenk [q, b, e, ?] . 6186c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x2ad4, ter=0x0 6187c609719bSwdenkHit '?': 6188c609719bSwdenk [q, b, e, ?] . 6189c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x1efc, ter=0x0 6190c609719bSwdenkHit '?': 6191c609719bSwdenk [q, b, e, ?] . 6192c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x169d, ter=0x0 6193c609719bSwdenkHit 'e': 6194c609719bSwdenk [q, b, e, ?] ...Stopping timer 6195c609719bSwdenkHit 'q': 6196c609719bSwdenk [q, b, e, ?] ## Application terminated, rc = 0x0 6197c609719bSwdenk 6198c609719bSwdenk 619985ec0bccSwdenkMinicom warning: 620085ec0bccSwdenk================ 620185ec0bccSwdenk 62027152b1d0SwdenkOver time, many people have reported problems when trying to use the 620385ec0bccSwdenk"minicom" terminal emulation program for serial download. I (wd) 620485ec0bccSwdenkconsider minicom to be broken, and recommend not to use it. Under 6205f07771ccSwdenkUnix, I recommend to use C-Kermit for general purpose use (and 620685ec0bccSwdenkespecially for kermit binary protocol download ("loadb" command), and 6207e53515a2SKarl O. Pincuse "cu" for S-Record download ("loads" command). See 6208e53515a2SKarl O. Pinchttp://www.denx.de/wiki/view/DULG/SystemSetup#Section_4.3. 6209e53515a2SKarl O. Pincfor help with kermit. 6210e53515a2SKarl O. Pinc 621185ec0bccSwdenk 621252f52c14SwdenkNevertheless, if you absolutely want to use it try adding this 621352f52c14Swdenkconfiguration to your "File transfer protocols" section: 621452f52c14Swdenk 621552f52c14Swdenk Name Program Name U/D FullScr IO-Red. Multi 621652f52c14Swdenk X kermit /usr/bin/kermit -i -l %l -s Y U Y N N 621752f52c14Swdenk Y kermit /usr/bin/kermit -i -l %l -r N D Y N N 621852f52c14Swdenk 621952f52c14Swdenk 6220c609719bSwdenkNetBSD Notes: 6221c609719bSwdenk============= 6222c609719bSwdenk 6223c609719bSwdenkStarting at version 0.9.2, U-Boot supports NetBSD both as host 6224c609719bSwdenk(build U-Boot) and target system (boots NetBSD/mpc8xx). 6225c609719bSwdenk 6226c609719bSwdenkBuilding requires a cross environment; it is known to work on 6227c609719bSwdenkNetBSD/i386 with the cross-powerpc-netbsd-1.3 package (you will also 6228c609719bSwdenkneed gmake since the Makefiles are not compatible with BSD make). 6229c609719bSwdenkNote that the cross-powerpc package does not install include files; 6230c609719bSwdenkattempting to build U-Boot will fail because <machine/ansi.h> is 6231c609719bSwdenkmissing. This file has to be installed and patched manually: 6232c609719bSwdenk 6233c609719bSwdenk # cd /usr/pkg/cross/powerpc-netbsd/include 6234c609719bSwdenk # mkdir powerpc 6235c609719bSwdenk # ln -s powerpc machine 6236c609719bSwdenk # cp /usr/src/sys/arch/powerpc/include/ansi.h powerpc/ansi.h 6237c609719bSwdenk # ${EDIT} powerpc/ansi.h ## must remove __va_list, _BSD_VA_LIST 6238c609719bSwdenk 6239c609719bSwdenkNative builds *don't* work due to incompatibilities between native 6240c609719bSwdenkand U-Boot include files. 6241c609719bSwdenk 6242c609719bSwdenkBooting assumes that (the first part of) the image booted is a 6243c609719bSwdenkstage-2 loader which in turn loads and then invokes the kernel 6244c609719bSwdenkproper. Loader sources will eventually appear in the NetBSD source 6245c609719bSwdenktree (probably in sys/arc/mpc8xx/stand/u-boot_stage2/); in the 62462a8af187Swdenkmeantime, see ftp://ftp.denx.de/pub/u-boot/ppcboot_stage2.tar.gz 6247c609719bSwdenk 6248c609719bSwdenk 6249c609719bSwdenkImplementation Internals: 6250c609719bSwdenk========================= 6251c609719bSwdenk 6252c609719bSwdenkThe following is not intended to be a complete description of every 6253c609719bSwdenkimplementation detail. However, it should help to understand the 6254c609719bSwdenkinner workings of U-Boot and make it easier to port it to custom 6255c609719bSwdenkhardware. 6256c609719bSwdenk 6257c609719bSwdenk 6258c609719bSwdenkInitial Stack, Global Data: 6259c609719bSwdenk--------------------------- 6260c609719bSwdenk 6261c609719bSwdenkThe implementation of U-Boot is complicated by the fact that U-Boot 6262c609719bSwdenkstarts running out of ROM (flash memory), usually without access to 6263c609719bSwdenksystem RAM (because the memory controller is not initialized yet). 6264c609719bSwdenkThis means that we don't have writable Data or BSS segments, and BSS 6265c609719bSwdenkis not initialized as zero. To be able to get a C environment working 6266c609719bSwdenkat all, we have to allocate at least a minimal stack. Implementation 6267c609719bSwdenkoptions for this are defined and restricted by the CPU used: Some CPU 6268c609719bSwdenkmodels provide on-chip memory (like the IMMR area on MPC8xx and 6269c609719bSwdenkMPC826x processors), on others (parts of) the data cache can be 6270c609719bSwdenklocked as (mis-) used as memory, etc. 6271c609719bSwdenk 62727152b1d0Swdenk Chris Hallinan posted a good summary of these issues to the 62730668236bSWolfgang Denk U-Boot mailing list: 627443d9616cSwdenk 627543d9616cSwdenk Subject: RE: [U-Boot-Users] RE: More On Memory Bank x (nothingness)? 627643d9616cSwdenk From: "Chris Hallinan" <clh@net1plus.com> 627743d9616cSwdenk Date: Mon, 10 Feb 2003 16:43:46 -0500 (22:43 MET) 627843d9616cSwdenk ... 627943d9616cSwdenk 628043d9616cSwdenk Correct me if I'm wrong, folks, but the way I understand it 628143d9616cSwdenk is this: Using DCACHE as initial RAM for Stack, etc, does not 628243d9616cSwdenk require any physical RAM backing up the cache. The cleverness 628343d9616cSwdenk is that the cache is being used as a temporary supply of 628443d9616cSwdenk necessary storage before the SDRAM controller is setup. It's 628511ccc33fSMarcel Ziswiler beyond the scope of this list to explain the details, but you 628643d9616cSwdenk can see how this works by studying the cache architecture and 628743d9616cSwdenk operation in the architecture and processor-specific manuals. 628843d9616cSwdenk 628943d9616cSwdenk OCM is On Chip Memory, which I believe the 405GP has 4K. It 629043d9616cSwdenk is another option for the system designer to use as an 629111ccc33fSMarcel Ziswiler initial stack/RAM area prior to SDRAM being available. Either 629243d9616cSwdenk option should work for you. Using CS 4 should be fine if your 629343d9616cSwdenk board designers haven't used it for something that would 629443d9616cSwdenk cause you grief during the initial boot! It is frequently not 629543d9616cSwdenk used. 629643d9616cSwdenk 62976d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_RAM_ADDR should be somewhere that won't interfere 629843d9616cSwdenk with your processor/board/system design. The default value 629943d9616cSwdenk you will find in any recent u-boot distribution in 63008a316c9bSStefan Roese walnut.h should work for you. I'd set it to a value larger 630143d9616cSwdenk than your SDRAM module. If you have a 64MB SDRAM module, set 630243d9616cSwdenk it above 400_0000. Just make sure your board has no resources 630343d9616cSwdenk that are supposed to respond to that address! That code in 630443d9616cSwdenk start.S has been around a while and should work as is when 630543d9616cSwdenk you get the config right. 630643d9616cSwdenk 630743d9616cSwdenk -Chris Hallinan 630843d9616cSwdenk DS4.COM, Inc. 630943d9616cSwdenk 6310c609719bSwdenkIt is essential to remember this, since it has some impact on the C 6311c609719bSwdenkcode for the initialization procedures: 6312c609719bSwdenk 6313c609719bSwdenk* Initialized global data (data segment) is read-only. Do not attempt 6314c609719bSwdenk to write it. 6315c609719bSwdenk 631611ccc33fSMarcel Ziswiler* Do not use any uninitialized global data (or implicitely initialized 6317c609719bSwdenk as zero data - BSS segment) at all - this is undefined, initiali- 63187152b1d0Swdenk zation is performed later (when relocating to RAM). 6319c609719bSwdenk 6320c609719bSwdenk* Stack space is very limited. Avoid big data buffers or things like 6321c609719bSwdenk that. 6322c609719bSwdenk 6323c609719bSwdenkHaving only the stack as writable memory limits means we cannot use 6324c609719bSwdenknormal global data to share information beween the code. But it 6325c609719bSwdenkturned out that the implementation of U-Boot can be greatly 6326c609719bSwdenksimplified by making a global data structure (gd_t) available to all 6327c609719bSwdenkfunctions. We could pass a pointer to this data as argument to _all_ 6328c609719bSwdenkfunctions, but this would bloat the code. Instead we use a feature of 6329c609719bSwdenkthe GCC compiler (Global Register Variables) to share the data: we 6330c609719bSwdenkplace a pointer (gd) to the global data into a register which we 6331c609719bSwdenkreserve for this purpose. 6332c609719bSwdenk 63337152b1d0SwdenkWhen choosing a register for such a purpose we are restricted by the 6334c609719bSwdenkrelevant (E)ABI specifications for the current architecture, and by 6335c609719bSwdenkGCC's implementation. 6336c609719bSwdenk 6337c609719bSwdenkFor PowerPC, the following registers have specific use: 6338c609719bSwdenk R1: stack pointer 6339e7670f6cSWolfgang Denk R2: reserved for system use 6340c609719bSwdenk R3-R4: parameter passing and return values 6341c609719bSwdenk R5-R10: parameter passing 6342c609719bSwdenk R13: small data area pointer 6343c609719bSwdenk R30: GOT pointer 6344c609719bSwdenk R31: frame pointer 6345c609719bSwdenk 6346e6bee808SJoakim Tjernlund (U-Boot also uses R12 as internal GOT pointer. r12 6347e6bee808SJoakim Tjernlund is a volatile register so r12 needs to be reset when 6348e6bee808SJoakim Tjernlund going back and forth between asm and C) 6349c609719bSwdenk 6350e7670f6cSWolfgang Denk ==> U-Boot will use R2 to hold a pointer to the global data 6351c609719bSwdenk 6352c609719bSwdenk Note: on PPC, we could use a static initializer (since the 6353c609719bSwdenk address of the global data structure is known at compile time), 6354c609719bSwdenk but it turned out that reserving a register results in somewhat 6355c609719bSwdenk smaller code - although the code savings are not that big (on 6356c609719bSwdenk average for all boards 752 bytes for the whole U-Boot image, 6357c609719bSwdenk 624 text + 127 data). 6358c609719bSwdenk 6359c4db335cSRobin GetzOn Blackfin, the normal C ABI (except for P3) is followed as documented here: 63604c58eb55SMike Frysinger http://docs.blackfin.uclinux.org/doku.php?id=application_binary_interface 63614c58eb55SMike Frysinger 6362c4db335cSRobin Getz ==> U-Boot will use P3 to hold a pointer to the global data 63634c58eb55SMike Frysinger 6364c609719bSwdenkOn ARM, the following registers are used: 6365c609719bSwdenk 6366c609719bSwdenk R0: function argument word/integer result 6367c609719bSwdenk R1-R3: function argument word 636812eba1b4SJeroen Hofstee R9: platform specific 636912eba1b4SJeroen Hofstee R10: stack limit (used only if stack checking is enabled) 6370c609719bSwdenk R11: argument (frame) pointer 6371c609719bSwdenk R12: temporary workspace 6372c609719bSwdenk R13: stack pointer 6373c609719bSwdenk R14: link register 6374c609719bSwdenk R15: program counter 6375c609719bSwdenk 637612eba1b4SJeroen Hofstee ==> U-Boot will use R9 to hold a pointer to the global data 637712eba1b4SJeroen Hofstee 637812eba1b4SJeroen Hofstee Note: on ARM, only R_ARM_RELATIVE relocations are supported. 6379c609719bSwdenk 63800df01fd3SThomas ChouOn Nios II, the ABI is documented here: 63810df01fd3SThomas Chou http://www.altera.com/literature/hb/nios2/n2cpu_nii51016.pdf 63820df01fd3SThomas Chou 63830df01fd3SThomas Chou ==> U-Boot will use gp to hold a pointer to the global data 63840df01fd3SThomas Chou 63850df01fd3SThomas Chou Note: on Nios II, we give "-G0" option to gcc and don't use gp 63860df01fd3SThomas Chou to access small data sections, so gp is free. 63870df01fd3SThomas Chou 6388afc1ce82SMacpaul LinOn NDS32, the following registers are used: 6389afc1ce82SMacpaul Lin 6390afc1ce82SMacpaul Lin R0-R1: argument/return 6391afc1ce82SMacpaul Lin R2-R5: argument 6392afc1ce82SMacpaul Lin R15: temporary register for assembler 6393afc1ce82SMacpaul Lin R16: trampoline register 6394afc1ce82SMacpaul Lin R28: frame pointer (FP) 6395afc1ce82SMacpaul Lin R29: global pointer (GP) 6396afc1ce82SMacpaul Lin R30: link register (LP) 6397afc1ce82SMacpaul Lin R31: stack pointer (SP) 6398afc1ce82SMacpaul Lin PC: program counter (PC) 6399afc1ce82SMacpaul Lin 6400afc1ce82SMacpaul Lin ==> U-Boot will use R10 to hold a pointer to the global data 6401afc1ce82SMacpaul Lin 6402d87080b7SWolfgang DenkNOTE: DECLARE_GLOBAL_DATA_PTR must be used with file-global scope, 6403d87080b7SWolfgang Denkor current versions of GCC may "optimize" the code too much. 6404c609719bSwdenk 6405c609719bSwdenkMemory Management: 6406c609719bSwdenk------------------ 6407c609719bSwdenk 6408c609719bSwdenkU-Boot runs in system state and uses physical addresses, i.e. the 6409c609719bSwdenkMMU is not used either for address mapping nor for memory protection. 6410c609719bSwdenk 6411c609719bSwdenkThe available memory is mapped to fixed addresses using the memory 6412c609719bSwdenkcontroller. In this process, a contiguous block is formed for each 6413c609719bSwdenkmemory type (Flash, SDRAM, SRAM), even when it consists of several 6414c609719bSwdenkphysical memory banks. 6415c609719bSwdenk 6416c609719bSwdenkU-Boot is installed in the first 128 kB of the first Flash bank (on 6417c609719bSwdenkTQM8xxL modules this is the range 0x40000000 ... 0x4001FFFF). After 6418c609719bSwdenkbooting and sizing and initializing DRAM, the code relocates itself 6419c609719bSwdenkto the upper end of DRAM. Immediately below the U-Boot code some 64206d0f6bcfSJean-Christophe PLAGNIOL-VILLARDmemory is reserved for use by malloc() [see CONFIG_SYS_MALLOC_LEN 6421c609719bSwdenkconfiguration setting]. Below that, a structure with global Board 6422c609719bSwdenkInfo data is placed, followed by the stack (growing downward). 6423c609719bSwdenk 6424c609719bSwdenkAdditionally, some exception handler code is copied to the low 8 kB 6425c609719bSwdenkof DRAM (0x00000000 ... 0x00001FFF). 6426c609719bSwdenk 6427c609719bSwdenkSo a typical memory configuration with 16 MB of DRAM could look like 6428c609719bSwdenkthis: 6429c609719bSwdenk 6430c609719bSwdenk 0x0000 0000 Exception Vector code 6431c609719bSwdenk : 6432c609719bSwdenk 0x0000 1FFF 6433c609719bSwdenk 0x0000 2000 Free for Application Use 6434c609719bSwdenk : 6435c609719bSwdenk : 6436c609719bSwdenk 6437c609719bSwdenk : 6438c609719bSwdenk : 6439c609719bSwdenk 0x00FB FF20 Monitor Stack (Growing downward) 6440c609719bSwdenk 0x00FB FFAC Board Info Data and permanent copy of global data 6441c609719bSwdenk 0x00FC 0000 Malloc Arena 6442c609719bSwdenk : 6443c609719bSwdenk 0x00FD FFFF 6444c609719bSwdenk 0x00FE 0000 RAM Copy of Monitor Code 6445c609719bSwdenk ... eventually: LCD or video framebuffer 6446c609719bSwdenk ... eventually: pRAM (Protected RAM - unchanged by reset) 6447c609719bSwdenk 0x00FF FFFF [End of RAM] 6448c609719bSwdenk 6449c609719bSwdenk 6450c609719bSwdenkSystem Initialization: 6451c609719bSwdenk---------------------- 6452c609719bSwdenk 6453c609719bSwdenkIn the reset configuration, U-Boot starts at the reset entry point 645411ccc33fSMarcel Ziswiler(on most PowerPC systems at address 0x00000100). Because of the reset 6455c609719bSwdenkconfiguration for CS0# this is a mirror of the onboard Flash memory. 64567152b1d0SwdenkTo be able to re-map memory U-Boot then jumps to its link address. 6457c609719bSwdenkTo be able to implement the initialization code in C, a (small!) 6458c609719bSwdenkinitial stack is set up in the internal Dual Ported RAM (in case CPUs 6459c609719bSwdenkwhich provide such a feature like MPC8xx or MPC8260), or in a locked 6460c609719bSwdenkpart of the data cache. After that, U-Boot initializes the CPU core, 6461c609719bSwdenkthe caches and the SIU. 6462c609719bSwdenk 6463c609719bSwdenkNext, all (potentially) available memory banks are mapped using a 6464c609719bSwdenkpreliminary mapping. For example, we put them on 512 MB boundaries 6465c609719bSwdenk(multiples of 0x20000000: SDRAM on 0x00000000 and 0x20000000, Flash 6466c609719bSwdenkon 0x40000000 and 0x60000000, SRAM on 0x80000000). Then UPM A is 6467c609719bSwdenkprogrammed for SDRAM access. Using the temporary configuration, a 6468c609719bSwdenksimple memory test is run that determines the size of the SDRAM 6469c609719bSwdenkbanks. 6470c609719bSwdenk 6471c609719bSwdenkWhen there is more than one SDRAM bank, and the banks are of 64727152b1d0Swdenkdifferent size, the largest is mapped first. For equal size, the first 6473c609719bSwdenkbank (CS2#) is mapped first. The first mapping is always for address 6474c609719bSwdenk0x00000000, with any additional banks following immediately to create 6475c609719bSwdenkcontiguous memory starting from 0. 6476c609719bSwdenk 6477c609719bSwdenkThen, the monitor installs itself at the upper end of the SDRAM area 6478c609719bSwdenkand allocates memory for use by malloc() and for the global Board 6479c609719bSwdenkInfo data; also, the exception vector code is copied to the low RAM 6480c609719bSwdenkpages, and the final stack is set up. 6481c609719bSwdenk 6482c609719bSwdenkOnly after this relocation will you have a "normal" C environment; 6483c609719bSwdenkuntil that you are restricted in several ways, mostly because you are 6484c609719bSwdenkrunning from ROM, and because the code will have to be relocated to a 6485c609719bSwdenknew address in RAM. 6486c609719bSwdenk 6487c609719bSwdenk 6488c609719bSwdenkU-Boot Porting Guide: 6489c609719bSwdenk---------------------- 6490c609719bSwdenk 6491c609719bSwdenk[Based on messages by Jerry Van Baren in the U-Boot-Users mailing 64926aff3115Swdenklist, October 2002] 6493c609719bSwdenk 6494c609719bSwdenk 6495c609719bSwdenkint main(int argc, char *argv[]) 6496c609719bSwdenk{ 6497c609719bSwdenk sighandler_t no_more_time; 6498c609719bSwdenk 6499c609719bSwdenk signal(SIGALRM, no_more_time); 6500c609719bSwdenk alarm(PROJECT_DEADLINE - toSec (3 * WEEK)); 6501c609719bSwdenk 6502c609719bSwdenk if (available_money > available_manpower) { 65036c3fef28SJerry Van Baren Pay consultant to port U-Boot; 6504c609719bSwdenk return 0; 6505c609719bSwdenk } 6506c609719bSwdenk 6507c609719bSwdenk Download latest U-Boot source; 6508c609719bSwdenk 65090668236bSWolfgang Denk Subscribe to u-boot mailing list; 65106aff3115Swdenk 65116c3fef28SJerry Van Baren if (clueless) 6512c609719bSwdenk email("Hi, I am new to U-Boot, how do I get started?"); 6513c609719bSwdenk 6514c609719bSwdenk while (learning) { 6515c609719bSwdenk Read the README file in the top level directory; 65167cb22f97Swdenk Read http://www.denx.de/twiki/bin/view/DULG/Manual; 65176c3fef28SJerry Van Baren Read applicable doc/*.README; 6518c609719bSwdenk Read the source, Luke; 65196c3fef28SJerry Van Baren /* find . -name "*.[chS]" | xargs grep -i <keyword> */ 6520c609719bSwdenk } 6521c609719bSwdenk 65226c3fef28SJerry Van Baren if (available_money > toLocalCurrency ($2500)) 65236c3fef28SJerry Van Baren Buy a BDI3000; 65246c3fef28SJerry Van Baren else 6525c609719bSwdenk Add a lot of aggravation and time; 6526c609719bSwdenk 65276c3fef28SJerry Van Baren if (a similar board exists) { /* hopefully... */ 65286c3fef28SJerry Van Baren cp -a board/<similar> board/<myboard> 65296c3fef28SJerry Van Baren cp include/configs/<similar>.h include/configs/<myboard>.h 65306c3fef28SJerry Van Baren } else { 6531c609719bSwdenk Create your own board support subdirectory; 65326c3fef28SJerry Van Baren Create your own board include/configs/<myboard>.h file; 65336c3fef28SJerry Van Baren } 65346c3fef28SJerry Van Baren Edit new board/<myboard> files 65356c3fef28SJerry Van Baren Edit new include/configs/<myboard>.h 6536c609719bSwdenk 65376c3fef28SJerry Van Baren while (!accepted) { 6538c609719bSwdenk while (!running) { 6539c609719bSwdenk do { 6540c609719bSwdenk Add / modify source code; 6541c609719bSwdenk } until (compiles); 6542c609719bSwdenk Debug; 6543c609719bSwdenk if (clueless) 6544c609719bSwdenk email("Hi, I am having problems..."); 6545c609719bSwdenk } 65466c3fef28SJerry Van Baren Send patch file to the U-Boot email list; 65476c3fef28SJerry Van Baren if (reasonable critiques) 65486c3fef28SJerry Van Baren Incorporate improvements from email list code review; 65496c3fef28SJerry Van Baren else 65506c3fef28SJerry Van Baren Defend code as written; 65516c3fef28SJerry Van Baren } 6552c609719bSwdenk 6553c609719bSwdenk return 0; 6554c609719bSwdenk} 6555c609719bSwdenk 6556c609719bSwdenkvoid no_more_time (int sig) 6557c609719bSwdenk{ 6558c609719bSwdenk hire_a_guru(); 6559c609719bSwdenk} 6560c609719bSwdenk 6561c609719bSwdenk 6562c609719bSwdenkCoding Standards: 6563c609719bSwdenk----------------- 6564c609719bSwdenk 6565c609719bSwdenkAll contributions to U-Boot should conform to the Linux kernel 65662c051651SDetlev Zundelcoding style; see the file "Documentation/CodingStyle" and the script 65677ca9296eSWolfgang Denk"scripts/Lindent" in your Linux kernel source directory. 6568c609719bSwdenk 65692c051651SDetlev ZundelSource files originating from a different project (for example the 65702c051651SDetlev ZundelMTD subsystem) are generally exempt from these guidelines and are not 65712c051651SDetlev Zundelreformated to ease subsequent migration to newer versions of those 65722c051651SDetlev Zundelsources. 65732c051651SDetlev Zundel 65742c051651SDetlev ZundelPlease note that U-Boot is implemented in C (and to some small parts in 65752c051651SDetlev ZundelAssembler); no C++ is used, so please do not use C++ style comments (//) 65762c051651SDetlev Zundelin your code. 6577c609719bSwdenk 6578c178d3daSwdenkPlease also stick to the following formatting rules: 6579180d3f74Swdenk- remove any trailing white space 65807ca9296eSWolfgang Denk- use TAB characters for indentation and vertical alignment, not spaces 6581180d3f74Swdenk- make sure NOT to use DOS '\r\n' line feeds 65827ca9296eSWolfgang Denk- do not add more than 2 consecutive empty lines to source files 6583180d3f74Swdenk- do not add trailing empty lines to source files 6584180d3f74Swdenk 6585c609719bSwdenkSubmissions which do not conform to the standards may be returned 6586c609719bSwdenkwith a request to reformat the changes. 6587c609719bSwdenk 6588c609719bSwdenk 6589c609719bSwdenkSubmitting Patches: 6590c609719bSwdenk------------------- 6591c609719bSwdenk 6592c609719bSwdenkSince the number of patches for U-Boot is growing, we need to 6593c609719bSwdenkestablish some rules. Submissions which do not conform to these rules 6594c609719bSwdenkmay be rejected, even when they contain important and valuable stuff. 6595c609719bSwdenk 65960d28f34bSMagnus LiljaPlease see http://www.denx.de/wiki/U-Boot/Patches for details. 6597218ca724SWolfgang Denk 65980668236bSWolfgang DenkPatches shall be sent to the u-boot mailing list <u-boot@lists.denx.de>; 65990668236bSWolfgang Denksee http://lists.denx.de/mailman/listinfo/u-boot 66000668236bSWolfgang Denk 6601c609719bSwdenkWhen you send a patch, please include the following information with 6602c609719bSwdenkit: 6603c609719bSwdenk 6604c609719bSwdenk* For bug fixes: a description of the bug and how your patch fixes 6605c609719bSwdenk this bug. Please try to include a way of demonstrating that the 6606c609719bSwdenk patch actually fixes something. 6607c609719bSwdenk 6608c609719bSwdenk* For new features: a description of the feature and your 6609c609719bSwdenk implementation. 6610c609719bSwdenk 6611c609719bSwdenk* A CHANGELOG entry as plaintext (separate from the patch) 6612c609719bSwdenk 6613c609719bSwdenk* For major contributions, your entry to the CREDITS file 6614c609719bSwdenk 661527af930eSAlbert ARIBAUD* When you add support for a new board, don't forget to add a 661627af930eSAlbert ARIBAUD maintainer e-mail address to the boards.cfg file, too. 6617c609719bSwdenk 6618c609719bSwdenk* If your patch adds new configuration options, don't forget to 6619c609719bSwdenk document these in the README file. 6620c609719bSwdenk 6621218ca724SWolfgang Denk* The patch itself. If you are using git (which is *strongly* 6622218ca724SWolfgang Denk recommended) you can easily generate the patch using the 66237ca9296eSWolfgang Denk "git format-patch". If you then use "git send-email" to send it to 6624218ca724SWolfgang Denk the U-Boot mailing list, you will avoid most of the common problems 6625218ca724SWolfgang Denk with some other mail clients. 6626c609719bSwdenk 6627218ca724SWolfgang Denk If you cannot use git, use "diff -purN OLD NEW". If your version of 6628218ca724SWolfgang Denk diff does not support these options, then get the latest version of 6629218ca724SWolfgang Denk GNU diff. 66306dff5529Swdenk 6631218ca724SWolfgang Denk The current directory when running this command shall be the parent 6632218ca724SWolfgang Denk directory of the U-Boot source tree (i. e. please make sure that 6633218ca724SWolfgang Denk your patch includes sufficient directory information for the 6634218ca724SWolfgang Denk affected files). 6635218ca724SWolfgang Denk 6636218ca724SWolfgang Denk We prefer patches as plain text. MIME attachments are discouraged, 6637218ca724SWolfgang Denk and compressed attachments must not be used. 6638c609719bSwdenk 663952f52c14Swdenk* If one logical set of modifications affects or creates several 664052f52c14Swdenk files, all these changes shall be submitted in a SINGLE patch file. 664152f52c14Swdenk 664252f52c14Swdenk* Changesets that contain different, unrelated modifications shall be 664352f52c14Swdenk submitted as SEPARATE patches, one patch per changeset. 664452f52c14Swdenk 664552f52c14Swdenk 6646c609719bSwdenkNotes: 6647c609719bSwdenk 6648c609719bSwdenk* Before sending the patch, run the MAKEALL script on your patched 6649c609719bSwdenk source tree and make sure that no errors or warnings are reported 6650c609719bSwdenk for any of the boards. 6651c609719bSwdenk 6652c609719bSwdenk* Keep your modifications to the necessary minimum: A patch 6653c609719bSwdenk containing several unrelated changes or arbitrary reformats will be 6654c609719bSwdenk returned with a request to re-formatting / split it. 6655c609719bSwdenk 6656c609719bSwdenk* If you modify existing code, make sure that your new code does not 6657c609719bSwdenk add to the memory footprint of the code ;-) Small is beautiful! 6658c609719bSwdenk When adding new features, these should compile conditionally only 6659c609719bSwdenk (using #ifdef), and the resulting code with the new feature 6660c609719bSwdenk disabled must not need more memory than the old code without your 6661c609719bSwdenk modification. 666290dc6704Swdenk 66630668236bSWolfgang Denk* Remember that there is a size limit of 100 kB per message on the 66640668236bSWolfgang Denk u-boot mailing list. Bigger patches will be moderated. If they are 66650668236bSWolfgang Denk reasonable and not too big, they will be acknowledged. But patches 66660668236bSWolfgang Denk bigger than the size limit should be avoided. 6667