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 1358d321b81SPeter Tyser /arm Files generic to ARM architecture 1368d321b81SPeter Tyser /cpu CPU specific files 1378d321b81SPeter Tyser /arm720t Files specific to ARM 720 CPUs 1388d321b81SPeter Tyser /arm920t Files specific to ARM 920 CPUs 1396eb0921aSAndreas Bießmann /at91 Files specific to Atmel AT91RM9200 CPU 1408d321b81SPeter Tyser /imx Files specific to Freescale MC9328 i.MX CPUs 1418d321b81SPeter Tyser /s3c24x0 Files specific to Samsung S3C24X0 CPUs 1428d321b81SPeter Tyser /arm926ejs Files specific to ARM 926 CPUs 1438d321b81SPeter Tyser /arm1136 Files specific to ARM 1136 CPUs 1448d321b81SPeter Tyser /ixp Files specific to Intel XScale IXP CPUs 1458d321b81SPeter Tyser /pxa Files specific to Intel XScale PXA CPUs 1468d321b81SPeter Tyser /sa1100 Files specific to Intel StrongARM SA1100 CPUs 1478d321b81SPeter Tyser /lib Architecture specific library files 1488d321b81SPeter Tyser /avr32 Files generic to AVR32 architecture 1498d321b81SPeter Tyser /cpu CPU specific files 1508d321b81SPeter Tyser /lib Architecture specific library files 1518d321b81SPeter Tyser /blackfin Files generic to Analog Devices Blackfin architecture 1528d321b81SPeter Tyser /cpu CPU specific files 1538d321b81SPeter Tyser /lib Architecture specific library files 1548d321b81SPeter Tyser /m68k Files generic to m68k architecture 1558d321b81SPeter Tyser /cpu CPU specific files 1568d321b81SPeter Tyser /mcf52x2 Files specific to Freescale ColdFire MCF52x2 CPUs 1578d321b81SPeter Tyser /mcf5227x Files specific to Freescale ColdFire MCF5227x CPUs 1588d321b81SPeter Tyser /mcf532x Files specific to Freescale ColdFire MCF5329 CPUs 1598d321b81SPeter Tyser /mcf5445x Files specific to Freescale ColdFire MCF5445x CPUs 1608d321b81SPeter Tyser /mcf547x_8x Files specific to Freescale ColdFire MCF547x_8x CPUs 1618d321b81SPeter Tyser /lib Architecture specific library files 1628d321b81SPeter Tyser /microblaze Files generic to microblaze architecture 1638d321b81SPeter Tyser /cpu CPU specific files 1648d321b81SPeter Tyser /lib Architecture specific library files 1658d321b81SPeter Tyser /mips Files generic to MIPS architecture 1668d321b81SPeter Tyser /cpu CPU specific files 16792bbd64eSDaniel Schwierzeck /mips32 Files specific to MIPS32 CPUs 16880421fccSXiangfu Liu /xburst Files specific to Ingenic XBurst CPUs 1698d321b81SPeter Tyser /lib Architecture specific library files 170afc1ce82SMacpaul Lin /nds32 Files generic to NDS32 architecture 171afc1ce82SMacpaul Lin /cpu CPU specific files 172afc1ce82SMacpaul Lin /n1213 Files specific to Andes Technology N1213 CPUs 173afc1ce82SMacpaul Lin /lib Architecture specific library files 1748d321b81SPeter Tyser /nios2 Files generic to Altera NIOS2 architecture 1758d321b81SPeter Tyser /cpu CPU specific files 1768d321b81SPeter Tyser /lib Architecture specific library files 17733c7731bSRobert P. J. Day /openrisc Files generic to OpenRISC architecture 17833c7731bSRobert P. J. Day /cpu CPU specific files 17933c7731bSRobert P. J. Day /lib Architecture specific library files 180a47a12beSStefan Roese /powerpc Files generic to PowerPC architecture 1818d321b81SPeter Tyser /cpu CPU specific files 1828d321b81SPeter Tyser /74xx_7xx Files specific to Freescale MPC74xx and 7xx CPUs 1838d321b81SPeter Tyser /mpc5xx Files specific to Freescale MPC5xx CPUs 1848d321b81SPeter Tyser /mpc5xxx Files specific to Freescale MPC5xxx CPUs 1858d321b81SPeter Tyser /mpc8xx Files specific to Freescale MPC8xx CPUs 1868d321b81SPeter Tyser /mpc824x Files specific to Freescale MPC824x CPUs 1878d321b81SPeter Tyser /mpc8260 Files specific to Freescale MPC8260 CPUs 1888d321b81SPeter Tyser /mpc85xx Files specific to Freescale MPC85xx CPUs 1898d321b81SPeter Tyser /ppc4xx Files specific to AMCC PowerPC 4xx CPUs 1908d321b81SPeter Tyser /lib Architecture specific library files 1918d321b81SPeter Tyser /sh Files generic to SH architecture 1928d321b81SPeter Tyser /cpu CPU specific files 1938d321b81SPeter Tyser /sh2 Files specific to sh2 CPUs 1948d321b81SPeter Tyser /sh3 Files specific to sh3 CPUs 1958d321b81SPeter Tyser /sh4 Files specific to sh4 CPUs 1968d321b81SPeter Tyser /lib Architecture specific library files 1978d321b81SPeter Tyser /sparc Files generic to SPARC architecture 1988d321b81SPeter Tyser /cpu CPU specific files 1998d321b81SPeter Tyser /leon2 Files specific to Gaisler LEON2 SPARC CPU 2008d321b81SPeter Tyser /leon3 Files specific to Gaisler LEON3 SPARC CPU 2018d321b81SPeter Tyser /lib Architecture specific library files 20233c7731bSRobert P. J. Day /x86 Files generic to x86 architecture 20333c7731bSRobert P. J. Day /cpu CPU specific files 20433c7731bSRobert P. J. Day /lib Architecture specific library files 2058d321b81SPeter Tyser/api Machine/arch independent API for external apps 2068d321b81SPeter Tyser/board Board dependent files 2078d321b81SPeter Tyser/common Misc architecture independent functions 2088d321b81SPeter Tyser/disk Code for disk drive partition handling 2098d321b81SPeter Tyser/doc Documentation (don't expect too much) 2108d321b81SPeter Tyser/drivers Commonly used device drivers 21133c7731bSRobert P. J. Day/dts Contains Makefile for building internal U-Boot fdt. 2128d321b81SPeter Tyser/examples Example code for standalone applications, etc. 2138d321b81SPeter Tyser/fs Filesystem code (cramfs, ext2, jffs2, etc.) 2148d321b81SPeter Tyser/include Header Files 2158d321b81SPeter Tyser/lib Files generic to all architectures 2168d321b81SPeter Tyser /libfdt Library files to support flattened device trees 2178d321b81SPeter Tyser /lzma Library files to support LZMA decompression 2188d321b81SPeter Tyser /lzo Library files to support LZO decompression 2198d321b81SPeter Tyser/net Networking code 2208d321b81SPeter Tyser/post Power On Self Test 22133c7731bSRobert P. J. Day/spl Secondary Program Loader framework 2228d321b81SPeter Tyser/tools Tools to build S-Record or U-Boot images, etc. 223c609719bSwdenk 224c609719bSwdenkSoftware Configuration: 225c609719bSwdenk======================= 226c609719bSwdenk 227c609719bSwdenkConfiguration is usually done using C preprocessor defines; the 228c609719bSwdenkrationale behind that is to avoid dead code whenever possible. 229c609719bSwdenk 230c609719bSwdenkThere are two classes of configuration variables: 231c609719bSwdenk 232c609719bSwdenk* Configuration _OPTIONS_: 233c609719bSwdenk These are selectable by the user and have names beginning with 234c609719bSwdenk "CONFIG_". 235c609719bSwdenk 236c609719bSwdenk* Configuration _SETTINGS_: 237c609719bSwdenk These depend on the hardware etc. and should not be meddled with if 238c609719bSwdenk you don't know what you're doing; they have names beginning with 2396d0f6bcfSJean-Christophe PLAGNIOL-VILLARD "CONFIG_SYS_". 240c609719bSwdenk 241c609719bSwdenkLater we will add a configuration tool - probably similar to or even 242c609719bSwdenkidentical to what's used for the Linux kernel. Right now, we have to 243c609719bSwdenkdo the configuration by hand, which means creating some symbolic 244c609719bSwdenklinks and editing some configuration files. We use the TQM8xxL boards 245c609719bSwdenkas an example here. 246c609719bSwdenk 247c609719bSwdenk 248c609719bSwdenkSelection of Processor Architecture and Board Type: 249c609719bSwdenk--------------------------------------------------- 250c609719bSwdenk 251c609719bSwdenkFor all supported boards there are ready-to-use default 252c609719bSwdenkconfigurations available; just type "make <board_name>_config". 253c609719bSwdenk 254c609719bSwdenkExample: For a TQM823L module type: 255c609719bSwdenk 256c609719bSwdenk cd u-boot 257c609719bSwdenk make TQM823L_config 258c609719bSwdenk 25911ccc33fSMarcel ZiswilerFor the Cogent platform, you need to specify the CPU type as well; 260c609719bSwdenke.g. "make cogent_mpc8xx_config". And also configure the cogent 261c609719bSwdenkdirectory according to the instructions in cogent/README. 262c609719bSwdenk 263c609719bSwdenk 264c609719bSwdenkConfiguration Options: 265c609719bSwdenk---------------------- 266c609719bSwdenk 267c609719bSwdenkConfiguration depends on the combination of board and CPU type; all 268c609719bSwdenksuch information is kept in a configuration file 269c609719bSwdenk"include/configs/<board_name>.h". 270c609719bSwdenk 271c609719bSwdenkExample: For a TQM823L module, all configuration settings are in 272c609719bSwdenk"include/configs/TQM823L.h". 273c609719bSwdenk 274c609719bSwdenk 2757f6c2cbcSwdenkMany of the options are named exactly as the corresponding Linux 2767f6c2cbcSwdenkkernel configuration options. The intention is to make it easier to 2777f6c2cbcSwdenkbuild a config tool - later. 2787f6c2cbcSwdenk 2797f6c2cbcSwdenk 280c609719bSwdenkThe following options need to be configured: 281c609719bSwdenk 2822628114eSKim Phillips- CPU Type: Define exactly one, e.g. CONFIG_MPC85XX. 283c609719bSwdenk 2842628114eSKim Phillips- Board Type: Define exactly one, e.g. CONFIG_MPC8540ADS. 2856ccec449SWolfgang Denk 2866ccec449SWolfgang Denk- CPU Daughterboard Type: (if CONFIG_ATSTK1000 is defined) 28709ea0de0SHaavard Skinnemoen Define exactly one, e.g. CONFIG_ATSTK1002 288c609719bSwdenk 289c609719bSwdenk- CPU Module Type: (if CONFIG_COGENT is defined) 290c609719bSwdenk Define exactly one of 291c609719bSwdenk CONFIG_CMA286_60_OLD 292c609719bSwdenk--- FIXME --- not tested yet: 293c609719bSwdenk CONFIG_CMA286_60, CONFIG_CMA286_21, CONFIG_CMA286_60P, 294c609719bSwdenk CONFIG_CMA287_23, CONFIG_CMA287_50 295c609719bSwdenk 296c609719bSwdenk- Motherboard Type: (if CONFIG_COGENT is defined) 297c609719bSwdenk Define exactly one of 298c609719bSwdenk CONFIG_CMA101, CONFIG_CMA102 299c609719bSwdenk 300c609719bSwdenk- Motherboard I/O Modules: (if CONFIG_COGENT is defined) 301c609719bSwdenk Define one or more of 302c609719bSwdenk CONFIG_CMA302 303c609719bSwdenk 304c609719bSwdenk- Motherboard Options: (if CONFIG_CMA101 or CONFIG_CMA102 are defined) 305c609719bSwdenk Define one or more of 306c609719bSwdenk CONFIG_LCD_HEARTBEAT - update a character position on 30711ccc33fSMarcel Ziswiler the LCD display every second with 308c609719bSwdenk a "rotator" |\-/|\-/ 309c609719bSwdenk 3102535d602Swdenk- Board flavour: (if CONFIG_MPC8260ADS is defined) 3112535d602Swdenk CONFIG_ADSTYPE 3122535d602Swdenk Possible values are: 3136d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8260ADS - original MPC8260ADS 3146d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8266ADS - MPC8266ADS 3156d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PQ2FADS - PQ2FADS-ZU or PQ2FADS-VR 3166d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8272ADS - MPC8272ADS 3172535d602Swdenk 318cf946c6dSLei Wen- Marvell Family Member 319cf946c6dSLei Wen CONFIG_SYS_MVFS - define it if you want to enable 320cf946c6dSLei Wen multiple fs option at one time 321cf946c6dSLei Wen for marvell soc family 322cf946c6dSLei Wen 323c609719bSwdenk- MPC824X Family Member (if CONFIG_MPC824X is defined) 324c609719bSwdenk Define exactly one of 325c609719bSwdenk CONFIG_MPC8240, CONFIG_MPC8245 326c609719bSwdenk 32711ccc33fSMarcel Ziswiler- 8xx CPU Options: (if using an MPC8xx CPU) 32866ca92a5Swdenk CONFIG_8xx_GCLK_FREQ - deprecated: CPU clock if 32966ca92a5Swdenk get_gclk_freq() cannot work 3305da627a4Swdenk e.g. if there is no 32KHz 3315da627a4Swdenk reference PIT/RTC clock 33266ca92a5Swdenk CONFIG_8xx_OSCLK - PLL input clock (either EXTCLK 33366ca92a5Swdenk or XTAL/EXTAL) 334c609719bSwdenk 33566ca92a5Swdenk- 859/866/885 CPU options: (if using a MPC859 or MPC866 or MPC885 CPU): 3366d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8xx_CPUCLK_MIN 3376d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8xx_CPUCLK_MAX 33866ca92a5Swdenk CONFIG_8xx_CPUCLK_DEFAULT 33975d1ea7fSwdenk See doc/README.MPC866 34075d1ea7fSwdenk 3416d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MEASURE_CPUCLK 34275d1ea7fSwdenk 34375d1ea7fSwdenk Define this to measure the actual CPU clock instead 34475d1ea7fSwdenk of relying on the correctness of the configured 34575d1ea7fSwdenk values. Mostly useful for board bringup to make sure 34675d1ea7fSwdenk the PLL is locked at the intended frequency. Note 34775d1ea7fSwdenk that this requires a (stable) reference clock (32 kHz 3486d0f6bcfSJean-Christophe PLAGNIOL-VILLARD RTC clock or CONFIG_SYS_8XX_XIN) 34975d1ea7fSwdenk 350506f3918SHeiko Schocher CONFIG_SYS_DELAYED_ICACHE 351506f3918SHeiko Schocher 352506f3918SHeiko Schocher Define this option if you want to enable the 353506f3918SHeiko Schocher ICache only when Code runs from RAM. 354506f3918SHeiko Schocher 35566412c63SKumar Gala- 85xx CPU Options: 356ffd06e02SYork Sun CONFIG_SYS_PPC64 357ffd06e02SYork Sun 358ffd06e02SYork Sun Specifies that the core is a 64-bit PowerPC implementation (implements 359ffd06e02SYork Sun the "64" category of the Power ISA). This is necessary for ePAPR 360ffd06e02SYork Sun compliance, among other possible reasons. 361ffd06e02SYork Sun 36266412c63SKumar Gala CONFIG_SYS_FSL_TBCLK_DIV 36366412c63SKumar Gala 36466412c63SKumar Gala Defines the core time base clock divider ratio compared to the 36566412c63SKumar Gala system clock. On most PQ3 devices this is 8, on newer QorIQ 36666412c63SKumar Gala devices it can be 16 or 32. The ratio varies from SoC to Soc. 36766412c63SKumar Gala 3688f29084aSKumar Gala CONFIG_SYS_FSL_PCIE_COMPAT 3698f29084aSKumar Gala 3708f29084aSKumar Gala Defines the string to utilize when trying to match PCIe device 3718f29084aSKumar Gala tree nodes for the given platform. 3728f29084aSKumar Gala 373afa6b551SPrabhakar Kushwaha CONFIG_SYS_PPC_E500_DEBUG_TLB 374afa6b551SPrabhakar Kushwaha 375afa6b551SPrabhakar Kushwaha Enables a temporary TLB entry to be used during boot to work 376afa6b551SPrabhakar Kushwaha around limitations in e500v1 and e500v2 external debugger 377afa6b551SPrabhakar Kushwaha support. This reduces the portions of the boot code where 378afa6b551SPrabhakar Kushwaha breakpoints and single stepping do not work. The value of this 379afa6b551SPrabhakar Kushwaha symbol should be set to the TLB1 entry to be used for this 380afa6b551SPrabhakar Kushwaha purpose. 381afa6b551SPrabhakar Kushwaha 38233eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510 38333eee330SScott Wood 38433eee330SScott Wood Enables a workaround for erratum A004510. If set, 38533eee330SScott Wood then CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV and 38633eee330SScott Wood CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY must be set. 38733eee330SScott Wood 38833eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV 38933eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2 (optional) 39033eee330SScott Wood 39133eee330SScott Wood Defines one or two SoC revisions (low 8 bits of SVR) 39233eee330SScott Wood for which the A004510 workaround should be applied. 39333eee330SScott Wood 39433eee330SScott Wood The rest of SVR is either not relevant to the decision 39533eee330SScott Wood of whether the erratum is present (e.g. p2040 versus 39633eee330SScott Wood p2041) or is implied by the build target, which controls 39733eee330SScott Wood whether CONFIG_SYS_FSL_ERRATUM_A004510 is set. 39833eee330SScott Wood 39933eee330SScott Wood See Freescale App Note 4493 for more information about 40033eee330SScott Wood this erratum. 40133eee330SScott Wood 40274fa22edSPrabhakar Kushwaha CONFIG_A003399_NOR_WORKAROUND 40374fa22edSPrabhakar Kushwaha Enables a workaround for IFC erratum A003399. It is only 40474fa22edSPrabhakar Kushwaha requred during NOR boot. 40574fa22edSPrabhakar Kushwaha 40633eee330SScott Wood CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY 40733eee330SScott Wood 40833eee330SScott Wood This is the value to write into CCSR offset 0x18600 40933eee330SScott Wood according to the A004510 workaround. 41033eee330SScott Wood 41164501c66SPriyanka Jain CONFIG_SYS_FSL_DSP_DDR_ADDR 41264501c66SPriyanka Jain This value denotes start offset of DDR memory which is 41364501c66SPriyanka Jain connected exclusively to the DSP cores. 41464501c66SPriyanka Jain 415765b0bdbSPriyanka Jain CONFIG_SYS_FSL_DSP_M2_RAM_ADDR 416765b0bdbSPriyanka Jain This value denotes start offset of M2 memory 417765b0bdbSPriyanka Jain which is directly connected to the DSP core. 418765b0bdbSPriyanka Jain 41964501c66SPriyanka Jain CONFIG_SYS_FSL_DSP_M3_RAM_ADDR 42064501c66SPriyanka Jain This value denotes start offset of M3 memory which is directly 42164501c66SPriyanka Jain connected to the DSP core. 42264501c66SPriyanka Jain 423765b0bdbSPriyanka Jain CONFIG_SYS_FSL_DSP_CCSRBAR_DEFAULT 424765b0bdbSPriyanka Jain This value denotes start offset of DSP CCSR space. 425765b0bdbSPriyanka Jain 426b135991aSPriyanka Jain CONFIG_SYS_FSL_SINGLE_SOURCE_CLK 427b135991aSPriyanka Jain Single Source Clock is clocking mode present in some of FSL SoC's. 428b135991aSPriyanka Jain In this mode, a single differential clock is used to supply 429b135991aSPriyanka Jain clocks to the sysclock, ddrclock and usbclock. 430b135991aSPriyanka Jain 4316cb461b4SDaniel Schwierzeck- Generic CPU options: 4326cb461b4SDaniel Schwierzeck CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN 4336cb461b4SDaniel Schwierzeck 4346cb461b4SDaniel Schwierzeck Defines the endianess of the CPU. Implementation of those 4356cb461b4SDaniel Schwierzeck values is arch specific. 4366cb461b4SDaniel Schwierzeck 4375614e71bSYork Sun CONFIG_SYS_FSL_DDR 4385614e71bSYork Sun Freescale DDR driver in use. This type of DDR controller is 4395614e71bSYork Sun found in mpc83xx, mpc85xx, mpc86xx as well as some ARM core 4405614e71bSYork Sun SoCs. 4415614e71bSYork Sun 4425614e71bSYork Sun CONFIG_SYS_FSL_DDR_ADDR 4435614e71bSYork Sun Freescale DDR memory-mapped register base. 4445614e71bSYork Sun 4455614e71bSYork Sun CONFIG_SYS_FSL_DDR_EMU 4465614e71bSYork Sun Specify emulator support for DDR. Some DDR features such as 4475614e71bSYork Sun deskew training are not available. 4485614e71bSYork Sun 4495614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN1 4505614e71bSYork Sun Freescale DDR1 controller. 4515614e71bSYork Sun 4525614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN2 4535614e71bSYork Sun Freescale DDR2 controller. 4545614e71bSYork Sun 4555614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN3 4565614e71bSYork Sun Freescale DDR3 controller. 4575614e71bSYork Sun 4589ac4ffbdSYork Sun CONFIG_SYS_FSL_DDRC_ARM_GEN3 4599ac4ffbdSYork Sun Freescale DDR3 controller for ARM-based SoCs. 4609ac4ffbdSYork Sun 4615614e71bSYork Sun CONFIG_SYS_FSL_DDR1 4625614e71bSYork Sun Board config to use DDR1. It can be enabled for SoCs with 4635614e71bSYork Sun Freescale DDR1 or DDR2 controllers, depending on the board 4645614e71bSYork Sun implemetation. 4655614e71bSYork Sun 4665614e71bSYork Sun CONFIG_SYS_FSL_DDR2 4675614e71bSYork Sun Board config to use DDR2. It can be eanbeld for SoCs with 4685614e71bSYork Sun Freescale DDR2 or DDR3 controllers, depending on the board 4695614e71bSYork Sun implementation. 4705614e71bSYork Sun 4715614e71bSYork Sun CONFIG_SYS_FSL_DDR3 4725614e71bSYork Sun Board config to use DDR3. It can be enabled for SoCs with 4735614e71bSYork Sun Freescale DDR3 controllers. 4745614e71bSYork Sun 475*690e4258SPrabhakar Kushwaha CONFIG_SYS_FSL_PBL_PBI 476*690e4258SPrabhakar Kushwaha It enables addition of RCW (Power on reset configuration) in built image. 477*690e4258SPrabhakar Kushwaha Please refer doc/README.pblimage for more details 478*690e4258SPrabhakar Kushwaha 479*690e4258SPrabhakar Kushwaha CONFIG_SYS_FSL_PBL_RCW 480*690e4258SPrabhakar Kushwaha It adds PBI(pre-boot instructions) commands in u-boot build image. 481*690e4258SPrabhakar Kushwaha PBI commands can be used to configure SoC before it starts the execution. 482*690e4258SPrabhakar Kushwaha Please refer doc/README.pblimage for more details 483*690e4258SPrabhakar Kushwaha 4840b953ffcSMarkus Klotzbuecher- Intel Monahans options: 4856d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MONAHANS_RUN_MODE_OSC_RATIO 4860b953ffcSMarkus Klotzbuecher 4870b953ffcSMarkus Klotzbuecher Defines the Monahans run mode to oscillator 4880b953ffcSMarkus Klotzbuecher ratio. Valid values are 8, 16, 24, 31. The core 4890b953ffcSMarkus Klotzbuecher frequency is this value multiplied by 13 MHz. 4900b953ffcSMarkus Klotzbuecher 4916d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MONAHANS_TURBO_RUN_MODE_RATIO 4920b953ffcSMarkus Klotzbuecher 4930b953ffcSMarkus Klotzbuecher Defines the Monahans turbo mode to oscillator 4940b953ffcSMarkus Klotzbuecher ratio. Valid values are 1 (default if undefined) and 4950b953ffcSMarkus Klotzbuecher 2. The core frequency as calculated above is multiplied 4960b953ffcSMarkus Klotzbuecher by this value. 4970b953ffcSMarkus Klotzbuecher 49892bbd64eSDaniel Schwierzeck- MIPS CPU options: 49992bbd64eSDaniel Schwierzeck CONFIG_SYS_INIT_SP_OFFSET 50092bbd64eSDaniel Schwierzeck 50192bbd64eSDaniel Schwierzeck Offset relative to CONFIG_SYS_SDRAM_BASE for initial stack 50292bbd64eSDaniel Schwierzeck pointer. This is needed for the temporary stack before 50392bbd64eSDaniel Schwierzeck relocation. 50492bbd64eSDaniel Schwierzeck 50592bbd64eSDaniel Schwierzeck CONFIG_SYS_MIPS_CACHE_MODE 50692bbd64eSDaniel Schwierzeck 50792bbd64eSDaniel Schwierzeck Cache operation mode for the MIPS CPU. 50892bbd64eSDaniel Schwierzeck See also arch/mips/include/asm/mipsregs.h. 50992bbd64eSDaniel Schwierzeck Possible values are: 51092bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_NO_WA 51192bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_WA 51292bbd64eSDaniel Schwierzeck CONF_CM_UNCACHED 51392bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_NONCOHERENT 51492bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_CE 51592bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_COW 51692bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_CUW 51792bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_ACCELERATED 51892bbd64eSDaniel Schwierzeck 51992bbd64eSDaniel Schwierzeck CONFIG_SYS_XWAY_EBU_BOOTCFG 52092bbd64eSDaniel Schwierzeck 52192bbd64eSDaniel Schwierzeck Special option for Lantiq XWAY SoCs for booting from NOR flash. 52292bbd64eSDaniel Schwierzeck See also arch/mips/cpu/mips32/start.S. 52392bbd64eSDaniel Schwierzeck 52492bbd64eSDaniel Schwierzeck CONFIG_XWAY_SWAP_BYTES 52592bbd64eSDaniel Schwierzeck 52692bbd64eSDaniel Schwierzeck Enable compilation of tools/xway-swap-bytes needed for Lantiq 52792bbd64eSDaniel Schwierzeck XWAY SoCs for booting from NOR flash. The U-Boot image needs to 52892bbd64eSDaniel Schwierzeck be swapped if a flash programmer is used. 52992bbd64eSDaniel Schwierzeck 530b67d8816SChristian Riesch- ARM options: 531b67d8816SChristian Riesch CONFIG_SYS_EXCEPTION_VECTORS_HIGH 532b67d8816SChristian Riesch 533b67d8816SChristian Riesch Select high exception vectors of the ARM core, e.g., do not 534b67d8816SChristian Riesch clear the V bit of the c1 register of CP15. 535b67d8816SChristian Riesch 5365356f545SAneesh V CONFIG_SYS_THUMB_BUILD 5375356f545SAneesh V 5385356f545SAneesh V Use this flag to build U-Boot using the Thumb instruction 5395356f545SAneesh V set for ARM architectures. Thumb instruction set provides 5405356f545SAneesh V better code density. For ARM architectures that support 5415356f545SAneesh V Thumb2 this flag will result in Thumb2 code generated by 5425356f545SAneesh V GCC. 5435356f545SAneesh V 544c5d4752cSStephen Warren CONFIG_ARM_ERRATA_716044 5450678587fSStephen Warren CONFIG_ARM_ERRATA_742230 5460678587fSStephen Warren CONFIG_ARM_ERRATA_743622 5470678587fSStephen Warren CONFIG_ARM_ERRATA_751472 5480678587fSStephen Warren 5490678587fSStephen Warren If set, the workarounds for these ARM errata are applied early 5500678587fSStephen Warren during U-Boot startup. Note that these options force the 5510678587fSStephen Warren workarounds to be applied; no CPU-type/version detection 5520678587fSStephen Warren exists, unlike the similar options in the Linux kernel. Do not 5530678587fSStephen Warren set these options unless they apply! 5540678587fSStephen Warren 555795659dcSStephen Warren- CPU timer options: 556795659dcSStephen Warren CONFIG_SYS_HZ 557795659dcSStephen Warren 558795659dcSStephen Warren The frequency of the timer returned by get_timer(). 559795659dcSStephen Warren get_timer() must operate in milliseconds and this CONFIG 560795659dcSStephen Warren option must be set to 1000. 561795659dcSStephen Warren 5625da627a4Swdenk- Linux Kernel Interface: 563c609719bSwdenk CONFIG_CLOCKS_IN_MHZ 564c609719bSwdenk 565c609719bSwdenk U-Boot stores all clock information in Hz 566c609719bSwdenk internally. For binary compatibility with older Linux 567c609719bSwdenk kernels (which expect the clocks passed in the 568c609719bSwdenk bd_info data to be in MHz) the environment variable 569c609719bSwdenk "clocks_in_mhz" can be defined so that U-Boot 570c609719bSwdenk converts clock data to MHZ before passing it to the 571c609719bSwdenk Linux kernel. 572c609719bSwdenk When CONFIG_CLOCKS_IN_MHZ is defined, a definition of 573c609719bSwdenk "clocks_in_mhz=1" is automatically included in the 574c609719bSwdenk default environment. 575c609719bSwdenk 5765da627a4Swdenk CONFIG_MEMSIZE_IN_BYTES [relevant for MIPS only] 5775da627a4Swdenk 57811ccc33fSMarcel Ziswiler When transferring memsize parameter to linux, some versions 5795da627a4Swdenk expect it to be in bytes, others in MB. 5805da627a4Swdenk Define CONFIG_MEMSIZE_IN_BYTES to make it in bytes. 5815da627a4Swdenk 582fec6d9eeSGerald Van Baren CONFIG_OF_LIBFDT 583f57f70aaSWolfgang Denk 584f57f70aaSWolfgang Denk New kernel versions are expecting firmware settings to be 585213bf8c8SGerald Van Baren passed using flattened device trees (based on open firmware 586213bf8c8SGerald Van Baren concepts). 587213bf8c8SGerald Van Baren 588213bf8c8SGerald Van Baren CONFIG_OF_LIBFDT 589213bf8c8SGerald Van Baren * New libfdt-based support 590213bf8c8SGerald Van Baren * Adds the "fdt" command 5913bb342fcSKim Phillips * The bootm command automatically updates the fdt 592213bf8c8SGerald Van Baren 593b55ae402SMarcel Ziswiler OF_CPU - The proper name of the cpus node (only required for 594b55ae402SMarcel Ziswiler MPC512X and MPC5xxx based boards). 595b55ae402SMarcel Ziswiler OF_SOC - The proper name of the soc node (only required for 596b55ae402SMarcel Ziswiler MPC512X and MPC5xxx based boards). 597f57f70aaSWolfgang Denk OF_TBCLK - The timebase frequency. 598c2871f03SKumar Gala OF_STDOUT_PATH - The path to the console device 599f57f70aaSWolfgang Denk 60011ccc33fSMarcel Ziswiler boards with QUICC Engines require OF_QE to set UCC MAC 60111ccc33fSMarcel Ziswiler addresses 6023bb342fcSKim Phillips 6034e253137SKumar Gala CONFIG_OF_BOARD_SETUP 6044e253137SKumar Gala 6054e253137SKumar Gala Board code has addition modification that it wants to make 6064e253137SKumar Gala to the flat device tree before handing it off to the kernel 6076705d81eSwdenk 6080267768eSMatthew McClintock CONFIG_OF_BOOT_CPU 6090267768eSMatthew McClintock 61011ccc33fSMarcel Ziswiler This define fills in the correct boot CPU in the boot 6110267768eSMatthew McClintock param header, the default value is zero if undefined. 6120267768eSMatthew McClintock 6133887c3fbSHeiko Schocher CONFIG_OF_IDE_FIXUP 6143887c3fbSHeiko Schocher 6153887c3fbSHeiko Schocher U-Boot can detect if an IDE device is present or not. 6163887c3fbSHeiko Schocher If not, and this new config option is activated, U-Boot 6173887c3fbSHeiko Schocher removes the ATA node from the DTS before booting Linux, 6183887c3fbSHeiko Schocher so the Linux IDE driver does not probe the device and 6193887c3fbSHeiko Schocher crash. This is needed for buggy hardware (uc101) where 6203887c3fbSHeiko Schocher no pull down resistor is connected to the signal IDE5V_DD7. 6213887c3fbSHeiko Schocher 6227eb29398SIgor Grinberg CONFIG_MACH_TYPE [relevant for ARM only][mandatory] 6237eb29398SIgor Grinberg 6247eb29398SIgor Grinberg This setting is mandatory for all boards that have only one 6257eb29398SIgor Grinberg machine type and must be used to specify the machine type 6267eb29398SIgor Grinberg number as it appears in the ARM machine registry 6277eb29398SIgor Grinberg (see http://www.arm.linux.org.uk/developer/machines/). 6287eb29398SIgor Grinberg Only boards that have multiple machine types supported 6297eb29398SIgor Grinberg in a single configuration file and the machine type is 6307eb29398SIgor Grinberg runtime discoverable, do not have to use this setting. 6317eb29398SIgor Grinberg 6320b2f4ecaSNiklaus Giger- vxWorks boot parameters: 6330b2f4ecaSNiklaus Giger 6340b2f4ecaSNiklaus Giger bootvx constructs a valid bootline using the following 6350b2f4ecaSNiklaus Giger environments variables: bootfile, ipaddr, serverip, hostname. 6360b2f4ecaSNiklaus Giger It loads the vxWorks image pointed bootfile. 6370b2f4ecaSNiklaus Giger 6380b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_BOOT_DEVICE - The vxworks device name 6390b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_MAC_PTR - Ethernet 6 byte MA -address 6400b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_SERVERNAME - Name of the server 6410b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_BOOT_ADDR - Address of boot parameters 6420b2f4ecaSNiklaus Giger 6430b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_ADD_PARAMS 6440b2f4ecaSNiklaus Giger 6450b2f4ecaSNiklaus Giger Add it at the end of the bootline. E.g "u=username pw=secret" 6460b2f4ecaSNiklaus Giger 6470b2f4ecaSNiklaus Giger Note: If a "bootargs" environment is defined, it will overwride 6480b2f4ecaSNiklaus Giger the defaults discussed just above. 6490b2f4ecaSNiklaus Giger 6502c451f78SAneesh V- Cache Configuration: 6512c451f78SAneesh V CONFIG_SYS_ICACHE_OFF - Do not enable instruction cache in U-Boot 6522c451f78SAneesh V CONFIG_SYS_DCACHE_OFF - Do not enable data cache in U-Boot 6532c451f78SAneesh V CONFIG_SYS_L2CACHE_OFF- Do not enable L2 cache in U-Boot 6542c451f78SAneesh V 65593bc2193SAneesh V- Cache Configuration for ARM: 65693bc2193SAneesh V CONFIG_SYS_L2_PL310 - Enable support for ARM PL310 L2 cache 65793bc2193SAneesh V controller 65893bc2193SAneesh V CONFIG_SYS_PL310_BASE - Physical base address of PL310 65993bc2193SAneesh V controller register space 66093bc2193SAneesh V 6616705d81eSwdenk- Serial Ports: 66248d0192fSAndreas Engel CONFIG_PL010_SERIAL 6636705d81eSwdenk 6646705d81eSwdenk Define this if you want support for Amba PrimeCell PL010 UARTs. 6656705d81eSwdenk 66648d0192fSAndreas Engel CONFIG_PL011_SERIAL 6676705d81eSwdenk 6686705d81eSwdenk Define this if you want support for Amba PrimeCell PL011 UARTs. 6696705d81eSwdenk 6706705d81eSwdenk CONFIG_PL011_CLOCK 6716705d81eSwdenk 6726705d81eSwdenk If you have Amba PrimeCell PL011 UARTs, set this variable to 6736705d81eSwdenk the clock speed of the UARTs. 6746705d81eSwdenk 6756705d81eSwdenk CONFIG_PL01x_PORTS 6766705d81eSwdenk 6776705d81eSwdenk If you have Amba PrimeCell PL010 or PL011 UARTs on your board, 6786705d81eSwdenk define this to a list of base addresses for each (supported) 6796705d81eSwdenk port. See e.g. include/configs/versatile.h 6806705d81eSwdenk 681910f1ae3SJohn Rigby CONFIG_PL011_SERIAL_RLCR 682910f1ae3SJohn Rigby 683910f1ae3SJohn Rigby Some vendor versions of PL011 serial ports (e.g. ST-Ericsson U8500) 684910f1ae3SJohn Rigby have separate receive and transmit line control registers. Set 685910f1ae3SJohn Rigby this variable to initialize the extra register. 686910f1ae3SJohn Rigby 687910f1ae3SJohn Rigby CONFIG_PL011_SERIAL_FLUSH_ON_INIT 688910f1ae3SJohn Rigby 689910f1ae3SJohn Rigby On some platforms (e.g. U8500) U-Boot is loaded by a second stage 690910f1ae3SJohn Rigby boot loader that has already initialized the UART. Define this 691910f1ae3SJohn Rigby variable to flush the UART at init time. 692910f1ae3SJohn Rigby 6936705d81eSwdenk 694c609719bSwdenk- Console Interface: 695c609719bSwdenk Depending on board, define exactly one serial port 696c609719bSwdenk (like CONFIG_8xx_CONS_SMC1, CONFIG_8xx_CONS_SMC2, 697c609719bSwdenk CONFIG_8xx_CONS_SCC1, ...), or switch off the serial 698c609719bSwdenk console by defining CONFIG_8xx_CONS_NONE 699c609719bSwdenk 700c609719bSwdenk Note: if CONFIG_8xx_CONS_NONE is defined, the serial 701c609719bSwdenk port routines must be defined elsewhere 702c609719bSwdenk (i.e. serial_init(), serial_getc(), ...) 703c609719bSwdenk 704c609719bSwdenk CONFIG_CFB_CONSOLE 705c609719bSwdenk Enables console device for a color framebuffer. Needs following 706c53043b7SWolfgang Denk defines (cf. smiLynxEM, i8042) 707c609719bSwdenk VIDEO_FB_LITTLE_ENDIAN graphic memory organisation 708c609719bSwdenk (default big endian) 709c609719bSwdenk VIDEO_HW_RECTFILL graphic chip supports 710c609719bSwdenk rectangle fill 711c609719bSwdenk (cf. smiLynxEM) 712c609719bSwdenk VIDEO_HW_BITBLT graphic chip supports 713c609719bSwdenk bit-blit (cf. smiLynxEM) 714c609719bSwdenk VIDEO_VISIBLE_COLS visible pixel columns 715c609719bSwdenk (cols=pitch) 716c609719bSwdenk VIDEO_VISIBLE_ROWS visible pixel rows 717c609719bSwdenk VIDEO_PIXEL_SIZE bytes per pixel 718c609719bSwdenk VIDEO_DATA_FORMAT graphic data format 719c609719bSwdenk (0-5, cf. cfb_console.c) 720c609719bSwdenk VIDEO_FB_ADRS framebuffer address 721c609719bSwdenk VIDEO_KBD_INIT_FCT keyboard int fct 722c609719bSwdenk (i.e. i8042_kbd_init()) 723c609719bSwdenk VIDEO_TSTC_FCT test char fct 724c609719bSwdenk (i.e. i8042_tstc) 725c609719bSwdenk VIDEO_GETC_FCT get char fct 726c609719bSwdenk (i.e. i8042_getc) 727c609719bSwdenk CONFIG_CONSOLE_CURSOR cursor drawing on/off 728c609719bSwdenk (requires blink timer 729c609719bSwdenk cf. i8042.c) 7306d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CONSOLE_BLINK_COUNT blink interval (cf. i8042.c) 731c609719bSwdenk CONFIG_CONSOLE_TIME display time/date info in 732c609719bSwdenk upper right corner 733602ad3b3SJon Loeliger (requires CONFIG_CMD_DATE) 734c609719bSwdenk CONFIG_VIDEO_LOGO display Linux logo in 735c609719bSwdenk upper left corner 736a6c7ad2fSwdenk CONFIG_VIDEO_BMP_LOGO use bmp_logo.h instead of 737a6c7ad2fSwdenk linux_logo.h for logo. 738a6c7ad2fSwdenk Requires CONFIG_VIDEO_LOGO 739c609719bSwdenk CONFIG_CONSOLE_EXTRA_INFO 74011ccc33fSMarcel Ziswiler additional board info beside 741c609719bSwdenk the logo 742c609719bSwdenk 74333a35bbbSPali Rohár When CONFIG_CFB_CONSOLE_ANSI is defined, console will support 74433a35bbbSPali Rohár a limited number of ANSI escape sequences (cursor control, 74533a35bbbSPali Rohár erase functions and limited graphics rendition control). 74633a35bbbSPali Rohár 747c609719bSwdenk When CONFIG_CFB_CONSOLE is defined, video console is 748c609719bSwdenk default i/o. Serial console can be forced with 749c609719bSwdenk environment 'console=serial'. 750c609719bSwdenk 751a3ad8e26Swdenk When CONFIG_SILENT_CONSOLE is defined, all console 752a3ad8e26Swdenk messages (by U-Boot and Linux!) can be silenced with 753a3ad8e26Swdenk the "silent" environment variable. See 754a3ad8e26Swdenk doc/README.silent for more information. 755a3ad8e26Swdenk 75645ae2546SHeiko Schocher CONFIG_SYS_CONSOLE_BG_COL: define the backgroundcolor, default 75745ae2546SHeiko Schocher is 0x00. 75845ae2546SHeiko Schocher CONFIG_SYS_CONSOLE_FG_COL: define the foregroundcolor, default 75945ae2546SHeiko Schocher is 0xa0. 76045ae2546SHeiko Schocher 761c609719bSwdenk- Console Baudrate: 762c609719bSwdenk CONFIG_BAUDRATE - in bps 763c609719bSwdenk Select one of the baudrates listed in 7646d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BAUDRATE_TABLE, see below. 7656d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BRGCLK_PRESCALE, baudrate prescale 766c609719bSwdenk 767c92fac91SHeiko Schocher- Console Rx buffer length 768c92fac91SHeiko Schocher With CONFIG_SYS_SMC_RXBUFLEN it is possible to define 769c92fac91SHeiko Schocher the maximum receive buffer length for the SMC. 7702b3f12c2SHeiko Schocher This option is actual only for 82xx and 8xx possible. 771c92fac91SHeiko Schocher If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE 772c92fac91SHeiko Schocher must be defined, to setup the maximum idle timeout for 773c92fac91SHeiko Schocher the SMC. 774c92fac91SHeiko Schocher 7759558b48aSGraeme Russ- Pre-Console Buffer: 7769558b48aSGraeme Russ Prior to the console being initialised (i.e. serial UART 7779558b48aSGraeme Russ initialised etc) all console output is silently discarded. 7789558b48aSGraeme Russ Defining CONFIG_PRE_CONSOLE_BUFFER will cause U-Boot to 7799558b48aSGraeme Russ buffer any console messages prior to the console being 7809558b48aSGraeme Russ initialised to a buffer of size CONFIG_PRE_CON_BUF_SZ 7819558b48aSGraeme Russ bytes located at CONFIG_PRE_CON_BUF_ADDR. The buffer is 7829558b48aSGraeme Russ a circular buffer, so if more than CONFIG_PRE_CON_BUF_SZ 7839558b48aSGraeme Russ bytes are output before the console is initialised, the 7849558b48aSGraeme Russ earlier bytes are discarded. 7859558b48aSGraeme Russ 7869558b48aSGraeme Russ 'Sane' compilers will generate smaller code if 7879558b48aSGraeme Russ CONFIG_PRE_CON_BUF_SZ is a power of 2 7889558b48aSGraeme Russ 789046a37bdSSonny Rao- Safe printf() functions 790046a37bdSSonny Rao Define CONFIG_SYS_VSNPRINTF to compile in safe versions of 791046a37bdSSonny Rao the printf() functions. These are defined in 792046a37bdSSonny Rao include/vsprintf.h and include snprintf(), vsnprintf() and 793046a37bdSSonny Rao so on. Code size increase is approximately 300-500 bytes. 794046a37bdSSonny Rao If this option is not given then these functions will 795046a37bdSSonny Rao silently discard their buffer size argument - this means 796046a37bdSSonny Rao you are not getting any overflow checking in this case. 797046a37bdSSonny Rao 798c609719bSwdenk- Boot Delay: CONFIG_BOOTDELAY - in seconds 799c609719bSwdenk Delay before automatically booting the default image; 800c609719bSwdenk set to -1 to disable autoboot. 80193d7212fSJoe Hershberger set to -2 to autoboot with no delay and not check for abort 80293d7212fSJoe Hershberger (even when CONFIG_ZERO_BOOTDELAY_CHECK is defined). 803c609719bSwdenk 804c609719bSwdenk See doc/README.autoboot for these options that 805c609719bSwdenk work with CONFIG_BOOTDELAY. None are required. 806c609719bSwdenk CONFIG_BOOT_RETRY_TIME 807c609719bSwdenk CONFIG_BOOT_RETRY_MIN 808c609719bSwdenk CONFIG_AUTOBOOT_KEYED 809c609719bSwdenk CONFIG_AUTOBOOT_PROMPT 810c609719bSwdenk CONFIG_AUTOBOOT_DELAY_STR 811c609719bSwdenk CONFIG_AUTOBOOT_STOP_STR 812c609719bSwdenk CONFIG_AUTOBOOT_DELAY_STR2 813c609719bSwdenk CONFIG_AUTOBOOT_STOP_STR2 814c609719bSwdenk CONFIG_ZERO_BOOTDELAY_CHECK 815c609719bSwdenk CONFIG_RESET_TO_RETRY 816c609719bSwdenk 817c609719bSwdenk- Autoboot Command: 818c609719bSwdenk CONFIG_BOOTCOMMAND 819c609719bSwdenk Only needed when CONFIG_BOOTDELAY is enabled; 820c609719bSwdenk define a command string that is automatically executed 821c609719bSwdenk when no character is read on the console interface 822c609719bSwdenk within "Boot Delay" after reset. 823c609719bSwdenk 824c609719bSwdenk CONFIG_BOOTARGS 825c609719bSwdenk This can be used to pass arguments to the bootm 826c609719bSwdenk command. The value of CONFIG_BOOTARGS goes into the 827c609719bSwdenk environment value "bootargs". 828c609719bSwdenk 829c609719bSwdenk CONFIG_RAMBOOT and CONFIG_NFSBOOT 830c609719bSwdenk The value of these goes into the environment as 831c609719bSwdenk "ramboot" and "nfsboot" respectively, and can be used 832c609719bSwdenk as a convenience, when switching between booting from 83311ccc33fSMarcel Ziswiler RAM and NFS. 834c609719bSwdenk 835eda0ba38SHeiko Schocher- Bootcount: 836eda0ba38SHeiko Schocher CONFIG_BOOTCOUNT_LIMIT 837eda0ba38SHeiko Schocher Implements a mechanism for detecting a repeating reboot 838eda0ba38SHeiko Schocher cycle, see: 839eda0ba38SHeiko Schocher http://www.denx.de/wiki/view/DULG/UBootBootCountLimit 840eda0ba38SHeiko Schocher 841eda0ba38SHeiko Schocher CONFIG_BOOTCOUNT_ENV 842eda0ba38SHeiko Schocher If no softreset save registers are found on the hardware 843eda0ba38SHeiko Schocher "bootcount" is stored in the environment. To prevent a 844eda0ba38SHeiko Schocher saveenv on all reboots, the environment variable 845eda0ba38SHeiko Schocher "upgrade_available" is used. If "upgrade_available" is 846eda0ba38SHeiko Schocher 0, "bootcount" is always 0, if "upgrade_available" is 847eda0ba38SHeiko Schocher 1 "bootcount" is incremented in the environment. 848eda0ba38SHeiko Schocher So the Userspace Applikation must set the "upgrade_available" 849eda0ba38SHeiko Schocher and "bootcount" variable to 0, if a boot was successfully. 850eda0ba38SHeiko Schocher 851c609719bSwdenk- Pre-Boot Commands: 852c609719bSwdenk CONFIG_PREBOOT 853c609719bSwdenk 854c609719bSwdenk When this option is #defined, the existence of the 855c609719bSwdenk environment variable "preboot" will be checked 856c609719bSwdenk immediately before starting the CONFIG_BOOTDELAY 857c609719bSwdenk countdown and/or running the auto-boot command resp. 858c609719bSwdenk entering interactive mode. 859c609719bSwdenk 860c609719bSwdenk This feature is especially useful when "preboot" is 861c609719bSwdenk automatically generated or modified. For an example 862c609719bSwdenk see the LWMON board specific code: here "preboot" is 863c609719bSwdenk modified when the user holds down a certain 864c609719bSwdenk combination of keys on the (special) keyboard when 865c609719bSwdenk booting the systems 866c609719bSwdenk 867c609719bSwdenk- Serial Download Echo Mode: 868c609719bSwdenk CONFIG_LOADS_ECHO 869c609719bSwdenk If defined to 1, all characters received during a 870c609719bSwdenk serial download (using the "loads" command) are 871c609719bSwdenk echoed back. This might be needed by some terminal 872c609719bSwdenk emulations (like "cu"), but may as well just take 873c609719bSwdenk time on others. This setting #define's the initial 874c609719bSwdenk value of the "loads_echo" environment variable. 875c609719bSwdenk 876602ad3b3SJon Loeliger- Kgdb Serial Baudrate: (if CONFIG_CMD_KGDB is defined) 877c609719bSwdenk CONFIG_KGDB_BAUDRATE 878c609719bSwdenk Select one of the baudrates listed in 8796d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BAUDRATE_TABLE, see below. 880c609719bSwdenk 881c609719bSwdenk- Monitor Functions: 882602ad3b3SJon Loeliger Monitor commands can be included or excluded 883602ad3b3SJon Loeliger from the build by using the #include files 884c6c621bdSStephen Warren <config_cmd_all.h> and #undef'ing unwanted 885c6c621bdSStephen Warren commands, or using <config_cmd_default.h> 886602ad3b3SJon Loeliger and augmenting with additional #define's 887602ad3b3SJon Loeliger for wanted commands. 888c609719bSwdenk 889602ad3b3SJon Loeliger The default command configuration includes all commands 890602ad3b3SJon Loeliger except those marked below with a "*". 891602ad3b3SJon Loeliger 892602ad3b3SJon Loeliger CONFIG_CMD_ASKENV * ask for env variable 893602ad3b3SJon Loeliger CONFIG_CMD_BDI bdinfo 894602ad3b3SJon Loeliger CONFIG_CMD_BEDBUG * Include BedBug Debugger 895602ad3b3SJon Loeliger CONFIG_CMD_BMP * BMP support 896602ad3b3SJon Loeliger CONFIG_CMD_BSP * Board specific commands 897602ad3b3SJon Loeliger CONFIG_CMD_BOOTD bootd 898602ad3b3SJon Loeliger CONFIG_CMD_CACHE * icache, dcache 899602ad3b3SJon Loeliger CONFIG_CMD_CONSOLE coninfo 900710b9938SMike Frysinger CONFIG_CMD_CRC32 * crc32 901602ad3b3SJon Loeliger CONFIG_CMD_DATE * support for RTC, date/time... 902602ad3b3SJon Loeliger CONFIG_CMD_DHCP * DHCP support 903602ad3b3SJon Loeliger CONFIG_CMD_DIAG * Diagnostics 904a7c93104SPeter Tyser CONFIG_CMD_DS4510 * ds4510 I2C gpio commands 905a7c93104SPeter Tyser CONFIG_CMD_DS4510_INFO * ds4510 I2C info command 906a7c93104SPeter Tyser CONFIG_CMD_DS4510_MEM * ds4510 I2C eeprom/sram commansd 907a7c93104SPeter Tyser CONFIG_CMD_DS4510_RST * ds4510 I2C rst command 908602ad3b3SJon Loeliger CONFIG_CMD_DTT * Digital Therm and Thermostat 909602ad3b3SJon Loeliger CONFIG_CMD_ECHO echo arguments 910246c6922SPeter Tyser CONFIG_CMD_EDITENV edit env variable 911602ad3b3SJon Loeliger CONFIG_CMD_EEPROM * EEPROM read/write support 912602ad3b3SJon Loeliger CONFIG_CMD_ELF * bootelf, bootvx 9135e2b3e0cSJoe Hershberger CONFIG_CMD_ENV_CALLBACK * display details about env callbacks 914fffad71bSJoe Hershberger CONFIG_CMD_ENV_FLAGS * display details about env flags 91588733e2cSAndrew Ruder CONFIG_CMD_ENV_EXISTS * check existence of env variable 9160c79cda0SMike Frysinger CONFIG_CMD_EXPORTENV * export the environment 91703e2ecf6SStephen Warren CONFIG_CMD_EXT2 * ext2 command support 91803e2ecf6SStephen Warren CONFIG_CMD_EXT4 * ext4 command support 919bdab39d3SMike Frysinger CONFIG_CMD_SAVEENV saveenv 920602ad3b3SJon Loeliger CONFIG_CMD_FDC * Floppy Disk Support 92103e2ecf6SStephen Warren CONFIG_CMD_FAT * FAT command support 922602ad3b3SJon Loeliger CONFIG_CMD_FDOS * Dos diskette Support 923602ad3b3SJon Loeliger CONFIG_CMD_FLASH flinfo, erase, protect 924602ad3b3SJon Loeliger CONFIG_CMD_FPGA FPGA device initialization support 9254d98b5c8SVincent Stehlé CONFIG_CMD_FUSE * Device fuse support 92653fdc7efSAnton Staaf CONFIG_CMD_GETTIME * Get time since boot 927a641b979SMike Frysinger CONFIG_CMD_GO * the 'go' command (exec code) 928a000b795SKim Phillips CONFIG_CMD_GREPENV * search environment 929bf36c5d5SSimon Glass CONFIG_CMD_HASH * calculate hash / digest 930602ad3b3SJon Loeliger CONFIG_CMD_HWFLOW * RTS/CTS hw flow control 931602ad3b3SJon Loeliger CONFIG_CMD_I2C * I2C serial bus support 932602ad3b3SJon Loeliger CONFIG_CMD_IDE * IDE harddisk support 933602ad3b3SJon Loeliger CONFIG_CMD_IMI iminfo 9348fdf1e0fSVipin Kumar CONFIG_CMD_IMLS List all images found in NOR flash 9354d98b5c8SVincent Stehlé CONFIG_CMD_IMLS_NAND * List all images found in NAND flash 936602ad3b3SJon Loeliger CONFIG_CMD_IMMAP * IMMR dump support 9370c79cda0SMike Frysinger CONFIG_CMD_IMPORTENV * import an environment 938c167cc02SJoe Hershberger CONFIG_CMD_INI * import data from an ini file into the env 939602ad3b3SJon Loeliger CONFIG_CMD_IRQ * irqinfo 940602ad3b3SJon Loeliger CONFIG_CMD_ITEST Integer/string test of 2 values 941602ad3b3SJon Loeliger CONFIG_CMD_JFFS2 * JFFS2 Support 942602ad3b3SJon Loeliger CONFIG_CMD_KGDB * kgdb 9434d98b5c8SVincent Stehlé CONFIG_CMD_LDRINFO * ldrinfo (display Blackfin loader) 944d22c338eSJoe Hershberger CONFIG_CMD_LINK_LOCAL * link-local IP address auto-configuration 945d22c338eSJoe Hershberger (169.254.*.*) 946602ad3b3SJon Loeliger CONFIG_CMD_LOADB loadb 947602ad3b3SJon Loeliger CONFIG_CMD_LOADS loads 9484d98b5c8SVincent Stehlé CONFIG_CMD_MD5SUM * print md5 message digest 94902c9aa1dSRobin Getz (requires CONFIG_CMD_MEMORY and CONFIG_MD5) 95015a33e49SSimon Glass CONFIG_CMD_MEMINFO * Display detailed memory information 951602ad3b3SJon Loeliger CONFIG_CMD_MEMORY md, mm, nm, mw, cp, cmp, crc, base, 952a2681707SWolfgang Denk loop, loopw 9534d98b5c8SVincent Stehlé CONFIG_CMD_MEMTEST * mtest 954602ad3b3SJon Loeliger CONFIG_CMD_MISC Misc functions like sleep etc 955602ad3b3SJon Loeliger CONFIG_CMD_MMC * MMC memory mapped support 956602ad3b3SJon Loeliger CONFIG_CMD_MII * MII utility commands 95768d7d651SStefan Roese CONFIG_CMD_MTDPARTS * MTD partition support 958602ad3b3SJon Loeliger CONFIG_CMD_NAND * NAND support 959602ad3b3SJon Loeliger CONFIG_CMD_NET bootp, tftpboot, rarpboot 9604d98b5c8SVincent Stehlé CONFIG_CMD_NFS NFS support 961e92739d3SPeter Tyser CONFIG_CMD_PCA953X * PCA953x I2C gpio commands 962e92739d3SPeter Tyser CONFIG_CMD_PCA953X_INFO * PCA953x I2C gpio info command 963602ad3b3SJon Loeliger CONFIG_CMD_PCI * pciinfo 964602ad3b3SJon Loeliger CONFIG_CMD_PCMCIA * PCMCIA support 965602ad3b3SJon Loeliger CONFIG_CMD_PING * send ICMP ECHO_REQUEST to network 966602ad3b3SJon Loeliger host 967602ad3b3SJon Loeliger CONFIG_CMD_PORTIO * Port I/O 968ff048ea9SKenneth Waters CONFIG_CMD_READ * Read raw data from partition 969602ad3b3SJon Loeliger CONFIG_CMD_REGINFO * Register dump 970602ad3b3SJon Loeliger CONFIG_CMD_RUN run command in env variable 971d304931fSSimon Glass CONFIG_CMD_SANDBOX * sb command to access sandbox features 972602ad3b3SJon Loeliger CONFIG_CMD_SAVES * save S record dump 973602ad3b3SJon Loeliger CONFIG_CMD_SCSI * SCSI Support 974602ad3b3SJon Loeliger CONFIG_CMD_SDRAM * print SDRAM configuration information 975602ad3b3SJon Loeliger (requires CONFIG_CMD_I2C) 976602ad3b3SJon Loeliger CONFIG_CMD_SETGETDCR Support for DCR Register access 977602ad3b3SJon Loeliger (4xx only) 978f61ec45eSEric Nelson CONFIG_CMD_SF * Read/write/erase SPI NOR flash 9794d98b5c8SVincent Stehlé CONFIG_CMD_SHA1SUM * print sha1 memory digest 98002c9aa1dSRobin Getz (requires CONFIG_CMD_MEMORY) 9817d861d95SBob Liu CONFIG_CMD_SOFTSWITCH * Soft switch setting command for BF60x 98274de7aefSWolfgang Denk CONFIG_CMD_SOURCE "source" command Support 983602ad3b3SJon Loeliger CONFIG_CMD_SPI * SPI serial bus support 9847a83af07SLuca Ceresoli CONFIG_CMD_TFTPSRV * TFTP transfer in server mode 9851fb7cd49SSimon Glass CONFIG_CMD_TFTPPUT * TFTP put command (upload) 986da83bcd7SJoe Hershberger CONFIG_CMD_TIME * run command and report execution time (ARM specific) 987da83bcd7SJoe Hershberger CONFIG_CMD_TIMER * access to the system tick timer 988602ad3b3SJon Loeliger CONFIG_CMD_USB * USB support 989602ad3b3SJon Loeliger CONFIG_CMD_CDP * Cisco Discover Protocol support 990c8339f51SMarek Vasut CONFIG_CMD_MFSL * Microblaze FSL support 9914d98b5c8SVincent Stehlé CONFIG_CMD_XIMG Load part of Multi Image 992c609719bSwdenk 993c609719bSwdenk 994c609719bSwdenk EXAMPLE: If you want all functions except of network 995c609719bSwdenk support you can write: 996c609719bSwdenk 997602ad3b3SJon Loeliger #include "config_cmd_all.h" 998602ad3b3SJon Loeliger #undef CONFIG_CMD_NET 999c609719bSwdenk 1000213bf8c8SGerald Van Baren Other Commands: 1001213bf8c8SGerald Van Baren fdt (flattened device tree) command: CONFIG_OF_LIBFDT 1002c609719bSwdenk 1003c609719bSwdenk Note: Don't enable the "icache" and "dcache" commands 1004602ad3b3SJon Loeliger (configuration option CONFIG_CMD_CACHE) unless you know 1005c609719bSwdenk what you (and your U-Boot users) are doing. Data 1006c609719bSwdenk cache cannot be enabled on systems like the 8xx or 1007c609719bSwdenk 8260 (where accesses to the IMMR region must be 1008c609719bSwdenk uncached), and it cannot be disabled on all other 1009c609719bSwdenk systems where we (mis-) use the data cache to hold an 1010c609719bSwdenk initial stack and some data. 1011c609719bSwdenk 1012c609719bSwdenk 1013c609719bSwdenk XXX - this list needs to get updated! 1014c609719bSwdenk 1015a5ecbe62SWolfgang Denk- Regular expression support: 1016a5ecbe62SWolfgang Denk CONFIG_REGEX 1017a5ecbe62SWolfgang Denk If this variable is defined, U-Boot is linked against 1018a5ecbe62SWolfgang Denk the SLRE (Super Light Regular Expression) library, 1019a5ecbe62SWolfgang Denk which adds regex support to some commands, as for 1020a5ecbe62SWolfgang Denk example "env grep" and "setexpr". 1021a5ecbe62SWolfgang Denk 102245ba8077SSimon Glass- Device tree: 102345ba8077SSimon Glass CONFIG_OF_CONTROL 102445ba8077SSimon Glass If this variable is defined, U-Boot will use a device tree 102545ba8077SSimon Glass to configure its devices, instead of relying on statically 102645ba8077SSimon Glass compiled #defines in the board file. This option is 102745ba8077SSimon Glass experimental and only available on a few boards. The device 102845ba8077SSimon Glass tree is available in the global data as gd->fdt_blob. 102945ba8077SSimon Glass 10302c0f79e4SSimon Glass U-Boot needs to get its device tree from somewhere. This can 10312c0f79e4SSimon Glass be done using one of the two options below: 1032bbb0b128SSimon Glass 1033bbb0b128SSimon Glass CONFIG_OF_EMBED 1034bbb0b128SSimon Glass If this variable is defined, U-Boot will embed a device tree 1035bbb0b128SSimon Glass binary in its image. This device tree file should be in the 1036bbb0b128SSimon Glass board directory and called <soc>-<board>.dts. The binary file 1037bbb0b128SSimon Glass is then picked up in board_init_f() and made available through 1038bbb0b128SSimon Glass the global data structure as gd->blob. 103945ba8077SSimon Glass 10402c0f79e4SSimon Glass CONFIG_OF_SEPARATE 10412c0f79e4SSimon Glass If this variable is defined, U-Boot will build a device tree 10422c0f79e4SSimon Glass binary. It will be called u-boot.dtb. Architecture-specific 10432c0f79e4SSimon Glass code will locate it at run-time. Generally this works by: 10442c0f79e4SSimon Glass 10452c0f79e4SSimon Glass cat u-boot.bin u-boot.dtb >image.bin 10462c0f79e4SSimon Glass 10472c0f79e4SSimon Glass and in fact, U-Boot does this for you, creating a file called 10482c0f79e4SSimon Glass u-boot-dtb.bin which is useful in the common case. You can 10492c0f79e4SSimon Glass still use the individual files if you need something more 10502c0f79e4SSimon Glass exotic. 10512c0f79e4SSimon Glass 1052c609719bSwdenk- Watchdog: 1053c609719bSwdenk CONFIG_WATCHDOG 1054c609719bSwdenk If this variable is defined, it enables watchdog 10556abe6fb6SDetlev Zundel support for the SoC. There must be support in the SoC 10566abe6fb6SDetlev Zundel specific code for a watchdog. For the 8xx and 8260 10576abe6fb6SDetlev Zundel CPUs, the SIU Watchdog feature is enabled in the SYPCR 10586abe6fb6SDetlev Zundel register. When supported for a specific SoC is 10596abe6fb6SDetlev Zundel available, then no further board specific code should 10606abe6fb6SDetlev Zundel be needed to use it. 10616abe6fb6SDetlev Zundel 10626abe6fb6SDetlev Zundel CONFIG_HW_WATCHDOG 10636abe6fb6SDetlev Zundel When using a watchdog circuitry external to the used 10646abe6fb6SDetlev Zundel SoC, then define this variable and provide board 10656abe6fb6SDetlev Zundel specific code for the "hw_watchdog_reset" function. 1066c609719bSwdenk 1067c1551ea8Sstroese- U-Boot Version: 1068c1551ea8Sstroese CONFIG_VERSION_VARIABLE 1069c1551ea8Sstroese If this variable is defined, an environment variable 1070c1551ea8Sstroese named "ver" is created by U-Boot showing the U-Boot 1071c1551ea8Sstroese version as printed by the "version" command. 1072a1ea8e51SBenoît Thébaudeau Any change to this variable will be reverted at the 1073a1ea8e51SBenoît Thébaudeau next reset. 1074c1551ea8Sstroese 1075c609719bSwdenk- Real-Time Clock: 1076c609719bSwdenk 1077602ad3b3SJon Loeliger When CONFIG_CMD_DATE is selected, the type of the RTC 1078c609719bSwdenk has to be selected, too. Define exactly one of the 1079c609719bSwdenk following options: 1080c609719bSwdenk 1081c609719bSwdenk CONFIG_RTC_MPC8xx - use internal RTC of MPC8xx 1082c609719bSwdenk CONFIG_RTC_PCF8563 - use Philips PCF8563 RTC 10834e8b7544SFabio Estevam CONFIG_RTC_MC13XXX - use MC13783 or MC13892 RTC 1084c609719bSwdenk CONFIG_RTC_MC146818 - use MC146818 RTC 10851cb8e980Swdenk CONFIG_RTC_DS1307 - use Maxim, Inc. DS1307 RTC 1086c609719bSwdenk CONFIG_RTC_DS1337 - use Maxim, Inc. DS1337 RTC 10877f70e853Swdenk CONFIG_RTC_DS1338 - use Maxim, Inc. DS1338 RTC 10883bac3513Swdenk CONFIG_RTC_DS164x - use Dallas DS164x RTC 10899536dfccSTor Krill CONFIG_RTC_ISL1208 - use Intersil ISL1208 RTC 10904c0d4c3bSwdenk CONFIG_RTC_MAX6900 - use Maxim, Inc. MAX6900 RTC 10916d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_RTC_DS1337_NOOSC - Turn off the OSC output for DS1337 109271d19f30SHeiko Schocher CONFIG_SYS_RV3029_TCR - enable trickle charger on 109371d19f30SHeiko Schocher RV3029 RTC. 1094c609719bSwdenk 1095b37c7e5eSwdenk Note that if the RTC uses I2C, then the I2C interface 1096b37c7e5eSwdenk must also be configured. See I2C Support, below. 1097b37c7e5eSwdenk 1098e92739d3SPeter Tyser- GPIO Support: 1099e92739d3SPeter Tyser CONFIG_PCA953X - use NXP's PCA953X series I2C GPIO 1100e92739d3SPeter Tyser 11015dec49caSChris Packham The CONFIG_SYS_I2C_PCA953X_WIDTH option specifies a list of 11025dec49caSChris Packham chip-ngpio pairs that tell the PCA953X driver the number of 11035dec49caSChris Packham pins supported by a particular chip. 11045dec49caSChris Packham 1105e92739d3SPeter Tyser Note that if the GPIO device uses I2C, then the I2C interface 1106e92739d3SPeter Tyser must also be configured. See I2C Support, below. 1107e92739d3SPeter Tyser 1108c609719bSwdenk- Timestamp Support: 1109c609719bSwdenk 1110c609719bSwdenk When CONFIG_TIMESTAMP is selected, the timestamp 1111c609719bSwdenk (date and time) of an image is printed by image 1112c609719bSwdenk commands like bootm or iminfo. This option is 1113602ad3b3SJon Loeliger automatically enabled when you select CONFIG_CMD_DATE . 1114c609719bSwdenk 1115923c46f9SKarl O. Pinc- Partition Labels (disklabels) Supported: 1116923c46f9SKarl O. Pinc Zero or more of the following: 1117923c46f9SKarl O. Pinc CONFIG_MAC_PARTITION Apple's MacOS partition table. 1118923c46f9SKarl O. Pinc CONFIG_DOS_PARTITION MS Dos partition table, traditional on the 1119923c46f9SKarl O. Pinc Intel architecture, USB sticks, etc. 1120923c46f9SKarl O. Pinc CONFIG_ISO_PARTITION ISO partition table, used on CDROM etc. 1121923c46f9SKarl O. Pinc CONFIG_EFI_PARTITION GPT partition table, common when EFI is the 1122923c46f9SKarl O. Pinc bootloader. Note 2TB partition limit; see 1123923c46f9SKarl O. Pinc disk/part_efi.c 1124923c46f9SKarl O. Pinc CONFIG_MTD_PARTITIONS Memory Technology Device partition table. 1125c609719bSwdenk 1126602ad3b3SJon Loeliger If IDE or SCSI support is enabled (CONFIG_CMD_IDE or 1127218ca724SWolfgang Denk CONFIG_CMD_SCSI) you must configure support for at 1128923c46f9SKarl O. Pinc least one non-MTD partition type as well. 1129c609719bSwdenk 1130c609719bSwdenk- IDE Reset method: 11314d13cbadSwdenk CONFIG_IDE_RESET_ROUTINE - this is defined in several 11324d13cbadSwdenk board configurations files but used nowhere! 1133c609719bSwdenk 11344d13cbadSwdenk CONFIG_IDE_RESET - is this is defined, IDE Reset will 11354d13cbadSwdenk be performed by calling the function 11364d13cbadSwdenk ide_set_reset(int reset) 11374d13cbadSwdenk which has to be defined in a board specific file 1138c609719bSwdenk 1139c609719bSwdenk- ATAPI Support: 1140c609719bSwdenk CONFIG_ATAPI 1141c609719bSwdenk 1142c609719bSwdenk Set this to enable ATAPI support. 1143c609719bSwdenk 1144c40b2956Swdenk- LBA48 Support 1145c40b2956Swdenk CONFIG_LBA48 1146c40b2956Swdenk 1147c40b2956Swdenk Set this to enable support for disks larger than 137GB 11484b142febSHeiko Schocher Also look at CONFIG_SYS_64BIT_LBA. 1149c40b2956Swdenk Whithout these , LBA48 support uses 32bit variables and will 'only' 1150c40b2956Swdenk support disks up to 2.1TB. 1151c40b2956Swdenk 11526d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_64BIT_LBA: 1153c40b2956Swdenk When enabled, makes the IDE subsystem use 64bit sector addresses. 1154c40b2956Swdenk Default is 32bit. 1155c40b2956Swdenk 1156c609719bSwdenk- SCSI Support: 1157c609719bSwdenk At the moment only there is only support for the 1158c609719bSwdenk SYM53C8XX SCSI controller; define 1159c609719bSwdenk CONFIG_SCSI_SYM53C8XX to enable it. 1160c609719bSwdenk 11616d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_LUN [8], CONFIG_SYS_SCSI_MAX_SCSI_ID [7] and 11626d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_DEVICE [CONFIG_SYS_SCSI_MAX_SCSI_ID * 11636d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_LUN] can be adjusted to define the 1164c609719bSwdenk maximum numbers of LUNs, SCSI ID's and target 1165c609719bSwdenk devices. 11666d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_SYM53C8XX_CCF to fix clock timing (80Mhz) 1167c609719bSwdenk 1168447c031bSStefan Reinauer The environment variable 'scsidevs' is set to the number of 1169447c031bSStefan Reinauer SCSI devices found during the last scan. 1170447c031bSStefan Reinauer 1171c609719bSwdenk- NETWORK Support (PCI): 1172682011ffSwdenk CONFIG_E1000 1173ce5207e1SKyle Moffett Support for Intel 8254x/8257x gigabit chips. 1174ce5207e1SKyle Moffett 1175ce5207e1SKyle Moffett CONFIG_E1000_SPI 1176ce5207e1SKyle Moffett Utility code for direct access to the SPI bus on Intel 8257x. 1177ce5207e1SKyle Moffett This does not do anything useful unless you set at least one 1178ce5207e1SKyle Moffett of CONFIG_CMD_E1000 or CONFIG_E1000_SPI_GENERIC. 1179ce5207e1SKyle Moffett 1180ce5207e1SKyle Moffett CONFIG_E1000_SPI_GENERIC 1181ce5207e1SKyle Moffett Allow generic access to the SPI bus on the Intel 8257x, for 1182ce5207e1SKyle Moffett example with the "sspi" command. 1183ce5207e1SKyle Moffett 1184ce5207e1SKyle Moffett CONFIG_CMD_E1000 1185ce5207e1SKyle Moffett Management command for E1000 devices. When used on devices 1186ce5207e1SKyle Moffett with SPI support you can reprogram the EEPROM from U-Boot. 1187682011ffSwdenk 1188ac3315c2SAndre Schwarz CONFIG_E1000_FALLBACK_MAC 118911ccc33fSMarcel Ziswiler default MAC for empty EEPROM after production. 1190ac3315c2SAndre Schwarz 1191c609719bSwdenk CONFIG_EEPRO100 1192c609719bSwdenk Support for Intel 82557/82559/82559ER chips. 119311ccc33fSMarcel Ziswiler Optional CONFIG_EEPRO100_SROM_WRITE enables EEPROM 1194c609719bSwdenk write routine for first time initialisation. 1195c609719bSwdenk 1196c609719bSwdenk CONFIG_TULIP 1197c609719bSwdenk Support for Digital 2114x chips. 1198c609719bSwdenk Optional CONFIG_TULIP_SELECT_MEDIA for board specific 1199c609719bSwdenk modem chip initialisation (KS8761/QS6611). 1200c609719bSwdenk 1201c609719bSwdenk CONFIG_NATSEMI 1202c609719bSwdenk Support for National dp83815 chips. 1203c609719bSwdenk 1204c609719bSwdenk CONFIG_NS8382X 1205c609719bSwdenk Support for National dp8382[01] gigabit chips. 1206c609719bSwdenk 120745219c46Swdenk- NETWORK Support (other): 120845219c46Swdenk 1209c041e9d2SJens Scharsig CONFIG_DRIVER_AT91EMAC 1210c041e9d2SJens Scharsig Support for AT91RM9200 EMAC. 1211c041e9d2SJens Scharsig 1212c041e9d2SJens Scharsig CONFIG_RMII 1213c041e9d2SJens Scharsig Define this to use reduced MII inteface 1214c041e9d2SJens Scharsig 1215c041e9d2SJens Scharsig CONFIG_DRIVER_AT91EMAC_QUIET 1216c041e9d2SJens Scharsig If this defined, the driver is quiet. 1217c041e9d2SJens Scharsig The driver doen't show link status messages. 1218c041e9d2SJens Scharsig 1219efdd7319SRob Herring CONFIG_CALXEDA_XGMAC 1220efdd7319SRob Herring Support for the Calxeda XGMAC device 1221efdd7319SRob Herring 12223bb46d23SAshok CONFIG_LAN91C96 122345219c46Swdenk Support for SMSC's LAN91C96 chips. 122445219c46Swdenk 122545219c46Swdenk CONFIG_LAN91C96_BASE 122645219c46Swdenk Define this to hold the physical address 122745219c46Swdenk of the LAN91C96's I/O space 122845219c46Swdenk 122945219c46Swdenk CONFIG_LAN91C96_USE_32_BIT 123045219c46Swdenk Define this to enable 32 bit addressing 123145219c46Swdenk 12323bb46d23SAshok CONFIG_SMC91111 1233f39748aeSwdenk Support for SMSC's LAN91C111 chip 1234f39748aeSwdenk 1235f39748aeSwdenk CONFIG_SMC91111_BASE 1236f39748aeSwdenk Define this to hold the physical address 1237f39748aeSwdenk of the device (I/O space) 1238f39748aeSwdenk 1239f39748aeSwdenk CONFIG_SMC_USE_32_BIT 1240f39748aeSwdenk Define this if data bus is 32 bits 1241f39748aeSwdenk 1242f39748aeSwdenk CONFIG_SMC_USE_IOFUNCS 1243f39748aeSwdenk Define this to use i/o functions instead of macros 1244f39748aeSwdenk (some hardware wont work with macros) 1245f39748aeSwdenk 1246dc02badaSHeiko Schocher CONFIG_DRIVER_TI_EMAC 1247dc02badaSHeiko Schocher Support for davinci emac 1248dc02badaSHeiko Schocher 1249dc02badaSHeiko Schocher CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT 1250dc02badaSHeiko Schocher Define this if you have more then 3 PHYs. 1251dc02badaSHeiko Schocher 1252b3dbf4a5SMacpaul Lin CONFIG_FTGMAC100 1253b3dbf4a5SMacpaul Lin Support for Faraday's FTGMAC100 Gigabit SoC Ethernet 1254b3dbf4a5SMacpaul Lin 1255b3dbf4a5SMacpaul Lin CONFIG_FTGMAC100_EGIGA 1256b3dbf4a5SMacpaul Lin Define this to use GE link update with gigabit PHY. 1257b3dbf4a5SMacpaul Lin Define this if FTGMAC100 is connected to gigabit PHY. 1258b3dbf4a5SMacpaul Lin If your system has 10/100 PHY only, it might not occur 1259b3dbf4a5SMacpaul Lin wrong behavior. Because PHY usually return timeout or 1260b3dbf4a5SMacpaul Lin useless data when polling gigabit status and gigabit 1261b3dbf4a5SMacpaul Lin control registers. This behavior won't affect the 1262b3dbf4a5SMacpaul Lin correctnessof 10/100 link speed update. 1263b3dbf4a5SMacpaul Lin 1264c2fff331SMike Rapoport CONFIG_SMC911X 1265557b377dSJens Gehrlein Support for SMSC's LAN911x and LAN921x chips 1266557b377dSJens Gehrlein 1267c2fff331SMike Rapoport CONFIG_SMC911X_BASE 1268557b377dSJens Gehrlein Define this to hold the physical address 1269557b377dSJens Gehrlein of the device (I/O space) 1270557b377dSJens Gehrlein 1271c2fff331SMike Rapoport CONFIG_SMC911X_32_BIT 1272557b377dSJens Gehrlein Define this if data bus is 32 bits 1273557b377dSJens Gehrlein 1274c2fff331SMike Rapoport CONFIG_SMC911X_16_BIT 1275557b377dSJens Gehrlein Define this if data bus is 16 bits. If your processor 1276557b377dSJens Gehrlein automatically converts one 32 bit word to two 16 bit 1277c2fff331SMike Rapoport words you may also try CONFIG_SMC911X_32_BIT. 1278557b377dSJens Gehrlein 12793d0075faSYoshihiro Shimoda CONFIG_SH_ETHER 12803d0075faSYoshihiro Shimoda Support for Renesas on-chip Ethernet controller 12813d0075faSYoshihiro Shimoda 12823d0075faSYoshihiro Shimoda CONFIG_SH_ETHER_USE_PORT 12833d0075faSYoshihiro Shimoda Define the number of ports to be used 12843d0075faSYoshihiro Shimoda 12853d0075faSYoshihiro Shimoda CONFIG_SH_ETHER_PHY_ADDR 12863d0075faSYoshihiro Shimoda Define the ETH PHY's address 12873d0075faSYoshihiro Shimoda 128868260aabSYoshihiro Shimoda CONFIG_SH_ETHER_CACHE_WRITEBACK 128968260aabSYoshihiro Shimoda If this option is set, the driver enables cache flush. 129068260aabSYoshihiro Shimoda 12915e124724SVadim Bendebury- TPM Support: 129290899cc0SChe-liang Chiou CONFIG_TPM 129390899cc0SChe-liang Chiou Support TPM devices. 129490899cc0SChe-liang Chiou 12951b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C 12961b393db5STom Wai-Hong Tam Support for i2c bus TPM devices. Only one device 12971b393db5STom Wai-Hong Tam per system is supported at this time. 12981b393db5STom Wai-Hong Tam 12991b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_BUS_NUMBER 13001b393db5STom Wai-Hong Tam Define the the i2c bus number for the TPM device 13011b393db5STom Wai-Hong Tam 13021b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_SLAVE_ADDRESS 13031b393db5STom Wai-Hong Tam Define the TPM's address on the i2c bus 13041b393db5STom Wai-Hong Tam 13051b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_BURST_LIMITATION 13061b393db5STom Wai-Hong Tam Define the burst count bytes upper limit 13071b393db5STom Wai-Hong Tam 1308c01939c7SDirk Eibach CONFIG_TPM_ATMEL_TWI 1309c01939c7SDirk Eibach Support for Atmel TWI TPM device. Requires I2C support. 1310c01939c7SDirk Eibach 131190899cc0SChe-liang Chiou CONFIG_TPM_TIS_LPC 13125e124724SVadim Bendebury Support for generic parallel port TPM devices. Only one device 13135e124724SVadim Bendebury per system is supported at this time. 13145e124724SVadim Bendebury 13155e124724SVadim Bendebury CONFIG_TPM_TIS_BASE_ADDRESS 13165e124724SVadim Bendebury Base address where the generic TPM device is mapped 13175e124724SVadim Bendebury to. Contemporary x86 systems usually map it at 13185e124724SVadim Bendebury 0xfed40000. 13195e124724SVadim Bendebury 1320be6c1529SReinhard Pfau CONFIG_CMD_TPM 1321be6c1529SReinhard Pfau Add tpm monitor functions. 1322be6c1529SReinhard Pfau Requires CONFIG_TPM. If CONFIG_TPM_AUTH_SESSIONS is set, also 1323be6c1529SReinhard Pfau provides monitor access to authorized functions. 1324be6c1529SReinhard Pfau 1325be6c1529SReinhard Pfau CONFIG_TPM 1326be6c1529SReinhard Pfau Define this to enable the TPM support library which provides 1327be6c1529SReinhard Pfau functional interfaces to some TPM commands. 1328be6c1529SReinhard Pfau Requires support for a TPM device. 1329be6c1529SReinhard Pfau 1330be6c1529SReinhard Pfau CONFIG_TPM_AUTH_SESSIONS 1331be6c1529SReinhard Pfau Define this to enable authorized functions in the TPM library. 1332be6c1529SReinhard Pfau Requires CONFIG_TPM and CONFIG_SHA1. 1333be6c1529SReinhard Pfau 1334c609719bSwdenk- USB Support: 1335c609719bSwdenk At the moment only the UHCI host controller is 13364d13cbadSwdenk supported (PIP405, MIP405, MPC5200); define 1337c609719bSwdenk CONFIG_USB_UHCI to enable it. 1338c609719bSwdenk define CONFIG_USB_KEYBOARD to enable the USB Keyboard 133930d56faeSwdenk and define CONFIG_USB_STORAGE to enable the USB 1340c609719bSwdenk storage devices. 1341c609719bSwdenk Note: 1342c609719bSwdenk Supported are USB Keyboards and USB Floppy drives 1343c609719bSwdenk (TEAC FD-05PUB). 13444d13cbadSwdenk MPC5200 USB requires additional defines: 13454d13cbadSwdenk CONFIG_USB_CLOCK 13464d13cbadSwdenk for 528 MHz Clock: 0x0001bbbb 1347307ecb6dSEric Millbrandt CONFIG_PSC3_USB 1348307ecb6dSEric Millbrandt for USB on PSC3 13494d13cbadSwdenk CONFIG_USB_CONFIG 13504d13cbadSwdenk for differential drivers: 0x00001000 13514d13cbadSwdenk for single ended drivers: 0x00005000 1352307ecb6dSEric Millbrandt for differential drivers on PSC3: 0x00000100 1353307ecb6dSEric Millbrandt for single ended drivers on PSC3: 0x00004100 13546d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_EVENT_POLL 1355fdcfaa1bSZhang Wei May be defined to allow interrupt polling 1356fdcfaa1bSZhang Wei instead of using asynchronous interrupts 13574d13cbadSwdenk 13589ab4ce22SSimon Glass CONFIG_USB_EHCI_TXFIFO_THRESH enables setting of the 13599ab4ce22SSimon Glass txfilltuning field in the EHCI controller on reset. 13609ab4ce22SSimon Glass 1361aa155058SKuo-Jung Su CONFIG_USB_HUB_MIN_POWER_ON_DELAY defines the minimum 1362aa155058SKuo-Jung Su interval for usb hub power-on delay.(minimum 100msec) 1363aa155058SKuo-Jung Su 136416c8d5e7SWolfgang Denk- USB Device: 136516c8d5e7SWolfgang Denk Define the below if you wish to use the USB console. 136616c8d5e7SWolfgang Denk Once firmware is rebuilt from a serial console issue the 136716c8d5e7SWolfgang Denk command "setenv stdin usbtty; setenv stdout usbtty" and 136811ccc33fSMarcel Ziswiler attach your USB cable. The Unix command "dmesg" should print 136916c8d5e7SWolfgang Denk it has found a new device. The environment variable usbtty 137016c8d5e7SWolfgang Denk can be set to gserial or cdc_acm to enable your device to 137116c8d5e7SWolfgang Denk appear to a USB host as a Linux gserial device or a 137216c8d5e7SWolfgang Denk Common Device Class Abstract Control Model serial device. 137316c8d5e7SWolfgang Denk If you select usbtty = gserial you should be able to enumerate 137416c8d5e7SWolfgang Denk a Linux host by 137516c8d5e7SWolfgang Denk # modprobe usbserial vendor=0xVendorID product=0xProductID 137616c8d5e7SWolfgang Denk else if using cdc_acm, simply setting the environment 137716c8d5e7SWolfgang Denk variable usbtty to be cdc_acm should suffice. The following 137816c8d5e7SWolfgang Denk might be defined in YourBoardName.h 137916c8d5e7SWolfgang Denk 138016c8d5e7SWolfgang Denk CONFIG_USB_DEVICE 138116c8d5e7SWolfgang Denk Define this to build a UDC device 138216c8d5e7SWolfgang Denk 138316c8d5e7SWolfgang Denk CONFIG_USB_TTY 138416c8d5e7SWolfgang Denk Define this to have a tty type of device available to 138516c8d5e7SWolfgang Denk talk to the UDC device 138616c8d5e7SWolfgang Denk 1387f9da0f89SVipin KUMAR CONFIG_USBD_HS 1388f9da0f89SVipin KUMAR Define this to enable the high speed support for usb 1389f9da0f89SVipin KUMAR device and usbtty. If this feature is enabled, a routine 1390f9da0f89SVipin KUMAR int is_usbd_high_speed(void) 1391f9da0f89SVipin KUMAR also needs to be defined by the driver to dynamically poll 1392f9da0f89SVipin KUMAR whether the enumeration has succeded at high speed or full 1393f9da0f89SVipin KUMAR speed. 1394f9da0f89SVipin KUMAR 13956d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CONSOLE_IS_IN_ENV 139616c8d5e7SWolfgang Denk Define this if you want stdin, stdout &/or stderr to 139716c8d5e7SWolfgang Denk be set to usbtty. 139816c8d5e7SWolfgang Denk 139916c8d5e7SWolfgang Denk mpc8xx: 14006d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_EXTC_CLK 0xBLAH 140116c8d5e7SWolfgang Denk Derive USB clock from external clock "blah" 14026d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_USB_EXTC_CLK 0x02 140316c8d5e7SWolfgang Denk 14046d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_BRG_CLK 0xBLAH 140516c8d5e7SWolfgang Denk Derive USB clock from brgclk 14066d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_USB_BRG_CLK 0x04 140716c8d5e7SWolfgang Denk 140816c8d5e7SWolfgang Denk If you have a USB-IF assigned VendorID then you may wish to 140916c8d5e7SWolfgang Denk define your own vendor specific values either in BoardName.h 141016c8d5e7SWolfgang Denk or directly in usbd_vendor_info.h. If you don't define 141116c8d5e7SWolfgang Denk CONFIG_USBD_MANUFACTURER, CONFIG_USBD_PRODUCT_NAME, 141216c8d5e7SWolfgang Denk CONFIG_USBD_VENDORID and CONFIG_USBD_PRODUCTID, then U-Boot 141316c8d5e7SWolfgang Denk should pretend to be a Linux device to it's target host. 141416c8d5e7SWolfgang Denk 141516c8d5e7SWolfgang Denk CONFIG_USBD_MANUFACTURER 141616c8d5e7SWolfgang Denk Define this string as the name of your company for 141716c8d5e7SWolfgang Denk - CONFIG_USBD_MANUFACTURER "my company" 141816c8d5e7SWolfgang Denk 141916c8d5e7SWolfgang Denk CONFIG_USBD_PRODUCT_NAME 142016c8d5e7SWolfgang Denk Define this string as the name of your product 142116c8d5e7SWolfgang Denk - CONFIG_USBD_PRODUCT_NAME "acme usb device" 142216c8d5e7SWolfgang Denk 142316c8d5e7SWolfgang Denk CONFIG_USBD_VENDORID 142416c8d5e7SWolfgang Denk Define this as your assigned Vendor ID from the USB 142516c8d5e7SWolfgang Denk Implementors Forum. This *must* be a genuine Vendor ID 142616c8d5e7SWolfgang Denk to avoid polluting the USB namespace. 142716c8d5e7SWolfgang Denk - CONFIG_USBD_VENDORID 0xFFFF 142816c8d5e7SWolfgang Denk 142916c8d5e7SWolfgang Denk CONFIG_USBD_PRODUCTID 143016c8d5e7SWolfgang Denk Define this as the unique Product ID 143116c8d5e7SWolfgang Denk for your device 143216c8d5e7SWolfgang Denk - CONFIG_USBD_PRODUCTID 0xFFFF 1433c609719bSwdenk 1434351e9b20SPrzemyslaw Marczak Some USB device drivers may need to check USB cable attachment. 1435351e9b20SPrzemyslaw Marczak In this case you can enable following config in BoardName.h: 1436351e9b20SPrzemyslaw Marczak CONFIG_USB_CABLE_CHECK 1437351e9b20SPrzemyslaw Marczak This enables function definition: 1438351e9b20SPrzemyslaw Marczak - usb_cable_connected() in include/usb.h 1439351e9b20SPrzemyslaw Marczak Implementation of this function is board-specific. 1440351e9b20SPrzemyslaw Marczak 1441d70a560fSIgor Grinberg- ULPI Layer Support: 1442d70a560fSIgor Grinberg The ULPI (UTMI Low Pin (count) Interface) PHYs are supported via 1443d70a560fSIgor Grinberg the generic ULPI layer. The generic layer accesses the ULPI PHY 1444d70a560fSIgor Grinberg via the platform viewport, so you need both the genric layer and 1445d70a560fSIgor Grinberg the viewport enabled. Currently only Chipidea/ARC based 1446d70a560fSIgor Grinberg viewport is supported. 1447d70a560fSIgor Grinberg To enable the ULPI layer support, define CONFIG_USB_ULPI and 1448d70a560fSIgor Grinberg CONFIG_USB_ULPI_VIEWPORT in your board configuration file. 14496d365ea0SLucas Stach If your ULPI phy needs a different reference clock than the 14506d365ea0SLucas Stach standard 24 MHz then you have to define CONFIG_ULPI_REF_CLK to 14516d365ea0SLucas Stach the appropriate value in Hz. 1452c609719bSwdenk 1453c609719bSwdenk- MMC Support: 1454c609719bSwdenk The MMC controller on the Intel PXA is supported. To 1455c609719bSwdenk enable this define CONFIG_MMC. The MMC can be 1456c609719bSwdenk accessed from the boot prompt by mapping the device 1457c609719bSwdenk to physical memory similar to flash. Command line is 1458602ad3b3SJon Loeliger enabled with CONFIG_CMD_MMC. The MMC driver also works with 1459602ad3b3SJon Loeliger the FAT fs. This is enabled with CONFIG_CMD_FAT. 1460c609719bSwdenk 1461afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF 1462afb35666SYoshihiro Shimoda Support for Renesas on-chip MMCIF controller 1463afb35666SYoshihiro Shimoda 1464afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF_ADDR 1465afb35666SYoshihiro Shimoda Define the base address of MMCIF registers 1466afb35666SYoshihiro Shimoda 1467afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF_CLK 1468afb35666SYoshihiro Shimoda Define the clock frequency for MMCIF 1469afb35666SYoshihiro Shimoda 1470b3ba6e94STom Rini- USB Device Firmware Update (DFU) class support: 1471b3ba6e94STom Rini CONFIG_DFU_FUNCTION 1472b3ba6e94STom Rini This enables the USB portion of the DFU USB class 1473b3ba6e94STom Rini 1474b3ba6e94STom Rini CONFIG_CMD_DFU 1475b3ba6e94STom Rini This enables the command "dfu" which is used to have 1476b3ba6e94STom Rini U-Boot create a DFU class device via USB. This command 1477b3ba6e94STom Rini requires that the "dfu_alt_info" environment variable be 1478b3ba6e94STom Rini set and define the alt settings to expose to the host. 1479b3ba6e94STom Rini 1480b3ba6e94STom Rini CONFIG_DFU_MMC 1481b3ba6e94STom Rini This enables support for exposing (e)MMC devices via DFU. 1482b3ba6e94STom Rini 1483c6631764SPantelis Antoniou CONFIG_DFU_NAND 1484c6631764SPantelis Antoniou This enables support for exposing NAND devices via DFU. 1485c6631764SPantelis Antoniou 1486a9479f04SAfzal Mohammed CONFIG_DFU_RAM 1487a9479f04SAfzal Mohammed This enables support for exposing RAM via DFU. 1488a9479f04SAfzal Mohammed Note: DFU spec refer to non-volatile memory usage, but 1489a9479f04SAfzal Mohammed allow usages beyond the scope of spec - here RAM usage, 1490a9479f04SAfzal Mohammed one that would help mostly the developer. 1491a9479f04SAfzal Mohammed 1492e7e75c70SHeiko Schocher CONFIG_SYS_DFU_DATA_BUF_SIZE 1493e7e75c70SHeiko Schocher Dfu transfer uses a buffer before writing data to the 1494e7e75c70SHeiko Schocher raw storage device. Make the size (in bytes) of this buffer 1495e7e75c70SHeiko Schocher configurable. The size of this buffer is also configurable 1496e7e75c70SHeiko Schocher through the "dfu_bufsiz" environment variable. 1497e7e75c70SHeiko Schocher 1498ea2453d5SPantelis Antoniou CONFIG_SYS_DFU_MAX_FILE_SIZE 1499ea2453d5SPantelis Antoniou When updating files rather than the raw storage device, 1500ea2453d5SPantelis Antoniou we use a static buffer to copy the file into and then write 1501ea2453d5SPantelis Antoniou the buffer once we've been given the whole file. Define 1502ea2453d5SPantelis Antoniou this to the maximum filesize (in bytes) for the buffer. 1503ea2453d5SPantelis Antoniou Default is 4 MiB if undefined. 1504ea2453d5SPantelis Antoniou 15056705d81eSwdenk- Journaling Flash filesystem support: 15066705d81eSwdenk CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE, 15076705d81eSwdenk CONFIG_JFFS2_NAND_DEV 15086705d81eSwdenk Define these for a default partition on a NAND device 15096705d81eSwdenk 15106d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS2_FIRST_SECTOR, 15116d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS2_FIRST_BANK, CONFIG_SYS_JFFS2_NUM_BANKS 15126705d81eSwdenk Define these for a default partition on a NOR device 15136705d81eSwdenk 15146d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS_CUSTOM_PART 15156705d81eSwdenk Define this to create an own partition. You have to provide a 15166705d81eSwdenk function struct part_info* jffs2_part_info(int part_num) 15176705d81eSwdenk 15186705d81eSwdenk If you define only one JFFS2 partition you may also want to 15196d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_JFFS_SINGLE_PART 1 15206705d81eSwdenk to disable the command chpart. This is the default when you 15216705d81eSwdenk have not defined a custom partition 15226705d81eSwdenk 1523c30a15e5SDonggeun Kim- FAT(File Allocation Table) filesystem write function support: 1524c30a15e5SDonggeun Kim CONFIG_FAT_WRITE 1525656f4c65SDonggeun Kim 1526656f4c65SDonggeun Kim Define this to enable support for saving memory data as a 1527656f4c65SDonggeun Kim file in FAT formatted partition. 1528656f4c65SDonggeun Kim 1529656f4c65SDonggeun Kim This will also enable the command "fatwrite" enabling the 1530656f4c65SDonggeun Kim user to write files to FAT. 1531c30a15e5SDonggeun Kim 153284cd9327SGabe BlackCBFS (Coreboot Filesystem) support 153384cd9327SGabe Black CONFIG_CMD_CBFS 153484cd9327SGabe Black 153584cd9327SGabe Black Define this to enable support for reading from a Coreboot 153684cd9327SGabe Black filesystem. Available commands are cbfsinit, cbfsinfo, cbfsls 153784cd9327SGabe Black and cbfsload. 153884cd9327SGabe Black 1539c609719bSwdenk- Keyboard Support: 1540c609719bSwdenk CONFIG_ISA_KEYBOARD 1541c609719bSwdenk 1542c609719bSwdenk Define this to enable standard (PC-Style) keyboard 1543c609719bSwdenk support 1544c609719bSwdenk 1545c609719bSwdenk CONFIG_I8042_KBD 1546c609719bSwdenk Standard PC keyboard driver with US (is default) and 1547c609719bSwdenk GERMAN key layout (switch via environment 'keymap=de') support. 1548c609719bSwdenk Export function i8042_kbd_init, i8042_tstc and i8042_getc 1549c609719bSwdenk for cfb_console. Supports cursor blinking. 1550c609719bSwdenk 1551713cb680SHung-ying Tyan CONFIG_CROS_EC_KEYB 1552713cb680SHung-ying Tyan Enables a Chrome OS keyboard using the CROS_EC interface. 1553713cb680SHung-ying Tyan This uses CROS_EC to communicate with a second microcontroller 1554713cb680SHung-ying Tyan which provides key scans on request. 1555713cb680SHung-ying Tyan 1556c609719bSwdenk- Video support: 1557c609719bSwdenk CONFIG_VIDEO 1558c609719bSwdenk 1559c609719bSwdenk Define this to enable video support (for output to 1560c609719bSwdenk video). 1561c609719bSwdenk 1562c609719bSwdenk CONFIG_VIDEO_CT69000 1563c609719bSwdenk 1564c609719bSwdenk Enable Chips & Technologies 69000 Video chip 1565c609719bSwdenk 1566c609719bSwdenk CONFIG_VIDEO_SMI_LYNXEM 1567eeb1b77bSwdenk Enable Silicon Motion SMI 712/710/810 Video chip. The 1568eeb1b77bSwdenk video output is selected via environment 'videoout' 1569eeb1b77bSwdenk (1 = LCD and 2 = CRT). If videoout is undefined, CRT is 1570eeb1b77bSwdenk assumed. 1571c609719bSwdenk 1572eeb1b77bSwdenk For the CT69000 and SMI_LYNXEM drivers, videomode is 157311ccc33fSMarcel Ziswiler selected via environment 'videomode'. Two different ways 1574eeb1b77bSwdenk are possible: 1575eeb1b77bSwdenk - "videomode=num" 'num' is a standard LiLo mode numbers. 1576eeb1b77bSwdenk Following standard modes are supported (* is default): 1577eeb1b77bSwdenk 1578eeb1b77bSwdenk Colors 640x480 800x600 1024x768 1152x864 1280x1024 1579eeb1b77bSwdenk -------------+--------------------------------------------- 1580eeb1b77bSwdenk 8 bits | 0x301* 0x303 0x305 0x161 0x307 1581eeb1b77bSwdenk 15 bits | 0x310 0x313 0x316 0x162 0x319 1582eeb1b77bSwdenk 16 bits | 0x311 0x314 0x317 0x163 0x31A 1583eeb1b77bSwdenk 24 bits | 0x312 0x315 0x318 ? 0x31B 1584eeb1b77bSwdenk -------------+--------------------------------------------- 1585c609719bSwdenk (i.e. setenv videomode 317; saveenv; reset;) 1586c609719bSwdenk 1587eeb1b77bSwdenk - "videomode=bootargs" all the video parameters are parsed 15887817cb20SMarcel Ziswiler from the bootargs. (See drivers/video/videomodes.c) 1589eeb1b77bSwdenk 1590eeb1b77bSwdenk 1591a6c7ad2fSwdenk CONFIG_VIDEO_SED13806 1592a6c7ad2fSwdenk Enable Epson SED13806 driver. This driver supports 8bpp 1593a6c7ad2fSwdenk and 16bpp modes defined by CONFIG_VIDEO_SED13806_8BPP 1594a6c7ad2fSwdenk or CONFIG_VIDEO_SED13806_16BPP 1595a6c7ad2fSwdenk 15967d3053fbSTimur Tabi CONFIG_FSL_DIU_FB 15977d3053fbSTimur Tabi Enable the Freescale DIU video driver. Reference boards for 15987d3053fbSTimur Tabi SOCs that have a DIU should define this macro to enable DIU 15997d3053fbSTimur Tabi support, and should also define these other macros: 16007d3053fbSTimur Tabi 16017d3053fbSTimur Tabi CONFIG_SYS_DIU_ADDR 16027d3053fbSTimur Tabi CONFIG_VIDEO 16037d3053fbSTimur Tabi CONFIG_CMD_BMP 16047d3053fbSTimur Tabi CONFIG_CFB_CONSOLE 16057d3053fbSTimur Tabi CONFIG_VIDEO_SW_CURSOR 16067d3053fbSTimur Tabi CONFIG_VGA_AS_SINGLE_DEVICE 16077d3053fbSTimur Tabi CONFIG_VIDEO_LOGO 16087d3053fbSTimur Tabi CONFIG_VIDEO_BMP_LOGO 16097d3053fbSTimur Tabi 1610ba8e76bdSTimur Tabi The DIU driver will look for the 'video-mode' environment 1611ba8e76bdSTimur Tabi variable, and if defined, enable the DIU as a console during 1612ba8e76bdSTimur Tabi boot. See the documentation file README.video for a 1613ba8e76bdSTimur Tabi description of this variable. 16147d3053fbSTimur Tabi 1615058d59b0SSimon Glass CONFIG_VIDEO_VGA 1616058d59b0SSimon Glass 1617058d59b0SSimon Glass Enable the VGA video / BIOS for x86. The alternative if you 1618058d59b0SSimon Glass are using coreboot is to use the coreboot frame buffer 1619058d59b0SSimon Glass driver. 1620058d59b0SSimon Glass 1621058d59b0SSimon Glass 1622682011ffSwdenk- Keyboard Support: 1623682011ffSwdenk CONFIG_KEYBOARD 1624682011ffSwdenk 1625682011ffSwdenk Define this to enable a custom keyboard support. 1626682011ffSwdenk This simply calls drv_keyboard_init() which must be 1627682011ffSwdenk defined in your board-specific files. 1628682011ffSwdenk The only board using this so far is RBC823. 1629a6c7ad2fSwdenk 1630c609719bSwdenk- LCD Support: CONFIG_LCD 1631c609719bSwdenk 1632c609719bSwdenk Define this to enable LCD support (for output to LCD 1633c609719bSwdenk display); also select one of the supported displays 1634c609719bSwdenk by defining one of these: 1635c609719bSwdenk 163639cf4804SStelian Pop CONFIG_ATMEL_LCD: 163739cf4804SStelian Pop 163839cf4804SStelian Pop HITACHI TX09D70VM1CCA, 3.5", 240x320. 163939cf4804SStelian Pop 1640fd3103bbSwdenk CONFIG_NEC_NL6448AC33: 1641c609719bSwdenk 1642fd3103bbSwdenk NEC NL6448AC33-18. Active, color, single scan. 1643c609719bSwdenk 1644fd3103bbSwdenk CONFIG_NEC_NL6448BC20 1645c609719bSwdenk 1646fd3103bbSwdenk NEC NL6448BC20-08. 6.5", 640x480. 1647fd3103bbSwdenk Active, color, single scan. 1648fd3103bbSwdenk 1649fd3103bbSwdenk CONFIG_NEC_NL6448BC33_54 1650fd3103bbSwdenk 1651fd3103bbSwdenk NEC NL6448BC33-54. 10.4", 640x480. 1652c609719bSwdenk Active, color, single scan. 1653c609719bSwdenk 1654c609719bSwdenk CONFIG_SHARP_16x9 1655c609719bSwdenk 1656c609719bSwdenk Sharp 320x240. Active, color, single scan. 1657c609719bSwdenk It isn't 16x9, and I am not sure what it is. 1658c609719bSwdenk 1659c609719bSwdenk CONFIG_SHARP_LQ64D341 1660c609719bSwdenk 1661c609719bSwdenk Sharp LQ64D341 display, 640x480. 1662c609719bSwdenk Active, color, single scan. 1663c609719bSwdenk 1664c609719bSwdenk CONFIG_HLD1045 1665c609719bSwdenk 1666c609719bSwdenk HLD1045 display, 640x480. 1667c609719bSwdenk Active, color, single scan. 1668c609719bSwdenk 1669c609719bSwdenk CONFIG_OPTREX_BW 1670c609719bSwdenk 1671c609719bSwdenk Optrex CBL50840-2 NF-FW 99 22 M5 1672c609719bSwdenk or 1673c609719bSwdenk Hitachi LMG6912RPFC-00T 1674c609719bSwdenk or 1675c609719bSwdenk Hitachi SP14Q002 1676c609719bSwdenk 1677c609719bSwdenk 320x240. Black & white. 1678c609719bSwdenk 1679c609719bSwdenk Normally display is black on white background; define 16806d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_WHITE_ON_BLACK to get it inverted. 1681c609719bSwdenk 1682676d319eSSimon Glass CONFIG_LCD_ALIGNMENT 1683676d319eSSimon Glass 1684676d319eSSimon Glass Normally the LCD is page-aligned (tyically 4KB). If this is 1685676d319eSSimon Glass defined then the LCD will be aligned to this value instead. 1686676d319eSSimon Glass For ARM it is sometimes useful to use MMU_SECTION_SIZE 1687676d319eSSimon Glass here, since it is cheaper to change data cache settings on 1688676d319eSSimon Glass a per-section basis. 1689676d319eSSimon Glass 16900d89efefSSimon Glass CONFIG_CONSOLE_SCROLL_LINES 16910d89efefSSimon Glass 16920d89efefSSimon Glass When the console need to be scrolled, this is the number of 16930d89efefSSimon Glass lines to scroll by. It defaults to 1. Increasing this makes 16940d89efefSSimon Glass the console jump but can help speed up operation when scrolling 16950d89efefSSimon Glass is slow. 1696676d319eSSimon Glass 169745d7f525STom Wai-Hong Tam CONFIG_LCD_BMP_RLE8 169845d7f525STom Wai-Hong Tam 169945d7f525STom Wai-Hong Tam Support drawing of RLE8-compressed bitmaps on the LCD. 170045d7f525STom Wai-Hong Tam 1701735987c5STom Wai-Hong Tam CONFIG_I2C_EDID 1702735987c5STom Wai-Hong Tam 1703735987c5STom Wai-Hong Tam Enables an 'i2c edid' command which can read EDID 1704735987c5STom Wai-Hong Tam information over I2C from an attached LCD display. 1705735987c5STom Wai-Hong Tam 17067152b1d0Swdenk- Splash Screen Support: CONFIG_SPLASH_SCREEN 1707d791b1dcSwdenk 1708d791b1dcSwdenk If this option is set, the environment is checked for 1709d791b1dcSwdenk a variable "splashimage". If found, the usual display 1710d791b1dcSwdenk of logo, copyright and system information on the LCD 1711e94d2cd9Swdenk is suppressed and the BMP image at the address 1712d791b1dcSwdenk specified in "splashimage" is loaded instead. The 1713d791b1dcSwdenk console is redirected to the "nulldev", too. This 1714d791b1dcSwdenk allows for a "silent" boot where a splash screen is 1715d791b1dcSwdenk loaded very quickly after power-on. 1716d791b1dcSwdenk 1717c0880485SNikita Kiryanov CONFIG_SPLASHIMAGE_GUARD 1718c0880485SNikita Kiryanov 1719c0880485SNikita Kiryanov If this option is set, then U-Boot will prevent the environment 1720c0880485SNikita Kiryanov variable "splashimage" from being set to a problematic address 1721c0880485SNikita Kiryanov (see README.displaying-bmps and README.arm-unaligned-accesses). 1722c0880485SNikita Kiryanov This option is useful for targets where, due to alignment 1723c0880485SNikita Kiryanov restrictions, an improperly aligned BMP image will cause a data 1724c0880485SNikita Kiryanov abort. If you think you will not have problems with unaligned 1725c0880485SNikita Kiryanov accesses (for example because your toolchain prevents them) 1726c0880485SNikita Kiryanov there is no need to set this option. 1727c0880485SNikita Kiryanov 17281ca298ceSMatthias Weisser CONFIG_SPLASH_SCREEN_ALIGN 17291ca298ceSMatthias Weisser 17301ca298ceSMatthias Weisser If this option is set the splash image can be freely positioned 17311ca298ceSMatthias Weisser on the screen. Environment variable "splashpos" specifies the 17321ca298ceSMatthias Weisser position as "x,y". If a positive number is given it is used as 17331ca298ceSMatthias Weisser number of pixel from left/top. If a negative number is given it 17341ca298ceSMatthias Weisser is used as number of pixel from right/bottom. You can also 17351ca298ceSMatthias Weisser specify 'm' for centering the image. 17361ca298ceSMatthias Weisser 17371ca298ceSMatthias Weisser Example: 17381ca298ceSMatthias Weisser setenv splashpos m,m 17391ca298ceSMatthias Weisser => image at center of screen 17401ca298ceSMatthias Weisser 17411ca298ceSMatthias Weisser setenv splashpos 30,20 17421ca298ceSMatthias Weisser => image at x = 30 and y = 20 17431ca298ceSMatthias Weisser 17441ca298ceSMatthias Weisser setenv splashpos -10,m 17451ca298ceSMatthias Weisser => vertically centered image 17461ca298ceSMatthias Weisser at x = dspWidth - bmpWidth - 9 17471ca298ceSMatthias Weisser 174898f4a3dfSStefan Roese- Gzip compressed BMP image support: CONFIG_VIDEO_BMP_GZIP 174998f4a3dfSStefan Roese 175098f4a3dfSStefan Roese If this option is set, additionally to standard BMP 175198f4a3dfSStefan Roese images, gzipped BMP images can be displayed via the 175298f4a3dfSStefan Roese splashscreen support or the bmp command. 175398f4a3dfSStefan Roese 1754d5011762SAnatolij Gustschin- Run length encoded BMP image (RLE8) support: CONFIG_VIDEO_BMP_RLE8 1755d5011762SAnatolij Gustschin 1756d5011762SAnatolij Gustschin If this option is set, 8-bit RLE compressed BMP images 1757d5011762SAnatolij Gustschin can be displayed via the splashscreen support or the 1758d5011762SAnatolij Gustschin bmp command. 1759d5011762SAnatolij Gustschin 1760f2b96dfbSLei Wen- Do compresssing for memory range: 1761f2b96dfbSLei Wen CONFIG_CMD_ZIP 1762f2b96dfbSLei Wen 1763f2b96dfbSLei Wen If this option is set, it would use zlib deflate method 1764f2b96dfbSLei Wen to compress the specified memory at its best effort. 1765f2b96dfbSLei Wen 1766c29fdfc1Swdenk- Compression support: 17678ef70478SKees Cook CONFIG_GZIP 17688ef70478SKees Cook 17698ef70478SKees Cook Enabled by default to support gzip compressed images. 17708ef70478SKees Cook 1771c29fdfc1Swdenk CONFIG_BZIP2 1772c29fdfc1Swdenk 1773c29fdfc1Swdenk If this option is set, support for bzip2 compressed 1774c29fdfc1Swdenk images is included. If not, only uncompressed and gzip 1775c29fdfc1Swdenk compressed images are supported. 1776c29fdfc1Swdenk 1777c29fdfc1Swdenk NOTE: the bzip2 algorithm requires a lot of RAM, so 17786d0f6bcfSJean-Christophe PLAGNIOL-VILLARD the malloc area (as defined by CONFIG_SYS_MALLOC_LEN) should 1779c29fdfc1Swdenk be at least 4MB. 1780d791b1dcSwdenk 1781fc9c1727SLuigi 'Comio' Mantellini CONFIG_LZMA 1782fc9c1727SLuigi 'Comio' Mantellini 1783fc9c1727SLuigi 'Comio' Mantellini If this option is set, support for lzma compressed 1784fc9c1727SLuigi 'Comio' Mantellini images is included. 1785fc9c1727SLuigi 'Comio' Mantellini 1786fc9c1727SLuigi 'Comio' Mantellini Note: The LZMA algorithm adds between 2 and 4KB of code and it 1787fc9c1727SLuigi 'Comio' Mantellini requires an amount of dynamic memory that is given by the 1788fc9c1727SLuigi 'Comio' Mantellini formula: 1789fc9c1727SLuigi 'Comio' Mantellini 1790fc9c1727SLuigi 'Comio' Mantellini (1846 + 768 << (lc + lp)) * sizeof(uint16) 1791fc9c1727SLuigi 'Comio' Mantellini 1792fc9c1727SLuigi 'Comio' Mantellini Where lc and lp stand for, respectively, Literal context bits 1793fc9c1727SLuigi 'Comio' Mantellini and Literal pos bits. 1794fc9c1727SLuigi 'Comio' Mantellini 1795fc9c1727SLuigi 'Comio' Mantellini This value is upper-bounded by 14MB in the worst case. Anyway, 1796fc9c1727SLuigi 'Comio' Mantellini for a ~4MB large kernel image, we have lc=3 and lp=0 for a 1797fc9c1727SLuigi 'Comio' Mantellini total amount of (1846 + 768 << (3 + 0)) * 2 = ~41KB... that is 1798fc9c1727SLuigi 'Comio' Mantellini a very small buffer. 1799fc9c1727SLuigi 'Comio' Mantellini 1800fc9c1727SLuigi 'Comio' Mantellini Use the lzmainfo tool to determinate the lc and lp values and 1801fc9c1727SLuigi 'Comio' Mantellini then calculate the amount of needed dynamic memory (ensuring 18026d0f6bcfSJean-Christophe PLAGNIOL-VILLARD the appropriate CONFIG_SYS_MALLOC_LEN value). 1803fc9c1727SLuigi 'Comio' Mantellini 18048ef70478SKees Cook CONFIG_LZO 18058ef70478SKees Cook 18068ef70478SKees Cook If this option is set, support for LZO compressed images 18078ef70478SKees Cook is included. 18088ef70478SKees Cook 180917ea1177Swdenk- MII/PHY support: 181017ea1177Swdenk CONFIG_PHY_ADDR 181117ea1177Swdenk 181217ea1177Swdenk The address of PHY on MII bus. 181317ea1177Swdenk 181417ea1177Swdenk CONFIG_PHY_CLOCK_FREQ (ppc4xx) 181517ea1177Swdenk 181617ea1177Swdenk The clock frequency of the MII bus 181717ea1177Swdenk 181817ea1177Swdenk CONFIG_PHY_GIGE 181917ea1177Swdenk 182017ea1177Swdenk If this option is set, support for speed/duplex 182111ccc33fSMarcel Ziswiler detection of gigabit PHY is included. 182217ea1177Swdenk 182317ea1177Swdenk CONFIG_PHY_RESET_DELAY 182417ea1177Swdenk 182517ea1177Swdenk Some PHY like Intel LXT971A need extra delay after 182617ea1177Swdenk reset before any MII register access is possible. 182717ea1177Swdenk For such PHY, set this option to the usec delay 182817ea1177Swdenk required. (minimum 300usec for LXT971A) 182917ea1177Swdenk 183017ea1177Swdenk CONFIG_PHY_CMD_DELAY (ppc4xx) 183117ea1177Swdenk 183217ea1177Swdenk Some PHY like Intel LXT971A need extra delay after 183317ea1177Swdenk command issued before MII status register can be read 183417ea1177Swdenk 1835c609719bSwdenk- Ethernet address: 1836c609719bSwdenk CONFIG_ETHADDR 1837c68a05feSrichardretanubun CONFIG_ETH1ADDR 1838c609719bSwdenk CONFIG_ETH2ADDR 1839c609719bSwdenk CONFIG_ETH3ADDR 1840c68a05feSrichardretanubun CONFIG_ETH4ADDR 1841c68a05feSrichardretanubun CONFIG_ETH5ADDR 1842c609719bSwdenk 184311ccc33fSMarcel Ziswiler Define a default value for Ethernet address to use 184411ccc33fSMarcel Ziswiler for the respective Ethernet interface, in case this 1845c609719bSwdenk is not determined automatically. 1846c609719bSwdenk 1847c609719bSwdenk- IP address: 1848c609719bSwdenk CONFIG_IPADDR 1849c609719bSwdenk 1850c609719bSwdenk Define a default value for the IP address to use for 185111ccc33fSMarcel Ziswiler the default Ethernet interface, in case this is not 1852c609719bSwdenk determined through e.g. bootp. 18531ebcd654SWolfgang Denk (Environment variable "ipaddr") 1854c609719bSwdenk 1855c609719bSwdenk- Server IP address: 1856c609719bSwdenk CONFIG_SERVERIP 1857c609719bSwdenk 1858c609719bSwdenk Defines a default value for the IP address of a TFTP 1859c609719bSwdenk server to contact when using the "tftboot" command. 18601ebcd654SWolfgang Denk (Environment variable "serverip") 1861c609719bSwdenk 186297cfe861SRobin Getz CONFIG_KEEP_SERVERADDR 186397cfe861SRobin Getz 186497cfe861SRobin Getz Keeps the server's MAC address, in the env 'serveraddr' 186597cfe861SRobin Getz for passing to bootargs (like Linux's netconsole option) 186697cfe861SRobin Getz 18671ebcd654SWolfgang Denk- Gateway IP address: 18681ebcd654SWolfgang Denk CONFIG_GATEWAYIP 18691ebcd654SWolfgang Denk 18701ebcd654SWolfgang Denk Defines a default value for the IP address of the 18711ebcd654SWolfgang Denk default router where packets to other networks are 18721ebcd654SWolfgang Denk sent to. 18731ebcd654SWolfgang Denk (Environment variable "gatewayip") 18741ebcd654SWolfgang Denk 18751ebcd654SWolfgang Denk- Subnet mask: 18761ebcd654SWolfgang Denk CONFIG_NETMASK 18771ebcd654SWolfgang Denk 18781ebcd654SWolfgang Denk Defines a default value for the subnet mask (or 18791ebcd654SWolfgang Denk routing prefix) which is used to determine if an IP 18801ebcd654SWolfgang Denk address belongs to the local subnet or needs to be 18811ebcd654SWolfgang Denk forwarded through a router. 18821ebcd654SWolfgang Denk (Environment variable "netmask") 18831ebcd654SWolfgang Denk 188453a5c424SDavid Updegraff- Multicast TFTP Mode: 188553a5c424SDavid Updegraff CONFIG_MCAST_TFTP 188653a5c424SDavid Updegraff 188753a5c424SDavid Updegraff Defines whether you want to support multicast TFTP as per 188853a5c424SDavid Updegraff rfc-2090; for example to work with atftp. Lets lots of targets 188911ccc33fSMarcel Ziswiler tftp down the same boot image concurrently. Note: the Ethernet 189053a5c424SDavid Updegraff driver in use must provide a function: mcast() to join/leave a 189153a5c424SDavid Updegraff multicast group. 189253a5c424SDavid Updegraff 1893c609719bSwdenk- BOOTP Recovery Mode: 1894c609719bSwdenk CONFIG_BOOTP_RANDOM_DELAY 1895c609719bSwdenk 1896c609719bSwdenk If you have many targets in a network that try to 1897c609719bSwdenk boot using BOOTP, you may want to avoid that all 1898c609719bSwdenk systems send out BOOTP requests at precisely the same 1899c609719bSwdenk moment (which would happen for instance at recovery 1900c609719bSwdenk from a power failure, when all systems will try to 1901c609719bSwdenk boot, thus flooding the BOOTP server. Defining 1902c609719bSwdenk CONFIG_BOOTP_RANDOM_DELAY causes a random delay to be 1903c609719bSwdenk inserted before sending out BOOTP requests. The 19046c33c785SWolfgang Denk following delays are inserted then: 1905c609719bSwdenk 1906c609719bSwdenk 1st BOOTP request: delay 0 ... 1 sec 1907c609719bSwdenk 2nd BOOTP request: delay 0 ... 2 sec 1908c609719bSwdenk 3rd BOOTP request: delay 0 ... 4 sec 1909c609719bSwdenk 4th and following 1910c609719bSwdenk BOOTP requests: delay 0 ... 8 sec 1911c609719bSwdenk 1912fe389a82Sstroese- DHCP Advanced Options: 19131fe80d79SJon Loeliger You can fine tune the DHCP functionality by defining 19141fe80d79SJon Loeliger CONFIG_BOOTP_* symbols: 1915fe389a82Sstroese 19161fe80d79SJon Loeliger CONFIG_BOOTP_SUBNETMASK 19171fe80d79SJon Loeliger CONFIG_BOOTP_GATEWAY 19181fe80d79SJon Loeliger CONFIG_BOOTP_HOSTNAME 19191fe80d79SJon Loeliger CONFIG_BOOTP_NISDOMAIN 19201fe80d79SJon Loeliger CONFIG_BOOTP_BOOTPATH 19211fe80d79SJon Loeliger CONFIG_BOOTP_BOOTFILESIZE 19221fe80d79SJon Loeliger CONFIG_BOOTP_DNS 19231fe80d79SJon Loeliger CONFIG_BOOTP_DNS2 19241fe80d79SJon Loeliger CONFIG_BOOTP_SEND_HOSTNAME 19251fe80d79SJon Loeliger CONFIG_BOOTP_NTPSERVER 19261fe80d79SJon Loeliger CONFIG_BOOTP_TIMEOFFSET 19271fe80d79SJon Loeliger CONFIG_BOOTP_VENDOREX 19282c00e099SJoe Hershberger CONFIG_BOOTP_MAY_FAIL 1929fe389a82Sstroese 19305d110f0aSWilson Callan CONFIG_BOOTP_SERVERIP - TFTP server will be the serverip 19315d110f0aSWilson Callan environment variable, not the BOOTP server. 1932fe389a82Sstroese 19332c00e099SJoe Hershberger CONFIG_BOOTP_MAY_FAIL - If the DHCP server is not found 19342c00e099SJoe Hershberger after the configured retry count, the call will fail 19352c00e099SJoe Hershberger instead of starting over. This can be used to fail over 19362c00e099SJoe Hershberger to Link-local IP address configuration if the DHCP server 19372c00e099SJoe Hershberger is not available. 19382c00e099SJoe Hershberger 1939fe389a82Sstroese CONFIG_BOOTP_DNS2 - If a DHCP client requests the DNS 1940fe389a82Sstroese serverip from a DHCP server, it is possible that more 1941fe389a82Sstroese than one DNS serverip is offered to the client. 1942fe389a82Sstroese If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS 1943fe389a82Sstroese serverip will be stored in the additional environment 1944fe389a82Sstroese variable "dnsip2". The first DNS serverip is always 1945fe389a82Sstroese stored in the variable "dnsip", when CONFIG_BOOTP_DNS 19461fe80d79SJon Loeliger is defined. 1947fe389a82Sstroese 1948fe389a82Sstroese CONFIG_BOOTP_SEND_HOSTNAME - Some DHCP servers are capable 1949fe389a82Sstroese to do a dynamic update of a DNS server. To do this, they 1950fe389a82Sstroese need the hostname of the DHCP requester. 19515d110f0aSWilson Callan If CONFIG_BOOTP_SEND_HOSTNAME is defined, the content 19521fe80d79SJon Loeliger of the "hostname" environment variable is passed as 19531fe80d79SJon Loeliger option 12 to the DHCP server. 1954fe389a82Sstroese 1955d9a2f416SAras Vaichas CONFIG_BOOTP_DHCP_REQUEST_DELAY 1956d9a2f416SAras Vaichas 1957d9a2f416SAras Vaichas A 32bit value in microseconds for a delay between 1958d9a2f416SAras Vaichas receiving a "DHCP Offer" and sending the "DHCP Request". 1959d9a2f416SAras Vaichas This fixes a problem with certain DHCP servers that don't 1960d9a2f416SAras Vaichas respond 100% of the time to a "DHCP request". E.g. On an 1961d9a2f416SAras Vaichas AT91RM9200 processor running at 180MHz, this delay needed 1962d9a2f416SAras Vaichas to be *at least* 15,000 usec before a Windows Server 2003 1963d9a2f416SAras Vaichas DHCP server would reply 100% of the time. I recommend at 1964d9a2f416SAras Vaichas least 50,000 usec to be safe. The alternative is to hope 1965d9a2f416SAras Vaichas that one of the retries will be successful but note that 1966d9a2f416SAras Vaichas the DHCP timeout and retry process takes a longer than 1967d9a2f416SAras Vaichas this delay. 1968d9a2f416SAras Vaichas 1969d22c338eSJoe Hershberger - Link-local IP address negotiation: 1970d22c338eSJoe Hershberger Negotiate with other link-local clients on the local network 1971d22c338eSJoe Hershberger for an address that doesn't require explicit configuration. 1972d22c338eSJoe Hershberger This is especially useful if a DHCP server cannot be guaranteed 1973d22c338eSJoe Hershberger to exist in all environments that the device must operate. 1974d22c338eSJoe Hershberger 1975d22c338eSJoe Hershberger See doc/README.link-local for more information. 1976d22c338eSJoe Hershberger 1977a3d991bdSwdenk - CDP Options: 1978a3d991bdSwdenk CONFIG_CDP_DEVICE_ID 1979a3d991bdSwdenk 1980a3d991bdSwdenk The device id used in CDP trigger frames. 1981a3d991bdSwdenk 1982a3d991bdSwdenk CONFIG_CDP_DEVICE_ID_PREFIX 1983a3d991bdSwdenk 1984a3d991bdSwdenk A two character string which is prefixed to the MAC address 1985a3d991bdSwdenk of the device. 1986a3d991bdSwdenk 1987a3d991bdSwdenk CONFIG_CDP_PORT_ID 1988a3d991bdSwdenk 1989a3d991bdSwdenk A printf format string which contains the ascii name of 1990a3d991bdSwdenk the port. Normally is set to "eth%d" which sets 199111ccc33fSMarcel Ziswiler eth0 for the first Ethernet, eth1 for the second etc. 1992a3d991bdSwdenk 1993a3d991bdSwdenk CONFIG_CDP_CAPABILITIES 1994a3d991bdSwdenk 1995a3d991bdSwdenk A 32bit integer which indicates the device capabilities; 1996a3d991bdSwdenk 0x00000010 for a normal host which does not forwards. 1997a3d991bdSwdenk 1998a3d991bdSwdenk CONFIG_CDP_VERSION 1999a3d991bdSwdenk 2000a3d991bdSwdenk An ascii string containing the version of the software. 2001a3d991bdSwdenk 2002a3d991bdSwdenk CONFIG_CDP_PLATFORM 2003a3d991bdSwdenk 2004a3d991bdSwdenk An ascii string containing the name of the platform. 2005a3d991bdSwdenk 2006a3d991bdSwdenk CONFIG_CDP_TRIGGER 2007a3d991bdSwdenk 2008a3d991bdSwdenk A 32bit integer sent on the trigger. 2009a3d991bdSwdenk 2010a3d991bdSwdenk CONFIG_CDP_POWER_CONSUMPTION 2011a3d991bdSwdenk 2012a3d991bdSwdenk A 16bit integer containing the power consumption of the 2013a3d991bdSwdenk device in .1 of milliwatts. 2014a3d991bdSwdenk 2015a3d991bdSwdenk CONFIG_CDP_APPLIANCE_VLAN_TYPE 2016a3d991bdSwdenk 2017a3d991bdSwdenk A byte containing the id of the VLAN. 2018a3d991bdSwdenk 2019c609719bSwdenk- Status LED: CONFIG_STATUS_LED 2020c609719bSwdenk 2021c609719bSwdenk Several configurations allow to display the current 2022c609719bSwdenk status using a LED. For instance, the LED will blink 2023c609719bSwdenk fast while running U-Boot code, stop blinking as 2024c609719bSwdenk soon as a reply to a BOOTP request was received, and 2025c609719bSwdenk start blinking slow once the Linux kernel is running 2026c609719bSwdenk (supported by a status LED driver in the Linux 2027c609719bSwdenk kernel). Defining CONFIG_STATUS_LED enables this 2028c609719bSwdenk feature in U-Boot. 2029c609719bSwdenk 20301df7bbbaSIgor Grinberg Additional options: 20311df7bbbaSIgor Grinberg 20321df7bbbaSIgor Grinberg CONFIG_GPIO_LED 20331df7bbbaSIgor Grinberg The status LED can be connected to a GPIO pin. 20341df7bbbaSIgor Grinberg In such cases, the gpio_led driver can be used as a 20351df7bbbaSIgor Grinberg status LED backend implementation. Define CONFIG_GPIO_LED 20361df7bbbaSIgor Grinberg to include the gpio_led driver in the U-Boot binary. 20371df7bbbaSIgor Grinberg 20389dfdcdfeSIgor Grinberg CONFIG_GPIO_LED_INVERTED_TABLE 20399dfdcdfeSIgor Grinberg Some GPIO connected LEDs may have inverted polarity in which 20409dfdcdfeSIgor Grinberg case the GPIO high value corresponds to LED off state and 20419dfdcdfeSIgor Grinberg GPIO low value corresponds to LED on state. 20429dfdcdfeSIgor Grinberg In such cases CONFIG_GPIO_LED_INVERTED_TABLE may be defined 20439dfdcdfeSIgor Grinberg with a list of GPIO LEDs that have inverted polarity. 20449dfdcdfeSIgor Grinberg 2045c609719bSwdenk- CAN Support: CONFIG_CAN_DRIVER 2046c609719bSwdenk 2047c609719bSwdenk Defining CONFIG_CAN_DRIVER enables CAN driver support 2048c609719bSwdenk on those systems that support this (optional) 2049c609719bSwdenk feature, like the TQM8xxL modules. 2050c609719bSwdenk 20513f4978c7SHeiko Schocher- I2C Support: CONFIG_SYS_I2C 2052c609719bSwdenk 20533f4978c7SHeiko Schocher This enable the NEW i2c subsystem, and will allow you to use 20543f4978c7SHeiko Schocher i2c commands at the u-boot command line (as long as you set 20553f4978c7SHeiko Schocher CONFIG_CMD_I2C in CONFIG_COMMANDS) and communicate with i2c 20563f4978c7SHeiko Schocher based realtime clock chips or other i2c devices. See 20573f4978c7SHeiko Schocher common/cmd_i2c.c for a description of the command line 20583f4978c7SHeiko Schocher interface. 20593f4978c7SHeiko Schocher 20603f4978c7SHeiko Schocher ported i2c driver to the new framework: 2061ea818dbbSHeiko Schocher - drivers/i2c/soft_i2c.c: 2062ea818dbbSHeiko Schocher - activate first bus with CONFIG_SYS_I2C_SOFT define 2063ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED and CONFIG_SYS_I2C_SOFT_SLAVE 2064ea818dbbSHeiko Schocher for defining speed and slave address 2065ea818dbbSHeiko Schocher - activate second bus with I2C_SOFT_DECLARATIONS2 define 2066ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_2 and CONFIG_SYS_I2C_SOFT_SLAVE_2 2067ea818dbbSHeiko Schocher for defining speed and slave address 2068ea818dbbSHeiko Schocher - activate third bus with I2C_SOFT_DECLARATIONS3 define 2069ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_3 and CONFIG_SYS_I2C_SOFT_SLAVE_3 2070ea818dbbSHeiko Schocher for defining speed and slave address 2071ea818dbbSHeiko Schocher - activate fourth bus with I2C_SOFT_DECLARATIONS4 define 2072ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_4 and CONFIG_SYS_I2C_SOFT_SLAVE_4 2073ea818dbbSHeiko Schocher for defining speed and slave address 20743f4978c7SHeiko Schocher 207500f792e0SHeiko Schocher - drivers/i2c/fsl_i2c.c: 207600f792e0SHeiko Schocher - activate i2c driver with CONFIG_SYS_I2C_FSL 207700f792e0SHeiko Schocher define CONFIG_SYS_FSL_I2C_OFFSET for setting the register 207800f792e0SHeiko Schocher offset CONFIG_SYS_FSL_I2C_SPEED for the i2c speed and 207900f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C_SLAVE for the slave addr of the first 208000f792e0SHeiko Schocher bus. 208100f792e0SHeiko Schocher - If your board supports a second fsl i2c bus, define 208200f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_OFFSET for the register offset 208300f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_SPEED for the speed and 208400f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_SLAVE for the slave address of the 208500f792e0SHeiko Schocher second bus. 208600f792e0SHeiko Schocher 20871f2ba722SSimon Glass - drivers/i2c/tegra_i2c.c: 20881f2ba722SSimon Glass - activate this driver with CONFIG_SYS_I2C_TEGRA 20891f2ba722SSimon Glass - This driver adds 4 i2c buses with a fix speed from 20901f2ba722SSimon Glass 100000 and the slave addr 0! 20911f2ba722SSimon Glass 2092880540deSDirk Eibach - drivers/i2c/ppc4xx_i2c.c 2093880540deSDirk Eibach - activate this driver with CONFIG_SYS_I2C_PPC4XX 2094880540deSDirk Eibach - CONFIG_SYS_I2C_PPC4XX_CH0 activate hardware channel 0 2095880540deSDirk Eibach - CONFIG_SYS_I2C_PPC4XX_CH1 activate hardware channel 1 2096880540deSDirk Eibach 2097fac96408Strem - drivers/i2c/i2c_mxc.c 2098fac96408Strem - activate this driver with CONFIG_SYS_I2C_MXC 2099fac96408Strem - define speed for bus 1 with CONFIG_SYS_MXC_I2C1_SPEED 2100fac96408Strem - define slave for bus 1 with CONFIG_SYS_MXC_I2C1_SLAVE 2101fac96408Strem - define speed for bus 2 with CONFIG_SYS_MXC_I2C2_SPEED 2102fac96408Strem - define slave for bus 2 with CONFIG_SYS_MXC_I2C2_SLAVE 2103fac96408Strem - define speed for bus 3 with CONFIG_SYS_MXC_I2C3_SPEED 2104fac96408Strem - define slave for bus 3 with CONFIG_SYS_MXC_I2C3_SLAVE 2105fac96408Strem If thoses defines are not set, default value is 100000 2106fac96408Strem for speed, and 0 for slave. 2107fac96408Strem 21081086bfa9SNobuhiro Iwamatsu - drivers/i2c/rcar_i2c.c: 21091086bfa9SNobuhiro Iwamatsu - activate this driver with CONFIG_SYS_I2C_RCAR 21101086bfa9SNobuhiro Iwamatsu - This driver adds 4 i2c buses 21111086bfa9SNobuhiro Iwamatsu 21121086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C0_BASE for setting the register channel 0 21131086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C0_SPEED for for the speed channel 0 21141086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C1_BASE for setting the register channel 1 21151086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C1_SPEED for for the speed channel 1 21161086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C2_BASE for setting the register channel 2 21171086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C2_SPEED for for the speed channel 2 21181086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C3_BASE for setting the register channel 3 21191086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C3_SPEED for for the speed channel 3 21201086bfa9SNobuhiro Iwamatsu - CONFIF_SYS_RCAR_I2C_NUM_CONTROLLERS for number of i2c buses 21211086bfa9SNobuhiro Iwamatsu 21222035d77dSNobuhiro Iwamatsu - drivers/i2c/sh_i2c.c: 21232035d77dSNobuhiro Iwamatsu - activate this driver with CONFIG_SYS_I2C_SH 21242035d77dSNobuhiro Iwamatsu - This driver adds from 2 to 5 i2c buses 21252035d77dSNobuhiro Iwamatsu 21262035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE0 for setting the register channel 0 21272035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED0 for for the speed channel 0 21282035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE1 for setting the register channel 1 21292035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED1 for for the speed channel 1 21302035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE2 for setting the register channel 2 21312035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED2 for for the speed channel 2 21322035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE3 for setting the register channel 3 21332035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED3 for for the speed channel 3 21342035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE4 for setting the register channel 4 21352035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED4 for for the speed channel 4 21362035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE5 for setting the register channel 5 21372035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED5 for for the speed channel 5 21382035d77dSNobuhiro Iwamatsu - CONFIF_SYS_I2C_SH_NUM_CONTROLLERS for nummber of i2c buses 21392035d77dSNobuhiro Iwamatsu 21406789e84eSHeiko Schocher - drivers/i2c/omap24xx_i2c.c 21416789e84eSHeiko Schocher - activate this driver with CONFIG_SYS_I2C_OMAP24XX 21426789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED speed channel 0 21436789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE slave addr channel 0 21446789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED1 speed channel 1 21456789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE1 slave addr channel 1 21466789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED2 speed channel 2 21476789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE2 slave addr channel 2 21486789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED3 speed channel 3 21496789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE3 slave addr channel 3 21506789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED4 speed channel 4 21516789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE4 slave addr channel 4 21526789e84eSHeiko Schocher 21530bdffe71SHeiko Schocher - drivers/i2c/zynq_i2c.c 21540bdffe71SHeiko Schocher - activate this driver with CONFIG_SYS_I2C_ZYNQ 21550bdffe71SHeiko Schocher - set CONFIG_SYS_I2C_ZYNQ_SPEED for speed setting 21560bdffe71SHeiko Schocher - set CONFIG_SYS_I2C_ZYNQ_SLAVE for slave addr 21570bdffe71SHeiko Schocher 2158e717fc6dSNaveen Krishna Ch - drivers/i2c/s3c24x0_i2c.c: 2159e717fc6dSNaveen Krishna Ch - activate this driver with CONFIG_SYS_I2C_S3C24X0 2160e717fc6dSNaveen Krishna Ch - This driver adds i2c buses (11 for Exynos5250, Exynos5420 2161e717fc6dSNaveen Krishna Ch 9 i2c buses for Exynos4 and 1 for S3C24X0 SoCs from Samsung) 2162e717fc6dSNaveen Krishna Ch with a fix speed from 100000 and the slave addr 0! 2163e717fc6dSNaveen Krishna Ch 21643f4978c7SHeiko Schocher additional defines: 21653f4978c7SHeiko Schocher 21663f4978c7SHeiko Schocher CONFIG_SYS_NUM_I2C_BUSES 21673f4978c7SHeiko Schocher Hold the number of i2c busses you want to use. If you 21683f4978c7SHeiko Schocher don't use/have i2c muxes on your i2c bus, this 21693f4978c7SHeiko Schocher is equal to CONFIG_SYS_NUM_I2C_ADAPTERS, and you can 21703f4978c7SHeiko Schocher omit this define. 21713f4978c7SHeiko Schocher 21723f4978c7SHeiko Schocher CONFIG_SYS_I2C_DIRECT_BUS 21733f4978c7SHeiko Schocher define this, if you don't use i2c muxes on your hardware. 21743f4978c7SHeiko Schocher if CONFIG_SYS_I2C_MAX_HOPS is not defined or == 0 you can 21753f4978c7SHeiko Schocher omit this define. 21763f4978c7SHeiko Schocher 21773f4978c7SHeiko Schocher CONFIG_SYS_I2C_MAX_HOPS 21783f4978c7SHeiko Schocher define how many muxes are maximal consecutively connected 21793f4978c7SHeiko Schocher on one i2c bus. If you not use i2c muxes, omit this 21803f4978c7SHeiko Schocher define. 21813f4978c7SHeiko Schocher 21823f4978c7SHeiko Schocher CONFIG_SYS_I2C_BUSES 21833f4978c7SHeiko Schocher hold a list of busses you want to use, only used if 21843f4978c7SHeiko Schocher CONFIG_SYS_I2C_DIRECT_BUS is not defined, for example 21853f4978c7SHeiko Schocher a board with CONFIG_SYS_I2C_MAX_HOPS = 1 and 21863f4978c7SHeiko Schocher CONFIG_SYS_NUM_I2C_BUSES = 9: 21873f4978c7SHeiko Schocher 21883f4978c7SHeiko Schocher CONFIG_SYS_I2C_BUSES {{0, {I2C_NULL_HOP}}, \ 21893f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 1}}}, \ 21903f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 2}}}, \ 21913f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 3}}}, \ 21923f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 4}}}, \ 21933f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 5}}}, \ 21943f4978c7SHeiko Schocher {1, {I2C_NULL_HOP}}, \ 21953f4978c7SHeiko Schocher {1, {{I2C_MUX_PCA9544, 0x72, 1}}}, \ 21963f4978c7SHeiko Schocher {1, {{I2C_MUX_PCA9544, 0x72, 2}}}, \ 21973f4978c7SHeiko Schocher } 21983f4978c7SHeiko Schocher 21993f4978c7SHeiko Schocher which defines 22003f4978c7SHeiko Schocher bus 0 on adapter 0 without a mux 2201ea818dbbSHeiko Schocher bus 1 on adapter 0 with a PCA9547 on address 0x70 port 1 2202ea818dbbSHeiko Schocher bus 2 on adapter 0 with a PCA9547 on address 0x70 port 2 2203ea818dbbSHeiko Schocher bus 3 on adapter 0 with a PCA9547 on address 0x70 port 3 2204ea818dbbSHeiko Schocher bus 4 on adapter 0 with a PCA9547 on address 0x70 port 4 2205ea818dbbSHeiko Schocher bus 5 on adapter 0 with a PCA9547 on address 0x70 port 5 22063f4978c7SHeiko Schocher bus 6 on adapter 1 without a mux 2207ea818dbbSHeiko Schocher bus 7 on adapter 1 with a PCA9544 on address 0x72 port 1 2208ea818dbbSHeiko Schocher bus 8 on adapter 1 with a PCA9544 on address 0x72 port 2 22093f4978c7SHeiko Schocher 22103f4978c7SHeiko Schocher If you do not have i2c muxes on your board, omit this define. 22113f4978c7SHeiko Schocher 2212ea818dbbSHeiko Schocher- Legacy I2C Support: CONFIG_HARD_I2C 22133f4978c7SHeiko Schocher 22143f4978c7SHeiko Schocher NOTE: It is intended to move drivers to CONFIG_SYS_I2C which 22153f4978c7SHeiko Schocher provides the following compelling advantages: 22163f4978c7SHeiko Schocher 22173f4978c7SHeiko Schocher - more than one i2c adapter is usable 22183f4978c7SHeiko Schocher - approved multibus support 22193f4978c7SHeiko Schocher - better i2c mux support 22203f4978c7SHeiko Schocher 22213f4978c7SHeiko Schocher ** Please consider updating your I2C driver now. ** 22223f4978c7SHeiko Schocher 2223ea818dbbSHeiko Schocher These enable legacy I2C serial bus commands. Defining 2224ea818dbbSHeiko Schocher CONFIG_HARD_I2C will include the appropriate I2C driver 2225ea818dbbSHeiko Schocher for the selected CPU. 2226c609719bSwdenk 2227b37c7e5eSwdenk This will allow you to use i2c commands at the u-boot 2228602ad3b3SJon Loeliger command line (as long as you set CONFIG_CMD_I2C in 2229b37c7e5eSwdenk CONFIG_COMMANDS) and communicate with i2c based realtime 2230b37c7e5eSwdenk clock chips. See common/cmd_i2c.c for a description of the 2231c609719bSwdenk command line interface. 2232c609719bSwdenk 2233bb99ad6dSBen Warren CONFIG_HARD_I2C selects a hardware I2C controller. 2234c609719bSwdenk 2235b37c7e5eSwdenk There are several other quantities that must also be 2236ea818dbbSHeiko Schocher defined when you define CONFIG_HARD_I2C. 2237c609719bSwdenk 22386d0f6bcfSJean-Christophe PLAGNIOL-VILLARD In both cases you will need to define CONFIG_SYS_I2C_SPEED 2239b37c7e5eSwdenk to be the frequency (in Hz) at which you wish your i2c bus 22406d0f6bcfSJean-Christophe PLAGNIOL-VILLARD to run and CONFIG_SYS_I2C_SLAVE to be the address of this node (ie 224111ccc33fSMarcel Ziswiler the CPU's i2c node address). 2242c609719bSwdenk 22438d321b81SPeter Tyser Now, the u-boot i2c code for the mpc8xx 2244a47a12beSStefan Roese (arch/powerpc/cpu/mpc8xx/i2c.c) sets the CPU up as a master node 22458d321b81SPeter Tyser and so its address should therefore be cleared to 0 (See, 22468d321b81SPeter Tyser eg, MPC823e User's Manual p.16-473). So, set 22478d321b81SPeter Tyser CONFIG_SYS_I2C_SLAVE to 0. 2248b37c7e5eSwdenk 22495da71efaSEric Millbrandt CONFIG_SYS_I2C_INIT_MPC5XXX 22505da71efaSEric Millbrandt 22515da71efaSEric Millbrandt When a board is reset during an i2c bus transfer 22525da71efaSEric Millbrandt chips might think that the current transfer is still 22535da71efaSEric Millbrandt in progress. Reset the slave devices by sending start 22545da71efaSEric Millbrandt commands until the slave device responds. 22555da71efaSEric Millbrandt 2256b37c7e5eSwdenk That's all that's required for CONFIG_HARD_I2C. 2257b37c7e5eSwdenk 2258ea818dbbSHeiko Schocher If you use the software i2c interface (CONFIG_SYS_I2C_SOFT) 2259b37c7e5eSwdenk then the following macros need to be defined (examples are 2260b37c7e5eSwdenk from include/configs/lwmon.h): 2261c609719bSwdenk 2262c609719bSwdenk I2C_INIT 2263c609719bSwdenk 2264b37c7e5eSwdenk (Optional). Any commands necessary to enable the I2C 2265c609719bSwdenk controller or configure ports. 2266c609719bSwdenk 2267b37c7e5eSwdenk eg: #define I2C_INIT (immr->im_cpm.cp_pbdir |= PB_SCL) 2268b37c7e5eSwdenk 2269c609719bSwdenk I2C_PORT 2270c609719bSwdenk 2271c609719bSwdenk (Only for MPC8260 CPU). The I/O port to use (the code 2272c609719bSwdenk assumes both bits are on the same port). Valid values 2273c609719bSwdenk are 0..3 for ports A..D. 2274c609719bSwdenk 2275c609719bSwdenk I2C_ACTIVE 2276c609719bSwdenk 2277c609719bSwdenk The code necessary to make the I2C data line active 2278c609719bSwdenk (driven). If the data line is open collector, this 2279c609719bSwdenk define can be null. 2280c609719bSwdenk 2281b37c7e5eSwdenk eg: #define I2C_ACTIVE (immr->im_cpm.cp_pbdir |= PB_SDA) 2282b37c7e5eSwdenk 2283c609719bSwdenk I2C_TRISTATE 2284c609719bSwdenk 2285c609719bSwdenk The code necessary to make the I2C data line tri-stated 2286c609719bSwdenk (inactive). If the data line is open collector, this 2287c609719bSwdenk define can be null. 2288c609719bSwdenk 2289b37c7e5eSwdenk eg: #define I2C_TRISTATE (immr->im_cpm.cp_pbdir &= ~PB_SDA) 2290b37c7e5eSwdenk 2291c609719bSwdenk I2C_READ 2292c609719bSwdenk 2293472d5460SYork Sun Code that returns true if the I2C data line is high, 2294472d5460SYork Sun false if it is low. 2295c609719bSwdenk 2296b37c7e5eSwdenk eg: #define I2C_READ ((immr->im_cpm.cp_pbdat & PB_SDA) != 0) 2297b37c7e5eSwdenk 2298c609719bSwdenk I2C_SDA(bit) 2299c609719bSwdenk 2300472d5460SYork Sun If <bit> is true, sets the I2C data line high. If it 2301472d5460SYork Sun is false, it clears it (low). 2302c609719bSwdenk 2303b37c7e5eSwdenk eg: #define I2C_SDA(bit) \ 2304b37c7e5eSwdenk if(bit) immr->im_cpm.cp_pbdat |= PB_SDA; \ 2305b37c7e5eSwdenk else immr->im_cpm.cp_pbdat &= ~PB_SDA 2306b37c7e5eSwdenk 2307c609719bSwdenk I2C_SCL(bit) 2308c609719bSwdenk 2309472d5460SYork Sun If <bit> is true, sets the I2C clock line high. If it 2310472d5460SYork Sun is false, it clears it (low). 2311c609719bSwdenk 2312b37c7e5eSwdenk eg: #define I2C_SCL(bit) \ 2313b37c7e5eSwdenk if(bit) immr->im_cpm.cp_pbdat |= PB_SCL; \ 2314b37c7e5eSwdenk else immr->im_cpm.cp_pbdat &= ~PB_SCL 2315b37c7e5eSwdenk 2316c609719bSwdenk I2C_DELAY 2317c609719bSwdenk 2318c609719bSwdenk This delay is invoked four times per clock cycle so this 2319c609719bSwdenk controls the rate of data transfer. The data rate thus 2320b37c7e5eSwdenk is 1 / (I2C_DELAY * 4). Often defined to be something 2321b37c7e5eSwdenk like: 2322b37c7e5eSwdenk 2323b37c7e5eSwdenk #define I2C_DELAY udelay(2) 2324c609719bSwdenk 2325793b5726SMike Frysinger CONFIG_SOFT_I2C_GPIO_SCL / CONFIG_SOFT_I2C_GPIO_SDA 2326793b5726SMike Frysinger 2327793b5726SMike Frysinger If your arch supports the generic GPIO framework (asm/gpio.h), 2328793b5726SMike Frysinger then you may alternatively define the two GPIOs that are to be 2329793b5726SMike Frysinger used as SCL / SDA. Any of the previous I2C_xxx macros will 2330793b5726SMike Frysinger have GPIO-based defaults assigned to them as appropriate. 2331793b5726SMike Frysinger 2332793b5726SMike Frysinger You should define these to the GPIO value as given directly to 2333793b5726SMike Frysinger the generic GPIO functions. 2334793b5726SMike Frysinger 23356d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_INIT_BOARD 233647cd00faSwdenk 233747cd00faSwdenk When a board is reset during an i2c bus transfer 233847cd00faSwdenk chips might think that the current transfer is still 233947cd00faSwdenk in progress. On some boards it is possible to access 234047cd00faSwdenk the i2c SCLK line directly, either by using the 234147cd00faSwdenk processor pin as a GPIO or by having a second pin 234247cd00faSwdenk connected to the bus. If this option is defined a 234347cd00faSwdenk custom i2c_init_board() routine in boards/xxx/board.c 234447cd00faSwdenk is run early in the boot sequence. 234547cd00faSwdenk 234626a33504SRichard Retanubun CONFIG_SYS_I2C_BOARD_LATE_INIT 234726a33504SRichard Retanubun 234826a33504SRichard Retanubun An alternative to CONFIG_SYS_I2C_INIT_BOARD. If this option is 234926a33504SRichard Retanubun defined a custom i2c_board_late_init() routine in 235026a33504SRichard Retanubun boards/xxx/board.c is run AFTER the operations in i2c_init() 235126a33504SRichard Retanubun is completed. This callpoint can be used to unreset i2c bus 235226a33504SRichard Retanubun using CPU i2c controller register accesses for CPUs whose i2c 235326a33504SRichard Retanubun controller provide such a method. It is called at the end of 235426a33504SRichard Retanubun i2c_init() to allow i2c_init operations to setup the i2c bus 235526a33504SRichard Retanubun controller on the CPU (e.g. setting bus speed & slave address). 235626a33504SRichard Retanubun 235717ea1177Swdenk CONFIG_I2CFAST (PPC405GP|PPC405EP only) 235817ea1177Swdenk 235917ea1177Swdenk This option enables configuration of bi_iic_fast[] flags 236017ea1177Swdenk in u-boot bd_info structure based on u-boot environment 236117ea1177Swdenk variable "i2cfast". (see also i2cfast) 236217ea1177Swdenk 2363bb99ad6dSBen Warren CONFIG_I2C_MULTI_BUS 2364bb99ad6dSBen Warren 2365bb99ad6dSBen Warren This option allows the use of multiple I2C buses, each of which 2366bb99ad6dSBen Warren must have a controller. At any point in time, only one bus is 2367bb99ad6dSBen Warren active. To switch to a different bus, use the 'i2c dev' command. 2368bb99ad6dSBen Warren Note that bus numbering is zero-based. 2369bb99ad6dSBen Warren 23706d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_NOPROBES 2371bb99ad6dSBen Warren 2372bb99ad6dSBen Warren This option specifies a list of I2C devices that will be skipped 23730f89c54bSPeter Tyser when the 'i2c probe' command is issued. If CONFIG_I2C_MULTI_BUS 23740f89c54bSPeter Tyser is set, specify a list of bus-device pairs. Otherwise, specify 23750f89c54bSPeter Tyser a 1D array of device addresses 2376bb99ad6dSBen Warren 2377bb99ad6dSBen Warren e.g. 2378bb99ad6dSBen Warren #undef CONFIG_I2C_MULTI_BUS 23796d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_I2C_NOPROBES {0x50,0x68} 2380bb99ad6dSBen Warren 2381bb99ad6dSBen Warren will skip addresses 0x50 and 0x68 on a board with one I2C bus 2382bb99ad6dSBen Warren 2383bb99ad6dSBen Warren #define CONFIG_I2C_MULTI_BUS 23846d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_I2C_MULTI_NOPROBES {{0,0x50},{0,0x68},{1,0x54}} 2385bb99ad6dSBen Warren 2386bb99ad6dSBen Warren will skip addresses 0x50 and 0x68 on bus 0 and address 0x54 on bus 1 2387bb99ad6dSBen Warren 23886d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SPD_BUS_NUM 2389be5e6181STimur Tabi 2390be5e6181STimur Tabi If defined, then this indicates the I2C bus number for DDR SPD. 2391be5e6181STimur Tabi If not defined, then U-Boot assumes that SPD is on I2C bus 0. 2392be5e6181STimur Tabi 23936d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_RTC_BUS_NUM 23940dc018ecSStefan Roese 23950dc018ecSStefan Roese If defined, then this indicates the I2C bus number for the RTC. 23960dc018ecSStefan Roese If not defined, then U-Boot assumes that RTC is on I2C bus 0. 23970dc018ecSStefan Roese 23986d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_DTT_BUS_NUM 23990dc018ecSStefan Roese 24000dc018ecSStefan Roese If defined, then this indicates the I2C bus number for the DTT. 24010dc018ecSStefan Roese If not defined, then U-Boot assumes that DTT is on I2C bus 0. 24020dc018ecSStefan Roese 24036d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_DTT_ADDR: 24049ebbb54fSVictor Gallardo 24059ebbb54fSVictor Gallardo If defined, specifies the I2C address of the DTT device. 24069ebbb54fSVictor Gallardo If not defined, then U-Boot uses predefined value for 24079ebbb54fSVictor Gallardo specified DTT device. 24089ebbb54fSVictor Gallardo 24092ac6985aSAndrew Dyer CONFIG_SOFT_I2C_READ_REPEATED_START 24102ac6985aSAndrew Dyer 24112ac6985aSAndrew Dyer defining this will force the i2c_read() function in 24122ac6985aSAndrew Dyer the soft_i2c driver to perform an I2C repeated start 24132ac6985aSAndrew Dyer between writing the address pointer and reading the 24142ac6985aSAndrew Dyer data. If this define is omitted the default behaviour 24152ac6985aSAndrew Dyer of doing a stop-start sequence will be used. Most I2C 24162ac6985aSAndrew Dyer devices can use either method, but some require one or 24172ac6985aSAndrew Dyer the other. 2418be5e6181STimur Tabi 2419c609719bSwdenk- SPI Support: CONFIG_SPI 2420c609719bSwdenk 2421c609719bSwdenk Enables SPI driver (so far only tested with 2422c609719bSwdenk SPI EEPROM, also an instance works with Crystal A/D and 2423c609719bSwdenk D/As on the SACSng board) 2424c609719bSwdenk 24256639562eSYoshihiro Shimoda CONFIG_SH_SPI 24266639562eSYoshihiro Shimoda 24276639562eSYoshihiro Shimoda Enables the driver for SPI controller on SuperH. Currently 24286639562eSYoshihiro Shimoda only SH7757 is supported. 24296639562eSYoshihiro Shimoda 2430c609719bSwdenk CONFIG_SPI_X 2431c609719bSwdenk 2432c609719bSwdenk Enables extended (16-bit) SPI EEPROM addressing. 2433c609719bSwdenk (symmetrical to CONFIG_I2C_X) 2434c609719bSwdenk 2435c609719bSwdenk CONFIG_SOFT_SPI 2436c609719bSwdenk 2437c609719bSwdenk Enables a software (bit-bang) SPI driver rather than 2438c609719bSwdenk using hardware support. This is a general purpose 2439c609719bSwdenk driver that only requires three general I/O port pins 2440c609719bSwdenk (two outputs, one input) to function. If this is 2441c609719bSwdenk defined, the board configuration must define several 2442c609719bSwdenk SPI configuration items (port pins to use, etc). For 2443c609719bSwdenk an example, see include/configs/sacsng.h. 2444c609719bSwdenk 244504a9e118SBen Warren CONFIG_HARD_SPI 244604a9e118SBen Warren 244704a9e118SBen Warren Enables a hardware SPI driver for general-purpose reads 244804a9e118SBen Warren and writes. As with CONFIG_SOFT_SPI, the board configuration 244904a9e118SBen Warren must define a list of chip-select function pointers. 245004a9e118SBen Warren Currently supported on some MPC8xxx processors. For an 245104a9e118SBen Warren example, see include/configs/mpc8349emds.h. 245204a9e118SBen Warren 245338254f45SGuennadi Liakhovetski CONFIG_MXC_SPI 245438254f45SGuennadi Liakhovetski 245538254f45SGuennadi Liakhovetski Enables the driver for the SPI controllers on i.MX and MXC 24562e3cd1cdSFabio Estevam SoCs. Currently i.MX31/35/51 are supported. 245738254f45SGuennadi Liakhovetski 24580133502eSMatthias Fuchs- FPGA Support: CONFIG_FPGA 24590133502eSMatthias Fuchs 24600133502eSMatthias Fuchs Enables FPGA subsystem. 24610133502eSMatthias Fuchs 24620133502eSMatthias Fuchs CONFIG_FPGA_<vendor> 24630133502eSMatthias Fuchs 24640133502eSMatthias Fuchs Enables support for specific chip vendors. 24650133502eSMatthias Fuchs (ALTERA, XILINX) 24660133502eSMatthias Fuchs 24670133502eSMatthias Fuchs CONFIG_FPGA_<family> 24680133502eSMatthias Fuchs 24690133502eSMatthias Fuchs Enables support for FPGA family. 24700133502eSMatthias Fuchs (SPARTAN2, SPARTAN3, VIRTEX2, CYCLONE2, ACEX1K, ACEX) 24710133502eSMatthias Fuchs 24720133502eSMatthias Fuchs CONFIG_FPGA_COUNT 2473c609719bSwdenk 2474c609719bSwdenk Specify the number of FPGA devices to support. 2475c609719bSwdenk 24766d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_PROG_FEEDBACK 2477c609719bSwdenk 2478c609719bSwdenk Enable printing of hash marks during FPGA configuration. 2479c609719bSwdenk 24806d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_BUSY 2481c609719bSwdenk 2482c609719bSwdenk Enable checks on FPGA configuration interface busy 2483c609719bSwdenk status by the configuration function. This option 2484c609719bSwdenk will require a board or device specific function to 2485c609719bSwdenk be written. 2486c609719bSwdenk 2487c609719bSwdenk CONFIG_FPGA_DELAY 2488c609719bSwdenk 2489c609719bSwdenk If defined, a function that provides delays in the FPGA 2490c609719bSwdenk configuration driver. 2491c609719bSwdenk 24926d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_CTRLC 2493c609719bSwdenk Allow Control-C to interrupt FPGA configuration 2494c609719bSwdenk 24956d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_ERROR 2496c609719bSwdenk 2497c609719bSwdenk Check for configuration errors during FPGA bitfile 2498c609719bSwdenk loading. For example, abort during Virtex II 2499c609719bSwdenk configuration if the INIT_B line goes low (which 2500c609719bSwdenk indicated a CRC error). 2501c609719bSwdenk 25026d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_INIT 2503c609719bSwdenk 2504c609719bSwdenk Maximum time to wait for the INIT_B line to deassert 2505c609719bSwdenk after PROB_B has been deasserted during a Virtex II 2506c609719bSwdenk FPGA configuration sequence. The default time is 500 250711ccc33fSMarcel Ziswiler ms. 2508c609719bSwdenk 25096d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_BUSY 2510c609719bSwdenk 2511c609719bSwdenk Maximum time to wait for BUSY to deassert during 251211ccc33fSMarcel Ziswiler Virtex II FPGA configuration. The default is 5 ms. 2513c609719bSwdenk 25146d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_CONFIG 2515c609719bSwdenk 2516c609719bSwdenk Time to wait after FPGA configuration. The default is 251711ccc33fSMarcel Ziswiler 200 ms. 2518c609719bSwdenk 2519c609719bSwdenk- Configuration Management: 2520c609719bSwdenk CONFIG_IDENT_STRING 2521c609719bSwdenk 2522c609719bSwdenk If defined, this string will be added to the U-Boot 2523c609719bSwdenk version information (U_BOOT_VERSION) 2524c609719bSwdenk 2525c609719bSwdenk- Vendor Parameter Protection: 2526c609719bSwdenk 2527c609719bSwdenk U-Boot considers the values of the environment 2528c609719bSwdenk variables "serial#" (Board Serial Number) and 25297152b1d0Swdenk "ethaddr" (Ethernet Address) to be parameters that 2530c609719bSwdenk are set once by the board vendor / manufacturer, and 2531c609719bSwdenk protects these variables from casual modification by 2532c609719bSwdenk the user. Once set, these variables are read-only, 2533c609719bSwdenk and write or delete attempts are rejected. You can 253411ccc33fSMarcel Ziswiler change this behaviour: 2535c609719bSwdenk 2536c609719bSwdenk If CONFIG_ENV_OVERWRITE is #defined in your config 2537c609719bSwdenk file, the write protection for vendor parameters is 253847cd00faSwdenk completely disabled. Anybody can change or delete 2539c609719bSwdenk these parameters. 2540c609719bSwdenk 2541c609719bSwdenk Alternatively, if you #define _both_ CONFIG_ETHADDR 2542c609719bSwdenk _and_ CONFIG_OVERWRITE_ETHADDR_ONCE, a default 254311ccc33fSMarcel Ziswiler Ethernet address is installed in the environment, 2544c609719bSwdenk which can be changed exactly ONCE by the user. [The 2545c609719bSwdenk serial# is unaffected by this, i. e. it remains 2546c609719bSwdenk read-only.] 2547c609719bSwdenk 25482598090bSJoe Hershberger The same can be accomplished in a more flexible way 25492598090bSJoe Hershberger for any variable by configuring the type of access 25502598090bSJoe Hershberger to allow for those variables in the ".flags" variable 25512598090bSJoe Hershberger or define CONFIG_ENV_FLAGS_LIST_STATIC. 25522598090bSJoe Hershberger 2553c609719bSwdenk- Protected RAM: 2554c609719bSwdenk CONFIG_PRAM 2555c609719bSwdenk 2556c609719bSwdenk Define this variable to enable the reservation of 2557c609719bSwdenk "protected RAM", i. e. RAM which is not overwritten 2558c609719bSwdenk by U-Boot. Define CONFIG_PRAM to hold the number of 2559c609719bSwdenk kB you want to reserve for pRAM. You can overwrite 2560c609719bSwdenk this default value by defining an environment 2561c609719bSwdenk variable "pram" to the number of kB you want to 2562c609719bSwdenk reserve. Note that the board info structure will 2563c609719bSwdenk still show the full amount of RAM. If pRAM is 2564c609719bSwdenk reserved, a new environment variable "mem" will 2565c609719bSwdenk automatically be defined to hold the amount of 2566c609719bSwdenk remaining RAM in a form that can be passed as boot 2567c609719bSwdenk argument to Linux, for instance like that: 2568c609719bSwdenk 2569fe126d8bSWolfgang Denk setenv bootargs ... mem=\${mem} 2570c609719bSwdenk saveenv 2571c609719bSwdenk 2572c609719bSwdenk This way you can tell Linux not to use this memory, 2573c609719bSwdenk either, which results in a memory region that will 2574c609719bSwdenk not be affected by reboots. 2575c609719bSwdenk 2576c609719bSwdenk *WARNING* If your board configuration uses automatic 2577c609719bSwdenk detection of the RAM size, you must make sure that 2578c609719bSwdenk this memory test is non-destructive. So far, the 2579c609719bSwdenk following board configurations are known to be 2580c609719bSwdenk "pRAM-clean": 2581c609719bSwdenk 25821b0757ecSWolfgang Denk IVMS8, IVML24, SPD8xx, TQM8xxL, 25831b0757ecSWolfgang Denk HERMES, IP860, RPXlite, LWMON, 2584544d97e9SWolfgang Denk FLAGADM, TQM8260 2585c609719bSwdenk 258640fef049SGabe Black- Access to physical memory region (> 4GB) 258740fef049SGabe Black Some basic support is provided for operations on memory not 258840fef049SGabe Black normally accessible to U-Boot - e.g. some architectures 258940fef049SGabe Black support access to more than 4GB of memory on 32-bit 259040fef049SGabe Black machines using physical address extension or similar. 259140fef049SGabe Black Define CONFIG_PHYSMEM to access this basic support, which 259240fef049SGabe Black currently only supports clearing the memory. 259340fef049SGabe Black 2594c609719bSwdenk- Error Recovery: 2595c609719bSwdenk CONFIG_PANIC_HANG 2596c609719bSwdenk 2597c609719bSwdenk Define this variable to stop the system in case of a 2598c609719bSwdenk fatal error, so that you have to reset it manually. 2599c609719bSwdenk This is probably NOT a good idea for an embedded 260011ccc33fSMarcel Ziswiler system where you want the system to reboot 2601c609719bSwdenk automatically as fast as possible, but it may be 2602c609719bSwdenk useful during development since you can try to debug 2603c609719bSwdenk the conditions that lead to the situation. 2604c609719bSwdenk 2605c609719bSwdenk CONFIG_NET_RETRY_COUNT 2606c609719bSwdenk 2607c609719bSwdenk This variable defines the number of retries for 2608c609719bSwdenk network operations like ARP, RARP, TFTP, or BOOTP 2609c609719bSwdenk before giving up the operation. If not defined, a 2610c609719bSwdenk default value of 5 is used. 2611c609719bSwdenk 261240cb90eeSGuennadi Liakhovetski CONFIG_ARP_TIMEOUT 261340cb90eeSGuennadi Liakhovetski 261440cb90eeSGuennadi Liakhovetski Timeout waiting for an ARP reply in milliseconds. 261540cb90eeSGuennadi Liakhovetski 261648a3e999STetsuyuki Kobayashi CONFIG_NFS_TIMEOUT 261748a3e999STetsuyuki Kobayashi 261848a3e999STetsuyuki Kobayashi Timeout in milliseconds used in NFS protocol. 261948a3e999STetsuyuki Kobayashi If you encounter "ERROR: Cannot umount" in nfs command, 262048a3e999STetsuyuki Kobayashi try longer timeout such as 262148a3e999STetsuyuki Kobayashi #define CONFIG_NFS_TIMEOUT 10000UL 262248a3e999STetsuyuki Kobayashi 2623c609719bSwdenk- Command Interpreter: 26248078f1a5SWolfgang Denk CONFIG_AUTO_COMPLETE 262504a85b3bSwdenk 262604a85b3bSwdenk Enable auto completion of commands using TAB. 262704a85b3bSwdenk 26288078f1a5SWolfgang Denk Note that this feature has NOT been implemented yet 26298078f1a5SWolfgang Denk for the "hush" shell. 26308078f1a5SWolfgang Denk 26318078f1a5SWolfgang Denk 26326d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_HUSH_PARSER 2633c609719bSwdenk 2634c609719bSwdenk Define this variable to enable the "hush" shell (from 2635c609719bSwdenk Busybox) as command line interpreter, thus enabling 2636c609719bSwdenk powerful command line syntax like 2637c609719bSwdenk if...then...else...fi conditionals or `&&' and '||' 2638c609719bSwdenk constructs ("shell scripts"). 2639c609719bSwdenk 2640c609719bSwdenk If undefined, you get the old, much simpler behaviour 2641c609719bSwdenk with a somewhat smaller memory footprint. 2642c609719bSwdenk 2643c609719bSwdenk 26446d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PROMPT_HUSH_PS2 2645c609719bSwdenk 2646c609719bSwdenk This defines the secondary prompt string, which is 2647c609719bSwdenk printed when the command interpreter needs more input 2648c609719bSwdenk to complete a command. Usually "> ". 2649c609719bSwdenk 2650c609719bSwdenk Note: 2651c609719bSwdenk 2652c609719bSwdenk In the current implementation, the local variables 2653c609719bSwdenk space and global environment variables space are 2654c609719bSwdenk separated. Local variables are those you define by 26553b57fe0aSwdenk simply typing `name=value'. To access a local 2656c609719bSwdenk variable later on, you have write `$name' or 26573b57fe0aSwdenk `${name}'; to execute the contents of a variable 26583b57fe0aSwdenk directly type `$name' at the command prompt. 2659c609719bSwdenk 2660c609719bSwdenk Global environment variables are those you use 2661c609719bSwdenk setenv/printenv to work with. To run a command stored 2662c609719bSwdenk in such a variable, you need to use the run command, 2663c609719bSwdenk and you must not use the '$' sign to access them. 2664c609719bSwdenk 2665c609719bSwdenk To store commands and special characters in a 2666c609719bSwdenk variable, please use double quotation marks 2667c609719bSwdenk surrounding the whole text of the variable, instead 2668c609719bSwdenk of the backslashes before semicolons and special 2669c609719bSwdenk symbols. 2670c609719bSwdenk 2671aa0c71acSWolfgang Denk- Commandline Editing and History: 2672aa0c71acSWolfgang Denk CONFIG_CMDLINE_EDITING 2673aa0c71acSWolfgang Denk 267411ccc33fSMarcel Ziswiler Enable editing and History functions for interactive 2675aa0c71acSWolfgang Denk commandline input operations 2676aa0c71acSWolfgang Denk 2677a8c7c708Swdenk- Default Environment: 2678c609719bSwdenk CONFIG_EXTRA_ENV_SETTINGS 2679c609719bSwdenk 2680c609719bSwdenk Define this to contain any number of null terminated 2681c609719bSwdenk strings (variable = value pairs) that will be part of 26827152b1d0Swdenk the default environment compiled into the boot image. 26832262cfeeSwdenk 2684c609719bSwdenk For example, place something like this in your 2685c609719bSwdenk board's config file: 2686c609719bSwdenk 2687c609719bSwdenk #define CONFIG_EXTRA_ENV_SETTINGS \ 2688c609719bSwdenk "myvar1=value1\0" \ 2689c609719bSwdenk "myvar2=value2\0" 2690c609719bSwdenk 2691c609719bSwdenk Warning: This method is based on knowledge about the 2692c609719bSwdenk internal format how the environment is stored by the 26932262cfeeSwdenk U-Boot code. This is NOT an official, exported 2694c609719bSwdenk interface! Although it is unlikely that this format 26957152b1d0Swdenk will change soon, there is no guarantee either. 2696c609719bSwdenk You better know what you are doing here. 2697c609719bSwdenk 2698c609719bSwdenk Note: overly (ab)use of the default environment is 2699c609719bSwdenk discouraged. Make sure to check other ways to preset 270074de7aefSWolfgang Denk the environment like the "source" command or the 2701c609719bSwdenk boot command first. 2702c609719bSwdenk 27035e724ca2SStephen Warren CONFIG_ENV_VARS_UBOOT_CONFIG 27045e724ca2SStephen Warren 27055e724ca2SStephen Warren Define this in order to add variables describing the 27065e724ca2SStephen Warren U-Boot build configuration to the default environment. 27075e724ca2SStephen Warren These will be named arch, cpu, board, vendor, and soc. 27085e724ca2SStephen Warren 27095e724ca2SStephen Warren Enabling this option will cause the following to be defined: 27105e724ca2SStephen Warren 27115e724ca2SStephen Warren - CONFIG_SYS_ARCH 27125e724ca2SStephen Warren - CONFIG_SYS_CPU 27135e724ca2SStephen Warren - CONFIG_SYS_BOARD 27145e724ca2SStephen Warren - CONFIG_SYS_VENDOR 27155e724ca2SStephen Warren - CONFIG_SYS_SOC 27165e724ca2SStephen Warren 27177e27f89fSTom Rini CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG 27187e27f89fSTom Rini 27197e27f89fSTom Rini Define this in order to add variables describing certain 27207e27f89fSTom Rini run-time determined information about the hardware to the 27217e27f89fSTom Rini environment. These will be named board_name, board_rev. 27227e27f89fSTom Rini 272306fd8538SSimon Glass CONFIG_DELAY_ENVIRONMENT 272406fd8538SSimon Glass 272506fd8538SSimon Glass Normally the environment is loaded when the board is 272606fd8538SSimon Glass intialised so that it is available to U-Boot. This inhibits 272706fd8538SSimon Glass that so that the environment is not available until 272806fd8538SSimon Glass explicitly loaded later by U-Boot code. With CONFIG_OF_CONTROL 272906fd8538SSimon Glass this is instead controlled by the value of 273006fd8538SSimon Glass /config/load-environment. 273106fd8538SSimon Glass 2732a8c7c708Swdenk- DataFlash Support: 27332abbe075Swdenk CONFIG_HAS_DATAFLASH 27342abbe075Swdenk 27352abbe075Swdenk Defining this option enables DataFlash features and 27362abbe075Swdenk allows to read/write in Dataflash via the standard 27372abbe075Swdenk commands cp, md... 27382abbe075Swdenk 2739f61ec45eSEric Nelson- Serial Flash support 2740f61ec45eSEric Nelson CONFIG_CMD_SF 2741f61ec45eSEric Nelson 2742f61ec45eSEric Nelson Defining this option enables SPI flash commands 2743f61ec45eSEric Nelson 'sf probe/read/write/erase/update'. 2744f61ec45eSEric Nelson 2745f61ec45eSEric Nelson Usage requires an initial 'probe' to define the serial 2746f61ec45eSEric Nelson flash parameters, followed by read/write/erase/update 2747f61ec45eSEric Nelson commands. 2748f61ec45eSEric Nelson 2749f61ec45eSEric Nelson The following defaults may be provided by the platform 2750f61ec45eSEric Nelson to handle the common case when only a single serial 2751f61ec45eSEric Nelson flash is present on the system. 2752f61ec45eSEric Nelson 2753f61ec45eSEric Nelson CONFIG_SF_DEFAULT_BUS Bus identifier 2754f61ec45eSEric Nelson CONFIG_SF_DEFAULT_CS Chip-select 2755f61ec45eSEric Nelson CONFIG_SF_DEFAULT_MODE (see include/spi.h) 2756f61ec45eSEric Nelson CONFIG_SF_DEFAULT_SPEED in Hz 2757f61ec45eSEric Nelson 275824007273SSimon Glass CONFIG_CMD_SF_TEST 275924007273SSimon Glass 276024007273SSimon Glass Define this option to include a destructive SPI flash 276124007273SSimon Glass test ('sf test'). 276224007273SSimon Glass 27631dcd6d03SJagannadha Sutradharudu Teki CONFIG_SPI_FLASH_BAR Ban/Extended Addr Reg 27641dcd6d03SJagannadha Sutradharudu Teki 27651dcd6d03SJagannadha Sutradharudu Teki Define this option to use the Bank addr/Extended addr 27661dcd6d03SJagannadha Sutradharudu Teki support on SPI flashes which has size > 16Mbytes. 27671dcd6d03SJagannadha Sutradharudu Teki 2768b902e07cSJagannadha Sutradharudu Teki CONFIG_SF_DUAL_FLASH Dual flash memories 2769b902e07cSJagannadha Sutradharudu Teki 2770b902e07cSJagannadha Sutradharudu Teki Define this option to use dual flash support where two flash 2771b902e07cSJagannadha Sutradharudu Teki memories can be connected with a given cs line. 2772b902e07cSJagannadha Sutradharudu Teki currently Xilinx Zynq qspi support these type of connections. 2773b902e07cSJagannadha Sutradharudu Teki 27743f85ce27Swdenk- SystemACE Support: 27753f85ce27Swdenk CONFIG_SYSTEMACE 27763f85ce27Swdenk 27773f85ce27Swdenk Adding this option adds support for Xilinx SystemACE 27783f85ce27Swdenk chips attached via some sort of local bus. The address 277911ccc33fSMarcel Ziswiler of the chip must also be defined in the 27806d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SYSTEMACE_BASE macro. For example: 27813f85ce27Swdenk 27823f85ce27Swdenk #define CONFIG_SYSTEMACE 27836d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_SYSTEMACE_BASE 0xf0000000 27843f85ce27Swdenk 27853f85ce27Swdenk When SystemACE support is added, the "ace" device type 27863f85ce27Swdenk becomes available to the fat commands, i.e. fatls. 27873f85ce27Swdenk 2788ecb0ccd9SWolfgang Denk- TFTP Fixed UDP Port: 2789ecb0ccd9SWolfgang Denk CONFIG_TFTP_PORT 2790ecb0ccd9SWolfgang Denk 279128cb9375SWolfgang Denk If this is defined, the environment variable tftpsrcp 2792ecb0ccd9SWolfgang Denk is used to supply the TFTP UDP source port value. 279328cb9375SWolfgang Denk If tftpsrcp isn't defined, the normal pseudo-random port 2794ecb0ccd9SWolfgang Denk number generator is used. 2795ecb0ccd9SWolfgang Denk 279628cb9375SWolfgang Denk Also, the environment variable tftpdstp is used to supply 279728cb9375SWolfgang Denk the TFTP UDP destination port value. If tftpdstp isn't 279828cb9375SWolfgang Denk defined, the normal port 69 is used. 279928cb9375SWolfgang Denk 280028cb9375SWolfgang Denk The purpose for tftpsrcp is to allow a TFTP server to 2801ecb0ccd9SWolfgang Denk blindly start the TFTP transfer using the pre-configured 2802ecb0ccd9SWolfgang Denk target IP address and UDP port. This has the effect of 2803ecb0ccd9SWolfgang Denk "punching through" the (Windows XP) firewall, allowing 2804ecb0ccd9SWolfgang Denk the remainder of the TFTP transfer to proceed normally. 2805ecb0ccd9SWolfgang Denk A better solution is to properly configure the firewall, 2806ecb0ccd9SWolfgang Denk but sometimes that is not allowed. 2807ecb0ccd9SWolfgang Denk 2808bf36c5d5SSimon Glass- Hashing support: 2809bf36c5d5SSimon Glass CONFIG_CMD_HASH 2810bf36c5d5SSimon Glass 2811bf36c5d5SSimon Glass This enables a generic 'hash' command which can produce 2812bf36c5d5SSimon Glass hashes / digests from a few algorithms (e.g. SHA1, SHA256). 2813bf36c5d5SSimon Glass 2814bf36c5d5SSimon Glass CONFIG_HASH_VERIFY 2815bf36c5d5SSimon Glass 2816bf36c5d5SSimon Glass Enable the hash verify command (hash -v). This adds to code 2817bf36c5d5SSimon Glass size a little. 2818bf36c5d5SSimon Glass 2819bf36c5d5SSimon Glass CONFIG_SHA1 - support SHA1 hashing 2820bf36c5d5SSimon Glass CONFIG_SHA256 - support SHA256 hashing 2821bf36c5d5SSimon Glass 2822bf36c5d5SSimon Glass Note: There is also a sha1sum command, which should perhaps 2823bf36c5d5SSimon Glass be deprecated in favour of 'hash sha1'. 2824bf36c5d5SSimon Glass 2825a11f1873SRobert Winkler- Freescale i.MX specific commands: 2826a11f1873SRobert Winkler CONFIG_CMD_HDMIDETECT 2827a11f1873SRobert Winkler This enables 'hdmidet' command which returns true if an 2828a11f1873SRobert Winkler HDMI monitor is detected. This command is i.MX 6 specific. 2829a11f1873SRobert Winkler 2830a11f1873SRobert Winkler CONFIG_CMD_BMODE 2831a11f1873SRobert Winkler This enables the 'bmode' (bootmode) command for forcing 2832a11f1873SRobert Winkler a boot from specific media. 2833a11f1873SRobert Winkler 2834a11f1873SRobert Winkler This is useful for forcing the ROM's usb downloader to 2835a11f1873SRobert Winkler activate upon a watchdog reset which is nice when iterating 2836a11f1873SRobert Winkler on U-Boot. Using the reset button or running bmode normal 2837a11f1873SRobert Winkler will set it back to normal. This command currently 2838a11f1873SRobert Winkler supports i.MX53 and i.MX6. 2839a11f1873SRobert Winkler 284019c402afSSimon Glass- Signing support: 284119c402afSSimon Glass CONFIG_RSA 284219c402afSSimon Glass 284319c402afSSimon Glass This enables the RSA algorithm used for FIT image verification 284419c402afSSimon Glass in U-Boot. See doc/uImage/signature for more information. 284519c402afSSimon Glass 284619c402afSSimon Glass The signing part is build into mkimage regardless of this 284719c402afSSimon Glass option. 284819c402afSSimon Glass 284919c402afSSimon Glass 2850a8c7c708Swdenk- Show boot progress: 2851c609719bSwdenk CONFIG_SHOW_BOOT_PROGRESS 2852c609719bSwdenk 2853c609719bSwdenk Defining this option allows to add some board- 2854c609719bSwdenk specific code (calling a user-provided function 2855c609719bSwdenk "show_boot_progress(int)") that enables you to show 2856c609719bSwdenk the system's boot progress on some display (for 2857c609719bSwdenk example, some LED's) on your board. At the moment, 2858c609719bSwdenk the following checkpoints are implemented: 2859c609719bSwdenk 28603a608ca0SSimon Glass- Detailed boot stage timing 28613a608ca0SSimon Glass CONFIG_BOOTSTAGE 28623a608ca0SSimon Glass Define this option to get detailed timing of each stage 28633a608ca0SSimon Glass of the boot process. 28643a608ca0SSimon Glass 28653a608ca0SSimon Glass CONFIG_BOOTSTAGE_USER_COUNT 28663a608ca0SSimon Glass This is the number of available user bootstage records. 28673a608ca0SSimon Glass Each time you call bootstage_mark(BOOTSTAGE_ID_ALLOC, ...) 28683a608ca0SSimon Glass a new ID will be allocated from this stash. If you exceed 28693a608ca0SSimon Glass the limit, recording will stop. 28703a608ca0SSimon Glass 28713a608ca0SSimon Glass CONFIG_BOOTSTAGE_REPORT 28723a608ca0SSimon Glass Define this to print a report before boot, similar to this: 28733a608ca0SSimon Glass 28743a608ca0SSimon Glass Timer summary in microseconds: 28753a608ca0SSimon Glass Mark Elapsed Stage 28763a608ca0SSimon Glass 0 0 reset 28773a608ca0SSimon Glass 3,575,678 3,575,678 board_init_f start 28783a608ca0SSimon Glass 3,575,695 17 arch_cpu_init A9 28793a608ca0SSimon Glass 3,575,777 82 arch_cpu_init done 28803a608ca0SSimon Glass 3,659,598 83,821 board_init_r start 28813a608ca0SSimon Glass 3,910,375 250,777 main_loop 28823a608ca0SSimon Glass 29,916,167 26,005,792 bootm_start 28833a608ca0SSimon Glass 30,361,327 445,160 start_kernel 28843a608ca0SSimon Glass 28852eba38cfSSimon Glass CONFIG_CMD_BOOTSTAGE 28862eba38cfSSimon Glass Add a 'bootstage' command which supports printing a report 28872eba38cfSSimon Glass and un/stashing of bootstage data. 28882eba38cfSSimon Glass 288994fd1316SSimon Glass CONFIG_BOOTSTAGE_FDT 289094fd1316SSimon Glass Stash the bootstage information in the FDT. A root 'bootstage' 289194fd1316SSimon Glass node is created with each bootstage id as a child. Each child 289294fd1316SSimon Glass has a 'name' property and either 'mark' containing the 289394fd1316SSimon Glass mark time in microsecond, or 'accum' containing the 289494fd1316SSimon Glass accumulated time for that bootstage id in microseconds. 289594fd1316SSimon Glass For example: 289694fd1316SSimon Glass 289794fd1316SSimon Glass bootstage { 289894fd1316SSimon Glass 154 { 289994fd1316SSimon Glass name = "board_init_f"; 290094fd1316SSimon Glass mark = <3575678>; 290194fd1316SSimon Glass }; 290294fd1316SSimon Glass 170 { 290394fd1316SSimon Glass name = "lcd"; 290494fd1316SSimon Glass accum = <33482>; 290594fd1316SSimon Glass }; 290694fd1316SSimon Glass }; 290794fd1316SSimon Glass 290894fd1316SSimon Glass Code in the Linux kernel can find this in /proc/devicetree. 290994fd1316SSimon Glass 29101372cce2SMarian BalakowiczLegacy uImage format: 29111372cce2SMarian Balakowicz 2912c609719bSwdenk Arg Where When 2913c609719bSwdenk 1 common/cmd_bootm.c before attempting to boot an image 2914c609719bSwdenk -1 common/cmd_bootm.c Image header has bad magic number 2915c609719bSwdenk 2 common/cmd_bootm.c Image header has correct magic number 2916c609719bSwdenk -2 common/cmd_bootm.c Image header has bad checksum 2917c609719bSwdenk 3 common/cmd_bootm.c Image header has correct checksum 2918c609719bSwdenk -3 common/cmd_bootm.c Image data has bad checksum 2919c609719bSwdenk 4 common/cmd_bootm.c Image data has correct checksum 2920c609719bSwdenk -4 common/cmd_bootm.c Image is for unsupported architecture 2921c609719bSwdenk 5 common/cmd_bootm.c Architecture check OK 29221372cce2SMarian Balakowicz -5 common/cmd_bootm.c Wrong Image Type (not kernel, multi) 2923c609719bSwdenk 6 common/cmd_bootm.c Image Type check OK 2924c609719bSwdenk -6 common/cmd_bootm.c gunzip uncompression error 2925c609719bSwdenk -7 common/cmd_bootm.c Unimplemented compression type 2926c609719bSwdenk 7 common/cmd_bootm.c Uncompression OK 29271372cce2SMarian Balakowicz 8 common/cmd_bootm.c No uncompress/copy overwrite error 2928c609719bSwdenk -9 common/cmd_bootm.c Unsupported OS (not Linux, BSD, VxWorks, QNX) 29291372cce2SMarian Balakowicz 29301372cce2SMarian Balakowicz 9 common/image.c Start initial ramdisk verification 29311372cce2SMarian Balakowicz -10 common/image.c Ramdisk header has bad magic number 29321372cce2SMarian Balakowicz -11 common/image.c Ramdisk header has bad checksum 29331372cce2SMarian Balakowicz 10 common/image.c Ramdisk header is OK 29341372cce2SMarian Balakowicz -12 common/image.c Ramdisk data has bad checksum 29351372cce2SMarian Balakowicz 11 common/image.c Ramdisk data has correct checksum 29361372cce2SMarian Balakowicz 12 common/image.c Ramdisk verification complete, start loading 293711ccc33fSMarcel Ziswiler -13 common/image.c Wrong Image Type (not PPC Linux ramdisk) 29381372cce2SMarian Balakowicz 13 common/image.c Start multifile image verification 29391372cce2SMarian Balakowicz 14 common/image.c No initial ramdisk, no multifile, continue. 29401372cce2SMarian Balakowicz 2941ea0364f1SPeter Tyser 15 arch/<arch>/lib/bootm.c All preparation done, transferring control to OS 2942c609719bSwdenk 2943a47a12beSStefan Roese -30 arch/powerpc/lib/board.c Fatal error, hang the system 294463e73c9aSwdenk -31 post/post.c POST test failed, detected by post_output_backlog() 294563e73c9aSwdenk -32 post/post.c POST test failed, detected by post_run_single() 294663e73c9aSwdenk 2947566a494fSHeiko Schocher 34 common/cmd_doc.c before loading a Image from a DOC device 2948566a494fSHeiko Schocher -35 common/cmd_doc.c Bad usage of "doc" command 2949566a494fSHeiko Schocher 35 common/cmd_doc.c correct usage of "doc" command 2950566a494fSHeiko Schocher -36 common/cmd_doc.c No boot device 2951566a494fSHeiko Schocher 36 common/cmd_doc.c correct boot device 2952566a494fSHeiko Schocher -37 common/cmd_doc.c Unknown Chip ID on boot device 2953566a494fSHeiko Schocher 37 common/cmd_doc.c correct chip ID found, device available 2954566a494fSHeiko Schocher -38 common/cmd_doc.c Read Error on boot device 2955566a494fSHeiko Schocher 38 common/cmd_doc.c reading Image header from DOC device OK 2956566a494fSHeiko Schocher -39 common/cmd_doc.c Image header has bad magic number 2957566a494fSHeiko Schocher 39 common/cmd_doc.c Image header has correct magic number 2958566a494fSHeiko Schocher -40 common/cmd_doc.c Error reading Image from DOC device 2959566a494fSHeiko Schocher 40 common/cmd_doc.c Image header has correct magic number 2960566a494fSHeiko Schocher 41 common/cmd_ide.c before loading a Image from a IDE device 2961566a494fSHeiko Schocher -42 common/cmd_ide.c Bad usage of "ide" command 2962566a494fSHeiko Schocher 42 common/cmd_ide.c correct usage of "ide" command 2963566a494fSHeiko Schocher -43 common/cmd_ide.c No boot device 2964566a494fSHeiko Schocher 43 common/cmd_ide.c boot device found 2965566a494fSHeiko Schocher -44 common/cmd_ide.c Device not available 2966566a494fSHeiko Schocher 44 common/cmd_ide.c Device available 2967566a494fSHeiko Schocher -45 common/cmd_ide.c wrong partition selected 2968566a494fSHeiko Schocher 45 common/cmd_ide.c partition selected 2969566a494fSHeiko Schocher -46 common/cmd_ide.c Unknown partition table 2970566a494fSHeiko Schocher 46 common/cmd_ide.c valid partition table found 2971566a494fSHeiko Schocher -47 common/cmd_ide.c Invalid partition type 2972566a494fSHeiko Schocher 47 common/cmd_ide.c correct partition type 2973566a494fSHeiko Schocher -48 common/cmd_ide.c Error reading Image Header on boot device 2974566a494fSHeiko Schocher 48 common/cmd_ide.c reading Image Header from IDE device OK 2975566a494fSHeiko Schocher -49 common/cmd_ide.c Image header has bad magic number 2976566a494fSHeiko Schocher 49 common/cmd_ide.c Image header has correct magic number 2977566a494fSHeiko Schocher -50 common/cmd_ide.c Image header has bad checksum 2978566a494fSHeiko Schocher 50 common/cmd_ide.c Image header has correct checksum 2979566a494fSHeiko Schocher -51 common/cmd_ide.c Error reading Image from IDE device 2980566a494fSHeiko Schocher 51 common/cmd_ide.c reading Image from IDE device OK 2981566a494fSHeiko Schocher 52 common/cmd_nand.c before loading a Image from a NAND device 2982566a494fSHeiko Schocher -53 common/cmd_nand.c Bad usage of "nand" command 2983566a494fSHeiko Schocher 53 common/cmd_nand.c correct usage of "nand" command 2984566a494fSHeiko Schocher -54 common/cmd_nand.c No boot device 2985566a494fSHeiko Schocher 54 common/cmd_nand.c boot device found 2986566a494fSHeiko Schocher -55 common/cmd_nand.c Unknown Chip ID on boot device 2987566a494fSHeiko Schocher 55 common/cmd_nand.c correct chip ID found, device available 2988566a494fSHeiko Schocher -56 common/cmd_nand.c Error reading Image Header on boot device 2989566a494fSHeiko Schocher 56 common/cmd_nand.c reading Image Header from NAND device OK 2990566a494fSHeiko Schocher -57 common/cmd_nand.c Image header has bad magic number 2991566a494fSHeiko Schocher 57 common/cmd_nand.c Image header has correct magic number 2992566a494fSHeiko Schocher -58 common/cmd_nand.c Error reading Image from NAND device 2993566a494fSHeiko Schocher 58 common/cmd_nand.c reading Image from NAND device OK 2994c609719bSwdenk 2995566a494fSHeiko Schocher -60 common/env_common.c Environment has a bad CRC, using default 2996c609719bSwdenk 2997566a494fSHeiko Schocher 64 net/eth.c starting with Ethernet configuration. 2998566a494fSHeiko Schocher -64 net/eth.c no Ethernet found. 2999566a494fSHeiko Schocher 65 net/eth.c Ethernet found. 3000206c60cbSwdenk 3001566a494fSHeiko Schocher -80 common/cmd_net.c usage wrong 3002566a494fSHeiko Schocher 80 common/cmd_net.c before calling NetLoop() 300311ccc33fSMarcel Ziswiler -81 common/cmd_net.c some error in NetLoop() occurred 3004566a494fSHeiko Schocher 81 common/cmd_net.c NetLoop() back without error 3005566a494fSHeiko Schocher -82 common/cmd_net.c size == 0 (File with size 0 loaded) 3006566a494fSHeiko Schocher 82 common/cmd_net.c trying automatic boot 300774de7aefSWolfgang Denk 83 common/cmd_net.c running "source" command 300874de7aefSWolfgang Denk -83 common/cmd_net.c some error in automatic boot or "source" command 3009566a494fSHeiko Schocher 84 common/cmd_net.c end without errors 3010c609719bSwdenk 30111372cce2SMarian BalakowiczFIT uImage format: 30121372cce2SMarian Balakowicz 30131372cce2SMarian Balakowicz Arg Where When 30141372cce2SMarian Balakowicz 100 common/cmd_bootm.c Kernel FIT Image has correct format 30151372cce2SMarian Balakowicz -100 common/cmd_bootm.c Kernel FIT Image has incorrect format 30161372cce2SMarian Balakowicz 101 common/cmd_bootm.c No Kernel subimage unit name, using configuration 30171372cce2SMarian Balakowicz -101 common/cmd_bootm.c Can't get configuration for kernel subimage 30181372cce2SMarian Balakowicz 102 common/cmd_bootm.c Kernel unit name specified 30191372cce2SMarian Balakowicz -103 common/cmd_bootm.c Can't get kernel subimage node offset 3020f773bea8SMarian Balakowicz 103 common/cmd_bootm.c Found configuration node 30211372cce2SMarian Balakowicz 104 common/cmd_bootm.c Got kernel subimage node offset 30221372cce2SMarian Balakowicz -104 common/cmd_bootm.c Kernel subimage hash verification failed 30231372cce2SMarian Balakowicz 105 common/cmd_bootm.c Kernel subimage hash verification OK 30241372cce2SMarian Balakowicz -105 common/cmd_bootm.c Kernel subimage is for unsupported architecture 30251372cce2SMarian Balakowicz 106 common/cmd_bootm.c Architecture check OK 302611ccc33fSMarcel Ziswiler -106 common/cmd_bootm.c Kernel subimage has wrong type 302711ccc33fSMarcel Ziswiler 107 common/cmd_bootm.c Kernel subimage type OK 30281372cce2SMarian Balakowicz -107 common/cmd_bootm.c Can't get kernel subimage data/size 30291372cce2SMarian Balakowicz 108 common/cmd_bootm.c Got kernel subimage data/size 30301372cce2SMarian Balakowicz -108 common/cmd_bootm.c Wrong image type (not legacy, FIT) 30311372cce2SMarian Balakowicz -109 common/cmd_bootm.c Can't get kernel subimage type 30321372cce2SMarian Balakowicz -110 common/cmd_bootm.c Can't get kernel subimage comp 30331372cce2SMarian Balakowicz -111 common/cmd_bootm.c Can't get kernel subimage os 30341372cce2SMarian Balakowicz -112 common/cmd_bootm.c Can't get kernel subimage load address 30351372cce2SMarian Balakowicz -113 common/cmd_bootm.c Image uncompress/copy overwrite error 30361372cce2SMarian Balakowicz 30371372cce2SMarian Balakowicz 120 common/image.c Start initial ramdisk verification 30381372cce2SMarian Balakowicz -120 common/image.c Ramdisk FIT image has incorrect format 30391372cce2SMarian Balakowicz 121 common/image.c Ramdisk FIT image has correct format 304011ccc33fSMarcel Ziswiler 122 common/image.c No ramdisk subimage unit name, using configuration 30411372cce2SMarian Balakowicz -122 common/image.c Can't get configuration for ramdisk subimage 30421372cce2SMarian Balakowicz 123 common/image.c Ramdisk unit name specified 30431372cce2SMarian Balakowicz -124 common/image.c Can't get ramdisk subimage node offset 30441372cce2SMarian Balakowicz 125 common/image.c Got ramdisk subimage node offset 30451372cce2SMarian Balakowicz -125 common/image.c Ramdisk subimage hash verification failed 30461372cce2SMarian Balakowicz 126 common/image.c Ramdisk subimage hash verification OK 30471372cce2SMarian Balakowicz -126 common/image.c Ramdisk subimage for unsupported architecture 30481372cce2SMarian Balakowicz 127 common/image.c Architecture check OK 30491372cce2SMarian Balakowicz -127 common/image.c Can't get ramdisk subimage data/size 30501372cce2SMarian Balakowicz 128 common/image.c Got ramdisk subimage data/size 30511372cce2SMarian Balakowicz 129 common/image.c Can't get ramdisk load address 30521372cce2SMarian Balakowicz -129 common/image.c Got ramdisk load address 30531372cce2SMarian Balakowicz 305411ccc33fSMarcel Ziswiler -130 common/cmd_doc.c Incorrect FIT image format 30551372cce2SMarian Balakowicz 131 common/cmd_doc.c FIT image format OK 30561372cce2SMarian Balakowicz 305711ccc33fSMarcel Ziswiler -140 common/cmd_ide.c Incorrect FIT image format 30581372cce2SMarian Balakowicz 141 common/cmd_ide.c FIT image format OK 30591372cce2SMarian Balakowicz 306011ccc33fSMarcel Ziswiler -150 common/cmd_nand.c Incorrect FIT image format 30611372cce2SMarian Balakowicz 151 common/cmd_nand.c FIT image format OK 30621372cce2SMarian Balakowicz 3063d95f6ec7SGabe Black- FIT image support: 3064d95f6ec7SGabe Black CONFIG_FIT 3065d95f6ec7SGabe Black Enable support for the FIT uImage format. 3066d95f6ec7SGabe Black 3067d95f6ec7SGabe Black CONFIG_FIT_BEST_MATCH 3068d95f6ec7SGabe Black When no configuration is explicitly selected, default to the 3069d95f6ec7SGabe Black one whose fdt's compatibility field best matches that of 3070d95f6ec7SGabe Black U-Boot itself. A match is considered "best" if it matches the 3071d95f6ec7SGabe Black most specific compatibility entry of U-Boot's fdt's root node. 3072d95f6ec7SGabe Black The order of entries in the configuration's fdt is ignored. 3073d95f6ec7SGabe Black 30743e569a6bSSimon Glass CONFIG_FIT_SIGNATURE 30753e569a6bSSimon Glass This option enables signature verification of FIT uImages, 30763e569a6bSSimon Glass using a hash signed and verified using RSA. See 30773e569a6bSSimon Glass doc/uImage.FIT/signature.txt for more details. 30783e569a6bSSimon Glass 30794cf2609bSWolfgang Denk- Standalone program support: 30804cf2609bSWolfgang Denk CONFIG_STANDALONE_LOAD_ADDR 30814cf2609bSWolfgang Denk 30826feff899SWolfgang Denk This option defines a board specific value for the 30836feff899SWolfgang Denk address where standalone program gets loaded, thus 30846feff899SWolfgang Denk overwriting the architecture dependent default 30854cf2609bSWolfgang Denk settings. 30864cf2609bSWolfgang Denk 30874cf2609bSWolfgang Denk- Frame Buffer Address: 30884cf2609bSWolfgang Denk CONFIG_FB_ADDR 30894cf2609bSWolfgang Denk 30904cf2609bSWolfgang Denk Define CONFIG_FB_ADDR if you want to use specific 309144a53b57SWolfgang Denk address for frame buffer. This is typically the case 309244a53b57SWolfgang Denk when using a graphics controller has separate video 309344a53b57SWolfgang Denk memory. U-Boot will then place the frame buffer at 309444a53b57SWolfgang Denk the given address instead of dynamically reserving it 309544a53b57SWolfgang Denk in system RAM by calling lcd_setmem(), which grabs 309644a53b57SWolfgang Denk the memory for the frame buffer depending on the 309744a53b57SWolfgang Denk configured panel size. 30984cf2609bSWolfgang Denk 30994cf2609bSWolfgang Denk Please see board_init_f function. 31004cf2609bSWolfgang Denk 3101cccfc2abSDetlev Zundel- Automatic software updates via TFTP server 3102cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP 3103cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP_CNT_MAX 3104cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP_MSEC_MAX 3105cccfc2abSDetlev Zundel 3106cccfc2abSDetlev Zundel These options enable and control the auto-update feature; 3107cccfc2abSDetlev Zundel for a more detailed description refer to doc/README.update. 3108cccfc2abSDetlev Zundel 3109cccfc2abSDetlev Zundel- MTD Support (mtdparts command, UBI support) 3110cccfc2abSDetlev Zundel CONFIG_MTD_DEVICE 3111cccfc2abSDetlev Zundel 3112cccfc2abSDetlev Zundel Adds the MTD device infrastructure from the Linux kernel. 3113cccfc2abSDetlev Zundel Needed for mtdparts command support. 3114cccfc2abSDetlev Zundel 3115cccfc2abSDetlev Zundel CONFIG_MTD_PARTITIONS 3116cccfc2abSDetlev Zundel 3117cccfc2abSDetlev Zundel Adds the MTD partitioning infrastructure from the Linux 3118cccfc2abSDetlev Zundel kernel. Needed for UBI support. 3119cccfc2abSDetlev Zundel 312070c219cdSJoe Hershberger- UBI support 312170c219cdSJoe Hershberger CONFIG_CMD_UBI 312270c219cdSJoe Hershberger 312370c219cdSJoe Hershberger Adds commands for interacting with MTD partitions formatted 312470c219cdSJoe Hershberger with the UBI flash translation layer 312570c219cdSJoe Hershberger 312670c219cdSJoe Hershberger Requires also defining CONFIG_RBTREE 312770c219cdSJoe Hershberger 3128147162daSJoe Hershberger CONFIG_UBI_SILENCE_MSG 3129147162daSJoe Hershberger 3130147162daSJoe Hershberger Make the verbose messages from UBI stop printing. This leaves 3131147162daSJoe Hershberger warnings and errors enabled. 3132147162daSJoe Hershberger 313370c219cdSJoe Hershberger- UBIFS support 313470c219cdSJoe Hershberger CONFIG_CMD_UBIFS 313570c219cdSJoe Hershberger 313670c219cdSJoe Hershberger Adds commands for interacting with UBI volumes formatted as 313770c219cdSJoe Hershberger UBIFS. UBIFS is read-only in u-boot. 313870c219cdSJoe Hershberger 313970c219cdSJoe Hershberger Requires UBI support as well as CONFIG_LZO 314070c219cdSJoe Hershberger 3141147162daSJoe Hershberger CONFIG_UBIFS_SILENCE_MSG 3142147162daSJoe Hershberger 3143147162daSJoe Hershberger Make the verbose messages from UBIFS stop printing. This leaves 3144147162daSJoe Hershberger warnings and errors enabled. 3145147162daSJoe Hershberger 31466a11cf48SDaniel Schwierzeck- SPL framework 31476a11cf48SDaniel Schwierzeck CONFIG_SPL 31486a11cf48SDaniel Schwierzeck Enable building of SPL globally. 31496a11cf48SDaniel Schwierzeck 315095579793STom Rini CONFIG_SPL_LDSCRIPT 315195579793STom Rini LDSCRIPT for linking the SPL binary. 315295579793STom Rini 31536ebc3461SAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT 31546ebc3461SAlbert ARIBAUD Maximum size in memory allocated to the SPL, BSS included. 31556ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual memory 31566ebc3461SAlbert ARIBAUD used by SPL from _start to __bss_end does not exceed it. 31578960af8bSAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE 31586ebc3461SAlbert ARIBAUD must not be both defined at the same time. 31596ebc3461SAlbert ARIBAUD 316095579793STom Rini CONFIG_SPL_MAX_SIZE 31616ebc3461SAlbert ARIBAUD Maximum size of the SPL image (text, data, rodata, and 31626ebc3461SAlbert ARIBAUD linker lists sections), BSS excluded. 31636ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual size does 31646ebc3461SAlbert ARIBAUD not exceed it. 316595579793STom Rini 31666a11cf48SDaniel Schwierzeck CONFIG_SPL_TEXT_BASE 31676a11cf48SDaniel Schwierzeck TEXT_BASE for linking the SPL binary. 31686a11cf48SDaniel Schwierzeck 316994a45bb1SScott Wood CONFIG_SPL_RELOC_TEXT_BASE 317094a45bb1SScott Wood Address to relocate to. If unspecified, this is equal to 317194a45bb1SScott Wood CONFIG_SPL_TEXT_BASE (i.e. no relocation is done). 317294a45bb1SScott Wood 317395579793STom Rini CONFIG_SPL_BSS_START_ADDR 317495579793STom Rini Link address for the BSS within the SPL binary. 317595579793STom Rini 317695579793STom Rini CONFIG_SPL_BSS_MAX_SIZE 31776ebc3461SAlbert ARIBAUD Maximum size in memory allocated to the SPL BSS. 31786ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual memory used 31796ebc3461SAlbert ARIBAUD by SPL from __bss_start to __bss_end does not exceed it. 31808960af8bSAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE 31816ebc3461SAlbert ARIBAUD must not be both defined at the same time. 318295579793STom Rini 318395579793STom Rini CONFIG_SPL_STACK 318495579793STom Rini Adress of the start of the stack SPL will use 318595579793STom Rini 318694a45bb1SScott Wood CONFIG_SPL_RELOC_STACK 318794a45bb1SScott Wood Adress of the start of the stack SPL will use after 318894a45bb1SScott Wood relocation. If unspecified, this is equal to 318994a45bb1SScott Wood CONFIG_SPL_STACK. 319094a45bb1SScott Wood 319195579793STom Rini CONFIG_SYS_SPL_MALLOC_START 319295579793STom Rini Starting address of the malloc pool used in SPL. 319395579793STom Rini 319495579793STom Rini CONFIG_SYS_SPL_MALLOC_SIZE 319595579793STom Rini The size of the malloc pool used in SPL. 31966a11cf48SDaniel Schwierzeck 319747f7bcaeSTom Rini CONFIG_SPL_FRAMEWORK 319847f7bcaeSTom Rini Enable the SPL framework under common/. This framework 319947f7bcaeSTom Rini supports MMC, NAND and YMODEM loading of U-Boot and NAND 320047f7bcaeSTom Rini NAND loading of the Linux Kernel. 320147f7bcaeSTom Rini 3202861a86f4STom Rini CONFIG_SPL_DISPLAY_PRINT 3203861a86f4STom Rini For ARM, enable an optional function to print more information 3204861a86f4STom Rini about the running system. 3205861a86f4STom Rini 32064b919725SScott Wood CONFIG_SPL_INIT_MINIMAL 32074b919725SScott Wood Arch init code should be built for a very small image 32084b919725SScott Wood 32096a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBCOMMON_SUPPORT 32106a11cf48SDaniel Schwierzeck Support for common/libcommon.o in SPL binary 32116a11cf48SDaniel Schwierzeck 32126a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBDISK_SUPPORT 32136a11cf48SDaniel Schwierzeck Support for disk/libdisk.o in SPL binary 32146a11cf48SDaniel Schwierzeck 32156a11cf48SDaniel Schwierzeck CONFIG_SPL_I2C_SUPPORT 32166a11cf48SDaniel Schwierzeck Support for drivers/i2c/libi2c.o in SPL binary 32176a11cf48SDaniel Schwierzeck 32186a11cf48SDaniel Schwierzeck CONFIG_SPL_GPIO_SUPPORT 32196a11cf48SDaniel Schwierzeck Support for drivers/gpio/libgpio.o in SPL binary 32206a11cf48SDaniel Schwierzeck 32216a11cf48SDaniel Schwierzeck CONFIG_SPL_MMC_SUPPORT 32226a11cf48SDaniel Schwierzeck Support for drivers/mmc/libmmc.o in SPL binary 32236a11cf48SDaniel Schwierzeck 322495579793STom Rini CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR, 322595579793STom Rini CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS, 322695579793STom Rini CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION 322795579793STom Rini Address, size and partition on the MMC to load U-Boot from 322895579793STom Rini when the MMC is being used in raw mode. 322995579793STom Rini 32302b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 32312b75b0adSPeter Korsgaard Sector to load kernel uImage from when MMC is being 32322b75b0adSPeter Korsgaard used in raw mode (for Falcon mode) 32332b75b0adSPeter Korsgaard 32342b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR, 32352b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS 32362b75b0adSPeter Korsgaard Sector and number of sectors to load kernel argument 32372b75b0adSPeter Korsgaard parameters from when MMC is being used in raw mode 32382b75b0adSPeter Korsgaard (for falcon mode) 32392b75b0adSPeter Korsgaard 324095579793STom Rini CONFIG_SPL_FAT_SUPPORT 324195579793STom Rini Support for fs/fat/libfat.o in SPL binary 324295579793STom Rini 324395579793STom Rini CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME 324495579793STom Rini Filename to read to load U-Boot when reading from FAT 324595579793STom Rini 32467ad2cc79SPeter Korsgaard CONFIG_SPL_FAT_LOAD_KERNEL_NAME 32477ad2cc79SPeter Korsgaard Filename to read to load kernel uImage when reading 32487ad2cc79SPeter Korsgaard from FAT (for Falcon mode) 32497ad2cc79SPeter Korsgaard 32507ad2cc79SPeter Korsgaard CONFIG_SPL_FAT_LOAD_ARGS_NAME 32517ad2cc79SPeter Korsgaard Filename to read to load kernel argument parameters 32527ad2cc79SPeter Korsgaard when reading from FAT (for Falcon mode) 32537ad2cc79SPeter Korsgaard 325406f60ae3SScott Wood CONFIG_SPL_MPC83XX_WAIT_FOR_NAND 325506f60ae3SScott Wood Set this for NAND SPL on PPC mpc83xx targets, so that 325606f60ae3SScott Wood start.S waits for the rest of the SPL to load before 325706f60ae3SScott Wood continuing (the hardware starts execution after just 325806f60ae3SScott Wood loading the first page rather than the full 4K). 325906f60ae3SScott Wood 32606f2f01b9SScott Wood CONFIG_SPL_NAND_BASE 32616f2f01b9SScott Wood Include nand_base.c in the SPL. Requires 32626f2f01b9SScott Wood CONFIG_SPL_NAND_DRIVERS. 32636f2f01b9SScott Wood 32646f2f01b9SScott Wood CONFIG_SPL_NAND_DRIVERS 32656f2f01b9SScott Wood SPL uses normal NAND drivers, not minimal drivers. 32666f2f01b9SScott Wood 32676f2f01b9SScott Wood CONFIG_SPL_NAND_ECC 32686f2f01b9SScott Wood Include standard software ECC in the SPL 32696f2f01b9SScott Wood 327095579793STom Rini CONFIG_SPL_NAND_SIMPLE 32717d4b7955SScott Wood Support for NAND boot using simple NAND drivers that 32727d4b7955SScott Wood expose the cmd_ctrl() interface. 327395579793STom Rini 3274bb0dc108SYing Zhang CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT 3275bb0dc108SYing Zhang Set for the SPL on PPC mpc8xxx targets, support for 32765614e71bSYork Sun drivers/ddr/fsl/libddr.o in SPL binary. 3277bb0dc108SYing Zhang 32787c8eea59SYing Zhang CONFIG_SPL_COMMON_INIT_DDR 32797c8eea59SYing Zhang Set for common ddr init with serial presence detect in 32807c8eea59SYing Zhang SPL binary. 32817c8eea59SYing Zhang 328295579793STom Rini CONFIG_SYS_NAND_5_ADDR_CYCLE, CONFIG_SYS_NAND_PAGE_COUNT, 328395579793STom Rini CONFIG_SYS_NAND_PAGE_SIZE, CONFIG_SYS_NAND_OOBSIZE, 328495579793STom Rini CONFIG_SYS_NAND_BLOCK_SIZE, CONFIG_SYS_NAND_BAD_BLOCK_POS, 328595579793STom Rini CONFIG_SYS_NAND_ECCPOS, CONFIG_SYS_NAND_ECCSIZE, 328695579793STom Rini CONFIG_SYS_NAND_ECCBYTES 328795579793STom Rini Defines the size and behavior of the NAND that SPL uses 32887d4b7955SScott Wood to read U-Boot 328995579793STom Rini 3290fbe76ae4SPrabhakar Kushwaha CONFIG_SPL_NAND_BOOT 3291fbe76ae4SPrabhakar Kushwaha Add support NAND boot 3292fbe76ae4SPrabhakar Kushwaha 329395579793STom Rini CONFIG_SYS_NAND_U_BOOT_OFFS 32947d4b7955SScott Wood Location in NAND to read U-Boot from 32957d4b7955SScott Wood 32967d4b7955SScott Wood CONFIG_SYS_NAND_U_BOOT_DST 32977d4b7955SScott Wood Location in memory to load U-Boot to 32987d4b7955SScott Wood 32997d4b7955SScott Wood CONFIG_SYS_NAND_U_BOOT_SIZE 33007d4b7955SScott Wood Size of image to load 330195579793STom Rini 330295579793STom Rini CONFIG_SYS_NAND_U_BOOT_START 33037d4b7955SScott Wood Entry point in loaded image to jump to 330495579793STom Rini 330595579793STom Rini CONFIG_SYS_NAND_HW_ECC_OOBFIRST 330695579793STom Rini Define this if you need to first read the OOB and then the 330795579793STom Rini data. This is used for example on davinci plattforms. 330895579793STom Rini 330995579793STom Rini CONFIG_SPL_OMAP3_ID_NAND 331095579793STom Rini Support for an OMAP3-specific set of functions to return the 331195579793STom Rini ID and MFR of the first attached NAND chip, if present. 331295579793STom Rini 33136a11cf48SDaniel Schwierzeck CONFIG_SPL_SERIAL_SUPPORT 33146a11cf48SDaniel Schwierzeck Support for drivers/serial/libserial.o in SPL binary 33156a11cf48SDaniel Schwierzeck 33166a11cf48SDaniel Schwierzeck CONFIG_SPL_SPI_FLASH_SUPPORT 33176a11cf48SDaniel Schwierzeck Support for drivers/mtd/spi/libspi_flash.o in SPL binary 33186a11cf48SDaniel Schwierzeck 33196a11cf48SDaniel Schwierzeck CONFIG_SPL_SPI_SUPPORT 33206a11cf48SDaniel Schwierzeck Support for drivers/spi/libspi.o in SPL binary 33216a11cf48SDaniel Schwierzeck 3322c57b953dSPavel Machek CONFIG_SPL_RAM_DEVICE 3323c57b953dSPavel Machek Support for running image already present in ram, in SPL binary 3324c57b953dSPavel Machek 33256a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBGENERIC_SUPPORT 33266a11cf48SDaniel Schwierzeck Support for lib/libgeneric.o in SPL binary 33271372cce2SMarian Balakowicz 3328ba1bee43SYing Zhang CONFIG_SPL_ENV_SUPPORT 3329ba1bee43SYing Zhang Support for the environment operating in SPL binary 3330ba1bee43SYing Zhang 3331ba1bee43SYing Zhang CONFIG_SPL_NET_SUPPORT 3332ba1bee43SYing Zhang Support for the net/libnet.o in SPL binary. 3333ba1bee43SYing Zhang It conflicts with SPL env from storage medium specified by 3334ba1bee43SYing Zhang CONFIG_ENV_IS_xxx but CONFIG_ENV_IS_NOWHERE 3335ba1bee43SYing Zhang 333674752baaSScott Wood CONFIG_SPL_PAD_TO 33376113d3f2SBenoît Thébaudeau Image offset to which the SPL should be padded before appending 33386113d3f2SBenoît Thébaudeau the SPL payload. By default, this is defined as 33396113d3f2SBenoît Thébaudeau CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined. 33406113d3f2SBenoît Thébaudeau CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL 33416113d3f2SBenoît Thébaudeau payload without any padding, or >= CONFIG_SPL_MAX_SIZE. 334274752baaSScott Wood 3343ca2fca22SScott Wood CONFIG_SPL_TARGET 3344ca2fca22SScott Wood Final target image containing SPL and payload. Some SPLs 3345ca2fca22SScott Wood use an arch-specific makefile fragment instead, for 3346ca2fca22SScott Wood example if more than one image needs to be produced. 3347ca2fca22SScott Wood 334887ebee39SSimon Glass CONFIG_FIT_SPL_PRINT 334987ebee39SSimon Glass Printing information about a FIT image adds quite a bit of 335087ebee39SSimon Glass code to SPL. So this is normally disabled in SPL. Use this 335187ebee39SSimon Glass option to re-enable it. This will affect the output of the 335287ebee39SSimon Glass bootm command when booting a FIT image. 335387ebee39SSimon Glass 33543aa29de0SYing Zhang- TPL framework 33553aa29de0SYing Zhang CONFIG_TPL 33563aa29de0SYing Zhang Enable building of TPL globally. 33573aa29de0SYing Zhang 33583aa29de0SYing Zhang CONFIG_TPL_PAD_TO 33593aa29de0SYing Zhang Image offset to which the TPL should be padded before appending 33603aa29de0SYing Zhang the TPL payload. By default, this is defined as 33613aa29de0SYing Zhang CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined. 33623aa29de0SYing Zhang CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL 33633aa29de0SYing Zhang payload without any padding, or >= CONFIG_SPL_MAX_SIZE. 33643aa29de0SYing Zhang 3365c609719bSwdenkModem Support: 3366c609719bSwdenk-------------- 3367c609719bSwdenk 3368566e5cf4SWolfgang Denk[so far only for SMDK2400 boards] 3369c609719bSwdenk 337011ccc33fSMarcel Ziswiler- Modem support enable: 3371c609719bSwdenk CONFIG_MODEM_SUPPORT 3372c609719bSwdenk 3373c609719bSwdenk- RTS/CTS Flow control enable: 3374c609719bSwdenk CONFIG_HWFLOW 3375c609719bSwdenk 3376c609719bSwdenk- Modem debug support: 3377c609719bSwdenk CONFIG_MODEM_SUPPORT_DEBUG 3378c609719bSwdenk 3379c609719bSwdenk Enables debugging stuff (char screen[1024], dbg()) 3380c609719bSwdenk for modem support. Useful only with BDI2000. 3381c609719bSwdenk 3382a8c7c708Swdenk- Interrupt support (PPC): 3383a8c7c708Swdenk 3384a8c7c708Swdenk There are common interrupt_init() and timer_interrupt() 3385a8c7c708Swdenk for all PPC archs. interrupt_init() calls interrupt_init_cpu() 338611ccc33fSMarcel Ziswiler for CPU specific initialization. interrupt_init_cpu() 3387a8c7c708Swdenk should set decrementer_count to appropriate value. If 338811ccc33fSMarcel Ziswiler CPU resets decrementer automatically after interrupt 3389a8c7c708Swdenk (ppc4xx) it should set decrementer_count to zero. 339011ccc33fSMarcel Ziswiler timer_interrupt() calls timer_interrupt_cpu() for CPU 3391a8c7c708Swdenk specific handling. If board has watchdog / status_led 3392a8c7c708Swdenk / other_activity_monitor it works automatically from 3393a8c7c708Swdenk general timer_interrupt(). 3394a8c7c708Swdenk 3395c609719bSwdenk- General: 3396c609719bSwdenk 3397c609719bSwdenk In the target system modem support is enabled when a 3398c609719bSwdenk specific key (key combination) is pressed during 3399c609719bSwdenk power-on. Otherwise U-Boot will boot normally 340011ccc33fSMarcel Ziswiler (autoboot). The key_pressed() function is called from 3401c609719bSwdenk board_init(). Currently key_pressed() is a dummy 3402c609719bSwdenk function, returning 1 and thus enabling modem 3403c609719bSwdenk initialization. 3404c609719bSwdenk 3405c609719bSwdenk If there are no modem init strings in the 3406c609719bSwdenk environment, U-Boot proceed to autoboot; the 3407c609719bSwdenk previous output (banner, info printfs) will be 340811ccc33fSMarcel Ziswiler suppressed, though. 3409c609719bSwdenk 3410c609719bSwdenk See also: doc/README.Modem 3411c609719bSwdenk 34129660e442SHelmut RaigerBoard initialization settings: 34139660e442SHelmut Raiger------------------------------ 34149660e442SHelmut Raiger 34159660e442SHelmut RaigerDuring Initialization u-boot calls a number of board specific functions 34169660e442SHelmut Raigerto allow the preparation of board specific prerequisites, e.g. pin setup 34179660e442SHelmut Raigerbefore drivers are initialized. To enable these callbacks the 34189660e442SHelmut Raigerfollowing configuration macros have to be defined. Currently this is 34199660e442SHelmut Raigerarchitecture specific, so please check arch/your_architecture/lib/board.c 34209660e442SHelmut Raigertypically in board_init_f() and board_init_r(). 34219660e442SHelmut Raiger 34229660e442SHelmut Raiger- CONFIG_BOARD_EARLY_INIT_F: Call board_early_init_f() 34239660e442SHelmut Raiger- CONFIG_BOARD_EARLY_INIT_R: Call board_early_init_r() 34249660e442SHelmut Raiger- CONFIG_BOARD_LATE_INIT: Call board_late_init() 34259660e442SHelmut Raiger- CONFIG_BOARD_POSTCLK_INIT: Call board_postclk_init() 3426c609719bSwdenk 3427c609719bSwdenkConfiguration Settings: 3428c609719bSwdenk----------------------- 3429c609719bSwdenk 34306d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_LONGHELP: Defined when you want long help messages included; 3431c609719bSwdenk undefine this when you're short of memory. 3432c609719bSwdenk 34332fb2604dSPeter Tyser- CONFIG_SYS_HELP_CMD_WIDTH: Defined when you want to override the default 34342fb2604dSPeter Tyser width of the commands listed in the 'help' command output. 34352fb2604dSPeter Tyser 34366d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PROMPT: This is what U-Boot prints on the console to 3437c609719bSwdenk prompt for user input. 3438c609719bSwdenk 34396d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CBSIZE: Buffer size for input from the Console 3440c609719bSwdenk 34416d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PBSIZE: Buffer size for Console output 3442c609719bSwdenk 34436d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAXARGS: max. Number of arguments accepted for monitor commands 3444c609719bSwdenk 34456d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BARGSIZE: Buffer size for Boot Arguments which are passed to 3446c609719bSwdenk the application (usually a Linux kernel) when it is 3447c609719bSwdenk booted 3448c609719bSwdenk 34496d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BAUDRATE_TABLE: 3450c609719bSwdenk List of legal baudrate settings for this board. 3451c609719bSwdenk 34526d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_INFO_QUIET 3453c609719bSwdenk Suppress display of console information at boot. 3454c609719bSwdenk 34556d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_IS_IN_ENV 3456c609719bSwdenk If the board specific function 3457c609719bSwdenk extern int overwrite_console (void); 3458c609719bSwdenk returns 1, the stdin, stderr and stdout are switched to the 3459c609719bSwdenk serial port, else the settings in the environment are used. 3460c609719bSwdenk 34616d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE 3462c609719bSwdenk Enable the call to overwrite_console(). 3463c609719bSwdenk 34646d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_ENV_OVERWRITE 3465c609719bSwdenk Enable overwrite of previous console environment settings. 3466c609719bSwdenk 34676d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEMTEST_START, CONFIG_SYS_MEMTEST_END: 3468c609719bSwdenk Begin and End addresses of the area used by the 3469c609719bSwdenk simple memory test. 3470c609719bSwdenk 34716d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_ALT_MEMTEST: 3472c609719bSwdenk Enable an alternate, more extensive memory test. 3473c609719bSwdenk 34746d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEMTEST_SCRATCH: 34755f535fe1Swdenk Scratch address used by the alternate memory test 34765f535fe1Swdenk You only need to set this if address zero isn't writeable 34775f535fe1Swdenk 34786d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEM_TOP_HIDE (PPC only): 34796d0f6bcfSJean-Christophe PLAGNIOL-VILLARD If CONFIG_SYS_MEM_TOP_HIDE is defined in the board config header, 348014f73ca6SStefan Roese this specified memory area will get subtracted from the top 348111ccc33fSMarcel Ziswiler (end) of RAM and won't get "touched" at all by U-Boot. By 348214f73ca6SStefan Roese fixing up gd->ram_size the Linux kernel should gets passed 348314f73ca6SStefan Roese the now "corrected" memory size and won't touch it either. 348414f73ca6SStefan Roese This should work for arch/ppc and arch/powerpc. Only Linux 34855e12e75dSStefan Roese board ports in arch/powerpc with bootwrapper support that 348614f73ca6SStefan Roese recalculate the memory size from the SDRAM controller setup 34875e12e75dSStefan Roese will have to get fixed in Linux additionally. 348814f73ca6SStefan Roese 348914f73ca6SStefan Roese This option can be used as a workaround for the 440EPx/GRx 349014f73ca6SStefan Roese CHIP 11 errata where the last 256 bytes in SDRAM shouldn't 349114f73ca6SStefan Roese be touched. 349214f73ca6SStefan Roese 349314f73ca6SStefan Roese WARNING: Please make sure that this value is a multiple of 349414f73ca6SStefan Roese the Linux page size (normally 4k). If this is not the case, 349514f73ca6SStefan Roese then the end address of the Linux memory will be located at a 349614f73ca6SStefan Roese non page size aligned address and this could cause major 349714f73ca6SStefan Roese problems. 349814f73ca6SStefan Roese 34996d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_LOADS_BAUD_CHANGE: 3500c609719bSwdenk Enable temporary baudrate change while serial download 3501c609719bSwdenk 35026d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SDRAM_BASE: 3503c609719bSwdenk Physical start address of SDRAM. _Must_ be 0 here. 3504c609719bSwdenk 35056d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MBIO_BASE: 3506c609719bSwdenk Physical start address of Motherboard I/O (if using a 3507c609719bSwdenk Cogent motherboard) 3508c609719bSwdenk 35096d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_BASE: 3510c609719bSwdenk Physical start address of Flash memory. 3511c609719bSwdenk 35126d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MONITOR_BASE: 3513c609719bSwdenk Physical start address of boot monitor code (set by 3514c609719bSwdenk make config files to be same as the text base address 351514d0a02aSWolfgang Denk (CONFIG_SYS_TEXT_BASE) used when linking) - same as 35166d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FLASH_BASE when booting from flash. 3517c609719bSwdenk 35186d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MONITOR_LEN: 35193b57fe0aSwdenk Size of memory reserved for monitor code, used to 35203b57fe0aSwdenk determine _at_compile_time_ (!) if the environment is 35213b57fe0aSwdenk embedded within the U-Boot image, or in a separate 35223b57fe0aSwdenk flash sector. 3523c609719bSwdenk 35246d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MALLOC_LEN: 3525c609719bSwdenk Size of DRAM reserved for malloc() use. 3526c609719bSwdenk 35276d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BOOTM_LEN: 352815940c9aSStefan Roese Normally compressed uImages are limited to an 352915940c9aSStefan Roese uncompressed size of 8 MBytes. If this is not enough, 35306d0f6bcfSJean-Christophe PLAGNIOL-VILLARD you can define CONFIG_SYS_BOOTM_LEN in your board config file 353115940c9aSStefan Roese to adjust this setting to your needs. 3532c609719bSwdenk 35336d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BOOTMAPSZ: 3534c609719bSwdenk Maximum size of memory mapped by the startup code of 3535c609719bSwdenk the Linux kernel; all data that must be processed by 35367d721e34SBartlomiej Sieka the Linux kernel (bd_info, boot arguments, FDT blob if 35377d721e34SBartlomiej Sieka used) must be put below this limit, unless "bootm_low" 35381bce2aebSRobert P. J. Day environment variable is defined and non-zero. In such case 35397d721e34SBartlomiej Sieka all data for the Linux kernel must be between "bootm_low" 3540c3624e6eSGrant Likely and "bootm_low" + CONFIG_SYS_BOOTMAPSZ. The environment 3541c3624e6eSGrant Likely variable "bootm_mapsize" will override the value of 3542c3624e6eSGrant Likely CONFIG_SYS_BOOTMAPSZ. If CONFIG_SYS_BOOTMAPSZ is undefined, 3543c3624e6eSGrant Likely then the value in "bootm_size" will be used instead. 3544c609719bSwdenk 3545fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_RAMDISK_HIGH: 3546fca43cc8SJohn Rigby Enable initrd_high functionality. If defined then the 3547fca43cc8SJohn Rigby initrd_high feature is enabled and the bootm ramdisk subcommand 3548fca43cc8SJohn Rigby is enabled. 3549fca43cc8SJohn Rigby 3550fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_GET_CMDLINE: 3551fca43cc8SJohn Rigby Enables allocating and saving kernel cmdline in space between 3552fca43cc8SJohn Rigby "bootm_low" and "bootm_low" + BOOTMAPSZ. 3553fca43cc8SJohn Rigby 3554fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_GET_KBD: 3555fca43cc8SJohn Rigby Enables allocating and saving a kernel copy of the bd_info in 3556fca43cc8SJohn Rigby space between "bootm_low" and "bootm_low" + BOOTMAPSZ. 3557fca43cc8SJohn Rigby 35586d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAX_FLASH_BANKS: 3559c609719bSwdenk Max number of Flash memory banks 3560c609719bSwdenk 35616d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAX_FLASH_SECT: 3562c609719bSwdenk Max number of sectors on a Flash chip 3563c609719bSwdenk 35646d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_ERASE_TOUT: 3565c609719bSwdenk Timeout for Flash erase operations (in ms) 3566c609719bSwdenk 35676d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_WRITE_TOUT: 3568c609719bSwdenk Timeout for Flash write operations (in ms) 3569c609719bSwdenk 35706d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_LOCK_TOUT 35718564acf9Swdenk Timeout for Flash set sector lock bit operation (in ms) 35728564acf9Swdenk 35736d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_UNLOCK_TOUT 35748564acf9Swdenk Timeout for Flash clear lock bits operation (in ms) 35758564acf9Swdenk 35766d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_PROTECTION 35778564acf9Swdenk If defined, hardware flash sectors protection is used 35788564acf9Swdenk instead of U-Boot software protection. 35798564acf9Swdenk 35806d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DIRECT_FLASH_TFTP: 3581c609719bSwdenk 3582c609719bSwdenk Enable TFTP transfers directly to flash memory; 3583c609719bSwdenk without this option such a download has to be 3584c609719bSwdenk performed in two steps: (1) download to RAM, and (2) 3585c609719bSwdenk copy from RAM to flash. 3586c609719bSwdenk 3587c609719bSwdenk The two-step approach is usually more reliable, since 3588c609719bSwdenk you can check if the download worked before you erase 358911ccc33fSMarcel Ziswiler the flash, but in some situations (when system RAM is 359011ccc33fSMarcel Ziswiler too limited to allow for a temporary copy of the 3591c609719bSwdenk downloaded image) this option may be very useful. 3592c609719bSwdenk 35936d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_CFI: 3594c609719bSwdenk Define if the flash driver uses extra elements in the 35955653fc33Swdenk common flash structure for storing flash geometry. 35965653fc33Swdenk 359700b1883aSJean-Christophe PLAGNIOL-VILLARD- CONFIG_FLASH_CFI_DRIVER 35985653fc33Swdenk This option also enables the building of the cfi_flash driver 35995653fc33Swdenk in the drivers directory 360053cf9435Sstroese 360191809ed5SPiotr Ziecik- CONFIG_FLASH_CFI_MTD 360291809ed5SPiotr Ziecik This option enables the building of the cfi_mtd driver 360391809ed5SPiotr Ziecik in the drivers directory. The driver exports CFI flash 360491809ed5SPiotr Ziecik to the MTD layer. 360591809ed5SPiotr Ziecik 36066d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_USE_BUFFER_WRITE 360796ef831fSGuennadi Liakhovetski Use buffered writes to flash. 360896ef831fSGuennadi Liakhovetski 360996ef831fSGuennadi Liakhovetski- CONFIG_FLASH_SPANSION_S29WS_N 361096ef831fSGuennadi Liakhovetski s29ws-n MirrorBit flash has non-standard addresses for buffered 361196ef831fSGuennadi Liakhovetski write commands. 361296ef831fSGuennadi Liakhovetski 36136d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_QUIET_TEST 36145568e613SStefan Roese If this option is defined, the common CFI flash doesn't 36155568e613SStefan Roese print it's warning upon not recognized FLASH banks. This 36165568e613SStefan Roese is useful, if some of the configured banks are only 36175568e613SStefan Roese optionally available. 36185568e613SStefan Roese 36199a042e9cSJerry Van Baren- CONFIG_FLASH_SHOW_PROGRESS 36209a042e9cSJerry Van Baren If defined (must be an integer), print out countdown 36219a042e9cSJerry Van Baren digits and dots. Recommended value: 45 (9..1) for 80 36229a042e9cSJerry Van Baren column displays, 15 (3..1) for 40 column displays. 36239a042e9cSJerry Van Baren 3624352ef3f1SStefan Roese- CONFIG_FLASH_VERIFY 3625352ef3f1SStefan Roese If defined, the content of the flash (destination) is compared 3626352ef3f1SStefan Roese against the source after the write operation. An error message 3627352ef3f1SStefan Roese will be printed when the contents are not identical. 3628352ef3f1SStefan Roese Please note that this option is useless in nearly all cases, 3629352ef3f1SStefan Roese since such flash programming errors usually are detected earlier 3630352ef3f1SStefan Roese while unprotecting/erasing/programming. Please only enable 3631352ef3f1SStefan Roese this option if you really know what you are doing. 3632352ef3f1SStefan Roese 36336d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_RX_ETH_BUFFER: 363411ccc33fSMarcel Ziswiler Defines the number of Ethernet receive buffers. On some 363511ccc33fSMarcel Ziswiler Ethernet controllers it is recommended to set this value 363653cf9435Sstroese to 8 or even higher (EEPRO100 or 405 EMAC), since all 363753cf9435Sstroese buffers can be full shortly after enabling the interface 363811ccc33fSMarcel Ziswiler on high Ethernet traffic. 363953cf9435Sstroese Defaults to 4 if not defined. 3640c609719bSwdenk 3641ea882bafSWolfgang Denk- CONFIG_ENV_MAX_ENTRIES 3642ea882bafSWolfgang Denk 3643ea882bafSWolfgang Denk Maximum number of entries in the hash table that is used 3644ea882bafSWolfgang Denk internally to store the environment settings. The default 3645ea882bafSWolfgang Denk setting is supposed to be generous and should work in most 3646ea882bafSWolfgang Denk cases. This setting can be used to tune behaviour; see 3647ea882bafSWolfgang Denk lib/hashtable.c for details. 3648ea882bafSWolfgang Denk 36492598090bSJoe Hershberger- CONFIG_ENV_FLAGS_LIST_DEFAULT 36502598090bSJoe Hershberger- CONFIG_ENV_FLAGS_LIST_STATIC 36511bce2aebSRobert P. J. Day Enable validation of the values given to environment variables when 36522598090bSJoe Hershberger calling env set. Variables can be restricted to only decimal, 36532598090bSJoe Hershberger hexadecimal, or boolean. If CONFIG_CMD_NET is also defined, 36542598090bSJoe Hershberger the variables can also be restricted to IP address or MAC address. 36552598090bSJoe Hershberger 36562598090bSJoe Hershberger The format of the list is: 36572598090bSJoe Hershberger type_attribute = [s|d|x|b|i|m] 3658267541f7SJoe Hershberger access_atribute = [a|r|o|c] 3659267541f7SJoe Hershberger attributes = type_attribute[access_atribute] 36602598090bSJoe Hershberger entry = variable_name[:attributes] 36612598090bSJoe Hershberger list = entry[,list] 36622598090bSJoe Hershberger 36632598090bSJoe Hershberger The type attributes are: 36642598090bSJoe Hershberger s - String (default) 36652598090bSJoe Hershberger d - Decimal 36662598090bSJoe Hershberger x - Hexadecimal 36672598090bSJoe Hershberger b - Boolean ([1yYtT|0nNfF]) 36682598090bSJoe Hershberger i - IP address 36692598090bSJoe Hershberger m - MAC address 36702598090bSJoe Hershberger 3671267541f7SJoe Hershberger The access attributes are: 3672267541f7SJoe Hershberger a - Any (default) 3673267541f7SJoe Hershberger r - Read-only 3674267541f7SJoe Hershberger o - Write-once 3675267541f7SJoe Hershberger c - Change-default 3676267541f7SJoe Hershberger 36772598090bSJoe Hershberger - CONFIG_ENV_FLAGS_LIST_DEFAULT 36782598090bSJoe Hershberger Define this to a list (string) to define the ".flags" 36792598090bSJoe Hershberger envirnoment variable in the default or embedded environment. 36802598090bSJoe Hershberger 36812598090bSJoe Hershberger - CONFIG_ENV_FLAGS_LIST_STATIC 36822598090bSJoe Hershberger Define this to a list (string) to define validation that 36832598090bSJoe Hershberger should be done if an entry is not found in the ".flags" 36842598090bSJoe Hershberger environment variable. To override a setting in the static 36852598090bSJoe Hershberger list, simply add an entry for the same variable name to the 36862598090bSJoe Hershberger ".flags" variable. 36872598090bSJoe Hershberger 3688267541f7SJoe Hershberger- CONFIG_ENV_ACCESS_IGNORE_FORCE 3689267541f7SJoe Hershberger If defined, don't allow the -f switch to env set override variable 3690267541f7SJoe Hershberger access flags. 3691267541f7SJoe Hershberger 36925c1a7ea6SSimon Glass- CONFIG_SYS_GENERIC_BOARD 36935c1a7ea6SSimon Glass This selects the architecture-generic board system instead of the 36945c1a7ea6SSimon Glass architecture-specific board files. It is intended to move boards 36955c1a7ea6SSimon Glass to this new framework over time. Defining this will disable the 36965c1a7ea6SSimon Glass arch/foo/lib/board.c file and use common/board_f.c and 36975c1a7ea6SSimon Glass common/board_r.c instead. To use this option your architecture 36985c1a7ea6SSimon Glass must support it (i.e. must define __HAVE_ARCH_GENERIC_BOARD in 36995c1a7ea6SSimon Glass its config.mk file). If you find problems enabling this option on 37005c1a7ea6SSimon Glass your board please report the problem and send patches! 37015c1a7ea6SSimon Glass 3702632efa74SSimon Glass- CONFIG_SYS_SYM_OFFSETS 3703632efa74SSimon Glass This is set by architectures that use offsets for link symbols 3704632efa74SSimon Glass instead of absolute values. So bss_start is obtained using an 3705632efa74SSimon Glass offset _bss_start_ofs from CONFIG_SYS_TEXT_BASE, rather than 3706632efa74SSimon Glass directly. You should not need to touch this setting. 3707632efa74SSimon Glass 37080b1b60c7SLokesh Vutla- CONFIG_OMAP_PLATFORM_RESET_TIME_MAX_USEC (OMAP only) 37090b1b60c7SLokesh Vutla This is set by OMAP boards for the max time that reset should 37100b1b60c7SLokesh Vutla be asserted. See doc/README.omap-reset-time for details on how 37110b1b60c7SLokesh Vutla the value can be calulated on a given board. 3712632efa74SSimon Glass 3713c609719bSwdenkThe following definitions that deal with the placement and management 3714c609719bSwdenkof environment data (variable area); in general, we support the 3715c609719bSwdenkfollowing configurations: 3716c609719bSwdenk 3717c3eb3fe4SMike Frysinger- CONFIG_BUILD_ENVCRC: 3718c3eb3fe4SMike Frysinger 3719c3eb3fe4SMike Frysinger Builds up envcrc with the target environment so that external utils 3720c3eb3fe4SMike Frysinger may easily extract it and embed it in final U-Boot images. 3721c3eb3fe4SMike Frysinger 37225a1aceb0SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_FLASH: 3723c609719bSwdenk 3724c609719bSwdenk Define this if the environment is in flash memory. 3725c609719bSwdenk 3726c609719bSwdenk a) The environment occupies one whole flash sector, which is 3727c609719bSwdenk "embedded" in the text segment with the U-Boot code. This 3728c609719bSwdenk happens usually with "bottom boot sector" or "top boot 3729c609719bSwdenk sector" type flash chips, which have several smaller 3730c609719bSwdenk sectors at the start or the end. For instance, such a 3731c609719bSwdenk layout can have sector sizes of 8, 2x4, 16, Nx32 kB. In 3732c609719bSwdenk such a case you would place the environment in one of the 3733c609719bSwdenk 4 kB sectors - with U-Boot code before and after it. With 3734c609719bSwdenk "top boot sector" type flash chips, you would put the 3735c609719bSwdenk environment in one of the last sectors, leaving a gap 3736c609719bSwdenk between U-Boot and the environment. 3737c609719bSwdenk 37380e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 3739c609719bSwdenk 3740c609719bSwdenk Offset of environment data (variable area) to the 3741c609719bSwdenk beginning of flash memory; for instance, with bottom boot 3742c609719bSwdenk type flash chips the second sector can be used: the offset 3743c609719bSwdenk for this sector is given here. 3744c609719bSwdenk 37456d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_OFFSET is used relative to CONFIG_SYS_FLASH_BASE. 3746c609719bSwdenk 37470e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 3748c609719bSwdenk 3749c609719bSwdenk This is just another way to specify the start address of 3750c609719bSwdenk the flash sector containing the environment (instead of 37510e8d1586SJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_OFFSET). 3752c609719bSwdenk 37530e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SECT_SIZE: 3754c609719bSwdenk 3755c609719bSwdenk Size of the sector containing the environment. 3756c609719bSwdenk 3757c609719bSwdenk 3758c609719bSwdenk b) Sometimes flash chips have few, equal sized, BIG sectors. 3759c609719bSwdenk In such a case you don't want to spend a whole sector for 3760c609719bSwdenk the environment. 3761c609719bSwdenk 37620e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 3763c609719bSwdenk 37645a1aceb0SJean-Christophe PLAGNIOL-VILLARD If you use this in combination with CONFIG_ENV_IS_IN_FLASH 37650e8d1586SJean-Christophe PLAGNIOL-VILLARD and CONFIG_ENV_SECT_SIZE, you can specify to use only a part 3766c609719bSwdenk of this flash sector for the environment. This saves 3767c609719bSwdenk memory for the RAM copy of the environment. 3768c609719bSwdenk 3769c609719bSwdenk It may also save flash memory if you decide to use this 3770c609719bSwdenk when your environment is "embedded" within U-Boot code, 3771c609719bSwdenk since then the remainder of the flash sector could be used 3772c609719bSwdenk for U-Boot code. It should be pointed out that this is 3773c609719bSwdenk STRONGLY DISCOURAGED from a robustness point of view: 3774c609719bSwdenk updating the environment in flash makes it always 3775c609719bSwdenk necessary to erase the WHOLE sector. If something goes 3776c609719bSwdenk wrong before the contents has been restored from a copy in 3777c609719bSwdenk RAM, your target system will be dead. 3778c609719bSwdenk 37790e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR_REDUND 37800e8d1586SJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_SIZE_REDUND 3781c609719bSwdenk 3782c609719bSwdenk These settings describe a second storage area used to hold 378311ccc33fSMarcel Ziswiler a redundant copy of the environment data, so that there is 37843e38691eSwdenk a valid backup copy in case there is a power failure during 3785c609719bSwdenk a "saveenv" operation. 3786c609719bSwdenk 3787c609719bSwdenkBE CAREFUL! Any changes to the flash layout, and some changes to the 3788c609719bSwdenksource code will make it necessary to adapt <board>/u-boot.lds* 3789c609719bSwdenkaccordingly! 3790c609719bSwdenk 3791c609719bSwdenk 37929314cee6SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_NVRAM: 3793c609719bSwdenk 3794c609719bSwdenk Define this if you have some non-volatile memory device 3795c609719bSwdenk (NVRAM, battery buffered SRAM) which you want to use for the 3796c609719bSwdenk environment. 3797c609719bSwdenk 37980e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 37990e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 3800c609719bSwdenk 380111ccc33fSMarcel Ziswiler These two #defines are used to determine the memory area you 3802c609719bSwdenk want to use for environment. It is assumed that this memory 3803c609719bSwdenk can just be read and written to, without any special 3804c609719bSwdenk provision. 3805c609719bSwdenk 3806c609719bSwdenkBE CAREFUL! The first access to the environment happens quite early 3807c609719bSwdenkin U-Boot initalization (when we try to get the setting of for the 380811ccc33fSMarcel Ziswilerconsole baudrate). You *MUST* have mapped your NVRAM area then, or 3809c609719bSwdenkU-Boot will hang. 3810c609719bSwdenk 3811c609719bSwdenkPlease note that even with NVRAM we still use a copy of the 3812c609719bSwdenkenvironment in RAM: we could work on NVRAM directly, but we want to 3813c609719bSwdenkkeep settings there always unmodified except somebody uses "saveenv" 3814c609719bSwdenkto save the current settings. 3815c609719bSwdenk 3816c609719bSwdenk 3817bb1f8b4fSJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_EEPROM: 3818c609719bSwdenk 3819c609719bSwdenk Use this if you have an EEPROM or similar serial access 3820c609719bSwdenk device and a driver for it. 3821c609719bSwdenk 38220e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 38230e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 3824c609719bSwdenk 3825c609719bSwdenk These two #defines specify the offset and size of the 3826c609719bSwdenk environment area within the total memory of your EEPROM. 3827c609719bSwdenk 38286d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR: 3829c609719bSwdenk If defined, specified the chip address of the EEPROM device. 3830c609719bSwdenk The default address is zero. 3831c609719bSwdenk 38326d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_PAGE_WRITE_BITS: 3833c609719bSwdenk If defined, the number of bits used to address bytes in a 3834c609719bSwdenk single page in the EEPROM device. A 64 byte page, for example 3835c609719bSwdenk would require six bits. 3836c609719bSwdenk 38376d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS: 3838c609719bSwdenk If defined, the number of milliseconds to delay between 3839c609719bSwdenk page writes. The default is zero milliseconds. 3840c609719bSwdenk 38416d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR_LEN: 3842c609719bSwdenk The length in bytes of the EEPROM memory array address. Note 3843c609719bSwdenk that this is NOT the chip address length! 3844c609719bSwdenk 38456d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW: 38465cf91d6bSwdenk EEPROM chips that implement "address overflow" are ones 38475cf91d6bSwdenk like Catalyst 24WC04/08/16 which has 9/10/11 bits of 38485cf91d6bSwdenk address and the extra bits end up in the "chip address" bit 38495cf91d6bSwdenk slots. This makes a 24WC08 (1Kbyte) chip look like four 256 38505cf91d6bSwdenk byte chips. 38515cf91d6bSwdenk 38525cf91d6bSwdenk Note that we consider the length of the address field to 38535cf91d6bSwdenk still be one byte because the extra address bits are hidden 38545cf91d6bSwdenk in the chip address. 38555cf91d6bSwdenk 38566d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_SIZE: 3857c609719bSwdenk The size in bytes of the EEPROM device. 3858c609719bSwdenk 3859548738b4SHeiko Schocher - CONFIG_ENV_EEPROM_IS_ON_I2C 3860548738b4SHeiko Schocher define this, if you have I2C and SPI activated, and your 3861548738b4SHeiko Schocher EEPROM, which holds the environment, is on the I2C bus. 3862548738b4SHeiko Schocher 3863548738b4SHeiko Schocher - CONFIG_I2C_ENV_EEPROM_BUS 3864548738b4SHeiko Schocher if you have an Environment on an EEPROM reached over 3865548738b4SHeiko Schocher I2C muxes, you can define here, how to reach this 3866548738b4SHeiko Schocher EEPROM. For example: 3867548738b4SHeiko Schocher 3868ea818dbbSHeiko Schocher #define CONFIG_I2C_ENV_EEPROM_BUS 1 3869548738b4SHeiko Schocher 3870548738b4SHeiko Schocher EEPROM which holds the environment, is reached over 3871548738b4SHeiko Schocher a pca9547 i2c mux with address 0x70, channel 3. 3872c609719bSwdenk 3873057c849cSJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_DATAFLASH: 38745779d8d9Swdenk 38755779d8d9Swdenk Define this if you have a DataFlash memory device which you 38765779d8d9Swdenk want to use for the environment. 38775779d8d9Swdenk 38780e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 38790e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 38800e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 38815779d8d9Swdenk 38825779d8d9Swdenk These three #defines specify the offset and size of the 38835779d8d9Swdenk environment area within the total memory of your DataFlash placed 38845779d8d9Swdenk at the specified address. 38855779d8d9Swdenk 38860a85a9e7SLiu Gang- CONFIG_ENV_IS_IN_REMOTE: 38870a85a9e7SLiu Gang 38880a85a9e7SLiu Gang Define this if you have a remote memory space which you 38890a85a9e7SLiu Gang want to use for the local device's environment. 38900a85a9e7SLiu Gang 38910a85a9e7SLiu Gang - CONFIG_ENV_ADDR: 38920a85a9e7SLiu Gang - CONFIG_ENV_SIZE: 38930a85a9e7SLiu Gang 38940a85a9e7SLiu Gang These two #defines specify the address and size of the 38950a85a9e7SLiu Gang environment area within the remote memory space. The 38960a85a9e7SLiu Gang local device can get the environment from remote memory 3897fc54c7faSLiu Gang space by SRIO or PCIE links. 38980a85a9e7SLiu Gang 38990a85a9e7SLiu GangBE CAREFUL! For some special cases, the local device can not use 39000a85a9e7SLiu Gang"saveenv" command. For example, the local device will get the 3901fc54c7faSLiu Gangenvironment stored in a remote NOR flash by SRIO or PCIE link, 3902fc54c7faSLiu Gangbut it can not erase, write this NOR flash by SRIO or PCIE interface. 39030a85a9e7SLiu Gang 390451bfee19SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_NAND: 390513a5695bSwdenk 390613a5695bSwdenk Define this if you have a NAND device which you want to use 390713a5695bSwdenk for the environment. 390813a5695bSwdenk 39090e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 39100e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 391113a5695bSwdenk 391213a5695bSwdenk These two #defines specify the offset and size of the environment 3913fdd813deSScott Wood area within the first NAND device. CONFIG_ENV_OFFSET must be 3914fdd813deSScott Wood aligned to an erase block boundary. 39155779d8d9Swdenk 3916fdd813deSScott Wood - CONFIG_ENV_OFFSET_REDUND (optional): 3917e443c944SMarkus Klotzbuecher 39180e8d1586SJean-Christophe PLAGNIOL-VILLARD This setting describes a second storage area of CONFIG_ENV_SIZE 3919fdd813deSScott Wood size used to hold a redundant copy of the environment data, so 3920fdd813deSScott Wood that there is a valid backup copy in case there is a power failure 3921fdd813deSScott Wood during a "saveenv" operation. CONFIG_ENV_OFFSET_RENDUND must be 3922fdd813deSScott Wood aligned to an erase block boundary. 3923e443c944SMarkus Klotzbuecher 3924fdd813deSScott Wood - CONFIG_ENV_RANGE (optional): 3925fdd813deSScott Wood 3926fdd813deSScott Wood Specifies the length of the region in which the environment 3927fdd813deSScott Wood can be written. This should be a multiple of the NAND device's 3928fdd813deSScott Wood block size. Specifying a range with more erase blocks than 3929fdd813deSScott Wood are needed to hold CONFIG_ENV_SIZE allows bad blocks within 3930fdd813deSScott Wood the range to be avoided. 3931fdd813deSScott Wood 3932fdd813deSScott Wood - CONFIG_ENV_OFFSET_OOB (optional): 3933fdd813deSScott Wood 3934fdd813deSScott Wood Enables support for dynamically retrieving the offset of the 3935fdd813deSScott Wood environment from block zero's out-of-band data. The 3936fdd813deSScott Wood "nand env.oob" command can be used to record this offset. 3937fdd813deSScott Wood Currently, CONFIG_ENV_OFFSET_REDUND is not supported when 3938fdd813deSScott Wood using CONFIG_ENV_OFFSET_OOB. 3939e443c944SMarkus Klotzbuecher 3940b74ab737SGuennadi Liakhovetski- CONFIG_NAND_ENV_DST 3941b74ab737SGuennadi Liakhovetski 3942b74ab737SGuennadi Liakhovetski Defines address in RAM to which the nand_spl code should copy the 3943b74ab737SGuennadi Liakhovetski environment. If redundant environment is used, it will be copied to 3944b74ab737SGuennadi Liakhovetski CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE. 3945b74ab737SGuennadi Liakhovetski 39462b74433fSJoe Hershberger- CONFIG_ENV_IS_IN_UBI: 39472b74433fSJoe Hershberger 39482b74433fSJoe Hershberger Define this if you have an UBI volume that you want to use for the 39492b74433fSJoe Hershberger environment. This has the benefit of wear-leveling the environment 39502b74433fSJoe Hershberger accesses, which is important on NAND. 39512b74433fSJoe Hershberger 39522b74433fSJoe Hershberger - CONFIG_ENV_UBI_PART: 39532b74433fSJoe Hershberger 39542b74433fSJoe Hershberger Define this to a string that is the mtd partition containing the UBI. 39552b74433fSJoe Hershberger 39562b74433fSJoe Hershberger - CONFIG_ENV_UBI_VOLUME: 39572b74433fSJoe Hershberger 39582b74433fSJoe Hershberger Define this to the name of the volume that you want to store the 39592b74433fSJoe Hershberger environment in. 39602b74433fSJoe Hershberger 3961785881f7SJoe Hershberger - CONFIG_ENV_UBI_VOLUME_REDUND: 3962785881f7SJoe Hershberger 3963785881f7SJoe Hershberger Define this to the name of another volume to store a second copy of 3964785881f7SJoe Hershberger the environment in. This will enable redundant environments in UBI. 3965785881f7SJoe Hershberger It is assumed that both volumes are in the same MTD partition. 3966785881f7SJoe Hershberger 39672b74433fSJoe Hershberger - CONFIG_UBI_SILENCE_MSG 39682b74433fSJoe Hershberger - CONFIG_UBIFS_SILENCE_MSG 39692b74433fSJoe Hershberger 39702b74433fSJoe Hershberger You will probably want to define these to avoid a really noisy system 39712b74433fSJoe Hershberger when storing the env in UBI. 39722b74433fSJoe Hershberger 397306e4ae5fSStephen Warren- CONFIG_ENV_IS_IN_MMC: 397406e4ae5fSStephen Warren 397506e4ae5fSStephen Warren Define this if you have an MMC device which you want to use for the 397606e4ae5fSStephen Warren environment. 397706e4ae5fSStephen Warren 397806e4ae5fSStephen Warren - CONFIG_SYS_MMC_ENV_DEV: 397906e4ae5fSStephen Warren 398006e4ae5fSStephen Warren Specifies which MMC device the environment is stored in. 398106e4ae5fSStephen Warren 398206e4ae5fSStephen Warren - CONFIG_SYS_MMC_ENV_PART (optional): 398306e4ae5fSStephen Warren 398406e4ae5fSStephen Warren Specifies which MMC partition the environment is stored in. If not 398506e4ae5fSStephen Warren set, defaults to partition 0, the user area. Common values might be 398606e4ae5fSStephen Warren 1 (first MMC boot partition), 2 (second MMC boot partition). 398706e4ae5fSStephen Warren 398806e4ae5fSStephen Warren - CONFIG_ENV_OFFSET: 398906e4ae5fSStephen Warren - CONFIG_ENV_SIZE: 399006e4ae5fSStephen Warren 399106e4ae5fSStephen Warren These two #defines specify the offset and size of the environment 399206e4ae5fSStephen Warren area within the specified MMC device. 399306e4ae5fSStephen Warren 39945c088ee8SStephen Warren If offset is positive (the usual case), it is treated as relative to 39955c088ee8SStephen Warren the start of the MMC partition. If offset is negative, it is treated 39965c088ee8SStephen Warren as relative to the end of the MMC partition. This can be useful if 39975c088ee8SStephen Warren your board may be fitted with different MMC devices, which have 39985c088ee8SStephen Warren different sizes for the MMC partitions, and you always want the 39995c088ee8SStephen Warren environment placed at the very end of the partition, to leave the 40005c088ee8SStephen Warren maximum possible space before it, to store other data. 40015c088ee8SStephen Warren 400206e4ae5fSStephen Warren These two values are in units of bytes, but must be aligned to an 400306e4ae5fSStephen Warren MMC sector boundary. 400406e4ae5fSStephen Warren 400506e4ae5fSStephen Warren - CONFIG_ENV_OFFSET_REDUND (optional): 400606e4ae5fSStephen Warren 400706e4ae5fSStephen Warren Specifies a second storage area, of CONFIG_ENV_SIZE size, used to 400806e4ae5fSStephen Warren hold a redundant copy of the environment data. This provides a 400906e4ae5fSStephen Warren valid backup copy in case the other copy is corrupted, e.g. due 401006e4ae5fSStephen Warren to a power failure during a "saveenv" operation. 401106e4ae5fSStephen Warren 40125c088ee8SStephen Warren This value may also be positive or negative; this is handled in the 40135c088ee8SStephen Warren same way as CONFIG_ENV_OFFSET. 40145c088ee8SStephen Warren 401506e4ae5fSStephen Warren This value is also in units of bytes, but must also be aligned to 401606e4ae5fSStephen Warren an MMC sector boundary. 401706e4ae5fSStephen Warren 401806e4ae5fSStephen Warren - CONFIG_ENV_SIZE_REDUND (optional): 401906e4ae5fSStephen Warren 402006e4ae5fSStephen Warren This value need not be set, even when CONFIG_ENV_OFFSET_REDUND is 402106e4ae5fSStephen Warren set. If this value is set, it must be set to the same value as 402206e4ae5fSStephen Warren CONFIG_ENV_SIZE. 402306e4ae5fSStephen Warren 40246d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPI_INIT_OFFSET 4025c609719bSwdenk 4026c609719bSwdenk Defines offset to the initial SPI buffer area in DPRAM. The 4027c609719bSwdenk area is used at an early stage (ROM part) if the environment 4028c609719bSwdenk is configured to reside in the SPI EEPROM: We need a 520 byte 4029c609719bSwdenk scratch DPRAM area. It is used between the two initialization 4030c609719bSwdenk calls (spi_init_f() and spi_init_r()). A value of 0xB00 seems 4031c609719bSwdenk to be a good choice since it makes it far enough from the 4032c609719bSwdenk start of the data area as well as from the stack pointer. 4033c609719bSwdenk 4034e881cb56SBruce AdlerPlease note that the environment is read-only until the monitor 4035c609719bSwdenkhas been relocated to RAM and a RAM copy of the environment has been 4036cdb74977SWolfgang Denkcreated; also, when using EEPROM you will have to use getenv_f() 4037c609719bSwdenkuntil then to read environment variables. 4038c609719bSwdenk 403985ec0bccSwdenkThe environment is protected by a CRC32 checksum. Before the monitor 404085ec0bccSwdenkis relocated into RAM, as a result of a bad CRC you will be working 404185ec0bccSwdenkwith the compiled-in default environment - *silently*!!! [This is 404285ec0bccSwdenknecessary, because the first environment variable we need is the 404385ec0bccSwdenk"baudrate" setting for the console - if we have a bad CRC, we don't 404485ec0bccSwdenkhave any device yet where we could complain.] 4045c609719bSwdenk 4046c609719bSwdenkNote: once the monitor has been relocated, then it will complain if 4047c609719bSwdenkthe default environment is used; a new CRC is computed as soon as you 404885ec0bccSwdenkuse the "saveenv" command to store a valid environment. 4049c609719bSwdenk 40506d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FAULT_ECHO_LINK_DOWN: 4051fc3e2165Swdenk Echo the inverted Ethernet link state to the fault LED. 4052fc3e2165Swdenk 40536d0f6bcfSJean-Christophe PLAGNIOL-VILLARD Note: If this option is active, then CONFIG_SYS_FAULT_MII_ADDR 4054fc3e2165Swdenk also needs to be defined. 4055fc3e2165Swdenk 40566d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FAULT_MII_ADDR: 4057fc3e2165Swdenk MII address of the PHY to check for the Ethernet link state. 4058c609719bSwdenk 4059f5675aa5SRon Madrid- CONFIG_NS16550_MIN_FUNCTIONS: 4060f5675aa5SRon Madrid Define this if you desire to only have use of the NS16550_init 4061f5675aa5SRon Madrid and NS16550_putc functions for the serial driver located at 4062f5675aa5SRon Madrid drivers/serial/ns16550.c. This option is useful for saving 4063f5675aa5SRon Madrid space for already greatly restricted images, including but not 4064f5675aa5SRon Madrid limited to NAND_SPL configurations. 4065f5675aa5SRon Madrid 4066b2b92f53SSimon Glass- CONFIG_DISPLAY_BOARDINFO 4067b2b92f53SSimon Glass Display information about the board that U-Boot is running on 4068b2b92f53SSimon Glass when U-Boot starts up. The board function checkboard() is called 4069b2b92f53SSimon Glass to do this. 4070b2b92f53SSimon Glass 4071e2e3e2b1SSimon Glass- CONFIG_DISPLAY_BOARDINFO_LATE 4072e2e3e2b1SSimon Glass Similar to the previous option, but display this information 4073e2e3e2b1SSimon Glass later, once stdio is running and output goes to the LCD, if 4074e2e3e2b1SSimon Glass present. 4075e2e3e2b1SSimon Glass 4076c609719bSwdenkLow Level (hardware related) configuration options: 4077dc7c9a1aSwdenk--------------------------------------------------- 4078c609719bSwdenk 40796d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CACHELINE_SIZE: 4080c609719bSwdenk Cache Line Size of the CPU. 4081c609719bSwdenk 40826d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DEFAULT_IMMR: 4083c609719bSwdenk Default address of the IMMR after system reset. 40842535d602Swdenk 40852535d602Swdenk Needed on some 8260 systems (MPC8260ADS, PQ2FADS-ZU, 40862535d602Swdenk and RPXsuper) to be able to adjust the position of 40872535d602Swdenk the IMMR register after a reset. 4088c609719bSwdenk 4089e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_DEFAULT: 4090e46fedfeSTimur Tabi Default (power-on reset) physical address of CCSR on Freescale 4091e46fedfeSTimur Tabi PowerPC SOCs. 4092e46fedfeSTimur Tabi 4093e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR: 4094e46fedfeSTimur Tabi Virtual address of CCSR. On a 32-bit build, this is typically 4095e46fedfeSTimur Tabi the same value as CONFIG_SYS_CCSRBAR_DEFAULT. 4096e46fedfeSTimur Tabi 4097e46fedfeSTimur Tabi CONFIG_SYS_DEFAULT_IMMR must also be set to this value, 4098e46fedfeSTimur Tabi for cross-platform code that uses that macro instead. 4099e46fedfeSTimur Tabi 4100e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS: 4101e46fedfeSTimur Tabi Physical address of CCSR. CCSR can be relocated to a new 4102e46fedfeSTimur Tabi physical address, if desired. In this case, this macro should 4103e46fedfeSTimur Tabi be set to that address. Otherwise, it should be set to the 4104e46fedfeSTimur Tabi same value as CONFIG_SYS_CCSRBAR_DEFAULT. For example, CCSR 4105e46fedfeSTimur Tabi is typically relocated on 36-bit builds. It is recommended 4106e46fedfeSTimur Tabi that this macro be defined via the _HIGH and _LOW macros: 4107e46fedfeSTimur Tabi 4108e46fedfeSTimur Tabi #define CONFIG_SYS_CCSRBAR_PHYS ((CONFIG_SYS_CCSRBAR_PHYS_HIGH 4109e46fedfeSTimur Tabi * 1ull) << 32 | CONFIG_SYS_CCSRBAR_PHYS_LOW) 4110e46fedfeSTimur Tabi 4111e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS_HIGH: 4112e46fedfeSTimur Tabi Bits 33-36 of CONFIG_SYS_CCSRBAR_PHYS. This value is typically 4113e46fedfeSTimur Tabi either 0 (32-bit build) or 0xF (36-bit build). This macro is 4114e46fedfeSTimur Tabi used in assembly code, so it must not contain typecasts or 4115e46fedfeSTimur Tabi integer size suffixes (e.g. "ULL"). 4116e46fedfeSTimur Tabi 4117e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS_LOW: 4118e46fedfeSTimur Tabi Lower 32-bits of CONFIG_SYS_CCSRBAR_PHYS. This macro is 4119e46fedfeSTimur Tabi used in assembly code, so it must not contain typecasts or 4120e46fedfeSTimur Tabi integer size suffixes (e.g. "ULL"). 4121e46fedfeSTimur Tabi 4122e46fedfeSTimur Tabi- CONFIG_SYS_CCSR_DO_NOT_RELOCATE: 4123e46fedfeSTimur Tabi If this macro is defined, then CONFIG_SYS_CCSRBAR_PHYS will be 4124e46fedfeSTimur Tabi forced to a value that ensures that CCSR is not relocated. 4125e46fedfeSTimur Tabi 41267f6c2cbcSwdenk- Floppy Disk Support: 41276d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FDC_DRIVE_NUMBER 41287f6c2cbcSwdenk 41297f6c2cbcSwdenk the default drive number (default value 0) 41307f6c2cbcSwdenk 41316d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_ISA_IO_STRIDE 41327f6c2cbcSwdenk 413311ccc33fSMarcel Ziswiler defines the spacing between FDC chipset registers 41347f6c2cbcSwdenk (default value 1) 41357f6c2cbcSwdenk 41366d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_ISA_IO_OFFSET 41377f6c2cbcSwdenk 41387f6c2cbcSwdenk defines the offset of register from address. It 41397f6c2cbcSwdenk depends on which part of the data bus is connected to 414011ccc33fSMarcel Ziswiler the FDC chipset. (default value 0) 41417f6c2cbcSwdenk 41426d0f6bcfSJean-Christophe PLAGNIOL-VILLARD If CONFIG_SYS_ISA_IO_STRIDE CONFIG_SYS_ISA_IO_OFFSET and 41436d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FDC_DRIVE_NUMBER are undefined, they take their 41447f6c2cbcSwdenk default value. 41457f6c2cbcSwdenk 41466d0f6bcfSJean-Christophe PLAGNIOL-VILLARD if CONFIG_SYS_FDC_HW_INIT is defined, then the function 41477f6c2cbcSwdenk fdc_hw_init() is called at the beginning of the FDC 41487f6c2cbcSwdenk setup. fdc_hw_init() must be provided by the board 41497f6c2cbcSwdenk source code. It is used to make hardware dependant 41507f6c2cbcSwdenk initializations. 41517f6c2cbcSwdenk 41520abddf82SMacpaul Lin- CONFIG_IDE_AHB: 41530abddf82SMacpaul Lin Most IDE controllers were designed to be connected with PCI 41540abddf82SMacpaul Lin interface. Only few of them were designed for AHB interface. 41550abddf82SMacpaul Lin When software is doing ATA command and data transfer to 41560abddf82SMacpaul Lin IDE devices through IDE-AHB controller, some additional 41570abddf82SMacpaul Lin registers accessing to these kind of IDE-AHB controller 41580abddf82SMacpaul Lin is requierd. 41590abddf82SMacpaul Lin 41606d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_IMMR: Physical address of the Internal Memory. 416125d6712aSwdenk DO NOT CHANGE unless you know exactly what you're 416225d6712aSwdenk doing! (11-4) [MPC8xx/82xx systems only] 4163c609719bSwdenk 41646d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_INIT_RAM_ADDR: 4165c609719bSwdenk 41667152b1d0Swdenk Start address of memory area that can be used for 4167c609719bSwdenk initial data and stack; please note that this must be 4168c609719bSwdenk writable memory that is working WITHOUT special 4169c609719bSwdenk initialization, i. e. you CANNOT use normal RAM which 4170c609719bSwdenk will become available only after programming the 4171c609719bSwdenk memory controller and running certain initialization 4172c609719bSwdenk sequences. 4173c609719bSwdenk 4174c609719bSwdenk U-Boot uses the following memory types: 4175c609719bSwdenk - MPC8xx and MPC8260: IMMR (internal memory of the CPU) 4176c609719bSwdenk - MPC824X: data cache 4177c609719bSwdenk - PPC4xx: data cache 4178c609719bSwdenk 41796d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_GBL_DATA_OFFSET: 4180c609719bSwdenk 4181c609719bSwdenk Offset of the initial data structure in the memory 41826d0f6bcfSJean-Christophe PLAGNIOL-VILLARD area defined by CONFIG_SYS_INIT_RAM_ADDR. Usually 41836d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_GBL_DATA_OFFSET is chosen such that the initial 4184c609719bSwdenk data is located at the end of the available space 4185553f0982SWolfgang Denk (sometimes written as (CONFIG_SYS_INIT_RAM_SIZE - 41866d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_DATA_SIZE), and the initial stack is just 41876d0f6bcfSJean-Christophe PLAGNIOL-VILLARD below that area (growing from (CONFIG_SYS_INIT_RAM_ADDR + 41886d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_GBL_DATA_OFFSET) downward. 4189c609719bSwdenk 4190c609719bSwdenk Note: 4191c609719bSwdenk On the MPC824X (or other systems that use the data 4192c609719bSwdenk cache for initial memory) the address chosen for 41936d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_RAM_ADDR is basically arbitrary - it must 4194c609719bSwdenk point to an otherwise UNUSED address space between 4195c609719bSwdenk the top of RAM and the start of the PCI space. 4196c609719bSwdenk 41976d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SIUMCR: SIU Module Configuration (11-6) 4198c609719bSwdenk 41996d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SYPCR: System Protection Control (11-9) 4200c609719bSwdenk 42016d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_TBSCR: Time Base Status and Control (11-26) 4202c609719bSwdenk 42036d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PISCR: Periodic Interrupt Status and Control (11-31) 4204c609719bSwdenk 42056d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PLPRCR: PLL, Low-Power, and Reset Control Register (15-30) 4206c609719bSwdenk 42076d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SCCR: System Clock and reset Control Register (15-27) 4208c609719bSwdenk 42096d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_OR_TIMING_SDRAM: 4210c609719bSwdenk SDRAM timing 4211c609719bSwdenk 42126d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAMR_PTA: 4213c609719bSwdenk periodic timer for refresh 4214c609719bSwdenk 42156d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DER: Debug Event Register (37-47) 4216c609719bSwdenk 42176d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- FLASH_BASE0_PRELIM, FLASH_BASE1_PRELIM, CONFIG_SYS_REMAP_OR_AM, 42186d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PRELIM_OR_AM, CONFIG_SYS_OR_TIMING_FLASH, CONFIG_SYS_OR0_REMAP, 42196d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR0_PRELIM, CONFIG_SYS_BR0_PRELIM, CONFIG_SYS_OR1_REMAP, CONFIG_SYS_OR1_PRELIM, 42206d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BR1_PRELIM: 4221c609719bSwdenk Memory Controller Definitions: BR0/1 and OR0/1 (FLASH) 4222c609719bSwdenk 4223c609719bSwdenk- SDRAM_BASE2_PRELIM, SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE, 42246d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR_TIMING_SDRAM, CONFIG_SYS_OR2_PRELIM, CONFIG_SYS_BR2_PRELIM, 42256d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR3_PRELIM, CONFIG_SYS_BR3_PRELIM: 4226c609719bSwdenk Memory Controller Definitions: BR2/3 and OR2/3 (SDRAM) 4227c609719bSwdenk 42286d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAMR_PTA, CONFIG_SYS_MPTPR_2BK_4K, CONFIG_SYS_MPTPR_1BK_4K, CONFIG_SYS_MPTPR_2BK_8K, 42296d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MPTPR_1BK_8K, CONFIG_SYS_MAMR_8COL, CONFIG_SYS_MAMR_9COL: 4230c609719bSwdenk Machine Mode Register and Memory Periodic Timer 4231c609719bSwdenk Prescaler definitions (SDRAM timing) 4232c609719bSwdenk 42336d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_I2C_UCODE_PATCH, CONFIG_SYS_I2C_DPMEM_OFFSET [0x1FC0]: 4234c609719bSwdenk enable I2C microcode relocation patch (MPC8xx); 4235c609719bSwdenk define relocation offset in DPRAM [DSP2] 4236c609719bSwdenk 42376d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SMC_UCODE_PATCH, CONFIG_SYS_SMC_DPMEM_OFFSET [0x1FC0]: 4238b423d055SHeiko Schocher enable SMC microcode relocation patch (MPC8xx); 4239b423d055SHeiko Schocher define relocation offset in DPRAM [SMC1] 4240b423d055SHeiko Schocher 42416d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPI_UCODE_PATCH, CONFIG_SYS_SPI_DPMEM_OFFSET [0x1FC0]: 4242c609719bSwdenk enable SPI microcode relocation patch (MPC8xx); 4243c609719bSwdenk define relocation offset in DPRAM [SCC4] 4244c609719bSwdenk 42456d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_USE_OSCCLK: 4246c609719bSwdenk Use OSCM clock mode on MBX8xx board. Be careful, 4247c609719bSwdenk wrong setting might damage your board. Read 4248c609719bSwdenk doc/README.MBX before setting this variable! 4249c609719bSwdenk 42506d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CPM_POST_WORD_ADDR: (MPC8xx, MPC8260 only) 4251ea909b76Swdenk Offset of the bootmode word in DPRAM used by post 4252ea909b76Swdenk (Power On Self Tests). This definition overrides 4253ea909b76Swdenk #define'd default value in commproc.h resp. 4254ea909b76Swdenk cpm_8260.h. 4255ea909b76Swdenk 42566d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PCI_SLV_MEM_LOCAL, CONFIG_SYS_PCI_SLV_MEM_BUS, CONFIG_SYS_PICMR0_MASK_ATTRIB, 42576d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR0_LOCAL, CONFIG_SYS_PCIMSK0_MASK, CONFIG_SYS_PCI_MSTR1_LOCAL, 42586d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCIMSK1_MASK, CONFIG_SYS_PCI_MSTR_MEM_LOCAL, CONFIG_SYS_PCI_MSTR_MEM_BUS, 42596d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CPU_PCI_MEM_START, CONFIG_SYS_PCI_MSTR_MEM_SIZE, CONFIG_SYS_POCMR0_MASK_ATTRIB, 42606d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_MEMIO_LOCAL, CONFIG_SYS_PCI_MSTR_MEMIO_BUS, CPU_PCI_MEMIO_START, 42616d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_MEMIO_SIZE, CONFIG_SYS_POCMR1_MASK_ATTRIB, CONFIG_SYS_PCI_MSTR_IO_LOCAL, 42626d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_IO_BUS, CONFIG_SYS_CPU_PCI_IO_START, CONFIG_SYS_PCI_MSTR_IO_SIZE, 42636d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_POCMR2_MASK_ATTRIB: (MPC826x only) 4264a47a12beSStefan Roese Overrides the default PCI memory map in arch/powerpc/cpu/mpc8260/pci.c if set. 42655d232d0eSwdenk 42669cacf4fcSDirk Eibach- CONFIG_PCI_DISABLE_PCIE: 42679cacf4fcSDirk Eibach Disable PCI-Express on systems where it is supported but not 42689cacf4fcSDirk Eibach required. 42699cacf4fcSDirk Eibach 427069fd2d3bSAndrew Sharp- CONFIG_PCI_ENUM_ONLY 427169fd2d3bSAndrew Sharp Only scan through and get the devices on the busses. 427269fd2d3bSAndrew Sharp Don't do any setup work, presumably because someone or 427369fd2d3bSAndrew Sharp something has already done it, and we don't need to do it 427469fd2d3bSAndrew Sharp a second time. Useful for platforms that are pre-booted 427569fd2d3bSAndrew Sharp by coreboot or similar. 427669fd2d3bSAndrew Sharp 4277842033e6SGabor Juhos- CONFIG_PCI_INDIRECT_BRIDGE: 4278842033e6SGabor Juhos Enable support for indirect PCI bridges. 4279842033e6SGabor Juhos 4280a09b9b68SKumar Gala- CONFIG_SYS_SRIO: 4281a09b9b68SKumar Gala Chip has SRIO or not 4282a09b9b68SKumar Gala 4283a09b9b68SKumar Gala- CONFIG_SRIO1: 4284a09b9b68SKumar Gala Board has SRIO 1 port available 4285a09b9b68SKumar Gala 4286a09b9b68SKumar Gala- CONFIG_SRIO2: 4287a09b9b68SKumar Gala Board has SRIO 2 port available 4288a09b9b68SKumar Gala 4289c8b28152SLiu Gang- CONFIG_SRIO_PCIE_BOOT_MASTER 4290c8b28152SLiu Gang Board can support master function for Boot from SRIO and PCIE 4291c8b28152SLiu Gang 4292a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_VIRT: 4293a09b9b68SKumar Gala Virtual Address of SRIO port 'n' memory region 4294a09b9b68SKumar Gala 4295a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_PHYS: 4296a09b9b68SKumar Gala Physical Address of SRIO port 'n' memory region 4297a09b9b68SKumar Gala 4298a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_SIZE: 4299a09b9b68SKumar Gala Size of SRIO port 'n' memory region 4300a09b9b68SKumar Gala 430166bd1846SFabio Estevam- CONFIG_SYS_NAND_BUSWIDTH_16BIT 430266bd1846SFabio Estevam Defined to tell the NAND controller that the NAND chip is using 430366bd1846SFabio Estevam a 16 bit bus. 430466bd1846SFabio Estevam Not all NAND drivers use this symbol. 4305a430e916SFabio Estevam Example of drivers that use it: 430666bd1846SFabio Estevam - drivers/mtd/nand/ndfc.c 4307a430e916SFabio Estevam - drivers/mtd/nand/mxc_nand.c 4308eced4626SAlex Waterman 4309eced4626SAlex Waterman- CONFIG_SYS_NDFC_EBC0_CFG 4310eced4626SAlex Waterman Sets the EBC0_CFG register for the NDFC. If not defined 4311eced4626SAlex Waterman a default value will be used. 4312eced4626SAlex Waterman 4313bb99ad6dSBen Warren- CONFIG_SPD_EEPROM 4314218ca724SWolfgang Denk Get DDR timing information from an I2C EEPROM. Common 4315218ca724SWolfgang Denk with pluggable memory modules such as SODIMMs 4316218ca724SWolfgang Denk 4317bb99ad6dSBen Warren SPD_EEPROM_ADDRESS 4318bb99ad6dSBen Warren I2C address of the SPD EEPROM 4319bb99ad6dSBen Warren 43206d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPD_BUS_NUM 4321218ca724SWolfgang Denk If SPD EEPROM is on an I2C bus other than the first 4322218ca724SWolfgang Denk one, specify here. Note that the value must resolve 4323218ca724SWolfgang Denk to something your driver can deal with. 4324bb99ad6dSBen Warren 43251b3e3c4fSYork Sun- CONFIG_SYS_DDR_RAW_TIMING 43261b3e3c4fSYork Sun Get DDR timing information from other than SPD. Common with 43271b3e3c4fSYork Sun soldered DDR chips onboard without SPD. DDR raw timing 43281b3e3c4fSYork Sun parameters are extracted from datasheet and hard-coded into 43291b3e3c4fSYork Sun header files or board specific files. 43301b3e3c4fSYork Sun 43316f5e1dc5SYork Sun- CONFIG_FSL_DDR_INTERACTIVE 43326f5e1dc5SYork Sun Enable interactive DDR debugging. See doc/README.fsl-ddr. 43336f5e1dc5SYork Sun 43346d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_83XX_DDR_USES_CS0 4335218ca724SWolfgang Denk Only for 83xx systems. If specified, then DDR should 4336218ca724SWolfgang Denk be configured using CS0 and CS1 instead of CS2 and CS3. 43372ad6b513STimur Tabi 4338c26e454dSwdenk- CONFIG_ETHER_ON_FEC[12] 4339c26e454dSwdenk Define to enable FEC[12] on a 8xx series processor. 4340c26e454dSwdenk 4341c26e454dSwdenk- CONFIG_FEC[12]_PHY 4342c26e454dSwdenk Define to the hardcoded PHY address which corresponds 43436e592385Swdenk to the given FEC; i. e. 4344c26e454dSwdenk #define CONFIG_FEC1_PHY 4 4345c26e454dSwdenk means that the PHY with address 4 is connected to FEC1 4346c26e454dSwdenk 4347c26e454dSwdenk When set to -1, means to probe for first available. 4348c26e454dSwdenk 4349c26e454dSwdenk- CONFIG_FEC[12]_PHY_NORXERR 4350c26e454dSwdenk The PHY does not have a RXERR line (RMII only). 4351c26e454dSwdenk (so program the FEC to ignore it). 4352c26e454dSwdenk 4353c26e454dSwdenk- CONFIG_RMII 4354c26e454dSwdenk Enable RMII mode for all FECs. 4355c26e454dSwdenk Note that this is a global option, we can't 4356c26e454dSwdenk have one FEC in standard MII mode and another in RMII mode. 4357c26e454dSwdenk 43585cf91d6bSwdenk- CONFIG_CRC32_VERIFY 43595cf91d6bSwdenk Add a verify option to the crc32 command. 43605cf91d6bSwdenk The syntax is: 43615cf91d6bSwdenk 43625cf91d6bSwdenk => crc32 -v <address> <count> <crc32> 43635cf91d6bSwdenk 43645cf91d6bSwdenk Where address/count indicate a memory area 43655cf91d6bSwdenk and crc32 is the correct crc32 which the 43665cf91d6bSwdenk area should have. 43675cf91d6bSwdenk 436856523f12Swdenk- CONFIG_LOOPW 436956523f12Swdenk Add the "loopw" memory command. This only takes effect if 4370602ad3b3SJon Loeliger the memory commands are activated globally (CONFIG_CMD_MEM). 437156523f12Swdenk 43727b466641Sstroese- CONFIG_MX_CYCLIC 43737b466641Sstroese Add the "mdc" and "mwc" memory commands. These are cyclic 43747b466641Sstroese "md/mw" commands. 43757b466641Sstroese Examples: 43767b466641Sstroese 43777b466641Sstroese => mdc.b 10 4 500 43787b466641Sstroese This command will print 4 bytes (10,11,12,13) each 500 ms. 43797b466641Sstroese 43807b466641Sstroese => mwc.l 100 12345678 10 43817b466641Sstroese This command will write 12345678 to address 100 all 10 ms. 43827b466641Sstroese 43837b466641Sstroese This only takes effect if the memory commands are activated 4384602ad3b3SJon Loeliger globally (CONFIG_CMD_MEM). 43857b466641Sstroese 43868aa1a2d1Swdenk- CONFIG_SKIP_LOWLEVEL_INIT 4387afc1ce82SMacpaul Lin [ARM, NDS32, MIPS only] If this variable is defined, then certain 4388e03f3169SWolfgang Denk low level initializations (like setting up the memory 4389e03f3169SWolfgang Denk controller) are omitted and/or U-Boot does not 4390e03f3169SWolfgang Denk relocate itself into RAM. 43918aa1a2d1Swdenk 4392e03f3169SWolfgang Denk Normally this variable MUST NOT be defined. The only 4393e03f3169SWolfgang Denk exception is when U-Boot is loaded (to RAM) by some 4394e03f3169SWolfgang Denk other boot loader or by a debugger which performs 4395e03f3169SWolfgang Denk these initializations itself. 43968aa1a2d1Swdenk 4397401bb30bSAneesh V- CONFIG_SPL_BUILD 4398df81238bSMagnus Lilja Modifies the behaviour of start.S when compiling a loader 4399df81238bSMagnus Lilja that is executed before the actual U-Boot. E.g. when 4400df81238bSMagnus Lilja compiling a NAND SPL. 4401400558b5Swdenk 44023aa29de0SYing Zhang- CONFIG_TPL_BUILD 44033aa29de0SYing Zhang Modifies the behaviour of start.S when compiling a loader 44043aa29de0SYing Zhang that is executed after the SPL and before the actual U-Boot. 44053aa29de0SYing Zhang It is loaded by the SPL. 44063aa29de0SYing Zhang 44075df572f0SYing Zhang- CONFIG_SYS_MPC85XX_NO_RESETVEC 44085df572f0SYing Zhang Only for 85xx systems. If this variable is specified, the section 44095df572f0SYing Zhang .resetvec is not kept and the section .bootpg is placed in the 44105df572f0SYing Zhang previous 4k of the .text section. 44115df572f0SYing Zhang 44124213fc29SSimon Glass- CONFIG_ARCH_MAP_SYSMEM 44134213fc29SSimon Glass Generally U-Boot (and in particular the md command) uses 44144213fc29SSimon Glass effective address. It is therefore not necessary to regard 44154213fc29SSimon Glass U-Boot address as virtual addresses that need to be translated 44164213fc29SSimon Glass to physical addresses. However, sandbox requires this, since 44174213fc29SSimon Glass it maintains its own little RAM buffer which contains all 44184213fc29SSimon Glass addressable memory. This option causes some memory accesses 44194213fc29SSimon Glass to be mapped through map_sysmem() / unmap_sysmem(). 44204213fc29SSimon Glass 4421d8834a13SMatthias Weisser- CONFIG_USE_ARCH_MEMCPY 4422d8834a13SMatthias Weisser CONFIG_USE_ARCH_MEMSET 4423d8834a13SMatthias Weisser If these options are used a optimized version of memcpy/memset will 4424d8834a13SMatthias Weisser be used if available. These functions may be faster under some 4425d8834a13SMatthias Weisser conditions but may increase the binary size. 4426d8834a13SMatthias Weisser 4427588a13f7SSimon Glass- CONFIG_X86_RESET_VECTOR 4428588a13f7SSimon Glass If defined, the x86 reset vector code is included. This is not 4429588a13f7SSimon Glass needed when U-Boot is running from Coreboot. 4430b16f521aSGabe Black 4431fc33705eSMark Jackson- CONFIG_SYS_MPUCLK 4432fc33705eSMark Jackson Defines the MPU clock speed (in MHz). 4433fc33705eSMark Jackson 4434fc33705eSMark Jackson NOTE : currently only supported on AM335x platforms. 44355b5ece9eSGabe Black 443616678eb4SHeiko Schocher- CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC: 443716678eb4SHeiko Schocher Enables the RTC32K OSC on AM33xx based plattforms 443816678eb4SHeiko Schocher 4439f2717b47STimur TabiFreescale QE/FMAN Firmware Support: 4440f2717b47STimur Tabi----------------------------------- 4441f2717b47STimur Tabi 4442f2717b47STimur TabiThe Freescale QUICCEngine (QE) and Frame Manager (FMAN) both support the 4443f2717b47STimur Tabiloading of "firmware", which is encoded in the QE firmware binary format. 4444f2717b47STimur TabiThis firmware often needs to be loaded during U-Boot booting, so macros 4445f2717b47STimur Tabiare used to identify the storage device (NOR flash, SPI, etc) and the address 4446f2717b47STimur Tabiwithin that device. 4447f2717b47STimur Tabi 4448f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_ADDR 4449f2717b47STimur Tabi The address in the storage device where the firmware is located. The 4450f2717b47STimur Tabi meaning of this address depends on which CONFIG_SYS_QE_FW_IN_xxx macro 4451f2717b47STimur Tabi is also specified. 4452f2717b47STimur Tabi 4453f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_LENGTH 4454f2717b47STimur Tabi The maximum possible size of the firmware. The firmware binary format 4455f2717b47STimur Tabi has a field that specifies the actual size of the firmware, but it 4456f2717b47STimur Tabi might not be possible to read any part of the firmware unless some 4457f2717b47STimur Tabi local storage is allocated to hold the entire firmware first. 4458f2717b47STimur Tabi 4459f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_NOR 4460f2717b47STimur Tabi Specifies that QE/FMAN firmware is located in NOR flash, mapped as 4461f2717b47STimur Tabi normal addressable memory via the LBC. CONFIG_SYS_FMAN_FW_ADDR is the 4462f2717b47STimur Tabi virtual address in NOR flash. 4463f2717b47STimur Tabi 4464f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_NAND 4465f2717b47STimur Tabi Specifies that QE/FMAN firmware is located in NAND flash. 4466f2717b47STimur Tabi CONFIG_SYS_FMAN_FW_ADDR is the offset within NAND flash. 4467f2717b47STimur Tabi 4468f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_MMC 4469f2717b47STimur Tabi Specifies that QE/FMAN firmware is located on the primary SD/MMC 4470f2717b47STimur Tabi device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device. 4471f2717b47STimur Tabi 4472f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_SPIFLASH 4473f2717b47STimur Tabi Specifies that QE/FMAN firmware is located on the primary SPI 4474f2717b47STimur Tabi device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device. 4475f2717b47STimur Tabi 4476292dc6c5SLiu Gang- CONFIG_SYS_QE_FMAN_FW_IN_REMOTE 4477292dc6c5SLiu Gang Specifies that QE/FMAN firmware is located in the remote (master) 4478292dc6c5SLiu Gang memory space. CONFIG_SYS_FMAN_FW_ADDR is a virtual address which 4479fc54c7faSLiu Gang can be mapped from slave TLB->slave LAW->slave SRIO or PCIE outbound 4480fc54c7faSLiu Gang window->master inbound window->master LAW->the ucode address in 4481fc54c7faSLiu Gang master's memory space. 4482f2717b47STimur Tabi 4483c609719bSwdenkBuilding the Software: 4484c609719bSwdenk====================== 4485c609719bSwdenk 4486218ca724SWolfgang DenkBuilding U-Boot has been tested in several native build environments 4487218ca724SWolfgang Denkand in many different cross environments. Of course we cannot support 4488218ca724SWolfgang Denkall possibly existing versions of cross development tools in all 4489218ca724SWolfgang Denk(potentially obsolete) versions. In case of tool chain problems we 4490218ca724SWolfgang Denkrecommend to use the ELDK (see http://www.denx.de/wiki/DULG/ELDK) 4491218ca724SWolfgang Denkwhich is extensively used to build and test U-Boot. 4492c609719bSwdenk 4493218ca724SWolfgang DenkIf you are not using a native environment, it is assumed that you 4494218ca724SWolfgang Denkhave GNU cross compiling tools available in your path. In this case, 4495218ca724SWolfgang Denkyou must set the environment variable CROSS_COMPILE in your shell. 4496218ca724SWolfgang DenkNote that no changes to the Makefile or any other source files are 4497218ca724SWolfgang Denknecessary. For example using the ELDK on a 4xx CPU, please enter: 4498c609719bSwdenk 4499218ca724SWolfgang Denk $ CROSS_COMPILE=ppc_4xx- 4500218ca724SWolfgang Denk $ export CROSS_COMPILE 4501c609719bSwdenk 45022f8d396bSPeter TyserNote: If you wish to generate Windows versions of the utilities in 45032f8d396bSPeter Tyser the tools directory you can use the MinGW toolchain 45042f8d396bSPeter Tyser (http://www.mingw.org). Set your HOST tools to the MinGW 45052f8d396bSPeter Tyser toolchain and execute 'make tools'. For example: 45062f8d396bSPeter Tyser 45072f8d396bSPeter Tyser $ make HOSTCC=i586-mingw32msvc-gcc HOSTSTRIP=i586-mingw32msvc-strip tools 45082f8d396bSPeter Tyser 45092f8d396bSPeter Tyser Binaries such as tools/mkimage.exe will be created which can 45102f8d396bSPeter Tyser be executed on computers running Windows. 45112f8d396bSPeter Tyser 4512c609719bSwdenkU-Boot is intended to be simple to build. After installing the 4513c609719bSwdenksources you must configure U-Boot for one specific board type. This 4514c609719bSwdenkis done by typing: 4515c609719bSwdenk 4516c609719bSwdenk make NAME_config 4517c609719bSwdenk 4518218ca724SWolfgang Denkwhere "NAME_config" is the name of one of the existing configu- 45194d675ae6SMichael Jonesrations; see boards.cfg for supported names. 452054387ac9Swdenk 4521c609719bSwdenkNote: for some board special configuration names may exist; check if 4522c609719bSwdenk additional information is available from the board vendor; for 45232729af9dSwdenk instance, the TQM823L systems are available without (standard) 45242729af9dSwdenk or with LCD support. You can select such additional "features" 452511ccc33fSMarcel Ziswiler when choosing the configuration, i. e. 4526c609719bSwdenk 45272729af9dSwdenk make TQM823L_config 45282729af9dSwdenk - will configure for a plain TQM823L, i. e. no LCD support 4529c609719bSwdenk 4530c609719bSwdenk make TQM823L_LCD_config 4531c609719bSwdenk - will configure for a TQM823L with U-Boot console on LCD 4532c609719bSwdenk 4533c609719bSwdenk etc. 4534c609719bSwdenk 4535c609719bSwdenk 4536c609719bSwdenkFinally, type "make all", and you should get some working U-Boot 45377152b1d0Swdenkimages ready for download to / installation on your system: 4538c609719bSwdenk 4539c609719bSwdenk- "u-boot.bin" is a raw binary image 4540c609719bSwdenk- "u-boot" is an image in ELF binary format 4541c609719bSwdenk- "u-boot.srec" is in Motorola S-Record format 4542c609719bSwdenk 4543baf31249SMarian BalakowiczBy default the build is performed locally and the objects are saved 4544baf31249SMarian Balakowiczin the source directory. One of the two methods can be used to change 4545baf31249SMarian Balakowiczthis behavior and build U-Boot to some external directory: 4546baf31249SMarian Balakowicz 4547baf31249SMarian Balakowicz1. Add O= to the make command line invocations: 4548baf31249SMarian Balakowicz 4549baf31249SMarian Balakowicz make O=/tmp/build distclean 4550baf31249SMarian Balakowicz make O=/tmp/build NAME_config 4551baf31249SMarian Balakowicz make O=/tmp/build all 4552baf31249SMarian Balakowicz 4553baf31249SMarian Balakowicz2. Set environment variable BUILD_DIR to point to the desired location: 4554baf31249SMarian Balakowicz 4555baf31249SMarian Balakowicz export BUILD_DIR=/tmp/build 4556baf31249SMarian Balakowicz make distclean 4557baf31249SMarian Balakowicz make NAME_config 4558baf31249SMarian Balakowicz make all 4559baf31249SMarian Balakowicz 4560baf31249SMarian BalakowiczNote that the command line "O=" setting overrides the BUILD_DIR environment 4561baf31249SMarian Balakowiczvariable. 4562baf31249SMarian Balakowicz 4563c609719bSwdenk 4564c609719bSwdenkPlease be aware that the Makefiles assume you are using GNU make, so 4565c609719bSwdenkfor instance on NetBSD you might need to use "gmake" instead of 4566c609719bSwdenknative "make". 4567c609719bSwdenk 4568c609719bSwdenk 4569c609719bSwdenkIf the system board that you have is not listed, then you will need 4570c609719bSwdenkto port U-Boot to your hardware platform. To do this, follow these 4571c609719bSwdenksteps: 4572c609719bSwdenk 4573c609719bSwdenk1. Add a new configuration option for your board to the toplevel 45744d675ae6SMichael Jones "boards.cfg" file, using the existing entries as examples. 45754d675ae6SMichael Jones Follow the instructions there to keep the boards in order. 4576c609719bSwdenk2. Create a new directory to hold your board specific code. Add any 457785ec0bccSwdenk files you need. In your board directory, you will need at least 457885ec0bccSwdenk the "Makefile", a "<board>.c", "flash.c" and "u-boot.lds". 457985ec0bccSwdenk3. Create a new configuration file "include/configs/<board>.h" for 458085ec0bccSwdenk your board 4581c609719bSwdenk3. If you're porting U-Boot to a new CPU, then also create a new 4582c609719bSwdenk directory to hold your CPU specific code. Add any files you need. 458385ec0bccSwdenk4. Run "make <board>_config" with your new name. 4584c609719bSwdenk5. Type "make", and you should get a working "u-boot.srec" file 4585c609719bSwdenk to be installed on your target system. 458685ec0bccSwdenk6. Debug and solve any problems that might arise. 4587c609719bSwdenk [Of course, this last step is much harder than it sounds.] 4588c609719bSwdenk 4589c609719bSwdenk 4590c609719bSwdenkTesting of U-Boot Modifications, Ports to New Hardware, etc.: 4591c609719bSwdenk============================================================== 4592c609719bSwdenk 4593c609719bSwdenkIf you have modified U-Boot sources (for instance added a new board 4594c609719bSwdenkor support for new devices, a new CPU, etc.) you are expected to 4595c609719bSwdenkprovide feedback to the other developers. The feedback normally takes 4596c609719bSwdenkthe form of a "patch", i. e. a context diff against a certain (latest 4597218ca724SWolfgang Denkofficial or latest in the git repository) version of U-Boot sources. 4598c609719bSwdenk 4599c609719bSwdenkBut before you submit such a patch, please verify that your modifi- 4600c609719bSwdenkcation did not break existing code. At least make sure that *ALL* of 4601c609719bSwdenkthe supported boards compile WITHOUT ANY compiler warnings. To do so, 4602c609719bSwdenkjust run the "MAKEALL" script, which will configure and build U-Boot 4603c609719bSwdenkfor ALL supported system. Be warned, this will take a while. You can 46047152b1d0Swdenkselect which (cross) compiler to use by passing a `CROSS_COMPILE' 4605218ca724SWolfgang Denkenvironment variable to the script, i. e. to use the ELDK cross tools 4606218ca724SWolfgang Denkyou can type 4607c609719bSwdenk 4608c609719bSwdenk CROSS_COMPILE=ppc_8xx- MAKEALL 4609c609719bSwdenk 4610c609719bSwdenkor to build on a native PowerPC system you can type 4611c609719bSwdenk 4612c609719bSwdenk CROSS_COMPILE=' ' MAKEALL 4613c609719bSwdenk 4614218ca724SWolfgang DenkWhen using the MAKEALL script, the default behaviour is to build 4615218ca724SWolfgang DenkU-Boot in the source directory. This location can be changed by 4616218ca724SWolfgang Denksetting the BUILD_DIR environment variable. Also, for each target 4617218ca724SWolfgang Denkbuilt, the MAKEALL script saves two log files (<target>.ERR and 4618218ca724SWolfgang Denk<target>.MAKEALL) in the <source dir>/LOG directory. This default 4619218ca724SWolfgang Denklocation can be changed by setting the MAKEALL_LOGDIR environment 4620218ca724SWolfgang Denkvariable. For example: 4621baf31249SMarian Balakowicz 4622baf31249SMarian Balakowicz export BUILD_DIR=/tmp/build 4623baf31249SMarian Balakowicz export MAKEALL_LOGDIR=/tmp/log 4624baf31249SMarian Balakowicz CROSS_COMPILE=ppc_8xx- MAKEALL 4625baf31249SMarian Balakowicz 4626218ca724SWolfgang DenkWith the above settings build objects are saved in the /tmp/build, 4627218ca724SWolfgang Denklog files are saved in the /tmp/log and the source tree remains clean 4628218ca724SWolfgang Denkduring the whole build process. 4629baf31249SMarian Balakowicz 4630baf31249SMarian Balakowicz 4631c609719bSwdenkSee also "U-Boot Porting Guide" below. 4632c609719bSwdenk 4633c609719bSwdenk 4634c609719bSwdenkMonitor Commands - Overview: 4635c609719bSwdenk============================ 4636c609719bSwdenk 4637c609719bSwdenkgo - start application at address 'addr' 4638c609719bSwdenkrun - run commands in an environment variable 4639c609719bSwdenkbootm - boot application image from memory 4640c609719bSwdenkbootp - boot image via network using BootP/TFTP protocol 464144f074c7SMarek Vasutbootz - boot zImage from memory 4642c609719bSwdenktftpboot- boot image via network using TFTP protocol 4643c609719bSwdenk and env variables "ipaddr" and "serverip" 4644c609719bSwdenk (and eventually "gatewayip") 46451fb7cd49SSimon Glasstftpput - upload a file via network using TFTP protocol 4646c609719bSwdenkrarpboot- boot image via network using RARP/TFTP protocol 4647c609719bSwdenkdiskboot- boot from IDE devicebootd - boot default, i.e., run 'bootcmd' 4648c609719bSwdenkloads - load S-Record file over serial line 4649c609719bSwdenkloadb - load binary file over serial line (kermit mode) 4650c609719bSwdenkmd - memory display 4651c609719bSwdenkmm - memory modify (auto-incrementing) 4652c609719bSwdenknm - memory modify (constant address) 4653c609719bSwdenkmw - memory write (fill) 4654c609719bSwdenkcp - memory copy 4655c609719bSwdenkcmp - memory compare 4656c609719bSwdenkcrc32 - checksum calculation 46570f89c54bSPeter Tyseri2c - I2C sub-system 4658c609719bSwdenksspi - SPI utility commands 4659c609719bSwdenkbase - print or set address offset 4660c609719bSwdenkprintenv- print environment variables 4661c609719bSwdenksetenv - set environment variables 4662c609719bSwdenksaveenv - save environment variables to persistent storage 4663c609719bSwdenkprotect - enable or disable FLASH write protection 4664c609719bSwdenkerase - erase FLASH memory 4665c609719bSwdenkflinfo - print FLASH memory information 466610635afaSKarl O. Pincnand - NAND memory operations (see doc/README.nand) 4667c609719bSwdenkbdinfo - print Board Info structure 4668c609719bSwdenkiminfo - print header information for application image 4669c609719bSwdenkconinfo - print console devices and informations 4670c609719bSwdenkide - IDE sub-system 4671c609719bSwdenkloop - infinite loop on address range 467256523f12Swdenkloopw - infinite write loop on address range 4673c609719bSwdenkmtest - simple RAM test 4674c609719bSwdenkicache - enable or disable instruction cache 4675c609719bSwdenkdcache - enable or disable data cache 4676c609719bSwdenkreset - Perform RESET of the CPU 4677c609719bSwdenkecho - echo args to console 4678c609719bSwdenkversion - print monitor version 4679c609719bSwdenkhelp - print online help 4680c609719bSwdenk? - alias for 'help' 4681c609719bSwdenk 4682c609719bSwdenk 4683c609719bSwdenkMonitor Commands - Detailed Description: 4684c609719bSwdenk======================================== 4685c609719bSwdenk 4686c609719bSwdenkTODO. 4687c609719bSwdenk 4688c609719bSwdenkFor now: just type "help <command>". 4689c609719bSwdenk 4690c609719bSwdenk 4691c609719bSwdenkEnvironment Variables: 4692c609719bSwdenk====================== 4693c609719bSwdenk 4694c609719bSwdenkU-Boot supports user configuration using Environment Variables which 4695c609719bSwdenkcan be made persistent by saving to Flash memory. 4696c609719bSwdenk 4697c609719bSwdenkEnvironment Variables are set using "setenv", printed using 4698c609719bSwdenk"printenv", and saved to Flash using "saveenv". Using "setenv" 4699c609719bSwdenkwithout a value can be used to delete a variable from the 4700c609719bSwdenkenvironment. As long as you don't save the environment you are 4701c609719bSwdenkworking with an in-memory copy. In case the Flash area containing the 4702c609719bSwdenkenvironment is erased by accident, a default environment is provided. 4703c609719bSwdenk 4704c96f86eeSWolfgang DenkSome configuration options can be set using Environment Variables. 4705c96f86eeSWolfgang Denk 4706c96f86eeSWolfgang DenkList of environment variables (most likely not complete): 4707c609719bSwdenk 4708c609719bSwdenk baudrate - see CONFIG_BAUDRATE 4709c609719bSwdenk 4710c609719bSwdenk bootdelay - see CONFIG_BOOTDELAY 4711c609719bSwdenk 4712c609719bSwdenk bootcmd - see CONFIG_BOOTCOMMAND 4713c609719bSwdenk 4714c609719bSwdenk bootargs - Boot arguments when booting an RTOS image 4715c609719bSwdenk 4716c609719bSwdenk bootfile - Name of the image to load with TFTP 4717c609719bSwdenk 47187d721e34SBartlomiej Sieka bootm_low - Memory range available for image processing in the bootm 47197d721e34SBartlomiej Sieka command can be restricted. This variable is given as 47207d721e34SBartlomiej Sieka a hexadecimal number and defines lowest address allowed 47217d721e34SBartlomiej Sieka for use by the bootm command. See also "bootm_size" 47227d721e34SBartlomiej Sieka environment variable. Address defined by "bootm_low" is 47237d721e34SBartlomiej Sieka also the base of the initial memory mapping for the Linux 4724c3624e6eSGrant Likely kernel -- see the description of CONFIG_SYS_BOOTMAPSZ and 4725c3624e6eSGrant Likely bootm_mapsize. 4726c3624e6eSGrant Likely 4727c3624e6eSGrant Likely bootm_mapsize - Size of the initial memory mapping for the Linux kernel. 4728c3624e6eSGrant Likely This variable is given as a hexadecimal number and it 4729c3624e6eSGrant Likely defines the size of the memory region starting at base 4730c3624e6eSGrant Likely address bootm_low that is accessible by the Linux kernel 4731c3624e6eSGrant Likely during early boot. If unset, CONFIG_SYS_BOOTMAPSZ is used 4732c3624e6eSGrant Likely as the default value if it is defined, and bootm_size is 4733c3624e6eSGrant Likely used otherwise. 47347d721e34SBartlomiej Sieka 47357d721e34SBartlomiej Sieka bootm_size - Memory range available for image processing in the bootm 47367d721e34SBartlomiej Sieka command can be restricted. This variable is given as 47377d721e34SBartlomiej Sieka a hexadecimal number and defines the size of the region 47387d721e34SBartlomiej Sieka allowed for use by the bootm command. See also "bootm_low" 47397d721e34SBartlomiej Sieka environment variable. 47407d721e34SBartlomiej Sieka 47414bae9090SBartlomiej Sieka updatefile - Location of the software update file on a TFTP server, used 47424bae9090SBartlomiej Sieka by the automatic software update feature. Please refer to 47434bae9090SBartlomiej Sieka documentation in doc/README.update for more details. 47444bae9090SBartlomiej Sieka 4745c609719bSwdenk autoload - if set to "no" (any string beginning with 'n'), 4746c609719bSwdenk "bootp" will just load perform a lookup of the 4747c609719bSwdenk configuration from the BOOTP server, but not try to 4748c609719bSwdenk load any image using TFTP 4749c609719bSwdenk 4750c609719bSwdenk autostart - if set to "yes", an image loaded using the "bootp", 4751c609719bSwdenk "rarpboot", "tftpboot" or "diskboot" commands will 4752c609719bSwdenk be automatically started (by internally calling 4753c609719bSwdenk "bootm") 4754c609719bSwdenk 47554a6fd34bSwdenk If set to "no", a standalone image passed to the 47564a6fd34bSwdenk "bootm" command will be copied to the load address 47574a6fd34bSwdenk (and eventually uncompressed), but NOT be started. 47584a6fd34bSwdenk This can be used to load and uncompress arbitrary 47594a6fd34bSwdenk data. 47604a6fd34bSwdenk 4761a28afca5SDavid A. Long fdt_high - if set this restricts the maximum address that the 4762a28afca5SDavid A. Long flattened device tree will be copied into upon boot. 4763fa34f6b2SShawn Guo For example, if you have a system with 1 GB memory 4764fa34f6b2SShawn Guo at physical address 0x10000000, while Linux kernel 4765fa34f6b2SShawn Guo only recognizes the first 704 MB as low memory, you 4766fa34f6b2SShawn Guo may need to set fdt_high as 0x3C000000 to have the 4767fa34f6b2SShawn Guo device tree blob be copied to the maximum address 4768fa34f6b2SShawn Guo of the 704 MB low memory, so that Linux kernel can 4769fa34f6b2SShawn Guo access it during the boot procedure. 4770fa34f6b2SShawn Guo 4771a28afca5SDavid A. Long If this is set to the special value 0xFFFFFFFF then 4772a28afca5SDavid A. Long the fdt will not be copied at all on boot. For this 4773a28afca5SDavid A. Long to work it must reside in writable memory, have 4774a28afca5SDavid A. Long sufficient padding on the end of it for u-boot to 4775a28afca5SDavid A. Long add the information it needs into it, and the memory 4776a28afca5SDavid A. Long must be accessible by the kernel. 4777a28afca5SDavid A. Long 4778eea63e05SSimon Glass fdtcontroladdr- if set this is the address of the control flattened 4779eea63e05SSimon Glass device tree used by U-Boot when CONFIG_OF_CONTROL is 4780eea63e05SSimon Glass defined. 4781eea63e05SSimon Glass 478217ea1177Swdenk i2cfast - (PPC405GP|PPC405EP only) 478317ea1177Swdenk if set to 'y' configures Linux I2C driver for fast 478417ea1177Swdenk mode (400kHZ). This environment variable is used in 478517ea1177Swdenk initialization code. So, for changes to be effective 478617ea1177Swdenk it must be saved and board must be reset. 478717ea1177Swdenk 4788c609719bSwdenk initrd_high - restrict positioning of initrd images: 4789c609719bSwdenk If this variable is not set, initrd images will be 4790c609719bSwdenk copied to the highest possible address in RAM; this 4791c609719bSwdenk is usually what you want since it allows for 4792c609719bSwdenk maximum initrd size. If for some reason you want to 4793c609719bSwdenk make sure that the initrd image is loaded below the 47946d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BOOTMAPSZ limit, you can set this environment 4795c609719bSwdenk variable to a value of "no" or "off" or "0". 4796c609719bSwdenk Alternatively, you can set it to a maximum upper 4797c609719bSwdenk address to use (U-Boot will still check that it 4798c609719bSwdenk does not overwrite the U-Boot stack and data). 4799c609719bSwdenk 4800c609719bSwdenk For instance, when you have a system with 16 MB 48017152b1d0Swdenk RAM, and want to reserve 4 MB from use by Linux, 4802c609719bSwdenk you can do this by adding "mem=12M" to the value of 4803c609719bSwdenk the "bootargs" variable. However, now you must make 48047152b1d0Swdenk sure that the initrd image is placed in the first 4805c609719bSwdenk 12 MB as well - this can be done with 4806c609719bSwdenk 4807c609719bSwdenk setenv initrd_high 00c00000 4808c609719bSwdenk 480938b99261Swdenk If you set initrd_high to 0xFFFFFFFF, this is an 481038b99261Swdenk indication to U-Boot that all addresses are legal 481138b99261Swdenk for the Linux kernel, including addresses in flash 481238b99261Swdenk memory. In this case U-Boot will NOT COPY the 481338b99261Swdenk ramdisk at all. This may be useful to reduce the 481438b99261Swdenk boot time on your system, but requires that this 481538b99261Swdenk feature is supported by your Linux kernel. 481638b99261Swdenk 4817c609719bSwdenk ipaddr - IP address; needed for tftpboot command 4818c609719bSwdenk 4819c609719bSwdenk loadaddr - Default load address for commands like "bootp", 4820dc7c9a1aSwdenk "rarpboot", "tftpboot", "loadb" or "diskboot" 4821c609719bSwdenk 4822c609719bSwdenk loads_echo - see CONFIG_LOADS_ECHO 4823c609719bSwdenk 4824c609719bSwdenk serverip - TFTP server IP address; needed for tftpboot command 4825c609719bSwdenk 4826c609719bSwdenk bootretry - see CONFIG_BOOT_RETRY_TIME 4827c609719bSwdenk 4828c609719bSwdenk bootdelaykey - see CONFIG_AUTOBOOT_DELAY_STR 4829c609719bSwdenk 4830c609719bSwdenk bootstopkey - see CONFIG_AUTOBOOT_STOP_STR 4831c609719bSwdenk 4832e2a53458SMike Frysinger ethprime - controls which interface is used first. 4833a3d991bdSwdenk 4834e2a53458SMike Frysinger ethact - controls which interface is currently active. 4835e2a53458SMike Frysinger For example you can do the following 4836a3d991bdSwdenk 483748690d80SHeiko Schocher => setenv ethact FEC 483848690d80SHeiko Schocher => ping 192.168.0.1 # traffic sent on FEC 483948690d80SHeiko Schocher => setenv ethact SCC 484048690d80SHeiko Schocher => ping 10.0.0.1 # traffic sent on SCC 4841a3d991bdSwdenk 4842e1692577SMatthias Fuchs ethrotate - When set to "no" U-Boot does not go through all 4843e1692577SMatthias Fuchs available network interfaces. 4844e1692577SMatthias Fuchs It just stays at the currently selected interface. 4845e1692577SMatthias Fuchs 4846a3d991bdSwdenk netretry - When set to "no" each network operation will 4847a3d991bdSwdenk either succeed or fail without retrying. 48486e592385Swdenk When set to "once" the network operation will 48496e592385Swdenk fail when all the available network interfaces 48506e592385Swdenk are tried once without success. 4851a3d991bdSwdenk Useful on scripts which control the retry operation 4852a3d991bdSwdenk themselves. 4853a3d991bdSwdenk 4854b4e2f89dSJean-Christophe PLAGNIOL-VILLARD npe_ucode - set load address for the NPE microcode 4855a1cf027aSJean-Christophe PLAGNIOL-VILLARD 48568d51aacdSSimon Glass silent_linux - If set then linux will be told to boot silently, by 48578d51aacdSSimon Glass changing the console to be empty. If "yes" it will be 48588d51aacdSSimon Glass made silent. If "no" it will not be made silent. If 48598d51aacdSSimon Glass unset, then it will be made silent if the U-Boot console 48608d51aacdSSimon Glass is silent. 48618d51aacdSSimon Glass 486228cb9375SWolfgang Denk tftpsrcport - If this is set, the value is used for TFTP's 4863ecb0ccd9SWolfgang Denk UDP source port. 4864ecb0ccd9SWolfgang Denk 486528cb9375SWolfgang Denk tftpdstport - If this is set, the value is used for TFTP's UDP 486628cb9375SWolfgang Denk destination port instead of the Well Know Port 69. 486728cb9375SWolfgang Denk 4868c96f86eeSWolfgang Denk tftpblocksize - Block size to use for TFTP transfers; if not set, 4869c96f86eeSWolfgang Denk we use the TFTP server's default block size 4870c96f86eeSWolfgang Denk 4871c96f86eeSWolfgang Denk tftptimeout - Retransmission timeout for TFTP packets (in milli- 4872c96f86eeSWolfgang Denk seconds, minimum value is 1000 = 1 second). Defines 4873c96f86eeSWolfgang Denk when a packet is considered to be lost so it has to 4874c96f86eeSWolfgang Denk be retransmitted. The default is 5000 = 5 seconds. 4875c96f86eeSWolfgang Denk Lowering this value may make downloads succeed 4876c96f86eeSWolfgang Denk faster in networks with high packet loss rates or 4877c96f86eeSWolfgang Denk with unreliable TFTP servers. 4878c96f86eeSWolfgang Denk 4879a3d991bdSwdenk vlan - When set to a value < 4095 the traffic over 488011ccc33fSMarcel Ziswiler Ethernet is encapsulated/received over 802.1q 4881a3d991bdSwdenk VLAN tagged frames. 4882c609719bSwdenk 4883dc0b7b0eSJason HobbsThe following image location variables contain the location of images 4884dc0b7b0eSJason Hobbsused in booting. The "Image" column gives the role of the image and is 4885dc0b7b0eSJason Hobbsnot an environment variable name. The other columns are environment 4886dc0b7b0eSJason Hobbsvariable names. "File Name" gives the name of the file on a TFTP 4887dc0b7b0eSJason Hobbsserver, "RAM Address" gives the location in RAM the image will be 4888dc0b7b0eSJason Hobbsloaded to, and "Flash Location" gives the image's address in NOR 4889dc0b7b0eSJason Hobbsflash or offset in NAND flash. 4890dc0b7b0eSJason Hobbs 4891dc0b7b0eSJason Hobbs*Note* - these variables don't have to be defined for all boards, some 4892dc0b7b0eSJason Hobbsboards currenlty use other variables for these purposes, and some 4893dc0b7b0eSJason Hobbsboards use these variables for other purposes. 4894dc0b7b0eSJason Hobbs 4895dc0b7b0eSJason HobbsImage File Name RAM Address Flash Location 4896dc0b7b0eSJason Hobbs----- --------- ----------- -------------- 4897dc0b7b0eSJason Hobbsu-boot u-boot u-boot_addr_r u-boot_addr 4898dc0b7b0eSJason HobbsLinux kernel bootfile kernel_addr_r kernel_addr 4899dc0b7b0eSJason Hobbsdevice tree blob fdtfile fdt_addr_r fdt_addr 4900dc0b7b0eSJason Hobbsramdisk ramdiskfile ramdisk_addr_r ramdisk_addr 4901dc0b7b0eSJason Hobbs 4902c609719bSwdenkThe following environment variables may be used and automatically 4903c609719bSwdenkupdated by the network boot commands ("bootp" and "rarpboot"), 4904c609719bSwdenkdepending the information provided by your boot server: 4905c609719bSwdenk 4906c609719bSwdenk bootfile - see above 4907c609719bSwdenk dnsip - IP address of your Domain Name Server 4908fe389a82Sstroese dnsip2 - IP address of your secondary Domain Name Server 4909c609719bSwdenk gatewayip - IP address of the Gateway (Router) to use 4910c609719bSwdenk hostname - Target hostname 4911c609719bSwdenk ipaddr - see above 4912c609719bSwdenk netmask - Subnet Mask 4913c609719bSwdenk rootpath - Pathname of the root filesystem on the NFS server 4914c609719bSwdenk serverip - see above 4915c609719bSwdenk 4916c609719bSwdenk 4917c609719bSwdenkThere are two special Environment Variables: 4918c609719bSwdenk 4919c609719bSwdenk serial# - contains hardware identification information such 4920c609719bSwdenk as type string and/or serial number 4921c609719bSwdenk ethaddr - Ethernet address 4922c609719bSwdenk 4923c609719bSwdenkThese variables can be set only once (usually during manufacturing of 4924c609719bSwdenkthe board). U-Boot refuses to delete or overwrite these variables 4925c609719bSwdenkonce they have been set once. 4926c609719bSwdenk 4927c609719bSwdenk 4928c1551ea8SstroeseFurther special Environment Variables: 4929c1551ea8Sstroese 4930c1551ea8Sstroese ver - Contains the U-Boot version string as printed 4931c1551ea8Sstroese with the "version" command. This variable is 4932c1551ea8Sstroese readonly (see CONFIG_VERSION_VARIABLE). 4933c1551ea8Sstroese 4934c1551ea8Sstroese 4935c609719bSwdenkPlease note that changes to some configuration parameters may take 4936c609719bSwdenkonly effect after the next boot (yes, that's just like Windoze :-). 4937c609719bSwdenk 4938c609719bSwdenk 4939170ab110SJoe HershbergerCallback functions for environment variables: 4940170ab110SJoe Hershberger--------------------------------------------- 4941170ab110SJoe Hershberger 4942170ab110SJoe HershbergerFor some environment variables, the behavior of u-boot needs to change 4943170ab110SJoe Hershbergerwhen their values are changed. This functionailty allows functions to 4944170ab110SJoe Hershbergerbe associated with arbitrary variables. On creation, overwrite, or 4945170ab110SJoe Hershbergerdeletion, the callback will provide the opportunity for some side 4946170ab110SJoe Hershbergereffect to happen or for the change to be rejected. 4947170ab110SJoe Hershberger 4948170ab110SJoe HershbergerThe callbacks are named and associated with a function using the 4949170ab110SJoe HershbergerU_BOOT_ENV_CALLBACK macro in your board or driver code. 4950170ab110SJoe Hershberger 4951170ab110SJoe HershbergerThese callbacks are associated with variables in one of two ways. The 4952170ab110SJoe Hershbergerstatic list can be added to by defining CONFIG_ENV_CALLBACK_LIST_STATIC 4953170ab110SJoe Hershbergerin the board configuration to a string that defines a list of 4954170ab110SJoe Hershbergerassociations. The list must be in the following format: 4955170ab110SJoe Hershberger 4956170ab110SJoe Hershberger entry = variable_name[:callback_name] 4957170ab110SJoe Hershberger list = entry[,list] 4958170ab110SJoe Hershberger 4959170ab110SJoe HershbergerIf the callback name is not specified, then the callback is deleted. 4960170ab110SJoe HershbergerSpaces are also allowed anywhere in the list. 4961170ab110SJoe Hershberger 4962170ab110SJoe HershbergerCallbacks can also be associated by defining the ".callbacks" variable 4963170ab110SJoe Hershbergerwith the same list format above. Any association in ".callbacks" will 4964170ab110SJoe Hershbergeroverride any association in the static list. You can define 4965170ab110SJoe HershbergerCONFIG_ENV_CALLBACK_LIST_DEFAULT to a list (string) to define the 4966170ab110SJoe Hershberger".callbacks" envirnoment variable in the default or embedded environment. 4967170ab110SJoe Hershberger 4968170ab110SJoe Hershberger 4969f07771ccSwdenkCommand Line Parsing: 4970f07771ccSwdenk===================== 4971f07771ccSwdenk 4972f07771ccSwdenkThere are two different command line parsers available with U-Boot: 49737152b1d0Swdenkthe old "simple" one, and the much more powerful "hush" shell: 4974f07771ccSwdenk 4975f07771ccSwdenkOld, simple command line parser: 4976f07771ccSwdenk-------------------------------- 4977f07771ccSwdenk 4978f07771ccSwdenk- supports environment variables (through setenv / saveenv commands) 4979f07771ccSwdenk- several commands on one line, separated by ';' 4980fe126d8bSWolfgang Denk- variable substitution using "... ${name} ..." syntax 4981f07771ccSwdenk- special characters ('$', ';') can be escaped by prefixing with '\', 4982f07771ccSwdenk for example: 4983fe126d8bSWolfgang Denk setenv bootcmd bootm \${address} 4984f07771ccSwdenk- You can also escape text by enclosing in single apostrophes, for example: 4985f07771ccSwdenk setenv addip 'setenv bootargs $bootargs ip=$ipaddr:$serverip:$gatewayip:$netmask:$hostname::off' 4986f07771ccSwdenk 4987f07771ccSwdenkHush shell: 4988f07771ccSwdenk----------- 4989f07771ccSwdenk 4990f07771ccSwdenk- similar to Bourne shell, with control structures like 4991f07771ccSwdenk if...then...else...fi, for...do...done; while...do...done, 4992f07771ccSwdenk until...do...done, ... 4993f07771ccSwdenk- supports environment ("global") variables (through setenv / saveenv 4994f07771ccSwdenk commands) and local shell variables (through standard shell syntax 4995f07771ccSwdenk "name=value"); only environment variables can be used with "run" 4996f07771ccSwdenk command 4997f07771ccSwdenk 4998f07771ccSwdenkGeneral rules: 4999f07771ccSwdenk-------------- 5000f07771ccSwdenk 5001f07771ccSwdenk(1) If a command line (or an environment variable executed by a "run" 5002f07771ccSwdenk command) contains several commands separated by semicolon, and 5003f07771ccSwdenk one of these commands fails, then the remaining commands will be 5004f07771ccSwdenk executed anyway. 5005f07771ccSwdenk 5006f07771ccSwdenk(2) If you execute several variables with one call to run (i. e. 500711ccc33fSMarcel Ziswiler calling run with a list of variables as arguments), any failing 5008f07771ccSwdenk command will cause "run" to terminate, i. e. the remaining 5009f07771ccSwdenk variables are not executed. 5010f07771ccSwdenk 5011c609719bSwdenkNote for Redundant Ethernet Interfaces: 5012c609719bSwdenk======================================= 5013c609719bSwdenk 501411ccc33fSMarcel ZiswilerSome boards come with redundant Ethernet interfaces; U-Boot supports 5015c609719bSwdenksuch configurations and is capable of automatic selection of a 50167152b1d0Swdenk"working" interface when needed. MAC assignment works as follows: 5017c609719bSwdenk 5018c609719bSwdenkNetwork interfaces are numbered eth0, eth1, eth2, ... Corresponding 5019c609719bSwdenkMAC addresses can be stored in the environment as "ethaddr" (=>eth0), 5020c609719bSwdenk"eth1addr" (=>eth1), "eth2addr", ... 5021c609719bSwdenk 5022c609719bSwdenkIf the network interface stores some valid MAC address (for instance 5023c609719bSwdenkin SROM), this is used as default address if there is NO correspon- 5024c609719bSwdenkding setting in the environment; if the corresponding environment 5025c609719bSwdenkvariable is set, this overrides the settings in the card; that means: 5026c609719bSwdenk 5027c609719bSwdenko If the SROM has a valid MAC address, and there is no address in the 5028c609719bSwdenk environment, the SROM's address is used. 5029c609719bSwdenk 5030c609719bSwdenko If there is no valid address in the SROM, and a definition in the 5031c609719bSwdenk environment exists, then the value from the environment variable is 5032c609719bSwdenk used. 5033c609719bSwdenk 5034c609719bSwdenko If both the SROM and the environment contain a MAC address, and 5035c609719bSwdenk both addresses are the same, this MAC address is used. 5036c609719bSwdenk 5037c609719bSwdenko If both the SROM and the environment contain a MAC address, and the 5038c609719bSwdenk addresses differ, the value from the environment is used and a 5039c609719bSwdenk warning is printed. 5040c609719bSwdenk 5041c609719bSwdenko If neither SROM nor the environment contain a MAC address, an error 5042c609719bSwdenk is raised. 5043c609719bSwdenk 5044ecee9324SBen WarrenIf Ethernet drivers implement the 'write_hwaddr' function, valid MAC addresses 5045ecee9324SBen Warrenwill be programmed into hardware as part of the initialization process. This 5046ecee9324SBen Warrenmay be skipped by setting the appropriate 'ethmacskip' environment variable. 5047ecee9324SBen WarrenThe naming convention is as follows: 5048ecee9324SBen Warren"ethmacskip" (=>eth0), "eth1macskip" (=>eth1) etc. 5049c609719bSwdenk 5050c609719bSwdenkImage Formats: 5051c609719bSwdenk============== 5052c609719bSwdenk 50533310c549SMarian BalakowiczU-Boot is capable of booting (and performing other auxiliary operations on) 50543310c549SMarian Balakowiczimages in two formats: 50553310c549SMarian Balakowicz 50563310c549SMarian BalakowiczNew uImage format (FIT) 50573310c549SMarian Balakowicz----------------------- 50583310c549SMarian Balakowicz 50593310c549SMarian BalakowiczFlexible and powerful format based on Flattened Image Tree -- FIT (similar 50603310c549SMarian Balakowiczto Flattened Device Tree). It allows the use of images with multiple 50613310c549SMarian Balakowiczcomponents (several kernels, ramdisks, etc.), with contents protected by 50623310c549SMarian BalakowiczSHA1, MD5 or CRC32. More details are found in the doc/uImage.FIT directory. 50633310c549SMarian Balakowicz 50643310c549SMarian Balakowicz 50653310c549SMarian BalakowiczOld uImage format 50663310c549SMarian Balakowicz----------------- 50673310c549SMarian Balakowicz 50683310c549SMarian BalakowiczOld image format is based on binary files which can be basically anything, 50693310c549SMarian Balakowiczpreceded by a special header; see the definitions in include/image.h for 50703310c549SMarian Balakowiczdetails; basically, the header defines the following image properties: 5071c609719bSwdenk 5072c609719bSwdenk* Target Operating System (Provisions for OpenBSD, NetBSD, FreeBSD, 5073c609719bSwdenk 4.4BSD, Linux, SVR4, Esix, Solaris, Irix, SCO, Dell, NCR, VxWorks, 5074f5ed9e39SPeter Tyser LynxOS, pSOS, QNX, RTEMS, INTEGRITY; 5075f5ed9e39SPeter Tyser Currently supported: Linux, NetBSD, VxWorks, QNX, RTEMS, LynxOS, 5076f5ed9e39SPeter Tyser INTEGRITY). 50777b64fef3SWolfgang Denk* Target CPU Architecture (Provisions for Alpha, ARM, AVR32, Intel x86, 5078afc1ce82SMacpaul Lin IA64, MIPS, NDS32, Nios II, PowerPC, IBM S390, SuperH, Sparc, Sparc 64 Bit; 5079afc1ce82SMacpaul Lin Currently supported: ARM, AVR32, Intel x86, MIPS, NDS32, Nios II, PowerPC). 5080c29fdfc1Swdenk* Compression Type (uncompressed, gzip, bzip2) 5081c609719bSwdenk* Load Address 5082c609719bSwdenk* Entry Point 5083c609719bSwdenk* Image Name 5084c609719bSwdenk* Image Timestamp 5085c609719bSwdenk 5086c609719bSwdenkThe header is marked by a special Magic Number, and both the header 5087c609719bSwdenkand the data portions of the image are secured against corruption by 5088c609719bSwdenkCRC32 checksums. 5089c609719bSwdenk 5090c609719bSwdenk 5091c609719bSwdenkLinux Support: 5092c609719bSwdenk============== 5093c609719bSwdenk 5094c609719bSwdenkAlthough U-Boot should support any OS or standalone application 50957152b1d0Swdenkeasily, the main focus has always been on Linux during the design of 5096c609719bSwdenkU-Boot. 5097c609719bSwdenk 5098c609719bSwdenkU-Boot includes many features that so far have been part of some 5099c609719bSwdenkspecial "boot loader" code within the Linux kernel. Also, any 5100c609719bSwdenk"initrd" images to be used are no longer part of one big Linux image; 5101c609719bSwdenkinstead, kernel and "initrd" are separate images. This implementation 51027152b1d0Swdenkserves several purposes: 5103c609719bSwdenk 5104c609719bSwdenk- the same features can be used for other OS or standalone 5105c609719bSwdenk applications (for instance: using compressed images to reduce the 5106c609719bSwdenk Flash memory footprint) 5107c609719bSwdenk 5108c609719bSwdenk- it becomes much easier to port new Linux kernel versions because 51097152b1d0Swdenk lots of low-level, hardware dependent stuff are done by U-Boot 5110c609719bSwdenk 5111c609719bSwdenk- the same Linux kernel image can now be used with different "initrd" 5112c609719bSwdenk images; of course this also means that different kernel images can 5113c609719bSwdenk be run with the same "initrd". This makes testing easier (you don't 5114c609719bSwdenk have to build a new "zImage.initrd" Linux image when you just 5115c609719bSwdenk change a file in your "initrd"). Also, a field-upgrade of the 5116c609719bSwdenk software is easier now. 5117c609719bSwdenk 5118c609719bSwdenk 5119c609719bSwdenkLinux HOWTO: 5120c609719bSwdenk============ 5121c609719bSwdenk 5122c609719bSwdenkPorting Linux to U-Boot based systems: 5123c609719bSwdenk--------------------------------------- 5124c609719bSwdenk 5125c609719bSwdenkU-Boot cannot save you from doing all the necessary modifications to 5126c609719bSwdenkconfigure the Linux device drivers for use with your target hardware 5127c609719bSwdenk(no, we don't intend to provide a full virtual machine interface to 5128c609719bSwdenkLinux :-). 5129c609719bSwdenk 5130a47a12beSStefan RoeseBut now you can ignore ALL boot loader code (in arch/powerpc/mbxboot). 5131c609719bSwdenk 5132c609719bSwdenkJust make sure your machine specific header file (for instance 5133c609719bSwdenkinclude/asm-ppc/tqm8xx.h) includes the same definition of the Board 51341dc30693SMarkus HeidelbergInformation structure as we define in include/asm-<arch>/u-boot.h, 51351dc30693SMarkus Heidelbergand make sure that your definition of IMAP_ADDR uses the same value 51366d0f6bcfSJean-Christophe PLAGNIOL-VILLARDas your U-Boot configuration in CONFIG_SYS_IMMR. 5137c609719bSwdenk 5138c609719bSwdenk 5139c609719bSwdenkConfiguring the Linux kernel: 5140c609719bSwdenk----------------------------- 5141c609719bSwdenk 5142c609719bSwdenkNo specific requirements for U-Boot. Make sure you have some root 5143c609719bSwdenkdevice (initial ramdisk, NFS) for your target system. 5144c609719bSwdenk 5145c609719bSwdenk 5146c609719bSwdenkBuilding a Linux Image: 5147c609719bSwdenk----------------------- 5148c609719bSwdenk 514924ee89b9SwdenkWith U-Boot, "normal" build targets like "zImage" or "bzImage" are 515024ee89b9Swdenknot used. If you use recent kernel source, a new build target 515124ee89b9Swdenk"uImage" will exist which automatically builds an image usable by 515224ee89b9SwdenkU-Boot. Most older kernels also have support for a "pImage" target, 515324ee89b9Swdenkwhich was introduced for our predecessor project PPCBoot and uses a 515424ee89b9Swdenk100% compatible format. 5155c609719bSwdenk 5156c609719bSwdenkExample: 5157c609719bSwdenk 5158c609719bSwdenk make TQM850L_config 5159c609719bSwdenk make oldconfig 5160c609719bSwdenk make dep 516124ee89b9Swdenk make uImage 5162c609719bSwdenk 516324ee89b9SwdenkThe "uImage" build target uses a special tool (in 'tools/mkimage') to 516424ee89b9Swdenkencapsulate a compressed Linux kernel image with header information, 516524ee89b9SwdenkCRC32 checksum etc. for use with U-Boot. This is what we are doing: 5166c609719bSwdenk 516724ee89b9Swdenk* build a standard "vmlinux" kernel image (in ELF binary format): 516824ee89b9Swdenk 516924ee89b9Swdenk* convert the kernel into a raw binary image: 517024ee89b9Swdenk 517124ee89b9Swdenk ${CROSS_COMPILE}-objcopy -O binary \ 517224ee89b9Swdenk -R .note -R .comment \ 517324ee89b9Swdenk -S vmlinux linux.bin 517424ee89b9Swdenk 517524ee89b9Swdenk* compress the binary image: 517624ee89b9Swdenk 517724ee89b9Swdenk gzip -9 linux.bin 517824ee89b9Swdenk 517924ee89b9Swdenk* package compressed binary image for U-Boot: 518024ee89b9Swdenk 518124ee89b9Swdenk mkimage -A ppc -O linux -T kernel -C gzip \ 518224ee89b9Swdenk -a 0 -e 0 -n "Linux Kernel Image" \ 518324ee89b9Swdenk -d linux.bin.gz uImage 518424ee89b9Swdenk 518524ee89b9Swdenk 518624ee89b9SwdenkThe "mkimage" tool can also be used to create ramdisk images for use 518724ee89b9Swdenkwith U-Boot, either separated from the Linux kernel image, or 518824ee89b9Swdenkcombined into one file. "mkimage" encapsulates the images with a 64 518924ee89b9Swdenkbyte header containing information about target architecture, 519024ee89b9Swdenkoperating system, image type, compression method, entry points, time 519124ee89b9Swdenkstamp, CRC32 checksums, etc. 519224ee89b9Swdenk 519324ee89b9Swdenk"mkimage" can be called in two ways: to verify existing images and 519424ee89b9Swdenkprint the header information, or to build new images. 5195c609719bSwdenk 5196c609719bSwdenkIn the first form (with "-l" option) mkimage lists the information 5197c609719bSwdenkcontained in the header of an existing U-Boot image; this includes 5198c609719bSwdenkchecksum verification: 5199c609719bSwdenk 5200c609719bSwdenk tools/mkimage -l image 5201c609719bSwdenk -l ==> list image header information 5202c609719bSwdenk 5203c609719bSwdenkThe second form (with "-d" option) is used to build a U-Boot image 5204c609719bSwdenkfrom a "data file" which is used as image payload: 5205c609719bSwdenk 5206c609719bSwdenk tools/mkimage -A arch -O os -T type -C comp -a addr -e ep \ 5207c609719bSwdenk -n name -d data_file image 5208c609719bSwdenk -A ==> set architecture to 'arch' 5209c609719bSwdenk -O ==> set operating system to 'os' 5210c609719bSwdenk -T ==> set image type to 'type' 5211c609719bSwdenk -C ==> set compression type 'comp' 5212c609719bSwdenk -a ==> set load address to 'addr' (hex) 5213c609719bSwdenk -e ==> set entry point to 'ep' (hex) 5214c609719bSwdenk -n ==> set image name to 'name' 5215c609719bSwdenk -d ==> use image data from 'datafile' 5216c609719bSwdenk 521769459791SwdenkRight now, all Linux kernels for PowerPC systems use the same load 521869459791Swdenkaddress (0x00000000), but the entry point address depends on the 521969459791Swdenkkernel version: 5220c609719bSwdenk 5221c609719bSwdenk- 2.2.x kernels have the entry point at 0x0000000C, 522224ee89b9Swdenk- 2.3.x and later kernels have the entry point at 0x00000000. 5223c609719bSwdenk 5224c609719bSwdenkSo a typical call to build a U-Boot image would read: 5225c609719bSwdenk 522624ee89b9Swdenk -> tools/mkimage -n '2.4.4 kernel for TQM850L' \ 522724ee89b9Swdenk > -A ppc -O linux -T kernel -C gzip -a 0 -e 0 \ 5228a47a12beSStefan Roese > -d /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux.gz \ 522924ee89b9Swdenk > examples/uImage.TQM850L 523024ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5231c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5232c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5233c609719bSwdenk Data Size: 335725 Bytes = 327.86 kB = 0.32 MB 5234c609719bSwdenk Load Address: 0x00000000 523524ee89b9Swdenk Entry Point: 0x00000000 5236c609719bSwdenk 5237c609719bSwdenkTo verify the contents of the image (or check for corruption): 5238c609719bSwdenk 523924ee89b9Swdenk -> tools/mkimage -l examples/uImage.TQM850L 524024ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5241c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5242c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5243c609719bSwdenk Data Size: 335725 Bytes = 327.86 kB = 0.32 MB 5244c609719bSwdenk Load Address: 0x00000000 524524ee89b9Swdenk Entry Point: 0x00000000 5246c609719bSwdenk 5247c609719bSwdenkNOTE: for embedded systems where boot time is critical you can trade 5248c609719bSwdenkspeed for memory and install an UNCOMPRESSED image instead: this 5249c609719bSwdenkneeds more space in Flash, but boots much faster since it does not 5250c609719bSwdenkneed to be uncompressed: 5251c609719bSwdenk 5252a47a12beSStefan Roese -> gunzip /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux.gz 525324ee89b9Swdenk -> tools/mkimage -n '2.4.4 kernel for TQM850L' \ 525424ee89b9Swdenk > -A ppc -O linux -T kernel -C none -a 0 -e 0 \ 5255a47a12beSStefan Roese > -d /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux \ 525624ee89b9Swdenk > examples/uImage.TQM850L-uncompressed 525724ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5258c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5259c609719bSwdenk Image Type: PowerPC Linux Kernel Image (uncompressed) 5260c609719bSwdenk Data Size: 792160 Bytes = 773.59 kB = 0.76 MB 5261c609719bSwdenk Load Address: 0x00000000 526224ee89b9Swdenk Entry Point: 0x00000000 5263c609719bSwdenk 5264c609719bSwdenk 5265c609719bSwdenkSimilar you can build U-Boot images from a 'ramdisk.image.gz' file 5266c609719bSwdenkwhen your kernel is intended to use an initial ramdisk: 5267c609719bSwdenk 5268c609719bSwdenk -> tools/mkimage -n 'Simple Ramdisk Image' \ 5269c609719bSwdenk > -A ppc -O linux -T ramdisk -C gzip \ 5270c609719bSwdenk > -d /LinuxPPC/images/SIMPLE-ramdisk.image.gz examples/simple-initrd 5271c609719bSwdenk Image Name: Simple Ramdisk Image 5272c609719bSwdenk Created: Wed Jan 12 14:01:50 2000 5273c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5274c609719bSwdenk Data Size: 566530 Bytes = 553.25 kB = 0.54 MB 5275c609719bSwdenk Load Address: 0x00000000 5276c609719bSwdenk Entry Point: 0x00000000 5277c609719bSwdenk 5278a804b5ceSGuilherme Maciel FerreiraThe "dumpimage" is a tool to disassemble images built by mkimage. Its "-i" 5279a804b5ceSGuilherme Maciel Ferreiraoption performs the converse operation of the mkimage's second form (the "-d" 5280a804b5ceSGuilherme Maciel Ferreiraoption). Given an image built by mkimage, the dumpimage extracts a "data file" 5281a804b5ceSGuilherme Maciel Ferreirafrom the image: 5282a804b5ceSGuilherme Maciel Ferreira 5283a804b5ceSGuilherme Maciel Ferreira tools/dumpimage -i image -p position data_file 5284a804b5ceSGuilherme Maciel Ferreira -i ==> extract from the 'image' a specific 'data_file', \ 5285a804b5ceSGuilherme Maciel Ferreira indexed by 'position' 5286a804b5ceSGuilherme Maciel Ferreira 5287c609719bSwdenk 5288c609719bSwdenkInstalling a Linux Image: 5289c609719bSwdenk------------------------- 5290c609719bSwdenk 5291c609719bSwdenkTo downloading a U-Boot image over the serial (console) interface, 5292c609719bSwdenkyou must convert the image to S-Record format: 5293c609719bSwdenk 5294c609719bSwdenk objcopy -I binary -O srec examples/image examples/image.srec 5295c609719bSwdenk 5296c609719bSwdenkThe 'objcopy' does not understand the information in the U-Boot 5297c609719bSwdenkimage header, so the resulting S-Record file will be relative to 5298c609719bSwdenkaddress 0x00000000. To load it to a given address, you need to 5299c609719bSwdenkspecify the target address as 'offset' parameter with the 'loads' 5300c609719bSwdenkcommand. 5301c609719bSwdenk 5302c609719bSwdenkExample: install the image to address 0x40100000 (which on the 5303c609719bSwdenkTQM8xxL is in the first Flash bank): 5304c609719bSwdenk 5305c609719bSwdenk => erase 40100000 401FFFFF 5306c609719bSwdenk 5307c609719bSwdenk .......... done 5308c609719bSwdenk Erased 8 sectors 5309c609719bSwdenk 5310c609719bSwdenk => loads 40100000 5311c609719bSwdenk ## Ready for S-Record download ... 5312c609719bSwdenk ~>examples/image.srec 5313c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 12 13 ... 5314c609719bSwdenk ... 5315c609719bSwdenk 15989 15990 15991 15992 5316c609719bSwdenk [file transfer complete] 5317c609719bSwdenk [connected] 5318c609719bSwdenk ## Start Addr = 0x00000000 5319c609719bSwdenk 5320c609719bSwdenk 5321c609719bSwdenkYou can check the success of the download using the 'iminfo' command; 5322c609719bSwdenkthis includes a checksum verification so you can be sure no data 5323c609719bSwdenkcorruption happened: 5324c609719bSwdenk 5325c609719bSwdenk => imi 40100000 5326c609719bSwdenk 5327c609719bSwdenk ## Checking Image at 40100000 ... 5328c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5329c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5330c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5331c609719bSwdenk Load Address: 00000000 5332c609719bSwdenk Entry Point: 0000000c 5333c609719bSwdenk Verifying Checksum ... OK 5334c609719bSwdenk 5335c609719bSwdenk 5336c609719bSwdenkBoot Linux: 5337c609719bSwdenk----------- 5338c609719bSwdenk 5339c609719bSwdenkThe "bootm" command is used to boot an application that is stored in 5340c609719bSwdenkmemory (RAM or Flash). In case of a Linux kernel image, the contents 5341c609719bSwdenkof the "bootargs" environment variable is passed to the kernel as 5342c609719bSwdenkparameters. You can check and modify this variable using the 5343c609719bSwdenk"printenv" and "setenv" commands: 5344c609719bSwdenk 5345c609719bSwdenk 5346c609719bSwdenk => printenv bootargs 5347c609719bSwdenk bootargs=root=/dev/ram 5348c609719bSwdenk 5349c609719bSwdenk => setenv bootargs root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5350c609719bSwdenk 5351c609719bSwdenk => printenv bootargs 5352c609719bSwdenk bootargs=root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5353c609719bSwdenk 5354c609719bSwdenk => bootm 40020000 5355c609719bSwdenk ## Booting Linux kernel at 40020000 ... 5356c609719bSwdenk Image Name: 2.2.13 for NFS on TQM850L 5357c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5358c609719bSwdenk Data Size: 381681 Bytes = 372 kB = 0 MB 5359c609719bSwdenk Load Address: 00000000 5360c609719bSwdenk Entry Point: 0000000c 5361c609719bSwdenk Verifying Checksum ... OK 5362c609719bSwdenk Uncompressing Kernel Image ... OK 5363c609719bSwdenk 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 5364c609719bSwdenk Boot arguments: root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5365c609719bSwdenk time_init: decrementer frequency = 187500000/60 5366c609719bSwdenk Calibrating delay loop... 49.77 BogoMIPS 5367c609719bSwdenk Memory: 15208k available (700k kernel code, 444k data, 32k init) [c0000000,c1000000] 5368c609719bSwdenk ... 5369c609719bSwdenk 537011ccc33fSMarcel ZiswilerIf you want to boot a Linux kernel with initial RAM disk, you pass 53717152b1d0Swdenkthe memory addresses of both the kernel and the initrd image (PPBCOOT 5372c609719bSwdenkformat!) to the "bootm" command: 5373c609719bSwdenk 5374c609719bSwdenk => imi 40100000 40200000 5375c609719bSwdenk 5376c609719bSwdenk ## Checking Image at 40100000 ... 5377c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5378c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5379c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5380c609719bSwdenk Load Address: 00000000 5381c609719bSwdenk Entry Point: 0000000c 5382c609719bSwdenk Verifying Checksum ... OK 5383c609719bSwdenk 5384c609719bSwdenk ## Checking Image at 40200000 ... 5385c609719bSwdenk Image Name: Simple Ramdisk Image 5386c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5387c609719bSwdenk Data Size: 566530 Bytes = 553 kB = 0 MB 5388c609719bSwdenk Load Address: 00000000 5389c609719bSwdenk Entry Point: 00000000 5390c609719bSwdenk Verifying Checksum ... OK 5391c609719bSwdenk 5392c609719bSwdenk => bootm 40100000 40200000 5393c609719bSwdenk ## Booting Linux kernel at 40100000 ... 5394c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5395c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5396c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5397c609719bSwdenk Load Address: 00000000 5398c609719bSwdenk Entry Point: 0000000c 5399c609719bSwdenk Verifying Checksum ... OK 5400c609719bSwdenk Uncompressing Kernel Image ... OK 5401c609719bSwdenk ## Loading RAMDisk Image at 40200000 ... 5402c609719bSwdenk Image Name: Simple Ramdisk Image 5403c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5404c609719bSwdenk Data Size: 566530 Bytes = 553 kB = 0 MB 5405c609719bSwdenk Load Address: 00000000 5406c609719bSwdenk Entry Point: 00000000 5407c609719bSwdenk Verifying Checksum ... OK 5408c609719bSwdenk Loading Ramdisk ... OK 5409c609719bSwdenk 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 5410c609719bSwdenk Boot arguments: root=/dev/ram 5411c609719bSwdenk time_init: decrementer frequency = 187500000/60 5412c609719bSwdenk Calibrating delay loop... 49.77 BogoMIPS 5413c609719bSwdenk ... 5414c609719bSwdenk RAMDISK: Compressed image found at block 0 5415c609719bSwdenk VFS: Mounted root (ext2 filesystem). 5416c609719bSwdenk 5417c609719bSwdenk bash# 5418c609719bSwdenk 54190267768eSMatthew McClintockBoot Linux and pass a flat device tree: 54200267768eSMatthew McClintock----------- 54210267768eSMatthew McClintock 54220267768eSMatthew McClintockFirst, U-Boot must be compiled with the appropriate defines. See the section 54230267768eSMatthew McClintocktitled "Linux Kernel Interface" above for a more in depth explanation. The 54240267768eSMatthew McClintockfollowing is an example of how to start a kernel and pass an updated 54250267768eSMatthew McClintockflat device tree: 54260267768eSMatthew McClintock 54270267768eSMatthew McClintock=> print oftaddr 54280267768eSMatthew McClintockoftaddr=0x300000 54290267768eSMatthew McClintock=> print oft 54300267768eSMatthew McClintockoft=oftrees/mpc8540ads.dtb 54310267768eSMatthew McClintock=> tftp $oftaddr $oft 54320267768eSMatthew McClintockSpeed: 1000, full duplex 54330267768eSMatthew McClintockUsing TSEC0 device 54340267768eSMatthew McClintockTFTP from server 192.168.1.1; our IP address is 192.168.1.101 54350267768eSMatthew McClintockFilename 'oftrees/mpc8540ads.dtb'. 54360267768eSMatthew McClintockLoad address: 0x300000 54370267768eSMatthew McClintockLoading: # 54380267768eSMatthew McClintockdone 54390267768eSMatthew McClintockBytes transferred = 4106 (100a hex) 54400267768eSMatthew McClintock=> tftp $loadaddr $bootfile 54410267768eSMatthew McClintockSpeed: 1000, full duplex 54420267768eSMatthew McClintockUsing TSEC0 device 54430267768eSMatthew McClintockTFTP from server 192.168.1.1; our IP address is 192.168.1.2 54440267768eSMatthew McClintockFilename 'uImage'. 54450267768eSMatthew McClintockLoad address: 0x200000 54460267768eSMatthew McClintockLoading:############ 54470267768eSMatthew McClintockdone 54480267768eSMatthew McClintockBytes transferred = 1029407 (fb51f hex) 54490267768eSMatthew McClintock=> print loadaddr 54500267768eSMatthew McClintockloadaddr=200000 54510267768eSMatthew McClintock=> print oftaddr 54520267768eSMatthew McClintockoftaddr=0x300000 54530267768eSMatthew McClintock=> bootm $loadaddr - $oftaddr 54540267768eSMatthew McClintock## Booting image at 00200000 ... 54550267768eSMatthew McClintock Image Name: Linux-2.6.17-dirty 54560267768eSMatthew McClintock Image Type: PowerPC Linux Kernel Image (gzip compressed) 54570267768eSMatthew McClintock Data Size: 1029343 Bytes = 1005.2 kB 54580267768eSMatthew McClintock Load Address: 00000000 54590267768eSMatthew McClintock Entry Point: 00000000 54600267768eSMatthew McClintock Verifying Checksum ... OK 54610267768eSMatthew McClintock Uncompressing Kernel Image ... OK 54620267768eSMatthew McClintockBooting using flat device tree at 0x300000 54630267768eSMatthew McClintockUsing MPC85xx ADS machine description 54640267768eSMatthew McClintockMemory CAM mapping: CAM0=256Mb, CAM1=256Mb, CAM2=0Mb residual: 0Mb 54650267768eSMatthew McClintock[snip] 54660267768eSMatthew McClintock 54670267768eSMatthew McClintock 54686069ff26SwdenkMore About U-Boot Image Types: 54696069ff26Swdenk------------------------------ 54706069ff26Swdenk 54716069ff26SwdenkU-Boot supports the following image types: 54726069ff26Swdenk 54736069ff26Swdenk "Standalone Programs" are directly runnable in the environment 54746069ff26Swdenk provided by U-Boot; it is expected that (if they behave 54756069ff26Swdenk well) you can continue to work in U-Boot after return from 54766069ff26Swdenk the Standalone Program. 54776069ff26Swdenk "OS Kernel Images" are usually images of some Embedded OS which 54786069ff26Swdenk will take over control completely. Usually these programs 54796069ff26Swdenk will install their own set of exception handlers, device 54806069ff26Swdenk drivers, set up the MMU, etc. - this means, that you cannot 54816069ff26Swdenk expect to re-enter U-Boot except by resetting the CPU. 54826069ff26Swdenk "RAMDisk Images" are more or less just data blocks, and their 54836069ff26Swdenk parameters (address, size) are passed to an OS kernel that is 54846069ff26Swdenk being started. 54856069ff26Swdenk "Multi-File Images" contain several images, typically an OS 54866069ff26Swdenk (Linux) kernel image and one or more data images like 54876069ff26Swdenk RAMDisks. This construct is useful for instance when you want 54886069ff26Swdenk to boot over the network using BOOTP etc., where the boot 54896069ff26Swdenk server provides just a single image file, but you want to get 54906069ff26Swdenk for instance an OS kernel and a RAMDisk image. 54916069ff26Swdenk 54926069ff26Swdenk "Multi-File Images" start with a list of image sizes, each 54936069ff26Swdenk image size (in bytes) specified by an "uint32_t" in network 54946069ff26Swdenk byte order. This list is terminated by an "(uint32_t)0". 54956069ff26Swdenk Immediately after the terminating 0 follow the images, one by 54966069ff26Swdenk one, all aligned on "uint32_t" boundaries (size rounded up to 54976069ff26Swdenk a multiple of 4 bytes). 54986069ff26Swdenk 54996069ff26Swdenk "Firmware Images" are binary images containing firmware (like 55006069ff26Swdenk U-Boot or FPGA images) which usually will be programmed to 55016069ff26Swdenk flash memory. 55026069ff26Swdenk 55036069ff26Swdenk "Script files" are command sequences that will be executed by 55046069ff26Swdenk U-Boot's command interpreter; this feature is especially 55056069ff26Swdenk useful when you configure U-Boot to use a real shell (hush) 55066069ff26Swdenk as command interpreter. 55076069ff26Swdenk 550844f074c7SMarek VasutBooting the Linux zImage: 550944f074c7SMarek Vasut------------------------- 551044f074c7SMarek Vasut 551144f074c7SMarek VasutOn some platforms, it's possible to boot Linux zImage. This is done 551244f074c7SMarek Vasutusing the "bootz" command. The syntax of "bootz" command is the same 551344f074c7SMarek Vasutas the syntax of "bootm" command. 551444f074c7SMarek Vasut 55158ac28563STom RiniNote, defining the CONFIG_SUPPORT_RAW_INITRD allows user to supply 5516017e1f3fSMarek Vasutkernel with raw initrd images. The syntax is slightly different, the 5517017e1f3fSMarek Vasutaddress of the initrd must be augmented by it's size, in the following 5518017e1f3fSMarek Vasutformat: "<initrd addres>:<initrd size>". 5519017e1f3fSMarek Vasut 5520c609719bSwdenk 5521c609719bSwdenkStandalone HOWTO: 5522c609719bSwdenk================= 5523c609719bSwdenk 5524c609719bSwdenkOne of the features of U-Boot is that you can dynamically load and 5525c609719bSwdenkrun "standalone" applications, which can use some resources of 5526c609719bSwdenkU-Boot like console I/O functions or interrupt services. 5527c609719bSwdenk 5528c609719bSwdenkTwo simple examples are included with the sources: 5529c609719bSwdenk 5530c609719bSwdenk"Hello World" Demo: 5531c609719bSwdenk------------------- 5532c609719bSwdenk 5533c609719bSwdenk'examples/hello_world.c' contains a small "Hello World" Demo 5534c609719bSwdenkapplication; it is automatically compiled when you build U-Boot. 5535c609719bSwdenkIt's configured to run at address 0x00040004, so you can play with it 5536c609719bSwdenklike that: 5537c609719bSwdenk 5538c609719bSwdenk => loads 5539c609719bSwdenk ## Ready for S-Record download ... 5540c609719bSwdenk ~>examples/hello_world.srec 5541c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 ... 5542c609719bSwdenk [file transfer complete] 5543c609719bSwdenk [connected] 5544c609719bSwdenk ## Start Addr = 0x00040004 5545c609719bSwdenk 5546c609719bSwdenk => go 40004 Hello World! This is a test. 5547c609719bSwdenk ## Starting application at 0x00040004 ... 5548c609719bSwdenk Hello World 5549c609719bSwdenk argc = 7 5550c609719bSwdenk argv[0] = "40004" 5551c609719bSwdenk argv[1] = "Hello" 5552c609719bSwdenk argv[2] = "World!" 5553c609719bSwdenk argv[3] = "This" 5554c609719bSwdenk argv[4] = "is" 5555c609719bSwdenk argv[5] = "a" 5556c609719bSwdenk argv[6] = "test." 5557c609719bSwdenk argv[7] = "<NULL>" 5558c609719bSwdenk Hit any key to exit ... 5559c609719bSwdenk 5560c609719bSwdenk ## Application terminated, rc = 0x0 5561c609719bSwdenk 5562c609719bSwdenkAnother example, which demonstrates how to register a CPM interrupt 5563c609719bSwdenkhandler with the U-Boot code, can be found in 'examples/timer.c'. 5564c609719bSwdenkHere, a CPM timer is set up to generate an interrupt every second. 5565c609719bSwdenkThe interrupt service routine is trivial, just printing a '.' 5566c609719bSwdenkcharacter, but this is just a demo program. The application can be 5567c609719bSwdenkcontrolled by the following keys: 5568c609719bSwdenk 5569c609719bSwdenk ? - print current values og the CPM Timer registers 5570c609719bSwdenk b - enable interrupts and start timer 5571c609719bSwdenk e - stop timer and disable interrupts 5572c609719bSwdenk q - quit application 5573c609719bSwdenk 5574c609719bSwdenk => loads 5575c609719bSwdenk ## Ready for S-Record download ... 5576c609719bSwdenk ~>examples/timer.srec 5577c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 ... 5578c609719bSwdenk [file transfer complete] 5579c609719bSwdenk [connected] 5580c609719bSwdenk ## Start Addr = 0x00040004 5581c609719bSwdenk 5582c609719bSwdenk => go 40004 5583c609719bSwdenk ## Starting application at 0x00040004 ... 5584c609719bSwdenk TIMERS=0xfff00980 5585c609719bSwdenk Using timer 1 5586c609719bSwdenk tgcr @ 0xfff00980, tmr @ 0xfff00990, trr @ 0xfff00994, tcr @ 0xfff00998, tcn @ 0xfff0099c, ter @ 0xfff009b0 5587c609719bSwdenk 5588c609719bSwdenkHit 'b': 5589c609719bSwdenk [q, b, e, ?] Set interval 1000000 us 5590c609719bSwdenk Enabling timer 5591c609719bSwdenkHit '?': 5592c609719bSwdenk [q, b, e, ?] ........ 5593c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0xef6, ter=0x0 5594c609719bSwdenkHit '?': 5595c609719bSwdenk [q, b, e, ?] . 5596c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x2ad4, ter=0x0 5597c609719bSwdenkHit '?': 5598c609719bSwdenk [q, b, e, ?] . 5599c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x1efc, ter=0x0 5600c609719bSwdenkHit '?': 5601c609719bSwdenk [q, b, e, ?] . 5602c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x169d, ter=0x0 5603c609719bSwdenkHit 'e': 5604c609719bSwdenk [q, b, e, ?] ...Stopping timer 5605c609719bSwdenkHit 'q': 5606c609719bSwdenk [q, b, e, ?] ## Application terminated, rc = 0x0 5607c609719bSwdenk 5608c609719bSwdenk 560985ec0bccSwdenkMinicom warning: 561085ec0bccSwdenk================ 561185ec0bccSwdenk 56127152b1d0SwdenkOver time, many people have reported problems when trying to use the 561385ec0bccSwdenk"minicom" terminal emulation program for serial download. I (wd) 561485ec0bccSwdenkconsider minicom to be broken, and recommend not to use it. Under 5615f07771ccSwdenkUnix, I recommend to use C-Kermit for general purpose use (and 561685ec0bccSwdenkespecially for kermit binary protocol download ("loadb" command), and 5617e53515a2SKarl O. Pincuse "cu" for S-Record download ("loads" command). See 5618e53515a2SKarl O. Pinchttp://www.denx.de/wiki/view/DULG/SystemSetup#Section_4.3. 5619e53515a2SKarl O. Pincfor help with kermit. 5620e53515a2SKarl O. Pinc 562185ec0bccSwdenk 562252f52c14SwdenkNevertheless, if you absolutely want to use it try adding this 562352f52c14Swdenkconfiguration to your "File transfer protocols" section: 562452f52c14Swdenk 562552f52c14Swdenk Name Program Name U/D FullScr IO-Red. Multi 562652f52c14Swdenk X kermit /usr/bin/kermit -i -l %l -s Y U Y N N 562752f52c14Swdenk Y kermit /usr/bin/kermit -i -l %l -r N D Y N N 562852f52c14Swdenk 562952f52c14Swdenk 5630c609719bSwdenkNetBSD Notes: 5631c609719bSwdenk============= 5632c609719bSwdenk 5633c609719bSwdenkStarting at version 0.9.2, U-Boot supports NetBSD both as host 5634c609719bSwdenk(build U-Boot) and target system (boots NetBSD/mpc8xx). 5635c609719bSwdenk 5636c609719bSwdenkBuilding requires a cross environment; it is known to work on 5637c609719bSwdenkNetBSD/i386 with the cross-powerpc-netbsd-1.3 package (you will also 5638c609719bSwdenkneed gmake since the Makefiles are not compatible with BSD make). 5639c609719bSwdenkNote that the cross-powerpc package does not install include files; 5640c609719bSwdenkattempting to build U-Boot will fail because <machine/ansi.h> is 5641c609719bSwdenkmissing. This file has to be installed and patched manually: 5642c609719bSwdenk 5643c609719bSwdenk # cd /usr/pkg/cross/powerpc-netbsd/include 5644c609719bSwdenk # mkdir powerpc 5645c609719bSwdenk # ln -s powerpc machine 5646c609719bSwdenk # cp /usr/src/sys/arch/powerpc/include/ansi.h powerpc/ansi.h 5647c609719bSwdenk # ${EDIT} powerpc/ansi.h ## must remove __va_list, _BSD_VA_LIST 5648c609719bSwdenk 5649c609719bSwdenkNative builds *don't* work due to incompatibilities between native 5650c609719bSwdenkand U-Boot include files. 5651c609719bSwdenk 5652c609719bSwdenkBooting assumes that (the first part of) the image booted is a 5653c609719bSwdenkstage-2 loader which in turn loads and then invokes the kernel 5654c609719bSwdenkproper. Loader sources will eventually appear in the NetBSD source 5655c609719bSwdenktree (probably in sys/arc/mpc8xx/stand/u-boot_stage2/); in the 56562a8af187Swdenkmeantime, see ftp://ftp.denx.de/pub/u-boot/ppcboot_stage2.tar.gz 5657c609719bSwdenk 5658c609719bSwdenk 5659c609719bSwdenkImplementation Internals: 5660c609719bSwdenk========================= 5661c609719bSwdenk 5662c609719bSwdenkThe following is not intended to be a complete description of every 5663c609719bSwdenkimplementation detail. However, it should help to understand the 5664c609719bSwdenkinner workings of U-Boot and make it easier to port it to custom 5665c609719bSwdenkhardware. 5666c609719bSwdenk 5667c609719bSwdenk 5668c609719bSwdenkInitial Stack, Global Data: 5669c609719bSwdenk--------------------------- 5670c609719bSwdenk 5671c609719bSwdenkThe implementation of U-Boot is complicated by the fact that U-Boot 5672c609719bSwdenkstarts running out of ROM (flash memory), usually without access to 5673c609719bSwdenksystem RAM (because the memory controller is not initialized yet). 5674c609719bSwdenkThis means that we don't have writable Data or BSS segments, and BSS 5675c609719bSwdenkis not initialized as zero. To be able to get a C environment working 5676c609719bSwdenkat all, we have to allocate at least a minimal stack. Implementation 5677c609719bSwdenkoptions for this are defined and restricted by the CPU used: Some CPU 5678c609719bSwdenkmodels provide on-chip memory (like the IMMR area on MPC8xx and 5679c609719bSwdenkMPC826x processors), on others (parts of) the data cache can be 5680c609719bSwdenklocked as (mis-) used as memory, etc. 5681c609719bSwdenk 56827152b1d0Swdenk Chris Hallinan posted a good summary of these issues to the 56830668236bSWolfgang Denk U-Boot mailing list: 568443d9616cSwdenk 568543d9616cSwdenk Subject: RE: [U-Boot-Users] RE: More On Memory Bank x (nothingness)? 568643d9616cSwdenk From: "Chris Hallinan" <clh@net1plus.com> 568743d9616cSwdenk Date: Mon, 10 Feb 2003 16:43:46 -0500 (22:43 MET) 568843d9616cSwdenk ... 568943d9616cSwdenk 569043d9616cSwdenk Correct me if I'm wrong, folks, but the way I understand it 569143d9616cSwdenk is this: Using DCACHE as initial RAM for Stack, etc, does not 569243d9616cSwdenk require any physical RAM backing up the cache. The cleverness 569343d9616cSwdenk is that the cache is being used as a temporary supply of 569443d9616cSwdenk necessary storage before the SDRAM controller is setup. It's 569511ccc33fSMarcel Ziswiler beyond the scope of this list to explain the details, but you 569643d9616cSwdenk can see how this works by studying the cache architecture and 569743d9616cSwdenk operation in the architecture and processor-specific manuals. 569843d9616cSwdenk 569943d9616cSwdenk OCM is On Chip Memory, which I believe the 405GP has 4K. It 570043d9616cSwdenk is another option for the system designer to use as an 570111ccc33fSMarcel Ziswiler initial stack/RAM area prior to SDRAM being available. Either 570243d9616cSwdenk option should work for you. Using CS 4 should be fine if your 570343d9616cSwdenk board designers haven't used it for something that would 570443d9616cSwdenk cause you grief during the initial boot! It is frequently not 570543d9616cSwdenk used. 570643d9616cSwdenk 57076d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_RAM_ADDR should be somewhere that won't interfere 570843d9616cSwdenk with your processor/board/system design. The default value 570943d9616cSwdenk you will find in any recent u-boot distribution in 57108a316c9bSStefan Roese walnut.h should work for you. I'd set it to a value larger 571143d9616cSwdenk than your SDRAM module. If you have a 64MB SDRAM module, set 571243d9616cSwdenk it above 400_0000. Just make sure your board has no resources 571343d9616cSwdenk that are supposed to respond to that address! That code in 571443d9616cSwdenk start.S has been around a while and should work as is when 571543d9616cSwdenk you get the config right. 571643d9616cSwdenk 571743d9616cSwdenk -Chris Hallinan 571843d9616cSwdenk DS4.COM, Inc. 571943d9616cSwdenk 5720c609719bSwdenkIt is essential to remember this, since it has some impact on the C 5721c609719bSwdenkcode for the initialization procedures: 5722c609719bSwdenk 5723c609719bSwdenk* Initialized global data (data segment) is read-only. Do not attempt 5724c609719bSwdenk to write it. 5725c609719bSwdenk 572611ccc33fSMarcel Ziswiler* Do not use any uninitialized global data (or implicitely initialized 5727c609719bSwdenk as zero data - BSS segment) at all - this is undefined, initiali- 57287152b1d0Swdenk zation is performed later (when relocating to RAM). 5729c609719bSwdenk 5730c609719bSwdenk* Stack space is very limited. Avoid big data buffers or things like 5731c609719bSwdenk that. 5732c609719bSwdenk 5733c609719bSwdenkHaving only the stack as writable memory limits means we cannot use 5734c609719bSwdenknormal global data to share information beween the code. But it 5735c609719bSwdenkturned out that the implementation of U-Boot can be greatly 5736c609719bSwdenksimplified by making a global data structure (gd_t) available to all 5737c609719bSwdenkfunctions. We could pass a pointer to this data as argument to _all_ 5738c609719bSwdenkfunctions, but this would bloat the code. Instead we use a feature of 5739c609719bSwdenkthe GCC compiler (Global Register Variables) to share the data: we 5740c609719bSwdenkplace a pointer (gd) to the global data into a register which we 5741c609719bSwdenkreserve for this purpose. 5742c609719bSwdenk 57437152b1d0SwdenkWhen choosing a register for such a purpose we are restricted by the 5744c609719bSwdenkrelevant (E)ABI specifications for the current architecture, and by 5745c609719bSwdenkGCC's implementation. 5746c609719bSwdenk 5747c609719bSwdenkFor PowerPC, the following registers have specific use: 5748c609719bSwdenk R1: stack pointer 5749e7670f6cSWolfgang Denk R2: reserved for system use 5750c609719bSwdenk R3-R4: parameter passing and return values 5751c609719bSwdenk R5-R10: parameter passing 5752c609719bSwdenk R13: small data area pointer 5753c609719bSwdenk R30: GOT pointer 5754c609719bSwdenk R31: frame pointer 5755c609719bSwdenk 5756e6bee808SJoakim Tjernlund (U-Boot also uses R12 as internal GOT pointer. r12 5757e6bee808SJoakim Tjernlund is a volatile register so r12 needs to be reset when 5758e6bee808SJoakim Tjernlund going back and forth between asm and C) 5759c609719bSwdenk 5760e7670f6cSWolfgang Denk ==> U-Boot will use R2 to hold a pointer to the global data 5761c609719bSwdenk 5762c609719bSwdenk Note: on PPC, we could use a static initializer (since the 5763c609719bSwdenk address of the global data structure is known at compile time), 5764c609719bSwdenk but it turned out that reserving a register results in somewhat 5765c609719bSwdenk smaller code - although the code savings are not that big (on 5766c609719bSwdenk average for all boards 752 bytes for the whole U-Boot image, 5767c609719bSwdenk 624 text + 127 data). 5768c609719bSwdenk 5769c4db335cSRobin GetzOn Blackfin, the normal C ABI (except for P3) is followed as documented here: 57704c58eb55SMike Frysinger http://docs.blackfin.uclinux.org/doku.php?id=application_binary_interface 57714c58eb55SMike Frysinger 5772c4db335cSRobin Getz ==> U-Boot will use P3 to hold a pointer to the global data 57734c58eb55SMike Frysinger 5774c609719bSwdenkOn ARM, the following registers are used: 5775c609719bSwdenk 5776c609719bSwdenk R0: function argument word/integer result 5777c609719bSwdenk R1-R3: function argument word 577812eba1b4SJeroen Hofstee R9: platform specific 577912eba1b4SJeroen Hofstee R10: stack limit (used only if stack checking is enabled) 5780c609719bSwdenk R11: argument (frame) pointer 5781c609719bSwdenk R12: temporary workspace 5782c609719bSwdenk R13: stack pointer 5783c609719bSwdenk R14: link register 5784c609719bSwdenk R15: program counter 5785c609719bSwdenk 578612eba1b4SJeroen Hofstee ==> U-Boot will use R9 to hold a pointer to the global data 578712eba1b4SJeroen Hofstee 578812eba1b4SJeroen Hofstee Note: on ARM, only R_ARM_RELATIVE relocations are supported. 5789c609719bSwdenk 57900df01fd3SThomas ChouOn Nios II, the ABI is documented here: 57910df01fd3SThomas Chou http://www.altera.com/literature/hb/nios2/n2cpu_nii51016.pdf 57920df01fd3SThomas Chou 57930df01fd3SThomas Chou ==> U-Boot will use gp to hold a pointer to the global data 57940df01fd3SThomas Chou 57950df01fd3SThomas Chou Note: on Nios II, we give "-G0" option to gcc and don't use gp 57960df01fd3SThomas Chou to access small data sections, so gp is free. 57970df01fd3SThomas Chou 5798afc1ce82SMacpaul LinOn NDS32, the following registers are used: 5799afc1ce82SMacpaul Lin 5800afc1ce82SMacpaul Lin R0-R1: argument/return 5801afc1ce82SMacpaul Lin R2-R5: argument 5802afc1ce82SMacpaul Lin R15: temporary register for assembler 5803afc1ce82SMacpaul Lin R16: trampoline register 5804afc1ce82SMacpaul Lin R28: frame pointer (FP) 5805afc1ce82SMacpaul Lin R29: global pointer (GP) 5806afc1ce82SMacpaul Lin R30: link register (LP) 5807afc1ce82SMacpaul Lin R31: stack pointer (SP) 5808afc1ce82SMacpaul Lin PC: program counter (PC) 5809afc1ce82SMacpaul Lin 5810afc1ce82SMacpaul Lin ==> U-Boot will use R10 to hold a pointer to the global data 5811afc1ce82SMacpaul Lin 5812d87080b7SWolfgang DenkNOTE: DECLARE_GLOBAL_DATA_PTR must be used with file-global scope, 5813d87080b7SWolfgang Denkor current versions of GCC may "optimize" the code too much. 5814c609719bSwdenk 5815c609719bSwdenkMemory Management: 5816c609719bSwdenk------------------ 5817c609719bSwdenk 5818c609719bSwdenkU-Boot runs in system state and uses physical addresses, i.e. the 5819c609719bSwdenkMMU is not used either for address mapping nor for memory protection. 5820c609719bSwdenk 5821c609719bSwdenkThe available memory is mapped to fixed addresses using the memory 5822c609719bSwdenkcontroller. In this process, a contiguous block is formed for each 5823c609719bSwdenkmemory type (Flash, SDRAM, SRAM), even when it consists of several 5824c609719bSwdenkphysical memory banks. 5825c609719bSwdenk 5826c609719bSwdenkU-Boot is installed in the first 128 kB of the first Flash bank (on 5827c609719bSwdenkTQM8xxL modules this is the range 0x40000000 ... 0x4001FFFF). After 5828c609719bSwdenkbooting and sizing and initializing DRAM, the code relocates itself 5829c609719bSwdenkto the upper end of DRAM. Immediately below the U-Boot code some 58306d0f6bcfSJean-Christophe PLAGNIOL-VILLARDmemory is reserved for use by malloc() [see CONFIG_SYS_MALLOC_LEN 5831c609719bSwdenkconfiguration setting]. Below that, a structure with global Board 5832c609719bSwdenkInfo data is placed, followed by the stack (growing downward). 5833c609719bSwdenk 5834c609719bSwdenkAdditionally, some exception handler code is copied to the low 8 kB 5835c609719bSwdenkof DRAM (0x00000000 ... 0x00001FFF). 5836c609719bSwdenk 5837c609719bSwdenkSo a typical memory configuration with 16 MB of DRAM could look like 5838c609719bSwdenkthis: 5839c609719bSwdenk 5840c609719bSwdenk 0x0000 0000 Exception Vector code 5841c609719bSwdenk : 5842c609719bSwdenk 0x0000 1FFF 5843c609719bSwdenk 0x0000 2000 Free for Application Use 5844c609719bSwdenk : 5845c609719bSwdenk : 5846c609719bSwdenk 5847c609719bSwdenk : 5848c609719bSwdenk : 5849c609719bSwdenk 0x00FB FF20 Monitor Stack (Growing downward) 5850c609719bSwdenk 0x00FB FFAC Board Info Data and permanent copy of global data 5851c609719bSwdenk 0x00FC 0000 Malloc Arena 5852c609719bSwdenk : 5853c609719bSwdenk 0x00FD FFFF 5854c609719bSwdenk 0x00FE 0000 RAM Copy of Monitor Code 5855c609719bSwdenk ... eventually: LCD or video framebuffer 5856c609719bSwdenk ... eventually: pRAM (Protected RAM - unchanged by reset) 5857c609719bSwdenk 0x00FF FFFF [End of RAM] 5858c609719bSwdenk 5859c609719bSwdenk 5860c609719bSwdenkSystem Initialization: 5861c609719bSwdenk---------------------- 5862c609719bSwdenk 5863c609719bSwdenkIn the reset configuration, U-Boot starts at the reset entry point 586411ccc33fSMarcel Ziswiler(on most PowerPC systems at address 0x00000100). Because of the reset 5865c609719bSwdenkconfiguration for CS0# this is a mirror of the onboard Flash memory. 58667152b1d0SwdenkTo be able to re-map memory U-Boot then jumps to its link address. 5867c609719bSwdenkTo be able to implement the initialization code in C, a (small!) 5868c609719bSwdenkinitial stack is set up in the internal Dual Ported RAM (in case CPUs 5869c609719bSwdenkwhich provide such a feature like MPC8xx or MPC8260), or in a locked 5870c609719bSwdenkpart of the data cache. After that, U-Boot initializes the CPU core, 5871c609719bSwdenkthe caches and the SIU. 5872c609719bSwdenk 5873c609719bSwdenkNext, all (potentially) available memory banks are mapped using a 5874c609719bSwdenkpreliminary mapping. For example, we put them on 512 MB boundaries 5875c609719bSwdenk(multiples of 0x20000000: SDRAM on 0x00000000 and 0x20000000, Flash 5876c609719bSwdenkon 0x40000000 and 0x60000000, SRAM on 0x80000000). Then UPM A is 5877c609719bSwdenkprogrammed for SDRAM access. Using the temporary configuration, a 5878c609719bSwdenksimple memory test is run that determines the size of the SDRAM 5879c609719bSwdenkbanks. 5880c609719bSwdenk 5881c609719bSwdenkWhen there is more than one SDRAM bank, and the banks are of 58827152b1d0Swdenkdifferent size, the largest is mapped first. For equal size, the first 5883c609719bSwdenkbank (CS2#) is mapped first. The first mapping is always for address 5884c609719bSwdenk0x00000000, with any additional banks following immediately to create 5885c609719bSwdenkcontiguous memory starting from 0. 5886c609719bSwdenk 5887c609719bSwdenkThen, the monitor installs itself at the upper end of the SDRAM area 5888c609719bSwdenkand allocates memory for use by malloc() and for the global Board 5889c609719bSwdenkInfo data; also, the exception vector code is copied to the low RAM 5890c609719bSwdenkpages, and the final stack is set up. 5891c609719bSwdenk 5892c609719bSwdenkOnly after this relocation will you have a "normal" C environment; 5893c609719bSwdenkuntil that you are restricted in several ways, mostly because you are 5894c609719bSwdenkrunning from ROM, and because the code will have to be relocated to a 5895c609719bSwdenknew address in RAM. 5896c609719bSwdenk 5897c609719bSwdenk 5898c609719bSwdenkU-Boot Porting Guide: 5899c609719bSwdenk---------------------- 5900c609719bSwdenk 5901c609719bSwdenk[Based on messages by Jerry Van Baren in the U-Boot-Users mailing 59026aff3115Swdenklist, October 2002] 5903c609719bSwdenk 5904c609719bSwdenk 5905c609719bSwdenkint main(int argc, char *argv[]) 5906c609719bSwdenk{ 5907c609719bSwdenk sighandler_t no_more_time; 5908c609719bSwdenk 5909c609719bSwdenk signal(SIGALRM, no_more_time); 5910c609719bSwdenk alarm(PROJECT_DEADLINE - toSec (3 * WEEK)); 5911c609719bSwdenk 5912c609719bSwdenk if (available_money > available_manpower) { 59136c3fef28SJerry Van Baren Pay consultant to port U-Boot; 5914c609719bSwdenk return 0; 5915c609719bSwdenk } 5916c609719bSwdenk 5917c609719bSwdenk Download latest U-Boot source; 5918c609719bSwdenk 59190668236bSWolfgang Denk Subscribe to u-boot mailing list; 59206aff3115Swdenk 59216c3fef28SJerry Van Baren if (clueless) 5922c609719bSwdenk email("Hi, I am new to U-Boot, how do I get started?"); 5923c609719bSwdenk 5924c609719bSwdenk while (learning) { 5925c609719bSwdenk Read the README file in the top level directory; 59267cb22f97Swdenk Read http://www.denx.de/twiki/bin/view/DULG/Manual; 59276c3fef28SJerry Van Baren Read applicable doc/*.README; 5928c609719bSwdenk Read the source, Luke; 59296c3fef28SJerry Van Baren /* find . -name "*.[chS]" | xargs grep -i <keyword> */ 5930c609719bSwdenk } 5931c609719bSwdenk 59326c3fef28SJerry Van Baren if (available_money > toLocalCurrency ($2500)) 59336c3fef28SJerry Van Baren Buy a BDI3000; 59346c3fef28SJerry Van Baren else 5935c609719bSwdenk Add a lot of aggravation and time; 5936c609719bSwdenk 59376c3fef28SJerry Van Baren if (a similar board exists) { /* hopefully... */ 59386c3fef28SJerry Van Baren cp -a board/<similar> board/<myboard> 59396c3fef28SJerry Van Baren cp include/configs/<similar>.h include/configs/<myboard>.h 59406c3fef28SJerry Van Baren } else { 5941c609719bSwdenk Create your own board support subdirectory; 59426c3fef28SJerry Van Baren Create your own board include/configs/<myboard>.h file; 59436c3fef28SJerry Van Baren } 59446c3fef28SJerry Van Baren Edit new board/<myboard> files 59456c3fef28SJerry Van Baren Edit new include/configs/<myboard>.h 5946c609719bSwdenk 59476c3fef28SJerry Van Baren while (!accepted) { 5948c609719bSwdenk while (!running) { 5949c609719bSwdenk do { 5950c609719bSwdenk Add / modify source code; 5951c609719bSwdenk } until (compiles); 5952c609719bSwdenk Debug; 5953c609719bSwdenk if (clueless) 5954c609719bSwdenk email("Hi, I am having problems..."); 5955c609719bSwdenk } 59566c3fef28SJerry Van Baren Send patch file to the U-Boot email list; 59576c3fef28SJerry Van Baren if (reasonable critiques) 59586c3fef28SJerry Van Baren Incorporate improvements from email list code review; 59596c3fef28SJerry Van Baren else 59606c3fef28SJerry Van Baren Defend code as written; 59616c3fef28SJerry Van Baren } 5962c609719bSwdenk 5963c609719bSwdenk return 0; 5964c609719bSwdenk} 5965c609719bSwdenk 5966c609719bSwdenkvoid no_more_time (int sig) 5967c609719bSwdenk{ 5968c609719bSwdenk hire_a_guru(); 5969c609719bSwdenk} 5970c609719bSwdenk 5971c609719bSwdenk 5972c609719bSwdenkCoding Standards: 5973c609719bSwdenk----------------- 5974c609719bSwdenk 5975c609719bSwdenkAll contributions to U-Boot should conform to the Linux kernel 59762c051651SDetlev Zundelcoding style; see the file "Documentation/CodingStyle" and the script 59777ca9296eSWolfgang Denk"scripts/Lindent" in your Linux kernel source directory. 5978c609719bSwdenk 59792c051651SDetlev ZundelSource files originating from a different project (for example the 59802c051651SDetlev ZundelMTD subsystem) are generally exempt from these guidelines and are not 59812c051651SDetlev Zundelreformated to ease subsequent migration to newer versions of those 59822c051651SDetlev Zundelsources. 59832c051651SDetlev Zundel 59842c051651SDetlev ZundelPlease note that U-Boot is implemented in C (and to some small parts in 59852c051651SDetlev ZundelAssembler); no C++ is used, so please do not use C++ style comments (//) 59862c051651SDetlev Zundelin your code. 5987c609719bSwdenk 5988c178d3daSwdenkPlease also stick to the following formatting rules: 5989180d3f74Swdenk- remove any trailing white space 59907ca9296eSWolfgang Denk- use TAB characters for indentation and vertical alignment, not spaces 5991180d3f74Swdenk- make sure NOT to use DOS '\r\n' line feeds 59927ca9296eSWolfgang Denk- do not add more than 2 consecutive empty lines to source files 5993180d3f74Swdenk- do not add trailing empty lines to source files 5994180d3f74Swdenk 5995c609719bSwdenkSubmissions which do not conform to the standards may be returned 5996c609719bSwdenkwith a request to reformat the changes. 5997c609719bSwdenk 5998c609719bSwdenk 5999c609719bSwdenkSubmitting Patches: 6000c609719bSwdenk------------------- 6001c609719bSwdenk 6002c609719bSwdenkSince the number of patches for U-Boot is growing, we need to 6003c609719bSwdenkestablish some rules. Submissions which do not conform to these rules 6004c609719bSwdenkmay be rejected, even when they contain important and valuable stuff. 6005c609719bSwdenk 60060d28f34bSMagnus LiljaPlease see http://www.denx.de/wiki/U-Boot/Patches for details. 6007218ca724SWolfgang Denk 60080668236bSWolfgang DenkPatches shall be sent to the u-boot mailing list <u-boot@lists.denx.de>; 60090668236bSWolfgang Denksee http://lists.denx.de/mailman/listinfo/u-boot 60100668236bSWolfgang Denk 6011c609719bSwdenkWhen you send a patch, please include the following information with 6012c609719bSwdenkit: 6013c609719bSwdenk 6014c609719bSwdenk* For bug fixes: a description of the bug and how your patch fixes 6015c609719bSwdenk this bug. Please try to include a way of demonstrating that the 6016c609719bSwdenk patch actually fixes something. 6017c609719bSwdenk 6018c609719bSwdenk* For new features: a description of the feature and your 6019c609719bSwdenk implementation. 6020c609719bSwdenk 6021c609719bSwdenk* A CHANGELOG entry as plaintext (separate from the patch) 6022c609719bSwdenk 6023c609719bSwdenk* For major contributions, your entry to the CREDITS file 6024c609719bSwdenk 602527af930eSAlbert ARIBAUD* When you add support for a new board, don't forget to add a 602627af930eSAlbert ARIBAUD maintainer e-mail address to the boards.cfg file, too. 6027c609719bSwdenk 6028c609719bSwdenk* If your patch adds new configuration options, don't forget to 6029c609719bSwdenk document these in the README file. 6030c609719bSwdenk 6031218ca724SWolfgang Denk* The patch itself. If you are using git (which is *strongly* 6032218ca724SWolfgang Denk recommended) you can easily generate the patch using the 60337ca9296eSWolfgang Denk "git format-patch". If you then use "git send-email" to send it to 6034218ca724SWolfgang Denk the U-Boot mailing list, you will avoid most of the common problems 6035218ca724SWolfgang Denk with some other mail clients. 6036c609719bSwdenk 6037218ca724SWolfgang Denk If you cannot use git, use "diff -purN OLD NEW". If your version of 6038218ca724SWolfgang Denk diff does not support these options, then get the latest version of 6039218ca724SWolfgang Denk GNU diff. 60406dff5529Swdenk 6041218ca724SWolfgang Denk The current directory when running this command shall be the parent 6042218ca724SWolfgang Denk directory of the U-Boot source tree (i. e. please make sure that 6043218ca724SWolfgang Denk your patch includes sufficient directory information for the 6044218ca724SWolfgang Denk affected files). 6045218ca724SWolfgang Denk 6046218ca724SWolfgang Denk We prefer patches as plain text. MIME attachments are discouraged, 6047218ca724SWolfgang Denk and compressed attachments must not be used. 6048c609719bSwdenk 604952f52c14Swdenk* If one logical set of modifications affects or creates several 605052f52c14Swdenk files, all these changes shall be submitted in a SINGLE patch file. 605152f52c14Swdenk 605252f52c14Swdenk* Changesets that contain different, unrelated modifications shall be 605352f52c14Swdenk submitted as SEPARATE patches, one patch per changeset. 605452f52c14Swdenk 605552f52c14Swdenk 6056c609719bSwdenkNotes: 6057c609719bSwdenk 6058c609719bSwdenk* Before sending the patch, run the MAKEALL script on your patched 6059c609719bSwdenk source tree and make sure that no errors or warnings are reported 6060c609719bSwdenk for any of the boards. 6061c609719bSwdenk 6062c609719bSwdenk* Keep your modifications to the necessary minimum: A patch 6063c609719bSwdenk containing several unrelated changes or arbitrary reformats will be 6064c609719bSwdenk returned with a request to re-formatting / split it. 6065c609719bSwdenk 6066c609719bSwdenk* If you modify existing code, make sure that your new code does not 6067c609719bSwdenk add to the memory footprint of the code ;-) Small is beautiful! 6068c609719bSwdenk When adding new features, these should compile conditionally only 6069c609719bSwdenk (using #ifdef), and the resulting code with the new feature 6070c609719bSwdenk disabled must not need more memory than the old code without your 6071c609719bSwdenk modification. 607290dc6704Swdenk 60730668236bSWolfgang Denk* Remember that there is a size limit of 100 kB per message on the 60740668236bSWolfgang Denk u-boot mailing list. Bigger patches will be moderated. If they are 60750668236bSWolfgang Denk reasonable and not too big, they will be acknowledged. But patches 60760668236bSWolfgang Denk bigger than the size limit should be avoided. 6077