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 /pxa Files specific to Intel XScale PXA CPUs 1458d321b81SPeter Tyser /sa1100 Files specific to Intel StrongARM SA1100 CPUs 1468d321b81SPeter Tyser /lib Architecture specific library files 1478d321b81SPeter Tyser /avr32 Files generic to AVR32 architecture 1488d321b81SPeter Tyser /cpu CPU specific files 1498d321b81SPeter Tyser /lib Architecture specific library files 1508d321b81SPeter Tyser /blackfin Files generic to Analog Devices Blackfin architecture 1518d321b81SPeter Tyser /cpu CPU specific files 1528d321b81SPeter Tyser /lib Architecture specific library files 1538d321b81SPeter Tyser /m68k Files generic to m68k architecture 1548d321b81SPeter Tyser /cpu CPU specific files 1558d321b81SPeter Tyser /mcf52x2 Files specific to Freescale ColdFire MCF52x2 CPUs 1568d321b81SPeter Tyser /mcf5227x Files specific to Freescale ColdFire MCF5227x CPUs 1578d321b81SPeter Tyser /mcf532x Files specific to Freescale ColdFire MCF5329 CPUs 1588d321b81SPeter Tyser /mcf5445x Files specific to Freescale ColdFire MCF5445x CPUs 1598d321b81SPeter Tyser /mcf547x_8x Files specific to Freescale ColdFire MCF547x_8x CPUs 1608d321b81SPeter Tyser /lib Architecture specific library files 1618d321b81SPeter Tyser /microblaze Files generic to microblaze architecture 1628d321b81SPeter Tyser /cpu CPU specific files 1638d321b81SPeter Tyser /lib Architecture specific library files 1648d321b81SPeter Tyser /mips Files generic to MIPS architecture 1658d321b81SPeter Tyser /cpu CPU specific files 16692bbd64eSDaniel Schwierzeck /mips32 Files specific to MIPS32 CPUs 16780421fccSXiangfu Liu /xburst Files specific to Ingenic XBurst CPUs 1688d321b81SPeter Tyser /lib Architecture specific library files 169afc1ce82SMacpaul Lin /nds32 Files generic to NDS32 architecture 170afc1ce82SMacpaul Lin /cpu CPU specific files 171afc1ce82SMacpaul Lin /n1213 Files specific to Andes Technology N1213 CPUs 172afc1ce82SMacpaul Lin /lib Architecture specific library files 1738d321b81SPeter Tyser /nios2 Files generic to Altera NIOS2 architecture 1748d321b81SPeter Tyser /cpu CPU specific files 1758d321b81SPeter Tyser /lib Architecture specific library files 17633c7731bSRobert P. J. Day /openrisc Files generic to OpenRISC architecture 17733c7731bSRobert P. J. Day /cpu CPU specific files 17833c7731bSRobert P. J. Day /lib Architecture specific library files 179a47a12beSStefan Roese /powerpc Files generic to PowerPC architecture 1808d321b81SPeter Tyser /cpu CPU specific files 1818d321b81SPeter Tyser /74xx_7xx Files specific to Freescale MPC74xx and 7xx CPUs 1828d321b81SPeter Tyser /mpc5xx Files specific to Freescale MPC5xx CPUs 1838d321b81SPeter Tyser /mpc5xxx Files specific to Freescale MPC5xxx CPUs 1848d321b81SPeter Tyser /mpc8xx Files specific to Freescale MPC8xx CPUs 1858d321b81SPeter Tyser /mpc824x Files specific to Freescale MPC824x CPUs 1868d321b81SPeter Tyser /mpc8260 Files specific to Freescale MPC8260 CPUs 1878d321b81SPeter Tyser /mpc85xx Files specific to Freescale MPC85xx CPUs 1888d321b81SPeter Tyser /ppc4xx Files specific to AMCC PowerPC 4xx CPUs 1898d321b81SPeter Tyser /lib Architecture specific library files 1908d321b81SPeter Tyser /sh Files generic to SH architecture 1918d321b81SPeter Tyser /cpu CPU specific files 1928d321b81SPeter Tyser /sh2 Files specific to sh2 CPUs 1938d321b81SPeter Tyser /sh3 Files specific to sh3 CPUs 1948d321b81SPeter Tyser /sh4 Files specific to sh4 CPUs 1958d321b81SPeter Tyser /lib Architecture specific library files 1968d321b81SPeter Tyser /sparc Files generic to SPARC architecture 1978d321b81SPeter Tyser /cpu CPU specific files 1988d321b81SPeter Tyser /leon2 Files specific to Gaisler LEON2 SPARC CPU 1998d321b81SPeter Tyser /leon3 Files specific to Gaisler LEON3 SPARC CPU 2008d321b81SPeter Tyser /lib Architecture specific library files 20133c7731bSRobert P. J. Day /x86 Files generic to x86 architecture 20233c7731bSRobert P. J. Day /cpu CPU specific files 20333c7731bSRobert P. J. Day /lib Architecture specific library files 2048d321b81SPeter Tyser/api Machine/arch independent API for external apps 2058d321b81SPeter Tyser/board Board dependent files 2068d321b81SPeter Tyser/common Misc architecture independent functions 2078d321b81SPeter Tyser/disk Code for disk drive partition handling 2088d321b81SPeter Tyser/doc Documentation (don't expect too much) 2098d321b81SPeter Tyser/drivers Commonly used device drivers 21033c7731bSRobert P. J. Day/dts Contains Makefile for building internal U-Boot fdt. 2118d321b81SPeter Tyser/examples Example code for standalone applications, etc. 2128d321b81SPeter Tyser/fs Filesystem code (cramfs, ext2, jffs2, etc.) 2138d321b81SPeter Tyser/include Header Files 2148d321b81SPeter Tyser/lib Files generic to all architectures 2158d321b81SPeter Tyser /libfdt Library files to support flattened device trees 2168d321b81SPeter Tyser /lzma Library files to support LZMA decompression 2178d321b81SPeter Tyser /lzo Library files to support LZO decompression 2188d321b81SPeter Tyser/net Networking code 2198d321b81SPeter Tyser/post Power On Self Test 22033c7731bSRobert P. J. Day/spl Secondary Program Loader framework 2218d321b81SPeter Tyser/tools Tools to build S-Record or U-Boot images, etc. 222c609719bSwdenk 223c609719bSwdenkSoftware Configuration: 224c609719bSwdenk======================= 225c609719bSwdenk 226c609719bSwdenkConfiguration is usually done using C preprocessor defines; the 227c609719bSwdenkrationale behind that is to avoid dead code whenever possible. 228c609719bSwdenk 229c609719bSwdenkThere are two classes of configuration variables: 230c609719bSwdenk 231c609719bSwdenk* Configuration _OPTIONS_: 232c609719bSwdenk These are selectable by the user and have names beginning with 233c609719bSwdenk "CONFIG_". 234c609719bSwdenk 235c609719bSwdenk* Configuration _SETTINGS_: 236c609719bSwdenk These depend on the hardware etc. and should not be meddled with if 237c609719bSwdenk you don't know what you're doing; they have names beginning with 2386d0f6bcfSJean-Christophe PLAGNIOL-VILLARD "CONFIG_SYS_". 239c609719bSwdenk 240c609719bSwdenkLater we will add a configuration tool - probably similar to or even 241c609719bSwdenkidentical to what's used for the Linux kernel. Right now, we have to 242c609719bSwdenkdo the configuration by hand, which means creating some symbolic 243c609719bSwdenklinks and editing some configuration files. We use the TQM8xxL boards 244c609719bSwdenkas an example here. 245c609719bSwdenk 246c609719bSwdenk 247c609719bSwdenkSelection of Processor Architecture and Board Type: 248c609719bSwdenk--------------------------------------------------- 249c609719bSwdenk 250c609719bSwdenkFor all supported boards there are ready-to-use default 251c609719bSwdenkconfigurations available; just type "make <board_name>_config". 252c609719bSwdenk 253c609719bSwdenkExample: For a TQM823L module type: 254c609719bSwdenk 255c609719bSwdenk cd u-boot 256c609719bSwdenk make TQM823L_config 257c609719bSwdenk 25811ccc33fSMarcel ZiswilerFor the Cogent platform, you need to specify the CPU type as well; 259c609719bSwdenke.g. "make cogent_mpc8xx_config". And also configure the cogent 260c609719bSwdenkdirectory according to the instructions in cogent/README. 261c609719bSwdenk 262c609719bSwdenk 263c609719bSwdenkConfiguration Options: 264c609719bSwdenk---------------------- 265c609719bSwdenk 266c609719bSwdenkConfiguration depends on the combination of board and CPU type; all 267c609719bSwdenksuch information is kept in a configuration file 268c609719bSwdenk"include/configs/<board_name>.h". 269c609719bSwdenk 270c609719bSwdenkExample: For a TQM823L module, all configuration settings are in 271c609719bSwdenk"include/configs/TQM823L.h". 272c609719bSwdenk 273c609719bSwdenk 2747f6c2cbcSwdenkMany of the options are named exactly as the corresponding Linux 2757f6c2cbcSwdenkkernel configuration options. The intention is to make it easier to 2767f6c2cbcSwdenkbuild a config tool - later. 2777f6c2cbcSwdenk 2787f6c2cbcSwdenk 279c609719bSwdenkThe following options need to be configured: 280c609719bSwdenk 2812628114eSKim Phillips- CPU Type: Define exactly one, e.g. CONFIG_MPC85XX. 282c609719bSwdenk 2832628114eSKim Phillips- Board Type: Define exactly one, e.g. CONFIG_MPC8540ADS. 2846ccec449SWolfgang Denk 2856ccec449SWolfgang Denk- CPU Daughterboard Type: (if CONFIG_ATSTK1000 is defined) 28609ea0de0SHaavard Skinnemoen Define exactly one, e.g. CONFIG_ATSTK1002 287c609719bSwdenk 288c609719bSwdenk- CPU Module Type: (if CONFIG_COGENT is defined) 289c609719bSwdenk Define exactly one of 290c609719bSwdenk CONFIG_CMA286_60_OLD 291c609719bSwdenk--- FIXME --- not tested yet: 292c609719bSwdenk CONFIG_CMA286_60, CONFIG_CMA286_21, CONFIG_CMA286_60P, 293c609719bSwdenk CONFIG_CMA287_23, CONFIG_CMA287_50 294c609719bSwdenk 295c609719bSwdenk- Motherboard Type: (if CONFIG_COGENT is defined) 296c609719bSwdenk Define exactly one of 297c609719bSwdenk CONFIG_CMA101, CONFIG_CMA102 298c609719bSwdenk 299c609719bSwdenk- Motherboard I/O Modules: (if CONFIG_COGENT is defined) 300c609719bSwdenk Define one or more of 301c609719bSwdenk CONFIG_CMA302 302c609719bSwdenk 303c609719bSwdenk- Motherboard Options: (if CONFIG_CMA101 or CONFIG_CMA102 are defined) 304c609719bSwdenk Define one or more of 305c609719bSwdenk CONFIG_LCD_HEARTBEAT - update a character position on 30611ccc33fSMarcel Ziswiler the LCD display every second with 307c609719bSwdenk a "rotator" |\-/|\-/ 308c609719bSwdenk 3092535d602Swdenk- Board flavour: (if CONFIG_MPC8260ADS is defined) 3102535d602Swdenk CONFIG_ADSTYPE 3112535d602Swdenk Possible values are: 3126d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8260ADS - original MPC8260ADS 3136d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8266ADS - MPC8266ADS 3146d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PQ2FADS - PQ2FADS-ZU or PQ2FADS-VR 3156d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8272ADS - MPC8272ADS 3162535d602Swdenk 317cf946c6dSLei Wen- Marvell Family Member 318cf946c6dSLei Wen CONFIG_SYS_MVFS - define it if you want to enable 319cf946c6dSLei Wen multiple fs option at one time 320cf946c6dSLei Wen for marvell soc family 321cf946c6dSLei Wen 322c609719bSwdenk- MPC824X Family Member (if CONFIG_MPC824X is defined) 323c609719bSwdenk Define exactly one of 324c609719bSwdenk CONFIG_MPC8240, CONFIG_MPC8245 325c609719bSwdenk 32611ccc33fSMarcel Ziswiler- 8xx CPU Options: (if using an MPC8xx CPU) 32766ca92a5Swdenk CONFIG_8xx_GCLK_FREQ - deprecated: CPU clock if 32866ca92a5Swdenk get_gclk_freq() cannot work 3295da627a4Swdenk e.g. if there is no 32KHz 3305da627a4Swdenk reference PIT/RTC clock 33166ca92a5Swdenk CONFIG_8xx_OSCLK - PLL input clock (either EXTCLK 33266ca92a5Swdenk or XTAL/EXTAL) 333c609719bSwdenk 33466ca92a5Swdenk- 859/866/885 CPU options: (if using a MPC859 or MPC866 or MPC885 CPU): 3356d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8xx_CPUCLK_MIN 3366d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8xx_CPUCLK_MAX 33766ca92a5Swdenk CONFIG_8xx_CPUCLK_DEFAULT 33875d1ea7fSwdenk See doc/README.MPC866 33975d1ea7fSwdenk 3406d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MEASURE_CPUCLK 34175d1ea7fSwdenk 34275d1ea7fSwdenk Define this to measure the actual CPU clock instead 34375d1ea7fSwdenk of relying on the correctness of the configured 34475d1ea7fSwdenk values. Mostly useful for board bringup to make sure 34575d1ea7fSwdenk the PLL is locked at the intended frequency. Note 34675d1ea7fSwdenk that this requires a (stable) reference clock (32 kHz 3476d0f6bcfSJean-Christophe PLAGNIOL-VILLARD RTC clock or CONFIG_SYS_8XX_XIN) 34875d1ea7fSwdenk 349506f3918SHeiko Schocher CONFIG_SYS_DELAYED_ICACHE 350506f3918SHeiko Schocher 351506f3918SHeiko Schocher Define this option if you want to enable the 352506f3918SHeiko Schocher ICache only when Code runs from RAM. 353506f3918SHeiko Schocher 35466412c63SKumar Gala- 85xx CPU Options: 355ffd06e02SYork Sun CONFIG_SYS_PPC64 356ffd06e02SYork Sun 357ffd06e02SYork Sun Specifies that the core is a 64-bit PowerPC implementation (implements 358ffd06e02SYork Sun the "64" category of the Power ISA). This is necessary for ePAPR 359ffd06e02SYork Sun compliance, among other possible reasons. 360ffd06e02SYork Sun 36166412c63SKumar Gala CONFIG_SYS_FSL_TBCLK_DIV 36266412c63SKumar Gala 36366412c63SKumar Gala Defines the core time base clock divider ratio compared to the 36466412c63SKumar Gala system clock. On most PQ3 devices this is 8, on newer QorIQ 36566412c63SKumar Gala devices it can be 16 or 32. The ratio varies from SoC to Soc. 36666412c63SKumar Gala 3678f29084aSKumar Gala CONFIG_SYS_FSL_PCIE_COMPAT 3688f29084aSKumar Gala 3698f29084aSKumar Gala Defines the string to utilize when trying to match PCIe device 3708f29084aSKumar Gala tree nodes for the given platform. 3718f29084aSKumar Gala 372afa6b551SPrabhakar Kushwaha CONFIG_SYS_PPC_E500_DEBUG_TLB 373afa6b551SPrabhakar Kushwaha 374afa6b551SPrabhakar Kushwaha Enables a temporary TLB entry to be used during boot to work 375afa6b551SPrabhakar Kushwaha around limitations in e500v1 and e500v2 external debugger 376afa6b551SPrabhakar Kushwaha support. This reduces the portions of the boot code where 377afa6b551SPrabhakar Kushwaha breakpoints and single stepping do not work. The value of this 378afa6b551SPrabhakar Kushwaha symbol should be set to the TLB1 entry to be used for this 379afa6b551SPrabhakar Kushwaha purpose. 380afa6b551SPrabhakar Kushwaha 38133eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510 38233eee330SScott Wood 38333eee330SScott Wood Enables a workaround for erratum A004510. If set, 38433eee330SScott Wood then CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV and 38533eee330SScott Wood CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY must be set. 38633eee330SScott Wood 38733eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV 38833eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2 (optional) 38933eee330SScott Wood 39033eee330SScott Wood Defines one or two SoC revisions (low 8 bits of SVR) 39133eee330SScott Wood for which the A004510 workaround should be applied. 39233eee330SScott Wood 39333eee330SScott Wood The rest of SVR is either not relevant to the decision 39433eee330SScott Wood of whether the erratum is present (e.g. p2040 versus 39533eee330SScott Wood p2041) or is implied by the build target, which controls 39633eee330SScott Wood whether CONFIG_SYS_FSL_ERRATUM_A004510 is set. 39733eee330SScott Wood 39833eee330SScott Wood See Freescale App Note 4493 for more information about 39933eee330SScott Wood this erratum. 40033eee330SScott Wood 40174fa22edSPrabhakar Kushwaha CONFIG_A003399_NOR_WORKAROUND 40274fa22edSPrabhakar Kushwaha Enables a workaround for IFC erratum A003399. It is only 40374fa22edSPrabhakar Kushwaha requred during NOR boot. 40474fa22edSPrabhakar Kushwaha 40533eee330SScott Wood CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY 40633eee330SScott Wood 40733eee330SScott Wood This is the value to write into CCSR offset 0x18600 40833eee330SScott Wood according to the A004510 workaround. 40933eee330SScott Wood 41064501c66SPriyanka Jain CONFIG_SYS_FSL_DSP_DDR_ADDR 41164501c66SPriyanka Jain This value denotes start offset of DDR memory which is 41264501c66SPriyanka Jain connected exclusively to the DSP cores. 41364501c66SPriyanka Jain 414765b0bdbSPriyanka Jain CONFIG_SYS_FSL_DSP_M2_RAM_ADDR 415765b0bdbSPriyanka Jain This value denotes start offset of M2 memory 416765b0bdbSPriyanka Jain which is directly connected to the DSP core. 417765b0bdbSPriyanka Jain 41864501c66SPriyanka Jain CONFIG_SYS_FSL_DSP_M3_RAM_ADDR 41964501c66SPriyanka Jain This value denotes start offset of M3 memory which is directly 42064501c66SPriyanka Jain connected to the DSP core. 42164501c66SPriyanka Jain 422765b0bdbSPriyanka Jain CONFIG_SYS_FSL_DSP_CCSRBAR_DEFAULT 423765b0bdbSPriyanka Jain This value denotes start offset of DSP CCSR space. 424765b0bdbSPriyanka Jain 425b135991aSPriyanka Jain CONFIG_SYS_FSL_SINGLE_SOURCE_CLK 426b135991aSPriyanka Jain Single Source Clock is clocking mode present in some of FSL SoC's. 427b135991aSPriyanka Jain In this mode, a single differential clock is used to supply 428b135991aSPriyanka Jain clocks to the sysclock, ddrclock and usbclock. 429b135991aSPriyanka Jain 4306cb461b4SDaniel Schwierzeck- Generic CPU options: 4316cb461b4SDaniel Schwierzeck CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN 4326cb461b4SDaniel Schwierzeck 4336cb461b4SDaniel Schwierzeck Defines the endianess of the CPU. Implementation of those 4346cb461b4SDaniel Schwierzeck values is arch specific. 4356cb461b4SDaniel Schwierzeck 4365614e71bSYork Sun CONFIG_SYS_FSL_DDR 4375614e71bSYork Sun Freescale DDR driver in use. This type of DDR controller is 4385614e71bSYork Sun found in mpc83xx, mpc85xx, mpc86xx as well as some ARM core 4395614e71bSYork Sun SoCs. 4405614e71bSYork Sun 4415614e71bSYork Sun CONFIG_SYS_FSL_DDR_ADDR 4425614e71bSYork Sun Freescale DDR memory-mapped register base. 4435614e71bSYork Sun 4445614e71bSYork Sun CONFIG_SYS_FSL_DDR_EMU 4455614e71bSYork Sun Specify emulator support for DDR. Some DDR features such as 4465614e71bSYork Sun deskew training are not available. 4475614e71bSYork Sun 4485614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN1 4495614e71bSYork Sun Freescale DDR1 controller. 4505614e71bSYork Sun 4515614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN2 4525614e71bSYork Sun Freescale DDR2 controller. 4535614e71bSYork Sun 4545614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN3 4555614e71bSYork Sun Freescale DDR3 controller. 4565614e71bSYork Sun 4579ac4ffbdSYork Sun CONFIG_SYS_FSL_DDRC_ARM_GEN3 4589ac4ffbdSYork Sun Freescale DDR3 controller for ARM-based SoCs. 4599ac4ffbdSYork Sun 4605614e71bSYork Sun CONFIG_SYS_FSL_DDR1 4615614e71bSYork Sun Board config to use DDR1. It can be enabled for SoCs with 4625614e71bSYork Sun Freescale DDR1 or DDR2 controllers, depending on the board 4635614e71bSYork Sun implemetation. 4645614e71bSYork Sun 4655614e71bSYork Sun CONFIG_SYS_FSL_DDR2 4665614e71bSYork Sun Board config to use DDR2. It can be eanbeld for SoCs with 4675614e71bSYork Sun Freescale DDR2 or DDR3 controllers, depending on the board 4685614e71bSYork Sun implementation. 4695614e71bSYork Sun 4705614e71bSYork Sun CONFIG_SYS_FSL_DDR3 4715614e71bSYork Sun Board config to use DDR3. It can be enabled for SoCs with 4725614e71bSYork Sun Freescale DDR3 controllers. 4735614e71bSYork Sun 4741b4175d6SPrabhakar Kushwaha CONFIG_SYS_FSL_IFC_BE 4751b4175d6SPrabhakar Kushwaha Defines the IFC controller register space as Big Endian 4761b4175d6SPrabhakar Kushwaha 4771b4175d6SPrabhakar Kushwaha CONFIG_SYS_FSL_IFC_LE 4781b4175d6SPrabhakar Kushwaha Defines the IFC controller register space as Little Endian 4791b4175d6SPrabhakar Kushwaha 480690e4258SPrabhakar Kushwaha CONFIG_SYS_FSL_PBL_PBI 481690e4258SPrabhakar Kushwaha It enables addition of RCW (Power on reset configuration) in built image. 482690e4258SPrabhakar Kushwaha Please refer doc/README.pblimage for more details 483690e4258SPrabhakar Kushwaha 484690e4258SPrabhakar Kushwaha CONFIG_SYS_FSL_PBL_RCW 485690e4258SPrabhakar Kushwaha It adds PBI(pre-boot instructions) commands in u-boot build image. 486690e4258SPrabhakar Kushwaha PBI commands can be used to configure SoC before it starts the execution. 487690e4258SPrabhakar Kushwaha Please refer doc/README.pblimage for more details 488690e4258SPrabhakar Kushwaha 489*4e5b1bd0SYork Sun CONFIG_SYS_FSL_DDR_BE 490*4e5b1bd0SYork Sun Defines the DDR controller register space as Big Endian 491*4e5b1bd0SYork Sun 492*4e5b1bd0SYork Sun CONFIG_SYS_FSL_DDR_LE 493*4e5b1bd0SYork Sun Defines the DDR controller register space as Little Endian 494*4e5b1bd0SYork Sun 4950b953ffcSMarkus Klotzbuecher- Intel Monahans options: 4966d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MONAHANS_RUN_MODE_OSC_RATIO 4970b953ffcSMarkus Klotzbuecher 4980b953ffcSMarkus Klotzbuecher Defines the Monahans run mode to oscillator 4990b953ffcSMarkus Klotzbuecher ratio. Valid values are 8, 16, 24, 31. The core 5000b953ffcSMarkus Klotzbuecher frequency is this value multiplied by 13 MHz. 5010b953ffcSMarkus Klotzbuecher 5026d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MONAHANS_TURBO_RUN_MODE_RATIO 5030b953ffcSMarkus Klotzbuecher 5040b953ffcSMarkus Klotzbuecher Defines the Monahans turbo mode to oscillator 5050b953ffcSMarkus Klotzbuecher ratio. Valid values are 1 (default if undefined) and 5060b953ffcSMarkus Klotzbuecher 2. The core frequency as calculated above is multiplied 5070b953ffcSMarkus Klotzbuecher by this value. 5080b953ffcSMarkus Klotzbuecher 50992bbd64eSDaniel Schwierzeck- MIPS CPU options: 51092bbd64eSDaniel Schwierzeck CONFIG_SYS_INIT_SP_OFFSET 51192bbd64eSDaniel Schwierzeck 51292bbd64eSDaniel Schwierzeck Offset relative to CONFIG_SYS_SDRAM_BASE for initial stack 51392bbd64eSDaniel Schwierzeck pointer. This is needed for the temporary stack before 51492bbd64eSDaniel Schwierzeck relocation. 51592bbd64eSDaniel Schwierzeck 51692bbd64eSDaniel Schwierzeck CONFIG_SYS_MIPS_CACHE_MODE 51792bbd64eSDaniel Schwierzeck 51892bbd64eSDaniel Schwierzeck Cache operation mode for the MIPS CPU. 51992bbd64eSDaniel Schwierzeck See also arch/mips/include/asm/mipsregs.h. 52092bbd64eSDaniel Schwierzeck Possible values are: 52192bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_NO_WA 52292bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_WA 52392bbd64eSDaniel Schwierzeck CONF_CM_UNCACHED 52492bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_NONCOHERENT 52592bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_CE 52692bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_COW 52792bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_CUW 52892bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_ACCELERATED 52992bbd64eSDaniel Schwierzeck 53092bbd64eSDaniel Schwierzeck CONFIG_SYS_XWAY_EBU_BOOTCFG 53192bbd64eSDaniel Schwierzeck 53292bbd64eSDaniel Schwierzeck Special option for Lantiq XWAY SoCs for booting from NOR flash. 53392bbd64eSDaniel Schwierzeck See also arch/mips/cpu/mips32/start.S. 53492bbd64eSDaniel Schwierzeck 53592bbd64eSDaniel Schwierzeck CONFIG_XWAY_SWAP_BYTES 53692bbd64eSDaniel Schwierzeck 53792bbd64eSDaniel Schwierzeck Enable compilation of tools/xway-swap-bytes needed for Lantiq 53892bbd64eSDaniel Schwierzeck XWAY SoCs for booting from NOR flash. The U-Boot image needs to 53992bbd64eSDaniel Schwierzeck be swapped if a flash programmer is used. 54092bbd64eSDaniel Schwierzeck 541b67d8816SChristian Riesch- ARM options: 542b67d8816SChristian Riesch CONFIG_SYS_EXCEPTION_VECTORS_HIGH 543b67d8816SChristian Riesch 544b67d8816SChristian Riesch Select high exception vectors of the ARM core, e.g., do not 545b67d8816SChristian Riesch clear the V bit of the c1 register of CP15. 546b67d8816SChristian Riesch 5475356f545SAneesh V CONFIG_SYS_THUMB_BUILD 5485356f545SAneesh V 5495356f545SAneesh V Use this flag to build U-Boot using the Thumb instruction 5505356f545SAneesh V set for ARM architectures. Thumb instruction set provides 5515356f545SAneesh V better code density. For ARM architectures that support 5525356f545SAneesh V Thumb2 this flag will result in Thumb2 code generated by 5535356f545SAneesh V GCC. 5545356f545SAneesh V 555c5d4752cSStephen Warren CONFIG_ARM_ERRATA_716044 5560678587fSStephen Warren CONFIG_ARM_ERRATA_742230 5570678587fSStephen Warren CONFIG_ARM_ERRATA_743622 5580678587fSStephen Warren CONFIG_ARM_ERRATA_751472 5590678587fSStephen Warren 5600678587fSStephen Warren If set, the workarounds for these ARM errata are applied early 5610678587fSStephen Warren during U-Boot startup. Note that these options force the 5620678587fSStephen Warren workarounds to be applied; no CPU-type/version detection 5630678587fSStephen Warren exists, unlike the similar options in the Linux kernel. Do not 5640678587fSStephen Warren set these options unless they apply! 5650678587fSStephen Warren 566795659dcSStephen Warren- CPU timer options: 567795659dcSStephen Warren CONFIG_SYS_HZ 568795659dcSStephen Warren 569795659dcSStephen Warren The frequency of the timer returned by get_timer(). 570795659dcSStephen Warren get_timer() must operate in milliseconds and this CONFIG 571795659dcSStephen Warren option must be set to 1000. 572795659dcSStephen Warren 5735da627a4Swdenk- Linux Kernel Interface: 574c609719bSwdenk CONFIG_CLOCKS_IN_MHZ 575c609719bSwdenk 576c609719bSwdenk U-Boot stores all clock information in Hz 577c609719bSwdenk internally. For binary compatibility with older Linux 578c609719bSwdenk kernels (which expect the clocks passed in the 579c609719bSwdenk bd_info data to be in MHz) the environment variable 580c609719bSwdenk "clocks_in_mhz" can be defined so that U-Boot 581c609719bSwdenk converts clock data to MHZ before passing it to the 582c609719bSwdenk Linux kernel. 583c609719bSwdenk When CONFIG_CLOCKS_IN_MHZ is defined, a definition of 584c609719bSwdenk "clocks_in_mhz=1" is automatically included in the 585c609719bSwdenk default environment. 586c609719bSwdenk 5875da627a4Swdenk CONFIG_MEMSIZE_IN_BYTES [relevant for MIPS only] 5885da627a4Swdenk 58911ccc33fSMarcel Ziswiler When transferring memsize parameter to linux, some versions 5905da627a4Swdenk expect it to be in bytes, others in MB. 5915da627a4Swdenk Define CONFIG_MEMSIZE_IN_BYTES to make it in bytes. 5925da627a4Swdenk 593fec6d9eeSGerald Van Baren CONFIG_OF_LIBFDT 594f57f70aaSWolfgang Denk 595f57f70aaSWolfgang Denk New kernel versions are expecting firmware settings to be 596213bf8c8SGerald Van Baren passed using flattened device trees (based on open firmware 597213bf8c8SGerald Van Baren concepts). 598213bf8c8SGerald Van Baren 599213bf8c8SGerald Van Baren CONFIG_OF_LIBFDT 600213bf8c8SGerald Van Baren * New libfdt-based support 601213bf8c8SGerald Van Baren * Adds the "fdt" command 6023bb342fcSKim Phillips * The bootm command automatically updates the fdt 603213bf8c8SGerald Van Baren 604b55ae402SMarcel Ziswiler OF_CPU - The proper name of the cpus node (only required for 605b55ae402SMarcel Ziswiler MPC512X and MPC5xxx based boards). 606b55ae402SMarcel Ziswiler OF_SOC - The proper name of the soc node (only required for 607b55ae402SMarcel Ziswiler MPC512X and MPC5xxx based boards). 608f57f70aaSWolfgang Denk OF_TBCLK - The timebase frequency. 609c2871f03SKumar Gala OF_STDOUT_PATH - The path to the console device 610f57f70aaSWolfgang Denk 61111ccc33fSMarcel Ziswiler boards with QUICC Engines require OF_QE to set UCC MAC 61211ccc33fSMarcel Ziswiler addresses 6133bb342fcSKim Phillips 6144e253137SKumar Gala CONFIG_OF_BOARD_SETUP 6154e253137SKumar Gala 6164e253137SKumar Gala Board code has addition modification that it wants to make 6174e253137SKumar Gala to the flat device tree before handing it off to the kernel 6186705d81eSwdenk 6190267768eSMatthew McClintock CONFIG_OF_BOOT_CPU 6200267768eSMatthew McClintock 62111ccc33fSMarcel Ziswiler This define fills in the correct boot CPU in the boot 6220267768eSMatthew McClintock param header, the default value is zero if undefined. 6230267768eSMatthew McClintock 6243887c3fbSHeiko Schocher CONFIG_OF_IDE_FIXUP 6253887c3fbSHeiko Schocher 6263887c3fbSHeiko Schocher U-Boot can detect if an IDE device is present or not. 6273887c3fbSHeiko Schocher If not, and this new config option is activated, U-Boot 6283887c3fbSHeiko Schocher removes the ATA node from the DTS before booting Linux, 6293887c3fbSHeiko Schocher so the Linux IDE driver does not probe the device and 6303887c3fbSHeiko Schocher crash. This is needed for buggy hardware (uc101) where 6313887c3fbSHeiko Schocher no pull down resistor is connected to the signal IDE5V_DD7. 6323887c3fbSHeiko Schocher 6337eb29398SIgor Grinberg CONFIG_MACH_TYPE [relevant for ARM only][mandatory] 6347eb29398SIgor Grinberg 6357eb29398SIgor Grinberg This setting is mandatory for all boards that have only one 6367eb29398SIgor Grinberg machine type and must be used to specify the machine type 6377eb29398SIgor Grinberg number as it appears in the ARM machine registry 6387eb29398SIgor Grinberg (see http://www.arm.linux.org.uk/developer/machines/). 6397eb29398SIgor Grinberg Only boards that have multiple machine types supported 6407eb29398SIgor Grinberg in a single configuration file and the machine type is 6417eb29398SIgor Grinberg runtime discoverable, do not have to use this setting. 6427eb29398SIgor Grinberg 6430b2f4ecaSNiklaus Giger- vxWorks boot parameters: 6440b2f4ecaSNiklaus Giger 6450b2f4ecaSNiklaus Giger bootvx constructs a valid bootline using the following 6460b2f4ecaSNiklaus Giger environments variables: bootfile, ipaddr, serverip, hostname. 6470b2f4ecaSNiklaus Giger It loads the vxWorks image pointed bootfile. 6480b2f4ecaSNiklaus Giger 6490b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_BOOT_DEVICE - The vxworks device name 6500b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_MAC_PTR - Ethernet 6 byte MA -address 6510b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_SERVERNAME - Name of the server 6520b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_BOOT_ADDR - Address of boot parameters 6530b2f4ecaSNiklaus Giger 6540b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_ADD_PARAMS 6550b2f4ecaSNiklaus Giger 6560b2f4ecaSNiklaus Giger Add it at the end of the bootline. E.g "u=username pw=secret" 6570b2f4ecaSNiklaus Giger 6580b2f4ecaSNiklaus Giger Note: If a "bootargs" environment is defined, it will overwride 6590b2f4ecaSNiklaus Giger the defaults discussed just above. 6600b2f4ecaSNiklaus Giger 6612c451f78SAneesh V- Cache Configuration: 6622c451f78SAneesh V CONFIG_SYS_ICACHE_OFF - Do not enable instruction cache in U-Boot 6632c451f78SAneesh V CONFIG_SYS_DCACHE_OFF - Do not enable data cache in U-Boot 6642c451f78SAneesh V CONFIG_SYS_L2CACHE_OFF- Do not enable L2 cache in U-Boot 6652c451f78SAneesh V 66693bc2193SAneesh V- Cache Configuration for ARM: 66793bc2193SAneesh V CONFIG_SYS_L2_PL310 - Enable support for ARM PL310 L2 cache 66893bc2193SAneesh V controller 66993bc2193SAneesh V CONFIG_SYS_PL310_BASE - Physical base address of PL310 67093bc2193SAneesh V controller register space 67193bc2193SAneesh V 6726705d81eSwdenk- Serial Ports: 67348d0192fSAndreas Engel CONFIG_PL010_SERIAL 6746705d81eSwdenk 6756705d81eSwdenk Define this if you want support for Amba PrimeCell PL010 UARTs. 6766705d81eSwdenk 67748d0192fSAndreas Engel CONFIG_PL011_SERIAL 6786705d81eSwdenk 6796705d81eSwdenk Define this if you want support for Amba PrimeCell PL011 UARTs. 6806705d81eSwdenk 6816705d81eSwdenk CONFIG_PL011_CLOCK 6826705d81eSwdenk 6836705d81eSwdenk If you have Amba PrimeCell PL011 UARTs, set this variable to 6846705d81eSwdenk the clock speed of the UARTs. 6856705d81eSwdenk 6866705d81eSwdenk CONFIG_PL01x_PORTS 6876705d81eSwdenk 6886705d81eSwdenk If you have Amba PrimeCell PL010 or PL011 UARTs on your board, 6896705d81eSwdenk define this to a list of base addresses for each (supported) 6906705d81eSwdenk port. See e.g. include/configs/versatile.h 6916705d81eSwdenk 692910f1ae3SJohn Rigby CONFIG_PL011_SERIAL_RLCR 693910f1ae3SJohn Rigby 694910f1ae3SJohn Rigby Some vendor versions of PL011 serial ports (e.g. ST-Ericsson U8500) 695910f1ae3SJohn Rigby have separate receive and transmit line control registers. Set 696910f1ae3SJohn Rigby this variable to initialize the extra register. 697910f1ae3SJohn Rigby 698910f1ae3SJohn Rigby CONFIG_PL011_SERIAL_FLUSH_ON_INIT 699910f1ae3SJohn Rigby 700910f1ae3SJohn Rigby On some platforms (e.g. U8500) U-Boot is loaded by a second stage 701910f1ae3SJohn Rigby boot loader that has already initialized the UART. Define this 702910f1ae3SJohn Rigby variable to flush the UART at init time. 703910f1ae3SJohn Rigby 7046705d81eSwdenk 705c609719bSwdenk- Console Interface: 706c609719bSwdenk Depending on board, define exactly one serial port 707c609719bSwdenk (like CONFIG_8xx_CONS_SMC1, CONFIG_8xx_CONS_SMC2, 708c609719bSwdenk CONFIG_8xx_CONS_SCC1, ...), or switch off the serial 709c609719bSwdenk console by defining CONFIG_8xx_CONS_NONE 710c609719bSwdenk 711c609719bSwdenk Note: if CONFIG_8xx_CONS_NONE is defined, the serial 712c609719bSwdenk port routines must be defined elsewhere 713c609719bSwdenk (i.e. serial_init(), serial_getc(), ...) 714c609719bSwdenk 715c609719bSwdenk CONFIG_CFB_CONSOLE 716c609719bSwdenk Enables console device for a color framebuffer. Needs following 717c53043b7SWolfgang Denk defines (cf. smiLynxEM, i8042) 718c609719bSwdenk VIDEO_FB_LITTLE_ENDIAN graphic memory organisation 719c609719bSwdenk (default big endian) 720c609719bSwdenk VIDEO_HW_RECTFILL graphic chip supports 721c609719bSwdenk rectangle fill 722c609719bSwdenk (cf. smiLynxEM) 723c609719bSwdenk VIDEO_HW_BITBLT graphic chip supports 724c609719bSwdenk bit-blit (cf. smiLynxEM) 725c609719bSwdenk VIDEO_VISIBLE_COLS visible pixel columns 726c609719bSwdenk (cols=pitch) 727c609719bSwdenk VIDEO_VISIBLE_ROWS visible pixel rows 728c609719bSwdenk VIDEO_PIXEL_SIZE bytes per pixel 729c609719bSwdenk VIDEO_DATA_FORMAT graphic data format 730c609719bSwdenk (0-5, cf. cfb_console.c) 731c609719bSwdenk VIDEO_FB_ADRS framebuffer address 732c609719bSwdenk VIDEO_KBD_INIT_FCT keyboard int fct 733c609719bSwdenk (i.e. i8042_kbd_init()) 734c609719bSwdenk VIDEO_TSTC_FCT test char fct 735c609719bSwdenk (i.e. i8042_tstc) 736c609719bSwdenk VIDEO_GETC_FCT get char fct 737c609719bSwdenk (i.e. i8042_getc) 738c609719bSwdenk CONFIG_CONSOLE_CURSOR cursor drawing on/off 739c609719bSwdenk (requires blink timer 740c609719bSwdenk cf. i8042.c) 7416d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CONSOLE_BLINK_COUNT blink interval (cf. i8042.c) 742c609719bSwdenk CONFIG_CONSOLE_TIME display time/date info in 743c609719bSwdenk upper right corner 744602ad3b3SJon Loeliger (requires CONFIG_CMD_DATE) 745c609719bSwdenk CONFIG_VIDEO_LOGO display Linux logo in 746c609719bSwdenk upper left corner 747a6c7ad2fSwdenk CONFIG_VIDEO_BMP_LOGO use bmp_logo.h instead of 748a6c7ad2fSwdenk linux_logo.h for logo. 749a6c7ad2fSwdenk Requires CONFIG_VIDEO_LOGO 750c609719bSwdenk CONFIG_CONSOLE_EXTRA_INFO 75111ccc33fSMarcel Ziswiler additional board info beside 752c609719bSwdenk the logo 753c609719bSwdenk 75433a35bbbSPali Rohár When CONFIG_CFB_CONSOLE_ANSI is defined, console will support 75533a35bbbSPali Rohár a limited number of ANSI escape sequences (cursor control, 75633a35bbbSPali Rohár erase functions and limited graphics rendition control). 75733a35bbbSPali Rohár 758c609719bSwdenk When CONFIG_CFB_CONSOLE is defined, video console is 759c609719bSwdenk default i/o. Serial console can be forced with 760c609719bSwdenk environment 'console=serial'. 761c609719bSwdenk 762a3ad8e26Swdenk When CONFIG_SILENT_CONSOLE is defined, all console 763a3ad8e26Swdenk messages (by U-Boot and Linux!) can be silenced with 764a3ad8e26Swdenk the "silent" environment variable. See 765a3ad8e26Swdenk doc/README.silent for more information. 766a3ad8e26Swdenk 76745ae2546SHeiko Schocher CONFIG_SYS_CONSOLE_BG_COL: define the backgroundcolor, default 76845ae2546SHeiko Schocher is 0x00. 76945ae2546SHeiko Schocher CONFIG_SYS_CONSOLE_FG_COL: define the foregroundcolor, default 77045ae2546SHeiko Schocher is 0xa0. 77145ae2546SHeiko Schocher 772c609719bSwdenk- Console Baudrate: 773c609719bSwdenk CONFIG_BAUDRATE - in bps 774c609719bSwdenk Select one of the baudrates listed in 7756d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BAUDRATE_TABLE, see below. 7766d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BRGCLK_PRESCALE, baudrate prescale 777c609719bSwdenk 778c92fac91SHeiko Schocher- Console Rx buffer length 779c92fac91SHeiko Schocher With CONFIG_SYS_SMC_RXBUFLEN it is possible to define 780c92fac91SHeiko Schocher the maximum receive buffer length for the SMC. 7812b3f12c2SHeiko Schocher This option is actual only for 82xx and 8xx possible. 782c92fac91SHeiko Schocher If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE 783c92fac91SHeiko Schocher must be defined, to setup the maximum idle timeout for 784c92fac91SHeiko Schocher the SMC. 785c92fac91SHeiko Schocher 7869558b48aSGraeme Russ- Pre-Console Buffer: 7879558b48aSGraeme Russ Prior to the console being initialised (i.e. serial UART 7889558b48aSGraeme Russ initialised etc) all console output is silently discarded. 7899558b48aSGraeme Russ Defining CONFIG_PRE_CONSOLE_BUFFER will cause U-Boot to 7909558b48aSGraeme Russ buffer any console messages prior to the console being 7919558b48aSGraeme Russ initialised to a buffer of size CONFIG_PRE_CON_BUF_SZ 7929558b48aSGraeme Russ bytes located at CONFIG_PRE_CON_BUF_ADDR. The buffer is 7939558b48aSGraeme Russ a circular buffer, so if more than CONFIG_PRE_CON_BUF_SZ 7949558b48aSGraeme Russ bytes are output before the console is initialised, the 7959558b48aSGraeme Russ earlier bytes are discarded. 7969558b48aSGraeme Russ 7979558b48aSGraeme Russ 'Sane' compilers will generate smaller code if 7989558b48aSGraeme Russ CONFIG_PRE_CON_BUF_SZ is a power of 2 7999558b48aSGraeme Russ 800046a37bdSSonny Rao- Safe printf() functions 801046a37bdSSonny Rao Define CONFIG_SYS_VSNPRINTF to compile in safe versions of 802046a37bdSSonny Rao the printf() functions. These are defined in 803046a37bdSSonny Rao include/vsprintf.h and include snprintf(), vsnprintf() and 804046a37bdSSonny Rao so on. Code size increase is approximately 300-500 bytes. 805046a37bdSSonny Rao If this option is not given then these functions will 806046a37bdSSonny Rao silently discard their buffer size argument - this means 807046a37bdSSonny Rao you are not getting any overflow checking in this case. 808046a37bdSSonny Rao 809c609719bSwdenk- Boot Delay: CONFIG_BOOTDELAY - in seconds 810c609719bSwdenk Delay before automatically booting the default image; 811c609719bSwdenk set to -1 to disable autoboot. 81293d7212fSJoe Hershberger set to -2 to autoboot with no delay and not check for abort 81393d7212fSJoe Hershberger (even when CONFIG_ZERO_BOOTDELAY_CHECK is defined). 814c609719bSwdenk 815c609719bSwdenk See doc/README.autoboot for these options that 816c609719bSwdenk work with CONFIG_BOOTDELAY. None are required. 817c609719bSwdenk CONFIG_BOOT_RETRY_TIME 818c609719bSwdenk CONFIG_BOOT_RETRY_MIN 819c609719bSwdenk CONFIG_AUTOBOOT_KEYED 820c609719bSwdenk CONFIG_AUTOBOOT_PROMPT 821c609719bSwdenk CONFIG_AUTOBOOT_DELAY_STR 822c609719bSwdenk CONFIG_AUTOBOOT_STOP_STR 823c609719bSwdenk CONFIG_AUTOBOOT_DELAY_STR2 824c609719bSwdenk CONFIG_AUTOBOOT_STOP_STR2 825c609719bSwdenk CONFIG_ZERO_BOOTDELAY_CHECK 826c609719bSwdenk CONFIG_RESET_TO_RETRY 827c609719bSwdenk 828c609719bSwdenk- Autoboot Command: 829c609719bSwdenk CONFIG_BOOTCOMMAND 830c609719bSwdenk Only needed when CONFIG_BOOTDELAY is enabled; 831c609719bSwdenk define a command string that is automatically executed 832c609719bSwdenk when no character is read on the console interface 833c609719bSwdenk within "Boot Delay" after reset. 834c609719bSwdenk 835c609719bSwdenk CONFIG_BOOTARGS 836c609719bSwdenk This can be used to pass arguments to the bootm 837c609719bSwdenk command. The value of CONFIG_BOOTARGS goes into the 838c609719bSwdenk environment value "bootargs". 839c609719bSwdenk 840c609719bSwdenk CONFIG_RAMBOOT and CONFIG_NFSBOOT 841c609719bSwdenk The value of these goes into the environment as 842c609719bSwdenk "ramboot" and "nfsboot" respectively, and can be used 843c609719bSwdenk as a convenience, when switching between booting from 84411ccc33fSMarcel Ziswiler RAM and NFS. 845c609719bSwdenk 846eda0ba38SHeiko Schocher- Bootcount: 847eda0ba38SHeiko Schocher CONFIG_BOOTCOUNT_LIMIT 848eda0ba38SHeiko Schocher Implements a mechanism for detecting a repeating reboot 849eda0ba38SHeiko Schocher cycle, see: 850eda0ba38SHeiko Schocher http://www.denx.de/wiki/view/DULG/UBootBootCountLimit 851eda0ba38SHeiko Schocher 852eda0ba38SHeiko Schocher CONFIG_BOOTCOUNT_ENV 853eda0ba38SHeiko Schocher If no softreset save registers are found on the hardware 854eda0ba38SHeiko Schocher "bootcount" is stored in the environment. To prevent a 855eda0ba38SHeiko Schocher saveenv on all reboots, the environment variable 856eda0ba38SHeiko Schocher "upgrade_available" is used. If "upgrade_available" is 857eda0ba38SHeiko Schocher 0, "bootcount" is always 0, if "upgrade_available" is 858eda0ba38SHeiko Schocher 1 "bootcount" is incremented in the environment. 859eda0ba38SHeiko Schocher So the Userspace Applikation must set the "upgrade_available" 860eda0ba38SHeiko Schocher and "bootcount" variable to 0, if a boot was successfully. 861eda0ba38SHeiko Schocher 862c609719bSwdenk- Pre-Boot Commands: 863c609719bSwdenk CONFIG_PREBOOT 864c609719bSwdenk 865c609719bSwdenk When this option is #defined, the existence of the 866c609719bSwdenk environment variable "preboot" will be checked 867c609719bSwdenk immediately before starting the CONFIG_BOOTDELAY 868c609719bSwdenk countdown and/or running the auto-boot command resp. 869c609719bSwdenk entering interactive mode. 870c609719bSwdenk 871c609719bSwdenk This feature is especially useful when "preboot" is 872c609719bSwdenk automatically generated or modified. For an example 873c609719bSwdenk see the LWMON board specific code: here "preboot" is 874c609719bSwdenk modified when the user holds down a certain 875c609719bSwdenk combination of keys on the (special) keyboard when 876c609719bSwdenk booting the systems 877c609719bSwdenk 878c609719bSwdenk- Serial Download Echo Mode: 879c609719bSwdenk CONFIG_LOADS_ECHO 880c609719bSwdenk If defined to 1, all characters received during a 881c609719bSwdenk serial download (using the "loads" command) are 882c609719bSwdenk echoed back. This might be needed by some terminal 883c609719bSwdenk emulations (like "cu"), but may as well just take 884c609719bSwdenk time on others. This setting #define's the initial 885c609719bSwdenk value of the "loads_echo" environment variable. 886c609719bSwdenk 887602ad3b3SJon Loeliger- Kgdb Serial Baudrate: (if CONFIG_CMD_KGDB is defined) 888c609719bSwdenk CONFIG_KGDB_BAUDRATE 889c609719bSwdenk Select one of the baudrates listed in 8906d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BAUDRATE_TABLE, see below. 891c609719bSwdenk 892c609719bSwdenk- Monitor Functions: 893602ad3b3SJon Loeliger Monitor commands can be included or excluded 894602ad3b3SJon Loeliger from the build by using the #include files 895c6c621bdSStephen Warren <config_cmd_all.h> and #undef'ing unwanted 896c6c621bdSStephen Warren commands, or using <config_cmd_default.h> 897602ad3b3SJon Loeliger and augmenting with additional #define's 898602ad3b3SJon Loeliger for wanted commands. 899c609719bSwdenk 900602ad3b3SJon Loeliger The default command configuration includes all commands 901602ad3b3SJon Loeliger except those marked below with a "*". 902602ad3b3SJon Loeliger 903602ad3b3SJon Loeliger CONFIG_CMD_ASKENV * ask for env variable 904602ad3b3SJon Loeliger CONFIG_CMD_BDI bdinfo 905602ad3b3SJon Loeliger CONFIG_CMD_BEDBUG * Include BedBug Debugger 906602ad3b3SJon Loeliger CONFIG_CMD_BMP * BMP support 907602ad3b3SJon Loeliger CONFIG_CMD_BSP * Board specific commands 908602ad3b3SJon Loeliger CONFIG_CMD_BOOTD bootd 909602ad3b3SJon Loeliger CONFIG_CMD_CACHE * icache, dcache 91008d0d6f3SMichal Simek CONFIG_CMD_CLK * clock command support 911602ad3b3SJon Loeliger CONFIG_CMD_CONSOLE coninfo 912710b9938SMike Frysinger CONFIG_CMD_CRC32 * crc32 913602ad3b3SJon Loeliger CONFIG_CMD_DATE * support for RTC, date/time... 914602ad3b3SJon Loeliger CONFIG_CMD_DHCP * DHCP support 915602ad3b3SJon Loeliger CONFIG_CMD_DIAG * Diagnostics 916a7c93104SPeter Tyser CONFIG_CMD_DS4510 * ds4510 I2C gpio commands 917a7c93104SPeter Tyser CONFIG_CMD_DS4510_INFO * ds4510 I2C info command 918a7c93104SPeter Tyser CONFIG_CMD_DS4510_MEM * ds4510 I2C eeprom/sram commansd 919a7c93104SPeter Tyser CONFIG_CMD_DS4510_RST * ds4510 I2C rst command 920602ad3b3SJon Loeliger CONFIG_CMD_DTT * Digital Therm and Thermostat 921602ad3b3SJon Loeliger CONFIG_CMD_ECHO echo arguments 922246c6922SPeter Tyser CONFIG_CMD_EDITENV edit env variable 923602ad3b3SJon Loeliger CONFIG_CMD_EEPROM * EEPROM read/write support 924602ad3b3SJon Loeliger CONFIG_CMD_ELF * bootelf, bootvx 9255e2b3e0cSJoe Hershberger CONFIG_CMD_ENV_CALLBACK * display details about env callbacks 926fffad71bSJoe Hershberger CONFIG_CMD_ENV_FLAGS * display details about env flags 92788733e2cSAndrew Ruder CONFIG_CMD_ENV_EXISTS * check existence of env variable 9280c79cda0SMike Frysinger CONFIG_CMD_EXPORTENV * export the environment 92903e2ecf6SStephen Warren CONFIG_CMD_EXT2 * ext2 command support 93003e2ecf6SStephen Warren CONFIG_CMD_EXT4 * ext4 command support 93116f4d933SStephen Warren CONFIG_CMD_FS_GENERIC * filesystem commands (e.g. load, ls) 93216f4d933SStephen Warren that work for multiple fs types 933bdab39d3SMike Frysinger CONFIG_CMD_SAVEENV saveenv 934602ad3b3SJon Loeliger CONFIG_CMD_FDC * Floppy Disk Support 93503e2ecf6SStephen Warren CONFIG_CMD_FAT * FAT command support 936602ad3b3SJon Loeliger CONFIG_CMD_FLASH flinfo, erase, protect 937602ad3b3SJon Loeliger CONFIG_CMD_FPGA FPGA device initialization support 9384d98b5c8SVincent Stehlé CONFIG_CMD_FUSE * Device fuse support 93953fdc7efSAnton Staaf CONFIG_CMD_GETTIME * Get time since boot 940a641b979SMike Frysinger CONFIG_CMD_GO * the 'go' command (exec code) 941a000b795SKim Phillips CONFIG_CMD_GREPENV * search environment 942bf36c5d5SSimon Glass CONFIG_CMD_HASH * calculate hash / digest 943602ad3b3SJon Loeliger CONFIG_CMD_HWFLOW * RTS/CTS hw flow control 944602ad3b3SJon Loeliger CONFIG_CMD_I2C * I2C serial bus support 945602ad3b3SJon Loeliger CONFIG_CMD_IDE * IDE harddisk support 946602ad3b3SJon Loeliger CONFIG_CMD_IMI iminfo 9478fdf1e0fSVipin Kumar CONFIG_CMD_IMLS List all images found in NOR flash 9484d98b5c8SVincent Stehlé CONFIG_CMD_IMLS_NAND * List all images found in NAND flash 949602ad3b3SJon Loeliger CONFIG_CMD_IMMAP * IMMR dump support 9500c79cda0SMike Frysinger CONFIG_CMD_IMPORTENV * import an environment 951c167cc02SJoe Hershberger CONFIG_CMD_INI * import data from an ini file into the env 952602ad3b3SJon Loeliger CONFIG_CMD_IRQ * irqinfo 953602ad3b3SJon Loeliger CONFIG_CMD_ITEST Integer/string test of 2 values 954602ad3b3SJon Loeliger CONFIG_CMD_JFFS2 * JFFS2 Support 955602ad3b3SJon Loeliger CONFIG_CMD_KGDB * kgdb 9564d98b5c8SVincent Stehlé CONFIG_CMD_LDRINFO * ldrinfo (display Blackfin loader) 957d22c338eSJoe Hershberger CONFIG_CMD_LINK_LOCAL * link-local IP address auto-configuration 958d22c338eSJoe Hershberger (169.254.*.*) 959602ad3b3SJon Loeliger CONFIG_CMD_LOADB loadb 960602ad3b3SJon Loeliger CONFIG_CMD_LOADS loads 9614d98b5c8SVincent Stehlé CONFIG_CMD_MD5SUM * print md5 message digest 96202c9aa1dSRobin Getz (requires CONFIG_CMD_MEMORY and CONFIG_MD5) 96315a33e49SSimon Glass CONFIG_CMD_MEMINFO * Display detailed memory information 964602ad3b3SJon Loeliger CONFIG_CMD_MEMORY md, mm, nm, mw, cp, cmp, crc, base, 965a2681707SWolfgang Denk loop, loopw 9664d98b5c8SVincent Stehlé CONFIG_CMD_MEMTEST * mtest 967602ad3b3SJon Loeliger CONFIG_CMD_MISC Misc functions like sleep etc 968602ad3b3SJon Loeliger CONFIG_CMD_MMC * MMC memory mapped support 969602ad3b3SJon Loeliger CONFIG_CMD_MII * MII utility commands 97068d7d651SStefan Roese CONFIG_CMD_MTDPARTS * MTD partition support 971602ad3b3SJon Loeliger CONFIG_CMD_NAND * NAND support 972602ad3b3SJon Loeliger CONFIG_CMD_NET bootp, tftpboot, rarpboot 9734d98b5c8SVincent Stehlé CONFIG_CMD_NFS NFS support 974e92739d3SPeter Tyser CONFIG_CMD_PCA953X * PCA953x I2C gpio commands 975e92739d3SPeter Tyser CONFIG_CMD_PCA953X_INFO * PCA953x I2C gpio info command 976602ad3b3SJon Loeliger CONFIG_CMD_PCI * pciinfo 977602ad3b3SJon Loeliger CONFIG_CMD_PCMCIA * PCMCIA support 978602ad3b3SJon Loeliger CONFIG_CMD_PING * send ICMP ECHO_REQUEST to network 979602ad3b3SJon Loeliger host 980602ad3b3SJon Loeliger CONFIG_CMD_PORTIO * Port I/O 981ff048ea9SKenneth Waters CONFIG_CMD_READ * Read raw data from partition 982602ad3b3SJon Loeliger CONFIG_CMD_REGINFO * Register dump 983602ad3b3SJon Loeliger CONFIG_CMD_RUN run command in env variable 984d304931fSSimon Glass CONFIG_CMD_SANDBOX * sb command to access sandbox features 985602ad3b3SJon Loeliger CONFIG_CMD_SAVES * save S record dump 986602ad3b3SJon Loeliger CONFIG_CMD_SCSI * SCSI Support 987602ad3b3SJon Loeliger CONFIG_CMD_SDRAM * print SDRAM configuration information 988602ad3b3SJon Loeliger (requires CONFIG_CMD_I2C) 989602ad3b3SJon Loeliger CONFIG_CMD_SETGETDCR Support for DCR Register access 990602ad3b3SJon Loeliger (4xx only) 991f61ec45eSEric Nelson CONFIG_CMD_SF * Read/write/erase SPI NOR flash 9924d98b5c8SVincent Stehlé CONFIG_CMD_SHA1SUM * print sha1 memory digest 99302c9aa1dSRobin Getz (requires CONFIG_CMD_MEMORY) 9947d861d95SBob Liu CONFIG_CMD_SOFTSWITCH * Soft switch setting command for BF60x 99574de7aefSWolfgang Denk CONFIG_CMD_SOURCE "source" command Support 996602ad3b3SJon Loeliger CONFIG_CMD_SPI * SPI serial bus support 9977a83af07SLuca Ceresoli CONFIG_CMD_TFTPSRV * TFTP transfer in server mode 9981fb7cd49SSimon Glass CONFIG_CMD_TFTPPUT * TFTP put command (upload) 999da83bcd7SJoe Hershberger CONFIG_CMD_TIME * run command and report execution time (ARM specific) 1000da83bcd7SJoe Hershberger CONFIG_CMD_TIMER * access to the system tick timer 1001602ad3b3SJon Loeliger CONFIG_CMD_USB * USB support 1002602ad3b3SJon Loeliger CONFIG_CMD_CDP * Cisco Discover Protocol support 1003c8339f51SMarek Vasut CONFIG_CMD_MFSL * Microblaze FSL support 10044d98b5c8SVincent Stehlé CONFIG_CMD_XIMG Load part of Multi Image 1005c609719bSwdenk 1006c609719bSwdenk 1007c609719bSwdenk EXAMPLE: If you want all functions except of network 1008c609719bSwdenk support you can write: 1009c609719bSwdenk 1010602ad3b3SJon Loeliger #include "config_cmd_all.h" 1011602ad3b3SJon Loeliger #undef CONFIG_CMD_NET 1012c609719bSwdenk 1013213bf8c8SGerald Van Baren Other Commands: 1014213bf8c8SGerald Van Baren fdt (flattened device tree) command: CONFIG_OF_LIBFDT 1015c609719bSwdenk 1016c609719bSwdenk Note: Don't enable the "icache" and "dcache" commands 1017602ad3b3SJon Loeliger (configuration option CONFIG_CMD_CACHE) unless you know 1018c609719bSwdenk what you (and your U-Boot users) are doing. Data 1019c609719bSwdenk cache cannot be enabled on systems like the 8xx or 1020c609719bSwdenk 8260 (where accesses to the IMMR region must be 1021c609719bSwdenk uncached), and it cannot be disabled on all other 1022c609719bSwdenk systems where we (mis-) use the data cache to hold an 1023c609719bSwdenk initial stack and some data. 1024c609719bSwdenk 1025c609719bSwdenk 1026c609719bSwdenk XXX - this list needs to get updated! 1027c609719bSwdenk 1028a5ecbe62SWolfgang Denk- Regular expression support: 1029a5ecbe62SWolfgang Denk CONFIG_REGEX 1030a5ecbe62SWolfgang Denk If this variable is defined, U-Boot is linked against 1031a5ecbe62SWolfgang Denk the SLRE (Super Light Regular Expression) library, 1032a5ecbe62SWolfgang Denk which adds regex support to some commands, as for 1033a5ecbe62SWolfgang Denk example "env grep" and "setexpr". 1034a5ecbe62SWolfgang Denk 103545ba8077SSimon Glass- Device tree: 103645ba8077SSimon Glass CONFIG_OF_CONTROL 103745ba8077SSimon Glass If this variable is defined, U-Boot will use a device tree 103845ba8077SSimon Glass to configure its devices, instead of relying on statically 103945ba8077SSimon Glass compiled #defines in the board file. This option is 104045ba8077SSimon Glass experimental and only available on a few boards. The device 104145ba8077SSimon Glass tree is available in the global data as gd->fdt_blob. 104245ba8077SSimon Glass 10432c0f79e4SSimon Glass U-Boot needs to get its device tree from somewhere. This can 10442c0f79e4SSimon Glass be done using one of the two options below: 1045bbb0b128SSimon Glass 1046bbb0b128SSimon Glass CONFIG_OF_EMBED 1047bbb0b128SSimon Glass If this variable is defined, U-Boot will embed a device tree 1048bbb0b128SSimon Glass binary in its image. This device tree file should be in the 1049bbb0b128SSimon Glass board directory and called <soc>-<board>.dts. The binary file 1050bbb0b128SSimon Glass is then picked up in board_init_f() and made available through 1051bbb0b128SSimon Glass the global data structure as gd->blob. 105245ba8077SSimon Glass 10532c0f79e4SSimon Glass CONFIG_OF_SEPARATE 10542c0f79e4SSimon Glass If this variable is defined, U-Boot will build a device tree 10552c0f79e4SSimon Glass binary. It will be called u-boot.dtb. Architecture-specific 10562c0f79e4SSimon Glass code will locate it at run-time. Generally this works by: 10572c0f79e4SSimon Glass 10582c0f79e4SSimon Glass cat u-boot.bin u-boot.dtb >image.bin 10592c0f79e4SSimon Glass 10602c0f79e4SSimon Glass and in fact, U-Boot does this for you, creating a file called 10612c0f79e4SSimon Glass u-boot-dtb.bin which is useful in the common case. You can 10622c0f79e4SSimon Glass still use the individual files if you need something more 10632c0f79e4SSimon Glass exotic. 10642c0f79e4SSimon Glass 1065c609719bSwdenk- Watchdog: 1066c609719bSwdenk CONFIG_WATCHDOG 1067c609719bSwdenk If this variable is defined, it enables watchdog 10686abe6fb6SDetlev Zundel support for the SoC. There must be support in the SoC 10696abe6fb6SDetlev Zundel specific code for a watchdog. For the 8xx and 8260 10706abe6fb6SDetlev Zundel CPUs, the SIU Watchdog feature is enabled in the SYPCR 10716abe6fb6SDetlev Zundel register. When supported for a specific SoC is 10726abe6fb6SDetlev Zundel available, then no further board specific code should 10736abe6fb6SDetlev Zundel be needed to use it. 10746abe6fb6SDetlev Zundel 10756abe6fb6SDetlev Zundel CONFIG_HW_WATCHDOG 10766abe6fb6SDetlev Zundel When using a watchdog circuitry external to the used 10776abe6fb6SDetlev Zundel SoC, then define this variable and provide board 10786abe6fb6SDetlev Zundel specific code for the "hw_watchdog_reset" function. 1079c609719bSwdenk 1080c1551ea8Sstroese- U-Boot Version: 1081c1551ea8Sstroese CONFIG_VERSION_VARIABLE 1082c1551ea8Sstroese If this variable is defined, an environment variable 1083c1551ea8Sstroese named "ver" is created by U-Boot showing the U-Boot 1084c1551ea8Sstroese version as printed by the "version" command. 1085a1ea8e51SBenoît Thébaudeau Any change to this variable will be reverted at the 1086a1ea8e51SBenoît Thébaudeau next reset. 1087c1551ea8Sstroese 1088c609719bSwdenk- Real-Time Clock: 1089c609719bSwdenk 1090602ad3b3SJon Loeliger When CONFIG_CMD_DATE is selected, the type of the RTC 1091c609719bSwdenk has to be selected, too. Define exactly one of the 1092c609719bSwdenk following options: 1093c609719bSwdenk 1094c609719bSwdenk CONFIG_RTC_MPC8xx - use internal RTC of MPC8xx 1095c609719bSwdenk CONFIG_RTC_PCF8563 - use Philips PCF8563 RTC 10964e8b7544SFabio Estevam CONFIG_RTC_MC13XXX - use MC13783 or MC13892 RTC 1097c609719bSwdenk CONFIG_RTC_MC146818 - use MC146818 RTC 10981cb8e980Swdenk CONFIG_RTC_DS1307 - use Maxim, Inc. DS1307 RTC 1099c609719bSwdenk CONFIG_RTC_DS1337 - use Maxim, Inc. DS1337 RTC 11007f70e853Swdenk CONFIG_RTC_DS1338 - use Maxim, Inc. DS1338 RTC 11013bac3513Swdenk CONFIG_RTC_DS164x - use Dallas DS164x RTC 11029536dfccSTor Krill CONFIG_RTC_ISL1208 - use Intersil ISL1208 RTC 11034c0d4c3bSwdenk CONFIG_RTC_MAX6900 - use Maxim, Inc. MAX6900 RTC 11046d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_RTC_DS1337_NOOSC - Turn off the OSC output for DS1337 110571d19f30SHeiko Schocher CONFIG_SYS_RV3029_TCR - enable trickle charger on 110671d19f30SHeiko Schocher RV3029 RTC. 1107c609719bSwdenk 1108b37c7e5eSwdenk Note that if the RTC uses I2C, then the I2C interface 1109b37c7e5eSwdenk must also be configured. See I2C Support, below. 1110b37c7e5eSwdenk 1111e92739d3SPeter Tyser- GPIO Support: 1112e92739d3SPeter Tyser CONFIG_PCA953X - use NXP's PCA953X series I2C GPIO 1113e92739d3SPeter Tyser 11145dec49caSChris Packham The CONFIG_SYS_I2C_PCA953X_WIDTH option specifies a list of 11155dec49caSChris Packham chip-ngpio pairs that tell the PCA953X driver the number of 11165dec49caSChris Packham pins supported by a particular chip. 11175dec49caSChris Packham 1118e92739d3SPeter Tyser Note that if the GPIO device uses I2C, then the I2C interface 1119e92739d3SPeter Tyser must also be configured. See I2C Support, below. 1120e92739d3SPeter Tyser 1121c609719bSwdenk- Timestamp Support: 1122c609719bSwdenk 1123c609719bSwdenk When CONFIG_TIMESTAMP is selected, the timestamp 1124c609719bSwdenk (date and time) of an image is printed by image 1125c609719bSwdenk commands like bootm or iminfo. This option is 1126602ad3b3SJon Loeliger automatically enabled when you select CONFIG_CMD_DATE . 1127c609719bSwdenk 1128923c46f9SKarl O. Pinc- Partition Labels (disklabels) Supported: 1129923c46f9SKarl O. Pinc Zero or more of the following: 1130923c46f9SKarl O. Pinc CONFIG_MAC_PARTITION Apple's MacOS partition table. 1131923c46f9SKarl O. Pinc CONFIG_DOS_PARTITION MS Dos partition table, traditional on the 1132923c46f9SKarl O. Pinc Intel architecture, USB sticks, etc. 1133923c46f9SKarl O. Pinc CONFIG_ISO_PARTITION ISO partition table, used on CDROM etc. 1134923c46f9SKarl O. Pinc CONFIG_EFI_PARTITION GPT partition table, common when EFI is the 1135923c46f9SKarl O. Pinc bootloader. Note 2TB partition limit; see 1136923c46f9SKarl O. Pinc disk/part_efi.c 1137923c46f9SKarl O. Pinc CONFIG_MTD_PARTITIONS Memory Technology Device partition table. 1138c609719bSwdenk 1139602ad3b3SJon Loeliger If IDE or SCSI support is enabled (CONFIG_CMD_IDE or 1140218ca724SWolfgang Denk CONFIG_CMD_SCSI) you must configure support for at 1141923c46f9SKarl O. Pinc least one non-MTD partition type as well. 1142c609719bSwdenk 1143c609719bSwdenk- IDE Reset method: 11444d13cbadSwdenk CONFIG_IDE_RESET_ROUTINE - this is defined in several 11454d13cbadSwdenk board configurations files but used nowhere! 1146c609719bSwdenk 11474d13cbadSwdenk CONFIG_IDE_RESET - is this is defined, IDE Reset will 11484d13cbadSwdenk be performed by calling the function 11494d13cbadSwdenk ide_set_reset(int reset) 11504d13cbadSwdenk which has to be defined in a board specific file 1151c609719bSwdenk 1152c609719bSwdenk- ATAPI Support: 1153c609719bSwdenk CONFIG_ATAPI 1154c609719bSwdenk 1155c609719bSwdenk Set this to enable ATAPI support. 1156c609719bSwdenk 1157c40b2956Swdenk- LBA48 Support 1158c40b2956Swdenk CONFIG_LBA48 1159c40b2956Swdenk 1160c40b2956Swdenk Set this to enable support for disks larger than 137GB 11614b142febSHeiko Schocher Also look at CONFIG_SYS_64BIT_LBA. 1162c40b2956Swdenk Whithout these , LBA48 support uses 32bit variables and will 'only' 1163c40b2956Swdenk support disks up to 2.1TB. 1164c40b2956Swdenk 11656d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_64BIT_LBA: 1166c40b2956Swdenk When enabled, makes the IDE subsystem use 64bit sector addresses. 1167c40b2956Swdenk Default is 32bit. 1168c40b2956Swdenk 1169c609719bSwdenk- SCSI Support: 1170c609719bSwdenk At the moment only there is only support for the 1171c609719bSwdenk SYM53C8XX SCSI controller; define 1172c609719bSwdenk CONFIG_SCSI_SYM53C8XX to enable it. 1173c609719bSwdenk 11746d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_LUN [8], CONFIG_SYS_SCSI_MAX_SCSI_ID [7] and 11756d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_DEVICE [CONFIG_SYS_SCSI_MAX_SCSI_ID * 11766d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_LUN] can be adjusted to define the 1177c609719bSwdenk maximum numbers of LUNs, SCSI ID's and target 1178c609719bSwdenk devices. 11796d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_SYM53C8XX_CCF to fix clock timing (80Mhz) 1180c609719bSwdenk 1181447c031bSStefan Reinauer The environment variable 'scsidevs' is set to the number of 1182447c031bSStefan Reinauer SCSI devices found during the last scan. 1183447c031bSStefan Reinauer 1184c609719bSwdenk- NETWORK Support (PCI): 1185682011ffSwdenk CONFIG_E1000 1186ce5207e1SKyle Moffett Support for Intel 8254x/8257x gigabit chips. 1187ce5207e1SKyle Moffett 1188ce5207e1SKyle Moffett CONFIG_E1000_SPI 1189ce5207e1SKyle Moffett Utility code for direct access to the SPI bus on Intel 8257x. 1190ce5207e1SKyle Moffett This does not do anything useful unless you set at least one 1191ce5207e1SKyle Moffett of CONFIG_CMD_E1000 or CONFIG_E1000_SPI_GENERIC. 1192ce5207e1SKyle Moffett 1193ce5207e1SKyle Moffett CONFIG_E1000_SPI_GENERIC 1194ce5207e1SKyle Moffett Allow generic access to the SPI bus on the Intel 8257x, for 1195ce5207e1SKyle Moffett example with the "sspi" command. 1196ce5207e1SKyle Moffett 1197ce5207e1SKyle Moffett CONFIG_CMD_E1000 1198ce5207e1SKyle Moffett Management command for E1000 devices. When used on devices 1199ce5207e1SKyle Moffett with SPI support you can reprogram the EEPROM from U-Boot. 1200682011ffSwdenk 1201ac3315c2SAndre Schwarz CONFIG_E1000_FALLBACK_MAC 120211ccc33fSMarcel Ziswiler default MAC for empty EEPROM after production. 1203ac3315c2SAndre Schwarz 1204c609719bSwdenk CONFIG_EEPRO100 1205c609719bSwdenk Support for Intel 82557/82559/82559ER chips. 120611ccc33fSMarcel Ziswiler Optional CONFIG_EEPRO100_SROM_WRITE enables EEPROM 1207c609719bSwdenk write routine for first time initialisation. 1208c609719bSwdenk 1209c609719bSwdenk CONFIG_TULIP 1210c609719bSwdenk Support for Digital 2114x chips. 1211c609719bSwdenk Optional CONFIG_TULIP_SELECT_MEDIA for board specific 1212c609719bSwdenk modem chip initialisation (KS8761/QS6611). 1213c609719bSwdenk 1214c609719bSwdenk CONFIG_NATSEMI 1215c609719bSwdenk Support for National dp83815 chips. 1216c609719bSwdenk 1217c609719bSwdenk CONFIG_NS8382X 1218c609719bSwdenk Support for National dp8382[01] gigabit chips. 1219c609719bSwdenk 122045219c46Swdenk- NETWORK Support (other): 122145219c46Swdenk 1222c041e9d2SJens Scharsig CONFIG_DRIVER_AT91EMAC 1223c041e9d2SJens Scharsig Support for AT91RM9200 EMAC. 1224c041e9d2SJens Scharsig 1225c041e9d2SJens Scharsig CONFIG_RMII 1226c041e9d2SJens Scharsig Define this to use reduced MII inteface 1227c041e9d2SJens Scharsig 1228c041e9d2SJens Scharsig CONFIG_DRIVER_AT91EMAC_QUIET 1229c041e9d2SJens Scharsig If this defined, the driver is quiet. 1230c041e9d2SJens Scharsig The driver doen't show link status messages. 1231c041e9d2SJens Scharsig 1232efdd7319SRob Herring CONFIG_CALXEDA_XGMAC 1233efdd7319SRob Herring Support for the Calxeda XGMAC device 1234efdd7319SRob Herring 12353bb46d23SAshok CONFIG_LAN91C96 123645219c46Swdenk Support for SMSC's LAN91C96 chips. 123745219c46Swdenk 123845219c46Swdenk CONFIG_LAN91C96_BASE 123945219c46Swdenk Define this to hold the physical address 124045219c46Swdenk of the LAN91C96's I/O space 124145219c46Swdenk 124245219c46Swdenk CONFIG_LAN91C96_USE_32_BIT 124345219c46Swdenk Define this to enable 32 bit addressing 124445219c46Swdenk 12453bb46d23SAshok CONFIG_SMC91111 1246f39748aeSwdenk Support for SMSC's LAN91C111 chip 1247f39748aeSwdenk 1248f39748aeSwdenk CONFIG_SMC91111_BASE 1249f39748aeSwdenk Define this to hold the physical address 1250f39748aeSwdenk of the device (I/O space) 1251f39748aeSwdenk 1252f39748aeSwdenk CONFIG_SMC_USE_32_BIT 1253f39748aeSwdenk Define this if data bus is 32 bits 1254f39748aeSwdenk 1255f39748aeSwdenk CONFIG_SMC_USE_IOFUNCS 1256f39748aeSwdenk Define this to use i/o functions instead of macros 1257f39748aeSwdenk (some hardware wont work with macros) 1258f39748aeSwdenk 1259dc02badaSHeiko Schocher CONFIG_DRIVER_TI_EMAC 1260dc02badaSHeiko Schocher Support for davinci emac 1261dc02badaSHeiko Schocher 1262dc02badaSHeiko Schocher CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT 1263dc02badaSHeiko Schocher Define this if you have more then 3 PHYs. 1264dc02badaSHeiko Schocher 1265b3dbf4a5SMacpaul Lin CONFIG_FTGMAC100 1266b3dbf4a5SMacpaul Lin Support for Faraday's FTGMAC100 Gigabit SoC Ethernet 1267b3dbf4a5SMacpaul Lin 1268b3dbf4a5SMacpaul Lin CONFIG_FTGMAC100_EGIGA 1269b3dbf4a5SMacpaul Lin Define this to use GE link update with gigabit PHY. 1270b3dbf4a5SMacpaul Lin Define this if FTGMAC100 is connected to gigabit PHY. 1271b3dbf4a5SMacpaul Lin If your system has 10/100 PHY only, it might not occur 1272b3dbf4a5SMacpaul Lin wrong behavior. Because PHY usually return timeout or 1273b3dbf4a5SMacpaul Lin useless data when polling gigabit status and gigabit 1274b3dbf4a5SMacpaul Lin control registers. This behavior won't affect the 1275b3dbf4a5SMacpaul Lin correctnessof 10/100 link speed update. 1276b3dbf4a5SMacpaul Lin 1277c2fff331SMike Rapoport CONFIG_SMC911X 1278557b377dSJens Gehrlein Support for SMSC's LAN911x and LAN921x chips 1279557b377dSJens Gehrlein 1280c2fff331SMike Rapoport CONFIG_SMC911X_BASE 1281557b377dSJens Gehrlein Define this to hold the physical address 1282557b377dSJens Gehrlein of the device (I/O space) 1283557b377dSJens Gehrlein 1284c2fff331SMike Rapoport CONFIG_SMC911X_32_BIT 1285557b377dSJens Gehrlein Define this if data bus is 32 bits 1286557b377dSJens Gehrlein 1287c2fff331SMike Rapoport CONFIG_SMC911X_16_BIT 1288557b377dSJens Gehrlein Define this if data bus is 16 bits. If your processor 1289557b377dSJens Gehrlein automatically converts one 32 bit word to two 16 bit 1290c2fff331SMike Rapoport words you may also try CONFIG_SMC911X_32_BIT. 1291557b377dSJens Gehrlein 12923d0075faSYoshihiro Shimoda CONFIG_SH_ETHER 12933d0075faSYoshihiro Shimoda Support for Renesas on-chip Ethernet controller 12943d0075faSYoshihiro Shimoda 12953d0075faSYoshihiro Shimoda CONFIG_SH_ETHER_USE_PORT 12963d0075faSYoshihiro Shimoda Define the number of ports to be used 12973d0075faSYoshihiro Shimoda 12983d0075faSYoshihiro Shimoda CONFIG_SH_ETHER_PHY_ADDR 12993d0075faSYoshihiro Shimoda Define the ETH PHY's address 13003d0075faSYoshihiro Shimoda 130168260aabSYoshihiro Shimoda CONFIG_SH_ETHER_CACHE_WRITEBACK 130268260aabSYoshihiro Shimoda If this option is set, the driver enables cache flush. 130368260aabSYoshihiro Shimoda 13045e124724SVadim Bendebury- TPM Support: 130590899cc0SChe-liang Chiou CONFIG_TPM 130690899cc0SChe-liang Chiou Support TPM devices. 130790899cc0SChe-liang Chiou 13081b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C 13091b393db5STom Wai-Hong Tam Support for i2c bus TPM devices. Only one device 13101b393db5STom Wai-Hong Tam per system is supported at this time. 13111b393db5STom Wai-Hong Tam 13121b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_BUS_NUMBER 13131b393db5STom Wai-Hong Tam Define the the i2c bus number for the TPM device 13141b393db5STom Wai-Hong Tam 13151b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_SLAVE_ADDRESS 13161b393db5STom Wai-Hong Tam Define the TPM's address on the i2c bus 13171b393db5STom Wai-Hong Tam 13181b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_BURST_LIMITATION 13191b393db5STom Wai-Hong Tam Define the burst count bytes upper limit 13201b393db5STom Wai-Hong Tam 1321c01939c7SDirk Eibach CONFIG_TPM_ATMEL_TWI 1322c01939c7SDirk Eibach Support for Atmel TWI TPM device. Requires I2C support. 1323c01939c7SDirk Eibach 132490899cc0SChe-liang Chiou CONFIG_TPM_TIS_LPC 13255e124724SVadim Bendebury Support for generic parallel port TPM devices. Only one device 13265e124724SVadim Bendebury per system is supported at this time. 13275e124724SVadim Bendebury 13285e124724SVadim Bendebury CONFIG_TPM_TIS_BASE_ADDRESS 13295e124724SVadim Bendebury Base address where the generic TPM device is mapped 13305e124724SVadim Bendebury to. Contemporary x86 systems usually map it at 13315e124724SVadim Bendebury 0xfed40000. 13325e124724SVadim Bendebury 1333be6c1529SReinhard Pfau CONFIG_CMD_TPM 1334be6c1529SReinhard Pfau Add tpm monitor functions. 1335be6c1529SReinhard Pfau Requires CONFIG_TPM. If CONFIG_TPM_AUTH_SESSIONS is set, also 1336be6c1529SReinhard Pfau provides monitor access to authorized functions. 1337be6c1529SReinhard Pfau 1338be6c1529SReinhard Pfau CONFIG_TPM 1339be6c1529SReinhard Pfau Define this to enable the TPM support library which provides 1340be6c1529SReinhard Pfau functional interfaces to some TPM commands. 1341be6c1529SReinhard Pfau Requires support for a TPM device. 1342be6c1529SReinhard Pfau 1343be6c1529SReinhard Pfau CONFIG_TPM_AUTH_SESSIONS 1344be6c1529SReinhard Pfau Define this to enable authorized functions in the TPM library. 1345be6c1529SReinhard Pfau Requires CONFIG_TPM and CONFIG_SHA1. 1346be6c1529SReinhard Pfau 1347c609719bSwdenk- USB Support: 1348c609719bSwdenk At the moment only the UHCI host controller is 13494d13cbadSwdenk supported (PIP405, MIP405, MPC5200); define 1350c609719bSwdenk CONFIG_USB_UHCI to enable it. 1351c609719bSwdenk define CONFIG_USB_KEYBOARD to enable the USB Keyboard 135230d56faeSwdenk and define CONFIG_USB_STORAGE to enable the USB 1353c609719bSwdenk storage devices. 1354c609719bSwdenk Note: 1355c609719bSwdenk Supported are USB Keyboards and USB Floppy drives 1356c609719bSwdenk (TEAC FD-05PUB). 13574d13cbadSwdenk MPC5200 USB requires additional defines: 13584d13cbadSwdenk CONFIG_USB_CLOCK 13594d13cbadSwdenk for 528 MHz Clock: 0x0001bbbb 1360307ecb6dSEric Millbrandt CONFIG_PSC3_USB 1361307ecb6dSEric Millbrandt for USB on PSC3 13624d13cbadSwdenk CONFIG_USB_CONFIG 13634d13cbadSwdenk for differential drivers: 0x00001000 13644d13cbadSwdenk for single ended drivers: 0x00005000 1365307ecb6dSEric Millbrandt for differential drivers on PSC3: 0x00000100 1366307ecb6dSEric Millbrandt for single ended drivers on PSC3: 0x00004100 13676d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_EVENT_POLL 1368fdcfaa1bSZhang Wei May be defined to allow interrupt polling 1369fdcfaa1bSZhang Wei instead of using asynchronous interrupts 13704d13cbadSwdenk 13719ab4ce22SSimon Glass CONFIG_USB_EHCI_TXFIFO_THRESH enables setting of the 13729ab4ce22SSimon Glass txfilltuning field in the EHCI controller on reset. 13739ab4ce22SSimon Glass 1374aa155058SKuo-Jung Su CONFIG_USB_HUB_MIN_POWER_ON_DELAY defines the minimum 1375aa155058SKuo-Jung Su interval for usb hub power-on delay.(minimum 100msec) 1376aa155058SKuo-Jung Su 137716c8d5e7SWolfgang Denk- USB Device: 137816c8d5e7SWolfgang Denk Define the below if you wish to use the USB console. 137916c8d5e7SWolfgang Denk Once firmware is rebuilt from a serial console issue the 138016c8d5e7SWolfgang Denk command "setenv stdin usbtty; setenv stdout usbtty" and 138111ccc33fSMarcel Ziswiler attach your USB cable. The Unix command "dmesg" should print 138216c8d5e7SWolfgang Denk it has found a new device. The environment variable usbtty 138316c8d5e7SWolfgang Denk can be set to gserial or cdc_acm to enable your device to 138416c8d5e7SWolfgang Denk appear to a USB host as a Linux gserial device or a 138516c8d5e7SWolfgang Denk Common Device Class Abstract Control Model serial device. 138616c8d5e7SWolfgang Denk If you select usbtty = gserial you should be able to enumerate 138716c8d5e7SWolfgang Denk a Linux host by 138816c8d5e7SWolfgang Denk # modprobe usbserial vendor=0xVendorID product=0xProductID 138916c8d5e7SWolfgang Denk else if using cdc_acm, simply setting the environment 139016c8d5e7SWolfgang Denk variable usbtty to be cdc_acm should suffice. The following 139116c8d5e7SWolfgang Denk might be defined in YourBoardName.h 139216c8d5e7SWolfgang Denk 139316c8d5e7SWolfgang Denk CONFIG_USB_DEVICE 139416c8d5e7SWolfgang Denk Define this to build a UDC device 139516c8d5e7SWolfgang Denk 139616c8d5e7SWolfgang Denk CONFIG_USB_TTY 139716c8d5e7SWolfgang Denk Define this to have a tty type of device available to 139816c8d5e7SWolfgang Denk talk to the UDC device 139916c8d5e7SWolfgang Denk 1400f9da0f89SVipin KUMAR CONFIG_USBD_HS 1401f9da0f89SVipin KUMAR Define this to enable the high speed support for usb 1402f9da0f89SVipin KUMAR device and usbtty. If this feature is enabled, a routine 1403f9da0f89SVipin KUMAR int is_usbd_high_speed(void) 1404f9da0f89SVipin KUMAR also needs to be defined by the driver to dynamically poll 1405f9da0f89SVipin KUMAR whether the enumeration has succeded at high speed or full 1406f9da0f89SVipin KUMAR speed. 1407f9da0f89SVipin KUMAR 14086d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CONSOLE_IS_IN_ENV 140916c8d5e7SWolfgang Denk Define this if you want stdin, stdout &/or stderr to 141016c8d5e7SWolfgang Denk be set to usbtty. 141116c8d5e7SWolfgang Denk 141216c8d5e7SWolfgang Denk mpc8xx: 14136d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_EXTC_CLK 0xBLAH 141416c8d5e7SWolfgang Denk Derive USB clock from external clock "blah" 14156d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_USB_EXTC_CLK 0x02 141616c8d5e7SWolfgang Denk 14176d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_BRG_CLK 0xBLAH 141816c8d5e7SWolfgang Denk Derive USB clock from brgclk 14196d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_USB_BRG_CLK 0x04 142016c8d5e7SWolfgang Denk 142116c8d5e7SWolfgang Denk If you have a USB-IF assigned VendorID then you may wish to 142216c8d5e7SWolfgang Denk define your own vendor specific values either in BoardName.h 142316c8d5e7SWolfgang Denk or directly in usbd_vendor_info.h. If you don't define 142416c8d5e7SWolfgang Denk CONFIG_USBD_MANUFACTURER, CONFIG_USBD_PRODUCT_NAME, 142516c8d5e7SWolfgang Denk CONFIG_USBD_VENDORID and CONFIG_USBD_PRODUCTID, then U-Boot 142616c8d5e7SWolfgang Denk should pretend to be a Linux device to it's target host. 142716c8d5e7SWolfgang Denk 142816c8d5e7SWolfgang Denk CONFIG_USBD_MANUFACTURER 142916c8d5e7SWolfgang Denk Define this string as the name of your company for 143016c8d5e7SWolfgang Denk - CONFIG_USBD_MANUFACTURER "my company" 143116c8d5e7SWolfgang Denk 143216c8d5e7SWolfgang Denk CONFIG_USBD_PRODUCT_NAME 143316c8d5e7SWolfgang Denk Define this string as the name of your product 143416c8d5e7SWolfgang Denk - CONFIG_USBD_PRODUCT_NAME "acme usb device" 143516c8d5e7SWolfgang Denk 143616c8d5e7SWolfgang Denk CONFIG_USBD_VENDORID 143716c8d5e7SWolfgang Denk Define this as your assigned Vendor ID from the USB 143816c8d5e7SWolfgang Denk Implementors Forum. This *must* be a genuine Vendor ID 143916c8d5e7SWolfgang Denk to avoid polluting the USB namespace. 144016c8d5e7SWolfgang Denk - CONFIG_USBD_VENDORID 0xFFFF 144116c8d5e7SWolfgang Denk 144216c8d5e7SWolfgang Denk CONFIG_USBD_PRODUCTID 144316c8d5e7SWolfgang Denk Define this as the unique Product ID 144416c8d5e7SWolfgang Denk for your device 144516c8d5e7SWolfgang Denk - CONFIG_USBD_PRODUCTID 0xFFFF 1446c609719bSwdenk 1447351e9b20SPrzemyslaw Marczak Some USB device drivers may need to check USB cable attachment. 1448351e9b20SPrzemyslaw Marczak In this case you can enable following config in BoardName.h: 1449351e9b20SPrzemyslaw Marczak CONFIG_USB_CABLE_CHECK 1450351e9b20SPrzemyslaw Marczak This enables function definition: 1451351e9b20SPrzemyslaw Marczak - usb_cable_connected() in include/usb.h 1452351e9b20SPrzemyslaw Marczak Implementation of this function is board-specific. 1453351e9b20SPrzemyslaw Marczak 1454d70a560fSIgor Grinberg- ULPI Layer Support: 1455d70a560fSIgor Grinberg The ULPI (UTMI Low Pin (count) Interface) PHYs are supported via 1456d70a560fSIgor Grinberg the generic ULPI layer. The generic layer accesses the ULPI PHY 1457d70a560fSIgor Grinberg via the platform viewport, so you need both the genric layer and 1458d70a560fSIgor Grinberg the viewport enabled. Currently only Chipidea/ARC based 1459d70a560fSIgor Grinberg viewport is supported. 1460d70a560fSIgor Grinberg To enable the ULPI layer support, define CONFIG_USB_ULPI and 1461d70a560fSIgor Grinberg CONFIG_USB_ULPI_VIEWPORT in your board configuration file. 14626d365ea0SLucas Stach If your ULPI phy needs a different reference clock than the 14636d365ea0SLucas Stach standard 24 MHz then you have to define CONFIG_ULPI_REF_CLK to 14646d365ea0SLucas Stach the appropriate value in Hz. 1465c609719bSwdenk 1466c609719bSwdenk- MMC Support: 1467c609719bSwdenk The MMC controller on the Intel PXA is supported. To 1468c609719bSwdenk enable this define CONFIG_MMC. The MMC can be 1469c609719bSwdenk accessed from the boot prompt by mapping the device 1470c609719bSwdenk to physical memory similar to flash. Command line is 1471602ad3b3SJon Loeliger enabled with CONFIG_CMD_MMC. The MMC driver also works with 1472602ad3b3SJon Loeliger the FAT fs. This is enabled with CONFIG_CMD_FAT. 1473c609719bSwdenk 1474afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF 1475afb35666SYoshihiro Shimoda Support for Renesas on-chip MMCIF controller 1476afb35666SYoshihiro Shimoda 1477afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF_ADDR 1478afb35666SYoshihiro Shimoda Define the base address of MMCIF registers 1479afb35666SYoshihiro Shimoda 1480afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF_CLK 1481afb35666SYoshihiro Shimoda Define the clock frequency for MMCIF 1482afb35666SYoshihiro Shimoda 1483b3ba6e94STom Rini- USB Device Firmware Update (DFU) class support: 1484b3ba6e94STom Rini CONFIG_DFU_FUNCTION 1485b3ba6e94STom Rini This enables the USB portion of the DFU USB class 1486b3ba6e94STom Rini 1487b3ba6e94STom Rini CONFIG_CMD_DFU 1488b3ba6e94STom Rini This enables the command "dfu" which is used to have 1489b3ba6e94STom Rini U-Boot create a DFU class device via USB. This command 1490b3ba6e94STom Rini requires that the "dfu_alt_info" environment variable be 1491b3ba6e94STom Rini set and define the alt settings to expose to the host. 1492b3ba6e94STom Rini 1493b3ba6e94STom Rini CONFIG_DFU_MMC 1494b3ba6e94STom Rini This enables support for exposing (e)MMC devices via DFU. 1495b3ba6e94STom Rini 1496c6631764SPantelis Antoniou CONFIG_DFU_NAND 1497c6631764SPantelis Antoniou This enables support for exposing NAND devices via DFU. 1498c6631764SPantelis Antoniou 1499a9479f04SAfzal Mohammed CONFIG_DFU_RAM 1500a9479f04SAfzal Mohammed This enables support for exposing RAM via DFU. 1501a9479f04SAfzal Mohammed Note: DFU spec refer to non-volatile memory usage, but 1502a9479f04SAfzal Mohammed allow usages beyond the scope of spec - here RAM usage, 1503a9479f04SAfzal Mohammed one that would help mostly the developer. 1504a9479f04SAfzal Mohammed 1505e7e75c70SHeiko Schocher CONFIG_SYS_DFU_DATA_BUF_SIZE 1506e7e75c70SHeiko Schocher Dfu transfer uses a buffer before writing data to the 1507e7e75c70SHeiko Schocher raw storage device. Make the size (in bytes) of this buffer 1508e7e75c70SHeiko Schocher configurable. The size of this buffer is also configurable 1509e7e75c70SHeiko Schocher through the "dfu_bufsiz" environment variable. 1510e7e75c70SHeiko Schocher 1511ea2453d5SPantelis Antoniou CONFIG_SYS_DFU_MAX_FILE_SIZE 1512ea2453d5SPantelis Antoniou When updating files rather than the raw storage device, 1513ea2453d5SPantelis Antoniou we use a static buffer to copy the file into and then write 1514ea2453d5SPantelis Antoniou the buffer once we've been given the whole file. Define 1515ea2453d5SPantelis Antoniou this to the maximum filesize (in bytes) for the buffer. 1516ea2453d5SPantelis Antoniou Default is 4 MiB if undefined. 1517ea2453d5SPantelis Antoniou 15186705d81eSwdenk- Journaling Flash filesystem support: 15196705d81eSwdenk CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE, 15206705d81eSwdenk CONFIG_JFFS2_NAND_DEV 15216705d81eSwdenk Define these for a default partition on a NAND device 15226705d81eSwdenk 15236d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS2_FIRST_SECTOR, 15246d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS2_FIRST_BANK, CONFIG_SYS_JFFS2_NUM_BANKS 15256705d81eSwdenk Define these for a default partition on a NOR device 15266705d81eSwdenk 15276d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS_CUSTOM_PART 15286705d81eSwdenk Define this to create an own partition. You have to provide a 15296705d81eSwdenk function struct part_info* jffs2_part_info(int part_num) 15306705d81eSwdenk 15316705d81eSwdenk If you define only one JFFS2 partition you may also want to 15326d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_JFFS_SINGLE_PART 1 15336705d81eSwdenk to disable the command chpart. This is the default when you 15346705d81eSwdenk have not defined a custom partition 15356705d81eSwdenk 1536c30a15e5SDonggeun Kim- FAT(File Allocation Table) filesystem write function support: 1537c30a15e5SDonggeun Kim CONFIG_FAT_WRITE 1538656f4c65SDonggeun Kim 1539656f4c65SDonggeun Kim Define this to enable support for saving memory data as a 1540656f4c65SDonggeun Kim file in FAT formatted partition. 1541656f4c65SDonggeun Kim 1542656f4c65SDonggeun Kim This will also enable the command "fatwrite" enabling the 1543656f4c65SDonggeun Kim user to write files to FAT. 1544c30a15e5SDonggeun Kim 154584cd9327SGabe BlackCBFS (Coreboot Filesystem) support 154684cd9327SGabe Black CONFIG_CMD_CBFS 154784cd9327SGabe Black 154884cd9327SGabe Black Define this to enable support for reading from a Coreboot 154984cd9327SGabe Black filesystem. Available commands are cbfsinit, cbfsinfo, cbfsls 155084cd9327SGabe Black and cbfsload. 155184cd9327SGabe Black 1552c609719bSwdenk- Keyboard Support: 1553c609719bSwdenk CONFIG_ISA_KEYBOARD 1554c609719bSwdenk 1555c609719bSwdenk Define this to enable standard (PC-Style) keyboard 1556c609719bSwdenk support 1557c609719bSwdenk 1558c609719bSwdenk CONFIG_I8042_KBD 1559c609719bSwdenk Standard PC keyboard driver with US (is default) and 1560c609719bSwdenk GERMAN key layout (switch via environment 'keymap=de') support. 1561c609719bSwdenk Export function i8042_kbd_init, i8042_tstc and i8042_getc 1562c609719bSwdenk for cfb_console. Supports cursor blinking. 1563c609719bSwdenk 1564713cb680SHung-ying Tyan CONFIG_CROS_EC_KEYB 1565713cb680SHung-ying Tyan Enables a Chrome OS keyboard using the CROS_EC interface. 1566713cb680SHung-ying Tyan This uses CROS_EC to communicate with a second microcontroller 1567713cb680SHung-ying Tyan which provides key scans on request. 1568713cb680SHung-ying Tyan 1569c609719bSwdenk- Video support: 1570c609719bSwdenk CONFIG_VIDEO 1571c609719bSwdenk 1572c609719bSwdenk Define this to enable video support (for output to 1573c609719bSwdenk video). 1574c609719bSwdenk 1575c609719bSwdenk CONFIG_VIDEO_CT69000 1576c609719bSwdenk 1577c609719bSwdenk Enable Chips & Technologies 69000 Video chip 1578c609719bSwdenk 1579c609719bSwdenk CONFIG_VIDEO_SMI_LYNXEM 1580eeb1b77bSwdenk Enable Silicon Motion SMI 712/710/810 Video chip. The 1581eeb1b77bSwdenk video output is selected via environment 'videoout' 1582eeb1b77bSwdenk (1 = LCD and 2 = CRT). If videoout is undefined, CRT is 1583eeb1b77bSwdenk assumed. 1584c609719bSwdenk 1585eeb1b77bSwdenk For the CT69000 and SMI_LYNXEM drivers, videomode is 158611ccc33fSMarcel Ziswiler selected via environment 'videomode'. Two different ways 1587eeb1b77bSwdenk are possible: 1588eeb1b77bSwdenk - "videomode=num" 'num' is a standard LiLo mode numbers. 1589eeb1b77bSwdenk Following standard modes are supported (* is default): 1590eeb1b77bSwdenk 1591eeb1b77bSwdenk Colors 640x480 800x600 1024x768 1152x864 1280x1024 1592eeb1b77bSwdenk -------------+--------------------------------------------- 1593eeb1b77bSwdenk 8 bits | 0x301* 0x303 0x305 0x161 0x307 1594eeb1b77bSwdenk 15 bits | 0x310 0x313 0x316 0x162 0x319 1595eeb1b77bSwdenk 16 bits | 0x311 0x314 0x317 0x163 0x31A 1596eeb1b77bSwdenk 24 bits | 0x312 0x315 0x318 ? 0x31B 1597eeb1b77bSwdenk -------------+--------------------------------------------- 1598c609719bSwdenk (i.e. setenv videomode 317; saveenv; reset;) 1599c609719bSwdenk 1600eeb1b77bSwdenk - "videomode=bootargs" all the video parameters are parsed 16017817cb20SMarcel Ziswiler from the bootargs. (See drivers/video/videomodes.c) 1602eeb1b77bSwdenk 1603eeb1b77bSwdenk 1604a6c7ad2fSwdenk CONFIG_VIDEO_SED13806 1605a6c7ad2fSwdenk Enable Epson SED13806 driver. This driver supports 8bpp 1606a6c7ad2fSwdenk and 16bpp modes defined by CONFIG_VIDEO_SED13806_8BPP 1607a6c7ad2fSwdenk or CONFIG_VIDEO_SED13806_16BPP 1608a6c7ad2fSwdenk 16097d3053fbSTimur Tabi CONFIG_FSL_DIU_FB 16107d3053fbSTimur Tabi Enable the Freescale DIU video driver. Reference boards for 16117d3053fbSTimur Tabi SOCs that have a DIU should define this macro to enable DIU 16127d3053fbSTimur Tabi support, and should also define these other macros: 16137d3053fbSTimur Tabi 16147d3053fbSTimur Tabi CONFIG_SYS_DIU_ADDR 16157d3053fbSTimur Tabi CONFIG_VIDEO 16167d3053fbSTimur Tabi CONFIG_CMD_BMP 16177d3053fbSTimur Tabi CONFIG_CFB_CONSOLE 16187d3053fbSTimur Tabi CONFIG_VIDEO_SW_CURSOR 16197d3053fbSTimur Tabi CONFIG_VGA_AS_SINGLE_DEVICE 16207d3053fbSTimur Tabi CONFIG_VIDEO_LOGO 16217d3053fbSTimur Tabi CONFIG_VIDEO_BMP_LOGO 16227d3053fbSTimur Tabi 1623ba8e76bdSTimur Tabi The DIU driver will look for the 'video-mode' environment 1624ba8e76bdSTimur Tabi variable, and if defined, enable the DIU as a console during 1625ba8e76bdSTimur Tabi boot. See the documentation file README.video for a 1626ba8e76bdSTimur Tabi description of this variable. 16277d3053fbSTimur Tabi 1628058d59b0SSimon Glass CONFIG_VIDEO_VGA 1629058d59b0SSimon Glass 1630058d59b0SSimon Glass Enable the VGA video / BIOS for x86. The alternative if you 1631058d59b0SSimon Glass are using coreboot is to use the coreboot frame buffer 1632058d59b0SSimon Glass driver. 1633058d59b0SSimon Glass 1634058d59b0SSimon Glass 1635682011ffSwdenk- Keyboard Support: 1636682011ffSwdenk CONFIG_KEYBOARD 1637682011ffSwdenk 1638682011ffSwdenk Define this to enable a custom keyboard support. 1639682011ffSwdenk This simply calls drv_keyboard_init() which must be 1640682011ffSwdenk defined in your board-specific files. 1641682011ffSwdenk The only board using this so far is RBC823. 1642a6c7ad2fSwdenk 1643c609719bSwdenk- LCD Support: CONFIG_LCD 1644c609719bSwdenk 1645c609719bSwdenk Define this to enable LCD support (for output to LCD 1646c609719bSwdenk display); also select one of the supported displays 1647c609719bSwdenk by defining one of these: 1648c609719bSwdenk 164939cf4804SStelian Pop CONFIG_ATMEL_LCD: 165039cf4804SStelian Pop 165139cf4804SStelian Pop HITACHI TX09D70VM1CCA, 3.5", 240x320. 165239cf4804SStelian Pop 1653fd3103bbSwdenk CONFIG_NEC_NL6448AC33: 1654c609719bSwdenk 1655fd3103bbSwdenk NEC NL6448AC33-18. Active, color, single scan. 1656c609719bSwdenk 1657fd3103bbSwdenk CONFIG_NEC_NL6448BC20 1658c609719bSwdenk 1659fd3103bbSwdenk NEC NL6448BC20-08. 6.5", 640x480. 1660fd3103bbSwdenk Active, color, single scan. 1661fd3103bbSwdenk 1662fd3103bbSwdenk CONFIG_NEC_NL6448BC33_54 1663fd3103bbSwdenk 1664fd3103bbSwdenk NEC NL6448BC33-54. 10.4", 640x480. 1665c609719bSwdenk Active, color, single scan. 1666c609719bSwdenk 1667c609719bSwdenk CONFIG_SHARP_16x9 1668c609719bSwdenk 1669c609719bSwdenk Sharp 320x240. Active, color, single scan. 1670c609719bSwdenk It isn't 16x9, and I am not sure what it is. 1671c609719bSwdenk 1672c609719bSwdenk CONFIG_SHARP_LQ64D341 1673c609719bSwdenk 1674c609719bSwdenk Sharp LQ64D341 display, 640x480. 1675c609719bSwdenk Active, color, single scan. 1676c609719bSwdenk 1677c609719bSwdenk CONFIG_HLD1045 1678c609719bSwdenk 1679c609719bSwdenk HLD1045 display, 640x480. 1680c609719bSwdenk Active, color, single scan. 1681c609719bSwdenk 1682c609719bSwdenk CONFIG_OPTREX_BW 1683c609719bSwdenk 1684c609719bSwdenk Optrex CBL50840-2 NF-FW 99 22 M5 1685c609719bSwdenk or 1686c609719bSwdenk Hitachi LMG6912RPFC-00T 1687c609719bSwdenk or 1688c609719bSwdenk Hitachi SP14Q002 1689c609719bSwdenk 1690c609719bSwdenk 320x240. Black & white. 1691c609719bSwdenk 1692c609719bSwdenk Normally display is black on white background; define 16936d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_WHITE_ON_BLACK to get it inverted. 1694c609719bSwdenk 1695676d319eSSimon Glass CONFIG_LCD_ALIGNMENT 1696676d319eSSimon Glass 1697676d319eSSimon Glass Normally the LCD is page-aligned (tyically 4KB). If this is 1698676d319eSSimon Glass defined then the LCD will be aligned to this value instead. 1699676d319eSSimon Glass For ARM it is sometimes useful to use MMU_SECTION_SIZE 1700676d319eSSimon Glass here, since it is cheaper to change data cache settings on 1701676d319eSSimon Glass a per-section basis. 1702676d319eSSimon Glass 17030d89efefSSimon Glass CONFIG_CONSOLE_SCROLL_LINES 17040d89efefSSimon Glass 17050d89efefSSimon Glass When the console need to be scrolled, this is the number of 17060d89efefSSimon Glass lines to scroll by. It defaults to 1. Increasing this makes 17070d89efefSSimon Glass the console jump but can help speed up operation when scrolling 17080d89efefSSimon Glass is slow. 1709676d319eSSimon Glass 171045d7f525STom Wai-Hong Tam CONFIG_LCD_BMP_RLE8 171145d7f525STom Wai-Hong Tam 171245d7f525STom Wai-Hong Tam Support drawing of RLE8-compressed bitmaps on the LCD. 171345d7f525STom Wai-Hong Tam 1714735987c5STom Wai-Hong Tam CONFIG_I2C_EDID 1715735987c5STom Wai-Hong Tam 1716735987c5STom Wai-Hong Tam Enables an 'i2c edid' command which can read EDID 1717735987c5STom Wai-Hong Tam information over I2C from an attached LCD display. 1718735987c5STom Wai-Hong Tam 17197152b1d0Swdenk- Splash Screen Support: CONFIG_SPLASH_SCREEN 1720d791b1dcSwdenk 1721d791b1dcSwdenk If this option is set, the environment is checked for 1722d791b1dcSwdenk a variable "splashimage". If found, the usual display 1723d791b1dcSwdenk of logo, copyright and system information on the LCD 1724e94d2cd9Swdenk is suppressed and the BMP image at the address 1725d791b1dcSwdenk specified in "splashimage" is loaded instead. The 1726d791b1dcSwdenk console is redirected to the "nulldev", too. This 1727d791b1dcSwdenk allows for a "silent" boot where a splash screen is 1728d791b1dcSwdenk loaded very quickly after power-on. 1729d791b1dcSwdenk 1730c0880485SNikita Kiryanov CONFIG_SPLASHIMAGE_GUARD 1731c0880485SNikita Kiryanov 1732c0880485SNikita Kiryanov If this option is set, then U-Boot will prevent the environment 1733c0880485SNikita Kiryanov variable "splashimage" from being set to a problematic address 1734c0880485SNikita Kiryanov (see README.displaying-bmps and README.arm-unaligned-accesses). 1735c0880485SNikita Kiryanov This option is useful for targets where, due to alignment 1736c0880485SNikita Kiryanov restrictions, an improperly aligned BMP image will cause a data 1737c0880485SNikita Kiryanov abort. If you think you will not have problems with unaligned 1738c0880485SNikita Kiryanov accesses (for example because your toolchain prevents them) 1739c0880485SNikita Kiryanov there is no need to set this option. 1740c0880485SNikita Kiryanov 17411ca298ceSMatthias Weisser CONFIG_SPLASH_SCREEN_ALIGN 17421ca298ceSMatthias Weisser 17431ca298ceSMatthias Weisser If this option is set the splash image can be freely positioned 17441ca298ceSMatthias Weisser on the screen. Environment variable "splashpos" specifies the 17451ca298ceSMatthias Weisser position as "x,y". If a positive number is given it is used as 17461ca298ceSMatthias Weisser number of pixel from left/top. If a negative number is given it 17471ca298ceSMatthias Weisser is used as number of pixel from right/bottom. You can also 17481ca298ceSMatthias Weisser specify 'm' for centering the image. 17491ca298ceSMatthias Weisser 17501ca298ceSMatthias Weisser Example: 17511ca298ceSMatthias Weisser setenv splashpos m,m 17521ca298ceSMatthias Weisser => image at center of screen 17531ca298ceSMatthias Weisser 17541ca298ceSMatthias Weisser setenv splashpos 30,20 17551ca298ceSMatthias Weisser => image at x = 30 and y = 20 17561ca298ceSMatthias Weisser 17571ca298ceSMatthias Weisser setenv splashpos -10,m 17581ca298ceSMatthias Weisser => vertically centered image 17591ca298ceSMatthias Weisser at x = dspWidth - bmpWidth - 9 17601ca298ceSMatthias Weisser 176198f4a3dfSStefan Roese- Gzip compressed BMP image support: CONFIG_VIDEO_BMP_GZIP 176298f4a3dfSStefan Roese 176398f4a3dfSStefan Roese If this option is set, additionally to standard BMP 176498f4a3dfSStefan Roese images, gzipped BMP images can be displayed via the 176598f4a3dfSStefan Roese splashscreen support or the bmp command. 176698f4a3dfSStefan Roese 1767d5011762SAnatolij Gustschin- Run length encoded BMP image (RLE8) support: CONFIG_VIDEO_BMP_RLE8 1768d5011762SAnatolij Gustschin 1769d5011762SAnatolij Gustschin If this option is set, 8-bit RLE compressed BMP images 1770d5011762SAnatolij Gustschin can be displayed via the splashscreen support or the 1771d5011762SAnatolij Gustschin bmp command. 1772d5011762SAnatolij Gustschin 1773f2b96dfbSLei Wen- Do compresssing for memory range: 1774f2b96dfbSLei Wen CONFIG_CMD_ZIP 1775f2b96dfbSLei Wen 1776f2b96dfbSLei Wen If this option is set, it would use zlib deflate method 1777f2b96dfbSLei Wen to compress the specified memory at its best effort. 1778f2b96dfbSLei Wen 1779c29fdfc1Swdenk- Compression support: 17808ef70478SKees Cook CONFIG_GZIP 17818ef70478SKees Cook 17828ef70478SKees Cook Enabled by default to support gzip compressed images. 17838ef70478SKees Cook 1784c29fdfc1Swdenk CONFIG_BZIP2 1785c29fdfc1Swdenk 1786c29fdfc1Swdenk If this option is set, support for bzip2 compressed 1787c29fdfc1Swdenk images is included. If not, only uncompressed and gzip 1788c29fdfc1Swdenk compressed images are supported. 1789c29fdfc1Swdenk 1790c29fdfc1Swdenk NOTE: the bzip2 algorithm requires a lot of RAM, so 17916d0f6bcfSJean-Christophe PLAGNIOL-VILLARD the malloc area (as defined by CONFIG_SYS_MALLOC_LEN) should 1792c29fdfc1Swdenk be at least 4MB. 1793d791b1dcSwdenk 1794fc9c1727SLuigi 'Comio' Mantellini CONFIG_LZMA 1795fc9c1727SLuigi 'Comio' Mantellini 1796fc9c1727SLuigi 'Comio' Mantellini If this option is set, support for lzma compressed 1797fc9c1727SLuigi 'Comio' Mantellini images is included. 1798fc9c1727SLuigi 'Comio' Mantellini 1799fc9c1727SLuigi 'Comio' Mantellini Note: The LZMA algorithm adds between 2 and 4KB of code and it 1800fc9c1727SLuigi 'Comio' Mantellini requires an amount of dynamic memory that is given by the 1801fc9c1727SLuigi 'Comio' Mantellini formula: 1802fc9c1727SLuigi 'Comio' Mantellini 1803fc9c1727SLuigi 'Comio' Mantellini (1846 + 768 << (lc + lp)) * sizeof(uint16) 1804fc9c1727SLuigi 'Comio' Mantellini 1805fc9c1727SLuigi 'Comio' Mantellini Where lc and lp stand for, respectively, Literal context bits 1806fc9c1727SLuigi 'Comio' Mantellini and Literal pos bits. 1807fc9c1727SLuigi 'Comio' Mantellini 1808fc9c1727SLuigi 'Comio' Mantellini This value is upper-bounded by 14MB in the worst case. Anyway, 1809fc9c1727SLuigi 'Comio' Mantellini for a ~4MB large kernel image, we have lc=3 and lp=0 for a 1810fc9c1727SLuigi 'Comio' Mantellini total amount of (1846 + 768 << (3 + 0)) * 2 = ~41KB... that is 1811fc9c1727SLuigi 'Comio' Mantellini a very small buffer. 1812fc9c1727SLuigi 'Comio' Mantellini 1813fc9c1727SLuigi 'Comio' Mantellini Use the lzmainfo tool to determinate the lc and lp values and 1814fc9c1727SLuigi 'Comio' Mantellini then calculate the amount of needed dynamic memory (ensuring 18156d0f6bcfSJean-Christophe PLAGNIOL-VILLARD the appropriate CONFIG_SYS_MALLOC_LEN value). 1816fc9c1727SLuigi 'Comio' Mantellini 18178ef70478SKees Cook CONFIG_LZO 18188ef70478SKees Cook 18198ef70478SKees Cook If this option is set, support for LZO compressed images 18208ef70478SKees Cook is included. 18218ef70478SKees Cook 182217ea1177Swdenk- MII/PHY support: 182317ea1177Swdenk CONFIG_PHY_ADDR 182417ea1177Swdenk 182517ea1177Swdenk The address of PHY on MII bus. 182617ea1177Swdenk 182717ea1177Swdenk CONFIG_PHY_CLOCK_FREQ (ppc4xx) 182817ea1177Swdenk 182917ea1177Swdenk The clock frequency of the MII bus 183017ea1177Swdenk 183117ea1177Swdenk CONFIG_PHY_GIGE 183217ea1177Swdenk 183317ea1177Swdenk If this option is set, support for speed/duplex 183411ccc33fSMarcel Ziswiler detection of gigabit PHY is included. 183517ea1177Swdenk 183617ea1177Swdenk CONFIG_PHY_RESET_DELAY 183717ea1177Swdenk 183817ea1177Swdenk Some PHY like Intel LXT971A need extra delay after 183917ea1177Swdenk reset before any MII register access is possible. 184017ea1177Swdenk For such PHY, set this option to the usec delay 184117ea1177Swdenk required. (minimum 300usec for LXT971A) 184217ea1177Swdenk 184317ea1177Swdenk CONFIG_PHY_CMD_DELAY (ppc4xx) 184417ea1177Swdenk 184517ea1177Swdenk Some PHY like Intel LXT971A need extra delay after 184617ea1177Swdenk command issued before MII status register can be read 184717ea1177Swdenk 1848c609719bSwdenk- Ethernet address: 1849c609719bSwdenk CONFIG_ETHADDR 1850c68a05feSrichardretanubun CONFIG_ETH1ADDR 1851c609719bSwdenk CONFIG_ETH2ADDR 1852c609719bSwdenk CONFIG_ETH3ADDR 1853c68a05feSrichardretanubun CONFIG_ETH4ADDR 1854c68a05feSrichardretanubun CONFIG_ETH5ADDR 1855c609719bSwdenk 185611ccc33fSMarcel Ziswiler Define a default value for Ethernet address to use 185711ccc33fSMarcel Ziswiler for the respective Ethernet interface, in case this 1858c609719bSwdenk is not determined automatically. 1859c609719bSwdenk 1860c609719bSwdenk- IP address: 1861c609719bSwdenk CONFIG_IPADDR 1862c609719bSwdenk 1863c609719bSwdenk Define a default value for the IP address to use for 186411ccc33fSMarcel Ziswiler the default Ethernet interface, in case this is not 1865c609719bSwdenk determined through e.g. bootp. 18661ebcd654SWolfgang Denk (Environment variable "ipaddr") 1867c609719bSwdenk 1868c609719bSwdenk- Server IP address: 1869c609719bSwdenk CONFIG_SERVERIP 1870c609719bSwdenk 1871c609719bSwdenk Defines a default value for the IP address of a TFTP 1872c609719bSwdenk server to contact when using the "tftboot" command. 18731ebcd654SWolfgang Denk (Environment variable "serverip") 1874c609719bSwdenk 187597cfe861SRobin Getz CONFIG_KEEP_SERVERADDR 187697cfe861SRobin Getz 187797cfe861SRobin Getz Keeps the server's MAC address, in the env 'serveraddr' 187897cfe861SRobin Getz for passing to bootargs (like Linux's netconsole option) 187997cfe861SRobin Getz 18801ebcd654SWolfgang Denk- Gateway IP address: 18811ebcd654SWolfgang Denk CONFIG_GATEWAYIP 18821ebcd654SWolfgang Denk 18831ebcd654SWolfgang Denk Defines a default value for the IP address of the 18841ebcd654SWolfgang Denk default router where packets to other networks are 18851ebcd654SWolfgang Denk sent to. 18861ebcd654SWolfgang Denk (Environment variable "gatewayip") 18871ebcd654SWolfgang Denk 18881ebcd654SWolfgang Denk- Subnet mask: 18891ebcd654SWolfgang Denk CONFIG_NETMASK 18901ebcd654SWolfgang Denk 18911ebcd654SWolfgang Denk Defines a default value for the subnet mask (or 18921ebcd654SWolfgang Denk routing prefix) which is used to determine if an IP 18931ebcd654SWolfgang Denk address belongs to the local subnet or needs to be 18941ebcd654SWolfgang Denk forwarded through a router. 18951ebcd654SWolfgang Denk (Environment variable "netmask") 18961ebcd654SWolfgang Denk 189753a5c424SDavid Updegraff- Multicast TFTP Mode: 189853a5c424SDavid Updegraff CONFIG_MCAST_TFTP 189953a5c424SDavid Updegraff 190053a5c424SDavid Updegraff Defines whether you want to support multicast TFTP as per 190153a5c424SDavid Updegraff rfc-2090; for example to work with atftp. Lets lots of targets 190211ccc33fSMarcel Ziswiler tftp down the same boot image concurrently. Note: the Ethernet 190353a5c424SDavid Updegraff driver in use must provide a function: mcast() to join/leave a 190453a5c424SDavid Updegraff multicast group. 190553a5c424SDavid Updegraff 1906c609719bSwdenk- BOOTP Recovery Mode: 1907c609719bSwdenk CONFIG_BOOTP_RANDOM_DELAY 1908c609719bSwdenk 1909c609719bSwdenk If you have many targets in a network that try to 1910c609719bSwdenk boot using BOOTP, you may want to avoid that all 1911c609719bSwdenk systems send out BOOTP requests at precisely the same 1912c609719bSwdenk moment (which would happen for instance at recovery 1913c609719bSwdenk from a power failure, when all systems will try to 1914c609719bSwdenk boot, thus flooding the BOOTP server. Defining 1915c609719bSwdenk CONFIG_BOOTP_RANDOM_DELAY causes a random delay to be 1916c609719bSwdenk inserted before sending out BOOTP requests. The 19176c33c785SWolfgang Denk following delays are inserted then: 1918c609719bSwdenk 1919c609719bSwdenk 1st BOOTP request: delay 0 ... 1 sec 1920c609719bSwdenk 2nd BOOTP request: delay 0 ... 2 sec 1921c609719bSwdenk 3rd BOOTP request: delay 0 ... 4 sec 1922c609719bSwdenk 4th and following 1923c609719bSwdenk BOOTP requests: delay 0 ... 8 sec 1924c609719bSwdenk 1925fe389a82Sstroese- DHCP Advanced Options: 19261fe80d79SJon Loeliger You can fine tune the DHCP functionality by defining 19271fe80d79SJon Loeliger CONFIG_BOOTP_* symbols: 1928fe389a82Sstroese 19291fe80d79SJon Loeliger CONFIG_BOOTP_SUBNETMASK 19301fe80d79SJon Loeliger CONFIG_BOOTP_GATEWAY 19311fe80d79SJon Loeliger CONFIG_BOOTP_HOSTNAME 19321fe80d79SJon Loeliger CONFIG_BOOTP_NISDOMAIN 19331fe80d79SJon Loeliger CONFIG_BOOTP_BOOTPATH 19341fe80d79SJon Loeliger CONFIG_BOOTP_BOOTFILESIZE 19351fe80d79SJon Loeliger CONFIG_BOOTP_DNS 19361fe80d79SJon Loeliger CONFIG_BOOTP_DNS2 19371fe80d79SJon Loeliger CONFIG_BOOTP_SEND_HOSTNAME 19381fe80d79SJon Loeliger CONFIG_BOOTP_NTPSERVER 19391fe80d79SJon Loeliger CONFIG_BOOTP_TIMEOFFSET 19401fe80d79SJon Loeliger CONFIG_BOOTP_VENDOREX 19412c00e099SJoe Hershberger CONFIG_BOOTP_MAY_FAIL 1942fe389a82Sstroese 19435d110f0aSWilson Callan CONFIG_BOOTP_SERVERIP - TFTP server will be the serverip 19445d110f0aSWilson Callan environment variable, not the BOOTP server. 1945fe389a82Sstroese 19462c00e099SJoe Hershberger CONFIG_BOOTP_MAY_FAIL - If the DHCP server is not found 19472c00e099SJoe Hershberger after the configured retry count, the call will fail 19482c00e099SJoe Hershberger instead of starting over. This can be used to fail over 19492c00e099SJoe Hershberger to Link-local IP address configuration if the DHCP server 19502c00e099SJoe Hershberger is not available. 19512c00e099SJoe Hershberger 1952fe389a82Sstroese CONFIG_BOOTP_DNS2 - If a DHCP client requests the DNS 1953fe389a82Sstroese serverip from a DHCP server, it is possible that more 1954fe389a82Sstroese than one DNS serverip is offered to the client. 1955fe389a82Sstroese If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS 1956fe389a82Sstroese serverip will be stored in the additional environment 1957fe389a82Sstroese variable "dnsip2". The first DNS serverip is always 1958fe389a82Sstroese stored in the variable "dnsip", when CONFIG_BOOTP_DNS 19591fe80d79SJon Loeliger is defined. 1960fe389a82Sstroese 1961fe389a82Sstroese CONFIG_BOOTP_SEND_HOSTNAME - Some DHCP servers are capable 1962fe389a82Sstroese to do a dynamic update of a DNS server. To do this, they 1963fe389a82Sstroese need the hostname of the DHCP requester. 19645d110f0aSWilson Callan If CONFIG_BOOTP_SEND_HOSTNAME is defined, the content 19651fe80d79SJon Loeliger of the "hostname" environment variable is passed as 19661fe80d79SJon Loeliger option 12 to the DHCP server. 1967fe389a82Sstroese 1968d9a2f416SAras Vaichas CONFIG_BOOTP_DHCP_REQUEST_DELAY 1969d9a2f416SAras Vaichas 1970d9a2f416SAras Vaichas A 32bit value in microseconds for a delay between 1971d9a2f416SAras Vaichas receiving a "DHCP Offer" and sending the "DHCP Request". 1972d9a2f416SAras Vaichas This fixes a problem with certain DHCP servers that don't 1973d9a2f416SAras Vaichas respond 100% of the time to a "DHCP request". E.g. On an 1974d9a2f416SAras Vaichas AT91RM9200 processor running at 180MHz, this delay needed 1975d9a2f416SAras Vaichas to be *at least* 15,000 usec before a Windows Server 2003 1976d9a2f416SAras Vaichas DHCP server would reply 100% of the time. I recommend at 1977d9a2f416SAras Vaichas least 50,000 usec to be safe. The alternative is to hope 1978d9a2f416SAras Vaichas that one of the retries will be successful but note that 1979d9a2f416SAras Vaichas the DHCP timeout and retry process takes a longer than 1980d9a2f416SAras Vaichas this delay. 1981d9a2f416SAras Vaichas 1982d22c338eSJoe Hershberger - Link-local IP address negotiation: 1983d22c338eSJoe Hershberger Negotiate with other link-local clients on the local network 1984d22c338eSJoe Hershberger for an address that doesn't require explicit configuration. 1985d22c338eSJoe Hershberger This is especially useful if a DHCP server cannot be guaranteed 1986d22c338eSJoe Hershberger to exist in all environments that the device must operate. 1987d22c338eSJoe Hershberger 1988d22c338eSJoe Hershberger See doc/README.link-local for more information. 1989d22c338eSJoe Hershberger 1990a3d991bdSwdenk - CDP Options: 1991a3d991bdSwdenk CONFIG_CDP_DEVICE_ID 1992a3d991bdSwdenk 1993a3d991bdSwdenk The device id used in CDP trigger frames. 1994a3d991bdSwdenk 1995a3d991bdSwdenk CONFIG_CDP_DEVICE_ID_PREFIX 1996a3d991bdSwdenk 1997a3d991bdSwdenk A two character string which is prefixed to the MAC address 1998a3d991bdSwdenk of the device. 1999a3d991bdSwdenk 2000a3d991bdSwdenk CONFIG_CDP_PORT_ID 2001a3d991bdSwdenk 2002a3d991bdSwdenk A printf format string which contains the ascii name of 2003a3d991bdSwdenk the port. Normally is set to "eth%d" which sets 200411ccc33fSMarcel Ziswiler eth0 for the first Ethernet, eth1 for the second etc. 2005a3d991bdSwdenk 2006a3d991bdSwdenk CONFIG_CDP_CAPABILITIES 2007a3d991bdSwdenk 2008a3d991bdSwdenk A 32bit integer which indicates the device capabilities; 2009a3d991bdSwdenk 0x00000010 for a normal host which does not forwards. 2010a3d991bdSwdenk 2011a3d991bdSwdenk CONFIG_CDP_VERSION 2012a3d991bdSwdenk 2013a3d991bdSwdenk An ascii string containing the version of the software. 2014a3d991bdSwdenk 2015a3d991bdSwdenk CONFIG_CDP_PLATFORM 2016a3d991bdSwdenk 2017a3d991bdSwdenk An ascii string containing the name of the platform. 2018a3d991bdSwdenk 2019a3d991bdSwdenk CONFIG_CDP_TRIGGER 2020a3d991bdSwdenk 2021a3d991bdSwdenk A 32bit integer sent on the trigger. 2022a3d991bdSwdenk 2023a3d991bdSwdenk CONFIG_CDP_POWER_CONSUMPTION 2024a3d991bdSwdenk 2025a3d991bdSwdenk A 16bit integer containing the power consumption of the 2026a3d991bdSwdenk device in .1 of milliwatts. 2027a3d991bdSwdenk 2028a3d991bdSwdenk CONFIG_CDP_APPLIANCE_VLAN_TYPE 2029a3d991bdSwdenk 2030a3d991bdSwdenk A byte containing the id of the VLAN. 2031a3d991bdSwdenk 2032c609719bSwdenk- Status LED: CONFIG_STATUS_LED 2033c609719bSwdenk 2034c609719bSwdenk Several configurations allow to display the current 2035c609719bSwdenk status using a LED. For instance, the LED will blink 2036c609719bSwdenk fast while running U-Boot code, stop blinking as 2037c609719bSwdenk soon as a reply to a BOOTP request was received, and 2038c609719bSwdenk start blinking slow once the Linux kernel is running 2039c609719bSwdenk (supported by a status LED driver in the Linux 2040c609719bSwdenk kernel). Defining CONFIG_STATUS_LED enables this 2041c609719bSwdenk feature in U-Boot. 2042c609719bSwdenk 20431df7bbbaSIgor Grinberg Additional options: 20441df7bbbaSIgor Grinberg 20451df7bbbaSIgor Grinberg CONFIG_GPIO_LED 20461df7bbbaSIgor Grinberg The status LED can be connected to a GPIO pin. 20471df7bbbaSIgor Grinberg In such cases, the gpio_led driver can be used as a 20481df7bbbaSIgor Grinberg status LED backend implementation. Define CONFIG_GPIO_LED 20491df7bbbaSIgor Grinberg to include the gpio_led driver in the U-Boot binary. 20501df7bbbaSIgor Grinberg 20519dfdcdfeSIgor Grinberg CONFIG_GPIO_LED_INVERTED_TABLE 20529dfdcdfeSIgor Grinberg Some GPIO connected LEDs may have inverted polarity in which 20539dfdcdfeSIgor Grinberg case the GPIO high value corresponds to LED off state and 20549dfdcdfeSIgor Grinberg GPIO low value corresponds to LED on state. 20559dfdcdfeSIgor Grinberg In such cases CONFIG_GPIO_LED_INVERTED_TABLE may be defined 20569dfdcdfeSIgor Grinberg with a list of GPIO LEDs that have inverted polarity. 20579dfdcdfeSIgor Grinberg 2058c609719bSwdenk- CAN Support: CONFIG_CAN_DRIVER 2059c609719bSwdenk 2060c609719bSwdenk Defining CONFIG_CAN_DRIVER enables CAN driver support 2061c609719bSwdenk on those systems that support this (optional) 2062c609719bSwdenk feature, like the TQM8xxL modules. 2063c609719bSwdenk 20643f4978c7SHeiko Schocher- I2C Support: CONFIG_SYS_I2C 2065c609719bSwdenk 20663f4978c7SHeiko Schocher This enable the NEW i2c subsystem, and will allow you to use 20673f4978c7SHeiko Schocher i2c commands at the u-boot command line (as long as you set 20683f4978c7SHeiko Schocher CONFIG_CMD_I2C in CONFIG_COMMANDS) and communicate with i2c 20693f4978c7SHeiko Schocher based realtime clock chips or other i2c devices. See 20703f4978c7SHeiko Schocher common/cmd_i2c.c for a description of the command line 20713f4978c7SHeiko Schocher interface. 20723f4978c7SHeiko Schocher 20733f4978c7SHeiko Schocher ported i2c driver to the new framework: 2074ea818dbbSHeiko Schocher - drivers/i2c/soft_i2c.c: 2075ea818dbbSHeiko Schocher - activate first bus with CONFIG_SYS_I2C_SOFT define 2076ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED and CONFIG_SYS_I2C_SOFT_SLAVE 2077ea818dbbSHeiko Schocher for defining speed and slave address 2078ea818dbbSHeiko Schocher - activate second bus with I2C_SOFT_DECLARATIONS2 define 2079ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_2 and CONFIG_SYS_I2C_SOFT_SLAVE_2 2080ea818dbbSHeiko Schocher for defining speed and slave address 2081ea818dbbSHeiko Schocher - activate third bus with I2C_SOFT_DECLARATIONS3 define 2082ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_3 and CONFIG_SYS_I2C_SOFT_SLAVE_3 2083ea818dbbSHeiko Schocher for defining speed and slave address 2084ea818dbbSHeiko Schocher - activate fourth bus with I2C_SOFT_DECLARATIONS4 define 2085ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_4 and CONFIG_SYS_I2C_SOFT_SLAVE_4 2086ea818dbbSHeiko Schocher for defining speed and slave address 20873f4978c7SHeiko Schocher 208800f792e0SHeiko Schocher - drivers/i2c/fsl_i2c.c: 208900f792e0SHeiko Schocher - activate i2c driver with CONFIG_SYS_I2C_FSL 209000f792e0SHeiko Schocher define CONFIG_SYS_FSL_I2C_OFFSET for setting the register 209100f792e0SHeiko Schocher offset CONFIG_SYS_FSL_I2C_SPEED for the i2c speed and 209200f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C_SLAVE for the slave addr of the first 209300f792e0SHeiko Schocher bus. 209400f792e0SHeiko Schocher - If your board supports a second fsl i2c bus, define 209500f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_OFFSET for the register offset 209600f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_SPEED for the speed and 209700f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_SLAVE for the slave address of the 209800f792e0SHeiko Schocher second bus. 209900f792e0SHeiko Schocher 21001f2ba722SSimon Glass - drivers/i2c/tegra_i2c.c: 21011f2ba722SSimon Glass - activate this driver with CONFIG_SYS_I2C_TEGRA 21021f2ba722SSimon Glass - This driver adds 4 i2c buses with a fix speed from 21031f2ba722SSimon Glass 100000 and the slave addr 0! 21041f2ba722SSimon Glass 2105880540deSDirk Eibach - drivers/i2c/ppc4xx_i2c.c 2106880540deSDirk Eibach - activate this driver with CONFIG_SYS_I2C_PPC4XX 2107880540deSDirk Eibach - CONFIG_SYS_I2C_PPC4XX_CH0 activate hardware channel 0 2108880540deSDirk Eibach - CONFIG_SYS_I2C_PPC4XX_CH1 activate hardware channel 1 2109880540deSDirk Eibach 2110fac96408Strem - drivers/i2c/i2c_mxc.c 2111fac96408Strem - activate this driver with CONFIG_SYS_I2C_MXC 2112fac96408Strem - define speed for bus 1 with CONFIG_SYS_MXC_I2C1_SPEED 2113fac96408Strem - define slave for bus 1 with CONFIG_SYS_MXC_I2C1_SLAVE 2114fac96408Strem - define speed for bus 2 with CONFIG_SYS_MXC_I2C2_SPEED 2115fac96408Strem - define slave for bus 2 with CONFIG_SYS_MXC_I2C2_SLAVE 2116fac96408Strem - define speed for bus 3 with CONFIG_SYS_MXC_I2C3_SPEED 2117fac96408Strem - define slave for bus 3 with CONFIG_SYS_MXC_I2C3_SLAVE 2118fac96408Strem If thoses defines are not set, default value is 100000 2119fac96408Strem for speed, and 0 for slave. 2120fac96408Strem 21211086bfa9SNobuhiro Iwamatsu - drivers/i2c/rcar_i2c.c: 21221086bfa9SNobuhiro Iwamatsu - activate this driver with CONFIG_SYS_I2C_RCAR 21231086bfa9SNobuhiro Iwamatsu - This driver adds 4 i2c buses 21241086bfa9SNobuhiro Iwamatsu 21251086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C0_BASE for setting the register channel 0 21261086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C0_SPEED for for the speed channel 0 21271086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C1_BASE for setting the register channel 1 21281086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C1_SPEED for for the speed channel 1 21291086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C2_BASE for setting the register channel 2 21301086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C2_SPEED for for the speed channel 2 21311086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C3_BASE for setting the register channel 3 21321086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C3_SPEED for for the speed channel 3 21331086bfa9SNobuhiro Iwamatsu - CONFIF_SYS_RCAR_I2C_NUM_CONTROLLERS for number of i2c buses 21341086bfa9SNobuhiro Iwamatsu 21352035d77dSNobuhiro Iwamatsu - drivers/i2c/sh_i2c.c: 21362035d77dSNobuhiro Iwamatsu - activate this driver with CONFIG_SYS_I2C_SH 21372035d77dSNobuhiro Iwamatsu - This driver adds from 2 to 5 i2c buses 21382035d77dSNobuhiro Iwamatsu 21392035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE0 for setting the register channel 0 21402035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED0 for for the speed channel 0 21412035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE1 for setting the register channel 1 21422035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED1 for for the speed channel 1 21432035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE2 for setting the register channel 2 21442035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED2 for for the speed channel 2 21452035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE3 for setting the register channel 3 21462035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED3 for for the speed channel 3 21472035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE4 for setting the register channel 4 21482035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED4 for for the speed channel 4 21492035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE5 for setting the register channel 5 21502035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED5 for for the speed channel 5 21512035d77dSNobuhiro Iwamatsu - CONFIF_SYS_I2C_SH_NUM_CONTROLLERS for nummber of i2c buses 21522035d77dSNobuhiro Iwamatsu 21536789e84eSHeiko Schocher - drivers/i2c/omap24xx_i2c.c 21546789e84eSHeiko Schocher - activate this driver with CONFIG_SYS_I2C_OMAP24XX 21556789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED speed channel 0 21566789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE slave addr channel 0 21576789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED1 speed channel 1 21586789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE1 slave addr channel 1 21596789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED2 speed channel 2 21606789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE2 slave addr channel 2 21616789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED3 speed channel 3 21626789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE3 slave addr channel 3 21636789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED4 speed channel 4 21646789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE4 slave addr channel 4 21656789e84eSHeiko Schocher 21660bdffe71SHeiko Schocher - drivers/i2c/zynq_i2c.c 21670bdffe71SHeiko Schocher - activate this driver with CONFIG_SYS_I2C_ZYNQ 21680bdffe71SHeiko Schocher - set CONFIG_SYS_I2C_ZYNQ_SPEED for speed setting 21690bdffe71SHeiko Schocher - set CONFIG_SYS_I2C_ZYNQ_SLAVE for slave addr 21700bdffe71SHeiko Schocher 2171e717fc6dSNaveen Krishna Ch - drivers/i2c/s3c24x0_i2c.c: 2172e717fc6dSNaveen Krishna Ch - activate this driver with CONFIG_SYS_I2C_S3C24X0 2173e717fc6dSNaveen Krishna Ch - This driver adds i2c buses (11 for Exynos5250, Exynos5420 2174e717fc6dSNaveen Krishna Ch 9 i2c buses for Exynos4 and 1 for S3C24X0 SoCs from Samsung) 2175e717fc6dSNaveen Krishna Ch with a fix speed from 100000 and the slave addr 0! 2176e717fc6dSNaveen Krishna Ch 21773f4978c7SHeiko Schocher additional defines: 21783f4978c7SHeiko Schocher 21793f4978c7SHeiko Schocher CONFIG_SYS_NUM_I2C_BUSES 21803f4978c7SHeiko Schocher Hold the number of i2c busses you want to use. If you 21813f4978c7SHeiko Schocher don't use/have i2c muxes on your i2c bus, this 21823f4978c7SHeiko Schocher is equal to CONFIG_SYS_NUM_I2C_ADAPTERS, and you can 21833f4978c7SHeiko Schocher omit this define. 21843f4978c7SHeiko Schocher 21853f4978c7SHeiko Schocher CONFIG_SYS_I2C_DIRECT_BUS 21863f4978c7SHeiko Schocher define this, if you don't use i2c muxes on your hardware. 21873f4978c7SHeiko Schocher if CONFIG_SYS_I2C_MAX_HOPS is not defined or == 0 you can 21883f4978c7SHeiko Schocher omit this define. 21893f4978c7SHeiko Schocher 21903f4978c7SHeiko Schocher CONFIG_SYS_I2C_MAX_HOPS 21913f4978c7SHeiko Schocher define how many muxes are maximal consecutively connected 21923f4978c7SHeiko Schocher on one i2c bus. If you not use i2c muxes, omit this 21933f4978c7SHeiko Schocher define. 21943f4978c7SHeiko Schocher 21953f4978c7SHeiko Schocher CONFIG_SYS_I2C_BUSES 21963f4978c7SHeiko Schocher hold a list of busses you want to use, only used if 21973f4978c7SHeiko Schocher CONFIG_SYS_I2C_DIRECT_BUS is not defined, for example 21983f4978c7SHeiko Schocher a board with CONFIG_SYS_I2C_MAX_HOPS = 1 and 21993f4978c7SHeiko Schocher CONFIG_SYS_NUM_I2C_BUSES = 9: 22003f4978c7SHeiko Schocher 22013f4978c7SHeiko Schocher CONFIG_SYS_I2C_BUSES {{0, {I2C_NULL_HOP}}, \ 22023f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 1}}}, \ 22033f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 2}}}, \ 22043f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 3}}}, \ 22053f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 4}}}, \ 22063f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 5}}}, \ 22073f4978c7SHeiko Schocher {1, {I2C_NULL_HOP}}, \ 22083f4978c7SHeiko Schocher {1, {{I2C_MUX_PCA9544, 0x72, 1}}}, \ 22093f4978c7SHeiko Schocher {1, {{I2C_MUX_PCA9544, 0x72, 2}}}, \ 22103f4978c7SHeiko Schocher } 22113f4978c7SHeiko Schocher 22123f4978c7SHeiko Schocher which defines 22133f4978c7SHeiko Schocher bus 0 on adapter 0 without a mux 2214ea818dbbSHeiko Schocher bus 1 on adapter 0 with a PCA9547 on address 0x70 port 1 2215ea818dbbSHeiko Schocher bus 2 on adapter 0 with a PCA9547 on address 0x70 port 2 2216ea818dbbSHeiko Schocher bus 3 on adapter 0 with a PCA9547 on address 0x70 port 3 2217ea818dbbSHeiko Schocher bus 4 on adapter 0 with a PCA9547 on address 0x70 port 4 2218ea818dbbSHeiko Schocher bus 5 on adapter 0 with a PCA9547 on address 0x70 port 5 22193f4978c7SHeiko Schocher bus 6 on adapter 1 without a mux 2220ea818dbbSHeiko Schocher bus 7 on adapter 1 with a PCA9544 on address 0x72 port 1 2221ea818dbbSHeiko Schocher bus 8 on adapter 1 with a PCA9544 on address 0x72 port 2 22223f4978c7SHeiko Schocher 22233f4978c7SHeiko Schocher If you do not have i2c muxes on your board, omit this define. 22243f4978c7SHeiko Schocher 2225ea818dbbSHeiko Schocher- Legacy I2C Support: CONFIG_HARD_I2C 22263f4978c7SHeiko Schocher 22273f4978c7SHeiko Schocher NOTE: It is intended to move drivers to CONFIG_SYS_I2C which 22283f4978c7SHeiko Schocher provides the following compelling advantages: 22293f4978c7SHeiko Schocher 22303f4978c7SHeiko Schocher - more than one i2c adapter is usable 22313f4978c7SHeiko Schocher - approved multibus support 22323f4978c7SHeiko Schocher - better i2c mux support 22333f4978c7SHeiko Schocher 22343f4978c7SHeiko Schocher ** Please consider updating your I2C driver now. ** 22353f4978c7SHeiko Schocher 2236ea818dbbSHeiko Schocher These enable legacy I2C serial bus commands. Defining 2237ea818dbbSHeiko Schocher CONFIG_HARD_I2C will include the appropriate I2C driver 2238ea818dbbSHeiko Schocher for the selected CPU. 2239c609719bSwdenk 2240b37c7e5eSwdenk This will allow you to use i2c commands at the u-boot 2241602ad3b3SJon Loeliger command line (as long as you set CONFIG_CMD_I2C in 2242b37c7e5eSwdenk CONFIG_COMMANDS) and communicate with i2c based realtime 2243b37c7e5eSwdenk clock chips. See common/cmd_i2c.c for a description of the 2244c609719bSwdenk command line interface. 2245c609719bSwdenk 2246bb99ad6dSBen Warren CONFIG_HARD_I2C selects a hardware I2C controller. 2247c609719bSwdenk 2248b37c7e5eSwdenk There are several other quantities that must also be 2249ea818dbbSHeiko Schocher defined when you define CONFIG_HARD_I2C. 2250c609719bSwdenk 22516d0f6bcfSJean-Christophe PLAGNIOL-VILLARD In both cases you will need to define CONFIG_SYS_I2C_SPEED 2252b37c7e5eSwdenk to be the frequency (in Hz) at which you wish your i2c bus 22536d0f6bcfSJean-Christophe PLAGNIOL-VILLARD to run and CONFIG_SYS_I2C_SLAVE to be the address of this node (ie 225411ccc33fSMarcel Ziswiler the CPU's i2c node address). 2255c609719bSwdenk 22568d321b81SPeter Tyser Now, the u-boot i2c code for the mpc8xx 2257a47a12beSStefan Roese (arch/powerpc/cpu/mpc8xx/i2c.c) sets the CPU up as a master node 22588d321b81SPeter Tyser and so its address should therefore be cleared to 0 (See, 22598d321b81SPeter Tyser eg, MPC823e User's Manual p.16-473). So, set 22608d321b81SPeter Tyser CONFIG_SYS_I2C_SLAVE to 0. 2261b37c7e5eSwdenk 22625da71efaSEric Millbrandt CONFIG_SYS_I2C_INIT_MPC5XXX 22635da71efaSEric Millbrandt 22645da71efaSEric Millbrandt When a board is reset during an i2c bus transfer 22655da71efaSEric Millbrandt chips might think that the current transfer is still 22665da71efaSEric Millbrandt in progress. Reset the slave devices by sending start 22675da71efaSEric Millbrandt commands until the slave device responds. 22685da71efaSEric Millbrandt 2269b37c7e5eSwdenk That's all that's required for CONFIG_HARD_I2C. 2270b37c7e5eSwdenk 2271ea818dbbSHeiko Schocher If you use the software i2c interface (CONFIG_SYS_I2C_SOFT) 2272b37c7e5eSwdenk then the following macros need to be defined (examples are 2273b37c7e5eSwdenk from include/configs/lwmon.h): 2274c609719bSwdenk 2275c609719bSwdenk I2C_INIT 2276c609719bSwdenk 2277b37c7e5eSwdenk (Optional). Any commands necessary to enable the I2C 2278c609719bSwdenk controller or configure ports. 2279c609719bSwdenk 2280b37c7e5eSwdenk eg: #define I2C_INIT (immr->im_cpm.cp_pbdir |= PB_SCL) 2281b37c7e5eSwdenk 2282c609719bSwdenk I2C_PORT 2283c609719bSwdenk 2284c609719bSwdenk (Only for MPC8260 CPU). The I/O port to use (the code 2285c609719bSwdenk assumes both bits are on the same port). Valid values 2286c609719bSwdenk are 0..3 for ports A..D. 2287c609719bSwdenk 2288c609719bSwdenk I2C_ACTIVE 2289c609719bSwdenk 2290c609719bSwdenk The code necessary to make the I2C data line active 2291c609719bSwdenk (driven). If the data line is open collector, this 2292c609719bSwdenk define can be null. 2293c609719bSwdenk 2294b37c7e5eSwdenk eg: #define I2C_ACTIVE (immr->im_cpm.cp_pbdir |= PB_SDA) 2295b37c7e5eSwdenk 2296c609719bSwdenk I2C_TRISTATE 2297c609719bSwdenk 2298c609719bSwdenk The code necessary to make the I2C data line tri-stated 2299c609719bSwdenk (inactive). If the data line is open collector, this 2300c609719bSwdenk define can be null. 2301c609719bSwdenk 2302b37c7e5eSwdenk eg: #define I2C_TRISTATE (immr->im_cpm.cp_pbdir &= ~PB_SDA) 2303b37c7e5eSwdenk 2304c609719bSwdenk I2C_READ 2305c609719bSwdenk 2306472d5460SYork Sun Code that returns true if the I2C data line is high, 2307472d5460SYork Sun false if it is low. 2308c609719bSwdenk 2309b37c7e5eSwdenk eg: #define I2C_READ ((immr->im_cpm.cp_pbdat & PB_SDA) != 0) 2310b37c7e5eSwdenk 2311c609719bSwdenk I2C_SDA(bit) 2312c609719bSwdenk 2313472d5460SYork Sun If <bit> is true, sets the I2C data line high. If it 2314472d5460SYork Sun is false, it clears it (low). 2315c609719bSwdenk 2316b37c7e5eSwdenk eg: #define I2C_SDA(bit) \ 2317b37c7e5eSwdenk if(bit) immr->im_cpm.cp_pbdat |= PB_SDA; \ 2318b37c7e5eSwdenk else immr->im_cpm.cp_pbdat &= ~PB_SDA 2319b37c7e5eSwdenk 2320c609719bSwdenk I2C_SCL(bit) 2321c609719bSwdenk 2322472d5460SYork Sun If <bit> is true, sets the I2C clock line high. If it 2323472d5460SYork Sun is false, it clears it (low). 2324c609719bSwdenk 2325b37c7e5eSwdenk eg: #define I2C_SCL(bit) \ 2326b37c7e5eSwdenk if(bit) immr->im_cpm.cp_pbdat |= PB_SCL; \ 2327b37c7e5eSwdenk else immr->im_cpm.cp_pbdat &= ~PB_SCL 2328b37c7e5eSwdenk 2329c609719bSwdenk I2C_DELAY 2330c609719bSwdenk 2331c609719bSwdenk This delay is invoked four times per clock cycle so this 2332c609719bSwdenk controls the rate of data transfer. The data rate thus 2333b37c7e5eSwdenk is 1 / (I2C_DELAY * 4). Often defined to be something 2334b37c7e5eSwdenk like: 2335b37c7e5eSwdenk 2336b37c7e5eSwdenk #define I2C_DELAY udelay(2) 2337c609719bSwdenk 2338793b5726SMike Frysinger CONFIG_SOFT_I2C_GPIO_SCL / CONFIG_SOFT_I2C_GPIO_SDA 2339793b5726SMike Frysinger 2340793b5726SMike Frysinger If your arch supports the generic GPIO framework (asm/gpio.h), 2341793b5726SMike Frysinger then you may alternatively define the two GPIOs that are to be 2342793b5726SMike Frysinger used as SCL / SDA. Any of the previous I2C_xxx macros will 2343793b5726SMike Frysinger have GPIO-based defaults assigned to them as appropriate. 2344793b5726SMike Frysinger 2345793b5726SMike Frysinger You should define these to the GPIO value as given directly to 2346793b5726SMike Frysinger the generic GPIO functions. 2347793b5726SMike Frysinger 23486d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_INIT_BOARD 234947cd00faSwdenk 235047cd00faSwdenk When a board is reset during an i2c bus transfer 235147cd00faSwdenk chips might think that the current transfer is still 235247cd00faSwdenk in progress. On some boards it is possible to access 235347cd00faSwdenk the i2c SCLK line directly, either by using the 235447cd00faSwdenk processor pin as a GPIO or by having a second pin 235547cd00faSwdenk connected to the bus. If this option is defined a 235647cd00faSwdenk custom i2c_init_board() routine in boards/xxx/board.c 235747cd00faSwdenk is run early in the boot sequence. 235847cd00faSwdenk 235926a33504SRichard Retanubun CONFIG_SYS_I2C_BOARD_LATE_INIT 236026a33504SRichard Retanubun 236126a33504SRichard Retanubun An alternative to CONFIG_SYS_I2C_INIT_BOARD. If this option is 236226a33504SRichard Retanubun defined a custom i2c_board_late_init() routine in 236326a33504SRichard Retanubun boards/xxx/board.c is run AFTER the operations in i2c_init() 236426a33504SRichard Retanubun is completed. This callpoint can be used to unreset i2c bus 236526a33504SRichard Retanubun using CPU i2c controller register accesses for CPUs whose i2c 236626a33504SRichard Retanubun controller provide such a method. It is called at the end of 236726a33504SRichard Retanubun i2c_init() to allow i2c_init operations to setup the i2c bus 236826a33504SRichard Retanubun controller on the CPU (e.g. setting bus speed & slave address). 236926a33504SRichard Retanubun 237017ea1177Swdenk CONFIG_I2CFAST (PPC405GP|PPC405EP only) 237117ea1177Swdenk 237217ea1177Swdenk This option enables configuration of bi_iic_fast[] flags 237317ea1177Swdenk in u-boot bd_info structure based on u-boot environment 237417ea1177Swdenk variable "i2cfast". (see also i2cfast) 237517ea1177Swdenk 2376bb99ad6dSBen Warren CONFIG_I2C_MULTI_BUS 2377bb99ad6dSBen Warren 2378bb99ad6dSBen Warren This option allows the use of multiple I2C buses, each of which 2379bb99ad6dSBen Warren must have a controller. At any point in time, only one bus is 2380bb99ad6dSBen Warren active. To switch to a different bus, use the 'i2c dev' command. 2381bb99ad6dSBen Warren Note that bus numbering is zero-based. 2382bb99ad6dSBen Warren 23836d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_NOPROBES 2384bb99ad6dSBen Warren 2385bb99ad6dSBen Warren This option specifies a list of I2C devices that will be skipped 23860f89c54bSPeter Tyser when the 'i2c probe' command is issued. If CONFIG_I2C_MULTI_BUS 23870f89c54bSPeter Tyser is set, specify a list of bus-device pairs. Otherwise, specify 23880f89c54bSPeter Tyser a 1D array of device addresses 2389bb99ad6dSBen Warren 2390bb99ad6dSBen Warren e.g. 2391bb99ad6dSBen Warren #undef CONFIG_I2C_MULTI_BUS 23926d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_I2C_NOPROBES {0x50,0x68} 2393bb99ad6dSBen Warren 2394bb99ad6dSBen Warren will skip addresses 0x50 and 0x68 on a board with one I2C bus 2395bb99ad6dSBen Warren 2396bb99ad6dSBen Warren #define CONFIG_I2C_MULTI_BUS 23976d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_I2C_MULTI_NOPROBES {{0,0x50},{0,0x68},{1,0x54}} 2398bb99ad6dSBen Warren 2399bb99ad6dSBen Warren will skip addresses 0x50 and 0x68 on bus 0 and address 0x54 on bus 1 2400bb99ad6dSBen Warren 24016d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SPD_BUS_NUM 2402be5e6181STimur Tabi 2403be5e6181STimur Tabi If defined, then this indicates the I2C bus number for DDR SPD. 2404be5e6181STimur Tabi If not defined, then U-Boot assumes that SPD is on I2C bus 0. 2405be5e6181STimur Tabi 24066d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_RTC_BUS_NUM 24070dc018ecSStefan Roese 24080dc018ecSStefan Roese If defined, then this indicates the I2C bus number for the RTC. 24090dc018ecSStefan Roese If not defined, then U-Boot assumes that RTC is on I2C bus 0. 24100dc018ecSStefan Roese 24116d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_DTT_BUS_NUM 24120dc018ecSStefan Roese 24130dc018ecSStefan Roese If defined, then this indicates the I2C bus number for the DTT. 24140dc018ecSStefan Roese If not defined, then U-Boot assumes that DTT is on I2C bus 0. 24150dc018ecSStefan Roese 24166d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_DTT_ADDR: 24179ebbb54fSVictor Gallardo 24189ebbb54fSVictor Gallardo If defined, specifies the I2C address of the DTT device. 24199ebbb54fSVictor Gallardo If not defined, then U-Boot uses predefined value for 24209ebbb54fSVictor Gallardo specified DTT device. 24219ebbb54fSVictor Gallardo 24222ac6985aSAndrew Dyer CONFIG_SOFT_I2C_READ_REPEATED_START 24232ac6985aSAndrew Dyer 24242ac6985aSAndrew Dyer defining this will force the i2c_read() function in 24252ac6985aSAndrew Dyer the soft_i2c driver to perform an I2C repeated start 24262ac6985aSAndrew Dyer between writing the address pointer and reading the 24272ac6985aSAndrew Dyer data. If this define is omitted the default behaviour 24282ac6985aSAndrew Dyer of doing a stop-start sequence will be used. Most I2C 24292ac6985aSAndrew Dyer devices can use either method, but some require one or 24302ac6985aSAndrew Dyer the other. 2431be5e6181STimur Tabi 2432c609719bSwdenk- SPI Support: CONFIG_SPI 2433c609719bSwdenk 2434c609719bSwdenk Enables SPI driver (so far only tested with 2435c609719bSwdenk SPI EEPROM, also an instance works with Crystal A/D and 2436c609719bSwdenk D/As on the SACSng board) 2437c609719bSwdenk 24386639562eSYoshihiro Shimoda CONFIG_SH_SPI 24396639562eSYoshihiro Shimoda 24406639562eSYoshihiro Shimoda Enables the driver for SPI controller on SuperH. Currently 24416639562eSYoshihiro Shimoda only SH7757 is supported. 24426639562eSYoshihiro Shimoda 2443c609719bSwdenk CONFIG_SPI_X 2444c609719bSwdenk 2445c609719bSwdenk Enables extended (16-bit) SPI EEPROM addressing. 2446c609719bSwdenk (symmetrical to CONFIG_I2C_X) 2447c609719bSwdenk 2448c609719bSwdenk CONFIG_SOFT_SPI 2449c609719bSwdenk 2450c609719bSwdenk Enables a software (bit-bang) SPI driver rather than 2451c609719bSwdenk using hardware support. This is a general purpose 2452c609719bSwdenk driver that only requires three general I/O port pins 2453c609719bSwdenk (two outputs, one input) to function. If this is 2454c609719bSwdenk defined, the board configuration must define several 2455c609719bSwdenk SPI configuration items (port pins to use, etc). For 2456c609719bSwdenk an example, see include/configs/sacsng.h. 2457c609719bSwdenk 245804a9e118SBen Warren CONFIG_HARD_SPI 245904a9e118SBen Warren 246004a9e118SBen Warren Enables a hardware SPI driver for general-purpose reads 246104a9e118SBen Warren and writes. As with CONFIG_SOFT_SPI, the board configuration 246204a9e118SBen Warren must define a list of chip-select function pointers. 246304a9e118SBen Warren Currently supported on some MPC8xxx processors. For an 246404a9e118SBen Warren example, see include/configs/mpc8349emds.h. 246504a9e118SBen Warren 246638254f45SGuennadi Liakhovetski CONFIG_MXC_SPI 246738254f45SGuennadi Liakhovetski 246838254f45SGuennadi Liakhovetski Enables the driver for the SPI controllers on i.MX and MXC 24692e3cd1cdSFabio Estevam SoCs. Currently i.MX31/35/51 are supported. 247038254f45SGuennadi Liakhovetski 24710133502eSMatthias Fuchs- FPGA Support: CONFIG_FPGA 24720133502eSMatthias Fuchs 24730133502eSMatthias Fuchs Enables FPGA subsystem. 24740133502eSMatthias Fuchs 24750133502eSMatthias Fuchs CONFIG_FPGA_<vendor> 24760133502eSMatthias Fuchs 24770133502eSMatthias Fuchs Enables support for specific chip vendors. 24780133502eSMatthias Fuchs (ALTERA, XILINX) 24790133502eSMatthias Fuchs 24800133502eSMatthias Fuchs CONFIG_FPGA_<family> 24810133502eSMatthias Fuchs 24820133502eSMatthias Fuchs Enables support for FPGA family. 24830133502eSMatthias Fuchs (SPARTAN2, SPARTAN3, VIRTEX2, CYCLONE2, ACEX1K, ACEX) 24840133502eSMatthias Fuchs 24850133502eSMatthias Fuchs CONFIG_FPGA_COUNT 2486c609719bSwdenk 2487c609719bSwdenk Specify the number of FPGA devices to support. 2488c609719bSwdenk 24896d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_PROG_FEEDBACK 2490c609719bSwdenk 2491c609719bSwdenk Enable printing of hash marks during FPGA configuration. 2492c609719bSwdenk 24936d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_BUSY 2494c609719bSwdenk 2495c609719bSwdenk Enable checks on FPGA configuration interface busy 2496c609719bSwdenk status by the configuration function. This option 2497c609719bSwdenk will require a board or device specific function to 2498c609719bSwdenk be written. 2499c609719bSwdenk 2500c609719bSwdenk CONFIG_FPGA_DELAY 2501c609719bSwdenk 2502c609719bSwdenk If defined, a function that provides delays in the FPGA 2503c609719bSwdenk configuration driver. 2504c609719bSwdenk 25056d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_CTRLC 2506c609719bSwdenk Allow Control-C to interrupt FPGA configuration 2507c609719bSwdenk 25086d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_ERROR 2509c609719bSwdenk 2510c609719bSwdenk Check for configuration errors during FPGA bitfile 2511c609719bSwdenk loading. For example, abort during Virtex II 2512c609719bSwdenk configuration if the INIT_B line goes low (which 2513c609719bSwdenk indicated a CRC error). 2514c609719bSwdenk 25156d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_INIT 2516c609719bSwdenk 2517c609719bSwdenk Maximum time to wait for the INIT_B line to deassert 2518c609719bSwdenk after PROB_B has been deasserted during a Virtex II 2519c609719bSwdenk FPGA configuration sequence. The default time is 500 252011ccc33fSMarcel Ziswiler ms. 2521c609719bSwdenk 25226d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_BUSY 2523c609719bSwdenk 2524c609719bSwdenk Maximum time to wait for BUSY to deassert during 252511ccc33fSMarcel Ziswiler Virtex II FPGA configuration. The default is 5 ms. 2526c609719bSwdenk 25276d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_CONFIG 2528c609719bSwdenk 2529c609719bSwdenk Time to wait after FPGA configuration. The default is 253011ccc33fSMarcel Ziswiler 200 ms. 2531c609719bSwdenk 2532c609719bSwdenk- Configuration Management: 2533c609719bSwdenk CONFIG_IDENT_STRING 2534c609719bSwdenk 2535c609719bSwdenk If defined, this string will be added to the U-Boot 2536c609719bSwdenk version information (U_BOOT_VERSION) 2537c609719bSwdenk 2538c609719bSwdenk- Vendor Parameter Protection: 2539c609719bSwdenk 2540c609719bSwdenk U-Boot considers the values of the environment 2541c609719bSwdenk variables "serial#" (Board Serial Number) and 25427152b1d0Swdenk "ethaddr" (Ethernet Address) to be parameters that 2543c609719bSwdenk are set once by the board vendor / manufacturer, and 2544c609719bSwdenk protects these variables from casual modification by 2545c609719bSwdenk the user. Once set, these variables are read-only, 2546c609719bSwdenk and write or delete attempts are rejected. You can 254711ccc33fSMarcel Ziswiler change this behaviour: 2548c609719bSwdenk 2549c609719bSwdenk If CONFIG_ENV_OVERWRITE is #defined in your config 2550c609719bSwdenk file, the write protection for vendor parameters is 255147cd00faSwdenk completely disabled. Anybody can change or delete 2552c609719bSwdenk these parameters. 2553c609719bSwdenk 2554c609719bSwdenk Alternatively, if you #define _both_ CONFIG_ETHADDR 2555c609719bSwdenk _and_ CONFIG_OVERWRITE_ETHADDR_ONCE, a default 255611ccc33fSMarcel Ziswiler Ethernet address is installed in the environment, 2557c609719bSwdenk which can be changed exactly ONCE by the user. [The 2558c609719bSwdenk serial# is unaffected by this, i. e. it remains 2559c609719bSwdenk read-only.] 2560c609719bSwdenk 25612598090bSJoe Hershberger The same can be accomplished in a more flexible way 25622598090bSJoe Hershberger for any variable by configuring the type of access 25632598090bSJoe Hershberger to allow for those variables in the ".flags" variable 25642598090bSJoe Hershberger or define CONFIG_ENV_FLAGS_LIST_STATIC. 25652598090bSJoe Hershberger 2566c609719bSwdenk- Protected RAM: 2567c609719bSwdenk CONFIG_PRAM 2568c609719bSwdenk 2569c609719bSwdenk Define this variable to enable the reservation of 2570c609719bSwdenk "protected RAM", i. e. RAM which is not overwritten 2571c609719bSwdenk by U-Boot. Define CONFIG_PRAM to hold the number of 2572c609719bSwdenk kB you want to reserve for pRAM. You can overwrite 2573c609719bSwdenk this default value by defining an environment 2574c609719bSwdenk variable "pram" to the number of kB you want to 2575c609719bSwdenk reserve. Note that the board info structure will 2576c609719bSwdenk still show the full amount of RAM. If pRAM is 2577c609719bSwdenk reserved, a new environment variable "mem" will 2578c609719bSwdenk automatically be defined to hold the amount of 2579c609719bSwdenk remaining RAM in a form that can be passed as boot 2580c609719bSwdenk argument to Linux, for instance like that: 2581c609719bSwdenk 2582fe126d8bSWolfgang Denk setenv bootargs ... mem=\${mem} 2583c609719bSwdenk saveenv 2584c609719bSwdenk 2585c609719bSwdenk This way you can tell Linux not to use this memory, 2586c609719bSwdenk either, which results in a memory region that will 2587c609719bSwdenk not be affected by reboots. 2588c609719bSwdenk 2589c609719bSwdenk *WARNING* If your board configuration uses automatic 2590c609719bSwdenk detection of the RAM size, you must make sure that 2591c609719bSwdenk this memory test is non-destructive. So far, the 2592c609719bSwdenk following board configurations are known to be 2593c609719bSwdenk "pRAM-clean": 2594c609719bSwdenk 25951b0757ecSWolfgang Denk IVMS8, IVML24, SPD8xx, TQM8xxL, 25961b0757ecSWolfgang Denk HERMES, IP860, RPXlite, LWMON, 2597544d97e9SWolfgang Denk FLAGADM, TQM8260 2598c609719bSwdenk 259940fef049SGabe Black- Access to physical memory region (> 4GB) 260040fef049SGabe Black Some basic support is provided for operations on memory not 260140fef049SGabe Black normally accessible to U-Boot - e.g. some architectures 260240fef049SGabe Black support access to more than 4GB of memory on 32-bit 260340fef049SGabe Black machines using physical address extension or similar. 260440fef049SGabe Black Define CONFIG_PHYSMEM to access this basic support, which 260540fef049SGabe Black currently only supports clearing the memory. 260640fef049SGabe Black 2607c609719bSwdenk- Error Recovery: 2608c609719bSwdenk CONFIG_PANIC_HANG 2609c609719bSwdenk 2610c609719bSwdenk Define this variable to stop the system in case of a 2611c609719bSwdenk fatal error, so that you have to reset it manually. 2612c609719bSwdenk This is probably NOT a good idea for an embedded 261311ccc33fSMarcel Ziswiler system where you want the system to reboot 2614c609719bSwdenk automatically as fast as possible, but it may be 2615c609719bSwdenk useful during development since you can try to debug 2616c609719bSwdenk the conditions that lead to the situation. 2617c609719bSwdenk 2618c609719bSwdenk CONFIG_NET_RETRY_COUNT 2619c609719bSwdenk 2620c609719bSwdenk This variable defines the number of retries for 2621c609719bSwdenk network operations like ARP, RARP, TFTP, or BOOTP 2622c609719bSwdenk before giving up the operation. If not defined, a 2623c609719bSwdenk default value of 5 is used. 2624c609719bSwdenk 262540cb90eeSGuennadi Liakhovetski CONFIG_ARP_TIMEOUT 262640cb90eeSGuennadi Liakhovetski 262740cb90eeSGuennadi Liakhovetski Timeout waiting for an ARP reply in milliseconds. 262840cb90eeSGuennadi Liakhovetski 262948a3e999STetsuyuki Kobayashi CONFIG_NFS_TIMEOUT 263048a3e999STetsuyuki Kobayashi 263148a3e999STetsuyuki Kobayashi Timeout in milliseconds used in NFS protocol. 263248a3e999STetsuyuki Kobayashi If you encounter "ERROR: Cannot umount" in nfs command, 263348a3e999STetsuyuki Kobayashi try longer timeout such as 263448a3e999STetsuyuki Kobayashi #define CONFIG_NFS_TIMEOUT 10000UL 263548a3e999STetsuyuki Kobayashi 2636c609719bSwdenk- Command Interpreter: 26378078f1a5SWolfgang Denk CONFIG_AUTO_COMPLETE 263804a85b3bSwdenk 263904a85b3bSwdenk Enable auto completion of commands using TAB. 264004a85b3bSwdenk 26418078f1a5SWolfgang Denk Note that this feature has NOT been implemented yet 26428078f1a5SWolfgang Denk for the "hush" shell. 26438078f1a5SWolfgang Denk 26448078f1a5SWolfgang Denk 26456d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_HUSH_PARSER 2646c609719bSwdenk 2647c609719bSwdenk Define this variable to enable the "hush" shell (from 2648c609719bSwdenk Busybox) as command line interpreter, thus enabling 2649c609719bSwdenk powerful command line syntax like 2650c609719bSwdenk if...then...else...fi conditionals or `&&' and '||' 2651c609719bSwdenk constructs ("shell scripts"). 2652c609719bSwdenk 2653c609719bSwdenk If undefined, you get the old, much simpler behaviour 2654c609719bSwdenk with a somewhat smaller memory footprint. 2655c609719bSwdenk 2656c609719bSwdenk 26576d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PROMPT_HUSH_PS2 2658c609719bSwdenk 2659c609719bSwdenk This defines the secondary prompt string, which is 2660c609719bSwdenk printed when the command interpreter needs more input 2661c609719bSwdenk to complete a command. Usually "> ". 2662c609719bSwdenk 2663c609719bSwdenk Note: 2664c609719bSwdenk 2665c609719bSwdenk In the current implementation, the local variables 2666c609719bSwdenk space and global environment variables space are 2667c609719bSwdenk separated. Local variables are those you define by 26683b57fe0aSwdenk simply typing `name=value'. To access a local 2669c609719bSwdenk variable later on, you have write `$name' or 26703b57fe0aSwdenk `${name}'; to execute the contents of a variable 26713b57fe0aSwdenk directly type `$name' at the command prompt. 2672c609719bSwdenk 2673c609719bSwdenk Global environment variables are those you use 2674c609719bSwdenk setenv/printenv to work with. To run a command stored 2675c609719bSwdenk in such a variable, you need to use the run command, 2676c609719bSwdenk and you must not use the '$' sign to access them. 2677c609719bSwdenk 2678c609719bSwdenk To store commands and special characters in a 2679c609719bSwdenk variable, please use double quotation marks 2680c609719bSwdenk surrounding the whole text of the variable, instead 2681c609719bSwdenk of the backslashes before semicolons and special 2682c609719bSwdenk symbols. 2683c609719bSwdenk 2684aa0c71acSWolfgang Denk- Commandline Editing and History: 2685aa0c71acSWolfgang Denk CONFIG_CMDLINE_EDITING 2686aa0c71acSWolfgang Denk 268711ccc33fSMarcel Ziswiler Enable editing and History functions for interactive 2688aa0c71acSWolfgang Denk commandline input operations 2689aa0c71acSWolfgang Denk 2690a8c7c708Swdenk- Default Environment: 2691c609719bSwdenk CONFIG_EXTRA_ENV_SETTINGS 2692c609719bSwdenk 2693c609719bSwdenk Define this to contain any number of null terminated 2694c609719bSwdenk strings (variable = value pairs) that will be part of 26957152b1d0Swdenk the default environment compiled into the boot image. 26962262cfeeSwdenk 2697c609719bSwdenk For example, place something like this in your 2698c609719bSwdenk board's config file: 2699c609719bSwdenk 2700c609719bSwdenk #define CONFIG_EXTRA_ENV_SETTINGS \ 2701c609719bSwdenk "myvar1=value1\0" \ 2702c609719bSwdenk "myvar2=value2\0" 2703c609719bSwdenk 2704c609719bSwdenk Warning: This method is based on knowledge about the 2705c609719bSwdenk internal format how the environment is stored by the 27062262cfeeSwdenk U-Boot code. This is NOT an official, exported 2707c609719bSwdenk interface! Although it is unlikely that this format 27087152b1d0Swdenk will change soon, there is no guarantee either. 2709c609719bSwdenk You better know what you are doing here. 2710c609719bSwdenk 2711c609719bSwdenk Note: overly (ab)use of the default environment is 2712c609719bSwdenk discouraged. Make sure to check other ways to preset 271374de7aefSWolfgang Denk the environment like the "source" command or the 2714c609719bSwdenk boot command first. 2715c609719bSwdenk 27165e724ca2SStephen Warren CONFIG_ENV_VARS_UBOOT_CONFIG 27175e724ca2SStephen Warren 27185e724ca2SStephen Warren Define this in order to add variables describing the 27195e724ca2SStephen Warren U-Boot build configuration to the default environment. 27205e724ca2SStephen Warren These will be named arch, cpu, board, vendor, and soc. 27215e724ca2SStephen Warren 27225e724ca2SStephen Warren Enabling this option will cause the following to be defined: 27235e724ca2SStephen Warren 27245e724ca2SStephen Warren - CONFIG_SYS_ARCH 27255e724ca2SStephen Warren - CONFIG_SYS_CPU 27265e724ca2SStephen Warren - CONFIG_SYS_BOARD 27275e724ca2SStephen Warren - CONFIG_SYS_VENDOR 27285e724ca2SStephen Warren - CONFIG_SYS_SOC 27295e724ca2SStephen Warren 27307e27f89fSTom Rini CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG 27317e27f89fSTom Rini 27327e27f89fSTom Rini Define this in order to add variables describing certain 27337e27f89fSTom Rini run-time determined information about the hardware to the 27347e27f89fSTom Rini environment. These will be named board_name, board_rev. 27357e27f89fSTom Rini 273606fd8538SSimon Glass CONFIG_DELAY_ENVIRONMENT 273706fd8538SSimon Glass 273806fd8538SSimon Glass Normally the environment is loaded when the board is 273906fd8538SSimon Glass intialised so that it is available to U-Boot. This inhibits 274006fd8538SSimon Glass that so that the environment is not available until 274106fd8538SSimon Glass explicitly loaded later by U-Boot code. With CONFIG_OF_CONTROL 274206fd8538SSimon Glass this is instead controlled by the value of 274306fd8538SSimon Glass /config/load-environment. 274406fd8538SSimon Glass 2745a8c7c708Swdenk- DataFlash Support: 27462abbe075Swdenk CONFIG_HAS_DATAFLASH 27472abbe075Swdenk 27482abbe075Swdenk Defining this option enables DataFlash features and 27492abbe075Swdenk allows to read/write in Dataflash via the standard 27502abbe075Swdenk commands cp, md... 27512abbe075Swdenk 2752f61ec45eSEric Nelson- Serial Flash support 2753f61ec45eSEric Nelson CONFIG_CMD_SF 2754f61ec45eSEric Nelson 2755f61ec45eSEric Nelson Defining this option enables SPI flash commands 2756f61ec45eSEric Nelson 'sf probe/read/write/erase/update'. 2757f61ec45eSEric Nelson 2758f61ec45eSEric Nelson Usage requires an initial 'probe' to define the serial 2759f61ec45eSEric Nelson flash parameters, followed by read/write/erase/update 2760f61ec45eSEric Nelson commands. 2761f61ec45eSEric Nelson 2762f61ec45eSEric Nelson The following defaults may be provided by the platform 2763f61ec45eSEric Nelson to handle the common case when only a single serial 2764f61ec45eSEric Nelson flash is present on the system. 2765f61ec45eSEric Nelson 2766f61ec45eSEric Nelson CONFIG_SF_DEFAULT_BUS Bus identifier 2767f61ec45eSEric Nelson CONFIG_SF_DEFAULT_CS Chip-select 2768f61ec45eSEric Nelson CONFIG_SF_DEFAULT_MODE (see include/spi.h) 2769f61ec45eSEric Nelson CONFIG_SF_DEFAULT_SPEED in Hz 2770f61ec45eSEric Nelson 277124007273SSimon Glass CONFIG_CMD_SF_TEST 277224007273SSimon Glass 277324007273SSimon Glass Define this option to include a destructive SPI flash 277424007273SSimon Glass test ('sf test'). 277524007273SSimon Glass 27761dcd6d03SJagannadha Sutradharudu Teki CONFIG_SPI_FLASH_BAR Ban/Extended Addr Reg 27771dcd6d03SJagannadha Sutradharudu Teki 27781dcd6d03SJagannadha Sutradharudu Teki Define this option to use the Bank addr/Extended addr 27791dcd6d03SJagannadha Sutradharudu Teki support on SPI flashes which has size > 16Mbytes. 27801dcd6d03SJagannadha Sutradharudu Teki 2781b902e07cSJagannadha Sutradharudu Teki CONFIG_SF_DUAL_FLASH Dual flash memories 2782b902e07cSJagannadha Sutradharudu Teki 2783b902e07cSJagannadha Sutradharudu Teki Define this option to use dual flash support where two flash 2784b902e07cSJagannadha Sutradharudu Teki memories can be connected with a given cs line. 2785b902e07cSJagannadha Sutradharudu Teki currently Xilinx Zynq qspi support these type of connections. 2786b902e07cSJagannadha Sutradharudu Teki 27873f85ce27Swdenk- SystemACE Support: 27883f85ce27Swdenk CONFIG_SYSTEMACE 27893f85ce27Swdenk 27903f85ce27Swdenk Adding this option adds support for Xilinx SystemACE 27913f85ce27Swdenk chips attached via some sort of local bus. The address 279211ccc33fSMarcel Ziswiler of the chip must also be defined in the 27936d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SYSTEMACE_BASE macro. For example: 27943f85ce27Swdenk 27953f85ce27Swdenk #define CONFIG_SYSTEMACE 27966d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_SYSTEMACE_BASE 0xf0000000 27973f85ce27Swdenk 27983f85ce27Swdenk When SystemACE support is added, the "ace" device type 27993f85ce27Swdenk becomes available to the fat commands, i.e. fatls. 28003f85ce27Swdenk 2801ecb0ccd9SWolfgang Denk- TFTP Fixed UDP Port: 2802ecb0ccd9SWolfgang Denk CONFIG_TFTP_PORT 2803ecb0ccd9SWolfgang Denk 280428cb9375SWolfgang Denk If this is defined, the environment variable tftpsrcp 2805ecb0ccd9SWolfgang Denk is used to supply the TFTP UDP source port value. 280628cb9375SWolfgang Denk If tftpsrcp isn't defined, the normal pseudo-random port 2807ecb0ccd9SWolfgang Denk number generator is used. 2808ecb0ccd9SWolfgang Denk 280928cb9375SWolfgang Denk Also, the environment variable tftpdstp is used to supply 281028cb9375SWolfgang Denk the TFTP UDP destination port value. If tftpdstp isn't 281128cb9375SWolfgang Denk defined, the normal port 69 is used. 281228cb9375SWolfgang Denk 281328cb9375SWolfgang Denk The purpose for tftpsrcp is to allow a TFTP server to 2814ecb0ccd9SWolfgang Denk blindly start the TFTP transfer using the pre-configured 2815ecb0ccd9SWolfgang Denk target IP address and UDP port. This has the effect of 2816ecb0ccd9SWolfgang Denk "punching through" the (Windows XP) firewall, allowing 2817ecb0ccd9SWolfgang Denk the remainder of the TFTP transfer to proceed normally. 2818ecb0ccd9SWolfgang Denk A better solution is to properly configure the firewall, 2819ecb0ccd9SWolfgang Denk but sometimes that is not allowed. 2820ecb0ccd9SWolfgang Denk 2821bf36c5d5SSimon Glass- Hashing support: 2822bf36c5d5SSimon Glass CONFIG_CMD_HASH 2823bf36c5d5SSimon Glass 2824bf36c5d5SSimon Glass This enables a generic 'hash' command which can produce 2825bf36c5d5SSimon Glass hashes / digests from a few algorithms (e.g. SHA1, SHA256). 2826bf36c5d5SSimon Glass 2827bf36c5d5SSimon Glass CONFIG_HASH_VERIFY 2828bf36c5d5SSimon Glass 2829bf36c5d5SSimon Glass Enable the hash verify command (hash -v). This adds to code 2830bf36c5d5SSimon Glass size a little. 2831bf36c5d5SSimon Glass 2832bf36c5d5SSimon Glass CONFIG_SHA1 - support SHA1 hashing 2833bf36c5d5SSimon Glass CONFIG_SHA256 - support SHA256 hashing 2834bf36c5d5SSimon Glass 2835bf36c5d5SSimon Glass Note: There is also a sha1sum command, which should perhaps 2836bf36c5d5SSimon Glass be deprecated in favour of 'hash sha1'. 2837bf36c5d5SSimon Glass 2838a11f1873SRobert Winkler- Freescale i.MX specific commands: 2839a11f1873SRobert Winkler CONFIG_CMD_HDMIDETECT 2840a11f1873SRobert Winkler This enables 'hdmidet' command which returns true if an 2841a11f1873SRobert Winkler HDMI monitor is detected. This command is i.MX 6 specific. 2842a11f1873SRobert Winkler 2843a11f1873SRobert Winkler CONFIG_CMD_BMODE 2844a11f1873SRobert Winkler This enables the 'bmode' (bootmode) command for forcing 2845a11f1873SRobert Winkler a boot from specific media. 2846a11f1873SRobert Winkler 2847a11f1873SRobert Winkler This is useful for forcing the ROM's usb downloader to 2848a11f1873SRobert Winkler activate upon a watchdog reset which is nice when iterating 2849a11f1873SRobert Winkler on U-Boot. Using the reset button or running bmode normal 2850a11f1873SRobert Winkler will set it back to normal. This command currently 2851a11f1873SRobert Winkler supports i.MX53 and i.MX6. 2852a11f1873SRobert Winkler 285319c402afSSimon Glass- Signing support: 285419c402afSSimon Glass CONFIG_RSA 285519c402afSSimon Glass 285619c402afSSimon Glass This enables the RSA algorithm used for FIT image verification 28578bf2aad7SDetlev Zundel in U-Boot. See doc/uImage.FIT/signature.txt for more information. 285819c402afSSimon Glass 285919c402afSSimon Glass The signing part is build into mkimage regardless of this 286019c402afSSimon Glass option. 286119c402afSSimon Glass 28629e50c406SHeiko Schocher- bootcount support: 28639e50c406SHeiko Schocher CONFIG_BOOTCOUNT_LIMIT 28649e50c406SHeiko Schocher 28659e50c406SHeiko Schocher This enables the bootcounter support, see: 28669e50c406SHeiko Schocher http://www.denx.de/wiki/DULG/UBootBootCountLimit 28679e50c406SHeiko Schocher 28689e50c406SHeiko Schocher CONFIG_AT91SAM9XE 28699e50c406SHeiko Schocher enable special bootcounter support on at91sam9xe based boards. 28709e50c406SHeiko Schocher CONFIG_BLACKFIN 28719e50c406SHeiko Schocher enable special bootcounter support on blackfin based boards. 28729e50c406SHeiko Schocher CONFIG_SOC_DA8XX 28739e50c406SHeiko Schocher enable special bootcounter support on da850 based boards. 28749e50c406SHeiko Schocher CONFIG_BOOTCOUNT_RAM 28759e50c406SHeiko Schocher enable support for the bootcounter in RAM 28769e50c406SHeiko Schocher CONFIG_BOOTCOUNT_I2C 28779e50c406SHeiko Schocher enable support for the bootcounter on an i2c (like RTC) device. 28789e50c406SHeiko Schocher CONFIG_SYS_I2C_RTC_ADDR = i2c chip address 28799e50c406SHeiko Schocher CONFIG_SYS_BOOTCOUNT_ADDR = i2c addr which is used for 28809e50c406SHeiko Schocher the bootcounter. 28819e50c406SHeiko Schocher CONFIG_BOOTCOUNT_ALEN = address len 288219c402afSSimon Glass 2883a8c7c708Swdenk- Show boot progress: 2884c609719bSwdenk CONFIG_SHOW_BOOT_PROGRESS 2885c609719bSwdenk 2886c609719bSwdenk Defining this option allows to add some board- 2887c609719bSwdenk specific code (calling a user-provided function 2888c609719bSwdenk "show_boot_progress(int)") that enables you to show 2889c609719bSwdenk the system's boot progress on some display (for 2890c609719bSwdenk example, some LED's) on your board. At the moment, 2891c609719bSwdenk the following checkpoints are implemented: 2892c609719bSwdenk 28933a608ca0SSimon Glass- Detailed boot stage timing 28943a608ca0SSimon Glass CONFIG_BOOTSTAGE 28953a608ca0SSimon Glass Define this option to get detailed timing of each stage 28963a608ca0SSimon Glass of the boot process. 28973a608ca0SSimon Glass 28983a608ca0SSimon Glass CONFIG_BOOTSTAGE_USER_COUNT 28993a608ca0SSimon Glass This is the number of available user bootstage records. 29003a608ca0SSimon Glass Each time you call bootstage_mark(BOOTSTAGE_ID_ALLOC, ...) 29013a608ca0SSimon Glass a new ID will be allocated from this stash. If you exceed 29023a608ca0SSimon Glass the limit, recording will stop. 29033a608ca0SSimon Glass 29043a608ca0SSimon Glass CONFIG_BOOTSTAGE_REPORT 29053a608ca0SSimon Glass Define this to print a report before boot, similar to this: 29063a608ca0SSimon Glass 29073a608ca0SSimon Glass Timer summary in microseconds: 29083a608ca0SSimon Glass Mark Elapsed Stage 29093a608ca0SSimon Glass 0 0 reset 29103a608ca0SSimon Glass 3,575,678 3,575,678 board_init_f start 29113a608ca0SSimon Glass 3,575,695 17 arch_cpu_init A9 29123a608ca0SSimon Glass 3,575,777 82 arch_cpu_init done 29133a608ca0SSimon Glass 3,659,598 83,821 board_init_r start 29143a608ca0SSimon Glass 3,910,375 250,777 main_loop 29153a608ca0SSimon Glass 29,916,167 26,005,792 bootm_start 29163a608ca0SSimon Glass 30,361,327 445,160 start_kernel 29173a608ca0SSimon Glass 29182eba38cfSSimon Glass CONFIG_CMD_BOOTSTAGE 29192eba38cfSSimon Glass Add a 'bootstage' command which supports printing a report 29202eba38cfSSimon Glass and un/stashing of bootstage data. 29212eba38cfSSimon Glass 292294fd1316SSimon Glass CONFIG_BOOTSTAGE_FDT 292394fd1316SSimon Glass Stash the bootstage information in the FDT. A root 'bootstage' 292494fd1316SSimon Glass node is created with each bootstage id as a child. Each child 292594fd1316SSimon Glass has a 'name' property and either 'mark' containing the 292694fd1316SSimon Glass mark time in microsecond, or 'accum' containing the 292794fd1316SSimon Glass accumulated time for that bootstage id in microseconds. 292894fd1316SSimon Glass For example: 292994fd1316SSimon Glass 293094fd1316SSimon Glass bootstage { 293194fd1316SSimon Glass 154 { 293294fd1316SSimon Glass name = "board_init_f"; 293394fd1316SSimon Glass mark = <3575678>; 293494fd1316SSimon Glass }; 293594fd1316SSimon Glass 170 { 293694fd1316SSimon Glass name = "lcd"; 293794fd1316SSimon Glass accum = <33482>; 293894fd1316SSimon Glass }; 293994fd1316SSimon Glass }; 294094fd1316SSimon Glass 294194fd1316SSimon Glass Code in the Linux kernel can find this in /proc/devicetree. 294294fd1316SSimon Glass 29431372cce2SMarian BalakowiczLegacy uImage format: 29441372cce2SMarian Balakowicz 2945c609719bSwdenk Arg Where When 2946c609719bSwdenk 1 common/cmd_bootm.c before attempting to boot an image 2947c609719bSwdenk -1 common/cmd_bootm.c Image header has bad magic number 2948c609719bSwdenk 2 common/cmd_bootm.c Image header has correct magic number 2949c609719bSwdenk -2 common/cmd_bootm.c Image header has bad checksum 2950c609719bSwdenk 3 common/cmd_bootm.c Image header has correct checksum 2951c609719bSwdenk -3 common/cmd_bootm.c Image data has bad checksum 2952c609719bSwdenk 4 common/cmd_bootm.c Image data has correct checksum 2953c609719bSwdenk -4 common/cmd_bootm.c Image is for unsupported architecture 2954c609719bSwdenk 5 common/cmd_bootm.c Architecture check OK 29551372cce2SMarian Balakowicz -5 common/cmd_bootm.c Wrong Image Type (not kernel, multi) 2956c609719bSwdenk 6 common/cmd_bootm.c Image Type check OK 2957c609719bSwdenk -6 common/cmd_bootm.c gunzip uncompression error 2958c609719bSwdenk -7 common/cmd_bootm.c Unimplemented compression type 2959c609719bSwdenk 7 common/cmd_bootm.c Uncompression OK 29601372cce2SMarian Balakowicz 8 common/cmd_bootm.c No uncompress/copy overwrite error 2961c609719bSwdenk -9 common/cmd_bootm.c Unsupported OS (not Linux, BSD, VxWorks, QNX) 29621372cce2SMarian Balakowicz 29631372cce2SMarian Balakowicz 9 common/image.c Start initial ramdisk verification 29641372cce2SMarian Balakowicz -10 common/image.c Ramdisk header has bad magic number 29651372cce2SMarian Balakowicz -11 common/image.c Ramdisk header has bad checksum 29661372cce2SMarian Balakowicz 10 common/image.c Ramdisk header is OK 29671372cce2SMarian Balakowicz -12 common/image.c Ramdisk data has bad checksum 29681372cce2SMarian Balakowicz 11 common/image.c Ramdisk data has correct checksum 29691372cce2SMarian Balakowicz 12 common/image.c Ramdisk verification complete, start loading 297011ccc33fSMarcel Ziswiler -13 common/image.c Wrong Image Type (not PPC Linux ramdisk) 29711372cce2SMarian Balakowicz 13 common/image.c Start multifile image verification 29721372cce2SMarian Balakowicz 14 common/image.c No initial ramdisk, no multifile, continue. 29731372cce2SMarian Balakowicz 2974ea0364f1SPeter Tyser 15 arch/<arch>/lib/bootm.c All preparation done, transferring control to OS 2975c609719bSwdenk 2976a47a12beSStefan Roese -30 arch/powerpc/lib/board.c Fatal error, hang the system 297763e73c9aSwdenk -31 post/post.c POST test failed, detected by post_output_backlog() 297863e73c9aSwdenk -32 post/post.c POST test failed, detected by post_run_single() 297963e73c9aSwdenk 2980566a494fSHeiko Schocher 34 common/cmd_doc.c before loading a Image from a DOC device 2981566a494fSHeiko Schocher -35 common/cmd_doc.c Bad usage of "doc" command 2982566a494fSHeiko Schocher 35 common/cmd_doc.c correct usage of "doc" command 2983566a494fSHeiko Schocher -36 common/cmd_doc.c No boot device 2984566a494fSHeiko Schocher 36 common/cmd_doc.c correct boot device 2985566a494fSHeiko Schocher -37 common/cmd_doc.c Unknown Chip ID on boot device 2986566a494fSHeiko Schocher 37 common/cmd_doc.c correct chip ID found, device available 2987566a494fSHeiko Schocher -38 common/cmd_doc.c Read Error on boot device 2988566a494fSHeiko Schocher 38 common/cmd_doc.c reading Image header from DOC device OK 2989566a494fSHeiko Schocher -39 common/cmd_doc.c Image header has bad magic number 2990566a494fSHeiko Schocher 39 common/cmd_doc.c Image header has correct magic number 2991566a494fSHeiko Schocher -40 common/cmd_doc.c Error reading Image from DOC device 2992566a494fSHeiko Schocher 40 common/cmd_doc.c Image header has correct magic number 2993566a494fSHeiko Schocher 41 common/cmd_ide.c before loading a Image from a IDE device 2994566a494fSHeiko Schocher -42 common/cmd_ide.c Bad usage of "ide" command 2995566a494fSHeiko Schocher 42 common/cmd_ide.c correct usage of "ide" command 2996566a494fSHeiko Schocher -43 common/cmd_ide.c No boot device 2997566a494fSHeiko Schocher 43 common/cmd_ide.c boot device found 2998566a494fSHeiko Schocher -44 common/cmd_ide.c Device not available 2999566a494fSHeiko Schocher 44 common/cmd_ide.c Device available 3000566a494fSHeiko Schocher -45 common/cmd_ide.c wrong partition selected 3001566a494fSHeiko Schocher 45 common/cmd_ide.c partition selected 3002566a494fSHeiko Schocher -46 common/cmd_ide.c Unknown partition table 3003566a494fSHeiko Schocher 46 common/cmd_ide.c valid partition table found 3004566a494fSHeiko Schocher -47 common/cmd_ide.c Invalid partition type 3005566a494fSHeiko Schocher 47 common/cmd_ide.c correct partition type 3006566a494fSHeiko Schocher -48 common/cmd_ide.c Error reading Image Header on boot device 3007566a494fSHeiko Schocher 48 common/cmd_ide.c reading Image Header from IDE device OK 3008566a494fSHeiko Schocher -49 common/cmd_ide.c Image header has bad magic number 3009566a494fSHeiko Schocher 49 common/cmd_ide.c Image header has correct magic number 3010566a494fSHeiko Schocher -50 common/cmd_ide.c Image header has bad checksum 3011566a494fSHeiko Schocher 50 common/cmd_ide.c Image header has correct checksum 3012566a494fSHeiko Schocher -51 common/cmd_ide.c Error reading Image from IDE device 3013566a494fSHeiko Schocher 51 common/cmd_ide.c reading Image from IDE device OK 3014566a494fSHeiko Schocher 52 common/cmd_nand.c before loading a Image from a NAND device 3015566a494fSHeiko Schocher -53 common/cmd_nand.c Bad usage of "nand" command 3016566a494fSHeiko Schocher 53 common/cmd_nand.c correct usage of "nand" command 3017566a494fSHeiko Schocher -54 common/cmd_nand.c No boot device 3018566a494fSHeiko Schocher 54 common/cmd_nand.c boot device found 3019566a494fSHeiko Schocher -55 common/cmd_nand.c Unknown Chip ID on boot device 3020566a494fSHeiko Schocher 55 common/cmd_nand.c correct chip ID found, device available 3021566a494fSHeiko Schocher -56 common/cmd_nand.c Error reading Image Header on boot device 3022566a494fSHeiko Schocher 56 common/cmd_nand.c reading Image Header from NAND device OK 3023566a494fSHeiko Schocher -57 common/cmd_nand.c Image header has bad magic number 3024566a494fSHeiko Schocher 57 common/cmd_nand.c Image header has correct magic number 3025566a494fSHeiko Schocher -58 common/cmd_nand.c Error reading Image from NAND device 3026566a494fSHeiko Schocher 58 common/cmd_nand.c reading Image from NAND device OK 3027c609719bSwdenk 3028566a494fSHeiko Schocher -60 common/env_common.c Environment has a bad CRC, using default 3029c609719bSwdenk 3030566a494fSHeiko Schocher 64 net/eth.c starting with Ethernet configuration. 3031566a494fSHeiko Schocher -64 net/eth.c no Ethernet found. 3032566a494fSHeiko Schocher 65 net/eth.c Ethernet found. 3033206c60cbSwdenk 3034566a494fSHeiko Schocher -80 common/cmd_net.c usage wrong 3035566a494fSHeiko Schocher 80 common/cmd_net.c before calling NetLoop() 303611ccc33fSMarcel Ziswiler -81 common/cmd_net.c some error in NetLoop() occurred 3037566a494fSHeiko Schocher 81 common/cmd_net.c NetLoop() back without error 3038566a494fSHeiko Schocher -82 common/cmd_net.c size == 0 (File with size 0 loaded) 3039566a494fSHeiko Schocher 82 common/cmd_net.c trying automatic boot 304074de7aefSWolfgang Denk 83 common/cmd_net.c running "source" command 304174de7aefSWolfgang Denk -83 common/cmd_net.c some error in automatic boot or "source" command 3042566a494fSHeiko Schocher 84 common/cmd_net.c end without errors 3043c609719bSwdenk 30441372cce2SMarian BalakowiczFIT uImage format: 30451372cce2SMarian Balakowicz 30461372cce2SMarian Balakowicz Arg Where When 30471372cce2SMarian Balakowicz 100 common/cmd_bootm.c Kernel FIT Image has correct format 30481372cce2SMarian Balakowicz -100 common/cmd_bootm.c Kernel FIT Image has incorrect format 30491372cce2SMarian Balakowicz 101 common/cmd_bootm.c No Kernel subimage unit name, using configuration 30501372cce2SMarian Balakowicz -101 common/cmd_bootm.c Can't get configuration for kernel subimage 30511372cce2SMarian Balakowicz 102 common/cmd_bootm.c Kernel unit name specified 30521372cce2SMarian Balakowicz -103 common/cmd_bootm.c Can't get kernel subimage node offset 3053f773bea8SMarian Balakowicz 103 common/cmd_bootm.c Found configuration node 30541372cce2SMarian Balakowicz 104 common/cmd_bootm.c Got kernel subimage node offset 30551372cce2SMarian Balakowicz -104 common/cmd_bootm.c Kernel subimage hash verification failed 30561372cce2SMarian Balakowicz 105 common/cmd_bootm.c Kernel subimage hash verification OK 30571372cce2SMarian Balakowicz -105 common/cmd_bootm.c Kernel subimage is for unsupported architecture 30581372cce2SMarian Balakowicz 106 common/cmd_bootm.c Architecture check OK 305911ccc33fSMarcel Ziswiler -106 common/cmd_bootm.c Kernel subimage has wrong type 306011ccc33fSMarcel Ziswiler 107 common/cmd_bootm.c Kernel subimage type OK 30611372cce2SMarian Balakowicz -107 common/cmd_bootm.c Can't get kernel subimage data/size 30621372cce2SMarian Balakowicz 108 common/cmd_bootm.c Got kernel subimage data/size 30631372cce2SMarian Balakowicz -108 common/cmd_bootm.c Wrong image type (not legacy, FIT) 30641372cce2SMarian Balakowicz -109 common/cmd_bootm.c Can't get kernel subimage type 30651372cce2SMarian Balakowicz -110 common/cmd_bootm.c Can't get kernel subimage comp 30661372cce2SMarian Balakowicz -111 common/cmd_bootm.c Can't get kernel subimage os 30671372cce2SMarian Balakowicz -112 common/cmd_bootm.c Can't get kernel subimage load address 30681372cce2SMarian Balakowicz -113 common/cmd_bootm.c Image uncompress/copy overwrite error 30691372cce2SMarian Balakowicz 30701372cce2SMarian Balakowicz 120 common/image.c Start initial ramdisk verification 30711372cce2SMarian Balakowicz -120 common/image.c Ramdisk FIT image has incorrect format 30721372cce2SMarian Balakowicz 121 common/image.c Ramdisk FIT image has correct format 307311ccc33fSMarcel Ziswiler 122 common/image.c No ramdisk subimage unit name, using configuration 30741372cce2SMarian Balakowicz -122 common/image.c Can't get configuration for ramdisk subimage 30751372cce2SMarian Balakowicz 123 common/image.c Ramdisk unit name specified 30761372cce2SMarian Balakowicz -124 common/image.c Can't get ramdisk subimage node offset 30771372cce2SMarian Balakowicz 125 common/image.c Got ramdisk subimage node offset 30781372cce2SMarian Balakowicz -125 common/image.c Ramdisk subimage hash verification failed 30791372cce2SMarian Balakowicz 126 common/image.c Ramdisk subimage hash verification OK 30801372cce2SMarian Balakowicz -126 common/image.c Ramdisk subimage for unsupported architecture 30811372cce2SMarian Balakowicz 127 common/image.c Architecture check OK 30821372cce2SMarian Balakowicz -127 common/image.c Can't get ramdisk subimage data/size 30831372cce2SMarian Balakowicz 128 common/image.c Got ramdisk subimage data/size 30841372cce2SMarian Balakowicz 129 common/image.c Can't get ramdisk load address 30851372cce2SMarian Balakowicz -129 common/image.c Got ramdisk load address 30861372cce2SMarian Balakowicz 308711ccc33fSMarcel Ziswiler -130 common/cmd_doc.c Incorrect FIT image format 30881372cce2SMarian Balakowicz 131 common/cmd_doc.c FIT image format OK 30891372cce2SMarian Balakowicz 309011ccc33fSMarcel Ziswiler -140 common/cmd_ide.c Incorrect FIT image format 30911372cce2SMarian Balakowicz 141 common/cmd_ide.c FIT image format OK 30921372cce2SMarian Balakowicz 309311ccc33fSMarcel Ziswiler -150 common/cmd_nand.c Incorrect FIT image format 30941372cce2SMarian Balakowicz 151 common/cmd_nand.c FIT image format OK 30951372cce2SMarian Balakowicz 3096d95f6ec7SGabe Black- FIT image support: 3097d95f6ec7SGabe Black CONFIG_FIT 3098d95f6ec7SGabe Black Enable support for the FIT uImage format. 3099d95f6ec7SGabe Black 3100d95f6ec7SGabe Black CONFIG_FIT_BEST_MATCH 3101d95f6ec7SGabe Black When no configuration is explicitly selected, default to the 3102d95f6ec7SGabe Black one whose fdt's compatibility field best matches that of 3103d95f6ec7SGabe Black U-Boot itself. A match is considered "best" if it matches the 3104d95f6ec7SGabe Black most specific compatibility entry of U-Boot's fdt's root node. 3105d95f6ec7SGabe Black The order of entries in the configuration's fdt is ignored. 3106d95f6ec7SGabe Black 31073e569a6bSSimon Glass CONFIG_FIT_SIGNATURE 31083e569a6bSSimon Glass This option enables signature verification of FIT uImages, 31093e569a6bSSimon Glass using a hash signed and verified using RSA. See 31103e569a6bSSimon Glass doc/uImage.FIT/signature.txt for more details. 31113e569a6bSSimon Glass 31124cf2609bSWolfgang Denk- Standalone program support: 31134cf2609bSWolfgang Denk CONFIG_STANDALONE_LOAD_ADDR 31144cf2609bSWolfgang Denk 31156feff899SWolfgang Denk This option defines a board specific value for the 31166feff899SWolfgang Denk address where standalone program gets loaded, thus 31176feff899SWolfgang Denk overwriting the architecture dependent default 31184cf2609bSWolfgang Denk settings. 31194cf2609bSWolfgang Denk 31204cf2609bSWolfgang Denk- Frame Buffer Address: 31214cf2609bSWolfgang Denk CONFIG_FB_ADDR 31224cf2609bSWolfgang Denk 31234cf2609bSWolfgang Denk Define CONFIG_FB_ADDR if you want to use specific 312444a53b57SWolfgang Denk address for frame buffer. This is typically the case 312544a53b57SWolfgang Denk when using a graphics controller has separate video 312644a53b57SWolfgang Denk memory. U-Boot will then place the frame buffer at 312744a53b57SWolfgang Denk the given address instead of dynamically reserving it 312844a53b57SWolfgang Denk in system RAM by calling lcd_setmem(), which grabs 312944a53b57SWolfgang Denk the memory for the frame buffer depending on the 313044a53b57SWolfgang Denk configured panel size. 31314cf2609bSWolfgang Denk 31324cf2609bSWolfgang Denk Please see board_init_f function. 31334cf2609bSWolfgang Denk 3134cccfc2abSDetlev Zundel- Automatic software updates via TFTP server 3135cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP 3136cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP_CNT_MAX 3137cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP_MSEC_MAX 3138cccfc2abSDetlev Zundel 3139cccfc2abSDetlev Zundel These options enable and control the auto-update feature; 3140cccfc2abSDetlev Zundel for a more detailed description refer to doc/README.update. 3141cccfc2abSDetlev Zundel 3142cccfc2abSDetlev Zundel- MTD Support (mtdparts command, UBI support) 3143cccfc2abSDetlev Zundel CONFIG_MTD_DEVICE 3144cccfc2abSDetlev Zundel 3145cccfc2abSDetlev Zundel Adds the MTD device infrastructure from the Linux kernel. 3146cccfc2abSDetlev Zundel Needed for mtdparts command support. 3147cccfc2abSDetlev Zundel 3148cccfc2abSDetlev Zundel CONFIG_MTD_PARTITIONS 3149cccfc2abSDetlev Zundel 3150cccfc2abSDetlev Zundel Adds the MTD partitioning infrastructure from the Linux 3151cccfc2abSDetlev Zundel kernel. Needed for UBI support. 3152cccfc2abSDetlev Zundel 315370c219cdSJoe Hershberger- UBI support 315470c219cdSJoe Hershberger CONFIG_CMD_UBI 315570c219cdSJoe Hershberger 315670c219cdSJoe Hershberger Adds commands for interacting with MTD partitions formatted 315770c219cdSJoe Hershberger with the UBI flash translation layer 315870c219cdSJoe Hershberger 315970c219cdSJoe Hershberger Requires also defining CONFIG_RBTREE 316070c219cdSJoe Hershberger 3161147162daSJoe Hershberger CONFIG_UBI_SILENCE_MSG 3162147162daSJoe Hershberger 3163147162daSJoe Hershberger Make the verbose messages from UBI stop printing. This leaves 3164147162daSJoe Hershberger warnings and errors enabled. 3165147162daSJoe Hershberger 316670c219cdSJoe Hershberger- UBIFS support 316770c219cdSJoe Hershberger CONFIG_CMD_UBIFS 316870c219cdSJoe Hershberger 316970c219cdSJoe Hershberger Adds commands for interacting with UBI volumes formatted as 317070c219cdSJoe Hershberger UBIFS. UBIFS is read-only in u-boot. 317170c219cdSJoe Hershberger 317270c219cdSJoe Hershberger Requires UBI support as well as CONFIG_LZO 317370c219cdSJoe Hershberger 3174147162daSJoe Hershberger CONFIG_UBIFS_SILENCE_MSG 3175147162daSJoe Hershberger 3176147162daSJoe Hershberger Make the verbose messages from UBIFS stop printing. This leaves 3177147162daSJoe Hershberger warnings and errors enabled. 3178147162daSJoe Hershberger 31796a11cf48SDaniel Schwierzeck- SPL framework 31806a11cf48SDaniel Schwierzeck CONFIG_SPL 31816a11cf48SDaniel Schwierzeck Enable building of SPL globally. 31826a11cf48SDaniel Schwierzeck 318395579793STom Rini CONFIG_SPL_LDSCRIPT 318495579793STom Rini LDSCRIPT for linking the SPL binary. 318595579793STom Rini 31866ebc3461SAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT 31876ebc3461SAlbert ARIBAUD Maximum size in memory allocated to the SPL, BSS included. 31886ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual memory 31896ebc3461SAlbert ARIBAUD used by SPL from _start to __bss_end does not exceed it. 31908960af8bSAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE 31916ebc3461SAlbert ARIBAUD must not be both defined at the same time. 31926ebc3461SAlbert ARIBAUD 319395579793STom Rini CONFIG_SPL_MAX_SIZE 31946ebc3461SAlbert ARIBAUD Maximum size of the SPL image (text, data, rodata, and 31956ebc3461SAlbert ARIBAUD linker lists sections), BSS excluded. 31966ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual size does 31976ebc3461SAlbert ARIBAUD not exceed it. 319895579793STom Rini 31996a11cf48SDaniel Schwierzeck CONFIG_SPL_TEXT_BASE 32006a11cf48SDaniel Schwierzeck TEXT_BASE for linking the SPL binary. 32016a11cf48SDaniel Schwierzeck 320294a45bb1SScott Wood CONFIG_SPL_RELOC_TEXT_BASE 320394a45bb1SScott Wood Address to relocate to. If unspecified, this is equal to 320494a45bb1SScott Wood CONFIG_SPL_TEXT_BASE (i.e. no relocation is done). 320594a45bb1SScott Wood 320695579793STom Rini CONFIG_SPL_BSS_START_ADDR 320795579793STom Rini Link address for the BSS within the SPL binary. 320895579793STom Rini 320995579793STom Rini CONFIG_SPL_BSS_MAX_SIZE 32106ebc3461SAlbert ARIBAUD Maximum size in memory allocated to the SPL BSS. 32116ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual memory used 32126ebc3461SAlbert ARIBAUD by SPL from __bss_start to __bss_end does not exceed it. 32138960af8bSAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE 32146ebc3461SAlbert ARIBAUD must not be both defined at the same time. 321595579793STom Rini 321695579793STom Rini CONFIG_SPL_STACK 321795579793STom Rini Adress of the start of the stack SPL will use 321895579793STom Rini 321994a45bb1SScott Wood CONFIG_SPL_RELOC_STACK 322094a45bb1SScott Wood Adress of the start of the stack SPL will use after 322194a45bb1SScott Wood relocation. If unspecified, this is equal to 322294a45bb1SScott Wood CONFIG_SPL_STACK. 322394a45bb1SScott Wood 322495579793STom Rini CONFIG_SYS_SPL_MALLOC_START 322595579793STom Rini Starting address of the malloc pool used in SPL. 322695579793STom Rini 322795579793STom Rini CONFIG_SYS_SPL_MALLOC_SIZE 322895579793STom Rini The size of the malloc pool used in SPL. 32296a11cf48SDaniel Schwierzeck 323047f7bcaeSTom Rini CONFIG_SPL_FRAMEWORK 323147f7bcaeSTom Rini Enable the SPL framework under common/. This framework 323247f7bcaeSTom Rini supports MMC, NAND and YMODEM loading of U-Boot and NAND 323347f7bcaeSTom Rini NAND loading of the Linux Kernel. 323447f7bcaeSTom Rini 3235861a86f4STom Rini CONFIG_SPL_DISPLAY_PRINT 3236861a86f4STom Rini For ARM, enable an optional function to print more information 3237861a86f4STom Rini about the running system. 3238861a86f4STom Rini 32394b919725SScott Wood CONFIG_SPL_INIT_MINIMAL 32404b919725SScott Wood Arch init code should be built for a very small image 32414b919725SScott Wood 32426a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBCOMMON_SUPPORT 32436a11cf48SDaniel Schwierzeck Support for common/libcommon.o in SPL binary 32446a11cf48SDaniel Schwierzeck 32456a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBDISK_SUPPORT 32466a11cf48SDaniel Schwierzeck Support for disk/libdisk.o in SPL binary 32476a11cf48SDaniel Schwierzeck 32486a11cf48SDaniel Schwierzeck CONFIG_SPL_I2C_SUPPORT 32496a11cf48SDaniel Schwierzeck Support for drivers/i2c/libi2c.o in SPL binary 32506a11cf48SDaniel Schwierzeck 32516a11cf48SDaniel Schwierzeck CONFIG_SPL_GPIO_SUPPORT 32526a11cf48SDaniel Schwierzeck Support for drivers/gpio/libgpio.o in SPL binary 32536a11cf48SDaniel Schwierzeck 32546a11cf48SDaniel Schwierzeck CONFIG_SPL_MMC_SUPPORT 32556a11cf48SDaniel Schwierzeck Support for drivers/mmc/libmmc.o in SPL binary 32566a11cf48SDaniel Schwierzeck 325795579793STom Rini CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR, 325895579793STom Rini CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS, 325995579793STom Rini CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION 326095579793STom Rini Address, size and partition on the MMC to load U-Boot from 326195579793STom Rini when the MMC is being used in raw mode. 326295579793STom Rini 32632b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 32642b75b0adSPeter Korsgaard Sector to load kernel uImage from when MMC is being 32652b75b0adSPeter Korsgaard used in raw mode (for Falcon mode) 32662b75b0adSPeter Korsgaard 32672b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR, 32682b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS 32692b75b0adSPeter Korsgaard Sector and number of sectors to load kernel argument 32702b75b0adSPeter Korsgaard parameters from when MMC is being used in raw mode 32712b75b0adSPeter Korsgaard (for falcon mode) 32722b75b0adSPeter Korsgaard 327395579793STom Rini CONFIG_SPL_FAT_SUPPORT 327495579793STom Rini Support for fs/fat/libfat.o in SPL binary 327595579793STom Rini 327695579793STom Rini CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME 327795579793STom Rini Filename to read to load U-Boot when reading from FAT 327895579793STom Rini 32797ad2cc79SPeter Korsgaard CONFIG_SPL_FAT_LOAD_KERNEL_NAME 32807ad2cc79SPeter Korsgaard Filename to read to load kernel uImage when reading 32817ad2cc79SPeter Korsgaard from FAT (for Falcon mode) 32827ad2cc79SPeter Korsgaard 32837ad2cc79SPeter Korsgaard CONFIG_SPL_FAT_LOAD_ARGS_NAME 32847ad2cc79SPeter Korsgaard Filename to read to load kernel argument parameters 32857ad2cc79SPeter Korsgaard when reading from FAT (for Falcon mode) 32867ad2cc79SPeter Korsgaard 328706f60ae3SScott Wood CONFIG_SPL_MPC83XX_WAIT_FOR_NAND 328806f60ae3SScott Wood Set this for NAND SPL on PPC mpc83xx targets, so that 328906f60ae3SScott Wood start.S waits for the rest of the SPL to load before 329006f60ae3SScott Wood continuing (the hardware starts execution after just 329106f60ae3SScott Wood loading the first page rather than the full 4K). 329206f60ae3SScott Wood 32936f2f01b9SScott Wood CONFIG_SPL_NAND_BASE 32946f2f01b9SScott Wood Include nand_base.c in the SPL. Requires 32956f2f01b9SScott Wood CONFIG_SPL_NAND_DRIVERS. 32966f2f01b9SScott Wood 32976f2f01b9SScott Wood CONFIG_SPL_NAND_DRIVERS 32986f2f01b9SScott Wood SPL uses normal NAND drivers, not minimal drivers. 32996f2f01b9SScott Wood 33006f2f01b9SScott Wood CONFIG_SPL_NAND_ECC 33016f2f01b9SScott Wood Include standard software ECC in the SPL 33026f2f01b9SScott Wood 330395579793STom Rini CONFIG_SPL_NAND_SIMPLE 33047d4b7955SScott Wood Support for NAND boot using simple NAND drivers that 33057d4b7955SScott Wood expose the cmd_ctrl() interface. 330695579793STom Rini 3307bb0dc108SYing Zhang CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT 3308bb0dc108SYing Zhang Set for the SPL on PPC mpc8xxx targets, support for 33095614e71bSYork Sun drivers/ddr/fsl/libddr.o in SPL binary. 3310bb0dc108SYing Zhang 33117c8eea59SYing Zhang CONFIG_SPL_COMMON_INIT_DDR 33127c8eea59SYing Zhang Set for common ddr init with serial presence detect in 33137c8eea59SYing Zhang SPL binary. 33147c8eea59SYing Zhang 331595579793STom Rini CONFIG_SYS_NAND_5_ADDR_CYCLE, CONFIG_SYS_NAND_PAGE_COUNT, 331695579793STom Rini CONFIG_SYS_NAND_PAGE_SIZE, CONFIG_SYS_NAND_OOBSIZE, 331795579793STom Rini CONFIG_SYS_NAND_BLOCK_SIZE, CONFIG_SYS_NAND_BAD_BLOCK_POS, 331895579793STom Rini CONFIG_SYS_NAND_ECCPOS, CONFIG_SYS_NAND_ECCSIZE, 331995579793STom Rini CONFIG_SYS_NAND_ECCBYTES 332095579793STom Rini Defines the size and behavior of the NAND that SPL uses 33217d4b7955SScott Wood to read U-Boot 332295579793STom Rini 3323fbe76ae4SPrabhakar Kushwaha CONFIG_SPL_NAND_BOOT 3324fbe76ae4SPrabhakar Kushwaha Add support NAND boot 3325fbe76ae4SPrabhakar Kushwaha 332695579793STom Rini CONFIG_SYS_NAND_U_BOOT_OFFS 33277d4b7955SScott Wood Location in NAND to read U-Boot from 33287d4b7955SScott Wood 33297d4b7955SScott Wood CONFIG_SYS_NAND_U_BOOT_DST 33307d4b7955SScott Wood Location in memory to load U-Boot to 33317d4b7955SScott Wood 33327d4b7955SScott Wood CONFIG_SYS_NAND_U_BOOT_SIZE 33337d4b7955SScott Wood Size of image to load 333495579793STom Rini 333595579793STom Rini CONFIG_SYS_NAND_U_BOOT_START 33367d4b7955SScott Wood Entry point in loaded image to jump to 333795579793STom Rini 333895579793STom Rini CONFIG_SYS_NAND_HW_ECC_OOBFIRST 333995579793STom Rini Define this if you need to first read the OOB and then the 334095579793STom Rini data. This is used for example on davinci plattforms. 334195579793STom Rini 334295579793STom Rini CONFIG_SPL_OMAP3_ID_NAND 334395579793STom Rini Support for an OMAP3-specific set of functions to return the 334495579793STom Rini ID and MFR of the first attached NAND chip, if present. 334595579793STom Rini 33466a11cf48SDaniel Schwierzeck CONFIG_SPL_SERIAL_SUPPORT 33476a11cf48SDaniel Schwierzeck Support for drivers/serial/libserial.o in SPL binary 33486a11cf48SDaniel Schwierzeck 33496a11cf48SDaniel Schwierzeck CONFIG_SPL_SPI_FLASH_SUPPORT 33506a11cf48SDaniel Schwierzeck Support for drivers/mtd/spi/libspi_flash.o in SPL binary 33516a11cf48SDaniel Schwierzeck 33526a11cf48SDaniel Schwierzeck CONFIG_SPL_SPI_SUPPORT 33536a11cf48SDaniel Schwierzeck Support for drivers/spi/libspi.o in SPL binary 33546a11cf48SDaniel Schwierzeck 3355c57b953dSPavel Machek CONFIG_SPL_RAM_DEVICE 3356c57b953dSPavel Machek Support for running image already present in ram, in SPL binary 3357c57b953dSPavel Machek 33586a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBGENERIC_SUPPORT 33596a11cf48SDaniel Schwierzeck Support for lib/libgeneric.o in SPL binary 33601372cce2SMarian Balakowicz 3361ba1bee43SYing Zhang CONFIG_SPL_ENV_SUPPORT 3362ba1bee43SYing Zhang Support for the environment operating in SPL binary 3363ba1bee43SYing Zhang 3364ba1bee43SYing Zhang CONFIG_SPL_NET_SUPPORT 3365ba1bee43SYing Zhang Support for the net/libnet.o in SPL binary. 3366ba1bee43SYing Zhang It conflicts with SPL env from storage medium specified by 3367ba1bee43SYing Zhang CONFIG_ENV_IS_xxx but CONFIG_ENV_IS_NOWHERE 3368ba1bee43SYing Zhang 336974752baaSScott Wood CONFIG_SPL_PAD_TO 33706113d3f2SBenoît Thébaudeau Image offset to which the SPL should be padded before appending 33716113d3f2SBenoît Thébaudeau the SPL payload. By default, this is defined as 33726113d3f2SBenoît Thébaudeau CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined. 33736113d3f2SBenoît Thébaudeau CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL 33746113d3f2SBenoît Thébaudeau payload without any padding, or >= CONFIG_SPL_MAX_SIZE. 337574752baaSScott Wood 3376ca2fca22SScott Wood CONFIG_SPL_TARGET 3377ca2fca22SScott Wood Final target image containing SPL and payload. Some SPLs 3378ca2fca22SScott Wood use an arch-specific makefile fragment instead, for 3379ca2fca22SScott Wood example if more than one image needs to be produced. 3380ca2fca22SScott Wood 338187ebee39SSimon Glass CONFIG_FIT_SPL_PRINT 338287ebee39SSimon Glass Printing information about a FIT image adds quite a bit of 338387ebee39SSimon Glass code to SPL. So this is normally disabled in SPL. Use this 338487ebee39SSimon Glass option to re-enable it. This will affect the output of the 338587ebee39SSimon Glass bootm command when booting a FIT image. 338687ebee39SSimon Glass 33873aa29de0SYing Zhang- TPL framework 33883aa29de0SYing Zhang CONFIG_TPL 33893aa29de0SYing Zhang Enable building of TPL globally. 33903aa29de0SYing Zhang 33913aa29de0SYing Zhang CONFIG_TPL_PAD_TO 33923aa29de0SYing Zhang Image offset to which the TPL should be padded before appending 33933aa29de0SYing Zhang the TPL payload. By default, this is defined as 33943aa29de0SYing Zhang CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined. 33953aa29de0SYing Zhang CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL 33963aa29de0SYing Zhang payload without any padding, or >= CONFIG_SPL_MAX_SIZE. 33973aa29de0SYing Zhang 3398c609719bSwdenkModem Support: 3399c609719bSwdenk-------------- 3400c609719bSwdenk 3401566e5cf4SWolfgang Denk[so far only for SMDK2400 boards] 3402c609719bSwdenk 340311ccc33fSMarcel Ziswiler- Modem support enable: 3404c609719bSwdenk CONFIG_MODEM_SUPPORT 3405c609719bSwdenk 3406c609719bSwdenk- RTS/CTS Flow control enable: 3407c609719bSwdenk CONFIG_HWFLOW 3408c609719bSwdenk 3409c609719bSwdenk- Modem debug support: 3410c609719bSwdenk CONFIG_MODEM_SUPPORT_DEBUG 3411c609719bSwdenk 3412c609719bSwdenk Enables debugging stuff (char screen[1024], dbg()) 3413c609719bSwdenk for modem support. Useful only with BDI2000. 3414c609719bSwdenk 3415a8c7c708Swdenk- Interrupt support (PPC): 3416a8c7c708Swdenk 3417a8c7c708Swdenk There are common interrupt_init() and timer_interrupt() 3418a8c7c708Swdenk for all PPC archs. interrupt_init() calls interrupt_init_cpu() 341911ccc33fSMarcel Ziswiler for CPU specific initialization. interrupt_init_cpu() 3420a8c7c708Swdenk should set decrementer_count to appropriate value. If 342111ccc33fSMarcel Ziswiler CPU resets decrementer automatically after interrupt 3422a8c7c708Swdenk (ppc4xx) it should set decrementer_count to zero. 342311ccc33fSMarcel Ziswiler timer_interrupt() calls timer_interrupt_cpu() for CPU 3424a8c7c708Swdenk specific handling. If board has watchdog / status_led 3425a8c7c708Swdenk / other_activity_monitor it works automatically from 3426a8c7c708Swdenk general timer_interrupt(). 3427a8c7c708Swdenk 3428c609719bSwdenk- General: 3429c609719bSwdenk 3430c609719bSwdenk In the target system modem support is enabled when a 3431c609719bSwdenk specific key (key combination) is pressed during 3432c609719bSwdenk power-on. Otherwise U-Boot will boot normally 343311ccc33fSMarcel Ziswiler (autoboot). The key_pressed() function is called from 3434c609719bSwdenk board_init(). Currently key_pressed() is a dummy 3435c609719bSwdenk function, returning 1 and thus enabling modem 3436c609719bSwdenk initialization. 3437c609719bSwdenk 3438c609719bSwdenk If there are no modem init strings in the 3439c609719bSwdenk environment, U-Boot proceed to autoboot; the 3440c609719bSwdenk previous output (banner, info printfs) will be 344111ccc33fSMarcel Ziswiler suppressed, though. 3442c609719bSwdenk 3443c609719bSwdenk See also: doc/README.Modem 3444c609719bSwdenk 34459660e442SHelmut RaigerBoard initialization settings: 34469660e442SHelmut Raiger------------------------------ 34479660e442SHelmut Raiger 34489660e442SHelmut RaigerDuring Initialization u-boot calls a number of board specific functions 34499660e442SHelmut Raigerto allow the preparation of board specific prerequisites, e.g. pin setup 34509660e442SHelmut Raigerbefore drivers are initialized. To enable these callbacks the 34519660e442SHelmut Raigerfollowing configuration macros have to be defined. Currently this is 34529660e442SHelmut Raigerarchitecture specific, so please check arch/your_architecture/lib/board.c 34539660e442SHelmut Raigertypically in board_init_f() and board_init_r(). 34549660e442SHelmut Raiger 34559660e442SHelmut Raiger- CONFIG_BOARD_EARLY_INIT_F: Call board_early_init_f() 34569660e442SHelmut Raiger- CONFIG_BOARD_EARLY_INIT_R: Call board_early_init_r() 34579660e442SHelmut Raiger- CONFIG_BOARD_LATE_INIT: Call board_late_init() 34589660e442SHelmut Raiger- CONFIG_BOARD_POSTCLK_INIT: Call board_postclk_init() 3459c609719bSwdenk 3460c609719bSwdenkConfiguration Settings: 3461c609719bSwdenk----------------------- 3462c609719bSwdenk 34636d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_LONGHELP: Defined when you want long help messages included; 3464c609719bSwdenk undefine this when you're short of memory. 3465c609719bSwdenk 34662fb2604dSPeter Tyser- CONFIG_SYS_HELP_CMD_WIDTH: Defined when you want to override the default 34672fb2604dSPeter Tyser width of the commands listed in the 'help' command output. 34682fb2604dSPeter Tyser 34696d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PROMPT: This is what U-Boot prints on the console to 3470c609719bSwdenk prompt for user input. 3471c609719bSwdenk 34726d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CBSIZE: Buffer size for input from the Console 3473c609719bSwdenk 34746d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PBSIZE: Buffer size for Console output 3475c609719bSwdenk 34766d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAXARGS: max. Number of arguments accepted for monitor commands 3477c609719bSwdenk 34786d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BARGSIZE: Buffer size for Boot Arguments which are passed to 3479c609719bSwdenk the application (usually a Linux kernel) when it is 3480c609719bSwdenk booted 3481c609719bSwdenk 34826d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BAUDRATE_TABLE: 3483c609719bSwdenk List of legal baudrate settings for this board. 3484c609719bSwdenk 34856d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_INFO_QUIET 3486c609719bSwdenk Suppress display of console information at boot. 3487c609719bSwdenk 34886d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_IS_IN_ENV 3489c609719bSwdenk If the board specific function 3490c609719bSwdenk extern int overwrite_console (void); 3491c609719bSwdenk returns 1, the stdin, stderr and stdout are switched to the 3492c609719bSwdenk serial port, else the settings in the environment are used. 3493c609719bSwdenk 34946d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE 3495c609719bSwdenk Enable the call to overwrite_console(). 3496c609719bSwdenk 34976d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_ENV_OVERWRITE 3498c609719bSwdenk Enable overwrite of previous console environment settings. 3499c609719bSwdenk 35006d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEMTEST_START, CONFIG_SYS_MEMTEST_END: 3501c609719bSwdenk Begin and End addresses of the area used by the 3502c609719bSwdenk simple memory test. 3503c609719bSwdenk 35046d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_ALT_MEMTEST: 3505c609719bSwdenk Enable an alternate, more extensive memory test. 3506c609719bSwdenk 35076d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEMTEST_SCRATCH: 35085f535fe1Swdenk Scratch address used by the alternate memory test 35095f535fe1Swdenk You only need to set this if address zero isn't writeable 35105f535fe1Swdenk 35116d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEM_TOP_HIDE (PPC only): 35126d0f6bcfSJean-Christophe PLAGNIOL-VILLARD If CONFIG_SYS_MEM_TOP_HIDE is defined in the board config header, 351314f73ca6SStefan Roese this specified memory area will get subtracted from the top 351411ccc33fSMarcel Ziswiler (end) of RAM and won't get "touched" at all by U-Boot. By 351514f73ca6SStefan Roese fixing up gd->ram_size the Linux kernel should gets passed 351614f73ca6SStefan Roese the now "corrected" memory size and won't touch it either. 351714f73ca6SStefan Roese This should work for arch/ppc and arch/powerpc. Only Linux 35185e12e75dSStefan Roese board ports in arch/powerpc with bootwrapper support that 351914f73ca6SStefan Roese recalculate the memory size from the SDRAM controller setup 35205e12e75dSStefan Roese will have to get fixed in Linux additionally. 352114f73ca6SStefan Roese 352214f73ca6SStefan Roese This option can be used as a workaround for the 440EPx/GRx 352314f73ca6SStefan Roese CHIP 11 errata where the last 256 bytes in SDRAM shouldn't 352414f73ca6SStefan Roese be touched. 352514f73ca6SStefan Roese 352614f73ca6SStefan Roese WARNING: Please make sure that this value is a multiple of 352714f73ca6SStefan Roese the Linux page size (normally 4k). If this is not the case, 352814f73ca6SStefan Roese then the end address of the Linux memory will be located at a 352914f73ca6SStefan Roese non page size aligned address and this could cause major 353014f73ca6SStefan Roese problems. 353114f73ca6SStefan Roese 35326d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_LOADS_BAUD_CHANGE: 3533c609719bSwdenk Enable temporary baudrate change while serial download 3534c609719bSwdenk 35356d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SDRAM_BASE: 3536c609719bSwdenk Physical start address of SDRAM. _Must_ be 0 here. 3537c609719bSwdenk 35386d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MBIO_BASE: 3539c609719bSwdenk Physical start address of Motherboard I/O (if using a 3540c609719bSwdenk Cogent motherboard) 3541c609719bSwdenk 35426d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_BASE: 3543c609719bSwdenk Physical start address of Flash memory. 3544c609719bSwdenk 35456d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MONITOR_BASE: 3546c609719bSwdenk Physical start address of boot monitor code (set by 3547c609719bSwdenk make config files to be same as the text base address 354814d0a02aSWolfgang Denk (CONFIG_SYS_TEXT_BASE) used when linking) - same as 35496d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FLASH_BASE when booting from flash. 3550c609719bSwdenk 35516d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MONITOR_LEN: 35523b57fe0aSwdenk Size of memory reserved for monitor code, used to 35533b57fe0aSwdenk determine _at_compile_time_ (!) if the environment is 35543b57fe0aSwdenk embedded within the U-Boot image, or in a separate 35553b57fe0aSwdenk flash sector. 3556c609719bSwdenk 35576d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MALLOC_LEN: 3558c609719bSwdenk Size of DRAM reserved for malloc() use. 3559c609719bSwdenk 35606d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BOOTM_LEN: 356115940c9aSStefan Roese Normally compressed uImages are limited to an 356215940c9aSStefan Roese uncompressed size of 8 MBytes. If this is not enough, 35636d0f6bcfSJean-Christophe PLAGNIOL-VILLARD you can define CONFIG_SYS_BOOTM_LEN in your board config file 356415940c9aSStefan Roese to adjust this setting to your needs. 3565c609719bSwdenk 35666d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BOOTMAPSZ: 3567c609719bSwdenk Maximum size of memory mapped by the startup code of 3568c609719bSwdenk the Linux kernel; all data that must be processed by 35697d721e34SBartlomiej Sieka the Linux kernel (bd_info, boot arguments, FDT blob if 35707d721e34SBartlomiej Sieka used) must be put below this limit, unless "bootm_low" 35711bce2aebSRobert P. J. Day environment variable is defined and non-zero. In such case 35727d721e34SBartlomiej Sieka all data for the Linux kernel must be between "bootm_low" 3573c3624e6eSGrant Likely and "bootm_low" + CONFIG_SYS_BOOTMAPSZ. The environment 3574c3624e6eSGrant Likely variable "bootm_mapsize" will override the value of 3575c3624e6eSGrant Likely CONFIG_SYS_BOOTMAPSZ. If CONFIG_SYS_BOOTMAPSZ is undefined, 3576c3624e6eSGrant Likely then the value in "bootm_size" will be used instead. 3577c609719bSwdenk 3578fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_RAMDISK_HIGH: 3579fca43cc8SJohn Rigby Enable initrd_high functionality. If defined then the 3580fca43cc8SJohn Rigby initrd_high feature is enabled and the bootm ramdisk subcommand 3581fca43cc8SJohn Rigby is enabled. 3582fca43cc8SJohn Rigby 3583fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_GET_CMDLINE: 3584fca43cc8SJohn Rigby Enables allocating and saving kernel cmdline in space between 3585fca43cc8SJohn Rigby "bootm_low" and "bootm_low" + BOOTMAPSZ. 3586fca43cc8SJohn Rigby 3587fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_GET_KBD: 3588fca43cc8SJohn Rigby Enables allocating and saving a kernel copy of the bd_info in 3589fca43cc8SJohn Rigby space between "bootm_low" and "bootm_low" + BOOTMAPSZ. 3590fca43cc8SJohn Rigby 35916d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAX_FLASH_BANKS: 3592c609719bSwdenk Max number of Flash memory banks 3593c609719bSwdenk 35946d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAX_FLASH_SECT: 3595c609719bSwdenk Max number of sectors on a Flash chip 3596c609719bSwdenk 35976d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_ERASE_TOUT: 3598c609719bSwdenk Timeout for Flash erase operations (in ms) 3599c609719bSwdenk 36006d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_WRITE_TOUT: 3601c609719bSwdenk Timeout for Flash write operations (in ms) 3602c609719bSwdenk 36036d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_LOCK_TOUT 36048564acf9Swdenk Timeout for Flash set sector lock bit operation (in ms) 36058564acf9Swdenk 36066d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_UNLOCK_TOUT 36078564acf9Swdenk Timeout for Flash clear lock bits operation (in ms) 36088564acf9Swdenk 36096d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_PROTECTION 36108564acf9Swdenk If defined, hardware flash sectors protection is used 36118564acf9Swdenk instead of U-Boot software protection. 36128564acf9Swdenk 36136d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DIRECT_FLASH_TFTP: 3614c609719bSwdenk 3615c609719bSwdenk Enable TFTP transfers directly to flash memory; 3616c609719bSwdenk without this option such a download has to be 3617c609719bSwdenk performed in two steps: (1) download to RAM, and (2) 3618c609719bSwdenk copy from RAM to flash. 3619c609719bSwdenk 3620c609719bSwdenk The two-step approach is usually more reliable, since 3621c609719bSwdenk you can check if the download worked before you erase 362211ccc33fSMarcel Ziswiler the flash, but in some situations (when system RAM is 362311ccc33fSMarcel Ziswiler too limited to allow for a temporary copy of the 3624c609719bSwdenk downloaded image) this option may be very useful. 3625c609719bSwdenk 36266d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_CFI: 3627c609719bSwdenk Define if the flash driver uses extra elements in the 36285653fc33Swdenk common flash structure for storing flash geometry. 36295653fc33Swdenk 363000b1883aSJean-Christophe PLAGNIOL-VILLARD- CONFIG_FLASH_CFI_DRIVER 36315653fc33Swdenk This option also enables the building of the cfi_flash driver 36325653fc33Swdenk in the drivers directory 363353cf9435Sstroese 363491809ed5SPiotr Ziecik- CONFIG_FLASH_CFI_MTD 363591809ed5SPiotr Ziecik This option enables the building of the cfi_mtd driver 363691809ed5SPiotr Ziecik in the drivers directory. The driver exports CFI flash 363791809ed5SPiotr Ziecik to the MTD layer. 363891809ed5SPiotr Ziecik 36396d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_USE_BUFFER_WRITE 364096ef831fSGuennadi Liakhovetski Use buffered writes to flash. 364196ef831fSGuennadi Liakhovetski 364296ef831fSGuennadi Liakhovetski- CONFIG_FLASH_SPANSION_S29WS_N 364396ef831fSGuennadi Liakhovetski s29ws-n MirrorBit flash has non-standard addresses for buffered 364496ef831fSGuennadi Liakhovetski write commands. 364596ef831fSGuennadi Liakhovetski 36466d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_QUIET_TEST 36475568e613SStefan Roese If this option is defined, the common CFI flash doesn't 36485568e613SStefan Roese print it's warning upon not recognized FLASH banks. This 36495568e613SStefan Roese is useful, if some of the configured banks are only 36505568e613SStefan Roese optionally available. 36515568e613SStefan Roese 36529a042e9cSJerry Van Baren- CONFIG_FLASH_SHOW_PROGRESS 36539a042e9cSJerry Van Baren If defined (must be an integer), print out countdown 36549a042e9cSJerry Van Baren digits and dots. Recommended value: 45 (9..1) for 80 36559a042e9cSJerry Van Baren column displays, 15 (3..1) for 40 column displays. 36569a042e9cSJerry Van Baren 3657352ef3f1SStefan Roese- CONFIG_FLASH_VERIFY 3658352ef3f1SStefan Roese If defined, the content of the flash (destination) is compared 3659352ef3f1SStefan Roese against the source after the write operation. An error message 3660352ef3f1SStefan Roese will be printed when the contents are not identical. 3661352ef3f1SStefan Roese Please note that this option is useless in nearly all cases, 3662352ef3f1SStefan Roese since such flash programming errors usually are detected earlier 3663352ef3f1SStefan Roese while unprotecting/erasing/programming. Please only enable 3664352ef3f1SStefan Roese this option if you really know what you are doing. 3665352ef3f1SStefan Roese 36666d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_RX_ETH_BUFFER: 366711ccc33fSMarcel Ziswiler Defines the number of Ethernet receive buffers. On some 366811ccc33fSMarcel Ziswiler Ethernet controllers it is recommended to set this value 366953cf9435Sstroese to 8 or even higher (EEPRO100 or 405 EMAC), since all 367053cf9435Sstroese buffers can be full shortly after enabling the interface 367111ccc33fSMarcel Ziswiler on high Ethernet traffic. 367253cf9435Sstroese Defaults to 4 if not defined. 3673c609719bSwdenk 3674ea882bafSWolfgang Denk- CONFIG_ENV_MAX_ENTRIES 3675ea882bafSWolfgang Denk 3676ea882bafSWolfgang Denk Maximum number of entries in the hash table that is used 3677ea882bafSWolfgang Denk internally to store the environment settings. The default 3678ea882bafSWolfgang Denk setting is supposed to be generous and should work in most 3679ea882bafSWolfgang Denk cases. This setting can be used to tune behaviour; see 3680ea882bafSWolfgang Denk lib/hashtable.c for details. 3681ea882bafSWolfgang Denk 36822598090bSJoe Hershberger- CONFIG_ENV_FLAGS_LIST_DEFAULT 36832598090bSJoe Hershberger- CONFIG_ENV_FLAGS_LIST_STATIC 36841bce2aebSRobert P. J. Day Enable validation of the values given to environment variables when 36852598090bSJoe Hershberger calling env set. Variables can be restricted to only decimal, 36862598090bSJoe Hershberger hexadecimal, or boolean. If CONFIG_CMD_NET is also defined, 36872598090bSJoe Hershberger the variables can also be restricted to IP address or MAC address. 36882598090bSJoe Hershberger 36892598090bSJoe Hershberger The format of the list is: 36902598090bSJoe Hershberger type_attribute = [s|d|x|b|i|m] 3691267541f7SJoe Hershberger access_atribute = [a|r|o|c] 3692267541f7SJoe Hershberger attributes = type_attribute[access_atribute] 36932598090bSJoe Hershberger entry = variable_name[:attributes] 36942598090bSJoe Hershberger list = entry[,list] 36952598090bSJoe Hershberger 36962598090bSJoe Hershberger The type attributes are: 36972598090bSJoe Hershberger s - String (default) 36982598090bSJoe Hershberger d - Decimal 36992598090bSJoe Hershberger x - Hexadecimal 37002598090bSJoe Hershberger b - Boolean ([1yYtT|0nNfF]) 37012598090bSJoe Hershberger i - IP address 37022598090bSJoe Hershberger m - MAC address 37032598090bSJoe Hershberger 3704267541f7SJoe Hershberger The access attributes are: 3705267541f7SJoe Hershberger a - Any (default) 3706267541f7SJoe Hershberger r - Read-only 3707267541f7SJoe Hershberger o - Write-once 3708267541f7SJoe Hershberger c - Change-default 3709267541f7SJoe Hershberger 37102598090bSJoe Hershberger - CONFIG_ENV_FLAGS_LIST_DEFAULT 37112598090bSJoe Hershberger Define this to a list (string) to define the ".flags" 37122598090bSJoe Hershberger envirnoment variable in the default or embedded environment. 37132598090bSJoe Hershberger 37142598090bSJoe Hershberger - CONFIG_ENV_FLAGS_LIST_STATIC 37152598090bSJoe Hershberger Define this to a list (string) to define validation that 37162598090bSJoe Hershberger should be done if an entry is not found in the ".flags" 37172598090bSJoe Hershberger environment variable. To override a setting in the static 37182598090bSJoe Hershberger list, simply add an entry for the same variable name to the 37192598090bSJoe Hershberger ".flags" variable. 37202598090bSJoe Hershberger 3721267541f7SJoe Hershberger- CONFIG_ENV_ACCESS_IGNORE_FORCE 3722267541f7SJoe Hershberger If defined, don't allow the -f switch to env set override variable 3723267541f7SJoe Hershberger access flags. 3724267541f7SJoe Hershberger 37255c1a7ea6SSimon Glass- CONFIG_SYS_GENERIC_BOARD 37265c1a7ea6SSimon Glass This selects the architecture-generic board system instead of the 37275c1a7ea6SSimon Glass architecture-specific board files. It is intended to move boards 37285c1a7ea6SSimon Glass to this new framework over time. Defining this will disable the 37295c1a7ea6SSimon Glass arch/foo/lib/board.c file and use common/board_f.c and 37305c1a7ea6SSimon Glass common/board_r.c instead. To use this option your architecture 37315c1a7ea6SSimon Glass must support it (i.e. must define __HAVE_ARCH_GENERIC_BOARD in 37325c1a7ea6SSimon Glass its config.mk file). If you find problems enabling this option on 37335c1a7ea6SSimon Glass your board please report the problem and send patches! 37345c1a7ea6SSimon Glass 3735632efa74SSimon Glass- CONFIG_SYS_SYM_OFFSETS 3736632efa74SSimon Glass This is set by architectures that use offsets for link symbols 3737632efa74SSimon Glass instead of absolute values. So bss_start is obtained using an 3738632efa74SSimon Glass offset _bss_start_ofs from CONFIG_SYS_TEXT_BASE, rather than 3739632efa74SSimon Glass directly. You should not need to touch this setting. 3740632efa74SSimon Glass 37410b1b60c7SLokesh Vutla- CONFIG_OMAP_PLATFORM_RESET_TIME_MAX_USEC (OMAP only) 37420b1b60c7SLokesh Vutla This is set by OMAP boards for the max time that reset should 37430b1b60c7SLokesh Vutla be asserted. See doc/README.omap-reset-time for details on how 37440b1b60c7SLokesh Vutla the value can be calulated on a given board. 3745632efa74SSimon Glass 3746c609719bSwdenkThe following definitions that deal with the placement and management 3747c609719bSwdenkof environment data (variable area); in general, we support the 3748c609719bSwdenkfollowing configurations: 3749c609719bSwdenk 3750c3eb3fe4SMike Frysinger- CONFIG_BUILD_ENVCRC: 3751c3eb3fe4SMike Frysinger 3752c3eb3fe4SMike Frysinger Builds up envcrc with the target environment so that external utils 3753c3eb3fe4SMike Frysinger may easily extract it and embed it in final U-Boot images. 3754c3eb3fe4SMike Frysinger 37555a1aceb0SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_FLASH: 3756c609719bSwdenk 3757c609719bSwdenk Define this if the environment is in flash memory. 3758c609719bSwdenk 3759c609719bSwdenk a) The environment occupies one whole flash sector, which is 3760c609719bSwdenk "embedded" in the text segment with the U-Boot code. This 3761c609719bSwdenk happens usually with "bottom boot sector" or "top boot 3762c609719bSwdenk sector" type flash chips, which have several smaller 3763c609719bSwdenk sectors at the start or the end. For instance, such a 3764c609719bSwdenk layout can have sector sizes of 8, 2x4, 16, Nx32 kB. In 3765c609719bSwdenk such a case you would place the environment in one of the 3766c609719bSwdenk 4 kB sectors - with U-Boot code before and after it. With 3767c609719bSwdenk "top boot sector" type flash chips, you would put the 3768c609719bSwdenk environment in one of the last sectors, leaving a gap 3769c609719bSwdenk between U-Boot and the environment. 3770c609719bSwdenk 37710e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 3772c609719bSwdenk 3773c609719bSwdenk Offset of environment data (variable area) to the 3774c609719bSwdenk beginning of flash memory; for instance, with bottom boot 3775c609719bSwdenk type flash chips the second sector can be used: the offset 3776c609719bSwdenk for this sector is given here. 3777c609719bSwdenk 37786d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_OFFSET is used relative to CONFIG_SYS_FLASH_BASE. 3779c609719bSwdenk 37800e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 3781c609719bSwdenk 3782c609719bSwdenk This is just another way to specify the start address of 3783c609719bSwdenk the flash sector containing the environment (instead of 37840e8d1586SJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_OFFSET). 3785c609719bSwdenk 37860e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SECT_SIZE: 3787c609719bSwdenk 3788c609719bSwdenk Size of the sector containing the environment. 3789c609719bSwdenk 3790c609719bSwdenk 3791c609719bSwdenk b) Sometimes flash chips have few, equal sized, BIG sectors. 3792c609719bSwdenk In such a case you don't want to spend a whole sector for 3793c609719bSwdenk the environment. 3794c609719bSwdenk 37950e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 3796c609719bSwdenk 37975a1aceb0SJean-Christophe PLAGNIOL-VILLARD If you use this in combination with CONFIG_ENV_IS_IN_FLASH 37980e8d1586SJean-Christophe PLAGNIOL-VILLARD and CONFIG_ENV_SECT_SIZE, you can specify to use only a part 3799c609719bSwdenk of this flash sector for the environment. This saves 3800c609719bSwdenk memory for the RAM copy of the environment. 3801c609719bSwdenk 3802c609719bSwdenk It may also save flash memory if you decide to use this 3803c609719bSwdenk when your environment is "embedded" within U-Boot code, 3804c609719bSwdenk since then the remainder of the flash sector could be used 3805c609719bSwdenk for U-Boot code. It should be pointed out that this is 3806c609719bSwdenk STRONGLY DISCOURAGED from a robustness point of view: 3807c609719bSwdenk updating the environment in flash makes it always 3808c609719bSwdenk necessary to erase the WHOLE sector. If something goes 3809c609719bSwdenk wrong before the contents has been restored from a copy in 3810c609719bSwdenk RAM, your target system will be dead. 3811c609719bSwdenk 38120e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR_REDUND 38130e8d1586SJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_SIZE_REDUND 3814c609719bSwdenk 3815c609719bSwdenk These settings describe a second storage area used to hold 381611ccc33fSMarcel Ziswiler a redundant copy of the environment data, so that there is 38173e38691eSwdenk a valid backup copy in case there is a power failure during 3818c609719bSwdenk a "saveenv" operation. 3819c609719bSwdenk 3820c609719bSwdenkBE CAREFUL! Any changes to the flash layout, and some changes to the 3821c609719bSwdenksource code will make it necessary to adapt <board>/u-boot.lds* 3822c609719bSwdenkaccordingly! 3823c609719bSwdenk 3824c609719bSwdenk 38259314cee6SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_NVRAM: 3826c609719bSwdenk 3827c609719bSwdenk Define this if you have some non-volatile memory device 3828c609719bSwdenk (NVRAM, battery buffered SRAM) which you want to use for the 3829c609719bSwdenk environment. 3830c609719bSwdenk 38310e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 38320e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 3833c609719bSwdenk 383411ccc33fSMarcel Ziswiler These two #defines are used to determine the memory area you 3835c609719bSwdenk want to use for environment. It is assumed that this memory 3836c609719bSwdenk can just be read and written to, without any special 3837c609719bSwdenk provision. 3838c609719bSwdenk 3839c609719bSwdenkBE CAREFUL! The first access to the environment happens quite early 3840c609719bSwdenkin U-Boot initalization (when we try to get the setting of for the 384111ccc33fSMarcel Ziswilerconsole baudrate). You *MUST* have mapped your NVRAM area then, or 3842c609719bSwdenkU-Boot will hang. 3843c609719bSwdenk 3844c609719bSwdenkPlease note that even with NVRAM we still use a copy of the 3845c609719bSwdenkenvironment in RAM: we could work on NVRAM directly, but we want to 3846c609719bSwdenkkeep settings there always unmodified except somebody uses "saveenv" 3847c609719bSwdenkto save the current settings. 3848c609719bSwdenk 3849c609719bSwdenk 3850bb1f8b4fSJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_EEPROM: 3851c609719bSwdenk 3852c609719bSwdenk Use this if you have an EEPROM or similar serial access 3853c609719bSwdenk device and a driver for it. 3854c609719bSwdenk 38550e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 38560e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 3857c609719bSwdenk 3858c609719bSwdenk These two #defines specify the offset and size of the 3859c609719bSwdenk environment area within the total memory of your EEPROM. 3860c609719bSwdenk 38616d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR: 3862c609719bSwdenk If defined, specified the chip address of the EEPROM device. 3863c609719bSwdenk The default address is zero. 3864c609719bSwdenk 38656d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_PAGE_WRITE_BITS: 3866c609719bSwdenk If defined, the number of bits used to address bytes in a 3867c609719bSwdenk single page in the EEPROM device. A 64 byte page, for example 3868c609719bSwdenk would require six bits. 3869c609719bSwdenk 38706d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS: 3871c609719bSwdenk If defined, the number of milliseconds to delay between 3872c609719bSwdenk page writes. The default is zero milliseconds. 3873c609719bSwdenk 38746d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR_LEN: 3875c609719bSwdenk The length in bytes of the EEPROM memory array address. Note 3876c609719bSwdenk that this is NOT the chip address length! 3877c609719bSwdenk 38786d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW: 38795cf91d6bSwdenk EEPROM chips that implement "address overflow" are ones 38805cf91d6bSwdenk like Catalyst 24WC04/08/16 which has 9/10/11 bits of 38815cf91d6bSwdenk address and the extra bits end up in the "chip address" bit 38825cf91d6bSwdenk slots. This makes a 24WC08 (1Kbyte) chip look like four 256 38835cf91d6bSwdenk byte chips. 38845cf91d6bSwdenk 38855cf91d6bSwdenk Note that we consider the length of the address field to 38865cf91d6bSwdenk still be one byte because the extra address bits are hidden 38875cf91d6bSwdenk in the chip address. 38885cf91d6bSwdenk 38896d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_SIZE: 3890c609719bSwdenk The size in bytes of the EEPROM device. 3891c609719bSwdenk 3892548738b4SHeiko Schocher - CONFIG_ENV_EEPROM_IS_ON_I2C 3893548738b4SHeiko Schocher define this, if you have I2C and SPI activated, and your 3894548738b4SHeiko Schocher EEPROM, which holds the environment, is on the I2C bus. 3895548738b4SHeiko Schocher 3896548738b4SHeiko Schocher - CONFIG_I2C_ENV_EEPROM_BUS 3897548738b4SHeiko Schocher if you have an Environment on an EEPROM reached over 3898548738b4SHeiko Schocher I2C muxes, you can define here, how to reach this 3899548738b4SHeiko Schocher EEPROM. For example: 3900548738b4SHeiko Schocher 3901ea818dbbSHeiko Schocher #define CONFIG_I2C_ENV_EEPROM_BUS 1 3902548738b4SHeiko Schocher 3903548738b4SHeiko Schocher EEPROM which holds the environment, is reached over 3904548738b4SHeiko Schocher a pca9547 i2c mux with address 0x70, channel 3. 3905c609719bSwdenk 3906057c849cSJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_DATAFLASH: 39075779d8d9Swdenk 39085779d8d9Swdenk Define this if you have a DataFlash memory device which you 39095779d8d9Swdenk want to use for the environment. 39105779d8d9Swdenk 39110e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 39120e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 39130e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 39145779d8d9Swdenk 39155779d8d9Swdenk These three #defines specify the offset and size of the 39165779d8d9Swdenk environment area within the total memory of your DataFlash placed 39175779d8d9Swdenk at the specified address. 39185779d8d9Swdenk 39190a85a9e7SLiu Gang- CONFIG_ENV_IS_IN_REMOTE: 39200a85a9e7SLiu Gang 39210a85a9e7SLiu Gang Define this if you have a remote memory space which you 39220a85a9e7SLiu Gang want to use for the local device's environment. 39230a85a9e7SLiu Gang 39240a85a9e7SLiu Gang - CONFIG_ENV_ADDR: 39250a85a9e7SLiu Gang - CONFIG_ENV_SIZE: 39260a85a9e7SLiu Gang 39270a85a9e7SLiu Gang These two #defines specify the address and size of the 39280a85a9e7SLiu Gang environment area within the remote memory space. The 39290a85a9e7SLiu Gang local device can get the environment from remote memory 3930fc54c7faSLiu Gang space by SRIO or PCIE links. 39310a85a9e7SLiu Gang 39320a85a9e7SLiu GangBE CAREFUL! For some special cases, the local device can not use 39330a85a9e7SLiu Gang"saveenv" command. For example, the local device will get the 3934fc54c7faSLiu Gangenvironment stored in a remote NOR flash by SRIO or PCIE link, 3935fc54c7faSLiu Gangbut it can not erase, write this NOR flash by SRIO or PCIE interface. 39360a85a9e7SLiu Gang 393751bfee19SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_NAND: 393813a5695bSwdenk 393913a5695bSwdenk Define this if you have a NAND device which you want to use 394013a5695bSwdenk for the environment. 394113a5695bSwdenk 39420e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 39430e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 394413a5695bSwdenk 394513a5695bSwdenk These two #defines specify the offset and size of the environment 3946fdd813deSScott Wood area within the first NAND device. CONFIG_ENV_OFFSET must be 3947fdd813deSScott Wood aligned to an erase block boundary. 39485779d8d9Swdenk 3949fdd813deSScott Wood - CONFIG_ENV_OFFSET_REDUND (optional): 3950e443c944SMarkus Klotzbuecher 39510e8d1586SJean-Christophe PLAGNIOL-VILLARD This setting describes a second storage area of CONFIG_ENV_SIZE 3952fdd813deSScott Wood size used to hold a redundant copy of the environment data, so 3953fdd813deSScott Wood that there is a valid backup copy in case there is a power failure 3954fdd813deSScott Wood during a "saveenv" operation. CONFIG_ENV_OFFSET_RENDUND must be 3955fdd813deSScott Wood aligned to an erase block boundary. 3956e443c944SMarkus Klotzbuecher 3957fdd813deSScott Wood - CONFIG_ENV_RANGE (optional): 3958fdd813deSScott Wood 3959fdd813deSScott Wood Specifies the length of the region in which the environment 3960fdd813deSScott Wood can be written. This should be a multiple of the NAND device's 3961fdd813deSScott Wood block size. Specifying a range with more erase blocks than 3962fdd813deSScott Wood are needed to hold CONFIG_ENV_SIZE allows bad blocks within 3963fdd813deSScott Wood the range to be avoided. 3964fdd813deSScott Wood 3965fdd813deSScott Wood - CONFIG_ENV_OFFSET_OOB (optional): 3966fdd813deSScott Wood 3967fdd813deSScott Wood Enables support for dynamically retrieving the offset of the 3968fdd813deSScott Wood environment from block zero's out-of-band data. The 3969fdd813deSScott Wood "nand env.oob" command can be used to record this offset. 3970fdd813deSScott Wood Currently, CONFIG_ENV_OFFSET_REDUND is not supported when 3971fdd813deSScott Wood using CONFIG_ENV_OFFSET_OOB. 3972e443c944SMarkus Klotzbuecher 3973b74ab737SGuennadi Liakhovetski- CONFIG_NAND_ENV_DST 3974b74ab737SGuennadi Liakhovetski 3975b74ab737SGuennadi Liakhovetski Defines address in RAM to which the nand_spl code should copy the 3976b74ab737SGuennadi Liakhovetski environment. If redundant environment is used, it will be copied to 3977b74ab737SGuennadi Liakhovetski CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE. 3978b74ab737SGuennadi Liakhovetski 39792b74433fSJoe Hershberger- CONFIG_ENV_IS_IN_UBI: 39802b74433fSJoe Hershberger 39812b74433fSJoe Hershberger Define this if you have an UBI volume that you want to use for the 39822b74433fSJoe Hershberger environment. This has the benefit of wear-leveling the environment 39832b74433fSJoe Hershberger accesses, which is important on NAND. 39842b74433fSJoe Hershberger 39852b74433fSJoe Hershberger - CONFIG_ENV_UBI_PART: 39862b74433fSJoe Hershberger 39872b74433fSJoe Hershberger Define this to a string that is the mtd partition containing the UBI. 39882b74433fSJoe Hershberger 39892b74433fSJoe Hershberger - CONFIG_ENV_UBI_VOLUME: 39902b74433fSJoe Hershberger 39912b74433fSJoe Hershberger Define this to the name of the volume that you want to store the 39922b74433fSJoe Hershberger environment in. 39932b74433fSJoe Hershberger 3994785881f7SJoe Hershberger - CONFIG_ENV_UBI_VOLUME_REDUND: 3995785881f7SJoe Hershberger 3996785881f7SJoe Hershberger Define this to the name of another volume to store a second copy of 3997785881f7SJoe Hershberger the environment in. This will enable redundant environments in UBI. 3998785881f7SJoe Hershberger It is assumed that both volumes are in the same MTD partition. 3999785881f7SJoe Hershberger 40002b74433fSJoe Hershberger - CONFIG_UBI_SILENCE_MSG 40012b74433fSJoe Hershberger - CONFIG_UBIFS_SILENCE_MSG 40022b74433fSJoe Hershberger 40032b74433fSJoe Hershberger You will probably want to define these to avoid a really noisy system 40042b74433fSJoe Hershberger when storing the env in UBI. 40052b74433fSJoe Hershberger 400606e4ae5fSStephen Warren- CONFIG_ENV_IS_IN_MMC: 400706e4ae5fSStephen Warren 400806e4ae5fSStephen Warren Define this if you have an MMC device which you want to use for the 400906e4ae5fSStephen Warren environment. 401006e4ae5fSStephen Warren 401106e4ae5fSStephen Warren - CONFIG_SYS_MMC_ENV_DEV: 401206e4ae5fSStephen Warren 401306e4ae5fSStephen Warren Specifies which MMC device the environment is stored in. 401406e4ae5fSStephen Warren 401506e4ae5fSStephen Warren - CONFIG_SYS_MMC_ENV_PART (optional): 401606e4ae5fSStephen Warren 401706e4ae5fSStephen Warren Specifies which MMC partition the environment is stored in. If not 401806e4ae5fSStephen Warren set, defaults to partition 0, the user area. Common values might be 401906e4ae5fSStephen Warren 1 (first MMC boot partition), 2 (second MMC boot partition). 402006e4ae5fSStephen Warren 402106e4ae5fSStephen Warren - CONFIG_ENV_OFFSET: 402206e4ae5fSStephen Warren - CONFIG_ENV_SIZE: 402306e4ae5fSStephen Warren 402406e4ae5fSStephen Warren These two #defines specify the offset and size of the environment 402506e4ae5fSStephen Warren area within the specified MMC device. 402606e4ae5fSStephen Warren 40275c088ee8SStephen Warren If offset is positive (the usual case), it is treated as relative to 40285c088ee8SStephen Warren the start of the MMC partition. If offset is negative, it is treated 40295c088ee8SStephen Warren as relative to the end of the MMC partition. This can be useful if 40305c088ee8SStephen Warren your board may be fitted with different MMC devices, which have 40315c088ee8SStephen Warren different sizes for the MMC partitions, and you always want the 40325c088ee8SStephen Warren environment placed at the very end of the partition, to leave the 40335c088ee8SStephen Warren maximum possible space before it, to store other data. 40345c088ee8SStephen Warren 403506e4ae5fSStephen Warren These two values are in units of bytes, but must be aligned to an 403606e4ae5fSStephen Warren MMC sector boundary. 403706e4ae5fSStephen Warren 403806e4ae5fSStephen Warren - CONFIG_ENV_OFFSET_REDUND (optional): 403906e4ae5fSStephen Warren 404006e4ae5fSStephen Warren Specifies a second storage area, of CONFIG_ENV_SIZE size, used to 404106e4ae5fSStephen Warren hold a redundant copy of the environment data. This provides a 404206e4ae5fSStephen Warren valid backup copy in case the other copy is corrupted, e.g. due 404306e4ae5fSStephen Warren to a power failure during a "saveenv" operation. 404406e4ae5fSStephen Warren 40455c088ee8SStephen Warren This value may also be positive or negative; this is handled in the 40465c088ee8SStephen Warren same way as CONFIG_ENV_OFFSET. 40475c088ee8SStephen Warren 404806e4ae5fSStephen Warren This value is also in units of bytes, but must also be aligned to 404906e4ae5fSStephen Warren an MMC sector boundary. 405006e4ae5fSStephen Warren 405106e4ae5fSStephen Warren - CONFIG_ENV_SIZE_REDUND (optional): 405206e4ae5fSStephen Warren 405306e4ae5fSStephen Warren This value need not be set, even when CONFIG_ENV_OFFSET_REDUND is 405406e4ae5fSStephen Warren set. If this value is set, it must be set to the same value as 405506e4ae5fSStephen Warren CONFIG_ENV_SIZE. 405606e4ae5fSStephen Warren 40576d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPI_INIT_OFFSET 4058c609719bSwdenk 4059c609719bSwdenk Defines offset to the initial SPI buffer area in DPRAM. The 4060c609719bSwdenk area is used at an early stage (ROM part) if the environment 4061c609719bSwdenk is configured to reside in the SPI EEPROM: We need a 520 byte 4062c609719bSwdenk scratch DPRAM area. It is used between the two initialization 4063c609719bSwdenk calls (spi_init_f() and spi_init_r()). A value of 0xB00 seems 4064c609719bSwdenk to be a good choice since it makes it far enough from the 4065c609719bSwdenk start of the data area as well as from the stack pointer. 4066c609719bSwdenk 4067e881cb56SBruce AdlerPlease note that the environment is read-only until the monitor 4068c609719bSwdenkhas been relocated to RAM and a RAM copy of the environment has been 4069cdb74977SWolfgang Denkcreated; also, when using EEPROM you will have to use getenv_f() 4070c609719bSwdenkuntil then to read environment variables. 4071c609719bSwdenk 407285ec0bccSwdenkThe environment is protected by a CRC32 checksum. Before the monitor 407385ec0bccSwdenkis relocated into RAM, as a result of a bad CRC you will be working 407485ec0bccSwdenkwith the compiled-in default environment - *silently*!!! [This is 407585ec0bccSwdenknecessary, because the first environment variable we need is the 407685ec0bccSwdenk"baudrate" setting for the console - if we have a bad CRC, we don't 407785ec0bccSwdenkhave any device yet where we could complain.] 4078c609719bSwdenk 4079c609719bSwdenkNote: once the monitor has been relocated, then it will complain if 4080c609719bSwdenkthe default environment is used; a new CRC is computed as soon as you 408185ec0bccSwdenkuse the "saveenv" command to store a valid environment. 4082c609719bSwdenk 40836d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FAULT_ECHO_LINK_DOWN: 4084fc3e2165Swdenk Echo the inverted Ethernet link state to the fault LED. 4085fc3e2165Swdenk 40866d0f6bcfSJean-Christophe PLAGNIOL-VILLARD Note: If this option is active, then CONFIG_SYS_FAULT_MII_ADDR 4087fc3e2165Swdenk also needs to be defined. 4088fc3e2165Swdenk 40896d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FAULT_MII_ADDR: 4090fc3e2165Swdenk MII address of the PHY to check for the Ethernet link state. 4091c609719bSwdenk 4092f5675aa5SRon Madrid- CONFIG_NS16550_MIN_FUNCTIONS: 4093f5675aa5SRon Madrid Define this if you desire to only have use of the NS16550_init 4094f5675aa5SRon Madrid and NS16550_putc functions for the serial driver located at 4095f5675aa5SRon Madrid drivers/serial/ns16550.c. This option is useful for saving 4096f5675aa5SRon Madrid space for already greatly restricted images, including but not 4097f5675aa5SRon Madrid limited to NAND_SPL configurations. 4098f5675aa5SRon Madrid 4099b2b92f53SSimon Glass- CONFIG_DISPLAY_BOARDINFO 4100b2b92f53SSimon Glass Display information about the board that U-Boot is running on 4101b2b92f53SSimon Glass when U-Boot starts up. The board function checkboard() is called 4102b2b92f53SSimon Glass to do this. 4103b2b92f53SSimon Glass 4104e2e3e2b1SSimon Glass- CONFIG_DISPLAY_BOARDINFO_LATE 4105e2e3e2b1SSimon Glass Similar to the previous option, but display this information 4106e2e3e2b1SSimon Glass later, once stdio is running and output goes to the LCD, if 4107e2e3e2b1SSimon Glass present. 4108e2e3e2b1SSimon Glass 4109c609719bSwdenkLow Level (hardware related) configuration options: 4110dc7c9a1aSwdenk--------------------------------------------------- 4111c609719bSwdenk 41126d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CACHELINE_SIZE: 4113c609719bSwdenk Cache Line Size of the CPU. 4114c609719bSwdenk 41156d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DEFAULT_IMMR: 4116c609719bSwdenk Default address of the IMMR after system reset. 41172535d602Swdenk 41182535d602Swdenk Needed on some 8260 systems (MPC8260ADS, PQ2FADS-ZU, 41192535d602Swdenk and RPXsuper) to be able to adjust the position of 41202535d602Swdenk the IMMR register after a reset. 4121c609719bSwdenk 4122e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_DEFAULT: 4123e46fedfeSTimur Tabi Default (power-on reset) physical address of CCSR on Freescale 4124e46fedfeSTimur Tabi PowerPC SOCs. 4125e46fedfeSTimur Tabi 4126e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR: 4127e46fedfeSTimur Tabi Virtual address of CCSR. On a 32-bit build, this is typically 4128e46fedfeSTimur Tabi the same value as CONFIG_SYS_CCSRBAR_DEFAULT. 4129e46fedfeSTimur Tabi 4130e46fedfeSTimur Tabi CONFIG_SYS_DEFAULT_IMMR must also be set to this value, 4131e46fedfeSTimur Tabi for cross-platform code that uses that macro instead. 4132e46fedfeSTimur Tabi 4133e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS: 4134e46fedfeSTimur Tabi Physical address of CCSR. CCSR can be relocated to a new 4135e46fedfeSTimur Tabi physical address, if desired. In this case, this macro should 4136e46fedfeSTimur Tabi be set to that address. Otherwise, it should be set to the 4137e46fedfeSTimur Tabi same value as CONFIG_SYS_CCSRBAR_DEFAULT. For example, CCSR 4138e46fedfeSTimur Tabi is typically relocated on 36-bit builds. It is recommended 4139e46fedfeSTimur Tabi that this macro be defined via the _HIGH and _LOW macros: 4140e46fedfeSTimur Tabi 4141e46fedfeSTimur Tabi #define CONFIG_SYS_CCSRBAR_PHYS ((CONFIG_SYS_CCSRBAR_PHYS_HIGH 4142e46fedfeSTimur Tabi * 1ull) << 32 | CONFIG_SYS_CCSRBAR_PHYS_LOW) 4143e46fedfeSTimur Tabi 4144e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS_HIGH: 4145e46fedfeSTimur Tabi Bits 33-36 of CONFIG_SYS_CCSRBAR_PHYS. This value is typically 4146e46fedfeSTimur Tabi either 0 (32-bit build) or 0xF (36-bit build). This macro is 4147e46fedfeSTimur Tabi used in assembly code, so it must not contain typecasts or 4148e46fedfeSTimur Tabi integer size suffixes (e.g. "ULL"). 4149e46fedfeSTimur Tabi 4150e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS_LOW: 4151e46fedfeSTimur Tabi Lower 32-bits of CONFIG_SYS_CCSRBAR_PHYS. This macro is 4152e46fedfeSTimur Tabi used in assembly code, so it must not contain typecasts or 4153e46fedfeSTimur Tabi integer size suffixes (e.g. "ULL"). 4154e46fedfeSTimur Tabi 4155e46fedfeSTimur Tabi- CONFIG_SYS_CCSR_DO_NOT_RELOCATE: 4156e46fedfeSTimur Tabi If this macro is defined, then CONFIG_SYS_CCSRBAR_PHYS will be 4157e46fedfeSTimur Tabi forced to a value that ensures that CCSR is not relocated. 4158e46fedfeSTimur Tabi 41597f6c2cbcSwdenk- Floppy Disk Support: 41606d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FDC_DRIVE_NUMBER 41617f6c2cbcSwdenk 41627f6c2cbcSwdenk the default drive number (default value 0) 41637f6c2cbcSwdenk 41646d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_ISA_IO_STRIDE 41657f6c2cbcSwdenk 416611ccc33fSMarcel Ziswiler defines the spacing between FDC chipset registers 41677f6c2cbcSwdenk (default value 1) 41687f6c2cbcSwdenk 41696d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_ISA_IO_OFFSET 41707f6c2cbcSwdenk 41717f6c2cbcSwdenk defines the offset of register from address. It 41727f6c2cbcSwdenk depends on which part of the data bus is connected to 417311ccc33fSMarcel Ziswiler the FDC chipset. (default value 0) 41747f6c2cbcSwdenk 41756d0f6bcfSJean-Christophe PLAGNIOL-VILLARD If CONFIG_SYS_ISA_IO_STRIDE CONFIG_SYS_ISA_IO_OFFSET and 41766d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FDC_DRIVE_NUMBER are undefined, they take their 41777f6c2cbcSwdenk default value. 41787f6c2cbcSwdenk 41796d0f6bcfSJean-Christophe PLAGNIOL-VILLARD if CONFIG_SYS_FDC_HW_INIT is defined, then the function 41807f6c2cbcSwdenk fdc_hw_init() is called at the beginning of the FDC 41817f6c2cbcSwdenk setup. fdc_hw_init() must be provided by the board 41827f6c2cbcSwdenk source code. It is used to make hardware dependant 41837f6c2cbcSwdenk initializations. 41847f6c2cbcSwdenk 41850abddf82SMacpaul Lin- CONFIG_IDE_AHB: 41860abddf82SMacpaul Lin Most IDE controllers were designed to be connected with PCI 41870abddf82SMacpaul Lin interface. Only few of them were designed for AHB interface. 41880abddf82SMacpaul Lin When software is doing ATA command and data transfer to 41890abddf82SMacpaul Lin IDE devices through IDE-AHB controller, some additional 41900abddf82SMacpaul Lin registers accessing to these kind of IDE-AHB controller 41910abddf82SMacpaul Lin is requierd. 41920abddf82SMacpaul Lin 41936d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_IMMR: Physical address of the Internal Memory. 419425d6712aSwdenk DO NOT CHANGE unless you know exactly what you're 419525d6712aSwdenk doing! (11-4) [MPC8xx/82xx systems only] 4196c609719bSwdenk 41976d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_INIT_RAM_ADDR: 4198c609719bSwdenk 41997152b1d0Swdenk Start address of memory area that can be used for 4200c609719bSwdenk initial data and stack; please note that this must be 4201c609719bSwdenk writable memory that is working WITHOUT special 4202c609719bSwdenk initialization, i. e. you CANNOT use normal RAM which 4203c609719bSwdenk will become available only after programming the 4204c609719bSwdenk memory controller and running certain initialization 4205c609719bSwdenk sequences. 4206c609719bSwdenk 4207c609719bSwdenk U-Boot uses the following memory types: 4208c609719bSwdenk - MPC8xx and MPC8260: IMMR (internal memory of the CPU) 4209c609719bSwdenk - MPC824X: data cache 4210c609719bSwdenk - PPC4xx: data cache 4211c609719bSwdenk 42126d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_GBL_DATA_OFFSET: 4213c609719bSwdenk 4214c609719bSwdenk Offset of the initial data structure in the memory 42156d0f6bcfSJean-Christophe PLAGNIOL-VILLARD area defined by CONFIG_SYS_INIT_RAM_ADDR. Usually 42166d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_GBL_DATA_OFFSET is chosen such that the initial 4217c609719bSwdenk data is located at the end of the available space 4218553f0982SWolfgang Denk (sometimes written as (CONFIG_SYS_INIT_RAM_SIZE - 42196d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_DATA_SIZE), and the initial stack is just 42206d0f6bcfSJean-Christophe PLAGNIOL-VILLARD below that area (growing from (CONFIG_SYS_INIT_RAM_ADDR + 42216d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_GBL_DATA_OFFSET) downward. 4222c609719bSwdenk 4223c609719bSwdenk Note: 4224c609719bSwdenk On the MPC824X (or other systems that use the data 4225c609719bSwdenk cache for initial memory) the address chosen for 42266d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_RAM_ADDR is basically arbitrary - it must 4227c609719bSwdenk point to an otherwise UNUSED address space between 4228c609719bSwdenk the top of RAM and the start of the PCI space. 4229c609719bSwdenk 42306d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SIUMCR: SIU Module Configuration (11-6) 4231c609719bSwdenk 42326d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SYPCR: System Protection Control (11-9) 4233c609719bSwdenk 42346d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_TBSCR: Time Base Status and Control (11-26) 4235c609719bSwdenk 42366d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PISCR: Periodic Interrupt Status and Control (11-31) 4237c609719bSwdenk 42386d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PLPRCR: PLL, Low-Power, and Reset Control Register (15-30) 4239c609719bSwdenk 42406d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SCCR: System Clock and reset Control Register (15-27) 4241c609719bSwdenk 42426d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_OR_TIMING_SDRAM: 4243c609719bSwdenk SDRAM timing 4244c609719bSwdenk 42456d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAMR_PTA: 4246c609719bSwdenk periodic timer for refresh 4247c609719bSwdenk 42486d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DER: Debug Event Register (37-47) 4249c609719bSwdenk 42506d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- FLASH_BASE0_PRELIM, FLASH_BASE1_PRELIM, CONFIG_SYS_REMAP_OR_AM, 42516d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PRELIM_OR_AM, CONFIG_SYS_OR_TIMING_FLASH, CONFIG_SYS_OR0_REMAP, 42526d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR0_PRELIM, CONFIG_SYS_BR0_PRELIM, CONFIG_SYS_OR1_REMAP, CONFIG_SYS_OR1_PRELIM, 42536d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BR1_PRELIM: 4254c609719bSwdenk Memory Controller Definitions: BR0/1 and OR0/1 (FLASH) 4255c609719bSwdenk 4256c609719bSwdenk- SDRAM_BASE2_PRELIM, SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE, 42576d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR_TIMING_SDRAM, CONFIG_SYS_OR2_PRELIM, CONFIG_SYS_BR2_PRELIM, 42586d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR3_PRELIM, CONFIG_SYS_BR3_PRELIM: 4259c609719bSwdenk Memory Controller Definitions: BR2/3 and OR2/3 (SDRAM) 4260c609719bSwdenk 42616d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAMR_PTA, CONFIG_SYS_MPTPR_2BK_4K, CONFIG_SYS_MPTPR_1BK_4K, CONFIG_SYS_MPTPR_2BK_8K, 42626d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MPTPR_1BK_8K, CONFIG_SYS_MAMR_8COL, CONFIG_SYS_MAMR_9COL: 4263c609719bSwdenk Machine Mode Register and Memory Periodic Timer 4264c609719bSwdenk Prescaler definitions (SDRAM timing) 4265c609719bSwdenk 42666d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_I2C_UCODE_PATCH, CONFIG_SYS_I2C_DPMEM_OFFSET [0x1FC0]: 4267c609719bSwdenk enable I2C microcode relocation patch (MPC8xx); 4268c609719bSwdenk define relocation offset in DPRAM [DSP2] 4269c609719bSwdenk 42706d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SMC_UCODE_PATCH, CONFIG_SYS_SMC_DPMEM_OFFSET [0x1FC0]: 4271b423d055SHeiko Schocher enable SMC microcode relocation patch (MPC8xx); 4272b423d055SHeiko Schocher define relocation offset in DPRAM [SMC1] 4273b423d055SHeiko Schocher 42746d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPI_UCODE_PATCH, CONFIG_SYS_SPI_DPMEM_OFFSET [0x1FC0]: 4275c609719bSwdenk enable SPI microcode relocation patch (MPC8xx); 4276c609719bSwdenk define relocation offset in DPRAM [SCC4] 4277c609719bSwdenk 42786d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_USE_OSCCLK: 4279c609719bSwdenk Use OSCM clock mode on MBX8xx board. Be careful, 4280c609719bSwdenk wrong setting might damage your board. Read 4281c609719bSwdenk doc/README.MBX before setting this variable! 4282c609719bSwdenk 42836d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CPM_POST_WORD_ADDR: (MPC8xx, MPC8260 only) 4284ea909b76Swdenk Offset of the bootmode word in DPRAM used by post 4285ea909b76Swdenk (Power On Self Tests). This definition overrides 4286ea909b76Swdenk #define'd default value in commproc.h resp. 4287ea909b76Swdenk cpm_8260.h. 4288ea909b76Swdenk 42896d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PCI_SLV_MEM_LOCAL, CONFIG_SYS_PCI_SLV_MEM_BUS, CONFIG_SYS_PICMR0_MASK_ATTRIB, 42906d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR0_LOCAL, CONFIG_SYS_PCIMSK0_MASK, CONFIG_SYS_PCI_MSTR1_LOCAL, 42916d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCIMSK1_MASK, CONFIG_SYS_PCI_MSTR_MEM_LOCAL, CONFIG_SYS_PCI_MSTR_MEM_BUS, 42926d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CPU_PCI_MEM_START, CONFIG_SYS_PCI_MSTR_MEM_SIZE, CONFIG_SYS_POCMR0_MASK_ATTRIB, 42936d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_MEMIO_LOCAL, CONFIG_SYS_PCI_MSTR_MEMIO_BUS, CPU_PCI_MEMIO_START, 42946d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_MEMIO_SIZE, CONFIG_SYS_POCMR1_MASK_ATTRIB, CONFIG_SYS_PCI_MSTR_IO_LOCAL, 42956d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_IO_BUS, CONFIG_SYS_CPU_PCI_IO_START, CONFIG_SYS_PCI_MSTR_IO_SIZE, 42966d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_POCMR2_MASK_ATTRIB: (MPC826x only) 4297a47a12beSStefan Roese Overrides the default PCI memory map in arch/powerpc/cpu/mpc8260/pci.c if set. 42985d232d0eSwdenk 42999cacf4fcSDirk Eibach- CONFIG_PCI_DISABLE_PCIE: 43009cacf4fcSDirk Eibach Disable PCI-Express on systems where it is supported but not 43019cacf4fcSDirk Eibach required. 43029cacf4fcSDirk Eibach 430369fd2d3bSAndrew Sharp- CONFIG_PCI_ENUM_ONLY 430469fd2d3bSAndrew Sharp Only scan through and get the devices on the busses. 430569fd2d3bSAndrew Sharp Don't do any setup work, presumably because someone or 430669fd2d3bSAndrew Sharp something has already done it, and we don't need to do it 430769fd2d3bSAndrew Sharp a second time. Useful for platforms that are pre-booted 430869fd2d3bSAndrew Sharp by coreboot or similar. 430969fd2d3bSAndrew Sharp 4310842033e6SGabor Juhos- CONFIG_PCI_INDIRECT_BRIDGE: 4311842033e6SGabor Juhos Enable support for indirect PCI bridges. 4312842033e6SGabor Juhos 4313a09b9b68SKumar Gala- CONFIG_SYS_SRIO: 4314a09b9b68SKumar Gala Chip has SRIO or not 4315a09b9b68SKumar Gala 4316a09b9b68SKumar Gala- CONFIG_SRIO1: 4317a09b9b68SKumar Gala Board has SRIO 1 port available 4318a09b9b68SKumar Gala 4319a09b9b68SKumar Gala- CONFIG_SRIO2: 4320a09b9b68SKumar Gala Board has SRIO 2 port available 4321a09b9b68SKumar Gala 4322c8b28152SLiu Gang- CONFIG_SRIO_PCIE_BOOT_MASTER 4323c8b28152SLiu Gang Board can support master function for Boot from SRIO and PCIE 4324c8b28152SLiu Gang 4325a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_VIRT: 4326a09b9b68SKumar Gala Virtual Address of SRIO port 'n' memory region 4327a09b9b68SKumar Gala 4328a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_PHYS: 4329a09b9b68SKumar Gala Physical Address of SRIO port 'n' memory region 4330a09b9b68SKumar Gala 4331a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_SIZE: 4332a09b9b68SKumar Gala Size of SRIO port 'n' memory region 4333a09b9b68SKumar Gala 433466bd1846SFabio Estevam- CONFIG_SYS_NAND_BUSWIDTH_16BIT 433566bd1846SFabio Estevam Defined to tell the NAND controller that the NAND chip is using 433666bd1846SFabio Estevam a 16 bit bus. 433766bd1846SFabio Estevam Not all NAND drivers use this symbol. 4338a430e916SFabio Estevam Example of drivers that use it: 433966bd1846SFabio Estevam - drivers/mtd/nand/ndfc.c 4340a430e916SFabio Estevam - drivers/mtd/nand/mxc_nand.c 4341eced4626SAlex Waterman 4342eced4626SAlex Waterman- CONFIG_SYS_NDFC_EBC0_CFG 4343eced4626SAlex Waterman Sets the EBC0_CFG register for the NDFC. If not defined 4344eced4626SAlex Waterman a default value will be used. 4345eced4626SAlex Waterman 4346bb99ad6dSBen Warren- CONFIG_SPD_EEPROM 4347218ca724SWolfgang Denk Get DDR timing information from an I2C EEPROM. Common 4348218ca724SWolfgang Denk with pluggable memory modules such as SODIMMs 4349218ca724SWolfgang Denk 4350bb99ad6dSBen Warren SPD_EEPROM_ADDRESS 4351bb99ad6dSBen Warren I2C address of the SPD EEPROM 4352bb99ad6dSBen Warren 43536d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPD_BUS_NUM 4354218ca724SWolfgang Denk If SPD EEPROM is on an I2C bus other than the first 4355218ca724SWolfgang Denk one, specify here. Note that the value must resolve 4356218ca724SWolfgang Denk to something your driver can deal with. 4357bb99ad6dSBen Warren 43581b3e3c4fSYork Sun- CONFIG_SYS_DDR_RAW_TIMING 43591b3e3c4fSYork Sun Get DDR timing information from other than SPD. Common with 43601b3e3c4fSYork Sun soldered DDR chips onboard without SPD. DDR raw timing 43611b3e3c4fSYork Sun parameters are extracted from datasheet and hard-coded into 43621b3e3c4fSYork Sun header files or board specific files. 43631b3e3c4fSYork Sun 43646f5e1dc5SYork Sun- CONFIG_FSL_DDR_INTERACTIVE 43656f5e1dc5SYork Sun Enable interactive DDR debugging. See doc/README.fsl-ddr. 43666f5e1dc5SYork Sun 43676d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_83XX_DDR_USES_CS0 4368218ca724SWolfgang Denk Only for 83xx systems. If specified, then DDR should 4369218ca724SWolfgang Denk be configured using CS0 and CS1 instead of CS2 and CS3. 43702ad6b513STimur Tabi 4371c26e454dSwdenk- CONFIG_ETHER_ON_FEC[12] 4372c26e454dSwdenk Define to enable FEC[12] on a 8xx series processor. 4373c26e454dSwdenk 4374c26e454dSwdenk- CONFIG_FEC[12]_PHY 4375c26e454dSwdenk Define to the hardcoded PHY address which corresponds 43766e592385Swdenk to the given FEC; i. e. 4377c26e454dSwdenk #define CONFIG_FEC1_PHY 4 4378c26e454dSwdenk means that the PHY with address 4 is connected to FEC1 4379c26e454dSwdenk 4380c26e454dSwdenk When set to -1, means to probe for first available. 4381c26e454dSwdenk 4382c26e454dSwdenk- CONFIG_FEC[12]_PHY_NORXERR 4383c26e454dSwdenk The PHY does not have a RXERR line (RMII only). 4384c26e454dSwdenk (so program the FEC to ignore it). 4385c26e454dSwdenk 4386c26e454dSwdenk- CONFIG_RMII 4387c26e454dSwdenk Enable RMII mode for all FECs. 4388c26e454dSwdenk Note that this is a global option, we can't 4389c26e454dSwdenk have one FEC in standard MII mode and another in RMII mode. 4390c26e454dSwdenk 43915cf91d6bSwdenk- CONFIG_CRC32_VERIFY 43925cf91d6bSwdenk Add a verify option to the crc32 command. 43935cf91d6bSwdenk The syntax is: 43945cf91d6bSwdenk 43955cf91d6bSwdenk => crc32 -v <address> <count> <crc32> 43965cf91d6bSwdenk 43975cf91d6bSwdenk Where address/count indicate a memory area 43985cf91d6bSwdenk and crc32 is the correct crc32 which the 43995cf91d6bSwdenk area should have. 44005cf91d6bSwdenk 440156523f12Swdenk- CONFIG_LOOPW 440256523f12Swdenk Add the "loopw" memory command. This only takes effect if 4403602ad3b3SJon Loeliger the memory commands are activated globally (CONFIG_CMD_MEM). 440456523f12Swdenk 44057b466641Sstroese- CONFIG_MX_CYCLIC 44067b466641Sstroese Add the "mdc" and "mwc" memory commands. These are cyclic 44077b466641Sstroese "md/mw" commands. 44087b466641Sstroese Examples: 44097b466641Sstroese 44107b466641Sstroese => mdc.b 10 4 500 44117b466641Sstroese This command will print 4 bytes (10,11,12,13) each 500 ms. 44127b466641Sstroese 44137b466641Sstroese => mwc.l 100 12345678 10 44147b466641Sstroese This command will write 12345678 to address 100 all 10 ms. 44157b466641Sstroese 44167b466641Sstroese This only takes effect if the memory commands are activated 4417602ad3b3SJon Loeliger globally (CONFIG_CMD_MEM). 44187b466641Sstroese 44198aa1a2d1Swdenk- CONFIG_SKIP_LOWLEVEL_INIT 4420afc1ce82SMacpaul Lin [ARM, NDS32, MIPS only] If this variable is defined, then certain 4421e03f3169SWolfgang Denk low level initializations (like setting up the memory 4422e03f3169SWolfgang Denk controller) are omitted and/or U-Boot does not 4423e03f3169SWolfgang Denk relocate itself into RAM. 44248aa1a2d1Swdenk 4425e03f3169SWolfgang Denk Normally this variable MUST NOT be defined. The only 4426e03f3169SWolfgang Denk exception is when U-Boot is loaded (to RAM) by some 4427e03f3169SWolfgang Denk other boot loader or by a debugger which performs 4428e03f3169SWolfgang Denk these initializations itself. 44298aa1a2d1Swdenk 4430401bb30bSAneesh V- CONFIG_SPL_BUILD 4431df81238bSMagnus Lilja Modifies the behaviour of start.S when compiling a loader 4432df81238bSMagnus Lilja that is executed before the actual U-Boot. E.g. when 4433df81238bSMagnus Lilja compiling a NAND SPL. 4434400558b5Swdenk 44353aa29de0SYing Zhang- CONFIG_TPL_BUILD 44363aa29de0SYing Zhang Modifies the behaviour of start.S when compiling a loader 44373aa29de0SYing Zhang that is executed after the SPL and before the actual U-Boot. 44383aa29de0SYing Zhang It is loaded by the SPL. 44393aa29de0SYing Zhang 44405df572f0SYing Zhang- CONFIG_SYS_MPC85XX_NO_RESETVEC 44415df572f0SYing Zhang Only for 85xx systems. If this variable is specified, the section 44425df572f0SYing Zhang .resetvec is not kept and the section .bootpg is placed in the 44435df572f0SYing Zhang previous 4k of the .text section. 44445df572f0SYing Zhang 44454213fc29SSimon Glass- CONFIG_ARCH_MAP_SYSMEM 44464213fc29SSimon Glass Generally U-Boot (and in particular the md command) uses 44474213fc29SSimon Glass effective address. It is therefore not necessary to regard 44484213fc29SSimon Glass U-Boot address as virtual addresses that need to be translated 44494213fc29SSimon Glass to physical addresses. However, sandbox requires this, since 44504213fc29SSimon Glass it maintains its own little RAM buffer which contains all 44514213fc29SSimon Glass addressable memory. This option causes some memory accesses 44524213fc29SSimon Glass to be mapped through map_sysmem() / unmap_sysmem(). 44534213fc29SSimon Glass 4454d8834a13SMatthias Weisser- CONFIG_USE_ARCH_MEMCPY 4455d8834a13SMatthias Weisser CONFIG_USE_ARCH_MEMSET 4456d8834a13SMatthias Weisser If these options are used a optimized version of memcpy/memset will 4457d8834a13SMatthias Weisser be used if available. These functions may be faster under some 4458d8834a13SMatthias Weisser conditions but may increase the binary size. 4459d8834a13SMatthias Weisser 4460588a13f7SSimon Glass- CONFIG_X86_RESET_VECTOR 4461588a13f7SSimon Glass If defined, the x86 reset vector code is included. This is not 4462588a13f7SSimon Glass needed when U-Boot is running from Coreboot. 4463b16f521aSGabe Black 4464fc33705eSMark Jackson- CONFIG_SYS_MPUCLK 4465fc33705eSMark Jackson Defines the MPU clock speed (in MHz). 4466fc33705eSMark Jackson 4467fc33705eSMark Jackson NOTE : currently only supported on AM335x platforms. 44685b5ece9eSGabe Black 446916678eb4SHeiko Schocher- CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC: 447016678eb4SHeiko Schocher Enables the RTC32K OSC on AM33xx based plattforms 447116678eb4SHeiko Schocher 4472f2717b47STimur TabiFreescale QE/FMAN Firmware Support: 4473f2717b47STimur Tabi----------------------------------- 4474f2717b47STimur Tabi 4475f2717b47STimur TabiThe Freescale QUICCEngine (QE) and Frame Manager (FMAN) both support the 4476f2717b47STimur Tabiloading of "firmware", which is encoded in the QE firmware binary format. 4477f2717b47STimur TabiThis firmware often needs to be loaded during U-Boot booting, so macros 4478f2717b47STimur Tabiare used to identify the storage device (NOR flash, SPI, etc) and the address 4479f2717b47STimur Tabiwithin that device. 4480f2717b47STimur Tabi 4481f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_ADDR 4482f2717b47STimur Tabi The address in the storage device where the firmware is located. The 4483f2717b47STimur Tabi meaning of this address depends on which CONFIG_SYS_QE_FW_IN_xxx macro 4484f2717b47STimur Tabi is also specified. 4485f2717b47STimur Tabi 4486f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_LENGTH 4487f2717b47STimur Tabi The maximum possible size of the firmware. The firmware binary format 4488f2717b47STimur Tabi has a field that specifies the actual size of the firmware, but it 4489f2717b47STimur Tabi might not be possible to read any part of the firmware unless some 4490f2717b47STimur Tabi local storage is allocated to hold the entire firmware first. 4491f2717b47STimur Tabi 4492f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_NOR 4493f2717b47STimur Tabi Specifies that QE/FMAN firmware is located in NOR flash, mapped as 4494f2717b47STimur Tabi normal addressable memory via the LBC. CONFIG_SYS_FMAN_FW_ADDR is the 4495f2717b47STimur Tabi virtual address in NOR flash. 4496f2717b47STimur Tabi 4497f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_NAND 4498f2717b47STimur Tabi Specifies that QE/FMAN firmware is located in NAND flash. 4499f2717b47STimur Tabi CONFIG_SYS_FMAN_FW_ADDR is the offset within NAND flash. 4500f2717b47STimur Tabi 4501f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_MMC 4502f2717b47STimur Tabi Specifies that QE/FMAN firmware is located on the primary SD/MMC 4503f2717b47STimur Tabi device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device. 4504f2717b47STimur Tabi 4505f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_SPIFLASH 4506f2717b47STimur Tabi Specifies that QE/FMAN firmware is located on the primary SPI 4507f2717b47STimur Tabi device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device. 4508f2717b47STimur Tabi 4509292dc6c5SLiu Gang- CONFIG_SYS_QE_FMAN_FW_IN_REMOTE 4510292dc6c5SLiu Gang Specifies that QE/FMAN firmware is located in the remote (master) 4511292dc6c5SLiu Gang memory space. CONFIG_SYS_FMAN_FW_ADDR is a virtual address which 4512fc54c7faSLiu Gang can be mapped from slave TLB->slave LAW->slave SRIO or PCIE outbound 4513fc54c7faSLiu Gang window->master inbound window->master LAW->the ucode address in 4514fc54c7faSLiu Gang master's memory space. 4515f2717b47STimur Tabi 4516c609719bSwdenkBuilding the Software: 4517c609719bSwdenk====================== 4518c609719bSwdenk 4519218ca724SWolfgang DenkBuilding U-Boot has been tested in several native build environments 4520218ca724SWolfgang Denkand in many different cross environments. Of course we cannot support 4521218ca724SWolfgang Denkall possibly existing versions of cross development tools in all 4522218ca724SWolfgang Denk(potentially obsolete) versions. In case of tool chain problems we 4523218ca724SWolfgang Denkrecommend to use the ELDK (see http://www.denx.de/wiki/DULG/ELDK) 4524218ca724SWolfgang Denkwhich is extensively used to build and test U-Boot. 4525c609719bSwdenk 4526218ca724SWolfgang DenkIf you are not using a native environment, it is assumed that you 4527218ca724SWolfgang Denkhave GNU cross compiling tools available in your path. In this case, 4528218ca724SWolfgang Denkyou must set the environment variable CROSS_COMPILE in your shell. 4529218ca724SWolfgang DenkNote that no changes to the Makefile or any other source files are 4530218ca724SWolfgang Denknecessary. For example using the ELDK on a 4xx CPU, please enter: 4531c609719bSwdenk 4532218ca724SWolfgang Denk $ CROSS_COMPILE=ppc_4xx- 4533218ca724SWolfgang Denk $ export CROSS_COMPILE 4534c609719bSwdenk 45352f8d396bSPeter TyserNote: If you wish to generate Windows versions of the utilities in 45362f8d396bSPeter Tyser the tools directory you can use the MinGW toolchain 45372f8d396bSPeter Tyser (http://www.mingw.org). Set your HOST tools to the MinGW 45382f8d396bSPeter Tyser toolchain and execute 'make tools'. For example: 45392f8d396bSPeter Tyser 45402f8d396bSPeter Tyser $ make HOSTCC=i586-mingw32msvc-gcc HOSTSTRIP=i586-mingw32msvc-strip tools 45412f8d396bSPeter Tyser 45422f8d396bSPeter Tyser Binaries such as tools/mkimage.exe will be created which can 45432f8d396bSPeter Tyser be executed on computers running Windows. 45442f8d396bSPeter Tyser 4545c609719bSwdenkU-Boot is intended to be simple to build. After installing the 4546c609719bSwdenksources you must configure U-Boot for one specific board type. This 4547c609719bSwdenkis done by typing: 4548c609719bSwdenk 4549c609719bSwdenk make NAME_config 4550c609719bSwdenk 4551218ca724SWolfgang Denkwhere "NAME_config" is the name of one of the existing configu- 45524d675ae6SMichael Jonesrations; see boards.cfg for supported names. 455354387ac9Swdenk 4554c609719bSwdenkNote: for some board special configuration names may exist; check if 4555c609719bSwdenk additional information is available from the board vendor; for 45562729af9dSwdenk instance, the TQM823L systems are available without (standard) 45572729af9dSwdenk or with LCD support. You can select such additional "features" 455811ccc33fSMarcel Ziswiler when choosing the configuration, i. e. 4559c609719bSwdenk 45602729af9dSwdenk make TQM823L_config 45612729af9dSwdenk - will configure for a plain TQM823L, i. e. no LCD support 4562c609719bSwdenk 4563c609719bSwdenk make TQM823L_LCD_config 4564c609719bSwdenk - will configure for a TQM823L with U-Boot console on LCD 4565c609719bSwdenk 4566c609719bSwdenk etc. 4567c609719bSwdenk 4568c609719bSwdenk 4569c609719bSwdenkFinally, type "make all", and you should get some working U-Boot 45707152b1d0Swdenkimages ready for download to / installation on your system: 4571c609719bSwdenk 4572c609719bSwdenk- "u-boot.bin" is a raw binary image 4573c609719bSwdenk- "u-boot" is an image in ELF binary format 4574c609719bSwdenk- "u-boot.srec" is in Motorola S-Record format 4575c609719bSwdenk 4576baf31249SMarian BalakowiczBy default the build is performed locally and the objects are saved 4577baf31249SMarian Balakowiczin the source directory. One of the two methods can be used to change 4578baf31249SMarian Balakowiczthis behavior and build U-Boot to some external directory: 4579baf31249SMarian Balakowicz 4580baf31249SMarian Balakowicz1. Add O= to the make command line invocations: 4581baf31249SMarian Balakowicz 4582baf31249SMarian Balakowicz make O=/tmp/build distclean 4583baf31249SMarian Balakowicz make O=/tmp/build NAME_config 4584baf31249SMarian Balakowicz make O=/tmp/build all 4585baf31249SMarian Balakowicz 4586baf31249SMarian Balakowicz2. Set environment variable BUILD_DIR to point to the desired location: 4587baf31249SMarian Balakowicz 4588baf31249SMarian Balakowicz export BUILD_DIR=/tmp/build 4589baf31249SMarian Balakowicz make distclean 4590baf31249SMarian Balakowicz make NAME_config 4591baf31249SMarian Balakowicz make all 4592baf31249SMarian Balakowicz 4593baf31249SMarian BalakowiczNote that the command line "O=" setting overrides the BUILD_DIR environment 4594baf31249SMarian Balakowiczvariable. 4595baf31249SMarian Balakowicz 4596c609719bSwdenk 4597c609719bSwdenkPlease be aware that the Makefiles assume you are using GNU make, so 4598c609719bSwdenkfor instance on NetBSD you might need to use "gmake" instead of 4599c609719bSwdenknative "make". 4600c609719bSwdenk 4601c609719bSwdenk 4602c609719bSwdenkIf the system board that you have is not listed, then you will need 4603c609719bSwdenkto port U-Boot to your hardware platform. To do this, follow these 4604c609719bSwdenksteps: 4605c609719bSwdenk 4606c609719bSwdenk1. Add a new configuration option for your board to the toplevel 46074d675ae6SMichael Jones "boards.cfg" file, using the existing entries as examples. 46084d675ae6SMichael Jones Follow the instructions there to keep the boards in order. 4609c609719bSwdenk2. Create a new directory to hold your board specific code. Add any 461085ec0bccSwdenk files you need. In your board directory, you will need at least 461185ec0bccSwdenk the "Makefile", a "<board>.c", "flash.c" and "u-boot.lds". 461285ec0bccSwdenk3. Create a new configuration file "include/configs/<board>.h" for 461385ec0bccSwdenk your board 4614c609719bSwdenk3. If you're porting U-Boot to a new CPU, then also create a new 4615c609719bSwdenk directory to hold your CPU specific code. Add any files you need. 461685ec0bccSwdenk4. Run "make <board>_config" with your new name. 4617c609719bSwdenk5. Type "make", and you should get a working "u-boot.srec" file 4618c609719bSwdenk to be installed on your target system. 461985ec0bccSwdenk6. Debug and solve any problems that might arise. 4620c609719bSwdenk [Of course, this last step is much harder than it sounds.] 4621c609719bSwdenk 4622c609719bSwdenk 4623c609719bSwdenkTesting of U-Boot Modifications, Ports to New Hardware, etc.: 4624c609719bSwdenk============================================================== 4625c609719bSwdenk 4626c609719bSwdenkIf you have modified U-Boot sources (for instance added a new board 4627c609719bSwdenkor support for new devices, a new CPU, etc.) you are expected to 4628c609719bSwdenkprovide feedback to the other developers. The feedback normally takes 4629c609719bSwdenkthe form of a "patch", i. e. a context diff against a certain (latest 4630218ca724SWolfgang Denkofficial or latest in the git repository) version of U-Boot sources. 4631c609719bSwdenk 4632c609719bSwdenkBut before you submit such a patch, please verify that your modifi- 4633c609719bSwdenkcation did not break existing code. At least make sure that *ALL* of 4634c609719bSwdenkthe supported boards compile WITHOUT ANY compiler warnings. To do so, 4635c609719bSwdenkjust run the "MAKEALL" script, which will configure and build U-Boot 4636c609719bSwdenkfor ALL supported system. Be warned, this will take a while. You can 46377152b1d0Swdenkselect which (cross) compiler to use by passing a `CROSS_COMPILE' 4638218ca724SWolfgang Denkenvironment variable to the script, i. e. to use the ELDK cross tools 4639218ca724SWolfgang Denkyou can type 4640c609719bSwdenk 4641c609719bSwdenk CROSS_COMPILE=ppc_8xx- MAKEALL 4642c609719bSwdenk 4643c609719bSwdenkor to build on a native PowerPC system you can type 4644c609719bSwdenk 4645c609719bSwdenk CROSS_COMPILE=' ' MAKEALL 4646c609719bSwdenk 4647218ca724SWolfgang DenkWhen using the MAKEALL script, the default behaviour is to build 4648218ca724SWolfgang DenkU-Boot in the source directory. This location can be changed by 4649218ca724SWolfgang Denksetting the BUILD_DIR environment variable. Also, for each target 4650218ca724SWolfgang Denkbuilt, the MAKEALL script saves two log files (<target>.ERR and 4651218ca724SWolfgang Denk<target>.MAKEALL) in the <source dir>/LOG directory. This default 4652218ca724SWolfgang Denklocation can be changed by setting the MAKEALL_LOGDIR environment 4653218ca724SWolfgang Denkvariable. For example: 4654baf31249SMarian Balakowicz 4655baf31249SMarian Balakowicz export BUILD_DIR=/tmp/build 4656baf31249SMarian Balakowicz export MAKEALL_LOGDIR=/tmp/log 4657baf31249SMarian Balakowicz CROSS_COMPILE=ppc_8xx- MAKEALL 4658baf31249SMarian Balakowicz 4659218ca724SWolfgang DenkWith the above settings build objects are saved in the /tmp/build, 4660218ca724SWolfgang Denklog files are saved in the /tmp/log and the source tree remains clean 4661218ca724SWolfgang Denkduring the whole build process. 4662baf31249SMarian Balakowicz 4663baf31249SMarian Balakowicz 4664c609719bSwdenkSee also "U-Boot Porting Guide" below. 4665c609719bSwdenk 4666c609719bSwdenk 4667c609719bSwdenkMonitor Commands - Overview: 4668c609719bSwdenk============================ 4669c609719bSwdenk 4670c609719bSwdenkgo - start application at address 'addr' 4671c609719bSwdenkrun - run commands in an environment variable 4672c609719bSwdenkbootm - boot application image from memory 4673c609719bSwdenkbootp - boot image via network using BootP/TFTP protocol 467444f074c7SMarek Vasutbootz - boot zImage from memory 4675c609719bSwdenktftpboot- boot image via network using TFTP protocol 4676c609719bSwdenk and env variables "ipaddr" and "serverip" 4677c609719bSwdenk (and eventually "gatewayip") 46781fb7cd49SSimon Glasstftpput - upload a file via network using TFTP protocol 4679c609719bSwdenkrarpboot- boot image via network using RARP/TFTP protocol 4680c609719bSwdenkdiskboot- boot from IDE devicebootd - boot default, i.e., run 'bootcmd' 4681c609719bSwdenkloads - load S-Record file over serial line 4682c609719bSwdenkloadb - load binary file over serial line (kermit mode) 4683c609719bSwdenkmd - memory display 4684c609719bSwdenkmm - memory modify (auto-incrementing) 4685c609719bSwdenknm - memory modify (constant address) 4686c609719bSwdenkmw - memory write (fill) 4687c609719bSwdenkcp - memory copy 4688c609719bSwdenkcmp - memory compare 4689c609719bSwdenkcrc32 - checksum calculation 46900f89c54bSPeter Tyseri2c - I2C sub-system 4691c609719bSwdenksspi - SPI utility commands 4692c609719bSwdenkbase - print or set address offset 4693c609719bSwdenkprintenv- print environment variables 4694c609719bSwdenksetenv - set environment variables 4695c609719bSwdenksaveenv - save environment variables to persistent storage 4696c609719bSwdenkprotect - enable or disable FLASH write protection 4697c609719bSwdenkerase - erase FLASH memory 4698c609719bSwdenkflinfo - print FLASH memory information 469910635afaSKarl O. Pincnand - NAND memory operations (see doc/README.nand) 4700c609719bSwdenkbdinfo - print Board Info structure 4701c609719bSwdenkiminfo - print header information for application image 4702c609719bSwdenkconinfo - print console devices and informations 4703c609719bSwdenkide - IDE sub-system 4704c609719bSwdenkloop - infinite loop on address range 470556523f12Swdenkloopw - infinite write loop on address range 4706c609719bSwdenkmtest - simple RAM test 4707c609719bSwdenkicache - enable or disable instruction cache 4708c609719bSwdenkdcache - enable or disable data cache 4709c609719bSwdenkreset - Perform RESET of the CPU 4710c609719bSwdenkecho - echo args to console 4711c609719bSwdenkversion - print monitor version 4712c609719bSwdenkhelp - print online help 4713c609719bSwdenk? - alias for 'help' 4714c609719bSwdenk 4715c609719bSwdenk 4716c609719bSwdenkMonitor Commands - Detailed Description: 4717c609719bSwdenk======================================== 4718c609719bSwdenk 4719c609719bSwdenkTODO. 4720c609719bSwdenk 4721c609719bSwdenkFor now: just type "help <command>". 4722c609719bSwdenk 4723c609719bSwdenk 4724c609719bSwdenkEnvironment Variables: 4725c609719bSwdenk====================== 4726c609719bSwdenk 4727c609719bSwdenkU-Boot supports user configuration using Environment Variables which 4728c609719bSwdenkcan be made persistent by saving to Flash memory. 4729c609719bSwdenk 4730c609719bSwdenkEnvironment Variables are set using "setenv", printed using 4731c609719bSwdenk"printenv", and saved to Flash using "saveenv". Using "setenv" 4732c609719bSwdenkwithout a value can be used to delete a variable from the 4733c609719bSwdenkenvironment. As long as you don't save the environment you are 4734c609719bSwdenkworking with an in-memory copy. In case the Flash area containing the 4735c609719bSwdenkenvironment is erased by accident, a default environment is provided. 4736c609719bSwdenk 4737c96f86eeSWolfgang DenkSome configuration options can be set using Environment Variables. 4738c96f86eeSWolfgang Denk 4739c96f86eeSWolfgang DenkList of environment variables (most likely not complete): 4740c609719bSwdenk 4741c609719bSwdenk baudrate - see CONFIG_BAUDRATE 4742c609719bSwdenk 4743c609719bSwdenk bootdelay - see CONFIG_BOOTDELAY 4744c609719bSwdenk 4745c609719bSwdenk bootcmd - see CONFIG_BOOTCOMMAND 4746c609719bSwdenk 4747c609719bSwdenk bootargs - Boot arguments when booting an RTOS image 4748c609719bSwdenk 4749c609719bSwdenk bootfile - Name of the image to load with TFTP 4750c609719bSwdenk 47517d721e34SBartlomiej Sieka bootm_low - Memory range available for image processing in the bootm 47527d721e34SBartlomiej Sieka command can be restricted. This variable is given as 47537d721e34SBartlomiej Sieka a hexadecimal number and defines lowest address allowed 47547d721e34SBartlomiej Sieka for use by the bootm command. See also "bootm_size" 47557d721e34SBartlomiej Sieka environment variable. Address defined by "bootm_low" is 47567d721e34SBartlomiej Sieka also the base of the initial memory mapping for the Linux 4757c3624e6eSGrant Likely kernel -- see the description of CONFIG_SYS_BOOTMAPSZ and 4758c3624e6eSGrant Likely bootm_mapsize. 4759c3624e6eSGrant Likely 4760c3624e6eSGrant Likely bootm_mapsize - Size of the initial memory mapping for the Linux kernel. 4761c3624e6eSGrant Likely This variable is given as a hexadecimal number and it 4762c3624e6eSGrant Likely defines the size of the memory region starting at base 4763c3624e6eSGrant Likely address bootm_low that is accessible by the Linux kernel 4764c3624e6eSGrant Likely during early boot. If unset, CONFIG_SYS_BOOTMAPSZ is used 4765c3624e6eSGrant Likely as the default value if it is defined, and bootm_size is 4766c3624e6eSGrant Likely used otherwise. 47677d721e34SBartlomiej Sieka 47687d721e34SBartlomiej Sieka bootm_size - Memory range available for image processing in the bootm 47697d721e34SBartlomiej Sieka command can be restricted. This variable is given as 47707d721e34SBartlomiej Sieka a hexadecimal number and defines the size of the region 47717d721e34SBartlomiej Sieka allowed for use by the bootm command. See also "bootm_low" 47727d721e34SBartlomiej Sieka environment variable. 47737d721e34SBartlomiej Sieka 47744bae9090SBartlomiej Sieka updatefile - Location of the software update file on a TFTP server, used 47754bae9090SBartlomiej Sieka by the automatic software update feature. Please refer to 47764bae9090SBartlomiej Sieka documentation in doc/README.update for more details. 47774bae9090SBartlomiej Sieka 4778c609719bSwdenk autoload - if set to "no" (any string beginning with 'n'), 4779c609719bSwdenk "bootp" will just load perform a lookup of the 4780c609719bSwdenk configuration from the BOOTP server, but not try to 4781c609719bSwdenk load any image using TFTP 4782c609719bSwdenk 4783c609719bSwdenk autostart - if set to "yes", an image loaded using the "bootp", 4784c609719bSwdenk "rarpboot", "tftpboot" or "diskboot" commands will 4785c609719bSwdenk be automatically started (by internally calling 4786c609719bSwdenk "bootm") 4787c609719bSwdenk 47884a6fd34bSwdenk If set to "no", a standalone image passed to the 47894a6fd34bSwdenk "bootm" command will be copied to the load address 47904a6fd34bSwdenk (and eventually uncompressed), but NOT be started. 47914a6fd34bSwdenk This can be used to load and uncompress arbitrary 47924a6fd34bSwdenk data. 47934a6fd34bSwdenk 4794a28afca5SDavid A. Long fdt_high - if set this restricts the maximum address that the 4795a28afca5SDavid A. Long flattened device tree will be copied into upon boot. 4796fa34f6b2SShawn Guo For example, if you have a system with 1 GB memory 4797fa34f6b2SShawn Guo at physical address 0x10000000, while Linux kernel 4798fa34f6b2SShawn Guo only recognizes the first 704 MB as low memory, you 4799fa34f6b2SShawn Guo may need to set fdt_high as 0x3C000000 to have the 4800fa34f6b2SShawn Guo device tree blob be copied to the maximum address 4801fa34f6b2SShawn Guo of the 704 MB low memory, so that Linux kernel can 4802fa34f6b2SShawn Guo access it during the boot procedure. 4803fa34f6b2SShawn Guo 4804a28afca5SDavid A. Long If this is set to the special value 0xFFFFFFFF then 4805a28afca5SDavid A. Long the fdt will not be copied at all on boot. For this 4806a28afca5SDavid A. Long to work it must reside in writable memory, have 4807a28afca5SDavid A. Long sufficient padding on the end of it for u-boot to 4808a28afca5SDavid A. Long add the information it needs into it, and the memory 4809a28afca5SDavid A. Long must be accessible by the kernel. 4810a28afca5SDavid A. Long 4811eea63e05SSimon Glass fdtcontroladdr- if set this is the address of the control flattened 4812eea63e05SSimon Glass device tree used by U-Boot when CONFIG_OF_CONTROL is 4813eea63e05SSimon Glass defined. 4814eea63e05SSimon Glass 481517ea1177Swdenk i2cfast - (PPC405GP|PPC405EP only) 481617ea1177Swdenk if set to 'y' configures Linux I2C driver for fast 481717ea1177Swdenk mode (400kHZ). This environment variable is used in 481817ea1177Swdenk initialization code. So, for changes to be effective 481917ea1177Swdenk it must be saved and board must be reset. 482017ea1177Swdenk 4821c609719bSwdenk initrd_high - restrict positioning of initrd images: 4822c609719bSwdenk If this variable is not set, initrd images will be 4823c609719bSwdenk copied to the highest possible address in RAM; this 4824c609719bSwdenk is usually what you want since it allows for 4825c609719bSwdenk maximum initrd size. If for some reason you want to 4826c609719bSwdenk make sure that the initrd image is loaded below the 48276d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BOOTMAPSZ limit, you can set this environment 4828c609719bSwdenk variable to a value of "no" or "off" or "0". 4829c609719bSwdenk Alternatively, you can set it to a maximum upper 4830c609719bSwdenk address to use (U-Boot will still check that it 4831c609719bSwdenk does not overwrite the U-Boot stack and data). 4832c609719bSwdenk 4833c609719bSwdenk For instance, when you have a system with 16 MB 48347152b1d0Swdenk RAM, and want to reserve 4 MB from use by Linux, 4835c609719bSwdenk you can do this by adding "mem=12M" to the value of 4836c609719bSwdenk the "bootargs" variable. However, now you must make 48377152b1d0Swdenk sure that the initrd image is placed in the first 4838c609719bSwdenk 12 MB as well - this can be done with 4839c609719bSwdenk 4840c609719bSwdenk setenv initrd_high 00c00000 4841c609719bSwdenk 484238b99261Swdenk If you set initrd_high to 0xFFFFFFFF, this is an 484338b99261Swdenk indication to U-Boot that all addresses are legal 484438b99261Swdenk for the Linux kernel, including addresses in flash 484538b99261Swdenk memory. In this case U-Boot will NOT COPY the 484638b99261Swdenk ramdisk at all. This may be useful to reduce the 484738b99261Swdenk boot time on your system, but requires that this 484838b99261Swdenk feature is supported by your Linux kernel. 484938b99261Swdenk 4850c609719bSwdenk ipaddr - IP address; needed for tftpboot command 4851c609719bSwdenk 4852c609719bSwdenk loadaddr - Default load address for commands like "bootp", 4853dc7c9a1aSwdenk "rarpboot", "tftpboot", "loadb" or "diskboot" 4854c609719bSwdenk 4855c609719bSwdenk loads_echo - see CONFIG_LOADS_ECHO 4856c609719bSwdenk 4857c609719bSwdenk serverip - TFTP server IP address; needed for tftpboot command 4858c609719bSwdenk 4859c609719bSwdenk bootretry - see CONFIG_BOOT_RETRY_TIME 4860c609719bSwdenk 4861c609719bSwdenk bootdelaykey - see CONFIG_AUTOBOOT_DELAY_STR 4862c609719bSwdenk 4863c609719bSwdenk bootstopkey - see CONFIG_AUTOBOOT_STOP_STR 4864c609719bSwdenk 4865e2a53458SMike Frysinger ethprime - controls which interface is used first. 4866a3d991bdSwdenk 4867e2a53458SMike Frysinger ethact - controls which interface is currently active. 4868e2a53458SMike Frysinger For example you can do the following 4869a3d991bdSwdenk 487048690d80SHeiko Schocher => setenv ethact FEC 487148690d80SHeiko Schocher => ping 192.168.0.1 # traffic sent on FEC 487248690d80SHeiko Schocher => setenv ethact SCC 487348690d80SHeiko Schocher => ping 10.0.0.1 # traffic sent on SCC 4874a3d991bdSwdenk 4875e1692577SMatthias Fuchs ethrotate - When set to "no" U-Boot does not go through all 4876e1692577SMatthias Fuchs available network interfaces. 4877e1692577SMatthias Fuchs It just stays at the currently selected interface. 4878e1692577SMatthias Fuchs 4879a3d991bdSwdenk netretry - When set to "no" each network operation will 4880a3d991bdSwdenk either succeed or fail without retrying. 48816e592385Swdenk When set to "once" the network operation will 48826e592385Swdenk fail when all the available network interfaces 48836e592385Swdenk are tried once without success. 4884a3d991bdSwdenk Useful on scripts which control the retry operation 4885a3d991bdSwdenk themselves. 4886a3d991bdSwdenk 4887b4e2f89dSJean-Christophe PLAGNIOL-VILLARD npe_ucode - set load address for the NPE microcode 4888a1cf027aSJean-Christophe PLAGNIOL-VILLARD 48898d51aacdSSimon Glass silent_linux - If set then linux will be told to boot silently, by 48908d51aacdSSimon Glass changing the console to be empty. If "yes" it will be 48918d51aacdSSimon Glass made silent. If "no" it will not be made silent. If 48928d51aacdSSimon Glass unset, then it will be made silent if the U-Boot console 48938d51aacdSSimon Glass is silent. 48948d51aacdSSimon Glass 489528cb9375SWolfgang Denk tftpsrcport - If this is set, the value is used for TFTP's 4896ecb0ccd9SWolfgang Denk UDP source port. 4897ecb0ccd9SWolfgang Denk 489828cb9375SWolfgang Denk tftpdstport - If this is set, the value is used for TFTP's UDP 489928cb9375SWolfgang Denk destination port instead of the Well Know Port 69. 490028cb9375SWolfgang Denk 4901c96f86eeSWolfgang Denk tftpblocksize - Block size to use for TFTP transfers; if not set, 4902c96f86eeSWolfgang Denk we use the TFTP server's default block size 4903c96f86eeSWolfgang Denk 4904c96f86eeSWolfgang Denk tftptimeout - Retransmission timeout for TFTP packets (in milli- 4905c96f86eeSWolfgang Denk seconds, minimum value is 1000 = 1 second). Defines 4906c96f86eeSWolfgang Denk when a packet is considered to be lost so it has to 4907c96f86eeSWolfgang Denk be retransmitted. The default is 5000 = 5 seconds. 4908c96f86eeSWolfgang Denk Lowering this value may make downloads succeed 4909c96f86eeSWolfgang Denk faster in networks with high packet loss rates or 4910c96f86eeSWolfgang Denk with unreliable TFTP servers. 4911c96f86eeSWolfgang Denk 4912a3d991bdSwdenk vlan - When set to a value < 4095 the traffic over 491311ccc33fSMarcel Ziswiler Ethernet is encapsulated/received over 802.1q 4914a3d991bdSwdenk VLAN tagged frames. 4915c609719bSwdenk 4916dc0b7b0eSJason HobbsThe following image location variables contain the location of images 4917dc0b7b0eSJason Hobbsused in booting. The "Image" column gives the role of the image and is 4918dc0b7b0eSJason Hobbsnot an environment variable name. The other columns are environment 4919dc0b7b0eSJason Hobbsvariable names. "File Name" gives the name of the file on a TFTP 4920dc0b7b0eSJason Hobbsserver, "RAM Address" gives the location in RAM the image will be 4921dc0b7b0eSJason Hobbsloaded to, and "Flash Location" gives the image's address in NOR 4922dc0b7b0eSJason Hobbsflash or offset in NAND flash. 4923dc0b7b0eSJason Hobbs 4924dc0b7b0eSJason Hobbs*Note* - these variables don't have to be defined for all boards, some 4925dc0b7b0eSJason Hobbsboards currenlty use other variables for these purposes, and some 4926dc0b7b0eSJason Hobbsboards use these variables for other purposes. 4927dc0b7b0eSJason Hobbs 4928dc0b7b0eSJason HobbsImage File Name RAM Address Flash Location 4929dc0b7b0eSJason Hobbs----- --------- ----------- -------------- 4930dc0b7b0eSJason Hobbsu-boot u-boot u-boot_addr_r u-boot_addr 4931dc0b7b0eSJason HobbsLinux kernel bootfile kernel_addr_r kernel_addr 4932dc0b7b0eSJason Hobbsdevice tree blob fdtfile fdt_addr_r fdt_addr 4933dc0b7b0eSJason Hobbsramdisk ramdiskfile ramdisk_addr_r ramdisk_addr 4934dc0b7b0eSJason Hobbs 4935c609719bSwdenkThe following environment variables may be used and automatically 4936c609719bSwdenkupdated by the network boot commands ("bootp" and "rarpboot"), 4937c609719bSwdenkdepending the information provided by your boot server: 4938c609719bSwdenk 4939c609719bSwdenk bootfile - see above 4940c609719bSwdenk dnsip - IP address of your Domain Name Server 4941fe389a82Sstroese dnsip2 - IP address of your secondary Domain Name Server 4942c609719bSwdenk gatewayip - IP address of the Gateway (Router) to use 4943c609719bSwdenk hostname - Target hostname 4944c609719bSwdenk ipaddr - see above 4945c609719bSwdenk netmask - Subnet Mask 4946c609719bSwdenk rootpath - Pathname of the root filesystem on the NFS server 4947c609719bSwdenk serverip - see above 4948c609719bSwdenk 4949c609719bSwdenk 4950c609719bSwdenkThere are two special Environment Variables: 4951c609719bSwdenk 4952c609719bSwdenk serial# - contains hardware identification information such 4953c609719bSwdenk as type string and/or serial number 4954c609719bSwdenk ethaddr - Ethernet address 4955c609719bSwdenk 4956c609719bSwdenkThese variables can be set only once (usually during manufacturing of 4957c609719bSwdenkthe board). U-Boot refuses to delete or overwrite these variables 4958c609719bSwdenkonce they have been set once. 4959c609719bSwdenk 4960c609719bSwdenk 4961c1551ea8SstroeseFurther special Environment Variables: 4962c1551ea8Sstroese 4963c1551ea8Sstroese ver - Contains the U-Boot version string as printed 4964c1551ea8Sstroese with the "version" command. This variable is 4965c1551ea8Sstroese readonly (see CONFIG_VERSION_VARIABLE). 4966c1551ea8Sstroese 4967c1551ea8Sstroese 4968c609719bSwdenkPlease note that changes to some configuration parameters may take 4969c609719bSwdenkonly effect after the next boot (yes, that's just like Windoze :-). 4970c609719bSwdenk 4971c609719bSwdenk 4972170ab110SJoe HershbergerCallback functions for environment variables: 4973170ab110SJoe Hershberger--------------------------------------------- 4974170ab110SJoe Hershberger 4975170ab110SJoe HershbergerFor some environment variables, the behavior of u-boot needs to change 4976170ab110SJoe Hershbergerwhen their values are changed. This functionailty allows functions to 4977170ab110SJoe Hershbergerbe associated with arbitrary variables. On creation, overwrite, or 4978170ab110SJoe Hershbergerdeletion, the callback will provide the opportunity for some side 4979170ab110SJoe Hershbergereffect to happen or for the change to be rejected. 4980170ab110SJoe Hershberger 4981170ab110SJoe HershbergerThe callbacks are named and associated with a function using the 4982170ab110SJoe HershbergerU_BOOT_ENV_CALLBACK macro in your board or driver code. 4983170ab110SJoe Hershberger 4984170ab110SJoe HershbergerThese callbacks are associated with variables in one of two ways. The 4985170ab110SJoe Hershbergerstatic list can be added to by defining CONFIG_ENV_CALLBACK_LIST_STATIC 4986170ab110SJoe Hershbergerin the board configuration to a string that defines a list of 4987170ab110SJoe Hershbergerassociations. The list must be in the following format: 4988170ab110SJoe Hershberger 4989170ab110SJoe Hershberger entry = variable_name[:callback_name] 4990170ab110SJoe Hershberger list = entry[,list] 4991170ab110SJoe Hershberger 4992170ab110SJoe HershbergerIf the callback name is not specified, then the callback is deleted. 4993170ab110SJoe HershbergerSpaces are also allowed anywhere in the list. 4994170ab110SJoe Hershberger 4995170ab110SJoe HershbergerCallbacks can also be associated by defining the ".callbacks" variable 4996170ab110SJoe Hershbergerwith the same list format above. Any association in ".callbacks" will 4997170ab110SJoe Hershbergeroverride any association in the static list. You can define 4998170ab110SJoe HershbergerCONFIG_ENV_CALLBACK_LIST_DEFAULT to a list (string) to define the 4999170ab110SJoe Hershberger".callbacks" envirnoment variable in the default or embedded environment. 5000170ab110SJoe Hershberger 5001170ab110SJoe Hershberger 5002f07771ccSwdenkCommand Line Parsing: 5003f07771ccSwdenk===================== 5004f07771ccSwdenk 5005f07771ccSwdenkThere are two different command line parsers available with U-Boot: 50067152b1d0Swdenkthe old "simple" one, and the much more powerful "hush" shell: 5007f07771ccSwdenk 5008f07771ccSwdenkOld, simple command line parser: 5009f07771ccSwdenk-------------------------------- 5010f07771ccSwdenk 5011f07771ccSwdenk- supports environment variables (through setenv / saveenv commands) 5012f07771ccSwdenk- several commands on one line, separated by ';' 5013fe126d8bSWolfgang Denk- variable substitution using "... ${name} ..." syntax 5014f07771ccSwdenk- special characters ('$', ';') can be escaped by prefixing with '\', 5015f07771ccSwdenk for example: 5016fe126d8bSWolfgang Denk setenv bootcmd bootm \${address} 5017f07771ccSwdenk- You can also escape text by enclosing in single apostrophes, for example: 5018f07771ccSwdenk setenv addip 'setenv bootargs $bootargs ip=$ipaddr:$serverip:$gatewayip:$netmask:$hostname::off' 5019f07771ccSwdenk 5020f07771ccSwdenkHush shell: 5021f07771ccSwdenk----------- 5022f07771ccSwdenk 5023f07771ccSwdenk- similar to Bourne shell, with control structures like 5024f07771ccSwdenk if...then...else...fi, for...do...done; while...do...done, 5025f07771ccSwdenk until...do...done, ... 5026f07771ccSwdenk- supports environment ("global") variables (through setenv / saveenv 5027f07771ccSwdenk commands) and local shell variables (through standard shell syntax 5028f07771ccSwdenk "name=value"); only environment variables can be used with "run" 5029f07771ccSwdenk command 5030f07771ccSwdenk 5031f07771ccSwdenkGeneral rules: 5032f07771ccSwdenk-------------- 5033f07771ccSwdenk 5034f07771ccSwdenk(1) If a command line (or an environment variable executed by a "run" 5035f07771ccSwdenk command) contains several commands separated by semicolon, and 5036f07771ccSwdenk one of these commands fails, then the remaining commands will be 5037f07771ccSwdenk executed anyway. 5038f07771ccSwdenk 5039f07771ccSwdenk(2) If you execute several variables with one call to run (i. e. 504011ccc33fSMarcel Ziswiler calling run with a list of variables as arguments), any failing 5041f07771ccSwdenk command will cause "run" to terminate, i. e. the remaining 5042f07771ccSwdenk variables are not executed. 5043f07771ccSwdenk 5044c609719bSwdenkNote for Redundant Ethernet Interfaces: 5045c609719bSwdenk======================================= 5046c609719bSwdenk 504711ccc33fSMarcel ZiswilerSome boards come with redundant Ethernet interfaces; U-Boot supports 5048c609719bSwdenksuch configurations and is capable of automatic selection of a 50497152b1d0Swdenk"working" interface when needed. MAC assignment works as follows: 5050c609719bSwdenk 5051c609719bSwdenkNetwork interfaces are numbered eth0, eth1, eth2, ... Corresponding 5052c609719bSwdenkMAC addresses can be stored in the environment as "ethaddr" (=>eth0), 5053c609719bSwdenk"eth1addr" (=>eth1), "eth2addr", ... 5054c609719bSwdenk 5055c609719bSwdenkIf the network interface stores some valid MAC address (for instance 5056c609719bSwdenkin SROM), this is used as default address if there is NO correspon- 5057c609719bSwdenkding setting in the environment; if the corresponding environment 5058c609719bSwdenkvariable is set, this overrides the settings in the card; that means: 5059c609719bSwdenk 5060c609719bSwdenko If the SROM has a valid MAC address, and there is no address in the 5061c609719bSwdenk environment, the SROM's address is used. 5062c609719bSwdenk 5063c609719bSwdenko If there is no valid address in the SROM, and a definition in the 5064c609719bSwdenk environment exists, then the value from the environment variable is 5065c609719bSwdenk used. 5066c609719bSwdenk 5067c609719bSwdenko If both the SROM and the environment contain a MAC address, and 5068c609719bSwdenk both addresses are the same, this MAC address is used. 5069c609719bSwdenk 5070c609719bSwdenko If both the SROM and the environment contain a MAC address, and the 5071c609719bSwdenk addresses differ, the value from the environment is used and a 5072c609719bSwdenk warning is printed. 5073c609719bSwdenk 5074c609719bSwdenko If neither SROM nor the environment contain a MAC address, an error 5075c609719bSwdenk is raised. 5076c609719bSwdenk 5077ecee9324SBen WarrenIf Ethernet drivers implement the 'write_hwaddr' function, valid MAC addresses 5078ecee9324SBen Warrenwill be programmed into hardware as part of the initialization process. This 5079ecee9324SBen Warrenmay be skipped by setting the appropriate 'ethmacskip' environment variable. 5080ecee9324SBen WarrenThe naming convention is as follows: 5081ecee9324SBen Warren"ethmacskip" (=>eth0), "eth1macskip" (=>eth1) etc. 5082c609719bSwdenk 5083c609719bSwdenkImage Formats: 5084c609719bSwdenk============== 5085c609719bSwdenk 50863310c549SMarian BalakowiczU-Boot is capable of booting (and performing other auxiliary operations on) 50873310c549SMarian Balakowiczimages in two formats: 50883310c549SMarian Balakowicz 50893310c549SMarian BalakowiczNew uImage format (FIT) 50903310c549SMarian Balakowicz----------------------- 50913310c549SMarian Balakowicz 50923310c549SMarian BalakowiczFlexible and powerful format based on Flattened Image Tree -- FIT (similar 50933310c549SMarian Balakowiczto Flattened Device Tree). It allows the use of images with multiple 50943310c549SMarian Balakowiczcomponents (several kernels, ramdisks, etc.), with contents protected by 50953310c549SMarian BalakowiczSHA1, MD5 or CRC32. More details are found in the doc/uImage.FIT directory. 50963310c549SMarian Balakowicz 50973310c549SMarian Balakowicz 50983310c549SMarian BalakowiczOld uImage format 50993310c549SMarian Balakowicz----------------- 51003310c549SMarian Balakowicz 51013310c549SMarian BalakowiczOld image format is based on binary files which can be basically anything, 51023310c549SMarian Balakowiczpreceded by a special header; see the definitions in include/image.h for 51033310c549SMarian Balakowiczdetails; basically, the header defines the following image properties: 5104c609719bSwdenk 5105c609719bSwdenk* Target Operating System (Provisions for OpenBSD, NetBSD, FreeBSD, 5106c609719bSwdenk 4.4BSD, Linux, SVR4, Esix, Solaris, Irix, SCO, Dell, NCR, VxWorks, 5107f5ed9e39SPeter Tyser LynxOS, pSOS, QNX, RTEMS, INTEGRITY; 5108f5ed9e39SPeter Tyser Currently supported: Linux, NetBSD, VxWorks, QNX, RTEMS, LynxOS, 5109f5ed9e39SPeter Tyser INTEGRITY). 51107b64fef3SWolfgang Denk* Target CPU Architecture (Provisions for Alpha, ARM, AVR32, Intel x86, 5111afc1ce82SMacpaul Lin IA64, MIPS, NDS32, Nios II, PowerPC, IBM S390, SuperH, Sparc, Sparc 64 Bit; 5112afc1ce82SMacpaul Lin Currently supported: ARM, AVR32, Intel x86, MIPS, NDS32, Nios II, PowerPC). 5113c29fdfc1Swdenk* Compression Type (uncompressed, gzip, bzip2) 5114c609719bSwdenk* Load Address 5115c609719bSwdenk* Entry Point 5116c609719bSwdenk* Image Name 5117c609719bSwdenk* Image Timestamp 5118c609719bSwdenk 5119c609719bSwdenkThe header is marked by a special Magic Number, and both the header 5120c609719bSwdenkand the data portions of the image are secured against corruption by 5121c609719bSwdenkCRC32 checksums. 5122c609719bSwdenk 5123c609719bSwdenk 5124c609719bSwdenkLinux Support: 5125c609719bSwdenk============== 5126c609719bSwdenk 5127c609719bSwdenkAlthough U-Boot should support any OS or standalone application 51287152b1d0Swdenkeasily, the main focus has always been on Linux during the design of 5129c609719bSwdenkU-Boot. 5130c609719bSwdenk 5131c609719bSwdenkU-Boot includes many features that so far have been part of some 5132c609719bSwdenkspecial "boot loader" code within the Linux kernel. Also, any 5133c609719bSwdenk"initrd" images to be used are no longer part of one big Linux image; 5134c609719bSwdenkinstead, kernel and "initrd" are separate images. This implementation 51357152b1d0Swdenkserves several purposes: 5136c609719bSwdenk 5137c609719bSwdenk- the same features can be used for other OS or standalone 5138c609719bSwdenk applications (for instance: using compressed images to reduce the 5139c609719bSwdenk Flash memory footprint) 5140c609719bSwdenk 5141c609719bSwdenk- it becomes much easier to port new Linux kernel versions because 51427152b1d0Swdenk lots of low-level, hardware dependent stuff are done by U-Boot 5143c609719bSwdenk 5144c609719bSwdenk- the same Linux kernel image can now be used with different "initrd" 5145c609719bSwdenk images; of course this also means that different kernel images can 5146c609719bSwdenk be run with the same "initrd". This makes testing easier (you don't 5147c609719bSwdenk have to build a new "zImage.initrd" Linux image when you just 5148c609719bSwdenk change a file in your "initrd"). Also, a field-upgrade of the 5149c609719bSwdenk software is easier now. 5150c609719bSwdenk 5151c609719bSwdenk 5152c609719bSwdenkLinux HOWTO: 5153c609719bSwdenk============ 5154c609719bSwdenk 5155c609719bSwdenkPorting Linux to U-Boot based systems: 5156c609719bSwdenk--------------------------------------- 5157c609719bSwdenk 5158c609719bSwdenkU-Boot cannot save you from doing all the necessary modifications to 5159c609719bSwdenkconfigure the Linux device drivers for use with your target hardware 5160c609719bSwdenk(no, we don't intend to provide a full virtual machine interface to 5161c609719bSwdenkLinux :-). 5162c609719bSwdenk 5163a47a12beSStefan RoeseBut now you can ignore ALL boot loader code (in arch/powerpc/mbxboot). 5164c609719bSwdenk 5165c609719bSwdenkJust make sure your machine specific header file (for instance 5166c609719bSwdenkinclude/asm-ppc/tqm8xx.h) includes the same definition of the Board 51671dc30693SMarkus HeidelbergInformation structure as we define in include/asm-<arch>/u-boot.h, 51681dc30693SMarkus Heidelbergand make sure that your definition of IMAP_ADDR uses the same value 51696d0f6bcfSJean-Christophe PLAGNIOL-VILLARDas your U-Boot configuration in CONFIG_SYS_IMMR. 5170c609719bSwdenk 5171c609719bSwdenk 5172c609719bSwdenkConfiguring the Linux kernel: 5173c609719bSwdenk----------------------------- 5174c609719bSwdenk 5175c609719bSwdenkNo specific requirements for U-Boot. Make sure you have some root 5176c609719bSwdenkdevice (initial ramdisk, NFS) for your target system. 5177c609719bSwdenk 5178c609719bSwdenk 5179c609719bSwdenkBuilding a Linux Image: 5180c609719bSwdenk----------------------- 5181c609719bSwdenk 518224ee89b9SwdenkWith U-Boot, "normal" build targets like "zImage" or "bzImage" are 518324ee89b9Swdenknot used. If you use recent kernel source, a new build target 518424ee89b9Swdenk"uImage" will exist which automatically builds an image usable by 518524ee89b9SwdenkU-Boot. Most older kernels also have support for a "pImage" target, 518624ee89b9Swdenkwhich was introduced for our predecessor project PPCBoot and uses a 518724ee89b9Swdenk100% compatible format. 5188c609719bSwdenk 5189c609719bSwdenkExample: 5190c609719bSwdenk 5191c609719bSwdenk make TQM850L_config 5192c609719bSwdenk make oldconfig 5193c609719bSwdenk make dep 519424ee89b9Swdenk make uImage 5195c609719bSwdenk 519624ee89b9SwdenkThe "uImage" build target uses a special tool (in 'tools/mkimage') to 519724ee89b9Swdenkencapsulate a compressed Linux kernel image with header information, 519824ee89b9SwdenkCRC32 checksum etc. for use with U-Boot. This is what we are doing: 5199c609719bSwdenk 520024ee89b9Swdenk* build a standard "vmlinux" kernel image (in ELF binary format): 520124ee89b9Swdenk 520224ee89b9Swdenk* convert the kernel into a raw binary image: 520324ee89b9Swdenk 520424ee89b9Swdenk ${CROSS_COMPILE}-objcopy -O binary \ 520524ee89b9Swdenk -R .note -R .comment \ 520624ee89b9Swdenk -S vmlinux linux.bin 520724ee89b9Swdenk 520824ee89b9Swdenk* compress the binary image: 520924ee89b9Swdenk 521024ee89b9Swdenk gzip -9 linux.bin 521124ee89b9Swdenk 521224ee89b9Swdenk* package compressed binary image for U-Boot: 521324ee89b9Swdenk 521424ee89b9Swdenk mkimage -A ppc -O linux -T kernel -C gzip \ 521524ee89b9Swdenk -a 0 -e 0 -n "Linux Kernel Image" \ 521624ee89b9Swdenk -d linux.bin.gz uImage 521724ee89b9Swdenk 521824ee89b9Swdenk 521924ee89b9SwdenkThe "mkimage" tool can also be used to create ramdisk images for use 522024ee89b9Swdenkwith U-Boot, either separated from the Linux kernel image, or 522124ee89b9Swdenkcombined into one file. "mkimage" encapsulates the images with a 64 522224ee89b9Swdenkbyte header containing information about target architecture, 522324ee89b9Swdenkoperating system, image type, compression method, entry points, time 522424ee89b9Swdenkstamp, CRC32 checksums, etc. 522524ee89b9Swdenk 522624ee89b9Swdenk"mkimage" can be called in two ways: to verify existing images and 522724ee89b9Swdenkprint the header information, or to build new images. 5228c609719bSwdenk 5229c609719bSwdenkIn the first form (with "-l" option) mkimage lists the information 5230c609719bSwdenkcontained in the header of an existing U-Boot image; this includes 5231c609719bSwdenkchecksum verification: 5232c609719bSwdenk 5233c609719bSwdenk tools/mkimage -l image 5234c609719bSwdenk -l ==> list image header information 5235c609719bSwdenk 5236c609719bSwdenkThe second form (with "-d" option) is used to build a U-Boot image 5237c609719bSwdenkfrom a "data file" which is used as image payload: 5238c609719bSwdenk 5239c609719bSwdenk tools/mkimage -A arch -O os -T type -C comp -a addr -e ep \ 5240c609719bSwdenk -n name -d data_file image 5241c609719bSwdenk -A ==> set architecture to 'arch' 5242c609719bSwdenk -O ==> set operating system to 'os' 5243c609719bSwdenk -T ==> set image type to 'type' 5244c609719bSwdenk -C ==> set compression type 'comp' 5245c609719bSwdenk -a ==> set load address to 'addr' (hex) 5246c609719bSwdenk -e ==> set entry point to 'ep' (hex) 5247c609719bSwdenk -n ==> set image name to 'name' 5248c609719bSwdenk -d ==> use image data from 'datafile' 5249c609719bSwdenk 525069459791SwdenkRight now, all Linux kernels for PowerPC systems use the same load 525169459791Swdenkaddress (0x00000000), but the entry point address depends on the 525269459791Swdenkkernel version: 5253c609719bSwdenk 5254c609719bSwdenk- 2.2.x kernels have the entry point at 0x0000000C, 525524ee89b9Swdenk- 2.3.x and later kernels have the entry point at 0x00000000. 5256c609719bSwdenk 5257c609719bSwdenkSo a typical call to build a U-Boot image would read: 5258c609719bSwdenk 525924ee89b9Swdenk -> tools/mkimage -n '2.4.4 kernel for TQM850L' \ 526024ee89b9Swdenk > -A ppc -O linux -T kernel -C gzip -a 0 -e 0 \ 5261a47a12beSStefan Roese > -d /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux.gz \ 526224ee89b9Swdenk > examples/uImage.TQM850L 526324ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5264c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5265c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5266c609719bSwdenk Data Size: 335725 Bytes = 327.86 kB = 0.32 MB 5267c609719bSwdenk Load Address: 0x00000000 526824ee89b9Swdenk Entry Point: 0x00000000 5269c609719bSwdenk 5270c609719bSwdenkTo verify the contents of the image (or check for corruption): 5271c609719bSwdenk 527224ee89b9Swdenk -> tools/mkimage -l examples/uImage.TQM850L 527324ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5274c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5275c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5276c609719bSwdenk Data Size: 335725 Bytes = 327.86 kB = 0.32 MB 5277c609719bSwdenk Load Address: 0x00000000 527824ee89b9Swdenk Entry Point: 0x00000000 5279c609719bSwdenk 5280c609719bSwdenkNOTE: for embedded systems where boot time is critical you can trade 5281c609719bSwdenkspeed for memory and install an UNCOMPRESSED image instead: this 5282c609719bSwdenkneeds more space in Flash, but boots much faster since it does not 5283c609719bSwdenkneed to be uncompressed: 5284c609719bSwdenk 5285a47a12beSStefan Roese -> gunzip /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux.gz 528624ee89b9Swdenk -> tools/mkimage -n '2.4.4 kernel for TQM850L' \ 528724ee89b9Swdenk > -A ppc -O linux -T kernel -C none -a 0 -e 0 \ 5288a47a12beSStefan Roese > -d /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux \ 528924ee89b9Swdenk > examples/uImage.TQM850L-uncompressed 529024ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5291c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5292c609719bSwdenk Image Type: PowerPC Linux Kernel Image (uncompressed) 5293c609719bSwdenk Data Size: 792160 Bytes = 773.59 kB = 0.76 MB 5294c609719bSwdenk Load Address: 0x00000000 529524ee89b9Swdenk Entry Point: 0x00000000 5296c609719bSwdenk 5297c609719bSwdenk 5298c609719bSwdenkSimilar you can build U-Boot images from a 'ramdisk.image.gz' file 5299c609719bSwdenkwhen your kernel is intended to use an initial ramdisk: 5300c609719bSwdenk 5301c609719bSwdenk -> tools/mkimage -n 'Simple Ramdisk Image' \ 5302c609719bSwdenk > -A ppc -O linux -T ramdisk -C gzip \ 5303c609719bSwdenk > -d /LinuxPPC/images/SIMPLE-ramdisk.image.gz examples/simple-initrd 5304c609719bSwdenk Image Name: Simple Ramdisk Image 5305c609719bSwdenk Created: Wed Jan 12 14:01:50 2000 5306c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5307c609719bSwdenk Data Size: 566530 Bytes = 553.25 kB = 0.54 MB 5308c609719bSwdenk Load Address: 0x00000000 5309c609719bSwdenk Entry Point: 0x00000000 5310c609719bSwdenk 5311a804b5ceSGuilherme Maciel FerreiraThe "dumpimage" is a tool to disassemble images built by mkimage. Its "-i" 5312a804b5ceSGuilherme Maciel Ferreiraoption performs the converse operation of the mkimage's second form (the "-d" 5313a804b5ceSGuilherme Maciel Ferreiraoption). Given an image built by mkimage, the dumpimage extracts a "data file" 5314a804b5ceSGuilherme Maciel Ferreirafrom the image: 5315a804b5ceSGuilherme Maciel Ferreira 5316a804b5ceSGuilherme Maciel Ferreira tools/dumpimage -i image -p position data_file 5317a804b5ceSGuilherme Maciel Ferreira -i ==> extract from the 'image' a specific 'data_file', \ 5318a804b5ceSGuilherme Maciel Ferreira indexed by 'position' 5319a804b5ceSGuilherme Maciel Ferreira 5320c609719bSwdenk 5321c609719bSwdenkInstalling a Linux Image: 5322c609719bSwdenk------------------------- 5323c609719bSwdenk 5324c609719bSwdenkTo downloading a U-Boot image over the serial (console) interface, 5325c609719bSwdenkyou must convert the image to S-Record format: 5326c609719bSwdenk 5327c609719bSwdenk objcopy -I binary -O srec examples/image examples/image.srec 5328c609719bSwdenk 5329c609719bSwdenkThe 'objcopy' does not understand the information in the U-Boot 5330c609719bSwdenkimage header, so the resulting S-Record file will be relative to 5331c609719bSwdenkaddress 0x00000000. To load it to a given address, you need to 5332c609719bSwdenkspecify the target address as 'offset' parameter with the 'loads' 5333c609719bSwdenkcommand. 5334c609719bSwdenk 5335c609719bSwdenkExample: install the image to address 0x40100000 (which on the 5336c609719bSwdenkTQM8xxL is in the first Flash bank): 5337c609719bSwdenk 5338c609719bSwdenk => erase 40100000 401FFFFF 5339c609719bSwdenk 5340c609719bSwdenk .......... done 5341c609719bSwdenk Erased 8 sectors 5342c609719bSwdenk 5343c609719bSwdenk => loads 40100000 5344c609719bSwdenk ## Ready for S-Record download ... 5345c609719bSwdenk ~>examples/image.srec 5346c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 12 13 ... 5347c609719bSwdenk ... 5348c609719bSwdenk 15989 15990 15991 15992 5349c609719bSwdenk [file transfer complete] 5350c609719bSwdenk [connected] 5351c609719bSwdenk ## Start Addr = 0x00000000 5352c609719bSwdenk 5353c609719bSwdenk 5354c609719bSwdenkYou can check the success of the download using the 'iminfo' command; 5355c609719bSwdenkthis includes a checksum verification so you can be sure no data 5356c609719bSwdenkcorruption happened: 5357c609719bSwdenk 5358c609719bSwdenk => imi 40100000 5359c609719bSwdenk 5360c609719bSwdenk ## Checking Image at 40100000 ... 5361c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5362c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5363c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5364c609719bSwdenk Load Address: 00000000 5365c609719bSwdenk Entry Point: 0000000c 5366c609719bSwdenk Verifying Checksum ... OK 5367c609719bSwdenk 5368c609719bSwdenk 5369c609719bSwdenkBoot Linux: 5370c609719bSwdenk----------- 5371c609719bSwdenk 5372c609719bSwdenkThe "bootm" command is used to boot an application that is stored in 5373c609719bSwdenkmemory (RAM or Flash). In case of a Linux kernel image, the contents 5374c609719bSwdenkof the "bootargs" environment variable is passed to the kernel as 5375c609719bSwdenkparameters. You can check and modify this variable using the 5376c609719bSwdenk"printenv" and "setenv" commands: 5377c609719bSwdenk 5378c609719bSwdenk 5379c609719bSwdenk => printenv bootargs 5380c609719bSwdenk bootargs=root=/dev/ram 5381c609719bSwdenk 5382c609719bSwdenk => setenv bootargs root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5383c609719bSwdenk 5384c609719bSwdenk => printenv bootargs 5385c609719bSwdenk bootargs=root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5386c609719bSwdenk 5387c609719bSwdenk => bootm 40020000 5388c609719bSwdenk ## Booting Linux kernel at 40020000 ... 5389c609719bSwdenk Image Name: 2.2.13 for NFS on TQM850L 5390c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5391c609719bSwdenk Data Size: 381681 Bytes = 372 kB = 0 MB 5392c609719bSwdenk Load Address: 00000000 5393c609719bSwdenk Entry Point: 0000000c 5394c609719bSwdenk Verifying Checksum ... OK 5395c609719bSwdenk Uncompressing Kernel Image ... OK 5396c609719bSwdenk 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 5397c609719bSwdenk Boot arguments: root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5398c609719bSwdenk time_init: decrementer frequency = 187500000/60 5399c609719bSwdenk Calibrating delay loop... 49.77 BogoMIPS 5400c609719bSwdenk Memory: 15208k available (700k kernel code, 444k data, 32k init) [c0000000,c1000000] 5401c609719bSwdenk ... 5402c609719bSwdenk 540311ccc33fSMarcel ZiswilerIf you want to boot a Linux kernel with initial RAM disk, you pass 54047152b1d0Swdenkthe memory addresses of both the kernel and the initrd image (PPBCOOT 5405c609719bSwdenkformat!) to the "bootm" command: 5406c609719bSwdenk 5407c609719bSwdenk => imi 40100000 40200000 5408c609719bSwdenk 5409c609719bSwdenk ## Checking Image at 40100000 ... 5410c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5411c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5412c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5413c609719bSwdenk Load Address: 00000000 5414c609719bSwdenk Entry Point: 0000000c 5415c609719bSwdenk Verifying Checksum ... OK 5416c609719bSwdenk 5417c609719bSwdenk ## Checking Image at 40200000 ... 5418c609719bSwdenk Image Name: Simple Ramdisk Image 5419c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5420c609719bSwdenk Data Size: 566530 Bytes = 553 kB = 0 MB 5421c609719bSwdenk Load Address: 00000000 5422c609719bSwdenk Entry Point: 00000000 5423c609719bSwdenk Verifying Checksum ... OK 5424c609719bSwdenk 5425c609719bSwdenk => bootm 40100000 40200000 5426c609719bSwdenk ## Booting Linux kernel at 40100000 ... 5427c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5428c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5429c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5430c609719bSwdenk Load Address: 00000000 5431c609719bSwdenk Entry Point: 0000000c 5432c609719bSwdenk Verifying Checksum ... OK 5433c609719bSwdenk Uncompressing Kernel Image ... OK 5434c609719bSwdenk ## Loading RAMDisk Image at 40200000 ... 5435c609719bSwdenk Image Name: Simple Ramdisk Image 5436c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5437c609719bSwdenk Data Size: 566530 Bytes = 553 kB = 0 MB 5438c609719bSwdenk Load Address: 00000000 5439c609719bSwdenk Entry Point: 00000000 5440c609719bSwdenk Verifying Checksum ... OK 5441c609719bSwdenk Loading Ramdisk ... OK 5442c609719bSwdenk 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 5443c609719bSwdenk Boot arguments: root=/dev/ram 5444c609719bSwdenk time_init: decrementer frequency = 187500000/60 5445c609719bSwdenk Calibrating delay loop... 49.77 BogoMIPS 5446c609719bSwdenk ... 5447c609719bSwdenk RAMDISK: Compressed image found at block 0 5448c609719bSwdenk VFS: Mounted root (ext2 filesystem). 5449c609719bSwdenk 5450c609719bSwdenk bash# 5451c609719bSwdenk 54520267768eSMatthew McClintockBoot Linux and pass a flat device tree: 54530267768eSMatthew McClintock----------- 54540267768eSMatthew McClintock 54550267768eSMatthew McClintockFirst, U-Boot must be compiled with the appropriate defines. See the section 54560267768eSMatthew McClintocktitled "Linux Kernel Interface" above for a more in depth explanation. The 54570267768eSMatthew McClintockfollowing is an example of how to start a kernel and pass an updated 54580267768eSMatthew McClintockflat device tree: 54590267768eSMatthew McClintock 54600267768eSMatthew McClintock=> print oftaddr 54610267768eSMatthew McClintockoftaddr=0x300000 54620267768eSMatthew McClintock=> print oft 54630267768eSMatthew McClintockoft=oftrees/mpc8540ads.dtb 54640267768eSMatthew McClintock=> tftp $oftaddr $oft 54650267768eSMatthew McClintockSpeed: 1000, full duplex 54660267768eSMatthew McClintockUsing TSEC0 device 54670267768eSMatthew McClintockTFTP from server 192.168.1.1; our IP address is 192.168.1.101 54680267768eSMatthew McClintockFilename 'oftrees/mpc8540ads.dtb'. 54690267768eSMatthew McClintockLoad address: 0x300000 54700267768eSMatthew McClintockLoading: # 54710267768eSMatthew McClintockdone 54720267768eSMatthew McClintockBytes transferred = 4106 (100a hex) 54730267768eSMatthew McClintock=> tftp $loadaddr $bootfile 54740267768eSMatthew McClintockSpeed: 1000, full duplex 54750267768eSMatthew McClintockUsing TSEC0 device 54760267768eSMatthew McClintockTFTP from server 192.168.1.1; our IP address is 192.168.1.2 54770267768eSMatthew McClintockFilename 'uImage'. 54780267768eSMatthew McClintockLoad address: 0x200000 54790267768eSMatthew McClintockLoading:############ 54800267768eSMatthew McClintockdone 54810267768eSMatthew McClintockBytes transferred = 1029407 (fb51f hex) 54820267768eSMatthew McClintock=> print loadaddr 54830267768eSMatthew McClintockloadaddr=200000 54840267768eSMatthew McClintock=> print oftaddr 54850267768eSMatthew McClintockoftaddr=0x300000 54860267768eSMatthew McClintock=> bootm $loadaddr - $oftaddr 54870267768eSMatthew McClintock## Booting image at 00200000 ... 54880267768eSMatthew McClintock Image Name: Linux-2.6.17-dirty 54890267768eSMatthew McClintock Image Type: PowerPC Linux Kernel Image (gzip compressed) 54900267768eSMatthew McClintock Data Size: 1029343 Bytes = 1005.2 kB 54910267768eSMatthew McClintock Load Address: 00000000 54920267768eSMatthew McClintock Entry Point: 00000000 54930267768eSMatthew McClintock Verifying Checksum ... OK 54940267768eSMatthew McClintock Uncompressing Kernel Image ... OK 54950267768eSMatthew McClintockBooting using flat device tree at 0x300000 54960267768eSMatthew McClintockUsing MPC85xx ADS machine description 54970267768eSMatthew McClintockMemory CAM mapping: CAM0=256Mb, CAM1=256Mb, CAM2=0Mb residual: 0Mb 54980267768eSMatthew McClintock[snip] 54990267768eSMatthew McClintock 55000267768eSMatthew McClintock 55016069ff26SwdenkMore About U-Boot Image Types: 55026069ff26Swdenk------------------------------ 55036069ff26Swdenk 55046069ff26SwdenkU-Boot supports the following image types: 55056069ff26Swdenk 55066069ff26Swdenk "Standalone Programs" are directly runnable in the environment 55076069ff26Swdenk provided by U-Boot; it is expected that (if they behave 55086069ff26Swdenk well) you can continue to work in U-Boot after return from 55096069ff26Swdenk the Standalone Program. 55106069ff26Swdenk "OS Kernel Images" are usually images of some Embedded OS which 55116069ff26Swdenk will take over control completely. Usually these programs 55126069ff26Swdenk will install their own set of exception handlers, device 55136069ff26Swdenk drivers, set up the MMU, etc. - this means, that you cannot 55146069ff26Swdenk expect to re-enter U-Boot except by resetting the CPU. 55156069ff26Swdenk "RAMDisk Images" are more or less just data blocks, and their 55166069ff26Swdenk parameters (address, size) are passed to an OS kernel that is 55176069ff26Swdenk being started. 55186069ff26Swdenk "Multi-File Images" contain several images, typically an OS 55196069ff26Swdenk (Linux) kernel image and one or more data images like 55206069ff26Swdenk RAMDisks. This construct is useful for instance when you want 55216069ff26Swdenk to boot over the network using BOOTP etc., where the boot 55226069ff26Swdenk server provides just a single image file, but you want to get 55236069ff26Swdenk for instance an OS kernel and a RAMDisk image. 55246069ff26Swdenk 55256069ff26Swdenk "Multi-File Images" start with a list of image sizes, each 55266069ff26Swdenk image size (in bytes) specified by an "uint32_t" in network 55276069ff26Swdenk byte order. This list is terminated by an "(uint32_t)0". 55286069ff26Swdenk Immediately after the terminating 0 follow the images, one by 55296069ff26Swdenk one, all aligned on "uint32_t" boundaries (size rounded up to 55306069ff26Swdenk a multiple of 4 bytes). 55316069ff26Swdenk 55326069ff26Swdenk "Firmware Images" are binary images containing firmware (like 55336069ff26Swdenk U-Boot or FPGA images) which usually will be programmed to 55346069ff26Swdenk flash memory. 55356069ff26Swdenk 55366069ff26Swdenk "Script files" are command sequences that will be executed by 55376069ff26Swdenk U-Boot's command interpreter; this feature is especially 55386069ff26Swdenk useful when you configure U-Boot to use a real shell (hush) 55396069ff26Swdenk as command interpreter. 55406069ff26Swdenk 554144f074c7SMarek VasutBooting the Linux zImage: 554244f074c7SMarek Vasut------------------------- 554344f074c7SMarek Vasut 554444f074c7SMarek VasutOn some platforms, it's possible to boot Linux zImage. This is done 554544f074c7SMarek Vasutusing the "bootz" command. The syntax of "bootz" command is the same 554644f074c7SMarek Vasutas the syntax of "bootm" command. 554744f074c7SMarek Vasut 55488ac28563STom RiniNote, defining the CONFIG_SUPPORT_RAW_INITRD allows user to supply 5549017e1f3fSMarek Vasutkernel with raw initrd images. The syntax is slightly different, the 5550017e1f3fSMarek Vasutaddress of the initrd must be augmented by it's size, in the following 5551017e1f3fSMarek Vasutformat: "<initrd addres>:<initrd size>". 5552017e1f3fSMarek Vasut 5553c609719bSwdenk 5554c609719bSwdenkStandalone HOWTO: 5555c609719bSwdenk================= 5556c609719bSwdenk 5557c609719bSwdenkOne of the features of U-Boot is that you can dynamically load and 5558c609719bSwdenkrun "standalone" applications, which can use some resources of 5559c609719bSwdenkU-Boot like console I/O functions or interrupt services. 5560c609719bSwdenk 5561c609719bSwdenkTwo simple examples are included with the sources: 5562c609719bSwdenk 5563c609719bSwdenk"Hello World" Demo: 5564c609719bSwdenk------------------- 5565c609719bSwdenk 5566c609719bSwdenk'examples/hello_world.c' contains a small "Hello World" Demo 5567c609719bSwdenkapplication; it is automatically compiled when you build U-Boot. 5568c609719bSwdenkIt's configured to run at address 0x00040004, so you can play with it 5569c609719bSwdenklike that: 5570c609719bSwdenk 5571c609719bSwdenk => loads 5572c609719bSwdenk ## Ready for S-Record download ... 5573c609719bSwdenk ~>examples/hello_world.srec 5574c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 ... 5575c609719bSwdenk [file transfer complete] 5576c609719bSwdenk [connected] 5577c609719bSwdenk ## Start Addr = 0x00040004 5578c609719bSwdenk 5579c609719bSwdenk => go 40004 Hello World! This is a test. 5580c609719bSwdenk ## Starting application at 0x00040004 ... 5581c609719bSwdenk Hello World 5582c609719bSwdenk argc = 7 5583c609719bSwdenk argv[0] = "40004" 5584c609719bSwdenk argv[1] = "Hello" 5585c609719bSwdenk argv[2] = "World!" 5586c609719bSwdenk argv[3] = "This" 5587c609719bSwdenk argv[4] = "is" 5588c609719bSwdenk argv[5] = "a" 5589c609719bSwdenk argv[6] = "test." 5590c609719bSwdenk argv[7] = "<NULL>" 5591c609719bSwdenk Hit any key to exit ... 5592c609719bSwdenk 5593c609719bSwdenk ## Application terminated, rc = 0x0 5594c609719bSwdenk 5595c609719bSwdenkAnother example, which demonstrates how to register a CPM interrupt 5596c609719bSwdenkhandler with the U-Boot code, can be found in 'examples/timer.c'. 5597c609719bSwdenkHere, a CPM timer is set up to generate an interrupt every second. 5598c609719bSwdenkThe interrupt service routine is trivial, just printing a '.' 5599c609719bSwdenkcharacter, but this is just a demo program. The application can be 5600c609719bSwdenkcontrolled by the following keys: 5601c609719bSwdenk 5602c609719bSwdenk ? - print current values og the CPM Timer registers 5603c609719bSwdenk b - enable interrupts and start timer 5604c609719bSwdenk e - stop timer and disable interrupts 5605c609719bSwdenk q - quit application 5606c609719bSwdenk 5607c609719bSwdenk => loads 5608c609719bSwdenk ## Ready for S-Record download ... 5609c609719bSwdenk ~>examples/timer.srec 5610c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 ... 5611c609719bSwdenk [file transfer complete] 5612c609719bSwdenk [connected] 5613c609719bSwdenk ## Start Addr = 0x00040004 5614c609719bSwdenk 5615c609719bSwdenk => go 40004 5616c609719bSwdenk ## Starting application at 0x00040004 ... 5617c609719bSwdenk TIMERS=0xfff00980 5618c609719bSwdenk Using timer 1 5619c609719bSwdenk tgcr @ 0xfff00980, tmr @ 0xfff00990, trr @ 0xfff00994, tcr @ 0xfff00998, tcn @ 0xfff0099c, ter @ 0xfff009b0 5620c609719bSwdenk 5621c609719bSwdenkHit 'b': 5622c609719bSwdenk [q, b, e, ?] Set interval 1000000 us 5623c609719bSwdenk Enabling timer 5624c609719bSwdenkHit '?': 5625c609719bSwdenk [q, b, e, ?] ........ 5626c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0xef6, ter=0x0 5627c609719bSwdenkHit '?': 5628c609719bSwdenk [q, b, e, ?] . 5629c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x2ad4, ter=0x0 5630c609719bSwdenkHit '?': 5631c609719bSwdenk [q, b, e, ?] . 5632c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x1efc, ter=0x0 5633c609719bSwdenkHit '?': 5634c609719bSwdenk [q, b, e, ?] . 5635c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x169d, ter=0x0 5636c609719bSwdenkHit 'e': 5637c609719bSwdenk [q, b, e, ?] ...Stopping timer 5638c609719bSwdenkHit 'q': 5639c609719bSwdenk [q, b, e, ?] ## Application terminated, rc = 0x0 5640c609719bSwdenk 5641c609719bSwdenk 564285ec0bccSwdenkMinicom warning: 564385ec0bccSwdenk================ 564485ec0bccSwdenk 56457152b1d0SwdenkOver time, many people have reported problems when trying to use the 564685ec0bccSwdenk"minicom" terminal emulation program for serial download. I (wd) 564785ec0bccSwdenkconsider minicom to be broken, and recommend not to use it. Under 5648f07771ccSwdenkUnix, I recommend to use C-Kermit for general purpose use (and 564985ec0bccSwdenkespecially for kermit binary protocol download ("loadb" command), and 5650e53515a2SKarl O. Pincuse "cu" for S-Record download ("loads" command). See 5651e53515a2SKarl O. Pinchttp://www.denx.de/wiki/view/DULG/SystemSetup#Section_4.3. 5652e53515a2SKarl O. Pincfor help with kermit. 5653e53515a2SKarl O. Pinc 565485ec0bccSwdenk 565552f52c14SwdenkNevertheless, if you absolutely want to use it try adding this 565652f52c14Swdenkconfiguration to your "File transfer protocols" section: 565752f52c14Swdenk 565852f52c14Swdenk Name Program Name U/D FullScr IO-Red. Multi 565952f52c14Swdenk X kermit /usr/bin/kermit -i -l %l -s Y U Y N N 566052f52c14Swdenk Y kermit /usr/bin/kermit -i -l %l -r N D Y N N 566152f52c14Swdenk 566252f52c14Swdenk 5663c609719bSwdenkNetBSD Notes: 5664c609719bSwdenk============= 5665c609719bSwdenk 5666c609719bSwdenkStarting at version 0.9.2, U-Boot supports NetBSD both as host 5667c609719bSwdenk(build U-Boot) and target system (boots NetBSD/mpc8xx). 5668c609719bSwdenk 5669c609719bSwdenkBuilding requires a cross environment; it is known to work on 5670c609719bSwdenkNetBSD/i386 with the cross-powerpc-netbsd-1.3 package (you will also 5671c609719bSwdenkneed gmake since the Makefiles are not compatible with BSD make). 5672c609719bSwdenkNote that the cross-powerpc package does not install include files; 5673c609719bSwdenkattempting to build U-Boot will fail because <machine/ansi.h> is 5674c609719bSwdenkmissing. This file has to be installed and patched manually: 5675c609719bSwdenk 5676c609719bSwdenk # cd /usr/pkg/cross/powerpc-netbsd/include 5677c609719bSwdenk # mkdir powerpc 5678c609719bSwdenk # ln -s powerpc machine 5679c609719bSwdenk # cp /usr/src/sys/arch/powerpc/include/ansi.h powerpc/ansi.h 5680c609719bSwdenk # ${EDIT} powerpc/ansi.h ## must remove __va_list, _BSD_VA_LIST 5681c609719bSwdenk 5682c609719bSwdenkNative builds *don't* work due to incompatibilities between native 5683c609719bSwdenkand U-Boot include files. 5684c609719bSwdenk 5685c609719bSwdenkBooting assumes that (the first part of) the image booted is a 5686c609719bSwdenkstage-2 loader which in turn loads and then invokes the kernel 5687c609719bSwdenkproper. Loader sources will eventually appear in the NetBSD source 5688c609719bSwdenktree (probably in sys/arc/mpc8xx/stand/u-boot_stage2/); in the 56892a8af187Swdenkmeantime, see ftp://ftp.denx.de/pub/u-boot/ppcboot_stage2.tar.gz 5690c609719bSwdenk 5691c609719bSwdenk 5692c609719bSwdenkImplementation Internals: 5693c609719bSwdenk========================= 5694c609719bSwdenk 5695c609719bSwdenkThe following is not intended to be a complete description of every 5696c609719bSwdenkimplementation detail. However, it should help to understand the 5697c609719bSwdenkinner workings of U-Boot and make it easier to port it to custom 5698c609719bSwdenkhardware. 5699c609719bSwdenk 5700c609719bSwdenk 5701c609719bSwdenkInitial Stack, Global Data: 5702c609719bSwdenk--------------------------- 5703c609719bSwdenk 5704c609719bSwdenkThe implementation of U-Boot is complicated by the fact that U-Boot 5705c609719bSwdenkstarts running out of ROM (flash memory), usually without access to 5706c609719bSwdenksystem RAM (because the memory controller is not initialized yet). 5707c609719bSwdenkThis means that we don't have writable Data or BSS segments, and BSS 5708c609719bSwdenkis not initialized as zero. To be able to get a C environment working 5709c609719bSwdenkat all, we have to allocate at least a minimal stack. Implementation 5710c609719bSwdenkoptions for this are defined and restricted by the CPU used: Some CPU 5711c609719bSwdenkmodels provide on-chip memory (like the IMMR area on MPC8xx and 5712c609719bSwdenkMPC826x processors), on others (parts of) the data cache can be 5713c609719bSwdenklocked as (mis-) used as memory, etc. 5714c609719bSwdenk 57157152b1d0Swdenk Chris Hallinan posted a good summary of these issues to the 57160668236bSWolfgang Denk U-Boot mailing list: 571743d9616cSwdenk 571843d9616cSwdenk Subject: RE: [U-Boot-Users] RE: More On Memory Bank x (nothingness)? 571943d9616cSwdenk From: "Chris Hallinan" <clh@net1plus.com> 572043d9616cSwdenk Date: Mon, 10 Feb 2003 16:43:46 -0500 (22:43 MET) 572143d9616cSwdenk ... 572243d9616cSwdenk 572343d9616cSwdenk Correct me if I'm wrong, folks, but the way I understand it 572443d9616cSwdenk is this: Using DCACHE as initial RAM for Stack, etc, does not 572543d9616cSwdenk require any physical RAM backing up the cache. The cleverness 572643d9616cSwdenk is that the cache is being used as a temporary supply of 572743d9616cSwdenk necessary storage before the SDRAM controller is setup. It's 572811ccc33fSMarcel Ziswiler beyond the scope of this list to explain the details, but you 572943d9616cSwdenk can see how this works by studying the cache architecture and 573043d9616cSwdenk operation in the architecture and processor-specific manuals. 573143d9616cSwdenk 573243d9616cSwdenk OCM is On Chip Memory, which I believe the 405GP has 4K. It 573343d9616cSwdenk is another option for the system designer to use as an 573411ccc33fSMarcel Ziswiler initial stack/RAM area prior to SDRAM being available. Either 573543d9616cSwdenk option should work for you. Using CS 4 should be fine if your 573643d9616cSwdenk board designers haven't used it for something that would 573743d9616cSwdenk cause you grief during the initial boot! It is frequently not 573843d9616cSwdenk used. 573943d9616cSwdenk 57406d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_RAM_ADDR should be somewhere that won't interfere 574143d9616cSwdenk with your processor/board/system design. The default value 574243d9616cSwdenk you will find in any recent u-boot distribution in 57438a316c9bSStefan Roese walnut.h should work for you. I'd set it to a value larger 574443d9616cSwdenk than your SDRAM module. If you have a 64MB SDRAM module, set 574543d9616cSwdenk it above 400_0000. Just make sure your board has no resources 574643d9616cSwdenk that are supposed to respond to that address! That code in 574743d9616cSwdenk start.S has been around a while and should work as is when 574843d9616cSwdenk you get the config right. 574943d9616cSwdenk 575043d9616cSwdenk -Chris Hallinan 575143d9616cSwdenk DS4.COM, Inc. 575243d9616cSwdenk 5753c609719bSwdenkIt is essential to remember this, since it has some impact on the C 5754c609719bSwdenkcode for the initialization procedures: 5755c609719bSwdenk 5756c609719bSwdenk* Initialized global data (data segment) is read-only. Do not attempt 5757c609719bSwdenk to write it. 5758c609719bSwdenk 575911ccc33fSMarcel Ziswiler* Do not use any uninitialized global data (or implicitely initialized 5760c609719bSwdenk as zero data - BSS segment) at all - this is undefined, initiali- 57617152b1d0Swdenk zation is performed later (when relocating to RAM). 5762c609719bSwdenk 5763c609719bSwdenk* Stack space is very limited. Avoid big data buffers or things like 5764c609719bSwdenk that. 5765c609719bSwdenk 5766c609719bSwdenkHaving only the stack as writable memory limits means we cannot use 5767c609719bSwdenknormal global data to share information beween the code. But it 5768c609719bSwdenkturned out that the implementation of U-Boot can be greatly 5769c609719bSwdenksimplified by making a global data structure (gd_t) available to all 5770c609719bSwdenkfunctions. We could pass a pointer to this data as argument to _all_ 5771c609719bSwdenkfunctions, but this would bloat the code. Instead we use a feature of 5772c609719bSwdenkthe GCC compiler (Global Register Variables) to share the data: we 5773c609719bSwdenkplace a pointer (gd) to the global data into a register which we 5774c609719bSwdenkreserve for this purpose. 5775c609719bSwdenk 57767152b1d0SwdenkWhen choosing a register for such a purpose we are restricted by the 5777c609719bSwdenkrelevant (E)ABI specifications for the current architecture, and by 5778c609719bSwdenkGCC's implementation. 5779c609719bSwdenk 5780c609719bSwdenkFor PowerPC, the following registers have specific use: 5781c609719bSwdenk R1: stack pointer 5782e7670f6cSWolfgang Denk R2: reserved for system use 5783c609719bSwdenk R3-R4: parameter passing and return values 5784c609719bSwdenk R5-R10: parameter passing 5785c609719bSwdenk R13: small data area pointer 5786c609719bSwdenk R30: GOT pointer 5787c609719bSwdenk R31: frame pointer 5788c609719bSwdenk 5789e6bee808SJoakim Tjernlund (U-Boot also uses R12 as internal GOT pointer. r12 5790e6bee808SJoakim Tjernlund is a volatile register so r12 needs to be reset when 5791e6bee808SJoakim Tjernlund going back and forth between asm and C) 5792c609719bSwdenk 5793e7670f6cSWolfgang Denk ==> U-Boot will use R2 to hold a pointer to the global data 5794c609719bSwdenk 5795c609719bSwdenk Note: on PPC, we could use a static initializer (since the 5796c609719bSwdenk address of the global data structure is known at compile time), 5797c609719bSwdenk but it turned out that reserving a register results in somewhat 5798c609719bSwdenk smaller code - although the code savings are not that big (on 5799c609719bSwdenk average for all boards 752 bytes for the whole U-Boot image, 5800c609719bSwdenk 624 text + 127 data). 5801c609719bSwdenk 5802c4db335cSRobin GetzOn Blackfin, the normal C ABI (except for P3) is followed as documented here: 58034c58eb55SMike Frysinger http://docs.blackfin.uclinux.org/doku.php?id=application_binary_interface 58044c58eb55SMike Frysinger 5805c4db335cSRobin Getz ==> U-Boot will use P3 to hold a pointer to the global data 58064c58eb55SMike Frysinger 5807c609719bSwdenkOn ARM, the following registers are used: 5808c609719bSwdenk 5809c609719bSwdenk R0: function argument word/integer result 5810c609719bSwdenk R1-R3: function argument word 581112eba1b4SJeroen Hofstee R9: platform specific 581212eba1b4SJeroen Hofstee R10: stack limit (used only if stack checking is enabled) 5813c609719bSwdenk R11: argument (frame) pointer 5814c609719bSwdenk R12: temporary workspace 5815c609719bSwdenk R13: stack pointer 5816c609719bSwdenk R14: link register 5817c609719bSwdenk R15: program counter 5818c609719bSwdenk 581912eba1b4SJeroen Hofstee ==> U-Boot will use R9 to hold a pointer to the global data 582012eba1b4SJeroen Hofstee 582112eba1b4SJeroen Hofstee Note: on ARM, only R_ARM_RELATIVE relocations are supported. 5822c609719bSwdenk 58230df01fd3SThomas ChouOn Nios II, the ABI is documented here: 58240df01fd3SThomas Chou http://www.altera.com/literature/hb/nios2/n2cpu_nii51016.pdf 58250df01fd3SThomas Chou 58260df01fd3SThomas Chou ==> U-Boot will use gp to hold a pointer to the global data 58270df01fd3SThomas Chou 58280df01fd3SThomas Chou Note: on Nios II, we give "-G0" option to gcc and don't use gp 58290df01fd3SThomas Chou to access small data sections, so gp is free. 58300df01fd3SThomas Chou 5831afc1ce82SMacpaul LinOn NDS32, the following registers are used: 5832afc1ce82SMacpaul Lin 5833afc1ce82SMacpaul Lin R0-R1: argument/return 5834afc1ce82SMacpaul Lin R2-R5: argument 5835afc1ce82SMacpaul Lin R15: temporary register for assembler 5836afc1ce82SMacpaul Lin R16: trampoline register 5837afc1ce82SMacpaul Lin R28: frame pointer (FP) 5838afc1ce82SMacpaul Lin R29: global pointer (GP) 5839afc1ce82SMacpaul Lin R30: link register (LP) 5840afc1ce82SMacpaul Lin R31: stack pointer (SP) 5841afc1ce82SMacpaul Lin PC: program counter (PC) 5842afc1ce82SMacpaul Lin 5843afc1ce82SMacpaul Lin ==> U-Boot will use R10 to hold a pointer to the global data 5844afc1ce82SMacpaul Lin 5845d87080b7SWolfgang DenkNOTE: DECLARE_GLOBAL_DATA_PTR must be used with file-global scope, 5846d87080b7SWolfgang Denkor current versions of GCC may "optimize" the code too much. 5847c609719bSwdenk 5848c609719bSwdenkMemory Management: 5849c609719bSwdenk------------------ 5850c609719bSwdenk 5851c609719bSwdenkU-Boot runs in system state and uses physical addresses, i.e. the 5852c609719bSwdenkMMU is not used either for address mapping nor for memory protection. 5853c609719bSwdenk 5854c609719bSwdenkThe available memory is mapped to fixed addresses using the memory 5855c609719bSwdenkcontroller. In this process, a contiguous block is formed for each 5856c609719bSwdenkmemory type (Flash, SDRAM, SRAM), even when it consists of several 5857c609719bSwdenkphysical memory banks. 5858c609719bSwdenk 5859c609719bSwdenkU-Boot is installed in the first 128 kB of the first Flash bank (on 5860c609719bSwdenkTQM8xxL modules this is the range 0x40000000 ... 0x4001FFFF). After 5861c609719bSwdenkbooting and sizing and initializing DRAM, the code relocates itself 5862c609719bSwdenkto the upper end of DRAM. Immediately below the U-Boot code some 58636d0f6bcfSJean-Christophe PLAGNIOL-VILLARDmemory is reserved for use by malloc() [see CONFIG_SYS_MALLOC_LEN 5864c609719bSwdenkconfiguration setting]. Below that, a structure with global Board 5865c609719bSwdenkInfo data is placed, followed by the stack (growing downward). 5866c609719bSwdenk 5867c609719bSwdenkAdditionally, some exception handler code is copied to the low 8 kB 5868c609719bSwdenkof DRAM (0x00000000 ... 0x00001FFF). 5869c609719bSwdenk 5870c609719bSwdenkSo a typical memory configuration with 16 MB of DRAM could look like 5871c609719bSwdenkthis: 5872c609719bSwdenk 5873c609719bSwdenk 0x0000 0000 Exception Vector code 5874c609719bSwdenk : 5875c609719bSwdenk 0x0000 1FFF 5876c609719bSwdenk 0x0000 2000 Free for Application Use 5877c609719bSwdenk : 5878c609719bSwdenk : 5879c609719bSwdenk 5880c609719bSwdenk : 5881c609719bSwdenk : 5882c609719bSwdenk 0x00FB FF20 Monitor Stack (Growing downward) 5883c609719bSwdenk 0x00FB FFAC Board Info Data and permanent copy of global data 5884c609719bSwdenk 0x00FC 0000 Malloc Arena 5885c609719bSwdenk : 5886c609719bSwdenk 0x00FD FFFF 5887c609719bSwdenk 0x00FE 0000 RAM Copy of Monitor Code 5888c609719bSwdenk ... eventually: LCD or video framebuffer 5889c609719bSwdenk ... eventually: pRAM (Protected RAM - unchanged by reset) 5890c609719bSwdenk 0x00FF FFFF [End of RAM] 5891c609719bSwdenk 5892c609719bSwdenk 5893c609719bSwdenkSystem Initialization: 5894c609719bSwdenk---------------------- 5895c609719bSwdenk 5896c609719bSwdenkIn the reset configuration, U-Boot starts at the reset entry point 589711ccc33fSMarcel Ziswiler(on most PowerPC systems at address 0x00000100). Because of the reset 5898c609719bSwdenkconfiguration for CS0# this is a mirror of the onboard Flash memory. 58997152b1d0SwdenkTo be able to re-map memory U-Boot then jumps to its link address. 5900c609719bSwdenkTo be able to implement the initialization code in C, a (small!) 5901c609719bSwdenkinitial stack is set up in the internal Dual Ported RAM (in case CPUs 5902c609719bSwdenkwhich provide such a feature like MPC8xx or MPC8260), or in a locked 5903c609719bSwdenkpart of the data cache. After that, U-Boot initializes the CPU core, 5904c609719bSwdenkthe caches and the SIU. 5905c609719bSwdenk 5906c609719bSwdenkNext, all (potentially) available memory banks are mapped using a 5907c609719bSwdenkpreliminary mapping. For example, we put them on 512 MB boundaries 5908c609719bSwdenk(multiples of 0x20000000: SDRAM on 0x00000000 and 0x20000000, Flash 5909c609719bSwdenkon 0x40000000 and 0x60000000, SRAM on 0x80000000). Then UPM A is 5910c609719bSwdenkprogrammed for SDRAM access. Using the temporary configuration, a 5911c609719bSwdenksimple memory test is run that determines the size of the SDRAM 5912c609719bSwdenkbanks. 5913c609719bSwdenk 5914c609719bSwdenkWhen there is more than one SDRAM bank, and the banks are of 59157152b1d0Swdenkdifferent size, the largest is mapped first. For equal size, the first 5916c609719bSwdenkbank (CS2#) is mapped first. The first mapping is always for address 5917c609719bSwdenk0x00000000, with any additional banks following immediately to create 5918c609719bSwdenkcontiguous memory starting from 0. 5919c609719bSwdenk 5920c609719bSwdenkThen, the monitor installs itself at the upper end of the SDRAM area 5921c609719bSwdenkand allocates memory for use by malloc() and for the global Board 5922c609719bSwdenkInfo data; also, the exception vector code is copied to the low RAM 5923c609719bSwdenkpages, and the final stack is set up. 5924c609719bSwdenk 5925c609719bSwdenkOnly after this relocation will you have a "normal" C environment; 5926c609719bSwdenkuntil that you are restricted in several ways, mostly because you are 5927c609719bSwdenkrunning from ROM, and because the code will have to be relocated to a 5928c609719bSwdenknew address in RAM. 5929c609719bSwdenk 5930c609719bSwdenk 5931c609719bSwdenkU-Boot Porting Guide: 5932c609719bSwdenk---------------------- 5933c609719bSwdenk 5934c609719bSwdenk[Based on messages by Jerry Van Baren in the U-Boot-Users mailing 59356aff3115Swdenklist, October 2002] 5936c609719bSwdenk 5937c609719bSwdenk 5938c609719bSwdenkint main(int argc, char *argv[]) 5939c609719bSwdenk{ 5940c609719bSwdenk sighandler_t no_more_time; 5941c609719bSwdenk 5942c609719bSwdenk signal(SIGALRM, no_more_time); 5943c609719bSwdenk alarm(PROJECT_DEADLINE - toSec (3 * WEEK)); 5944c609719bSwdenk 5945c609719bSwdenk if (available_money > available_manpower) { 59466c3fef28SJerry Van Baren Pay consultant to port U-Boot; 5947c609719bSwdenk return 0; 5948c609719bSwdenk } 5949c609719bSwdenk 5950c609719bSwdenk Download latest U-Boot source; 5951c609719bSwdenk 59520668236bSWolfgang Denk Subscribe to u-boot mailing list; 59536aff3115Swdenk 59546c3fef28SJerry Van Baren if (clueless) 5955c609719bSwdenk email("Hi, I am new to U-Boot, how do I get started?"); 5956c609719bSwdenk 5957c609719bSwdenk while (learning) { 5958c609719bSwdenk Read the README file in the top level directory; 59597cb22f97Swdenk Read http://www.denx.de/twiki/bin/view/DULG/Manual; 59606c3fef28SJerry Van Baren Read applicable doc/*.README; 5961c609719bSwdenk Read the source, Luke; 59626c3fef28SJerry Van Baren /* find . -name "*.[chS]" | xargs grep -i <keyword> */ 5963c609719bSwdenk } 5964c609719bSwdenk 59656c3fef28SJerry Van Baren if (available_money > toLocalCurrency ($2500)) 59666c3fef28SJerry Van Baren Buy a BDI3000; 59676c3fef28SJerry Van Baren else 5968c609719bSwdenk Add a lot of aggravation and time; 5969c609719bSwdenk 59706c3fef28SJerry Van Baren if (a similar board exists) { /* hopefully... */ 59716c3fef28SJerry Van Baren cp -a board/<similar> board/<myboard> 59726c3fef28SJerry Van Baren cp include/configs/<similar>.h include/configs/<myboard>.h 59736c3fef28SJerry Van Baren } else { 5974c609719bSwdenk Create your own board support subdirectory; 59756c3fef28SJerry Van Baren Create your own board include/configs/<myboard>.h file; 59766c3fef28SJerry Van Baren } 59776c3fef28SJerry Van Baren Edit new board/<myboard> files 59786c3fef28SJerry Van Baren Edit new include/configs/<myboard>.h 5979c609719bSwdenk 59806c3fef28SJerry Van Baren while (!accepted) { 5981c609719bSwdenk while (!running) { 5982c609719bSwdenk do { 5983c609719bSwdenk Add / modify source code; 5984c609719bSwdenk } until (compiles); 5985c609719bSwdenk Debug; 5986c609719bSwdenk if (clueless) 5987c609719bSwdenk email("Hi, I am having problems..."); 5988c609719bSwdenk } 59896c3fef28SJerry Van Baren Send patch file to the U-Boot email list; 59906c3fef28SJerry Van Baren if (reasonable critiques) 59916c3fef28SJerry Van Baren Incorporate improvements from email list code review; 59926c3fef28SJerry Van Baren else 59936c3fef28SJerry Van Baren Defend code as written; 59946c3fef28SJerry Van Baren } 5995c609719bSwdenk 5996c609719bSwdenk return 0; 5997c609719bSwdenk} 5998c609719bSwdenk 5999c609719bSwdenkvoid no_more_time (int sig) 6000c609719bSwdenk{ 6001c609719bSwdenk hire_a_guru(); 6002c609719bSwdenk} 6003c609719bSwdenk 6004c609719bSwdenk 6005c609719bSwdenkCoding Standards: 6006c609719bSwdenk----------------- 6007c609719bSwdenk 6008c609719bSwdenkAll contributions to U-Boot should conform to the Linux kernel 60092c051651SDetlev Zundelcoding style; see the file "Documentation/CodingStyle" and the script 60107ca9296eSWolfgang Denk"scripts/Lindent" in your Linux kernel source directory. 6011c609719bSwdenk 60122c051651SDetlev ZundelSource files originating from a different project (for example the 60132c051651SDetlev ZundelMTD subsystem) are generally exempt from these guidelines and are not 60142c051651SDetlev Zundelreformated to ease subsequent migration to newer versions of those 60152c051651SDetlev Zundelsources. 60162c051651SDetlev Zundel 60172c051651SDetlev ZundelPlease note that U-Boot is implemented in C (and to some small parts in 60182c051651SDetlev ZundelAssembler); no C++ is used, so please do not use C++ style comments (//) 60192c051651SDetlev Zundelin your code. 6020c609719bSwdenk 6021c178d3daSwdenkPlease also stick to the following formatting rules: 6022180d3f74Swdenk- remove any trailing white space 60237ca9296eSWolfgang Denk- use TAB characters for indentation and vertical alignment, not spaces 6024180d3f74Swdenk- make sure NOT to use DOS '\r\n' line feeds 60257ca9296eSWolfgang Denk- do not add more than 2 consecutive empty lines to source files 6026180d3f74Swdenk- do not add trailing empty lines to source files 6027180d3f74Swdenk 6028c609719bSwdenkSubmissions which do not conform to the standards may be returned 6029c609719bSwdenkwith a request to reformat the changes. 6030c609719bSwdenk 6031c609719bSwdenk 6032c609719bSwdenkSubmitting Patches: 6033c609719bSwdenk------------------- 6034c609719bSwdenk 6035c609719bSwdenkSince the number of patches for U-Boot is growing, we need to 6036c609719bSwdenkestablish some rules. Submissions which do not conform to these rules 6037c609719bSwdenkmay be rejected, even when they contain important and valuable stuff. 6038c609719bSwdenk 60390d28f34bSMagnus LiljaPlease see http://www.denx.de/wiki/U-Boot/Patches for details. 6040218ca724SWolfgang Denk 60410668236bSWolfgang DenkPatches shall be sent to the u-boot mailing list <u-boot@lists.denx.de>; 60420668236bSWolfgang Denksee http://lists.denx.de/mailman/listinfo/u-boot 60430668236bSWolfgang Denk 6044c609719bSwdenkWhen you send a patch, please include the following information with 6045c609719bSwdenkit: 6046c609719bSwdenk 6047c609719bSwdenk* For bug fixes: a description of the bug and how your patch fixes 6048c609719bSwdenk this bug. Please try to include a way of demonstrating that the 6049c609719bSwdenk patch actually fixes something. 6050c609719bSwdenk 6051c609719bSwdenk* For new features: a description of the feature and your 6052c609719bSwdenk implementation. 6053c609719bSwdenk 6054c609719bSwdenk* A CHANGELOG entry as plaintext (separate from the patch) 6055c609719bSwdenk 6056c609719bSwdenk* For major contributions, your entry to the CREDITS file 6057c609719bSwdenk 605827af930eSAlbert ARIBAUD* When you add support for a new board, don't forget to add a 605927af930eSAlbert ARIBAUD maintainer e-mail address to the boards.cfg file, too. 6060c609719bSwdenk 6061c609719bSwdenk* If your patch adds new configuration options, don't forget to 6062c609719bSwdenk document these in the README file. 6063c609719bSwdenk 6064218ca724SWolfgang Denk* The patch itself. If you are using git (which is *strongly* 6065218ca724SWolfgang Denk recommended) you can easily generate the patch using the 60667ca9296eSWolfgang Denk "git format-patch". If you then use "git send-email" to send it to 6067218ca724SWolfgang Denk the U-Boot mailing list, you will avoid most of the common problems 6068218ca724SWolfgang Denk with some other mail clients. 6069c609719bSwdenk 6070218ca724SWolfgang Denk If you cannot use git, use "diff -purN OLD NEW". If your version of 6071218ca724SWolfgang Denk diff does not support these options, then get the latest version of 6072218ca724SWolfgang Denk GNU diff. 60736dff5529Swdenk 6074218ca724SWolfgang Denk The current directory when running this command shall be the parent 6075218ca724SWolfgang Denk directory of the U-Boot source tree (i. e. please make sure that 6076218ca724SWolfgang Denk your patch includes sufficient directory information for the 6077218ca724SWolfgang Denk affected files). 6078218ca724SWolfgang Denk 6079218ca724SWolfgang Denk We prefer patches as plain text. MIME attachments are discouraged, 6080218ca724SWolfgang Denk and compressed attachments must not be used. 6081c609719bSwdenk 608252f52c14Swdenk* If one logical set of modifications affects or creates several 608352f52c14Swdenk files, all these changes shall be submitted in a SINGLE patch file. 608452f52c14Swdenk 608552f52c14Swdenk* Changesets that contain different, unrelated modifications shall be 608652f52c14Swdenk submitted as SEPARATE patches, one patch per changeset. 608752f52c14Swdenk 608852f52c14Swdenk 6089c609719bSwdenkNotes: 6090c609719bSwdenk 6091c609719bSwdenk* Before sending the patch, run the MAKEALL script on your patched 6092c609719bSwdenk source tree and make sure that no errors or warnings are reported 6093c609719bSwdenk for any of the boards. 6094c609719bSwdenk 6095c609719bSwdenk* Keep your modifications to the necessary minimum: A patch 6096c609719bSwdenk containing several unrelated changes or arbitrary reformats will be 6097c609719bSwdenk returned with a request to re-formatting / split it. 6098c609719bSwdenk 6099c609719bSwdenk* If you modify existing code, make sure that your new code does not 6100c609719bSwdenk add to the memory footprint of the code ;-) Small is beautiful! 6101c609719bSwdenk When adding new features, these should compile conditionally only 6102c609719bSwdenk (using #ifdef), and the resulting code with the new feature 6103c609719bSwdenk disabled must not need more memory than the old code without your 6104c609719bSwdenk modification. 610590dc6704Swdenk 61060668236bSWolfgang Denk* Remember that there is a size limit of 100 kB per message on the 61070668236bSWolfgang Denk u-boot mailing list. Bigger patches will be moderated. If they are 61080668236bSWolfgang Denk reasonable and not too big, they will be acknowledged. But patches 61090668236bSWolfgang Denk bigger than the size limit should be avoided. 6110