1c609719bSwdenk# 2eca3aeb3SWolfgang Denk# (C) Copyright 2000 - 2013 3c609719bSwdenk# Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4c609719bSwdenk# 5eca3aeb3SWolfgang Denk# SPDX-License-Identifier: GPL-2.0+ 6c609719bSwdenk# 7c609719bSwdenk 8c609719bSwdenkSummary: 9c609719bSwdenk======== 10c609719bSwdenk 1124ee89b9SwdenkThis directory contains the source code for U-Boot, a boot loader for 12e86e5a07SwdenkEmbedded boards based on PowerPC, ARM, MIPS and several other 13e86e5a07Swdenkprocessors, which can be installed in a boot ROM and used to 14e86e5a07Swdenkinitialize and test the hardware or to download and run application 15e86e5a07Swdenkcode. 16c609719bSwdenk 17c609719bSwdenkThe development of U-Boot is closely related to Linux: some parts of 1824ee89b9Swdenkthe source code originate in the Linux source tree, we have some 1924ee89b9Swdenkheader files in common, and special provision has been made to 20c609719bSwdenksupport booting of Linux images. 21c609719bSwdenk 22c609719bSwdenkSome attention has been paid to make this software easily 23c609719bSwdenkconfigurable and extendable. For instance, all monitor commands are 24c609719bSwdenkimplemented with the same call interface, so that it's very easy to 25c609719bSwdenkadd new commands. Also, instead of permanently adding rarely used 26c609719bSwdenkcode (for instance hardware test utilities) to the monitor, you can 27c609719bSwdenkload and run it dynamically. 28c609719bSwdenk 29c609719bSwdenk 30c609719bSwdenkStatus: 31c609719bSwdenk======= 32c609719bSwdenk 33c609719bSwdenkIn general, all boards for which a configuration option exists in the 34c609719bSwdenkMakefile have been tested to some extent and can be considered 35c609719bSwdenk"working". In fact, many of them are used in production systems. 36c609719bSwdenk 37c609719bSwdenkIn case of problems see the CHANGELOG and CREDITS files to find out 3827af930eSAlbert ARIBAUDwho contributed the specific port. The boards.cfg file lists board 39218ca724SWolfgang Denkmaintainers. 40c609719bSwdenk 41adb9d851SRobert P. J. DayNote: There is no CHANGELOG file in the actual U-Boot source tree; 42adb9d851SRobert P. J. Dayit can be created dynamically from the Git log using: 43adb9d851SRobert P. J. Day 44adb9d851SRobert P. J. Day make CHANGELOG 45adb9d851SRobert P. J. Day 46c609719bSwdenk 47c609719bSwdenkWhere to get help: 48c609719bSwdenk================== 49c609719bSwdenk 50c609719bSwdenkIn case you have questions about, problems with or contributions for 51c609719bSwdenkU-Boot you should send a message to the U-Boot mailing list at 520c32565fSPeter Tyser<u-boot@lists.denx.de>. There is also an archive of previous traffic 530c32565fSPeter Tyseron the mailing list - please search the archive before asking FAQ's. 540c32565fSPeter TyserPlease see http://lists.denx.de/pipermail/u-boot and 550c32565fSPeter Tyserhttp://dir.gmane.org/gmane.comp.boot-loaders.u-boot 56c609719bSwdenk 57c609719bSwdenk 58218ca724SWolfgang DenkWhere to get source code: 59218ca724SWolfgang Denk========================= 60218ca724SWolfgang Denk 61218ca724SWolfgang DenkThe U-Boot source code is maintained in the git repository at 62218ca724SWolfgang Denkgit://www.denx.de/git/u-boot.git ; you can browse it online at 63218ca724SWolfgang Denkhttp://www.denx.de/cgi-bin/gitweb.cgi?p=u-boot.git;a=summary 64218ca724SWolfgang Denk 65218ca724SWolfgang DenkThe "snapshot" links on this page allow you to download tarballs of 6611ccc33fSMarcel Ziswilerany version you might be interested in. Official releases are also 67218ca724SWolfgang Denkavailable for FTP download from the ftp://ftp.denx.de/pub/u-boot/ 68218ca724SWolfgang Denkdirectory. 69218ca724SWolfgang Denk 70d4ee711dSAnatolij GustschinPre-built (and tested) images are available from 71218ca724SWolfgang Denkftp://ftp.denx.de/pub/u-boot/images/ 72218ca724SWolfgang Denk 73218ca724SWolfgang Denk 74c609719bSwdenkWhere we come from: 75c609719bSwdenk=================== 76c609719bSwdenk 77c609719bSwdenk- start from 8xxrom sources 7824ee89b9Swdenk- create PPCBoot project (http://sourceforge.net/projects/ppcboot) 79c609719bSwdenk- clean up code 80c609719bSwdenk- make it easier to add custom boards 81c609719bSwdenk- make it possible to add other [PowerPC] CPUs 82c609719bSwdenk- extend functions, especially: 83c609719bSwdenk * Provide extended interface to Linux boot loader 84c609719bSwdenk * S-Record download 85c609719bSwdenk * network boot 8611ccc33fSMarcel Ziswiler * PCMCIA / CompactFlash / ATA disk / SCSI ... boot 8724ee89b9Swdenk- create ARMBoot project (http://sourceforge.net/projects/armboot) 88c609719bSwdenk- add other CPU families (starting with ARM) 8924ee89b9Swdenk- create U-Boot project (http://sourceforge.net/projects/u-boot) 900d28f34bSMagnus Lilja- current project page: see http://www.denx.de/wiki/U-Boot 9124ee89b9Swdenk 9224ee89b9Swdenk 9324ee89b9SwdenkNames and Spelling: 9424ee89b9Swdenk=================== 9524ee89b9Swdenk 9624ee89b9SwdenkThe "official" name of this project is "Das U-Boot". The spelling 9724ee89b9Swdenk"U-Boot" shall be used in all written text (documentation, comments 9824ee89b9Swdenkin source files etc.). Example: 9924ee89b9Swdenk 10024ee89b9Swdenk This is the README file for the U-Boot project. 10124ee89b9Swdenk 10224ee89b9SwdenkFile names etc. shall be based on the string "u-boot". Examples: 10324ee89b9Swdenk 10424ee89b9Swdenk include/asm-ppc/u-boot.h 10524ee89b9Swdenk 10624ee89b9Swdenk #include <asm/u-boot.h> 10724ee89b9Swdenk 10824ee89b9SwdenkVariable names, preprocessor constants etc. shall be either based on 10924ee89b9Swdenkthe string "u_boot" or on "U_BOOT". Example: 11024ee89b9Swdenk 11124ee89b9Swdenk U_BOOT_VERSION u_boot_logo 11224ee89b9Swdenk IH_OS_U_BOOT u_boot_hush_start 113c609719bSwdenk 114c609719bSwdenk 11593f19cc0SwdenkVersioning: 11693f19cc0Swdenk=========== 11793f19cc0Swdenk 118360d883aSThomas WeberStarting with the release in October 2008, the names of the releases 119360d883aSThomas Weberwere changed from numerical release numbers without deeper meaning 120360d883aSThomas Weberinto a time stamp based numbering. Regular releases are identified by 121360d883aSThomas Webernames consisting of the calendar year and month of the release date. 122360d883aSThomas WeberAdditional fields (if present) indicate release candidates or bug fix 123360d883aSThomas Weberreleases in "stable" maintenance trees. 12493f19cc0Swdenk 125360d883aSThomas WeberExamples: 126360d883aSThomas Weber U-Boot v2009.11 - Release November 2009 127360d883aSThomas Weber U-Boot v2009.11.1 - Release 1 in version November 2009 stable tree 128360d883aSThomas Weber U-Boot v2010.09-rc1 - Release candiate 1 for September 2010 release 12993f19cc0Swdenk 13093f19cc0Swdenk 131c609719bSwdenkDirectory Hierarchy: 132c609719bSwdenk==================== 133c609719bSwdenk 1348d321b81SPeter Tyser/arch Architecture specific files 1358d321b81SPeter Tyser /arm Files generic to ARM architecture 1368d321b81SPeter Tyser /cpu CPU specific files 1378d321b81SPeter Tyser /arm720t Files specific to ARM 720 CPUs 1388d321b81SPeter Tyser /arm920t Files specific to ARM 920 CPUs 1396eb0921aSAndreas Bießmann /at91 Files specific to Atmel AT91RM9200 CPU 1408d321b81SPeter Tyser /imx Files specific to Freescale MC9328 i.MX CPUs 1418d321b81SPeter Tyser /s3c24x0 Files specific to Samsung S3C24X0 CPUs 1428d321b81SPeter Tyser /arm926ejs Files specific to ARM 926 CPUs 1438d321b81SPeter Tyser /arm1136 Files specific to ARM 1136 CPUs 1448d321b81SPeter Tyser /ixp Files specific to Intel XScale IXP CPUs 1458d321b81SPeter Tyser /pxa Files specific to Intel XScale PXA CPUs 1468d321b81SPeter Tyser /sa1100 Files specific to Intel StrongARM SA1100 CPUs 1478d321b81SPeter Tyser /lib Architecture specific library files 1488d321b81SPeter Tyser /avr32 Files generic to AVR32 architecture 1498d321b81SPeter Tyser /cpu CPU specific files 1508d321b81SPeter Tyser /lib Architecture specific library files 1518d321b81SPeter Tyser /blackfin Files generic to Analog Devices Blackfin architecture 1528d321b81SPeter Tyser /cpu CPU specific files 1538d321b81SPeter Tyser /lib Architecture specific library files 1548d321b81SPeter Tyser /m68k Files generic to m68k architecture 1558d321b81SPeter Tyser /cpu CPU specific files 1568d321b81SPeter Tyser /mcf52x2 Files specific to Freescale ColdFire MCF52x2 CPUs 1578d321b81SPeter Tyser /mcf5227x Files specific to Freescale ColdFire MCF5227x CPUs 1588d321b81SPeter Tyser /mcf532x Files specific to Freescale ColdFire MCF5329 CPUs 1598d321b81SPeter Tyser /mcf5445x Files specific to Freescale ColdFire MCF5445x CPUs 1608d321b81SPeter Tyser /mcf547x_8x Files specific to Freescale ColdFire MCF547x_8x CPUs 1618d321b81SPeter Tyser /lib Architecture specific library files 1628d321b81SPeter Tyser /microblaze Files generic to microblaze architecture 1638d321b81SPeter Tyser /cpu CPU specific files 1648d321b81SPeter Tyser /lib Architecture specific library files 1658d321b81SPeter Tyser /mips Files generic to MIPS architecture 1668d321b81SPeter Tyser /cpu CPU specific files 16792bbd64eSDaniel Schwierzeck /mips32 Files specific to MIPS32 CPUs 16880421fccSXiangfu Liu /xburst Files specific to Ingenic XBurst CPUs 1698d321b81SPeter Tyser /lib Architecture specific library files 170afc1ce82SMacpaul Lin /nds32 Files generic to NDS32 architecture 171afc1ce82SMacpaul Lin /cpu CPU specific files 172afc1ce82SMacpaul Lin /n1213 Files specific to Andes Technology N1213 CPUs 173afc1ce82SMacpaul Lin /lib Architecture specific library files 1748d321b81SPeter Tyser /nios2 Files generic to Altera NIOS2 architecture 1758d321b81SPeter Tyser /cpu CPU specific files 1768d321b81SPeter Tyser /lib Architecture specific library files 17733c7731bSRobert P. J. Day /openrisc Files generic to OpenRISC architecture 17833c7731bSRobert P. J. Day /cpu CPU specific files 17933c7731bSRobert P. J. Day /lib Architecture specific library files 180a47a12beSStefan Roese /powerpc Files generic to PowerPC architecture 1818d321b81SPeter Tyser /cpu CPU specific files 1828d321b81SPeter Tyser /74xx_7xx Files specific to Freescale MPC74xx and 7xx CPUs 1838d321b81SPeter Tyser /mpc5xx Files specific to Freescale MPC5xx CPUs 1848d321b81SPeter Tyser /mpc5xxx Files specific to Freescale MPC5xxx CPUs 1858d321b81SPeter Tyser /mpc8xx Files specific to Freescale MPC8xx CPUs 1868d321b81SPeter Tyser /mpc824x Files specific to Freescale MPC824x CPUs 1878d321b81SPeter Tyser /mpc8260 Files specific to Freescale MPC8260 CPUs 1888d321b81SPeter Tyser /mpc85xx Files specific to Freescale MPC85xx CPUs 1898d321b81SPeter Tyser /ppc4xx Files specific to AMCC PowerPC 4xx CPUs 1908d321b81SPeter Tyser /lib Architecture specific library files 1918d321b81SPeter Tyser /sh Files generic to SH architecture 1928d321b81SPeter Tyser /cpu CPU specific files 1938d321b81SPeter Tyser /sh2 Files specific to sh2 CPUs 1948d321b81SPeter Tyser /sh3 Files specific to sh3 CPUs 1958d321b81SPeter Tyser /sh4 Files specific to sh4 CPUs 1968d321b81SPeter Tyser /lib Architecture specific library files 1978d321b81SPeter Tyser /sparc Files generic to SPARC architecture 1988d321b81SPeter Tyser /cpu CPU specific files 1998d321b81SPeter Tyser /leon2 Files specific to Gaisler LEON2 SPARC CPU 2008d321b81SPeter Tyser /leon3 Files specific to Gaisler LEON3 SPARC CPU 2018d321b81SPeter Tyser /lib Architecture specific library files 20233c7731bSRobert P. J. Day /x86 Files generic to x86 architecture 20333c7731bSRobert P. J. Day /cpu CPU specific files 20433c7731bSRobert P. J. Day /lib Architecture specific library files 2058d321b81SPeter Tyser/api Machine/arch independent API for external apps 2068d321b81SPeter Tyser/board Board dependent files 2078d321b81SPeter Tyser/common Misc architecture independent functions 2088d321b81SPeter Tyser/disk Code for disk drive partition handling 2098d321b81SPeter Tyser/doc Documentation (don't expect too much) 2108d321b81SPeter Tyser/drivers Commonly used device drivers 21133c7731bSRobert P. J. Day/dts Contains Makefile for building internal U-Boot fdt. 2128d321b81SPeter Tyser/examples Example code for standalone applications, etc. 2138d321b81SPeter Tyser/fs Filesystem code (cramfs, ext2, jffs2, etc.) 2148d321b81SPeter Tyser/include Header Files 2158d321b81SPeter Tyser/lib Files generic to all architectures 2168d321b81SPeter Tyser /libfdt Library files to support flattened device trees 2178d321b81SPeter Tyser /lzma Library files to support LZMA decompression 2188d321b81SPeter Tyser /lzo Library files to support LZO decompression 2198d321b81SPeter Tyser/net Networking code 2208d321b81SPeter Tyser/post Power On Self Test 22133c7731bSRobert P. J. Day/spl Secondary Program Loader framework 2228d321b81SPeter Tyser/tools Tools to build S-Record or U-Boot images, etc. 223c609719bSwdenk 224c609719bSwdenkSoftware Configuration: 225c609719bSwdenk======================= 226c609719bSwdenk 227c609719bSwdenkConfiguration is usually done using C preprocessor defines; the 228c609719bSwdenkrationale behind that is to avoid dead code whenever possible. 229c609719bSwdenk 230c609719bSwdenkThere are two classes of configuration variables: 231c609719bSwdenk 232c609719bSwdenk* Configuration _OPTIONS_: 233c609719bSwdenk These are selectable by the user and have names beginning with 234c609719bSwdenk "CONFIG_". 235c609719bSwdenk 236c609719bSwdenk* Configuration _SETTINGS_: 237c609719bSwdenk These depend on the hardware etc. and should not be meddled with if 238c609719bSwdenk you don't know what you're doing; they have names beginning with 2396d0f6bcfSJean-Christophe PLAGNIOL-VILLARD "CONFIG_SYS_". 240c609719bSwdenk 241c609719bSwdenkLater we will add a configuration tool - probably similar to or even 242c609719bSwdenkidentical to what's used for the Linux kernel. Right now, we have to 243c609719bSwdenkdo the configuration by hand, which means creating some symbolic 244c609719bSwdenklinks and editing some configuration files. We use the TQM8xxL boards 245c609719bSwdenkas an example here. 246c609719bSwdenk 247c609719bSwdenk 248c609719bSwdenkSelection of Processor Architecture and Board Type: 249c609719bSwdenk--------------------------------------------------- 250c609719bSwdenk 251c609719bSwdenkFor all supported boards there are ready-to-use default 252c609719bSwdenkconfigurations available; just type "make <board_name>_config". 253c609719bSwdenk 254c609719bSwdenkExample: For a TQM823L module type: 255c609719bSwdenk 256c609719bSwdenk cd u-boot 257c609719bSwdenk make TQM823L_config 258c609719bSwdenk 25911ccc33fSMarcel ZiswilerFor the Cogent platform, you need to specify the CPU type as well; 260c609719bSwdenke.g. "make cogent_mpc8xx_config". And also configure the cogent 261c609719bSwdenkdirectory according to the instructions in cogent/README. 262c609719bSwdenk 263c609719bSwdenk 264c609719bSwdenkConfiguration Options: 265c609719bSwdenk---------------------- 266c609719bSwdenk 267c609719bSwdenkConfiguration depends on the combination of board and CPU type; all 268c609719bSwdenksuch information is kept in a configuration file 269c609719bSwdenk"include/configs/<board_name>.h". 270c609719bSwdenk 271c609719bSwdenkExample: For a TQM823L module, all configuration settings are in 272c609719bSwdenk"include/configs/TQM823L.h". 273c609719bSwdenk 274c609719bSwdenk 2757f6c2cbcSwdenkMany of the options are named exactly as the corresponding Linux 2767f6c2cbcSwdenkkernel configuration options. The intention is to make it easier to 2777f6c2cbcSwdenkbuild a config tool - later. 2787f6c2cbcSwdenk 2797f6c2cbcSwdenk 280c609719bSwdenkThe following options need to be configured: 281c609719bSwdenk 2822628114eSKim Phillips- CPU Type: Define exactly one, e.g. CONFIG_MPC85XX. 283c609719bSwdenk 2842628114eSKim Phillips- Board Type: Define exactly one, e.g. CONFIG_MPC8540ADS. 2856ccec449SWolfgang Denk 2866ccec449SWolfgang Denk- CPU Daughterboard Type: (if CONFIG_ATSTK1000 is defined) 28709ea0de0SHaavard Skinnemoen Define exactly one, e.g. CONFIG_ATSTK1002 288c609719bSwdenk 289c609719bSwdenk- CPU Module Type: (if CONFIG_COGENT is defined) 290c609719bSwdenk Define exactly one of 291c609719bSwdenk CONFIG_CMA286_60_OLD 292c609719bSwdenk--- FIXME --- not tested yet: 293c609719bSwdenk CONFIG_CMA286_60, CONFIG_CMA286_21, CONFIG_CMA286_60P, 294c609719bSwdenk CONFIG_CMA287_23, CONFIG_CMA287_50 295c609719bSwdenk 296c609719bSwdenk- Motherboard Type: (if CONFIG_COGENT is defined) 297c609719bSwdenk Define exactly one of 298c609719bSwdenk CONFIG_CMA101, CONFIG_CMA102 299c609719bSwdenk 300c609719bSwdenk- Motherboard I/O Modules: (if CONFIG_COGENT is defined) 301c609719bSwdenk Define one or more of 302c609719bSwdenk CONFIG_CMA302 303c609719bSwdenk 304c609719bSwdenk- Motherboard Options: (if CONFIG_CMA101 or CONFIG_CMA102 are defined) 305c609719bSwdenk Define one or more of 306c609719bSwdenk CONFIG_LCD_HEARTBEAT - update a character position on 30711ccc33fSMarcel Ziswiler the LCD display every second with 308c609719bSwdenk a "rotator" |\-/|\-/ 309c609719bSwdenk 3102535d602Swdenk- Board flavour: (if CONFIG_MPC8260ADS is defined) 3112535d602Swdenk CONFIG_ADSTYPE 3122535d602Swdenk Possible values are: 3136d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8260ADS - original MPC8260ADS 3146d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8266ADS - MPC8266ADS 3156d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PQ2FADS - PQ2FADS-ZU or PQ2FADS-VR 3166d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8272ADS - MPC8272ADS 3172535d602Swdenk 318cf946c6dSLei Wen- Marvell Family Member 319cf946c6dSLei Wen CONFIG_SYS_MVFS - define it if you want to enable 320cf946c6dSLei Wen multiple fs option at one time 321cf946c6dSLei Wen for marvell soc family 322cf946c6dSLei Wen 323c609719bSwdenk- MPC824X Family Member (if CONFIG_MPC824X is defined) 324c609719bSwdenk Define exactly one of 325c609719bSwdenk CONFIG_MPC8240, CONFIG_MPC8245 326c609719bSwdenk 32711ccc33fSMarcel Ziswiler- 8xx CPU Options: (if using an MPC8xx CPU) 32866ca92a5Swdenk CONFIG_8xx_GCLK_FREQ - deprecated: CPU clock if 32966ca92a5Swdenk get_gclk_freq() cannot work 3305da627a4Swdenk e.g. if there is no 32KHz 3315da627a4Swdenk reference PIT/RTC clock 33266ca92a5Swdenk CONFIG_8xx_OSCLK - PLL input clock (either EXTCLK 33366ca92a5Swdenk or XTAL/EXTAL) 334c609719bSwdenk 33566ca92a5Swdenk- 859/866/885 CPU options: (if using a MPC859 or MPC866 or MPC885 CPU): 3366d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8xx_CPUCLK_MIN 3376d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8xx_CPUCLK_MAX 33866ca92a5Swdenk CONFIG_8xx_CPUCLK_DEFAULT 33975d1ea7fSwdenk See doc/README.MPC866 34075d1ea7fSwdenk 3416d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MEASURE_CPUCLK 34275d1ea7fSwdenk 34375d1ea7fSwdenk Define this to measure the actual CPU clock instead 34475d1ea7fSwdenk of relying on the correctness of the configured 34575d1ea7fSwdenk values. Mostly useful for board bringup to make sure 34675d1ea7fSwdenk the PLL is locked at the intended frequency. Note 34775d1ea7fSwdenk that this requires a (stable) reference clock (32 kHz 3486d0f6bcfSJean-Christophe PLAGNIOL-VILLARD RTC clock or CONFIG_SYS_8XX_XIN) 34975d1ea7fSwdenk 350506f3918SHeiko Schocher CONFIG_SYS_DELAYED_ICACHE 351506f3918SHeiko Schocher 352506f3918SHeiko Schocher Define this option if you want to enable the 353506f3918SHeiko Schocher ICache only when Code runs from RAM. 354506f3918SHeiko Schocher 35566412c63SKumar Gala- 85xx CPU Options: 356ffd06e02SYork Sun CONFIG_SYS_PPC64 357ffd06e02SYork Sun 358ffd06e02SYork Sun Specifies that the core is a 64-bit PowerPC implementation (implements 359ffd06e02SYork Sun the "64" category of the Power ISA). This is necessary for ePAPR 360ffd06e02SYork Sun compliance, among other possible reasons. 361ffd06e02SYork Sun 36266412c63SKumar Gala CONFIG_SYS_FSL_TBCLK_DIV 36366412c63SKumar Gala 36466412c63SKumar Gala Defines the core time base clock divider ratio compared to the 36566412c63SKumar Gala system clock. On most PQ3 devices this is 8, on newer QorIQ 36666412c63SKumar Gala devices it can be 16 or 32. The ratio varies from SoC to Soc. 36766412c63SKumar Gala 3688f29084aSKumar Gala CONFIG_SYS_FSL_PCIE_COMPAT 3698f29084aSKumar Gala 3708f29084aSKumar Gala Defines the string to utilize when trying to match PCIe device 3718f29084aSKumar Gala tree nodes for the given platform. 3728f29084aSKumar Gala 373afa6b551SPrabhakar Kushwaha CONFIG_SYS_PPC_E500_DEBUG_TLB 374afa6b551SPrabhakar Kushwaha 375afa6b551SPrabhakar Kushwaha Enables a temporary TLB entry to be used during boot to work 376afa6b551SPrabhakar Kushwaha around limitations in e500v1 and e500v2 external debugger 377afa6b551SPrabhakar Kushwaha support. This reduces the portions of the boot code where 378afa6b551SPrabhakar Kushwaha breakpoints and single stepping do not work. The value of this 379afa6b551SPrabhakar Kushwaha symbol should be set to the TLB1 entry to be used for this 380afa6b551SPrabhakar Kushwaha purpose. 381afa6b551SPrabhakar Kushwaha 38233eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510 38333eee330SScott Wood 38433eee330SScott Wood Enables a workaround for erratum A004510. If set, 38533eee330SScott Wood then CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV and 38633eee330SScott Wood CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY must be set. 38733eee330SScott Wood 38833eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV 38933eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2 (optional) 39033eee330SScott Wood 39133eee330SScott Wood Defines one or two SoC revisions (low 8 bits of SVR) 39233eee330SScott Wood for which the A004510 workaround should be applied. 39333eee330SScott Wood 39433eee330SScott Wood The rest of SVR is either not relevant to the decision 39533eee330SScott Wood of whether the erratum is present (e.g. p2040 versus 39633eee330SScott Wood p2041) or is implied by the build target, which controls 39733eee330SScott Wood whether CONFIG_SYS_FSL_ERRATUM_A004510 is set. 39833eee330SScott Wood 39933eee330SScott Wood See Freescale App Note 4493 for more information about 40033eee330SScott Wood this erratum. 40133eee330SScott Wood 40274fa22edSPrabhakar Kushwaha CONFIG_A003399_NOR_WORKAROUND 40374fa22edSPrabhakar Kushwaha Enables a workaround for IFC erratum A003399. It is only 40474fa22edSPrabhakar Kushwaha requred during NOR boot. 40574fa22edSPrabhakar Kushwaha 40633eee330SScott Wood CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY 40733eee330SScott Wood 40833eee330SScott Wood This is the value to write into CCSR offset 0x18600 40933eee330SScott Wood according to the A004510 workaround. 41033eee330SScott Wood 41164501c66SPriyanka Jain CONFIG_SYS_FSL_DSP_DDR_ADDR 41264501c66SPriyanka Jain This value denotes start offset of DDR memory which is 41364501c66SPriyanka Jain connected exclusively to the DSP cores. 41464501c66SPriyanka Jain 415765b0bdbSPriyanka Jain CONFIG_SYS_FSL_DSP_M2_RAM_ADDR 416765b0bdbSPriyanka Jain This value denotes start offset of M2 memory 417765b0bdbSPriyanka Jain which is directly connected to the DSP core. 418765b0bdbSPriyanka Jain 41964501c66SPriyanka Jain CONFIG_SYS_FSL_DSP_M3_RAM_ADDR 42064501c66SPriyanka Jain This value denotes start offset of M3 memory which is directly 42164501c66SPriyanka Jain connected to the DSP core. 42264501c66SPriyanka Jain 423765b0bdbSPriyanka Jain CONFIG_SYS_FSL_DSP_CCSRBAR_DEFAULT 424765b0bdbSPriyanka Jain This value denotes start offset of DSP CCSR space. 425765b0bdbSPriyanka Jain 426b135991aSPriyanka Jain CONFIG_SYS_FSL_SINGLE_SOURCE_CLK 427b135991aSPriyanka Jain Single Source Clock is clocking mode present in some of FSL SoC's. 428b135991aSPriyanka Jain In this mode, a single differential clock is used to supply 429b135991aSPriyanka Jain clocks to the sysclock, ddrclock and usbclock. 430b135991aSPriyanka Jain 4316cb461b4SDaniel Schwierzeck- Generic CPU options: 4326cb461b4SDaniel Schwierzeck CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN 4336cb461b4SDaniel Schwierzeck 4346cb461b4SDaniel Schwierzeck Defines the endianess of the CPU. Implementation of those 4356cb461b4SDaniel Schwierzeck values is arch specific. 4366cb461b4SDaniel Schwierzeck 4375614e71bSYork Sun CONFIG_SYS_FSL_DDR 4385614e71bSYork Sun Freescale DDR driver in use. This type of DDR controller is 4395614e71bSYork Sun found in mpc83xx, mpc85xx, mpc86xx as well as some ARM core 4405614e71bSYork Sun SoCs. 4415614e71bSYork Sun 4425614e71bSYork Sun CONFIG_SYS_FSL_DDR_ADDR 4435614e71bSYork Sun Freescale DDR memory-mapped register base. 4445614e71bSYork Sun 4455614e71bSYork Sun CONFIG_SYS_FSL_DDR_EMU 4465614e71bSYork Sun Specify emulator support for DDR. Some DDR features such as 4475614e71bSYork Sun deskew training are not available. 4485614e71bSYork Sun 4495614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN1 4505614e71bSYork Sun Freescale DDR1 controller. 4515614e71bSYork Sun 4525614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN2 4535614e71bSYork Sun Freescale DDR2 controller. 4545614e71bSYork Sun 4555614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN3 4565614e71bSYork Sun Freescale DDR3 controller. 4575614e71bSYork Sun 4589ac4ffbdSYork Sun CONFIG_SYS_FSL_DDRC_ARM_GEN3 4599ac4ffbdSYork Sun Freescale DDR3 controller for ARM-based SoCs. 4609ac4ffbdSYork Sun 4615614e71bSYork Sun CONFIG_SYS_FSL_DDR1 4625614e71bSYork Sun Board config to use DDR1. It can be enabled for SoCs with 4635614e71bSYork Sun Freescale DDR1 or DDR2 controllers, depending on the board 4645614e71bSYork Sun implemetation. 4655614e71bSYork Sun 4665614e71bSYork Sun CONFIG_SYS_FSL_DDR2 4675614e71bSYork Sun Board config to use DDR2. It can be eanbeld for SoCs with 4685614e71bSYork Sun Freescale DDR2 or DDR3 controllers, depending on the board 4695614e71bSYork Sun implementation. 4705614e71bSYork Sun 4715614e71bSYork Sun CONFIG_SYS_FSL_DDR3 4725614e71bSYork Sun Board config to use DDR3. It can be enabled for SoCs with 4735614e71bSYork Sun Freescale DDR3 controllers. 4745614e71bSYork Sun 4751b4175d6SPrabhakar Kushwaha CONFIG_SYS_FSL_IFC_BE 4761b4175d6SPrabhakar Kushwaha Defines the IFC controller register space as Big Endian 4771b4175d6SPrabhakar Kushwaha 4781b4175d6SPrabhakar Kushwaha CONFIG_SYS_FSL_IFC_LE 4791b4175d6SPrabhakar Kushwaha Defines the IFC controller register space as Little Endian 4801b4175d6SPrabhakar Kushwaha 481690e4258SPrabhakar Kushwaha CONFIG_SYS_FSL_PBL_PBI 482690e4258SPrabhakar Kushwaha It enables addition of RCW (Power on reset configuration) in built image. 483690e4258SPrabhakar Kushwaha Please refer doc/README.pblimage for more details 484690e4258SPrabhakar Kushwaha 485690e4258SPrabhakar Kushwaha CONFIG_SYS_FSL_PBL_RCW 486690e4258SPrabhakar Kushwaha It adds PBI(pre-boot instructions) commands in u-boot build image. 487690e4258SPrabhakar Kushwaha PBI commands can be used to configure SoC before it starts the execution. 488690e4258SPrabhakar Kushwaha Please refer doc/README.pblimage for more details 489690e4258SPrabhakar Kushwaha 4900b953ffcSMarkus Klotzbuecher- Intel Monahans options: 4916d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MONAHANS_RUN_MODE_OSC_RATIO 4920b953ffcSMarkus Klotzbuecher 4930b953ffcSMarkus Klotzbuecher Defines the Monahans run mode to oscillator 4940b953ffcSMarkus Klotzbuecher ratio. Valid values are 8, 16, 24, 31. The core 4950b953ffcSMarkus Klotzbuecher frequency is this value multiplied by 13 MHz. 4960b953ffcSMarkus Klotzbuecher 4976d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MONAHANS_TURBO_RUN_MODE_RATIO 4980b953ffcSMarkus Klotzbuecher 4990b953ffcSMarkus Klotzbuecher Defines the Monahans turbo mode to oscillator 5000b953ffcSMarkus Klotzbuecher ratio. Valid values are 1 (default if undefined) and 5010b953ffcSMarkus Klotzbuecher 2. The core frequency as calculated above is multiplied 5020b953ffcSMarkus Klotzbuecher by this value. 5030b953ffcSMarkus Klotzbuecher 50492bbd64eSDaniel Schwierzeck- MIPS CPU options: 50592bbd64eSDaniel Schwierzeck CONFIG_SYS_INIT_SP_OFFSET 50692bbd64eSDaniel Schwierzeck 50792bbd64eSDaniel Schwierzeck Offset relative to CONFIG_SYS_SDRAM_BASE for initial stack 50892bbd64eSDaniel Schwierzeck pointer. This is needed for the temporary stack before 50992bbd64eSDaniel Schwierzeck relocation. 51092bbd64eSDaniel Schwierzeck 51192bbd64eSDaniel Schwierzeck CONFIG_SYS_MIPS_CACHE_MODE 51292bbd64eSDaniel Schwierzeck 51392bbd64eSDaniel Schwierzeck Cache operation mode for the MIPS CPU. 51492bbd64eSDaniel Schwierzeck See also arch/mips/include/asm/mipsregs.h. 51592bbd64eSDaniel Schwierzeck Possible values are: 51692bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_NO_WA 51792bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_WA 51892bbd64eSDaniel Schwierzeck CONF_CM_UNCACHED 51992bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_NONCOHERENT 52092bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_CE 52192bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_COW 52292bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_CUW 52392bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_ACCELERATED 52492bbd64eSDaniel Schwierzeck 52592bbd64eSDaniel Schwierzeck CONFIG_SYS_XWAY_EBU_BOOTCFG 52692bbd64eSDaniel Schwierzeck 52792bbd64eSDaniel Schwierzeck Special option for Lantiq XWAY SoCs for booting from NOR flash. 52892bbd64eSDaniel Schwierzeck See also arch/mips/cpu/mips32/start.S. 52992bbd64eSDaniel Schwierzeck 53092bbd64eSDaniel Schwierzeck CONFIG_XWAY_SWAP_BYTES 53192bbd64eSDaniel Schwierzeck 53292bbd64eSDaniel Schwierzeck Enable compilation of tools/xway-swap-bytes needed for Lantiq 53392bbd64eSDaniel Schwierzeck XWAY SoCs for booting from NOR flash. The U-Boot image needs to 53492bbd64eSDaniel Schwierzeck be swapped if a flash programmer is used. 53592bbd64eSDaniel Schwierzeck 536b67d8816SChristian Riesch- ARM options: 537b67d8816SChristian Riesch CONFIG_SYS_EXCEPTION_VECTORS_HIGH 538b67d8816SChristian Riesch 539b67d8816SChristian Riesch Select high exception vectors of the ARM core, e.g., do not 540b67d8816SChristian Riesch clear the V bit of the c1 register of CP15. 541b67d8816SChristian Riesch 5425356f545SAneesh V CONFIG_SYS_THUMB_BUILD 5435356f545SAneesh V 5445356f545SAneesh V Use this flag to build U-Boot using the Thumb instruction 5455356f545SAneesh V set for ARM architectures. Thumb instruction set provides 5465356f545SAneesh V better code density. For ARM architectures that support 5475356f545SAneesh V Thumb2 this flag will result in Thumb2 code generated by 5485356f545SAneesh V GCC. 5495356f545SAneesh V 550c5d4752cSStephen Warren CONFIG_ARM_ERRATA_716044 5510678587fSStephen Warren CONFIG_ARM_ERRATA_742230 5520678587fSStephen Warren CONFIG_ARM_ERRATA_743622 5530678587fSStephen Warren CONFIG_ARM_ERRATA_751472 5540678587fSStephen Warren 5550678587fSStephen Warren If set, the workarounds for these ARM errata are applied early 5560678587fSStephen Warren during U-Boot startup. Note that these options force the 5570678587fSStephen Warren workarounds to be applied; no CPU-type/version detection 5580678587fSStephen Warren exists, unlike the similar options in the Linux kernel. Do not 5590678587fSStephen Warren set these options unless they apply! 5600678587fSStephen Warren 561795659dcSStephen Warren- CPU timer options: 562795659dcSStephen Warren CONFIG_SYS_HZ 563795659dcSStephen Warren 564795659dcSStephen Warren The frequency of the timer returned by get_timer(). 565795659dcSStephen Warren get_timer() must operate in milliseconds and this CONFIG 566795659dcSStephen Warren option must be set to 1000. 567795659dcSStephen Warren 5685da627a4Swdenk- Linux Kernel Interface: 569c609719bSwdenk CONFIG_CLOCKS_IN_MHZ 570c609719bSwdenk 571c609719bSwdenk U-Boot stores all clock information in Hz 572c609719bSwdenk internally. For binary compatibility with older Linux 573c609719bSwdenk kernels (which expect the clocks passed in the 574c609719bSwdenk bd_info data to be in MHz) the environment variable 575c609719bSwdenk "clocks_in_mhz" can be defined so that U-Boot 576c609719bSwdenk converts clock data to MHZ before passing it to the 577c609719bSwdenk Linux kernel. 578c609719bSwdenk When CONFIG_CLOCKS_IN_MHZ is defined, a definition of 579c609719bSwdenk "clocks_in_mhz=1" is automatically included in the 580c609719bSwdenk default environment. 581c609719bSwdenk 5825da627a4Swdenk CONFIG_MEMSIZE_IN_BYTES [relevant for MIPS only] 5835da627a4Swdenk 58411ccc33fSMarcel Ziswiler When transferring memsize parameter to linux, some versions 5855da627a4Swdenk expect it to be in bytes, others in MB. 5865da627a4Swdenk Define CONFIG_MEMSIZE_IN_BYTES to make it in bytes. 5875da627a4Swdenk 588fec6d9eeSGerald Van Baren CONFIG_OF_LIBFDT 589f57f70aaSWolfgang Denk 590f57f70aaSWolfgang Denk New kernel versions are expecting firmware settings to be 591213bf8c8SGerald Van Baren passed using flattened device trees (based on open firmware 592213bf8c8SGerald Van Baren concepts). 593213bf8c8SGerald Van Baren 594213bf8c8SGerald Van Baren CONFIG_OF_LIBFDT 595213bf8c8SGerald Van Baren * New libfdt-based support 596213bf8c8SGerald Van Baren * Adds the "fdt" command 5973bb342fcSKim Phillips * The bootm command automatically updates the fdt 598213bf8c8SGerald Van Baren 599b55ae402SMarcel Ziswiler OF_CPU - The proper name of the cpus node (only required for 600b55ae402SMarcel Ziswiler MPC512X and MPC5xxx based boards). 601b55ae402SMarcel Ziswiler OF_SOC - The proper name of the soc node (only required for 602b55ae402SMarcel Ziswiler MPC512X and MPC5xxx based boards). 603f57f70aaSWolfgang Denk OF_TBCLK - The timebase frequency. 604c2871f03SKumar Gala OF_STDOUT_PATH - The path to the console device 605f57f70aaSWolfgang Denk 60611ccc33fSMarcel Ziswiler boards with QUICC Engines require OF_QE to set UCC MAC 60711ccc33fSMarcel Ziswiler addresses 6083bb342fcSKim Phillips 6094e253137SKumar Gala CONFIG_OF_BOARD_SETUP 6104e253137SKumar Gala 6114e253137SKumar Gala Board code has addition modification that it wants to make 6124e253137SKumar Gala to the flat device tree before handing it off to the kernel 6136705d81eSwdenk 6140267768eSMatthew McClintock CONFIG_OF_BOOT_CPU 6150267768eSMatthew McClintock 61611ccc33fSMarcel Ziswiler This define fills in the correct boot CPU in the boot 6170267768eSMatthew McClintock param header, the default value is zero if undefined. 6180267768eSMatthew McClintock 6193887c3fbSHeiko Schocher CONFIG_OF_IDE_FIXUP 6203887c3fbSHeiko Schocher 6213887c3fbSHeiko Schocher U-Boot can detect if an IDE device is present or not. 6223887c3fbSHeiko Schocher If not, and this new config option is activated, U-Boot 6233887c3fbSHeiko Schocher removes the ATA node from the DTS before booting Linux, 6243887c3fbSHeiko Schocher so the Linux IDE driver does not probe the device and 6253887c3fbSHeiko Schocher crash. This is needed for buggy hardware (uc101) where 6263887c3fbSHeiko Schocher no pull down resistor is connected to the signal IDE5V_DD7. 6273887c3fbSHeiko Schocher 6287eb29398SIgor Grinberg CONFIG_MACH_TYPE [relevant for ARM only][mandatory] 6297eb29398SIgor Grinberg 6307eb29398SIgor Grinberg This setting is mandatory for all boards that have only one 6317eb29398SIgor Grinberg machine type and must be used to specify the machine type 6327eb29398SIgor Grinberg number as it appears in the ARM machine registry 6337eb29398SIgor Grinberg (see http://www.arm.linux.org.uk/developer/machines/). 6347eb29398SIgor Grinberg Only boards that have multiple machine types supported 6357eb29398SIgor Grinberg in a single configuration file and the machine type is 6367eb29398SIgor Grinberg runtime discoverable, do not have to use this setting. 6377eb29398SIgor Grinberg 6380b2f4ecaSNiklaus Giger- vxWorks boot parameters: 6390b2f4ecaSNiklaus Giger 6400b2f4ecaSNiklaus Giger bootvx constructs a valid bootline using the following 6410b2f4ecaSNiklaus Giger environments variables: bootfile, ipaddr, serverip, hostname. 6420b2f4ecaSNiklaus Giger It loads the vxWorks image pointed bootfile. 6430b2f4ecaSNiklaus Giger 6440b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_BOOT_DEVICE - The vxworks device name 6450b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_MAC_PTR - Ethernet 6 byte MA -address 6460b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_SERVERNAME - Name of the server 6470b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_BOOT_ADDR - Address of boot parameters 6480b2f4ecaSNiklaus Giger 6490b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_ADD_PARAMS 6500b2f4ecaSNiklaus Giger 6510b2f4ecaSNiklaus Giger Add it at the end of the bootline. E.g "u=username pw=secret" 6520b2f4ecaSNiklaus Giger 6530b2f4ecaSNiklaus Giger Note: If a "bootargs" environment is defined, it will overwride 6540b2f4ecaSNiklaus Giger the defaults discussed just above. 6550b2f4ecaSNiklaus Giger 6562c451f78SAneesh V- Cache Configuration: 6572c451f78SAneesh V CONFIG_SYS_ICACHE_OFF - Do not enable instruction cache in U-Boot 6582c451f78SAneesh V CONFIG_SYS_DCACHE_OFF - Do not enable data cache in U-Boot 6592c451f78SAneesh V CONFIG_SYS_L2CACHE_OFF- Do not enable L2 cache in U-Boot 6602c451f78SAneesh V 66193bc2193SAneesh V- Cache Configuration for ARM: 66293bc2193SAneesh V CONFIG_SYS_L2_PL310 - Enable support for ARM PL310 L2 cache 66393bc2193SAneesh V controller 66493bc2193SAneesh V CONFIG_SYS_PL310_BASE - Physical base address of PL310 66593bc2193SAneesh V controller register space 66693bc2193SAneesh V 6676705d81eSwdenk- Serial Ports: 66848d0192fSAndreas Engel CONFIG_PL010_SERIAL 6696705d81eSwdenk 6706705d81eSwdenk Define this if you want support for Amba PrimeCell PL010 UARTs. 6716705d81eSwdenk 67248d0192fSAndreas Engel CONFIG_PL011_SERIAL 6736705d81eSwdenk 6746705d81eSwdenk Define this if you want support for Amba PrimeCell PL011 UARTs. 6756705d81eSwdenk 6766705d81eSwdenk CONFIG_PL011_CLOCK 6776705d81eSwdenk 6786705d81eSwdenk If you have Amba PrimeCell PL011 UARTs, set this variable to 6796705d81eSwdenk the clock speed of the UARTs. 6806705d81eSwdenk 6816705d81eSwdenk CONFIG_PL01x_PORTS 6826705d81eSwdenk 6836705d81eSwdenk If you have Amba PrimeCell PL010 or PL011 UARTs on your board, 6846705d81eSwdenk define this to a list of base addresses for each (supported) 6856705d81eSwdenk port. See e.g. include/configs/versatile.h 6866705d81eSwdenk 687910f1ae3SJohn Rigby CONFIG_PL011_SERIAL_RLCR 688910f1ae3SJohn Rigby 689910f1ae3SJohn Rigby Some vendor versions of PL011 serial ports (e.g. ST-Ericsson U8500) 690910f1ae3SJohn Rigby have separate receive and transmit line control registers. Set 691910f1ae3SJohn Rigby this variable to initialize the extra register. 692910f1ae3SJohn Rigby 693910f1ae3SJohn Rigby CONFIG_PL011_SERIAL_FLUSH_ON_INIT 694910f1ae3SJohn Rigby 695910f1ae3SJohn Rigby On some platforms (e.g. U8500) U-Boot is loaded by a second stage 696910f1ae3SJohn Rigby boot loader that has already initialized the UART. Define this 697910f1ae3SJohn Rigby variable to flush the UART at init time. 698910f1ae3SJohn Rigby 6996705d81eSwdenk 700c609719bSwdenk- Console Interface: 701c609719bSwdenk Depending on board, define exactly one serial port 702c609719bSwdenk (like CONFIG_8xx_CONS_SMC1, CONFIG_8xx_CONS_SMC2, 703c609719bSwdenk CONFIG_8xx_CONS_SCC1, ...), or switch off the serial 704c609719bSwdenk console by defining CONFIG_8xx_CONS_NONE 705c609719bSwdenk 706c609719bSwdenk Note: if CONFIG_8xx_CONS_NONE is defined, the serial 707c609719bSwdenk port routines must be defined elsewhere 708c609719bSwdenk (i.e. serial_init(), serial_getc(), ...) 709c609719bSwdenk 710c609719bSwdenk CONFIG_CFB_CONSOLE 711c609719bSwdenk Enables console device for a color framebuffer. Needs following 712c53043b7SWolfgang Denk defines (cf. smiLynxEM, i8042) 713c609719bSwdenk VIDEO_FB_LITTLE_ENDIAN graphic memory organisation 714c609719bSwdenk (default big endian) 715c609719bSwdenk VIDEO_HW_RECTFILL graphic chip supports 716c609719bSwdenk rectangle fill 717c609719bSwdenk (cf. smiLynxEM) 718c609719bSwdenk VIDEO_HW_BITBLT graphic chip supports 719c609719bSwdenk bit-blit (cf. smiLynxEM) 720c609719bSwdenk VIDEO_VISIBLE_COLS visible pixel columns 721c609719bSwdenk (cols=pitch) 722c609719bSwdenk VIDEO_VISIBLE_ROWS visible pixel rows 723c609719bSwdenk VIDEO_PIXEL_SIZE bytes per pixel 724c609719bSwdenk VIDEO_DATA_FORMAT graphic data format 725c609719bSwdenk (0-5, cf. cfb_console.c) 726c609719bSwdenk VIDEO_FB_ADRS framebuffer address 727c609719bSwdenk VIDEO_KBD_INIT_FCT keyboard int fct 728c609719bSwdenk (i.e. i8042_kbd_init()) 729c609719bSwdenk VIDEO_TSTC_FCT test char fct 730c609719bSwdenk (i.e. i8042_tstc) 731c609719bSwdenk VIDEO_GETC_FCT get char fct 732c609719bSwdenk (i.e. i8042_getc) 733c609719bSwdenk CONFIG_CONSOLE_CURSOR cursor drawing on/off 734c609719bSwdenk (requires blink timer 735c609719bSwdenk cf. i8042.c) 7366d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CONSOLE_BLINK_COUNT blink interval (cf. i8042.c) 737c609719bSwdenk CONFIG_CONSOLE_TIME display time/date info in 738c609719bSwdenk upper right corner 739602ad3b3SJon Loeliger (requires CONFIG_CMD_DATE) 740c609719bSwdenk CONFIG_VIDEO_LOGO display Linux logo in 741c609719bSwdenk upper left corner 742a6c7ad2fSwdenk CONFIG_VIDEO_BMP_LOGO use bmp_logo.h instead of 743a6c7ad2fSwdenk linux_logo.h for logo. 744a6c7ad2fSwdenk Requires CONFIG_VIDEO_LOGO 745c609719bSwdenk CONFIG_CONSOLE_EXTRA_INFO 74611ccc33fSMarcel Ziswiler additional board info beside 747c609719bSwdenk the logo 748c609719bSwdenk 74933a35bbbSPali Rohár When CONFIG_CFB_CONSOLE_ANSI is defined, console will support 75033a35bbbSPali Rohár a limited number of ANSI escape sequences (cursor control, 75133a35bbbSPali Rohár erase functions and limited graphics rendition control). 75233a35bbbSPali Rohár 753c609719bSwdenk When CONFIG_CFB_CONSOLE is defined, video console is 754c609719bSwdenk default i/o. Serial console can be forced with 755c609719bSwdenk environment 'console=serial'. 756c609719bSwdenk 757a3ad8e26Swdenk When CONFIG_SILENT_CONSOLE is defined, all console 758a3ad8e26Swdenk messages (by U-Boot and Linux!) can be silenced with 759a3ad8e26Swdenk the "silent" environment variable. See 760a3ad8e26Swdenk doc/README.silent for more information. 761a3ad8e26Swdenk 76245ae2546SHeiko Schocher CONFIG_SYS_CONSOLE_BG_COL: define the backgroundcolor, default 76345ae2546SHeiko Schocher is 0x00. 76445ae2546SHeiko Schocher CONFIG_SYS_CONSOLE_FG_COL: define the foregroundcolor, default 76545ae2546SHeiko Schocher is 0xa0. 76645ae2546SHeiko Schocher 767c609719bSwdenk- Console Baudrate: 768c609719bSwdenk CONFIG_BAUDRATE - in bps 769c609719bSwdenk Select one of the baudrates listed in 7706d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BAUDRATE_TABLE, see below. 7716d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BRGCLK_PRESCALE, baudrate prescale 772c609719bSwdenk 773c92fac91SHeiko Schocher- Console Rx buffer length 774c92fac91SHeiko Schocher With CONFIG_SYS_SMC_RXBUFLEN it is possible to define 775c92fac91SHeiko Schocher the maximum receive buffer length for the SMC. 7762b3f12c2SHeiko Schocher This option is actual only for 82xx and 8xx possible. 777c92fac91SHeiko Schocher If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE 778c92fac91SHeiko Schocher must be defined, to setup the maximum idle timeout for 779c92fac91SHeiko Schocher the SMC. 780c92fac91SHeiko Schocher 7819558b48aSGraeme Russ- Pre-Console Buffer: 7829558b48aSGraeme Russ Prior to the console being initialised (i.e. serial UART 7839558b48aSGraeme Russ initialised etc) all console output is silently discarded. 7849558b48aSGraeme Russ Defining CONFIG_PRE_CONSOLE_BUFFER will cause U-Boot to 7859558b48aSGraeme Russ buffer any console messages prior to the console being 7869558b48aSGraeme Russ initialised to a buffer of size CONFIG_PRE_CON_BUF_SZ 7879558b48aSGraeme Russ bytes located at CONFIG_PRE_CON_BUF_ADDR. The buffer is 7889558b48aSGraeme Russ a circular buffer, so if more than CONFIG_PRE_CON_BUF_SZ 7899558b48aSGraeme Russ bytes are output before the console is initialised, the 7909558b48aSGraeme Russ earlier bytes are discarded. 7919558b48aSGraeme Russ 7929558b48aSGraeme Russ 'Sane' compilers will generate smaller code if 7939558b48aSGraeme Russ CONFIG_PRE_CON_BUF_SZ is a power of 2 7949558b48aSGraeme Russ 795046a37bdSSonny Rao- Safe printf() functions 796046a37bdSSonny Rao Define CONFIG_SYS_VSNPRINTF to compile in safe versions of 797046a37bdSSonny Rao the printf() functions. These are defined in 798046a37bdSSonny Rao include/vsprintf.h and include snprintf(), vsnprintf() and 799046a37bdSSonny Rao so on. Code size increase is approximately 300-500 bytes. 800046a37bdSSonny Rao If this option is not given then these functions will 801046a37bdSSonny Rao silently discard their buffer size argument - this means 802046a37bdSSonny Rao you are not getting any overflow checking in this case. 803046a37bdSSonny Rao 804c609719bSwdenk- Boot Delay: CONFIG_BOOTDELAY - in seconds 805c609719bSwdenk Delay before automatically booting the default image; 806c609719bSwdenk set to -1 to disable autoboot. 80793d7212fSJoe Hershberger set to -2 to autoboot with no delay and not check for abort 80893d7212fSJoe Hershberger (even when CONFIG_ZERO_BOOTDELAY_CHECK is defined). 809c609719bSwdenk 810c609719bSwdenk See doc/README.autoboot for these options that 811c609719bSwdenk work with CONFIG_BOOTDELAY. None are required. 812c609719bSwdenk CONFIG_BOOT_RETRY_TIME 813c609719bSwdenk CONFIG_BOOT_RETRY_MIN 814c609719bSwdenk CONFIG_AUTOBOOT_KEYED 815c609719bSwdenk CONFIG_AUTOBOOT_PROMPT 816c609719bSwdenk CONFIG_AUTOBOOT_DELAY_STR 817c609719bSwdenk CONFIG_AUTOBOOT_STOP_STR 818c609719bSwdenk CONFIG_AUTOBOOT_DELAY_STR2 819c609719bSwdenk CONFIG_AUTOBOOT_STOP_STR2 820c609719bSwdenk CONFIG_ZERO_BOOTDELAY_CHECK 821c609719bSwdenk CONFIG_RESET_TO_RETRY 822c609719bSwdenk 823c609719bSwdenk- Autoboot Command: 824c609719bSwdenk CONFIG_BOOTCOMMAND 825c609719bSwdenk Only needed when CONFIG_BOOTDELAY is enabled; 826c609719bSwdenk define a command string that is automatically executed 827c609719bSwdenk when no character is read on the console interface 828c609719bSwdenk within "Boot Delay" after reset. 829c609719bSwdenk 830c609719bSwdenk CONFIG_BOOTARGS 831c609719bSwdenk This can be used to pass arguments to the bootm 832c609719bSwdenk command. The value of CONFIG_BOOTARGS goes into the 833c609719bSwdenk environment value "bootargs". 834c609719bSwdenk 835c609719bSwdenk CONFIG_RAMBOOT and CONFIG_NFSBOOT 836c609719bSwdenk The value of these goes into the environment as 837c609719bSwdenk "ramboot" and "nfsboot" respectively, and can be used 838c609719bSwdenk as a convenience, when switching between booting from 83911ccc33fSMarcel Ziswiler RAM and NFS. 840c609719bSwdenk 841eda0ba38SHeiko Schocher- Bootcount: 842eda0ba38SHeiko Schocher CONFIG_BOOTCOUNT_LIMIT 843eda0ba38SHeiko Schocher Implements a mechanism for detecting a repeating reboot 844eda0ba38SHeiko Schocher cycle, see: 845eda0ba38SHeiko Schocher http://www.denx.de/wiki/view/DULG/UBootBootCountLimit 846eda0ba38SHeiko Schocher 847eda0ba38SHeiko Schocher CONFIG_BOOTCOUNT_ENV 848eda0ba38SHeiko Schocher If no softreset save registers are found on the hardware 849eda0ba38SHeiko Schocher "bootcount" is stored in the environment. To prevent a 850eda0ba38SHeiko Schocher saveenv on all reboots, the environment variable 851eda0ba38SHeiko Schocher "upgrade_available" is used. If "upgrade_available" is 852eda0ba38SHeiko Schocher 0, "bootcount" is always 0, if "upgrade_available" is 853eda0ba38SHeiko Schocher 1 "bootcount" is incremented in the environment. 854eda0ba38SHeiko Schocher So the Userspace Applikation must set the "upgrade_available" 855eda0ba38SHeiko Schocher and "bootcount" variable to 0, if a boot was successfully. 856eda0ba38SHeiko Schocher 857c609719bSwdenk- Pre-Boot Commands: 858c609719bSwdenk CONFIG_PREBOOT 859c609719bSwdenk 860c609719bSwdenk When this option is #defined, the existence of the 861c609719bSwdenk environment variable "preboot" will be checked 862c609719bSwdenk immediately before starting the CONFIG_BOOTDELAY 863c609719bSwdenk countdown and/or running the auto-boot command resp. 864c609719bSwdenk entering interactive mode. 865c609719bSwdenk 866c609719bSwdenk This feature is especially useful when "preboot" is 867c609719bSwdenk automatically generated or modified. For an example 868c609719bSwdenk see the LWMON board specific code: here "preboot" is 869c609719bSwdenk modified when the user holds down a certain 870c609719bSwdenk combination of keys on the (special) keyboard when 871c609719bSwdenk booting the systems 872c609719bSwdenk 873c609719bSwdenk- Serial Download Echo Mode: 874c609719bSwdenk CONFIG_LOADS_ECHO 875c609719bSwdenk If defined to 1, all characters received during a 876c609719bSwdenk serial download (using the "loads" command) are 877c609719bSwdenk echoed back. This might be needed by some terminal 878c609719bSwdenk emulations (like "cu"), but may as well just take 879c609719bSwdenk time on others. This setting #define's the initial 880c609719bSwdenk value of the "loads_echo" environment variable. 881c609719bSwdenk 882602ad3b3SJon Loeliger- Kgdb Serial Baudrate: (if CONFIG_CMD_KGDB is defined) 883c609719bSwdenk CONFIG_KGDB_BAUDRATE 884c609719bSwdenk Select one of the baudrates listed in 8856d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BAUDRATE_TABLE, see below. 886c609719bSwdenk 887c609719bSwdenk- Monitor Functions: 888602ad3b3SJon Loeliger Monitor commands can be included or excluded 889602ad3b3SJon Loeliger from the build by using the #include files 890c6c621bdSStephen Warren <config_cmd_all.h> and #undef'ing unwanted 891c6c621bdSStephen Warren commands, or using <config_cmd_default.h> 892602ad3b3SJon Loeliger and augmenting with additional #define's 893602ad3b3SJon Loeliger for wanted commands. 894c609719bSwdenk 895602ad3b3SJon Loeliger The default command configuration includes all commands 896602ad3b3SJon Loeliger except those marked below with a "*". 897602ad3b3SJon Loeliger 898602ad3b3SJon Loeliger CONFIG_CMD_ASKENV * ask for env variable 899602ad3b3SJon Loeliger CONFIG_CMD_BDI bdinfo 900602ad3b3SJon Loeliger CONFIG_CMD_BEDBUG * Include BedBug Debugger 901602ad3b3SJon Loeliger CONFIG_CMD_BMP * BMP support 902602ad3b3SJon Loeliger CONFIG_CMD_BSP * Board specific commands 903602ad3b3SJon Loeliger CONFIG_CMD_BOOTD bootd 904602ad3b3SJon Loeliger CONFIG_CMD_CACHE * icache, dcache 90508d0d6f3SMichal Simek CONFIG_CMD_CLK * clock command support 906602ad3b3SJon Loeliger CONFIG_CMD_CONSOLE coninfo 907710b9938SMike Frysinger CONFIG_CMD_CRC32 * crc32 908602ad3b3SJon Loeliger CONFIG_CMD_DATE * support for RTC, date/time... 909602ad3b3SJon Loeliger CONFIG_CMD_DHCP * DHCP support 910602ad3b3SJon Loeliger CONFIG_CMD_DIAG * Diagnostics 911a7c93104SPeter Tyser CONFIG_CMD_DS4510 * ds4510 I2C gpio commands 912a7c93104SPeter Tyser CONFIG_CMD_DS4510_INFO * ds4510 I2C info command 913a7c93104SPeter Tyser CONFIG_CMD_DS4510_MEM * ds4510 I2C eeprom/sram commansd 914a7c93104SPeter Tyser CONFIG_CMD_DS4510_RST * ds4510 I2C rst command 915602ad3b3SJon Loeliger CONFIG_CMD_DTT * Digital Therm and Thermostat 916602ad3b3SJon Loeliger CONFIG_CMD_ECHO echo arguments 917246c6922SPeter Tyser CONFIG_CMD_EDITENV edit env variable 918602ad3b3SJon Loeliger CONFIG_CMD_EEPROM * EEPROM read/write support 919602ad3b3SJon Loeliger CONFIG_CMD_ELF * bootelf, bootvx 9205e2b3e0cSJoe Hershberger CONFIG_CMD_ENV_CALLBACK * display details about env callbacks 921fffad71bSJoe Hershberger CONFIG_CMD_ENV_FLAGS * display details about env flags 92288733e2cSAndrew Ruder CONFIG_CMD_ENV_EXISTS * check existence of env variable 9230c79cda0SMike Frysinger CONFIG_CMD_EXPORTENV * export the environment 92403e2ecf6SStephen Warren CONFIG_CMD_EXT2 * ext2 command support 92503e2ecf6SStephen Warren CONFIG_CMD_EXT4 * ext4 command support 92616f4d933SStephen Warren CONFIG_CMD_FS_GENERIC * filesystem commands (e.g. load, ls) 92716f4d933SStephen Warren that work for multiple fs types 928bdab39d3SMike Frysinger CONFIG_CMD_SAVEENV saveenv 929602ad3b3SJon Loeliger CONFIG_CMD_FDC * Floppy Disk Support 93003e2ecf6SStephen Warren CONFIG_CMD_FAT * FAT command support 931602ad3b3SJon Loeliger CONFIG_CMD_FDOS * Dos diskette Support 932602ad3b3SJon Loeliger CONFIG_CMD_FLASH flinfo, erase, protect 933602ad3b3SJon Loeliger CONFIG_CMD_FPGA FPGA device initialization support 9344d98b5c8SVincent Stehlé CONFIG_CMD_FUSE * Device fuse support 93553fdc7efSAnton Staaf CONFIG_CMD_GETTIME * Get time since boot 936a641b979SMike Frysinger CONFIG_CMD_GO * the 'go' command (exec code) 937a000b795SKim Phillips CONFIG_CMD_GREPENV * search environment 938bf36c5d5SSimon Glass CONFIG_CMD_HASH * calculate hash / digest 939602ad3b3SJon Loeliger CONFIG_CMD_HWFLOW * RTS/CTS hw flow control 940602ad3b3SJon Loeliger CONFIG_CMD_I2C * I2C serial bus support 941602ad3b3SJon Loeliger CONFIG_CMD_IDE * IDE harddisk support 942602ad3b3SJon Loeliger CONFIG_CMD_IMI iminfo 9438fdf1e0fSVipin Kumar CONFIG_CMD_IMLS List all images found in NOR flash 9444d98b5c8SVincent Stehlé CONFIG_CMD_IMLS_NAND * List all images found in NAND flash 945602ad3b3SJon Loeliger CONFIG_CMD_IMMAP * IMMR dump support 9460c79cda0SMike Frysinger CONFIG_CMD_IMPORTENV * import an environment 947c167cc02SJoe Hershberger CONFIG_CMD_INI * import data from an ini file into the env 948602ad3b3SJon Loeliger CONFIG_CMD_IRQ * irqinfo 949602ad3b3SJon Loeliger CONFIG_CMD_ITEST Integer/string test of 2 values 950602ad3b3SJon Loeliger CONFIG_CMD_JFFS2 * JFFS2 Support 951602ad3b3SJon Loeliger CONFIG_CMD_KGDB * kgdb 9524d98b5c8SVincent Stehlé CONFIG_CMD_LDRINFO * ldrinfo (display Blackfin loader) 953d22c338eSJoe Hershberger CONFIG_CMD_LINK_LOCAL * link-local IP address auto-configuration 954d22c338eSJoe Hershberger (169.254.*.*) 955602ad3b3SJon Loeliger CONFIG_CMD_LOADB loadb 956602ad3b3SJon Loeliger CONFIG_CMD_LOADS loads 9574d98b5c8SVincent Stehlé CONFIG_CMD_MD5SUM * print md5 message digest 95802c9aa1dSRobin Getz (requires CONFIG_CMD_MEMORY and CONFIG_MD5) 95915a33e49SSimon Glass CONFIG_CMD_MEMINFO * Display detailed memory information 960602ad3b3SJon Loeliger CONFIG_CMD_MEMORY md, mm, nm, mw, cp, cmp, crc, base, 961a2681707SWolfgang Denk loop, loopw 9624d98b5c8SVincent Stehlé CONFIG_CMD_MEMTEST * mtest 963602ad3b3SJon Loeliger CONFIG_CMD_MISC Misc functions like sleep etc 964602ad3b3SJon Loeliger CONFIG_CMD_MMC * MMC memory mapped support 965602ad3b3SJon Loeliger CONFIG_CMD_MII * MII utility commands 96668d7d651SStefan Roese CONFIG_CMD_MTDPARTS * MTD partition support 967602ad3b3SJon Loeliger CONFIG_CMD_NAND * NAND support 968602ad3b3SJon Loeliger CONFIG_CMD_NET bootp, tftpboot, rarpboot 9694d98b5c8SVincent Stehlé CONFIG_CMD_NFS NFS support 970e92739d3SPeter Tyser CONFIG_CMD_PCA953X * PCA953x I2C gpio commands 971e92739d3SPeter Tyser CONFIG_CMD_PCA953X_INFO * PCA953x I2C gpio info command 972602ad3b3SJon Loeliger CONFIG_CMD_PCI * pciinfo 973602ad3b3SJon Loeliger CONFIG_CMD_PCMCIA * PCMCIA support 974602ad3b3SJon Loeliger CONFIG_CMD_PING * send ICMP ECHO_REQUEST to network 975602ad3b3SJon Loeliger host 976602ad3b3SJon Loeliger CONFIG_CMD_PORTIO * Port I/O 977ff048ea9SKenneth Waters CONFIG_CMD_READ * Read raw data from partition 978602ad3b3SJon Loeliger CONFIG_CMD_REGINFO * Register dump 979602ad3b3SJon Loeliger CONFIG_CMD_RUN run command in env variable 980d304931fSSimon Glass CONFIG_CMD_SANDBOX * sb command to access sandbox features 981602ad3b3SJon Loeliger CONFIG_CMD_SAVES * save S record dump 982602ad3b3SJon Loeliger CONFIG_CMD_SCSI * SCSI Support 983602ad3b3SJon Loeliger CONFIG_CMD_SDRAM * print SDRAM configuration information 984602ad3b3SJon Loeliger (requires CONFIG_CMD_I2C) 985602ad3b3SJon Loeliger CONFIG_CMD_SETGETDCR Support for DCR Register access 986602ad3b3SJon Loeliger (4xx only) 987f61ec45eSEric Nelson CONFIG_CMD_SF * Read/write/erase SPI NOR flash 9884d98b5c8SVincent Stehlé CONFIG_CMD_SHA1SUM * print sha1 memory digest 98902c9aa1dSRobin Getz (requires CONFIG_CMD_MEMORY) 9907d861d95SBob Liu CONFIG_CMD_SOFTSWITCH * Soft switch setting command for BF60x 99174de7aefSWolfgang Denk CONFIG_CMD_SOURCE "source" command Support 992602ad3b3SJon Loeliger CONFIG_CMD_SPI * SPI serial bus support 9937a83af07SLuca Ceresoli CONFIG_CMD_TFTPSRV * TFTP transfer in server mode 9941fb7cd49SSimon Glass CONFIG_CMD_TFTPPUT * TFTP put command (upload) 995da83bcd7SJoe Hershberger CONFIG_CMD_TIME * run command and report execution time (ARM specific) 996da83bcd7SJoe Hershberger CONFIG_CMD_TIMER * access to the system tick timer 997602ad3b3SJon Loeliger CONFIG_CMD_USB * USB support 998602ad3b3SJon Loeliger CONFIG_CMD_CDP * Cisco Discover Protocol support 999c8339f51SMarek Vasut CONFIG_CMD_MFSL * Microblaze FSL support 10004d98b5c8SVincent Stehlé CONFIG_CMD_XIMG Load part of Multi Image 1001c609719bSwdenk 1002c609719bSwdenk 1003c609719bSwdenk EXAMPLE: If you want all functions except of network 1004c609719bSwdenk support you can write: 1005c609719bSwdenk 1006602ad3b3SJon Loeliger #include "config_cmd_all.h" 1007602ad3b3SJon Loeliger #undef CONFIG_CMD_NET 1008c609719bSwdenk 1009213bf8c8SGerald Van Baren Other Commands: 1010213bf8c8SGerald Van Baren fdt (flattened device tree) command: CONFIG_OF_LIBFDT 1011c609719bSwdenk 1012c609719bSwdenk Note: Don't enable the "icache" and "dcache" commands 1013602ad3b3SJon Loeliger (configuration option CONFIG_CMD_CACHE) unless you know 1014c609719bSwdenk what you (and your U-Boot users) are doing. Data 1015c609719bSwdenk cache cannot be enabled on systems like the 8xx or 1016c609719bSwdenk 8260 (where accesses to the IMMR region must be 1017c609719bSwdenk uncached), and it cannot be disabled on all other 1018c609719bSwdenk systems where we (mis-) use the data cache to hold an 1019c609719bSwdenk initial stack and some data. 1020c609719bSwdenk 1021c609719bSwdenk 1022c609719bSwdenk XXX - this list needs to get updated! 1023c609719bSwdenk 1024a5ecbe62SWolfgang Denk- Regular expression support: 1025a5ecbe62SWolfgang Denk CONFIG_REGEX 1026a5ecbe62SWolfgang Denk If this variable is defined, U-Boot is linked against 1027a5ecbe62SWolfgang Denk the SLRE (Super Light Regular Expression) library, 1028a5ecbe62SWolfgang Denk which adds regex support to some commands, as for 1029a5ecbe62SWolfgang Denk example "env grep" and "setexpr". 1030a5ecbe62SWolfgang Denk 103145ba8077SSimon Glass- Device tree: 103245ba8077SSimon Glass CONFIG_OF_CONTROL 103345ba8077SSimon Glass If this variable is defined, U-Boot will use a device tree 103445ba8077SSimon Glass to configure its devices, instead of relying on statically 103545ba8077SSimon Glass compiled #defines in the board file. This option is 103645ba8077SSimon Glass experimental and only available on a few boards. The device 103745ba8077SSimon Glass tree is available in the global data as gd->fdt_blob. 103845ba8077SSimon Glass 10392c0f79e4SSimon Glass U-Boot needs to get its device tree from somewhere. This can 10402c0f79e4SSimon Glass be done using one of the two options below: 1041bbb0b128SSimon Glass 1042bbb0b128SSimon Glass CONFIG_OF_EMBED 1043bbb0b128SSimon Glass If this variable is defined, U-Boot will embed a device tree 1044bbb0b128SSimon Glass binary in its image. This device tree file should be in the 1045bbb0b128SSimon Glass board directory and called <soc>-<board>.dts. The binary file 1046bbb0b128SSimon Glass is then picked up in board_init_f() and made available through 1047bbb0b128SSimon Glass the global data structure as gd->blob. 104845ba8077SSimon Glass 10492c0f79e4SSimon Glass CONFIG_OF_SEPARATE 10502c0f79e4SSimon Glass If this variable is defined, U-Boot will build a device tree 10512c0f79e4SSimon Glass binary. It will be called u-boot.dtb. Architecture-specific 10522c0f79e4SSimon Glass code will locate it at run-time. Generally this works by: 10532c0f79e4SSimon Glass 10542c0f79e4SSimon Glass cat u-boot.bin u-boot.dtb >image.bin 10552c0f79e4SSimon Glass 10562c0f79e4SSimon Glass and in fact, U-Boot does this for you, creating a file called 10572c0f79e4SSimon Glass u-boot-dtb.bin which is useful in the common case. You can 10582c0f79e4SSimon Glass still use the individual files if you need something more 10592c0f79e4SSimon Glass exotic. 10602c0f79e4SSimon Glass 1061c609719bSwdenk- Watchdog: 1062c609719bSwdenk CONFIG_WATCHDOG 1063c609719bSwdenk If this variable is defined, it enables watchdog 10646abe6fb6SDetlev Zundel support for the SoC. There must be support in the SoC 10656abe6fb6SDetlev Zundel specific code for a watchdog. For the 8xx and 8260 10666abe6fb6SDetlev Zundel CPUs, the SIU Watchdog feature is enabled in the SYPCR 10676abe6fb6SDetlev Zundel register. When supported for a specific SoC is 10686abe6fb6SDetlev Zundel available, then no further board specific code should 10696abe6fb6SDetlev Zundel be needed to use it. 10706abe6fb6SDetlev Zundel 10716abe6fb6SDetlev Zundel CONFIG_HW_WATCHDOG 10726abe6fb6SDetlev Zundel When using a watchdog circuitry external to the used 10736abe6fb6SDetlev Zundel SoC, then define this variable and provide board 10746abe6fb6SDetlev Zundel specific code for the "hw_watchdog_reset" function. 1075c609719bSwdenk 1076c1551ea8Sstroese- U-Boot Version: 1077c1551ea8Sstroese CONFIG_VERSION_VARIABLE 1078c1551ea8Sstroese If this variable is defined, an environment variable 1079c1551ea8Sstroese named "ver" is created by U-Boot showing the U-Boot 1080c1551ea8Sstroese version as printed by the "version" command. 1081a1ea8e51SBenoît Thébaudeau Any change to this variable will be reverted at the 1082a1ea8e51SBenoît Thébaudeau next reset. 1083c1551ea8Sstroese 1084c609719bSwdenk- Real-Time Clock: 1085c609719bSwdenk 1086602ad3b3SJon Loeliger When CONFIG_CMD_DATE is selected, the type of the RTC 1087c609719bSwdenk has to be selected, too. Define exactly one of the 1088c609719bSwdenk following options: 1089c609719bSwdenk 1090c609719bSwdenk CONFIG_RTC_MPC8xx - use internal RTC of MPC8xx 1091c609719bSwdenk CONFIG_RTC_PCF8563 - use Philips PCF8563 RTC 10924e8b7544SFabio Estevam CONFIG_RTC_MC13XXX - use MC13783 or MC13892 RTC 1093c609719bSwdenk CONFIG_RTC_MC146818 - use MC146818 RTC 10941cb8e980Swdenk CONFIG_RTC_DS1307 - use Maxim, Inc. DS1307 RTC 1095c609719bSwdenk CONFIG_RTC_DS1337 - use Maxim, Inc. DS1337 RTC 10967f70e853Swdenk CONFIG_RTC_DS1338 - use Maxim, Inc. DS1338 RTC 10973bac3513Swdenk CONFIG_RTC_DS164x - use Dallas DS164x RTC 10989536dfccSTor Krill CONFIG_RTC_ISL1208 - use Intersil ISL1208 RTC 10994c0d4c3bSwdenk CONFIG_RTC_MAX6900 - use Maxim, Inc. MAX6900 RTC 11006d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_RTC_DS1337_NOOSC - Turn off the OSC output for DS1337 110171d19f30SHeiko Schocher CONFIG_SYS_RV3029_TCR - enable trickle charger on 110271d19f30SHeiko Schocher RV3029 RTC. 1103c609719bSwdenk 1104b37c7e5eSwdenk Note that if the RTC uses I2C, then the I2C interface 1105b37c7e5eSwdenk must also be configured. See I2C Support, below. 1106b37c7e5eSwdenk 1107e92739d3SPeter Tyser- GPIO Support: 1108e92739d3SPeter Tyser CONFIG_PCA953X - use NXP's PCA953X series I2C GPIO 1109e92739d3SPeter Tyser 11105dec49caSChris Packham The CONFIG_SYS_I2C_PCA953X_WIDTH option specifies a list of 11115dec49caSChris Packham chip-ngpio pairs that tell the PCA953X driver the number of 11125dec49caSChris Packham pins supported by a particular chip. 11135dec49caSChris Packham 1114e92739d3SPeter Tyser Note that if the GPIO device uses I2C, then the I2C interface 1115e92739d3SPeter Tyser must also be configured. See I2C Support, below. 1116e92739d3SPeter Tyser 1117c609719bSwdenk- Timestamp Support: 1118c609719bSwdenk 1119c609719bSwdenk When CONFIG_TIMESTAMP is selected, the timestamp 1120c609719bSwdenk (date and time) of an image is printed by image 1121c609719bSwdenk commands like bootm or iminfo. This option is 1122602ad3b3SJon Loeliger automatically enabled when you select CONFIG_CMD_DATE . 1123c609719bSwdenk 1124923c46f9SKarl O. Pinc- Partition Labels (disklabels) Supported: 1125923c46f9SKarl O. Pinc Zero or more of the following: 1126923c46f9SKarl O. Pinc CONFIG_MAC_PARTITION Apple's MacOS partition table. 1127923c46f9SKarl O. Pinc CONFIG_DOS_PARTITION MS Dos partition table, traditional on the 1128923c46f9SKarl O. Pinc Intel architecture, USB sticks, etc. 1129923c46f9SKarl O. Pinc CONFIG_ISO_PARTITION ISO partition table, used on CDROM etc. 1130923c46f9SKarl O. Pinc CONFIG_EFI_PARTITION GPT partition table, common when EFI is the 1131923c46f9SKarl O. Pinc bootloader. Note 2TB partition limit; see 1132923c46f9SKarl O. Pinc disk/part_efi.c 1133923c46f9SKarl O. Pinc CONFIG_MTD_PARTITIONS Memory Technology Device partition table. 1134c609719bSwdenk 1135602ad3b3SJon Loeliger If IDE or SCSI support is enabled (CONFIG_CMD_IDE or 1136218ca724SWolfgang Denk CONFIG_CMD_SCSI) you must configure support for at 1137923c46f9SKarl O. Pinc least one non-MTD partition type as well. 1138c609719bSwdenk 1139c609719bSwdenk- IDE Reset method: 11404d13cbadSwdenk CONFIG_IDE_RESET_ROUTINE - this is defined in several 11414d13cbadSwdenk board configurations files but used nowhere! 1142c609719bSwdenk 11434d13cbadSwdenk CONFIG_IDE_RESET - is this is defined, IDE Reset will 11444d13cbadSwdenk be performed by calling the function 11454d13cbadSwdenk ide_set_reset(int reset) 11464d13cbadSwdenk which has to be defined in a board specific file 1147c609719bSwdenk 1148c609719bSwdenk- ATAPI Support: 1149c609719bSwdenk CONFIG_ATAPI 1150c609719bSwdenk 1151c609719bSwdenk Set this to enable ATAPI support. 1152c609719bSwdenk 1153c40b2956Swdenk- LBA48 Support 1154c40b2956Swdenk CONFIG_LBA48 1155c40b2956Swdenk 1156c40b2956Swdenk Set this to enable support for disks larger than 137GB 11574b142febSHeiko Schocher Also look at CONFIG_SYS_64BIT_LBA. 1158c40b2956Swdenk Whithout these , LBA48 support uses 32bit variables and will 'only' 1159c40b2956Swdenk support disks up to 2.1TB. 1160c40b2956Swdenk 11616d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_64BIT_LBA: 1162c40b2956Swdenk When enabled, makes the IDE subsystem use 64bit sector addresses. 1163c40b2956Swdenk Default is 32bit. 1164c40b2956Swdenk 1165c609719bSwdenk- SCSI Support: 1166c609719bSwdenk At the moment only there is only support for the 1167c609719bSwdenk SYM53C8XX SCSI controller; define 1168c609719bSwdenk CONFIG_SCSI_SYM53C8XX to enable it. 1169c609719bSwdenk 11706d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_LUN [8], CONFIG_SYS_SCSI_MAX_SCSI_ID [7] and 11716d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_DEVICE [CONFIG_SYS_SCSI_MAX_SCSI_ID * 11726d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_LUN] can be adjusted to define the 1173c609719bSwdenk maximum numbers of LUNs, SCSI ID's and target 1174c609719bSwdenk devices. 11756d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_SYM53C8XX_CCF to fix clock timing (80Mhz) 1176c609719bSwdenk 1177447c031bSStefan Reinauer The environment variable 'scsidevs' is set to the number of 1178447c031bSStefan Reinauer SCSI devices found during the last scan. 1179447c031bSStefan Reinauer 1180c609719bSwdenk- NETWORK Support (PCI): 1181682011ffSwdenk CONFIG_E1000 1182ce5207e1SKyle Moffett Support for Intel 8254x/8257x gigabit chips. 1183ce5207e1SKyle Moffett 1184ce5207e1SKyle Moffett CONFIG_E1000_SPI 1185ce5207e1SKyle Moffett Utility code for direct access to the SPI bus on Intel 8257x. 1186ce5207e1SKyle Moffett This does not do anything useful unless you set at least one 1187ce5207e1SKyle Moffett of CONFIG_CMD_E1000 or CONFIG_E1000_SPI_GENERIC. 1188ce5207e1SKyle Moffett 1189ce5207e1SKyle Moffett CONFIG_E1000_SPI_GENERIC 1190ce5207e1SKyle Moffett Allow generic access to the SPI bus on the Intel 8257x, for 1191ce5207e1SKyle Moffett example with the "sspi" command. 1192ce5207e1SKyle Moffett 1193ce5207e1SKyle Moffett CONFIG_CMD_E1000 1194ce5207e1SKyle Moffett Management command for E1000 devices. When used on devices 1195ce5207e1SKyle Moffett with SPI support you can reprogram the EEPROM from U-Boot. 1196682011ffSwdenk 1197ac3315c2SAndre Schwarz CONFIG_E1000_FALLBACK_MAC 119811ccc33fSMarcel Ziswiler default MAC for empty EEPROM after production. 1199ac3315c2SAndre Schwarz 1200c609719bSwdenk CONFIG_EEPRO100 1201c609719bSwdenk Support for Intel 82557/82559/82559ER chips. 120211ccc33fSMarcel Ziswiler Optional CONFIG_EEPRO100_SROM_WRITE enables EEPROM 1203c609719bSwdenk write routine for first time initialisation. 1204c609719bSwdenk 1205c609719bSwdenk CONFIG_TULIP 1206c609719bSwdenk Support for Digital 2114x chips. 1207c609719bSwdenk Optional CONFIG_TULIP_SELECT_MEDIA for board specific 1208c609719bSwdenk modem chip initialisation (KS8761/QS6611). 1209c609719bSwdenk 1210c609719bSwdenk CONFIG_NATSEMI 1211c609719bSwdenk Support for National dp83815 chips. 1212c609719bSwdenk 1213c609719bSwdenk CONFIG_NS8382X 1214c609719bSwdenk Support for National dp8382[01] gigabit chips. 1215c609719bSwdenk 121645219c46Swdenk- NETWORK Support (other): 121745219c46Swdenk 1218c041e9d2SJens Scharsig CONFIG_DRIVER_AT91EMAC 1219c041e9d2SJens Scharsig Support for AT91RM9200 EMAC. 1220c041e9d2SJens Scharsig 1221c041e9d2SJens Scharsig CONFIG_RMII 1222c041e9d2SJens Scharsig Define this to use reduced MII inteface 1223c041e9d2SJens Scharsig 1224c041e9d2SJens Scharsig CONFIG_DRIVER_AT91EMAC_QUIET 1225c041e9d2SJens Scharsig If this defined, the driver is quiet. 1226c041e9d2SJens Scharsig The driver doen't show link status messages. 1227c041e9d2SJens Scharsig 1228efdd7319SRob Herring CONFIG_CALXEDA_XGMAC 1229efdd7319SRob Herring Support for the Calxeda XGMAC device 1230efdd7319SRob Herring 12313bb46d23SAshok CONFIG_LAN91C96 123245219c46Swdenk Support for SMSC's LAN91C96 chips. 123345219c46Swdenk 123445219c46Swdenk CONFIG_LAN91C96_BASE 123545219c46Swdenk Define this to hold the physical address 123645219c46Swdenk of the LAN91C96's I/O space 123745219c46Swdenk 123845219c46Swdenk CONFIG_LAN91C96_USE_32_BIT 123945219c46Swdenk Define this to enable 32 bit addressing 124045219c46Swdenk 12413bb46d23SAshok CONFIG_SMC91111 1242f39748aeSwdenk Support for SMSC's LAN91C111 chip 1243f39748aeSwdenk 1244f39748aeSwdenk CONFIG_SMC91111_BASE 1245f39748aeSwdenk Define this to hold the physical address 1246f39748aeSwdenk of the device (I/O space) 1247f39748aeSwdenk 1248f39748aeSwdenk CONFIG_SMC_USE_32_BIT 1249f39748aeSwdenk Define this if data bus is 32 bits 1250f39748aeSwdenk 1251f39748aeSwdenk CONFIG_SMC_USE_IOFUNCS 1252f39748aeSwdenk Define this to use i/o functions instead of macros 1253f39748aeSwdenk (some hardware wont work with macros) 1254f39748aeSwdenk 1255dc02badaSHeiko Schocher CONFIG_DRIVER_TI_EMAC 1256dc02badaSHeiko Schocher Support for davinci emac 1257dc02badaSHeiko Schocher 1258dc02badaSHeiko Schocher CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT 1259dc02badaSHeiko Schocher Define this if you have more then 3 PHYs. 1260dc02badaSHeiko Schocher 1261b3dbf4a5SMacpaul Lin CONFIG_FTGMAC100 1262b3dbf4a5SMacpaul Lin Support for Faraday's FTGMAC100 Gigabit SoC Ethernet 1263b3dbf4a5SMacpaul Lin 1264b3dbf4a5SMacpaul Lin CONFIG_FTGMAC100_EGIGA 1265b3dbf4a5SMacpaul Lin Define this to use GE link update with gigabit PHY. 1266b3dbf4a5SMacpaul Lin Define this if FTGMAC100 is connected to gigabit PHY. 1267b3dbf4a5SMacpaul Lin If your system has 10/100 PHY only, it might not occur 1268b3dbf4a5SMacpaul Lin wrong behavior. Because PHY usually return timeout or 1269b3dbf4a5SMacpaul Lin useless data when polling gigabit status and gigabit 1270b3dbf4a5SMacpaul Lin control registers. This behavior won't affect the 1271b3dbf4a5SMacpaul Lin correctnessof 10/100 link speed update. 1272b3dbf4a5SMacpaul Lin 1273c2fff331SMike Rapoport CONFIG_SMC911X 1274557b377dSJens Gehrlein Support for SMSC's LAN911x and LAN921x chips 1275557b377dSJens Gehrlein 1276c2fff331SMike Rapoport CONFIG_SMC911X_BASE 1277557b377dSJens Gehrlein Define this to hold the physical address 1278557b377dSJens Gehrlein of the device (I/O space) 1279557b377dSJens Gehrlein 1280c2fff331SMike Rapoport CONFIG_SMC911X_32_BIT 1281557b377dSJens Gehrlein Define this if data bus is 32 bits 1282557b377dSJens Gehrlein 1283c2fff331SMike Rapoport CONFIG_SMC911X_16_BIT 1284557b377dSJens Gehrlein Define this if data bus is 16 bits. If your processor 1285557b377dSJens Gehrlein automatically converts one 32 bit word to two 16 bit 1286c2fff331SMike Rapoport words you may also try CONFIG_SMC911X_32_BIT. 1287557b377dSJens Gehrlein 12883d0075faSYoshihiro Shimoda CONFIG_SH_ETHER 12893d0075faSYoshihiro Shimoda Support for Renesas on-chip Ethernet controller 12903d0075faSYoshihiro Shimoda 12913d0075faSYoshihiro Shimoda CONFIG_SH_ETHER_USE_PORT 12923d0075faSYoshihiro Shimoda Define the number of ports to be used 12933d0075faSYoshihiro Shimoda 12943d0075faSYoshihiro Shimoda CONFIG_SH_ETHER_PHY_ADDR 12953d0075faSYoshihiro Shimoda Define the ETH PHY's address 12963d0075faSYoshihiro Shimoda 129768260aabSYoshihiro Shimoda CONFIG_SH_ETHER_CACHE_WRITEBACK 129868260aabSYoshihiro Shimoda If this option is set, the driver enables cache flush. 129968260aabSYoshihiro Shimoda 13005e124724SVadim Bendebury- TPM Support: 130190899cc0SChe-liang Chiou CONFIG_TPM 130290899cc0SChe-liang Chiou Support TPM devices. 130390899cc0SChe-liang Chiou 13041b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C 13051b393db5STom Wai-Hong Tam Support for i2c bus TPM devices. Only one device 13061b393db5STom Wai-Hong Tam per system is supported at this time. 13071b393db5STom Wai-Hong Tam 13081b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_BUS_NUMBER 13091b393db5STom Wai-Hong Tam Define the the i2c bus number for the TPM device 13101b393db5STom Wai-Hong Tam 13111b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_SLAVE_ADDRESS 13121b393db5STom Wai-Hong Tam Define the TPM's address on the i2c bus 13131b393db5STom Wai-Hong Tam 13141b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_BURST_LIMITATION 13151b393db5STom Wai-Hong Tam Define the burst count bytes upper limit 13161b393db5STom Wai-Hong Tam 1317c01939c7SDirk Eibach CONFIG_TPM_ATMEL_TWI 1318c01939c7SDirk Eibach Support for Atmel TWI TPM device. Requires I2C support. 1319c01939c7SDirk Eibach 132090899cc0SChe-liang Chiou CONFIG_TPM_TIS_LPC 13215e124724SVadim Bendebury Support for generic parallel port TPM devices. Only one device 13225e124724SVadim Bendebury per system is supported at this time. 13235e124724SVadim Bendebury 13245e124724SVadim Bendebury CONFIG_TPM_TIS_BASE_ADDRESS 13255e124724SVadim Bendebury Base address where the generic TPM device is mapped 13265e124724SVadim Bendebury to. Contemporary x86 systems usually map it at 13275e124724SVadim Bendebury 0xfed40000. 13285e124724SVadim Bendebury 1329be6c1529SReinhard Pfau CONFIG_CMD_TPM 1330be6c1529SReinhard Pfau Add tpm monitor functions. 1331be6c1529SReinhard Pfau Requires CONFIG_TPM. If CONFIG_TPM_AUTH_SESSIONS is set, also 1332be6c1529SReinhard Pfau provides monitor access to authorized functions. 1333be6c1529SReinhard Pfau 1334be6c1529SReinhard Pfau CONFIG_TPM 1335be6c1529SReinhard Pfau Define this to enable the TPM support library which provides 1336be6c1529SReinhard Pfau functional interfaces to some TPM commands. 1337be6c1529SReinhard Pfau Requires support for a TPM device. 1338be6c1529SReinhard Pfau 1339be6c1529SReinhard Pfau CONFIG_TPM_AUTH_SESSIONS 1340be6c1529SReinhard Pfau Define this to enable authorized functions in the TPM library. 1341be6c1529SReinhard Pfau Requires CONFIG_TPM and CONFIG_SHA1. 1342be6c1529SReinhard Pfau 1343c609719bSwdenk- USB Support: 1344c609719bSwdenk At the moment only the UHCI host controller is 13454d13cbadSwdenk supported (PIP405, MIP405, MPC5200); define 1346c609719bSwdenk CONFIG_USB_UHCI to enable it. 1347c609719bSwdenk define CONFIG_USB_KEYBOARD to enable the USB Keyboard 134830d56faeSwdenk and define CONFIG_USB_STORAGE to enable the USB 1349c609719bSwdenk storage devices. 1350c609719bSwdenk Note: 1351c609719bSwdenk Supported are USB Keyboards and USB Floppy drives 1352c609719bSwdenk (TEAC FD-05PUB). 13534d13cbadSwdenk MPC5200 USB requires additional defines: 13544d13cbadSwdenk CONFIG_USB_CLOCK 13554d13cbadSwdenk for 528 MHz Clock: 0x0001bbbb 1356307ecb6dSEric Millbrandt CONFIG_PSC3_USB 1357307ecb6dSEric Millbrandt for USB on PSC3 13584d13cbadSwdenk CONFIG_USB_CONFIG 13594d13cbadSwdenk for differential drivers: 0x00001000 13604d13cbadSwdenk for single ended drivers: 0x00005000 1361307ecb6dSEric Millbrandt for differential drivers on PSC3: 0x00000100 1362307ecb6dSEric Millbrandt for single ended drivers on PSC3: 0x00004100 13636d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_EVENT_POLL 1364fdcfaa1bSZhang Wei May be defined to allow interrupt polling 1365fdcfaa1bSZhang Wei instead of using asynchronous interrupts 13664d13cbadSwdenk 13679ab4ce22SSimon Glass CONFIG_USB_EHCI_TXFIFO_THRESH enables setting of the 13689ab4ce22SSimon Glass txfilltuning field in the EHCI controller on reset. 13699ab4ce22SSimon Glass 1370aa155058SKuo-Jung Su CONFIG_USB_HUB_MIN_POWER_ON_DELAY defines the minimum 1371aa155058SKuo-Jung Su interval for usb hub power-on delay.(minimum 100msec) 1372aa155058SKuo-Jung Su 137316c8d5e7SWolfgang Denk- USB Device: 137416c8d5e7SWolfgang Denk Define the below if you wish to use the USB console. 137516c8d5e7SWolfgang Denk Once firmware is rebuilt from a serial console issue the 137616c8d5e7SWolfgang Denk command "setenv stdin usbtty; setenv stdout usbtty" and 137711ccc33fSMarcel Ziswiler attach your USB cable. The Unix command "dmesg" should print 137816c8d5e7SWolfgang Denk it has found a new device. The environment variable usbtty 137916c8d5e7SWolfgang Denk can be set to gserial or cdc_acm to enable your device to 138016c8d5e7SWolfgang Denk appear to a USB host as a Linux gserial device or a 138116c8d5e7SWolfgang Denk Common Device Class Abstract Control Model serial device. 138216c8d5e7SWolfgang Denk If you select usbtty = gserial you should be able to enumerate 138316c8d5e7SWolfgang Denk a Linux host by 138416c8d5e7SWolfgang Denk # modprobe usbserial vendor=0xVendorID product=0xProductID 138516c8d5e7SWolfgang Denk else if using cdc_acm, simply setting the environment 138616c8d5e7SWolfgang Denk variable usbtty to be cdc_acm should suffice. The following 138716c8d5e7SWolfgang Denk might be defined in YourBoardName.h 138816c8d5e7SWolfgang Denk 138916c8d5e7SWolfgang Denk CONFIG_USB_DEVICE 139016c8d5e7SWolfgang Denk Define this to build a UDC device 139116c8d5e7SWolfgang Denk 139216c8d5e7SWolfgang Denk CONFIG_USB_TTY 139316c8d5e7SWolfgang Denk Define this to have a tty type of device available to 139416c8d5e7SWolfgang Denk talk to the UDC device 139516c8d5e7SWolfgang Denk 1396f9da0f89SVipin KUMAR CONFIG_USBD_HS 1397f9da0f89SVipin KUMAR Define this to enable the high speed support for usb 1398f9da0f89SVipin KUMAR device and usbtty. If this feature is enabled, a routine 1399f9da0f89SVipin KUMAR int is_usbd_high_speed(void) 1400f9da0f89SVipin KUMAR also needs to be defined by the driver to dynamically poll 1401f9da0f89SVipin KUMAR whether the enumeration has succeded at high speed or full 1402f9da0f89SVipin KUMAR speed. 1403f9da0f89SVipin KUMAR 14046d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CONSOLE_IS_IN_ENV 140516c8d5e7SWolfgang Denk Define this if you want stdin, stdout &/or stderr to 140616c8d5e7SWolfgang Denk be set to usbtty. 140716c8d5e7SWolfgang Denk 140816c8d5e7SWolfgang Denk mpc8xx: 14096d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_EXTC_CLK 0xBLAH 141016c8d5e7SWolfgang Denk Derive USB clock from external clock "blah" 14116d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_USB_EXTC_CLK 0x02 141216c8d5e7SWolfgang Denk 14136d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_BRG_CLK 0xBLAH 141416c8d5e7SWolfgang Denk Derive USB clock from brgclk 14156d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_USB_BRG_CLK 0x04 141616c8d5e7SWolfgang Denk 141716c8d5e7SWolfgang Denk If you have a USB-IF assigned VendorID then you may wish to 141816c8d5e7SWolfgang Denk define your own vendor specific values either in BoardName.h 141916c8d5e7SWolfgang Denk or directly in usbd_vendor_info.h. If you don't define 142016c8d5e7SWolfgang Denk CONFIG_USBD_MANUFACTURER, CONFIG_USBD_PRODUCT_NAME, 142116c8d5e7SWolfgang Denk CONFIG_USBD_VENDORID and CONFIG_USBD_PRODUCTID, then U-Boot 142216c8d5e7SWolfgang Denk should pretend to be a Linux device to it's target host. 142316c8d5e7SWolfgang Denk 142416c8d5e7SWolfgang Denk CONFIG_USBD_MANUFACTURER 142516c8d5e7SWolfgang Denk Define this string as the name of your company for 142616c8d5e7SWolfgang Denk - CONFIG_USBD_MANUFACTURER "my company" 142716c8d5e7SWolfgang Denk 142816c8d5e7SWolfgang Denk CONFIG_USBD_PRODUCT_NAME 142916c8d5e7SWolfgang Denk Define this string as the name of your product 143016c8d5e7SWolfgang Denk - CONFIG_USBD_PRODUCT_NAME "acme usb device" 143116c8d5e7SWolfgang Denk 143216c8d5e7SWolfgang Denk CONFIG_USBD_VENDORID 143316c8d5e7SWolfgang Denk Define this as your assigned Vendor ID from the USB 143416c8d5e7SWolfgang Denk Implementors Forum. This *must* be a genuine Vendor ID 143516c8d5e7SWolfgang Denk to avoid polluting the USB namespace. 143616c8d5e7SWolfgang Denk - CONFIG_USBD_VENDORID 0xFFFF 143716c8d5e7SWolfgang Denk 143816c8d5e7SWolfgang Denk CONFIG_USBD_PRODUCTID 143916c8d5e7SWolfgang Denk Define this as the unique Product ID 144016c8d5e7SWolfgang Denk for your device 144116c8d5e7SWolfgang Denk - CONFIG_USBD_PRODUCTID 0xFFFF 1442c609719bSwdenk 1443351e9b20SPrzemyslaw Marczak Some USB device drivers may need to check USB cable attachment. 1444351e9b20SPrzemyslaw Marczak In this case you can enable following config in BoardName.h: 1445351e9b20SPrzemyslaw Marczak CONFIG_USB_CABLE_CHECK 1446351e9b20SPrzemyslaw Marczak This enables function definition: 1447351e9b20SPrzemyslaw Marczak - usb_cable_connected() in include/usb.h 1448351e9b20SPrzemyslaw Marczak Implementation of this function is board-specific. 1449351e9b20SPrzemyslaw Marczak 1450d70a560fSIgor Grinberg- ULPI Layer Support: 1451d70a560fSIgor Grinberg The ULPI (UTMI Low Pin (count) Interface) PHYs are supported via 1452d70a560fSIgor Grinberg the generic ULPI layer. The generic layer accesses the ULPI PHY 1453d70a560fSIgor Grinberg via the platform viewport, so you need both the genric layer and 1454d70a560fSIgor Grinberg the viewport enabled. Currently only Chipidea/ARC based 1455d70a560fSIgor Grinberg viewport is supported. 1456d70a560fSIgor Grinberg To enable the ULPI layer support, define CONFIG_USB_ULPI and 1457d70a560fSIgor Grinberg CONFIG_USB_ULPI_VIEWPORT in your board configuration file. 14586d365ea0SLucas Stach If your ULPI phy needs a different reference clock than the 14596d365ea0SLucas Stach standard 24 MHz then you have to define CONFIG_ULPI_REF_CLK to 14606d365ea0SLucas Stach the appropriate value in Hz. 1461c609719bSwdenk 1462c609719bSwdenk- MMC Support: 1463c609719bSwdenk The MMC controller on the Intel PXA is supported. To 1464c609719bSwdenk enable this define CONFIG_MMC. The MMC can be 1465c609719bSwdenk accessed from the boot prompt by mapping the device 1466c609719bSwdenk to physical memory similar to flash. Command line is 1467602ad3b3SJon Loeliger enabled with CONFIG_CMD_MMC. The MMC driver also works with 1468602ad3b3SJon Loeliger the FAT fs. This is enabled with CONFIG_CMD_FAT. 1469c609719bSwdenk 1470afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF 1471afb35666SYoshihiro Shimoda Support for Renesas on-chip MMCIF controller 1472afb35666SYoshihiro Shimoda 1473afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF_ADDR 1474afb35666SYoshihiro Shimoda Define the base address of MMCIF registers 1475afb35666SYoshihiro Shimoda 1476afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF_CLK 1477afb35666SYoshihiro Shimoda Define the clock frequency for MMCIF 1478afb35666SYoshihiro Shimoda 1479b3ba6e94STom Rini- USB Device Firmware Update (DFU) class support: 1480b3ba6e94STom Rini CONFIG_DFU_FUNCTION 1481b3ba6e94STom Rini This enables the USB portion of the DFU USB class 1482b3ba6e94STom Rini 1483b3ba6e94STom Rini CONFIG_CMD_DFU 1484b3ba6e94STom Rini This enables the command "dfu" which is used to have 1485b3ba6e94STom Rini U-Boot create a DFU class device via USB. This command 1486b3ba6e94STom Rini requires that the "dfu_alt_info" environment variable be 1487b3ba6e94STom Rini set and define the alt settings to expose to the host. 1488b3ba6e94STom Rini 1489b3ba6e94STom Rini CONFIG_DFU_MMC 1490b3ba6e94STom Rini This enables support for exposing (e)MMC devices via DFU. 1491b3ba6e94STom Rini 1492c6631764SPantelis Antoniou CONFIG_DFU_NAND 1493c6631764SPantelis Antoniou This enables support for exposing NAND devices via DFU. 1494c6631764SPantelis Antoniou 1495a9479f04SAfzal Mohammed CONFIG_DFU_RAM 1496a9479f04SAfzal Mohammed This enables support for exposing RAM via DFU. 1497a9479f04SAfzal Mohammed Note: DFU spec refer to non-volatile memory usage, but 1498a9479f04SAfzal Mohammed allow usages beyond the scope of spec - here RAM usage, 1499a9479f04SAfzal Mohammed one that would help mostly the developer. 1500a9479f04SAfzal Mohammed 1501e7e75c70SHeiko Schocher CONFIG_SYS_DFU_DATA_BUF_SIZE 1502e7e75c70SHeiko Schocher Dfu transfer uses a buffer before writing data to the 1503e7e75c70SHeiko Schocher raw storage device. Make the size (in bytes) of this buffer 1504e7e75c70SHeiko Schocher configurable. The size of this buffer is also configurable 1505e7e75c70SHeiko Schocher through the "dfu_bufsiz" environment variable. 1506e7e75c70SHeiko Schocher 1507ea2453d5SPantelis Antoniou CONFIG_SYS_DFU_MAX_FILE_SIZE 1508ea2453d5SPantelis Antoniou When updating files rather than the raw storage device, 1509ea2453d5SPantelis Antoniou we use a static buffer to copy the file into and then write 1510ea2453d5SPantelis Antoniou the buffer once we've been given the whole file. Define 1511ea2453d5SPantelis Antoniou this to the maximum filesize (in bytes) for the buffer. 1512ea2453d5SPantelis Antoniou Default is 4 MiB if undefined. 1513ea2453d5SPantelis Antoniou 15146705d81eSwdenk- Journaling Flash filesystem support: 15156705d81eSwdenk CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE, 15166705d81eSwdenk CONFIG_JFFS2_NAND_DEV 15176705d81eSwdenk Define these for a default partition on a NAND device 15186705d81eSwdenk 15196d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS2_FIRST_SECTOR, 15206d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS2_FIRST_BANK, CONFIG_SYS_JFFS2_NUM_BANKS 15216705d81eSwdenk Define these for a default partition on a NOR device 15226705d81eSwdenk 15236d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS_CUSTOM_PART 15246705d81eSwdenk Define this to create an own partition. You have to provide a 15256705d81eSwdenk function struct part_info* jffs2_part_info(int part_num) 15266705d81eSwdenk 15276705d81eSwdenk If you define only one JFFS2 partition you may also want to 15286d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_JFFS_SINGLE_PART 1 15296705d81eSwdenk to disable the command chpart. This is the default when you 15306705d81eSwdenk have not defined a custom partition 15316705d81eSwdenk 1532c30a15e5SDonggeun Kim- FAT(File Allocation Table) filesystem write function support: 1533c30a15e5SDonggeun Kim CONFIG_FAT_WRITE 1534656f4c65SDonggeun Kim 1535656f4c65SDonggeun Kim Define this to enable support for saving memory data as a 1536656f4c65SDonggeun Kim file in FAT formatted partition. 1537656f4c65SDonggeun Kim 1538656f4c65SDonggeun Kim This will also enable the command "fatwrite" enabling the 1539656f4c65SDonggeun Kim user to write files to FAT. 1540c30a15e5SDonggeun Kim 154184cd9327SGabe BlackCBFS (Coreboot Filesystem) support 154284cd9327SGabe Black CONFIG_CMD_CBFS 154384cd9327SGabe Black 154484cd9327SGabe Black Define this to enable support for reading from a Coreboot 154584cd9327SGabe Black filesystem. Available commands are cbfsinit, cbfsinfo, cbfsls 154684cd9327SGabe Black and cbfsload. 154784cd9327SGabe Black 1548c609719bSwdenk- Keyboard Support: 1549c609719bSwdenk CONFIG_ISA_KEYBOARD 1550c609719bSwdenk 1551c609719bSwdenk Define this to enable standard (PC-Style) keyboard 1552c609719bSwdenk support 1553c609719bSwdenk 1554c609719bSwdenk CONFIG_I8042_KBD 1555c609719bSwdenk Standard PC keyboard driver with US (is default) and 1556c609719bSwdenk GERMAN key layout (switch via environment 'keymap=de') support. 1557c609719bSwdenk Export function i8042_kbd_init, i8042_tstc and i8042_getc 1558c609719bSwdenk for cfb_console. Supports cursor blinking. 1559c609719bSwdenk 1560713cb680SHung-ying Tyan CONFIG_CROS_EC_KEYB 1561713cb680SHung-ying Tyan Enables a Chrome OS keyboard using the CROS_EC interface. 1562713cb680SHung-ying Tyan This uses CROS_EC to communicate with a second microcontroller 1563713cb680SHung-ying Tyan which provides key scans on request. 1564713cb680SHung-ying Tyan 1565c609719bSwdenk- Video support: 1566c609719bSwdenk CONFIG_VIDEO 1567c609719bSwdenk 1568c609719bSwdenk Define this to enable video support (for output to 1569c609719bSwdenk video). 1570c609719bSwdenk 1571c609719bSwdenk CONFIG_VIDEO_CT69000 1572c609719bSwdenk 1573c609719bSwdenk Enable Chips & Technologies 69000 Video chip 1574c609719bSwdenk 1575c609719bSwdenk CONFIG_VIDEO_SMI_LYNXEM 1576eeb1b77bSwdenk Enable Silicon Motion SMI 712/710/810 Video chip. The 1577eeb1b77bSwdenk video output is selected via environment 'videoout' 1578eeb1b77bSwdenk (1 = LCD and 2 = CRT). If videoout is undefined, CRT is 1579eeb1b77bSwdenk assumed. 1580c609719bSwdenk 1581eeb1b77bSwdenk For the CT69000 and SMI_LYNXEM drivers, videomode is 158211ccc33fSMarcel Ziswiler selected via environment 'videomode'. Two different ways 1583eeb1b77bSwdenk are possible: 1584eeb1b77bSwdenk - "videomode=num" 'num' is a standard LiLo mode numbers. 1585eeb1b77bSwdenk Following standard modes are supported (* is default): 1586eeb1b77bSwdenk 1587eeb1b77bSwdenk Colors 640x480 800x600 1024x768 1152x864 1280x1024 1588eeb1b77bSwdenk -------------+--------------------------------------------- 1589eeb1b77bSwdenk 8 bits | 0x301* 0x303 0x305 0x161 0x307 1590eeb1b77bSwdenk 15 bits | 0x310 0x313 0x316 0x162 0x319 1591eeb1b77bSwdenk 16 bits | 0x311 0x314 0x317 0x163 0x31A 1592eeb1b77bSwdenk 24 bits | 0x312 0x315 0x318 ? 0x31B 1593eeb1b77bSwdenk -------------+--------------------------------------------- 1594c609719bSwdenk (i.e. setenv videomode 317; saveenv; reset;) 1595c609719bSwdenk 1596eeb1b77bSwdenk - "videomode=bootargs" all the video parameters are parsed 15977817cb20SMarcel Ziswiler from the bootargs. (See drivers/video/videomodes.c) 1598eeb1b77bSwdenk 1599eeb1b77bSwdenk 1600a6c7ad2fSwdenk CONFIG_VIDEO_SED13806 1601a6c7ad2fSwdenk Enable Epson SED13806 driver. This driver supports 8bpp 1602a6c7ad2fSwdenk and 16bpp modes defined by CONFIG_VIDEO_SED13806_8BPP 1603a6c7ad2fSwdenk or CONFIG_VIDEO_SED13806_16BPP 1604a6c7ad2fSwdenk 16057d3053fbSTimur Tabi CONFIG_FSL_DIU_FB 16067d3053fbSTimur Tabi Enable the Freescale DIU video driver. Reference boards for 16077d3053fbSTimur Tabi SOCs that have a DIU should define this macro to enable DIU 16087d3053fbSTimur Tabi support, and should also define these other macros: 16097d3053fbSTimur Tabi 16107d3053fbSTimur Tabi CONFIG_SYS_DIU_ADDR 16117d3053fbSTimur Tabi CONFIG_VIDEO 16127d3053fbSTimur Tabi CONFIG_CMD_BMP 16137d3053fbSTimur Tabi CONFIG_CFB_CONSOLE 16147d3053fbSTimur Tabi CONFIG_VIDEO_SW_CURSOR 16157d3053fbSTimur Tabi CONFIG_VGA_AS_SINGLE_DEVICE 16167d3053fbSTimur Tabi CONFIG_VIDEO_LOGO 16177d3053fbSTimur Tabi CONFIG_VIDEO_BMP_LOGO 16187d3053fbSTimur Tabi 1619ba8e76bdSTimur Tabi The DIU driver will look for the 'video-mode' environment 1620ba8e76bdSTimur Tabi variable, and if defined, enable the DIU as a console during 1621ba8e76bdSTimur Tabi boot. See the documentation file README.video for a 1622ba8e76bdSTimur Tabi description of this variable. 16237d3053fbSTimur Tabi 1624058d59b0SSimon Glass CONFIG_VIDEO_VGA 1625058d59b0SSimon Glass 1626058d59b0SSimon Glass Enable the VGA video / BIOS for x86. The alternative if you 1627058d59b0SSimon Glass are using coreboot is to use the coreboot frame buffer 1628058d59b0SSimon Glass driver. 1629058d59b0SSimon Glass 1630058d59b0SSimon Glass 1631682011ffSwdenk- Keyboard Support: 1632682011ffSwdenk CONFIG_KEYBOARD 1633682011ffSwdenk 1634682011ffSwdenk Define this to enable a custom keyboard support. 1635682011ffSwdenk This simply calls drv_keyboard_init() which must be 1636682011ffSwdenk defined in your board-specific files. 1637682011ffSwdenk The only board using this so far is RBC823. 1638a6c7ad2fSwdenk 1639c609719bSwdenk- LCD Support: CONFIG_LCD 1640c609719bSwdenk 1641c609719bSwdenk Define this to enable LCD support (for output to LCD 1642c609719bSwdenk display); also select one of the supported displays 1643c609719bSwdenk by defining one of these: 1644c609719bSwdenk 164539cf4804SStelian Pop CONFIG_ATMEL_LCD: 164639cf4804SStelian Pop 164739cf4804SStelian Pop HITACHI TX09D70VM1CCA, 3.5", 240x320. 164839cf4804SStelian Pop 1649fd3103bbSwdenk CONFIG_NEC_NL6448AC33: 1650c609719bSwdenk 1651fd3103bbSwdenk NEC NL6448AC33-18. Active, color, single scan. 1652c609719bSwdenk 1653fd3103bbSwdenk CONFIG_NEC_NL6448BC20 1654c609719bSwdenk 1655fd3103bbSwdenk NEC NL6448BC20-08. 6.5", 640x480. 1656fd3103bbSwdenk Active, color, single scan. 1657fd3103bbSwdenk 1658fd3103bbSwdenk CONFIG_NEC_NL6448BC33_54 1659fd3103bbSwdenk 1660fd3103bbSwdenk NEC NL6448BC33-54. 10.4", 640x480. 1661c609719bSwdenk Active, color, single scan. 1662c609719bSwdenk 1663c609719bSwdenk CONFIG_SHARP_16x9 1664c609719bSwdenk 1665c609719bSwdenk Sharp 320x240. Active, color, single scan. 1666c609719bSwdenk It isn't 16x9, and I am not sure what it is. 1667c609719bSwdenk 1668c609719bSwdenk CONFIG_SHARP_LQ64D341 1669c609719bSwdenk 1670c609719bSwdenk Sharp LQ64D341 display, 640x480. 1671c609719bSwdenk Active, color, single scan. 1672c609719bSwdenk 1673c609719bSwdenk CONFIG_HLD1045 1674c609719bSwdenk 1675c609719bSwdenk HLD1045 display, 640x480. 1676c609719bSwdenk Active, color, single scan. 1677c609719bSwdenk 1678c609719bSwdenk CONFIG_OPTREX_BW 1679c609719bSwdenk 1680c609719bSwdenk Optrex CBL50840-2 NF-FW 99 22 M5 1681c609719bSwdenk or 1682c609719bSwdenk Hitachi LMG6912RPFC-00T 1683c609719bSwdenk or 1684c609719bSwdenk Hitachi SP14Q002 1685c609719bSwdenk 1686c609719bSwdenk 320x240. Black & white. 1687c609719bSwdenk 1688c609719bSwdenk Normally display is black on white background; define 16896d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_WHITE_ON_BLACK to get it inverted. 1690c609719bSwdenk 1691676d319eSSimon Glass CONFIG_LCD_ALIGNMENT 1692676d319eSSimon Glass 1693676d319eSSimon Glass Normally the LCD is page-aligned (tyically 4KB). If this is 1694676d319eSSimon Glass defined then the LCD will be aligned to this value instead. 1695676d319eSSimon Glass For ARM it is sometimes useful to use MMU_SECTION_SIZE 1696676d319eSSimon Glass here, since it is cheaper to change data cache settings on 1697676d319eSSimon Glass a per-section basis. 1698676d319eSSimon Glass 16990d89efefSSimon Glass CONFIG_CONSOLE_SCROLL_LINES 17000d89efefSSimon Glass 17010d89efefSSimon Glass When the console need to be scrolled, this is the number of 17020d89efefSSimon Glass lines to scroll by. It defaults to 1. Increasing this makes 17030d89efefSSimon Glass the console jump but can help speed up operation when scrolling 17040d89efefSSimon Glass is slow. 1705676d319eSSimon Glass 170645d7f525STom Wai-Hong Tam CONFIG_LCD_BMP_RLE8 170745d7f525STom Wai-Hong Tam 170845d7f525STom Wai-Hong Tam Support drawing of RLE8-compressed bitmaps on the LCD. 170945d7f525STom Wai-Hong Tam 1710735987c5STom Wai-Hong Tam CONFIG_I2C_EDID 1711735987c5STom Wai-Hong Tam 1712735987c5STom Wai-Hong Tam Enables an 'i2c edid' command which can read EDID 1713735987c5STom Wai-Hong Tam information over I2C from an attached LCD display. 1714735987c5STom Wai-Hong Tam 17157152b1d0Swdenk- Splash Screen Support: CONFIG_SPLASH_SCREEN 1716d791b1dcSwdenk 1717d791b1dcSwdenk If this option is set, the environment is checked for 1718d791b1dcSwdenk a variable "splashimage". If found, the usual display 1719d791b1dcSwdenk of logo, copyright and system information on the LCD 1720e94d2cd9Swdenk is suppressed and the BMP image at the address 1721d791b1dcSwdenk specified in "splashimage" is loaded instead. The 1722d791b1dcSwdenk console is redirected to the "nulldev", too. This 1723d791b1dcSwdenk allows for a "silent" boot where a splash screen is 1724d791b1dcSwdenk loaded very quickly after power-on. 1725d791b1dcSwdenk 1726c0880485SNikita Kiryanov CONFIG_SPLASHIMAGE_GUARD 1727c0880485SNikita Kiryanov 1728c0880485SNikita Kiryanov If this option is set, then U-Boot will prevent the environment 1729c0880485SNikita Kiryanov variable "splashimage" from being set to a problematic address 1730c0880485SNikita Kiryanov (see README.displaying-bmps and README.arm-unaligned-accesses). 1731c0880485SNikita Kiryanov This option is useful for targets where, due to alignment 1732c0880485SNikita Kiryanov restrictions, an improperly aligned BMP image will cause a data 1733c0880485SNikita Kiryanov abort. If you think you will not have problems with unaligned 1734c0880485SNikita Kiryanov accesses (for example because your toolchain prevents them) 1735c0880485SNikita Kiryanov there is no need to set this option. 1736c0880485SNikita Kiryanov 17371ca298ceSMatthias Weisser CONFIG_SPLASH_SCREEN_ALIGN 17381ca298ceSMatthias Weisser 17391ca298ceSMatthias Weisser If this option is set the splash image can be freely positioned 17401ca298ceSMatthias Weisser on the screen. Environment variable "splashpos" specifies the 17411ca298ceSMatthias Weisser position as "x,y". If a positive number is given it is used as 17421ca298ceSMatthias Weisser number of pixel from left/top. If a negative number is given it 17431ca298ceSMatthias Weisser is used as number of pixel from right/bottom. You can also 17441ca298ceSMatthias Weisser specify 'm' for centering the image. 17451ca298ceSMatthias Weisser 17461ca298ceSMatthias Weisser Example: 17471ca298ceSMatthias Weisser setenv splashpos m,m 17481ca298ceSMatthias Weisser => image at center of screen 17491ca298ceSMatthias Weisser 17501ca298ceSMatthias Weisser setenv splashpos 30,20 17511ca298ceSMatthias Weisser => image at x = 30 and y = 20 17521ca298ceSMatthias Weisser 17531ca298ceSMatthias Weisser setenv splashpos -10,m 17541ca298ceSMatthias Weisser => vertically centered image 17551ca298ceSMatthias Weisser at x = dspWidth - bmpWidth - 9 17561ca298ceSMatthias Weisser 175798f4a3dfSStefan Roese- Gzip compressed BMP image support: CONFIG_VIDEO_BMP_GZIP 175898f4a3dfSStefan Roese 175998f4a3dfSStefan Roese If this option is set, additionally to standard BMP 176098f4a3dfSStefan Roese images, gzipped BMP images can be displayed via the 176198f4a3dfSStefan Roese splashscreen support or the bmp command. 176298f4a3dfSStefan Roese 1763d5011762SAnatolij Gustschin- Run length encoded BMP image (RLE8) support: CONFIG_VIDEO_BMP_RLE8 1764d5011762SAnatolij Gustschin 1765d5011762SAnatolij Gustschin If this option is set, 8-bit RLE compressed BMP images 1766d5011762SAnatolij Gustschin can be displayed via the splashscreen support or the 1767d5011762SAnatolij Gustschin bmp command. 1768d5011762SAnatolij Gustschin 1769f2b96dfbSLei Wen- Do compresssing for memory range: 1770f2b96dfbSLei Wen CONFIG_CMD_ZIP 1771f2b96dfbSLei Wen 1772f2b96dfbSLei Wen If this option is set, it would use zlib deflate method 1773f2b96dfbSLei Wen to compress the specified memory at its best effort. 1774f2b96dfbSLei Wen 1775c29fdfc1Swdenk- Compression support: 17768ef70478SKees Cook CONFIG_GZIP 17778ef70478SKees Cook 17788ef70478SKees Cook Enabled by default to support gzip compressed images. 17798ef70478SKees Cook 1780c29fdfc1Swdenk CONFIG_BZIP2 1781c29fdfc1Swdenk 1782c29fdfc1Swdenk If this option is set, support for bzip2 compressed 1783c29fdfc1Swdenk images is included. If not, only uncompressed and gzip 1784c29fdfc1Swdenk compressed images are supported. 1785c29fdfc1Swdenk 1786c29fdfc1Swdenk NOTE: the bzip2 algorithm requires a lot of RAM, so 17876d0f6bcfSJean-Christophe PLAGNIOL-VILLARD the malloc area (as defined by CONFIG_SYS_MALLOC_LEN) should 1788c29fdfc1Swdenk be at least 4MB. 1789d791b1dcSwdenk 1790fc9c1727SLuigi 'Comio' Mantellini CONFIG_LZMA 1791fc9c1727SLuigi 'Comio' Mantellini 1792fc9c1727SLuigi 'Comio' Mantellini If this option is set, support for lzma compressed 1793fc9c1727SLuigi 'Comio' Mantellini images is included. 1794fc9c1727SLuigi 'Comio' Mantellini 1795fc9c1727SLuigi 'Comio' Mantellini Note: The LZMA algorithm adds between 2 and 4KB of code and it 1796fc9c1727SLuigi 'Comio' Mantellini requires an amount of dynamic memory that is given by the 1797fc9c1727SLuigi 'Comio' Mantellini formula: 1798fc9c1727SLuigi 'Comio' Mantellini 1799fc9c1727SLuigi 'Comio' Mantellini (1846 + 768 << (lc + lp)) * sizeof(uint16) 1800fc9c1727SLuigi 'Comio' Mantellini 1801fc9c1727SLuigi 'Comio' Mantellini Where lc and lp stand for, respectively, Literal context bits 1802fc9c1727SLuigi 'Comio' Mantellini and Literal pos bits. 1803fc9c1727SLuigi 'Comio' Mantellini 1804fc9c1727SLuigi 'Comio' Mantellini This value is upper-bounded by 14MB in the worst case. Anyway, 1805fc9c1727SLuigi 'Comio' Mantellini for a ~4MB large kernel image, we have lc=3 and lp=0 for a 1806fc9c1727SLuigi 'Comio' Mantellini total amount of (1846 + 768 << (3 + 0)) * 2 = ~41KB... that is 1807fc9c1727SLuigi 'Comio' Mantellini a very small buffer. 1808fc9c1727SLuigi 'Comio' Mantellini 1809fc9c1727SLuigi 'Comio' Mantellini Use the lzmainfo tool to determinate the lc and lp values and 1810fc9c1727SLuigi 'Comio' Mantellini then calculate the amount of needed dynamic memory (ensuring 18116d0f6bcfSJean-Christophe PLAGNIOL-VILLARD the appropriate CONFIG_SYS_MALLOC_LEN value). 1812fc9c1727SLuigi 'Comio' Mantellini 18138ef70478SKees Cook CONFIG_LZO 18148ef70478SKees Cook 18158ef70478SKees Cook If this option is set, support for LZO compressed images 18168ef70478SKees Cook is included. 18178ef70478SKees Cook 181817ea1177Swdenk- MII/PHY support: 181917ea1177Swdenk CONFIG_PHY_ADDR 182017ea1177Swdenk 182117ea1177Swdenk The address of PHY on MII bus. 182217ea1177Swdenk 182317ea1177Swdenk CONFIG_PHY_CLOCK_FREQ (ppc4xx) 182417ea1177Swdenk 182517ea1177Swdenk The clock frequency of the MII bus 182617ea1177Swdenk 182717ea1177Swdenk CONFIG_PHY_GIGE 182817ea1177Swdenk 182917ea1177Swdenk If this option is set, support for speed/duplex 183011ccc33fSMarcel Ziswiler detection of gigabit PHY is included. 183117ea1177Swdenk 183217ea1177Swdenk CONFIG_PHY_RESET_DELAY 183317ea1177Swdenk 183417ea1177Swdenk Some PHY like Intel LXT971A need extra delay after 183517ea1177Swdenk reset before any MII register access is possible. 183617ea1177Swdenk For such PHY, set this option to the usec delay 183717ea1177Swdenk required. (minimum 300usec for LXT971A) 183817ea1177Swdenk 183917ea1177Swdenk CONFIG_PHY_CMD_DELAY (ppc4xx) 184017ea1177Swdenk 184117ea1177Swdenk Some PHY like Intel LXT971A need extra delay after 184217ea1177Swdenk command issued before MII status register can be read 184317ea1177Swdenk 1844c609719bSwdenk- Ethernet address: 1845c609719bSwdenk CONFIG_ETHADDR 1846c68a05feSrichardretanubun CONFIG_ETH1ADDR 1847c609719bSwdenk CONFIG_ETH2ADDR 1848c609719bSwdenk CONFIG_ETH3ADDR 1849c68a05feSrichardretanubun CONFIG_ETH4ADDR 1850c68a05feSrichardretanubun CONFIG_ETH5ADDR 1851c609719bSwdenk 185211ccc33fSMarcel Ziswiler Define a default value for Ethernet address to use 185311ccc33fSMarcel Ziswiler for the respective Ethernet interface, in case this 1854c609719bSwdenk is not determined automatically. 1855c609719bSwdenk 1856c609719bSwdenk- IP address: 1857c609719bSwdenk CONFIG_IPADDR 1858c609719bSwdenk 1859c609719bSwdenk Define a default value for the IP address to use for 186011ccc33fSMarcel Ziswiler the default Ethernet interface, in case this is not 1861c609719bSwdenk determined through e.g. bootp. 18621ebcd654SWolfgang Denk (Environment variable "ipaddr") 1863c609719bSwdenk 1864c609719bSwdenk- Server IP address: 1865c609719bSwdenk CONFIG_SERVERIP 1866c609719bSwdenk 1867c609719bSwdenk Defines a default value for the IP address of a TFTP 1868c609719bSwdenk server to contact when using the "tftboot" command. 18691ebcd654SWolfgang Denk (Environment variable "serverip") 1870c609719bSwdenk 187197cfe861SRobin Getz CONFIG_KEEP_SERVERADDR 187297cfe861SRobin Getz 187397cfe861SRobin Getz Keeps the server's MAC address, in the env 'serveraddr' 187497cfe861SRobin Getz for passing to bootargs (like Linux's netconsole option) 187597cfe861SRobin Getz 18761ebcd654SWolfgang Denk- Gateway IP address: 18771ebcd654SWolfgang Denk CONFIG_GATEWAYIP 18781ebcd654SWolfgang Denk 18791ebcd654SWolfgang Denk Defines a default value for the IP address of the 18801ebcd654SWolfgang Denk default router where packets to other networks are 18811ebcd654SWolfgang Denk sent to. 18821ebcd654SWolfgang Denk (Environment variable "gatewayip") 18831ebcd654SWolfgang Denk 18841ebcd654SWolfgang Denk- Subnet mask: 18851ebcd654SWolfgang Denk CONFIG_NETMASK 18861ebcd654SWolfgang Denk 18871ebcd654SWolfgang Denk Defines a default value for the subnet mask (or 18881ebcd654SWolfgang Denk routing prefix) which is used to determine if an IP 18891ebcd654SWolfgang Denk address belongs to the local subnet or needs to be 18901ebcd654SWolfgang Denk forwarded through a router. 18911ebcd654SWolfgang Denk (Environment variable "netmask") 18921ebcd654SWolfgang Denk 189353a5c424SDavid Updegraff- Multicast TFTP Mode: 189453a5c424SDavid Updegraff CONFIG_MCAST_TFTP 189553a5c424SDavid Updegraff 189653a5c424SDavid Updegraff Defines whether you want to support multicast TFTP as per 189753a5c424SDavid Updegraff rfc-2090; for example to work with atftp. Lets lots of targets 189811ccc33fSMarcel Ziswiler tftp down the same boot image concurrently. Note: the Ethernet 189953a5c424SDavid Updegraff driver in use must provide a function: mcast() to join/leave a 190053a5c424SDavid Updegraff multicast group. 190153a5c424SDavid Updegraff 1902c609719bSwdenk- BOOTP Recovery Mode: 1903c609719bSwdenk CONFIG_BOOTP_RANDOM_DELAY 1904c609719bSwdenk 1905c609719bSwdenk If you have many targets in a network that try to 1906c609719bSwdenk boot using BOOTP, you may want to avoid that all 1907c609719bSwdenk systems send out BOOTP requests at precisely the same 1908c609719bSwdenk moment (which would happen for instance at recovery 1909c609719bSwdenk from a power failure, when all systems will try to 1910c609719bSwdenk boot, thus flooding the BOOTP server. Defining 1911c609719bSwdenk CONFIG_BOOTP_RANDOM_DELAY causes a random delay to be 1912c609719bSwdenk inserted before sending out BOOTP requests. The 19136c33c785SWolfgang Denk following delays are inserted then: 1914c609719bSwdenk 1915c609719bSwdenk 1st BOOTP request: delay 0 ... 1 sec 1916c609719bSwdenk 2nd BOOTP request: delay 0 ... 2 sec 1917c609719bSwdenk 3rd BOOTP request: delay 0 ... 4 sec 1918c609719bSwdenk 4th and following 1919c609719bSwdenk BOOTP requests: delay 0 ... 8 sec 1920c609719bSwdenk 1921fe389a82Sstroese- DHCP Advanced Options: 19221fe80d79SJon Loeliger You can fine tune the DHCP functionality by defining 19231fe80d79SJon Loeliger CONFIG_BOOTP_* symbols: 1924fe389a82Sstroese 19251fe80d79SJon Loeliger CONFIG_BOOTP_SUBNETMASK 19261fe80d79SJon Loeliger CONFIG_BOOTP_GATEWAY 19271fe80d79SJon Loeliger CONFIG_BOOTP_HOSTNAME 19281fe80d79SJon Loeliger CONFIG_BOOTP_NISDOMAIN 19291fe80d79SJon Loeliger CONFIG_BOOTP_BOOTPATH 19301fe80d79SJon Loeliger CONFIG_BOOTP_BOOTFILESIZE 19311fe80d79SJon Loeliger CONFIG_BOOTP_DNS 19321fe80d79SJon Loeliger CONFIG_BOOTP_DNS2 19331fe80d79SJon Loeliger CONFIG_BOOTP_SEND_HOSTNAME 19341fe80d79SJon Loeliger CONFIG_BOOTP_NTPSERVER 19351fe80d79SJon Loeliger CONFIG_BOOTP_TIMEOFFSET 19361fe80d79SJon Loeliger CONFIG_BOOTP_VENDOREX 19372c00e099SJoe Hershberger CONFIG_BOOTP_MAY_FAIL 1938fe389a82Sstroese 19395d110f0aSWilson Callan CONFIG_BOOTP_SERVERIP - TFTP server will be the serverip 19405d110f0aSWilson Callan environment variable, not the BOOTP server. 1941fe389a82Sstroese 19422c00e099SJoe Hershberger CONFIG_BOOTP_MAY_FAIL - If the DHCP server is not found 19432c00e099SJoe Hershberger after the configured retry count, the call will fail 19442c00e099SJoe Hershberger instead of starting over. This can be used to fail over 19452c00e099SJoe Hershberger to Link-local IP address configuration if the DHCP server 19462c00e099SJoe Hershberger is not available. 19472c00e099SJoe Hershberger 1948fe389a82Sstroese CONFIG_BOOTP_DNS2 - If a DHCP client requests the DNS 1949fe389a82Sstroese serverip from a DHCP server, it is possible that more 1950fe389a82Sstroese than one DNS serverip is offered to the client. 1951fe389a82Sstroese If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS 1952fe389a82Sstroese serverip will be stored in the additional environment 1953fe389a82Sstroese variable "dnsip2". The first DNS serverip is always 1954fe389a82Sstroese stored in the variable "dnsip", when CONFIG_BOOTP_DNS 19551fe80d79SJon Loeliger is defined. 1956fe389a82Sstroese 1957fe389a82Sstroese CONFIG_BOOTP_SEND_HOSTNAME - Some DHCP servers are capable 1958fe389a82Sstroese to do a dynamic update of a DNS server. To do this, they 1959fe389a82Sstroese need the hostname of the DHCP requester. 19605d110f0aSWilson Callan If CONFIG_BOOTP_SEND_HOSTNAME is defined, the content 19611fe80d79SJon Loeliger of the "hostname" environment variable is passed as 19621fe80d79SJon Loeliger option 12 to the DHCP server. 1963fe389a82Sstroese 1964d9a2f416SAras Vaichas CONFIG_BOOTP_DHCP_REQUEST_DELAY 1965d9a2f416SAras Vaichas 1966d9a2f416SAras Vaichas A 32bit value in microseconds for a delay between 1967d9a2f416SAras Vaichas receiving a "DHCP Offer" and sending the "DHCP Request". 1968d9a2f416SAras Vaichas This fixes a problem with certain DHCP servers that don't 1969d9a2f416SAras Vaichas respond 100% of the time to a "DHCP request". E.g. On an 1970d9a2f416SAras Vaichas AT91RM9200 processor running at 180MHz, this delay needed 1971d9a2f416SAras Vaichas to be *at least* 15,000 usec before a Windows Server 2003 1972d9a2f416SAras Vaichas DHCP server would reply 100% of the time. I recommend at 1973d9a2f416SAras Vaichas least 50,000 usec to be safe. The alternative is to hope 1974d9a2f416SAras Vaichas that one of the retries will be successful but note that 1975d9a2f416SAras Vaichas the DHCP timeout and retry process takes a longer than 1976d9a2f416SAras Vaichas this delay. 1977d9a2f416SAras Vaichas 1978d22c338eSJoe Hershberger - Link-local IP address negotiation: 1979d22c338eSJoe Hershberger Negotiate with other link-local clients on the local network 1980d22c338eSJoe Hershberger for an address that doesn't require explicit configuration. 1981d22c338eSJoe Hershberger This is especially useful if a DHCP server cannot be guaranteed 1982d22c338eSJoe Hershberger to exist in all environments that the device must operate. 1983d22c338eSJoe Hershberger 1984d22c338eSJoe Hershberger See doc/README.link-local for more information. 1985d22c338eSJoe Hershberger 1986a3d991bdSwdenk - CDP Options: 1987a3d991bdSwdenk CONFIG_CDP_DEVICE_ID 1988a3d991bdSwdenk 1989a3d991bdSwdenk The device id used in CDP trigger frames. 1990a3d991bdSwdenk 1991a3d991bdSwdenk CONFIG_CDP_DEVICE_ID_PREFIX 1992a3d991bdSwdenk 1993a3d991bdSwdenk A two character string which is prefixed to the MAC address 1994a3d991bdSwdenk of the device. 1995a3d991bdSwdenk 1996a3d991bdSwdenk CONFIG_CDP_PORT_ID 1997a3d991bdSwdenk 1998a3d991bdSwdenk A printf format string which contains the ascii name of 1999a3d991bdSwdenk the port. Normally is set to "eth%d" which sets 200011ccc33fSMarcel Ziswiler eth0 for the first Ethernet, eth1 for the second etc. 2001a3d991bdSwdenk 2002a3d991bdSwdenk CONFIG_CDP_CAPABILITIES 2003a3d991bdSwdenk 2004a3d991bdSwdenk A 32bit integer which indicates the device capabilities; 2005a3d991bdSwdenk 0x00000010 for a normal host which does not forwards. 2006a3d991bdSwdenk 2007a3d991bdSwdenk CONFIG_CDP_VERSION 2008a3d991bdSwdenk 2009a3d991bdSwdenk An ascii string containing the version of the software. 2010a3d991bdSwdenk 2011a3d991bdSwdenk CONFIG_CDP_PLATFORM 2012a3d991bdSwdenk 2013a3d991bdSwdenk An ascii string containing the name of the platform. 2014a3d991bdSwdenk 2015a3d991bdSwdenk CONFIG_CDP_TRIGGER 2016a3d991bdSwdenk 2017a3d991bdSwdenk A 32bit integer sent on the trigger. 2018a3d991bdSwdenk 2019a3d991bdSwdenk CONFIG_CDP_POWER_CONSUMPTION 2020a3d991bdSwdenk 2021a3d991bdSwdenk A 16bit integer containing the power consumption of the 2022a3d991bdSwdenk device in .1 of milliwatts. 2023a3d991bdSwdenk 2024a3d991bdSwdenk CONFIG_CDP_APPLIANCE_VLAN_TYPE 2025a3d991bdSwdenk 2026a3d991bdSwdenk A byte containing the id of the VLAN. 2027a3d991bdSwdenk 2028c609719bSwdenk- Status LED: CONFIG_STATUS_LED 2029c609719bSwdenk 2030c609719bSwdenk Several configurations allow to display the current 2031c609719bSwdenk status using a LED. For instance, the LED will blink 2032c609719bSwdenk fast while running U-Boot code, stop blinking as 2033c609719bSwdenk soon as a reply to a BOOTP request was received, and 2034c609719bSwdenk start blinking slow once the Linux kernel is running 2035c609719bSwdenk (supported by a status LED driver in the Linux 2036c609719bSwdenk kernel). Defining CONFIG_STATUS_LED enables this 2037c609719bSwdenk feature in U-Boot. 2038c609719bSwdenk 20391df7bbbaSIgor Grinberg Additional options: 20401df7bbbaSIgor Grinberg 20411df7bbbaSIgor Grinberg CONFIG_GPIO_LED 20421df7bbbaSIgor Grinberg The status LED can be connected to a GPIO pin. 20431df7bbbaSIgor Grinberg In such cases, the gpio_led driver can be used as a 20441df7bbbaSIgor Grinberg status LED backend implementation. Define CONFIG_GPIO_LED 20451df7bbbaSIgor Grinberg to include the gpio_led driver in the U-Boot binary. 20461df7bbbaSIgor Grinberg 20479dfdcdfeSIgor Grinberg CONFIG_GPIO_LED_INVERTED_TABLE 20489dfdcdfeSIgor Grinberg Some GPIO connected LEDs may have inverted polarity in which 20499dfdcdfeSIgor Grinberg case the GPIO high value corresponds to LED off state and 20509dfdcdfeSIgor Grinberg GPIO low value corresponds to LED on state. 20519dfdcdfeSIgor Grinberg In such cases CONFIG_GPIO_LED_INVERTED_TABLE may be defined 20529dfdcdfeSIgor Grinberg with a list of GPIO LEDs that have inverted polarity. 20539dfdcdfeSIgor Grinberg 2054c609719bSwdenk- CAN Support: CONFIG_CAN_DRIVER 2055c609719bSwdenk 2056c609719bSwdenk Defining CONFIG_CAN_DRIVER enables CAN driver support 2057c609719bSwdenk on those systems that support this (optional) 2058c609719bSwdenk feature, like the TQM8xxL modules. 2059c609719bSwdenk 20603f4978c7SHeiko Schocher- I2C Support: CONFIG_SYS_I2C 2061c609719bSwdenk 20623f4978c7SHeiko Schocher This enable the NEW i2c subsystem, and will allow you to use 20633f4978c7SHeiko Schocher i2c commands at the u-boot command line (as long as you set 20643f4978c7SHeiko Schocher CONFIG_CMD_I2C in CONFIG_COMMANDS) and communicate with i2c 20653f4978c7SHeiko Schocher based realtime clock chips or other i2c devices. See 20663f4978c7SHeiko Schocher common/cmd_i2c.c for a description of the command line 20673f4978c7SHeiko Schocher interface. 20683f4978c7SHeiko Schocher 20693f4978c7SHeiko Schocher ported i2c driver to the new framework: 2070ea818dbbSHeiko Schocher - drivers/i2c/soft_i2c.c: 2071ea818dbbSHeiko Schocher - activate first bus with CONFIG_SYS_I2C_SOFT define 2072ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED and CONFIG_SYS_I2C_SOFT_SLAVE 2073ea818dbbSHeiko Schocher for defining speed and slave address 2074ea818dbbSHeiko Schocher - activate second bus with I2C_SOFT_DECLARATIONS2 define 2075ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_2 and CONFIG_SYS_I2C_SOFT_SLAVE_2 2076ea818dbbSHeiko Schocher for defining speed and slave address 2077ea818dbbSHeiko Schocher - activate third bus with I2C_SOFT_DECLARATIONS3 define 2078ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_3 and CONFIG_SYS_I2C_SOFT_SLAVE_3 2079ea818dbbSHeiko Schocher for defining speed and slave address 2080ea818dbbSHeiko Schocher - activate fourth bus with I2C_SOFT_DECLARATIONS4 define 2081ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_4 and CONFIG_SYS_I2C_SOFT_SLAVE_4 2082ea818dbbSHeiko Schocher for defining speed and slave address 20833f4978c7SHeiko Schocher 208400f792e0SHeiko Schocher - drivers/i2c/fsl_i2c.c: 208500f792e0SHeiko Schocher - activate i2c driver with CONFIG_SYS_I2C_FSL 208600f792e0SHeiko Schocher define CONFIG_SYS_FSL_I2C_OFFSET for setting the register 208700f792e0SHeiko Schocher offset CONFIG_SYS_FSL_I2C_SPEED for the i2c speed and 208800f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C_SLAVE for the slave addr of the first 208900f792e0SHeiko Schocher bus. 209000f792e0SHeiko Schocher - If your board supports a second fsl i2c bus, define 209100f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_OFFSET for the register offset 209200f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_SPEED for the speed and 209300f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_SLAVE for the slave address of the 209400f792e0SHeiko Schocher second bus. 209500f792e0SHeiko Schocher 20961f2ba722SSimon Glass - drivers/i2c/tegra_i2c.c: 20971f2ba722SSimon Glass - activate this driver with CONFIG_SYS_I2C_TEGRA 20981f2ba722SSimon Glass - This driver adds 4 i2c buses with a fix speed from 20991f2ba722SSimon Glass 100000 and the slave addr 0! 21001f2ba722SSimon Glass 2101880540deSDirk Eibach - drivers/i2c/ppc4xx_i2c.c 2102880540deSDirk Eibach - activate this driver with CONFIG_SYS_I2C_PPC4XX 2103880540deSDirk Eibach - CONFIG_SYS_I2C_PPC4XX_CH0 activate hardware channel 0 2104880540deSDirk Eibach - CONFIG_SYS_I2C_PPC4XX_CH1 activate hardware channel 1 2105880540deSDirk Eibach 2106fac96408Strem - drivers/i2c/i2c_mxc.c 2107fac96408Strem - activate this driver with CONFIG_SYS_I2C_MXC 2108fac96408Strem - define speed for bus 1 with CONFIG_SYS_MXC_I2C1_SPEED 2109fac96408Strem - define slave for bus 1 with CONFIG_SYS_MXC_I2C1_SLAVE 2110fac96408Strem - define speed for bus 2 with CONFIG_SYS_MXC_I2C2_SPEED 2111fac96408Strem - define slave for bus 2 with CONFIG_SYS_MXC_I2C2_SLAVE 2112fac96408Strem - define speed for bus 3 with CONFIG_SYS_MXC_I2C3_SPEED 2113fac96408Strem - define slave for bus 3 with CONFIG_SYS_MXC_I2C3_SLAVE 2114fac96408Strem If thoses defines are not set, default value is 100000 2115fac96408Strem for speed, and 0 for slave. 2116fac96408Strem 21171086bfa9SNobuhiro Iwamatsu - drivers/i2c/rcar_i2c.c: 21181086bfa9SNobuhiro Iwamatsu - activate this driver with CONFIG_SYS_I2C_RCAR 21191086bfa9SNobuhiro Iwamatsu - This driver adds 4 i2c buses 21201086bfa9SNobuhiro Iwamatsu 21211086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C0_BASE for setting the register channel 0 21221086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C0_SPEED for for the speed channel 0 21231086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C1_BASE for setting the register channel 1 21241086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C1_SPEED for for the speed channel 1 21251086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C2_BASE for setting the register channel 2 21261086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C2_SPEED for for the speed channel 2 21271086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C3_BASE for setting the register channel 3 21281086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C3_SPEED for for the speed channel 3 21291086bfa9SNobuhiro Iwamatsu - CONFIF_SYS_RCAR_I2C_NUM_CONTROLLERS for number of i2c buses 21301086bfa9SNobuhiro Iwamatsu 21312035d77dSNobuhiro Iwamatsu - drivers/i2c/sh_i2c.c: 21322035d77dSNobuhiro Iwamatsu - activate this driver with CONFIG_SYS_I2C_SH 21332035d77dSNobuhiro Iwamatsu - This driver adds from 2 to 5 i2c buses 21342035d77dSNobuhiro Iwamatsu 21352035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE0 for setting the register channel 0 21362035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED0 for for the speed channel 0 21372035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE1 for setting the register channel 1 21382035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED1 for for the speed channel 1 21392035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE2 for setting the register channel 2 21402035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED2 for for the speed channel 2 21412035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE3 for setting the register channel 3 21422035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED3 for for the speed channel 3 21432035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE4 for setting the register channel 4 21442035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED4 for for the speed channel 4 21452035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE5 for setting the register channel 5 21462035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED5 for for the speed channel 5 21472035d77dSNobuhiro Iwamatsu - CONFIF_SYS_I2C_SH_NUM_CONTROLLERS for nummber of i2c buses 21482035d77dSNobuhiro Iwamatsu 21496789e84eSHeiko Schocher - drivers/i2c/omap24xx_i2c.c 21506789e84eSHeiko Schocher - activate this driver with CONFIG_SYS_I2C_OMAP24XX 21516789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED speed channel 0 21526789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE slave addr channel 0 21536789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED1 speed channel 1 21546789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE1 slave addr channel 1 21556789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED2 speed channel 2 21566789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE2 slave addr channel 2 21576789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED3 speed channel 3 21586789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE3 slave addr channel 3 21596789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED4 speed channel 4 21606789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE4 slave addr channel 4 21616789e84eSHeiko Schocher 21620bdffe71SHeiko Schocher - drivers/i2c/zynq_i2c.c 21630bdffe71SHeiko Schocher - activate this driver with CONFIG_SYS_I2C_ZYNQ 21640bdffe71SHeiko Schocher - set CONFIG_SYS_I2C_ZYNQ_SPEED for speed setting 21650bdffe71SHeiko Schocher - set CONFIG_SYS_I2C_ZYNQ_SLAVE for slave addr 21660bdffe71SHeiko Schocher 2167e717fc6dSNaveen Krishna Ch - drivers/i2c/s3c24x0_i2c.c: 2168e717fc6dSNaveen Krishna Ch - activate this driver with CONFIG_SYS_I2C_S3C24X0 2169e717fc6dSNaveen Krishna Ch - This driver adds i2c buses (11 for Exynos5250, Exynos5420 2170e717fc6dSNaveen Krishna Ch 9 i2c buses for Exynos4 and 1 for S3C24X0 SoCs from Samsung) 2171e717fc6dSNaveen Krishna Ch with a fix speed from 100000 and the slave addr 0! 2172e717fc6dSNaveen Krishna Ch 21733f4978c7SHeiko Schocher additional defines: 21743f4978c7SHeiko Schocher 21753f4978c7SHeiko Schocher CONFIG_SYS_NUM_I2C_BUSES 21763f4978c7SHeiko Schocher Hold the number of i2c busses you want to use. If you 21773f4978c7SHeiko Schocher don't use/have i2c muxes on your i2c bus, this 21783f4978c7SHeiko Schocher is equal to CONFIG_SYS_NUM_I2C_ADAPTERS, and you can 21793f4978c7SHeiko Schocher omit this define. 21803f4978c7SHeiko Schocher 21813f4978c7SHeiko Schocher CONFIG_SYS_I2C_DIRECT_BUS 21823f4978c7SHeiko Schocher define this, if you don't use i2c muxes on your hardware. 21833f4978c7SHeiko Schocher if CONFIG_SYS_I2C_MAX_HOPS is not defined or == 0 you can 21843f4978c7SHeiko Schocher omit this define. 21853f4978c7SHeiko Schocher 21863f4978c7SHeiko Schocher CONFIG_SYS_I2C_MAX_HOPS 21873f4978c7SHeiko Schocher define how many muxes are maximal consecutively connected 21883f4978c7SHeiko Schocher on one i2c bus. If you not use i2c muxes, omit this 21893f4978c7SHeiko Schocher define. 21903f4978c7SHeiko Schocher 21913f4978c7SHeiko Schocher CONFIG_SYS_I2C_BUSES 21923f4978c7SHeiko Schocher hold a list of busses you want to use, only used if 21933f4978c7SHeiko Schocher CONFIG_SYS_I2C_DIRECT_BUS is not defined, for example 21943f4978c7SHeiko Schocher a board with CONFIG_SYS_I2C_MAX_HOPS = 1 and 21953f4978c7SHeiko Schocher CONFIG_SYS_NUM_I2C_BUSES = 9: 21963f4978c7SHeiko Schocher 21973f4978c7SHeiko Schocher CONFIG_SYS_I2C_BUSES {{0, {I2C_NULL_HOP}}, \ 21983f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 1}}}, \ 21993f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 2}}}, \ 22003f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 3}}}, \ 22013f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 4}}}, \ 22023f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 5}}}, \ 22033f4978c7SHeiko Schocher {1, {I2C_NULL_HOP}}, \ 22043f4978c7SHeiko Schocher {1, {{I2C_MUX_PCA9544, 0x72, 1}}}, \ 22053f4978c7SHeiko Schocher {1, {{I2C_MUX_PCA9544, 0x72, 2}}}, \ 22063f4978c7SHeiko Schocher } 22073f4978c7SHeiko Schocher 22083f4978c7SHeiko Schocher which defines 22093f4978c7SHeiko Schocher bus 0 on adapter 0 without a mux 2210ea818dbbSHeiko Schocher bus 1 on adapter 0 with a PCA9547 on address 0x70 port 1 2211ea818dbbSHeiko Schocher bus 2 on adapter 0 with a PCA9547 on address 0x70 port 2 2212ea818dbbSHeiko Schocher bus 3 on adapter 0 with a PCA9547 on address 0x70 port 3 2213ea818dbbSHeiko Schocher bus 4 on adapter 0 with a PCA9547 on address 0x70 port 4 2214ea818dbbSHeiko Schocher bus 5 on adapter 0 with a PCA9547 on address 0x70 port 5 22153f4978c7SHeiko Schocher bus 6 on adapter 1 without a mux 2216ea818dbbSHeiko Schocher bus 7 on adapter 1 with a PCA9544 on address 0x72 port 1 2217ea818dbbSHeiko Schocher bus 8 on adapter 1 with a PCA9544 on address 0x72 port 2 22183f4978c7SHeiko Schocher 22193f4978c7SHeiko Schocher If you do not have i2c muxes on your board, omit this define. 22203f4978c7SHeiko Schocher 2221ea818dbbSHeiko Schocher- Legacy I2C Support: CONFIG_HARD_I2C 22223f4978c7SHeiko Schocher 22233f4978c7SHeiko Schocher NOTE: It is intended to move drivers to CONFIG_SYS_I2C which 22243f4978c7SHeiko Schocher provides the following compelling advantages: 22253f4978c7SHeiko Schocher 22263f4978c7SHeiko Schocher - more than one i2c adapter is usable 22273f4978c7SHeiko Schocher - approved multibus support 22283f4978c7SHeiko Schocher - better i2c mux support 22293f4978c7SHeiko Schocher 22303f4978c7SHeiko Schocher ** Please consider updating your I2C driver now. ** 22313f4978c7SHeiko Schocher 2232ea818dbbSHeiko Schocher These enable legacy I2C serial bus commands. Defining 2233ea818dbbSHeiko Schocher CONFIG_HARD_I2C will include the appropriate I2C driver 2234ea818dbbSHeiko Schocher for the selected CPU. 2235c609719bSwdenk 2236b37c7e5eSwdenk This will allow you to use i2c commands at the u-boot 2237602ad3b3SJon Loeliger command line (as long as you set CONFIG_CMD_I2C in 2238b37c7e5eSwdenk CONFIG_COMMANDS) and communicate with i2c based realtime 2239b37c7e5eSwdenk clock chips. See common/cmd_i2c.c for a description of the 2240c609719bSwdenk command line interface. 2241c609719bSwdenk 2242bb99ad6dSBen Warren CONFIG_HARD_I2C selects a hardware I2C controller. 2243c609719bSwdenk 2244b37c7e5eSwdenk There are several other quantities that must also be 2245ea818dbbSHeiko Schocher defined when you define CONFIG_HARD_I2C. 2246c609719bSwdenk 22476d0f6bcfSJean-Christophe PLAGNIOL-VILLARD In both cases you will need to define CONFIG_SYS_I2C_SPEED 2248b37c7e5eSwdenk to be the frequency (in Hz) at which you wish your i2c bus 22496d0f6bcfSJean-Christophe PLAGNIOL-VILLARD to run and CONFIG_SYS_I2C_SLAVE to be the address of this node (ie 225011ccc33fSMarcel Ziswiler the CPU's i2c node address). 2251c609719bSwdenk 22528d321b81SPeter Tyser Now, the u-boot i2c code for the mpc8xx 2253a47a12beSStefan Roese (arch/powerpc/cpu/mpc8xx/i2c.c) sets the CPU up as a master node 22548d321b81SPeter Tyser and so its address should therefore be cleared to 0 (See, 22558d321b81SPeter Tyser eg, MPC823e User's Manual p.16-473). So, set 22568d321b81SPeter Tyser CONFIG_SYS_I2C_SLAVE to 0. 2257b37c7e5eSwdenk 22585da71efaSEric Millbrandt CONFIG_SYS_I2C_INIT_MPC5XXX 22595da71efaSEric Millbrandt 22605da71efaSEric Millbrandt When a board is reset during an i2c bus transfer 22615da71efaSEric Millbrandt chips might think that the current transfer is still 22625da71efaSEric Millbrandt in progress. Reset the slave devices by sending start 22635da71efaSEric Millbrandt commands until the slave device responds. 22645da71efaSEric Millbrandt 2265b37c7e5eSwdenk That's all that's required for CONFIG_HARD_I2C. 2266b37c7e5eSwdenk 2267ea818dbbSHeiko Schocher If you use the software i2c interface (CONFIG_SYS_I2C_SOFT) 2268b37c7e5eSwdenk then the following macros need to be defined (examples are 2269b37c7e5eSwdenk from include/configs/lwmon.h): 2270c609719bSwdenk 2271c609719bSwdenk I2C_INIT 2272c609719bSwdenk 2273b37c7e5eSwdenk (Optional). Any commands necessary to enable the I2C 2274c609719bSwdenk controller or configure ports. 2275c609719bSwdenk 2276b37c7e5eSwdenk eg: #define I2C_INIT (immr->im_cpm.cp_pbdir |= PB_SCL) 2277b37c7e5eSwdenk 2278c609719bSwdenk I2C_PORT 2279c609719bSwdenk 2280c609719bSwdenk (Only for MPC8260 CPU). The I/O port to use (the code 2281c609719bSwdenk assumes both bits are on the same port). Valid values 2282c609719bSwdenk are 0..3 for ports A..D. 2283c609719bSwdenk 2284c609719bSwdenk I2C_ACTIVE 2285c609719bSwdenk 2286c609719bSwdenk The code necessary to make the I2C data line active 2287c609719bSwdenk (driven). If the data line is open collector, this 2288c609719bSwdenk define can be null. 2289c609719bSwdenk 2290b37c7e5eSwdenk eg: #define I2C_ACTIVE (immr->im_cpm.cp_pbdir |= PB_SDA) 2291b37c7e5eSwdenk 2292c609719bSwdenk I2C_TRISTATE 2293c609719bSwdenk 2294c609719bSwdenk The code necessary to make the I2C data line tri-stated 2295c609719bSwdenk (inactive). If the data line is open collector, this 2296c609719bSwdenk define can be null. 2297c609719bSwdenk 2298b37c7e5eSwdenk eg: #define I2C_TRISTATE (immr->im_cpm.cp_pbdir &= ~PB_SDA) 2299b37c7e5eSwdenk 2300c609719bSwdenk I2C_READ 2301c609719bSwdenk 2302472d5460SYork Sun Code that returns true if the I2C data line is high, 2303472d5460SYork Sun false if it is low. 2304c609719bSwdenk 2305b37c7e5eSwdenk eg: #define I2C_READ ((immr->im_cpm.cp_pbdat & PB_SDA) != 0) 2306b37c7e5eSwdenk 2307c609719bSwdenk I2C_SDA(bit) 2308c609719bSwdenk 2309472d5460SYork Sun If <bit> is true, sets the I2C data line high. If it 2310472d5460SYork Sun is false, it clears it (low). 2311c609719bSwdenk 2312b37c7e5eSwdenk eg: #define I2C_SDA(bit) \ 2313b37c7e5eSwdenk if(bit) immr->im_cpm.cp_pbdat |= PB_SDA; \ 2314b37c7e5eSwdenk else immr->im_cpm.cp_pbdat &= ~PB_SDA 2315b37c7e5eSwdenk 2316c609719bSwdenk I2C_SCL(bit) 2317c609719bSwdenk 2318472d5460SYork Sun If <bit> is true, sets the I2C clock line high. If it 2319472d5460SYork Sun is false, it clears it (low). 2320c609719bSwdenk 2321b37c7e5eSwdenk eg: #define I2C_SCL(bit) \ 2322b37c7e5eSwdenk if(bit) immr->im_cpm.cp_pbdat |= PB_SCL; \ 2323b37c7e5eSwdenk else immr->im_cpm.cp_pbdat &= ~PB_SCL 2324b37c7e5eSwdenk 2325c609719bSwdenk I2C_DELAY 2326c609719bSwdenk 2327c609719bSwdenk This delay is invoked four times per clock cycle so this 2328c609719bSwdenk controls the rate of data transfer. The data rate thus 2329b37c7e5eSwdenk is 1 / (I2C_DELAY * 4). Often defined to be something 2330b37c7e5eSwdenk like: 2331b37c7e5eSwdenk 2332b37c7e5eSwdenk #define I2C_DELAY udelay(2) 2333c609719bSwdenk 2334793b5726SMike Frysinger CONFIG_SOFT_I2C_GPIO_SCL / CONFIG_SOFT_I2C_GPIO_SDA 2335793b5726SMike Frysinger 2336793b5726SMike Frysinger If your arch supports the generic GPIO framework (asm/gpio.h), 2337793b5726SMike Frysinger then you may alternatively define the two GPIOs that are to be 2338793b5726SMike Frysinger used as SCL / SDA. Any of the previous I2C_xxx macros will 2339793b5726SMike Frysinger have GPIO-based defaults assigned to them as appropriate. 2340793b5726SMike Frysinger 2341793b5726SMike Frysinger You should define these to the GPIO value as given directly to 2342793b5726SMike Frysinger the generic GPIO functions. 2343793b5726SMike Frysinger 23446d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_INIT_BOARD 234547cd00faSwdenk 234647cd00faSwdenk When a board is reset during an i2c bus transfer 234747cd00faSwdenk chips might think that the current transfer is still 234847cd00faSwdenk in progress. On some boards it is possible to access 234947cd00faSwdenk the i2c SCLK line directly, either by using the 235047cd00faSwdenk processor pin as a GPIO or by having a second pin 235147cd00faSwdenk connected to the bus. If this option is defined a 235247cd00faSwdenk custom i2c_init_board() routine in boards/xxx/board.c 235347cd00faSwdenk is run early in the boot sequence. 235447cd00faSwdenk 235526a33504SRichard Retanubun CONFIG_SYS_I2C_BOARD_LATE_INIT 235626a33504SRichard Retanubun 235726a33504SRichard Retanubun An alternative to CONFIG_SYS_I2C_INIT_BOARD. If this option is 235826a33504SRichard Retanubun defined a custom i2c_board_late_init() routine in 235926a33504SRichard Retanubun boards/xxx/board.c is run AFTER the operations in i2c_init() 236026a33504SRichard Retanubun is completed. This callpoint can be used to unreset i2c bus 236126a33504SRichard Retanubun using CPU i2c controller register accesses for CPUs whose i2c 236226a33504SRichard Retanubun controller provide such a method. It is called at the end of 236326a33504SRichard Retanubun i2c_init() to allow i2c_init operations to setup the i2c bus 236426a33504SRichard Retanubun controller on the CPU (e.g. setting bus speed & slave address). 236526a33504SRichard Retanubun 236617ea1177Swdenk CONFIG_I2CFAST (PPC405GP|PPC405EP only) 236717ea1177Swdenk 236817ea1177Swdenk This option enables configuration of bi_iic_fast[] flags 236917ea1177Swdenk in u-boot bd_info structure based on u-boot environment 237017ea1177Swdenk variable "i2cfast". (see also i2cfast) 237117ea1177Swdenk 2372bb99ad6dSBen Warren CONFIG_I2C_MULTI_BUS 2373bb99ad6dSBen Warren 2374bb99ad6dSBen Warren This option allows the use of multiple I2C buses, each of which 2375bb99ad6dSBen Warren must have a controller. At any point in time, only one bus is 2376bb99ad6dSBen Warren active. To switch to a different bus, use the 'i2c dev' command. 2377bb99ad6dSBen Warren Note that bus numbering is zero-based. 2378bb99ad6dSBen Warren 23796d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_NOPROBES 2380bb99ad6dSBen Warren 2381bb99ad6dSBen Warren This option specifies a list of I2C devices that will be skipped 23820f89c54bSPeter Tyser when the 'i2c probe' command is issued. If CONFIG_I2C_MULTI_BUS 23830f89c54bSPeter Tyser is set, specify a list of bus-device pairs. Otherwise, specify 23840f89c54bSPeter Tyser a 1D array of device addresses 2385bb99ad6dSBen Warren 2386bb99ad6dSBen Warren e.g. 2387bb99ad6dSBen Warren #undef CONFIG_I2C_MULTI_BUS 23886d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_I2C_NOPROBES {0x50,0x68} 2389bb99ad6dSBen Warren 2390bb99ad6dSBen Warren will skip addresses 0x50 and 0x68 on a board with one I2C bus 2391bb99ad6dSBen Warren 2392bb99ad6dSBen Warren #define CONFIG_I2C_MULTI_BUS 23936d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_I2C_MULTI_NOPROBES {{0,0x50},{0,0x68},{1,0x54}} 2394bb99ad6dSBen Warren 2395bb99ad6dSBen Warren will skip addresses 0x50 and 0x68 on bus 0 and address 0x54 on bus 1 2396bb99ad6dSBen Warren 23976d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SPD_BUS_NUM 2398be5e6181STimur Tabi 2399be5e6181STimur Tabi If defined, then this indicates the I2C bus number for DDR SPD. 2400be5e6181STimur Tabi If not defined, then U-Boot assumes that SPD is on I2C bus 0. 2401be5e6181STimur Tabi 24026d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_RTC_BUS_NUM 24030dc018ecSStefan Roese 24040dc018ecSStefan Roese If defined, then this indicates the I2C bus number for the RTC. 24050dc018ecSStefan Roese If not defined, then U-Boot assumes that RTC is on I2C bus 0. 24060dc018ecSStefan Roese 24076d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_DTT_BUS_NUM 24080dc018ecSStefan Roese 24090dc018ecSStefan Roese If defined, then this indicates the I2C bus number for the DTT. 24100dc018ecSStefan Roese If not defined, then U-Boot assumes that DTT is on I2C bus 0. 24110dc018ecSStefan Roese 24126d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_DTT_ADDR: 24139ebbb54fSVictor Gallardo 24149ebbb54fSVictor Gallardo If defined, specifies the I2C address of the DTT device. 24159ebbb54fSVictor Gallardo If not defined, then U-Boot uses predefined value for 24169ebbb54fSVictor Gallardo specified DTT device. 24179ebbb54fSVictor Gallardo 24182ac6985aSAndrew Dyer CONFIG_SOFT_I2C_READ_REPEATED_START 24192ac6985aSAndrew Dyer 24202ac6985aSAndrew Dyer defining this will force the i2c_read() function in 24212ac6985aSAndrew Dyer the soft_i2c driver to perform an I2C repeated start 24222ac6985aSAndrew Dyer between writing the address pointer and reading the 24232ac6985aSAndrew Dyer data. If this define is omitted the default behaviour 24242ac6985aSAndrew Dyer of doing a stop-start sequence will be used. Most I2C 24252ac6985aSAndrew Dyer devices can use either method, but some require one or 24262ac6985aSAndrew Dyer the other. 2427be5e6181STimur Tabi 2428c609719bSwdenk- SPI Support: CONFIG_SPI 2429c609719bSwdenk 2430c609719bSwdenk Enables SPI driver (so far only tested with 2431c609719bSwdenk SPI EEPROM, also an instance works with Crystal A/D and 2432c609719bSwdenk D/As on the SACSng board) 2433c609719bSwdenk 24346639562eSYoshihiro Shimoda CONFIG_SH_SPI 24356639562eSYoshihiro Shimoda 24366639562eSYoshihiro Shimoda Enables the driver for SPI controller on SuperH. Currently 24376639562eSYoshihiro Shimoda only SH7757 is supported. 24386639562eSYoshihiro Shimoda 2439c609719bSwdenk CONFIG_SPI_X 2440c609719bSwdenk 2441c609719bSwdenk Enables extended (16-bit) SPI EEPROM addressing. 2442c609719bSwdenk (symmetrical to CONFIG_I2C_X) 2443c609719bSwdenk 2444c609719bSwdenk CONFIG_SOFT_SPI 2445c609719bSwdenk 2446c609719bSwdenk Enables a software (bit-bang) SPI driver rather than 2447c609719bSwdenk using hardware support. This is a general purpose 2448c609719bSwdenk driver that only requires three general I/O port pins 2449c609719bSwdenk (two outputs, one input) to function. If this is 2450c609719bSwdenk defined, the board configuration must define several 2451c609719bSwdenk SPI configuration items (port pins to use, etc). For 2452c609719bSwdenk an example, see include/configs/sacsng.h. 2453c609719bSwdenk 245404a9e118SBen Warren CONFIG_HARD_SPI 245504a9e118SBen Warren 245604a9e118SBen Warren Enables a hardware SPI driver for general-purpose reads 245704a9e118SBen Warren and writes. As with CONFIG_SOFT_SPI, the board configuration 245804a9e118SBen Warren must define a list of chip-select function pointers. 245904a9e118SBen Warren Currently supported on some MPC8xxx processors. For an 246004a9e118SBen Warren example, see include/configs/mpc8349emds.h. 246104a9e118SBen Warren 246238254f45SGuennadi Liakhovetski CONFIG_MXC_SPI 246338254f45SGuennadi Liakhovetski 246438254f45SGuennadi Liakhovetski Enables the driver for the SPI controllers on i.MX and MXC 24652e3cd1cdSFabio Estevam SoCs. Currently i.MX31/35/51 are supported. 246638254f45SGuennadi Liakhovetski 24670133502eSMatthias Fuchs- FPGA Support: CONFIG_FPGA 24680133502eSMatthias Fuchs 24690133502eSMatthias Fuchs Enables FPGA subsystem. 24700133502eSMatthias Fuchs 24710133502eSMatthias Fuchs CONFIG_FPGA_<vendor> 24720133502eSMatthias Fuchs 24730133502eSMatthias Fuchs Enables support for specific chip vendors. 24740133502eSMatthias Fuchs (ALTERA, XILINX) 24750133502eSMatthias Fuchs 24760133502eSMatthias Fuchs CONFIG_FPGA_<family> 24770133502eSMatthias Fuchs 24780133502eSMatthias Fuchs Enables support for FPGA family. 24790133502eSMatthias Fuchs (SPARTAN2, SPARTAN3, VIRTEX2, CYCLONE2, ACEX1K, ACEX) 24800133502eSMatthias Fuchs 24810133502eSMatthias Fuchs CONFIG_FPGA_COUNT 2482c609719bSwdenk 2483c609719bSwdenk Specify the number of FPGA devices to support. 2484c609719bSwdenk 24856d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_PROG_FEEDBACK 2486c609719bSwdenk 2487c609719bSwdenk Enable printing of hash marks during FPGA configuration. 2488c609719bSwdenk 24896d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_BUSY 2490c609719bSwdenk 2491c609719bSwdenk Enable checks on FPGA configuration interface busy 2492c609719bSwdenk status by the configuration function. This option 2493c609719bSwdenk will require a board or device specific function to 2494c609719bSwdenk be written. 2495c609719bSwdenk 2496c609719bSwdenk CONFIG_FPGA_DELAY 2497c609719bSwdenk 2498c609719bSwdenk If defined, a function that provides delays in the FPGA 2499c609719bSwdenk configuration driver. 2500c609719bSwdenk 25016d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_CTRLC 2502c609719bSwdenk Allow Control-C to interrupt FPGA configuration 2503c609719bSwdenk 25046d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_ERROR 2505c609719bSwdenk 2506c609719bSwdenk Check for configuration errors during FPGA bitfile 2507c609719bSwdenk loading. For example, abort during Virtex II 2508c609719bSwdenk configuration if the INIT_B line goes low (which 2509c609719bSwdenk indicated a CRC error). 2510c609719bSwdenk 25116d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_INIT 2512c609719bSwdenk 2513c609719bSwdenk Maximum time to wait for the INIT_B line to deassert 2514c609719bSwdenk after PROB_B has been deasserted during a Virtex II 2515c609719bSwdenk FPGA configuration sequence. The default time is 500 251611ccc33fSMarcel Ziswiler ms. 2517c609719bSwdenk 25186d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_BUSY 2519c609719bSwdenk 2520c609719bSwdenk Maximum time to wait for BUSY to deassert during 252111ccc33fSMarcel Ziswiler Virtex II FPGA configuration. The default is 5 ms. 2522c609719bSwdenk 25236d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_CONFIG 2524c609719bSwdenk 2525c609719bSwdenk Time to wait after FPGA configuration. The default is 252611ccc33fSMarcel Ziswiler 200 ms. 2527c609719bSwdenk 2528c609719bSwdenk- Configuration Management: 2529c609719bSwdenk CONFIG_IDENT_STRING 2530c609719bSwdenk 2531c609719bSwdenk If defined, this string will be added to the U-Boot 2532c609719bSwdenk version information (U_BOOT_VERSION) 2533c609719bSwdenk 2534c609719bSwdenk- Vendor Parameter Protection: 2535c609719bSwdenk 2536c609719bSwdenk U-Boot considers the values of the environment 2537c609719bSwdenk variables "serial#" (Board Serial Number) and 25387152b1d0Swdenk "ethaddr" (Ethernet Address) to be parameters that 2539c609719bSwdenk are set once by the board vendor / manufacturer, and 2540c609719bSwdenk protects these variables from casual modification by 2541c609719bSwdenk the user. Once set, these variables are read-only, 2542c609719bSwdenk and write or delete attempts are rejected. You can 254311ccc33fSMarcel Ziswiler change this behaviour: 2544c609719bSwdenk 2545c609719bSwdenk If CONFIG_ENV_OVERWRITE is #defined in your config 2546c609719bSwdenk file, the write protection for vendor parameters is 254747cd00faSwdenk completely disabled. Anybody can change or delete 2548c609719bSwdenk these parameters. 2549c609719bSwdenk 2550c609719bSwdenk Alternatively, if you #define _both_ CONFIG_ETHADDR 2551c609719bSwdenk _and_ CONFIG_OVERWRITE_ETHADDR_ONCE, a default 255211ccc33fSMarcel Ziswiler Ethernet address is installed in the environment, 2553c609719bSwdenk which can be changed exactly ONCE by the user. [The 2554c609719bSwdenk serial# is unaffected by this, i. e. it remains 2555c609719bSwdenk read-only.] 2556c609719bSwdenk 25572598090bSJoe Hershberger The same can be accomplished in a more flexible way 25582598090bSJoe Hershberger for any variable by configuring the type of access 25592598090bSJoe Hershberger to allow for those variables in the ".flags" variable 25602598090bSJoe Hershberger or define CONFIG_ENV_FLAGS_LIST_STATIC. 25612598090bSJoe Hershberger 2562c609719bSwdenk- Protected RAM: 2563c609719bSwdenk CONFIG_PRAM 2564c609719bSwdenk 2565c609719bSwdenk Define this variable to enable the reservation of 2566c609719bSwdenk "protected RAM", i. e. RAM which is not overwritten 2567c609719bSwdenk by U-Boot. Define CONFIG_PRAM to hold the number of 2568c609719bSwdenk kB you want to reserve for pRAM. You can overwrite 2569c609719bSwdenk this default value by defining an environment 2570c609719bSwdenk variable "pram" to the number of kB you want to 2571c609719bSwdenk reserve. Note that the board info structure will 2572c609719bSwdenk still show the full amount of RAM. If pRAM is 2573c609719bSwdenk reserved, a new environment variable "mem" will 2574c609719bSwdenk automatically be defined to hold the amount of 2575c609719bSwdenk remaining RAM in a form that can be passed as boot 2576c609719bSwdenk argument to Linux, for instance like that: 2577c609719bSwdenk 2578fe126d8bSWolfgang Denk setenv bootargs ... mem=\${mem} 2579c609719bSwdenk saveenv 2580c609719bSwdenk 2581c609719bSwdenk This way you can tell Linux not to use this memory, 2582c609719bSwdenk either, which results in a memory region that will 2583c609719bSwdenk not be affected by reboots. 2584c609719bSwdenk 2585c609719bSwdenk *WARNING* If your board configuration uses automatic 2586c609719bSwdenk detection of the RAM size, you must make sure that 2587c609719bSwdenk this memory test is non-destructive. So far, the 2588c609719bSwdenk following board configurations are known to be 2589c609719bSwdenk "pRAM-clean": 2590c609719bSwdenk 25911b0757ecSWolfgang Denk IVMS8, IVML24, SPD8xx, TQM8xxL, 25921b0757ecSWolfgang Denk HERMES, IP860, RPXlite, LWMON, 2593544d97e9SWolfgang Denk FLAGADM, TQM8260 2594c609719bSwdenk 259540fef049SGabe Black- Access to physical memory region (> 4GB) 259640fef049SGabe Black Some basic support is provided for operations on memory not 259740fef049SGabe Black normally accessible to U-Boot - e.g. some architectures 259840fef049SGabe Black support access to more than 4GB of memory on 32-bit 259940fef049SGabe Black machines using physical address extension or similar. 260040fef049SGabe Black Define CONFIG_PHYSMEM to access this basic support, which 260140fef049SGabe Black currently only supports clearing the memory. 260240fef049SGabe Black 2603c609719bSwdenk- Error Recovery: 2604c609719bSwdenk CONFIG_PANIC_HANG 2605c609719bSwdenk 2606c609719bSwdenk Define this variable to stop the system in case of a 2607c609719bSwdenk fatal error, so that you have to reset it manually. 2608c609719bSwdenk This is probably NOT a good idea for an embedded 260911ccc33fSMarcel Ziswiler system where you want the system to reboot 2610c609719bSwdenk automatically as fast as possible, but it may be 2611c609719bSwdenk useful during development since you can try to debug 2612c609719bSwdenk the conditions that lead to the situation. 2613c609719bSwdenk 2614c609719bSwdenk CONFIG_NET_RETRY_COUNT 2615c609719bSwdenk 2616c609719bSwdenk This variable defines the number of retries for 2617c609719bSwdenk network operations like ARP, RARP, TFTP, or BOOTP 2618c609719bSwdenk before giving up the operation. If not defined, a 2619c609719bSwdenk default value of 5 is used. 2620c609719bSwdenk 262140cb90eeSGuennadi Liakhovetski CONFIG_ARP_TIMEOUT 262240cb90eeSGuennadi Liakhovetski 262340cb90eeSGuennadi Liakhovetski Timeout waiting for an ARP reply in milliseconds. 262440cb90eeSGuennadi Liakhovetski 262548a3e999STetsuyuki Kobayashi CONFIG_NFS_TIMEOUT 262648a3e999STetsuyuki Kobayashi 262748a3e999STetsuyuki Kobayashi Timeout in milliseconds used in NFS protocol. 262848a3e999STetsuyuki Kobayashi If you encounter "ERROR: Cannot umount" in nfs command, 262948a3e999STetsuyuki Kobayashi try longer timeout such as 263048a3e999STetsuyuki Kobayashi #define CONFIG_NFS_TIMEOUT 10000UL 263148a3e999STetsuyuki Kobayashi 2632c609719bSwdenk- Command Interpreter: 26338078f1a5SWolfgang Denk CONFIG_AUTO_COMPLETE 263404a85b3bSwdenk 263504a85b3bSwdenk Enable auto completion of commands using TAB. 263604a85b3bSwdenk 26378078f1a5SWolfgang Denk Note that this feature has NOT been implemented yet 26388078f1a5SWolfgang Denk for the "hush" shell. 26398078f1a5SWolfgang Denk 26408078f1a5SWolfgang Denk 26416d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_HUSH_PARSER 2642c609719bSwdenk 2643c609719bSwdenk Define this variable to enable the "hush" shell (from 2644c609719bSwdenk Busybox) as command line interpreter, thus enabling 2645c609719bSwdenk powerful command line syntax like 2646c609719bSwdenk if...then...else...fi conditionals or `&&' and '||' 2647c609719bSwdenk constructs ("shell scripts"). 2648c609719bSwdenk 2649c609719bSwdenk If undefined, you get the old, much simpler behaviour 2650c609719bSwdenk with a somewhat smaller memory footprint. 2651c609719bSwdenk 2652c609719bSwdenk 26536d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PROMPT_HUSH_PS2 2654c609719bSwdenk 2655c609719bSwdenk This defines the secondary prompt string, which is 2656c609719bSwdenk printed when the command interpreter needs more input 2657c609719bSwdenk to complete a command. Usually "> ". 2658c609719bSwdenk 2659c609719bSwdenk Note: 2660c609719bSwdenk 2661c609719bSwdenk In the current implementation, the local variables 2662c609719bSwdenk space and global environment variables space are 2663c609719bSwdenk separated. Local variables are those you define by 26643b57fe0aSwdenk simply typing `name=value'. To access a local 2665c609719bSwdenk variable later on, you have write `$name' or 26663b57fe0aSwdenk `${name}'; to execute the contents of a variable 26673b57fe0aSwdenk directly type `$name' at the command prompt. 2668c609719bSwdenk 2669c609719bSwdenk Global environment variables are those you use 2670c609719bSwdenk setenv/printenv to work with. To run a command stored 2671c609719bSwdenk in such a variable, you need to use the run command, 2672c609719bSwdenk and you must not use the '$' sign to access them. 2673c609719bSwdenk 2674c609719bSwdenk To store commands and special characters in a 2675c609719bSwdenk variable, please use double quotation marks 2676c609719bSwdenk surrounding the whole text of the variable, instead 2677c609719bSwdenk of the backslashes before semicolons and special 2678c609719bSwdenk symbols. 2679c609719bSwdenk 2680aa0c71acSWolfgang Denk- Commandline Editing and History: 2681aa0c71acSWolfgang Denk CONFIG_CMDLINE_EDITING 2682aa0c71acSWolfgang Denk 268311ccc33fSMarcel Ziswiler Enable editing and History functions for interactive 2684aa0c71acSWolfgang Denk commandline input operations 2685aa0c71acSWolfgang Denk 2686a8c7c708Swdenk- Default Environment: 2687c609719bSwdenk CONFIG_EXTRA_ENV_SETTINGS 2688c609719bSwdenk 2689c609719bSwdenk Define this to contain any number of null terminated 2690c609719bSwdenk strings (variable = value pairs) that will be part of 26917152b1d0Swdenk the default environment compiled into the boot image. 26922262cfeeSwdenk 2693c609719bSwdenk For example, place something like this in your 2694c609719bSwdenk board's config file: 2695c609719bSwdenk 2696c609719bSwdenk #define CONFIG_EXTRA_ENV_SETTINGS \ 2697c609719bSwdenk "myvar1=value1\0" \ 2698c609719bSwdenk "myvar2=value2\0" 2699c609719bSwdenk 2700c609719bSwdenk Warning: This method is based on knowledge about the 2701c609719bSwdenk internal format how the environment is stored by the 27022262cfeeSwdenk U-Boot code. This is NOT an official, exported 2703c609719bSwdenk interface! Although it is unlikely that this format 27047152b1d0Swdenk will change soon, there is no guarantee either. 2705c609719bSwdenk You better know what you are doing here. 2706c609719bSwdenk 2707c609719bSwdenk Note: overly (ab)use of the default environment is 2708c609719bSwdenk discouraged. Make sure to check other ways to preset 270974de7aefSWolfgang Denk the environment like the "source" command or the 2710c609719bSwdenk boot command first. 2711c609719bSwdenk 27125e724ca2SStephen Warren CONFIG_ENV_VARS_UBOOT_CONFIG 27135e724ca2SStephen Warren 27145e724ca2SStephen Warren Define this in order to add variables describing the 27155e724ca2SStephen Warren U-Boot build configuration to the default environment. 27165e724ca2SStephen Warren These will be named arch, cpu, board, vendor, and soc. 27175e724ca2SStephen Warren 27185e724ca2SStephen Warren Enabling this option will cause the following to be defined: 27195e724ca2SStephen Warren 27205e724ca2SStephen Warren - CONFIG_SYS_ARCH 27215e724ca2SStephen Warren - CONFIG_SYS_CPU 27225e724ca2SStephen Warren - CONFIG_SYS_BOARD 27235e724ca2SStephen Warren - CONFIG_SYS_VENDOR 27245e724ca2SStephen Warren - CONFIG_SYS_SOC 27255e724ca2SStephen Warren 27267e27f89fSTom Rini CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG 27277e27f89fSTom Rini 27287e27f89fSTom Rini Define this in order to add variables describing certain 27297e27f89fSTom Rini run-time determined information about the hardware to the 27307e27f89fSTom Rini environment. These will be named board_name, board_rev. 27317e27f89fSTom Rini 273206fd8538SSimon Glass CONFIG_DELAY_ENVIRONMENT 273306fd8538SSimon Glass 273406fd8538SSimon Glass Normally the environment is loaded when the board is 273506fd8538SSimon Glass intialised so that it is available to U-Boot. This inhibits 273606fd8538SSimon Glass that so that the environment is not available until 273706fd8538SSimon Glass explicitly loaded later by U-Boot code. With CONFIG_OF_CONTROL 273806fd8538SSimon Glass this is instead controlled by the value of 273906fd8538SSimon Glass /config/load-environment. 274006fd8538SSimon Glass 2741a8c7c708Swdenk- DataFlash Support: 27422abbe075Swdenk CONFIG_HAS_DATAFLASH 27432abbe075Swdenk 27442abbe075Swdenk Defining this option enables DataFlash features and 27452abbe075Swdenk allows to read/write in Dataflash via the standard 27462abbe075Swdenk commands cp, md... 27472abbe075Swdenk 2748f61ec45eSEric Nelson- Serial Flash support 2749f61ec45eSEric Nelson CONFIG_CMD_SF 2750f61ec45eSEric Nelson 2751f61ec45eSEric Nelson Defining this option enables SPI flash commands 2752f61ec45eSEric Nelson 'sf probe/read/write/erase/update'. 2753f61ec45eSEric Nelson 2754f61ec45eSEric Nelson Usage requires an initial 'probe' to define the serial 2755f61ec45eSEric Nelson flash parameters, followed by read/write/erase/update 2756f61ec45eSEric Nelson commands. 2757f61ec45eSEric Nelson 2758f61ec45eSEric Nelson The following defaults may be provided by the platform 2759f61ec45eSEric Nelson to handle the common case when only a single serial 2760f61ec45eSEric Nelson flash is present on the system. 2761f61ec45eSEric Nelson 2762f61ec45eSEric Nelson CONFIG_SF_DEFAULT_BUS Bus identifier 2763f61ec45eSEric Nelson CONFIG_SF_DEFAULT_CS Chip-select 2764f61ec45eSEric Nelson CONFIG_SF_DEFAULT_MODE (see include/spi.h) 2765f61ec45eSEric Nelson CONFIG_SF_DEFAULT_SPEED in Hz 2766f61ec45eSEric Nelson 276724007273SSimon Glass CONFIG_CMD_SF_TEST 276824007273SSimon Glass 276924007273SSimon Glass Define this option to include a destructive SPI flash 277024007273SSimon Glass test ('sf test'). 277124007273SSimon Glass 27721dcd6d03SJagannadha Sutradharudu Teki CONFIG_SPI_FLASH_BAR Ban/Extended Addr Reg 27731dcd6d03SJagannadha Sutradharudu Teki 27741dcd6d03SJagannadha Sutradharudu Teki Define this option to use the Bank addr/Extended addr 27751dcd6d03SJagannadha Sutradharudu Teki support on SPI flashes which has size > 16Mbytes. 27761dcd6d03SJagannadha Sutradharudu Teki 2777b902e07cSJagannadha Sutradharudu Teki CONFIG_SF_DUAL_FLASH Dual flash memories 2778b902e07cSJagannadha Sutradharudu Teki 2779b902e07cSJagannadha Sutradharudu Teki Define this option to use dual flash support where two flash 2780b902e07cSJagannadha Sutradharudu Teki memories can be connected with a given cs line. 2781b902e07cSJagannadha Sutradharudu Teki currently Xilinx Zynq qspi support these type of connections. 2782b902e07cSJagannadha Sutradharudu Teki 27833f85ce27Swdenk- SystemACE Support: 27843f85ce27Swdenk CONFIG_SYSTEMACE 27853f85ce27Swdenk 27863f85ce27Swdenk Adding this option adds support for Xilinx SystemACE 27873f85ce27Swdenk chips attached via some sort of local bus. The address 278811ccc33fSMarcel Ziswiler of the chip must also be defined in the 27896d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SYSTEMACE_BASE macro. For example: 27903f85ce27Swdenk 27913f85ce27Swdenk #define CONFIG_SYSTEMACE 27926d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_SYSTEMACE_BASE 0xf0000000 27933f85ce27Swdenk 27943f85ce27Swdenk When SystemACE support is added, the "ace" device type 27953f85ce27Swdenk becomes available to the fat commands, i.e. fatls. 27963f85ce27Swdenk 2797ecb0ccd9SWolfgang Denk- TFTP Fixed UDP Port: 2798ecb0ccd9SWolfgang Denk CONFIG_TFTP_PORT 2799ecb0ccd9SWolfgang Denk 280028cb9375SWolfgang Denk If this is defined, the environment variable tftpsrcp 2801ecb0ccd9SWolfgang Denk is used to supply the TFTP UDP source port value. 280228cb9375SWolfgang Denk If tftpsrcp isn't defined, the normal pseudo-random port 2803ecb0ccd9SWolfgang Denk number generator is used. 2804ecb0ccd9SWolfgang Denk 280528cb9375SWolfgang Denk Also, the environment variable tftpdstp is used to supply 280628cb9375SWolfgang Denk the TFTP UDP destination port value. If tftpdstp isn't 280728cb9375SWolfgang Denk defined, the normal port 69 is used. 280828cb9375SWolfgang Denk 280928cb9375SWolfgang Denk The purpose for tftpsrcp is to allow a TFTP server to 2810ecb0ccd9SWolfgang Denk blindly start the TFTP transfer using the pre-configured 2811ecb0ccd9SWolfgang Denk target IP address and UDP port. This has the effect of 2812ecb0ccd9SWolfgang Denk "punching through" the (Windows XP) firewall, allowing 2813ecb0ccd9SWolfgang Denk the remainder of the TFTP transfer to proceed normally. 2814ecb0ccd9SWolfgang Denk A better solution is to properly configure the firewall, 2815ecb0ccd9SWolfgang Denk but sometimes that is not allowed. 2816ecb0ccd9SWolfgang Denk 2817bf36c5d5SSimon Glass- Hashing support: 2818bf36c5d5SSimon Glass CONFIG_CMD_HASH 2819bf36c5d5SSimon Glass 2820bf36c5d5SSimon Glass This enables a generic 'hash' command which can produce 2821bf36c5d5SSimon Glass hashes / digests from a few algorithms (e.g. SHA1, SHA256). 2822bf36c5d5SSimon Glass 2823bf36c5d5SSimon Glass CONFIG_HASH_VERIFY 2824bf36c5d5SSimon Glass 2825bf36c5d5SSimon Glass Enable the hash verify command (hash -v). This adds to code 2826bf36c5d5SSimon Glass size a little. 2827bf36c5d5SSimon Glass 2828bf36c5d5SSimon Glass CONFIG_SHA1 - support SHA1 hashing 2829bf36c5d5SSimon Glass CONFIG_SHA256 - support SHA256 hashing 2830bf36c5d5SSimon Glass 2831bf36c5d5SSimon Glass Note: There is also a sha1sum command, which should perhaps 2832bf36c5d5SSimon Glass be deprecated in favour of 'hash sha1'. 2833bf36c5d5SSimon Glass 2834a11f1873SRobert Winkler- Freescale i.MX specific commands: 2835a11f1873SRobert Winkler CONFIG_CMD_HDMIDETECT 2836a11f1873SRobert Winkler This enables 'hdmidet' command which returns true if an 2837a11f1873SRobert Winkler HDMI monitor is detected. This command is i.MX 6 specific. 2838a11f1873SRobert Winkler 2839a11f1873SRobert Winkler CONFIG_CMD_BMODE 2840a11f1873SRobert Winkler This enables the 'bmode' (bootmode) command for forcing 2841a11f1873SRobert Winkler a boot from specific media. 2842a11f1873SRobert Winkler 2843a11f1873SRobert Winkler This is useful for forcing the ROM's usb downloader to 2844a11f1873SRobert Winkler activate upon a watchdog reset which is nice when iterating 2845a11f1873SRobert Winkler on U-Boot. Using the reset button or running bmode normal 2846a11f1873SRobert Winkler will set it back to normal. This command currently 2847a11f1873SRobert Winkler supports i.MX53 and i.MX6. 2848a11f1873SRobert Winkler 284919c402afSSimon Glass- Signing support: 285019c402afSSimon Glass CONFIG_RSA 285119c402afSSimon Glass 285219c402afSSimon Glass This enables the RSA algorithm used for FIT image verification 2853*8bf2aad7SDetlev Zundel in U-Boot. See doc/uImage.FIT/signature.txt for more information. 285419c402afSSimon Glass 285519c402afSSimon Glass The signing part is build into mkimage regardless of this 285619c402afSSimon Glass option. 285719c402afSSimon Glass 285819c402afSSimon Glass 2859a8c7c708Swdenk- Show boot progress: 2860c609719bSwdenk CONFIG_SHOW_BOOT_PROGRESS 2861c609719bSwdenk 2862c609719bSwdenk Defining this option allows to add some board- 2863c609719bSwdenk specific code (calling a user-provided function 2864c609719bSwdenk "show_boot_progress(int)") that enables you to show 2865c609719bSwdenk the system's boot progress on some display (for 2866c609719bSwdenk example, some LED's) on your board. At the moment, 2867c609719bSwdenk the following checkpoints are implemented: 2868c609719bSwdenk 28693a608ca0SSimon Glass- Detailed boot stage timing 28703a608ca0SSimon Glass CONFIG_BOOTSTAGE 28713a608ca0SSimon Glass Define this option to get detailed timing of each stage 28723a608ca0SSimon Glass of the boot process. 28733a608ca0SSimon Glass 28743a608ca0SSimon Glass CONFIG_BOOTSTAGE_USER_COUNT 28753a608ca0SSimon Glass This is the number of available user bootstage records. 28763a608ca0SSimon Glass Each time you call bootstage_mark(BOOTSTAGE_ID_ALLOC, ...) 28773a608ca0SSimon Glass a new ID will be allocated from this stash. If you exceed 28783a608ca0SSimon Glass the limit, recording will stop. 28793a608ca0SSimon Glass 28803a608ca0SSimon Glass CONFIG_BOOTSTAGE_REPORT 28813a608ca0SSimon Glass Define this to print a report before boot, similar to this: 28823a608ca0SSimon Glass 28833a608ca0SSimon Glass Timer summary in microseconds: 28843a608ca0SSimon Glass Mark Elapsed Stage 28853a608ca0SSimon Glass 0 0 reset 28863a608ca0SSimon Glass 3,575,678 3,575,678 board_init_f start 28873a608ca0SSimon Glass 3,575,695 17 arch_cpu_init A9 28883a608ca0SSimon Glass 3,575,777 82 arch_cpu_init done 28893a608ca0SSimon Glass 3,659,598 83,821 board_init_r start 28903a608ca0SSimon Glass 3,910,375 250,777 main_loop 28913a608ca0SSimon Glass 29,916,167 26,005,792 bootm_start 28923a608ca0SSimon Glass 30,361,327 445,160 start_kernel 28933a608ca0SSimon Glass 28942eba38cfSSimon Glass CONFIG_CMD_BOOTSTAGE 28952eba38cfSSimon Glass Add a 'bootstage' command which supports printing a report 28962eba38cfSSimon Glass and un/stashing of bootstage data. 28972eba38cfSSimon Glass 289894fd1316SSimon Glass CONFIG_BOOTSTAGE_FDT 289994fd1316SSimon Glass Stash the bootstage information in the FDT. A root 'bootstage' 290094fd1316SSimon Glass node is created with each bootstage id as a child. Each child 290194fd1316SSimon Glass has a 'name' property and either 'mark' containing the 290294fd1316SSimon Glass mark time in microsecond, or 'accum' containing the 290394fd1316SSimon Glass accumulated time for that bootstage id in microseconds. 290494fd1316SSimon Glass For example: 290594fd1316SSimon Glass 290694fd1316SSimon Glass bootstage { 290794fd1316SSimon Glass 154 { 290894fd1316SSimon Glass name = "board_init_f"; 290994fd1316SSimon Glass mark = <3575678>; 291094fd1316SSimon Glass }; 291194fd1316SSimon Glass 170 { 291294fd1316SSimon Glass name = "lcd"; 291394fd1316SSimon Glass accum = <33482>; 291494fd1316SSimon Glass }; 291594fd1316SSimon Glass }; 291694fd1316SSimon Glass 291794fd1316SSimon Glass Code in the Linux kernel can find this in /proc/devicetree. 291894fd1316SSimon Glass 29191372cce2SMarian BalakowiczLegacy uImage format: 29201372cce2SMarian Balakowicz 2921c609719bSwdenk Arg Where When 2922c609719bSwdenk 1 common/cmd_bootm.c before attempting to boot an image 2923c609719bSwdenk -1 common/cmd_bootm.c Image header has bad magic number 2924c609719bSwdenk 2 common/cmd_bootm.c Image header has correct magic number 2925c609719bSwdenk -2 common/cmd_bootm.c Image header has bad checksum 2926c609719bSwdenk 3 common/cmd_bootm.c Image header has correct checksum 2927c609719bSwdenk -3 common/cmd_bootm.c Image data has bad checksum 2928c609719bSwdenk 4 common/cmd_bootm.c Image data has correct checksum 2929c609719bSwdenk -4 common/cmd_bootm.c Image is for unsupported architecture 2930c609719bSwdenk 5 common/cmd_bootm.c Architecture check OK 29311372cce2SMarian Balakowicz -5 common/cmd_bootm.c Wrong Image Type (not kernel, multi) 2932c609719bSwdenk 6 common/cmd_bootm.c Image Type check OK 2933c609719bSwdenk -6 common/cmd_bootm.c gunzip uncompression error 2934c609719bSwdenk -7 common/cmd_bootm.c Unimplemented compression type 2935c609719bSwdenk 7 common/cmd_bootm.c Uncompression OK 29361372cce2SMarian Balakowicz 8 common/cmd_bootm.c No uncompress/copy overwrite error 2937c609719bSwdenk -9 common/cmd_bootm.c Unsupported OS (not Linux, BSD, VxWorks, QNX) 29381372cce2SMarian Balakowicz 29391372cce2SMarian Balakowicz 9 common/image.c Start initial ramdisk verification 29401372cce2SMarian Balakowicz -10 common/image.c Ramdisk header has bad magic number 29411372cce2SMarian Balakowicz -11 common/image.c Ramdisk header has bad checksum 29421372cce2SMarian Balakowicz 10 common/image.c Ramdisk header is OK 29431372cce2SMarian Balakowicz -12 common/image.c Ramdisk data has bad checksum 29441372cce2SMarian Balakowicz 11 common/image.c Ramdisk data has correct checksum 29451372cce2SMarian Balakowicz 12 common/image.c Ramdisk verification complete, start loading 294611ccc33fSMarcel Ziswiler -13 common/image.c Wrong Image Type (not PPC Linux ramdisk) 29471372cce2SMarian Balakowicz 13 common/image.c Start multifile image verification 29481372cce2SMarian Balakowicz 14 common/image.c No initial ramdisk, no multifile, continue. 29491372cce2SMarian Balakowicz 2950ea0364f1SPeter Tyser 15 arch/<arch>/lib/bootm.c All preparation done, transferring control to OS 2951c609719bSwdenk 2952a47a12beSStefan Roese -30 arch/powerpc/lib/board.c Fatal error, hang the system 295363e73c9aSwdenk -31 post/post.c POST test failed, detected by post_output_backlog() 295463e73c9aSwdenk -32 post/post.c POST test failed, detected by post_run_single() 295563e73c9aSwdenk 2956566a494fSHeiko Schocher 34 common/cmd_doc.c before loading a Image from a DOC device 2957566a494fSHeiko Schocher -35 common/cmd_doc.c Bad usage of "doc" command 2958566a494fSHeiko Schocher 35 common/cmd_doc.c correct usage of "doc" command 2959566a494fSHeiko Schocher -36 common/cmd_doc.c No boot device 2960566a494fSHeiko Schocher 36 common/cmd_doc.c correct boot device 2961566a494fSHeiko Schocher -37 common/cmd_doc.c Unknown Chip ID on boot device 2962566a494fSHeiko Schocher 37 common/cmd_doc.c correct chip ID found, device available 2963566a494fSHeiko Schocher -38 common/cmd_doc.c Read Error on boot device 2964566a494fSHeiko Schocher 38 common/cmd_doc.c reading Image header from DOC device OK 2965566a494fSHeiko Schocher -39 common/cmd_doc.c Image header has bad magic number 2966566a494fSHeiko Schocher 39 common/cmd_doc.c Image header has correct magic number 2967566a494fSHeiko Schocher -40 common/cmd_doc.c Error reading Image from DOC device 2968566a494fSHeiko Schocher 40 common/cmd_doc.c Image header has correct magic number 2969566a494fSHeiko Schocher 41 common/cmd_ide.c before loading a Image from a IDE device 2970566a494fSHeiko Schocher -42 common/cmd_ide.c Bad usage of "ide" command 2971566a494fSHeiko Schocher 42 common/cmd_ide.c correct usage of "ide" command 2972566a494fSHeiko Schocher -43 common/cmd_ide.c No boot device 2973566a494fSHeiko Schocher 43 common/cmd_ide.c boot device found 2974566a494fSHeiko Schocher -44 common/cmd_ide.c Device not available 2975566a494fSHeiko Schocher 44 common/cmd_ide.c Device available 2976566a494fSHeiko Schocher -45 common/cmd_ide.c wrong partition selected 2977566a494fSHeiko Schocher 45 common/cmd_ide.c partition selected 2978566a494fSHeiko Schocher -46 common/cmd_ide.c Unknown partition table 2979566a494fSHeiko Schocher 46 common/cmd_ide.c valid partition table found 2980566a494fSHeiko Schocher -47 common/cmd_ide.c Invalid partition type 2981566a494fSHeiko Schocher 47 common/cmd_ide.c correct partition type 2982566a494fSHeiko Schocher -48 common/cmd_ide.c Error reading Image Header on boot device 2983566a494fSHeiko Schocher 48 common/cmd_ide.c reading Image Header from IDE device OK 2984566a494fSHeiko Schocher -49 common/cmd_ide.c Image header has bad magic number 2985566a494fSHeiko Schocher 49 common/cmd_ide.c Image header has correct magic number 2986566a494fSHeiko Schocher -50 common/cmd_ide.c Image header has bad checksum 2987566a494fSHeiko Schocher 50 common/cmd_ide.c Image header has correct checksum 2988566a494fSHeiko Schocher -51 common/cmd_ide.c Error reading Image from IDE device 2989566a494fSHeiko Schocher 51 common/cmd_ide.c reading Image from IDE device OK 2990566a494fSHeiko Schocher 52 common/cmd_nand.c before loading a Image from a NAND device 2991566a494fSHeiko Schocher -53 common/cmd_nand.c Bad usage of "nand" command 2992566a494fSHeiko Schocher 53 common/cmd_nand.c correct usage of "nand" command 2993566a494fSHeiko Schocher -54 common/cmd_nand.c No boot device 2994566a494fSHeiko Schocher 54 common/cmd_nand.c boot device found 2995566a494fSHeiko Schocher -55 common/cmd_nand.c Unknown Chip ID on boot device 2996566a494fSHeiko Schocher 55 common/cmd_nand.c correct chip ID found, device available 2997566a494fSHeiko Schocher -56 common/cmd_nand.c Error reading Image Header on boot device 2998566a494fSHeiko Schocher 56 common/cmd_nand.c reading Image Header from NAND device OK 2999566a494fSHeiko Schocher -57 common/cmd_nand.c Image header has bad magic number 3000566a494fSHeiko Schocher 57 common/cmd_nand.c Image header has correct magic number 3001566a494fSHeiko Schocher -58 common/cmd_nand.c Error reading Image from NAND device 3002566a494fSHeiko Schocher 58 common/cmd_nand.c reading Image from NAND device OK 3003c609719bSwdenk 3004566a494fSHeiko Schocher -60 common/env_common.c Environment has a bad CRC, using default 3005c609719bSwdenk 3006566a494fSHeiko Schocher 64 net/eth.c starting with Ethernet configuration. 3007566a494fSHeiko Schocher -64 net/eth.c no Ethernet found. 3008566a494fSHeiko Schocher 65 net/eth.c Ethernet found. 3009206c60cbSwdenk 3010566a494fSHeiko Schocher -80 common/cmd_net.c usage wrong 3011566a494fSHeiko Schocher 80 common/cmd_net.c before calling NetLoop() 301211ccc33fSMarcel Ziswiler -81 common/cmd_net.c some error in NetLoop() occurred 3013566a494fSHeiko Schocher 81 common/cmd_net.c NetLoop() back without error 3014566a494fSHeiko Schocher -82 common/cmd_net.c size == 0 (File with size 0 loaded) 3015566a494fSHeiko Schocher 82 common/cmd_net.c trying automatic boot 301674de7aefSWolfgang Denk 83 common/cmd_net.c running "source" command 301774de7aefSWolfgang Denk -83 common/cmd_net.c some error in automatic boot or "source" command 3018566a494fSHeiko Schocher 84 common/cmd_net.c end without errors 3019c609719bSwdenk 30201372cce2SMarian BalakowiczFIT uImage format: 30211372cce2SMarian Balakowicz 30221372cce2SMarian Balakowicz Arg Where When 30231372cce2SMarian Balakowicz 100 common/cmd_bootm.c Kernel FIT Image has correct format 30241372cce2SMarian Balakowicz -100 common/cmd_bootm.c Kernel FIT Image has incorrect format 30251372cce2SMarian Balakowicz 101 common/cmd_bootm.c No Kernel subimage unit name, using configuration 30261372cce2SMarian Balakowicz -101 common/cmd_bootm.c Can't get configuration for kernel subimage 30271372cce2SMarian Balakowicz 102 common/cmd_bootm.c Kernel unit name specified 30281372cce2SMarian Balakowicz -103 common/cmd_bootm.c Can't get kernel subimage node offset 3029f773bea8SMarian Balakowicz 103 common/cmd_bootm.c Found configuration node 30301372cce2SMarian Balakowicz 104 common/cmd_bootm.c Got kernel subimage node offset 30311372cce2SMarian Balakowicz -104 common/cmd_bootm.c Kernel subimage hash verification failed 30321372cce2SMarian Balakowicz 105 common/cmd_bootm.c Kernel subimage hash verification OK 30331372cce2SMarian Balakowicz -105 common/cmd_bootm.c Kernel subimage is for unsupported architecture 30341372cce2SMarian Balakowicz 106 common/cmd_bootm.c Architecture check OK 303511ccc33fSMarcel Ziswiler -106 common/cmd_bootm.c Kernel subimage has wrong type 303611ccc33fSMarcel Ziswiler 107 common/cmd_bootm.c Kernel subimage type OK 30371372cce2SMarian Balakowicz -107 common/cmd_bootm.c Can't get kernel subimage data/size 30381372cce2SMarian Balakowicz 108 common/cmd_bootm.c Got kernel subimage data/size 30391372cce2SMarian Balakowicz -108 common/cmd_bootm.c Wrong image type (not legacy, FIT) 30401372cce2SMarian Balakowicz -109 common/cmd_bootm.c Can't get kernel subimage type 30411372cce2SMarian Balakowicz -110 common/cmd_bootm.c Can't get kernel subimage comp 30421372cce2SMarian Balakowicz -111 common/cmd_bootm.c Can't get kernel subimage os 30431372cce2SMarian Balakowicz -112 common/cmd_bootm.c Can't get kernel subimage load address 30441372cce2SMarian Balakowicz -113 common/cmd_bootm.c Image uncompress/copy overwrite error 30451372cce2SMarian Balakowicz 30461372cce2SMarian Balakowicz 120 common/image.c Start initial ramdisk verification 30471372cce2SMarian Balakowicz -120 common/image.c Ramdisk FIT image has incorrect format 30481372cce2SMarian Balakowicz 121 common/image.c Ramdisk FIT image has correct format 304911ccc33fSMarcel Ziswiler 122 common/image.c No ramdisk subimage unit name, using configuration 30501372cce2SMarian Balakowicz -122 common/image.c Can't get configuration for ramdisk subimage 30511372cce2SMarian Balakowicz 123 common/image.c Ramdisk unit name specified 30521372cce2SMarian Balakowicz -124 common/image.c Can't get ramdisk subimage node offset 30531372cce2SMarian Balakowicz 125 common/image.c Got ramdisk subimage node offset 30541372cce2SMarian Balakowicz -125 common/image.c Ramdisk subimage hash verification failed 30551372cce2SMarian Balakowicz 126 common/image.c Ramdisk subimage hash verification OK 30561372cce2SMarian Balakowicz -126 common/image.c Ramdisk subimage for unsupported architecture 30571372cce2SMarian Balakowicz 127 common/image.c Architecture check OK 30581372cce2SMarian Balakowicz -127 common/image.c Can't get ramdisk subimage data/size 30591372cce2SMarian Balakowicz 128 common/image.c Got ramdisk subimage data/size 30601372cce2SMarian Balakowicz 129 common/image.c Can't get ramdisk load address 30611372cce2SMarian Balakowicz -129 common/image.c Got ramdisk load address 30621372cce2SMarian Balakowicz 306311ccc33fSMarcel Ziswiler -130 common/cmd_doc.c Incorrect FIT image format 30641372cce2SMarian Balakowicz 131 common/cmd_doc.c FIT image format OK 30651372cce2SMarian Balakowicz 306611ccc33fSMarcel Ziswiler -140 common/cmd_ide.c Incorrect FIT image format 30671372cce2SMarian Balakowicz 141 common/cmd_ide.c FIT image format OK 30681372cce2SMarian Balakowicz 306911ccc33fSMarcel Ziswiler -150 common/cmd_nand.c Incorrect FIT image format 30701372cce2SMarian Balakowicz 151 common/cmd_nand.c FIT image format OK 30711372cce2SMarian Balakowicz 3072d95f6ec7SGabe Black- FIT image support: 3073d95f6ec7SGabe Black CONFIG_FIT 3074d95f6ec7SGabe Black Enable support for the FIT uImage format. 3075d95f6ec7SGabe Black 3076d95f6ec7SGabe Black CONFIG_FIT_BEST_MATCH 3077d95f6ec7SGabe Black When no configuration is explicitly selected, default to the 3078d95f6ec7SGabe Black one whose fdt's compatibility field best matches that of 3079d95f6ec7SGabe Black U-Boot itself. A match is considered "best" if it matches the 3080d95f6ec7SGabe Black most specific compatibility entry of U-Boot's fdt's root node. 3081d95f6ec7SGabe Black The order of entries in the configuration's fdt is ignored. 3082d95f6ec7SGabe Black 30833e569a6bSSimon Glass CONFIG_FIT_SIGNATURE 30843e569a6bSSimon Glass This option enables signature verification of FIT uImages, 30853e569a6bSSimon Glass using a hash signed and verified using RSA. See 30863e569a6bSSimon Glass doc/uImage.FIT/signature.txt for more details. 30873e569a6bSSimon Glass 30884cf2609bSWolfgang Denk- Standalone program support: 30894cf2609bSWolfgang Denk CONFIG_STANDALONE_LOAD_ADDR 30904cf2609bSWolfgang Denk 30916feff899SWolfgang Denk This option defines a board specific value for the 30926feff899SWolfgang Denk address where standalone program gets loaded, thus 30936feff899SWolfgang Denk overwriting the architecture dependent default 30944cf2609bSWolfgang Denk settings. 30954cf2609bSWolfgang Denk 30964cf2609bSWolfgang Denk- Frame Buffer Address: 30974cf2609bSWolfgang Denk CONFIG_FB_ADDR 30984cf2609bSWolfgang Denk 30994cf2609bSWolfgang Denk Define CONFIG_FB_ADDR if you want to use specific 310044a53b57SWolfgang Denk address for frame buffer. This is typically the case 310144a53b57SWolfgang Denk when using a graphics controller has separate video 310244a53b57SWolfgang Denk memory. U-Boot will then place the frame buffer at 310344a53b57SWolfgang Denk the given address instead of dynamically reserving it 310444a53b57SWolfgang Denk in system RAM by calling lcd_setmem(), which grabs 310544a53b57SWolfgang Denk the memory for the frame buffer depending on the 310644a53b57SWolfgang Denk configured panel size. 31074cf2609bSWolfgang Denk 31084cf2609bSWolfgang Denk Please see board_init_f function. 31094cf2609bSWolfgang Denk 3110cccfc2abSDetlev Zundel- Automatic software updates via TFTP server 3111cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP 3112cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP_CNT_MAX 3113cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP_MSEC_MAX 3114cccfc2abSDetlev Zundel 3115cccfc2abSDetlev Zundel These options enable and control the auto-update feature; 3116cccfc2abSDetlev Zundel for a more detailed description refer to doc/README.update. 3117cccfc2abSDetlev Zundel 3118cccfc2abSDetlev Zundel- MTD Support (mtdparts command, UBI support) 3119cccfc2abSDetlev Zundel CONFIG_MTD_DEVICE 3120cccfc2abSDetlev Zundel 3121cccfc2abSDetlev Zundel Adds the MTD device infrastructure from the Linux kernel. 3122cccfc2abSDetlev Zundel Needed for mtdparts command support. 3123cccfc2abSDetlev Zundel 3124cccfc2abSDetlev Zundel CONFIG_MTD_PARTITIONS 3125cccfc2abSDetlev Zundel 3126cccfc2abSDetlev Zundel Adds the MTD partitioning infrastructure from the Linux 3127cccfc2abSDetlev Zundel kernel. Needed for UBI support. 3128cccfc2abSDetlev Zundel 312970c219cdSJoe Hershberger- UBI support 313070c219cdSJoe Hershberger CONFIG_CMD_UBI 313170c219cdSJoe Hershberger 313270c219cdSJoe Hershberger Adds commands for interacting with MTD partitions formatted 313370c219cdSJoe Hershberger with the UBI flash translation layer 313470c219cdSJoe Hershberger 313570c219cdSJoe Hershberger Requires also defining CONFIG_RBTREE 313670c219cdSJoe Hershberger 3137147162daSJoe Hershberger CONFIG_UBI_SILENCE_MSG 3138147162daSJoe Hershberger 3139147162daSJoe Hershberger Make the verbose messages from UBI stop printing. This leaves 3140147162daSJoe Hershberger warnings and errors enabled. 3141147162daSJoe Hershberger 314270c219cdSJoe Hershberger- UBIFS support 314370c219cdSJoe Hershberger CONFIG_CMD_UBIFS 314470c219cdSJoe Hershberger 314570c219cdSJoe Hershberger Adds commands for interacting with UBI volumes formatted as 314670c219cdSJoe Hershberger UBIFS. UBIFS is read-only in u-boot. 314770c219cdSJoe Hershberger 314870c219cdSJoe Hershberger Requires UBI support as well as CONFIG_LZO 314970c219cdSJoe Hershberger 3150147162daSJoe Hershberger CONFIG_UBIFS_SILENCE_MSG 3151147162daSJoe Hershberger 3152147162daSJoe Hershberger Make the verbose messages from UBIFS stop printing. This leaves 3153147162daSJoe Hershberger warnings and errors enabled. 3154147162daSJoe Hershberger 31556a11cf48SDaniel Schwierzeck- SPL framework 31566a11cf48SDaniel Schwierzeck CONFIG_SPL 31576a11cf48SDaniel Schwierzeck Enable building of SPL globally. 31586a11cf48SDaniel Schwierzeck 315995579793STom Rini CONFIG_SPL_LDSCRIPT 316095579793STom Rini LDSCRIPT for linking the SPL binary. 316195579793STom Rini 31626ebc3461SAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT 31636ebc3461SAlbert ARIBAUD Maximum size in memory allocated to the SPL, BSS included. 31646ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual memory 31656ebc3461SAlbert ARIBAUD used by SPL from _start to __bss_end does not exceed it. 31668960af8bSAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE 31676ebc3461SAlbert ARIBAUD must not be both defined at the same time. 31686ebc3461SAlbert ARIBAUD 316995579793STom Rini CONFIG_SPL_MAX_SIZE 31706ebc3461SAlbert ARIBAUD Maximum size of the SPL image (text, data, rodata, and 31716ebc3461SAlbert ARIBAUD linker lists sections), BSS excluded. 31726ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual size does 31736ebc3461SAlbert ARIBAUD not exceed it. 317495579793STom Rini 31756a11cf48SDaniel Schwierzeck CONFIG_SPL_TEXT_BASE 31766a11cf48SDaniel Schwierzeck TEXT_BASE for linking the SPL binary. 31776a11cf48SDaniel Schwierzeck 317894a45bb1SScott Wood CONFIG_SPL_RELOC_TEXT_BASE 317994a45bb1SScott Wood Address to relocate to. If unspecified, this is equal to 318094a45bb1SScott Wood CONFIG_SPL_TEXT_BASE (i.e. no relocation is done). 318194a45bb1SScott Wood 318295579793STom Rini CONFIG_SPL_BSS_START_ADDR 318395579793STom Rini Link address for the BSS within the SPL binary. 318495579793STom Rini 318595579793STom Rini CONFIG_SPL_BSS_MAX_SIZE 31866ebc3461SAlbert ARIBAUD Maximum size in memory allocated to the SPL BSS. 31876ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual memory used 31886ebc3461SAlbert ARIBAUD by SPL from __bss_start to __bss_end does not exceed it. 31898960af8bSAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE 31906ebc3461SAlbert ARIBAUD must not be both defined at the same time. 319195579793STom Rini 319295579793STom Rini CONFIG_SPL_STACK 319395579793STom Rini Adress of the start of the stack SPL will use 319495579793STom Rini 319594a45bb1SScott Wood CONFIG_SPL_RELOC_STACK 319694a45bb1SScott Wood Adress of the start of the stack SPL will use after 319794a45bb1SScott Wood relocation. If unspecified, this is equal to 319894a45bb1SScott Wood CONFIG_SPL_STACK. 319994a45bb1SScott Wood 320095579793STom Rini CONFIG_SYS_SPL_MALLOC_START 320195579793STom Rini Starting address of the malloc pool used in SPL. 320295579793STom Rini 320395579793STom Rini CONFIG_SYS_SPL_MALLOC_SIZE 320495579793STom Rini The size of the malloc pool used in SPL. 32056a11cf48SDaniel Schwierzeck 320647f7bcaeSTom Rini CONFIG_SPL_FRAMEWORK 320747f7bcaeSTom Rini Enable the SPL framework under common/. This framework 320847f7bcaeSTom Rini supports MMC, NAND and YMODEM loading of U-Boot and NAND 320947f7bcaeSTom Rini NAND loading of the Linux Kernel. 321047f7bcaeSTom Rini 3211861a86f4STom Rini CONFIG_SPL_DISPLAY_PRINT 3212861a86f4STom Rini For ARM, enable an optional function to print more information 3213861a86f4STom Rini about the running system. 3214861a86f4STom Rini 32154b919725SScott Wood CONFIG_SPL_INIT_MINIMAL 32164b919725SScott Wood Arch init code should be built for a very small image 32174b919725SScott Wood 32186a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBCOMMON_SUPPORT 32196a11cf48SDaniel Schwierzeck Support for common/libcommon.o in SPL binary 32206a11cf48SDaniel Schwierzeck 32216a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBDISK_SUPPORT 32226a11cf48SDaniel Schwierzeck Support for disk/libdisk.o in SPL binary 32236a11cf48SDaniel Schwierzeck 32246a11cf48SDaniel Schwierzeck CONFIG_SPL_I2C_SUPPORT 32256a11cf48SDaniel Schwierzeck Support for drivers/i2c/libi2c.o in SPL binary 32266a11cf48SDaniel Schwierzeck 32276a11cf48SDaniel Schwierzeck CONFIG_SPL_GPIO_SUPPORT 32286a11cf48SDaniel Schwierzeck Support for drivers/gpio/libgpio.o in SPL binary 32296a11cf48SDaniel Schwierzeck 32306a11cf48SDaniel Schwierzeck CONFIG_SPL_MMC_SUPPORT 32316a11cf48SDaniel Schwierzeck Support for drivers/mmc/libmmc.o in SPL binary 32326a11cf48SDaniel Schwierzeck 323395579793STom Rini CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR, 323495579793STom Rini CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS, 323595579793STom Rini CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION 323695579793STom Rini Address, size and partition on the MMC to load U-Boot from 323795579793STom Rini when the MMC is being used in raw mode. 323895579793STom Rini 32392b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 32402b75b0adSPeter Korsgaard Sector to load kernel uImage from when MMC is being 32412b75b0adSPeter Korsgaard used in raw mode (for Falcon mode) 32422b75b0adSPeter Korsgaard 32432b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR, 32442b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS 32452b75b0adSPeter Korsgaard Sector and number of sectors to load kernel argument 32462b75b0adSPeter Korsgaard parameters from when MMC is being used in raw mode 32472b75b0adSPeter Korsgaard (for falcon mode) 32482b75b0adSPeter Korsgaard 324995579793STom Rini CONFIG_SPL_FAT_SUPPORT 325095579793STom Rini Support for fs/fat/libfat.o in SPL binary 325195579793STom Rini 325295579793STom Rini CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME 325395579793STom Rini Filename to read to load U-Boot when reading from FAT 325495579793STom Rini 32557ad2cc79SPeter Korsgaard CONFIG_SPL_FAT_LOAD_KERNEL_NAME 32567ad2cc79SPeter Korsgaard Filename to read to load kernel uImage when reading 32577ad2cc79SPeter Korsgaard from FAT (for Falcon mode) 32587ad2cc79SPeter Korsgaard 32597ad2cc79SPeter Korsgaard CONFIG_SPL_FAT_LOAD_ARGS_NAME 32607ad2cc79SPeter Korsgaard Filename to read to load kernel argument parameters 32617ad2cc79SPeter Korsgaard when reading from FAT (for Falcon mode) 32627ad2cc79SPeter Korsgaard 326306f60ae3SScott Wood CONFIG_SPL_MPC83XX_WAIT_FOR_NAND 326406f60ae3SScott Wood Set this for NAND SPL on PPC mpc83xx targets, so that 326506f60ae3SScott Wood start.S waits for the rest of the SPL to load before 326606f60ae3SScott Wood continuing (the hardware starts execution after just 326706f60ae3SScott Wood loading the first page rather than the full 4K). 326806f60ae3SScott Wood 32696f2f01b9SScott Wood CONFIG_SPL_NAND_BASE 32706f2f01b9SScott Wood Include nand_base.c in the SPL. Requires 32716f2f01b9SScott Wood CONFIG_SPL_NAND_DRIVERS. 32726f2f01b9SScott Wood 32736f2f01b9SScott Wood CONFIG_SPL_NAND_DRIVERS 32746f2f01b9SScott Wood SPL uses normal NAND drivers, not minimal drivers. 32756f2f01b9SScott Wood 32766f2f01b9SScott Wood CONFIG_SPL_NAND_ECC 32776f2f01b9SScott Wood Include standard software ECC in the SPL 32786f2f01b9SScott Wood 327995579793STom Rini CONFIG_SPL_NAND_SIMPLE 32807d4b7955SScott Wood Support for NAND boot using simple NAND drivers that 32817d4b7955SScott Wood expose the cmd_ctrl() interface. 328295579793STom Rini 3283bb0dc108SYing Zhang CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT 3284bb0dc108SYing Zhang Set for the SPL on PPC mpc8xxx targets, support for 32855614e71bSYork Sun drivers/ddr/fsl/libddr.o in SPL binary. 3286bb0dc108SYing Zhang 32877c8eea59SYing Zhang CONFIG_SPL_COMMON_INIT_DDR 32887c8eea59SYing Zhang Set for common ddr init with serial presence detect in 32897c8eea59SYing Zhang SPL binary. 32907c8eea59SYing Zhang 329195579793STom Rini CONFIG_SYS_NAND_5_ADDR_CYCLE, CONFIG_SYS_NAND_PAGE_COUNT, 329295579793STom Rini CONFIG_SYS_NAND_PAGE_SIZE, CONFIG_SYS_NAND_OOBSIZE, 329395579793STom Rini CONFIG_SYS_NAND_BLOCK_SIZE, CONFIG_SYS_NAND_BAD_BLOCK_POS, 329495579793STom Rini CONFIG_SYS_NAND_ECCPOS, CONFIG_SYS_NAND_ECCSIZE, 329595579793STom Rini CONFIG_SYS_NAND_ECCBYTES 329695579793STom Rini Defines the size and behavior of the NAND that SPL uses 32977d4b7955SScott Wood to read U-Boot 329895579793STom Rini 3299fbe76ae4SPrabhakar Kushwaha CONFIG_SPL_NAND_BOOT 3300fbe76ae4SPrabhakar Kushwaha Add support NAND boot 3301fbe76ae4SPrabhakar Kushwaha 330295579793STom Rini CONFIG_SYS_NAND_U_BOOT_OFFS 33037d4b7955SScott Wood Location in NAND to read U-Boot from 33047d4b7955SScott Wood 33057d4b7955SScott Wood CONFIG_SYS_NAND_U_BOOT_DST 33067d4b7955SScott Wood Location in memory to load U-Boot to 33077d4b7955SScott Wood 33087d4b7955SScott Wood CONFIG_SYS_NAND_U_BOOT_SIZE 33097d4b7955SScott Wood Size of image to load 331095579793STom Rini 331195579793STom Rini CONFIG_SYS_NAND_U_BOOT_START 33127d4b7955SScott Wood Entry point in loaded image to jump to 331395579793STom Rini 331495579793STom Rini CONFIG_SYS_NAND_HW_ECC_OOBFIRST 331595579793STom Rini Define this if you need to first read the OOB and then the 331695579793STom Rini data. This is used for example on davinci plattforms. 331795579793STom Rini 331895579793STom Rini CONFIG_SPL_OMAP3_ID_NAND 331995579793STom Rini Support for an OMAP3-specific set of functions to return the 332095579793STom Rini ID and MFR of the first attached NAND chip, if present. 332195579793STom Rini 33226a11cf48SDaniel Schwierzeck CONFIG_SPL_SERIAL_SUPPORT 33236a11cf48SDaniel Schwierzeck Support for drivers/serial/libserial.o in SPL binary 33246a11cf48SDaniel Schwierzeck 33256a11cf48SDaniel Schwierzeck CONFIG_SPL_SPI_FLASH_SUPPORT 33266a11cf48SDaniel Schwierzeck Support for drivers/mtd/spi/libspi_flash.o in SPL binary 33276a11cf48SDaniel Schwierzeck 33286a11cf48SDaniel Schwierzeck CONFIG_SPL_SPI_SUPPORT 33296a11cf48SDaniel Schwierzeck Support for drivers/spi/libspi.o in SPL binary 33306a11cf48SDaniel Schwierzeck 3331c57b953dSPavel Machek CONFIG_SPL_RAM_DEVICE 3332c57b953dSPavel Machek Support for running image already present in ram, in SPL binary 3333c57b953dSPavel Machek 33346a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBGENERIC_SUPPORT 33356a11cf48SDaniel Schwierzeck Support for lib/libgeneric.o in SPL binary 33361372cce2SMarian Balakowicz 3337ba1bee43SYing Zhang CONFIG_SPL_ENV_SUPPORT 3338ba1bee43SYing Zhang Support for the environment operating in SPL binary 3339ba1bee43SYing Zhang 3340ba1bee43SYing Zhang CONFIG_SPL_NET_SUPPORT 3341ba1bee43SYing Zhang Support for the net/libnet.o in SPL binary. 3342ba1bee43SYing Zhang It conflicts with SPL env from storage medium specified by 3343ba1bee43SYing Zhang CONFIG_ENV_IS_xxx but CONFIG_ENV_IS_NOWHERE 3344ba1bee43SYing Zhang 334574752baaSScott Wood CONFIG_SPL_PAD_TO 33466113d3f2SBenoît Thébaudeau Image offset to which the SPL should be padded before appending 33476113d3f2SBenoît Thébaudeau the SPL payload. By default, this is defined as 33486113d3f2SBenoît Thébaudeau CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined. 33496113d3f2SBenoît Thébaudeau CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL 33506113d3f2SBenoît Thébaudeau payload without any padding, or >= CONFIG_SPL_MAX_SIZE. 335174752baaSScott Wood 3352ca2fca22SScott Wood CONFIG_SPL_TARGET 3353ca2fca22SScott Wood Final target image containing SPL and payload. Some SPLs 3354ca2fca22SScott Wood use an arch-specific makefile fragment instead, for 3355ca2fca22SScott Wood example if more than one image needs to be produced. 3356ca2fca22SScott Wood 335787ebee39SSimon Glass CONFIG_FIT_SPL_PRINT 335887ebee39SSimon Glass Printing information about a FIT image adds quite a bit of 335987ebee39SSimon Glass code to SPL. So this is normally disabled in SPL. Use this 336087ebee39SSimon Glass option to re-enable it. This will affect the output of the 336187ebee39SSimon Glass bootm command when booting a FIT image. 336287ebee39SSimon Glass 33633aa29de0SYing Zhang- TPL framework 33643aa29de0SYing Zhang CONFIG_TPL 33653aa29de0SYing Zhang Enable building of TPL globally. 33663aa29de0SYing Zhang 33673aa29de0SYing Zhang CONFIG_TPL_PAD_TO 33683aa29de0SYing Zhang Image offset to which the TPL should be padded before appending 33693aa29de0SYing Zhang the TPL payload. By default, this is defined as 33703aa29de0SYing Zhang CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined. 33713aa29de0SYing Zhang CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL 33723aa29de0SYing Zhang payload without any padding, or >= CONFIG_SPL_MAX_SIZE. 33733aa29de0SYing Zhang 3374c609719bSwdenkModem Support: 3375c609719bSwdenk-------------- 3376c609719bSwdenk 3377566e5cf4SWolfgang Denk[so far only for SMDK2400 boards] 3378c609719bSwdenk 337911ccc33fSMarcel Ziswiler- Modem support enable: 3380c609719bSwdenk CONFIG_MODEM_SUPPORT 3381c609719bSwdenk 3382c609719bSwdenk- RTS/CTS Flow control enable: 3383c609719bSwdenk CONFIG_HWFLOW 3384c609719bSwdenk 3385c609719bSwdenk- Modem debug support: 3386c609719bSwdenk CONFIG_MODEM_SUPPORT_DEBUG 3387c609719bSwdenk 3388c609719bSwdenk Enables debugging stuff (char screen[1024], dbg()) 3389c609719bSwdenk for modem support. Useful only with BDI2000. 3390c609719bSwdenk 3391a8c7c708Swdenk- Interrupt support (PPC): 3392a8c7c708Swdenk 3393a8c7c708Swdenk There are common interrupt_init() and timer_interrupt() 3394a8c7c708Swdenk for all PPC archs. interrupt_init() calls interrupt_init_cpu() 339511ccc33fSMarcel Ziswiler for CPU specific initialization. interrupt_init_cpu() 3396a8c7c708Swdenk should set decrementer_count to appropriate value. If 339711ccc33fSMarcel Ziswiler CPU resets decrementer automatically after interrupt 3398a8c7c708Swdenk (ppc4xx) it should set decrementer_count to zero. 339911ccc33fSMarcel Ziswiler timer_interrupt() calls timer_interrupt_cpu() for CPU 3400a8c7c708Swdenk specific handling. If board has watchdog / status_led 3401a8c7c708Swdenk / other_activity_monitor it works automatically from 3402a8c7c708Swdenk general timer_interrupt(). 3403a8c7c708Swdenk 3404c609719bSwdenk- General: 3405c609719bSwdenk 3406c609719bSwdenk In the target system modem support is enabled when a 3407c609719bSwdenk specific key (key combination) is pressed during 3408c609719bSwdenk power-on. Otherwise U-Boot will boot normally 340911ccc33fSMarcel Ziswiler (autoboot). The key_pressed() function is called from 3410c609719bSwdenk board_init(). Currently key_pressed() is a dummy 3411c609719bSwdenk function, returning 1 and thus enabling modem 3412c609719bSwdenk initialization. 3413c609719bSwdenk 3414c609719bSwdenk If there are no modem init strings in the 3415c609719bSwdenk environment, U-Boot proceed to autoboot; the 3416c609719bSwdenk previous output (banner, info printfs) will be 341711ccc33fSMarcel Ziswiler suppressed, though. 3418c609719bSwdenk 3419c609719bSwdenk See also: doc/README.Modem 3420c609719bSwdenk 34219660e442SHelmut RaigerBoard initialization settings: 34229660e442SHelmut Raiger------------------------------ 34239660e442SHelmut Raiger 34249660e442SHelmut RaigerDuring Initialization u-boot calls a number of board specific functions 34259660e442SHelmut Raigerto allow the preparation of board specific prerequisites, e.g. pin setup 34269660e442SHelmut Raigerbefore drivers are initialized. To enable these callbacks the 34279660e442SHelmut Raigerfollowing configuration macros have to be defined. Currently this is 34289660e442SHelmut Raigerarchitecture specific, so please check arch/your_architecture/lib/board.c 34299660e442SHelmut Raigertypically in board_init_f() and board_init_r(). 34309660e442SHelmut Raiger 34319660e442SHelmut Raiger- CONFIG_BOARD_EARLY_INIT_F: Call board_early_init_f() 34329660e442SHelmut Raiger- CONFIG_BOARD_EARLY_INIT_R: Call board_early_init_r() 34339660e442SHelmut Raiger- CONFIG_BOARD_LATE_INIT: Call board_late_init() 34349660e442SHelmut Raiger- CONFIG_BOARD_POSTCLK_INIT: Call board_postclk_init() 3435c609719bSwdenk 3436c609719bSwdenkConfiguration Settings: 3437c609719bSwdenk----------------------- 3438c609719bSwdenk 34396d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_LONGHELP: Defined when you want long help messages included; 3440c609719bSwdenk undefine this when you're short of memory. 3441c609719bSwdenk 34422fb2604dSPeter Tyser- CONFIG_SYS_HELP_CMD_WIDTH: Defined when you want to override the default 34432fb2604dSPeter Tyser width of the commands listed in the 'help' command output. 34442fb2604dSPeter Tyser 34456d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PROMPT: This is what U-Boot prints on the console to 3446c609719bSwdenk prompt for user input. 3447c609719bSwdenk 34486d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CBSIZE: Buffer size for input from the Console 3449c609719bSwdenk 34506d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PBSIZE: Buffer size for Console output 3451c609719bSwdenk 34526d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAXARGS: max. Number of arguments accepted for monitor commands 3453c609719bSwdenk 34546d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BARGSIZE: Buffer size for Boot Arguments which are passed to 3455c609719bSwdenk the application (usually a Linux kernel) when it is 3456c609719bSwdenk booted 3457c609719bSwdenk 34586d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BAUDRATE_TABLE: 3459c609719bSwdenk List of legal baudrate settings for this board. 3460c609719bSwdenk 34616d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_INFO_QUIET 3462c609719bSwdenk Suppress display of console information at boot. 3463c609719bSwdenk 34646d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_IS_IN_ENV 3465c609719bSwdenk If the board specific function 3466c609719bSwdenk extern int overwrite_console (void); 3467c609719bSwdenk returns 1, the stdin, stderr and stdout are switched to the 3468c609719bSwdenk serial port, else the settings in the environment are used. 3469c609719bSwdenk 34706d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE 3471c609719bSwdenk Enable the call to overwrite_console(). 3472c609719bSwdenk 34736d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_ENV_OVERWRITE 3474c609719bSwdenk Enable overwrite of previous console environment settings. 3475c609719bSwdenk 34766d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEMTEST_START, CONFIG_SYS_MEMTEST_END: 3477c609719bSwdenk Begin and End addresses of the area used by the 3478c609719bSwdenk simple memory test. 3479c609719bSwdenk 34806d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_ALT_MEMTEST: 3481c609719bSwdenk Enable an alternate, more extensive memory test. 3482c609719bSwdenk 34836d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEMTEST_SCRATCH: 34845f535fe1Swdenk Scratch address used by the alternate memory test 34855f535fe1Swdenk You only need to set this if address zero isn't writeable 34865f535fe1Swdenk 34876d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEM_TOP_HIDE (PPC only): 34886d0f6bcfSJean-Christophe PLAGNIOL-VILLARD If CONFIG_SYS_MEM_TOP_HIDE is defined in the board config header, 348914f73ca6SStefan Roese this specified memory area will get subtracted from the top 349011ccc33fSMarcel Ziswiler (end) of RAM and won't get "touched" at all by U-Boot. By 349114f73ca6SStefan Roese fixing up gd->ram_size the Linux kernel should gets passed 349214f73ca6SStefan Roese the now "corrected" memory size and won't touch it either. 349314f73ca6SStefan Roese This should work for arch/ppc and arch/powerpc. Only Linux 34945e12e75dSStefan Roese board ports in arch/powerpc with bootwrapper support that 349514f73ca6SStefan Roese recalculate the memory size from the SDRAM controller setup 34965e12e75dSStefan Roese will have to get fixed in Linux additionally. 349714f73ca6SStefan Roese 349814f73ca6SStefan Roese This option can be used as a workaround for the 440EPx/GRx 349914f73ca6SStefan Roese CHIP 11 errata where the last 256 bytes in SDRAM shouldn't 350014f73ca6SStefan Roese be touched. 350114f73ca6SStefan Roese 350214f73ca6SStefan Roese WARNING: Please make sure that this value is a multiple of 350314f73ca6SStefan Roese the Linux page size (normally 4k). If this is not the case, 350414f73ca6SStefan Roese then the end address of the Linux memory will be located at a 350514f73ca6SStefan Roese non page size aligned address and this could cause major 350614f73ca6SStefan Roese problems. 350714f73ca6SStefan Roese 35086d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_LOADS_BAUD_CHANGE: 3509c609719bSwdenk Enable temporary baudrate change while serial download 3510c609719bSwdenk 35116d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SDRAM_BASE: 3512c609719bSwdenk Physical start address of SDRAM. _Must_ be 0 here. 3513c609719bSwdenk 35146d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MBIO_BASE: 3515c609719bSwdenk Physical start address of Motherboard I/O (if using a 3516c609719bSwdenk Cogent motherboard) 3517c609719bSwdenk 35186d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_BASE: 3519c609719bSwdenk Physical start address of Flash memory. 3520c609719bSwdenk 35216d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MONITOR_BASE: 3522c609719bSwdenk Physical start address of boot monitor code (set by 3523c609719bSwdenk make config files to be same as the text base address 352414d0a02aSWolfgang Denk (CONFIG_SYS_TEXT_BASE) used when linking) - same as 35256d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FLASH_BASE when booting from flash. 3526c609719bSwdenk 35276d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MONITOR_LEN: 35283b57fe0aSwdenk Size of memory reserved for monitor code, used to 35293b57fe0aSwdenk determine _at_compile_time_ (!) if the environment is 35303b57fe0aSwdenk embedded within the U-Boot image, or in a separate 35313b57fe0aSwdenk flash sector. 3532c609719bSwdenk 35336d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MALLOC_LEN: 3534c609719bSwdenk Size of DRAM reserved for malloc() use. 3535c609719bSwdenk 35366d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BOOTM_LEN: 353715940c9aSStefan Roese Normally compressed uImages are limited to an 353815940c9aSStefan Roese uncompressed size of 8 MBytes. If this is not enough, 35396d0f6bcfSJean-Christophe PLAGNIOL-VILLARD you can define CONFIG_SYS_BOOTM_LEN in your board config file 354015940c9aSStefan Roese to adjust this setting to your needs. 3541c609719bSwdenk 35426d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BOOTMAPSZ: 3543c609719bSwdenk Maximum size of memory mapped by the startup code of 3544c609719bSwdenk the Linux kernel; all data that must be processed by 35457d721e34SBartlomiej Sieka the Linux kernel (bd_info, boot arguments, FDT blob if 35467d721e34SBartlomiej Sieka used) must be put below this limit, unless "bootm_low" 35471bce2aebSRobert P. J. Day environment variable is defined and non-zero. In such case 35487d721e34SBartlomiej Sieka all data for the Linux kernel must be between "bootm_low" 3549c3624e6eSGrant Likely and "bootm_low" + CONFIG_SYS_BOOTMAPSZ. The environment 3550c3624e6eSGrant Likely variable "bootm_mapsize" will override the value of 3551c3624e6eSGrant Likely CONFIG_SYS_BOOTMAPSZ. If CONFIG_SYS_BOOTMAPSZ is undefined, 3552c3624e6eSGrant Likely then the value in "bootm_size" will be used instead. 3553c609719bSwdenk 3554fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_RAMDISK_HIGH: 3555fca43cc8SJohn Rigby Enable initrd_high functionality. If defined then the 3556fca43cc8SJohn Rigby initrd_high feature is enabled and the bootm ramdisk subcommand 3557fca43cc8SJohn Rigby is enabled. 3558fca43cc8SJohn Rigby 3559fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_GET_CMDLINE: 3560fca43cc8SJohn Rigby Enables allocating and saving kernel cmdline in space between 3561fca43cc8SJohn Rigby "bootm_low" and "bootm_low" + BOOTMAPSZ. 3562fca43cc8SJohn Rigby 3563fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_GET_KBD: 3564fca43cc8SJohn Rigby Enables allocating and saving a kernel copy of the bd_info in 3565fca43cc8SJohn Rigby space between "bootm_low" and "bootm_low" + BOOTMAPSZ. 3566fca43cc8SJohn Rigby 35676d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAX_FLASH_BANKS: 3568c609719bSwdenk Max number of Flash memory banks 3569c609719bSwdenk 35706d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAX_FLASH_SECT: 3571c609719bSwdenk Max number of sectors on a Flash chip 3572c609719bSwdenk 35736d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_ERASE_TOUT: 3574c609719bSwdenk Timeout for Flash erase operations (in ms) 3575c609719bSwdenk 35766d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_WRITE_TOUT: 3577c609719bSwdenk Timeout for Flash write operations (in ms) 3578c609719bSwdenk 35796d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_LOCK_TOUT 35808564acf9Swdenk Timeout for Flash set sector lock bit operation (in ms) 35818564acf9Swdenk 35826d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_UNLOCK_TOUT 35838564acf9Swdenk Timeout for Flash clear lock bits operation (in ms) 35848564acf9Swdenk 35856d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_PROTECTION 35868564acf9Swdenk If defined, hardware flash sectors protection is used 35878564acf9Swdenk instead of U-Boot software protection. 35888564acf9Swdenk 35896d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DIRECT_FLASH_TFTP: 3590c609719bSwdenk 3591c609719bSwdenk Enable TFTP transfers directly to flash memory; 3592c609719bSwdenk without this option such a download has to be 3593c609719bSwdenk performed in two steps: (1) download to RAM, and (2) 3594c609719bSwdenk copy from RAM to flash. 3595c609719bSwdenk 3596c609719bSwdenk The two-step approach is usually more reliable, since 3597c609719bSwdenk you can check if the download worked before you erase 359811ccc33fSMarcel Ziswiler the flash, but in some situations (when system RAM is 359911ccc33fSMarcel Ziswiler too limited to allow for a temporary copy of the 3600c609719bSwdenk downloaded image) this option may be very useful. 3601c609719bSwdenk 36026d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_CFI: 3603c609719bSwdenk Define if the flash driver uses extra elements in the 36045653fc33Swdenk common flash structure for storing flash geometry. 36055653fc33Swdenk 360600b1883aSJean-Christophe PLAGNIOL-VILLARD- CONFIG_FLASH_CFI_DRIVER 36075653fc33Swdenk This option also enables the building of the cfi_flash driver 36085653fc33Swdenk in the drivers directory 360953cf9435Sstroese 361091809ed5SPiotr Ziecik- CONFIG_FLASH_CFI_MTD 361191809ed5SPiotr Ziecik This option enables the building of the cfi_mtd driver 361291809ed5SPiotr Ziecik in the drivers directory. The driver exports CFI flash 361391809ed5SPiotr Ziecik to the MTD layer. 361491809ed5SPiotr Ziecik 36156d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_USE_BUFFER_WRITE 361696ef831fSGuennadi Liakhovetski Use buffered writes to flash. 361796ef831fSGuennadi Liakhovetski 361896ef831fSGuennadi Liakhovetski- CONFIG_FLASH_SPANSION_S29WS_N 361996ef831fSGuennadi Liakhovetski s29ws-n MirrorBit flash has non-standard addresses for buffered 362096ef831fSGuennadi Liakhovetski write commands. 362196ef831fSGuennadi Liakhovetski 36226d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_QUIET_TEST 36235568e613SStefan Roese If this option is defined, the common CFI flash doesn't 36245568e613SStefan Roese print it's warning upon not recognized FLASH banks. This 36255568e613SStefan Roese is useful, if some of the configured banks are only 36265568e613SStefan Roese optionally available. 36275568e613SStefan Roese 36289a042e9cSJerry Van Baren- CONFIG_FLASH_SHOW_PROGRESS 36299a042e9cSJerry Van Baren If defined (must be an integer), print out countdown 36309a042e9cSJerry Van Baren digits and dots. Recommended value: 45 (9..1) for 80 36319a042e9cSJerry Van Baren column displays, 15 (3..1) for 40 column displays. 36329a042e9cSJerry Van Baren 3633352ef3f1SStefan Roese- CONFIG_FLASH_VERIFY 3634352ef3f1SStefan Roese If defined, the content of the flash (destination) is compared 3635352ef3f1SStefan Roese against the source after the write operation. An error message 3636352ef3f1SStefan Roese will be printed when the contents are not identical. 3637352ef3f1SStefan Roese Please note that this option is useless in nearly all cases, 3638352ef3f1SStefan Roese since such flash programming errors usually are detected earlier 3639352ef3f1SStefan Roese while unprotecting/erasing/programming. Please only enable 3640352ef3f1SStefan Roese this option if you really know what you are doing. 3641352ef3f1SStefan Roese 36426d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_RX_ETH_BUFFER: 364311ccc33fSMarcel Ziswiler Defines the number of Ethernet receive buffers. On some 364411ccc33fSMarcel Ziswiler Ethernet controllers it is recommended to set this value 364553cf9435Sstroese to 8 or even higher (EEPRO100 or 405 EMAC), since all 364653cf9435Sstroese buffers can be full shortly after enabling the interface 364711ccc33fSMarcel Ziswiler on high Ethernet traffic. 364853cf9435Sstroese Defaults to 4 if not defined. 3649c609719bSwdenk 3650ea882bafSWolfgang Denk- CONFIG_ENV_MAX_ENTRIES 3651ea882bafSWolfgang Denk 3652ea882bafSWolfgang Denk Maximum number of entries in the hash table that is used 3653ea882bafSWolfgang Denk internally to store the environment settings. The default 3654ea882bafSWolfgang Denk setting is supposed to be generous and should work in most 3655ea882bafSWolfgang Denk cases. This setting can be used to tune behaviour; see 3656ea882bafSWolfgang Denk lib/hashtable.c for details. 3657ea882bafSWolfgang Denk 36582598090bSJoe Hershberger- CONFIG_ENV_FLAGS_LIST_DEFAULT 36592598090bSJoe Hershberger- CONFIG_ENV_FLAGS_LIST_STATIC 36601bce2aebSRobert P. J. Day Enable validation of the values given to environment variables when 36612598090bSJoe Hershberger calling env set. Variables can be restricted to only decimal, 36622598090bSJoe Hershberger hexadecimal, or boolean. If CONFIG_CMD_NET is also defined, 36632598090bSJoe Hershberger the variables can also be restricted to IP address or MAC address. 36642598090bSJoe Hershberger 36652598090bSJoe Hershberger The format of the list is: 36662598090bSJoe Hershberger type_attribute = [s|d|x|b|i|m] 3667267541f7SJoe Hershberger access_atribute = [a|r|o|c] 3668267541f7SJoe Hershberger attributes = type_attribute[access_atribute] 36692598090bSJoe Hershberger entry = variable_name[:attributes] 36702598090bSJoe Hershberger list = entry[,list] 36712598090bSJoe Hershberger 36722598090bSJoe Hershberger The type attributes are: 36732598090bSJoe Hershberger s - String (default) 36742598090bSJoe Hershberger d - Decimal 36752598090bSJoe Hershberger x - Hexadecimal 36762598090bSJoe Hershberger b - Boolean ([1yYtT|0nNfF]) 36772598090bSJoe Hershberger i - IP address 36782598090bSJoe Hershberger m - MAC address 36792598090bSJoe Hershberger 3680267541f7SJoe Hershberger The access attributes are: 3681267541f7SJoe Hershberger a - Any (default) 3682267541f7SJoe Hershberger r - Read-only 3683267541f7SJoe Hershberger o - Write-once 3684267541f7SJoe Hershberger c - Change-default 3685267541f7SJoe Hershberger 36862598090bSJoe Hershberger - CONFIG_ENV_FLAGS_LIST_DEFAULT 36872598090bSJoe Hershberger Define this to a list (string) to define the ".flags" 36882598090bSJoe Hershberger envirnoment variable in the default or embedded environment. 36892598090bSJoe Hershberger 36902598090bSJoe Hershberger - CONFIG_ENV_FLAGS_LIST_STATIC 36912598090bSJoe Hershberger Define this to a list (string) to define validation that 36922598090bSJoe Hershberger should be done if an entry is not found in the ".flags" 36932598090bSJoe Hershberger environment variable. To override a setting in the static 36942598090bSJoe Hershberger list, simply add an entry for the same variable name to the 36952598090bSJoe Hershberger ".flags" variable. 36962598090bSJoe Hershberger 3697267541f7SJoe Hershberger- CONFIG_ENV_ACCESS_IGNORE_FORCE 3698267541f7SJoe Hershberger If defined, don't allow the -f switch to env set override variable 3699267541f7SJoe Hershberger access flags. 3700267541f7SJoe Hershberger 37015c1a7ea6SSimon Glass- CONFIG_SYS_GENERIC_BOARD 37025c1a7ea6SSimon Glass This selects the architecture-generic board system instead of the 37035c1a7ea6SSimon Glass architecture-specific board files. It is intended to move boards 37045c1a7ea6SSimon Glass to this new framework over time. Defining this will disable the 37055c1a7ea6SSimon Glass arch/foo/lib/board.c file and use common/board_f.c and 37065c1a7ea6SSimon Glass common/board_r.c instead. To use this option your architecture 37075c1a7ea6SSimon Glass must support it (i.e. must define __HAVE_ARCH_GENERIC_BOARD in 37085c1a7ea6SSimon Glass its config.mk file). If you find problems enabling this option on 37095c1a7ea6SSimon Glass your board please report the problem and send patches! 37105c1a7ea6SSimon Glass 3711632efa74SSimon Glass- CONFIG_SYS_SYM_OFFSETS 3712632efa74SSimon Glass This is set by architectures that use offsets for link symbols 3713632efa74SSimon Glass instead of absolute values. So bss_start is obtained using an 3714632efa74SSimon Glass offset _bss_start_ofs from CONFIG_SYS_TEXT_BASE, rather than 3715632efa74SSimon Glass directly. You should not need to touch this setting. 3716632efa74SSimon Glass 37170b1b60c7SLokesh Vutla- CONFIG_OMAP_PLATFORM_RESET_TIME_MAX_USEC (OMAP only) 37180b1b60c7SLokesh Vutla This is set by OMAP boards for the max time that reset should 37190b1b60c7SLokesh Vutla be asserted. See doc/README.omap-reset-time for details on how 37200b1b60c7SLokesh Vutla the value can be calulated on a given board. 3721632efa74SSimon Glass 3722c609719bSwdenkThe following definitions that deal with the placement and management 3723c609719bSwdenkof environment data (variable area); in general, we support the 3724c609719bSwdenkfollowing configurations: 3725c609719bSwdenk 3726c3eb3fe4SMike Frysinger- CONFIG_BUILD_ENVCRC: 3727c3eb3fe4SMike Frysinger 3728c3eb3fe4SMike Frysinger Builds up envcrc with the target environment so that external utils 3729c3eb3fe4SMike Frysinger may easily extract it and embed it in final U-Boot images. 3730c3eb3fe4SMike Frysinger 37315a1aceb0SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_FLASH: 3732c609719bSwdenk 3733c609719bSwdenk Define this if the environment is in flash memory. 3734c609719bSwdenk 3735c609719bSwdenk a) The environment occupies one whole flash sector, which is 3736c609719bSwdenk "embedded" in the text segment with the U-Boot code. This 3737c609719bSwdenk happens usually with "bottom boot sector" or "top boot 3738c609719bSwdenk sector" type flash chips, which have several smaller 3739c609719bSwdenk sectors at the start or the end. For instance, such a 3740c609719bSwdenk layout can have sector sizes of 8, 2x4, 16, Nx32 kB. In 3741c609719bSwdenk such a case you would place the environment in one of the 3742c609719bSwdenk 4 kB sectors - with U-Boot code before and after it. With 3743c609719bSwdenk "top boot sector" type flash chips, you would put the 3744c609719bSwdenk environment in one of the last sectors, leaving a gap 3745c609719bSwdenk between U-Boot and the environment. 3746c609719bSwdenk 37470e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 3748c609719bSwdenk 3749c609719bSwdenk Offset of environment data (variable area) to the 3750c609719bSwdenk beginning of flash memory; for instance, with bottom boot 3751c609719bSwdenk type flash chips the second sector can be used: the offset 3752c609719bSwdenk for this sector is given here. 3753c609719bSwdenk 37546d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_OFFSET is used relative to CONFIG_SYS_FLASH_BASE. 3755c609719bSwdenk 37560e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 3757c609719bSwdenk 3758c609719bSwdenk This is just another way to specify the start address of 3759c609719bSwdenk the flash sector containing the environment (instead of 37600e8d1586SJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_OFFSET). 3761c609719bSwdenk 37620e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SECT_SIZE: 3763c609719bSwdenk 3764c609719bSwdenk Size of the sector containing the environment. 3765c609719bSwdenk 3766c609719bSwdenk 3767c609719bSwdenk b) Sometimes flash chips have few, equal sized, BIG sectors. 3768c609719bSwdenk In such a case you don't want to spend a whole sector for 3769c609719bSwdenk the environment. 3770c609719bSwdenk 37710e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 3772c609719bSwdenk 37735a1aceb0SJean-Christophe PLAGNIOL-VILLARD If you use this in combination with CONFIG_ENV_IS_IN_FLASH 37740e8d1586SJean-Christophe PLAGNIOL-VILLARD and CONFIG_ENV_SECT_SIZE, you can specify to use only a part 3775c609719bSwdenk of this flash sector for the environment. This saves 3776c609719bSwdenk memory for the RAM copy of the environment. 3777c609719bSwdenk 3778c609719bSwdenk It may also save flash memory if you decide to use this 3779c609719bSwdenk when your environment is "embedded" within U-Boot code, 3780c609719bSwdenk since then the remainder of the flash sector could be used 3781c609719bSwdenk for U-Boot code. It should be pointed out that this is 3782c609719bSwdenk STRONGLY DISCOURAGED from a robustness point of view: 3783c609719bSwdenk updating the environment in flash makes it always 3784c609719bSwdenk necessary to erase the WHOLE sector. If something goes 3785c609719bSwdenk wrong before the contents has been restored from a copy in 3786c609719bSwdenk RAM, your target system will be dead. 3787c609719bSwdenk 37880e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR_REDUND 37890e8d1586SJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_SIZE_REDUND 3790c609719bSwdenk 3791c609719bSwdenk These settings describe a second storage area used to hold 379211ccc33fSMarcel Ziswiler a redundant copy of the environment data, so that there is 37933e38691eSwdenk a valid backup copy in case there is a power failure during 3794c609719bSwdenk a "saveenv" operation. 3795c609719bSwdenk 3796c609719bSwdenkBE CAREFUL! Any changes to the flash layout, and some changes to the 3797c609719bSwdenksource code will make it necessary to adapt <board>/u-boot.lds* 3798c609719bSwdenkaccordingly! 3799c609719bSwdenk 3800c609719bSwdenk 38019314cee6SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_NVRAM: 3802c609719bSwdenk 3803c609719bSwdenk Define this if you have some non-volatile memory device 3804c609719bSwdenk (NVRAM, battery buffered SRAM) which you want to use for the 3805c609719bSwdenk environment. 3806c609719bSwdenk 38070e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 38080e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 3809c609719bSwdenk 381011ccc33fSMarcel Ziswiler These two #defines are used to determine the memory area you 3811c609719bSwdenk want to use for environment. It is assumed that this memory 3812c609719bSwdenk can just be read and written to, without any special 3813c609719bSwdenk provision. 3814c609719bSwdenk 3815c609719bSwdenkBE CAREFUL! The first access to the environment happens quite early 3816c609719bSwdenkin U-Boot initalization (when we try to get the setting of for the 381711ccc33fSMarcel Ziswilerconsole baudrate). You *MUST* have mapped your NVRAM area then, or 3818c609719bSwdenkU-Boot will hang. 3819c609719bSwdenk 3820c609719bSwdenkPlease note that even with NVRAM we still use a copy of the 3821c609719bSwdenkenvironment in RAM: we could work on NVRAM directly, but we want to 3822c609719bSwdenkkeep settings there always unmodified except somebody uses "saveenv" 3823c609719bSwdenkto save the current settings. 3824c609719bSwdenk 3825c609719bSwdenk 3826bb1f8b4fSJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_EEPROM: 3827c609719bSwdenk 3828c609719bSwdenk Use this if you have an EEPROM or similar serial access 3829c609719bSwdenk device and a driver for it. 3830c609719bSwdenk 38310e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 38320e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 3833c609719bSwdenk 3834c609719bSwdenk These two #defines specify the offset and size of the 3835c609719bSwdenk environment area within the total memory of your EEPROM. 3836c609719bSwdenk 38376d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR: 3838c609719bSwdenk If defined, specified the chip address of the EEPROM device. 3839c609719bSwdenk The default address is zero. 3840c609719bSwdenk 38416d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_PAGE_WRITE_BITS: 3842c609719bSwdenk If defined, the number of bits used to address bytes in a 3843c609719bSwdenk single page in the EEPROM device. A 64 byte page, for example 3844c609719bSwdenk would require six bits. 3845c609719bSwdenk 38466d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS: 3847c609719bSwdenk If defined, the number of milliseconds to delay between 3848c609719bSwdenk page writes. The default is zero milliseconds. 3849c609719bSwdenk 38506d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR_LEN: 3851c609719bSwdenk The length in bytes of the EEPROM memory array address. Note 3852c609719bSwdenk that this is NOT the chip address length! 3853c609719bSwdenk 38546d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW: 38555cf91d6bSwdenk EEPROM chips that implement "address overflow" are ones 38565cf91d6bSwdenk like Catalyst 24WC04/08/16 which has 9/10/11 bits of 38575cf91d6bSwdenk address and the extra bits end up in the "chip address" bit 38585cf91d6bSwdenk slots. This makes a 24WC08 (1Kbyte) chip look like four 256 38595cf91d6bSwdenk byte chips. 38605cf91d6bSwdenk 38615cf91d6bSwdenk Note that we consider the length of the address field to 38625cf91d6bSwdenk still be one byte because the extra address bits are hidden 38635cf91d6bSwdenk in the chip address. 38645cf91d6bSwdenk 38656d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_SIZE: 3866c609719bSwdenk The size in bytes of the EEPROM device. 3867c609719bSwdenk 3868548738b4SHeiko Schocher - CONFIG_ENV_EEPROM_IS_ON_I2C 3869548738b4SHeiko Schocher define this, if you have I2C and SPI activated, and your 3870548738b4SHeiko Schocher EEPROM, which holds the environment, is on the I2C bus. 3871548738b4SHeiko Schocher 3872548738b4SHeiko Schocher - CONFIG_I2C_ENV_EEPROM_BUS 3873548738b4SHeiko Schocher if you have an Environment on an EEPROM reached over 3874548738b4SHeiko Schocher I2C muxes, you can define here, how to reach this 3875548738b4SHeiko Schocher EEPROM. For example: 3876548738b4SHeiko Schocher 3877ea818dbbSHeiko Schocher #define CONFIG_I2C_ENV_EEPROM_BUS 1 3878548738b4SHeiko Schocher 3879548738b4SHeiko Schocher EEPROM which holds the environment, is reached over 3880548738b4SHeiko Schocher a pca9547 i2c mux with address 0x70, channel 3. 3881c609719bSwdenk 3882057c849cSJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_DATAFLASH: 38835779d8d9Swdenk 38845779d8d9Swdenk Define this if you have a DataFlash memory device which you 38855779d8d9Swdenk want to use for the environment. 38865779d8d9Swdenk 38870e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 38880e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 38890e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 38905779d8d9Swdenk 38915779d8d9Swdenk These three #defines specify the offset and size of the 38925779d8d9Swdenk environment area within the total memory of your DataFlash placed 38935779d8d9Swdenk at the specified address. 38945779d8d9Swdenk 38950a85a9e7SLiu Gang- CONFIG_ENV_IS_IN_REMOTE: 38960a85a9e7SLiu Gang 38970a85a9e7SLiu Gang Define this if you have a remote memory space which you 38980a85a9e7SLiu Gang want to use for the local device's environment. 38990a85a9e7SLiu Gang 39000a85a9e7SLiu Gang - CONFIG_ENV_ADDR: 39010a85a9e7SLiu Gang - CONFIG_ENV_SIZE: 39020a85a9e7SLiu Gang 39030a85a9e7SLiu Gang These two #defines specify the address and size of the 39040a85a9e7SLiu Gang environment area within the remote memory space. The 39050a85a9e7SLiu Gang local device can get the environment from remote memory 3906fc54c7faSLiu Gang space by SRIO or PCIE links. 39070a85a9e7SLiu Gang 39080a85a9e7SLiu GangBE CAREFUL! For some special cases, the local device can not use 39090a85a9e7SLiu Gang"saveenv" command. For example, the local device will get the 3910fc54c7faSLiu Gangenvironment stored in a remote NOR flash by SRIO or PCIE link, 3911fc54c7faSLiu Gangbut it can not erase, write this NOR flash by SRIO or PCIE interface. 39120a85a9e7SLiu Gang 391351bfee19SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_NAND: 391413a5695bSwdenk 391513a5695bSwdenk Define this if you have a NAND device which you want to use 391613a5695bSwdenk for the environment. 391713a5695bSwdenk 39180e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 39190e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 392013a5695bSwdenk 392113a5695bSwdenk These two #defines specify the offset and size of the environment 3922fdd813deSScott Wood area within the first NAND device. CONFIG_ENV_OFFSET must be 3923fdd813deSScott Wood aligned to an erase block boundary. 39245779d8d9Swdenk 3925fdd813deSScott Wood - CONFIG_ENV_OFFSET_REDUND (optional): 3926e443c944SMarkus Klotzbuecher 39270e8d1586SJean-Christophe PLAGNIOL-VILLARD This setting describes a second storage area of CONFIG_ENV_SIZE 3928fdd813deSScott Wood size used to hold a redundant copy of the environment data, so 3929fdd813deSScott Wood that there is a valid backup copy in case there is a power failure 3930fdd813deSScott Wood during a "saveenv" operation. CONFIG_ENV_OFFSET_RENDUND must be 3931fdd813deSScott Wood aligned to an erase block boundary. 3932e443c944SMarkus Klotzbuecher 3933fdd813deSScott Wood - CONFIG_ENV_RANGE (optional): 3934fdd813deSScott Wood 3935fdd813deSScott Wood Specifies the length of the region in which the environment 3936fdd813deSScott Wood can be written. This should be a multiple of the NAND device's 3937fdd813deSScott Wood block size. Specifying a range with more erase blocks than 3938fdd813deSScott Wood are needed to hold CONFIG_ENV_SIZE allows bad blocks within 3939fdd813deSScott Wood the range to be avoided. 3940fdd813deSScott Wood 3941fdd813deSScott Wood - CONFIG_ENV_OFFSET_OOB (optional): 3942fdd813deSScott Wood 3943fdd813deSScott Wood Enables support for dynamically retrieving the offset of the 3944fdd813deSScott Wood environment from block zero's out-of-band data. The 3945fdd813deSScott Wood "nand env.oob" command can be used to record this offset. 3946fdd813deSScott Wood Currently, CONFIG_ENV_OFFSET_REDUND is not supported when 3947fdd813deSScott Wood using CONFIG_ENV_OFFSET_OOB. 3948e443c944SMarkus Klotzbuecher 3949b74ab737SGuennadi Liakhovetski- CONFIG_NAND_ENV_DST 3950b74ab737SGuennadi Liakhovetski 3951b74ab737SGuennadi Liakhovetski Defines address in RAM to which the nand_spl code should copy the 3952b74ab737SGuennadi Liakhovetski environment. If redundant environment is used, it will be copied to 3953b74ab737SGuennadi Liakhovetski CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE. 3954b74ab737SGuennadi Liakhovetski 39552b74433fSJoe Hershberger- CONFIG_ENV_IS_IN_UBI: 39562b74433fSJoe Hershberger 39572b74433fSJoe Hershberger Define this if you have an UBI volume that you want to use for the 39582b74433fSJoe Hershberger environment. This has the benefit of wear-leveling the environment 39592b74433fSJoe Hershberger accesses, which is important on NAND. 39602b74433fSJoe Hershberger 39612b74433fSJoe Hershberger - CONFIG_ENV_UBI_PART: 39622b74433fSJoe Hershberger 39632b74433fSJoe Hershberger Define this to a string that is the mtd partition containing the UBI. 39642b74433fSJoe Hershberger 39652b74433fSJoe Hershberger - CONFIG_ENV_UBI_VOLUME: 39662b74433fSJoe Hershberger 39672b74433fSJoe Hershberger Define this to the name of the volume that you want to store the 39682b74433fSJoe Hershberger environment in. 39692b74433fSJoe Hershberger 3970785881f7SJoe Hershberger - CONFIG_ENV_UBI_VOLUME_REDUND: 3971785881f7SJoe Hershberger 3972785881f7SJoe Hershberger Define this to the name of another volume to store a second copy of 3973785881f7SJoe Hershberger the environment in. This will enable redundant environments in UBI. 3974785881f7SJoe Hershberger It is assumed that both volumes are in the same MTD partition. 3975785881f7SJoe Hershberger 39762b74433fSJoe Hershberger - CONFIG_UBI_SILENCE_MSG 39772b74433fSJoe Hershberger - CONFIG_UBIFS_SILENCE_MSG 39782b74433fSJoe Hershberger 39792b74433fSJoe Hershberger You will probably want to define these to avoid a really noisy system 39802b74433fSJoe Hershberger when storing the env in UBI. 39812b74433fSJoe Hershberger 398206e4ae5fSStephen Warren- CONFIG_ENV_IS_IN_MMC: 398306e4ae5fSStephen Warren 398406e4ae5fSStephen Warren Define this if you have an MMC device which you want to use for the 398506e4ae5fSStephen Warren environment. 398606e4ae5fSStephen Warren 398706e4ae5fSStephen Warren - CONFIG_SYS_MMC_ENV_DEV: 398806e4ae5fSStephen Warren 398906e4ae5fSStephen Warren Specifies which MMC device the environment is stored in. 399006e4ae5fSStephen Warren 399106e4ae5fSStephen Warren - CONFIG_SYS_MMC_ENV_PART (optional): 399206e4ae5fSStephen Warren 399306e4ae5fSStephen Warren Specifies which MMC partition the environment is stored in. If not 399406e4ae5fSStephen Warren set, defaults to partition 0, the user area. Common values might be 399506e4ae5fSStephen Warren 1 (first MMC boot partition), 2 (second MMC boot partition). 399606e4ae5fSStephen Warren 399706e4ae5fSStephen Warren - CONFIG_ENV_OFFSET: 399806e4ae5fSStephen Warren - CONFIG_ENV_SIZE: 399906e4ae5fSStephen Warren 400006e4ae5fSStephen Warren These two #defines specify the offset and size of the environment 400106e4ae5fSStephen Warren area within the specified MMC device. 400206e4ae5fSStephen Warren 40035c088ee8SStephen Warren If offset is positive (the usual case), it is treated as relative to 40045c088ee8SStephen Warren the start of the MMC partition. If offset is negative, it is treated 40055c088ee8SStephen Warren as relative to the end of the MMC partition. This can be useful if 40065c088ee8SStephen Warren your board may be fitted with different MMC devices, which have 40075c088ee8SStephen Warren different sizes for the MMC partitions, and you always want the 40085c088ee8SStephen Warren environment placed at the very end of the partition, to leave the 40095c088ee8SStephen Warren maximum possible space before it, to store other data. 40105c088ee8SStephen Warren 401106e4ae5fSStephen Warren These two values are in units of bytes, but must be aligned to an 401206e4ae5fSStephen Warren MMC sector boundary. 401306e4ae5fSStephen Warren 401406e4ae5fSStephen Warren - CONFIG_ENV_OFFSET_REDUND (optional): 401506e4ae5fSStephen Warren 401606e4ae5fSStephen Warren Specifies a second storage area, of CONFIG_ENV_SIZE size, used to 401706e4ae5fSStephen Warren hold a redundant copy of the environment data. This provides a 401806e4ae5fSStephen Warren valid backup copy in case the other copy is corrupted, e.g. due 401906e4ae5fSStephen Warren to a power failure during a "saveenv" operation. 402006e4ae5fSStephen Warren 40215c088ee8SStephen Warren This value may also be positive or negative; this is handled in the 40225c088ee8SStephen Warren same way as CONFIG_ENV_OFFSET. 40235c088ee8SStephen Warren 402406e4ae5fSStephen Warren This value is also in units of bytes, but must also be aligned to 402506e4ae5fSStephen Warren an MMC sector boundary. 402606e4ae5fSStephen Warren 402706e4ae5fSStephen Warren - CONFIG_ENV_SIZE_REDUND (optional): 402806e4ae5fSStephen Warren 402906e4ae5fSStephen Warren This value need not be set, even when CONFIG_ENV_OFFSET_REDUND is 403006e4ae5fSStephen Warren set. If this value is set, it must be set to the same value as 403106e4ae5fSStephen Warren CONFIG_ENV_SIZE. 403206e4ae5fSStephen Warren 40336d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPI_INIT_OFFSET 4034c609719bSwdenk 4035c609719bSwdenk Defines offset to the initial SPI buffer area in DPRAM. The 4036c609719bSwdenk area is used at an early stage (ROM part) if the environment 4037c609719bSwdenk is configured to reside in the SPI EEPROM: We need a 520 byte 4038c609719bSwdenk scratch DPRAM area. It is used between the two initialization 4039c609719bSwdenk calls (spi_init_f() and spi_init_r()). A value of 0xB00 seems 4040c609719bSwdenk to be a good choice since it makes it far enough from the 4041c609719bSwdenk start of the data area as well as from the stack pointer. 4042c609719bSwdenk 4043e881cb56SBruce AdlerPlease note that the environment is read-only until the monitor 4044c609719bSwdenkhas been relocated to RAM and a RAM copy of the environment has been 4045cdb74977SWolfgang Denkcreated; also, when using EEPROM you will have to use getenv_f() 4046c609719bSwdenkuntil then to read environment variables. 4047c609719bSwdenk 404885ec0bccSwdenkThe environment is protected by a CRC32 checksum. Before the monitor 404985ec0bccSwdenkis relocated into RAM, as a result of a bad CRC you will be working 405085ec0bccSwdenkwith the compiled-in default environment - *silently*!!! [This is 405185ec0bccSwdenknecessary, because the first environment variable we need is the 405285ec0bccSwdenk"baudrate" setting for the console - if we have a bad CRC, we don't 405385ec0bccSwdenkhave any device yet where we could complain.] 4054c609719bSwdenk 4055c609719bSwdenkNote: once the monitor has been relocated, then it will complain if 4056c609719bSwdenkthe default environment is used; a new CRC is computed as soon as you 405785ec0bccSwdenkuse the "saveenv" command to store a valid environment. 4058c609719bSwdenk 40596d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FAULT_ECHO_LINK_DOWN: 4060fc3e2165Swdenk Echo the inverted Ethernet link state to the fault LED. 4061fc3e2165Swdenk 40626d0f6bcfSJean-Christophe PLAGNIOL-VILLARD Note: If this option is active, then CONFIG_SYS_FAULT_MII_ADDR 4063fc3e2165Swdenk also needs to be defined. 4064fc3e2165Swdenk 40656d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FAULT_MII_ADDR: 4066fc3e2165Swdenk MII address of the PHY to check for the Ethernet link state. 4067c609719bSwdenk 4068f5675aa5SRon Madrid- CONFIG_NS16550_MIN_FUNCTIONS: 4069f5675aa5SRon Madrid Define this if you desire to only have use of the NS16550_init 4070f5675aa5SRon Madrid and NS16550_putc functions for the serial driver located at 4071f5675aa5SRon Madrid drivers/serial/ns16550.c. This option is useful for saving 4072f5675aa5SRon Madrid space for already greatly restricted images, including but not 4073f5675aa5SRon Madrid limited to NAND_SPL configurations. 4074f5675aa5SRon Madrid 4075b2b92f53SSimon Glass- CONFIG_DISPLAY_BOARDINFO 4076b2b92f53SSimon Glass Display information about the board that U-Boot is running on 4077b2b92f53SSimon Glass when U-Boot starts up. The board function checkboard() is called 4078b2b92f53SSimon Glass to do this. 4079b2b92f53SSimon Glass 4080e2e3e2b1SSimon Glass- CONFIG_DISPLAY_BOARDINFO_LATE 4081e2e3e2b1SSimon Glass Similar to the previous option, but display this information 4082e2e3e2b1SSimon Glass later, once stdio is running and output goes to the LCD, if 4083e2e3e2b1SSimon Glass present. 4084e2e3e2b1SSimon Glass 4085c609719bSwdenkLow Level (hardware related) configuration options: 4086dc7c9a1aSwdenk--------------------------------------------------- 4087c609719bSwdenk 40886d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CACHELINE_SIZE: 4089c609719bSwdenk Cache Line Size of the CPU. 4090c609719bSwdenk 40916d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DEFAULT_IMMR: 4092c609719bSwdenk Default address of the IMMR after system reset. 40932535d602Swdenk 40942535d602Swdenk Needed on some 8260 systems (MPC8260ADS, PQ2FADS-ZU, 40952535d602Swdenk and RPXsuper) to be able to adjust the position of 40962535d602Swdenk the IMMR register after a reset. 4097c609719bSwdenk 4098e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_DEFAULT: 4099e46fedfeSTimur Tabi Default (power-on reset) physical address of CCSR on Freescale 4100e46fedfeSTimur Tabi PowerPC SOCs. 4101e46fedfeSTimur Tabi 4102e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR: 4103e46fedfeSTimur Tabi Virtual address of CCSR. On a 32-bit build, this is typically 4104e46fedfeSTimur Tabi the same value as CONFIG_SYS_CCSRBAR_DEFAULT. 4105e46fedfeSTimur Tabi 4106e46fedfeSTimur Tabi CONFIG_SYS_DEFAULT_IMMR must also be set to this value, 4107e46fedfeSTimur Tabi for cross-platform code that uses that macro instead. 4108e46fedfeSTimur Tabi 4109e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS: 4110e46fedfeSTimur Tabi Physical address of CCSR. CCSR can be relocated to a new 4111e46fedfeSTimur Tabi physical address, if desired. In this case, this macro should 4112e46fedfeSTimur Tabi be set to that address. Otherwise, it should be set to the 4113e46fedfeSTimur Tabi same value as CONFIG_SYS_CCSRBAR_DEFAULT. For example, CCSR 4114e46fedfeSTimur Tabi is typically relocated on 36-bit builds. It is recommended 4115e46fedfeSTimur Tabi that this macro be defined via the _HIGH and _LOW macros: 4116e46fedfeSTimur Tabi 4117e46fedfeSTimur Tabi #define CONFIG_SYS_CCSRBAR_PHYS ((CONFIG_SYS_CCSRBAR_PHYS_HIGH 4118e46fedfeSTimur Tabi * 1ull) << 32 | CONFIG_SYS_CCSRBAR_PHYS_LOW) 4119e46fedfeSTimur Tabi 4120e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS_HIGH: 4121e46fedfeSTimur Tabi Bits 33-36 of CONFIG_SYS_CCSRBAR_PHYS. This value is typically 4122e46fedfeSTimur Tabi either 0 (32-bit build) or 0xF (36-bit build). This macro is 4123e46fedfeSTimur Tabi used in assembly code, so it must not contain typecasts or 4124e46fedfeSTimur Tabi integer size suffixes (e.g. "ULL"). 4125e46fedfeSTimur Tabi 4126e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS_LOW: 4127e46fedfeSTimur Tabi Lower 32-bits of CONFIG_SYS_CCSRBAR_PHYS. This macro is 4128e46fedfeSTimur Tabi used in assembly code, so it must not contain typecasts or 4129e46fedfeSTimur Tabi integer size suffixes (e.g. "ULL"). 4130e46fedfeSTimur Tabi 4131e46fedfeSTimur Tabi- CONFIG_SYS_CCSR_DO_NOT_RELOCATE: 4132e46fedfeSTimur Tabi If this macro is defined, then CONFIG_SYS_CCSRBAR_PHYS will be 4133e46fedfeSTimur Tabi forced to a value that ensures that CCSR is not relocated. 4134e46fedfeSTimur Tabi 41357f6c2cbcSwdenk- Floppy Disk Support: 41366d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FDC_DRIVE_NUMBER 41377f6c2cbcSwdenk 41387f6c2cbcSwdenk the default drive number (default value 0) 41397f6c2cbcSwdenk 41406d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_ISA_IO_STRIDE 41417f6c2cbcSwdenk 414211ccc33fSMarcel Ziswiler defines the spacing between FDC chipset registers 41437f6c2cbcSwdenk (default value 1) 41447f6c2cbcSwdenk 41456d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_ISA_IO_OFFSET 41467f6c2cbcSwdenk 41477f6c2cbcSwdenk defines the offset of register from address. It 41487f6c2cbcSwdenk depends on which part of the data bus is connected to 414911ccc33fSMarcel Ziswiler the FDC chipset. (default value 0) 41507f6c2cbcSwdenk 41516d0f6bcfSJean-Christophe PLAGNIOL-VILLARD If CONFIG_SYS_ISA_IO_STRIDE CONFIG_SYS_ISA_IO_OFFSET and 41526d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FDC_DRIVE_NUMBER are undefined, they take their 41537f6c2cbcSwdenk default value. 41547f6c2cbcSwdenk 41556d0f6bcfSJean-Christophe PLAGNIOL-VILLARD if CONFIG_SYS_FDC_HW_INIT is defined, then the function 41567f6c2cbcSwdenk fdc_hw_init() is called at the beginning of the FDC 41577f6c2cbcSwdenk setup. fdc_hw_init() must be provided by the board 41587f6c2cbcSwdenk source code. It is used to make hardware dependant 41597f6c2cbcSwdenk initializations. 41607f6c2cbcSwdenk 41610abddf82SMacpaul Lin- CONFIG_IDE_AHB: 41620abddf82SMacpaul Lin Most IDE controllers were designed to be connected with PCI 41630abddf82SMacpaul Lin interface. Only few of them were designed for AHB interface. 41640abddf82SMacpaul Lin When software is doing ATA command and data transfer to 41650abddf82SMacpaul Lin IDE devices through IDE-AHB controller, some additional 41660abddf82SMacpaul Lin registers accessing to these kind of IDE-AHB controller 41670abddf82SMacpaul Lin is requierd. 41680abddf82SMacpaul Lin 41696d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_IMMR: Physical address of the Internal Memory. 417025d6712aSwdenk DO NOT CHANGE unless you know exactly what you're 417125d6712aSwdenk doing! (11-4) [MPC8xx/82xx systems only] 4172c609719bSwdenk 41736d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_INIT_RAM_ADDR: 4174c609719bSwdenk 41757152b1d0Swdenk Start address of memory area that can be used for 4176c609719bSwdenk initial data and stack; please note that this must be 4177c609719bSwdenk writable memory that is working WITHOUT special 4178c609719bSwdenk initialization, i. e. you CANNOT use normal RAM which 4179c609719bSwdenk will become available only after programming the 4180c609719bSwdenk memory controller and running certain initialization 4181c609719bSwdenk sequences. 4182c609719bSwdenk 4183c609719bSwdenk U-Boot uses the following memory types: 4184c609719bSwdenk - MPC8xx and MPC8260: IMMR (internal memory of the CPU) 4185c609719bSwdenk - MPC824X: data cache 4186c609719bSwdenk - PPC4xx: data cache 4187c609719bSwdenk 41886d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_GBL_DATA_OFFSET: 4189c609719bSwdenk 4190c609719bSwdenk Offset of the initial data structure in the memory 41916d0f6bcfSJean-Christophe PLAGNIOL-VILLARD area defined by CONFIG_SYS_INIT_RAM_ADDR. Usually 41926d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_GBL_DATA_OFFSET is chosen such that the initial 4193c609719bSwdenk data is located at the end of the available space 4194553f0982SWolfgang Denk (sometimes written as (CONFIG_SYS_INIT_RAM_SIZE - 41956d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_DATA_SIZE), and the initial stack is just 41966d0f6bcfSJean-Christophe PLAGNIOL-VILLARD below that area (growing from (CONFIG_SYS_INIT_RAM_ADDR + 41976d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_GBL_DATA_OFFSET) downward. 4198c609719bSwdenk 4199c609719bSwdenk Note: 4200c609719bSwdenk On the MPC824X (or other systems that use the data 4201c609719bSwdenk cache for initial memory) the address chosen for 42026d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_RAM_ADDR is basically arbitrary - it must 4203c609719bSwdenk point to an otherwise UNUSED address space between 4204c609719bSwdenk the top of RAM and the start of the PCI space. 4205c609719bSwdenk 42066d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SIUMCR: SIU Module Configuration (11-6) 4207c609719bSwdenk 42086d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SYPCR: System Protection Control (11-9) 4209c609719bSwdenk 42106d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_TBSCR: Time Base Status and Control (11-26) 4211c609719bSwdenk 42126d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PISCR: Periodic Interrupt Status and Control (11-31) 4213c609719bSwdenk 42146d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PLPRCR: PLL, Low-Power, and Reset Control Register (15-30) 4215c609719bSwdenk 42166d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SCCR: System Clock and reset Control Register (15-27) 4217c609719bSwdenk 42186d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_OR_TIMING_SDRAM: 4219c609719bSwdenk SDRAM timing 4220c609719bSwdenk 42216d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAMR_PTA: 4222c609719bSwdenk periodic timer for refresh 4223c609719bSwdenk 42246d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DER: Debug Event Register (37-47) 4225c609719bSwdenk 42266d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- FLASH_BASE0_PRELIM, FLASH_BASE1_PRELIM, CONFIG_SYS_REMAP_OR_AM, 42276d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PRELIM_OR_AM, CONFIG_SYS_OR_TIMING_FLASH, CONFIG_SYS_OR0_REMAP, 42286d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR0_PRELIM, CONFIG_SYS_BR0_PRELIM, CONFIG_SYS_OR1_REMAP, CONFIG_SYS_OR1_PRELIM, 42296d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BR1_PRELIM: 4230c609719bSwdenk Memory Controller Definitions: BR0/1 and OR0/1 (FLASH) 4231c609719bSwdenk 4232c609719bSwdenk- SDRAM_BASE2_PRELIM, SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE, 42336d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR_TIMING_SDRAM, CONFIG_SYS_OR2_PRELIM, CONFIG_SYS_BR2_PRELIM, 42346d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR3_PRELIM, CONFIG_SYS_BR3_PRELIM: 4235c609719bSwdenk Memory Controller Definitions: BR2/3 and OR2/3 (SDRAM) 4236c609719bSwdenk 42376d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAMR_PTA, CONFIG_SYS_MPTPR_2BK_4K, CONFIG_SYS_MPTPR_1BK_4K, CONFIG_SYS_MPTPR_2BK_8K, 42386d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MPTPR_1BK_8K, CONFIG_SYS_MAMR_8COL, CONFIG_SYS_MAMR_9COL: 4239c609719bSwdenk Machine Mode Register and Memory Periodic Timer 4240c609719bSwdenk Prescaler definitions (SDRAM timing) 4241c609719bSwdenk 42426d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_I2C_UCODE_PATCH, CONFIG_SYS_I2C_DPMEM_OFFSET [0x1FC0]: 4243c609719bSwdenk enable I2C microcode relocation patch (MPC8xx); 4244c609719bSwdenk define relocation offset in DPRAM [DSP2] 4245c609719bSwdenk 42466d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SMC_UCODE_PATCH, CONFIG_SYS_SMC_DPMEM_OFFSET [0x1FC0]: 4247b423d055SHeiko Schocher enable SMC microcode relocation patch (MPC8xx); 4248b423d055SHeiko Schocher define relocation offset in DPRAM [SMC1] 4249b423d055SHeiko Schocher 42506d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPI_UCODE_PATCH, CONFIG_SYS_SPI_DPMEM_OFFSET [0x1FC0]: 4251c609719bSwdenk enable SPI microcode relocation patch (MPC8xx); 4252c609719bSwdenk define relocation offset in DPRAM [SCC4] 4253c609719bSwdenk 42546d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_USE_OSCCLK: 4255c609719bSwdenk Use OSCM clock mode on MBX8xx board. Be careful, 4256c609719bSwdenk wrong setting might damage your board. Read 4257c609719bSwdenk doc/README.MBX before setting this variable! 4258c609719bSwdenk 42596d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CPM_POST_WORD_ADDR: (MPC8xx, MPC8260 only) 4260ea909b76Swdenk Offset of the bootmode word in DPRAM used by post 4261ea909b76Swdenk (Power On Self Tests). This definition overrides 4262ea909b76Swdenk #define'd default value in commproc.h resp. 4263ea909b76Swdenk cpm_8260.h. 4264ea909b76Swdenk 42656d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PCI_SLV_MEM_LOCAL, CONFIG_SYS_PCI_SLV_MEM_BUS, CONFIG_SYS_PICMR0_MASK_ATTRIB, 42666d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR0_LOCAL, CONFIG_SYS_PCIMSK0_MASK, CONFIG_SYS_PCI_MSTR1_LOCAL, 42676d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCIMSK1_MASK, CONFIG_SYS_PCI_MSTR_MEM_LOCAL, CONFIG_SYS_PCI_MSTR_MEM_BUS, 42686d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CPU_PCI_MEM_START, CONFIG_SYS_PCI_MSTR_MEM_SIZE, CONFIG_SYS_POCMR0_MASK_ATTRIB, 42696d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_MEMIO_LOCAL, CONFIG_SYS_PCI_MSTR_MEMIO_BUS, CPU_PCI_MEMIO_START, 42706d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_MEMIO_SIZE, CONFIG_SYS_POCMR1_MASK_ATTRIB, CONFIG_SYS_PCI_MSTR_IO_LOCAL, 42716d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_IO_BUS, CONFIG_SYS_CPU_PCI_IO_START, CONFIG_SYS_PCI_MSTR_IO_SIZE, 42726d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_POCMR2_MASK_ATTRIB: (MPC826x only) 4273a47a12beSStefan Roese Overrides the default PCI memory map in arch/powerpc/cpu/mpc8260/pci.c if set. 42745d232d0eSwdenk 42759cacf4fcSDirk Eibach- CONFIG_PCI_DISABLE_PCIE: 42769cacf4fcSDirk Eibach Disable PCI-Express on systems where it is supported but not 42779cacf4fcSDirk Eibach required. 42789cacf4fcSDirk Eibach 427969fd2d3bSAndrew Sharp- CONFIG_PCI_ENUM_ONLY 428069fd2d3bSAndrew Sharp Only scan through and get the devices on the busses. 428169fd2d3bSAndrew Sharp Don't do any setup work, presumably because someone or 428269fd2d3bSAndrew Sharp something has already done it, and we don't need to do it 428369fd2d3bSAndrew Sharp a second time. Useful for platforms that are pre-booted 428469fd2d3bSAndrew Sharp by coreboot or similar. 428569fd2d3bSAndrew Sharp 4286842033e6SGabor Juhos- CONFIG_PCI_INDIRECT_BRIDGE: 4287842033e6SGabor Juhos Enable support for indirect PCI bridges. 4288842033e6SGabor Juhos 4289a09b9b68SKumar Gala- CONFIG_SYS_SRIO: 4290a09b9b68SKumar Gala Chip has SRIO or not 4291a09b9b68SKumar Gala 4292a09b9b68SKumar Gala- CONFIG_SRIO1: 4293a09b9b68SKumar Gala Board has SRIO 1 port available 4294a09b9b68SKumar Gala 4295a09b9b68SKumar Gala- CONFIG_SRIO2: 4296a09b9b68SKumar Gala Board has SRIO 2 port available 4297a09b9b68SKumar Gala 4298c8b28152SLiu Gang- CONFIG_SRIO_PCIE_BOOT_MASTER 4299c8b28152SLiu Gang Board can support master function for Boot from SRIO and PCIE 4300c8b28152SLiu Gang 4301a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_VIRT: 4302a09b9b68SKumar Gala Virtual Address of SRIO port 'n' memory region 4303a09b9b68SKumar Gala 4304a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_PHYS: 4305a09b9b68SKumar Gala Physical Address of SRIO port 'n' memory region 4306a09b9b68SKumar Gala 4307a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_SIZE: 4308a09b9b68SKumar Gala Size of SRIO port 'n' memory region 4309a09b9b68SKumar Gala 431066bd1846SFabio Estevam- CONFIG_SYS_NAND_BUSWIDTH_16BIT 431166bd1846SFabio Estevam Defined to tell the NAND controller that the NAND chip is using 431266bd1846SFabio Estevam a 16 bit bus. 431366bd1846SFabio Estevam Not all NAND drivers use this symbol. 4314a430e916SFabio Estevam Example of drivers that use it: 431566bd1846SFabio Estevam - drivers/mtd/nand/ndfc.c 4316a430e916SFabio Estevam - drivers/mtd/nand/mxc_nand.c 4317eced4626SAlex Waterman 4318eced4626SAlex Waterman- CONFIG_SYS_NDFC_EBC0_CFG 4319eced4626SAlex Waterman Sets the EBC0_CFG register for the NDFC. If not defined 4320eced4626SAlex Waterman a default value will be used. 4321eced4626SAlex Waterman 4322bb99ad6dSBen Warren- CONFIG_SPD_EEPROM 4323218ca724SWolfgang Denk Get DDR timing information from an I2C EEPROM. Common 4324218ca724SWolfgang Denk with pluggable memory modules such as SODIMMs 4325218ca724SWolfgang Denk 4326bb99ad6dSBen Warren SPD_EEPROM_ADDRESS 4327bb99ad6dSBen Warren I2C address of the SPD EEPROM 4328bb99ad6dSBen Warren 43296d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPD_BUS_NUM 4330218ca724SWolfgang Denk If SPD EEPROM is on an I2C bus other than the first 4331218ca724SWolfgang Denk one, specify here. Note that the value must resolve 4332218ca724SWolfgang Denk to something your driver can deal with. 4333bb99ad6dSBen Warren 43341b3e3c4fSYork Sun- CONFIG_SYS_DDR_RAW_TIMING 43351b3e3c4fSYork Sun Get DDR timing information from other than SPD. Common with 43361b3e3c4fSYork Sun soldered DDR chips onboard without SPD. DDR raw timing 43371b3e3c4fSYork Sun parameters are extracted from datasheet and hard-coded into 43381b3e3c4fSYork Sun header files or board specific files. 43391b3e3c4fSYork Sun 43406f5e1dc5SYork Sun- CONFIG_FSL_DDR_INTERACTIVE 43416f5e1dc5SYork Sun Enable interactive DDR debugging. See doc/README.fsl-ddr. 43426f5e1dc5SYork Sun 43436d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_83XX_DDR_USES_CS0 4344218ca724SWolfgang Denk Only for 83xx systems. If specified, then DDR should 4345218ca724SWolfgang Denk be configured using CS0 and CS1 instead of CS2 and CS3. 43462ad6b513STimur Tabi 4347c26e454dSwdenk- CONFIG_ETHER_ON_FEC[12] 4348c26e454dSwdenk Define to enable FEC[12] on a 8xx series processor. 4349c26e454dSwdenk 4350c26e454dSwdenk- CONFIG_FEC[12]_PHY 4351c26e454dSwdenk Define to the hardcoded PHY address which corresponds 43526e592385Swdenk to the given FEC; i. e. 4353c26e454dSwdenk #define CONFIG_FEC1_PHY 4 4354c26e454dSwdenk means that the PHY with address 4 is connected to FEC1 4355c26e454dSwdenk 4356c26e454dSwdenk When set to -1, means to probe for first available. 4357c26e454dSwdenk 4358c26e454dSwdenk- CONFIG_FEC[12]_PHY_NORXERR 4359c26e454dSwdenk The PHY does not have a RXERR line (RMII only). 4360c26e454dSwdenk (so program the FEC to ignore it). 4361c26e454dSwdenk 4362c26e454dSwdenk- CONFIG_RMII 4363c26e454dSwdenk Enable RMII mode for all FECs. 4364c26e454dSwdenk Note that this is a global option, we can't 4365c26e454dSwdenk have one FEC in standard MII mode and another in RMII mode. 4366c26e454dSwdenk 43675cf91d6bSwdenk- CONFIG_CRC32_VERIFY 43685cf91d6bSwdenk Add a verify option to the crc32 command. 43695cf91d6bSwdenk The syntax is: 43705cf91d6bSwdenk 43715cf91d6bSwdenk => crc32 -v <address> <count> <crc32> 43725cf91d6bSwdenk 43735cf91d6bSwdenk Where address/count indicate a memory area 43745cf91d6bSwdenk and crc32 is the correct crc32 which the 43755cf91d6bSwdenk area should have. 43765cf91d6bSwdenk 437756523f12Swdenk- CONFIG_LOOPW 437856523f12Swdenk Add the "loopw" memory command. This only takes effect if 4379602ad3b3SJon Loeliger the memory commands are activated globally (CONFIG_CMD_MEM). 438056523f12Swdenk 43817b466641Sstroese- CONFIG_MX_CYCLIC 43827b466641Sstroese Add the "mdc" and "mwc" memory commands. These are cyclic 43837b466641Sstroese "md/mw" commands. 43847b466641Sstroese Examples: 43857b466641Sstroese 43867b466641Sstroese => mdc.b 10 4 500 43877b466641Sstroese This command will print 4 bytes (10,11,12,13) each 500 ms. 43887b466641Sstroese 43897b466641Sstroese => mwc.l 100 12345678 10 43907b466641Sstroese This command will write 12345678 to address 100 all 10 ms. 43917b466641Sstroese 43927b466641Sstroese This only takes effect if the memory commands are activated 4393602ad3b3SJon Loeliger globally (CONFIG_CMD_MEM). 43947b466641Sstroese 43958aa1a2d1Swdenk- CONFIG_SKIP_LOWLEVEL_INIT 4396afc1ce82SMacpaul Lin [ARM, NDS32, MIPS only] If this variable is defined, then certain 4397e03f3169SWolfgang Denk low level initializations (like setting up the memory 4398e03f3169SWolfgang Denk controller) are omitted and/or U-Boot does not 4399e03f3169SWolfgang Denk relocate itself into RAM. 44008aa1a2d1Swdenk 4401e03f3169SWolfgang Denk Normally this variable MUST NOT be defined. The only 4402e03f3169SWolfgang Denk exception is when U-Boot is loaded (to RAM) by some 4403e03f3169SWolfgang Denk other boot loader or by a debugger which performs 4404e03f3169SWolfgang Denk these initializations itself. 44058aa1a2d1Swdenk 4406401bb30bSAneesh V- CONFIG_SPL_BUILD 4407df81238bSMagnus Lilja Modifies the behaviour of start.S when compiling a loader 4408df81238bSMagnus Lilja that is executed before the actual U-Boot. E.g. when 4409df81238bSMagnus Lilja compiling a NAND SPL. 4410400558b5Swdenk 44113aa29de0SYing Zhang- CONFIG_TPL_BUILD 44123aa29de0SYing Zhang Modifies the behaviour of start.S when compiling a loader 44133aa29de0SYing Zhang that is executed after the SPL and before the actual U-Boot. 44143aa29de0SYing Zhang It is loaded by the SPL. 44153aa29de0SYing Zhang 44165df572f0SYing Zhang- CONFIG_SYS_MPC85XX_NO_RESETVEC 44175df572f0SYing Zhang Only for 85xx systems. If this variable is specified, the section 44185df572f0SYing Zhang .resetvec is not kept and the section .bootpg is placed in the 44195df572f0SYing Zhang previous 4k of the .text section. 44205df572f0SYing Zhang 44214213fc29SSimon Glass- CONFIG_ARCH_MAP_SYSMEM 44224213fc29SSimon Glass Generally U-Boot (and in particular the md command) uses 44234213fc29SSimon Glass effective address. It is therefore not necessary to regard 44244213fc29SSimon Glass U-Boot address as virtual addresses that need to be translated 44254213fc29SSimon Glass to physical addresses. However, sandbox requires this, since 44264213fc29SSimon Glass it maintains its own little RAM buffer which contains all 44274213fc29SSimon Glass addressable memory. This option causes some memory accesses 44284213fc29SSimon Glass to be mapped through map_sysmem() / unmap_sysmem(). 44294213fc29SSimon Glass 4430d8834a13SMatthias Weisser- CONFIG_USE_ARCH_MEMCPY 4431d8834a13SMatthias Weisser CONFIG_USE_ARCH_MEMSET 4432d8834a13SMatthias Weisser If these options are used a optimized version of memcpy/memset will 4433d8834a13SMatthias Weisser be used if available. These functions may be faster under some 4434d8834a13SMatthias Weisser conditions but may increase the binary size. 4435d8834a13SMatthias Weisser 4436588a13f7SSimon Glass- CONFIG_X86_RESET_VECTOR 4437588a13f7SSimon Glass If defined, the x86 reset vector code is included. This is not 4438588a13f7SSimon Glass needed when U-Boot is running from Coreboot. 4439b16f521aSGabe Black 4440fc33705eSMark Jackson- CONFIG_SYS_MPUCLK 4441fc33705eSMark Jackson Defines the MPU clock speed (in MHz). 4442fc33705eSMark Jackson 4443fc33705eSMark Jackson NOTE : currently only supported on AM335x platforms. 44445b5ece9eSGabe Black 444516678eb4SHeiko Schocher- CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC: 444616678eb4SHeiko Schocher Enables the RTC32K OSC on AM33xx based plattforms 444716678eb4SHeiko Schocher 4448f2717b47STimur TabiFreescale QE/FMAN Firmware Support: 4449f2717b47STimur Tabi----------------------------------- 4450f2717b47STimur Tabi 4451f2717b47STimur TabiThe Freescale QUICCEngine (QE) and Frame Manager (FMAN) both support the 4452f2717b47STimur Tabiloading of "firmware", which is encoded in the QE firmware binary format. 4453f2717b47STimur TabiThis firmware often needs to be loaded during U-Boot booting, so macros 4454f2717b47STimur Tabiare used to identify the storage device (NOR flash, SPI, etc) and the address 4455f2717b47STimur Tabiwithin that device. 4456f2717b47STimur Tabi 4457f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_ADDR 4458f2717b47STimur Tabi The address in the storage device where the firmware is located. The 4459f2717b47STimur Tabi meaning of this address depends on which CONFIG_SYS_QE_FW_IN_xxx macro 4460f2717b47STimur Tabi is also specified. 4461f2717b47STimur Tabi 4462f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_LENGTH 4463f2717b47STimur Tabi The maximum possible size of the firmware. The firmware binary format 4464f2717b47STimur Tabi has a field that specifies the actual size of the firmware, but it 4465f2717b47STimur Tabi might not be possible to read any part of the firmware unless some 4466f2717b47STimur Tabi local storage is allocated to hold the entire firmware first. 4467f2717b47STimur Tabi 4468f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_NOR 4469f2717b47STimur Tabi Specifies that QE/FMAN firmware is located in NOR flash, mapped as 4470f2717b47STimur Tabi normal addressable memory via the LBC. CONFIG_SYS_FMAN_FW_ADDR is the 4471f2717b47STimur Tabi virtual address in NOR flash. 4472f2717b47STimur Tabi 4473f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_NAND 4474f2717b47STimur Tabi Specifies that QE/FMAN firmware is located in NAND flash. 4475f2717b47STimur Tabi CONFIG_SYS_FMAN_FW_ADDR is the offset within NAND flash. 4476f2717b47STimur Tabi 4477f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_MMC 4478f2717b47STimur Tabi Specifies that QE/FMAN firmware is located on the primary SD/MMC 4479f2717b47STimur Tabi device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device. 4480f2717b47STimur Tabi 4481f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_SPIFLASH 4482f2717b47STimur Tabi Specifies that QE/FMAN firmware is located on the primary SPI 4483f2717b47STimur Tabi device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device. 4484f2717b47STimur Tabi 4485292dc6c5SLiu Gang- CONFIG_SYS_QE_FMAN_FW_IN_REMOTE 4486292dc6c5SLiu Gang Specifies that QE/FMAN firmware is located in the remote (master) 4487292dc6c5SLiu Gang memory space. CONFIG_SYS_FMAN_FW_ADDR is a virtual address which 4488fc54c7faSLiu Gang can be mapped from slave TLB->slave LAW->slave SRIO or PCIE outbound 4489fc54c7faSLiu Gang window->master inbound window->master LAW->the ucode address in 4490fc54c7faSLiu Gang master's memory space. 4491f2717b47STimur Tabi 4492c609719bSwdenkBuilding the Software: 4493c609719bSwdenk====================== 4494c609719bSwdenk 4495218ca724SWolfgang DenkBuilding U-Boot has been tested in several native build environments 4496218ca724SWolfgang Denkand in many different cross environments. Of course we cannot support 4497218ca724SWolfgang Denkall possibly existing versions of cross development tools in all 4498218ca724SWolfgang Denk(potentially obsolete) versions. In case of tool chain problems we 4499218ca724SWolfgang Denkrecommend to use the ELDK (see http://www.denx.de/wiki/DULG/ELDK) 4500218ca724SWolfgang Denkwhich is extensively used to build and test U-Boot. 4501c609719bSwdenk 4502218ca724SWolfgang DenkIf you are not using a native environment, it is assumed that you 4503218ca724SWolfgang Denkhave GNU cross compiling tools available in your path. In this case, 4504218ca724SWolfgang Denkyou must set the environment variable CROSS_COMPILE in your shell. 4505218ca724SWolfgang DenkNote that no changes to the Makefile or any other source files are 4506218ca724SWolfgang Denknecessary. For example using the ELDK on a 4xx CPU, please enter: 4507c609719bSwdenk 4508218ca724SWolfgang Denk $ CROSS_COMPILE=ppc_4xx- 4509218ca724SWolfgang Denk $ export CROSS_COMPILE 4510c609719bSwdenk 45112f8d396bSPeter TyserNote: If you wish to generate Windows versions of the utilities in 45122f8d396bSPeter Tyser the tools directory you can use the MinGW toolchain 45132f8d396bSPeter Tyser (http://www.mingw.org). Set your HOST tools to the MinGW 45142f8d396bSPeter Tyser toolchain and execute 'make tools'. For example: 45152f8d396bSPeter Tyser 45162f8d396bSPeter Tyser $ make HOSTCC=i586-mingw32msvc-gcc HOSTSTRIP=i586-mingw32msvc-strip tools 45172f8d396bSPeter Tyser 45182f8d396bSPeter Tyser Binaries such as tools/mkimage.exe will be created which can 45192f8d396bSPeter Tyser be executed on computers running Windows. 45202f8d396bSPeter Tyser 4521c609719bSwdenkU-Boot is intended to be simple to build. After installing the 4522c609719bSwdenksources you must configure U-Boot for one specific board type. This 4523c609719bSwdenkis done by typing: 4524c609719bSwdenk 4525c609719bSwdenk make NAME_config 4526c609719bSwdenk 4527218ca724SWolfgang Denkwhere "NAME_config" is the name of one of the existing configu- 45284d675ae6SMichael Jonesrations; see boards.cfg for supported names. 452954387ac9Swdenk 4530c609719bSwdenkNote: for some board special configuration names may exist; check if 4531c609719bSwdenk additional information is available from the board vendor; for 45322729af9dSwdenk instance, the TQM823L systems are available without (standard) 45332729af9dSwdenk or with LCD support. You can select such additional "features" 453411ccc33fSMarcel Ziswiler when choosing the configuration, i. e. 4535c609719bSwdenk 45362729af9dSwdenk make TQM823L_config 45372729af9dSwdenk - will configure for a plain TQM823L, i. e. no LCD support 4538c609719bSwdenk 4539c609719bSwdenk make TQM823L_LCD_config 4540c609719bSwdenk - will configure for a TQM823L with U-Boot console on LCD 4541c609719bSwdenk 4542c609719bSwdenk etc. 4543c609719bSwdenk 4544c609719bSwdenk 4545c609719bSwdenkFinally, type "make all", and you should get some working U-Boot 45467152b1d0Swdenkimages ready for download to / installation on your system: 4547c609719bSwdenk 4548c609719bSwdenk- "u-boot.bin" is a raw binary image 4549c609719bSwdenk- "u-boot" is an image in ELF binary format 4550c609719bSwdenk- "u-boot.srec" is in Motorola S-Record format 4551c609719bSwdenk 4552baf31249SMarian BalakowiczBy default the build is performed locally and the objects are saved 4553baf31249SMarian Balakowiczin the source directory. One of the two methods can be used to change 4554baf31249SMarian Balakowiczthis behavior and build U-Boot to some external directory: 4555baf31249SMarian Balakowicz 4556baf31249SMarian Balakowicz1. Add O= to the make command line invocations: 4557baf31249SMarian Balakowicz 4558baf31249SMarian Balakowicz make O=/tmp/build distclean 4559baf31249SMarian Balakowicz make O=/tmp/build NAME_config 4560baf31249SMarian Balakowicz make O=/tmp/build all 4561baf31249SMarian Balakowicz 4562baf31249SMarian Balakowicz2. Set environment variable BUILD_DIR to point to the desired location: 4563baf31249SMarian Balakowicz 4564baf31249SMarian Balakowicz export BUILD_DIR=/tmp/build 4565baf31249SMarian Balakowicz make distclean 4566baf31249SMarian Balakowicz make NAME_config 4567baf31249SMarian Balakowicz make all 4568baf31249SMarian Balakowicz 4569baf31249SMarian BalakowiczNote that the command line "O=" setting overrides the BUILD_DIR environment 4570baf31249SMarian Balakowiczvariable. 4571baf31249SMarian Balakowicz 4572c609719bSwdenk 4573c609719bSwdenkPlease be aware that the Makefiles assume you are using GNU make, so 4574c609719bSwdenkfor instance on NetBSD you might need to use "gmake" instead of 4575c609719bSwdenknative "make". 4576c609719bSwdenk 4577c609719bSwdenk 4578c609719bSwdenkIf the system board that you have is not listed, then you will need 4579c609719bSwdenkto port U-Boot to your hardware platform. To do this, follow these 4580c609719bSwdenksteps: 4581c609719bSwdenk 4582c609719bSwdenk1. Add a new configuration option for your board to the toplevel 45834d675ae6SMichael Jones "boards.cfg" file, using the existing entries as examples. 45844d675ae6SMichael Jones Follow the instructions there to keep the boards in order. 4585c609719bSwdenk2. Create a new directory to hold your board specific code. Add any 458685ec0bccSwdenk files you need. In your board directory, you will need at least 458785ec0bccSwdenk the "Makefile", a "<board>.c", "flash.c" and "u-boot.lds". 458885ec0bccSwdenk3. Create a new configuration file "include/configs/<board>.h" for 458985ec0bccSwdenk your board 4590c609719bSwdenk3. If you're porting U-Boot to a new CPU, then also create a new 4591c609719bSwdenk directory to hold your CPU specific code. Add any files you need. 459285ec0bccSwdenk4. Run "make <board>_config" with your new name. 4593c609719bSwdenk5. Type "make", and you should get a working "u-boot.srec" file 4594c609719bSwdenk to be installed on your target system. 459585ec0bccSwdenk6. Debug and solve any problems that might arise. 4596c609719bSwdenk [Of course, this last step is much harder than it sounds.] 4597c609719bSwdenk 4598c609719bSwdenk 4599c609719bSwdenkTesting of U-Boot Modifications, Ports to New Hardware, etc.: 4600c609719bSwdenk============================================================== 4601c609719bSwdenk 4602c609719bSwdenkIf you have modified U-Boot sources (for instance added a new board 4603c609719bSwdenkor support for new devices, a new CPU, etc.) you are expected to 4604c609719bSwdenkprovide feedback to the other developers. The feedback normally takes 4605c609719bSwdenkthe form of a "patch", i. e. a context diff against a certain (latest 4606218ca724SWolfgang Denkofficial or latest in the git repository) version of U-Boot sources. 4607c609719bSwdenk 4608c609719bSwdenkBut before you submit such a patch, please verify that your modifi- 4609c609719bSwdenkcation did not break existing code. At least make sure that *ALL* of 4610c609719bSwdenkthe supported boards compile WITHOUT ANY compiler warnings. To do so, 4611c609719bSwdenkjust run the "MAKEALL" script, which will configure and build U-Boot 4612c609719bSwdenkfor ALL supported system. Be warned, this will take a while. You can 46137152b1d0Swdenkselect which (cross) compiler to use by passing a `CROSS_COMPILE' 4614218ca724SWolfgang Denkenvironment variable to the script, i. e. to use the ELDK cross tools 4615218ca724SWolfgang Denkyou can type 4616c609719bSwdenk 4617c609719bSwdenk CROSS_COMPILE=ppc_8xx- MAKEALL 4618c609719bSwdenk 4619c609719bSwdenkor to build on a native PowerPC system you can type 4620c609719bSwdenk 4621c609719bSwdenk CROSS_COMPILE=' ' MAKEALL 4622c609719bSwdenk 4623218ca724SWolfgang DenkWhen using the MAKEALL script, the default behaviour is to build 4624218ca724SWolfgang DenkU-Boot in the source directory. This location can be changed by 4625218ca724SWolfgang Denksetting the BUILD_DIR environment variable. Also, for each target 4626218ca724SWolfgang Denkbuilt, the MAKEALL script saves two log files (<target>.ERR and 4627218ca724SWolfgang Denk<target>.MAKEALL) in the <source dir>/LOG directory. This default 4628218ca724SWolfgang Denklocation can be changed by setting the MAKEALL_LOGDIR environment 4629218ca724SWolfgang Denkvariable. For example: 4630baf31249SMarian Balakowicz 4631baf31249SMarian Balakowicz export BUILD_DIR=/tmp/build 4632baf31249SMarian Balakowicz export MAKEALL_LOGDIR=/tmp/log 4633baf31249SMarian Balakowicz CROSS_COMPILE=ppc_8xx- MAKEALL 4634baf31249SMarian Balakowicz 4635218ca724SWolfgang DenkWith the above settings build objects are saved in the /tmp/build, 4636218ca724SWolfgang Denklog files are saved in the /tmp/log and the source tree remains clean 4637218ca724SWolfgang Denkduring the whole build process. 4638baf31249SMarian Balakowicz 4639baf31249SMarian Balakowicz 4640c609719bSwdenkSee also "U-Boot Porting Guide" below. 4641c609719bSwdenk 4642c609719bSwdenk 4643c609719bSwdenkMonitor Commands - Overview: 4644c609719bSwdenk============================ 4645c609719bSwdenk 4646c609719bSwdenkgo - start application at address 'addr' 4647c609719bSwdenkrun - run commands in an environment variable 4648c609719bSwdenkbootm - boot application image from memory 4649c609719bSwdenkbootp - boot image via network using BootP/TFTP protocol 465044f074c7SMarek Vasutbootz - boot zImage from memory 4651c609719bSwdenktftpboot- boot image via network using TFTP protocol 4652c609719bSwdenk and env variables "ipaddr" and "serverip" 4653c609719bSwdenk (and eventually "gatewayip") 46541fb7cd49SSimon Glasstftpput - upload a file via network using TFTP protocol 4655c609719bSwdenkrarpboot- boot image via network using RARP/TFTP protocol 4656c609719bSwdenkdiskboot- boot from IDE devicebootd - boot default, i.e., run 'bootcmd' 4657c609719bSwdenkloads - load S-Record file over serial line 4658c609719bSwdenkloadb - load binary file over serial line (kermit mode) 4659c609719bSwdenkmd - memory display 4660c609719bSwdenkmm - memory modify (auto-incrementing) 4661c609719bSwdenknm - memory modify (constant address) 4662c609719bSwdenkmw - memory write (fill) 4663c609719bSwdenkcp - memory copy 4664c609719bSwdenkcmp - memory compare 4665c609719bSwdenkcrc32 - checksum calculation 46660f89c54bSPeter Tyseri2c - I2C sub-system 4667c609719bSwdenksspi - SPI utility commands 4668c609719bSwdenkbase - print or set address offset 4669c609719bSwdenkprintenv- print environment variables 4670c609719bSwdenksetenv - set environment variables 4671c609719bSwdenksaveenv - save environment variables to persistent storage 4672c609719bSwdenkprotect - enable or disable FLASH write protection 4673c609719bSwdenkerase - erase FLASH memory 4674c609719bSwdenkflinfo - print FLASH memory information 467510635afaSKarl O. Pincnand - NAND memory operations (see doc/README.nand) 4676c609719bSwdenkbdinfo - print Board Info structure 4677c609719bSwdenkiminfo - print header information for application image 4678c609719bSwdenkconinfo - print console devices and informations 4679c609719bSwdenkide - IDE sub-system 4680c609719bSwdenkloop - infinite loop on address range 468156523f12Swdenkloopw - infinite write loop on address range 4682c609719bSwdenkmtest - simple RAM test 4683c609719bSwdenkicache - enable or disable instruction cache 4684c609719bSwdenkdcache - enable or disable data cache 4685c609719bSwdenkreset - Perform RESET of the CPU 4686c609719bSwdenkecho - echo args to console 4687c609719bSwdenkversion - print monitor version 4688c609719bSwdenkhelp - print online help 4689c609719bSwdenk? - alias for 'help' 4690c609719bSwdenk 4691c609719bSwdenk 4692c609719bSwdenkMonitor Commands - Detailed Description: 4693c609719bSwdenk======================================== 4694c609719bSwdenk 4695c609719bSwdenkTODO. 4696c609719bSwdenk 4697c609719bSwdenkFor now: just type "help <command>". 4698c609719bSwdenk 4699c609719bSwdenk 4700c609719bSwdenkEnvironment Variables: 4701c609719bSwdenk====================== 4702c609719bSwdenk 4703c609719bSwdenkU-Boot supports user configuration using Environment Variables which 4704c609719bSwdenkcan be made persistent by saving to Flash memory. 4705c609719bSwdenk 4706c609719bSwdenkEnvironment Variables are set using "setenv", printed using 4707c609719bSwdenk"printenv", and saved to Flash using "saveenv". Using "setenv" 4708c609719bSwdenkwithout a value can be used to delete a variable from the 4709c609719bSwdenkenvironment. As long as you don't save the environment you are 4710c609719bSwdenkworking with an in-memory copy. In case the Flash area containing the 4711c609719bSwdenkenvironment is erased by accident, a default environment is provided. 4712c609719bSwdenk 4713c96f86eeSWolfgang DenkSome configuration options can be set using Environment Variables. 4714c96f86eeSWolfgang Denk 4715c96f86eeSWolfgang DenkList of environment variables (most likely not complete): 4716c609719bSwdenk 4717c609719bSwdenk baudrate - see CONFIG_BAUDRATE 4718c609719bSwdenk 4719c609719bSwdenk bootdelay - see CONFIG_BOOTDELAY 4720c609719bSwdenk 4721c609719bSwdenk bootcmd - see CONFIG_BOOTCOMMAND 4722c609719bSwdenk 4723c609719bSwdenk bootargs - Boot arguments when booting an RTOS image 4724c609719bSwdenk 4725c609719bSwdenk bootfile - Name of the image to load with TFTP 4726c609719bSwdenk 47277d721e34SBartlomiej Sieka bootm_low - Memory range available for image processing in the bootm 47287d721e34SBartlomiej Sieka command can be restricted. This variable is given as 47297d721e34SBartlomiej Sieka a hexadecimal number and defines lowest address allowed 47307d721e34SBartlomiej Sieka for use by the bootm command. See also "bootm_size" 47317d721e34SBartlomiej Sieka environment variable. Address defined by "bootm_low" is 47327d721e34SBartlomiej Sieka also the base of the initial memory mapping for the Linux 4733c3624e6eSGrant Likely kernel -- see the description of CONFIG_SYS_BOOTMAPSZ and 4734c3624e6eSGrant Likely bootm_mapsize. 4735c3624e6eSGrant Likely 4736c3624e6eSGrant Likely bootm_mapsize - Size of the initial memory mapping for the Linux kernel. 4737c3624e6eSGrant Likely This variable is given as a hexadecimal number and it 4738c3624e6eSGrant Likely defines the size of the memory region starting at base 4739c3624e6eSGrant Likely address bootm_low that is accessible by the Linux kernel 4740c3624e6eSGrant Likely during early boot. If unset, CONFIG_SYS_BOOTMAPSZ is used 4741c3624e6eSGrant Likely as the default value if it is defined, and bootm_size is 4742c3624e6eSGrant Likely used otherwise. 47437d721e34SBartlomiej Sieka 47447d721e34SBartlomiej Sieka bootm_size - Memory range available for image processing in the bootm 47457d721e34SBartlomiej Sieka command can be restricted. This variable is given as 47467d721e34SBartlomiej Sieka a hexadecimal number and defines the size of the region 47477d721e34SBartlomiej Sieka allowed for use by the bootm command. See also "bootm_low" 47487d721e34SBartlomiej Sieka environment variable. 47497d721e34SBartlomiej Sieka 47504bae9090SBartlomiej Sieka updatefile - Location of the software update file on a TFTP server, used 47514bae9090SBartlomiej Sieka by the automatic software update feature. Please refer to 47524bae9090SBartlomiej Sieka documentation in doc/README.update for more details. 47534bae9090SBartlomiej Sieka 4754c609719bSwdenk autoload - if set to "no" (any string beginning with 'n'), 4755c609719bSwdenk "bootp" will just load perform a lookup of the 4756c609719bSwdenk configuration from the BOOTP server, but not try to 4757c609719bSwdenk load any image using TFTP 4758c609719bSwdenk 4759c609719bSwdenk autostart - if set to "yes", an image loaded using the "bootp", 4760c609719bSwdenk "rarpboot", "tftpboot" or "diskboot" commands will 4761c609719bSwdenk be automatically started (by internally calling 4762c609719bSwdenk "bootm") 4763c609719bSwdenk 47644a6fd34bSwdenk If set to "no", a standalone image passed to the 47654a6fd34bSwdenk "bootm" command will be copied to the load address 47664a6fd34bSwdenk (and eventually uncompressed), but NOT be started. 47674a6fd34bSwdenk This can be used to load and uncompress arbitrary 47684a6fd34bSwdenk data. 47694a6fd34bSwdenk 4770a28afca5SDavid A. Long fdt_high - if set this restricts the maximum address that the 4771a28afca5SDavid A. Long flattened device tree will be copied into upon boot. 4772fa34f6b2SShawn Guo For example, if you have a system with 1 GB memory 4773fa34f6b2SShawn Guo at physical address 0x10000000, while Linux kernel 4774fa34f6b2SShawn Guo only recognizes the first 704 MB as low memory, you 4775fa34f6b2SShawn Guo may need to set fdt_high as 0x3C000000 to have the 4776fa34f6b2SShawn Guo device tree blob be copied to the maximum address 4777fa34f6b2SShawn Guo of the 704 MB low memory, so that Linux kernel can 4778fa34f6b2SShawn Guo access it during the boot procedure. 4779fa34f6b2SShawn Guo 4780a28afca5SDavid A. Long If this is set to the special value 0xFFFFFFFF then 4781a28afca5SDavid A. Long the fdt will not be copied at all on boot. For this 4782a28afca5SDavid A. Long to work it must reside in writable memory, have 4783a28afca5SDavid A. Long sufficient padding on the end of it for u-boot to 4784a28afca5SDavid A. Long add the information it needs into it, and the memory 4785a28afca5SDavid A. Long must be accessible by the kernel. 4786a28afca5SDavid A. Long 4787eea63e05SSimon Glass fdtcontroladdr- if set this is the address of the control flattened 4788eea63e05SSimon Glass device tree used by U-Boot when CONFIG_OF_CONTROL is 4789eea63e05SSimon Glass defined. 4790eea63e05SSimon Glass 479117ea1177Swdenk i2cfast - (PPC405GP|PPC405EP only) 479217ea1177Swdenk if set to 'y' configures Linux I2C driver for fast 479317ea1177Swdenk mode (400kHZ). This environment variable is used in 479417ea1177Swdenk initialization code. So, for changes to be effective 479517ea1177Swdenk it must be saved and board must be reset. 479617ea1177Swdenk 4797c609719bSwdenk initrd_high - restrict positioning of initrd images: 4798c609719bSwdenk If this variable is not set, initrd images will be 4799c609719bSwdenk copied to the highest possible address in RAM; this 4800c609719bSwdenk is usually what you want since it allows for 4801c609719bSwdenk maximum initrd size. If for some reason you want to 4802c609719bSwdenk make sure that the initrd image is loaded below the 48036d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BOOTMAPSZ limit, you can set this environment 4804c609719bSwdenk variable to a value of "no" or "off" or "0". 4805c609719bSwdenk Alternatively, you can set it to a maximum upper 4806c609719bSwdenk address to use (U-Boot will still check that it 4807c609719bSwdenk does not overwrite the U-Boot stack and data). 4808c609719bSwdenk 4809c609719bSwdenk For instance, when you have a system with 16 MB 48107152b1d0Swdenk RAM, and want to reserve 4 MB from use by Linux, 4811c609719bSwdenk you can do this by adding "mem=12M" to the value of 4812c609719bSwdenk the "bootargs" variable. However, now you must make 48137152b1d0Swdenk sure that the initrd image is placed in the first 4814c609719bSwdenk 12 MB as well - this can be done with 4815c609719bSwdenk 4816c609719bSwdenk setenv initrd_high 00c00000 4817c609719bSwdenk 481838b99261Swdenk If you set initrd_high to 0xFFFFFFFF, this is an 481938b99261Swdenk indication to U-Boot that all addresses are legal 482038b99261Swdenk for the Linux kernel, including addresses in flash 482138b99261Swdenk memory. In this case U-Boot will NOT COPY the 482238b99261Swdenk ramdisk at all. This may be useful to reduce the 482338b99261Swdenk boot time on your system, but requires that this 482438b99261Swdenk feature is supported by your Linux kernel. 482538b99261Swdenk 4826c609719bSwdenk ipaddr - IP address; needed for tftpboot command 4827c609719bSwdenk 4828c609719bSwdenk loadaddr - Default load address for commands like "bootp", 4829dc7c9a1aSwdenk "rarpboot", "tftpboot", "loadb" or "diskboot" 4830c609719bSwdenk 4831c609719bSwdenk loads_echo - see CONFIG_LOADS_ECHO 4832c609719bSwdenk 4833c609719bSwdenk serverip - TFTP server IP address; needed for tftpboot command 4834c609719bSwdenk 4835c609719bSwdenk bootretry - see CONFIG_BOOT_RETRY_TIME 4836c609719bSwdenk 4837c609719bSwdenk bootdelaykey - see CONFIG_AUTOBOOT_DELAY_STR 4838c609719bSwdenk 4839c609719bSwdenk bootstopkey - see CONFIG_AUTOBOOT_STOP_STR 4840c609719bSwdenk 4841e2a53458SMike Frysinger ethprime - controls which interface is used first. 4842a3d991bdSwdenk 4843e2a53458SMike Frysinger ethact - controls which interface is currently active. 4844e2a53458SMike Frysinger For example you can do the following 4845a3d991bdSwdenk 484648690d80SHeiko Schocher => setenv ethact FEC 484748690d80SHeiko Schocher => ping 192.168.0.1 # traffic sent on FEC 484848690d80SHeiko Schocher => setenv ethact SCC 484948690d80SHeiko Schocher => ping 10.0.0.1 # traffic sent on SCC 4850a3d991bdSwdenk 4851e1692577SMatthias Fuchs ethrotate - When set to "no" U-Boot does not go through all 4852e1692577SMatthias Fuchs available network interfaces. 4853e1692577SMatthias Fuchs It just stays at the currently selected interface. 4854e1692577SMatthias Fuchs 4855a3d991bdSwdenk netretry - When set to "no" each network operation will 4856a3d991bdSwdenk either succeed or fail without retrying. 48576e592385Swdenk When set to "once" the network operation will 48586e592385Swdenk fail when all the available network interfaces 48596e592385Swdenk are tried once without success. 4860a3d991bdSwdenk Useful on scripts which control the retry operation 4861a3d991bdSwdenk themselves. 4862a3d991bdSwdenk 4863b4e2f89dSJean-Christophe PLAGNIOL-VILLARD npe_ucode - set load address for the NPE microcode 4864a1cf027aSJean-Christophe PLAGNIOL-VILLARD 48658d51aacdSSimon Glass silent_linux - If set then linux will be told to boot silently, by 48668d51aacdSSimon Glass changing the console to be empty. If "yes" it will be 48678d51aacdSSimon Glass made silent. If "no" it will not be made silent. If 48688d51aacdSSimon Glass unset, then it will be made silent if the U-Boot console 48698d51aacdSSimon Glass is silent. 48708d51aacdSSimon Glass 487128cb9375SWolfgang Denk tftpsrcport - If this is set, the value is used for TFTP's 4872ecb0ccd9SWolfgang Denk UDP source port. 4873ecb0ccd9SWolfgang Denk 487428cb9375SWolfgang Denk tftpdstport - If this is set, the value is used for TFTP's UDP 487528cb9375SWolfgang Denk destination port instead of the Well Know Port 69. 487628cb9375SWolfgang Denk 4877c96f86eeSWolfgang Denk tftpblocksize - Block size to use for TFTP transfers; if not set, 4878c96f86eeSWolfgang Denk we use the TFTP server's default block size 4879c96f86eeSWolfgang Denk 4880c96f86eeSWolfgang Denk tftptimeout - Retransmission timeout for TFTP packets (in milli- 4881c96f86eeSWolfgang Denk seconds, minimum value is 1000 = 1 second). Defines 4882c96f86eeSWolfgang Denk when a packet is considered to be lost so it has to 4883c96f86eeSWolfgang Denk be retransmitted. The default is 5000 = 5 seconds. 4884c96f86eeSWolfgang Denk Lowering this value may make downloads succeed 4885c96f86eeSWolfgang Denk faster in networks with high packet loss rates or 4886c96f86eeSWolfgang Denk with unreliable TFTP servers. 4887c96f86eeSWolfgang Denk 4888a3d991bdSwdenk vlan - When set to a value < 4095 the traffic over 488911ccc33fSMarcel Ziswiler Ethernet is encapsulated/received over 802.1q 4890a3d991bdSwdenk VLAN tagged frames. 4891c609719bSwdenk 4892dc0b7b0eSJason HobbsThe following image location variables contain the location of images 4893dc0b7b0eSJason Hobbsused in booting. The "Image" column gives the role of the image and is 4894dc0b7b0eSJason Hobbsnot an environment variable name. The other columns are environment 4895dc0b7b0eSJason Hobbsvariable names. "File Name" gives the name of the file on a TFTP 4896dc0b7b0eSJason Hobbsserver, "RAM Address" gives the location in RAM the image will be 4897dc0b7b0eSJason Hobbsloaded to, and "Flash Location" gives the image's address in NOR 4898dc0b7b0eSJason Hobbsflash or offset in NAND flash. 4899dc0b7b0eSJason Hobbs 4900dc0b7b0eSJason Hobbs*Note* - these variables don't have to be defined for all boards, some 4901dc0b7b0eSJason Hobbsboards currenlty use other variables for these purposes, and some 4902dc0b7b0eSJason Hobbsboards use these variables for other purposes. 4903dc0b7b0eSJason Hobbs 4904dc0b7b0eSJason HobbsImage File Name RAM Address Flash Location 4905dc0b7b0eSJason Hobbs----- --------- ----------- -------------- 4906dc0b7b0eSJason Hobbsu-boot u-boot u-boot_addr_r u-boot_addr 4907dc0b7b0eSJason HobbsLinux kernel bootfile kernel_addr_r kernel_addr 4908dc0b7b0eSJason Hobbsdevice tree blob fdtfile fdt_addr_r fdt_addr 4909dc0b7b0eSJason Hobbsramdisk ramdiskfile ramdisk_addr_r ramdisk_addr 4910dc0b7b0eSJason Hobbs 4911c609719bSwdenkThe following environment variables may be used and automatically 4912c609719bSwdenkupdated by the network boot commands ("bootp" and "rarpboot"), 4913c609719bSwdenkdepending the information provided by your boot server: 4914c609719bSwdenk 4915c609719bSwdenk bootfile - see above 4916c609719bSwdenk dnsip - IP address of your Domain Name Server 4917fe389a82Sstroese dnsip2 - IP address of your secondary Domain Name Server 4918c609719bSwdenk gatewayip - IP address of the Gateway (Router) to use 4919c609719bSwdenk hostname - Target hostname 4920c609719bSwdenk ipaddr - see above 4921c609719bSwdenk netmask - Subnet Mask 4922c609719bSwdenk rootpath - Pathname of the root filesystem on the NFS server 4923c609719bSwdenk serverip - see above 4924c609719bSwdenk 4925c609719bSwdenk 4926c609719bSwdenkThere are two special Environment Variables: 4927c609719bSwdenk 4928c609719bSwdenk serial# - contains hardware identification information such 4929c609719bSwdenk as type string and/or serial number 4930c609719bSwdenk ethaddr - Ethernet address 4931c609719bSwdenk 4932c609719bSwdenkThese variables can be set only once (usually during manufacturing of 4933c609719bSwdenkthe board). U-Boot refuses to delete or overwrite these variables 4934c609719bSwdenkonce they have been set once. 4935c609719bSwdenk 4936c609719bSwdenk 4937c1551ea8SstroeseFurther special Environment Variables: 4938c1551ea8Sstroese 4939c1551ea8Sstroese ver - Contains the U-Boot version string as printed 4940c1551ea8Sstroese with the "version" command. This variable is 4941c1551ea8Sstroese readonly (see CONFIG_VERSION_VARIABLE). 4942c1551ea8Sstroese 4943c1551ea8Sstroese 4944c609719bSwdenkPlease note that changes to some configuration parameters may take 4945c609719bSwdenkonly effect after the next boot (yes, that's just like Windoze :-). 4946c609719bSwdenk 4947c609719bSwdenk 4948170ab110SJoe HershbergerCallback functions for environment variables: 4949170ab110SJoe Hershberger--------------------------------------------- 4950170ab110SJoe Hershberger 4951170ab110SJoe HershbergerFor some environment variables, the behavior of u-boot needs to change 4952170ab110SJoe Hershbergerwhen their values are changed. This functionailty allows functions to 4953170ab110SJoe Hershbergerbe associated with arbitrary variables. On creation, overwrite, or 4954170ab110SJoe Hershbergerdeletion, the callback will provide the opportunity for some side 4955170ab110SJoe Hershbergereffect to happen or for the change to be rejected. 4956170ab110SJoe Hershberger 4957170ab110SJoe HershbergerThe callbacks are named and associated with a function using the 4958170ab110SJoe HershbergerU_BOOT_ENV_CALLBACK macro in your board or driver code. 4959170ab110SJoe Hershberger 4960170ab110SJoe HershbergerThese callbacks are associated with variables in one of two ways. The 4961170ab110SJoe Hershbergerstatic list can be added to by defining CONFIG_ENV_CALLBACK_LIST_STATIC 4962170ab110SJoe Hershbergerin the board configuration to a string that defines a list of 4963170ab110SJoe Hershbergerassociations. The list must be in the following format: 4964170ab110SJoe Hershberger 4965170ab110SJoe Hershberger entry = variable_name[:callback_name] 4966170ab110SJoe Hershberger list = entry[,list] 4967170ab110SJoe Hershberger 4968170ab110SJoe HershbergerIf the callback name is not specified, then the callback is deleted. 4969170ab110SJoe HershbergerSpaces are also allowed anywhere in the list. 4970170ab110SJoe Hershberger 4971170ab110SJoe HershbergerCallbacks can also be associated by defining the ".callbacks" variable 4972170ab110SJoe Hershbergerwith the same list format above. Any association in ".callbacks" will 4973170ab110SJoe Hershbergeroverride any association in the static list. You can define 4974170ab110SJoe HershbergerCONFIG_ENV_CALLBACK_LIST_DEFAULT to a list (string) to define the 4975170ab110SJoe Hershberger".callbacks" envirnoment variable in the default or embedded environment. 4976170ab110SJoe Hershberger 4977170ab110SJoe Hershberger 4978f07771ccSwdenkCommand Line Parsing: 4979f07771ccSwdenk===================== 4980f07771ccSwdenk 4981f07771ccSwdenkThere are two different command line parsers available with U-Boot: 49827152b1d0Swdenkthe old "simple" one, and the much more powerful "hush" shell: 4983f07771ccSwdenk 4984f07771ccSwdenkOld, simple command line parser: 4985f07771ccSwdenk-------------------------------- 4986f07771ccSwdenk 4987f07771ccSwdenk- supports environment variables (through setenv / saveenv commands) 4988f07771ccSwdenk- several commands on one line, separated by ';' 4989fe126d8bSWolfgang Denk- variable substitution using "... ${name} ..." syntax 4990f07771ccSwdenk- special characters ('$', ';') can be escaped by prefixing with '\', 4991f07771ccSwdenk for example: 4992fe126d8bSWolfgang Denk setenv bootcmd bootm \${address} 4993f07771ccSwdenk- You can also escape text by enclosing in single apostrophes, for example: 4994f07771ccSwdenk setenv addip 'setenv bootargs $bootargs ip=$ipaddr:$serverip:$gatewayip:$netmask:$hostname::off' 4995f07771ccSwdenk 4996f07771ccSwdenkHush shell: 4997f07771ccSwdenk----------- 4998f07771ccSwdenk 4999f07771ccSwdenk- similar to Bourne shell, with control structures like 5000f07771ccSwdenk if...then...else...fi, for...do...done; while...do...done, 5001f07771ccSwdenk until...do...done, ... 5002f07771ccSwdenk- supports environment ("global") variables (through setenv / saveenv 5003f07771ccSwdenk commands) and local shell variables (through standard shell syntax 5004f07771ccSwdenk "name=value"); only environment variables can be used with "run" 5005f07771ccSwdenk command 5006f07771ccSwdenk 5007f07771ccSwdenkGeneral rules: 5008f07771ccSwdenk-------------- 5009f07771ccSwdenk 5010f07771ccSwdenk(1) If a command line (or an environment variable executed by a "run" 5011f07771ccSwdenk command) contains several commands separated by semicolon, and 5012f07771ccSwdenk one of these commands fails, then the remaining commands will be 5013f07771ccSwdenk executed anyway. 5014f07771ccSwdenk 5015f07771ccSwdenk(2) If you execute several variables with one call to run (i. e. 501611ccc33fSMarcel Ziswiler calling run with a list of variables as arguments), any failing 5017f07771ccSwdenk command will cause "run" to terminate, i. e. the remaining 5018f07771ccSwdenk variables are not executed. 5019f07771ccSwdenk 5020c609719bSwdenkNote for Redundant Ethernet Interfaces: 5021c609719bSwdenk======================================= 5022c609719bSwdenk 502311ccc33fSMarcel ZiswilerSome boards come with redundant Ethernet interfaces; U-Boot supports 5024c609719bSwdenksuch configurations and is capable of automatic selection of a 50257152b1d0Swdenk"working" interface when needed. MAC assignment works as follows: 5026c609719bSwdenk 5027c609719bSwdenkNetwork interfaces are numbered eth0, eth1, eth2, ... Corresponding 5028c609719bSwdenkMAC addresses can be stored in the environment as "ethaddr" (=>eth0), 5029c609719bSwdenk"eth1addr" (=>eth1), "eth2addr", ... 5030c609719bSwdenk 5031c609719bSwdenkIf the network interface stores some valid MAC address (for instance 5032c609719bSwdenkin SROM), this is used as default address if there is NO correspon- 5033c609719bSwdenkding setting in the environment; if the corresponding environment 5034c609719bSwdenkvariable is set, this overrides the settings in the card; that means: 5035c609719bSwdenk 5036c609719bSwdenko If the SROM has a valid MAC address, and there is no address in the 5037c609719bSwdenk environment, the SROM's address is used. 5038c609719bSwdenk 5039c609719bSwdenko If there is no valid address in the SROM, and a definition in the 5040c609719bSwdenk environment exists, then the value from the environment variable is 5041c609719bSwdenk used. 5042c609719bSwdenk 5043c609719bSwdenko If both the SROM and the environment contain a MAC address, and 5044c609719bSwdenk both addresses are the same, this MAC address is used. 5045c609719bSwdenk 5046c609719bSwdenko If both the SROM and the environment contain a MAC address, and the 5047c609719bSwdenk addresses differ, the value from the environment is used and a 5048c609719bSwdenk warning is printed. 5049c609719bSwdenk 5050c609719bSwdenko If neither SROM nor the environment contain a MAC address, an error 5051c609719bSwdenk is raised. 5052c609719bSwdenk 5053ecee9324SBen WarrenIf Ethernet drivers implement the 'write_hwaddr' function, valid MAC addresses 5054ecee9324SBen Warrenwill be programmed into hardware as part of the initialization process. This 5055ecee9324SBen Warrenmay be skipped by setting the appropriate 'ethmacskip' environment variable. 5056ecee9324SBen WarrenThe naming convention is as follows: 5057ecee9324SBen Warren"ethmacskip" (=>eth0), "eth1macskip" (=>eth1) etc. 5058c609719bSwdenk 5059c609719bSwdenkImage Formats: 5060c609719bSwdenk============== 5061c609719bSwdenk 50623310c549SMarian BalakowiczU-Boot is capable of booting (and performing other auxiliary operations on) 50633310c549SMarian Balakowiczimages in two formats: 50643310c549SMarian Balakowicz 50653310c549SMarian BalakowiczNew uImage format (FIT) 50663310c549SMarian Balakowicz----------------------- 50673310c549SMarian Balakowicz 50683310c549SMarian BalakowiczFlexible and powerful format based on Flattened Image Tree -- FIT (similar 50693310c549SMarian Balakowiczto Flattened Device Tree). It allows the use of images with multiple 50703310c549SMarian Balakowiczcomponents (several kernels, ramdisks, etc.), with contents protected by 50713310c549SMarian BalakowiczSHA1, MD5 or CRC32. More details are found in the doc/uImage.FIT directory. 50723310c549SMarian Balakowicz 50733310c549SMarian Balakowicz 50743310c549SMarian BalakowiczOld uImage format 50753310c549SMarian Balakowicz----------------- 50763310c549SMarian Balakowicz 50773310c549SMarian BalakowiczOld image format is based on binary files which can be basically anything, 50783310c549SMarian Balakowiczpreceded by a special header; see the definitions in include/image.h for 50793310c549SMarian Balakowiczdetails; basically, the header defines the following image properties: 5080c609719bSwdenk 5081c609719bSwdenk* Target Operating System (Provisions for OpenBSD, NetBSD, FreeBSD, 5082c609719bSwdenk 4.4BSD, Linux, SVR4, Esix, Solaris, Irix, SCO, Dell, NCR, VxWorks, 5083f5ed9e39SPeter Tyser LynxOS, pSOS, QNX, RTEMS, INTEGRITY; 5084f5ed9e39SPeter Tyser Currently supported: Linux, NetBSD, VxWorks, QNX, RTEMS, LynxOS, 5085f5ed9e39SPeter Tyser INTEGRITY). 50867b64fef3SWolfgang Denk* Target CPU Architecture (Provisions for Alpha, ARM, AVR32, Intel x86, 5087afc1ce82SMacpaul Lin IA64, MIPS, NDS32, Nios II, PowerPC, IBM S390, SuperH, Sparc, Sparc 64 Bit; 5088afc1ce82SMacpaul Lin Currently supported: ARM, AVR32, Intel x86, MIPS, NDS32, Nios II, PowerPC). 5089c29fdfc1Swdenk* Compression Type (uncompressed, gzip, bzip2) 5090c609719bSwdenk* Load Address 5091c609719bSwdenk* Entry Point 5092c609719bSwdenk* Image Name 5093c609719bSwdenk* Image Timestamp 5094c609719bSwdenk 5095c609719bSwdenkThe header is marked by a special Magic Number, and both the header 5096c609719bSwdenkand the data portions of the image are secured against corruption by 5097c609719bSwdenkCRC32 checksums. 5098c609719bSwdenk 5099c609719bSwdenk 5100c609719bSwdenkLinux Support: 5101c609719bSwdenk============== 5102c609719bSwdenk 5103c609719bSwdenkAlthough U-Boot should support any OS or standalone application 51047152b1d0Swdenkeasily, the main focus has always been on Linux during the design of 5105c609719bSwdenkU-Boot. 5106c609719bSwdenk 5107c609719bSwdenkU-Boot includes many features that so far have been part of some 5108c609719bSwdenkspecial "boot loader" code within the Linux kernel. Also, any 5109c609719bSwdenk"initrd" images to be used are no longer part of one big Linux image; 5110c609719bSwdenkinstead, kernel and "initrd" are separate images. This implementation 51117152b1d0Swdenkserves several purposes: 5112c609719bSwdenk 5113c609719bSwdenk- the same features can be used for other OS or standalone 5114c609719bSwdenk applications (for instance: using compressed images to reduce the 5115c609719bSwdenk Flash memory footprint) 5116c609719bSwdenk 5117c609719bSwdenk- it becomes much easier to port new Linux kernel versions because 51187152b1d0Swdenk lots of low-level, hardware dependent stuff are done by U-Boot 5119c609719bSwdenk 5120c609719bSwdenk- the same Linux kernel image can now be used with different "initrd" 5121c609719bSwdenk images; of course this also means that different kernel images can 5122c609719bSwdenk be run with the same "initrd". This makes testing easier (you don't 5123c609719bSwdenk have to build a new "zImage.initrd" Linux image when you just 5124c609719bSwdenk change a file in your "initrd"). Also, a field-upgrade of the 5125c609719bSwdenk software is easier now. 5126c609719bSwdenk 5127c609719bSwdenk 5128c609719bSwdenkLinux HOWTO: 5129c609719bSwdenk============ 5130c609719bSwdenk 5131c609719bSwdenkPorting Linux to U-Boot based systems: 5132c609719bSwdenk--------------------------------------- 5133c609719bSwdenk 5134c609719bSwdenkU-Boot cannot save you from doing all the necessary modifications to 5135c609719bSwdenkconfigure the Linux device drivers for use with your target hardware 5136c609719bSwdenk(no, we don't intend to provide a full virtual machine interface to 5137c609719bSwdenkLinux :-). 5138c609719bSwdenk 5139a47a12beSStefan RoeseBut now you can ignore ALL boot loader code (in arch/powerpc/mbxboot). 5140c609719bSwdenk 5141c609719bSwdenkJust make sure your machine specific header file (for instance 5142c609719bSwdenkinclude/asm-ppc/tqm8xx.h) includes the same definition of the Board 51431dc30693SMarkus HeidelbergInformation structure as we define in include/asm-<arch>/u-boot.h, 51441dc30693SMarkus Heidelbergand make sure that your definition of IMAP_ADDR uses the same value 51456d0f6bcfSJean-Christophe PLAGNIOL-VILLARDas your U-Boot configuration in CONFIG_SYS_IMMR. 5146c609719bSwdenk 5147c609719bSwdenk 5148c609719bSwdenkConfiguring the Linux kernel: 5149c609719bSwdenk----------------------------- 5150c609719bSwdenk 5151c609719bSwdenkNo specific requirements for U-Boot. Make sure you have some root 5152c609719bSwdenkdevice (initial ramdisk, NFS) for your target system. 5153c609719bSwdenk 5154c609719bSwdenk 5155c609719bSwdenkBuilding a Linux Image: 5156c609719bSwdenk----------------------- 5157c609719bSwdenk 515824ee89b9SwdenkWith U-Boot, "normal" build targets like "zImage" or "bzImage" are 515924ee89b9Swdenknot used. If you use recent kernel source, a new build target 516024ee89b9Swdenk"uImage" will exist which automatically builds an image usable by 516124ee89b9SwdenkU-Boot. Most older kernels also have support for a "pImage" target, 516224ee89b9Swdenkwhich was introduced for our predecessor project PPCBoot and uses a 516324ee89b9Swdenk100% compatible format. 5164c609719bSwdenk 5165c609719bSwdenkExample: 5166c609719bSwdenk 5167c609719bSwdenk make TQM850L_config 5168c609719bSwdenk make oldconfig 5169c609719bSwdenk make dep 517024ee89b9Swdenk make uImage 5171c609719bSwdenk 517224ee89b9SwdenkThe "uImage" build target uses a special tool (in 'tools/mkimage') to 517324ee89b9Swdenkencapsulate a compressed Linux kernel image with header information, 517424ee89b9SwdenkCRC32 checksum etc. for use with U-Boot. This is what we are doing: 5175c609719bSwdenk 517624ee89b9Swdenk* build a standard "vmlinux" kernel image (in ELF binary format): 517724ee89b9Swdenk 517824ee89b9Swdenk* convert the kernel into a raw binary image: 517924ee89b9Swdenk 518024ee89b9Swdenk ${CROSS_COMPILE}-objcopy -O binary \ 518124ee89b9Swdenk -R .note -R .comment \ 518224ee89b9Swdenk -S vmlinux linux.bin 518324ee89b9Swdenk 518424ee89b9Swdenk* compress the binary image: 518524ee89b9Swdenk 518624ee89b9Swdenk gzip -9 linux.bin 518724ee89b9Swdenk 518824ee89b9Swdenk* package compressed binary image for U-Boot: 518924ee89b9Swdenk 519024ee89b9Swdenk mkimage -A ppc -O linux -T kernel -C gzip \ 519124ee89b9Swdenk -a 0 -e 0 -n "Linux Kernel Image" \ 519224ee89b9Swdenk -d linux.bin.gz uImage 519324ee89b9Swdenk 519424ee89b9Swdenk 519524ee89b9SwdenkThe "mkimage" tool can also be used to create ramdisk images for use 519624ee89b9Swdenkwith U-Boot, either separated from the Linux kernel image, or 519724ee89b9Swdenkcombined into one file. "mkimage" encapsulates the images with a 64 519824ee89b9Swdenkbyte header containing information about target architecture, 519924ee89b9Swdenkoperating system, image type, compression method, entry points, time 520024ee89b9Swdenkstamp, CRC32 checksums, etc. 520124ee89b9Swdenk 520224ee89b9Swdenk"mkimage" can be called in two ways: to verify existing images and 520324ee89b9Swdenkprint the header information, or to build new images. 5204c609719bSwdenk 5205c609719bSwdenkIn the first form (with "-l" option) mkimage lists the information 5206c609719bSwdenkcontained in the header of an existing U-Boot image; this includes 5207c609719bSwdenkchecksum verification: 5208c609719bSwdenk 5209c609719bSwdenk tools/mkimage -l image 5210c609719bSwdenk -l ==> list image header information 5211c609719bSwdenk 5212c609719bSwdenkThe second form (with "-d" option) is used to build a U-Boot image 5213c609719bSwdenkfrom a "data file" which is used as image payload: 5214c609719bSwdenk 5215c609719bSwdenk tools/mkimage -A arch -O os -T type -C comp -a addr -e ep \ 5216c609719bSwdenk -n name -d data_file image 5217c609719bSwdenk -A ==> set architecture to 'arch' 5218c609719bSwdenk -O ==> set operating system to 'os' 5219c609719bSwdenk -T ==> set image type to 'type' 5220c609719bSwdenk -C ==> set compression type 'comp' 5221c609719bSwdenk -a ==> set load address to 'addr' (hex) 5222c609719bSwdenk -e ==> set entry point to 'ep' (hex) 5223c609719bSwdenk -n ==> set image name to 'name' 5224c609719bSwdenk -d ==> use image data from 'datafile' 5225c609719bSwdenk 522669459791SwdenkRight now, all Linux kernels for PowerPC systems use the same load 522769459791Swdenkaddress (0x00000000), but the entry point address depends on the 522869459791Swdenkkernel version: 5229c609719bSwdenk 5230c609719bSwdenk- 2.2.x kernels have the entry point at 0x0000000C, 523124ee89b9Swdenk- 2.3.x and later kernels have the entry point at 0x00000000. 5232c609719bSwdenk 5233c609719bSwdenkSo a typical call to build a U-Boot image would read: 5234c609719bSwdenk 523524ee89b9Swdenk -> tools/mkimage -n '2.4.4 kernel for TQM850L' \ 523624ee89b9Swdenk > -A ppc -O linux -T kernel -C gzip -a 0 -e 0 \ 5237a47a12beSStefan Roese > -d /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux.gz \ 523824ee89b9Swdenk > examples/uImage.TQM850L 523924ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5240c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5241c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5242c609719bSwdenk Data Size: 335725 Bytes = 327.86 kB = 0.32 MB 5243c609719bSwdenk Load Address: 0x00000000 524424ee89b9Swdenk Entry Point: 0x00000000 5245c609719bSwdenk 5246c609719bSwdenkTo verify the contents of the image (or check for corruption): 5247c609719bSwdenk 524824ee89b9Swdenk -> tools/mkimage -l examples/uImage.TQM850L 524924ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5250c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5251c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5252c609719bSwdenk Data Size: 335725 Bytes = 327.86 kB = 0.32 MB 5253c609719bSwdenk Load Address: 0x00000000 525424ee89b9Swdenk Entry Point: 0x00000000 5255c609719bSwdenk 5256c609719bSwdenkNOTE: for embedded systems where boot time is critical you can trade 5257c609719bSwdenkspeed for memory and install an UNCOMPRESSED image instead: this 5258c609719bSwdenkneeds more space in Flash, but boots much faster since it does not 5259c609719bSwdenkneed to be uncompressed: 5260c609719bSwdenk 5261a47a12beSStefan Roese -> gunzip /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux.gz 526224ee89b9Swdenk -> tools/mkimage -n '2.4.4 kernel for TQM850L' \ 526324ee89b9Swdenk > -A ppc -O linux -T kernel -C none -a 0 -e 0 \ 5264a47a12beSStefan Roese > -d /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux \ 526524ee89b9Swdenk > examples/uImage.TQM850L-uncompressed 526624ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5267c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5268c609719bSwdenk Image Type: PowerPC Linux Kernel Image (uncompressed) 5269c609719bSwdenk Data Size: 792160 Bytes = 773.59 kB = 0.76 MB 5270c609719bSwdenk Load Address: 0x00000000 527124ee89b9Swdenk Entry Point: 0x00000000 5272c609719bSwdenk 5273c609719bSwdenk 5274c609719bSwdenkSimilar you can build U-Boot images from a 'ramdisk.image.gz' file 5275c609719bSwdenkwhen your kernel is intended to use an initial ramdisk: 5276c609719bSwdenk 5277c609719bSwdenk -> tools/mkimage -n 'Simple Ramdisk Image' \ 5278c609719bSwdenk > -A ppc -O linux -T ramdisk -C gzip \ 5279c609719bSwdenk > -d /LinuxPPC/images/SIMPLE-ramdisk.image.gz examples/simple-initrd 5280c609719bSwdenk Image Name: Simple Ramdisk Image 5281c609719bSwdenk Created: Wed Jan 12 14:01:50 2000 5282c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5283c609719bSwdenk Data Size: 566530 Bytes = 553.25 kB = 0.54 MB 5284c609719bSwdenk Load Address: 0x00000000 5285c609719bSwdenk Entry Point: 0x00000000 5286c609719bSwdenk 5287a804b5ceSGuilherme Maciel FerreiraThe "dumpimage" is a tool to disassemble images built by mkimage. Its "-i" 5288a804b5ceSGuilherme Maciel Ferreiraoption performs the converse operation of the mkimage's second form (the "-d" 5289a804b5ceSGuilherme Maciel Ferreiraoption). Given an image built by mkimage, the dumpimage extracts a "data file" 5290a804b5ceSGuilherme Maciel Ferreirafrom the image: 5291a804b5ceSGuilherme Maciel Ferreira 5292a804b5ceSGuilherme Maciel Ferreira tools/dumpimage -i image -p position data_file 5293a804b5ceSGuilherme Maciel Ferreira -i ==> extract from the 'image' a specific 'data_file', \ 5294a804b5ceSGuilherme Maciel Ferreira indexed by 'position' 5295a804b5ceSGuilherme Maciel Ferreira 5296c609719bSwdenk 5297c609719bSwdenkInstalling a Linux Image: 5298c609719bSwdenk------------------------- 5299c609719bSwdenk 5300c609719bSwdenkTo downloading a U-Boot image over the serial (console) interface, 5301c609719bSwdenkyou must convert the image to S-Record format: 5302c609719bSwdenk 5303c609719bSwdenk objcopy -I binary -O srec examples/image examples/image.srec 5304c609719bSwdenk 5305c609719bSwdenkThe 'objcopy' does not understand the information in the U-Boot 5306c609719bSwdenkimage header, so the resulting S-Record file will be relative to 5307c609719bSwdenkaddress 0x00000000. To load it to a given address, you need to 5308c609719bSwdenkspecify the target address as 'offset' parameter with the 'loads' 5309c609719bSwdenkcommand. 5310c609719bSwdenk 5311c609719bSwdenkExample: install the image to address 0x40100000 (which on the 5312c609719bSwdenkTQM8xxL is in the first Flash bank): 5313c609719bSwdenk 5314c609719bSwdenk => erase 40100000 401FFFFF 5315c609719bSwdenk 5316c609719bSwdenk .......... done 5317c609719bSwdenk Erased 8 sectors 5318c609719bSwdenk 5319c609719bSwdenk => loads 40100000 5320c609719bSwdenk ## Ready for S-Record download ... 5321c609719bSwdenk ~>examples/image.srec 5322c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 12 13 ... 5323c609719bSwdenk ... 5324c609719bSwdenk 15989 15990 15991 15992 5325c609719bSwdenk [file transfer complete] 5326c609719bSwdenk [connected] 5327c609719bSwdenk ## Start Addr = 0x00000000 5328c609719bSwdenk 5329c609719bSwdenk 5330c609719bSwdenkYou can check the success of the download using the 'iminfo' command; 5331c609719bSwdenkthis includes a checksum verification so you can be sure no data 5332c609719bSwdenkcorruption happened: 5333c609719bSwdenk 5334c609719bSwdenk => imi 40100000 5335c609719bSwdenk 5336c609719bSwdenk ## Checking Image at 40100000 ... 5337c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5338c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5339c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5340c609719bSwdenk Load Address: 00000000 5341c609719bSwdenk Entry Point: 0000000c 5342c609719bSwdenk Verifying Checksum ... OK 5343c609719bSwdenk 5344c609719bSwdenk 5345c609719bSwdenkBoot Linux: 5346c609719bSwdenk----------- 5347c609719bSwdenk 5348c609719bSwdenkThe "bootm" command is used to boot an application that is stored in 5349c609719bSwdenkmemory (RAM or Flash). In case of a Linux kernel image, the contents 5350c609719bSwdenkof the "bootargs" environment variable is passed to the kernel as 5351c609719bSwdenkparameters. You can check and modify this variable using the 5352c609719bSwdenk"printenv" and "setenv" commands: 5353c609719bSwdenk 5354c609719bSwdenk 5355c609719bSwdenk => printenv bootargs 5356c609719bSwdenk bootargs=root=/dev/ram 5357c609719bSwdenk 5358c609719bSwdenk => setenv bootargs root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5359c609719bSwdenk 5360c609719bSwdenk => printenv bootargs 5361c609719bSwdenk bootargs=root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5362c609719bSwdenk 5363c609719bSwdenk => bootm 40020000 5364c609719bSwdenk ## Booting Linux kernel at 40020000 ... 5365c609719bSwdenk Image Name: 2.2.13 for NFS on TQM850L 5366c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5367c609719bSwdenk Data Size: 381681 Bytes = 372 kB = 0 MB 5368c609719bSwdenk Load Address: 00000000 5369c609719bSwdenk Entry Point: 0000000c 5370c609719bSwdenk Verifying Checksum ... OK 5371c609719bSwdenk Uncompressing Kernel Image ... OK 5372c609719bSwdenk 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 5373c609719bSwdenk Boot arguments: root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5374c609719bSwdenk time_init: decrementer frequency = 187500000/60 5375c609719bSwdenk Calibrating delay loop... 49.77 BogoMIPS 5376c609719bSwdenk Memory: 15208k available (700k kernel code, 444k data, 32k init) [c0000000,c1000000] 5377c609719bSwdenk ... 5378c609719bSwdenk 537911ccc33fSMarcel ZiswilerIf you want to boot a Linux kernel with initial RAM disk, you pass 53807152b1d0Swdenkthe memory addresses of both the kernel and the initrd image (PPBCOOT 5381c609719bSwdenkformat!) to the "bootm" command: 5382c609719bSwdenk 5383c609719bSwdenk => imi 40100000 40200000 5384c609719bSwdenk 5385c609719bSwdenk ## Checking Image at 40100000 ... 5386c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5387c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5388c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5389c609719bSwdenk Load Address: 00000000 5390c609719bSwdenk Entry Point: 0000000c 5391c609719bSwdenk Verifying Checksum ... OK 5392c609719bSwdenk 5393c609719bSwdenk ## Checking Image at 40200000 ... 5394c609719bSwdenk Image Name: Simple Ramdisk Image 5395c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5396c609719bSwdenk Data Size: 566530 Bytes = 553 kB = 0 MB 5397c609719bSwdenk Load Address: 00000000 5398c609719bSwdenk Entry Point: 00000000 5399c609719bSwdenk Verifying Checksum ... OK 5400c609719bSwdenk 5401c609719bSwdenk => bootm 40100000 40200000 5402c609719bSwdenk ## Booting Linux kernel at 40100000 ... 5403c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5404c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5405c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5406c609719bSwdenk Load Address: 00000000 5407c609719bSwdenk Entry Point: 0000000c 5408c609719bSwdenk Verifying Checksum ... OK 5409c609719bSwdenk Uncompressing Kernel Image ... OK 5410c609719bSwdenk ## Loading RAMDisk Image at 40200000 ... 5411c609719bSwdenk Image Name: Simple Ramdisk Image 5412c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5413c609719bSwdenk Data Size: 566530 Bytes = 553 kB = 0 MB 5414c609719bSwdenk Load Address: 00000000 5415c609719bSwdenk Entry Point: 00000000 5416c609719bSwdenk Verifying Checksum ... OK 5417c609719bSwdenk Loading Ramdisk ... OK 5418c609719bSwdenk 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 5419c609719bSwdenk Boot arguments: root=/dev/ram 5420c609719bSwdenk time_init: decrementer frequency = 187500000/60 5421c609719bSwdenk Calibrating delay loop... 49.77 BogoMIPS 5422c609719bSwdenk ... 5423c609719bSwdenk RAMDISK: Compressed image found at block 0 5424c609719bSwdenk VFS: Mounted root (ext2 filesystem). 5425c609719bSwdenk 5426c609719bSwdenk bash# 5427c609719bSwdenk 54280267768eSMatthew McClintockBoot Linux and pass a flat device tree: 54290267768eSMatthew McClintock----------- 54300267768eSMatthew McClintock 54310267768eSMatthew McClintockFirst, U-Boot must be compiled with the appropriate defines. See the section 54320267768eSMatthew McClintocktitled "Linux Kernel Interface" above for a more in depth explanation. The 54330267768eSMatthew McClintockfollowing is an example of how to start a kernel and pass an updated 54340267768eSMatthew McClintockflat device tree: 54350267768eSMatthew McClintock 54360267768eSMatthew McClintock=> print oftaddr 54370267768eSMatthew McClintockoftaddr=0x300000 54380267768eSMatthew McClintock=> print oft 54390267768eSMatthew McClintockoft=oftrees/mpc8540ads.dtb 54400267768eSMatthew McClintock=> tftp $oftaddr $oft 54410267768eSMatthew McClintockSpeed: 1000, full duplex 54420267768eSMatthew McClintockUsing TSEC0 device 54430267768eSMatthew McClintockTFTP from server 192.168.1.1; our IP address is 192.168.1.101 54440267768eSMatthew McClintockFilename 'oftrees/mpc8540ads.dtb'. 54450267768eSMatthew McClintockLoad address: 0x300000 54460267768eSMatthew McClintockLoading: # 54470267768eSMatthew McClintockdone 54480267768eSMatthew McClintockBytes transferred = 4106 (100a hex) 54490267768eSMatthew McClintock=> tftp $loadaddr $bootfile 54500267768eSMatthew McClintockSpeed: 1000, full duplex 54510267768eSMatthew McClintockUsing TSEC0 device 54520267768eSMatthew McClintockTFTP from server 192.168.1.1; our IP address is 192.168.1.2 54530267768eSMatthew McClintockFilename 'uImage'. 54540267768eSMatthew McClintockLoad address: 0x200000 54550267768eSMatthew McClintockLoading:############ 54560267768eSMatthew McClintockdone 54570267768eSMatthew McClintockBytes transferred = 1029407 (fb51f hex) 54580267768eSMatthew McClintock=> print loadaddr 54590267768eSMatthew McClintockloadaddr=200000 54600267768eSMatthew McClintock=> print oftaddr 54610267768eSMatthew McClintockoftaddr=0x300000 54620267768eSMatthew McClintock=> bootm $loadaddr - $oftaddr 54630267768eSMatthew McClintock## Booting image at 00200000 ... 54640267768eSMatthew McClintock Image Name: Linux-2.6.17-dirty 54650267768eSMatthew McClintock Image Type: PowerPC Linux Kernel Image (gzip compressed) 54660267768eSMatthew McClintock Data Size: 1029343 Bytes = 1005.2 kB 54670267768eSMatthew McClintock Load Address: 00000000 54680267768eSMatthew McClintock Entry Point: 00000000 54690267768eSMatthew McClintock Verifying Checksum ... OK 54700267768eSMatthew McClintock Uncompressing Kernel Image ... OK 54710267768eSMatthew McClintockBooting using flat device tree at 0x300000 54720267768eSMatthew McClintockUsing MPC85xx ADS machine description 54730267768eSMatthew McClintockMemory CAM mapping: CAM0=256Mb, CAM1=256Mb, CAM2=0Mb residual: 0Mb 54740267768eSMatthew McClintock[snip] 54750267768eSMatthew McClintock 54760267768eSMatthew McClintock 54776069ff26SwdenkMore About U-Boot Image Types: 54786069ff26Swdenk------------------------------ 54796069ff26Swdenk 54806069ff26SwdenkU-Boot supports the following image types: 54816069ff26Swdenk 54826069ff26Swdenk "Standalone Programs" are directly runnable in the environment 54836069ff26Swdenk provided by U-Boot; it is expected that (if they behave 54846069ff26Swdenk well) you can continue to work in U-Boot after return from 54856069ff26Swdenk the Standalone Program. 54866069ff26Swdenk "OS Kernel Images" are usually images of some Embedded OS which 54876069ff26Swdenk will take over control completely. Usually these programs 54886069ff26Swdenk will install their own set of exception handlers, device 54896069ff26Swdenk drivers, set up the MMU, etc. - this means, that you cannot 54906069ff26Swdenk expect to re-enter U-Boot except by resetting the CPU. 54916069ff26Swdenk "RAMDisk Images" are more or less just data blocks, and their 54926069ff26Swdenk parameters (address, size) are passed to an OS kernel that is 54936069ff26Swdenk being started. 54946069ff26Swdenk "Multi-File Images" contain several images, typically an OS 54956069ff26Swdenk (Linux) kernel image and one or more data images like 54966069ff26Swdenk RAMDisks. This construct is useful for instance when you want 54976069ff26Swdenk to boot over the network using BOOTP etc., where the boot 54986069ff26Swdenk server provides just a single image file, but you want to get 54996069ff26Swdenk for instance an OS kernel and a RAMDisk image. 55006069ff26Swdenk 55016069ff26Swdenk "Multi-File Images" start with a list of image sizes, each 55026069ff26Swdenk image size (in bytes) specified by an "uint32_t" in network 55036069ff26Swdenk byte order. This list is terminated by an "(uint32_t)0". 55046069ff26Swdenk Immediately after the terminating 0 follow the images, one by 55056069ff26Swdenk one, all aligned on "uint32_t" boundaries (size rounded up to 55066069ff26Swdenk a multiple of 4 bytes). 55076069ff26Swdenk 55086069ff26Swdenk "Firmware Images" are binary images containing firmware (like 55096069ff26Swdenk U-Boot or FPGA images) which usually will be programmed to 55106069ff26Swdenk flash memory. 55116069ff26Swdenk 55126069ff26Swdenk "Script files" are command sequences that will be executed by 55136069ff26Swdenk U-Boot's command interpreter; this feature is especially 55146069ff26Swdenk useful when you configure U-Boot to use a real shell (hush) 55156069ff26Swdenk as command interpreter. 55166069ff26Swdenk 551744f074c7SMarek VasutBooting the Linux zImage: 551844f074c7SMarek Vasut------------------------- 551944f074c7SMarek Vasut 552044f074c7SMarek VasutOn some platforms, it's possible to boot Linux zImage. This is done 552144f074c7SMarek Vasutusing the "bootz" command. The syntax of "bootz" command is the same 552244f074c7SMarek Vasutas the syntax of "bootm" command. 552344f074c7SMarek Vasut 55248ac28563STom RiniNote, defining the CONFIG_SUPPORT_RAW_INITRD allows user to supply 5525017e1f3fSMarek Vasutkernel with raw initrd images. The syntax is slightly different, the 5526017e1f3fSMarek Vasutaddress of the initrd must be augmented by it's size, in the following 5527017e1f3fSMarek Vasutformat: "<initrd addres>:<initrd size>". 5528017e1f3fSMarek Vasut 5529c609719bSwdenk 5530c609719bSwdenkStandalone HOWTO: 5531c609719bSwdenk================= 5532c609719bSwdenk 5533c609719bSwdenkOne of the features of U-Boot is that you can dynamically load and 5534c609719bSwdenkrun "standalone" applications, which can use some resources of 5535c609719bSwdenkU-Boot like console I/O functions or interrupt services. 5536c609719bSwdenk 5537c609719bSwdenkTwo simple examples are included with the sources: 5538c609719bSwdenk 5539c609719bSwdenk"Hello World" Demo: 5540c609719bSwdenk------------------- 5541c609719bSwdenk 5542c609719bSwdenk'examples/hello_world.c' contains a small "Hello World" Demo 5543c609719bSwdenkapplication; it is automatically compiled when you build U-Boot. 5544c609719bSwdenkIt's configured to run at address 0x00040004, so you can play with it 5545c609719bSwdenklike that: 5546c609719bSwdenk 5547c609719bSwdenk => loads 5548c609719bSwdenk ## Ready for S-Record download ... 5549c609719bSwdenk ~>examples/hello_world.srec 5550c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 ... 5551c609719bSwdenk [file transfer complete] 5552c609719bSwdenk [connected] 5553c609719bSwdenk ## Start Addr = 0x00040004 5554c609719bSwdenk 5555c609719bSwdenk => go 40004 Hello World! This is a test. 5556c609719bSwdenk ## Starting application at 0x00040004 ... 5557c609719bSwdenk Hello World 5558c609719bSwdenk argc = 7 5559c609719bSwdenk argv[0] = "40004" 5560c609719bSwdenk argv[1] = "Hello" 5561c609719bSwdenk argv[2] = "World!" 5562c609719bSwdenk argv[3] = "This" 5563c609719bSwdenk argv[4] = "is" 5564c609719bSwdenk argv[5] = "a" 5565c609719bSwdenk argv[6] = "test." 5566c609719bSwdenk argv[7] = "<NULL>" 5567c609719bSwdenk Hit any key to exit ... 5568c609719bSwdenk 5569c609719bSwdenk ## Application terminated, rc = 0x0 5570c609719bSwdenk 5571c609719bSwdenkAnother example, which demonstrates how to register a CPM interrupt 5572c609719bSwdenkhandler with the U-Boot code, can be found in 'examples/timer.c'. 5573c609719bSwdenkHere, a CPM timer is set up to generate an interrupt every second. 5574c609719bSwdenkThe interrupt service routine is trivial, just printing a '.' 5575c609719bSwdenkcharacter, but this is just a demo program. The application can be 5576c609719bSwdenkcontrolled by the following keys: 5577c609719bSwdenk 5578c609719bSwdenk ? - print current values og the CPM Timer registers 5579c609719bSwdenk b - enable interrupts and start timer 5580c609719bSwdenk e - stop timer and disable interrupts 5581c609719bSwdenk q - quit application 5582c609719bSwdenk 5583c609719bSwdenk => loads 5584c609719bSwdenk ## Ready for S-Record download ... 5585c609719bSwdenk ~>examples/timer.srec 5586c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 ... 5587c609719bSwdenk [file transfer complete] 5588c609719bSwdenk [connected] 5589c609719bSwdenk ## Start Addr = 0x00040004 5590c609719bSwdenk 5591c609719bSwdenk => go 40004 5592c609719bSwdenk ## Starting application at 0x00040004 ... 5593c609719bSwdenk TIMERS=0xfff00980 5594c609719bSwdenk Using timer 1 5595c609719bSwdenk tgcr @ 0xfff00980, tmr @ 0xfff00990, trr @ 0xfff00994, tcr @ 0xfff00998, tcn @ 0xfff0099c, ter @ 0xfff009b0 5596c609719bSwdenk 5597c609719bSwdenkHit 'b': 5598c609719bSwdenk [q, b, e, ?] Set interval 1000000 us 5599c609719bSwdenk Enabling timer 5600c609719bSwdenkHit '?': 5601c609719bSwdenk [q, b, e, ?] ........ 5602c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0xef6, ter=0x0 5603c609719bSwdenkHit '?': 5604c609719bSwdenk [q, b, e, ?] . 5605c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x2ad4, ter=0x0 5606c609719bSwdenkHit '?': 5607c609719bSwdenk [q, b, e, ?] . 5608c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x1efc, ter=0x0 5609c609719bSwdenkHit '?': 5610c609719bSwdenk [q, b, e, ?] . 5611c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x169d, ter=0x0 5612c609719bSwdenkHit 'e': 5613c609719bSwdenk [q, b, e, ?] ...Stopping timer 5614c609719bSwdenkHit 'q': 5615c609719bSwdenk [q, b, e, ?] ## Application terminated, rc = 0x0 5616c609719bSwdenk 5617c609719bSwdenk 561885ec0bccSwdenkMinicom warning: 561985ec0bccSwdenk================ 562085ec0bccSwdenk 56217152b1d0SwdenkOver time, many people have reported problems when trying to use the 562285ec0bccSwdenk"minicom" terminal emulation program for serial download. I (wd) 562385ec0bccSwdenkconsider minicom to be broken, and recommend not to use it. Under 5624f07771ccSwdenkUnix, I recommend to use C-Kermit for general purpose use (and 562585ec0bccSwdenkespecially for kermit binary protocol download ("loadb" command), and 5626e53515a2SKarl O. Pincuse "cu" for S-Record download ("loads" command). See 5627e53515a2SKarl O. Pinchttp://www.denx.de/wiki/view/DULG/SystemSetup#Section_4.3. 5628e53515a2SKarl O. Pincfor help with kermit. 5629e53515a2SKarl O. Pinc 563085ec0bccSwdenk 563152f52c14SwdenkNevertheless, if you absolutely want to use it try adding this 563252f52c14Swdenkconfiguration to your "File transfer protocols" section: 563352f52c14Swdenk 563452f52c14Swdenk Name Program Name U/D FullScr IO-Red. Multi 563552f52c14Swdenk X kermit /usr/bin/kermit -i -l %l -s Y U Y N N 563652f52c14Swdenk Y kermit /usr/bin/kermit -i -l %l -r N D Y N N 563752f52c14Swdenk 563852f52c14Swdenk 5639c609719bSwdenkNetBSD Notes: 5640c609719bSwdenk============= 5641c609719bSwdenk 5642c609719bSwdenkStarting at version 0.9.2, U-Boot supports NetBSD both as host 5643c609719bSwdenk(build U-Boot) and target system (boots NetBSD/mpc8xx). 5644c609719bSwdenk 5645c609719bSwdenkBuilding requires a cross environment; it is known to work on 5646c609719bSwdenkNetBSD/i386 with the cross-powerpc-netbsd-1.3 package (you will also 5647c609719bSwdenkneed gmake since the Makefiles are not compatible with BSD make). 5648c609719bSwdenkNote that the cross-powerpc package does not install include files; 5649c609719bSwdenkattempting to build U-Boot will fail because <machine/ansi.h> is 5650c609719bSwdenkmissing. This file has to be installed and patched manually: 5651c609719bSwdenk 5652c609719bSwdenk # cd /usr/pkg/cross/powerpc-netbsd/include 5653c609719bSwdenk # mkdir powerpc 5654c609719bSwdenk # ln -s powerpc machine 5655c609719bSwdenk # cp /usr/src/sys/arch/powerpc/include/ansi.h powerpc/ansi.h 5656c609719bSwdenk # ${EDIT} powerpc/ansi.h ## must remove __va_list, _BSD_VA_LIST 5657c609719bSwdenk 5658c609719bSwdenkNative builds *don't* work due to incompatibilities between native 5659c609719bSwdenkand U-Boot include files. 5660c609719bSwdenk 5661c609719bSwdenkBooting assumes that (the first part of) the image booted is a 5662c609719bSwdenkstage-2 loader which in turn loads and then invokes the kernel 5663c609719bSwdenkproper. Loader sources will eventually appear in the NetBSD source 5664c609719bSwdenktree (probably in sys/arc/mpc8xx/stand/u-boot_stage2/); in the 56652a8af187Swdenkmeantime, see ftp://ftp.denx.de/pub/u-boot/ppcboot_stage2.tar.gz 5666c609719bSwdenk 5667c609719bSwdenk 5668c609719bSwdenkImplementation Internals: 5669c609719bSwdenk========================= 5670c609719bSwdenk 5671c609719bSwdenkThe following is not intended to be a complete description of every 5672c609719bSwdenkimplementation detail. However, it should help to understand the 5673c609719bSwdenkinner workings of U-Boot and make it easier to port it to custom 5674c609719bSwdenkhardware. 5675c609719bSwdenk 5676c609719bSwdenk 5677c609719bSwdenkInitial Stack, Global Data: 5678c609719bSwdenk--------------------------- 5679c609719bSwdenk 5680c609719bSwdenkThe implementation of U-Boot is complicated by the fact that U-Boot 5681c609719bSwdenkstarts running out of ROM (flash memory), usually without access to 5682c609719bSwdenksystem RAM (because the memory controller is not initialized yet). 5683c609719bSwdenkThis means that we don't have writable Data or BSS segments, and BSS 5684c609719bSwdenkis not initialized as zero. To be able to get a C environment working 5685c609719bSwdenkat all, we have to allocate at least a minimal stack. Implementation 5686c609719bSwdenkoptions for this are defined and restricted by the CPU used: Some CPU 5687c609719bSwdenkmodels provide on-chip memory (like the IMMR area on MPC8xx and 5688c609719bSwdenkMPC826x processors), on others (parts of) the data cache can be 5689c609719bSwdenklocked as (mis-) used as memory, etc. 5690c609719bSwdenk 56917152b1d0Swdenk Chris Hallinan posted a good summary of these issues to the 56920668236bSWolfgang Denk U-Boot mailing list: 569343d9616cSwdenk 569443d9616cSwdenk Subject: RE: [U-Boot-Users] RE: More On Memory Bank x (nothingness)? 569543d9616cSwdenk From: "Chris Hallinan" <clh@net1plus.com> 569643d9616cSwdenk Date: Mon, 10 Feb 2003 16:43:46 -0500 (22:43 MET) 569743d9616cSwdenk ... 569843d9616cSwdenk 569943d9616cSwdenk Correct me if I'm wrong, folks, but the way I understand it 570043d9616cSwdenk is this: Using DCACHE as initial RAM for Stack, etc, does not 570143d9616cSwdenk require any physical RAM backing up the cache. The cleverness 570243d9616cSwdenk is that the cache is being used as a temporary supply of 570343d9616cSwdenk necessary storage before the SDRAM controller is setup. It's 570411ccc33fSMarcel Ziswiler beyond the scope of this list to explain the details, but you 570543d9616cSwdenk can see how this works by studying the cache architecture and 570643d9616cSwdenk operation in the architecture and processor-specific manuals. 570743d9616cSwdenk 570843d9616cSwdenk OCM is On Chip Memory, which I believe the 405GP has 4K. It 570943d9616cSwdenk is another option for the system designer to use as an 571011ccc33fSMarcel Ziswiler initial stack/RAM area prior to SDRAM being available. Either 571143d9616cSwdenk option should work for you. Using CS 4 should be fine if your 571243d9616cSwdenk board designers haven't used it for something that would 571343d9616cSwdenk cause you grief during the initial boot! It is frequently not 571443d9616cSwdenk used. 571543d9616cSwdenk 57166d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_RAM_ADDR should be somewhere that won't interfere 571743d9616cSwdenk with your processor/board/system design. The default value 571843d9616cSwdenk you will find in any recent u-boot distribution in 57198a316c9bSStefan Roese walnut.h should work for you. I'd set it to a value larger 572043d9616cSwdenk than your SDRAM module. If you have a 64MB SDRAM module, set 572143d9616cSwdenk it above 400_0000. Just make sure your board has no resources 572243d9616cSwdenk that are supposed to respond to that address! That code in 572343d9616cSwdenk start.S has been around a while and should work as is when 572443d9616cSwdenk you get the config right. 572543d9616cSwdenk 572643d9616cSwdenk -Chris Hallinan 572743d9616cSwdenk DS4.COM, Inc. 572843d9616cSwdenk 5729c609719bSwdenkIt is essential to remember this, since it has some impact on the C 5730c609719bSwdenkcode for the initialization procedures: 5731c609719bSwdenk 5732c609719bSwdenk* Initialized global data (data segment) is read-only. Do not attempt 5733c609719bSwdenk to write it. 5734c609719bSwdenk 573511ccc33fSMarcel Ziswiler* Do not use any uninitialized global data (or implicitely initialized 5736c609719bSwdenk as zero data - BSS segment) at all - this is undefined, initiali- 57377152b1d0Swdenk zation is performed later (when relocating to RAM). 5738c609719bSwdenk 5739c609719bSwdenk* Stack space is very limited. Avoid big data buffers or things like 5740c609719bSwdenk that. 5741c609719bSwdenk 5742c609719bSwdenkHaving only the stack as writable memory limits means we cannot use 5743c609719bSwdenknormal global data to share information beween the code. But it 5744c609719bSwdenkturned out that the implementation of U-Boot can be greatly 5745c609719bSwdenksimplified by making a global data structure (gd_t) available to all 5746c609719bSwdenkfunctions. We could pass a pointer to this data as argument to _all_ 5747c609719bSwdenkfunctions, but this would bloat the code. Instead we use a feature of 5748c609719bSwdenkthe GCC compiler (Global Register Variables) to share the data: we 5749c609719bSwdenkplace a pointer (gd) to the global data into a register which we 5750c609719bSwdenkreserve for this purpose. 5751c609719bSwdenk 57527152b1d0SwdenkWhen choosing a register for such a purpose we are restricted by the 5753c609719bSwdenkrelevant (E)ABI specifications for the current architecture, and by 5754c609719bSwdenkGCC's implementation. 5755c609719bSwdenk 5756c609719bSwdenkFor PowerPC, the following registers have specific use: 5757c609719bSwdenk R1: stack pointer 5758e7670f6cSWolfgang Denk R2: reserved for system use 5759c609719bSwdenk R3-R4: parameter passing and return values 5760c609719bSwdenk R5-R10: parameter passing 5761c609719bSwdenk R13: small data area pointer 5762c609719bSwdenk R30: GOT pointer 5763c609719bSwdenk R31: frame pointer 5764c609719bSwdenk 5765e6bee808SJoakim Tjernlund (U-Boot also uses R12 as internal GOT pointer. r12 5766e6bee808SJoakim Tjernlund is a volatile register so r12 needs to be reset when 5767e6bee808SJoakim Tjernlund going back and forth between asm and C) 5768c609719bSwdenk 5769e7670f6cSWolfgang Denk ==> U-Boot will use R2 to hold a pointer to the global data 5770c609719bSwdenk 5771c609719bSwdenk Note: on PPC, we could use a static initializer (since the 5772c609719bSwdenk address of the global data structure is known at compile time), 5773c609719bSwdenk but it turned out that reserving a register results in somewhat 5774c609719bSwdenk smaller code - although the code savings are not that big (on 5775c609719bSwdenk average for all boards 752 bytes for the whole U-Boot image, 5776c609719bSwdenk 624 text + 127 data). 5777c609719bSwdenk 5778c4db335cSRobin GetzOn Blackfin, the normal C ABI (except for P3) is followed as documented here: 57794c58eb55SMike Frysinger http://docs.blackfin.uclinux.org/doku.php?id=application_binary_interface 57804c58eb55SMike Frysinger 5781c4db335cSRobin Getz ==> U-Boot will use P3 to hold a pointer to the global data 57824c58eb55SMike Frysinger 5783c609719bSwdenkOn ARM, the following registers are used: 5784c609719bSwdenk 5785c609719bSwdenk R0: function argument word/integer result 5786c609719bSwdenk R1-R3: function argument word 578712eba1b4SJeroen Hofstee R9: platform specific 578812eba1b4SJeroen Hofstee R10: stack limit (used only if stack checking is enabled) 5789c609719bSwdenk R11: argument (frame) pointer 5790c609719bSwdenk R12: temporary workspace 5791c609719bSwdenk R13: stack pointer 5792c609719bSwdenk R14: link register 5793c609719bSwdenk R15: program counter 5794c609719bSwdenk 579512eba1b4SJeroen Hofstee ==> U-Boot will use R9 to hold a pointer to the global data 579612eba1b4SJeroen Hofstee 579712eba1b4SJeroen Hofstee Note: on ARM, only R_ARM_RELATIVE relocations are supported. 5798c609719bSwdenk 57990df01fd3SThomas ChouOn Nios II, the ABI is documented here: 58000df01fd3SThomas Chou http://www.altera.com/literature/hb/nios2/n2cpu_nii51016.pdf 58010df01fd3SThomas Chou 58020df01fd3SThomas Chou ==> U-Boot will use gp to hold a pointer to the global data 58030df01fd3SThomas Chou 58040df01fd3SThomas Chou Note: on Nios II, we give "-G0" option to gcc and don't use gp 58050df01fd3SThomas Chou to access small data sections, so gp is free. 58060df01fd3SThomas Chou 5807afc1ce82SMacpaul LinOn NDS32, the following registers are used: 5808afc1ce82SMacpaul Lin 5809afc1ce82SMacpaul Lin R0-R1: argument/return 5810afc1ce82SMacpaul Lin R2-R5: argument 5811afc1ce82SMacpaul Lin R15: temporary register for assembler 5812afc1ce82SMacpaul Lin R16: trampoline register 5813afc1ce82SMacpaul Lin R28: frame pointer (FP) 5814afc1ce82SMacpaul Lin R29: global pointer (GP) 5815afc1ce82SMacpaul Lin R30: link register (LP) 5816afc1ce82SMacpaul Lin R31: stack pointer (SP) 5817afc1ce82SMacpaul Lin PC: program counter (PC) 5818afc1ce82SMacpaul Lin 5819afc1ce82SMacpaul Lin ==> U-Boot will use R10 to hold a pointer to the global data 5820afc1ce82SMacpaul Lin 5821d87080b7SWolfgang DenkNOTE: DECLARE_GLOBAL_DATA_PTR must be used with file-global scope, 5822d87080b7SWolfgang Denkor current versions of GCC may "optimize" the code too much. 5823c609719bSwdenk 5824c609719bSwdenkMemory Management: 5825c609719bSwdenk------------------ 5826c609719bSwdenk 5827c609719bSwdenkU-Boot runs in system state and uses physical addresses, i.e. the 5828c609719bSwdenkMMU is not used either for address mapping nor for memory protection. 5829c609719bSwdenk 5830c609719bSwdenkThe available memory is mapped to fixed addresses using the memory 5831c609719bSwdenkcontroller. In this process, a contiguous block is formed for each 5832c609719bSwdenkmemory type (Flash, SDRAM, SRAM), even when it consists of several 5833c609719bSwdenkphysical memory banks. 5834c609719bSwdenk 5835c609719bSwdenkU-Boot is installed in the first 128 kB of the first Flash bank (on 5836c609719bSwdenkTQM8xxL modules this is the range 0x40000000 ... 0x4001FFFF). After 5837c609719bSwdenkbooting and sizing and initializing DRAM, the code relocates itself 5838c609719bSwdenkto the upper end of DRAM. Immediately below the U-Boot code some 58396d0f6bcfSJean-Christophe PLAGNIOL-VILLARDmemory is reserved for use by malloc() [see CONFIG_SYS_MALLOC_LEN 5840c609719bSwdenkconfiguration setting]. Below that, a structure with global Board 5841c609719bSwdenkInfo data is placed, followed by the stack (growing downward). 5842c609719bSwdenk 5843c609719bSwdenkAdditionally, some exception handler code is copied to the low 8 kB 5844c609719bSwdenkof DRAM (0x00000000 ... 0x00001FFF). 5845c609719bSwdenk 5846c609719bSwdenkSo a typical memory configuration with 16 MB of DRAM could look like 5847c609719bSwdenkthis: 5848c609719bSwdenk 5849c609719bSwdenk 0x0000 0000 Exception Vector code 5850c609719bSwdenk : 5851c609719bSwdenk 0x0000 1FFF 5852c609719bSwdenk 0x0000 2000 Free for Application Use 5853c609719bSwdenk : 5854c609719bSwdenk : 5855c609719bSwdenk 5856c609719bSwdenk : 5857c609719bSwdenk : 5858c609719bSwdenk 0x00FB FF20 Monitor Stack (Growing downward) 5859c609719bSwdenk 0x00FB FFAC Board Info Data and permanent copy of global data 5860c609719bSwdenk 0x00FC 0000 Malloc Arena 5861c609719bSwdenk : 5862c609719bSwdenk 0x00FD FFFF 5863c609719bSwdenk 0x00FE 0000 RAM Copy of Monitor Code 5864c609719bSwdenk ... eventually: LCD or video framebuffer 5865c609719bSwdenk ... eventually: pRAM (Protected RAM - unchanged by reset) 5866c609719bSwdenk 0x00FF FFFF [End of RAM] 5867c609719bSwdenk 5868c609719bSwdenk 5869c609719bSwdenkSystem Initialization: 5870c609719bSwdenk---------------------- 5871c609719bSwdenk 5872c609719bSwdenkIn the reset configuration, U-Boot starts at the reset entry point 587311ccc33fSMarcel Ziswiler(on most PowerPC systems at address 0x00000100). Because of the reset 5874c609719bSwdenkconfiguration for CS0# this is a mirror of the onboard Flash memory. 58757152b1d0SwdenkTo be able to re-map memory U-Boot then jumps to its link address. 5876c609719bSwdenkTo be able to implement the initialization code in C, a (small!) 5877c609719bSwdenkinitial stack is set up in the internal Dual Ported RAM (in case CPUs 5878c609719bSwdenkwhich provide such a feature like MPC8xx or MPC8260), or in a locked 5879c609719bSwdenkpart of the data cache. After that, U-Boot initializes the CPU core, 5880c609719bSwdenkthe caches and the SIU. 5881c609719bSwdenk 5882c609719bSwdenkNext, all (potentially) available memory banks are mapped using a 5883c609719bSwdenkpreliminary mapping. For example, we put them on 512 MB boundaries 5884c609719bSwdenk(multiples of 0x20000000: SDRAM on 0x00000000 and 0x20000000, Flash 5885c609719bSwdenkon 0x40000000 and 0x60000000, SRAM on 0x80000000). Then UPM A is 5886c609719bSwdenkprogrammed for SDRAM access. Using the temporary configuration, a 5887c609719bSwdenksimple memory test is run that determines the size of the SDRAM 5888c609719bSwdenkbanks. 5889c609719bSwdenk 5890c609719bSwdenkWhen there is more than one SDRAM bank, and the banks are of 58917152b1d0Swdenkdifferent size, the largest is mapped first. For equal size, the first 5892c609719bSwdenkbank (CS2#) is mapped first. The first mapping is always for address 5893c609719bSwdenk0x00000000, with any additional banks following immediately to create 5894c609719bSwdenkcontiguous memory starting from 0. 5895c609719bSwdenk 5896c609719bSwdenkThen, the monitor installs itself at the upper end of the SDRAM area 5897c609719bSwdenkand allocates memory for use by malloc() and for the global Board 5898c609719bSwdenkInfo data; also, the exception vector code is copied to the low RAM 5899c609719bSwdenkpages, and the final stack is set up. 5900c609719bSwdenk 5901c609719bSwdenkOnly after this relocation will you have a "normal" C environment; 5902c609719bSwdenkuntil that you are restricted in several ways, mostly because you are 5903c609719bSwdenkrunning from ROM, and because the code will have to be relocated to a 5904c609719bSwdenknew address in RAM. 5905c609719bSwdenk 5906c609719bSwdenk 5907c609719bSwdenkU-Boot Porting Guide: 5908c609719bSwdenk---------------------- 5909c609719bSwdenk 5910c609719bSwdenk[Based on messages by Jerry Van Baren in the U-Boot-Users mailing 59116aff3115Swdenklist, October 2002] 5912c609719bSwdenk 5913c609719bSwdenk 5914c609719bSwdenkint main(int argc, char *argv[]) 5915c609719bSwdenk{ 5916c609719bSwdenk sighandler_t no_more_time; 5917c609719bSwdenk 5918c609719bSwdenk signal(SIGALRM, no_more_time); 5919c609719bSwdenk alarm(PROJECT_DEADLINE - toSec (3 * WEEK)); 5920c609719bSwdenk 5921c609719bSwdenk if (available_money > available_manpower) { 59226c3fef28SJerry Van Baren Pay consultant to port U-Boot; 5923c609719bSwdenk return 0; 5924c609719bSwdenk } 5925c609719bSwdenk 5926c609719bSwdenk Download latest U-Boot source; 5927c609719bSwdenk 59280668236bSWolfgang Denk Subscribe to u-boot mailing list; 59296aff3115Swdenk 59306c3fef28SJerry Van Baren if (clueless) 5931c609719bSwdenk email("Hi, I am new to U-Boot, how do I get started?"); 5932c609719bSwdenk 5933c609719bSwdenk while (learning) { 5934c609719bSwdenk Read the README file in the top level directory; 59357cb22f97Swdenk Read http://www.denx.de/twiki/bin/view/DULG/Manual; 59366c3fef28SJerry Van Baren Read applicable doc/*.README; 5937c609719bSwdenk Read the source, Luke; 59386c3fef28SJerry Van Baren /* find . -name "*.[chS]" | xargs grep -i <keyword> */ 5939c609719bSwdenk } 5940c609719bSwdenk 59416c3fef28SJerry Van Baren if (available_money > toLocalCurrency ($2500)) 59426c3fef28SJerry Van Baren Buy a BDI3000; 59436c3fef28SJerry Van Baren else 5944c609719bSwdenk Add a lot of aggravation and time; 5945c609719bSwdenk 59466c3fef28SJerry Van Baren if (a similar board exists) { /* hopefully... */ 59476c3fef28SJerry Van Baren cp -a board/<similar> board/<myboard> 59486c3fef28SJerry Van Baren cp include/configs/<similar>.h include/configs/<myboard>.h 59496c3fef28SJerry Van Baren } else { 5950c609719bSwdenk Create your own board support subdirectory; 59516c3fef28SJerry Van Baren Create your own board include/configs/<myboard>.h file; 59526c3fef28SJerry Van Baren } 59536c3fef28SJerry Van Baren Edit new board/<myboard> files 59546c3fef28SJerry Van Baren Edit new include/configs/<myboard>.h 5955c609719bSwdenk 59566c3fef28SJerry Van Baren while (!accepted) { 5957c609719bSwdenk while (!running) { 5958c609719bSwdenk do { 5959c609719bSwdenk Add / modify source code; 5960c609719bSwdenk } until (compiles); 5961c609719bSwdenk Debug; 5962c609719bSwdenk if (clueless) 5963c609719bSwdenk email("Hi, I am having problems..."); 5964c609719bSwdenk } 59656c3fef28SJerry Van Baren Send patch file to the U-Boot email list; 59666c3fef28SJerry Van Baren if (reasonable critiques) 59676c3fef28SJerry Van Baren Incorporate improvements from email list code review; 59686c3fef28SJerry Van Baren else 59696c3fef28SJerry Van Baren Defend code as written; 59706c3fef28SJerry Van Baren } 5971c609719bSwdenk 5972c609719bSwdenk return 0; 5973c609719bSwdenk} 5974c609719bSwdenk 5975c609719bSwdenkvoid no_more_time (int sig) 5976c609719bSwdenk{ 5977c609719bSwdenk hire_a_guru(); 5978c609719bSwdenk} 5979c609719bSwdenk 5980c609719bSwdenk 5981c609719bSwdenkCoding Standards: 5982c609719bSwdenk----------------- 5983c609719bSwdenk 5984c609719bSwdenkAll contributions to U-Boot should conform to the Linux kernel 59852c051651SDetlev Zundelcoding style; see the file "Documentation/CodingStyle" and the script 59867ca9296eSWolfgang Denk"scripts/Lindent" in your Linux kernel source directory. 5987c609719bSwdenk 59882c051651SDetlev ZundelSource files originating from a different project (for example the 59892c051651SDetlev ZundelMTD subsystem) are generally exempt from these guidelines and are not 59902c051651SDetlev Zundelreformated to ease subsequent migration to newer versions of those 59912c051651SDetlev Zundelsources. 59922c051651SDetlev Zundel 59932c051651SDetlev ZundelPlease note that U-Boot is implemented in C (and to some small parts in 59942c051651SDetlev ZundelAssembler); no C++ is used, so please do not use C++ style comments (//) 59952c051651SDetlev Zundelin your code. 5996c609719bSwdenk 5997c178d3daSwdenkPlease also stick to the following formatting rules: 5998180d3f74Swdenk- remove any trailing white space 59997ca9296eSWolfgang Denk- use TAB characters for indentation and vertical alignment, not spaces 6000180d3f74Swdenk- make sure NOT to use DOS '\r\n' line feeds 60017ca9296eSWolfgang Denk- do not add more than 2 consecutive empty lines to source files 6002180d3f74Swdenk- do not add trailing empty lines to source files 6003180d3f74Swdenk 6004c609719bSwdenkSubmissions which do not conform to the standards may be returned 6005c609719bSwdenkwith a request to reformat the changes. 6006c609719bSwdenk 6007c609719bSwdenk 6008c609719bSwdenkSubmitting Patches: 6009c609719bSwdenk------------------- 6010c609719bSwdenk 6011c609719bSwdenkSince the number of patches for U-Boot is growing, we need to 6012c609719bSwdenkestablish some rules. Submissions which do not conform to these rules 6013c609719bSwdenkmay be rejected, even when they contain important and valuable stuff. 6014c609719bSwdenk 60150d28f34bSMagnus LiljaPlease see http://www.denx.de/wiki/U-Boot/Patches for details. 6016218ca724SWolfgang Denk 60170668236bSWolfgang DenkPatches shall be sent to the u-boot mailing list <u-boot@lists.denx.de>; 60180668236bSWolfgang Denksee http://lists.denx.de/mailman/listinfo/u-boot 60190668236bSWolfgang Denk 6020c609719bSwdenkWhen you send a patch, please include the following information with 6021c609719bSwdenkit: 6022c609719bSwdenk 6023c609719bSwdenk* For bug fixes: a description of the bug and how your patch fixes 6024c609719bSwdenk this bug. Please try to include a way of demonstrating that the 6025c609719bSwdenk patch actually fixes something. 6026c609719bSwdenk 6027c609719bSwdenk* For new features: a description of the feature and your 6028c609719bSwdenk implementation. 6029c609719bSwdenk 6030c609719bSwdenk* A CHANGELOG entry as plaintext (separate from the patch) 6031c609719bSwdenk 6032c609719bSwdenk* For major contributions, your entry to the CREDITS file 6033c609719bSwdenk 603427af930eSAlbert ARIBAUD* When you add support for a new board, don't forget to add a 603527af930eSAlbert ARIBAUD maintainer e-mail address to the boards.cfg file, too. 6036c609719bSwdenk 6037c609719bSwdenk* If your patch adds new configuration options, don't forget to 6038c609719bSwdenk document these in the README file. 6039c609719bSwdenk 6040218ca724SWolfgang Denk* The patch itself. If you are using git (which is *strongly* 6041218ca724SWolfgang Denk recommended) you can easily generate the patch using the 60427ca9296eSWolfgang Denk "git format-patch". If you then use "git send-email" to send it to 6043218ca724SWolfgang Denk the U-Boot mailing list, you will avoid most of the common problems 6044218ca724SWolfgang Denk with some other mail clients. 6045c609719bSwdenk 6046218ca724SWolfgang Denk If you cannot use git, use "diff -purN OLD NEW". If your version of 6047218ca724SWolfgang Denk diff does not support these options, then get the latest version of 6048218ca724SWolfgang Denk GNU diff. 60496dff5529Swdenk 6050218ca724SWolfgang Denk The current directory when running this command shall be the parent 6051218ca724SWolfgang Denk directory of the U-Boot source tree (i. e. please make sure that 6052218ca724SWolfgang Denk your patch includes sufficient directory information for the 6053218ca724SWolfgang Denk affected files). 6054218ca724SWolfgang Denk 6055218ca724SWolfgang Denk We prefer patches as plain text. MIME attachments are discouraged, 6056218ca724SWolfgang Denk and compressed attachments must not be used. 6057c609719bSwdenk 605852f52c14Swdenk* If one logical set of modifications affects or creates several 605952f52c14Swdenk files, all these changes shall be submitted in a SINGLE patch file. 606052f52c14Swdenk 606152f52c14Swdenk* Changesets that contain different, unrelated modifications shall be 606252f52c14Swdenk submitted as SEPARATE patches, one patch per changeset. 606352f52c14Swdenk 606452f52c14Swdenk 6065c609719bSwdenkNotes: 6066c609719bSwdenk 6067c609719bSwdenk* Before sending the patch, run the MAKEALL script on your patched 6068c609719bSwdenk source tree and make sure that no errors or warnings are reported 6069c609719bSwdenk for any of the boards. 6070c609719bSwdenk 6071c609719bSwdenk* Keep your modifications to the necessary minimum: A patch 6072c609719bSwdenk containing several unrelated changes or arbitrary reformats will be 6073c609719bSwdenk returned with a request to re-formatting / split it. 6074c609719bSwdenk 6075c609719bSwdenk* If you modify existing code, make sure that your new code does not 6076c609719bSwdenk add to the memory footprint of the code ;-) Small is beautiful! 6077c609719bSwdenk When adding new features, these should compile conditionally only 6078c609719bSwdenk (using #ifdef), and the resulting code with the new feature 6079c609719bSwdenk disabled must not need more memory than the old code without your 6080c609719bSwdenk modification. 608190dc6704Swdenk 60820668236bSWolfgang Denk* Remember that there is a size limit of 100 kB per message on the 60830668236bSWolfgang Denk u-boot mailing list. Bigger patches will be moderated. If they are 60840668236bSWolfgang Denk reasonable and not too big, they will be acknowledged. But patches 60850668236bSWolfgang Denk bigger than the size limit should be avoided. 6086