1c609719bSwdenk# 2eca3aeb3SWolfgang Denk# (C) Copyright 2000 - 2013 3c609719bSwdenk# Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4c609719bSwdenk# 5eca3aeb3SWolfgang Denk# SPDX-License-Identifier: GPL-2.0+ 6c609719bSwdenk# 7c609719bSwdenk 8c609719bSwdenkSummary: 9c609719bSwdenk======== 10c609719bSwdenk 1124ee89b9SwdenkThis directory contains the source code for U-Boot, a boot loader for 12e86e5a07SwdenkEmbedded boards based on PowerPC, ARM, MIPS and several other 13e86e5a07Swdenkprocessors, which can be installed in a boot ROM and used to 14e86e5a07Swdenkinitialize and test the hardware or to download and run application 15e86e5a07Swdenkcode. 16c609719bSwdenk 17c609719bSwdenkThe development of U-Boot is closely related to Linux: some parts of 1824ee89b9Swdenkthe source code originate in the Linux source tree, we have some 1924ee89b9Swdenkheader files in common, and special provision has been made to 20c609719bSwdenksupport booting of Linux images. 21c609719bSwdenk 22c609719bSwdenkSome attention has been paid to make this software easily 23c609719bSwdenkconfigurable and extendable. For instance, all monitor commands are 24c609719bSwdenkimplemented with the same call interface, so that it's very easy to 25c609719bSwdenkadd new commands. Also, instead of permanently adding rarely used 26c609719bSwdenkcode (for instance hardware test utilities) to the monitor, you can 27c609719bSwdenkload and run it dynamically. 28c609719bSwdenk 29c609719bSwdenk 30c609719bSwdenkStatus: 31c609719bSwdenk======= 32c609719bSwdenk 33c609719bSwdenkIn general, all boards for which a configuration option exists in the 34c609719bSwdenkMakefile have been tested to some extent and can be considered 35c609719bSwdenk"working". In fact, many of them are used in production systems. 36c609719bSwdenk 37c609719bSwdenkIn case of problems see the CHANGELOG and CREDITS files to find out 3827af930eSAlbert ARIBAUDwho contributed the specific port. The boards.cfg file lists board 39218ca724SWolfgang Denkmaintainers. 40c609719bSwdenk 41adb9d851SRobert P. J. DayNote: There is no CHANGELOG file in the actual U-Boot source tree; 42adb9d851SRobert P. J. Dayit can be created dynamically from the Git log using: 43adb9d851SRobert P. J. Day 44adb9d851SRobert P. J. Day make CHANGELOG 45adb9d851SRobert P. J. Day 46c609719bSwdenk 47c609719bSwdenkWhere to get help: 48c609719bSwdenk================== 49c609719bSwdenk 50c609719bSwdenkIn case you have questions about, problems with or contributions for 51c609719bSwdenkU-Boot you should send a message to the U-Boot mailing list at 520c32565fSPeter Tyser<u-boot@lists.denx.de>. There is also an archive of previous traffic 530c32565fSPeter Tyseron the mailing list - please search the archive before asking FAQ's. 540c32565fSPeter TyserPlease see http://lists.denx.de/pipermail/u-boot and 550c32565fSPeter Tyserhttp://dir.gmane.org/gmane.comp.boot-loaders.u-boot 56c609719bSwdenk 57c609719bSwdenk 58218ca724SWolfgang DenkWhere to get source code: 59218ca724SWolfgang Denk========================= 60218ca724SWolfgang Denk 61218ca724SWolfgang DenkThe U-Boot source code is maintained in the git repository at 62218ca724SWolfgang Denkgit://www.denx.de/git/u-boot.git ; you can browse it online at 63218ca724SWolfgang Denkhttp://www.denx.de/cgi-bin/gitweb.cgi?p=u-boot.git;a=summary 64218ca724SWolfgang Denk 65218ca724SWolfgang DenkThe "snapshot" links on this page allow you to download tarballs of 6611ccc33fSMarcel Ziswilerany version you might be interested in. Official releases are also 67218ca724SWolfgang Denkavailable for FTP download from the ftp://ftp.denx.de/pub/u-boot/ 68218ca724SWolfgang Denkdirectory. 69218ca724SWolfgang Denk 70d4ee711dSAnatolij GustschinPre-built (and tested) images are available from 71218ca724SWolfgang Denkftp://ftp.denx.de/pub/u-boot/images/ 72218ca724SWolfgang Denk 73218ca724SWolfgang Denk 74c609719bSwdenkWhere we come from: 75c609719bSwdenk=================== 76c609719bSwdenk 77c609719bSwdenk- start from 8xxrom sources 7824ee89b9Swdenk- create PPCBoot project (http://sourceforge.net/projects/ppcboot) 79c609719bSwdenk- clean up code 80c609719bSwdenk- make it easier to add custom boards 81c609719bSwdenk- make it possible to add other [PowerPC] CPUs 82c609719bSwdenk- extend functions, especially: 83c609719bSwdenk * Provide extended interface to Linux boot loader 84c609719bSwdenk * S-Record download 85c609719bSwdenk * network boot 8611ccc33fSMarcel Ziswiler * PCMCIA / CompactFlash / ATA disk / SCSI ... boot 8724ee89b9Swdenk- create ARMBoot project (http://sourceforge.net/projects/armboot) 88c609719bSwdenk- add other CPU families (starting with ARM) 8924ee89b9Swdenk- create U-Boot project (http://sourceforge.net/projects/u-boot) 900d28f34bSMagnus Lilja- current project page: see http://www.denx.de/wiki/U-Boot 9124ee89b9Swdenk 9224ee89b9Swdenk 9324ee89b9SwdenkNames and Spelling: 9424ee89b9Swdenk=================== 9524ee89b9Swdenk 9624ee89b9SwdenkThe "official" name of this project is "Das U-Boot". The spelling 9724ee89b9Swdenk"U-Boot" shall be used in all written text (documentation, comments 9824ee89b9Swdenkin source files etc.). Example: 9924ee89b9Swdenk 10024ee89b9Swdenk This is the README file for the U-Boot project. 10124ee89b9Swdenk 10224ee89b9SwdenkFile names etc. shall be based on the string "u-boot". Examples: 10324ee89b9Swdenk 10424ee89b9Swdenk include/asm-ppc/u-boot.h 10524ee89b9Swdenk 10624ee89b9Swdenk #include <asm/u-boot.h> 10724ee89b9Swdenk 10824ee89b9SwdenkVariable names, preprocessor constants etc. shall be either based on 10924ee89b9Swdenkthe string "u_boot" or on "U_BOOT". Example: 11024ee89b9Swdenk 11124ee89b9Swdenk U_BOOT_VERSION u_boot_logo 11224ee89b9Swdenk IH_OS_U_BOOT u_boot_hush_start 113c609719bSwdenk 114c609719bSwdenk 11593f19cc0SwdenkVersioning: 11693f19cc0Swdenk=========== 11793f19cc0Swdenk 118360d883aSThomas WeberStarting with the release in October 2008, the names of the releases 119360d883aSThomas Weberwere changed from numerical release numbers without deeper meaning 120360d883aSThomas Weberinto a time stamp based numbering. Regular releases are identified by 121360d883aSThomas Webernames consisting of the calendar year and month of the release date. 122360d883aSThomas WeberAdditional fields (if present) indicate release candidates or bug fix 123360d883aSThomas Weberreleases in "stable" maintenance trees. 12493f19cc0Swdenk 125360d883aSThomas WeberExamples: 126360d883aSThomas Weber U-Boot v2009.11 - Release November 2009 127360d883aSThomas Weber U-Boot v2009.11.1 - Release 1 in version November 2009 stable tree 128360d883aSThomas Weber U-Boot v2010.09-rc1 - Release candiate 1 for September 2010 release 12993f19cc0Swdenk 13093f19cc0Swdenk 131c609719bSwdenkDirectory Hierarchy: 132c609719bSwdenk==================== 133c609719bSwdenk 1348d321b81SPeter Tyser/arch Architecture specific files 1358d321b81SPeter Tyser /arm Files generic to ARM architecture 1368d321b81SPeter Tyser /cpu CPU specific files 1378d321b81SPeter Tyser /arm720t Files specific to ARM 720 CPUs 1388d321b81SPeter Tyser /arm920t Files specific to ARM 920 CPUs 1396eb0921aSAndreas Bießmann /at91 Files specific to Atmel AT91RM9200 CPU 1408d321b81SPeter Tyser /imx Files specific to Freescale MC9328 i.MX CPUs 1418d321b81SPeter Tyser /s3c24x0 Files specific to Samsung S3C24X0 CPUs 1428d321b81SPeter Tyser /arm926ejs Files specific to ARM 926 CPUs 1438d321b81SPeter Tyser /arm1136 Files specific to ARM 1136 CPUs 1448d321b81SPeter Tyser /ixp Files specific to Intel XScale IXP CPUs 1458d321b81SPeter Tyser /pxa Files specific to Intel XScale PXA CPUs 1468d321b81SPeter Tyser /sa1100 Files specific to Intel StrongARM SA1100 CPUs 1478d321b81SPeter Tyser /lib Architecture specific library files 1488d321b81SPeter Tyser /avr32 Files generic to AVR32 architecture 1498d321b81SPeter Tyser /cpu CPU specific files 1508d321b81SPeter Tyser /lib Architecture specific library files 1518d321b81SPeter Tyser /blackfin Files generic to Analog Devices Blackfin architecture 1528d321b81SPeter Tyser /cpu CPU specific files 1538d321b81SPeter Tyser /lib Architecture specific library files 1548d321b81SPeter Tyser /m68k Files generic to m68k architecture 1558d321b81SPeter Tyser /cpu CPU specific files 1568d321b81SPeter Tyser /mcf52x2 Files specific to Freescale ColdFire MCF52x2 CPUs 1578d321b81SPeter Tyser /mcf5227x Files specific to Freescale ColdFire MCF5227x CPUs 1588d321b81SPeter Tyser /mcf532x Files specific to Freescale ColdFire MCF5329 CPUs 1598d321b81SPeter Tyser /mcf5445x Files specific to Freescale ColdFire MCF5445x CPUs 1608d321b81SPeter Tyser /mcf547x_8x Files specific to Freescale ColdFire MCF547x_8x CPUs 1618d321b81SPeter Tyser /lib Architecture specific library files 1628d321b81SPeter Tyser /microblaze Files generic to microblaze architecture 1638d321b81SPeter Tyser /cpu CPU specific files 1648d321b81SPeter Tyser /lib Architecture specific library files 1658d321b81SPeter Tyser /mips Files generic to MIPS architecture 1668d321b81SPeter Tyser /cpu CPU specific files 16792bbd64eSDaniel Schwierzeck /mips32 Files specific to MIPS32 CPUs 16880421fccSXiangfu Liu /xburst Files specific to Ingenic XBurst CPUs 1698d321b81SPeter Tyser /lib Architecture specific library files 170afc1ce82SMacpaul Lin /nds32 Files generic to NDS32 architecture 171afc1ce82SMacpaul Lin /cpu CPU specific files 172afc1ce82SMacpaul Lin /n1213 Files specific to Andes Technology N1213 CPUs 173afc1ce82SMacpaul Lin /lib Architecture specific library files 1748d321b81SPeter Tyser /nios2 Files generic to Altera NIOS2 architecture 1758d321b81SPeter Tyser /cpu CPU specific files 1768d321b81SPeter Tyser /lib Architecture specific library files 17733c7731bSRobert P. J. Day /openrisc Files generic to OpenRISC architecture 17833c7731bSRobert P. J. Day /cpu CPU specific files 17933c7731bSRobert P. J. Day /lib Architecture specific library files 180a47a12beSStefan Roese /powerpc Files generic to PowerPC architecture 1818d321b81SPeter Tyser /cpu CPU specific files 1828d321b81SPeter Tyser /74xx_7xx Files specific to Freescale MPC74xx and 7xx CPUs 1838d321b81SPeter Tyser /mpc5xx Files specific to Freescale MPC5xx CPUs 1848d321b81SPeter Tyser /mpc5xxx Files specific to Freescale MPC5xxx CPUs 1858d321b81SPeter Tyser /mpc8xx Files specific to Freescale MPC8xx CPUs 1868d321b81SPeter Tyser /mpc824x Files specific to Freescale MPC824x CPUs 1878d321b81SPeter Tyser /mpc8260 Files specific to Freescale MPC8260 CPUs 1888d321b81SPeter Tyser /mpc85xx Files specific to Freescale MPC85xx CPUs 1898d321b81SPeter Tyser /ppc4xx Files specific to AMCC PowerPC 4xx CPUs 1908d321b81SPeter Tyser /lib Architecture specific library files 1918d321b81SPeter Tyser /sh Files generic to SH architecture 1928d321b81SPeter Tyser /cpu CPU specific files 1938d321b81SPeter Tyser /sh2 Files specific to sh2 CPUs 1948d321b81SPeter Tyser /sh3 Files specific to sh3 CPUs 1958d321b81SPeter Tyser /sh4 Files specific to sh4 CPUs 1968d321b81SPeter Tyser /lib Architecture specific library files 1978d321b81SPeter Tyser /sparc Files generic to SPARC architecture 1988d321b81SPeter Tyser /cpu CPU specific files 1998d321b81SPeter Tyser /leon2 Files specific to Gaisler LEON2 SPARC CPU 2008d321b81SPeter Tyser /leon3 Files specific to Gaisler LEON3 SPARC CPU 2018d321b81SPeter Tyser /lib Architecture specific library files 20233c7731bSRobert P. J. Day /x86 Files generic to x86 architecture 20333c7731bSRobert P. J. Day /cpu CPU specific files 20433c7731bSRobert P. J. Day /lib Architecture specific library files 2058d321b81SPeter Tyser/api Machine/arch independent API for external apps 2068d321b81SPeter Tyser/board Board dependent files 2078d321b81SPeter Tyser/common Misc architecture independent functions 2088d321b81SPeter Tyser/disk Code for disk drive partition handling 2098d321b81SPeter Tyser/doc Documentation (don't expect too much) 2108d321b81SPeter Tyser/drivers Commonly used device drivers 21133c7731bSRobert P. J. Day/dts Contains Makefile for building internal U-Boot fdt. 2128d321b81SPeter Tyser/examples Example code for standalone applications, etc. 2138d321b81SPeter Tyser/fs Filesystem code (cramfs, ext2, jffs2, etc.) 2148d321b81SPeter Tyser/include Header Files 2158d321b81SPeter Tyser/lib Files generic to all architectures 2168d321b81SPeter Tyser /libfdt Library files to support flattened device trees 2178d321b81SPeter Tyser /lzma Library files to support LZMA decompression 2188d321b81SPeter Tyser /lzo Library files to support LZO decompression 2198d321b81SPeter Tyser/net Networking code 2208d321b81SPeter Tyser/post Power On Self Test 22133c7731bSRobert P. J. Day/spl Secondary Program Loader framework 2228d321b81SPeter Tyser/tools Tools to build S-Record or U-Boot images, etc. 223c609719bSwdenk 224c609719bSwdenkSoftware Configuration: 225c609719bSwdenk======================= 226c609719bSwdenk 227c609719bSwdenkConfiguration is usually done using C preprocessor defines; the 228c609719bSwdenkrationale behind that is to avoid dead code whenever possible. 229c609719bSwdenk 230c609719bSwdenkThere are two classes of configuration variables: 231c609719bSwdenk 232c609719bSwdenk* Configuration _OPTIONS_: 233c609719bSwdenk These are selectable by the user and have names beginning with 234c609719bSwdenk "CONFIG_". 235c609719bSwdenk 236c609719bSwdenk* Configuration _SETTINGS_: 237c609719bSwdenk These depend on the hardware etc. and should not be meddled with if 238c609719bSwdenk you don't know what you're doing; they have names beginning with 2396d0f6bcfSJean-Christophe PLAGNIOL-VILLARD "CONFIG_SYS_". 240c609719bSwdenk 241c609719bSwdenkLater we will add a configuration tool - probably similar to or even 242c609719bSwdenkidentical to what's used for the Linux kernel. Right now, we have to 243c609719bSwdenkdo the configuration by hand, which means creating some symbolic 244c609719bSwdenklinks and editing some configuration files. We use the TQM8xxL boards 245c609719bSwdenkas an example here. 246c609719bSwdenk 247c609719bSwdenk 248c609719bSwdenkSelection of Processor Architecture and Board Type: 249c609719bSwdenk--------------------------------------------------- 250c609719bSwdenk 251c609719bSwdenkFor all supported boards there are ready-to-use default 252c609719bSwdenkconfigurations available; just type "make <board_name>_config". 253c609719bSwdenk 254c609719bSwdenkExample: For a TQM823L module type: 255c609719bSwdenk 256c609719bSwdenk cd u-boot 257c609719bSwdenk make TQM823L_config 258c609719bSwdenk 25911ccc33fSMarcel ZiswilerFor the Cogent platform, you need to specify the CPU type as well; 260c609719bSwdenke.g. "make cogent_mpc8xx_config". And also configure the cogent 261c609719bSwdenkdirectory according to the instructions in cogent/README. 262c609719bSwdenk 263c609719bSwdenk 264c609719bSwdenkConfiguration Options: 265c609719bSwdenk---------------------- 266c609719bSwdenk 267c609719bSwdenkConfiguration depends on the combination of board and CPU type; all 268c609719bSwdenksuch information is kept in a configuration file 269c609719bSwdenk"include/configs/<board_name>.h". 270c609719bSwdenk 271c609719bSwdenkExample: For a TQM823L module, all configuration settings are in 272c609719bSwdenk"include/configs/TQM823L.h". 273c609719bSwdenk 274c609719bSwdenk 2757f6c2cbcSwdenkMany of the options are named exactly as the corresponding Linux 2767f6c2cbcSwdenkkernel configuration options. The intention is to make it easier to 2777f6c2cbcSwdenkbuild a config tool - later. 2787f6c2cbcSwdenk 2797f6c2cbcSwdenk 280c609719bSwdenkThe following options need to be configured: 281c609719bSwdenk 2822628114eSKim Phillips- CPU Type: Define exactly one, e.g. CONFIG_MPC85XX. 283c609719bSwdenk 2842628114eSKim Phillips- Board Type: Define exactly one, e.g. CONFIG_MPC8540ADS. 2856ccec449SWolfgang Denk 2866ccec449SWolfgang Denk- CPU Daughterboard Type: (if CONFIG_ATSTK1000 is defined) 28709ea0de0SHaavard Skinnemoen Define exactly one, e.g. CONFIG_ATSTK1002 288c609719bSwdenk 289c609719bSwdenk- CPU Module Type: (if CONFIG_COGENT is defined) 290c609719bSwdenk Define exactly one of 291c609719bSwdenk CONFIG_CMA286_60_OLD 292c609719bSwdenk--- FIXME --- not tested yet: 293c609719bSwdenk CONFIG_CMA286_60, CONFIG_CMA286_21, CONFIG_CMA286_60P, 294c609719bSwdenk CONFIG_CMA287_23, CONFIG_CMA287_50 295c609719bSwdenk 296c609719bSwdenk- Motherboard Type: (if CONFIG_COGENT is defined) 297c609719bSwdenk Define exactly one of 298c609719bSwdenk CONFIG_CMA101, CONFIG_CMA102 299c609719bSwdenk 300c609719bSwdenk- Motherboard I/O Modules: (if CONFIG_COGENT is defined) 301c609719bSwdenk Define one or more of 302c609719bSwdenk CONFIG_CMA302 303c609719bSwdenk 304c609719bSwdenk- Motherboard Options: (if CONFIG_CMA101 or CONFIG_CMA102 are defined) 305c609719bSwdenk Define one or more of 306c609719bSwdenk CONFIG_LCD_HEARTBEAT - update a character position on 30711ccc33fSMarcel Ziswiler the LCD display every second with 308c609719bSwdenk a "rotator" |\-/|\-/ 309c609719bSwdenk 3102535d602Swdenk- Board flavour: (if CONFIG_MPC8260ADS is defined) 3112535d602Swdenk CONFIG_ADSTYPE 3122535d602Swdenk Possible values are: 3136d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8260ADS - original MPC8260ADS 3146d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8266ADS - MPC8266ADS 3156d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PQ2FADS - PQ2FADS-ZU or PQ2FADS-VR 3166d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8272ADS - MPC8272ADS 3172535d602Swdenk 318cf946c6dSLei Wen- Marvell Family Member 319cf946c6dSLei Wen CONFIG_SYS_MVFS - define it if you want to enable 320cf946c6dSLei Wen multiple fs option at one time 321cf946c6dSLei Wen for marvell soc family 322cf946c6dSLei Wen 323c609719bSwdenk- MPC824X Family Member (if CONFIG_MPC824X is defined) 324c609719bSwdenk Define exactly one of 325c609719bSwdenk CONFIG_MPC8240, CONFIG_MPC8245 326c609719bSwdenk 32711ccc33fSMarcel Ziswiler- 8xx CPU Options: (if using an MPC8xx CPU) 32866ca92a5Swdenk CONFIG_8xx_GCLK_FREQ - deprecated: CPU clock if 32966ca92a5Swdenk get_gclk_freq() cannot work 3305da627a4Swdenk e.g. if there is no 32KHz 3315da627a4Swdenk reference PIT/RTC clock 33266ca92a5Swdenk CONFIG_8xx_OSCLK - PLL input clock (either EXTCLK 33366ca92a5Swdenk or XTAL/EXTAL) 334c609719bSwdenk 33566ca92a5Swdenk- 859/866/885 CPU options: (if using a MPC859 or MPC866 or MPC885 CPU): 3366d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8xx_CPUCLK_MIN 3376d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8xx_CPUCLK_MAX 33866ca92a5Swdenk CONFIG_8xx_CPUCLK_DEFAULT 33975d1ea7fSwdenk See doc/README.MPC866 34075d1ea7fSwdenk 3416d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MEASURE_CPUCLK 34275d1ea7fSwdenk 34375d1ea7fSwdenk Define this to measure the actual CPU clock instead 34475d1ea7fSwdenk of relying on the correctness of the configured 34575d1ea7fSwdenk values. Mostly useful for board bringup to make sure 34675d1ea7fSwdenk the PLL is locked at the intended frequency. Note 34775d1ea7fSwdenk that this requires a (stable) reference clock (32 kHz 3486d0f6bcfSJean-Christophe PLAGNIOL-VILLARD RTC clock or CONFIG_SYS_8XX_XIN) 34975d1ea7fSwdenk 350506f3918SHeiko Schocher CONFIG_SYS_DELAYED_ICACHE 351506f3918SHeiko Schocher 352506f3918SHeiko Schocher Define this option if you want to enable the 353506f3918SHeiko Schocher ICache only when Code runs from RAM. 354506f3918SHeiko Schocher 35566412c63SKumar Gala- 85xx CPU Options: 356ffd06e02SYork Sun CONFIG_SYS_PPC64 357ffd06e02SYork Sun 358ffd06e02SYork Sun Specifies that the core is a 64-bit PowerPC implementation (implements 359ffd06e02SYork Sun the "64" category of the Power ISA). This is necessary for ePAPR 360ffd06e02SYork Sun compliance, among other possible reasons. 361ffd06e02SYork Sun 36266412c63SKumar Gala CONFIG_SYS_FSL_TBCLK_DIV 36366412c63SKumar Gala 36466412c63SKumar Gala Defines the core time base clock divider ratio compared to the 36566412c63SKumar Gala system clock. On most PQ3 devices this is 8, on newer QorIQ 36666412c63SKumar Gala devices it can be 16 or 32. The ratio varies from SoC to Soc. 36766412c63SKumar Gala 3688f29084aSKumar Gala CONFIG_SYS_FSL_PCIE_COMPAT 3698f29084aSKumar Gala 3708f29084aSKumar Gala Defines the string to utilize when trying to match PCIe device 3718f29084aSKumar Gala tree nodes for the given platform. 3728f29084aSKumar Gala 373afa6b551SPrabhakar Kushwaha CONFIG_SYS_PPC_E500_DEBUG_TLB 374afa6b551SPrabhakar Kushwaha 375afa6b551SPrabhakar Kushwaha Enables a temporary TLB entry to be used during boot to work 376afa6b551SPrabhakar Kushwaha around limitations in e500v1 and e500v2 external debugger 377afa6b551SPrabhakar Kushwaha support. This reduces the portions of the boot code where 378afa6b551SPrabhakar Kushwaha breakpoints and single stepping do not work. The value of this 379afa6b551SPrabhakar Kushwaha symbol should be set to the TLB1 entry to be used for this 380afa6b551SPrabhakar Kushwaha purpose. 381afa6b551SPrabhakar Kushwaha 38233eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510 38333eee330SScott Wood 38433eee330SScott Wood Enables a workaround for erratum A004510. If set, 38533eee330SScott Wood then CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV and 38633eee330SScott Wood CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY must be set. 38733eee330SScott Wood 38833eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV 38933eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2 (optional) 39033eee330SScott Wood 39133eee330SScott Wood Defines one or two SoC revisions (low 8 bits of SVR) 39233eee330SScott Wood for which the A004510 workaround should be applied. 39333eee330SScott Wood 39433eee330SScott Wood The rest of SVR is either not relevant to the decision 39533eee330SScott Wood of whether the erratum is present (e.g. p2040 versus 39633eee330SScott Wood p2041) or is implied by the build target, which controls 39733eee330SScott Wood whether CONFIG_SYS_FSL_ERRATUM_A004510 is set. 39833eee330SScott Wood 39933eee330SScott Wood See Freescale App Note 4493 for more information about 40033eee330SScott Wood this erratum. 40133eee330SScott Wood 40274fa22edSPrabhakar Kushwaha CONFIG_A003399_NOR_WORKAROUND 40374fa22edSPrabhakar Kushwaha Enables a workaround for IFC erratum A003399. It is only 40474fa22edSPrabhakar Kushwaha requred during NOR boot. 40574fa22edSPrabhakar Kushwaha 40633eee330SScott Wood CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY 40733eee330SScott Wood 40833eee330SScott Wood This is the value to write into CCSR offset 0x18600 40933eee330SScott Wood according to the A004510 workaround. 41033eee330SScott Wood 41164501c66SPriyanka Jain CONFIG_SYS_FSL_DSP_DDR_ADDR 41264501c66SPriyanka Jain This value denotes start offset of DDR memory which is 41364501c66SPriyanka Jain connected exclusively to the DSP cores. 41464501c66SPriyanka Jain 415765b0bdbSPriyanka Jain CONFIG_SYS_FSL_DSP_M2_RAM_ADDR 416765b0bdbSPriyanka Jain This value denotes start offset of M2 memory 417765b0bdbSPriyanka Jain which is directly connected to the DSP core. 418765b0bdbSPriyanka Jain 41964501c66SPriyanka Jain CONFIG_SYS_FSL_DSP_M3_RAM_ADDR 42064501c66SPriyanka Jain This value denotes start offset of M3 memory which is directly 42164501c66SPriyanka Jain connected to the DSP core. 42264501c66SPriyanka Jain 423765b0bdbSPriyanka Jain CONFIG_SYS_FSL_DSP_CCSRBAR_DEFAULT 424765b0bdbSPriyanka Jain This value denotes start offset of DSP CCSR space. 425765b0bdbSPriyanka Jain 426b135991aSPriyanka Jain CONFIG_SYS_FSL_SINGLE_SOURCE_CLK 427b135991aSPriyanka Jain Single Source Clock is clocking mode present in some of FSL SoC's. 428b135991aSPriyanka Jain In this mode, a single differential clock is used to supply 429b135991aSPriyanka Jain clocks to the sysclock, ddrclock and usbclock. 430b135991aSPriyanka Jain 4316cb461b4SDaniel Schwierzeck- Generic CPU options: 4326cb461b4SDaniel Schwierzeck CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN 4336cb461b4SDaniel Schwierzeck 4346cb461b4SDaniel Schwierzeck Defines the endianess of the CPU. Implementation of those 4356cb461b4SDaniel Schwierzeck values is arch specific. 4366cb461b4SDaniel Schwierzeck 4375614e71bSYork Sun CONFIG_SYS_FSL_DDR 4385614e71bSYork Sun Freescale DDR driver in use. This type of DDR controller is 4395614e71bSYork Sun found in mpc83xx, mpc85xx, mpc86xx as well as some ARM core 4405614e71bSYork Sun SoCs. 4415614e71bSYork Sun 4425614e71bSYork Sun CONFIG_SYS_FSL_DDR_ADDR 4435614e71bSYork Sun Freescale DDR memory-mapped register base. 4445614e71bSYork Sun 4455614e71bSYork Sun CONFIG_SYS_FSL_DDR_EMU 4465614e71bSYork Sun Specify emulator support for DDR. Some DDR features such as 4475614e71bSYork Sun deskew training are not available. 4485614e71bSYork Sun 4495614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN1 4505614e71bSYork Sun Freescale DDR1 controller. 4515614e71bSYork Sun 4525614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN2 4535614e71bSYork Sun Freescale DDR2 controller. 4545614e71bSYork Sun 4555614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN3 4565614e71bSYork Sun Freescale DDR3 controller. 4575614e71bSYork Sun 4589ac4ffbdSYork Sun CONFIG_SYS_FSL_DDRC_ARM_GEN3 4599ac4ffbdSYork Sun Freescale DDR3 controller for ARM-based SoCs. 4609ac4ffbdSYork Sun 4615614e71bSYork Sun CONFIG_SYS_FSL_DDR1 4625614e71bSYork Sun Board config to use DDR1. It can be enabled for SoCs with 4635614e71bSYork Sun Freescale DDR1 or DDR2 controllers, depending on the board 4645614e71bSYork Sun implemetation. 4655614e71bSYork Sun 4665614e71bSYork Sun CONFIG_SYS_FSL_DDR2 4675614e71bSYork Sun Board config to use DDR2. It can be eanbeld for SoCs with 4685614e71bSYork Sun Freescale DDR2 or DDR3 controllers, depending on the board 4695614e71bSYork Sun implementation. 4705614e71bSYork Sun 4715614e71bSYork Sun CONFIG_SYS_FSL_DDR3 4725614e71bSYork Sun Board config to use DDR3. It can be enabled for SoCs with 4735614e71bSYork Sun Freescale DDR3 controllers. 4745614e71bSYork Sun 475*1b4175d6SPrabhakar Kushwaha CONFIG_SYS_FSL_IFC_BE 476*1b4175d6SPrabhakar Kushwaha Defines the IFC controller register space as Big Endian 477*1b4175d6SPrabhakar Kushwaha 478*1b4175d6SPrabhakar Kushwaha CONFIG_SYS_FSL_IFC_LE 479*1b4175d6SPrabhakar Kushwaha Defines the IFC controller register space as Little Endian 480*1b4175d6SPrabhakar 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 905602ad3b3SJon Loeliger CONFIG_CMD_CONSOLE coninfo 906710b9938SMike Frysinger CONFIG_CMD_CRC32 * crc32 907602ad3b3SJon Loeliger CONFIG_CMD_DATE * support for RTC, date/time... 908602ad3b3SJon Loeliger CONFIG_CMD_DHCP * DHCP support 909602ad3b3SJon Loeliger CONFIG_CMD_DIAG * Diagnostics 910a7c93104SPeter Tyser CONFIG_CMD_DS4510 * ds4510 I2C gpio commands 911a7c93104SPeter Tyser CONFIG_CMD_DS4510_INFO * ds4510 I2C info command 912a7c93104SPeter Tyser CONFIG_CMD_DS4510_MEM * ds4510 I2C eeprom/sram commansd 913a7c93104SPeter Tyser CONFIG_CMD_DS4510_RST * ds4510 I2C rst command 914602ad3b3SJon Loeliger CONFIG_CMD_DTT * Digital Therm and Thermostat 915602ad3b3SJon Loeliger CONFIG_CMD_ECHO echo arguments 916246c6922SPeter Tyser CONFIG_CMD_EDITENV edit env variable 917602ad3b3SJon Loeliger CONFIG_CMD_EEPROM * EEPROM read/write support 918602ad3b3SJon Loeliger CONFIG_CMD_ELF * bootelf, bootvx 9195e2b3e0cSJoe Hershberger CONFIG_CMD_ENV_CALLBACK * display details about env callbacks 920fffad71bSJoe Hershberger CONFIG_CMD_ENV_FLAGS * display details about env flags 92188733e2cSAndrew Ruder CONFIG_CMD_ENV_EXISTS * check existence of env variable 9220c79cda0SMike Frysinger CONFIG_CMD_EXPORTENV * export the environment 92303e2ecf6SStephen Warren CONFIG_CMD_EXT2 * ext2 command support 92403e2ecf6SStephen Warren CONFIG_CMD_EXT4 * ext4 command support 925bdab39d3SMike Frysinger CONFIG_CMD_SAVEENV saveenv 926602ad3b3SJon Loeliger CONFIG_CMD_FDC * Floppy Disk Support 92703e2ecf6SStephen Warren CONFIG_CMD_FAT * FAT command support 928602ad3b3SJon Loeliger CONFIG_CMD_FDOS * Dos diskette Support 929602ad3b3SJon Loeliger CONFIG_CMD_FLASH flinfo, erase, protect 930602ad3b3SJon Loeliger CONFIG_CMD_FPGA FPGA device initialization support 9314d98b5c8SVincent Stehlé CONFIG_CMD_FUSE * Device fuse support 93253fdc7efSAnton Staaf CONFIG_CMD_GETTIME * Get time since boot 933a641b979SMike Frysinger CONFIG_CMD_GO * the 'go' command (exec code) 934a000b795SKim Phillips CONFIG_CMD_GREPENV * search environment 935bf36c5d5SSimon Glass CONFIG_CMD_HASH * calculate hash / digest 936602ad3b3SJon Loeliger CONFIG_CMD_HWFLOW * RTS/CTS hw flow control 937602ad3b3SJon Loeliger CONFIG_CMD_I2C * I2C serial bus support 938602ad3b3SJon Loeliger CONFIG_CMD_IDE * IDE harddisk support 939602ad3b3SJon Loeliger CONFIG_CMD_IMI iminfo 9408fdf1e0fSVipin Kumar CONFIG_CMD_IMLS List all images found in NOR flash 9414d98b5c8SVincent Stehlé CONFIG_CMD_IMLS_NAND * List all images found in NAND flash 942602ad3b3SJon Loeliger CONFIG_CMD_IMMAP * IMMR dump support 9430c79cda0SMike Frysinger CONFIG_CMD_IMPORTENV * import an environment 944c167cc02SJoe Hershberger CONFIG_CMD_INI * import data from an ini file into the env 945602ad3b3SJon Loeliger CONFIG_CMD_IRQ * irqinfo 946602ad3b3SJon Loeliger CONFIG_CMD_ITEST Integer/string test of 2 values 947602ad3b3SJon Loeliger CONFIG_CMD_JFFS2 * JFFS2 Support 948602ad3b3SJon Loeliger CONFIG_CMD_KGDB * kgdb 9494d98b5c8SVincent Stehlé CONFIG_CMD_LDRINFO * ldrinfo (display Blackfin loader) 950d22c338eSJoe Hershberger CONFIG_CMD_LINK_LOCAL * link-local IP address auto-configuration 951d22c338eSJoe Hershberger (169.254.*.*) 952602ad3b3SJon Loeliger CONFIG_CMD_LOADB loadb 953602ad3b3SJon Loeliger CONFIG_CMD_LOADS loads 9544d98b5c8SVincent Stehlé CONFIG_CMD_MD5SUM * print md5 message digest 95502c9aa1dSRobin Getz (requires CONFIG_CMD_MEMORY and CONFIG_MD5) 95615a33e49SSimon Glass CONFIG_CMD_MEMINFO * Display detailed memory information 957602ad3b3SJon Loeliger CONFIG_CMD_MEMORY md, mm, nm, mw, cp, cmp, crc, base, 958a2681707SWolfgang Denk loop, loopw 9594d98b5c8SVincent Stehlé CONFIG_CMD_MEMTEST * mtest 960602ad3b3SJon Loeliger CONFIG_CMD_MISC Misc functions like sleep etc 961602ad3b3SJon Loeliger CONFIG_CMD_MMC * MMC memory mapped support 962602ad3b3SJon Loeliger CONFIG_CMD_MII * MII utility commands 96368d7d651SStefan Roese CONFIG_CMD_MTDPARTS * MTD partition support 964602ad3b3SJon Loeliger CONFIG_CMD_NAND * NAND support 965602ad3b3SJon Loeliger CONFIG_CMD_NET bootp, tftpboot, rarpboot 9664d98b5c8SVincent Stehlé CONFIG_CMD_NFS NFS support 967e92739d3SPeter Tyser CONFIG_CMD_PCA953X * PCA953x I2C gpio commands 968e92739d3SPeter Tyser CONFIG_CMD_PCA953X_INFO * PCA953x I2C gpio info command 969602ad3b3SJon Loeliger CONFIG_CMD_PCI * pciinfo 970602ad3b3SJon Loeliger CONFIG_CMD_PCMCIA * PCMCIA support 971602ad3b3SJon Loeliger CONFIG_CMD_PING * send ICMP ECHO_REQUEST to network 972602ad3b3SJon Loeliger host 973602ad3b3SJon Loeliger CONFIG_CMD_PORTIO * Port I/O 974ff048ea9SKenneth Waters CONFIG_CMD_READ * Read raw data from partition 975602ad3b3SJon Loeliger CONFIG_CMD_REGINFO * Register dump 976602ad3b3SJon Loeliger CONFIG_CMD_RUN run command in env variable 977d304931fSSimon Glass CONFIG_CMD_SANDBOX * sb command to access sandbox features 978602ad3b3SJon Loeliger CONFIG_CMD_SAVES * save S record dump 979602ad3b3SJon Loeliger CONFIG_CMD_SCSI * SCSI Support 980602ad3b3SJon Loeliger CONFIG_CMD_SDRAM * print SDRAM configuration information 981602ad3b3SJon Loeliger (requires CONFIG_CMD_I2C) 982602ad3b3SJon Loeliger CONFIG_CMD_SETGETDCR Support for DCR Register access 983602ad3b3SJon Loeliger (4xx only) 984f61ec45eSEric Nelson CONFIG_CMD_SF * Read/write/erase SPI NOR flash 9854d98b5c8SVincent Stehlé CONFIG_CMD_SHA1SUM * print sha1 memory digest 98602c9aa1dSRobin Getz (requires CONFIG_CMD_MEMORY) 9877d861d95SBob Liu CONFIG_CMD_SOFTSWITCH * Soft switch setting command for BF60x 98874de7aefSWolfgang Denk CONFIG_CMD_SOURCE "source" command Support 989602ad3b3SJon Loeliger CONFIG_CMD_SPI * SPI serial bus support 9907a83af07SLuca Ceresoli CONFIG_CMD_TFTPSRV * TFTP transfer in server mode 9911fb7cd49SSimon Glass CONFIG_CMD_TFTPPUT * TFTP put command (upload) 992da83bcd7SJoe Hershberger CONFIG_CMD_TIME * run command and report execution time (ARM specific) 993da83bcd7SJoe Hershberger CONFIG_CMD_TIMER * access to the system tick timer 994602ad3b3SJon Loeliger CONFIG_CMD_USB * USB support 995602ad3b3SJon Loeliger CONFIG_CMD_CDP * Cisco Discover Protocol support 996c8339f51SMarek Vasut CONFIG_CMD_MFSL * Microblaze FSL support 9974d98b5c8SVincent Stehlé CONFIG_CMD_XIMG Load part of Multi Image 998c609719bSwdenk 999c609719bSwdenk 1000c609719bSwdenk EXAMPLE: If you want all functions except of network 1001c609719bSwdenk support you can write: 1002c609719bSwdenk 1003602ad3b3SJon Loeliger #include "config_cmd_all.h" 1004602ad3b3SJon Loeliger #undef CONFIG_CMD_NET 1005c609719bSwdenk 1006213bf8c8SGerald Van Baren Other Commands: 1007213bf8c8SGerald Van Baren fdt (flattened device tree) command: CONFIG_OF_LIBFDT 1008c609719bSwdenk 1009c609719bSwdenk Note: Don't enable the "icache" and "dcache" commands 1010602ad3b3SJon Loeliger (configuration option CONFIG_CMD_CACHE) unless you know 1011c609719bSwdenk what you (and your U-Boot users) are doing. Data 1012c609719bSwdenk cache cannot be enabled on systems like the 8xx or 1013c609719bSwdenk 8260 (where accesses to the IMMR region must be 1014c609719bSwdenk uncached), and it cannot be disabled on all other 1015c609719bSwdenk systems where we (mis-) use the data cache to hold an 1016c609719bSwdenk initial stack and some data. 1017c609719bSwdenk 1018c609719bSwdenk 1019c609719bSwdenk XXX - this list needs to get updated! 1020c609719bSwdenk 1021a5ecbe62SWolfgang Denk- Regular expression support: 1022a5ecbe62SWolfgang Denk CONFIG_REGEX 1023a5ecbe62SWolfgang Denk If this variable is defined, U-Boot is linked against 1024a5ecbe62SWolfgang Denk the SLRE (Super Light Regular Expression) library, 1025a5ecbe62SWolfgang Denk which adds regex support to some commands, as for 1026a5ecbe62SWolfgang Denk example "env grep" and "setexpr". 1027a5ecbe62SWolfgang Denk 102845ba8077SSimon Glass- Device tree: 102945ba8077SSimon Glass CONFIG_OF_CONTROL 103045ba8077SSimon Glass If this variable is defined, U-Boot will use a device tree 103145ba8077SSimon Glass to configure its devices, instead of relying on statically 103245ba8077SSimon Glass compiled #defines in the board file. This option is 103345ba8077SSimon Glass experimental and only available on a few boards. The device 103445ba8077SSimon Glass tree is available in the global data as gd->fdt_blob. 103545ba8077SSimon Glass 10362c0f79e4SSimon Glass U-Boot needs to get its device tree from somewhere. This can 10372c0f79e4SSimon Glass be done using one of the two options below: 1038bbb0b128SSimon Glass 1039bbb0b128SSimon Glass CONFIG_OF_EMBED 1040bbb0b128SSimon Glass If this variable is defined, U-Boot will embed a device tree 1041bbb0b128SSimon Glass binary in its image. This device tree file should be in the 1042bbb0b128SSimon Glass board directory and called <soc>-<board>.dts. The binary file 1043bbb0b128SSimon Glass is then picked up in board_init_f() and made available through 1044bbb0b128SSimon Glass the global data structure as gd->blob. 104545ba8077SSimon Glass 10462c0f79e4SSimon Glass CONFIG_OF_SEPARATE 10472c0f79e4SSimon Glass If this variable is defined, U-Boot will build a device tree 10482c0f79e4SSimon Glass binary. It will be called u-boot.dtb. Architecture-specific 10492c0f79e4SSimon Glass code will locate it at run-time. Generally this works by: 10502c0f79e4SSimon Glass 10512c0f79e4SSimon Glass cat u-boot.bin u-boot.dtb >image.bin 10522c0f79e4SSimon Glass 10532c0f79e4SSimon Glass and in fact, U-Boot does this for you, creating a file called 10542c0f79e4SSimon Glass u-boot-dtb.bin which is useful in the common case. You can 10552c0f79e4SSimon Glass still use the individual files if you need something more 10562c0f79e4SSimon Glass exotic. 10572c0f79e4SSimon Glass 1058c609719bSwdenk- Watchdog: 1059c609719bSwdenk CONFIG_WATCHDOG 1060c609719bSwdenk If this variable is defined, it enables watchdog 10616abe6fb6SDetlev Zundel support for the SoC. There must be support in the SoC 10626abe6fb6SDetlev Zundel specific code for a watchdog. For the 8xx and 8260 10636abe6fb6SDetlev Zundel CPUs, the SIU Watchdog feature is enabled in the SYPCR 10646abe6fb6SDetlev Zundel register. When supported for a specific SoC is 10656abe6fb6SDetlev Zundel available, then no further board specific code should 10666abe6fb6SDetlev Zundel be needed to use it. 10676abe6fb6SDetlev Zundel 10686abe6fb6SDetlev Zundel CONFIG_HW_WATCHDOG 10696abe6fb6SDetlev Zundel When using a watchdog circuitry external to the used 10706abe6fb6SDetlev Zundel SoC, then define this variable and provide board 10716abe6fb6SDetlev Zundel specific code for the "hw_watchdog_reset" function. 1072c609719bSwdenk 1073c1551ea8Sstroese- U-Boot Version: 1074c1551ea8Sstroese CONFIG_VERSION_VARIABLE 1075c1551ea8Sstroese If this variable is defined, an environment variable 1076c1551ea8Sstroese named "ver" is created by U-Boot showing the U-Boot 1077c1551ea8Sstroese version as printed by the "version" command. 1078a1ea8e51SBenoît Thébaudeau Any change to this variable will be reverted at the 1079a1ea8e51SBenoît Thébaudeau next reset. 1080c1551ea8Sstroese 1081c609719bSwdenk- Real-Time Clock: 1082c609719bSwdenk 1083602ad3b3SJon Loeliger When CONFIG_CMD_DATE is selected, the type of the RTC 1084c609719bSwdenk has to be selected, too. Define exactly one of the 1085c609719bSwdenk following options: 1086c609719bSwdenk 1087c609719bSwdenk CONFIG_RTC_MPC8xx - use internal RTC of MPC8xx 1088c609719bSwdenk CONFIG_RTC_PCF8563 - use Philips PCF8563 RTC 10894e8b7544SFabio Estevam CONFIG_RTC_MC13XXX - use MC13783 or MC13892 RTC 1090c609719bSwdenk CONFIG_RTC_MC146818 - use MC146818 RTC 10911cb8e980Swdenk CONFIG_RTC_DS1307 - use Maxim, Inc. DS1307 RTC 1092c609719bSwdenk CONFIG_RTC_DS1337 - use Maxim, Inc. DS1337 RTC 10937f70e853Swdenk CONFIG_RTC_DS1338 - use Maxim, Inc. DS1338 RTC 10943bac3513Swdenk CONFIG_RTC_DS164x - use Dallas DS164x RTC 10959536dfccSTor Krill CONFIG_RTC_ISL1208 - use Intersil ISL1208 RTC 10964c0d4c3bSwdenk CONFIG_RTC_MAX6900 - use Maxim, Inc. MAX6900 RTC 10976d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_RTC_DS1337_NOOSC - Turn off the OSC output for DS1337 109871d19f30SHeiko Schocher CONFIG_SYS_RV3029_TCR - enable trickle charger on 109971d19f30SHeiko Schocher RV3029 RTC. 1100c609719bSwdenk 1101b37c7e5eSwdenk Note that if the RTC uses I2C, then the I2C interface 1102b37c7e5eSwdenk must also be configured. See I2C Support, below. 1103b37c7e5eSwdenk 1104e92739d3SPeter Tyser- GPIO Support: 1105e92739d3SPeter Tyser CONFIG_PCA953X - use NXP's PCA953X series I2C GPIO 1106e92739d3SPeter Tyser 11075dec49caSChris Packham The CONFIG_SYS_I2C_PCA953X_WIDTH option specifies a list of 11085dec49caSChris Packham chip-ngpio pairs that tell the PCA953X driver the number of 11095dec49caSChris Packham pins supported by a particular chip. 11105dec49caSChris Packham 1111e92739d3SPeter Tyser Note that if the GPIO device uses I2C, then the I2C interface 1112e92739d3SPeter Tyser must also be configured. See I2C Support, below. 1113e92739d3SPeter Tyser 1114c609719bSwdenk- Timestamp Support: 1115c609719bSwdenk 1116c609719bSwdenk When CONFIG_TIMESTAMP is selected, the timestamp 1117c609719bSwdenk (date and time) of an image is printed by image 1118c609719bSwdenk commands like bootm or iminfo. This option is 1119602ad3b3SJon Loeliger automatically enabled when you select CONFIG_CMD_DATE . 1120c609719bSwdenk 1121923c46f9SKarl O. Pinc- Partition Labels (disklabels) Supported: 1122923c46f9SKarl O. Pinc Zero or more of the following: 1123923c46f9SKarl O. Pinc CONFIG_MAC_PARTITION Apple's MacOS partition table. 1124923c46f9SKarl O. Pinc CONFIG_DOS_PARTITION MS Dos partition table, traditional on the 1125923c46f9SKarl O. Pinc Intel architecture, USB sticks, etc. 1126923c46f9SKarl O. Pinc CONFIG_ISO_PARTITION ISO partition table, used on CDROM etc. 1127923c46f9SKarl O. Pinc CONFIG_EFI_PARTITION GPT partition table, common when EFI is the 1128923c46f9SKarl O. Pinc bootloader. Note 2TB partition limit; see 1129923c46f9SKarl O. Pinc disk/part_efi.c 1130923c46f9SKarl O. Pinc CONFIG_MTD_PARTITIONS Memory Technology Device partition table. 1131c609719bSwdenk 1132602ad3b3SJon Loeliger If IDE or SCSI support is enabled (CONFIG_CMD_IDE or 1133218ca724SWolfgang Denk CONFIG_CMD_SCSI) you must configure support for at 1134923c46f9SKarl O. Pinc least one non-MTD partition type as well. 1135c609719bSwdenk 1136c609719bSwdenk- IDE Reset method: 11374d13cbadSwdenk CONFIG_IDE_RESET_ROUTINE - this is defined in several 11384d13cbadSwdenk board configurations files but used nowhere! 1139c609719bSwdenk 11404d13cbadSwdenk CONFIG_IDE_RESET - is this is defined, IDE Reset will 11414d13cbadSwdenk be performed by calling the function 11424d13cbadSwdenk ide_set_reset(int reset) 11434d13cbadSwdenk which has to be defined in a board specific file 1144c609719bSwdenk 1145c609719bSwdenk- ATAPI Support: 1146c609719bSwdenk CONFIG_ATAPI 1147c609719bSwdenk 1148c609719bSwdenk Set this to enable ATAPI support. 1149c609719bSwdenk 1150c40b2956Swdenk- LBA48 Support 1151c40b2956Swdenk CONFIG_LBA48 1152c40b2956Swdenk 1153c40b2956Swdenk Set this to enable support for disks larger than 137GB 11544b142febSHeiko Schocher Also look at CONFIG_SYS_64BIT_LBA. 1155c40b2956Swdenk Whithout these , LBA48 support uses 32bit variables and will 'only' 1156c40b2956Swdenk support disks up to 2.1TB. 1157c40b2956Swdenk 11586d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_64BIT_LBA: 1159c40b2956Swdenk When enabled, makes the IDE subsystem use 64bit sector addresses. 1160c40b2956Swdenk Default is 32bit. 1161c40b2956Swdenk 1162c609719bSwdenk- SCSI Support: 1163c609719bSwdenk At the moment only there is only support for the 1164c609719bSwdenk SYM53C8XX SCSI controller; define 1165c609719bSwdenk CONFIG_SCSI_SYM53C8XX to enable it. 1166c609719bSwdenk 11676d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_LUN [8], CONFIG_SYS_SCSI_MAX_SCSI_ID [7] and 11686d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_DEVICE [CONFIG_SYS_SCSI_MAX_SCSI_ID * 11696d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_LUN] can be adjusted to define the 1170c609719bSwdenk maximum numbers of LUNs, SCSI ID's and target 1171c609719bSwdenk devices. 11726d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_SYM53C8XX_CCF to fix clock timing (80Mhz) 1173c609719bSwdenk 1174447c031bSStefan Reinauer The environment variable 'scsidevs' is set to the number of 1175447c031bSStefan Reinauer SCSI devices found during the last scan. 1176447c031bSStefan Reinauer 1177c609719bSwdenk- NETWORK Support (PCI): 1178682011ffSwdenk CONFIG_E1000 1179ce5207e1SKyle Moffett Support for Intel 8254x/8257x gigabit chips. 1180ce5207e1SKyle Moffett 1181ce5207e1SKyle Moffett CONFIG_E1000_SPI 1182ce5207e1SKyle Moffett Utility code for direct access to the SPI bus on Intel 8257x. 1183ce5207e1SKyle Moffett This does not do anything useful unless you set at least one 1184ce5207e1SKyle Moffett of CONFIG_CMD_E1000 or CONFIG_E1000_SPI_GENERIC. 1185ce5207e1SKyle Moffett 1186ce5207e1SKyle Moffett CONFIG_E1000_SPI_GENERIC 1187ce5207e1SKyle Moffett Allow generic access to the SPI bus on the Intel 8257x, for 1188ce5207e1SKyle Moffett example with the "sspi" command. 1189ce5207e1SKyle Moffett 1190ce5207e1SKyle Moffett CONFIG_CMD_E1000 1191ce5207e1SKyle Moffett Management command for E1000 devices. When used on devices 1192ce5207e1SKyle Moffett with SPI support you can reprogram the EEPROM from U-Boot. 1193682011ffSwdenk 1194ac3315c2SAndre Schwarz CONFIG_E1000_FALLBACK_MAC 119511ccc33fSMarcel Ziswiler default MAC for empty EEPROM after production. 1196ac3315c2SAndre Schwarz 1197c609719bSwdenk CONFIG_EEPRO100 1198c609719bSwdenk Support for Intel 82557/82559/82559ER chips. 119911ccc33fSMarcel Ziswiler Optional CONFIG_EEPRO100_SROM_WRITE enables EEPROM 1200c609719bSwdenk write routine for first time initialisation. 1201c609719bSwdenk 1202c609719bSwdenk CONFIG_TULIP 1203c609719bSwdenk Support for Digital 2114x chips. 1204c609719bSwdenk Optional CONFIG_TULIP_SELECT_MEDIA for board specific 1205c609719bSwdenk modem chip initialisation (KS8761/QS6611). 1206c609719bSwdenk 1207c609719bSwdenk CONFIG_NATSEMI 1208c609719bSwdenk Support for National dp83815 chips. 1209c609719bSwdenk 1210c609719bSwdenk CONFIG_NS8382X 1211c609719bSwdenk Support for National dp8382[01] gigabit chips. 1212c609719bSwdenk 121345219c46Swdenk- NETWORK Support (other): 121445219c46Swdenk 1215c041e9d2SJens Scharsig CONFIG_DRIVER_AT91EMAC 1216c041e9d2SJens Scharsig Support for AT91RM9200 EMAC. 1217c041e9d2SJens Scharsig 1218c041e9d2SJens Scharsig CONFIG_RMII 1219c041e9d2SJens Scharsig Define this to use reduced MII inteface 1220c041e9d2SJens Scharsig 1221c041e9d2SJens Scharsig CONFIG_DRIVER_AT91EMAC_QUIET 1222c041e9d2SJens Scharsig If this defined, the driver is quiet. 1223c041e9d2SJens Scharsig The driver doen't show link status messages. 1224c041e9d2SJens Scharsig 1225efdd7319SRob Herring CONFIG_CALXEDA_XGMAC 1226efdd7319SRob Herring Support for the Calxeda XGMAC device 1227efdd7319SRob Herring 12283bb46d23SAshok CONFIG_LAN91C96 122945219c46Swdenk Support for SMSC's LAN91C96 chips. 123045219c46Swdenk 123145219c46Swdenk CONFIG_LAN91C96_BASE 123245219c46Swdenk Define this to hold the physical address 123345219c46Swdenk of the LAN91C96's I/O space 123445219c46Swdenk 123545219c46Swdenk CONFIG_LAN91C96_USE_32_BIT 123645219c46Swdenk Define this to enable 32 bit addressing 123745219c46Swdenk 12383bb46d23SAshok CONFIG_SMC91111 1239f39748aeSwdenk Support for SMSC's LAN91C111 chip 1240f39748aeSwdenk 1241f39748aeSwdenk CONFIG_SMC91111_BASE 1242f39748aeSwdenk Define this to hold the physical address 1243f39748aeSwdenk of the device (I/O space) 1244f39748aeSwdenk 1245f39748aeSwdenk CONFIG_SMC_USE_32_BIT 1246f39748aeSwdenk Define this if data bus is 32 bits 1247f39748aeSwdenk 1248f39748aeSwdenk CONFIG_SMC_USE_IOFUNCS 1249f39748aeSwdenk Define this to use i/o functions instead of macros 1250f39748aeSwdenk (some hardware wont work with macros) 1251f39748aeSwdenk 1252dc02badaSHeiko Schocher CONFIG_DRIVER_TI_EMAC 1253dc02badaSHeiko Schocher Support for davinci emac 1254dc02badaSHeiko Schocher 1255dc02badaSHeiko Schocher CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT 1256dc02badaSHeiko Schocher Define this if you have more then 3 PHYs. 1257dc02badaSHeiko Schocher 1258b3dbf4a5SMacpaul Lin CONFIG_FTGMAC100 1259b3dbf4a5SMacpaul Lin Support for Faraday's FTGMAC100 Gigabit SoC Ethernet 1260b3dbf4a5SMacpaul Lin 1261b3dbf4a5SMacpaul Lin CONFIG_FTGMAC100_EGIGA 1262b3dbf4a5SMacpaul Lin Define this to use GE link update with gigabit PHY. 1263b3dbf4a5SMacpaul Lin Define this if FTGMAC100 is connected to gigabit PHY. 1264b3dbf4a5SMacpaul Lin If your system has 10/100 PHY only, it might not occur 1265b3dbf4a5SMacpaul Lin wrong behavior. Because PHY usually return timeout or 1266b3dbf4a5SMacpaul Lin useless data when polling gigabit status and gigabit 1267b3dbf4a5SMacpaul Lin control registers. This behavior won't affect the 1268b3dbf4a5SMacpaul Lin correctnessof 10/100 link speed update. 1269b3dbf4a5SMacpaul Lin 1270c2fff331SMike Rapoport CONFIG_SMC911X 1271557b377dSJens Gehrlein Support for SMSC's LAN911x and LAN921x chips 1272557b377dSJens Gehrlein 1273c2fff331SMike Rapoport CONFIG_SMC911X_BASE 1274557b377dSJens Gehrlein Define this to hold the physical address 1275557b377dSJens Gehrlein of the device (I/O space) 1276557b377dSJens Gehrlein 1277c2fff331SMike Rapoport CONFIG_SMC911X_32_BIT 1278557b377dSJens Gehrlein Define this if data bus is 32 bits 1279557b377dSJens Gehrlein 1280c2fff331SMike Rapoport CONFIG_SMC911X_16_BIT 1281557b377dSJens Gehrlein Define this if data bus is 16 bits. If your processor 1282557b377dSJens Gehrlein automatically converts one 32 bit word to two 16 bit 1283c2fff331SMike Rapoport words you may also try CONFIG_SMC911X_32_BIT. 1284557b377dSJens Gehrlein 12853d0075faSYoshihiro Shimoda CONFIG_SH_ETHER 12863d0075faSYoshihiro Shimoda Support for Renesas on-chip Ethernet controller 12873d0075faSYoshihiro Shimoda 12883d0075faSYoshihiro Shimoda CONFIG_SH_ETHER_USE_PORT 12893d0075faSYoshihiro Shimoda Define the number of ports to be used 12903d0075faSYoshihiro Shimoda 12913d0075faSYoshihiro Shimoda CONFIG_SH_ETHER_PHY_ADDR 12923d0075faSYoshihiro Shimoda Define the ETH PHY's address 12933d0075faSYoshihiro Shimoda 129468260aabSYoshihiro Shimoda CONFIG_SH_ETHER_CACHE_WRITEBACK 129568260aabSYoshihiro Shimoda If this option is set, the driver enables cache flush. 129668260aabSYoshihiro Shimoda 12975e124724SVadim Bendebury- TPM Support: 129890899cc0SChe-liang Chiou CONFIG_TPM 129990899cc0SChe-liang Chiou Support TPM devices. 130090899cc0SChe-liang Chiou 13011b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C 13021b393db5STom Wai-Hong Tam Support for i2c bus TPM devices. Only one device 13031b393db5STom Wai-Hong Tam per system is supported at this time. 13041b393db5STom Wai-Hong Tam 13051b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_BUS_NUMBER 13061b393db5STom Wai-Hong Tam Define the the i2c bus number for the TPM device 13071b393db5STom Wai-Hong Tam 13081b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_SLAVE_ADDRESS 13091b393db5STom Wai-Hong Tam Define the TPM's address on the i2c bus 13101b393db5STom Wai-Hong Tam 13111b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_BURST_LIMITATION 13121b393db5STom Wai-Hong Tam Define the burst count bytes upper limit 13131b393db5STom Wai-Hong Tam 1314c01939c7SDirk Eibach CONFIG_TPM_ATMEL_TWI 1315c01939c7SDirk Eibach Support for Atmel TWI TPM device. Requires I2C support. 1316c01939c7SDirk Eibach 131790899cc0SChe-liang Chiou CONFIG_TPM_TIS_LPC 13185e124724SVadim Bendebury Support for generic parallel port TPM devices. Only one device 13195e124724SVadim Bendebury per system is supported at this time. 13205e124724SVadim Bendebury 13215e124724SVadim Bendebury CONFIG_TPM_TIS_BASE_ADDRESS 13225e124724SVadim Bendebury Base address where the generic TPM device is mapped 13235e124724SVadim Bendebury to. Contemporary x86 systems usually map it at 13245e124724SVadim Bendebury 0xfed40000. 13255e124724SVadim Bendebury 1326be6c1529SReinhard Pfau CONFIG_CMD_TPM 1327be6c1529SReinhard Pfau Add tpm monitor functions. 1328be6c1529SReinhard Pfau Requires CONFIG_TPM. If CONFIG_TPM_AUTH_SESSIONS is set, also 1329be6c1529SReinhard Pfau provides monitor access to authorized functions. 1330be6c1529SReinhard Pfau 1331be6c1529SReinhard Pfau CONFIG_TPM 1332be6c1529SReinhard Pfau Define this to enable the TPM support library which provides 1333be6c1529SReinhard Pfau functional interfaces to some TPM commands. 1334be6c1529SReinhard Pfau Requires support for a TPM device. 1335be6c1529SReinhard Pfau 1336be6c1529SReinhard Pfau CONFIG_TPM_AUTH_SESSIONS 1337be6c1529SReinhard Pfau Define this to enable authorized functions in the TPM library. 1338be6c1529SReinhard Pfau Requires CONFIG_TPM and CONFIG_SHA1. 1339be6c1529SReinhard Pfau 1340c609719bSwdenk- USB Support: 1341c609719bSwdenk At the moment only the UHCI host controller is 13424d13cbadSwdenk supported (PIP405, MIP405, MPC5200); define 1343c609719bSwdenk CONFIG_USB_UHCI to enable it. 1344c609719bSwdenk define CONFIG_USB_KEYBOARD to enable the USB Keyboard 134530d56faeSwdenk and define CONFIG_USB_STORAGE to enable the USB 1346c609719bSwdenk storage devices. 1347c609719bSwdenk Note: 1348c609719bSwdenk Supported are USB Keyboards and USB Floppy drives 1349c609719bSwdenk (TEAC FD-05PUB). 13504d13cbadSwdenk MPC5200 USB requires additional defines: 13514d13cbadSwdenk CONFIG_USB_CLOCK 13524d13cbadSwdenk for 528 MHz Clock: 0x0001bbbb 1353307ecb6dSEric Millbrandt CONFIG_PSC3_USB 1354307ecb6dSEric Millbrandt for USB on PSC3 13554d13cbadSwdenk CONFIG_USB_CONFIG 13564d13cbadSwdenk for differential drivers: 0x00001000 13574d13cbadSwdenk for single ended drivers: 0x00005000 1358307ecb6dSEric Millbrandt for differential drivers on PSC3: 0x00000100 1359307ecb6dSEric Millbrandt for single ended drivers on PSC3: 0x00004100 13606d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_EVENT_POLL 1361fdcfaa1bSZhang Wei May be defined to allow interrupt polling 1362fdcfaa1bSZhang Wei instead of using asynchronous interrupts 13634d13cbadSwdenk 13649ab4ce22SSimon Glass CONFIG_USB_EHCI_TXFIFO_THRESH enables setting of the 13659ab4ce22SSimon Glass txfilltuning field in the EHCI controller on reset. 13669ab4ce22SSimon Glass 1367aa155058SKuo-Jung Su CONFIG_USB_HUB_MIN_POWER_ON_DELAY defines the minimum 1368aa155058SKuo-Jung Su interval for usb hub power-on delay.(minimum 100msec) 1369aa155058SKuo-Jung Su 137016c8d5e7SWolfgang Denk- USB Device: 137116c8d5e7SWolfgang Denk Define the below if you wish to use the USB console. 137216c8d5e7SWolfgang Denk Once firmware is rebuilt from a serial console issue the 137316c8d5e7SWolfgang Denk command "setenv stdin usbtty; setenv stdout usbtty" and 137411ccc33fSMarcel Ziswiler attach your USB cable. The Unix command "dmesg" should print 137516c8d5e7SWolfgang Denk it has found a new device. The environment variable usbtty 137616c8d5e7SWolfgang Denk can be set to gserial or cdc_acm to enable your device to 137716c8d5e7SWolfgang Denk appear to a USB host as a Linux gserial device or a 137816c8d5e7SWolfgang Denk Common Device Class Abstract Control Model serial device. 137916c8d5e7SWolfgang Denk If you select usbtty = gserial you should be able to enumerate 138016c8d5e7SWolfgang Denk a Linux host by 138116c8d5e7SWolfgang Denk # modprobe usbserial vendor=0xVendorID product=0xProductID 138216c8d5e7SWolfgang Denk else if using cdc_acm, simply setting the environment 138316c8d5e7SWolfgang Denk variable usbtty to be cdc_acm should suffice. The following 138416c8d5e7SWolfgang Denk might be defined in YourBoardName.h 138516c8d5e7SWolfgang Denk 138616c8d5e7SWolfgang Denk CONFIG_USB_DEVICE 138716c8d5e7SWolfgang Denk Define this to build a UDC device 138816c8d5e7SWolfgang Denk 138916c8d5e7SWolfgang Denk CONFIG_USB_TTY 139016c8d5e7SWolfgang Denk Define this to have a tty type of device available to 139116c8d5e7SWolfgang Denk talk to the UDC device 139216c8d5e7SWolfgang Denk 1393f9da0f89SVipin KUMAR CONFIG_USBD_HS 1394f9da0f89SVipin KUMAR Define this to enable the high speed support for usb 1395f9da0f89SVipin KUMAR device and usbtty. If this feature is enabled, a routine 1396f9da0f89SVipin KUMAR int is_usbd_high_speed(void) 1397f9da0f89SVipin KUMAR also needs to be defined by the driver to dynamically poll 1398f9da0f89SVipin KUMAR whether the enumeration has succeded at high speed or full 1399f9da0f89SVipin KUMAR speed. 1400f9da0f89SVipin KUMAR 14016d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CONSOLE_IS_IN_ENV 140216c8d5e7SWolfgang Denk Define this if you want stdin, stdout &/or stderr to 140316c8d5e7SWolfgang Denk be set to usbtty. 140416c8d5e7SWolfgang Denk 140516c8d5e7SWolfgang Denk mpc8xx: 14066d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_EXTC_CLK 0xBLAH 140716c8d5e7SWolfgang Denk Derive USB clock from external clock "blah" 14086d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_USB_EXTC_CLK 0x02 140916c8d5e7SWolfgang Denk 14106d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_BRG_CLK 0xBLAH 141116c8d5e7SWolfgang Denk Derive USB clock from brgclk 14126d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_USB_BRG_CLK 0x04 141316c8d5e7SWolfgang Denk 141416c8d5e7SWolfgang Denk If you have a USB-IF assigned VendorID then you may wish to 141516c8d5e7SWolfgang Denk define your own vendor specific values either in BoardName.h 141616c8d5e7SWolfgang Denk or directly in usbd_vendor_info.h. If you don't define 141716c8d5e7SWolfgang Denk CONFIG_USBD_MANUFACTURER, CONFIG_USBD_PRODUCT_NAME, 141816c8d5e7SWolfgang Denk CONFIG_USBD_VENDORID and CONFIG_USBD_PRODUCTID, then U-Boot 141916c8d5e7SWolfgang Denk should pretend to be a Linux device to it's target host. 142016c8d5e7SWolfgang Denk 142116c8d5e7SWolfgang Denk CONFIG_USBD_MANUFACTURER 142216c8d5e7SWolfgang Denk Define this string as the name of your company for 142316c8d5e7SWolfgang Denk - CONFIG_USBD_MANUFACTURER "my company" 142416c8d5e7SWolfgang Denk 142516c8d5e7SWolfgang Denk CONFIG_USBD_PRODUCT_NAME 142616c8d5e7SWolfgang Denk Define this string as the name of your product 142716c8d5e7SWolfgang Denk - CONFIG_USBD_PRODUCT_NAME "acme usb device" 142816c8d5e7SWolfgang Denk 142916c8d5e7SWolfgang Denk CONFIG_USBD_VENDORID 143016c8d5e7SWolfgang Denk Define this as your assigned Vendor ID from the USB 143116c8d5e7SWolfgang Denk Implementors Forum. This *must* be a genuine Vendor ID 143216c8d5e7SWolfgang Denk to avoid polluting the USB namespace. 143316c8d5e7SWolfgang Denk - CONFIG_USBD_VENDORID 0xFFFF 143416c8d5e7SWolfgang Denk 143516c8d5e7SWolfgang Denk CONFIG_USBD_PRODUCTID 143616c8d5e7SWolfgang Denk Define this as the unique Product ID 143716c8d5e7SWolfgang Denk for your device 143816c8d5e7SWolfgang Denk - CONFIG_USBD_PRODUCTID 0xFFFF 1439c609719bSwdenk 1440351e9b20SPrzemyslaw Marczak Some USB device drivers may need to check USB cable attachment. 1441351e9b20SPrzemyslaw Marczak In this case you can enable following config in BoardName.h: 1442351e9b20SPrzemyslaw Marczak CONFIG_USB_CABLE_CHECK 1443351e9b20SPrzemyslaw Marczak This enables function definition: 1444351e9b20SPrzemyslaw Marczak - usb_cable_connected() in include/usb.h 1445351e9b20SPrzemyslaw Marczak Implementation of this function is board-specific. 1446351e9b20SPrzemyslaw Marczak 1447d70a560fSIgor Grinberg- ULPI Layer Support: 1448d70a560fSIgor Grinberg The ULPI (UTMI Low Pin (count) Interface) PHYs are supported via 1449d70a560fSIgor Grinberg the generic ULPI layer. The generic layer accesses the ULPI PHY 1450d70a560fSIgor Grinberg via the platform viewport, so you need both the genric layer and 1451d70a560fSIgor Grinberg the viewport enabled. Currently only Chipidea/ARC based 1452d70a560fSIgor Grinberg viewport is supported. 1453d70a560fSIgor Grinberg To enable the ULPI layer support, define CONFIG_USB_ULPI and 1454d70a560fSIgor Grinberg CONFIG_USB_ULPI_VIEWPORT in your board configuration file. 14556d365ea0SLucas Stach If your ULPI phy needs a different reference clock than the 14566d365ea0SLucas Stach standard 24 MHz then you have to define CONFIG_ULPI_REF_CLK to 14576d365ea0SLucas Stach the appropriate value in Hz. 1458c609719bSwdenk 1459c609719bSwdenk- MMC Support: 1460c609719bSwdenk The MMC controller on the Intel PXA is supported. To 1461c609719bSwdenk enable this define CONFIG_MMC. The MMC can be 1462c609719bSwdenk accessed from the boot prompt by mapping the device 1463c609719bSwdenk to physical memory similar to flash. Command line is 1464602ad3b3SJon Loeliger enabled with CONFIG_CMD_MMC. The MMC driver also works with 1465602ad3b3SJon Loeliger the FAT fs. This is enabled with CONFIG_CMD_FAT. 1466c609719bSwdenk 1467afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF 1468afb35666SYoshihiro Shimoda Support for Renesas on-chip MMCIF controller 1469afb35666SYoshihiro Shimoda 1470afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF_ADDR 1471afb35666SYoshihiro Shimoda Define the base address of MMCIF registers 1472afb35666SYoshihiro Shimoda 1473afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF_CLK 1474afb35666SYoshihiro Shimoda Define the clock frequency for MMCIF 1475afb35666SYoshihiro Shimoda 1476b3ba6e94STom Rini- USB Device Firmware Update (DFU) class support: 1477b3ba6e94STom Rini CONFIG_DFU_FUNCTION 1478b3ba6e94STom Rini This enables the USB portion of the DFU USB class 1479b3ba6e94STom Rini 1480b3ba6e94STom Rini CONFIG_CMD_DFU 1481b3ba6e94STom Rini This enables the command "dfu" which is used to have 1482b3ba6e94STom Rini U-Boot create a DFU class device via USB. This command 1483b3ba6e94STom Rini requires that the "dfu_alt_info" environment variable be 1484b3ba6e94STom Rini set and define the alt settings to expose to the host. 1485b3ba6e94STom Rini 1486b3ba6e94STom Rini CONFIG_DFU_MMC 1487b3ba6e94STom Rini This enables support for exposing (e)MMC devices via DFU. 1488b3ba6e94STom Rini 1489c6631764SPantelis Antoniou CONFIG_DFU_NAND 1490c6631764SPantelis Antoniou This enables support for exposing NAND devices via DFU. 1491c6631764SPantelis Antoniou 1492a9479f04SAfzal Mohammed CONFIG_DFU_RAM 1493a9479f04SAfzal Mohammed This enables support for exposing RAM via DFU. 1494a9479f04SAfzal Mohammed Note: DFU spec refer to non-volatile memory usage, but 1495a9479f04SAfzal Mohammed allow usages beyond the scope of spec - here RAM usage, 1496a9479f04SAfzal Mohammed one that would help mostly the developer. 1497a9479f04SAfzal Mohammed 1498e7e75c70SHeiko Schocher CONFIG_SYS_DFU_DATA_BUF_SIZE 1499e7e75c70SHeiko Schocher Dfu transfer uses a buffer before writing data to the 1500e7e75c70SHeiko Schocher raw storage device. Make the size (in bytes) of this buffer 1501e7e75c70SHeiko Schocher configurable. The size of this buffer is also configurable 1502e7e75c70SHeiko Schocher through the "dfu_bufsiz" environment variable. 1503e7e75c70SHeiko Schocher 1504ea2453d5SPantelis Antoniou CONFIG_SYS_DFU_MAX_FILE_SIZE 1505ea2453d5SPantelis Antoniou When updating files rather than the raw storage device, 1506ea2453d5SPantelis Antoniou we use a static buffer to copy the file into and then write 1507ea2453d5SPantelis Antoniou the buffer once we've been given the whole file. Define 1508ea2453d5SPantelis Antoniou this to the maximum filesize (in bytes) for the buffer. 1509ea2453d5SPantelis Antoniou Default is 4 MiB if undefined. 1510ea2453d5SPantelis Antoniou 15116705d81eSwdenk- Journaling Flash filesystem support: 15126705d81eSwdenk CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE, 15136705d81eSwdenk CONFIG_JFFS2_NAND_DEV 15146705d81eSwdenk Define these for a default partition on a NAND device 15156705d81eSwdenk 15166d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS2_FIRST_SECTOR, 15176d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS2_FIRST_BANK, CONFIG_SYS_JFFS2_NUM_BANKS 15186705d81eSwdenk Define these for a default partition on a NOR device 15196705d81eSwdenk 15206d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS_CUSTOM_PART 15216705d81eSwdenk Define this to create an own partition. You have to provide a 15226705d81eSwdenk function struct part_info* jffs2_part_info(int part_num) 15236705d81eSwdenk 15246705d81eSwdenk If you define only one JFFS2 partition you may also want to 15256d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_JFFS_SINGLE_PART 1 15266705d81eSwdenk to disable the command chpart. This is the default when you 15276705d81eSwdenk have not defined a custom partition 15286705d81eSwdenk 1529c30a15e5SDonggeun Kim- FAT(File Allocation Table) filesystem write function support: 1530c30a15e5SDonggeun Kim CONFIG_FAT_WRITE 1531656f4c65SDonggeun Kim 1532656f4c65SDonggeun Kim Define this to enable support for saving memory data as a 1533656f4c65SDonggeun Kim file in FAT formatted partition. 1534656f4c65SDonggeun Kim 1535656f4c65SDonggeun Kim This will also enable the command "fatwrite" enabling the 1536656f4c65SDonggeun Kim user to write files to FAT. 1537c30a15e5SDonggeun Kim 153884cd9327SGabe BlackCBFS (Coreboot Filesystem) support 153984cd9327SGabe Black CONFIG_CMD_CBFS 154084cd9327SGabe Black 154184cd9327SGabe Black Define this to enable support for reading from a Coreboot 154284cd9327SGabe Black filesystem. Available commands are cbfsinit, cbfsinfo, cbfsls 154384cd9327SGabe Black and cbfsload. 154484cd9327SGabe Black 1545c609719bSwdenk- Keyboard Support: 1546c609719bSwdenk CONFIG_ISA_KEYBOARD 1547c609719bSwdenk 1548c609719bSwdenk Define this to enable standard (PC-Style) keyboard 1549c609719bSwdenk support 1550c609719bSwdenk 1551c609719bSwdenk CONFIG_I8042_KBD 1552c609719bSwdenk Standard PC keyboard driver with US (is default) and 1553c609719bSwdenk GERMAN key layout (switch via environment 'keymap=de') support. 1554c609719bSwdenk Export function i8042_kbd_init, i8042_tstc and i8042_getc 1555c609719bSwdenk for cfb_console. Supports cursor blinking. 1556c609719bSwdenk 1557713cb680SHung-ying Tyan CONFIG_CROS_EC_KEYB 1558713cb680SHung-ying Tyan Enables a Chrome OS keyboard using the CROS_EC interface. 1559713cb680SHung-ying Tyan This uses CROS_EC to communicate with a second microcontroller 1560713cb680SHung-ying Tyan which provides key scans on request. 1561713cb680SHung-ying Tyan 1562c609719bSwdenk- Video support: 1563c609719bSwdenk CONFIG_VIDEO 1564c609719bSwdenk 1565c609719bSwdenk Define this to enable video support (for output to 1566c609719bSwdenk video). 1567c609719bSwdenk 1568c609719bSwdenk CONFIG_VIDEO_CT69000 1569c609719bSwdenk 1570c609719bSwdenk Enable Chips & Technologies 69000 Video chip 1571c609719bSwdenk 1572c609719bSwdenk CONFIG_VIDEO_SMI_LYNXEM 1573eeb1b77bSwdenk Enable Silicon Motion SMI 712/710/810 Video chip. The 1574eeb1b77bSwdenk video output is selected via environment 'videoout' 1575eeb1b77bSwdenk (1 = LCD and 2 = CRT). If videoout is undefined, CRT is 1576eeb1b77bSwdenk assumed. 1577c609719bSwdenk 1578eeb1b77bSwdenk For the CT69000 and SMI_LYNXEM drivers, videomode is 157911ccc33fSMarcel Ziswiler selected via environment 'videomode'. Two different ways 1580eeb1b77bSwdenk are possible: 1581eeb1b77bSwdenk - "videomode=num" 'num' is a standard LiLo mode numbers. 1582eeb1b77bSwdenk Following standard modes are supported (* is default): 1583eeb1b77bSwdenk 1584eeb1b77bSwdenk Colors 640x480 800x600 1024x768 1152x864 1280x1024 1585eeb1b77bSwdenk -------------+--------------------------------------------- 1586eeb1b77bSwdenk 8 bits | 0x301* 0x303 0x305 0x161 0x307 1587eeb1b77bSwdenk 15 bits | 0x310 0x313 0x316 0x162 0x319 1588eeb1b77bSwdenk 16 bits | 0x311 0x314 0x317 0x163 0x31A 1589eeb1b77bSwdenk 24 bits | 0x312 0x315 0x318 ? 0x31B 1590eeb1b77bSwdenk -------------+--------------------------------------------- 1591c609719bSwdenk (i.e. setenv videomode 317; saveenv; reset;) 1592c609719bSwdenk 1593eeb1b77bSwdenk - "videomode=bootargs" all the video parameters are parsed 15947817cb20SMarcel Ziswiler from the bootargs. (See drivers/video/videomodes.c) 1595eeb1b77bSwdenk 1596eeb1b77bSwdenk 1597a6c7ad2fSwdenk CONFIG_VIDEO_SED13806 1598a6c7ad2fSwdenk Enable Epson SED13806 driver. This driver supports 8bpp 1599a6c7ad2fSwdenk and 16bpp modes defined by CONFIG_VIDEO_SED13806_8BPP 1600a6c7ad2fSwdenk or CONFIG_VIDEO_SED13806_16BPP 1601a6c7ad2fSwdenk 16027d3053fbSTimur Tabi CONFIG_FSL_DIU_FB 16037d3053fbSTimur Tabi Enable the Freescale DIU video driver. Reference boards for 16047d3053fbSTimur Tabi SOCs that have a DIU should define this macro to enable DIU 16057d3053fbSTimur Tabi support, and should also define these other macros: 16067d3053fbSTimur Tabi 16077d3053fbSTimur Tabi CONFIG_SYS_DIU_ADDR 16087d3053fbSTimur Tabi CONFIG_VIDEO 16097d3053fbSTimur Tabi CONFIG_CMD_BMP 16107d3053fbSTimur Tabi CONFIG_CFB_CONSOLE 16117d3053fbSTimur Tabi CONFIG_VIDEO_SW_CURSOR 16127d3053fbSTimur Tabi CONFIG_VGA_AS_SINGLE_DEVICE 16137d3053fbSTimur Tabi CONFIG_VIDEO_LOGO 16147d3053fbSTimur Tabi CONFIG_VIDEO_BMP_LOGO 16157d3053fbSTimur Tabi 1616ba8e76bdSTimur Tabi The DIU driver will look for the 'video-mode' environment 1617ba8e76bdSTimur Tabi variable, and if defined, enable the DIU as a console during 1618ba8e76bdSTimur Tabi boot. See the documentation file README.video for a 1619ba8e76bdSTimur Tabi description of this variable. 16207d3053fbSTimur Tabi 1621058d59b0SSimon Glass CONFIG_VIDEO_VGA 1622058d59b0SSimon Glass 1623058d59b0SSimon Glass Enable the VGA video / BIOS for x86. The alternative if you 1624058d59b0SSimon Glass are using coreboot is to use the coreboot frame buffer 1625058d59b0SSimon Glass driver. 1626058d59b0SSimon Glass 1627058d59b0SSimon Glass 1628682011ffSwdenk- Keyboard Support: 1629682011ffSwdenk CONFIG_KEYBOARD 1630682011ffSwdenk 1631682011ffSwdenk Define this to enable a custom keyboard support. 1632682011ffSwdenk This simply calls drv_keyboard_init() which must be 1633682011ffSwdenk defined in your board-specific files. 1634682011ffSwdenk The only board using this so far is RBC823. 1635a6c7ad2fSwdenk 1636c609719bSwdenk- LCD Support: CONFIG_LCD 1637c609719bSwdenk 1638c609719bSwdenk Define this to enable LCD support (for output to LCD 1639c609719bSwdenk display); also select one of the supported displays 1640c609719bSwdenk by defining one of these: 1641c609719bSwdenk 164239cf4804SStelian Pop CONFIG_ATMEL_LCD: 164339cf4804SStelian Pop 164439cf4804SStelian Pop HITACHI TX09D70VM1CCA, 3.5", 240x320. 164539cf4804SStelian Pop 1646fd3103bbSwdenk CONFIG_NEC_NL6448AC33: 1647c609719bSwdenk 1648fd3103bbSwdenk NEC NL6448AC33-18. Active, color, single scan. 1649c609719bSwdenk 1650fd3103bbSwdenk CONFIG_NEC_NL6448BC20 1651c609719bSwdenk 1652fd3103bbSwdenk NEC NL6448BC20-08. 6.5", 640x480. 1653fd3103bbSwdenk Active, color, single scan. 1654fd3103bbSwdenk 1655fd3103bbSwdenk CONFIG_NEC_NL6448BC33_54 1656fd3103bbSwdenk 1657fd3103bbSwdenk NEC NL6448BC33-54. 10.4", 640x480. 1658c609719bSwdenk Active, color, single scan. 1659c609719bSwdenk 1660c609719bSwdenk CONFIG_SHARP_16x9 1661c609719bSwdenk 1662c609719bSwdenk Sharp 320x240. Active, color, single scan. 1663c609719bSwdenk It isn't 16x9, and I am not sure what it is. 1664c609719bSwdenk 1665c609719bSwdenk CONFIG_SHARP_LQ64D341 1666c609719bSwdenk 1667c609719bSwdenk Sharp LQ64D341 display, 640x480. 1668c609719bSwdenk Active, color, single scan. 1669c609719bSwdenk 1670c609719bSwdenk CONFIG_HLD1045 1671c609719bSwdenk 1672c609719bSwdenk HLD1045 display, 640x480. 1673c609719bSwdenk Active, color, single scan. 1674c609719bSwdenk 1675c609719bSwdenk CONFIG_OPTREX_BW 1676c609719bSwdenk 1677c609719bSwdenk Optrex CBL50840-2 NF-FW 99 22 M5 1678c609719bSwdenk or 1679c609719bSwdenk Hitachi LMG6912RPFC-00T 1680c609719bSwdenk or 1681c609719bSwdenk Hitachi SP14Q002 1682c609719bSwdenk 1683c609719bSwdenk 320x240. Black & white. 1684c609719bSwdenk 1685c609719bSwdenk Normally display is black on white background; define 16866d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_WHITE_ON_BLACK to get it inverted. 1687c609719bSwdenk 1688676d319eSSimon Glass CONFIG_LCD_ALIGNMENT 1689676d319eSSimon Glass 1690676d319eSSimon Glass Normally the LCD is page-aligned (tyically 4KB). If this is 1691676d319eSSimon Glass defined then the LCD will be aligned to this value instead. 1692676d319eSSimon Glass For ARM it is sometimes useful to use MMU_SECTION_SIZE 1693676d319eSSimon Glass here, since it is cheaper to change data cache settings on 1694676d319eSSimon Glass a per-section basis. 1695676d319eSSimon Glass 16960d89efefSSimon Glass CONFIG_CONSOLE_SCROLL_LINES 16970d89efefSSimon Glass 16980d89efefSSimon Glass When the console need to be scrolled, this is the number of 16990d89efefSSimon Glass lines to scroll by. It defaults to 1. Increasing this makes 17000d89efefSSimon Glass the console jump but can help speed up operation when scrolling 17010d89efefSSimon Glass is slow. 1702676d319eSSimon Glass 170345d7f525STom Wai-Hong Tam CONFIG_LCD_BMP_RLE8 170445d7f525STom Wai-Hong Tam 170545d7f525STom Wai-Hong Tam Support drawing of RLE8-compressed bitmaps on the LCD. 170645d7f525STom Wai-Hong Tam 1707735987c5STom Wai-Hong Tam CONFIG_I2C_EDID 1708735987c5STom Wai-Hong Tam 1709735987c5STom Wai-Hong Tam Enables an 'i2c edid' command which can read EDID 1710735987c5STom Wai-Hong Tam information over I2C from an attached LCD display. 1711735987c5STom Wai-Hong Tam 17127152b1d0Swdenk- Splash Screen Support: CONFIG_SPLASH_SCREEN 1713d791b1dcSwdenk 1714d791b1dcSwdenk If this option is set, the environment is checked for 1715d791b1dcSwdenk a variable "splashimage". If found, the usual display 1716d791b1dcSwdenk of logo, copyright and system information on the LCD 1717e94d2cd9Swdenk is suppressed and the BMP image at the address 1718d791b1dcSwdenk specified in "splashimage" is loaded instead. The 1719d791b1dcSwdenk console is redirected to the "nulldev", too. This 1720d791b1dcSwdenk allows for a "silent" boot where a splash screen is 1721d791b1dcSwdenk loaded very quickly after power-on. 1722d791b1dcSwdenk 1723c0880485SNikita Kiryanov CONFIG_SPLASHIMAGE_GUARD 1724c0880485SNikita Kiryanov 1725c0880485SNikita Kiryanov If this option is set, then U-Boot will prevent the environment 1726c0880485SNikita Kiryanov variable "splashimage" from being set to a problematic address 1727c0880485SNikita Kiryanov (see README.displaying-bmps and README.arm-unaligned-accesses). 1728c0880485SNikita Kiryanov This option is useful for targets where, due to alignment 1729c0880485SNikita Kiryanov restrictions, an improperly aligned BMP image will cause a data 1730c0880485SNikita Kiryanov abort. If you think you will not have problems with unaligned 1731c0880485SNikita Kiryanov accesses (for example because your toolchain prevents them) 1732c0880485SNikita Kiryanov there is no need to set this option. 1733c0880485SNikita Kiryanov 17341ca298ceSMatthias Weisser CONFIG_SPLASH_SCREEN_ALIGN 17351ca298ceSMatthias Weisser 17361ca298ceSMatthias Weisser If this option is set the splash image can be freely positioned 17371ca298ceSMatthias Weisser on the screen. Environment variable "splashpos" specifies the 17381ca298ceSMatthias Weisser position as "x,y". If a positive number is given it is used as 17391ca298ceSMatthias Weisser number of pixel from left/top. If a negative number is given it 17401ca298ceSMatthias Weisser is used as number of pixel from right/bottom. You can also 17411ca298ceSMatthias Weisser specify 'm' for centering the image. 17421ca298ceSMatthias Weisser 17431ca298ceSMatthias Weisser Example: 17441ca298ceSMatthias Weisser setenv splashpos m,m 17451ca298ceSMatthias Weisser => image at center of screen 17461ca298ceSMatthias Weisser 17471ca298ceSMatthias Weisser setenv splashpos 30,20 17481ca298ceSMatthias Weisser => image at x = 30 and y = 20 17491ca298ceSMatthias Weisser 17501ca298ceSMatthias Weisser setenv splashpos -10,m 17511ca298ceSMatthias Weisser => vertically centered image 17521ca298ceSMatthias Weisser at x = dspWidth - bmpWidth - 9 17531ca298ceSMatthias Weisser 175498f4a3dfSStefan Roese- Gzip compressed BMP image support: CONFIG_VIDEO_BMP_GZIP 175598f4a3dfSStefan Roese 175698f4a3dfSStefan Roese If this option is set, additionally to standard BMP 175798f4a3dfSStefan Roese images, gzipped BMP images can be displayed via the 175898f4a3dfSStefan Roese splashscreen support or the bmp command. 175998f4a3dfSStefan Roese 1760d5011762SAnatolij Gustschin- Run length encoded BMP image (RLE8) support: CONFIG_VIDEO_BMP_RLE8 1761d5011762SAnatolij Gustschin 1762d5011762SAnatolij Gustschin If this option is set, 8-bit RLE compressed BMP images 1763d5011762SAnatolij Gustschin can be displayed via the splashscreen support or the 1764d5011762SAnatolij Gustschin bmp command. 1765d5011762SAnatolij Gustschin 1766f2b96dfbSLei Wen- Do compresssing for memory range: 1767f2b96dfbSLei Wen CONFIG_CMD_ZIP 1768f2b96dfbSLei Wen 1769f2b96dfbSLei Wen If this option is set, it would use zlib deflate method 1770f2b96dfbSLei Wen to compress the specified memory at its best effort. 1771f2b96dfbSLei Wen 1772c29fdfc1Swdenk- Compression support: 17738ef70478SKees Cook CONFIG_GZIP 17748ef70478SKees Cook 17758ef70478SKees Cook Enabled by default to support gzip compressed images. 17768ef70478SKees Cook 1777c29fdfc1Swdenk CONFIG_BZIP2 1778c29fdfc1Swdenk 1779c29fdfc1Swdenk If this option is set, support for bzip2 compressed 1780c29fdfc1Swdenk images is included. If not, only uncompressed and gzip 1781c29fdfc1Swdenk compressed images are supported. 1782c29fdfc1Swdenk 1783c29fdfc1Swdenk NOTE: the bzip2 algorithm requires a lot of RAM, so 17846d0f6bcfSJean-Christophe PLAGNIOL-VILLARD the malloc area (as defined by CONFIG_SYS_MALLOC_LEN) should 1785c29fdfc1Swdenk be at least 4MB. 1786d791b1dcSwdenk 1787fc9c1727SLuigi 'Comio' Mantellini CONFIG_LZMA 1788fc9c1727SLuigi 'Comio' Mantellini 1789fc9c1727SLuigi 'Comio' Mantellini If this option is set, support for lzma compressed 1790fc9c1727SLuigi 'Comio' Mantellini images is included. 1791fc9c1727SLuigi 'Comio' Mantellini 1792fc9c1727SLuigi 'Comio' Mantellini Note: The LZMA algorithm adds between 2 and 4KB of code and it 1793fc9c1727SLuigi 'Comio' Mantellini requires an amount of dynamic memory that is given by the 1794fc9c1727SLuigi 'Comio' Mantellini formula: 1795fc9c1727SLuigi 'Comio' Mantellini 1796fc9c1727SLuigi 'Comio' Mantellini (1846 + 768 << (lc + lp)) * sizeof(uint16) 1797fc9c1727SLuigi 'Comio' Mantellini 1798fc9c1727SLuigi 'Comio' Mantellini Where lc and lp stand for, respectively, Literal context bits 1799fc9c1727SLuigi 'Comio' Mantellini and Literal pos bits. 1800fc9c1727SLuigi 'Comio' Mantellini 1801fc9c1727SLuigi 'Comio' Mantellini This value is upper-bounded by 14MB in the worst case. Anyway, 1802fc9c1727SLuigi 'Comio' Mantellini for a ~4MB large kernel image, we have lc=3 and lp=0 for a 1803fc9c1727SLuigi 'Comio' Mantellini total amount of (1846 + 768 << (3 + 0)) * 2 = ~41KB... that is 1804fc9c1727SLuigi 'Comio' Mantellini a very small buffer. 1805fc9c1727SLuigi 'Comio' Mantellini 1806fc9c1727SLuigi 'Comio' Mantellini Use the lzmainfo tool to determinate the lc and lp values and 1807fc9c1727SLuigi 'Comio' Mantellini then calculate the amount of needed dynamic memory (ensuring 18086d0f6bcfSJean-Christophe PLAGNIOL-VILLARD the appropriate CONFIG_SYS_MALLOC_LEN value). 1809fc9c1727SLuigi 'Comio' Mantellini 18108ef70478SKees Cook CONFIG_LZO 18118ef70478SKees Cook 18128ef70478SKees Cook If this option is set, support for LZO compressed images 18138ef70478SKees Cook is included. 18148ef70478SKees Cook 181517ea1177Swdenk- MII/PHY support: 181617ea1177Swdenk CONFIG_PHY_ADDR 181717ea1177Swdenk 181817ea1177Swdenk The address of PHY on MII bus. 181917ea1177Swdenk 182017ea1177Swdenk CONFIG_PHY_CLOCK_FREQ (ppc4xx) 182117ea1177Swdenk 182217ea1177Swdenk The clock frequency of the MII bus 182317ea1177Swdenk 182417ea1177Swdenk CONFIG_PHY_GIGE 182517ea1177Swdenk 182617ea1177Swdenk If this option is set, support for speed/duplex 182711ccc33fSMarcel Ziswiler detection of gigabit PHY is included. 182817ea1177Swdenk 182917ea1177Swdenk CONFIG_PHY_RESET_DELAY 183017ea1177Swdenk 183117ea1177Swdenk Some PHY like Intel LXT971A need extra delay after 183217ea1177Swdenk reset before any MII register access is possible. 183317ea1177Swdenk For such PHY, set this option to the usec delay 183417ea1177Swdenk required. (minimum 300usec for LXT971A) 183517ea1177Swdenk 183617ea1177Swdenk CONFIG_PHY_CMD_DELAY (ppc4xx) 183717ea1177Swdenk 183817ea1177Swdenk Some PHY like Intel LXT971A need extra delay after 183917ea1177Swdenk command issued before MII status register can be read 184017ea1177Swdenk 1841c609719bSwdenk- Ethernet address: 1842c609719bSwdenk CONFIG_ETHADDR 1843c68a05feSrichardretanubun CONFIG_ETH1ADDR 1844c609719bSwdenk CONFIG_ETH2ADDR 1845c609719bSwdenk CONFIG_ETH3ADDR 1846c68a05feSrichardretanubun CONFIG_ETH4ADDR 1847c68a05feSrichardretanubun CONFIG_ETH5ADDR 1848c609719bSwdenk 184911ccc33fSMarcel Ziswiler Define a default value for Ethernet address to use 185011ccc33fSMarcel Ziswiler for the respective Ethernet interface, in case this 1851c609719bSwdenk is not determined automatically. 1852c609719bSwdenk 1853c609719bSwdenk- IP address: 1854c609719bSwdenk CONFIG_IPADDR 1855c609719bSwdenk 1856c609719bSwdenk Define a default value for the IP address to use for 185711ccc33fSMarcel Ziswiler the default Ethernet interface, in case this is not 1858c609719bSwdenk determined through e.g. bootp. 18591ebcd654SWolfgang Denk (Environment variable "ipaddr") 1860c609719bSwdenk 1861c609719bSwdenk- Server IP address: 1862c609719bSwdenk CONFIG_SERVERIP 1863c609719bSwdenk 1864c609719bSwdenk Defines a default value for the IP address of a TFTP 1865c609719bSwdenk server to contact when using the "tftboot" command. 18661ebcd654SWolfgang Denk (Environment variable "serverip") 1867c609719bSwdenk 186897cfe861SRobin Getz CONFIG_KEEP_SERVERADDR 186997cfe861SRobin Getz 187097cfe861SRobin Getz Keeps the server's MAC address, in the env 'serveraddr' 187197cfe861SRobin Getz for passing to bootargs (like Linux's netconsole option) 187297cfe861SRobin Getz 18731ebcd654SWolfgang Denk- Gateway IP address: 18741ebcd654SWolfgang Denk CONFIG_GATEWAYIP 18751ebcd654SWolfgang Denk 18761ebcd654SWolfgang Denk Defines a default value for the IP address of the 18771ebcd654SWolfgang Denk default router where packets to other networks are 18781ebcd654SWolfgang Denk sent to. 18791ebcd654SWolfgang Denk (Environment variable "gatewayip") 18801ebcd654SWolfgang Denk 18811ebcd654SWolfgang Denk- Subnet mask: 18821ebcd654SWolfgang Denk CONFIG_NETMASK 18831ebcd654SWolfgang Denk 18841ebcd654SWolfgang Denk Defines a default value for the subnet mask (or 18851ebcd654SWolfgang Denk routing prefix) which is used to determine if an IP 18861ebcd654SWolfgang Denk address belongs to the local subnet or needs to be 18871ebcd654SWolfgang Denk forwarded through a router. 18881ebcd654SWolfgang Denk (Environment variable "netmask") 18891ebcd654SWolfgang Denk 189053a5c424SDavid Updegraff- Multicast TFTP Mode: 189153a5c424SDavid Updegraff CONFIG_MCAST_TFTP 189253a5c424SDavid Updegraff 189353a5c424SDavid Updegraff Defines whether you want to support multicast TFTP as per 189453a5c424SDavid Updegraff rfc-2090; for example to work with atftp. Lets lots of targets 189511ccc33fSMarcel Ziswiler tftp down the same boot image concurrently. Note: the Ethernet 189653a5c424SDavid Updegraff driver in use must provide a function: mcast() to join/leave a 189753a5c424SDavid Updegraff multicast group. 189853a5c424SDavid Updegraff 1899c609719bSwdenk- BOOTP Recovery Mode: 1900c609719bSwdenk CONFIG_BOOTP_RANDOM_DELAY 1901c609719bSwdenk 1902c609719bSwdenk If you have many targets in a network that try to 1903c609719bSwdenk boot using BOOTP, you may want to avoid that all 1904c609719bSwdenk systems send out BOOTP requests at precisely the same 1905c609719bSwdenk moment (which would happen for instance at recovery 1906c609719bSwdenk from a power failure, when all systems will try to 1907c609719bSwdenk boot, thus flooding the BOOTP server. Defining 1908c609719bSwdenk CONFIG_BOOTP_RANDOM_DELAY causes a random delay to be 1909c609719bSwdenk inserted before sending out BOOTP requests. The 19106c33c785SWolfgang Denk following delays are inserted then: 1911c609719bSwdenk 1912c609719bSwdenk 1st BOOTP request: delay 0 ... 1 sec 1913c609719bSwdenk 2nd BOOTP request: delay 0 ... 2 sec 1914c609719bSwdenk 3rd BOOTP request: delay 0 ... 4 sec 1915c609719bSwdenk 4th and following 1916c609719bSwdenk BOOTP requests: delay 0 ... 8 sec 1917c609719bSwdenk 1918fe389a82Sstroese- DHCP Advanced Options: 19191fe80d79SJon Loeliger You can fine tune the DHCP functionality by defining 19201fe80d79SJon Loeliger CONFIG_BOOTP_* symbols: 1921fe389a82Sstroese 19221fe80d79SJon Loeliger CONFIG_BOOTP_SUBNETMASK 19231fe80d79SJon Loeliger CONFIG_BOOTP_GATEWAY 19241fe80d79SJon Loeliger CONFIG_BOOTP_HOSTNAME 19251fe80d79SJon Loeliger CONFIG_BOOTP_NISDOMAIN 19261fe80d79SJon Loeliger CONFIG_BOOTP_BOOTPATH 19271fe80d79SJon Loeliger CONFIG_BOOTP_BOOTFILESIZE 19281fe80d79SJon Loeliger CONFIG_BOOTP_DNS 19291fe80d79SJon Loeliger CONFIG_BOOTP_DNS2 19301fe80d79SJon Loeliger CONFIG_BOOTP_SEND_HOSTNAME 19311fe80d79SJon Loeliger CONFIG_BOOTP_NTPSERVER 19321fe80d79SJon Loeliger CONFIG_BOOTP_TIMEOFFSET 19331fe80d79SJon Loeliger CONFIG_BOOTP_VENDOREX 19342c00e099SJoe Hershberger CONFIG_BOOTP_MAY_FAIL 1935fe389a82Sstroese 19365d110f0aSWilson Callan CONFIG_BOOTP_SERVERIP - TFTP server will be the serverip 19375d110f0aSWilson Callan environment variable, not the BOOTP server. 1938fe389a82Sstroese 19392c00e099SJoe Hershberger CONFIG_BOOTP_MAY_FAIL - If the DHCP server is not found 19402c00e099SJoe Hershberger after the configured retry count, the call will fail 19412c00e099SJoe Hershberger instead of starting over. This can be used to fail over 19422c00e099SJoe Hershberger to Link-local IP address configuration if the DHCP server 19432c00e099SJoe Hershberger is not available. 19442c00e099SJoe Hershberger 1945fe389a82Sstroese CONFIG_BOOTP_DNS2 - If a DHCP client requests the DNS 1946fe389a82Sstroese serverip from a DHCP server, it is possible that more 1947fe389a82Sstroese than one DNS serverip is offered to the client. 1948fe389a82Sstroese If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS 1949fe389a82Sstroese serverip will be stored in the additional environment 1950fe389a82Sstroese variable "dnsip2". The first DNS serverip is always 1951fe389a82Sstroese stored in the variable "dnsip", when CONFIG_BOOTP_DNS 19521fe80d79SJon Loeliger is defined. 1953fe389a82Sstroese 1954fe389a82Sstroese CONFIG_BOOTP_SEND_HOSTNAME - Some DHCP servers are capable 1955fe389a82Sstroese to do a dynamic update of a DNS server. To do this, they 1956fe389a82Sstroese need the hostname of the DHCP requester. 19575d110f0aSWilson Callan If CONFIG_BOOTP_SEND_HOSTNAME is defined, the content 19581fe80d79SJon Loeliger of the "hostname" environment variable is passed as 19591fe80d79SJon Loeliger option 12 to the DHCP server. 1960fe389a82Sstroese 1961d9a2f416SAras Vaichas CONFIG_BOOTP_DHCP_REQUEST_DELAY 1962d9a2f416SAras Vaichas 1963d9a2f416SAras Vaichas A 32bit value in microseconds for a delay between 1964d9a2f416SAras Vaichas receiving a "DHCP Offer" and sending the "DHCP Request". 1965d9a2f416SAras Vaichas This fixes a problem with certain DHCP servers that don't 1966d9a2f416SAras Vaichas respond 100% of the time to a "DHCP request". E.g. On an 1967d9a2f416SAras Vaichas AT91RM9200 processor running at 180MHz, this delay needed 1968d9a2f416SAras Vaichas to be *at least* 15,000 usec before a Windows Server 2003 1969d9a2f416SAras Vaichas DHCP server would reply 100% of the time. I recommend at 1970d9a2f416SAras Vaichas least 50,000 usec to be safe. The alternative is to hope 1971d9a2f416SAras Vaichas that one of the retries will be successful but note that 1972d9a2f416SAras Vaichas the DHCP timeout and retry process takes a longer than 1973d9a2f416SAras Vaichas this delay. 1974d9a2f416SAras Vaichas 1975d22c338eSJoe Hershberger - Link-local IP address negotiation: 1976d22c338eSJoe Hershberger Negotiate with other link-local clients on the local network 1977d22c338eSJoe Hershberger for an address that doesn't require explicit configuration. 1978d22c338eSJoe Hershberger This is especially useful if a DHCP server cannot be guaranteed 1979d22c338eSJoe Hershberger to exist in all environments that the device must operate. 1980d22c338eSJoe Hershberger 1981d22c338eSJoe Hershberger See doc/README.link-local for more information. 1982d22c338eSJoe Hershberger 1983a3d991bdSwdenk - CDP Options: 1984a3d991bdSwdenk CONFIG_CDP_DEVICE_ID 1985a3d991bdSwdenk 1986a3d991bdSwdenk The device id used in CDP trigger frames. 1987a3d991bdSwdenk 1988a3d991bdSwdenk CONFIG_CDP_DEVICE_ID_PREFIX 1989a3d991bdSwdenk 1990a3d991bdSwdenk A two character string which is prefixed to the MAC address 1991a3d991bdSwdenk of the device. 1992a3d991bdSwdenk 1993a3d991bdSwdenk CONFIG_CDP_PORT_ID 1994a3d991bdSwdenk 1995a3d991bdSwdenk A printf format string which contains the ascii name of 1996a3d991bdSwdenk the port. Normally is set to "eth%d" which sets 199711ccc33fSMarcel Ziswiler eth0 for the first Ethernet, eth1 for the second etc. 1998a3d991bdSwdenk 1999a3d991bdSwdenk CONFIG_CDP_CAPABILITIES 2000a3d991bdSwdenk 2001a3d991bdSwdenk A 32bit integer which indicates the device capabilities; 2002a3d991bdSwdenk 0x00000010 for a normal host which does not forwards. 2003a3d991bdSwdenk 2004a3d991bdSwdenk CONFIG_CDP_VERSION 2005a3d991bdSwdenk 2006a3d991bdSwdenk An ascii string containing the version of the software. 2007a3d991bdSwdenk 2008a3d991bdSwdenk CONFIG_CDP_PLATFORM 2009a3d991bdSwdenk 2010a3d991bdSwdenk An ascii string containing the name of the platform. 2011a3d991bdSwdenk 2012a3d991bdSwdenk CONFIG_CDP_TRIGGER 2013a3d991bdSwdenk 2014a3d991bdSwdenk A 32bit integer sent on the trigger. 2015a3d991bdSwdenk 2016a3d991bdSwdenk CONFIG_CDP_POWER_CONSUMPTION 2017a3d991bdSwdenk 2018a3d991bdSwdenk A 16bit integer containing the power consumption of the 2019a3d991bdSwdenk device in .1 of milliwatts. 2020a3d991bdSwdenk 2021a3d991bdSwdenk CONFIG_CDP_APPLIANCE_VLAN_TYPE 2022a3d991bdSwdenk 2023a3d991bdSwdenk A byte containing the id of the VLAN. 2024a3d991bdSwdenk 2025c609719bSwdenk- Status LED: CONFIG_STATUS_LED 2026c609719bSwdenk 2027c609719bSwdenk Several configurations allow to display the current 2028c609719bSwdenk status using a LED. For instance, the LED will blink 2029c609719bSwdenk fast while running U-Boot code, stop blinking as 2030c609719bSwdenk soon as a reply to a BOOTP request was received, and 2031c609719bSwdenk start blinking slow once the Linux kernel is running 2032c609719bSwdenk (supported by a status LED driver in the Linux 2033c609719bSwdenk kernel). Defining CONFIG_STATUS_LED enables this 2034c609719bSwdenk feature in U-Boot. 2035c609719bSwdenk 20361df7bbbaSIgor Grinberg Additional options: 20371df7bbbaSIgor Grinberg 20381df7bbbaSIgor Grinberg CONFIG_GPIO_LED 20391df7bbbaSIgor Grinberg The status LED can be connected to a GPIO pin. 20401df7bbbaSIgor Grinberg In such cases, the gpio_led driver can be used as a 20411df7bbbaSIgor Grinberg status LED backend implementation. Define CONFIG_GPIO_LED 20421df7bbbaSIgor Grinberg to include the gpio_led driver in the U-Boot binary. 20431df7bbbaSIgor Grinberg 20449dfdcdfeSIgor Grinberg CONFIG_GPIO_LED_INVERTED_TABLE 20459dfdcdfeSIgor Grinberg Some GPIO connected LEDs may have inverted polarity in which 20469dfdcdfeSIgor Grinberg case the GPIO high value corresponds to LED off state and 20479dfdcdfeSIgor Grinberg GPIO low value corresponds to LED on state. 20489dfdcdfeSIgor Grinberg In such cases CONFIG_GPIO_LED_INVERTED_TABLE may be defined 20499dfdcdfeSIgor Grinberg with a list of GPIO LEDs that have inverted polarity. 20509dfdcdfeSIgor Grinberg 2051c609719bSwdenk- CAN Support: CONFIG_CAN_DRIVER 2052c609719bSwdenk 2053c609719bSwdenk Defining CONFIG_CAN_DRIVER enables CAN driver support 2054c609719bSwdenk on those systems that support this (optional) 2055c609719bSwdenk feature, like the TQM8xxL modules. 2056c609719bSwdenk 20573f4978c7SHeiko Schocher- I2C Support: CONFIG_SYS_I2C 2058c609719bSwdenk 20593f4978c7SHeiko Schocher This enable the NEW i2c subsystem, and will allow you to use 20603f4978c7SHeiko Schocher i2c commands at the u-boot command line (as long as you set 20613f4978c7SHeiko Schocher CONFIG_CMD_I2C in CONFIG_COMMANDS) and communicate with i2c 20623f4978c7SHeiko Schocher based realtime clock chips or other i2c devices. See 20633f4978c7SHeiko Schocher common/cmd_i2c.c for a description of the command line 20643f4978c7SHeiko Schocher interface. 20653f4978c7SHeiko Schocher 20663f4978c7SHeiko Schocher ported i2c driver to the new framework: 2067ea818dbbSHeiko Schocher - drivers/i2c/soft_i2c.c: 2068ea818dbbSHeiko Schocher - activate first bus with CONFIG_SYS_I2C_SOFT define 2069ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED and CONFIG_SYS_I2C_SOFT_SLAVE 2070ea818dbbSHeiko Schocher for defining speed and slave address 2071ea818dbbSHeiko Schocher - activate second bus with I2C_SOFT_DECLARATIONS2 define 2072ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_2 and CONFIG_SYS_I2C_SOFT_SLAVE_2 2073ea818dbbSHeiko Schocher for defining speed and slave address 2074ea818dbbSHeiko Schocher - activate third bus with I2C_SOFT_DECLARATIONS3 define 2075ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_3 and CONFIG_SYS_I2C_SOFT_SLAVE_3 2076ea818dbbSHeiko Schocher for defining speed and slave address 2077ea818dbbSHeiko Schocher - activate fourth bus with I2C_SOFT_DECLARATIONS4 define 2078ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_4 and CONFIG_SYS_I2C_SOFT_SLAVE_4 2079ea818dbbSHeiko Schocher for defining speed and slave address 20803f4978c7SHeiko Schocher 208100f792e0SHeiko Schocher - drivers/i2c/fsl_i2c.c: 208200f792e0SHeiko Schocher - activate i2c driver with CONFIG_SYS_I2C_FSL 208300f792e0SHeiko Schocher define CONFIG_SYS_FSL_I2C_OFFSET for setting the register 208400f792e0SHeiko Schocher offset CONFIG_SYS_FSL_I2C_SPEED for the i2c speed and 208500f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C_SLAVE for the slave addr of the first 208600f792e0SHeiko Schocher bus. 208700f792e0SHeiko Schocher - If your board supports a second fsl i2c bus, define 208800f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_OFFSET for the register offset 208900f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_SPEED for the speed and 209000f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_SLAVE for the slave address of the 209100f792e0SHeiko Schocher second bus. 209200f792e0SHeiko Schocher 20931f2ba722SSimon Glass - drivers/i2c/tegra_i2c.c: 20941f2ba722SSimon Glass - activate this driver with CONFIG_SYS_I2C_TEGRA 20951f2ba722SSimon Glass - This driver adds 4 i2c buses with a fix speed from 20961f2ba722SSimon Glass 100000 and the slave addr 0! 20971f2ba722SSimon Glass 2098880540deSDirk Eibach - drivers/i2c/ppc4xx_i2c.c 2099880540deSDirk Eibach - activate this driver with CONFIG_SYS_I2C_PPC4XX 2100880540deSDirk Eibach - CONFIG_SYS_I2C_PPC4XX_CH0 activate hardware channel 0 2101880540deSDirk Eibach - CONFIG_SYS_I2C_PPC4XX_CH1 activate hardware channel 1 2102880540deSDirk Eibach 2103fac96408Strem - drivers/i2c/i2c_mxc.c 2104fac96408Strem - activate this driver with CONFIG_SYS_I2C_MXC 2105fac96408Strem - define speed for bus 1 with CONFIG_SYS_MXC_I2C1_SPEED 2106fac96408Strem - define slave for bus 1 with CONFIG_SYS_MXC_I2C1_SLAVE 2107fac96408Strem - define speed for bus 2 with CONFIG_SYS_MXC_I2C2_SPEED 2108fac96408Strem - define slave for bus 2 with CONFIG_SYS_MXC_I2C2_SLAVE 2109fac96408Strem - define speed for bus 3 with CONFIG_SYS_MXC_I2C3_SPEED 2110fac96408Strem - define slave for bus 3 with CONFIG_SYS_MXC_I2C3_SLAVE 2111fac96408Strem If thoses defines are not set, default value is 100000 2112fac96408Strem for speed, and 0 for slave. 2113fac96408Strem 21141086bfa9SNobuhiro Iwamatsu - drivers/i2c/rcar_i2c.c: 21151086bfa9SNobuhiro Iwamatsu - activate this driver with CONFIG_SYS_I2C_RCAR 21161086bfa9SNobuhiro Iwamatsu - This driver adds 4 i2c buses 21171086bfa9SNobuhiro Iwamatsu 21181086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C0_BASE for setting the register channel 0 21191086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C0_SPEED for for the speed channel 0 21201086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C1_BASE for setting the register channel 1 21211086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C1_SPEED for for the speed channel 1 21221086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C2_BASE for setting the register channel 2 21231086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C2_SPEED for for the speed channel 2 21241086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C3_BASE for setting the register channel 3 21251086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C3_SPEED for for the speed channel 3 21261086bfa9SNobuhiro Iwamatsu - CONFIF_SYS_RCAR_I2C_NUM_CONTROLLERS for number of i2c buses 21271086bfa9SNobuhiro Iwamatsu 21282035d77dSNobuhiro Iwamatsu - drivers/i2c/sh_i2c.c: 21292035d77dSNobuhiro Iwamatsu - activate this driver with CONFIG_SYS_I2C_SH 21302035d77dSNobuhiro Iwamatsu - This driver adds from 2 to 5 i2c buses 21312035d77dSNobuhiro Iwamatsu 21322035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE0 for setting the register channel 0 21332035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED0 for for the speed channel 0 21342035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE1 for setting the register channel 1 21352035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED1 for for the speed channel 1 21362035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE2 for setting the register channel 2 21372035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED2 for for the speed channel 2 21382035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE3 for setting the register channel 3 21392035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED3 for for the speed channel 3 21402035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE4 for setting the register channel 4 21412035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED4 for for the speed channel 4 21422035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE5 for setting the register channel 5 21432035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED5 for for the speed channel 5 21442035d77dSNobuhiro Iwamatsu - CONFIF_SYS_I2C_SH_NUM_CONTROLLERS for nummber of i2c buses 21452035d77dSNobuhiro Iwamatsu 21466789e84eSHeiko Schocher - drivers/i2c/omap24xx_i2c.c 21476789e84eSHeiko Schocher - activate this driver with CONFIG_SYS_I2C_OMAP24XX 21486789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED speed channel 0 21496789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE slave addr channel 0 21506789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED1 speed channel 1 21516789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE1 slave addr channel 1 21526789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED2 speed channel 2 21536789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE2 slave addr channel 2 21546789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED3 speed channel 3 21556789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE3 slave addr channel 3 21566789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED4 speed channel 4 21576789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE4 slave addr channel 4 21586789e84eSHeiko Schocher 21590bdffe71SHeiko Schocher - drivers/i2c/zynq_i2c.c 21600bdffe71SHeiko Schocher - activate this driver with CONFIG_SYS_I2C_ZYNQ 21610bdffe71SHeiko Schocher - set CONFIG_SYS_I2C_ZYNQ_SPEED for speed setting 21620bdffe71SHeiko Schocher - set CONFIG_SYS_I2C_ZYNQ_SLAVE for slave addr 21630bdffe71SHeiko Schocher 2164e717fc6dSNaveen Krishna Ch - drivers/i2c/s3c24x0_i2c.c: 2165e717fc6dSNaveen Krishna Ch - activate this driver with CONFIG_SYS_I2C_S3C24X0 2166e717fc6dSNaveen Krishna Ch - This driver adds i2c buses (11 for Exynos5250, Exynos5420 2167e717fc6dSNaveen Krishna Ch 9 i2c buses for Exynos4 and 1 for S3C24X0 SoCs from Samsung) 2168e717fc6dSNaveen Krishna Ch with a fix speed from 100000 and the slave addr 0! 2169e717fc6dSNaveen Krishna Ch 21703f4978c7SHeiko Schocher additional defines: 21713f4978c7SHeiko Schocher 21723f4978c7SHeiko Schocher CONFIG_SYS_NUM_I2C_BUSES 21733f4978c7SHeiko Schocher Hold the number of i2c busses you want to use. If you 21743f4978c7SHeiko Schocher don't use/have i2c muxes on your i2c bus, this 21753f4978c7SHeiko Schocher is equal to CONFIG_SYS_NUM_I2C_ADAPTERS, and you can 21763f4978c7SHeiko Schocher omit this define. 21773f4978c7SHeiko Schocher 21783f4978c7SHeiko Schocher CONFIG_SYS_I2C_DIRECT_BUS 21793f4978c7SHeiko Schocher define this, if you don't use i2c muxes on your hardware. 21803f4978c7SHeiko Schocher if CONFIG_SYS_I2C_MAX_HOPS is not defined or == 0 you can 21813f4978c7SHeiko Schocher omit this define. 21823f4978c7SHeiko Schocher 21833f4978c7SHeiko Schocher CONFIG_SYS_I2C_MAX_HOPS 21843f4978c7SHeiko Schocher define how many muxes are maximal consecutively connected 21853f4978c7SHeiko Schocher on one i2c bus. If you not use i2c muxes, omit this 21863f4978c7SHeiko Schocher define. 21873f4978c7SHeiko Schocher 21883f4978c7SHeiko Schocher CONFIG_SYS_I2C_BUSES 21893f4978c7SHeiko Schocher hold a list of busses you want to use, only used if 21903f4978c7SHeiko Schocher CONFIG_SYS_I2C_DIRECT_BUS is not defined, for example 21913f4978c7SHeiko Schocher a board with CONFIG_SYS_I2C_MAX_HOPS = 1 and 21923f4978c7SHeiko Schocher CONFIG_SYS_NUM_I2C_BUSES = 9: 21933f4978c7SHeiko Schocher 21943f4978c7SHeiko Schocher CONFIG_SYS_I2C_BUSES {{0, {I2C_NULL_HOP}}, \ 21953f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 1}}}, \ 21963f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 2}}}, \ 21973f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 3}}}, \ 21983f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 4}}}, \ 21993f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 5}}}, \ 22003f4978c7SHeiko Schocher {1, {I2C_NULL_HOP}}, \ 22013f4978c7SHeiko Schocher {1, {{I2C_MUX_PCA9544, 0x72, 1}}}, \ 22023f4978c7SHeiko Schocher {1, {{I2C_MUX_PCA9544, 0x72, 2}}}, \ 22033f4978c7SHeiko Schocher } 22043f4978c7SHeiko Schocher 22053f4978c7SHeiko Schocher which defines 22063f4978c7SHeiko Schocher bus 0 on adapter 0 without a mux 2207ea818dbbSHeiko Schocher bus 1 on adapter 0 with a PCA9547 on address 0x70 port 1 2208ea818dbbSHeiko Schocher bus 2 on adapter 0 with a PCA9547 on address 0x70 port 2 2209ea818dbbSHeiko Schocher bus 3 on adapter 0 with a PCA9547 on address 0x70 port 3 2210ea818dbbSHeiko Schocher bus 4 on adapter 0 with a PCA9547 on address 0x70 port 4 2211ea818dbbSHeiko Schocher bus 5 on adapter 0 with a PCA9547 on address 0x70 port 5 22123f4978c7SHeiko Schocher bus 6 on adapter 1 without a mux 2213ea818dbbSHeiko Schocher bus 7 on adapter 1 with a PCA9544 on address 0x72 port 1 2214ea818dbbSHeiko Schocher bus 8 on adapter 1 with a PCA9544 on address 0x72 port 2 22153f4978c7SHeiko Schocher 22163f4978c7SHeiko Schocher If you do not have i2c muxes on your board, omit this define. 22173f4978c7SHeiko Schocher 2218ea818dbbSHeiko Schocher- Legacy I2C Support: CONFIG_HARD_I2C 22193f4978c7SHeiko Schocher 22203f4978c7SHeiko Schocher NOTE: It is intended to move drivers to CONFIG_SYS_I2C which 22213f4978c7SHeiko Schocher provides the following compelling advantages: 22223f4978c7SHeiko Schocher 22233f4978c7SHeiko Schocher - more than one i2c adapter is usable 22243f4978c7SHeiko Schocher - approved multibus support 22253f4978c7SHeiko Schocher - better i2c mux support 22263f4978c7SHeiko Schocher 22273f4978c7SHeiko Schocher ** Please consider updating your I2C driver now. ** 22283f4978c7SHeiko Schocher 2229ea818dbbSHeiko Schocher These enable legacy I2C serial bus commands. Defining 2230ea818dbbSHeiko Schocher CONFIG_HARD_I2C will include the appropriate I2C driver 2231ea818dbbSHeiko Schocher for the selected CPU. 2232c609719bSwdenk 2233b37c7e5eSwdenk This will allow you to use i2c commands at the u-boot 2234602ad3b3SJon Loeliger command line (as long as you set CONFIG_CMD_I2C in 2235b37c7e5eSwdenk CONFIG_COMMANDS) and communicate with i2c based realtime 2236b37c7e5eSwdenk clock chips. See common/cmd_i2c.c for a description of the 2237c609719bSwdenk command line interface. 2238c609719bSwdenk 2239bb99ad6dSBen Warren CONFIG_HARD_I2C selects a hardware I2C controller. 2240c609719bSwdenk 2241b37c7e5eSwdenk There are several other quantities that must also be 2242ea818dbbSHeiko Schocher defined when you define CONFIG_HARD_I2C. 2243c609719bSwdenk 22446d0f6bcfSJean-Christophe PLAGNIOL-VILLARD In both cases you will need to define CONFIG_SYS_I2C_SPEED 2245b37c7e5eSwdenk to be the frequency (in Hz) at which you wish your i2c bus 22466d0f6bcfSJean-Christophe PLAGNIOL-VILLARD to run and CONFIG_SYS_I2C_SLAVE to be the address of this node (ie 224711ccc33fSMarcel Ziswiler the CPU's i2c node address). 2248c609719bSwdenk 22498d321b81SPeter Tyser Now, the u-boot i2c code for the mpc8xx 2250a47a12beSStefan Roese (arch/powerpc/cpu/mpc8xx/i2c.c) sets the CPU up as a master node 22518d321b81SPeter Tyser and so its address should therefore be cleared to 0 (See, 22528d321b81SPeter Tyser eg, MPC823e User's Manual p.16-473). So, set 22538d321b81SPeter Tyser CONFIG_SYS_I2C_SLAVE to 0. 2254b37c7e5eSwdenk 22555da71efaSEric Millbrandt CONFIG_SYS_I2C_INIT_MPC5XXX 22565da71efaSEric Millbrandt 22575da71efaSEric Millbrandt When a board is reset during an i2c bus transfer 22585da71efaSEric Millbrandt chips might think that the current transfer is still 22595da71efaSEric Millbrandt in progress. Reset the slave devices by sending start 22605da71efaSEric Millbrandt commands until the slave device responds. 22615da71efaSEric Millbrandt 2262b37c7e5eSwdenk That's all that's required for CONFIG_HARD_I2C. 2263b37c7e5eSwdenk 2264ea818dbbSHeiko Schocher If you use the software i2c interface (CONFIG_SYS_I2C_SOFT) 2265b37c7e5eSwdenk then the following macros need to be defined (examples are 2266b37c7e5eSwdenk from include/configs/lwmon.h): 2267c609719bSwdenk 2268c609719bSwdenk I2C_INIT 2269c609719bSwdenk 2270b37c7e5eSwdenk (Optional). Any commands necessary to enable the I2C 2271c609719bSwdenk controller or configure ports. 2272c609719bSwdenk 2273b37c7e5eSwdenk eg: #define I2C_INIT (immr->im_cpm.cp_pbdir |= PB_SCL) 2274b37c7e5eSwdenk 2275c609719bSwdenk I2C_PORT 2276c609719bSwdenk 2277c609719bSwdenk (Only for MPC8260 CPU). The I/O port to use (the code 2278c609719bSwdenk assumes both bits are on the same port). Valid values 2279c609719bSwdenk are 0..3 for ports A..D. 2280c609719bSwdenk 2281c609719bSwdenk I2C_ACTIVE 2282c609719bSwdenk 2283c609719bSwdenk The code necessary to make the I2C data line active 2284c609719bSwdenk (driven). If the data line is open collector, this 2285c609719bSwdenk define can be null. 2286c609719bSwdenk 2287b37c7e5eSwdenk eg: #define I2C_ACTIVE (immr->im_cpm.cp_pbdir |= PB_SDA) 2288b37c7e5eSwdenk 2289c609719bSwdenk I2C_TRISTATE 2290c609719bSwdenk 2291c609719bSwdenk The code necessary to make the I2C data line tri-stated 2292c609719bSwdenk (inactive). If the data line is open collector, this 2293c609719bSwdenk define can be null. 2294c609719bSwdenk 2295b37c7e5eSwdenk eg: #define I2C_TRISTATE (immr->im_cpm.cp_pbdir &= ~PB_SDA) 2296b37c7e5eSwdenk 2297c609719bSwdenk I2C_READ 2298c609719bSwdenk 2299472d5460SYork Sun Code that returns true if the I2C data line is high, 2300472d5460SYork Sun false if it is low. 2301c609719bSwdenk 2302b37c7e5eSwdenk eg: #define I2C_READ ((immr->im_cpm.cp_pbdat & PB_SDA) != 0) 2303b37c7e5eSwdenk 2304c609719bSwdenk I2C_SDA(bit) 2305c609719bSwdenk 2306472d5460SYork Sun If <bit> is true, sets the I2C data line high. If it 2307472d5460SYork Sun is false, it clears it (low). 2308c609719bSwdenk 2309b37c7e5eSwdenk eg: #define I2C_SDA(bit) \ 2310b37c7e5eSwdenk if(bit) immr->im_cpm.cp_pbdat |= PB_SDA; \ 2311b37c7e5eSwdenk else immr->im_cpm.cp_pbdat &= ~PB_SDA 2312b37c7e5eSwdenk 2313c609719bSwdenk I2C_SCL(bit) 2314c609719bSwdenk 2315472d5460SYork Sun If <bit> is true, sets the I2C clock line high. If it 2316472d5460SYork Sun is false, it clears it (low). 2317c609719bSwdenk 2318b37c7e5eSwdenk eg: #define I2C_SCL(bit) \ 2319b37c7e5eSwdenk if(bit) immr->im_cpm.cp_pbdat |= PB_SCL; \ 2320b37c7e5eSwdenk else immr->im_cpm.cp_pbdat &= ~PB_SCL 2321b37c7e5eSwdenk 2322c609719bSwdenk I2C_DELAY 2323c609719bSwdenk 2324c609719bSwdenk This delay is invoked four times per clock cycle so this 2325c609719bSwdenk controls the rate of data transfer. The data rate thus 2326b37c7e5eSwdenk is 1 / (I2C_DELAY * 4). Often defined to be something 2327b37c7e5eSwdenk like: 2328b37c7e5eSwdenk 2329b37c7e5eSwdenk #define I2C_DELAY udelay(2) 2330c609719bSwdenk 2331793b5726SMike Frysinger CONFIG_SOFT_I2C_GPIO_SCL / CONFIG_SOFT_I2C_GPIO_SDA 2332793b5726SMike Frysinger 2333793b5726SMike Frysinger If your arch supports the generic GPIO framework (asm/gpio.h), 2334793b5726SMike Frysinger then you may alternatively define the two GPIOs that are to be 2335793b5726SMike Frysinger used as SCL / SDA. Any of the previous I2C_xxx macros will 2336793b5726SMike Frysinger have GPIO-based defaults assigned to them as appropriate. 2337793b5726SMike Frysinger 2338793b5726SMike Frysinger You should define these to the GPIO value as given directly to 2339793b5726SMike Frysinger the generic GPIO functions. 2340793b5726SMike Frysinger 23416d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_INIT_BOARD 234247cd00faSwdenk 234347cd00faSwdenk When a board is reset during an i2c bus transfer 234447cd00faSwdenk chips might think that the current transfer is still 234547cd00faSwdenk in progress. On some boards it is possible to access 234647cd00faSwdenk the i2c SCLK line directly, either by using the 234747cd00faSwdenk processor pin as a GPIO or by having a second pin 234847cd00faSwdenk connected to the bus. If this option is defined a 234947cd00faSwdenk custom i2c_init_board() routine in boards/xxx/board.c 235047cd00faSwdenk is run early in the boot sequence. 235147cd00faSwdenk 235226a33504SRichard Retanubun CONFIG_SYS_I2C_BOARD_LATE_INIT 235326a33504SRichard Retanubun 235426a33504SRichard Retanubun An alternative to CONFIG_SYS_I2C_INIT_BOARD. If this option is 235526a33504SRichard Retanubun defined a custom i2c_board_late_init() routine in 235626a33504SRichard Retanubun boards/xxx/board.c is run AFTER the operations in i2c_init() 235726a33504SRichard Retanubun is completed. This callpoint can be used to unreset i2c bus 235826a33504SRichard Retanubun using CPU i2c controller register accesses for CPUs whose i2c 235926a33504SRichard Retanubun controller provide such a method. It is called at the end of 236026a33504SRichard Retanubun i2c_init() to allow i2c_init operations to setup the i2c bus 236126a33504SRichard Retanubun controller on the CPU (e.g. setting bus speed & slave address). 236226a33504SRichard Retanubun 236317ea1177Swdenk CONFIG_I2CFAST (PPC405GP|PPC405EP only) 236417ea1177Swdenk 236517ea1177Swdenk This option enables configuration of bi_iic_fast[] flags 236617ea1177Swdenk in u-boot bd_info structure based on u-boot environment 236717ea1177Swdenk variable "i2cfast". (see also i2cfast) 236817ea1177Swdenk 2369bb99ad6dSBen Warren CONFIG_I2C_MULTI_BUS 2370bb99ad6dSBen Warren 2371bb99ad6dSBen Warren This option allows the use of multiple I2C buses, each of which 2372bb99ad6dSBen Warren must have a controller. At any point in time, only one bus is 2373bb99ad6dSBen Warren active. To switch to a different bus, use the 'i2c dev' command. 2374bb99ad6dSBen Warren Note that bus numbering is zero-based. 2375bb99ad6dSBen Warren 23766d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_NOPROBES 2377bb99ad6dSBen Warren 2378bb99ad6dSBen Warren This option specifies a list of I2C devices that will be skipped 23790f89c54bSPeter Tyser when the 'i2c probe' command is issued. If CONFIG_I2C_MULTI_BUS 23800f89c54bSPeter Tyser is set, specify a list of bus-device pairs. Otherwise, specify 23810f89c54bSPeter Tyser a 1D array of device addresses 2382bb99ad6dSBen Warren 2383bb99ad6dSBen Warren e.g. 2384bb99ad6dSBen Warren #undef CONFIG_I2C_MULTI_BUS 23856d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_I2C_NOPROBES {0x50,0x68} 2386bb99ad6dSBen Warren 2387bb99ad6dSBen Warren will skip addresses 0x50 and 0x68 on a board with one I2C bus 2388bb99ad6dSBen Warren 2389bb99ad6dSBen Warren #define CONFIG_I2C_MULTI_BUS 23906d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_I2C_MULTI_NOPROBES {{0,0x50},{0,0x68},{1,0x54}} 2391bb99ad6dSBen Warren 2392bb99ad6dSBen Warren will skip addresses 0x50 and 0x68 on bus 0 and address 0x54 on bus 1 2393bb99ad6dSBen Warren 23946d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SPD_BUS_NUM 2395be5e6181STimur Tabi 2396be5e6181STimur Tabi If defined, then this indicates the I2C bus number for DDR SPD. 2397be5e6181STimur Tabi If not defined, then U-Boot assumes that SPD is on I2C bus 0. 2398be5e6181STimur Tabi 23996d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_RTC_BUS_NUM 24000dc018ecSStefan Roese 24010dc018ecSStefan Roese If defined, then this indicates the I2C bus number for the RTC. 24020dc018ecSStefan Roese If not defined, then U-Boot assumes that RTC is on I2C bus 0. 24030dc018ecSStefan Roese 24046d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_DTT_BUS_NUM 24050dc018ecSStefan Roese 24060dc018ecSStefan Roese If defined, then this indicates the I2C bus number for the DTT. 24070dc018ecSStefan Roese If not defined, then U-Boot assumes that DTT is on I2C bus 0. 24080dc018ecSStefan Roese 24096d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_DTT_ADDR: 24109ebbb54fSVictor Gallardo 24119ebbb54fSVictor Gallardo If defined, specifies the I2C address of the DTT device. 24129ebbb54fSVictor Gallardo If not defined, then U-Boot uses predefined value for 24139ebbb54fSVictor Gallardo specified DTT device. 24149ebbb54fSVictor Gallardo 24152ac6985aSAndrew Dyer CONFIG_SOFT_I2C_READ_REPEATED_START 24162ac6985aSAndrew Dyer 24172ac6985aSAndrew Dyer defining this will force the i2c_read() function in 24182ac6985aSAndrew Dyer the soft_i2c driver to perform an I2C repeated start 24192ac6985aSAndrew Dyer between writing the address pointer and reading the 24202ac6985aSAndrew Dyer data. If this define is omitted the default behaviour 24212ac6985aSAndrew Dyer of doing a stop-start sequence will be used. Most I2C 24222ac6985aSAndrew Dyer devices can use either method, but some require one or 24232ac6985aSAndrew Dyer the other. 2424be5e6181STimur Tabi 2425c609719bSwdenk- SPI Support: CONFIG_SPI 2426c609719bSwdenk 2427c609719bSwdenk Enables SPI driver (so far only tested with 2428c609719bSwdenk SPI EEPROM, also an instance works with Crystal A/D and 2429c609719bSwdenk D/As on the SACSng board) 2430c609719bSwdenk 24316639562eSYoshihiro Shimoda CONFIG_SH_SPI 24326639562eSYoshihiro Shimoda 24336639562eSYoshihiro Shimoda Enables the driver for SPI controller on SuperH. Currently 24346639562eSYoshihiro Shimoda only SH7757 is supported. 24356639562eSYoshihiro Shimoda 2436c609719bSwdenk CONFIG_SPI_X 2437c609719bSwdenk 2438c609719bSwdenk Enables extended (16-bit) SPI EEPROM addressing. 2439c609719bSwdenk (symmetrical to CONFIG_I2C_X) 2440c609719bSwdenk 2441c609719bSwdenk CONFIG_SOFT_SPI 2442c609719bSwdenk 2443c609719bSwdenk Enables a software (bit-bang) SPI driver rather than 2444c609719bSwdenk using hardware support. This is a general purpose 2445c609719bSwdenk driver that only requires three general I/O port pins 2446c609719bSwdenk (two outputs, one input) to function. If this is 2447c609719bSwdenk defined, the board configuration must define several 2448c609719bSwdenk SPI configuration items (port pins to use, etc). For 2449c609719bSwdenk an example, see include/configs/sacsng.h. 2450c609719bSwdenk 245104a9e118SBen Warren CONFIG_HARD_SPI 245204a9e118SBen Warren 245304a9e118SBen Warren Enables a hardware SPI driver for general-purpose reads 245404a9e118SBen Warren and writes. As with CONFIG_SOFT_SPI, the board configuration 245504a9e118SBen Warren must define a list of chip-select function pointers. 245604a9e118SBen Warren Currently supported on some MPC8xxx processors. For an 245704a9e118SBen Warren example, see include/configs/mpc8349emds.h. 245804a9e118SBen Warren 245938254f45SGuennadi Liakhovetski CONFIG_MXC_SPI 246038254f45SGuennadi Liakhovetski 246138254f45SGuennadi Liakhovetski Enables the driver for the SPI controllers on i.MX and MXC 24622e3cd1cdSFabio Estevam SoCs. Currently i.MX31/35/51 are supported. 246338254f45SGuennadi Liakhovetski 24640133502eSMatthias Fuchs- FPGA Support: CONFIG_FPGA 24650133502eSMatthias Fuchs 24660133502eSMatthias Fuchs Enables FPGA subsystem. 24670133502eSMatthias Fuchs 24680133502eSMatthias Fuchs CONFIG_FPGA_<vendor> 24690133502eSMatthias Fuchs 24700133502eSMatthias Fuchs Enables support for specific chip vendors. 24710133502eSMatthias Fuchs (ALTERA, XILINX) 24720133502eSMatthias Fuchs 24730133502eSMatthias Fuchs CONFIG_FPGA_<family> 24740133502eSMatthias Fuchs 24750133502eSMatthias Fuchs Enables support for FPGA family. 24760133502eSMatthias Fuchs (SPARTAN2, SPARTAN3, VIRTEX2, CYCLONE2, ACEX1K, ACEX) 24770133502eSMatthias Fuchs 24780133502eSMatthias Fuchs CONFIG_FPGA_COUNT 2479c609719bSwdenk 2480c609719bSwdenk Specify the number of FPGA devices to support. 2481c609719bSwdenk 24826d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_PROG_FEEDBACK 2483c609719bSwdenk 2484c609719bSwdenk Enable printing of hash marks during FPGA configuration. 2485c609719bSwdenk 24866d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_BUSY 2487c609719bSwdenk 2488c609719bSwdenk Enable checks on FPGA configuration interface busy 2489c609719bSwdenk status by the configuration function. This option 2490c609719bSwdenk will require a board or device specific function to 2491c609719bSwdenk be written. 2492c609719bSwdenk 2493c609719bSwdenk CONFIG_FPGA_DELAY 2494c609719bSwdenk 2495c609719bSwdenk If defined, a function that provides delays in the FPGA 2496c609719bSwdenk configuration driver. 2497c609719bSwdenk 24986d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_CTRLC 2499c609719bSwdenk Allow Control-C to interrupt FPGA configuration 2500c609719bSwdenk 25016d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_ERROR 2502c609719bSwdenk 2503c609719bSwdenk Check for configuration errors during FPGA bitfile 2504c609719bSwdenk loading. For example, abort during Virtex II 2505c609719bSwdenk configuration if the INIT_B line goes low (which 2506c609719bSwdenk indicated a CRC error). 2507c609719bSwdenk 25086d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_INIT 2509c609719bSwdenk 2510c609719bSwdenk Maximum time to wait for the INIT_B line to deassert 2511c609719bSwdenk after PROB_B has been deasserted during a Virtex II 2512c609719bSwdenk FPGA configuration sequence. The default time is 500 251311ccc33fSMarcel Ziswiler ms. 2514c609719bSwdenk 25156d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_BUSY 2516c609719bSwdenk 2517c609719bSwdenk Maximum time to wait for BUSY to deassert during 251811ccc33fSMarcel Ziswiler Virtex II FPGA configuration. The default is 5 ms. 2519c609719bSwdenk 25206d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_CONFIG 2521c609719bSwdenk 2522c609719bSwdenk Time to wait after FPGA configuration. The default is 252311ccc33fSMarcel Ziswiler 200 ms. 2524c609719bSwdenk 2525c609719bSwdenk- Configuration Management: 2526c609719bSwdenk CONFIG_IDENT_STRING 2527c609719bSwdenk 2528c609719bSwdenk If defined, this string will be added to the U-Boot 2529c609719bSwdenk version information (U_BOOT_VERSION) 2530c609719bSwdenk 2531c609719bSwdenk- Vendor Parameter Protection: 2532c609719bSwdenk 2533c609719bSwdenk U-Boot considers the values of the environment 2534c609719bSwdenk variables "serial#" (Board Serial Number) and 25357152b1d0Swdenk "ethaddr" (Ethernet Address) to be parameters that 2536c609719bSwdenk are set once by the board vendor / manufacturer, and 2537c609719bSwdenk protects these variables from casual modification by 2538c609719bSwdenk the user. Once set, these variables are read-only, 2539c609719bSwdenk and write or delete attempts are rejected. You can 254011ccc33fSMarcel Ziswiler change this behaviour: 2541c609719bSwdenk 2542c609719bSwdenk If CONFIG_ENV_OVERWRITE is #defined in your config 2543c609719bSwdenk file, the write protection for vendor parameters is 254447cd00faSwdenk completely disabled. Anybody can change or delete 2545c609719bSwdenk these parameters. 2546c609719bSwdenk 2547c609719bSwdenk Alternatively, if you #define _both_ CONFIG_ETHADDR 2548c609719bSwdenk _and_ CONFIG_OVERWRITE_ETHADDR_ONCE, a default 254911ccc33fSMarcel Ziswiler Ethernet address is installed in the environment, 2550c609719bSwdenk which can be changed exactly ONCE by the user. [The 2551c609719bSwdenk serial# is unaffected by this, i. e. it remains 2552c609719bSwdenk read-only.] 2553c609719bSwdenk 25542598090bSJoe Hershberger The same can be accomplished in a more flexible way 25552598090bSJoe Hershberger for any variable by configuring the type of access 25562598090bSJoe Hershberger to allow for those variables in the ".flags" variable 25572598090bSJoe Hershberger or define CONFIG_ENV_FLAGS_LIST_STATIC. 25582598090bSJoe Hershberger 2559c609719bSwdenk- Protected RAM: 2560c609719bSwdenk CONFIG_PRAM 2561c609719bSwdenk 2562c609719bSwdenk Define this variable to enable the reservation of 2563c609719bSwdenk "protected RAM", i. e. RAM which is not overwritten 2564c609719bSwdenk by U-Boot. Define CONFIG_PRAM to hold the number of 2565c609719bSwdenk kB you want to reserve for pRAM. You can overwrite 2566c609719bSwdenk this default value by defining an environment 2567c609719bSwdenk variable "pram" to the number of kB you want to 2568c609719bSwdenk reserve. Note that the board info structure will 2569c609719bSwdenk still show the full amount of RAM. If pRAM is 2570c609719bSwdenk reserved, a new environment variable "mem" will 2571c609719bSwdenk automatically be defined to hold the amount of 2572c609719bSwdenk remaining RAM in a form that can be passed as boot 2573c609719bSwdenk argument to Linux, for instance like that: 2574c609719bSwdenk 2575fe126d8bSWolfgang Denk setenv bootargs ... mem=\${mem} 2576c609719bSwdenk saveenv 2577c609719bSwdenk 2578c609719bSwdenk This way you can tell Linux not to use this memory, 2579c609719bSwdenk either, which results in a memory region that will 2580c609719bSwdenk not be affected by reboots. 2581c609719bSwdenk 2582c609719bSwdenk *WARNING* If your board configuration uses automatic 2583c609719bSwdenk detection of the RAM size, you must make sure that 2584c609719bSwdenk this memory test is non-destructive. So far, the 2585c609719bSwdenk following board configurations are known to be 2586c609719bSwdenk "pRAM-clean": 2587c609719bSwdenk 25881b0757ecSWolfgang Denk IVMS8, IVML24, SPD8xx, TQM8xxL, 25891b0757ecSWolfgang Denk HERMES, IP860, RPXlite, LWMON, 2590544d97e9SWolfgang Denk FLAGADM, TQM8260 2591c609719bSwdenk 259240fef049SGabe Black- Access to physical memory region (> 4GB) 259340fef049SGabe Black Some basic support is provided for operations on memory not 259440fef049SGabe Black normally accessible to U-Boot - e.g. some architectures 259540fef049SGabe Black support access to more than 4GB of memory on 32-bit 259640fef049SGabe Black machines using physical address extension or similar. 259740fef049SGabe Black Define CONFIG_PHYSMEM to access this basic support, which 259840fef049SGabe Black currently only supports clearing the memory. 259940fef049SGabe Black 2600c609719bSwdenk- Error Recovery: 2601c609719bSwdenk CONFIG_PANIC_HANG 2602c609719bSwdenk 2603c609719bSwdenk Define this variable to stop the system in case of a 2604c609719bSwdenk fatal error, so that you have to reset it manually. 2605c609719bSwdenk This is probably NOT a good idea for an embedded 260611ccc33fSMarcel Ziswiler system where you want the system to reboot 2607c609719bSwdenk automatically as fast as possible, but it may be 2608c609719bSwdenk useful during development since you can try to debug 2609c609719bSwdenk the conditions that lead to the situation. 2610c609719bSwdenk 2611c609719bSwdenk CONFIG_NET_RETRY_COUNT 2612c609719bSwdenk 2613c609719bSwdenk This variable defines the number of retries for 2614c609719bSwdenk network operations like ARP, RARP, TFTP, or BOOTP 2615c609719bSwdenk before giving up the operation. If not defined, a 2616c609719bSwdenk default value of 5 is used. 2617c609719bSwdenk 261840cb90eeSGuennadi Liakhovetski CONFIG_ARP_TIMEOUT 261940cb90eeSGuennadi Liakhovetski 262040cb90eeSGuennadi Liakhovetski Timeout waiting for an ARP reply in milliseconds. 262140cb90eeSGuennadi Liakhovetski 262248a3e999STetsuyuki Kobayashi CONFIG_NFS_TIMEOUT 262348a3e999STetsuyuki Kobayashi 262448a3e999STetsuyuki Kobayashi Timeout in milliseconds used in NFS protocol. 262548a3e999STetsuyuki Kobayashi If you encounter "ERROR: Cannot umount" in nfs command, 262648a3e999STetsuyuki Kobayashi try longer timeout such as 262748a3e999STetsuyuki Kobayashi #define CONFIG_NFS_TIMEOUT 10000UL 262848a3e999STetsuyuki Kobayashi 2629c609719bSwdenk- Command Interpreter: 26308078f1a5SWolfgang Denk CONFIG_AUTO_COMPLETE 263104a85b3bSwdenk 263204a85b3bSwdenk Enable auto completion of commands using TAB. 263304a85b3bSwdenk 26348078f1a5SWolfgang Denk Note that this feature has NOT been implemented yet 26358078f1a5SWolfgang Denk for the "hush" shell. 26368078f1a5SWolfgang Denk 26378078f1a5SWolfgang Denk 26386d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_HUSH_PARSER 2639c609719bSwdenk 2640c609719bSwdenk Define this variable to enable the "hush" shell (from 2641c609719bSwdenk Busybox) as command line interpreter, thus enabling 2642c609719bSwdenk powerful command line syntax like 2643c609719bSwdenk if...then...else...fi conditionals or `&&' and '||' 2644c609719bSwdenk constructs ("shell scripts"). 2645c609719bSwdenk 2646c609719bSwdenk If undefined, you get the old, much simpler behaviour 2647c609719bSwdenk with a somewhat smaller memory footprint. 2648c609719bSwdenk 2649c609719bSwdenk 26506d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PROMPT_HUSH_PS2 2651c609719bSwdenk 2652c609719bSwdenk This defines the secondary prompt string, which is 2653c609719bSwdenk printed when the command interpreter needs more input 2654c609719bSwdenk to complete a command. Usually "> ". 2655c609719bSwdenk 2656c609719bSwdenk Note: 2657c609719bSwdenk 2658c609719bSwdenk In the current implementation, the local variables 2659c609719bSwdenk space and global environment variables space are 2660c609719bSwdenk separated. Local variables are those you define by 26613b57fe0aSwdenk simply typing `name=value'. To access a local 2662c609719bSwdenk variable later on, you have write `$name' or 26633b57fe0aSwdenk `${name}'; to execute the contents of a variable 26643b57fe0aSwdenk directly type `$name' at the command prompt. 2665c609719bSwdenk 2666c609719bSwdenk Global environment variables are those you use 2667c609719bSwdenk setenv/printenv to work with. To run a command stored 2668c609719bSwdenk in such a variable, you need to use the run command, 2669c609719bSwdenk and you must not use the '$' sign to access them. 2670c609719bSwdenk 2671c609719bSwdenk To store commands and special characters in a 2672c609719bSwdenk variable, please use double quotation marks 2673c609719bSwdenk surrounding the whole text of the variable, instead 2674c609719bSwdenk of the backslashes before semicolons and special 2675c609719bSwdenk symbols. 2676c609719bSwdenk 2677aa0c71acSWolfgang Denk- Commandline Editing and History: 2678aa0c71acSWolfgang Denk CONFIG_CMDLINE_EDITING 2679aa0c71acSWolfgang Denk 268011ccc33fSMarcel Ziswiler Enable editing and History functions for interactive 2681aa0c71acSWolfgang Denk commandline input operations 2682aa0c71acSWolfgang Denk 2683a8c7c708Swdenk- Default Environment: 2684c609719bSwdenk CONFIG_EXTRA_ENV_SETTINGS 2685c609719bSwdenk 2686c609719bSwdenk Define this to contain any number of null terminated 2687c609719bSwdenk strings (variable = value pairs) that will be part of 26887152b1d0Swdenk the default environment compiled into the boot image. 26892262cfeeSwdenk 2690c609719bSwdenk For example, place something like this in your 2691c609719bSwdenk board's config file: 2692c609719bSwdenk 2693c609719bSwdenk #define CONFIG_EXTRA_ENV_SETTINGS \ 2694c609719bSwdenk "myvar1=value1\0" \ 2695c609719bSwdenk "myvar2=value2\0" 2696c609719bSwdenk 2697c609719bSwdenk Warning: This method is based on knowledge about the 2698c609719bSwdenk internal format how the environment is stored by the 26992262cfeeSwdenk U-Boot code. This is NOT an official, exported 2700c609719bSwdenk interface! Although it is unlikely that this format 27017152b1d0Swdenk will change soon, there is no guarantee either. 2702c609719bSwdenk You better know what you are doing here. 2703c609719bSwdenk 2704c609719bSwdenk Note: overly (ab)use of the default environment is 2705c609719bSwdenk discouraged. Make sure to check other ways to preset 270674de7aefSWolfgang Denk the environment like the "source" command or the 2707c609719bSwdenk boot command first. 2708c609719bSwdenk 27095e724ca2SStephen Warren CONFIG_ENV_VARS_UBOOT_CONFIG 27105e724ca2SStephen Warren 27115e724ca2SStephen Warren Define this in order to add variables describing the 27125e724ca2SStephen Warren U-Boot build configuration to the default environment. 27135e724ca2SStephen Warren These will be named arch, cpu, board, vendor, and soc. 27145e724ca2SStephen Warren 27155e724ca2SStephen Warren Enabling this option will cause the following to be defined: 27165e724ca2SStephen Warren 27175e724ca2SStephen Warren - CONFIG_SYS_ARCH 27185e724ca2SStephen Warren - CONFIG_SYS_CPU 27195e724ca2SStephen Warren - CONFIG_SYS_BOARD 27205e724ca2SStephen Warren - CONFIG_SYS_VENDOR 27215e724ca2SStephen Warren - CONFIG_SYS_SOC 27225e724ca2SStephen Warren 27237e27f89fSTom Rini CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG 27247e27f89fSTom Rini 27257e27f89fSTom Rini Define this in order to add variables describing certain 27267e27f89fSTom Rini run-time determined information about the hardware to the 27277e27f89fSTom Rini environment. These will be named board_name, board_rev. 27287e27f89fSTom Rini 272906fd8538SSimon Glass CONFIG_DELAY_ENVIRONMENT 273006fd8538SSimon Glass 273106fd8538SSimon Glass Normally the environment is loaded when the board is 273206fd8538SSimon Glass intialised so that it is available to U-Boot. This inhibits 273306fd8538SSimon Glass that so that the environment is not available until 273406fd8538SSimon Glass explicitly loaded later by U-Boot code. With CONFIG_OF_CONTROL 273506fd8538SSimon Glass this is instead controlled by the value of 273606fd8538SSimon Glass /config/load-environment. 273706fd8538SSimon Glass 2738a8c7c708Swdenk- DataFlash Support: 27392abbe075Swdenk CONFIG_HAS_DATAFLASH 27402abbe075Swdenk 27412abbe075Swdenk Defining this option enables DataFlash features and 27422abbe075Swdenk allows to read/write in Dataflash via the standard 27432abbe075Swdenk commands cp, md... 27442abbe075Swdenk 2745f61ec45eSEric Nelson- Serial Flash support 2746f61ec45eSEric Nelson CONFIG_CMD_SF 2747f61ec45eSEric Nelson 2748f61ec45eSEric Nelson Defining this option enables SPI flash commands 2749f61ec45eSEric Nelson 'sf probe/read/write/erase/update'. 2750f61ec45eSEric Nelson 2751f61ec45eSEric Nelson Usage requires an initial 'probe' to define the serial 2752f61ec45eSEric Nelson flash parameters, followed by read/write/erase/update 2753f61ec45eSEric Nelson commands. 2754f61ec45eSEric Nelson 2755f61ec45eSEric Nelson The following defaults may be provided by the platform 2756f61ec45eSEric Nelson to handle the common case when only a single serial 2757f61ec45eSEric Nelson flash is present on the system. 2758f61ec45eSEric Nelson 2759f61ec45eSEric Nelson CONFIG_SF_DEFAULT_BUS Bus identifier 2760f61ec45eSEric Nelson CONFIG_SF_DEFAULT_CS Chip-select 2761f61ec45eSEric Nelson CONFIG_SF_DEFAULT_MODE (see include/spi.h) 2762f61ec45eSEric Nelson CONFIG_SF_DEFAULT_SPEED in Hz 2763f61ec45eSEric Nelson 276424007273SSimon Glass CONFIG_CMD_SF_TEST 276524007273SSimon Glass 276624007273SSimon Glass Define this option to include a destructive SPI flash 276724007273SSimon Glass test ('sf test'). 276824007273SSimon Glass 27691dcd6d03SJagannadha Sutradharudu Teki CONFIG_SPI_FLASH_BAR Ban/Extended Addr Reg 27701dcd6d03SJagannadha Sutradharudu Teki 27711dcd6d03SJagannadha Sutradharudu Teki Define this option to use the Bank addr/Extended addr 27721dcd6d03SJagannadha Sutradharudu Teki support on SPI flashes which has size > 16Mbytes. 27731dcd6d03SJagannadha Sutradharudu Teki 2774b902e07cSJagannadha Sutradharudu Teki CONFIG_SF_DUAL_FLASH Dual flash memories 2775b902e07cSJagannadha Sutradharudu Teki 2776b902e07cSJagannadha Sutradharudu Teki Define this option to use dual flash support where two flash 2777b902e07cSJagannadha Sutradharudu Teki memories can be connected with a given cs line. 2778b902e07cSJagannadha Sutradharudu Teki currently Xilinx Zynq qspi support these type of connections. 2779b902e07cSJagannadha Sutradharudu Teki 27803f85ce27Swdenk- SystemACE Support: 27813f85ce27Swdenk CONFIG_SYSTEMACE 27823f85ce27Swdenk 27833f85ce27Swdenk Adding this option adds support for Xilinx SystemACE 27843f85ce27Swdenk chips attached via some sort of local bus. The address 278511ccc33fSMarcel Ziswiler of the chip must also be defined in the 27866d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SYSTEMACE_BASE macro. For example: 27873f85ce27Swdenk 27883f85ce27Swdenk #define CONFIG_SYSTEMACE 27896d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_SYSTEMACE_BASE 0xf0000000 27903f85ce27Swdenk 27913f85ce27Swdenk When SystemACE support is added, the "ace" device type 27923f85ce27Swdenk becomes available to the fat commands, i.e. fatls. 27933f85ce27Swdenk 2794ecb0ccd9SWolfgang Denk- TFTP Fixed UDP Port: 2795ecb0ccd9SWolfgang Denk CONFIG_TFTP_PORT 2796ecb0ccd9SWolfgang Denk 279728cb9375SWolfgang Denk If this is defined, the environment variable tftpsrcp 2798ecb0ccd9SWolfgang Denk is used to supply the TFTP UDP source port value. 279928cb9375SWolfgang Denk If tftpsrcp isn't defined, the normal pseudo-random port 2800ecb0ccd9SWolfgang Denk number generator is used. 2801ecb0ccd9SWolfgang Denk 280228cb9375SWolfgang Denk Also, the environment variable tftpdstp is used to supply 280328cb9375SWolfgang Denk the TFTP UDP destination port value. If tftpdstp isn't 280428cb9375SWolfgang Denk defined, the normal port 69 is used. 280528cb9375SWolfgang Denk 280628cb9375SWolfgang Denk The purpose for tftpsrcp is to allow a TFTP server to 2807ecb0ccd9SWolfgang Denk blindly start the TFTP transfer using the pre-configured 2808ecb0ccd9SWolfgang Denk target IP address and UDP port. This has the effect of 2809ecb0ccd9SWolfgang Denk "punching through" the (Windows XP) firewall, allowing 2810ecb0ccd9SWolfgang Denk the remainder of the TFTP transfer to proceed normally. 2811ecb0ccd9SWolfgang Denk A better solution is to properly configure the firewall, 2812ecb0ccd9SWolfgang Denk but sometimes that is not allowed. 2813ecb0ccd9SWolfgang Denk 2814bf36c5d5SSimon Glass- Hashing support: 2815bf36c5d5SSimon Glass CONFIG_CMD_HASH 2816bf36c5d5SSimon Glass 2817bf36c5d5SSimon Glass This enables a generic 'hash' command which can produce 2818bf36c5d5SSimon Glass hashes / digests from a few algorithms (e.g. SHA1, SHA256). 2819bf36c5d5SSimon Glass 2820bf36c5d5SSimon Glass CONFIG_HASH_VERIFY 2821bf36c5d5SSimon Glass 2822bf36c5d5SSimon Glass Enable the hash verify command (hash -v). This adds to code 2823bf36c5d5SSimon Glass size a little. 2824bf36c5d5SSimon Glass 2825bf36c5d5SSimon Glass CONFIG_SHA1 - support SHA1 hashing 2826bf36c5d5SSimon Glass CONFIG_SHA256 - support SHA256 hashing 2827bf36c5d5SSimon Glass 2828bf36c5d5SSimon Glass Note: There is also a sha1sum command, which should perhaps 2829bf36c5d5SSimon Glass be deprecated in favour of 'hash sha1'. 2830bf36c5d5SSimon Glass 2831a11f1873SRobert Winkler- Freescale i.MX specific commands: 2832a11f1873SRobert Winkler CONFIG_CMD_HDMIDETECT 2833a11f1873SRobert Winkler This enables 'hdmidet' command which returns true if an 2834a11f1873SRobert Winkler HDMI monitor is detected. This command is i.MX 6 specific. 2835a11f1873SRobert Winkler 2836a11f1873SRobert Winkler CONFIG_CMD_BMODE 2837a11f1873SRobert Winkler This enables the 'bmode' (bootmode) command for forcing 2838a11f1873SRobert Winkler a boot from specific media. 2839a11f1873SRobert Winkler 2840a11f1873SRobert Winkler This is useful for forcing the ROM's usb downloader to 2841a11f1873SRobert Winkler activate upon a watchdog reset which is nice when iterating 2842a11f1873SRobert Winkler on U-Boot. Using the reset button or running bmode normal 2843a11f1873SRobert Winkler will set it back to normal. This command currently 2844a11f1873SRobert Winkler supports i.MX53 and i.MX6. 2845a11f1873SRobert Winkler 284619c402afSSimon Glass- Signing support: 284719c402afSSimon Glass CONFIG_RSA 284819c402afSSimon Glass 284919c402afSSimon Glass This enables the RSA algorithm used for FIT image verification 285019c402afSSimon Glass in U-Boot. See doc/uImage/signature for more information. 285119c402afSSimon Glass 285219c402afSSimon Glass The signing part is build into mkimage regardless of this 285319c402afSSimon Glass option. 285419c402afSSimon Glass 285519c402afSSimon Glass 2856a8c7c708Swdenk- Show boot progress: 2857c609719bSwdenk CONFIG_SHOW_BOOT_PROGRESS 2858c609719bSwdenk 2859c609719bSwdenk Defining this option allows to add some board- 2860c609719bSwdenk specific code (calling a user-provided function 2861c609719bSwdenk "show_boot_progress(int)") that enables you to show 2862c609719bSwdenk the system's boot progress on some display (for 2863c609719bSwdenk example, some LED's) on your board. At the moment, 2864c609719bSwdenk the following checkpoints are implemented: 2865c609719bSwdenk 28663a608ca0SSimon Glass- Detailed boot stage timing 28673a608ca0SSimon Glass CONFIG_BOOTSTAGE 28683a608ca0SSimon Glass Define this option to get detailed timing of each stage 28693a608ca0SSimon Glass of the boot process. 28703a608ca0SSimon Glass 28713a608ca0SSimon Glass CONFIG_BOOTSTAGE_USER_COUNT 28723a608ca0SSimon Glass This is the number of available user bootstage records. 28733a608ca0SSimon Glass Each time you call bootstage_mark(BOOTSTAGE_ID_ALLOC, ...) 28743a608ca0SSimon Glass a new ID will be allocated from this stash. If you exceed 28753a608ca0SSimon Glass the limit, recording will stop. 28763a608ca0SSimon Glass 28773a608ca0SSimon Glass CONFIG_BOOTSTAGE_REPORT 28783a608ca0SSimon Glass Define this to print a report before boot, similar to this: 28793a608ca0SSimon Glass 28803a608ca0SSimon Glass Timer summary in microseconds: 28813a608ca0SSimon Glass Mark Elapsed Stage 28823a608ca0SSimon Glass 0 0 reset 28833a608ca0SSimon Glass 3,575,678 3,575,678 board_init_f start 28843a608ca0SSimon Glass 3,575,695 17 arch_cpu_init A9 28853a608ca0SSimon Glass 3,575,777 82 arch_cpu_init done 28863a608ca0SSimon Glass 3,659,598 83,821 board_init_r start 28873a608ca0SSimon Glass 3,910,375 250,777 main_loop 28883a608ca0SSimon Glass 29,916,167 26,005,792 bootm_start 28893a608ca0SSimon Glass 30,361,327 445,160 start_kernel 28903a608ca0SSimon Glass 28912eba38cfSSimon Glass CONFIG_CMD_BOOTSTAGE 28922eba38cfSSimon Glass Add a 'bootstage' command which supports printing a report 28932eba38cfSSimon Glass and un/stashing of bootstage data. 28942eba38cfSSimon Glass 289594fd1316SSimon Glass CONFIG_BOOTSTAGE_FDT 289694fd1316SSimon Glass Stash the bootstage information in the FDT. A root 'bootstage' 289794fd1316SSimon Glass node is created with each bootstage id as a child. Each child 289894fd1316SSimon Glass has a 'name' property and either 'mark' containing the 289994fd1316SSimon Glass mark time in microsecond, or 'accum' containing the 290094fd1316SSimon Glass accumulated time for that bootstage id in microseconds. 290194fd1316SSimon Glass For example: 290294fd1316SSimon Glass 290394fd1316SSimon Glass bootstage { 290494fd1316SSimon Glass 154 { 290594fd1316SSimon Glass name = "board_init_f"; 290694fd1316SSimon Glass mark = <3575678>; 290794fd1316SSimon Glass }; 290894fd1316SSimon Glass 170 { 290994fd1316SSimon Glass name = "lcd"; 291094fd1316SSimon Glass accum = <33482>; 291194fd1316SSimon Glass }; 291294fd1316SSimon Glass }; 291394fd1316SSimon Glass 291494fd1316SSimon Glass Code in the Linux kernel can find this in /proc/devicetree. 291594fd1316SSimon Glass 29161372cce2SMarian BalakowiczLegacy uImage format: 29171372cce2SMarian Balakowicz 2918c609719bSwdenk Arg Where When 2919c609719bSwdenk 1 common/cmd_bootm.c before attempting to boot an image 2920c609719bSwdenk -1 common/cmd_bootm.c Image header has bad magic number 2921c609719bSwdenk 2 common/cmd_bootm.c Image header has correct magic number 2922c609719bSwdenk -2 common/cmd_bootm.c Image header has bad checksum 2923c609719bSwdenk 3 common/cmd_bootm.c Image header has correct checksum 2924c609719bSwdenk -3 common/cmd_bootm.c Image data has bad checksum 2925c609719bSwdenk 4 common/cmd_bootm.c Image data has correct checksum 2926c609719bSwdenk -4 common/cmd_bootm.c Image is for unsupported architecture 2927c609719bSwdenk 5 common/cmd_bootm.c Architecture check OK 29281372cce2SMarian Balakowicz -5 common/cmd_bootm.c Wrong Image Type (not kernel, multi) 2929c609719bSwdenk 6 common/cmd_bootm.c Image Type check OK 2930c609719bSwdenk -6 common/cmd_bootm.c gunzip uncompression error 2931c609719bSwdenk -7 common/cmd_bootm.c Unimplemented compression type 2932c609719bSwdenk 7 common/cmd_bootm.c Uncompression OK 29331372cce2SMarian Balakowicz 8 common/cmd_bootm.c No uncompress/copy overwrite error 2934c609719bSwdenk -9 common/cmd_bootm.c Unsupported OS (not Linux, BSD, VxWorks, QNX) 29351372cce2SMarian Balakowicz 29361372cce2SMarian Balakowicz 9 common/image.c Start initial ramdisk verification 29371372cce2SMarian Balakowicz -10 common/image.c Ramdisk header has bad magic number 29381372cce2SMarian Balakowicz -11 common/image.c Ramdisk header has bad checksum 29391372cce2SMarian Balakowicz 10 common/image.c Ramdisk header is OK 29401372cce2SMarian Balakowicz -12 common/image.c Ramdisk data has bad checksum 29411372cce2SMarian Balakowicz 11 common/image.c Ramdisk data has correct checksum 29421372cce2SMarian Balakowicz 12 common/image.c Ramdisk verification complete, start loading 294311ccc33fSMarcel Ziswiler -13 common/image.c Wrong Image Type (not PPC Linux ramdisk) 29441372cce2SMarian Balakowicz 13 common/image.c Start multifile image verification 29451372cce2SMarian Balakowicz 14 common/image.c No initial ramdisk, no multifile, continue. 29461372cce2SMarian Balakowicz 2947ea0364f1SPeter Tyser 15 arch/<arch>/lib/bootm.c All preparation done, transferring control to OS 2948c609719bSwdenk 2949a47a12beSStefan Roese -30 arch/powerpc/lib/board.c Fatal error, hang the system 295063e73c9aSwdenk -31 post/post.c POST test failed, detected by post_output_backlog() 295163e73c9aSwdenk -32 post/post.c POST test failed, detected by post_run_single() 295263e73c9aSwdenk 2953566a494fSHeiko Schocher 34 common/cmd_doc.c before loading a Image from a DOC device 2954566a494fSHeiko Schocher -35 common/cmd_doc.c Bad usage of "doc" command 2955566a494fSHeiko Schocher 35 common/cmd_doc.c correct usage of "doc" command 2956566a494fSHeiko Schocher -36 common/cmd_doc.c No boot device 2957566a494fSHeiko Schocher 36 common/cmd_doc.c correct boot device 2958566a494fSHeiko Schocher -37 common/cmd_doc.c Unknown Chip ID on boot device 2959566a494fSHeiko Schocher 37 common/cmd_doc.c correct chip ID found, device available 2960566a494fSHeiko Schocher -38 common/cmd_doc.c Read Error on boot device 2961566a494fSHeiko Schocher 38 common/cmd_doc.c reading Image header from DOC device OK 2962566a494fSHeiko Schocher -39 common/cmd_doc.c Image header has bad magic number 2963566a494fSHeiko Schocher 39 common/cmd_doc.c Image header has correct magic number 2964566a494fSHeiko Schocher -40 common/cmd_doc.c Error reading Image from DOC device 2965566a494fSHeiko Schocher 40 common/cmd_doc.c Image header has correct magic number 2966566a494fSHeiko Schocher 41 common/cmd_ide.c before loading a Image from a IDE device 2967566a494fSHeiko Schocher -42 common/cmd_ide.c Bad usage of "ide" command 2968566a494fSHeiko Schocher 42 common/cmd_ide.c correct usage of "ide" command 2969566a494fSHeiko Schocher -43 common/cmd_ide.c No boot device 2970566a494fSHeiko Schocher 43 common/cmd_ide.c boot device found 2971566a494fSHeiko Schocher -44 common/cmd_ide.c Device not available 2972566a494fSHeiko Schocher 44 common/cmd_ide.c Device available 2973566a494fSHeiko Schocher -45 common/cmd_ide.c wrong partition selected 2974566a494fSHeiko Schocher 45 common/cmd_ide.c partition selected 2975566a494fSHeiko Schocher -46 common/cmd_ide.c Unknown partition table 2976566a494fSHeiko Schocher 46 common/cmd_ide.c valid partition table found 2977566a494fSHeiko Schocher -47 common/cmd_ide.c Invalid partition type 2978566a494fSHeiko Schocher 47 common/cmd_ide.c correct partition type 2979566a494fSHeiko Schocher -48 common/cmd_ide.c Error reading Image Header on boot device 2980566a494fSHeiko Schocher 48 common/cmd_ide.c reading Image Header from IDE device OK 2981566a494fSHeiko Schocher -49 common/cmd_ide.c Image header has bad magic number 2982566a494fSHeiko Schocher 49 common/cmd_ide.c Image header has correct magic number 2983566a494fSHeiko Schocher -50 common/cmd_ide.c Image header has bad checksum 2984566a494fSHeiko Schocher 50 common/cmd_ide.c Image header has correct checksum 2985566a494fSHeiko Schocher -51 common/cmd_ide.c Error reading Image from IDE device 2986566a494fSHeiko Schocher 51 common/cmd_ide.c reading Image from IDE device OK 2987566a494fSHeiko Schocher 52 common/cmd_nand.c before loading a Image from a NAND device 2988566a494fSHeiko Schocher -53 common/cmd_nand.c Bad usage of "nand" command 2989566a494fSHeiko Schocher 53 common/cmd_nand.c correct usage of "nand" command 2990566a494fSHeiko Schocher -54 common/cmd_nand.c No boot device 2991566a494fSHeiko Schocher 54 common/cmd_nand.c boot device found 2992566a494fSHeiko Schocher -55 common/cmd_nand.c Unknown Chip ID on boot device 2993566a494fSHeiko Schocher 55 common/cmd_nand.c correct chip ID found, device available 2994566a494fSHeiko Schocher -56 common/cmd_nand.c Error reading Image Header on boot device 2995566a494fSHeiko Schocher 56 common/cmd_nand.c reading Image Header from NAND device OK 2996566a494fSHeiko Schocher -57 common/cmd_nand.c Image header has bad magic number 2997566a494fSHeiko Schocher 57 common/cmd_nand.c Image header has correct magic number 2998566a494fSHeiko Schocher -58 common/cmd_nand.c Error reading Image from NAND device 2999566a494fSHeiko Schocher 58 common/cmd_nand.c reading Image from NAND device OK 3000c609719bSwdenk 3001566a494fSHeiko Schocher -60 common/env_common.c Environment has a bad CRC, using default 3002c609719bSwdenk 3003566a494fSHeiko Schocher 64 net/eth.c starting with Ethernet configuration. 3004566a494fSHeiko Schocher -64 net/eth.c no Ethernet found. 3005566a494fSHeiko Schocher 65 net/eth.c Ethernet found. 3006206c60cbSwdenk 3007566a494fSHeiko Schocher -80 common/cmd_net.c usage wrong 3008566a494fSHeiko Schocher 80 common/cmd_net.c before calling NetLoop() 300911ccc33fSMarcel Ziswiler -81 common/cmd_net.c some error in NetLoop() occurred 3010566a494fSHeiko Schocher 81 common/cmd_net.c NetLoop() back without error 3011566a494fSHeiko Schocher -82 common/cmd_net.c size == 0 (File with size 0 loaded) 3012566a494fSHeiko Schocher 82 common/cmd_net.c trying automatic boot 301374de7aefSWolfgang Denk 83 common/cmd_net.c running "source" command 301474de7aefSWolfgang Denk -83 common/cmd_net.c some error in automatic boot or "source" command 3015566a494fSHeiko Schocher 84 common/cmd_net.c end without errors 3016c609719bSwdenk 30171372cce2SMarian BalakowiczFIT uImage format: 30181372cce2SMarian Balakowicz 30191372cce2SMarian Balakowicz Arg Where When 30201372cce2SMarian Balakowicz 100 common/cmd_bootm.c Kernel FIT Image has correct format 30211372cce2SMarian Balakowicz -100 common/cmd_bootm.c Kernel FIT Image has incorrect format 30221372cce2SMarian Balakowicz 101 common/cmd_bootm.c No Kernel subimage unit name, using configuration 30231372cce2SMarian Balakowicz -101 common/cmd_bootm.c Can't get configuration for kernel subimage 30241372cce2SMarian Balakowicz 102 common/cmd_bootm.c Kernel unit name specified 30251372cce2SMarian Balakowicz -103 common/cmd_bootm.c Can't get kernel subimage node offset 3026f773bea8SMarian Balakowicz 103 common/cmd_bootm.c Found configuration node 30271372cce2SMarian Balakowicz 104 common/cmd_bootm.c Got kernel subimage node offset 30281372cce2SMarian Balakowicz -104 common/cmd_bootm.c Kernel subimage hash verification failed 30291372cce2SMarian Balakowicz 105 common/cmd_bootm.c Kernel subimage hash verification OK 30301372cce2SMarian Balakowicz -105 common/cmd_bootm.c Kernel subimage is for unsupported architecture 30311372cce2SMarian Balakowicz 106 common/cmd_bootm.c Architecture check OK 303211ccc33fSMarcel Ziswiler -106 common/cmd_bootm.c Kernel subimage has wrong type 303311ccc33fSMarcel Ziswiler 107 common/cmd_bootm.c Kernel subimage type OK 30341372cce2SMarian Balakowicz -107 common/cmd_bootm.c Can't get kernel subimage data/size 30351372cce2SMarian Balakowicz 108 common/cmd_bootm.c Got kernel subimage data/size 30361372cce2SMarian Balakowicz -108 common/cmd_bootm.c Wrong image type (not legacy, FIT) 30371372cce2SMarian Balakowicz -109 common/cmd_bootm.c Can't get kernel subimage type 30381372cce2SMarian Balakowicz -110 common/cmd_bootm.c Can't get kernel subimage comp 30391372cce2SMarian Balakowicz -111 common/cmd_bootm.c Can't get kernel subimage os 30401372cce2SMarian Balakowicz -112 common/cmd_bootm.c Can't get kernel subimage load address 30411372cce2SMarian Balakowicz -113 common/cmd_bootm.c Image uncompress/copy overwrite error 30421372cce2SMarian Balakowicz 30431372cce2SMarian Balakowicz 120 common/image.c Start initial ramdisk verification 30441372cce2SMarian Balakowicz -120 common/image.c Ramdisk FIT image has incorrect format 30451372cce2SMarian Balakowicz 121 common/image.c Ramdisk FIT image has correct format 304611ccc33fSMarcel Ziswiler 122 common/image.c No ramdisk subimage unit name, using configuration 30471372cce2SMarian Balakowicz -122 common/image.c Can't get configuration for ramdisk subimage 30481372cce2SMarian Balakowicz 123 common/image.c Ramdisk unit name specified 30491372cce2SMarian Balakowicz -124 common/image.c Can't get ramdisk subimage node offset 30501372cce2SMarian Balakowicz 125 common/image.c Got ramdisk subimage node offset 30511372cce2SMarian Balakowicz -125 common/image.c Ramdisk subimage hash verification failed 30521372cce2SMarian Balakowicz 126 common/image.c Ramdisk subimage hash verification OK 30531372cce2SMarian Balakowicz -126 common/image.c Ramdisk subimage for unsupported architecture 30541372cce2SMarian Balakowicz 127 common/image.c Architecture check OK 30551372cce2SMarian Balakowicz -127 common/image.c Can't get ramdisk subimage data/size 30561372cce2SMarian Balakowicz 128 common/image.c Got ramdisk subimage data/size 30571372cce2SMarian Balakowicz 129 common/image.c Can't get ramdisk load address 30581372cce2SMarian Balakowicz -129 common/image.c Got ramdisk load address 30591372cce2SMarian Balakowicz 306011ccc33fSMarcel Ziswiler -130 common/cmd_doc.c Incorrect FIT image format 30611372cce2SMarian Balakowicz 131 common/cmd_doc.c FIT image format OK 30621372cce2SMarian Balakowicz 306311ccc33fSMarcel Ziswiler -140 common/cmd_ide.c Incorrect FIT image format 30641372cce2SMarian Balakowicz 141 common/cmd_ide.c FIT image format OK 30651372cce2SMarian Balakowicz 306611ccc33fSMarcel Ziswiler -150 common/cmd_nand.c Incorrect FIT image format 30671372cce2SMarian Balakowicz 151 common/cmd_nand.c FIT image format OK 30681372cce2SMarian Balakowicz 3069d95f6ec7SGabe Black- FIT image support: 3070d95f6ec7SGabe Black CONFIG_FIT 3071d95f6ec7SGabe Black Enable support for the FIT uImage format. 3072d95f6ec7SGabe Black 3073d95f6ec7SGabe Black CONFIG_FIT_BEST_MATCH 3074d95f6ec7SGabe Black When no configuration is explicitly selected, default to the 3075d95f6ec7SGabe Black one whose fdt's compatibility field best matches that of 3076d95f6ec7SGabe Black U-Boot itself. A match is considered "best" if it matches the 3077d95f6ec7SGabe Black most specific compatibility entry of U-Boot's fdt's root node. 3078d95f6ec7SGabe Black The order of entries in the configuration's fdt is ignored. 3079d95f6ec7SGabe Black 30803e569a6bSSimon Glass CONFIG_FIT_SIGNATURE 30813e569a6bSSimon Glass This option enables signature verification of FIT uImages, 30823e569a6bSSimon Glass using a hash signed and verified using RSA. See 30833e569a6bSSimon Glass doc/uImage.FIT/signature.txt for more details. 30843e569a6bSSimon Glass 30854cf2609bSWolfgang Denk- Standalone program support: 30864cf2609bSWolfgang Denk CONFIG_STANDALONE_LOAD_ADDR 30874cf2609bSWolfgang Denk 30886feff899SWolfgang Denk This option defines a board specific value for the 30896feff899SWolfgang Denk address where standalone program gets loaded, thus 30906feff899SWolfgang Denk overwriting the architecture dependent default 30914cf2609bSWolfgang Denk settings. 30924cf2609bSWolfgang Denk 30934cf2609bSWolfgang Denk- Frame Buffer Address: 30944cf2609bSWolfgang Denk CONFIG_FB_ADDR 30954cf2609bSWolfgang Denk 30964cf2609bSWolfgang Denk Define CONFIG_FB_ADDR if you want to use specific 309744a53b57SWolfgang Denk address for frame buffer. This is typically the case 309844a53b57SWolfgang Denk when using a graphics controller has separate video 309944a53b57SWolfgang Denk memory. U-Boot will then place the frame buffer at 310044a53b57SWolfgang Denk the given address instead of dynamically reserving it 310144a53b57SWolfgang Denk in system RAM by calling lcd_setmem(), which grabs 310244a53b57SWolfgang Denk the memory for the frame buffer depending on the 310344a53b57SWolfgang Denk configured panel size. 31044cf2609bSWolfgang Denk 31054cf2609bSWolfgang Denk Please see board_init_f function. 31064cf2609bSWolfgang Denk 3107cccfc2abSDetlev Zundel- Automatic software updates via TFTP server 3108cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP 3109cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP_CNT_MAX 3110cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP_MSEC_MAX 3111cccfc2abSDetlev Zundel 3112cccfc2abSDetlev Zundel These options enable and control the auto-update feature; 3113cccfc2abSDetlev Zundel for a more detailed description refer to doc/README.update. 3114cccfc2abSDetlev Zundel 3115cccfc2abSDetlev Zundel- MTD Support (mtdparts command, UBI support) 3116cccfc2abSDetlev Zundel CONFIG_MTD_DEVICE 3117cccfc2abSDetlev Zundel 3118cccfc2abSDetlev Zundel Adds the MTD device infrastructure from the Linux kernel. 3119cccfc2abSDetlev Zundel Needed for mtdparts command support. 3120cccfc2abSDetlev Zundel 3121cccfc2abSDetlev Zundel CONFIG_MTD_PARTITIONS 3122cccfc2abSDetlev Zundel 3123cccfc2abSDetlev Zundel Adds the MTD partitioning infrastructure from the Linux 3124cccfc2abSDetlev Zundel kernel. Needed for UBI support. 3125cccfc2abSDetlev Zundel 312670c219cdSJoe Hershberger- UBI support 312770c219cdSJoe Hershberger CONFIG_CMD_UBI 312870c219cdSJoe Hershberger 312970c219cdSJoe Hershberger Adds commands for interacting with MTD partitions formatted 313070c219cdSJoe Hershberger with the UBI flash translation layer 313170c219cdSJoe Hershberger 313270c219cdSJoe Hershberger Requires also defining CONFIG_RBTREE 313370c219cdSJoe Hershberger 3134147162daSJoe Hershberger CONFIG_UBI_SILENCE_MSG 3135147162daSJoe Hershberger 3136147162daSJoe Hershberger Make the verbose messages from UBI stop printing. This leaves 3137147162daSJoe Hershberger warnings and errors enabled. 3138147162daSJoe Hershberger 313970c219cdSJoe Hershberger- UBIFS support 314070c219cdSJoe Hershberger CONFIG_CMD_UBIFS 314170c219cdSJoe Hershberger 314270c219cdSJoe Hershberger Adds commands for interacting with UBI volumes formatted as 314370c219cdSJoe Hershberger UBIFS. UBIFS is read-only in u-boot. 314470c219cdSJoe Hershberger 314570c219cdSJoe Hershberger Requires UBI support as well as CONFIG_LZO 314670c219cdSJoe Hershberger 3147147162daSJoe Hershberger CONFIG_UBIFS_SILENCE_MSG 3148147162daSJoe Hershberger 3149147162daSJoe Hershberger Make the verbose messages from UBIFS stop printing. This leaves 3150147162daSJoe Hershberger warnings and errors enabled. 3151147162daSJoe Hershberger 31526a11cf48SDaniel Schwierzeck- SPL framework 31536a11cf48SDaniel Schwierzeck CONFIG_SPL 31546a11cf48SDaniel Schwierzeck Enable building of SPL globally. 31556a11cf48SDaniel Schwierzeck 315695579793STom Rini CONFIG_SPL_LDSCRIPT 315795579793STom Rini LDSCRIPT for linking the SPL binary. 315895579793STom Rini 31596ebc3461SAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT 31606ebc3461SAlbert ARIBAUD Maximum size in memory allocated to the SPL, BSS included. 31616ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual memory 31626ebc3461SAlbert ARIBAUD used by SPL from _start to __bss_end does not exceed it. 31638960af8bSAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE 31646ebc3461SAlbert ARIBAUD must not be both defined at the same time. 31656ebc3461SAlbert ARIBAUD 316695579793STom Rini CONFIG_SPL_MAX_SIZE 31676ebc3461SAlbert ARIBAUD Maximum size of the SPL image (text, data, rodata, and 31686ebc3461SAlbert ARIBAUD linker lists sections), BSS excluded. 31696ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual size does 31706ebc3461SAlbert ARIBAUD not exceed it. 317195579793STom Rini 31726a11cf48SDaniel Schwierzeck CONFIG_SPL_TEXT_BASE 31736a11cf48SDaniel Schwierzeck TEXT_BASE for linking the SPL binary. 31746a11cf48SDaniel Schwierzeck 317594a45bb1SScott Wood CONFIG_SPL_RELOC_TEXT_BASE 317694a45bb1SScott Wood Address to relocate to. If unspecified, this is equal to 317794a45bb1SScott Wood CONFIG_SPL_TEXT_BASE (i.e. no relocation is done). 317894a45bb1SScott Wood 317995579793STom Rini CONFIG_SPL_BSS_START_ADDR 318095579793STom Rini Link address for the BSS within the SPL binary. 318195579793STom Rini 318295579793STom Rini CONFIG_SPL_BSS_MAX_SIZE 31836ebc3461SAlbert ARIBAUD Maximum size in memory allocated to the SPL BSS. 31846ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual memory used 31856ebc3461SAlbert ARIBAUD by SPL from __bss_start to __bss_end does not exceed it. 31868960af8bSAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE 31876ebc3461SAlbert ARIBAUD must not be both defined at the same time. 318895579793STom Rini 318995579793STom Rini CONFIG_SPL_STACK 319095579793STom Rini Adress of the start of the stack SPL will use 319195579793STom Rini 319294a45bb1SScott Wood CONFIG_SPL_RELOC_STACK 319394a45bb1SScott Wood Adress of the start of the stack SPL will use after 319494a45bb1SScott Wood relocation. If unspecified, this is equal to 319594a45bb1SScott Wood CONFIG_SPL_STACK. 319694a45bb1SScott Wood 319795579793STom Rini CONFIG_SYS_SPL_MALLOC_START 319895579793STom Rini Starting address of the malloc pool used in SPL. 319995579793STom Rini 320095579793STom Rini CONFIG_SYS_SPL_MALLOC_SIZE 320195579793STom Rini The size of the malloc pool used in SPL. 32026a11cf48SDaniel Schwierzeck 320347f7bcaeSTom Rini CONFIG_SPL_FRAMEWORK 320447f7bcaeSTom Rini Enable the SPL framework under common/. This framework 320547f7bcaeSTom Rini supports MMC, NAND and YMODEM loading of U-Boot and NAND 320647f7bcaeSTom Rini NAND loading of the Linux Kernel. 320747f7bcaeSTom Rini 3208861a86f4STom Rini CONFIG_SPL_DISPLAY_PRINT 3209861a86f4STom Rini For ARM, enable an optional function to print more information 3210861a86f4STom Rini about the running system. 3211861a86f4STom Rini 32124b919725SScott Wood CONFIG_SPL_INIT_MINIMAL 32134b919725SScott Wood Arch init code should be built for a very small image 32144b919725SScott Wood 32156a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBCOMMON_SUPPORT 32166a11cf48SDaniel Schwierzeck Support for common/libcommon.o in SPL binary 32176a11cf48SDaniel Schwierzeck 32186a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBDISK_SUPPORT 32196a11cf48SDaniel Schwierzeck Support for disk/libdisk.o in SPL binary 32206a11cf48SDaniel Schwierzeck 32216a11cf48SDaniel Schwierzeck CONFIG_SPL_I2C_SUPPORT 32226a11cf48SDaniel Schwierzeck Support for drivers/i2c/libi2c.o in SPL binary 32236a11cf48SDaniel Schwierzeck 32246a11cf48SDaniel Schwierzeck CONFIG_SPL_GPIO_SUPPORT 32256a11cf48SDaniel Schwierzeck Support for drivers/gpio/libgpio.o in SPL binary 32266a11cf48SDaniel Schwierzeck 32276a11cf48SDaniel Schwierzeck CONFIG_SPL_MMC_SUPPORT 32286a11cf48SDaniel Schwierzeck Support for drivers/mmc/libmmc.o in SPL binary 32296a11cf48SDaniel Schwierzeck 323095579793STom Rini CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR, 323195579793STom Rini CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS, 323295579793STom Rini CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION 323395579793STom Rini Address, size and partition on the MMC to load U-Boot from 323495579793STom Rini when the MMC is being used in raw mode. 323595579793STom Rini 32362b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 32372b75b0adSPeter Korsgaard Sector to load kernel uImage from when MMC is being 32382b75b0adSPeter Korsgaard used in raw mode (for Falcon mode) 32392b75b0adSPeter Korsgaard 32402b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR, 32412b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS 32422b75b0adSPeter Korsgaard Sector and number of sectors to load kernel argument 32432b75b0adSPeter Korsgaard parameters from when MMC is being used in raw mode 32442b75b0adSPeter Korsgaard (for falcon mode) 32452b75b0adSPeter Korsgaard 324695579793STom Rini CONFIG_SPL_FAT_SUPPORT 324795579793STom Rini Support for fs/fat/libfat.o in SPL binary 324895579793STom Rini 324995579793STom Rini CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME 325095579793STom Rini Filename to read to load U-Boot when reading from FAT 325195579793STom Rini 32527ad2cc79SPeter Korsgaard CONFIG_SPL_FAT_LOAD_KERNEL_NAME 32537ad2cc79SPeter Korsgaard Filename to read to load kernel uImage when reading 32547ad2cc79SPeter Korsgaard from FAT (for Falcon mode) 32557ad2cc79SPeter Korsgaard 32567ad2cc79SPeter Korsgaard CONFIG_SPL_FAT_LOAD_ARGS_NAME 32577ad2cc79SPeter Korsgaard Filename to read to load kernel argument parameters 32587ad2cc79SPeter Korsgaard when reading from FAT (for Falcon mode) 32597ad2cc79SPeter Korsgaard 326006f60ae3SScott Wood CONFIG_SPL_MPC83XX_WAIT_FOR_NAND 326106f60ae3SScott Wood Set this for NAND SPL on PPC mpc83xx targets, so that 326206f60ae3SScott Wood start.S waits for the rest of the SPL to load before 326306f60ae3SScott Wood continuing (the hardware starts execution after just 326406f60ae3SScott Wood loading the first page rather than the full 4K). 326506f60ae3SScott Wood 32666f2f01b9SScott Wood CONFIG_SPL_NAND_BASE 32676f2f01b9SScott Wood Include nand_base.c in the SPL. Requires 32686f2f01b9SScott Wood CONFIG_SPL_NAND_DRIVERS. 32696f2f01b9SScott Wood 32706f2f01b9SScott Wood CONFIG_SPL_NAND_DRIVERS 32716f2f01b9SScott Wood SPL uses normal NAND drivers, not minimal drivers. 32726f2f01b9SScott Wood 32736f2f01b9SScott Wood CONFIG_SPL_NAND_ECC 32746f2f01b9SScott Wood Include standard software ECC in the SPL 32756f2f01b9SScott Wood 327695579793STom Rini CONFIG_SPL_NAND_SIMPLE 32777d4b7955SScott Wood Support for NAND boot using simple NAND drivers that 32787d4b7955SScott Wood expose the cmd_ctrl() interface. 327995579793STom Rini 3280bb0dc108SYing Zhang CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT 3281bb0dc108SYing Zhang Set for the SPL on PPC mpc8xxx targets, support for 32825614e71bSYork Sun drivers/ddr/fsl/libddr.o in SPL binary. 3283bb0dc108SYing Zhang 32847c8eea59SYing Zhang CONFIG_SPL_COMMON_INIT_DDR 32857c8eea59SYing Zhang Set for common ddr init with serial presence detect in 32867c8eea59SYing Zhang SPL binary. 32877c8eea59SYing Zhang 328895579793STom Rini CONFIG_SYS_NAND_5_ADDR_CYCLE, CONFIG_SYS_NAND_PAGE_COUNT, 328995579793STom Rini CONFIG_SYS_NAND_PAGE_SIZE, CONFIG_SYS_NAND_OOBSIZE, 329095579793STom Rini CONFIG_SYS_NAND_BLOCK_SIZE, CONFIG_SYS_NAND_BAD_BLOCK_POS, 329195579793STom Rini CONFIG_SYS_NAND_ECCPOS, CONFIG_SYS_NAND_ECCSIZE, 329295579793STom Rini CONFIG_SYS_NAND_ECCBYTES 329395579793STom Rini Defines the size and behavior of the NAND that SPL uses 32947d4b7955SScott Wood to read U-Boot 329595579793STom Rini 3296fbe76ae4SPrabhakar Kushwaha CONFIG_SPL_NAND_BOOT 3297fbe76ae4SPrabhakar Kushwaha Add support NAND boot 3298fbe76ae4SPrabhakar Kushwaha 329995579793STom Rini CONFIG_SYS_NAND_U_BOOT_OFFS 33007d4b7955SScott Wood Location in NAND to read U-Boot from 33017d4b7955SScott Wood 33027d4b7955SScott Wood CONFIG_SYS_NAND_U_BOOT_DST 33037d4b7955SScott Wood Location in memory to load U-Boot to 33047d4b7955SScott Wood 33057d4b7955SScott Wood CONFIG_SYS_NAND_U_BOOT_SIZE 33067d4b7955SScott Wood Size of image to load 330795579793STom Rini 330895579793STom Rini CONFIG_SYS_NAND_U_BOOT_START 33097d4b7955SScott Wood Entry point in loaded image to jump to 331095579793STom Rini 331195579793STom Rini CONFIG_SYS_NAND_HW_ECC_OOBFIRST 331295579793STom Rini Define this if you need to first read the OOB and then the 331395579793STom Rini data. This is used for example on davinci plattforms. 331495579793STom Rini 331595579793STom Rini CONFIG_SPL_OMAP3_ID_NAND 331695579793STom Rini Support for an OMAP3-specific set of functions to return the 331795579793STom Rini ID and MFR of the first attached NAND chip, if present. 331895579793STom Rini 33196a11cf48SDaniel Schwierzeck CONFIG_SPL_SERIAL_SUPPORT 33206a11cf48SDaniel Schwierzeck Support for drivers/serial/libserial.o in SPL binary 33216a11cf48SDaniel Schwierzeck 33226a11cf48SDaniel Schwierzeck CONFIG_SPL_SPI_FLASH_SUPPORT 33236a11cf48SDaniel Schwierzeck Support for drivers/mtd/spi/libspi_flash.o in SPL binary 33246a11cf48SDaniel Schwierzeck 33256a11cf48SDaniel Schwierzeck CONFIG_SPL_SPI_SUPPORT 33266a11cf48SDaniel Schwierzeck Support for drivers/spi/libspi.o in SPL binary 33276a11cf48SDaniel Schwierzeck 3328c57b953dSPavel Machek CONFIG_SPL_RAM_DEVICE 3329c57b953dSPavel Machek Support for running image already present in ram, in SPL binary 3330c57b953dSPavel Machek 33316a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBGENERIC_SUPPORT 33326a11cf48SDaniel Schwierzeck Support for lib/libgeneric.o in SPL binary 33331372cce2SMarian Balakowicz 3334ba1bee43SYing Zhang CONFIG_SPL_ENV_SUPPORT 3335ba1bee43SYing Zhang Support for the environment operating in SPL binary 3336ba1bee43SYing Zhang 3337ba1bee43SYing Zhang CONFIG_SPL_NET_SUPPORT 3338ba1bee43SYing Zhang Support for the net/libnet.o in SPL binary. 3339ba1bee43SYing Zhang It conflicts with SPL env from storage medium specified by 3340ba1bee43SYing Zhang CONFIG_ENV_IS_xxx but CONFIG_ENV_IS_NOWHERE 3341ba1bee43SYing Zhang 334274752baaSScott Wood CONFIG_SPL_PAD_TO 33436113d3f2SBenoît Thébaudeau Image offset to which the SPL should be padded before appending 33446113d3f2SBenoît Thébaudeau the SPL payload. By default, this is defined as 33456113d3f2SBenoît Thébaudeau CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined. 33466113d3f2SBenoît Thébaudeau CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL 33476113d3f2SBenoît Thébaudeau payload without any padding, or >= CONFIG_SPL_MAX_SIZE. 334874752baaSScott Wood 3349ca2fca22SScott Wood CONFIG_SPL_TARGET 3350ca2fca22SScott Wood Final target image containing SPL and payload. Some SPLs 3351ca2fca22SScott Wood use an arch-specific makefile fragment instead, for 3352ca2fca22SScott Wood example if more than one image needs to be produced. 3353ca2fca22SScott Wood 335487ebee39SSimon Glass CONFIG_FIT_SPL_PRINT 335587ebee39SSimon Glass Printing information about a FIT image adds quite a bit of 335687ebee39SSimon Glass code to SPL. So this is normally disabled in SPL. Use this 335787ebee39SSimon Glass option to re-enable it. This will affect the output of the 335887ebee39SSimon Glass bootm command when booting a FIT image. 335987ebee39SSimon Glass 33603aa29de0SYing Zhang- TPL framework 33613aa29de0SYing Zhang CONFIG_TPL 33623aa29de0SYing Zhang Enable building of TPL globally. 33633aa29de0SYing Zhang 33643aa29de0SYing Zhang CONFIG_TPL_PAD_TO 33653aa29de0SYing Zhang Image offset to which the TPL should be padded before appending 33663aa29de0SYing Zhang the TPL payload. By default, this is defined as 33673aa29de0SYing Zhang CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined. 33683aa29de0SYing Zhang CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL 33693aa29de0SYing Zhang payload without any padding, or >= CONFIG_SPL_MAX_SIZE. 33703aa29de0SYing Zhang 3371c609719bSwdenkModem Support: 3372c609719bSwdenk-------------- 3373c609719bSwdenk 3374566e5cf4SWolfgang Denk[so far only for SMDK2400 boards] 3375c609719bSwdenk 337611ccc33fSMarcel Ziswiler- Modem support enable: 3377c609719bSwdenk CONFIG_MODEM_SUPPORT 3378c609719bSwdenk 3379c609719bSwdenk- RTS/CTS Flow control enable: 3380c609719bSwdenk CONFIG_HWFLOW 3381c609719bSwdenk 3382c609719bSwdenk- Modem debug support: 3383c609719bSwdenk CONFIG_MODEM_SUPPORT_DEBUG 3384c609719bSwdenk 3385c609719bSwdenk Enables debugging stuff (char screen[1024], dbg()) 3386c609719bSwdenk for modem support. Useful only with BDI2000. 3387c609719bSwdenk 3388a8c7c708Swdenk- Interrupt support (PPC): 3389a8c7c708Swdenk 3390a8c7c708Swdenk There are common interrupt_init() and timer_interrupt() 3391a8c7c708Swdenk for all PPC archs. interrupt_init() calls interrupt_init_cpu() 339211ccc33fSMarcel Ziswiler for CPU specific initialization. interrupt_init_cpu() 3393a8c7c708Swdenk should set decrementer_count to appropriate value. If 339411ccc33fSMarcel Ziswiler CPU resets decrementer automatically after interrupt 3395a8c7c708Swdenk (ppc4xx) it should set decrementer_count to zero. 339611ccc33fSMarcel Ziswiler timer_interrupt() calls timer_interrupt_cpu() for CPU 3397a8c7c708Swdenk specific handling. If board has watchdog / status_led 3398a8c7c708Swdenk / other_activity_monitor it works automatically from 3399a8c7c708Swdenk general timer_interrupt(). 3400a8c7c708Swdenk 3401c609719bSwdenk- General: 3402c609719bSwdenk 3403c609719bSwdenk In the target system modem support is enabled when a 3404c609719bSwdenk specific key (key combination) is pressed during 3405c609719bSwdenk power-on. Otherwise U-Boot will boot normally 340611ccc33fSMarcel Ziswiler (autoboot). The key_pressed() function is called from 3407c609719bSwdenk board_init(). Currently key_pressed() is a dummy 3408c609719bSwdenk function, returning 1 and thus enabling modem 3409c609719bSwdenk initialization. 3410c609719bSwdenk 3411c609719bSwdenk If there are no modem init strings in the 3412c609719bSwdenk environment, U-Boot proceed to autoboot; the 3413c609719bSwdenk previous output (banner, info printfs) will be 341411ccc33fSMarcel Ziswiler suppressed, though. 3415c609719bSwdenk 3416c609719bSwdenk See also: doc/README.Modem 3417c609719bSwdenk 34189660e442SHelmut RaigerBoard initialization settings: 34199660e442SHelmut Raiger------------------------------ 34209660e442SHelmut Raiger 34219660e442SHelmut RaigerDuring Initialization u-boot calls a number of board specific functions 34229660e442SHelmut Raigerto allow the preparation of board specific prerequisites, e.g. pin setup 34239660e442SHelmut Raigerbefore drivers are initialized. To enable these callbacks the 34249660e442SHelmut Raigerfollowing configuration macros have to be defined. Currently this is 34259660e442SHelmut Raigerarchitecture specific, so please check arch/your_architecture/lib/board.c 34269660e442SHelmut Raigertypically in board_init_f() and board_init_r(). 34279660e442SHelmut Raiger 34289660e442SHelmut Raiger- CONFIG_BOARD_EARLY_INIT_F: Call board_early_init_f() 34299660e442SHelmut Raiger- CONFIG_BOARD_EARLY_INIT_R: Call board_early_init_r() 34309660e442SHelmut Raiger- CONFIG_BOARD_LATE_INIT: Call board_late_init() 34319660e442SHelmut Raiger- CONFIG_BOARD_POSTCLK_INIT: Call board_postclk_init() 3432c609719bSwdenk 3433c609719bSwdenkConfiguration Settings: 3434c609719bSwdenk----------------------- 3435c609719bSwdenk 34366d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_LONGHELP: Defined when you want long help messages included; 3437c609719bSwdenk undefine this when you're short of memory. 3438c609719bSwdenk 34392fb2604dSPeter Tyser- CONFIG_SYS_HELP_CMD_WIDTH: Defined when you want to override the default 34402fb2604dSPeter Tyser width of the commands listed in the 'help' command output. 34412fb2604dSPeter Tyser 34426d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PROMPT: This is what U-Boot prints on the console to 3443c609719bSwdenk prompt for user input. 3444c609719bSwdenk 34456d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CBSIZE: Buffer size for input from the Console 3446c609719bSwdenk 34476d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PBSIZE: Buffer size for Console output 3448c609719bSwdenk 34496d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAXARGS: max. Number of arguments accepted for monitor commands 3450c609719bSwdenk 34516d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BARGSIZE: Buffer size for Boot Arguments which are passed to 3452c609719bSwdenk the application (usually a Linux kernel) when it is 3453c609719bSwdenk booted 3454c609719bSwdenk 34556d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BAUDRATE_TABLE: 3456c609719bSwdenk List of legal baudrate settings for this board. 3457c609719bSwdenk 34586d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_INFO_QUIET 3459c609719bSwdenk Suppress display of console information at boot. 3460c609719bSwdenk 34616d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_IS_IN_ENV 3462c609719bSwdenk If the board specific function 3463c609719bSwdenk extern int overwrite_console (void); 3464c609719bSwdenk returns 1, the stdin, stderr and stdout are switched to the 3465c609719bSwdenk serial port, else the settings in the environment are used. 3466c609719bSwdenk 34676d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE 3468c609719bSwdenk Enable the call to overwrite_console(). 3469c609719bSwdenk 34706d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_ENV_OVERWRITE 3471c609719bSwdenk Enable overwrite of previous console environment settings. 3472c609719bSwdenk 34736d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEMTEST_START, CONFIG_SYS_MEMTEST_END: 3474c609719bSwdenk Begin and End addresses of the area used by the 3475c609719bSwdenk simple memory test. 3476c609719bSwdenk 34776d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_ALT_MEMTEST: 3478c609719bSwdenk Enable an alternate, more extensive memory test. 3479c609719bSwdenk 34806d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEMTEST_SCRATCH: 34815f535fe1Swdenk Scratch address used by the alternate memory test 34825f535fe1Swdenk You only need to set this if address zero isn't writeable 34835f535fe1Swdenk 34846d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEM_TOP_HIDE (PPC only): 34856d0f6bcfSJean-Christophe PLAGNIOL-VILLARD If CONFIG_SYS_MEM_TOP_HIDE is defined in the board config header, 348614f73ca6SStefan Roese this specified memory area will get subtracted from the top 348711ccc33fSMarcel Ziswiler (end) of RAM and won't get "touched" at all by U-Boot. By 348814f73ca6SStefan Roese fixing up gd->ram_size the Linux kernel should gets passed 348914f73ca6SStefan Roese the now "corrected" memory size and won't touch it either. 349014f73ca6SStefan Roese This should work for arch/ppc and arch/powerpc. Only Linux 34915e12e75dSStefan Roese board ports in arch/powerpc with bootwrapper support that 349214f73ca6SStefan Roese recalculate the memory size from the SDRAM controller setup 34935e12e75dSStefan Roese will have to get fixed in Linux additionally. 349414f73ca6SStefan Roese 349514f73ca6SStefan Roese This option can be used as a workaround for the 440EPx/GRx 349614f73ca6SStefan Roese CHIP 11 errata where the last 256 bytes in SDRAM shouldn't 349714f73ca6SStefan Roese be touched. 349814f73ca6SStefan Roese 349914f73ca6SStefan Roese WARNING: Please make sure that this value is a multiple of 350014f73ca6SStefan Roese the Linux page size (normally 4k). If this is not the case, 350114f73ca6SStefan Roese then the end address of the Linux memory will be located at a 350214f73ca6SStefan Roese non page size aligned address and this could cause major 350314f73ca6SStefan Roese problems. 350414f73ca6SStefan Roese 35056d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_LOADS_BAUD_CHANGE: 3506c609719bSwdenk Enable temporary baudrate change while serial download 3507c609719bSwdenk 35086d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SDRAM_BASE: 3509c609719bSwdenk Physical start address of SDRAM. _Must_ be 0 here. 3510c609719bSwdenk 35116d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MBIO_BASE: 3512c609719bSwdenk Physical start address of Motherboard I/O (if using a 3513c609719bSwdenk Cogent motherboard) 3514c609719bSwdenk 35156d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_BASE: 3516c609719bSwdenk Physical start address of Flash memory. 3517c609719bSwdenk 35186d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MONITOR_BASE: 3519c609719bSwdenk Physical start address of boot monitor code (set by 3520c609719bSwdenk make config files to be same as the text base address 352114d0a02aSWolfgang Denk (CONFIG_SYS_TEXT_BASE) used when linking) - same as 35226d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FLASH_BASE when booting from flash. 3523c609719bSwdenk 35246d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MONITOR_LEN: 35253b57fe0aSwdenk Size of memory reserved for monitor code, used to 35263b57fe0aSwdenk determine _at_compile_time_ (!) if the environment is 35273b57fe0aSwdenk embedded within the U-Boot image, or in a separate 35283b57fe0aSwdenk flash sector. 3529c609719bSwdenk 35306d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MALLOC_LEN: 3531c609719bSwdenk Size of DRAM reserved for malloc() use. 3532c609719bSwdenk 35336d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BOOTM_LEN: 353415940c9aSStefan Roese Normally compressed uImages are limited to an 353515940c9aSStefan Roese uncompressed size of 8 MBytes. If this is not enough, 35366d0f6bcfSJean-Christophe PLAGNIOL-VILLARD you can define CONFIG_SYS_BOOTM_LEN in your board config file 353715940c9aSStefan Roese to adjust this setting to your needs. 3538c609719bSwdenk 35396d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BOOTMAPSZ: 3540c609719bSwdenk Maximum size of memory mapped by the startup code of 3541c609719bSwdenk the Linux kernel; all data that must be processed by 35427d721e34SBartlomiej Sieka the Linux kernel (bd_info, boot arguments, FDT blob if 35437d721e34SBartlomiej Sieka used) must be put below this limit, unless "bootm_low" 35441bce2aebSRobert P. J. Day environment variable is defined and non-zero. In such case 35457d721e34SBartlomiej Sieka all data for the Linux kernel must be between "bootm_low" 3546c3624e6eSGrant Likely and "bootm_low" + CONFIG_SYS_BOOTMAPSZ. The environment 3547c3624e6eSGrant Likely variable "bootm_mapsize" will override the value of 3548c3624e6eSGrant Likely CONFIG_SYS_BOOTMAPSZ. If CONFIG_SYS_BOOTMAPSZ is undefined, 3549c3624e6eSGrant Likely then the value in "bootm_size" will be used instead. 3550c609719bSwdenk 3551fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_RAMDISK_HIGH: 3552fca43cc8SJohn Rigby Enable initrd_high functionality. If defined then the 3553fca43cc8SJohn Rigby initrd_high feature is enabled and the bootm ramdisk subcommand 3554fca43cc8SJohn Rigby is enabled. 3555fca43cc8SJohn Rigby 3556fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_GET_CMDLINE: 3557fca43cc8SJohn Rigby Enables allocating and saving kernel cmdline in space between 3558fca43cc8SJohn Rigby "bootm_low" and "bootm_low" + BOOTMAPSZ. 3559fca43cc8SJohn Rigby 3560fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_GET_KBD: 3561fca43cc8SJohn Rigby Enables allocating and saving a kernel copy of the bd_info in 3562fca43cc8SJohn Rigby space between "bootm_low" and "bootm_low" + BOOTMAPSZ. 3563fca43cc8SJohn Rigby 35646d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAX_FLASH_BANKS: 3565c609719bSwdenk Max number of Flash memory banks 3566c609719bSwdenk 35676d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAX_FLASH_SECT: 3568c609719bSwdenk Max number of sectors on a Flash chip 3569c609719bSwdenk 35706d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_ERASE_TOUT: 3571c609719bSwdenk Timeout for Flash erase operations (in ms) 3572c609719bSwdenk 35736d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_WRITE_TOUT: 3574c609719bSwdenk Timeout for Flash write operations (in ms) 3575c609719bSwdenk 35766d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_LOCK_TOUT 35778564acf9Swdenk Timeout for Flash set sector lock bit operation (in ms) 35788564acf9Swdenk 35796d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_UNLOCK_TOUT 35808564acf9Swdenk Timeout for Flash clear lock bits operation (in ms) 35818564acf9Swdenk 35826d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_PROTECTION 35838564acf9Swdenk If defined, hardware flash sectors protection is used 35848564acf9Swdenk instead of U-Boot software protection. 35858564acf9Swdenk 35866d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DIRECT_FLASH_TFTP: 3587c609719bSwdenk 3588c609719bSwdenk Enable TFTP transfers directly to flash memory; 3589c609719bSwdenk without this option such a download has to be 3590c609719bSwdenk performed in two steps: (1) download to RAM, and (2) 3591c609719bSwdenk copy from RAM to flash. 3592c609719bSwdenk 3593c609719bSwdenk The two-step approach is usually more reliable, since 3594c609719bSwdenk you can check if the download worked before you erase 359511ccc33fSMarcel Ziswiler the flash, but in some situations (when system RAM is 359611ccc33fSMarcel Ziswiler too limited to allow for a temporary copy of the 3597c609719bSwdenk downloaded image) this option may be very useful. 3598c609719bSwdenk 35996d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_CFI: 3600c609719bSwdenk Define if the flash driver uses extra elements in the 36015653fc33Swdenk common flash structure for storing flash geometry. 36025653fc33Swdenk 360300b1883aSJean-Christophe PLAGNIOL-VILLARD- CONFIG_FLASH_CFI_DRIVER 36045653fc33Swdenk This option also enables the building of the cfi_flash driver 36055653fc33Swdenk in the drivers directory 360653cf9435Sstroese 360791809ed5SPiotr Ziecik- CONFIG_FLASH_CFI_MTD 360891809ed5SPiotr Ziecik This option enables the building of the cfi_mtd driver 360991809ed5SPiotr Ziecik in the drivers directory. The driver exports CFI flash 361091809ed5SPiotr Ziecik to the MTD layer. 361191809ed5SPiotr Ziecik 36126d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_USE_BUFFER_WRITE 361396ef831fSGuennadi Liakhovetski Use buffered writes to flash. 361496ef831fSGuennadi Liakhovetski 361596ef831fSGuennadi Liakhovetski- CONFIG_FLASH_SPANSION_S29WS_N 361696ef831fSGuennadi Liakhovetski s29ws-n MirrorBit flash has non-standard addresses for buffered 361796ef831fSGuennadi Liakhovetski write commands. 361896ef831fSGuennadi Liakhovetski 36196d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_QUIET_TEST 36205568e613SStefan Roese If this option is defined, the common CFI flash doesn't 36215568e613SStefan Roese print it's warning upon not recognized FLASH banks. This 36225568e613SStefan Roese is useful, if some of the configured banks are only 36235568e613SStefan Roese optionally available. 36245568e613SStefan Roese 36259a042e9cSJerry Van Baren- CONFIG_FLASH_SHOW_PROGRESS 36269a042e9cSJerry Van Baren If defined (must be an integer), print out countdown 36279a042e9cSJerry Van Baren digits and dots. Recommended value: 45 (9..1) for 80 36289a042e9cSJerry Van Baren column displays, 15 (3..1) for 40 column displays. 36299a042e9cSJerry Van Baren 3630352ef3f1SStefan Roese- CONFIG_FLASH_VERIFY 3631352ef3f1SStefan Roese If defined, the content of the flash (destination) is compared 3632352ef3f1SStefan Roese against the source after the write operation. An error message 3633352ef3f1SStefan Roese will be printed when the contents are not identical. 3634352ef3f1SStefan Roese Please note that this option is useless in nearly all cases, 3635352ef3f1SStefan Roese since such flash programming errors usually are detected earlier 3636352ef3f1SStefan Roese while unprotecting/erasing/programming. Please only enable 3637352ef3f1SStefan Roese this option if you really know what you are doing. 3638352ef3f1SStefan Roese 36396d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_RX_ETH_BUFFER: 364011ccc33fSMarcel Ziswiler Defines the number of Ethernet receive buffers. On some 364111ccc33fSMarcel Ziswiler Ethernet controllers it is recommended to set this value 364253cf9435Sstroese to 8 or even higher (EEPRO100 or 405 EMAC), since all 364353cf9435Sstroese buffers can be full shortly after enabling the interface 364411ccc33fSMarcel Ziswiler on high Ethernet traffic. 364553cf9435Sstroese Defaults to 4 if not defined. 3646c609719bSwdenk 3647ea882bafSWolfgang Denk- CONFIG_ENV_MAX_ENTRIES 3648ea882bafSWolfgang Denk 3649ea882bafSWolfgang Denk Maximum number of entries in the hash table that is used 3650ea882bafSWolfgang Denk internally to store the environment settings. The default 3651ea882bafSWolfgang Denk setting is supposed to be generous and should work in most 3652ea882bafSWolfgang Denk cases. This setting can be used to tune behaviour; see 3653ea882bafSWolfgang Denk lib/hashtable.c for details. 3654ea882bafSWolfgang Denk 36552598090bSJoe Hershberger- CONFIG_ENV_FLAGS_LIST_DEFAULT 36562598090bSJoe Hershberger- CONFIG_ENV_FLAGS_LIST_STATIC 36571bce2aebSRobert P. J. Day Enable validation of the values given to environment variables when 36582598090bSJoe Hershberger calling env set. Variables can be restricted to only decimal, 36592598090bSJoe Hershberger hexadecimal, or boolean. If CONFIG_CMD_NET is also defined, 36602598090bSJoe Hershberger the variables can also be restricted to IP address or MAC address. 36612598090bSJoe Hershberger 36622598090bSJoe Hershberger The format of the list is: 36632598090bSJoe Hershberger type_attribute = [s|d|x|b|i|m] 3664267541f7SJoe Hershberger access_atribute = [a|r|o|c] 3665267541f7SJoe Hershberger attributes = type_attribute[access_atribute] 36662598090bSJoe Hershberger entry = variable_name[:attributes] 36672598090bSJoe Hershberger list = entry[,list] 36682598090bSJoe Hershberger 36692598090bSJoe Hershberger The type attributes are: 36702598090bSJoe Hershberger s - String (default) 36712598090bSJoe Hershberger d - Decimal 36722598090bSJoe Hershberger x - Hexadecimal 36732598090bSJoe Hershberger b - Boolean ([1yYtT|0nNfF]) 36742598090bSJoe Hershberger i - IP address 36752598090bSJoe Hershberger m - MAC address 36762598090bSJoe Hershberger 3677267541f7SJoe Hershberger The access attributes are: 3678267541f7SJoe Hershberger a - Any (default) 3679267541f7SJoe Hershberger r - Read-only 3680267541f7SJoe Hershberger o - Write-once 3681267541f7SJoe Hershberger c - Change-default 3682267541f7SJoe Hershberger 36832598090bSJoe Hershberger - CONFIG_ENV_FLAGS_LIST_DEFAULT 36842598090bSJoe Hershberger Define this to a list (string) to define the ".flags" 36852598090bSJoe Hershberger envirnoment variable in the default or embedded environment. 36862598090bSJoe Hershberger 36872598090bSJoe Hershberger - CONFIG_ENV_FLAGS_LIST_STATIC 36882598090bSJoe Hershberger Define this to a list (string) to define validation that 36892598090bSJoe Hershberger should be done if an entry is not found in the ".flags" 36902598090bSJoe Hershberger environment variable. To override a setting in the static 36912598090bSJoe Hershberger list, simply add an entry for the same variable name to the 36922598090bSJoe Hershberger ".flags" variable. 36932598090bSJoe Hershberger 3694267541f7SJoe Hershberger- CONFIG_ENV_ACCESS_IGNORE_FORCE 3695267541f7SJoe Hershberger If defined, don't allow the -f switch to env set override variable 3696267541f7SJoe Hershberger access flags. 3697267541f7SJoe Hershberger 36985c1a7ea6SSimon Glass- CONFIG_SYS_GENERIC_BOARD 36995c1a7ea6SSimon Glass This selects the architecture-generic board system instead of the 37005c1a7ea6SSimon Glass architecture-specific board files. It is intended to move boards 37015c1a7ea6SSimon Glass to this new framework over time. Defining this will disable the 37025c1a7ea6SSimon Glass arch/foo/lib/board.c file and use common/board_f.c and 37035c1a7ea6SSimon Glass common/board_r.c instead. To use this option your architecture 37045c1a7ea6SSimon Glass must support it (i.e. must define __HAVE_ARCH_GENERIC_BOARD in 37055c1a7ea6SSimon Glass its config.mk file). If you find problems enabling this option on 37065c1a7ea6SSimon Glass your board please report the problem and send patches! 37075c1a7ea6SSimon Glass 3708632efa74SSimon Glass- CONFIG_SYS_SYM_OFFSETS 3709632efa74SSimon Glass This is set by architectures that use offsets for link symbols 3710632efa74SSimon Glass instead of absolute values. So bss_start is obtained using an 3711632efa74SSimon Glass offset _bss_start_ofs from CONFIG_SYS_TEXT_BASE, rather than 3712632efa74SSimon Glass directly. You should not need to touch this setting. 3713632efa74SSimon Glass 37140b1b60c7SLokesh Vutla- CONFIG_OMAP_PLATFORM_RESET_TIME_MAX_USEC (OMAP only) 37150b1b60c7SLokesh Vutla This is set by OMAP boards for the max time that reset should 37160b1b60c7SLokesh Vutla be asserted. See doc/README.omap-reset-time for details on how 37170b1b60c7SLokesh Vutla the value can be calulated on a given board. 3718632efa74SSimon Glass 3719c609719bSwdenkThe following definitions that deal with the placement and management 3720c609719bSwdenkof environment data (variable area); in general, we support the 3721c609719bSwdenkfollowing configurations: 3722c609719bSwdenk 3723c3eb3fe4SMike Frysinger- CONFIG_BUILD_ENVCRC: 3724c3eb3fe4SMike Frysinger 3725c3eb3fe4SMike Frysinger Builds up envcrc with the target environment so that external utils 3726c3eb3fe4SMike Frysinger may easily extract it and embed it in final U-Boot images. 3727c3eb3fe4SMike Frysinger 37285a1aceb0SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_FLASH: 3729c609719bSwdenk 3730c609719bSwdenk Define this if the environment is in flash memory. 3731c609719bSwdenk 3732c609719bSwdenk a) The environment occupies one whole flash sector, which is 3733c609719bSwdenk "embedded" in the text segment with the U-Boot code. This 3734c609719bSwdenk happens usually with "bottom boot sector" or "top boot 3735c609719bSwdenk sector" type flash chips, which have several smaller 3736c609719bSwdenk sectors at the start or the end. For instance, such a 3737c609719bSwdenk layout can have sector sizes of 8, 2x4, 16, Nx32 kB. In 3738c609719bSwdenk such a case you would place the environment in one of the 3739c609719bSwdenk 4 kB sectors - with U-Boot code before and after it. With 3740c609719bSwdenk "top boot sector" type flash chips, you would put the 3741c609719bSwdenk environment in one of the last sectors, leaving a gap 3742c609719bSwdenk between U-Boot and the environment. 3743c609719bSwdenk 37440e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 3745c609719bSwdenk 3746c609719bSwdenk Offset of environment data (variable area) to the 3747c609719bSwdenk beginning of flash memory; for instance, with bottom boot 3748c609719bSwdenk type flash chips the second sector can be used: the offset 3749c609719bSwdenk for this sector is given here. 3750c609719bSwdenk 37516d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_OFFSET is used relative to CONFIG_SYS_FLASH_BASE. 3752c609719bSwdenk 37530e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 3754c609719bSwdenk 3755c609719bSwdenk This is just another way to specify the start address of 3756c609719bSwdenk the flash sector containing the environment (instead of 37570e8d1586SJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_OFFSET). 3758c609719bSwdenk 37590e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SECT_SIZE: 3760c609719bSwdenk 3761c609719bSwdenk Size of the sector containing the environment. 3762c609719bSwdenk 3763c609719bSwdenk 3764c609719bSwdenk b) Sometimes flash chips have few, equal sized, BIG sectors. 3765c609719bSwdenk In such a case you don't want to spend a whole sector for 3766c609719bSwdenk the environment. 3767c609719bSwdenk 37680e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 3769c609719bSwdenk 37705a1aceb0SJean-Christophe PLAGNIOL-VILLARD If you use this in combination with CONFIG_ENV_IS_IN_FLASH 37710e8d1586SJean-Christophe PLAGNIOL-VILLARD and CONFIG_ENV_SECT_SIZE, you can specify to use only a part 3772c609719bSwdenk of this flash sector for the environment. This saves 3773c609719bSwdenk memory for the RAM copy of the environment. 3774c609719bSwdenk 3775c609719bSwdenk It may also save flash memory if you decide to use this 3776c609719bSwdenk when your environment is "embedded" within U-Boot code, 3777c609719bSwdenk since then the remainder of the flash sector could be used 3778c609719bSwdenk for U-Boot code. It should be pointed out that this is 3779c609719bSwdenk STRONGLY DISCOURAGED from a robustness point of view: 3780c609719bSwdenk updating the environment in flash makes it always 3781c609719bSwdenk necessary to erase the WHOLE sector. If something goes 3782c609719bSwdenk wrong before the contents has been restored from a copy in 3783c609719bSwdenk RAM, your target system will be dead. 3784c609719bSwdenk 37850e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR_REDUND 37860e8d1586SJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_SIZE_REDUND 3787c609719bSwdenk 3788c609719bSwdenk These settings describe a second storage area used to hold 378911ccc33fSMarcel Ziswiler a redundant copy of the environment data, so that there is 37903e38691eSwdenk a valid backup copy in case there is a power failure during 3791c609719bSwdenk a "saveenv" operation. 3792c609719bSwdenk 3793c609719bSwdenkBE CAREFUL! Any changes to the flash layout, and some changes to the 3794c609719bSwdenksource code will make it necessary to adapt <board>/u-boot.lds* 3795c609719bSwdenkaccordingly! 3796c609719bSwdenk 3797c609719bSwdenk 37989314cee6SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_NVRAM: 3799c609719bSwdenk 3800c609719bSwdenk Define this if you have some non-volatile memory device 3801c609719bSwdenk (NVRAM, battery buffered SRAM) which you want to use for the 3802c609719bSwdenk environment. 3803c609719bSwdenk 38040e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 38050e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 3806c609719bSwdenk 380711ccc33fSMarcel Ziswiler These two #defines are used to determine the memory area you 3808c609719bSwdenk want to use for environment. It is assumed that this memory 3809c609719bSwdenk can just be read and written to, without any special 3810c609719bSwdenk provision. 3811c609719bSwdenk 3812c609719bSwdenkBE CAREFUL! The first access to the environment happens quite early 3813c609719bSwdenkin U-Boot initalization (when we try to get the setting of for the 381411ccc33fSMarcel Ziswilerconsole baudrate). You *MUST* have mapped your NVRAM area then, or 3815c609719bSwdenkU-Boot will hang. 3816c609719bSwdenk 3817c609719bSwdenkPlease note that even with NVRAM we still use a copy of the 3818c609719bSwdenkenvironment in RAM: we could work on NVRAM directly, but we want to 3819c609719bSwdenkkeep settings there always unmodified except somebody uses "saveenv" 3820c609719bSwdenkto save the current settings. 3821c609719bSwdenk 3822c609719bSwdenk 3823bb1f8b4fSJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_EEPROM: 3824c609719bSwdenk 3825c609719bSwdenk Use this if you have an EEPROM or similar serial access 3826c609719bSwdenk device and a driver for it. 3827c609719bSwdenk 38280e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 38290e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 3830c609719bSwdenk 3831c609719bSwdenk These two #defines specify the offset and size of the 3832c609719bSwdenk environment area within the total memory of your EEPROM. 3833c609719bSwdenk 38346d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR: 3835c609719bSwdenk If defined, specified the chip address of the EEPROM device. 3836c609719bSwdenk The default address is zero. 3837c609719bSwdenk 38386d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_PAGE_WRITE_BITS: 3839c609719bSwdenk If defined, the number of bits used to address bytes in a 3840c609719bSwdenk single page in the EEPROM device. A 64 byte page, for example 3841c609719bSwdenk would require six bits. 3842c609719bSwdenk 38436d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS: 3844c609719bSwdenk If defined, the number of milliseconds to delay between 3845c609719bSwdenk page writes. The default is zero milliseconds. 3846c609719bSwdenk 38476d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR_LEN: 3848c609719bSwdenk The length in bytes of the EEPROM memory array address. Note 3849c609719bSwdenk that this is NOT the chip address length! 3850c609719bSwdenk 38516d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW: 38525cf91d6bSwdenk EEPROM chips that implement "address overflow" are ones 38535cf91d6bSwdenk like Catalyst 24WC04/08/16 which has 9/10/11 bits of 38545cf91d6bSwdenk address and the extra bits end up in the "chip address" bit 38555cf91d6bSwdenk slots. This makes a 24WC08 (1Kbyte) chip look like four 256 38565cf91d6bSwdenk byte chips. 38575cf91d6bSwdenk 38585cf91d6bSwdenk Note that we consider the length of the address field to 38595cf91d6bSwdenk still be one byte because the extra address bits are hidden 38605cf91d6bSwdenk in the chip address. 38615cf91d6bSwdenk 38626d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_SIZE: 3863c609719bSwdenk The size in bytes of the EEPROM device. 3864c609719bSwdenk 3865548738b4SHeiko Schocher - CONFIG_ENV_EEPROM_IS_ON_I2C 3866548738b4SHeiko Schocher define this, if you have I2C and SPI activated, and your 3867548738b4SHeiko Schocher EEPROM, which holds the environment, is on the I2C bus. 3868548738b4SHeiko Schocher 3869548738b4SHeiko Schocher - CONFIG_I2C_ENV_EEPROM_BUS 3870548738b4SHeiko Schocher if you have an Environment on an EEPROM reached over 3871548738b4SHeiko Schocher I2C muxes, you can define here, how to reach this 3872548738b4SHeiko Schocher EEPROM. For example: 3873548738b4SHeiko Schocher 3874ea818dbbSHeiko Schocher #define CONFIG_I2C_ENV_EEPROM_BUS 1 3875548738b4SHeiko Schocher 3876548738b4SHeiko Schocher EEPROM which holds the environment, is reached over 3877548738b4SHeiko Schocher a pca9547 i2c mux with address 0x70, channel 3. 3878c609719bSwdenk 3879057c849cSJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_DATAFLASH: 38805779d8d9Swdenk 38815779d8d9Swdenk Define this if you have a DataFlash memory device which you 38825779d8d9Swdenk want to use for the environment. 38835779d8d9Swdenk 38840e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 38850e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 38860e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 38875779d8d9Swdenk 38885779d8d9Swdenk These three #defines specify the offset and size of the 38895779d8d9Swdenk environment area within the total memory of your DataFlash placed 38905779d8d9Swdenk at the specified address. 38915779d8d9Swdenk 38920a85a9e7SLiu Gang- CONFIG_ENV_IS_IN_REMOTE: 38930a85a9e7SLiu Gang 38940a85a9e7SLiu Gang Define this if you have a remote memory space which you 38950a85a9e7SLiu Gang want to use for the local device's environment. 38960a85a9e7SLiu Gang 38970a85a9e7SLiu Gang - CONFIG_ENV_ADDR: 38980a85a9e7SLiu Gang - CONFIG_ENV_SIZE: 38990a85a9e7SLiu Gang 39000a85a9e7SLiu Gang These two #defines specify the address and size of the 39010a85a9e7SLiu Gang environment area within the remote memory space. The 39020a85a9e7SLiu Gang local device can get the environment from remote memory 3903fc54c7faSLiu Gang space by SRIO or PCIE links. 39040a85a9e7SLiu Gang 39050a85a9e7SLiu GangBE CAREFUL! For some special cases, the local device can not use 39060a85a9e7SLiu Gang"saveenv" command. For example, the local device will get the 3907fc54c7faSLiu Gangenvironment stored in a remote NOR flash by SRIO or PCIE link, 3908fc54c7faSLiu Gangbut it can not erase, write this NOR flash by SRIO or PCIE interface. 39090a85a9e7SLiu Gang 391051bfee19SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_NAND: 391113a5695bSwdenk 391213a5695bSwdenk Define this if you have a NAND device which you want to use 391313a5695bSwdenk for the environment. 391413a5695bSwdenk 39150e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 39160e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 391713a5695bSwdenk 391813a5695bSwdenk These two #defines specify the offset and size of the environment 3919fdd813deSScott Wood area within the first NAND device. CONFIG_ENV_OFFSET must be 3920fdd813deSScott Wood aligned to an erase block boundary. 39215779d8d9Swdenk 3922fdd813deSScott Wood - CONFIG_ENV_OFFSET_REDUND (optional): 3923e443c944SMarkus Klotzbuecher 39240e8d1586SJean-Christophe PLAGNIOL-VILLARD This setting describes a second storage area of CONFIG_ENV_SIZE 3925fdd813deSScott Wood size used to hold a redundant copy of the environment data, so 3926fdd813deSScott Wood that there is a valid backup copy in case there is a power failure 3927fdd813deSScott Wood during a "saveenv" operation. CONFIG_ENV_OFFSET_RENDUND must be 3928fdd813deSScott Wood aligned to an erase block boundary. 3929e443c944SMarkus Klotzbuecher 3930fdd813deSScott Wood - CONFIG_ENV_RANGE (optional): 3931fdd813deSScott Wood 3932fdd813deSScott Wood Specifies the length of the region in which the environment 3933fdd813deSScott Wood can be written. This should be a multiple of the NAND device's 3934fdd813deSScott Wood block size. Specifying a range with more erase blocks than 3935fdd813deSScott Wood are needed to hold CONFIG_ENV_SIZE allows bad blocks within 3936fdd813deSScott Wood the range to be avoided. 3937fdd813deSScott Wood 3938fdd813deSScott Wood - CONFIG_ENV_OFFSET_OOB (optional): 3939fdd813deSScott Wood 3940fdd813deSScott Wood Enables support for dynamically retrieving the offset of the 3941fdd813deSScott Wood environment from block zero's out-of-band data. The 3942fdd813deSScott Wood "nand env.oob" command can be used to record this offset. 3943fdd813deSScott Wood Currently, CONFIG_ENV_OFFSET_REDUND is not supported when 3944fdd813deSScott Wood using CONFIG_ENV_OFFSET_OOB. 3945e443c944SMarkus Klotzbuecher 3946b74ab737SGuennadi Liakhovetski- CONFIG_NAND_ENV_DST 3947b74ab737SGuennadi Liakhovetski 3948b74ab737SGuennadi Liakhovetski Defines address in RAM to which the nand_spl code should copy the 3949b74ab737SGuennadi Liakhovetski environment. If redundant environment is used, it will be copied to 3950b74ab737SGuennadi Liakhovetski CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE. 3951b74ab737SGuennadi Liakhovetski 39522b74433fSJoe Hershberger- CONFIG_ENV_IS_IN_UBI: 39532b74433fSJoe Hershberger 39542b74433fSJoe Hershberger Define this if you have an UBI volume that you want to use for the 39552b74433fSJoe Hershberger environment. This has the benefit of wear-leveling the environment 39562b74433fSJoe Hershberger accesses, which is important on NAND. 39572b74433fSJoe Hershberger 39582b74433fSJoe Hershberger - CONFIG_ENV_UBI_PART: 39592b74433fSJoe Hershberger 39602b74433fSJoe Hershberger Define this to a string that is the mtd partition containing the UBI. 39612b74433fSJoe Hershberger 39622b74433fSJoe Hershberger - CONFIG_ENV_UBI_VOLUME: 39632b74433fSJoe Hershberger 39642b74433fSJoe Hershberger Define this to the name of the volume that you want to store the 39652b74433fSJoe Hershberger environment in. 39662b74433fSJoe Hershberger 3967785881f7SJoe Hershberger - CONFIG_ENV_UBI_VOLUME_REDUND: 3968785881f7SJoe Hershberger 3969785881f7SJoe Hershberger Define this to the name of another volume to store a second copy of 3970785881f7SJoe Hershberger the environment in. This will enable redundant environments in UBI. 3971785881f7SJoe Hershberger It is assumed that both volumes are in the same MTD partition. 3972785881f7SJoe Hershberger 39732b74433fSJoe Hershberger - CONFIG_UBI_SILENCE_MSG 39742b74433fSJoe Hershberger - CONFIG_UBIFS_SILENCE_MSG 39752b74433fSJoe Hershberger 39762b74433fSJoe Hershberger You will probably want to define these to avoid a really noisy system 39772b74433fSJoe Hershberger when storing the env in UBI. 39782b74433fSJoe Hershberger 397906e4ae5fSStephen Warren- CONFIG_ENV_IS_IN_MMC: 398006e4ae5fSStephen Warren 398106e4ae5fSStephen Warren Define this if you have an MMC device which you want to use for the 398206e4ae5fSStephen Warren environment. 398306e4ae5fSStephen Warren 398406e4ae5fSStephen Warren - CONFIG_SYS_MMC_ENV_DEV: 398506e4ae5fSStephen Warren 398606e4ae5fSStephen Warren Specifies which MMC device the environment is stored in. 398706e4ae5fSStephen Warren 398806e4ae5fSStephen Warren - CONFIG_SYS_MMC_ENV_PART (optional): 398906e4ae5fSStephen Warren 399006e4ae5fSStephen Warren Specifies which MMC partition the environment is stored in. If not 399106e4ae5fSStephen Warren set, defaults to partition 0, the user area. Common values might be 399206e4ae5fSStephen Warren 1 (first MMC boot partition), 2 (second MMC boot partition). 399306e4ae5fSStephen Warren 399406e4ae5fSStephen Warren - CONFIG_ENV_OFFSET: 399506e4ae5fSStephen Warren - CONFIG_ENV_SIZE: 399606e4ae5fSStephen Warren 399706e4ae5fSStephen Warren These two #defines specify the offset and size of the environment 399806e4ae5fSStephen Warren area within the specified MMC device. 399906e4ae5fSStephen Warren 40005c088ee8SStephen Warren If offset is positive (the usual case), it is treated as relative to 40015c088ee8SStephen Warren the start of the MMC partition. If offset is negative, it is treated 40025c088ee8SStephen Warren as relative to the end of the MMC partition. This can be useful if 40035c088ee8SStephen Warren your board may be fitted with different MMC devices, which have 40045c088ee8SStephen Warren different sizes for the MMC partitions, and you always want the 40055c088ee8SStephen Warren environment placed at the very end of the partition, to leave the 40065c088ee8SStephen Warren maximum possible space before it, to store other data. 40075c088ee8SStephen Warren 400806e4ae5fSStephen Warren These two values are in units of bytes, but must be aligned to an 400906e4ae5fSStephen Warren MMC sector boundary. 401006e4ae5fSStephen Warren 401106e4ae5fSStephen Warren - CONFIG_ENV_OFFSET_REDUND (optional): 401206e4ae5fSStephen Warren 401306e4ae5fSStephen Warren Specifies a second storage area, of CONFIG_ENV_SIZE size, used to 401406e4ae5fSStephen Warren hold a redundant copy of the environment data. This provides a 401506e4ae5fSStephen Warren valid backup copy in case the other copy is corrupted, e.g. due 401606e4ae5fSStephen Warren to a power failure during a "saveenv" operation. 401706e4ae5fSStephen Warren 40185c088ee8SStephen Warren This value may also be positive or negative; this is handled in the 40195c088ee8SStephen Warren same way as CONFIG_ENV_OFFSET. 40205c088ee8SStephen Warren 402106e4ae5fSStephen Warren This value is also in units of bytes, but must also be aligned to 402206e4ae5fSStephen Warren an MMC sector boundary. 402306e4ae5fSStephen Warren 402406e4ae5fSStephen Warren - CONFIG_ENV_SIZE_REDUND (optional): 402506e4ae5fSStephen Warren 402606e4ae5fSStephen Warren This value need not be set, even when CONFIG_ENV_OFFSET_REDUND is 402706e4ae5fSStephen Warren set. If this value is set, it must be set to the same value as 402806e4ae5fSStephen Warren CONFIG_ENV_SIZE. 402906e4ae5fSStephen Warren 40306d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPI_INIT_OFFSET 4031c609719bSwdenk 4032c609719bSwdenk Defines offset to the initial SPI buffer area in DPRAM. The 4033c609719bSwdenk area is used at an early stage (ROM part) if the environment 4034c609719bSwdenk is configured to reside in the SPI EEPROM: We need a 520 byte 4035c609719bSwdenk scratch DPRAM area. It is used between the two initialization 4036c609719bSwdenk calls (spi_init_f() and spi_init_r()). A value of 0xB00 seems 4037c609719bSwdenk to be a good choice since it makes it far enough from the 4038c609719bSwdenk start of the data area as well as from the stack pointer. 4039c609719bSwdenk 4040e881cb56SBruce AdlerPlease note that the environment is read-only until the monitor 4041c609719bSwdenkhas been relocated to RAM and a RAM copy of the environment has been 4042cdb74977SWolfgang Denkcreated; also, when using EEPROM you will have to use getenv_f() 4043c609719bSwdenkuntil then to read environment variables. 4044c609719bSwdenk 404585ec0bccSwdenkThe environment is protected by a CRC32 checksum. Before the monitor 404685ec0bccSwdenkis relocated into RAM, as a result of a bad CRC you will be working 404785ec0bccSwdenkwith the compiled-in default environment - *silently*!!! [This is 404885ec0bccSwdenknecessary, because the first environment variable we need is the 404985ec0bccSwdenk"baudrate" setting for the console - if we have a bad CRC, we don't 405085ec0bccSwdenkhave any device yet where we could complain.] 4051c609719bSwdenk 4052c609719bSwdenkNote: once the monitor has been relocated, then it will complain if 4053c609719bSwdenkthe default environment is used; a new CRC is computed as soon as you 405485ec0bccSwdenkuse the "saveenv" command to store a valid environment. 4055c609719bSwdenk 40566d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FAULT_ECHO_LINK_DOWN: 4057fc3e2165Swdenk Echo the inverted Ethernet link state to the fault LED. 4058fc3e2165Swdenk 40596d0f6bcfSJean-Christophe PLAGNIOL-VILLARD Note: If this option is active, then CONFIG_SYS_FAULT_MII_ADDR 4060fc3e2165Swdenk also needs to be defined. 4061fc3e2165Swdenk 40626d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FAULT_MII_ADDR: 4063fc3e2165Swdenk MII address of the PHY to check for the Ethernet link state. 4064c609719bSwdenk 4065f5675aa5SRon Madrid- CONFIG_NS16550_MIN_FUNCTIONS: 4066f5675aa5SRon Madrid Define this if you desire to only have use of the NS16550_init 4067f5675aa5SRon Madrid and NS16550_putc functions for the serial driver located at 4068f5675aa5SRon Madrid drivers/serial/ns16550.c. This option is useful for saving 4069f5675aa5SRon Madrid space for already greatly restricted images, including but not 4070f5675aa5SRon Madrid limited to NAND_SPL configurations. 4071f5675aa5SRon Madrid 4072b2b92f53SSimon Glass- CONFIG_DISPLAY_BOARDINFO 4073b2b92f53SSimon Glass Display information about the board that U-Boot is running on 4074b2b92f53SSimon Glass when U-Boot starts up. The board function checkboard() is called 4075b2b92f53SSimon Glass to do this. 4076b2b92f53SSimon Glass 4077e2e3e2b1SSimon Glass- CONFIG_DISPLAY_BOARDINFO_LATE 4078e2e3e2b1SSimon Glass Similar to the previous option, but display this information 4079e2e3e2b1SSimon Glass later, once stdio is running and output goes to the LCD, if 4080e2e3e2b1SSimon Glass present. 4081e2e3e2b1SSimon Glass 4082c609719bSwdenkLow Level (hardware related) configuration options: 4083dc7c9a1aSwdenk--------------------------------------------------- 4084c609719bSwdenk 40856d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CACHELINE_SIZE: 4086c609719bSwdenk Cache Line Size of the CPU. 4087c609719bSwdenk 40886d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DEFAULT_IMMR: 4089c609719bSwdenk Default address of the IMMR after system reset. 40902535d602Swdenk 40912535d602Swdenk Needed on some 8260 systems (MPC8260ADS, PQ2FADS-ZU, 40922535d602Swdenk and RPXsuper) to be able to adjust the position of 40932535d602Swdenk the IMMR register after a reset. 4094c609719bSwdenk 4095e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_DEFAULT: 4096e46fedfeSTimur Tabi Default (power-on reset) physical address of CCSR on Freescale 4097e46fedfeSTimur Tabi PowerPC SOCs. 4098e46fedfeSTimur Tabi 4099e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR: 4100e46fedfeSTimur Tabi Virtual address of CCSR. On a 32-bit build, this is typically 4101e46fedfeSTimur Tabi the same value as CONFIG_SYS_CCSRBAR_DEFAULT. 4102e46fedfeSTimur Tabi 4103e46fedfeSTimur Tabi CONFIG_SYS_DEFAULT_IMMR must also be set to this value, 4104e46fedfeSTimur Tabi for cross-platform code that uses that macro instead. 4105e46fedfeSTimur Tabi 4106e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS: 4107e46fedfeSTimur Tabi Physical address of CCSR. CCSR can be relocated to a new 4108e46fedfeSTimur Tabi physical address, if desired. In this case, this macro should 4109e46fedfeSTimur Tabi be set to that address. Otherwise, it should be set to the 4110e46fedfeSTimur Tabi same value as CONFIG_SYS_CCSRBAR_DEFAULT. For example, CCSR 4111e46fedfeSTimur Tabi is typically relocated on 36-bit builds. It is recommended 4112e46fedfeSTimur Tabi that this macro be defined via the _HIGH and _LOW macros: 4113e46fedfeSTimur Tabi 4114e46fedfeSTimur Tabi #define CONFIG_SYS_CCSRBAR_PHYS ((CONFIG_SYS_CCSRBAR_PHYS_HIGH 4115e46fedfeSTimur Tabi * 1ull) << 32 | CONFIG_SYS_CCSRBAR_PHYS_LOW) 4116e46fedfeSTimur Tabi 4117e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS_HIGH: 4118e46fedfeSTimur Tabi Bits 33-36 of CONFIG_SYS_CCSRBAR_PHYS. This value is typically 4119e46fedfeSTimur Tabi either 0 (32-bit build) or 0xF (36-bit build). This macro is 4120e46fedfeSTimur Tabi used in assembly code, so it must not contain typecasts or 4121e46fedfeSTimur Tabi integer size suffixes (e.g. "ULL"). 4122e46fedfeSTimur Tabi 4123e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS_LOW: 4124e46fedfeSTimur Tabi Lower 32-bits of CONFIG_SYS_CCSRBAR_PHYS. This macro is 4125e46fedfeSTimur Tabi used in assembly code, so it must not contain typecasts or 4126e46fedfeSTimur Tabi integer size suffixes (e.g. "ULL"). 4127e46fedfeSTimur Tabi 4128e46fedfeSTimur Tabi- CONFIG_SYS_CCSR_DO_NOT_RELOCATE: 4129e46fedfeSTimur Tabi If this macro is defined, then CONFIG_SYS_CCSRBAR_PHYS will be 4130e46fedfeSTimur Tabi forced to a value that ensures that CCSR is not relocated. 4131e46fedfeSTimur Tabi 41327f6c2cbcSwdenk- Floppy Disk Support: 41336d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FDC_DRIVE_NUMBER 41347f6c2cbcSwdenk 41357f6c2cbcSwdenk the default drive number (default value 0) 41367f6c2cbcSwdenk 41376d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_ISA_IO_STRIDE 41387f6c2cbcSwdenk 413911ccc33fSMarcel Ziswiler defines the spacing between FDC chipset registers 41407f6c2cbcSwdenk (default value 1) 41417f6c2cbcSwdenk 41426d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_ISA_IO_OFFSET 41437f6c2cbcSwdenk 41447f6c2cbcSwdenk defines the offset of register from address. It 41457f6c2cbcSwdenk depends on which part of the data bus is connected to 414611ccc33fSMarcel Ziswiler the FDC chipset. (default value 0) 41477f6c2cbcSwdenk 41486d0f6bcfSJean-Christophe PLAGNIOL-VILLARD If CONFIG_SYS_ISA_IO_STRIDE CONFIG_SYS_ISA_IO_OFFSET and 41496d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FDC_DRIVE_NUMBER are undefined, they take their 41507f6c2cbcSwdenk default value. 41517f6c2cbcSwdenk 41526d0f6bcfSJean-Christophe PLAGNIOL-VILLARD if CONFIG_SYS_FDC_HW_INIT is defined, then the function 41537f6c2cbcSwdenk fdc_hw_init() is called at the beginning of the FDC 41547f6c2cbcSwdenk setup. fdc_hw_init() must be provided by the board 41557f6c2cbcSwdenk source code. It is used to make hardware dependant 41567f6c2cbcSwdenk initializations. 41577f6c2cbcSwdenk 41580abddf82SMacpaul Lin- CONFIG_IDE_AHB: 41590abddf82SMacpaul Lin Most IDE controllers were designed to be connected with PCI 41600abddf82SMacpaul Lin interface. Only few of them were designed for AHB interface. 41610abddf82SMacpaul Lin When software is doing ATA command and data transfer to 41620abddf82SMacpaul Lin IDE devices through IDE-AHB controller, some additional 41630abddf82SMacpaul Lin registers accessing to these kind of IDE-AHB controller 41640abddf82SMacpaul Lin is requierd. 41650abddf82SMacpaul Lin 41666d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_IMMR: Physical address of the Internal Memory. 416725d6712aSwdenk DO NOT CHANGE unless you know exactly what you're 416825d6712aSwdenk doing! (11-4) [MPC8xx/82xx systems only] 4169c609719bSwdenk 41706d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_INIT_RAM_ADDR: 4171c609719bSwdenk 41727152b1d0Swdenk Start address of memory area that can be used for 4173c609719bSwdenk initial data and stack; please note that this must be 4174c609719bSwdenk writable memory that is working WITHOUT special 4175c609719bSwdenk initialization, i. e. you CANNOT use normal RAM which 4176c609719bSwdenk will become available only after programming the 4177c609719bSwdenk memory controller and running certain initialization 4178c609719bSwdenk sequences. 4179c609719bSwdenk 4180c609719bSwdenk U-Boot uses the following memory types: 4181c609719bSwdenk - MPC8xx and MPC8260: IMMR (internal memory of the CPU) 4182c609719bSwdenk - MPC824X: data cache 4183c609719bSwdenk - PPC4xx: data cache 4184c609719bSwdenk 41856d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_GBL_DATA_OFFSET: 4186c609719bSwdenk 4187c609719bSwdenk Offset of the initial data structure in the memory 41886d0f6bcfSJean-Christophe PLAGNIOL-VILLARD area defined by CONFIG_SYS_INIT_RAM_ADDR. Usually 41896d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_GBL_DATA_OFFSET is chosen such that the initial 4190c609719bSwdenk data is located at the end of the available space 4191553f0982SWolfgang Denk (sometimes written as (CONFIG_SYS_INIT_RAM_SIZE - 41926d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_DATA_SIZE), and the initial stack is just 41936d0f6bcfSJean-Christophe PLAGNIOL-VILLARD below that area (growing from (CONFIG_SYS_INIT_RAM_ADDR + 41946d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_GBL_DATA_OFFSET) downward. 4195c609719bSwdenk 4196c609719bSwdenk Note: 4197c609719bSwdenk On the MPC824X (or other systems that use the data 4198c609719bSwdenk cache for initial memory) the address chosen for 41996d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_RAM_ADDR is basically arbitrary - it must 4200c609719bSwdenk point to an otherwise UNUSED address space between 4201c609719bSwdenk the top of RAM and the start of the PCI space. 4202c609719bSwdenk 42036d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SIUMCR: SIU Module Configuration (11-6) 4204c609719bSwdenk 42056d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SYPCR: System Protection Control (11-9) 4206c609719bSwdenk 42076d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_TBSCR: Time Base Status and Control (11-26) 4208c609719bSwdenk 42096d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PISCR: Periodic Interrupt Status and Control (11-31) 4210c609719bSwdenk 42116d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PLPRCR: PLL, Low-Power, and Reset Control Register (15-30) 4212c609719bSwdenk 42136d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SCCR: System Clock and reset Control Register (15-27) 4214c609719bSwdenk 42156d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_OR_TIMING_SDRAM: 4216c609719bSwdenk SDRAM timing 4217c609719bSwdenk 42186d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAMR_PTA: 4219c609719bSwdenk periodic timer for refresh 4220c609719bSwdenk 42216d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DER: Debug Event Register (37-47) 4222c609719bSwdenk 42236d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- FLASH_BASE0_PRELIM, FLASH_BASE1_PRELIM, CONFIG_SYS_REMAP_OR_AM, 42246d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PRELIM_OR_AM, CONFIG_SYS_OR_TIMING_FLASH, CONFIG_SYS_OR0_REMAP, 42256d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR0_PRELIM, CONFIG_SYS_BR0_PRELIM, CONFIG_SYS_OR1_REMAP, CONFIG_SYS_OR1_PRELIM, 42266d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BR1_PRELIM: 4227c609719bSwdenk Memory Controller Definitions: BR0/1 and OR0/1 (FLASH) 4228c609719bSwdenk 4229c609719bSwdenk- SDRAM_BASE2_PRELIM, SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE, 42306d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR_TIMING_SDRAM, CONFIG_SYS_OR2_PRELIM, CONFIG_SYS_BR2_PRELIM, 42316d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR3_PRELIM, CONFIG_SYS_BR3_PRELIM: 4232c609719bSwdenk Memory Controller Definitions: BR2/3 and OR2/3 (SDRAM) 4233c609719bSwdenk 42346d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAMR_PTA, CONFIG_SYS_MPTPR_2BK_4K, CONFIG_SYS_MPTPR_1BK_4K, CONFIG_SYS_MPTPR_2BK_8K, 42356d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MPTPR_1BK_8K, CONFIG_SYS_MAMR_8COL, CONFIG_SYS_MAMR_9COL: 4236c609719bSwdenk Machine Mode Register and Memory Periodic Timer 4237c609719bSwdenk Prescaler definitions (SDRAM timing) 4238c609719bSwdenk 42396d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_I2C_UCODE_PATCH, CONFIG_SYS_I2C_DPMEM_OFFSET [0x1FC0]: 4240c609719bSwdenk enable I2C microcode relocation patch (MPC8xx); 4241c609719bSwdenk define relocation offset in DPRAM [DSP2] 4242c609719bSwdenk 42436d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SMC_UCODE_PATCH, CONFIG_SYS_SMC_DPMEM_OFFSET [0x1FC0]: 4244b423d055SHeiko Schocher enable SMC microcode relocation patch (MPC8xx); 4245b423d055SHeiko Schocher define relocation offset in DPRAM [SMC1] 4246b423d055SHeiko Schocher 42476d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPI_UCODE_PATCH, CONFIG_SYS_SPI_DPMEM_OFFSET [0x1FC0]: 4248c609719bSwdenk enable SPI microcode relocation patch (MPC8xx); 4249c609719bSwdenk define relocation offset in DPRAM [SCC4] 4250c609719bSwdenk 42516d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_USE_OSCCLK: 4252c609719bSwdenk Use OSCM clock mode on MBX8xx board. Be careful, 4253c609719bSwdenk wrong setting might damage your board. Read 4254c609719bSwdenk doc/README.MBX before setting this variable! 4255c609719bSwdenk 42566d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CPM_POST_WORD_ADDR: (MPC8xx, MPC8260 only) 4257ea909b76Swdenk Offset of the bootmode word in DPRAM used by post 4258ea909b76Swdenk (Power On Self Tests). This definition overrides 4259ea909b76Swdenk #define'd default value in commproc.h resp. 4260ea909b76Swdenk cpm_8260.h. 4261ea909b76Swdenk 42626d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PCI_SLV_MEM_LOCAL, CONFIG_SYS_PCI_SLV_MEM_BUS, CONFIG_SYS_PICMR0_MASK_ATTRIB, 42636d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR0_LOCAL, CONFIG_SYS_PCIMSK0_MASK, CONFIG_SYS_PCI_MSTR1_LOCAL, 42646d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCIMSK1_MASK, CONFIG_SYS_PCI_MSTR_MEM_LOCAL, CONFIG_SYS_PCI_MSTR_MEM_BUS, 42656d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CPU_PCI_MEM_START, CONFIG_SYS_PCI_MSTR_MEM_SIZE, CONFIG_SYS_POCMR0_MASK_ATTRIB, 42666d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_MEMIO_LOCAL, CONFIG_SYS_PCI_MSTR_MEMIO_BUS, CPU_PCI_MEMIO_START, 42676d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_MEMIO_SIZE, CONFIG_SYS_POCMR1_MASK_ATTRIB, CONFIG_SYS_PCI_MSTR_IO_LOCAL, 42686d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_IO_BUS, CONFIG_SYS_CPU_PCI_IO_START, CONFIG_SYS_PCI_MSTR_IO_SIZE, 42696d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_POCMR2_MASK_ATTRIB: (MPC826x only) 4270a47a12beSStefan Roese Overrides the default PCI memory map in arch/powerpc/cpu/mpc8260/pci.c if set. 42715d232d0eSwdenk 42729cacf4fcSDirk Eibach- CONFIG_PCI_DISABLE_PCIE: 42739cacf4fcSDirk Eibach Disable PCI-Express on systems where it is supported but not 42749cacf4fcSDirk Eibach required. 42759cacf4fcSDirk Eibach 427669fd2d3bSAndrew Sharp- CONFIG_PCI_ENUM_ONLY 427769fd2d3bSAndrew Sharp Only scan through and get the devices on the busses. 427869fd2d3bSAndrew Sharp Don't do any setup work, presumably because someone or 427969fd2d3bSAndrew Sharp something has already done it, and we don't need to do it 428069fd2d3bSAndrew Sharp a second time. Useful for platforms that are pre-booted 428169fd2d3bSAndrew Sharp by coreboot or similar. 428269fd2d3bSAndrew Sharp 4283842033e6SGabor Juhos- CONFIG_PCI_INDIRECT_BRIDGE: 4284842033e6SGabor Juhos Enable support for indirect PCI bridges. 4285842033e6SGabor Juhos 4286a09b9b68SKumar Gala- CONFIG_SYS_SRIO: 4287a09b9b68SKumar Gala Chip has SRIO or not 4288a09b9b68SKumar Gala 4289a09b9b68SKumar Gala- CONFIG_SRIO1: 4290a09b9b68SKumar Gala Board has SRIO 1 port available 4291a09b9b68SKumar Gala 4292a09b9b68SKumar Gala- CONFIG_SRIO2: 4293a09b9b68SKumar Gala Board has SRIO 2 port available 4294a09b9b68SKumar Gala 4295c8b28152SLiu Gang- CONFIG_SRIO_PCIE_BOOT_MASTER 4296c8b28152SLiu Gang Board can support master function for Boot from SRIO and PCIE 4297c8b28152SLiu Gang 4298a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_VIRT: 4299a09b9b68SKumar Gala Virtual Address of SRIO port 'n' memory region 4300a09b9b68SKumar Gala 4301a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_PHYS: 4302a09b9b68SKumar Gala Physical Address of SRIO port 'n' memory region 4303a09b9b68SKumar Gala 4304a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_SIZE: 4305a09b9b68SKumar Gala Size of SRIO port 'n' memory region 4306a09b9b68SKumar Gala 430766bd1846SFabio Estevam- CONFIG_SYS_NAND_BUSWIDTH_16BIT 430866bd1846SFabio Estevam Defined to tell the NAND controller that the NAND chip is using 430966bd1846SFabio Estevam a 16 bit bus. 431066bd1846SFabio Estevam Not all NAND drivers use this symbol. 4311a430e916SFabio Estevam Example of drivers that use it: 431266bd1846SFabio Estevam - drivers/mtd/nand/ndfc.c 4313a430e916SFabio Estevam - drivers/mtd/nand/mxc_nand.c 4314eced4626SAlex Waterman 4315eced4626SAlex Waterman- CONFIG_SYS_NDFC_EBC0_CFG 4316eced4626SAlex Waterman Sets the EBC0_CFG register for the NDFC. If not defined 4317eced4626SAlex Waterman a default value will be used. 4318eced4626SAlex Waterman 4319bb99ad6dSBen Warren- CONFIG_SPD_EEPROM 4320218ca724SWolfgang Denk Get DDR timing information from an I2C EEPROM. Common 4321218ca724SWolfgang Denk with pluggable memory modules such as SODIMMs 4322218ca724SWolfgang Denk 4323bb99ad6dSBen Warren SPD_EEPROM_ADDRESS 4324bb99ad6dSBen Warren I2C address of the SPD EEPROM 4325bb99ad6dSBen Warren 43266d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPD_BUS_NUM 4327218ca724SWolfgang Denk If SPD EEPROM is on an I2C bus other than the first 4328218ca724SWolfgang Denk one, specify here. Note that the value must resolve 4329218ca724SWolfgang Denk to something your driver can deal with. 4330bb99ad6dSBen Warren 43311b3e3c4fSYork Sun- CONFIG_SYS_DDR_RAW_TIMING 43321b3e3c4fSYork Sun Get DDR timing information from other than SPD. Common with 43331b3e3c4fSYork Sun soldered DDR chips onboard without SPD. DDR raw timing 43341b3e3c4fSYork Sun parameters are extracted from datasheet and hard-coded into 43351b3e3c4fSYork Sun header files or board specific files. 43361b3e3c4fSYork Sun 43376f5e1dc5SYork Sun- CONFIG_FSL_DDR_INTERACTIVE 43386f5e1dc5SYork Sun Enable interactive DDR debugging. See doc/README.fsl-ddr. 43396f5e1dc5SYork Sun 43406d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_83XX_DDR_USES_CS0 4341218ca724SWolfgang Denk Only for 83xx systems. If specified, then DDR should 4342218ca724SWolfgang Denk be configured using CS0 and CS1 instead of CS2 and CS3. 43432ad6b513STimur Tabi 4344c26e454dSwdenk- CONFIG_ETHER_ON_FEC[12] 4345c26e454dSwdenk Define to enable FEC[12] on a 8xx series processor. 4346c26e454dSwdenk 4347c26e454dSwdenk- CONFIG_FEC[12]_PHY 4348c26e454dSwdenk Define to the hardcoded PHY address which corresponds 43496e592385Swdenk to the given FEC; i. e. 4350c26e454dSwdenk #define CONFIG_FEC1_PHY 4 4351c26e454dSwdenk means that the PHY with address 4 is connected to FEC1 4352c26e454dSwdenk 4353c26e454dSwdenk When set to -1, means to probe for first available. 4354c26e454dSwdenk 4355c26e454dSwdenk- CONFIG_FEC[12]_PHY_NORXERR 4356c26e454dSwdenk The PHY does not have a RXERR line (RMII only). 4357c26e454dSwdenk (so program the FEC to ignore it). 4358c26e454dSwdenk 4359c26e454dSwdenk- CONFIG_RMII 4360c26e454dSwdenk Enable RMII mode for all FECs. 4361c26e454dSwdenk Note that this is a global option, we can't 4362c26e454dSwdenk have one FEC in standard MII mode and another in RMII mode. 4363c26e454dSwdenk 43645cf91d6bSwdenk- CONFIG_CRC32_VERIFY 43655cf91d6bSwdenk Add a verify option to the crc32 command. 43665cf91d6bSwdenk The syntax is: 43675cf91d6bSwdenk 43685cf91d6bSwdenk => crc32 -v <address> <count> <crc32> 43695cf91d6bSwdenk 43705cf91d6bSwdenk Where address/count indicate a memory area 43715cf91d6bSwdenk and crc32 is the correct crc32 which the 43725cf91d6bSwdenk area should have. 43735cf91d6bSwdenk 437456523f12Swdenk- CONFIG_LOOPW 437556523f12Swdenk Add the "loopw" memory command. This only takes effect if 4376602ad3b3SJon Loeliger the memory commands are activated globally (CONFIG_CMD_MEM). 437756523f12Swdenk 43787b466641Sstroese- CONFIG_MX_CYCLIC 43797b466641Sstroese Add the "mdc" and "mwc" memory commands. These are cyclic 43807b466641Sstroese "md/mw" commands. 43817b466641Sstroese Examples: 43827b466641Sstroese 43837b466641Sstroese => mdc.b 10 4 500 43847b466641Sstroese This command will print 4 bytes (10,11,12,13) each 500 ms. 43857b466641Sstroese 43867b466641Sstroese => mwc.l 100 12345678 10 43877b466641Sstroese This command will write 12345678 to address 100 all 10 ms. 43887b466641Sstroese 43897b466641Sstroese This only takes effect if the memory commands are activated 4390602ad3b3SJon Loeliger globally (CONFIG_CMD_MEM). 43917b466641Sstroese 43928aa1a2d1Swdenk- CONFIG_SKIP_LOWLEVEL_INIT 4393afc1ce82SMacpaul Lin [ARM, NDS32, MIPS only] If this variable is defined, then certain 4394e03f3169SWolfgang Denk low level initializations (like setting up the memory 4395e03f3169SWolfgang Denk controller) are omitted and/or U-Boot does not 4396e03f3169SWolfgang Denk relocate itself into RAM. 43978aa1a2d1Swdenk 4398e03f3169SWolfgang Denk Normally this variable MUST NOT be defined. The only 4399e03f3169SWolfgang Denk exception is when U-Boot is loaded (to RAM) by some 4400e03f3169SWolfgang Denk other boot loader or by a debugger which performs 4401e03f3169SWolfgang Denk these initializations itself. 44028aa1a2d1Swdenk 4403401bb30bSAneesh V- CONFIG_SPL_BUILD 4404df81238bSMagnus Lilja Modifies the behaviour of start.S when compiling a loader 4405df81238bSMagnus Lilja that is executed before the actual U-Boot. E.g. when 4406df81238bSMagnus Lilja compiling a NAND SPL. 4407400558b5Swdenk 44083aa29de0SYing Zhang- CONFIG_TPL_BUILD 44093aa29de0SYing Zhang Modifies the behaviour of start.S when compiling a loader 44103aa29de0SYing Zhang that is executed after the SPL and before the actual U-Boot. 44113aa29de0SYing Zhang It is loaded by the SPL. 44123aa29de0SYing Zhang 44135df572f0SYing Zhang- CONFIG_SYS_MPC85XX_NO_RESETVEC 44145df572f0SYing Zhang Only for 85xx systems. If this variable is specified, the section 44155df572f0SYing Zhang .resetvec is not kept and the section .bootpg is placed in the 44165df572f0SYing Zhang previous 4k of the .text section. 44175df572f0SYing Zhang 44184213fc29SSimon Glass- CONFIG_ARCH_MAP_SYSMEM 44194213fc29SSimon Glass Generally U-Boot (and in particular the md command) uses 44204213fc29SSimon Glass effective address. It is therefore not necessary to regard 44214213fc29SSimon Glass U-Boot address as virtual addresses that need to be translated 44224213fc29SSimon Glass to physical addresses. However, sandbox requires this, since 44234213fc29SSimon Glass it maintains its own little RAM buffer which contains all 44244213fc29SSimon Glass addressable memory. This option causes some memory accesses 44254213fc29SSimon Glass to be mapped through map_sysmem() / unmap_sysmem(). 44264213fc29SSimon Glass 4427d8834a13SMatthias Weisser- CONFIG_USE_ARCH_MEMCPY 4428d8834a13SMatthias Weisser CONFIG_USE_ARCH_MEMSET 4429d8834a13SMatthias Weisser If these options are used a optimized version of memcpy/memset will 4430d8834a13SMatthias Weisser be used if available. These functions may be faster under some 4431d8834a13SMatthias Weisser conditions but may increase the binary size. 4432d8834a13SMatthias Weisser 4433588a13f7SSimon Glass- CONFIG_X86_RESET_VECTOR 4434588a13f7SSimon Glass If defined, the x86 reset vector code is included. This is not 4435588a13f7SSimon Glass needed when U-Boot is running from Coreboot. 4436b16f521aSGabe Black 4437fc33705eSMark Jackson- CONFIG_SYS_MPUCLK 4438fc33705eSMark Jackson Defines the MPU clock speed (in MHz). 4439fc33705eSMark Jackson 4440fc33705eSMark Jackson NOTE : currently only supported on AM335x platforms. 44415b5ece9eSGabe Black 444216678eb4SHeiko Schocher- CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC: 444316678eb4SHeiko Schocher Enables the RTC32K OSC on AM33xx based plattforms 444416678eb4SHeiko Schocher 4445f2717b47STimur TabiFreescale QE/FMAN Firmware Support: 4446f2717b47STimur Tabi----------------------------------- 4447f2717b47STimur Tabi 4448f2717b47STimur TabiThe Freescale QUICCEngine (QE) and Frame Manager (FMAN) both support the 4449f2717b47STimur Tabiloading of "firmware", which is encoded in the QE firmware binary format. 4450f2717b47STimur TabiThis firmware often needs to be loaded during U-Boot booting, so macros 4451f2717b47STimur Tabiare used to identify the storage device (NOR flash, SPI, etc) and the address 4452f2717b47STimur Tabiwithin that device. 4453f2717b47STimur Tabi 4454f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_ADDR 4455f2717b47STimur Tabi The address in the storage device where the firmware is located. The 4456f2717b47STimur Tabi meaning of this address depends on which CONFIG_SYS_QE_FW_IN_xxx macro 4457f2717b47STimur Tabi is also specified. 4458f2717b47STimur Tabi 4459f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_LENGTH 4460f2717b47STimur Tabi The maximum possible size of the firmware. The firmware binary format 4461f2717b47STimur Tabi has a field that specifies the actual size of the firmware, but it 4462f2717b47STimur Tabi might not be possible to read any part of the firmware unless some 4463f2717b47STimur Tabi local storage is allocated to hold the entire firmware first. 4464f2717b47STimur Tabi 4465f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_NOR 4466f2717b47STimur Tabi Specifies that QE/FMAN firmware is located in NOR flash, mapped as 4467f2717b47STimur Tabi normal addressable memory via the LBC. CONFIG_SYS_FMAN_FW_ADDR is the 4468f2717b47STimur Tabi virtual address in NOR flash. 4469f2717b47STimur Tabi 4470f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_NAND 4471f2717b47STimur Tabi Specifies that QE/FMAN firmware is located in NAND flash. 4472f2717b47STimur Tabi CONFIG_SYS_FMAN_FW_ADDR is the offset within NAND flash. 4473f2717b47STimur Tabi 4474f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_MMC 4475f2717b47STimur Tabi Specifies that QE/FMAN firmware is located on the primary SD/MMC 4476f2717b47STimur Tabi device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device. 4477f2717b47STimur Tabi 4478f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_SPIFLASH 4479f2717b47STimur Tabi Specifies that QE/FMAN firmware is located on the primary SPI 4480f2717b47STimur Tabi device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device. 4481f2717b47STimur Tabi 4482292dc6c5SLiu Gang- CONFIG_SYS_QE_FMAN_FW_IN_REMOTE 4483292dc6c5SLiu Gang Specifies that QE/FMAN firmware is located in the remote (master) 4484292dc6c5SLiu Gang memory space. CONFIG_SYS_FMAN_FW_ADDR is a virtual address which 4485fc54c7faSLiu Gang can be mapped from slave TLB->slave LAW->slave SRIO or PCIE outbound 4486fc54c7faSLiu Gang window->master inbound window->master LAW->the ucode address in 4487fc54c7faSLiu Gang master's memory space. 4488f2717b47STimur Tabi 4489c609719bSwdenkBuilding the Software: 4490c609719bSwdenk====================== 4491c609719bSwdenk 4492218ca724SWolfgang DenkBuilding U-Boot has been tested in several native build environments 4493218ca724SWolfgang Denkand in many different cross environments. Of course we cannot support 4494218ca724SWolfgang Denkall possibly existing versions of cross development tools in all 4495218ca724SWolfgang Denk(potentially obsolete) versions. In case of tool chain problems we 4496218ca724SWolfgang Denkrecommend to use the ELDK (see http://www.denx.de/wiki/DULG/ELDK) 4497218ca724SWolfgang Denkwhich is extensively used to build and test U-Boot. 4498c609719bSwdenk 4499218ca724SWolfgang DenkIf you are not using a native environment, it is assumed that you 4500218ca724SWolfgang Denkhave GNU cross compiling tools available in your path. In this case, 4501218ca724SWolfgang Denkyou must set the environment variable CROSS_COMPILE in your shell. 4502218ca724SWolfgang DenkNote that no changes to the Makefile or any other source files are 4503218ca724SWolfgang Denknecessary. For example using the ELDK on a 4xx CPU, please enter: 4504c609719bSwdenk 4505218ca724SWolfgang Denk $ CROSS_COMPILE=ppc_4xx- 4506218ca724SWolfgang Denk $ export CROSS_COMPILE 4507c609719bSwdenk 45082f8d396bSPeter TyserNote: If you wish to generate Windows versions of the utilities in 45092f8d396bSPeter Tyser the tools directory you can use the MinGW toolchain 45102f8d396bSPeter Tyser (http://www.mingw.org). Set your HOST tools to the MinGW 45112f8d396bSPeter Tyser toolchain and execute 'make tools'. For example: 45122f8d396bSPeter Tyser 45132f8d396bSPeter Tyser $ make HOSTCC=i586-mingw32msvc-gcc HOSTSTRIP=i586-mingw32msvc-strip tools 45142f8d396bSPeter Tyser 45152f8d396bSPeter Tyser Binaries such as tools/mkimage.exe will be created which can 45162f8d396bSPeter Tyser be executed on computers running Windows. 45172f8d396bSPeter Tyser 4518c609719bSwdenkU-Boot is intended to be simple to build. After installing the 4519c609719bSwdenksources you must configure U-Boot for one specific board type. This 4520c609719bSwdenkis done by typing: 4521c609719bSwdenk 4522c609719bSwdenk make NAME_config 4523c609719bSwdenk 4524218ca724SWolfgang Denkwhere "NAME_config" is the name of one of the existing configu- 45254d675ae6SMichael Jonesrations; see boards.cfg for supported names. 452654387ac9Swdenk 4527c609719bSwdenkNote: for some board special configuration names may exist; check if 4528c609719bSwdenk additional information is available from the board vendor; for 45292729af9dSwdenk instance, the TQM823L systems are available without (standard) 45302729af9dSwdenk or with LCD support. You can select such additional "features" 453111ccc33fSMarcel Ziswiler when choosing the configuration, i. e. 4532c609719bSwdenk 45332729af9dSwdenk make TQM823L_config 45342729af9dSwdenk - will configure for a plain TQM823L, i. e. no LCD support 4535c609719bSwdenk 4536c609719bSwdenk make TQM823L_LCD_config 4537c609719bSwdenk - will configure for a TQM823L with U-Boot console on LCD 4538c609719bSwdenk 4539c609719bSwdenk etc. 4540c609719bSwdenk 4541c609719bSwdenk 4542c609719bSwdenkFinally, type "make all", and you should get some working U-Boot 45437152b1d0Swdenkimages ready for download to / installation on your system: 4544c609719bSwdenk 4545c609719bSwdenk- "u-boot.bin" is a raw binary image 4546c609719bSwdenk- "u-boot" is an image in ELF binary format 4547c609719bSwdenk- "u-boot.srec" is in Motorola S-Record format 4548c609719bSwdenk 4549baf31249SMarian BalakowiczBy default the build is performed locally and the objects are saved 4550baf31249SMarian Balakowiczin the source directory. One of the two methods can be used to change 4551baf31249SMarian Balakowiczthis behavior and build U-Boot to some external directory: 4552baf31249SMarian Balakowicz 4553baf31249SMarian Balakowicz1. Add O= to the make command line invocations: 4554baf31249SMarian Balakowicz 4555baf31249SMarian Balakowicz make O=/tmp/build distclean 4556baf31249SMarian Balakowicz make O=/tmp/build NAME_config 4557baf31249SMarian Balakowicz make O=/tmp/build all 4558baf31249SMarian Balakowicz 4559baf31249SMarian Balakowicz2. Set environment variable BUILD_DIR to point to the desired location: 4560baf31249SMarian Balakowicz 4561baf31249SMarian Balakowicz export BUILD_DIR=/tmp/build 4562baf31249SMarian Balakowicz make distclean 4563baf31249SMarian Balakowicz make NAME_config 4564baf31249SMarian Balakowicz make all 4565baf31249SMarian Balakowicz 4566baf31249SMarian BalakowiczNote that the command line "O=" setting overrides the BUILD_DIR environment 4567baf31249SMarian Balakowiczvariable. 4568baf31249SMarian Balakowicz 4569c609719bSwdenk 4570c609719bSwdenkPlease be aware that the Makefiles assume you are using GNU make, so 4571c609719bSwdenkfor instance on NetBSD you might need to use "gmake" instead of 4572c609719bSwdenknative "make". 4573c609719bSwdenk 4574c609719bSwdenk 4575c609719bSwdenkIf the system board that you have is not listed, then you will need 4576c609719bSwdenkto port U-Boot to your hardware platform. To do this, follow these 4577c609719bSwdenksteps: 4578c609719bSwdenk 4579c609719bSwdenk1. Add a new configuration option for your board to the toplevel 45804d675ae6SMichael Jones "boards.cfg" file, using the existing entries as examples. 45814d675ae6SMichael Jones Follow the instructions there to keep the boards in order. 4582c609719bSwdenk2. Create a new directory to hold your board specific code. Add any 458385ec0bccSwdenk files you need. In your board directory, you will need at least 458485ec0bccSwdenk the "Makefile", a "<board>.c", "flash.c" and "u-boot.lds". 458585ec0bccSwdenk3. Create a new configuration file "include/configs/<board>.h" for 458685ec0bccSwdenk your board 4587c609719bSwdenk3. If you're porting U-Boot to a new CPU, then also create a new 4588c609719bSwdenk directory to hold your CPU specific code. Add any files you need. 458985ec0bccSwdenk4. Run "make <board>_config" with your new name. 4590c609719bSwdenk5. Type "make", and you should get a working "u-boot.srec" file 4591c609719bSwdenk to be installed on your target system. 459285ec0bccSwdenk6. Debug and solve any problems that might arise. 4593c609719bSwdenk [Of course, this last step is much harder than it sounds.] 4594c609719bSwdenk 4595c609719bSwdenk 4596c609719bSwdenkTesting of U-Boot Modifications, Ports to New Hardware, etc.: 4597c609719bSwdenk============================================================== 4598c609719bSwdenk 4599c609719bSwdenkIf you have modified U-Boot sources (for instance added a new board 4600c609719bSwdenkor support for new devices, a new CPU, etc.) you are expected to 4601c609719bSwdenkprovide feedback to the other developers. The feedback normally takes 4602c609719bSwdenkthe form of a "patch", i. e. a context diff against a certain (latest 4603218ca724SWolfgang Denkofficial or latest in the git repository) version of U-Boot sources. 4604c609719bSwdenk 4605c609719bSwdenkBut before you submit such a patch, please verify that your modifi- 4606c609719bSwdenkcation did not break existing code. At least make sure that *ALL* of 4607c609719bSwdenkthe supported boards compile WITHOUT ANY compiler warnings. To do so, 4608c609719bSwdenkjust run the "MAKEALL" script, which will configure and build U-Boot 4609c609719bSwdenkfor ALL supported system. Be warned, this will take a while. You can 46107152b1d0Swdenkselect which (cross) compiler to use by passing a `CROSS_COMPILE' 4611218ca724SWolfgang Denkenvironment variable to the script, i. e. to use the ELDK cross tools 4612218ca724SWolfgang Denkyou can type 4613c609719bSwdenk 4614c609719bSwdenk CROSS_COMPILE=ppc_8xx- MAKEALL 4615c609719bSwdenk 4616c609719bSwdenkor to build on a native PowerPC system you can type 4617c609719bSwdenk 4618c609719bSwdenk CROSS_COMPILE=' ' MAKEALL 4619c609719bSwdenk 4620218ca724SWolfgang DenkWhen using the MAKEALL script, the default behaviour is to build 4621218ca724SWolfgang DenkU-Boot in the source directory. This location can be changed by 4622218ca724SWolfgang Denksetting the BUILD_DIR environment variable. Also, for each target 4623218ca724SWolfgang Denkbuilt, the MAKEALL script saves two log files (<target>.ERR and 4624218ca724SWolfgang Denk<target>.MAKEALL) in the <source dir>/LOG directory. This default 4625218ca724SWolfgang Denklocation can be changed by setting the MAKEALL_LOGDIR environment 4626218ca724SWolfgang Denkvariable. For example: 4627baf31249SMarian Balakowicz 4628baf31249SMarian Balakowicz export BUILD_DIR=/tmp/build 4629baf31249SMarian Balakowicz export MAKEALL_LOGDIR=/tmp/log 4630baf31249SMarian Balakowicz CROSS_COMPILE=ppc_8xx- MAKEALL 4631baf31249SMarian Balakowicz 4632218ca724SWolfgang DenkWith the above settings build objects are saved in the /tmp/build, 4633218ca724SWolfgang Denklog files are saved in the /tmp/log and the source tree remains clean 4634218ca724SWolfgang Denkduring the whole build process. 4635baf31249SMarian Balakowicz 4636baf31249SMarian Balakowicz 4637c609719bSwdenkSee also "U-Boot Porting Guide" below. 4638c609719bSwdenk 4639c609719bSwdenk 4640c609719bSwdenkMonitor Commands - Overview: 4641c609719bSwdenk============================ 4642c609719bSwdenk 4643c609719bSwdenkgo - start application at address 'addr' 4644c609719bSwdenkrun - run commands in an environment variable 4645c609719bSwdenkbootm - boot application image from memory 4646c609719bSwdenkbootp - boot image via network using BootP/TFTP protocol 464744f074c7SMarek Vasutbootz - boot zImage from memory 4648c609719bSwdenktftpboot- boot image via network using TFTP protocol 4649c609719bSwdenk and env variables "ipaddr" and "serverip" 4650c609719bSwdenk (and eventually "gatewayip") 46511fb7cd49SSimon Glasstftpput - upload a file via network using TFTP protocol 4652c609719bSwdenkrarpboot- boot image via network using RARP/TFTP protocol 4653c609719bSwdenkdiskboot- boot from IDE devicebootd - boot default, i.e., run 'bootcmd' 4654c609719bSwdenkloads - load S-Record file over serial line 4655c609719bSwdenkloadb - load binary file over serial line (kermit mode) 4656c609719bSwdenkmd - memory display 4657c609719bSwdenkmm - memory modify (auto-incrementing) 4658c609719bSwdenknm - memory modify (constant address) 4659c609719bSwdenkmw - memory write (fill) 4660c609719bSwdenkcp - memory copy 4661c609719bSwdenkcmp - memory compare 4662c609719bSwdenkcrc32 - checksum calculation 46630f89c54bSPeter Tyseri2c - I2C sub-system 4664c609719bSwdenksspi - SPI utility commands 4665c609719bSwdenkbase - print or set address offset 4666c609719bSwdenkprintenv- print environment variables 4667c609719bSwdenksetenv - set environment variables 4668c609719bSwdenksaveenv - save environment variables to persistent storage 4669c609719bSwdenkprotect - enable or disable FLASH write protection 4670c609719bSwdenkerase - erase FLASH memory 4671c609719bSwdenkflinfo - print FLASH memory information 467210635afaSKarl O. Pincnand - NAND memory operations (see doc/README.nand) 4673c609719bSwdenkbdinfo - print Board Info structure 4674c609719bSwdenkiminfo - print header information for application image 4675c609719bSwdenkconinfo - print console devices and informations 4676c609719bSwdenkide - IDE sub-system 4677c609719bSwdenkloop - infinite loop on address range 467856523f12Swdenkloopw - infinite write loop on address range 4679c609719bSwdenkmtest - simple RAM test 4680c609719bSwdenkicache - enable or disable instruction cache 4681c609719bSwdenkdcache - enable or disable data cache 4682c609719bSwdenkreset - Perform RESET of the CPU 4683c609719bSwdenkecho - echo args to console 4684c609719bSwdenkversion - print monitor version 4685c609719bSwdenkhelp - print online help 4686c609719bSwdenk? - alias for 'help' 4687c609719bSwdenk 4688c609719bSwdenk 4689c609719bSwdenkMonitor Commands - Detailed Description: 4690c609719bSwdenk======================================== 4691c609719bSwdenk 4692c609719bSwdenkTODO. 4693c609719bSwdenk 4694c609719bSwdenkFor now: just type "help <command>". 4695c609719bSwdenk 4696c609719bSwdenk 4697c609719bSwdenkEnvironment Variables: 4698c609719bSwdenk====================== 4699c609719bSwdenk 4700c609719bSwdenkU-Boot supports user configuration using Environment Variables which 4701c609719bSwdenkcan be made persistent by saving to Flash memory. 4702c609719bSwdenk 4703c609719bSwdenkEnvironment Variables are set using "setenv", printed using 4704c609719bSwdenk"printenv", and saved to Flash using "saveenv". Using "setenv" 4705c609719bSwdenkwithout a value can be used to delete a variable from the 4706c609719bSwdenkenvironment. As long as you don't save the environment you are 4707c609719bSwdenkworking with an in-memory copy. In case the Flash area containing the 4708c609719bSwdenkenvironment is erased by accident, a default environment is provided. 4709c609719bSwdenk 4710c96f86eeSWolfgang DenkSome configuration options can be set using Environment Variables. 4711c96f86eeSWolfgang Denk 4712c96f86eeSWolfgang DenkList of environment variables (most likely not complete): 4713c609719bSwdenk 4714c609719bSwdenk baudrate - see CONFIG_BAUDRATE 4715c609719bSwdenk 4716c609719bSwdenk bootdelay - see CONFIG_BOOTDELAY 4717c609719bSwdenk 4718c609719bSwdenk bootcmd - see CONFIG_BOOTCOMMAND 4719c609719bSwdenk 4720c609719bSwdenk bootargs - Boot arguments when booting an RTOS image 4721c609719bSwdenk 4722c609719bSwdenk bootfile - Name of the image to load with TFTP 4723c609719bSwdenk 47247d721e34SBartlomiej Sieka bootm_low - Memory range available for image processing in the bootm 47257d721e34SBartlomiej Sieka command can be restricted. This variable is given as 47267d721e34SBartlomiej Sieka a hexadecimal number and defines lowest address allowed 47277d721e34SBartlomiej Sieka for use by the bootm command. See also "bootm_size" 47287d721e34SBartlomiej Sieka environment variable. Address defined by "bootm_low" is 47297d721e34SBartlomiej Sieka also the base of the initial memory mapping for the Linux 4730c3624e6eSGrant Likely kernel -- see the description of CONFIG_SYS_BOOTMAPSZ and 4731c3624e6eSGrant Likely bootm_mapsize. 4732c3624e6eSGrant Likely 4733c3624e6eSGrant Likely bootm_mapsize - Size of the initial memory mapping for the Linux kernel. 4734c3624e6eSGrant Likely This variable is given as a hexadecimal number and it 4735c3624e6eSGrant Likely defines the size of the memory region starting at base 4736c3624e6eSGrant Likely address bootm_low that is accessible by the Linux kernel 4737c3624e6eSGrant Likely during early boot. If unset, CONFIG_SYS_BOOTMAPSZ is used 4738c3624e6eSGrant Likely as the default value if it is defined, and bootm_size is 4739c3624e6eSGrant Likely used otherwise. 47407d721e34SBartlomiej Sieka 47417d721e34SBartlomiej Sieka bootm_size - Memory range available for image processing in the bootm 47427d721e34SBartlomiej Sieka command can be restricted. This variable is given as 47437d721e34SBartlomiej Sieka a hexadecimal number and defines the size of the region 47447d721e34SBartlomiej Sieka allowed for use by the bootm command. See also "bootm_low" 47457d721e34SBartlomiej Sieka environment variable. 47467d721e34SBartlomiej Sieka 47474bae9090SBartlomiej Sieka updatefile - Location of the software update file on a TFTP server, used 47484bae9090SBartlomiej Sieka by the automatic software update feature. Please refer to 47494bae9090SBartlomiej Sieka documentation in doc/README.update for more details. 47504bae9090SBartlomiej Sieka 4751c609719bSwdenk autoload - if set to "no" (any string beginning with 'n'), 4752c609719bSwdenk "bootp" will just load perform a lookup of the 4753c609719bSwdenk configuration from the BOOTP server, but not try to 4754c609719bSwdenk load any image using TFTP 4755c609719bSwdenk 4756c609719bSwdenk autostart - if set to "yes", an image loaded using the "bootp", 4757c609719bSwdenk "rarpboot", "tftpboot" or "diskboot" commands will 4758c609719bSwdenk be automatically started (by internally calling 4759c609719bSwdenk "bootm") 4760c609719bSwdenk 47614a6fd34bSwdenk If set to "no", a standalone image passed to the 47624a6fd34bSwdenk "bootm" command will be copied to the load address 47634a6fd34bSwdenk (and eventually uncompressed), but NOT be started. 47644a6fd34bSwdenk This can be used to load and uncompress arbitrary 47654a6fd34bSwdenk data. 47664a6fd34bSwdenk 4767a28afca5SDavid A. Long fdt_high - if set this restricts the maximum address that the 4768a28afca5SDavid A. Long flattened device tree will be copied into upon boot. 4769fa34f6b2SShawn Guo For example, if you have a system with 1 GB memory 4770fa34f6b2SShawn Guo at physical address 0x10000000, while Linux kernel 4771fa34f6b2SShawn Guo only recognizes the first 704 MB as low memory, you 4772fa34f6b2SShawn Guo may need to set fdt_high as 0x3C000000 to have the 4773fa34f6b2SShawn Guo device tree blob be copied to the maximum address 4774fa34f6b2SShawn Guo of the 704 MB low memory, so that Linux kernel can 4775fa34f6b2SShawn Guo access it during the boot procedure. 4776fa34f6b2SShawn Guo 4777a28afca5SDavid A. Long If this is set to the special value 0xFFFFFFFF then 4778a28afca5SDavid A. Long the fdt will not be copied at all on boot. For this 4779a28afca5SDavid A. Long to work it must reside in writable memory, have 4780a28afca5SDavid A. Long sufficient padding on the end of it for u-boot to 4781a28afca5SDavid A. Long add the information it needs into it, and the memory 4782a28afca5SDavid A. Long must be accessible by the kernel. 4783a28afca5SDavid A. Long 4784eea63e05SSimon Glass fdtcontroladdr- if set this is the address of the control flattened 4785eea63e05SSimon Glass device tree used by U-Boot when CONFIG_OF_CONTROL is 4786eea63e05SSimon Glass defined. 4787eea63e05SSimon Glass 478817ea1177Swdenk i2cfast - (PPC405GP|PPC405EP only) 478917ea1177Swdenk if set to 'y' configures Linux I2C driver for fast 479017ea1177Swdenk mode (400kHZ). This environment variable is used in 479117ea1177Swdenk initialization code. So, for changes to be effective 479217ea1177Swdenk it must be saved and board must be reset. 479317ea1177Swdenk 4794c609719bSwdenk initrd_high - restrict positioning of initrd images: 4795c609719bSwdenk If this variable is not set, initrd images will be 4796c609719bSwdenk copied to the highest possible address in RAM; this 4797c609719bSwdenk is usually what you want since it allows for 4798c609719bSwdenk maximum initrd size. If for some reason you want to 4799c609719bSwdenk make sure that the initrd image is loaded below the 48006d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BOOTMAPSZ limit, you can set this environment 4801c609719bSwdenk variable to a value of "no" or "off" or "0". 4802c609719bSwdenk Alternatively, you can set it to a maximum upper 4803c609719bSwdenk address to use (U-Boot will still check that it 4804c609719bSwdenk does not overwrite the U-Boot stack and data). 4805c609719bSwdenk 4806c609719bSwdenk For instance, when you have a system with 16 MB 48077152b1d0Swdenk RAM, and want to reserve 4 MB from use by Linux, 4808c609719bSwdenk you can do this by adding "mem=12M" to the value of 4809c609719bSwdenk the "bootargs" variable. However, now you must make 48107152b1d0Swdenk sure that the initrd image is placed in the first 4811c609719bSwdenk 12 MB as well - this can be done with 4812c609719bSwdenk 4813c609719bSwdenk setenv initrd_high 00c00000 4814c609719bSwdenk 481538b99261Swdenk If you set initrd_high to 0xFFFFFFFF, this is an 481638b99261Swdenk indication to U-Boot that all addresses are legal 481738b99261Swdenk for the Linux kernel, including addresses in flash 481838b99261Swdenk memory. In this case U-Boot will NOT COPY the 481938b99261Swdenk ramdisk at all. This may be useful to reduce the 482038b99261Swdenk boot time on your system, but requires that this 482138b99261Swdenk feature is supported by your Linux kernel. 482238b99261Swdenk 4823c609719bSwdenk ipaddr - IP address; needed for tftpboot command 4824c609719bSwdenk 4825c609719bSwdenk loadaddr - Default load address for commands like "bootp", 4826dc7c9a1aSwdenk "rarpboot", "tftpboot", "loadb" or "diskboot" 4827c609719bSwdenk 4828c609719bSwdenk loads_echo - see CONFIG_LOADS_ECHO 4829c609719bSwdenk 4830c609719bSwdenk serverip - TFTP server IP address; needed for tftpboot command 4831c609719bSwdenk 4832c609719bSwdenk bootretry - see CONFIG_BOOT_RETRY_TIME 4833c609719bSwdenk 4834c609719bSwdenk bootdelaykey - see CONFIG_AUTOBOOT_DELAY_STR 4835c609719bSwdenk 4836c609719bSwdenk bootstopkey - see CONFIG_AUTOBOOT_STOP_STR 4837c609719bSwdenk 4838e2a53458SMike Frysinger ethprime - controls which interface is used first. 4839a3d991bdSwdenk 4840e2a53458SMike Frysinger ethact - controls which interface is currently active. 4841e2a53458SMike Frysinger For example you can do the following 4842a3d991bdSwdenk 484348690d80SHeiko Schocher => setenv ethact FEC 484448690d80SHeiko Schocher => ping 192.168.0.1 # traffic sent on FEC 484548690d80SHeiko Schocher => setenv ethact SCC 484648690d80SHeiko Schocher => ping 10.0.0.1 # traffic sent on SCC 4847a3d991bdSwdenk 4848e1692577SMatthias Fuchs ethrotate - When set to "no" U-Boot does not go through all 4849e1692577SMatthias Fuchs available network interfaces. 4850e1692577SMatthias Fuchs It just stays at the currently selected interface. 4851e1692577SMatthias Fuchs 4852a3d991bdSwdenk netretry - When set to "no" each network operation will 4853a3d991bdSwdenk either succeed or fail without retrying. 48546e592385Swdenk When set to "once" the network operation will 48556e592385Swdenk fail when all the available network interfaces 48566e592385Swdenk are tried once without success. 4857a3d991bdSwdenk Useful on scripts which control the retry operation 4858a3d991bdSwdenk themselves. 4859a3d991bdSwdenk 4860b4e2f89dSJean-Christophe PLAGNIOL-VILLARD npe_ucode - set load address for the NPE microcode 4861a1cf027aSJean-Christophe PLAGNIOL-VILLARD 48628d51aacdSSimon Glass silent_linux - If set then linux will be told to boot silently, by 48638d51aacdSSimon Glass changing the console to be empty. If "yes" it will be 48648d51aacdSSimon Glass made silent. If "no" it will not be made silent. If 48658d51aacdSSimon Glass unset, then it will be made silent if the U-Boot console 48668d51aacdSSimon Glass is silent. 48678d51aacdSSimon Glass 486828cb9375SWolfgang Denk tftpsrcport - If this is set, the value is used for TFTP's 4869ecb0ccd9SWolfgang Denk UDP source port. 4870ecb0ccd9SWolfgang Denk 487128cb9375SWolfgang Denk tftpdstport - If this is set, the value is used for TFTP's UDP 487228cb9375SWolfgang Denk destination port instead of the Well Know Port 69. 487328cb9375SWolfgang Denk 4874c96f86eeSWolfgang Denk tftpblocksize - Block size to use for TFTP transfers; if not set, 4875c96f86eeSWolfgang Denk we use the TFTP server's default block size 4876c96f86eeSWolfgang Denk 4877c96f86eeSWolfgang Denk tftptimeout - Retransmission timeout for TFTP packets (in milli- 4878c96f86eeSWolfgang Denk seconds, minimum value is 1000 = 1 second). Defines 4879c96f86eeSWolfgang Denk when a packet is considered to be lost so it has to 4880c96f86eeSWolfgang Denk be retransmitted. The default is 5000 = 5 seconds. 4881c96f86eeSWolfgang Denk Lowering this value may make downloads succeed 4882c96f86eeSWolfgang Denk faster in networks with high packet loss rates or 4883c96f86eeSWolfgang Denk with unreliable TFTP servers. 4884c96f86eeSWolfgang Denk 4885a3d991bdSwdenk vlan - When set to a value < 4095 the traffic over 488611ccc33fSMarcel Ziswiler Ethernet is encapsulated/received over 802.1q 4887a3d991bdSwdenk VLAN tagged frames. 4888c609719bSwdenk 4889dc0b7b0eSJason HobbsThe following image location variables contain the location of images 4890dc0b7b0eSJason Hobbsused in booting. The "Image" column gives the role of the image and is 4891dc0b7b0eSJason Hobbsnot an environment variable name. The other columns are environment 4892dc0b7b0eSJason Hobbsvariable names. "File Name" gives the name of the file on a TFTP 4893dc0b7b0eSJason Hobbsserver, "RAM Address" gives the location in RAM the image will be 4894dc0b7b0eSJason Hobbsloaded to, and "Flash Location" gives the image's address in NOR 4895dc0b7b0eSJason Hobbsflash or offset in NAND flash. 4896dc0b7b0eSJason Hobbs 4897dc0b7b0eSJason Hobbs*Note* - these variables don't have to be defined for all boards, some 4898dc0b7b0eSJason Hobbsboards currenlty use other variables for these purposes, and some 4899dc0b7b0eSJason Hobbsboards use these variables for other purposes. 4900dc0b7b0eSJason Hobbs 4901dc0b7b0eSJason HobbsImage File Name RAM Address Flash Location 4902dc0b7b0eSJason Hobbs----- --------- ----------- -------------- 4903dc0b7b0eSJason Hobbsu-boot u-boot u-boot_addr_r u-boot_addr 4904dc0b7b0eSJason HobbsLinux kernel bootfile kernel_addr_r kernel_addr 4905dc0b7b0eSJason Hobbsdevice tree blob fdtfile fdt_addr_r fdt_addr 4906dc0b7b0eSJason Hobbsramdisk ramdiskfile ramdisk_addr_r ramdisk_addr 4907dc0b7b0eSJason Hobbs 4908c609719bSwdenkThe following environment variables may be used and automatically 4909c609719bSwdenkupdated by the network boot commands ("bootp" and "rarpboot"), 4910c609719bSwdenkdepending the information provided by your boot server: 4911c609719bSwdenk 4912c609719bSwdenk bootfile - see above 4913c609719bSwdenk dnsip - IP address of your Domain Name Server 4914fe389a82Sstroese dnsip2 - IP address of your secondary Domain Name Server 4915c609719bSwdenk gatewayip - IP address of the Gateway (Router) to use 4916c609719bSwdenk hostname - Target hostname 4917c609719bSwdenk ipaddr - see above 4918c609719bSwdenk netmask - Subnet Mask 4919c609719bSwdenk rootpath - Pathname of the root filesystem on the NFS server 4920c609719bSwdenk serverip - see above 4921c609719bSwdenk 4922c609719bSwdenk 4923c609719bSwdenkThere are two special Environment Variables: 4924c609719bSwdenk 4925c609719bSwdenk serial# - contains hardware identification information such 4926c609719bSwdenk as type string and/or serial number 4927c609719bSwdenk ethaddr - Ethernet address 4928c609719bSwdenk 4929c609719bSwdenkThese variables can be set only once (usually during manufacturing of 4930c609719bSwdenkthe board). U-Boot refuses to delete or overwrite these variables 4931c609719bSwdenkonce they have been set once. 4932c609719bSwdenk 4933c609719bSwdenk 4934c1551ea8SstroeseFurther special Environment Variables: 4935c1551ea8Sstroese 4936c1551ea8Sstroese ver - Contains the U-Boot version string as printed 4937c1551ea8Sstroese with the "version" command. This variable is 4938c1551ea8Sstroese readonly (see CONFIG_VERSION_VARIABLE). 4939c1551ea8Sstroese 4940c1551ea8Sstroese 4941c609719bSwdenkPlease note that changes to some configuration parameters may take 4942c609719bSwdenkonly effect after the next boot (yes, that's just like Windoze :-). 4943c609719bSwdenk 4944c609719bSwdenk 4945170ab110SJoe HershbergerCallback functions for environment variables: 4946170ab110SJoe Hershberger--------------------------------------------- 4947170ab110SJoe Hershberger 4948170ab110SJoe HershbergerFor some environment variables, the behavior of u-boot needs to change 4949170ab110SJoe Hershbergerwhen their values are changed. This functionailty allows functions to 4950170ab110SJoe Hershbergerbe associated with arbitrary variables. On creation, overwrite, or 4951170ab110SJoe Hershbergerdeletion, the callback will provide the opportunity for some side 4952170ab110SJoe Hershbergereffect to happen or for the change to be rejected. 4953170ab110SJoe Hershberger 4954170ab110SJoe HershbergerThe callbacks are named and associated with a function using the 4955170ab110SJoe HershbergerU_BOOT_ENV_CALLBACK macro in your board or driver code. 4956170ab110SJoe Hershberger 4957170ab110SJoe HershbergerThese callbacks are associated with variables in one of two ways. The 4958170ab110SJoe Hershbergerstatic list can be added to by defining CONFIG_ENV_CALLBACK_LIST_STATIC 4959170ab110SJoe Hershbergerin the board configuration to a string that defines a list of 4960170ab110SJoe Hershbergerassociations. The list must be in the following format: 4961170ab110SJoe Hershberger 4962170ab110SJoe Hershberger entry = variable_name[:callback_name] 4963170ab110SJoe Hershberger list = entry[,list] 4964170ab110SJoe Hershberger 4965170ab110SJoe HershbergerIf the callback name is not specified, then the callback is deleted. 4966170ab110SJoe HershbergerSpaces are also allowed anywhere in the list. 4967170ab110SJoe Hershberger 4968170ab110SJoe HershbergerCallbacks can also be associated by defining the ".callbacks" variable 4969170ab110SJoe Hershbergerwith the same list format above. Any association in ".callbacks" will 4970170ab110SJoe Hershbergeroverride any association in the static list. You can define 4971170ab110SJoe HershbergerCONFIG_ENV_CALLBACK_LIST_DEFAULT to a list (string) to define the 4972170ab110SJoe Hershberger".callbacks" envirnoment variable in the default or embedded environment. 4973170ab110SJoe Hershberger 4974170ab110SJoe Hershberger 4975f07771ccSwdenkCommand Line Parsing: 4976f07771ccSwdenk===================== 4977f07771ccSwdenk 4978f07771ccSwdenkThere are two different command line parsers available with U-Boot: 49797152b1d0Swdenkthe old "simple" one, and the much more powerful "hush" shell: 4980f07771ccSwdenk 4981f07771ccSwdenkOld, simple command line parser: 4982f07771ccSwdenk-------------------------------- 4983f07771ccSwdenk 4984f07771ccSwdenk- supports environment variables (through setenv / saveenv commands) 4985f07771ccSwdenk- several commands on one line, separated by ';' 4986fe126d8bSWolfgang Denk- variable substitution using "... ${name} ..." syntax 4987f07771ccSwdenk- special characters ('$', ';') can be escaped by prefixing with '\', 4988f07771ccSwdenk for example: 4989fe126d8bSWolfgang Denk setenv bootcmd bootm \${address} 4990f07771ccSwdenk- You can also escape text by enclosing in single apostrophes, for example: 4991f07771ccSwdenk setenv addip 'setenv bootargs $bootargs ip=$ipaddr:$serverip:$gatewayip:$netmask:$hostname::off' 4992f07771ccSwdenk 4993f07771ccSwdenkHush shell: 4994f07771ccSwdenk----------- 4995f07771ccSwdenk 4996f07771ccSwdenk- similar to Bourne shell, with control structures like 4997f07771ccSwdenk if...then...else...fi, for...do...done; while...do...done, 4998f07771ccSwdenk until...do...done, ... 4999f07771ccSwdenk- supports environment ("global") variables (through setenv / saveenv 5000f07771ccSwdenk commands) and local shell variables (through standard shell syntax 5001f07771ccSwdenk "name=value"); only environment variables can be used with "run" 5002f07771ccSwdenk command 5003f07771ccSwdenk 5004f07771ccSwdenkGeneral rules: 5005f07771ccSwdenk-------------- 5006f07771ccSwdenk 5007f07771ccSwdenk(1) If a command line (or an environment variable executed by a "run" 5008f07771ccSwdenk command) contains several commands separated by semicolon, and 5009f07771ccSwdenk one of these commands fails, then the remaining commands will be 5010f07771ccSwdenk executed anyway. 5011f07771ccSwdenk 5012f07771ccSwdenk(2) If you execute several variables with one call to run (i. e. 501311ccc33fSMarcel Ziswiler calling run with a list of variables as arguments), any failing 5014f07771ccSwdenk command will cause "run" to terminate, i. e. the remaining 5015f07771ccSwdenk variables are not executed. 5016f07771ccSwdenk 5017c609719bSwdenkNote for Redundant Ethernet Interfaces: 5018c609719bSwdenk======================================= 5019c609719bSwdenk 502011ccc33fSMarcel ZiswilerSome boards come with redundant Ethernet interfaces; U-Boot supports 5021c609719bSwdenksuch configurations and is capable of automatic selection of a 50227152b1d0Swdenk"working" interface when needed. MAC assignment works as follows: 5023c609719bSwdenk 5024c609719bSwdenkNetwork interfaces are numbered eth0, eth1, eth2, ... Corresponding 5025c609719bSwdenkMAC addresses can be stored in the environment as "ethaddr" (=>eth0), 5026c609719bSwdenk"eth1addr" (=>eth1), "eth2addr", ... 5027c609719bSwdenk 5028c609719bSwdenkIf the network interface stores some valid MAC address (for instance 5029c609719bSwdenkin SROM), this is used as default address if there is NO correspon- 5030c609719bSwdenkding setting in the environment; if the corresponding environment 5031c609719bSwdenkvariable is set, this overrides the settings in the card; that means: 5032c609719bSwdenk 5033c609719bSwdenko If the SROM has a valid MAC address, and there is no address in the 5034c609719bSwdenk environment, the SROM's address is used. 5035c609719bSwdenk 5036c609719bSwdenko If there is no valid address in the SROM, and a definition in the 5037c609719bSwdenk environment exists, then the value from the environment variable is 5038c609719bSwdenk used. 5039c609719bSwdenk 5040c609719bSwdenko If both the SROM and the environment contain a MAC address, and 5041c609719bSwdenk both addresses are the same, this MAC address is used. 5042c609719bSwdenk 5043c609719bSwdenko If both the SROM and the environment contain a MAC address, and the 5044c609719bSwdenk addresses differ, the value from the environment is used and a 5045c609719bSwdenk warning is printed. 5046c609719bSwdenk 5047c609719bSwdenko If neither SROM nor the environment contain a MAC address, an error 5048c609719bSwdenk is raised. 5049c609719bSwdenk 5050ecee9324SBen WarrenIf Ethernet drivers implement the 'write_hwaddr' function, valid MAC addresses 5051ecee9324SBen Warrenwill be programmed into hardware as part of the initialization process. This 5052ecee9324SBen Warrenmay be skipped by setting the appropriate 'ethmacskip' environment variable. 5053ecee9324SBen WarrenThe naming convention is as follows: 5054ecee9324SBen Warren"ethmacskip" (=>eth0), "eth1macskip" (=>eth1) etc. 5055c609719bSwdenk 5056c609719bSwdenkImage Formats: 5057c609719bSwdenk============== 5058c609719bSwdenk 50593310c549SMarian BalakowiczU-Boot is capable of booting (and performing other auxiliary operations on) 50603310c549SMarian Balakowiczimages in two formats: 50613310c549SMarian Balakowicz 50623310c549SMarian BalakowiczNew uImage format (FIT) 50633310c549SMarian Balakowicz----------------------- 50643310c549SMarian Balakowicz 50653310c549SMarian BalakowiczFlexible and powerful format based on Flattened Image Tree -- FIT (similar 50663310c549SMarian Balakowiczto Flattened Device Tree). It allows the use of images with multiple 50673310c549SMarian Balakowiczcomponents (several kernels, ramdisks, etc.), with contents protected by 50683310c549SMarian BalakowiczSHA1, MD5 or CRC32. More details are found in the doc/uImage.FIT directory. 50693310c549SMarian Balakowicz 50703310c549SMarian Balakowicz 50713310c549SMarian BalakowiczOld uImage format 50723310c549SMarian Balakowicz----------------- 50733310c549SMarian Balakowicz 50743310c549SMarian BalakowiczOld image format is based on binary files which can be basically anything, 50753310c549SMarian Balakowiczpreceded by a special header; see the definitions in include/image.h for 50763310c549SMarian Balakowiczdetails; basically, the header defines the following image properties: 5077c609719bSwdenk 5078c609719bSwdenk* Target Operating System (Provisions for OpenBSD, NetBSD, FreeBSD, 5079c609719bSwdenk 4.4BSD, Linux, SVR4, Esix, Solaris, Irix, SCO, Dell, NCR, VxWorks, 5080f5ed9e39SPeter Tyser LynxOS, pSOS, QNX, RTEMS, INTEGRITY; 5081f5ed9e39SPeter Tyser Currently supported: Linux, NetBSD, VxWorks, QNX, RTEMS, LynxOS, 5082f5ed9e39SPeter Tyser INTEGRITY). 50837b64fef3SWolfgang Denk* Target CPU Architecture (Provisions for Alpha, ARM, AVR32, Intel x86, 5084afc1ce82SMacpaul Lin IA64, MIPS, NDS32, Nios II, PowerPC, IBM S390, SuperH, Sparc, Sparc 64 Bit; 5085afc1ce82SMacpaul Lin Currently supported: ARM, AVR32, Intel x86, MIPS, NDS32, Nios II, PowerPC). 5086c29fdfc1Swdenk* Compression Type (uncompressed, gzip, bzip2) 5087c609719bSwdenk* Load Address 5088c609719bSwdenk* Entry Point 5089c609719bSwdenk* Image Name 5090c609719bSwdenk* Image Timestamp 5091c609719bSwdenk 5092c609719bSwdenkThe header is marked by a special Magic Number, and both the header 5093c609719bSwdenkand the data portions of the image are secured against corruption by 5094c609719bSwdenkCRC32 checksums. 5095c609719bSwdenk 5096c609719bSwdenk 5097c609719bSwdenkLinux Support: 5098c609719bSwdenk============== 5099c609719bSwdenk 5100c609719bSwdenkAlthough U-Boot should support any OS or standalone application 51017152b1d0Swdenkeasily, the main focus has always been on Linux during the design of 5102c609719bSwdenkU-Boot. 5103c609719bSwdenk 5104c609719bSwdenkU-Boot includes many features that so far have been part of some 5105c609719bSwdenkspecial "boot loader" code within the Linux kernel. Also, any 5106c609719bSwdenk"initrd" images to be used are no longer part of one big Linux image; 5107c609719bSwdenkinstead, kernel and "initrd" are separate images. This implementation 51087152b1d0Swdenkserves several purposes: 5109c609719bSwdenk 5110c609719bSwdenk- the same features can be used for other OS or standalone 5111c609719bSwdenk applications (for instance: using compressed images to reduce the 5112c609719bSwdenk Flash memory footprint) 5113c609719bSwdenk 5114c609719bSwdenk- it becomes much easier to port new Linux kernel versions because 51157152b1d0Swdenk lots of low-level, hardware dependent stuff are done by U-Boot 5116c609719bSwdenk 5117c609719bSwdenk- the same Linux kernel image can now be used with different "initrd" 5118c609719bSwdenk images; of course this also means that different kernel images can 5119c609719bSwdenk be run with the same "initrd". This makes testing easier (you don't 5120c609719bSwdenk have to build a new "zImage.initrd" Linux image when you just 5121c609719bSwdenk change a file in your "initrd"). Also, a field-upgrade of the 5122c609719bSwdenk software is easier now. 5123c609719bSwdenk 5124c609719bSwdenk 5125c609719bSwdenkLinux HOWTO: 5126c609719bSwdenk============ 5127c609719bSwdenk 5128c609719bSwdenkPorting Linux to U-Boot based systems: 5129c609719bSwdenk--------------------------------------- 5130c609719bSwdenk 5131c609719bSwdenkU-Boot cannot save you from doing all the necessary modifications to 5132c609719bSwdenkconfigure the Linux device drivers for use with your target hardware 5133c609719bSwdenk(no, we don't intend to provide a full virtual machine interface to 5134c609719bSwdenkLinux :-). 5135c609719bSwdenk 5136a47a12beSStefan RoeseBut now you can ignore ALL boot loader code (in arch/powerpc/mbxboot). 5137c609719bSwdenk 5138c609719bSwdenkJust make sure your machine specific header file (for instance 5139c609719bSwdenkinclude/asm-ppc/tqm8xx.h) includes the same definition of the Board 51401dc30693SMarkus HeidelbergInformation structure as we define in include/asm-<arch>/u-boot.h, 51411dc30693SMarkus Heidelbergand make sure that your definition of IMAP_ADDR uses the same value 51426d0f6bcfSJean-Christophe PLAGNIOL-VILLARDas your U-Boot configuration in CONFIG_SYS_IMMR. 5143c609719bSwdenk 5144c609719bSwdenk 5145c609719bSwdenkConfiguring the Linux kernel: 5146c609719bSwdenk----------------------------- 5147c609719bSwdenk 5148c609719bSwdenkNo specific requirements for U-Boot. Make sure you have some root 5149c609719bSwdenkdevice (initial ramdisk, NFS) for your target system. 5150c609719bSwdenk 5151c609719bSwdenk 5152c609719bSwdenkBuilding a Linux Image: 5153c609719bSwdenk----------------------- 5154c609719bSwdenk 515524ee89b9SwdenkWith U-Boot, "normal" build targets like "zImage" or "bzImage" are 515624ee89b9Swdenknot used. If you use recent kernel source, a new build target 515724ee89b9Swdenk"uImage" will exist which automatically builds an image usable by 515824ee89b9SwdenkU-Boot. Most older kernels also have support for a "pImage" target, 515924ee89b9Swdenkwhich was introduced for our predecessor project PPCBoot and uses a 516024ee89b9Swdenk100% compatible format. 5161c609719bSwdenk 5162c609719bSwdenkExample: 5163c609719bSwdenk 5164c609719bSwdenk make TQM850L_config 5165c609719bSwdenk make oldconfig 5166c609719bSwdenk make dep 516724ee89b9Swdenk make uImage 5168c609719bSwdenk 516924ee89b9SwdenkThe "uImage" build target uses a special tool (in 'tools/mkimage') to 517024ee89b9Swdenkencapsulate a compressed Linux kernel image with header information, 517124ee89b9SwdenkCRC32 checksum etc. for use with U-Boot. This is what we are doing: 5172c609719bSwdenk 517324ee89b9Swdenk* build a standard "vmlinux" kernel image (in ELF binary format): 517424ee89b9Swdenk 517524ee89b9Swdenk* convert the kernel into a raw binary image: 517624ee89b9Swdenk 517724ee89b9Swdenk ${CROSS_COMPILE}-objcopy -O binary \ 517824ee89b9Swdenk -R .note -R .comment \ 517924ee89b9Swdenk -S vmlinux linux.bin 518024ee89b9Swdenk 518124ee89b9Swdenk* compress the binary image: 518224ee89b9Swdenk 518324ee89b9Swdenk gzip -9 linux.bin 518424ee89b9Swdenk 518524ee89b9Swdenk* package compressed binary image for U-Boot: 518624ee89b9Swdenk 518724ee89b9Swdenk mkimage -A ppc -O linux -T kernel -C gzip \ 518824ee89b9Swdenk -a 0 -e 0 -n "Linux Kernel Image" \ 518924ee89b9Swdenk -d linux.bin.gz uImage 519024ee89b9Swdenk 519124ee89b9Swdenk 519224ee89b9SwdenkThe "mkimage" tool can also be used to create ramdisk images for use 519324ee89b9Swdenkwith U-Boot, either separated from the Linux kernel image, or 519424ee89b9Swdenkcombined into one file. "mkimage" encapsulates the images with a 64 519524ee89b9Swdenkbyte header containing information about target architecture, 519624ee89b9Swdenkoperating system, image type, compression method, entry points, time 519724ee89b9Swdenkstamp, CRC32 checksums, etc. 519824ee89b9Swdenk 519924ee89b9Swdenk"mkimage" can be called in two ways: to verify existing images and 520024ee89b9Swdenkprint the header information, or to build new images. 5201c609719bSwdenk 5202c609719bSwdenkIn the first form (with "-l" option) mkimage lists the information 5203c609719bSwdenkcontained in the header of an existing U-Boot image; this includes 5204c609719bSwdenkchecksum verification: 5205c609719bSwdenk 5206c609719bSwdenk tools/mkimage -l image 5207c609719bSwdenk -l ==> list image header information 5208c609719bSwdenk 5209c609719bSwdenkThe second form (with "-d" option) is used to build a U-Boot image 5210c609719bSwdenkfrom a "data file" which is used as image payload: 5211c609719bSwdenk 5212c609719bSwdenk tools/mkimage -A arch -O os -T type -C comp -a addr -e ep \ 5213c609719bSwdenk -n name -d data_file image 5214c609719bSwdenk -A ==> set architecture to 'arch' 5215c609719bSwdenk -O ==> set operating system to 'os' 5216c609719bSwdenk -T ==> set image type to 'type' 5217c609719bSwdenk -C ==> set compression type 'comp' 5218c609719bSwdenk -a ==> set load address to 'addr' (hex) 5219c609719bSwdenk -e ==> set entry point to 'ep' (hex) 5220c609719bSwdenk -n ==> set image name to 'name' 5221c609719bSwdenk -d ==> use image data from 'datafile' 5222c609719bSwdenk 522369459791SwdenkRight now, all Linux kernels for PowerPC systems use the same load 522469459791Swdenkaddress (0x00000000), but the entry point address depends on the 522569459791Swdenkkernel version: 5226c609719bSwdenk 5227c609719bSwdenk- 2.2.x kernels have the entry point at 0x0000000C, 522824ee89b9Swdenk- 2.3.x and later kernels have the entry point at 0x00000000. 5229c609719bSwdenk 5230c609719bSwdenkSo a typical call to build a U-Boot image would read: 5231c609719bSwdenk 523224ee89b9Swdenk -> tools/mkimage -n '2.4.4 kernel for TQM850L' \ 523324ee89b9Swdenk > -A ppc -O linux -T kernel -C gzip -a 0 -e 0 \ 5234a47a12beSStefan Roese > -d /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux.gz \ 523524ee89b9Swdenk > examples/uImage.TQM850L 523624ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5237c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5238c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5239c609719bSwdenk Data Size: 335725 Bytes = 327.86 kB = 0.32 MB 5240c609719bSwdenk Load Address: 0x00000000 524124ee89b9Swdenk Entry Point: 0x00000000 5242c609719bSwdenk 5243c609719bSwdenkTo verify the contents of the image (or check for corruption): 5244c609719bSwdenk 524524ee89b9Swdenk -> tools/mkimage -l examples/uImage.TQM850L 524624ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5247c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5248c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5249c609719bSwdenk Data Size: 335725 Bytes = 327.86 kB = 0.32 MB 5250c609719bSwdenk Load Address: 0x00000000 525124ee89b9Swdenk Entry Point: 0x00000000 5252c609719bSwdenk 5253c609719bSwdenkNOTE: for embedded systems where boot time is critical you can trade 5254c609719bSwdenkspeed for memory and install an UNCOMPRESSED image instead: this 5255c609719bSwdenkneeds more space in Flash, but boots much faster since it does not 5256c609719bSwdenkneed to be uncompressed: 5257c609719bSwdenk 5258a47a12beSStefan Roese -> gunzip /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux.gz 525924ee89b9Swdenk -> tools/mkimage -n '2.4.4 kernel for TQM850L' \ 526024ee89b9Swdenk > -A ppc -O linux -T kernel -C none -a 0 -e 0 \ 5261a47a12beSStefan Roese > -d /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux \ 526224ee89b9Swdenk > examples/uImage.TQM850L-uncompressed 526324ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5264c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5265c609719bSwdenk Image Type: PowerPC Linux Kernel Image (uncompressed) 5266c609719bSwdenk Data Size: 792160 Bytes = 773.59 kB = 0.76 MB 5267c609719bSwdenk Load Address: 0x00000000 526824ee89b9Swdenk Entry Point: 0x00000000 5269c609719bSwdenk 5270c609719bSwdenk 5271c609719bSwdenkSimilar you can build U-Boot images from a 'ramdisk.image.gz' file 5272c609719bSwdenkwhen your kernel is intended to use an initial ramdisk: 5273c609719bSwdenk 5274c609719bSwdenk -> tools/mkimage -n 'Simple Ramdisk Image' \ 5275c609719bSwdenk > -A ppc -O linux -T ramdisk -C gzip \ 5276c609719bSwdenk > -d /LinuxPPC/images/SIMPLE-ramdisk.image.gz examples/simple-initrd 5277c609719bSwdenk Image Name: Simple Ramdisk Image 5278c609719bSwdenk Created: Wed Jan 12 14:01:50 2000 5279c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5280c609719bSwdenk Data Size: 566530 Bytes = 553.25 kB = 0.54 MB 5281c609719bSwdenk Load Address: 0x00000000 5282c609719bSwdenk Entry Point: 0x00000000 5283c609719bSwdenk 5284a804b5ceSGuilherme Maciel FerreiraThe "dumpimage" is a tool to disassemble images built by mkimage. Its "-i" 5285a804b5ceSGuilherme Maciel Ferreiraoption performs the converse operation of the mkimage's second form (the "-d" 5286a804b5ceSGuilherme Maciel Ferreiraoption). Given an image built by mkimage, the dumpimage extracts a "data file" 5287a804b5ceSGuilherme Maciel Ferreirafrom the image: 5288a804b5ceSGuilherme Maciel Ferreira 5289a804b5ceSGuilherme Maciel Ferreira tools/dumpimage -i image -p position data_file 5290a804b5ceSGuilherme Maciel Ferreira -i ==> extract from the 'image' a specific 'data_file', \ 5291a804b5ceSGuilherme Maciel Ferreira indexed by 'position' 5292a804b5ceSGuilherme Maciel Ferreira 5293c609719bSwdenk 5294c609719bSwdenkInstalling a Linux Image: 5295c609719bSwdenk------------------------- 5296c609719bSwdenk 5297c609719bSwdenkTo downloading a U-Boot image over the serial (console) interface, 5298c609719bSwdenkyou must convert the image to S-Record format: 5299c609719bSwdenk 5300c609719bSwdenk objcopy -I binary -O srec examples/image examples/image.srec 5301c609719bSwdenk 5302c609719bSwdenkThe 'objcopy' does not understand the information in the U-Boot 5303c609719bSwdenkimage header, so the resulting S-Record file will be relative to 5304c609719bSwdenkaddress 0x00000000. To load it to a given address, you need to 5305c609719bSwdenkspecify the target address as 'offset' parameter with the 'loads' 5306c609719bSwdenkcommand. 5307c609719bSwdenk 5308c609719bSwdenkExample: install the image to address 0x40100000 (which on the 5309c609719bSwdenkTQM8xxL is in the first Flash bank): 5310c609719bSwdenk 5311c609719bSwdenk => erase 40100000 401FFFFF 5312c609719bSwdenk 5313c609719bSwdenk .......... done 5314c609719bSwdenk Erased 8 sectors 5315c609719bSwdenk 5316c609719bSwdenk => loads 40100000 5317c609719bSwdenk ## Ready for S-Record download ... 5318c609719bSwdenk ~>examples/image.srec 5319c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 12 13 ... 5320c609719bSwdenk ... 5321c609719bSwdenk 15989 15990 15991 15992 5322c609719bSwdenk [file transfer complete] 5323c609719bSwdenk [connected] 5324c609719bSwdenk ## Start Addr = 0x00000000 5325c609719bSwdenk 5326c609719bSwdenk 5327c609719bSwdenkYou can check the success of the download using the 'iminfo' command; 5328c609719bSwdenkthis includes a checksum verification so you can be sure no data 5329c609719bSwdenkcorruption happened: 5330c609719bSwdenk 5331c609719bSwdenk => imi 40100000 5332c609719bSwdenk 5333c609719bSwdenk ## Checking Image at 40100000 ... 5334c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5335c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5336c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5337c609719bSwdenk Load Address: 00000000 5338c609719bSwdenk Entry Point: 0000000c 5339c609719bSwdenk Verifying Checksum ... OK 5340c609719bSwdenk 5341c609719bSwdenk 5342c609719bSwdenkBoot Linux: 5343c609719bSwdenk----------- 5344c609719bSwdenk 5345c609719bSwdenkThe "bootm" command is used to boot an application that is stored in 5346c609719bSwdenkmemory (RAM or Flash). In case of a Linux kernel image, the contents 5347c609719bSwdenkof the "bootargs" environment variable is passed to the kernel as 5348c609719bSwdenkparameters. You can check and modify this variable using the 5349c609719bSwdenk"printenv" and "setenv" commands: 5350c609719bSwdenk 5351c609719bSwdenk 5352c609719bSwdenk => printenv bootargs 5353c609719bSwdenk bootargs=root=/dev/ram 5354c609719bSwdenk 5355c609719bSwdenk => setenv bootargs root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5356c609719bSwdenk 5357c609719bSwdenk => printenv bootargs 5358c609719bSwdenk bootargs=root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5359c609719bSwdenk 5360c609719bSwdenk => bootm 40020000 5361c609719bSwdenk ## Booting Linux kernel at 40020000 ... 5362c609719bSwdenk Image Name: 2.2.13 for NFS on TQM850L 5363c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5364c609719bSwdenk Data Size: 381681 Bytes = 372 kB = 0 MB 5365c609719bSwdenk Load Address: 00000000 5366c609719bSwdenk Entry Point: 0000000c 5367c609719bSwdenk Verifying Checksum ... OK 5368c609719bSwdenk Uncompressing Kernel Image ... OK 5369c609719bSwdenk 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 5370c609719bSwdenk Boot arguments: root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5371c609719bSwdenk time_init: decrementer frequency = 187500000/60 5372c609719bSwdenk Calibrating delay loop... 49.77 BogoMIPS 5373c609719bSwdenk Memory: 15208k available (700k kernel code, 444k data, 32k init) [c0000000,c1000000] 5374c609719bSwdenk ... 5375c609719bSwdenk 537611ccc33fSMarcel ZiswilerIf you want to boot a Linux kernel with initial RAM disk, you pass 53777152b1d0Swdenkthe memory addresses of both the kernel and the initrd image (PPBCOOT 5378c609719bSwdenkformat!) to the "bootm" command: 5379c609719bSwdenk 5380c609719bSwdenk => imi 40100000 40200000 5381c609719bSwdenk 5382c609719bSwdenk ## Checking Image at 40100000 ... 5383c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5384c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5385c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5386c609719bSwdenk Load Address: 00000000 5387c609719bSwdenk Entry Point: 0000000c 5388c609719bSwdenk Verifying Checksum ... OK 5389c609719bSwdenk 5390c609719bSwdenk ## Checking Image at 40200000 ... 5391c609719bSwdenk Image Name: Simple Ramdisk Image 5392c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5393c609719bSwdenk Data Size: 566530 Bytes = 553 kB = 0 MB 5394c609719bSwdenk Load Address: 00000000 5395c609719bSwdenk Entry Point: 00000000 5396c609719bSwdenk Verifying Checksum ... OK 5397c609719bSwdenk 5398c609719bSwdenk => bootm 40100000 40200000 5399c609719bSwdenk ## Booting Linux kernel at 40100000 ... 5400c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5401c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5402c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5403c609719bSwdenk Load Address: 00000000 5404c609719bSwdenk Entry Point: 0000000c 5405c609719bSwdenk Verifying Checksum ... OK 5406c609719bSwdenk Uncompressing Kernel Image ... OK 5407c609719bSwdenk ## Loading RAMDisk Image at 40200000 ... 5408c609719bSwdenk Image Name: Simple Ramdisk Image 5409c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5410c609719bSwdenk Data Size: 566530 Bytes = 553 kB = 0 MB 5411c609719bSwdenk Load Address: 00000000 5412c609719bSwdenk Entry Point: 00000000 5413c609719bSwdenk Verifying Checksum ... OK 5414c609719bSwdenk Loading Ramdisk ... OK 5415c609719bSwdenk 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 5416c609719bSwdenk Boot arguments: root=/dev/ram 5417c609719bSwdenk time_init: decrementer frequency = 187500000/60 5418c609719bSwdenk Calibrating delay loop... 49.77 BogoMIPS 5419c609719bSwdenk ... 5420c609719bSwdenk RAMDISK: Compressed image found at block 0 5421c609719bSwdenk VFS: Mounted root (ext2 filesystem). 5422c609719bSwdenk 5423c609719bSwdenk bash# 5424c609719bSwdenk 54250267768eSMatthew McClintockBoot Linux and pass a flat device tree: 54260267768eSMatthew McClintock----------- 54270267768eSMatthew McClintock 54280267768eSMatthew McClintockFirst, U-Boot must be compiled with the appropriate defines. See the section 54290267768eSMatthew McClintocktitled "Linux Kernel Interface" above for a more in depth explanation. The 54300267768eSMatthew McClintockfollowing is an example of how to start a kernel and pass an updated 54310267768eSMatthew McClintockflat device tree: 54320267768eSMatthew McClintock 54330267768eSMatthew McClintock=> print oftaddr 54340267768eSMatthew McClintockoftaddr=0x300000 54350267768eSMatthew McClintock=> print oft 54360267768eSMatthew McClintockoft=oftrees/mpc8540ads.dtb 54370267768eSMatthew McClintock=> tftp $oftaddr $oft 54380267768eSMatthew McClintockSpeed: 1000, full duplex 54390267768eSMatthew McClintockUsing TSEC0 device 54400267768eSMatthew McClintockTFTP from server 192.168.1.1; our IP address is 192.168.1.101 54410267768eSMatthew McClintockFilename 'oftrees/mpc8540ads.dtb'. 54420267768eSMatthew McClintockLoad address: 0x300000 54430267768eSMatthew McClintockLoading: # 54440267768eSMatthew McClintockdone 54450267768eSMatthew McClintockBytes transferred = 4106 (100a hex) 54460267768eSMatthew McClintock=> tftp $loadaddr $bootfile 54470267768eSMatthew McClintockSpeed: 1000, full duplex 54480267768eSMatthew McClintockUsing TSEC0 device 54490267768eSMatthew McClintockTFTP from server 192.168.1.1; our IP address is 192.168.1.2 54500267768eSMatthew McClintockFilename 'uImage'. 54510267768eSMatthew McClintockLoad address: 0x200000 54520267768eSMatthew McClintockLoading:############ 54530267768eSMatthew McClintockdone 54540267768eSMatthew McClintockBytes transferred = 1029407 (fb51f hex) 54550267768eSMatthew McClintock=> print loadaddr 54560267768eSMatthew McClintockloadaddr=200000 54570267768eSMatthew McClintock=> print oftaddr 54580267768eSMatthew McClintockoftaddr=0x300000 54590267768eSMatthew McClintock=> bootm $loadaddr - $oftaddr 54600267768eSMatthew McClintock## Booting image at 00200000 ... 54610267768eSMatthew McClintock Image Name: Linux-2.6.17-dirty 54620267768eSMatthew McClintock Image Type: PowerPC Linux Kernel Image (gzip compressed) 54630267768eSMatthew McClintock Data Size: 1029343 Bytes = 1005.2 kB 54640267768eSMatthew McClintock Load Address: 00000000 54650267768eSMatthew McClintock Entry Point: 00000000 54660267768eSMatthew McClintock Verifying Checksum ... OK 54670267768eSMatthew McClintock Uncompressing Kernel Image ... OK 54680267768eSMatthew McClintockBooting using flat device tree at 0x300000 54690267768eSMatthew McClintockUsing MPC85xx ADS machine description 54700267768eSMatthew McClintockMemory CAM mapping: CAM0=256Mb, CAM1=256Mb, CAM2=0Mb residual: 0Mb 54710267768eSMatthew McClintock[snip] 54720267768eSMatthew McClintock 54730267768eSMatthew McClintock 54746069ff26SwdenkMore About U-Boot Image Types: 54756069ff26Swdenk------------------------------ 54766069ff26Swdenk 54776069ff26SwdenkU-Boot supports the following image types: 54786069ff26Swdenk 54796069ff26Swdenk "Standalone Programs" are directly runnable in the environment 54806069ff26Swdenk provided by U-Boot; it is expected that (if they behave 54816069ff26Swdenk well) you can continue to work in U-Boot after return from 54826069ff26Swdenk the Standalone Program. 54836069ff26Swdenk "OS Kernel Images" are usually images of some Embedded OS which 54846069ff26Swdenk will take over control completely. Usually these programs 54856069ff26Swdenk will install their own set of exception handlers, device 54866069ff26Swdenk drivers, set up the MMU, etc. - this means, that you cannot 54876069ff26Swdenk expect to re-enter U-Boot except by resetting the CPU. 54886069ff26Swdenk "RAMDisk Images" are more or less just data blocks, and their 54896069ff26Swdenk parameters (address, size) are passed to an OS kernel that is 54906069ff26Swdenk being started. 54916069ff26Swdenk "Multi-File Images" contain several images, typically an OS 54926069ff26Swdenk (Linux) kernel image and one or more data images like 54936069ff26Swdenk RAMDisks. This construct is useful for instance when you want 54946069ff26Swdenk to boot over the network using BOOTP etc., where the boot 54956069ff26Swdenk server provides just a single image file, but you want to get 54966069ff26Swdenk for instance an OS kernel and a RAMDisk image. 54976069ff26Swdenk 54986069ff26Swdenk "Multi-File Images" start with a list of image sizes, each 54996069ff26Swdenk image size (in bytes) specified by an "uint32_t" in network 55006069ff26Swdenk byte order. This list is terminated by an "(uint32_t)0". 55016069ff26Swdenk Immediately after the terminating 0 follow the images, one by 55026069ff26Swdenk one, all aligned on "uint32_t" boundaries (size rounded up to 55036069ff26Swdenk a multiple of 4 bytes). 55046069ff26Swdenk 55056069ff26Swdenk "Firmware Images" are binary images containing firmware (like 55066069ff26Swdenk U-Boot or FPGA images) which usually will be programmed to 55076069ff26Swdenk flash memory. 55086069ff26Swdenk 55096069ff26Swdenk "Script files" are command sequences that will be executed by 55106069ff26Swdenk U-Boot's command interpreter; this feature is especially 55116069ff26Swdenk useful when you configure U-Boot to use a real shell (hush) 55126069ff26Swdenk as command interpreter. 55136069ff26Swdenk 551444f074c7SMarek VasutBooting the Linux zImage: 551544f074c7SMarek Vasut------------------------- 551644f074c7SMarek Vasut 551744f074c7SMarek VasutOn some platforms, it's possible to boot Linux zImage. This is done 551844f074c7SMarek Vasutusing the "bootz" command. The syntax of "bootz" command is the same 551944f074c7SMarek Vasutas the syntax of "bootm" command. 552044f074c7SMarek Vasut 55218ac28563STom RiniNote, defining the CONFIG_SUPPORT_RAW_INITRD allows user to supply 5522017e1f3fSMarek Vasutkernel with raw initrd images. The syntax is slightly different, the 5523017e1f3fSMarek Vasutaddress of the initrd must be augmented by it's size, in the following 5524017e1f3fSMarek Vasutformat: "<initrd addres>:<initrd size>". 5525017e1f3fSMarek Vasut 5526c609719bSwdenk 5527c609719bSwdenkStandalone HOWTO: 5528c609719bSwdenk================= 5529c609719bSwdenk 5530c609719bSwdenkOne of the features of U-Boot is that you can dynamically load and 5531c609719bSwdenkrun "standalone" applications, which can use some resources of 5532c609719bSwdenkU-Boot like console I/O functions or interrupt services. 5533c609719bSwdenk 5534c609719bSwdenkTwo simple examples are included with the sources: 5535c609719bSwdenk 5536c609719bSwdenk"Hello World" Demo: 5537c609719bSwdenk------------------- 5538c609719bSwdenk 5539c609719bSwdenk'examples/hello_world.c' contains a small "Hello World" Demo 5540c609719bSwdenkapplication; it is automatically compiled when you build U-Boot. 5541c609719bSwdenkIt's configured to run at address 0x00040004, so you can play with it 5542c609719bSwdenklike that: 5543c609719bSwdenk 5544c609719bSwdenk => loads 5545c609719bSwdenk ## Ready for S-Record download ... 5546c609719bSwdenk ~>examples/hello_world.srec 5547c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 ... 5548c609719bSwdenk [file transfer complete] 5549c609719bSwdenk [connected] 5550c609719bSwdenk ## Start Addr = 0x00040004 5551c609719bSwdenk 5552c609719bSwdenk => go 40004 Hello World! This is a test. 5553c609719bSwdenk ## Starting application at 0x00040004 ... 5554c609719bSwdenk Hello World 5555c609719bSwdenk argc = 7 5556c609719bSwdenk argv[0] = "40004" 5557c609719bSwdenk argv[1] = "Hello" 5558c609719bSwdenk argv[2] = "World!" 5559c609719bSwdenk argv[3] = "This" 5560c609719bSwdenk argv[4] = "is" 5561c609719bSwdenk argv[5] = "a" 5562c609719bSwdenk argv[6] = "test." 5563c609719bSwdenk argv[7] = "<NULL>" 5564c609719bSwdenk Hit any key to exit ... 5565c609719bSwdenk 5566c609719bSwdenk ## Application terminated, rc = 0x0 5567c609719bSwdenk 5568c609719bSwdenkAnother example, which demonstrates how to register a CPM interrupt 5569c609719bSwdenkhandler with the U-Boot code, can be found in 'examples/timer.c'. 5570c609719bSwdenkHere, a CPM timer is set up to generate an interrupt every second. 5571c609719bSwdenkThe interrupt service routine is trivial, just printing a '.' 5572c609719bSwdenkcharacter, but this is just a demo program. The application can be 5573c609719bSwdenkcontrolled by the following keys: 5574c609719bSwdenk 5575c609719bSwdenk ? - print current values og the CPM Timer registers 5576c609719bSwdenk b - enable interrupts and start timer 5577c609719bSwdenk e - stop timer and disable interrupts 5578c609719bSwdenk q - quit application 5579c609719bSwdenk 5580c609719bSwdenk => loads 5581c609719bSwdenk ## Ready for S-Record download ... 5582c609719bSwdenk ~>examples/timer.srec 5583c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 ... 5584c609719bSwdenk [file transfer complete] 5585c609719bSwdenk [connected] 5586c609719bSwdenk ## Start Addr = 0x00040004 5587c609719bSwdenk 5588c609719bSwdenk => go 40004 5589c609719bSwdenk ## Starting application at 0x00040004 ... 5590c609719bSwdenk TIMERS=0xfff00980 5591c609719bSwdenk Using timer 1 5592c609719bSwdenk tgcr @ 0xfff00980, tmr @ 0xfff00990, trr @ 0xfff00994, tcr @ 0xfff00998, tcn @ 0xfff0099c, ter @ 0xfff009b0 5593c609719bSwdenk 5594c609719bSwdenkHit 'b': 5595c609719bSwdenk [q, b, e, ?] Set interval 1000000 us 5596c609719bSwdenk Enabling timer 5597c609719bSwdenkHit '?': 5598c609719bSwdenk [q, b, e, ?] ........ 5599c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0xef6, ter=0x0 5600c609719bSwdenkHit '?': 5601c609719bSwdenk [q, b, e, ?] . 5602c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x2ad4, ter=0x0 5603c609719bSwdenkHit '?': 5604c609719bSwdenk [q, b, e, ?] . 5605c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x1efc, ter=0x0 5606c609719bSwdenkHit '?': 5607c609719bSwdenk [q, b, e, ?] . 5608c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x169d, ter=0x0 5609c609719bSwdenkHit 'e': 5610c609719bSwdenk [q, b, e, ?] ...Stopping timer 5611c609719bSwdenkHit 'q': 5612c609719bSwdenk [q, b, e, ?] ## Application terminated, rc = 0x0 5613c609719bSwdenk 5614c609719bSwdenk 561585ec0bccSwdenkMinicom warning: 561685ec0bccSwdenk================ 561785ec0bccSwdenk 56187152b1d0SwdenkOver time, many people have reported problems when trying to use the 561985ec0bccSwdenk"minicom" terminal emulation program for serial download. I (wd) 562085ec0bccSwdenkconsider minicom to be broken, and recommend not to use it. Under 5621f07771ccSwdenkUnix, I recommend to use C-Kermit for general purpose use (and 562285ec0bccSwdenkespecially for kermit binary protocol download ("loadb" command), and 5623e53515a2SKarl O. Pincuse "cu" for S-Record download ("loads" command). See 5624e53515a2SKarl O. Pinchttp://www.denx.de/wiki/view/DULG/SystemSetup#Section_4.3. 5625e53515a2SKarl O. Pincfor help with kermit. 5626e53515a2SKarl O. Pinc 562785ec0bccSwdenk 562852f52c14SwdenkNevertheless, if you absolutely want to use it try adding this 562952f52c14Swdenkconfiguration to your "File transfer protocols" section: 563052f52c14Swdenk 563152f52c14Swdenk Name Program Name U/D FullScr IO-Red. Multi 563252f52c14Swdenk X kermit /usr/bin/kermit -i -l %l -s Y U Y N N 563352f52c14Swdenk Y kermit /usr/bin/kermit -i -l %l -r N D Y N N 563452f52c14Swdenk 563552f52c14Swdenk 5636c609719bSwdenkNetBSD Notes: 5637c609719bSwdenk============= 5638c609719bSwdenk 5639c609719bSwdenkStarting at version 0.9.2, U-Boot supports NetBSD both as host 5640c609719bSwdenk(build U-Boot) and target system (boots NetBSD/mpc8xx). 5641c609719bSwdenk 5642c609719bSwdenkBuilding requires a cross environment; it is known to work on 5643c609719bSwdenkNetBSD/i386 with the cross-powerpc-netbsd-1.3 package (you will also 5644c609719bSwdenkneed gmake since the Makefiles are not compatible with BSD make). 5645c609719bSwdenkNote that the cross-powerpc package does not install include files; 5646c609719bSwdenkattempting to build U-Boot will fail because <machine/ansi.h> is 5647c609719bSwdenkmissing. This file has to be installed and patched manually: 5648c609719bSwdenk 5649c609719bSwdenk # cd /usr/pkg/cross/powerpc-netbsd/include 5650c609719bSwdenk # mkdir powerpc 5651c609719bSwdenk # ln -s powerpc machine 5652c609719bSwdenk # cp /usr/src/sys/arch/powerpc/include/ansi.h powerpc/ansi.h 5653c609719bSwdenk # ${EDIT} powerpc/ansi.h ## must remove __va_list, _BSD_VA_LIST 5654c609719bSwdenk 5655c609719bSwdenkNative builds *don't* work due to incompatibilities between native 5656c609719bSwdenkand U-Boot include files. 5657c609719bSwdenk 5658c609719bSwdenkBooting assumes that (the first part of) the image booted is a 5659c609719bSwdenkstage-2 loader which in turn loads and then invokes the kernel 5660c609719bSwdenkproper. Loader sources will eventually appear in the NetBSD source 5661c609719bSwdenktree (probably in sys/arc/mpc8xx/stand/u-boot_stage2/); in the 56622a8af187Swdenkmeantime, see ftp://ftp.denx.de/pub/u-boot/ppcboot_stage2.tar.gz 5663c609719bSwdenk 5664c609719bSwdenk 5665c609719bSwdenkImplementation Internals: 5666c609719bSwdenk========================= 5667c609719bSwdenk 5668c609719bSwdenkThe following is not intended to be a complete description of every 5669c609719bSwdenkimplementation detail. However, it should help to understand the 5670c609719bSwdenkinner workings of U-Boot and make it easier to port it to custom 5671c609719bSwdenkhardware. 5672c609719bSwdenk 5673c609719bSwdenk 5674c609719bSwdenkInitial Stack, Global Data: 5675c609719bSwdenk--------------------------- 5676c609719bSwdenk 5677c609719bSwdenkThe implementation of U-Boot is complicated by the fact that U-Boot 5678c609719bSwdenkstarts running out of ROM (flash memory), usually without access to 5679c609719bSwdenksystem RAM (because the memory controller is not initialized yet). 5680c609719bSwdenkThis means that we don't have writable Data or BSS segments, and BSS 5681c609719bSwdenkis not initialized as zero. To be able to get a C environment working 5682c609719bSwdenkat all, we have to allocate at least a minimal stack. Implementation 5683c609719bSwdenkoptions for this are defined and restricted by the CPU used: Some CPU 5684c609719bSwdenkmodels provide on-chip memory (like the IMMR area on MPC8xx and 5685c609719bSwdenkMPC826x processors), on others (parts of) the data cache can be 5686c609719bSwdenklocked as (mis-) used as memory, etc. 5687c609719bSwdenk 56887152b1d0Swdenk Chris Hallinan posted a good summary of these issues to the 56890668236bSWolfgang Denk U-Boot mailing list: 569043d9616cSwdenk 569143d9616cSwdenk Subject: RE: [U-Boot-Users] RE: More On Memory Bank x (nothingness)? 569243d9616cSwdenk From: "Chris Hallinan" <clh@net1plus.com> 569343d9616cSwdenk Date: Mon, 10 Feb 2003 16:43:46 -0500 (22:43 MET) 569443d9616cSwdenk ... 569543d9616cSwdenk 569643d9616cSwdenk Correct me if I'm wrong, folks, but the way I understand it 569743d9616cSwdenk is this: Using DCACHE as initial RAM for Stack, etc, does not 569843d9616cSwdenk require any physical RAM backing up the cache. The cleverness 569943d9616cSwdenk is that the cache is being used as a temporary supply of 570043d9616cSwdenk necessary storage before the SDRAM controller is setup. It's 570111ccc33fSMarcel Ziswiler beyond the scope of this list to explain the details, but you 570243d9616cSwdenk can see how this works by studying the cache architecture and 570343d9616cSwdenk operation in the architecture and processor-specific manuals. 570443d9616cSwdenk 570543d9616cSwdenk OCM is On Chip Memory, which I believe the 405GP has 4K. It 570643d9616cSwdenk is another option for the system designer to use as an 570711ccc33fSMarcel Ziswiler initial stack/RAM area prior to SDRAM being available. Either 570843d9616cSwdenk option should work for you. Using CS 4 should be fine if your 570943d9616cSwdenk board designers haven't used it for something that would 571043d9616cSwdenk cause you grief during the initial boot! It is frequently not 571143d9616cSwdenk used. 571243d9616cSwdenk 57136d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_RAM_ADDR should be somewhere that won't interfere 571443d9616cSwdenk with your processor/board/system design. The default value 571543d9616cSwdenk you will find in any recent u-boot distribution in 57168a316c9bSStefan Roese walnut.h should work for you. I'd set it to a value larger 571743d9616cSwdenk than your SDRAM module. If you have a 64MB SDRAM module, set 571843d9616cSwdenk it above 400_0000. Just make sure your board has no resources 571943d9616cSwdenk that are supposed to respond to that address! That code in 572043d9616cSwdenk start.S has been around a while and should work as is when 572143d9616cSwdenk you get the config right. 572243d9616cSwdenk 572343d9616cSwdenk -Chris Hallinan 572443d9616cSwdenk DS4.COM, Inc. 572543d9616cSwdenk 5726c609719bSwdenkIt is essential to remember this, since it has some impact on the C 5727c609719bSwdenkcode for the initialization procedures: 5728c609719bSwdenk 5729c609719bSwdenk* Initialized global data (data segment) is read-only. Do not attempt 5730c609719bSwdenk to write it. 5731c609719bSwdenk 573211ccc33fSMarcel Ziswiler* Do not use any uninitialized global data (or implicitely initialized 5733c609719bSwdenk as zero data - BSS segment) at all - this is undefined, initiali- 57347152b1d0Swdenk zation is performed later (when relocating to RAM). 5735c609719bSwdenk 5736c609719bSwdenk* Stack space is very limited. Avoid big data buffers or things like 5737c609719bSwdenk that. 5738c609719bSwdenk 5739c609719bSwdenkHaving only the stack as writable memory limits means we cannot use 5740c609719bSwdenknormal global data to share information beween the code. But it 5741c609719bSwdenkturned out that the implementation of U-Boot can be greatly 5742c609719bSwdenksimplified by making a global data structure (gd_t) available to all 5743c609719bSwdenkfunctions. We could pass a pointer to this data as argument to _all_ 5744c609719bSwdenkfunctions, but this would bloat the code. Instead we use a feature of 5745c609719bSwdenkthe GCC compiler (Global Register Variables) to share the data: we 5746c609719bSwdenkplace a pointer (gd) to the global data into a register which we 5747c609719bSwdenkreserve for this purpose. 5748c609719bSwdenk 57497152b1d0SwdenkWhen choosing a register for such a purpose we are restricted by the 5750c609719bSwdenkrelevant (E)ABI specifications for the current architecture, and by 5751c609719bSwdenkGCC's implementation. 5752c609719bSwdenk 5753c609719bSwdenkFor PowerPC, the following registers have specific use: 5754c609719bSwdenk R1: stack pointer 5755e7670f6cSWolfgang Denk R2: reserved for system use 5756c609719bSwdenk R3-R4: parameter passing and return values 5757c609719bSwdenk R5-R10: parameter passing 5758c609719bSwdenk R13: small data area pointer 5759c609719bSwdenk R30: GOT pointer 5760c609719bSwdenk R31: frame pointer 5761c609719bSwdenk 5762e6bee808SJoakim Tjernlund (U-Boot also uses R12 as internal GOT pointer. r12 5763e6bee808SJoakim Tjernlund is a volatile register so r12 needs to be reset when 5764e6bee808SJoakim Tjernlund going back and forth between asm and C) 5765c609719bSwdenk 5766e7670f6cSWolfgang Denk ==> U-Boot will use R2 to hold a pointer to the global data 5767c609719bSwdenk 5768c609719bSwdenk Note: on PPC, we could use a static initializer (since the 5769c609719bSwdenk address of the global data structure is known at compile time), 5770c609719bSwdenk but it turned out that reserving a register results in somewhat 5771c609719bSwdenk smaller code - although the code savings are not that big (on 5772c609719bSwdenk average for all boards 752 bytes for the whole U-Boot image, 5773c609719bSwdenk 624 text + 127 data). 5774c609719bSwdenk 5775c4db335cSRobin GetzOn Blackfin, the normal C ABI (except for P3) is followed as documented here: 57764c58eb55SMike Frysinger http://docs.blackfin.uclinux.org/doku.php?id=application_binary_interface 57774c58eb55SMike Frysinger 5778c4db335cSRobin Getz ==> U-Boot will use P3 to hold a pointer to the global data 57794c58eb55SMike Frysinger 5780c609719bSwdenkOn ARM, the following registers are used: 5781c609719bSwdenk 5782c609719bSwdenk R0: function argument word/integer result 5783c609719bSwdenk R1-R3: function argument word 578412eba1b4SJeroen Hofstee R9: platform specific 578512eba1b4SJeroen Hofstee R10: stack limit (used only if stack checking is enabled) 5786c609719bSwdenk R11: argument (frame) pointer 5787c609719bSwdenk R12: temporary workspace 5788c609719bSwdenk R13: stack pointer 5789c609719bSwdenk R14: link register 5790c609719bSwdenk R15: program counter 5791c609719bSwdenk 579212eba1b4SJeroen Hofstee ==> U-Boot will use R9 to hold a pointer to the global data 579312eba1b4SJeroen Hofstee 579412eba1b4SJeroen Hofstee Note: on ARM, only R_ARM_RELATIVE relocations are supported. 5795c609719bSwdenk 57960df01fd3SThomas ChouOn Nios II, the ABI is documented here: 57970df01fd3SThomas Chou http://www.altera.com/literature/hb/nios2/n2cpu_nii51016.pdf 57980df01fd3SThomas Chou 57990df01fd3SThomas Chou ==> U-Boot will use gp to hold a pointer to the global data 58000df01fd3SThomas Chou 58010df01fd3SThomas Chou Note: on Nios II, we give "-G0" option to gcc and don't use gp 58020df01fd3SThomas Chou to access small data sections, so gp is free. 58030df01fd3SThomas Chou 5804afc1ce82SMacpaul LinOn NDS32, the following registers are used: 5805afc1ce82SMacpaul Lin 5806afc1ce82SMacpaul Lin R0-R1: argument/return 5807afc1ce82SMacpaul Lin R2-R5: argument 5808afc1ce82SMacpaul Lin R15: temporary register for assembler 5809afc1ce82SMacpaul Lin R16: trampoline register 5810afc1ce82SMacpaul Lin R28: frame pointer (FP) 5811afc1ce82SMacpaul Lin R29: global pointer (GP) 5812afc1ce82SMacpaul Lin R30: link register (LP) 5813afc1ce82SMacpaul Lin R31: stack pointer (SP) 5814afc1ce82SMacpaul Lin PC: program counter (PC) 5815afc1ce82SMacpaul Lin 5816afc1ce82SMacpaul Lin ==> U-Boot will use R10 to hold a pointer to the global data 5817afc1ce82SMacpaul Lin 5818d87080b7SWolfgang DenkNOTE: DECLARE_GLOBAL_DATA_PTR must be used with file-global scope, 5819d87080b7SWolfgang Denkor current versions of GCC may "optimize" the code too much. 5820c609719bSwdenk 5821c609719bSwdenkMemory Management: 5822c609719bSwdenk------------------ 5823c609719bSwdenk 5824c609719bSwdenkU-Boot runs in system state and uses physical addresses, i.e. the 5825c609719bSwdenkMMU is not used either for address mapping nor for memory protection. 5826c609719bSwdenk 5827c609719bSwdenkThe available memory is mapped to fixed addresses using the memory 5828c609719bSwdenkcontroller. In this process, a contiguous block is formed for each 5829c609719bSwdenkmemory type (Flash, SDRAM, SRAM), even when it consists of several 5830c609719bSwdenkphysical memory banks. 5831c609719bSwdenk 5832c609719bSwdenkU-Boot is installed in the first 128 kB of the first Flash bank (on 5833c609719bSwdenkTQM8xxL modules this is the range 0x40000000 ... 0x4001FFFF). After 5834c609719bSwdenkbooting and sizing and initializing DRAM, the code relocates itself 5835c609719bSwdenkto the upper end of DRAM. Immediately below the U-Boot code some 58366d0f6bcfSJean-Christophe PLAGNIOL-VILLARDmemory is reserved for use by malloc() [see CONFIG_SYS_MALLOC_LEN 5837c609719bSwdenkconfiguration setting]. Below that, a structure with global Board 5838c609719bSwdenkInfo data is placed, followed by the stack (growing downward). 5839c609719bSwdenk 5840c609719bSwdenkAdditionally, some exception handler code is copied to the low 8 kB 5841c609719bSwdenkof DRAM (0x00000000 ... 0x00001FFF). 5842c609719bSwdenk 5843c609719bSwdenkSo a typical memory configuration with 16 MB of DRAM could look like 5844c609719bSwdenkthis: 5845c609719bSwdenk 5846c609719bSwdenk 0x0000 0000 Exception Vector code 5847c609719bSwdenk : 5848c609719bSwdenk 0x0000 1FFF 5849c609719bSwdenk 0x0000 2000 Free for Application Use 5850c609719bSwdenk : 5851c609719bSwdenk : 5852c609719bSwdenk 5853c609719bSwdenk : 5854c609719bSwdenk : 5855c609719bSwdenk 0x00FB FF20 Monitor Stack (Growing downward) 5856c609719bSwdenk 0x00FB FFAC Board Info Data and permanent copy of global data 5857c609719bSwdenk 0x00FC 0000 Malloc Arena 5858c609719bSwdenk : 5859c609719bSwdenk 0x00FD FFFF 5860c609719bSwdenk 0x00FE 0000 RAM Copy of Monitor Code 5861c609719bSwdenk ... eventually: LCD or video framebuffer 5862c609719bSwdenk ... eventually: pRAM (Protected RAM - unchanged by reset) 5863c609719bSwdenk 0x00FF FFFF [End of RAM] 5864c609719bSwdenk 5865c609719bSwdenk 5866c609719bSwdenkSystem Initialization: 5867c609719bSwdenk---------------------- 5868c609719bSwdenk 5869c609719bSwdenkIn the reset configuration, U-Boot starts at the reset entry point 587011ccc33fSMarcel Ziswiler(on most PowerPC systems at address 0x00000100). Because of the reset 5871c609719bSwdenkconfiguration for CS0# this is a mirror of the onboard Flash memory. 58727152b1d0SwdenkTo be able to re-map memory U-Boot then jumps to its link address. 5873c609719bSwdenkTo be able to implement the initialization code in C, a (small!) 5874c609719bSwdenkinitial stack is set up in the internal Dual Ported RAM (in case CPUs 5875c609719bSwdenkwhich provide such a feature like MPC8xx or MPC8260), or in a locked 5876c609719bSwdenkpart of the data cache. After that, U-Boot initializes the CPU core, 5877c609719bSwdenkthe caches and the SIU. 5878c609719bSwdenk 5879c609719bSwdenkNext, all (potentially) available memory banks are mapped using a 5880c609719bSwdenkpreliminary mapping. For example, we put them on 512 MB boundaries 5881c609719bSwdenk(multiples of 0x20000000: SDRAM on 0x00000000 and 0x20000000, Flash 5882c609719bSwdenkon 0x40000000 and 0x60000000, SRAM on 0x80000000). Then UPM A is 5883c609719bSwdenkprogrammed for SDRAM access. Using the temporary configuration, a 5884c609719bSwdenksimple memory test is run that determines the size of the SDRAM 5885c609719bSwdenkbanks. 5886c609719bSwdenk 5887c609719bSwdenkWhen there is more than one SDRAM bank, and the banks are of 58887152b1d0Swdenkdifferent size, the largest is mapped first. For equal size, the first 5889c609719bSwdenkbank (CS2#) is mapped first. The first mapping is always for address 5890c609719bSwdenk0x00000000, with any additional banks following immediately to create 5891c609719bSwdenkcontiguous memory starting from 0. 5892c609719bSwdenk 5893c609719bSwdenkThen, the monitor installs itself at the upper end of the SDRAM area 5894c609719bSwdenkand allocates memory for use by malloc() and for the global Board 5895c609719bSwdenkInfo data; also, the exception vector code is copied to the low RAM 5896c609719bSwdenkpages, and the final stack is set up. 5897c609719bSwdenk 5898c609719bSwdenkOnly after this relocation will you have a "normal" C environment; 5899c609719bSwdenkuntil that you are restricted in several ways, mostly because you are 5900c609719bSwdenkrunning from ROM, and because the code will have to be relocated to a 5901c609719bSwdenknew address in RAM. 5902c609719bSwdenk 5903c609719bSwdenk 5904c609719bSwdenkU-Boot Porting Guide: 5905c609719bSwdenk---------------------- 5906c609719bSwdenk 5907c609719bSwdenk[Based on messages by Jerry Van Baren in the U-Boot-Users mailing 59086aff3115Swdenklist, October 2002] 5909c609719bSwdenk 5910c609719bSwdenk 5911c609719bSwdenkint main(int argc, char *argv[]) 5912c609719bSwdenk{ 5913c609719bSwdenk sighandler_t no_more_time; 5914c609719bSwdenk 5915c609719bSwdenk signal(SIGALRM, no_more_time); 5916c609719bSwdenk alarm(PROJECT_DEADLINE - toSec (3 * WEEK)); 5917c609719bSwdenk 5918c609719bSwdenk if (available_money > available_manpower) { 59196c3fef28SJerry Van Baren Pay consultant to port U-Boot; 5920c609719bSwdenk return 0; 5921c609719bSwdenk } 5922c609719bSwdenk 5923c609719bSwdenk Download latest U-Boot source; 5924c609719bSwdenk 59250668236bSWolfgang Denk Subscribe to u-boot mailing list; 59266aff3115Swdenk 59276c3fef28SJerry Van Baren if (clueless) 5928c609719bSwdenk email("Hi, I am new to U-Boot, how do I get started?"); 5929c609719bSwdenk 5930c609719bSwdenk while (learning) { 5931c609719bSwdenk Read the README file in the top level directory; 59327cb22f97Swdenk Read http://www.denx.de/twiki/bin/view/DULG/Manual; 59336c3fef28SJerry Van Baren Read applicable doc/*.README; 5934c609719bSwdenk Read the source, Luke; 59356c3fef28SJerry Van Baren /* find . -name "*.[chS]" | xargs grep -i <keyword> */ 5936c609719bSwdenk } 5937c609719bSwdenk 59386c3fef28SJerry Van Baren if (available_money > toLocalCurrency ($2500)) 59396c3fef28SJerry Van Baren Buy a BDI3000; 59406c3fef28SJerry Van Baren else 5941c609719bSwdenk Add a lot of aggravation and time; 5942c609719bSwdenk 59436c3fef28SJerry Van Baren if (a similar board exists) { /* hopefully... */ 59446c3fef28SJerry Van Baren cp -a board/<similar> board/<myboard> 59456c3fef28SJerry Van Baren cp include/configs/<similar>.h include/configs/<myboard>.h 59466c3fef28SJerry Van Baren } else { 5947c609719bSwdenk Create your own board support subdirectory; 59486c3fef28SJerry Van Baren Create your own board include/configs/<myboard>.h file; 59496c3fef28SJerry Van Baren } 59506c3fef28SJerry Van Baren Edit new board/<myboard> files 59516c3fef28SJerry Van Baren Edit new include/configs/<myboard>.h 5952c609719bSwdenk 59536c3fef28SJerry Van Baren while (!accepted) { 5954c609719bSwdenk while (!running) { 5955c609719bSwdenk do { 5956c609719bSwdenk Add / modify source code; 5957c609719bSwdenk } until (compiles); 5958c609719bSwdenk Debug; 5959c609719bSwdenk if (clueless) 5960c609719bSwdenk email("Hi, I am having problems..."); 5961c609719bSwdenk } 59626c3fef28SJerry Van Baren Send patch file to the U-Boot email list; 59636c3fef28SJerry Van Baren if (reasonable critiques) 59646c3fef28SJerry Van Baren Incorporate improvements from email list code review; 59656c3fef28SJerry Van Baren else 59666c3fef28SJerry Van Baren Defend code as written; 59676c3fef28SJerry Van Baren } 5968c609719bSwdenk 5969c609719bSwdenk return 0; 5970c609719bSwdenk} 5971c609719bSwdenk 5972c609719bSwdenkvoid no_more_time (int sig) 5973c609719bSwdenk{ 5974c609719bSwdenk hire_a_guru(); 5975c609719bSwdenk} 5976c609719bSwdenk 5977c609719bSwdenk 5978c609719bSwdenkCoding Standards: 5979c609719bSwdenk----------------- 5980c609719bSwdenk 5981c609719bSwdenkAll contributions to U-Boot should conform to the Linux kernel 59822c051651SDetlev Zundelcoding style; see the file "Documentation/CodingStyle" and the script 59837ca9296eSWolfgang Denk"scripts/Lindent" in your Linux kernel source directory. 5984c609719bSwdenk 59852c051651SDetlev ZundelSource files originating from a different project (for example the 59862c051651SDetlev ZundelMTD subsystem) are generally exempt from these guidelines and are not 59872c051651SDetlev Zundelreformated to ease subsequent migration to newer versions of those 59882c051651SDetlev Zundelsources. 59892c051651SDetlev Zundel 59902c051651SDetlev ZundelPlease note that U-Boot is implemented in C (and to some small parts in 59912c051651SDetlev ZundelAssembler); no C++ is used, so please do not use C++ style comments (//) 59922c051651SDetlev Zundelin your code. 5993c609719bSwdenk 5994c178d3daSwdenkPlease also stick to the following formatting rules: 5995180d3f74Swdenk- remove any trailing white space 59967ca9296eSWolfgang Denk- use TAB characters for indentation and vertical alignment, not spaces 5997180d3f74Swdenk- make sure NOT to use DOS '\r\n' line feeds 59987ca9296eSWolfgang Denk- do not add more than 2 consecutive empty lines to source files 5999180d3f74Swdenk- do not add trailing empty lines to source files 6000180d3f74Swdenk 6001c609719bSwdenkSubmissions which do not conform to the standards may be returned 6002c609719bSwdenkwith a request to reformat the changes. 6003c609719bSwdenk 6004c609719bSwdenk 6005c609719bSwdenkSubmitting Patches: 6006c609719bSwdenk------------------- 6007c609719bSwdenk 6008c609719bSwdenkSince the number of patches for U-Boot is growing, we need to 6009c609719bSwdenkestablish some rules. Submissions which do not conform to these rules 6010c609719bSwdenkmay be rejected, even when they contain important and valuable stuff. 6011c609719bSwdenk 60120d28f34bSMagnus LiljaPlease see http://www.denx.de/wiki/U-Boot/Patches for details. 6013218ca724SWolfgang Denk 60140668236bSWolfgang DenkPatches shall be sent to the u-boot mailing list <u-boot@lists.denx.de>; 60150668236bSWolfgang Denksee http://lists.denx.de/mailman/listinfo/u-boot 60160668236bSWolfgang Denk 6017c609719bSwdenkWhen you send a patch, please include the following information with 6018c609719bSwdenkit: 6019c609719bSwdenk 6020c609719bSwdenk* For bug fixes: a description of the bug and how your patch fixes 6021c609719bSwdenk this bug. Please try to include a way of demonstrating that the 6022c609719bSwdenk patch actually fixes something. 6023c609719bSwdenk 6024c609719bSwdenk* For new features: a description of the feature and your 6025c609719bSwdenk implementation. 6026c609719bSwdenk 6027c609719bSwdenk* A CHANGELOG entry as plaintext (separate from the patch) 6028c609719bSwdenk 6029c609719bSwdenk* For major contributions, your entry to the CREDITS file 6030c609719bSwdenk 603127af930eSAlbert ARIBAUD* When you add support for a new board, don't forget to add a 603227af930eSAlbert ARIBAUD maintainer e-mail address to the boards.cfg file, too. 6033c609719bSwdenk 6034c609719bSwdenk* If your patch adds new configuration options, don't forget to 6035c609719bSwdenk document these in the README file. 6036c609719bSwdenk 6037218ca724SWolfgang Denk* The patch itself. If you are using git (which is *strongly* 6038218ca724SWolfgang Denk recommended) you can easily generate the patch using the 60397ca9296eSWolfgang Denk "git format-patch". If you then use "git send-email" to send it to 6040218ca724SWolfgang Denk the U-Boot mailing list, you will avoid most of the common problems 6041218ca724SWolfgang Denk with some other mail clients. 6042c609719bSwdenk 6043218ca724SWolfgang Denk If you cannot use git, use "diff -purN OLD NEW". If your version of 6044218ca724SWolfgang Denk diff does not support these options, then get the latest version of 6045218ca724SWolfgang Denk GNU diff. 60466dff5529Swdenk 6047218ca724SWolfgang Denk The current directory when running this command shall be the parent 6048218ca724SWolfgang Denk directory of the U-Boot source tree (i. e. please make sure that 6049218ca724SWolfgang Denk your patch includes sufficient directory information for the 6050218ca724SWolfgang Denk affected files). 6051218ca724SWolfgang Denk 6052218ca724SWolfgang Denk We prefer patches as plain text. MIME attachments are discouraged, 6053218ca724SWolfgang Denk and compressed attachments must not be used. 6054c609719bSwdenk 605552f52c14Swdenk* If one logical set of modifications affects or creates several 605652f52c14Swdenk files, all these changes shall be submitted in a SINGLE patch file. 605752f52c14Swdenk 605852f52c14Swdenk* Changesets that contain different, unrelated modifications shall be 605952f52c14Swdenk submitted as SEPARATE patches, one patch per changeset. 606052f52c14Swdenk 606152f52c14Swdenk 6062c609719bSwdenkNotes: 6063c609719bSwdenk 6064c609719bSwdenk* Before sending the patch, run the MAKEALL script on your patched 6065c609719bSwdenk source tree and make sure that no errors or warnings are reported 6066c609719bSwdenk for any of the boards. 6067c609719bSwdenk 6068c609719bSwdenk* Keep your modifications to the necessary minimum: A patch 6069c609719bSwdenk containing several unrelated changes or arbitrary reformats will be 6070c609719bSwdenk returned with a request to re-formatting / split it. 6071c609719bSwdenk 6072c609719bSwdenk* If you modify existing code, make sure that your new code does not 6073c609719bSwdenk add to the memory footprint of the code ;-) Small is beautiful! 6074c609719bSwdenk When adding new features, these should compile conditionally only 6075c609719bSwdenk (using #ifdef), and the resulting code with the new feature 6076c609719bSwdenk disabled must not need more memory than the old code without your 6077c609719bSwdenk modification. 607890dc6704Swdenk 60790668236bSWolfgang Denk* Remember that there is a size limit of 100 kB per message on the 60800668236bSWolfgang Denk u-boot mailing list. Bigger patches will be moderated. If they are 60810668236bSWolfgang Denk reasonable and not too big, they will be acknowledged. But patches 60820668236bSWolfgang Denk bigger than the size limit should be avoided. 6083