1 c609719bSwdenk# 2 eca3aeb3SWolfgang Denk# (C) Copyright 2000 - 2013 3 c609719bSwdenk# Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 c609719bSwdenk# 5 eca3aeb3SWolfgang Denk# SPDX-License-Identifier: GPL-2.0+ 6 c609719bSwdenk# 7 c609719bSwdenk 8 c609719bSwdenkSummary: 9 c609719bSwdenk======== 10 c609719bSwdenk 11 24ee89b9SwdenkThis directory contains the source code for U-Boot, a boot loader for 12 e86e5a07SwdenkEmbedded boards based on PowerPC, ARM, MIPS and several other 13 e86e5a07Swdenkprocessors, which can be installed in a boot ROM and used to 14 e86e5a07Swdenkinitialize and test the hardware or to download and run application 15 e86e5a07Swdenkcode. 16 c609719bSwdenk 17 c609719bSwdenkThe development of U-Boot is closely related to Linux: some parts of 18 24ee89b9Swdenkthe source code originate in the Linux source tree, we have some 19 24ee89b9Swdenkheader files in common, and special provision has been made to 20 c609719bSwdenksupport booting of Linux images. 21 c609719bSwdenk 22 c609719bSwdenkSome attention has been paid to make this software easily 23 c609719bSwdenkconfigurable and extendable. For instance, all monitor commands are 24 c609719bSwdenkimplemented with the same call interface, so that it's very easy to 25 c609719bSwdenkadd new commands. Also, instead of permanently adding rarely used 26 c609719bSwdenkcode (for instance hardware test utilities) to the monitor, you can 27 c609719bSwdenkload and run it dynamically. 28 c609719bSwdenk 29 c609719bSwdenk 30 c609719bSwdenkStatus: 31 c609719bSwdenk======= 32 c609719bSwdenk 33 c609719bSwdenkIn general, all boards for which a configuration option exists in the 34 c609719bSwdenkMakefile have been tested to some extent and can be considered 35 c609719bSwdenk"working". In fact, many of them are used in production systems. 36 c609719bSwdenk 37 c609719bSwdenkIn case of problems see the CHANGELOG and CREDITS files to find out 38 27af930eSAlbert ARIBAUDwho contributed the specific port. The boards.cfg file lists board 39 218ca724SWolfgang Denkmaintainers. 40 c609719bSwdenk 41 adb9d851SRobert P. J. DayNote: There is no CHANGELOG file in the actual U-Boot source tree; 42 adb9d851SRobert P. J. Dayit can be created dynamically from the Git log using: 43 adb9d851SRobert P. J. Day 44 adb9d851SRobert P. J. Day make CHANGELOG 45 adb9d851SRobert P. J. Day 46 c609719bSwdenk 47 c609719bSwdenkWhere to get help: 48 c609719bSwdenk================== 49 c609719bSwdenk 50 c609719bSwdenkIn case you have questions about, problems with or contributions for 51 c609719bSwdenkU-Boot you should send a message to the U-Boot mailing list at 52 0c32565fSPeter Tyser<u-boot@lists.denx.de>. There is also an archive of previous traffic 53 0c32565fSPeter Tyseron the mailing list - please search the archive before asking FAQ's. 54 0c32565fSPeter TyserPlease see http://lists.denx.de/pipermail/u-boot and 55 0c32565fSPeter Tyserhttp://dir.gmane.org/gmane.comp.boot-loaders.u-boot 56 c609719bSwdenk 57 c609719bSwdenk 58 218ca724SWolfgang DenkWhere to get source code: 59 218ca724SWolfgang Denk========================= 60 218ca724SWolfgang Denk 61 218ca724SWolfgang DenkThe U-Boot source code is maintained in the git repository at 62 218ca724SWolfgang Denkgit://www.denx.de/git/u-boot.git ; you can browse it online at 63 218ca724SWolfgang Denkhttp://www.denx.de/cgi-bin/gitweb.cgi?p=u-boot.git;a=summary 64 218ca724SWolfgang Denk 65 218ca724SWolfgang DenkThe "snapshot" links on this page allow you to download tarballs of 66 11ccc33fSMarcel Ziswilerany version you might be interested in. Official releases are also 67 218ca724SWolfgang Denkavailable for FTP download from the ftp://ftp.denx.de/pub/u-boot/ 68 218ca724SWolfgang Denkdirectory. 69 218ca724SWolfgang Denk 70 d4ee711dSAnatolij GustschinPre-built (and tested) images are available from 71 218ca724SWolfgang Denkftp://ftp.denx.de/pub/u-boot/images/ 72 218ca724SWolfgang Denk 73 218ca724SWolfgang Denk 74 c609719bSwdenkWhere we come from: 75 c609719bSwdenk=================== 76 c609719bSwdenk 77 c609719bSwdenk- start from 8xxrom sources 78 24ee89b9Swdenk- create PPCBoot project (http://sourceforge.net/projects/ppcboot) 79 c609719bSwdenk- clean up code 80 c609719bSwdenk- make it easier to add custom boards 81 c609719bSwdenk- make it possible to add other [PowerPC] CPUs 82 c609719bSwdenk- extend functions, especially: 83 c609719bSwdenk * Provide extended interface to Linux boot loader 84 c609719bSwdenk * S-Record download 85 c609719bSwdenk * network boot 86 11ccc33fSMarcel Ziswiler * PCMCIA / CompactFlash / ATA disk / SCSI ... boot 87 24ee89b9Swdenk- create ARMBoot project (http://sourceforge.net/projects/armboot) 88 c609719bSwdenk- add other CPU families (starting with ARM) 89 24ee89b9Swdenk- create U-Boot project (http://sourceforge.net/projects/u-boot) 90 0d28f34bSMagnus Lilja- current project page: see http://www.denx.de/wiki/U-Boot 91 24ee89b9Swdenk 92 24ee89b9Swdenk 93 24ee89b9SwdenkNames and Spelling: 94 24ee89b9Swdenk=================== 95 24ee89b9Swdenk 96 24ee89b9SwdenkThe "official" name of this project is "Das U-Boot". The spelling 97 24ee89b9Swdenk"U-Boot" shall be used in all written text (documentation, comments 98 24ee89b9Swdenkin source files etc.). Example: 99 24ee89b9Swdenk 100 24ee89b9Swdenk This is the README file for the U-Boot project. 101 24ee89b9Swdenk 102 24ee89b9SwdenkFile names etc. shall be based on the string "u-boot". Examples: 103 24ee89b9Swdenk 104 24ee89b9Swdenk include/asm-ppc/u-boot.h 105 24ee89b9Swdenk 106 24ee89b9Swdenk #include <asm/u-boot.h> 107 24ee89b9Swdenk 108 24ee89b9SwdenkVariable names, preprocessor constants etc. shall be either based on 109 24ee89b9Swdenkthe string "u_boot" or on "U_BOOT". Example: 110 24ee89b9Swdenk 111 24ee89b9Swdenk U_BOOT_VERSION u_boot_logo 112 24ee89b9Swdenk IH_OS_U_BOOT u_boot_hush_start 113 c609719bSwdenk 114 c609719bSwdenk 115 93f19cc0SwdenkVersioning: 116 93f19cc0Swdenk=========== 117 93f19cc0Swdenk 118 360d883aSThomas WeberStarting with the release in October 2008, the names of the releases 119 360d883aSThomas Weberwere changed from numerical release numbers without deeper meaning 120 360d883aSThomas Weberinto a time stamp based numbering. Regular releases are identified by 121 360d883aSThomas Webernames consisting of the calendar year and month of the release date. 122 360d883aSThomas WeberAdditional fields (if present) indicate release candidates or bug fix 123 360d883aSThomas Weberreleases in "stable" maintenance trees. 124 93f19cc0Swdenk 125 360d883aSThomas WeberExamples: 126 360d883aSThomas Weber U-Boot v2009.11 - Release November 2009 127 360d883aSThomas Weber U-Boot v2009.11.1 - Release 1 in version November 2009 stable tree 128 360d883aSThomas Weber U-Boot v2010.09-rc1 - Release candiate 1 for September 2010 release 129 93f19cc0Swdenk 130 93f19cc0Swdenk 131 c609719bSwdenkDirectory Hierarchy: 132 c609719bSwdenk==================== 133 c609719bSwdenk 134 8d321b81SPeter Tyser/arch Architecture specific files 135 6eae68e4SMasahiro Yamada /arc Files generic to ARC architecture 136 6eae68e4SMasahiro Yamada /cpu CPU specific files 137 6eae68e4SMasahiro Yamada /arc700 Files specific to ARC 700 CPUs 138 6eae68e4SMasahiro Yamada /lib Architecture specific library files 139 8d321b81SPeter Tyser /arm Files generic to ARM architecture 140 8d321b81SPeter Tyser /cpu CPU specific files 141 8d321b81SPeter Tyser /arm720t Files specific to ARM 720 CPUs 142 8d321b81SPeter Tyser /arm920t Files specific to ARM 920 CPUs 143 6eb0921aSAndreas Bießmann /at91 Files specific to Atmel AT91RM9200 CPU 144 8d321b81SPeter Tyser /imx Files specific to Freescale MC9328 i.MX CPUs 145 8d321b81SPeter Tyser /s3c24x0 Files specific to Samsung S3C24X0 CPUs 146 8d321b81SPeter Tyser /arm926ejs Files specific to ARM 926 CPUs 147 8d321b81SPeter Tyser /arm1136 Files specific to ARM 1136 CPUs 148 8d321b81SPeter Tyser /pxa Files specific to Intel XScale PXA CPUs 149 8d321b81SPeter Tyser /sa1100 Files specific to Intel StrongARM SA1100 CPUs 150 8d321b81SPeter Tyser /lib Architecture specific library files 151 8d321b81SPeter Tyser /avr32 Files generic to AVR32 architecture 152 8d321b81SPeter Tyser /cpu CPU specific files 153 8d321b81SPeter Tyser /lib Architecture specific library files 154 8d321b81SPeter Tyser /blackfin Files generic to Analog Devices Blackfin architecture 155 8d321b81SPeter Tyser /cpu CPU specific files 156 8d321b81SPeter Tyser /lib Architecture specific library files 157 8d321b81SPeter Tyser /m68k Files generic to m68k architecture 158 8d321b81SPeter Tyser /cpu CPU specific files 159 8d321b81SPeter Tyser /mcf52x2 Files specific to Freescale ColdFire MCF52x2 CPUs 160 8d321b81SPeter Tyser /mcf5227x Files specific to Freescale ColdFire MCF5227x CPUs 161 8d321b81SPeter Tyser /mcf532x Files specific to Freescale ColdFire MCF5329 CPUs 162 8d321b81SPeter Tyser /mcf5445x Files specific to Freescale ColdFire MCF5445x CPUs 163 8d321b81SPeter Tyser /mcf547x_8x Files specific to Freescale ColdFire MCF547x_8x CPUs 164 8d321b81SPeter Tyser /lib Architecture specific library files 165 8d321b81SPeter Tyser /microblaze Files generic to microblaze architecture 166 8d321b81SPeter Tyser /cpu CPU specific files 167 8d321b81SPeter Tyser /lib Architecture specific library files 168 8d321b81SPeter Tyser /mips Files generic to MIPS architecture 169 8d321b81SPeter Tyser /cpu CPU specific files 170 92bbd64eSDaniel Schwierzeck /mips32 Files specific to MIPS32 CPUs 171 6eae68e4SMasahiro Yamada /mips64 Files specific to MIPS64 CPUs 172 8d321b81SPeter Tyser /lib Architecture specific library files 173 afc1ce82SMacpaul Lin /nds32 Files generic to NDS32 architecture 174 afc1ce82SMacpaul Lin /cpu CPU specific files 175 afc1ce82SMacpaul Lin /n1213 Files specific to Andes Technology N1213 CPUs 176 afc1ce82SMacpaul Lin /lib Architecture specific library files 177 8d321b81SPeter Tyser /nios2 Files generic to Altera NIOS2 architecture 178 8d321b81SPeter Tyser /cpu CPU specific files 179 8d321b81SPeter Tyser /lib Architecture specific library files 180 33c7731bSRobert P. J. Day /openrisc Files generic to OpenRISC architecture 181 33c7731bSRobert P. J. Day /cpu CPU specific files 182 33c7731bSRobert P. J. Day /lib Architecture specific library files 183 a47a12beSStefan Roese /powerpc Files generic to PowerPC architecture 184 8d321b81SPeter Tyser /cpu CPU specific files 185 8d321b81SPeter Tyser /74xx_7xx Files specific to Freescale MPC74xx and 7xx CPUs 186 8d321b81SPeter Tyser /mpc5xx Files specific to Freescale MPC5xx CPUs 187 8d321b81SPeter Tyser /mpc5xxx Files specific to Freescale MPC5xxx CPUs 188 8d321b81SPeter Tyser /mpc8xx Files specific to Freescale MPC8xx CPUs 189 8d321b81SPeter Tyser /mpc824x Files specific to Freescale MPC824x CPUs 190 8d321b81SPeter Tyser /mpc8260 Files specific to Freescale MPC8260 CPUs 191 8d321b81SPeter Tyser /mpc85xx Files specific to Freescale MPC85xx CPUs 192 8d321b81SPeter Tyser /ppc4xx Files specific to AMCC PowerPC 4xx CPUs 193 8d321b81SPeter Tyser /lib Architecture specific library files 194 8d321b81SPeter Tyser /sh Files generic to SH architecture 195 8d321b81SPeter Tyser /cpu CPU specific files 196 8d321b81SPeter Tyser /sh2 Files specific to sh2 CPUs 197 8d321b81SPeter Tyser /sh3 Files specific to sh3 CPUs 198 8d321b81SPeter Tyser /sh4 Files specific to sh4 CPUs 199 8d321b81SPeter Tyser /lib Architecture specific library files 200 8d321b81SPeter Tyser /sparc Files generic to SPARC architecture 201 8d321b81SPeter Tyser /cpu CPU specific files 202 8d321b81SPeter Tyser /leon2 Files specific to Gaisler LEON2 SPARC CPU 203 8d321b81SPeter Tyser /leon3 Files specific to Gaisler LEON3 SPARC CPU 204 8d321b81SPeter Tyser /lib Architecture specific library files 205 33c7731bSRobert P. J. Day /x86 Files generic to x86 architecture 206 33c7731bSRobert P. J. Day /cpu CPU specific files 207 33c7731bSRobert P. J. Day /lib Architecture specific library files 208 8d321b81SPeter Tyser/api Machine/arch independent API for external apps 209 8d321b81SPeter Tyser/board Board dependent files 210 8d321b81SPeter Tyser/common Misc architecture independent functions 211 8d321b81SPeter Tyser/disk Code for disk drive partition handling 212 8d321b81SPeter Tyser/doc Documentation (don't expect too much) 213 8d321b81SPeter Tyser/drivers Commonly used device drivers 214 33c7731bSRobert P. J. Day/dts Contains Makefile for building internal U-Boot fdt. 215 8d321b81SPeter Tyser/examples Example code for standalone applications, etc. 216 8d321b81SPeter Tyser/fs Filesystem code (cramfs, ext2, jffs2, etc.) 217 8d321b81SPeter Tyser/include Header Files 218 8d321b81SPeter Tyser/lib Files generic to all architectures 219 8d321b81SPeter Tyser /libfdt Library files to support flattened device trees 220 8d321b81SPeter Tyser /lzma Library files to support LZMA decompression 221 8d321b81SPeter Tyser /lzo Library files to support LZO decompression 222 8d321b81SPeter Tyser/net Networking code 223 8d321b81SPeter Tyser/post Power On Self Test 224 33c7731bSRobert P. J. Day/spl Secondary Program Loader framework 225 8d321b81SPeter Tyser/tools Tools to build S-Record or U-Boot images, etc. 226 c609719bSwdenk 227 c609719bSwdenkSoftware Configuration: 228 c609719bSwdenk======================= 229 c609719bSwdenk 230 c609719bSwdenkConfiguration is usually done using C preprocessor defines; the 231 c609719bSwdenkrationale behind that is to avoid dead code whenever possible. 232 c609719bSwdenk 233 c609719bSwdenkThere are two classes of configuration variables: 234 c609719bSwdenk 235 c609719bSwdenk* Configuration _OPTIONS_: 236 c609719bSwdenk These are selectable by the user and have names beginning with 237 c609719bSwdenk "CONFIG_". 238 c609719bSwdenk 239 c609719bSwdenk* Configuration _SETTINGS_: 240 c609719bSwdenk These depend on the hardware etc. and should not be meddled with if 241 c609719bSwdenk you don't know what you're doing; they have names beginning with 242 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD "CONFIG_SYS_". 243 c609719bSwdenk 244 c609719bSwdenkLater we will add a configuration tool - probably similar to or even 245 c609719bSwdenkidentical to what's used for the Linux kernel. Right now, we have to 246 c609719bSwdenkdo the configuration by hand, which means creating some symbolic 247 c609719bSwdenklinks and editing some configuration files. We use the TQM8xxL boards 248 c609719bSwdenkas an example here. 249 c609719bSwdenk 250 c609719bSwdenk 251 c609719bSwdenkSelection of Processor Architecture and Board Type: 252 c609719bSwdenk--------------------------------------------------- 253 c609719bSwdenk 254 c609719bSwdenkFor all supported boards there are ready-to-use default 255 ab584d67SHolger Freytherconfigurations available; just type "make <board_name>_defconfig". 256 c609719bSwdenk 257 c609719bSwdenkExample: For a TQM823L module type: 258 c609719bSwdenk 259 c609719bSwdenk cd u-boot 260 ab584d67SHolger Freyther make TQM823L_defconfig 261 c609719bSwdenk 262 11ccc33fSMarcel ZiswilerFor the Cogent platform, you need to specify the CPU type as well; 263 ab584d67SHolger Freythere.g. "make cogent_mpc8xx_defconfig". And also configure the cogent 264 c609719bSwdenkdirectory according to the instructions in cogent/README. 265 c609719bSwdenk 266 c609719bSwdenk 267 75b3c3aaSSimon GlassSandbox Environment: 268 75b3c3aaSSimon Glass-------------------- 269 75b3c3aaSSimon Glass 270 75b3c3aaSSimon GlassU-Boot can be built natively to run on a Linux host using the 'sandbox' 271 75b3c3aaSSimon Glassboard. This allows feature development which is not board- or architecture- 272 75b3c3aaSSimon Glassspecific to be undertaken on a native platform. The sandbox is also used to 273 75b3c3aaSSimon Glassrun some of U-Boot's tests. 274 75b3c3aaSSimon Glass 275 6b1978f8SJagannadha Sutradharudu TekiSee board/sandbox/README.sandbox for more details. 276 75b3c3aaSSimon Glass 277 75b3c3aaSSimon Glass 278 c609719bSwdenkConfiguration Options: 279 c609719bSwdenk---------------------- 280 c609719bSwdenk 281 c609719bSwdenkConfiguration depends on the combination of board and CPU type; all 282 c609719bSwdenksuch information is kept in a configuration file 283 c609719bSwdenk"include/configs/<board_name>.h". 284 c609719bSwdenk 285 c609719bSwdenkExample: For a TQM823L module, all configuration settings are in 286 c609719bSwdenk"include/configs/TQM823L.h". 287 c609719bSwdenk 288 c609719bSwdenk 289 7f6c2cbcSwdenkMany of the options are named exactly as the corresponding Linux 290 7f6c2cbcSwdenkkernel configuration options. The intention is to make it easier to 291 7f6c2cbcSwdenkbuild a config tool - later. 292 7f6c2cbcSwdenk 293 7f6c2cbcSwdenk 294 c609719bSwdenkThe following options need to be configured: 295 c609719bSwdenk 296 2628114eSKim Phillips- CPU Type: Define exactly one, e.g. CONFIG_MPC85XX. 297 c609719bSwdenk 298 2628114eSKim Phillips- Board Type: Define exactly one, e.g. CONFIG_MPC8540ADS. 299 6ccec449SWolfgang Denk 300 6ccec449SWolfgang Denk- CPU Daughterboard Type: (if CONFIG_ATSTK1000 is defined) 301 09ea0de0SHaavard Skinnemoen Define exactly one, e.g. CONFIG_ATSTK1002 302 c609719bSwdenk 303 c609719bSwdenk- CPU Module Type: (if CONFIG_COGENT is defined) 304 c609719bSwdenk Define exactly one of 305 c609719bSwdenk CONFIG_CMA286_60_OLD 306 c609719bSwdenk--- FIXME --- not tested yet: 307 c609719bSwdenk CONFIG_CMA286_60, CONFIG_CMA286_21, CONFIG_CMA286_60P, 308 c609719bSwdenk CONFIG_CMA287_23, CONFIG_CMA287_50 309 c609719bSwdenk 310 c609719bSwdenk- Motherboard Type: (if CONFIG_COGENT is defined) 311 c609719bSwdenk Define exactly one of 312 c609719bSwdenk CONFIG_CMA101, CONFIG_CMA102 313 c609719bSwdenk 314 c609719bSwdenk- Motherboard I/O Modules: (if CONFIG_COGENT is defined) 315 c609719bSwdenk Define one or more of 316 c609719bSwdenk CONFIG_CMA302 317 c609719bSwdenk 318 c609719bSwdenk- Motherboard Options: (if CONFIG_CMA101 or CONFIG_CMA102 are defined) 319 c609719bSwdenk Define one or more of 320 c609719bSwdenk CONFIG_LCD_HEARTBEAT - update a character position on 321 11ccc33fSMarcel Ziswiler the LCD display every second with 322 c609719bSwdenk a "rotator" |\-/|\-/ 323 c609719bSwdenk 324 cf946c6dSLei Wen- Marvell Family Member 325 cf946c6dSLei Wen CONFIG_SYS_MVFS - define it if you want to enable 326 cf946c6dSLei Wen multiple fs option at one time 327 cf946c6dSLei Wen for marvell soc family 328 cf946c6dSLei Wen 329 c609719bSwdenk- MPC824X Family Member (if CONFIG_MPC824X is defined) 330 c609719bSwdenk Define exactly one of 331 c609719bSwdenk CONFIG_MPC8240, CONFIG_MPC8245 332 c609719bSwdenk 333 11ccc33fSMarcel Ziswiler- 8xx CPU Options: (if using an MPC8xx CPU) 334 66ca92a5Swdenk CONFIG_8xx_GCLK_FREQ - deprecated: CPU clock if 335 66ca92a5Swdenk get_gclk_freq() cannot work 336 5da627a4Swdenk e.g. if there is no 32KHz 337 5da627a4Swdenk reference PIT/RTC clock 338 66ca92a5Swdenk CONFIG_8xx_OSCLK - PLL input clock (either EXTCLK 339 66ca92a5Swdenk or XTAL/EXTAL) 340 c609719bSwdenk 341 66ca92a5Swdenk- 859/866/885 CPU options: (if using a MPC859 or MPC866 or MPC885 CPU): 342 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8xx_CPUCLK_MIN 343 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8xx_CPUCLK_MAX 344 66ca92a5Swdenk CONFIG_8xx_CPUCLK_DEFAULT 345 75d1ea7fSwdenk See doc/README.MPC866 346 75d1ea7fSwdenk 347 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MEASURE_CPUCLK 348 75d1ea7fSwdenk 349 75d1ea7fSwdenk Define this to measure the actual CPU clock instead 350 75d1ea7fSwdenk of relying on the correctness of the configured 351 75d1ea7fSwdenk values. Mostly useful for board bringup to make sure 352 75d1ea7fSwdenk the PLL is locked at the intended frequency. Note 353 75d1ea7fSwdenk that this requires a (stable) reference clock (32 kHz 354 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD RTC clock or CONFIG_SYS_8XX_XIN) 355 75d1ea7fSwdenk 356 506f3918SHeiko Schocher CONFIG_SYS_DELAYED_ICACHE 357 506f3918SHeiko Schocher 358 506f3918SHeiko Schocher Define this option if you want to enable the 359 506f3918SHeiko Schocher ICache only when Code runs from RAM. 360 506f3918SHeiko Schocher 361 66412c63SKumar Gala- 85xx CPU Options: 362 ffd06e02SYork Sun CONFIG_SYS_PPC64 363 ffd06e02SYork Sun 364 ffd06e02SYork Sun Specifies that the core is a 64-bit PowerPC implementation (implements 365 ffd06e02SYork Sun the "64" category of the Power ISA). This is necessary for ePAPR 366 ffd06e02SYork Sun compliance, among other possible reasons. 367 ffd06e02SYork Sun 368 66412c63SKumar Gala CONFIG_SYS_FSL_TBCLK_DIV 369 66412c63SKumar Gala 370 66412c63SKumar Gala Defines the core time base clock divider ratio compared to the 371 66412c63SKumar Gala system clock. On most PQ3 devices this is 8, on newer QorIQ 372 66412c63SKumar Gala devices it can be 16 or 32. The ratio varies from SoC to Soc. 373 66412c63SKumar Gala 374 8f29084aSKumar Gala CONFIG_SYS_FSL_PCIE_COMPAT 375 8f29084aSKumar Gala 376 8f29084aSKumar Gala Defines the string to utilize when trying to match PCIe device 377 8f29084aSKumar Gala tree nodes for the given platform. 378 8f29084aSKumar Gala 379 afa6b551SPrabhakar Kushwaha CONFIG_SYS_PPC_E500_DEBUG_TLB 380 afa6b551SPrabhakar Kushwaha 381 afa6b551SPrabhakar Kushwaha Enables a temporary TLB entry to be used during boot to work 382 afa6b551SPrabhakar Kushwaha around limitations in e500v1 and e500v2 external debugger 383 afa6b551SPrabhakar Kushwaha support. This reduces the portions of the boot code where 384 afa6b551SPrabhakar Kushwaha breakpoints and single stepping do not work. The value of this 385 afa6b551SPrabhakar Kushwaha symbol should be set to the TLB1 entry to be used for this 386 afa6b551SPrabhakar Kushwaha purpose. 387 afa6b551SPrabhakar Kushwaha 388 33eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510 389 33eee330SScott Wood 390 33eee330SScott Wood Enables a workaround for erratum A004510. If set, 391 33eee330SScott Wood then CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV and 392 33eee330SScott Wood CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY must be set. 393 33eee330SScott Wood 394 33eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV 395 33eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2 (optional) 396 33eee330SScott Wood 397 33eee330SScott Wood Defines one or two SoC revisions (low 8 bits of SVR) 398 33eee330SScott Wood for which the A004510 workaround should be applied. 399 33eee330SScott Wood 400 33eee330SScott Wood The rest of SVR is either not relevant to the decision 401 33eee330SScott Wood of whether the erratum is present (e.g. p2040 versus 402 33eee330SScott Wood p2041) or is implied by the build target, which controls 403 33eee330SScott Wood whether CONFIG_SYS_FSL_ERRATUM_A004510 is set. 404 33eee330SScott Wood 405 33eee330SScott Wood See Freescale App Note 4493 for more information about 406 33eee330SScott Wood this erratum. 407 33eee330SScott Wood 408 74fa22edSPrabhakar Kushwaha CONFIG_A003399_NOR_WORKAROUND 409 74fa22edSPrabhakar Kushwaha Enables a workaround for IFC erratum A003399. It is only 410 74fa22edSPrabhakar Kushwaha requred during NOR boot. 411 74fa22edSPrabhakar Kushwaha 412 33eee330SScott Wood CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY 413 33eee330SScott Wood 414 33eee330SScott Wood This is the value to write into CCSR offset 0x18600 415 33eee330SScott Wood according to the A004510 workaround. 416 33eee330SScott Wood 417 64501c66SPriyanka Jain CONFIG_SYS_FSL_DSP_DDR_ADDR 418 64501c66SPriyanka Jain This value denotes start offset of DDR memory which is 419 64501c66SPriyanka Jain connected exclusively to the DSP cores. 420 64501c66SPriyanka Jain 421 765b0bdbSPriyanka Jain CONFIG_SYS_FSL_DSP_M2_RAM_ADDR 422 765b0bdbSPriyanka Jain This value denotes start offset of M2 memory 423 765b0bdbSPriyanka Jain which is directly connected to the DSP core. 424 765b0bdbSPriyanka Jain 425 64501c66SPriyanka Jain CONFIG_SYS_FSL_DSP_M3_RAM_ADDR 426 64501c66SPriyanka Jain This value denotes start offset of M3 memory which is directly 427 64501c66SPriyanka Jain connected to the DSP core. 428 64501c66SPriyanka Jain 429 765b0bdbSPriyanka Jain CONFIG_SYS_FSL_DSP_CCSRBAR_DEFAULT 430 765b0bdbSPriyanka Jain This value denotes start offset of DSP CCSR space. 431 765b0bdbSPriyanka Jain 432 b135991aSPriyanka Jain CONFIG_SYS_FSL_SINGLE_SOURCE_CLK 433 b135991aSPriyanka Jain Single Source Clock is clocking mode present in some of FSL SoC's. 434 b135991aSPriyanka Jain In this mode, a single differential clock is used to supply 435 b135991aSPriyanka Jain clocks to the sysclock, ddrclock and usbclock. 436 b135991aSPriyanka Jain 437 fb4a2409SAneesh Bansal CONFIG_SYS_CPC_REINIT_F 438 fb4a2409SAneesh Bansal This CONFIG is defined when the CPC is configured as SRAM at the 439 fb4a2409SAneesh Bansal time of U-boot entry and is required to be re-initialized. 440 fb4a2409SAneesh Bansal 441 aade2004STang Yuantian CONFIG_DEEP_SLEEP 442 aade2004STang Yuantian Inidcates this SoC supports deep sleep feature. If deep sleep is 443 aade2004STang Yuantian supported, core will start to execute uboot when wakes up. 444 aade2004STang Yuantian 445 6cb461b4SDaniel Schwierzeck- Generic CPU options: 446 2a1680e3SYork Sun CONFIG_SYS_GENERIC_GLOBAL_DATA 447 2a1680e3SYork Sun Defines global data is initialized in generic board board_init_f(). 448 2a1680e3SYork Sun If this macro is defined, global data is created and cleared in 449 2a1680e3SYork Sun generic board board_init_f(). Without this macro, architecture/board 450 2a1680e3SYork Sun should initialize global data before calling board_init_f(). 451 2a1680e3SYork Sun 452 6cb461b4SDaniel Schwierzeck CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN 453 6cb461b4SDaniel Schwierzeck 454 6cb461b4SDaniel Schwierzeck Defines the endianess of the CPU. Implementation of those 455 6cb461b4SDaniel Schwierzeck values is arch specific. 456 6cb461b4SDaniel Schwierzeck 457 5614e71bSYork Sun CONFIG_SYS_FSL_DDR 458 5614e71bSYork Sun Freescale DDR driver in use. This type of DDR controller is 459 5614e71bSYork Sun found in mpc83xx, mpc85xx, mpc86xx as well as some ARM core 460 5614e71bSYork Sun SoCs. 461 5614e71bSYork Sun 462 5614e71bSYork Sun CONFIG_SYS_FSL_DDR_ADDR 463 5614e71bSYork Sun Freescale DDR memory-mapped register base. 464 5614e71bSYork Sun 465 5614e71bSYork Sun CONFIG_SYS_FSL_DDR_EMU 466 5614e71bSYork Sun Specify emulator support for DDR. Some DDR features such as 467 5614e71bSYork Sun deskew training are not available. 468 5614e71bSYork Sun 469 5614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN1 470 5614e71bSYork Sun Freescale DDR1 controller. 471 5614e71bSYork Sun 472 5614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN2 473 5614e71bSYork Sun Freescale DDR2 controller. 474 5614e71bSYork Sun 475 5614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN3 476 5614e71bSYork Sun Freescale DDR3 controller. 477 5614e71bSYork Sun 478 34e026f9SYork Sun CONFIG_SYS_FSL_DDRC_GEN4 479 34e026f9SYork Sun Freescale DDR4 controller. 480 34e026f9SYork Sun 481 9ac4ffbdSYork Sun CONFIG_SYS_FSL_DDRC_ARM_GEN3 482 9ac4ffbdSYork Sun Freescale DDR3 controller for ARM-based SoCs. 483 9ac4ffbdSYork Sun 484 5614e71bSYork Sun CONFIG_SYS_FSL_DDR1 485 5614e71bSYork Sun Board config to use DDR1. It can be enabled for SoCs with 486 5614e71bSYork Sun Freescale DDR1 or DDR2 controllers, depending on the board 487 5614e71bSYork Sun implemetation. 488 5614e71bSYork Sun 489 5614e71bSYork Sun CONFIG_SYS_FSL_DDR2 490 5614e71bSYork Sun Board config to use DDR2. It can be eanbeld for SoCs with 491 5614e71bSYork Sun Freescale DDR2 or DDR3 controllers, depending on the board 492 5614e71bSYork Sun implementation. 493 5614e71bSYork Sun 494 5614e71bSYork Sun CONFIG_SYS_FSL_DDR3 495 5614e71bSYork Sun Board config to use DDR3. It can be enabled for SoCs with 496 34e026f9SYork Sun Freescale DDR3 or DDR3L controllers. 497 34e026f9SYork Sun 498 34e026f9SYork Sun CONFIG_SYS_FSL_DDR3L 499 34e026f9SYork Sun Board config to use DDR3L. It can be enabled for SoCs with 500 34e026f9SYork Sun DDR3L controllers. 501 34e026f9SYork Sun 502 34e026f9SYork Sun CONFIG_SYS_FSL_DDR4 503 34e026f9SYork Sun Board config to use DDR4. It can be enabled for SoCs with 504 34e026f9SYork Sun DDR4 controllers. 505 5614e71bSYork Sun 506 1b4175d6SPrabhakar Kushwaha CONFIG_SYS_FSL_IFC_BE 507 1b4175d6SPrabhakar Kushwaha Defines the IFC controller register space as Big Endian 508 1b4175d6SPrabhakar Kushwaha 509 1b4175d6SPrabhakar Kushwaha CONFIG_SYS_FSL_IFC_LE 510 1b4175d6SPrabhakar Kushwaha Defines the IFC controller register space as Little Endian 511 1b4175d6SPrabhakar Kushwaha 512 690e4258SPrabhakar Kushwaha CONFIG_SYS_FSL_PBL_PBI 513 690e4258SPrabhakar Kushwaha It enables addition of RCW (Power on reset configuration) in built image. 514 690e4258SPrabhakar Kushwaha Please refer doc/README.pblimage for more details 515 690e4258SPrabhakar Kushwaha 516 690e4258SPrabhakar Kushwaha CONFIG_SYS_FSL_PBL_RCW 517 690e4258SPrabhakar Kushwaha It adds PBI(pre-boot instructions) commands in u-boot build image. 518 690e4258SPrabhakar Kushwaha PBI commands can be used to configure SoC before it starts the execution. 519 690e4258SPrabhakar Kushwaha Please refer doc/README.pblimage for more details 520 690e4258SPrabhakar Kushwaha 521 89ad7be8SPrabhakar Kushwaha CONFIG_SPL_FSL_PBL 522 89ad7be8SPrabhakar Kushwaha It adds a target to create boot binary having SPL binary in PBI format 523 89ad7be8SPrabhakar Kushwaha concatenated with u-boot binary. 524 89ad7be8SPrabhakar Kushwaha 525 4e5b1bd0SYork Sun CONFIG_SYS_FSL_DDR_BE 526 4e5b1bd0SYork Sun Defines the DDR controller register space as Big Endian 527 4e5b1bd0SYork Sun 528 4e5b1bd0SYork Sun CONFIG_SYS_FSL_DDR_LE 529 4e5b1bd0SYork Sun Defines the DDR controller register space as Little Endian 530 4e5b1bd0SYork Sun 531 6b9e309aSYork Sun CONFIG_SYS_FSL_DDR_SDRAM_BASE_PHY 532 6b9e309aSYork Sun Physical address from the view of DDR controllers. It is the 533 6b9e309aSYork Sun same as CONFIG_SYS_DDR_SDRAM_BASE for all Power SoCs. But 534 6b9e309aSYork Sun it could be different for ARM SoCs. 535 6b9e309aSYork Sun 536 6b1e1254SYork Sun CONFIG_SYS_FSL_DDR_INTLV_256B 537 6b1e1254SYork Sun DDR controller interleaving on 256-byte. This is a special 538 6b1e1254SYork Sun interleaving mode, handled by Dickens for Freescale layerscape 539 6b1e1254SYork Sun SoCs with ARM core. 540 6b1e1254SYork Sun 541 *1d71efbbSYork Sun CONFIG_SYS_FSL_DDR_MAIN_NUM_CTRLS 542 *1d71efbbSYork Sun Number of controllers used as main memory. 543 *1d71efbbSYork Sun 544 *1d71efbbSYork Sun CONFIG_SYS_FSL_OTHER_DDR_NUM_CTRLS 545 *1d71efbbSYork Sun Number of controllers used for other than main memory. 546 *1d71efbbSYork Sun 547 0b953ffcSMarkus Klotzbuecher- Intel Monahans options: 548 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MONAHANS_RUN_MODE_OSC_RATIO 549 0b953ffcSMarkus Klotzbuecher 550 0b953ffcSMarkus Klotzbuecher Defines the Monahans run mode to oscillator 551 0b953ffcSMarkus Klotzbuecher ratio. Valid values are 8, 16, 24, 31. The core 552 0b953ffcSMarkus Klotzbuecher frequency is this value multiplied by 13 MHz. 553 0b953ffcSMarkus Klotzbuecher 554 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MONAHANS_TURBO_RUN_MODE_RATIO 555 0b953ffcSMarkus Klotzbuecher 556 0b953ffcSMarkus Klotzbuecher Defines the Monahans turbo mode to oscillator 557 0b953ffcSMarkus Klotzbuecher ratio. Valid values are 1 (default if undefined) and 558 0b953ffcSMarkus Klotzbuecher 2. The core frequency as calculated above is multiplied 559 0b953ffcSMarkus Klotzbuecher by this value. 560 0b953ffcSMarkus Klotzbuecher 561 92bbd64eSDaniel Schwierzeck- MIPS CPU options: 562 92bbd64eSDaniel Schwierzeck CONFIG_SYS_INIT_SP_OFFSET 563 92bbd64eSDaniel Schwierzeck 564 92bbd64eSDaniel Schwierzeck Offset relative to CONFIG_SYS_SDRAM_BASE for initial stack 565 92bbd64eSDaniel Schwierzeck pointer. This is needed for the temporary stack before 566 92bbd64eSDaniel Schwierzeck relocation. 567 92bbd64eSDaniel Schwierzeck 568 92bbd64eSDaniel Schwierzeck CONFIG_SYS_MIPS_CACHE_MODE 569 92bbd64eSDaniel Schwierzeck 570 92bbd64eSDaniel Schwierzeck Cache operation mode for the MIPS CPU. 571 92bbd64eSDaniel Schwierzeck See also arch/mips/include/asm/mipsregs.h. 572 92bbd64eSDaniel Schwierzeck Possible values are: 573 92bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_NO_WA 574 92bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_WA 575 92bbd64eSDaniel Schwierzeck CONF_CM_UNCACHED 576 92bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_NONCOHERENT 577 92bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_CE 578 92bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_COW 579 92bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_CUW 580 92bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_ACCELERATED 581 92bbd64eSDaniel Schwierzeck 582 92bbd64eSDaniel Schwierzeck CONFIG_SYS_XWAY_EBU_BOOTCFG 583 92bbd64eSDaniel Schwierzeck 584 92bbd64eSDaniel Schwierzeck Special option for Lantiq XWAY SoCs for booting from NOR flash. 585 92bbd64eSDaniel Schwierzeck See also arch/mips/cpu/mips32/start.S. 586 92bbd64eSDaniel Schwierzeck 587 92bbd64eSDaniel Schwierzeck CONFIG_XWAY_SWAP_BYTES 588 92bbd64eSDaniel Schwierzeck 589 92bbd64eSDaniel Schwierzeck Enable compilation of tools/xway-swap-bytes needed for Lantiq 590 92bbd64eSDaniel Schwierzeck XWAY SoCs for booting from NOR flash. The U-Boot image needs to 591 92bbd64eSDaniel Schwierzeck be swapped if a flash programmer is used. 592 92bbd64eSDaniel Schwierzeck 593 b67d8816SChristian Riesch- ARM options: 594 b67d8816SChristian Riesch CONFIG_SYS_EXCEPTION_VECTORS_HIGH 595 b67d8816SChristian Riesch 596 b67d8816SChristian Riesch Select high exception vectors of the ARM core, e.g., do not 597 b67d8816SChristian Riesch clear the V bit of the c1 register of CP15. 598 b67d8816SChristian Riesch 599 5356f545SAneesh V CONFIG_SYS_THUMB_BUILD 600 5356f545SAneesh V 601 5356f545SAneesh V Use this flag to build U-Boot using the Thumb instruction 602 5356f545SAneesh V set for ARM architectures. Thumb instruction set provides 603 5356f545SAneesh V better code density. For ARM architectures that support 604 5356f545SAneesh V Thumb2 this flag will result in Thumb2 code generated by 605 5356f545SAneesh V GCC. 606 5356f545SAneesh V 607 c5d4752cSStephen Warren CONFIG_ARM_ERRATA_716044 608 0678587fSStephen Warren CONFIG_ARM_ERRATA_742230 609 0678587fSStephen Warren CONFIG_ARM_ERRATA_743622 610 0678587fSStephen Warren CONFIG_ARM_ERRATA_751472 611 f71cbfe3SNitin Garg CONFIG_ARM_ERRATA_794072 612 b7588e3bSNitin Garg CONFIG_ARM_ERRATA_761320 613 0678587fSStephen Warren 614 0678587fSStephen Warren If set, the workarounds for these ARM errata are applied early 615 0678587fSStephen Warren during U-Boot startup. Note that these options force the 616 0678587fSStephen Warren workarounds to be applied; no CPU-type/version detection 617 0678587fSStephen Warren exists, unlike the similar options in the Linux kernel. Do not 618 0678587fSStephen Warren set these options unless they apply! 619 0678587fSStephen Warren 620 795659dcSStephen Warren- CPU timer options: 621 795659dcSStephen Warren CONFIG_SYS_HZ 622 795659dcSStephen Warren 623 795659dcSStephen Warren The frequency of the timer returned by get_timer(). 624 795659dcSStephen Warren get_timer() must operate in milliseconds and this CONFIG 625 795659dcSStephen Warren option must be set to 1000. 626 795659dcSStephen Warren 627 5da627a4Swdenk- Linux Kernel Interface: 628 c609719bSwdenk CONFIG_CLOCKS_IN_MHZ 629 c609719bSwdenk 630 c609719bSwdenk U-Boot stores all clock information in Hz 631 c609719bSwdenk internally. For binary compatibility with older Linux 632 c609719bSwdenk kernels (which expect the clocks passed in the 633 c609719bSwdenk bd_info data to be in MHz) the environment variable 634 c609719bSwdenk "clocks_in_mhz" can be defined so that U-Boot 635 c609719bSwdenk converts clock data to MHZ before passing it to the 636 c609719bSwdenk Linux kernel. 637 c609719bSwdenk When CONFIG_CLOCKS_IN_MHZ is defined, a definition of 638 c609719bSwdenk "clocks_in_mhz=1" is automatically included in the 639 c609719bSwdenk default environment. 640 c609719bSwdenk 641 5da627a4Swdenk CONFIG_MEMSIZE_IN_BYTES [relevant for MIPS only] 642 5da627a4Swdenk 643 11ccc33fSMarcel Ziswiler When transferring memsize parameter to linux, some versions 644 5da627a4Swdenk expect it to be in bytes, others in MB. 645 5da627a4Swdenk Define CONFIG_MEMSIZE_IN_BYTES to make it in bytes. 646 5da627a4Swdenk 647 fec6d9eeSGerald Van Baren CONFIG_OF_LIBFDT 648 f57f70aaSWolfgang Denk 649 f57f70aaSWolfgang Denk New kernel versions are expecting firmware settings to be 650 213bf8c8SGerald Van Baren passed using flattened device trees (based on open firmware 651 213bf8c8SGerald Van Baren concepts). 652 213bf8c8SGerald Van Baren 653 213bf8c8SGerald Van Baren CONFIG_OF_LIBFDT 654 213bf8c8SGerald Van Baren * New libfdt-based support 655 213bf8c8SGerald Van Baren * Adds the "fdt" command 656 3bb342fcSKim Phillips * The bootm command automatically updates the fdt 657 213bf8c8SGerald Van Baren 658 b55ae402SMarcel Ziswiler OF_CPU - The proper name of the cpus node (only required for 659 b55ae402SMarcel Ziswiler MPC512X and MPC5xxx based boards). 660 b55ae402SMarcel Ziswiler OF_SOC - The proper name of the soc node (only required for 661 b55ae402SMarcel Ziswiler MPC512X and MPC5xxx based boards). 662 f57f70aaSWolfgang Denk OF_TBCLK - The timebase frequency. 663 c2871f03SKumar Gala OF_STDOUT_PATH - The path to the console device 664 f57f70aaSWolfgang Denk 665 11ccc33fSMarcel Ziswiler boards with QUICC Engines require OF_QE to set UCC MAC 666 11ccc33fSMarcel Ziswiler addresses 667 3bb342fcSKim Phillips 668 4e253137SKumar Gala CONFIG_OF_BOARD_SETUP 669 4e253137SKumar Gala 670 4e253137SKumar Gala Board code has addition modification that it wants to make 671 4e253137SKumar Gala to the flat device tree before handing it off to the kernel 672 6705d81eSwdenk 673 0267768eSMatthew McClintock CONFIG_OF_BOOT_CPU 674 0267768eSMatthew McClintock 675 11ccc33fSMarcel Ziswiler This define fills in the correct boot CPU in the boot 676 0267768eSMatthew McClintock param header, the default value is zero if undefined. 677 0267768eSMatthew McClintock 678 3887c3fbSHeiko Schocher CONFIG_OF_IDE_FIXUP 679 3887c3fbSHeiko Schocher 680 3887c3fbSHeiko Schocher U-Boot can detect if an IDE device is present or not. 681 3887c3fbSHeiko Schocher If not, and this new config option is activated, U-Boot 682 3887c3fbSHeiko Schocher removes the ATA node from the DTS before booting Linux, 683 3887c3fbSHeiko Schocher so the Linux IDE driver does not probe the device and 684 3887c3fbSHeiko Schocher crash. This is needed for buggy hardware (uc101) where 685 3887c3fbSHeiko Schocher no pull down resistor is connected to the signal IDE5V_DD7. 686 3887c3fbSHeiko Schocher 687 7eb29398SIgor Grinberg CONFIG_MACH_TYPE [relevant for ARM only][mandatory] 688 7eb29398SIgor Grinberg 689 7eb29398SIgor Grinberg This setting is mandatory for all boards that have only one 690 7eb29398SIgor Grinberg machine type and must be used to specify the machine type 691 7eb29398SIgor Grinberg number as it appears in the ARM machine registry 692 7eb29398SIgor Grinberg (see http://www.arm.linux.org.uk/developer/machines/). 693 7eb29398SIgor Grinberg Only boards that have multiple machine types supported 694 7eb29398SIgor Grinberg in a single configuration file and the machine type is 695 7eb29398SIgor Grinberg runtime discoverable, do not have to use this setting. 696 7eb29398SIgor Grinberg 697 0b2f4ecaSNiklaus Giger- vxWorks boot parameters: 698 0b2f4ecaSNiklaus Giger 699 0b2f4ecaSNiklaus Giger bootvx constructs a valid bootline using the following 700 0b2f4ecaSNiklaus Giger environments variables: bootfile, ipaddr, serverip, hostname. 701 0b2f4ecaSNiklaus Giger It loads the vxWorks image pointed bootfile. 702 0b2f4ecaSNiklaus Giger 703 0b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_BOOT_DEVICE - The vxworks device name 704 0b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_MAC_PTR - Ethernet 6 byte MA -address 705 0b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_SERVERNAME - Name of the server 706 0b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_BOOT_ADDR - Address of boot parameters 707 0b2f4ecaSNiklaus Giger 708 0b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_ADD_PARAMS 709 0b2f4ecaSNiklaus Giger 710 0b2f4ecaSNiklaus Giger Add it at the end of the bootline. E.g "u=username pw=secret" 711 0b2f4ecaSNiklaus Giger 712 0b2f4ecaSNiklaus Giger Note: If a "bootargs" environment is defined, it will overwride 713 0b2f4ecaSNiklaus Giger the defaults discussed just above. 714 0b2f4ecaSNiklaus Giger 715 2c451f78SAneesh V- Cache Configuration: 716 2c451f78SAneesh V CONFIG_SYS_ICACHE_OFF - Do not enable instruction cache in U-Boot 717 2c451f78SAneesh V CONFIG_SYS_DCACHE_OFF - Do not enable data cache in U-Boot 718 2c451f78SAneesh V CONFIG_SYS_L2CACHE_OFF- Do not enable L2 cache in U-Boot 719 2c451f78SAneesh V 720 93bc2193SAneesh V- Cache Configuration for ARM: 721 93bc2193SAneesh V CONFIG_SYS_L2_PL310 - Enable support for ARM PL310 L2 cache 722 93bc2193SAneesh V controller 723 93bc2193SAneesh V CONFIG_SYS_PL310_BASE - Physical base address of PL310 724 93bc2193SAneesh V controller register space 725 93bc2193SAneesh V 726 6705d81eSwdenk- Serial Ports: 727 48d0192fSAndreas Engel CONFIG_PL010_SERIAL 728 6705d81eSwdenk 729 6705d81eSwdenk Define this if you want support for Amba PrimeCell PL010 UARTs. 730 6705d81eSwdenk 731 48d0192fSAndreas Engel CONFIG_PL011_SERIAL 732 6705d81eSwdenk 733 6705d81eSwdenk Define this if you want support for Amba PrimeCell PL011 UARTs. 734 6705d81eSwdenk 735 6705d81eSwdenk CONFIG_PL011_CLOCK 736 6705d81eSwdenk 737 6705d81eSwdenk If you have Amba PrimeCell PL011 UARTs, set this variable to 738 6705d81eSwdenk the clock speed of the UARTs. 739 6705d81eSwdenk 740 6705d81eSwdenk CONFIG_PL01x_PORTS 741 6705d81eSwdenk 742 6705d81eSwdenk If you have Amba PrimeCell PL010 or PL011 UARTs on your board, 743 6705d81eSwdenk define this to a list of base addresses for each (supported) 744 6705d81eSwdenk port. See e.g. include/configs/versatile.h 745 6705d81eSwdenk 746 910f1ae3SJohn Rigby CONFIG_PL011_SERIAL_RLCR 747 910f1ae3SJohn Rigby 748 910f1ae3SJohn Rigby Some vendor versions of PL011 serial ports (e.g. ST-Ericsson U8500) 749 910f1ae3SJohn Rigby have separate receive and transmit line control registers. Set 750 910f1ae3SJohn Rigby this variable to initialize the extra register. 751 910f1ae3SJohn Rigby 752 910f1ae3SJohn Rigby CONFIG_PL011_SERIAL_FLUSH_ON_INIT 753 910f1ae3SJohn Rigby 754 910f1ae3SJohn Rigby On some platforms (e.g. U8500) U-Boot is loaded by a second stage 755 910f1ae3SJohn Rigby boot loader that has already initialized the UART. Define this 756 910f1ae3SJohn Rigby variable to flush the UART at init time. 757 910f1ae3SJohn Rigby 758 d57dee57SKaricheri, Muralidharan CONFIG_SERIAL_HW_FLOW_CONTROL 759 d57dee57SKaricheri, Muralidharan 760 d57dee57SKaricheri, Muralidharan Define this variable to enable hw flow control in serial driver. 761 d57dee57SKaricheri, Muralidharan Current user of this option is drivers/serial/nsl16550.c driver 762 6705d81eSwdenk 763 c609719bSwdenk- Console Interface: 764 c609719bSwdenk Depending on board, define exactly one serial port 765 c609719bSwdenk (like CONFIG_8xx_CONS_SMC1, CONFIG_8xx_CONS_SMC2, 766 c609719bSwdenk CONFIG_8xx_CONS_SCC1, ...), or switch off the serial 767 c609719bSwdenk console by defining CONFIG_8xx_CONS_NONE 768 c609719bSwdenk 769 c609719bSwdenk Note: if CONFIG_8xx_CONS_NONE is defined, the serial 770 c609719bSwdenk port routines must be defined elsewhere 771 c609719bSwdenk (i.e. serial_init(), serial_getc(), ...) 772 c609719bSwdenk 773 c609719bSwdenk CONFIG_CFB_CONSOLE 774 c609719bSwdenk Enables console device for a color framebuffer. Needs following 775 c53043b7SWolfgang Denk defines (cf. smiLynxEM, i8042) 776 c609719bSwdenk VIDEO_FB_LITTLE_ENDIAN graphic memory organisation 777 c609719bSwdenk (default big endian) 778 c609719bSwdenk VIDEO_HW_RECTFILL graphic chip supports 779 c609719bSwdenk rectangle fill 780 c609719bSwdenk (cf. smiLynxEM) 781 c609719bSwdenk VIDEO_HW_BITBLT graphic chip supports 782 c609719bSwdenk bit-blit (cf. smiLynxEM) 783 c609719bSwdenk VIDEO_VISIBLE_COLS visible pixel columns 784 c609719bSwdenk (cols=pitch) 785 c609719bSwdenk VIDEO_VISIBLE_ROWS visible pixel rows 786 c609719bSwdenk VIDEO_PIXEL_SIZE bytes per pixel 787 c609719bSwdenk VIDEO_DATA_FORMAT graphic data format 788 c609719bSwdenk (0-5, cf. cfb_console.c) 789 c609719bSwdenk VIDEO_FB_ADRS framebuffer address 790 c609719bSwdenk VIDEO_KBD_INIT_FCT keyboard int fct 791 c609719bSwdenk (i.e. i8042_kbd_init()) 792 c609719bSwdenk VIDEO_TSTC_FCT test char fct 793 c609719bSwdenk (i.e. i8042_tstc) 794 c609719bSwdenk VIDEO_GETC_FCT get char fct 795 c609719bSwdenk (i.e. i8042_getc) 796 c609719bSwdenk CONFIG_CONSOLE_CURSOR cursor drawing on/off 797 c609719bSwdenk (requires blink timer 798 c609719bSwdenk cf. i8042.c) 799 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CONSOLE_BLINK_COUNT blink interval (cf. i8042.c) 800 c609719bSwdenk CONFIG_CONSOLE_TIME display time/date info in 801 c609719bSwdenk upper right corner 802 602ad3b3SJon Loeliger (requires CONFIG_CMD_DATE) 803 c609719bSwdenk CONFIG_VIDEO_LOGO display Linux logo in 804 c609719bSwdenk upper left corner 805 a6c7ad2fSwdenk CONFIG_VIDEO_BMP_LOGO use bmp_logo.h instead of 806 a6c7ad2fSwdenk linux_logo.h for logo. 807 a6c7ad2fSwdenk Requires CONFIG_VIDEO_LOGO 808 c609719bSwdenk CONFIG_CONSOLE_EXTRA_INFO 809 11ccc33fSMarcel Ziswiler additional board info beside 810 c609719bSwdenk the logo 811 c609719bSwdenk 812 33a35bbbSPali Rohár When CONFIG_CFB_CONSOLE_ANSI is defined, console will support 813 33a35bbbSPali Rohár a limited number of ANSI escape sequences (cursor control, 814 33a35bbbSPali Rohár erase functions and limited graphics rendition control). 815 33a35bbbSPali Rohár 816 c609719bSwdenk When CONFIG_CFB_CONSOLE is defined, video console is 817 c609719bSwdenk default i/o. Serial console can be forced with 818 c609719bSwdenk environment 'console=serial'. 819 c609719bSwdenk 820 a3ad8e26Swdenk When CONFIG_SILENT_CONSOLE is defined, all console 821 a3ad8e26Swdenk messages (by U-Boot and Linux!) can be silenced with 822 a3ad8e26Swdenk the "silent" environment variable. See 823 a3ad8e26Swdenk doc/README.silent for more information. 824 a3ad8e26Swdenk 825 45ae2546SHeiko Schocher CONFIG_SYS_CONSOLE_BG_COL: define the backgroundcolor, default 826 45ae2546SHeiko Schocher is 0x00. 827 45ae2546SHeiko Schocher CONFIG_SYS_CONSOLE_FG_COL: define the foregroundcolor, default 828 45ae2546SHeiko Schocher is 0xa0. 829 45ae2546SHeiko Schocher 830 c609719bSwdenk- Console Baudrate: 831 c609719bSwdenk CONFIG_BAUDRATE - in bps 832 c609719bSwdenk Select one of the baudrates listed in 833 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BAUDRATE_TABLE, see below. 834 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BRGCLK_PRESCALE, baudrate prescale 835 c609719bSwdenk 836 c92fac91SHeiko Schocher- Console Rx buffer length 837 c92fac91SHeiko Schocher With CONFIG_SYS_SMC_RXBUFLEN it is possible to define 838 c92fac91SHeiko Schocher the maximum receive buffer length for the SMC. 839 2b3f12c2SHeiko Schocher This option is actual only for 82xx and 8xx possible. 840 c92fac91SHeiko Schocher If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE 841 c92fac91SHeiko Schocher must be defined, to setup the maximum idle timeout for 842 c92fac91SHeiko Schocher the SMC. 843 c92fac91SHeiko Schocher 844 9558b48aSGraeme Russ- Pre-Console Buffer: 845 9558b48aSGraeme Russ Prior to the console being initialised (i.e. serial UART 846 9558b48aSGraeme Russ initialised etc) all console output is silently discarded. 847 9558b48aSGraeme Russ Defining CONFIG_PRE_CONSOLE_BUFFER will cause U-Boot to 848 9558b48aSGraeme Russ buffer any console messages prior to the console being 849 9558b48aSGraeme Russ initialised to a buffer of size CONFIG_PRE_CON_BUF_SZ 850 9558b48aSGraeme Russ bytes located at CONFIG_PRE_CON_BUF_ADDR. The buffer is 851 9558b48aSGraeme Russ a circular buffer, so if more than CONFIG_PRE_CON_BUF_SZ 852 9558b48aSGraeme Russ bytes are output before the console is initialised, the 853 9558b48aSGraeme Russ earlier bytes are discarded. 854 9558b48aSGraeme Russ 855 9558b48aSGraeme Russ 'Sane' compilers will generate smaller code if 856 9558b48aSGraeme Russ CONFIG_PRE_CON_BUF_SZ is a power of 2 857 9558b48aSGraeme Russ 858 046a37bdSSonny Rao- Safe printf() functions 859 046a37bdSSonny Rao Define CONFIG_SYS_VSNPRINTF to compile in safe versions of 860 046a37bdSSonny Rao the printf() functions. These are defined in 861 046a37bdSSonny Rao include/vsprintf.h and include snprintf(), vsnprintf() and 862 046a37bdSSonny Rao so on. Code size increase is approximately 300-500 bytes. 863 046a37bdSSonny Rao If this option is not given then these functions will 864 046a37bdSSonny Rao silently discard their buffer size argument - this means 865 046a37bdSSonny Rao you are not getting any overflow checking in this case. 866 046a37bdSSonny Rao 867 c609719bSwdenk- Boot Delay: CONFIG_BOOTDELAY - in seconds 868 c609719bSwdenk Delay before automatically booting the default image; 869 c609719bSwdenk set to -1 to disable autoboot. 870 93d7212fSJoe Hershberger set to -2 to autoboot with no delay and not check for abort 871 93d7212fSJoe Hershberger (even when CONFIG_ZERO_BOOTDELAY_CHECK is defined). 872 c609719bSwdenk 873 c609719bSwdenk See doc/README.autoboot for these options that 874 c609719bSwdenk work with CONFIG_BOOTDELAY. None are required. 875 c609719bSwdenk CONFIG_BOOT_RETRY_TIME 876 c609719bSwdenk CONFIG_BOOT_RETRY_MIN 877 c609719bSwdenk CONFIG_AUTOBOOT_KEYED 878 c609719bSwdenk CONFIG_AUTOBOOT_PROMPT 879 c609719bSwdenk CONFIG_AUTOBOOT_DELAY_STR 880 c609719bSwdenk CONFIG_AUTOBOOT_STOP_STR 881 c609719bSwdenk CONFIG_AUTOBOOT_DELAY_STR2 882 c609719bSwdenk CONFIG_AUTOBOOT_STOP_STR2 883 c609719bSwdenk CONFIG_ZERO_BOOTDELAY_CHECK 884 c609719bSwdenk CONFIG_RESET_TO_RETRY 885 c609719bSwdenk 886 c609719bSwdenk- Autoboot Command: 887 c609719bSwdenk CONFIG_BOOTCOMMAND 888 c609719bSwdenk Only needed when CONFIG_BOOTDELAY is enabled; 889 c609719bSwdenk define a command string that is automatically executed 890 c609719bSwdenk when no character is read on the console interface 891 c609719bSwdenk within "Boot Delay" after reset. 892 c609719bSwdenk 893 c609719bSwdenk CONFIG_BOOTARGS 894 c609719bSwdenk This can be used to pass arguments to the bootm 895 c609719bSwdenk command. The value of CONFIG_BOOTARGS goes into the 896 c609719bSwdenk environment value "bootargs". 897 c609719bSwdenk 898 c609719bSwdenk CONFIG_RAMBOOT and CONFIG_NFSBOOT 899 c609719bSwdenk The value of these goes into the environment as 900 c609719bSwdenk "ramboot" and "nfsboot" respectively, and can be used 901 c609719bSwdenk as a convenience, when switching between booting from 902 11ccc33fSMarcel Ziswiler RAM and NFS. 903 c609719bSwdenk 904 eda0ba38SHeiko Schocher- Bootcount: 905 eda0ba38SHeiko Schocher CONFIG_BOOTCOUNT_LIMIT 906 eda0ba38SHeiko Schocher Implements a mechanism for detecting a repeating reboot 907 eda0ba38SHeiko Schocher cycle, see: 908 eda0ba38SHeiko Schocher http://www.denx.de/wiki/view/DULG/UBootBootCountLimit 909 eda0ba38SHeiko Schocher 910 eda0ba38SHeiko Schocher CONFIG_BOOTCOUNT_ENV 911 eda0ba38SHeiko Schocher If no softreset save registers are found on the hardware 912 eda0ba38SHeiko Schocher "bootcount" is stored in the environment. To prevent a 913 eda0ba38SHeiko Schocher saveenv on all reboots, the environment variable 914 eda0ba38SHeiko Schocher "upgrade_available" is used. If "upgrade_available" is 915 eda0ba38SHeiko Schocher 0, "bootcount" is always 0, if "upgrade_available" is 916 eda0ba38SHeiko Schocher 1 "bootcount" is incremented in the environment. 917 eda0ba38SHeiko Schocher So the Userspace Applikation must set the "upgrade_available" 918 eda0ba38SHeiko Schocher and "bootcount" variable to 0, if a boot was successfully. 919 eda0ba38SHeiko Schocher 920 c609719bSwdenk- Pre-Boot Commands: 921 c609719bSwdenk CONFIG_PREBOOT 922 c609719bSwdenk 923 c609719bSwdenk When this option is #defined, the existence of the 924 c609719bSwdenk environment variable "preboot" will be checked 925 c609719bSwdenk immediately before starting the CONFIG_BOOTDELAY 926 c609719bSwdenk countdown and/or running the auto-boot command resp. 927 c609719bSwdenk entering interactive mode. 928 c609719bSwdenk 929 c609719bSwdenk This feature is especially useful when "preboot" is 930 c609719bSwdenk automatically generated or modified. For an example 931 c609719bSwdenk see the LWMON board specific code: here "preboot" is 932 c609719bSwdenk modified when the user holds down a certain 933 c609719bSwdenk combination of keys on the (special) keyboard when 934 c609719bSwdenk booting the systems 935 c609719bSwdenk 936 c609719bSwdenk- Serial Download Echo Mode: 937 c609719bSwdenk CONFIG_LOADS_ECHO 938 c609719bSwdenk If defined to 1, all characters received during a 939 c609719bSwdenk serial download (using the "loads" command) are 940 c609719bSwdenk echoed back. This might be needed by some terminal 941 c609719bSwdenk emulations (like "cu"), but may as well just take 942 c609719bSwdenk time on others. This setting #define's the initial 943 c609719bSwdenk value of the "loads_echo" environment variable. 944 c609719bSwdenk 945 602ad3b3SJon Loeliger- Kgdb Serial Baudrate: (if CONFIG_CMD_KGDB is defined) 946 c609719bSwdenk CONFIG_KGDB_BAUDRATE 947 c609719bSwdenk Select one of the baudrates listed in 948 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BAUDRATE_TABLE, see below. 949 c609719bSwdenk 950 c609719bSwdenk- Monitor Functions: 951 602ad3b3SJon Loeliger Monitor commands can be included or excluded 952 602ad3b3SJon Loeliger from the build by using the #include files 953 c6c621bdSStephen Warren <config_cmd_all.h> and #undef'ing unwanted 954 c6c621bdSStephen Warren commands, or using <config_cmd_default.h> 955 602ad3b3SJon Loeliger and augmenting with additional #define's 956 602ad3b3SJon Loeliger for wanted commands. 957 c609719bSwdenk 958 602ad3b3SJon Loeliger The default command configuration includes all commands 959 602ad3b3SJon Loeliger except those marked below with a "*". 960 602ad3b3SJon Loeliger 961 b401b73dSMarek Vasut CONFIG_CMD_AES AES 128 CBC encrypt/decrypt 962 602ad3b3SJon Loeliger CONFIG_CMD_ASKENV * ask for env variable 963 602ad3b3SJon Loeliger CONFIG_CMD_BDI bdinfo 964 602ad3b3SJon Loeliger CONFIG_CMD_BEDBUG * Include BedBug Debugger 965 602ad3b3SJon Loeliger CONFIG_CMD_BMP * BMP support 966 602ad3b3SJon Loeliger CONFIG_CMD_BSP * Board specific commands 967 602ad3b3SJon Loeliger CONFIG_CMD_BOOTD bootd 968 d2b2ffe3STom Rini CONFIG_CMD_BOOTI * ARM64 Linux kernel Image support 969 602ad3b3SJon Loeliger CONFIG_CMD_CACHE * icache, dcache 970 08d0d6f3SMichal Simek CONFIG_CMD_CLK * clock command support 971 602ad3b3SJon Loeliger CONFIG_CMD_CONSOLE coninfo 972 710b9938SMike Frysinger CONFIG_CMD_CRC32 * crc32 973 602ad3b3SJon Loeliger CONFIG_CMD_DATE * support for RTC, date/time... 974 602ad3b3SJon Loeliger CONFIG_CMD_DHCP * DHCP support 975 602ad3b3SJon Loeliger CONFIG_CMD_DIAG * Diagnostics 976 a7c93104SPeter Tyser CONFIG_CMD_DS4510 * ds4510 I2C gpio commands 977 a7c93104SPeter Tyser CONFIG_CMD_DS4510_INFO * ds4510 I2C info command 978 a7c93104SPeter Tyser CONFIG_CMD_DS4510_MEM * ds4510 I2C eeprom/sram commansd 979 a7c93104SPeter Tyser CONFIG_CMD_DS4510_RST * ds4510 I2C rst command 980 602ad3b3SJon Loeliger CONFIG_CMD_DTT * Digital Therm and Thermostat 981 602ad3b3SJon Loeliger CONFIG_CMD_ECHO echo arguments 982 246c6922SPeter Tyser CONFIG_CMD_EDITENV edit env variable 983 602ad3b3SJon Loeliger CONFIG_CMD_EEPROM * EEPROM read/write support 984 602ad3b3SJon Loeliger CONFIG_CMD_ELF * bootelf, bootvx 985 5e2b3e0cSJoe Hershberger CONFIG_CMD_ENV_CALLBACK * display details about env callbacks 986 fffad71bSJoe Hershberger CONFIG_CMD_ENV_FLAGS * display details about env flags 987 88733e2cSAndrew Ruder CONFIG_CMD_ENV_EXISTS * check existence of env variable 988 0c79cda0SMike Frysinger CONFIG_CMD_EXPORTENV * export the environment 989 03e2ecf6SStephen Warren CONFIG_CMD_EXT2 * ext2 command support 990 03e2ecf6SStephen Warren CONFIG_CMD_EXT4 * ext4 command support 991 16f4d933SStephen Warren CONFIG_CMD_FS_GENERIC * filesystem commands (e.g. load, ls) 992 16f4d933SStephen Warren that work for multiple fs types 993 bdab39d3SMike Frysinger CONFIG_CMD_SAVEENV saveenv 994 602ad3b3SJon Loeliger CONFIG_CMD_FDC * Floppy Disk Support 995 03e2ecf6SStephen Warren CONFIG_CMD_FAT * FAT command support 996 602ad3b3SJon Loeliger CONFIG_CMD_FLASH flinfo, erase, protect 997 602ad3b3SJon Loeliger CONFIG_CMD_FPGA FPGA device initialization support 998 4d98b5c8SVincent Stehlé CONFIG_CMD_FUSE * Device fuse support 999 53fdc7efSAnton Staaf CONFIG_CMD_GETTIME * Get time since boot 1000 a641b979SMike Frysinger CONFIG_CMD_GO * the 'go' command (exec code) 1001 a000b795SKim Phillips CONFIG_CMD_GREPENV * search environment 1002 bf36c5d5SSimon Glass CONFIG_CMD_HASH * calculate hash / digest 1003 602ad3b3SJon Loeliger CONFIG_CMD_HWFLOW * RTS/CTS hw flow control 1004 602ad3b3SJon Loeliger CONFIG_CMD_I2C * I2C serial bus support 1005 602ad3b3SJon Loeliger CONFIG_CMD_IDE * IDE harddisk support 1006 602ad3b3SJon Loeliger CONFIG_CMD_IMI iminfo 1007 8fdf1e0fSVipin Kumar CONFIG_CMD_IMLS List all images found in NOR flash 1008 4d98b5c8SVincent Stehlé CONFIG_CMD_IMLS_NAND * List all images found in NAND flash 1009 602ad3b3SJon Loeliger CONFIG_CMD_IMMAP * IMMR dump support 1010 aa53233aSSimon Glass CONFIG_CMD_IOTRACE * I/O tracing for debugging 1011 0c79cda0SMike Frysinger CONFIG_CMD_IMPORTENV * import an environment 1012 c167cc02SJoe Hershberger CONFIG_CMD_INI * import data from an ini file into the env 1013 602ad3b3SJon Loeliger CONFIG_CMD_IRQ * irqinfo 1014 602ad3b3SJon Loeliger CONFIG_CMD_ITEST Integer/string test of 2 values 1015 602ad3b3SJon Loeliger CONFIG_CMD_JFFS2 * JFFS2 Support 1016 602ad3b3SJon Loeliger CONFIG_CMD_KGDB * kgdb 1017 4d98b5c8SVincent Stehlé CONFIG_CMD_LDRINFO * ldrinfo (display Blackfin loader) 1018 d22c338eSJoe Hershberger CONFIG_CMD_LINK_LOCAL * link-local IP address auto-configuration 1019 d22c338eSJoe Hershberger (169.254.*.*) 1020 602ad3b3SJon Loeliger CONFIG_CMD_LOADB loadb 1021 602ad3b3SJon Loeliger CONFIG_CMD_LOADS loads 1022 4d98b5c8SVincent Stehlé CONFIG_CMD_MD5SUM * print md5 message digest 1023 02c9aa1dSRobin Getz (requires CONFIG_CMD_MEMORY and CONFIG_MD5) 1024 15a33e49SSimon Glass CONFIG_CMD_MEMINFO * Display detailed memory information 1025 602ad3b3SJon Loeliger CONFIG_CMD_MEMORY md, mm, nm, mw, cp, cmp, crc, base, 1026 a2681707SWolfgang Denk loop, loopw 1027 4d98b5c8SVincent Stehlé CONFIG_CMD_MEMTEST * mtest 1028 602ad3b3SJon Loeliger CONFIG_CMD_MISC Misc functions like sleep etc 1029 602ad3b3SJon Loeliger CONFIG_CMD_MMC * MMC memory mapped support 1030 602ad3b3SJon Loeliger CONFIG_CMD_MII * MII utility commands 1031 68d7d651SStefan Roese CONFIG_CMD_MTDPARTS * MTD partition support 1032 602ad3b3SJon Loeliger CONFIG_CMD_NAND * NAND support 1033 602ad3b3SJon Loeliger CONFIG_CMD_NET bootp, tftpboot, rarpboot 1034 4d98b5c8SVincent Stehlé CONFIG_CMD_NFS NFS support 1035 e92739d3SPeter Tyser CONFIG_CMD_PCA953X * PCA953x I2C gpio commands 1036 e92739d3SPeter Tyser CONFIG_CMD_PCA953X_INFO * PCA953x I2C gpio info command 1037 602ad3b3SJon Loeliger CONFIG_CMD_PCI * pciinfo 1038 602ad3b3SJon Loeliger CONFIG_CMD_PCMCIA * PCMCIA support 1039 602ad3b3SJon Loeliger CONFIG_CMD_PING * send ICMP ECHO_REQUEST to network 1040 602ad3b3SJon Loeliger host 1041 602ad3b3SJon Loeliger CONFIG_CMD_PORTIO * Port I/O 1042 ff048ea9SKenneth Waters CONFIG_CMD_READ * Read raw data from partition 1043 602ad3b3SJon Loeliger CONFIG_CMD_REGINFO * Register dump 1044 602ad3b3SJon Loeliger CONFIG_CMD_RUN run command in env variable 1045 d304931fSSimon Glass CONFIG_CMD_SANDBOX * sb command to access sandbox features 1046 602ad3b3SJon Loeliger CONFIG_CMD_SAVES * save S record dump 1047 602ad3b3SJon Loeliger CONFIG_CMD_SCSI * SCSI Support 1048 602ad3b3SJon Loeliger CONFIG_CMD_SDRAM * print SDRAM configuration information 1049 602ad3b3SJon Loeliger (requires CONFIG_CMD_I2C) 1050 602ad3b3SJon Loeliger CONFIG_CMD_SETGETDCR Support for DCR Register access 1051 602ad3b3SJon Loeliger (4xx only) 1052 f61ec45eSEric Nelson CONFIG_CMD_SF * Read/write/erase SPI NOR flash 1053 4d98b5c8SVincent Stehlé CONFIG_CMD_SHA1SUM * print sha1 memory digest 1054 02c9aa1dSRobin Getz (requires CONFIG_CMD_MEMORY) 1055 7d861d95SBob Liu CONFIG_CMD_SOFTSWITCH * Soft switch setting command for BF60x 1056 74de7aefSWolfgang Denk CONFIG_CMD_SOURCE "source" command Support 1057 602ad3b3SJon Loeliger CONFIG_CMD_SPI * SPI serial bus support 1058 7a83af07SLuca Ceresoli CONFIG_CMD_TFTPSRV * TFTP transfer in server mode 1059 1fb7cd49SSimon Glass CONFIG_CMD_TFTPPUT * TFTP put command (upload) 1060 da83bcd7SJoe Hershberger CONFIG_CMD_TIME * run command and report execution time (ARM specific) 1061 da83bcd7SJoe Hershberger CONFIG_CMD_TIMER * access to the system tick timer 1062 602ad3b3SJon Loeliger CONFIG_CMD_USB * USB support 1063 602ad3b3SJon Loeliger CONFIG_CMD_CDP * Cisco Discover Protocol support 1064 c8339f51SMarek Vasut CONFIG_CMD_MFSL * Microblaze FSL support 1065 4d98b5c8SVincent Stehlé CONFIG_CMD_XIMG Load part of Multi Image 1066 89c8230dSPrzemyslaw Marczak CONFIG_CMD_UUID * Generate random UUID or GUID string 1067 c609719bSwdenk 1068 c609719bSwdenk EXAMPLE: If you want all functions except of network 1069 c609719bSwdenk support you can write: 1070 c609719bSwdenk 1071 602ad3b3SJon Loeliger #include "config_cmd_all.h" 1072 602ad3b3SJon Loeliger #undef CONFIG_CMD_NET 1073 c609719bSwdenk 1074 213bf8c8SGerald Van Baren Other Commands: 1075 213bf8c8SGerald Van Baren fdt (flattened device tree) command: CONFIG_OF_LIBFDT 1076 c609719bSwdenk 1077 c609719bSwdenk Note: Don't enable the "icache" and "dcache" commands 1078 602ad3b3SJon Loeliger (configuration option CONFIG_CMD_CACHE) unless you know 1079 c609719bSwdenk what you (and your U-Boot users) are doing. Data 1080 c609719bSwdenk cache cannot be enabled on systems like the 8xx or 1081 c609719bSwdenk 8260 (where accesses to the IMMR region must be 1082 c609719bSwdenk uncached), and it cannot be disabled on all other 1083 c609719bSwdenk systems where we (mis-) use the data cache to hold an 1084 c609719bSwdenk initial stack and some data. 1085 c609719bSwdenk 1086 c609719bSwdenk 1087 c609719bSwdenk XXX - this list needs to get updated! 1088 c609719bSwdenk 1089 a5ecbe62SWolfgang Denk- Regular expression support: 1090 a5ecbe62SWolfgang Denk CONFIG_REGEX 1091 a5ecbe62SWolfgang Denk If this variable is defined, U-Boot is linked against 1092 a5ecbe62SWolfgang Denk the SLRE (Super Light Regular Expression) library, 1093 a5ecbe62SWolfgang Denk which adds regex support to some commands, as for 1094 a5ecbe62SWolfgang Denk example "env grep" and "setexpr". 1095 a5ecbe62SWolfgang Denk 1096 45ba8077SSimon Glass- Device tree: 1097 45ba8077SSimon Glass CONFIG_OF_CONTROL 1098 45ba8077SSimon Glass If this variable is defined, U-Boot will use a device tree 1099 45ba8077SSimon Glass to configure its devices, instead of relying on statically 1100 45ba8077SSimon Glass compiled #defines in the board file. This option is 1101 45ba8077SSimon Glass experimental and only available on a few boards. The device 1102 45ba8077SSimon Glass tree is available in the global data as gd->fdt_blob. 1103 45ba8077SSimon Glass 1104 2c0f79e4SSimon Glass U-Boot needs to get its device tree from somewhere. This can 1105 2c0f79e4SSimon Glass be done using one of the two options below: 1106 bbb0b128SSimon Glass 1107 bbb0b128SSimon Glass CONFIG_OF_EMBED 1108 bbb0b128SSimon Glass If this variable is defined, U-Boot will embed a device tree 1109 bbb0b128SSimon Glass binary in its image. This device tree file should be in the 1110 bbb0b128SSimon Glass board directory and called <soc>-<board>.dts. The binary file 1111 bbb0b128SSimon Glass is then picked up in board_init_f() and made available through 1112 bbb0b128SSimon Glass the global data structure as gd->blob. 1113 45ba8077SSimon Glass 1114 2c0f79e4SSimon Glass CONFIG_OF_SEPARATE 1115 2c0f79e4SSimon Glass If this variable is defined, U-Boot will build a device tree 1116 2c0f79e4SSimon Glass binary. It will be called u-boot.dtb. Architecture-specific 1117 2c0f79e4SSimon Glass code will locate it at run-time. Generally this works by: 1118 2c0f79e4SSimon Glass 1119 2c0f79e4SSimon Glass cat u-boot.bin u-boot.dtb >image.bin 1120 2c0f79e4SSimon Glass 1121 2c0f79e4SSimon Glass and in fact, U-Boot does this for you, creating a file called 1122 2c0f79e4SSimon Glass u-boot-dtb.bin which is useful in the common case. You can 1123 2c0f79e4SSimon Glass still use the individual files if you need something more 1124 2c0f79e4SSimon Glass exotic. 1125 2c0f79e4SSimon Glass 1126 c609719bSwdenk- Watchdog: 1127 c609719bSwdenk CONFIG_WATCHDOG 1128 c609719bSwdenk If this variable is defined, it enables watchdog 1129 6abe6fb6SDetlev Zundel support for the SoC. There must be support in the SoC 1130 6abe6fb6SDetlev Zundel specific code for a watchdog. For the 8xx and 8260 1131 6abe6fb6SDetlev Zundel CPUs, the SIU Watchdog feature is enabled in the SYPCR 1132 6abe6fb6SDetlev Zundel register. When supported for a specific SoC is 1133 6abe6fb6SDetlev Zundel available, then no further board specific code should 1134 6abe6fb6SDetlev Zundel be needed to use it. 1135 6abe6fb6SDetlev Zundel 1136 6abe6fb6SDetlev Zundel CONFIG_HW_WATCHDOG 1137 6abe6fb6SDetlev Zundel When using a watchdog circuitry external to the used 1138 6abe6fb6SDetlev Zundel SoC, then define this variable and provide board 1139 6abe6fb6SDetlev Zundel specific code for the "hw_watchdog_reset" function. 1140 c609719bSwdenk 1141 c1551ea8Sstroese- U-Boot Version: 1142 c1551ea8Sstroese CONFIG_VERSION_VARIABLE 1143 c1551ea8Sstroese If this variable is defined, an environment variable 1144 c1551ea8Sstroese named "ver" is created by U-Boot showing the U-Boot 1145 c1551ea8Sstroese version as printed by the "version" command. 1146 a1ea8e51SBenoît Thébaudeau Any change to this variable will be reverted at the 1147 a1ea8e51SBenoît Thébaudeau next reset. 1148 c1551ea8Sstroese 1149 c609719bSwdenk- Real-Time Clock: 1150 c609719bSwdenk 1151 602ad3b3SJon Loeliger When CONFIG_CMD_DATE is selected, the type of the RTC 1152 c609719bSwdenk has to be selected, too. Define exactly one of the 1153 c609719bSwdenk following options: 1154 c609719bSwdenk 1155 c609719bSwdenk CONFIG_RTC_MPC8xx - use internal RTC of MPC8xx 1156 c609719bSwdenk CONFIG_RTC_PCF8563 - use Philips PCF8563 RTC 1157 4e8b7544SFabio Estevam CONFIG_RTC_MC13XXX - use MC13783 or MC13892 RTC 1158 c609719bSwdenk CONFIG_RTC_MC146818 - use MC146818 RTC 1159 1cb8e980Swdenk CONFIG_RTC_DS1307 - use Maxim, Inc. DS1307 RTC 1160 c609719bSwdenk CONFIG_RTC_DS1337 - use Maxim, Inc. DS1337 RTC 1161 7f70e853Swdenk CONFIG_RTC_DS1338 - use Maxim, Inc. DS1338 RTC 1162 412921d2SMarkus Niebel CONFIG_RTC_DS1339 - use Maxim, Inc. DS1339 RTC 1163 3bac3513Swdenk CONFIG_RTC_DS164x - use Dallas DS164x RTC 1164 9536dfccSTor Krill CONFIG_RTC_ISL1208 - use Intersil ISL1208 RTC 1165 4c0d4c3bSwdenk CONFIG_RTC_MAX6900 - use Maxim, Inc. MAX6900 RTC 1166 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_RTC_DS1337_NOOSC - Turn off the OSC output for DS1337 1167 71d19f30SHeiko Schocher CONFIG_SYS_RV3029_TCR - enable trickle charger on 1168 71d19f30SHeiko Schocher RV3029 RTC. 1169 c609719bSwdenk 1170 b37c7e5eSwdenk Note that if the RTC uses I2C, then the I2C interface 1171 b37c7e5eSwdenk must also be configured. See I2C Support, below. 1172 b37c7e5eSwdenk 1173 e92739d3SPeter Tyser- GPIO Support: 1174 e92739d3SPeter Tyser CONFIG_PCA953X - use NXP's PCA953X series I2C GPIO 1175 e92739d3SPeter Tyser 1176 5dec49caSChris Packham The CONFIG_SYS_I2C_PCA953X_WIDTH option specifies a list of 1177 5dec49caSChris Packham chip-ngpio pairs that tell the PCA953X driver the number of 1178 5dec49caSChris Packham pins supported by a particular chip. 1179 5dec49caSChris Packham 1180 e92739d3SPeter Tyser Note that if the GPIO device uses I2C, then the I2C interface 1181 e92739d3SPeter Tyser must also be configured. See I2C Support, below. 1182 e92739d3SPeter Tyser 1183 aa53233aSSimon Glass- I/O tracing: 1184 aa53233aSSimon Glass When CONFIG_IO_TRACE is selected, U-Boot intercepts all I/O 1185 aa53233aSSimon Glass accesses and can checksum them or write a list of them out 1186 aa53233aSSimon Glass to memory. See the 'iotrace' command for details. This is 1187 aa53233aSSimon Glass useful for testing device drivers since it can confirm that 1188 aa53233aSSimon Glass the driver behaves the same way before and after a code 1189 aa53233aSSimon Glass change. Currently this is supported on sandbox and arm. To 1190 aa53233aSSimon Glass add support for your architecture, add '#include <iotrace.h>' 1191 aa53233aSSimon Glass to the bottom of arch/<arch>/include/asm/io.h and test. 1192 aa53233aSSimon Glass 1193 aa53233aSSimon Glass Example output from the 'iotrace stats' command is below. 1194 aa53233aSSimon Glass Note that if the trace buffer is exhausted, the checksum will 1195 aa53233aSSimon Glass still continue to operate. 1196 aa53233aSSimon Glass 1197 aa53233aSSimon Glass iotrace is enabled 1198 aa53233aSSimon Glass Start: 10000000 (buffer start address) 1199 aa53233aSSimon Glass Size: 00010000 (buffer size) 1200 aa53233aSSimon Glass Offset: 00000120 (current buffer offset) 1201 aa53233aSSimon Glass Output: 10000120 (start + offset) 1202 aa53233aSSimon Glass Count: 00000018 (number of trace records) 1203 aa53233aSSimon Glass CRC32: 9526fb66 (CRC32 of all trace records) 1204 aa53233aSSimon Glass 1205 c609719bSwdenk- Timestamp Support: 1206 c609719bSwdenk 1207 c609719bSwdenk When CONFIG_TIMESTAMP is selected, the timestamp 1208 c609719bSwdenk (date and time) of an image is printed by image 1209 c609719bSwdenk commands like bootm or iminfo. This option is 1210 602ad3b3SJon Loeliger automatically enabled when you select CONFIG_CMD_DATE . 1211 c609719bSwdenk 1212 923c46f9SKarl O. Pinc- Partition Labels (disklabels) Supported: 1213 923c46f9SKarl O. Pinc Zero or more of the following: 1214 923c46f9SKarl O. Pinc CONFIG_MAC_PARTITION Apple's MacOS partition table. 1215 923c46f9SKarl O. Pinc CONFIG_DOS_PARTITION MS Dos partition table, traditional on the 1216 923c46f9SKarl O. Pinc Intel architecture, USB sticks, etc. 1217 923c46f9SKarl O. Pinc CONFIG_ISO_PARTITION ISO partition table, used on CDROM etc. 1218 923c46f9SKarl O. Pinc CONFIG_EFI_PARTITION GPT partition table, common when EFI is the 1219 923c46f9SKarl O. Pinc bootloader. Note 2TB partition limit; see 1220 923c46f9SKarl O. Pinc disk/part_efi.c 1221 923c46f9SKarl O. Pinc CONFIG_MTD_PARTITIONS Memory Technology Device partition table. 1222 c609719bSwdenk 1223 602ad3b3SJon Loeliger If IDE or SCSI support is enabled (CONFIG_CMD_IDE or 1224 218ca724SWolfgang Denk CONFIG_CMD_SCSI) you must configure support for at 1225 923c46f9SKarl O. Pinc least one non-MTD partition type as well. 1226 c609719bSwdenk 1227 c609719bSwdenk- IDE Reset method: 1228 4d13cbadSwdenk CONFIG_IDE_RESET_ROUTINE - this is defined in several 1229 4d13cbadSwdenk board configurations files but used nowhere! 1230 c609719bSwdenk 1231 4d13cbadSwdenk CONFIG_IDE_RESET - is this is defined, IDE Reset will 1232 4d13cbadSwdenk be performed by calling the function 1233 4d13cbadSwdenk ide_set_reset(int reset) 1234 4d13cbadSwdenk which has to be defined in a board specific file 1235 c609719bSwdenk 1236 c609719bSwdenk- ATAPI Support: 1237 c609719bSwdenk CONFIG_ATAPI 1238 c609719bSwdenk 1239 c609719bSwdenk Set this to enable ATAPI support. 1240 c609719bSwdenk 1241 c40b2956Swdenk- LBA48 Support 1242 c40b2956Swdenk CONFIG_LBA48 1243 c40b2956Swdenk 1244 c40b2956Swdenk Set this to enable support for disks larger than 137GB 1245 4b142febSHeiko Schocher Also look at CONFIG_SYS_64BIT_LBA. 1246 c40b2956Swdenk Whithout these , LBA48 support uses 32bit variables and will 'only' 1247 c40b2956Swdenk support disks up to 2.1TB. 1248 c40b2956Swdenk 1249 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_64BIT_LBA: 1250 c40b2956Swdenk When enabled, makes the IDE subsystem use 64bit sector addresses. 1251 c40b2956Swdenk Default is 32bit. 1252 c40b2956Swdenk 1253 c609719bSwdenk- SCSI Support: 1254 c609719bSwdenk At the moment only there is only support for the 1255 c609719bSwdenk SYM53C8XX SCSI controller; define 1256 c609719bSwdenk CONFIG_SCSI_SYM53C8XX to enable it. 1257 c609719bSwdenk 1258 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_LUN [8], CONFIG_SYS_SCSI_MAX_SCSI_ID [7] and 1259 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_DEVICE [CONFIG_SYS_SCSI_MAX_SCSI_ID * 1260 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_LUN] can be adjusted to define the 1261 c609719bSwdenk maximum numbers of LUNs, SCSI ID's and target 1262 c609719bSwdenk devices. 1263 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_SYM53C8XX_CCF to fix clock timing (80Mhz) 1264 c609719bSwdenk 1265 447c031bSStefan Reinauer The environment variable 'scsidevs' is set to the number of 1266 447c031bSStefan Reinauer SCSI devices found during the last scan. 1267 447c031bSStefan Reinauer 1268 c609719bSwdenk- NETWORK Support (PCI): 1269 682011ffSwdenk CONFIG_E1000 1270 ce5207e1SKyle Moffett Support for Intel 8254x/8257x gigabit chips. 1271 ce5207e1SKyle Moffett 1272 ce5207e1SKyle Moffett CONFIG_E1000_SPI 1273 ce5207e1SKyle Moffett Utility code for direct access to the SPI bus on Intel 8257x. 1274 ce5207e1SKyle Moffett This does not do anything useful unless you set at least one 1275 ce5207e1SKyle Moffett of CONFIG_CMD_E1000 or CONFIG_E1000_SPI_GENERIC. 1276 ce5207e1SKyle Moffett 1277 ce5207e1SKyle Moffett CONFIG_E1000_SPI_GENERIC 1278 ce5207e1SKyle Moffett Allow generic access to the SPI bus on the Intel 8257x, for 1279 ce5207e1SKyle Moffett example with the "sspi" command. 1280 ce5207e1SKyle Moffett 1281 ce5207e1SKyle Moffett CONFIG_CMD_E1000 1282 ce5207e1SKyle Moffett Management command for E1000 devices. When used on devices 1283 ce5207e1SKyle Moffett with SPI support you can reprogram the EEPROM from U-Boot. 1284 682011ffSwdenk 1285 ac3315c2SAndre Schwarz CONFIG_E1000_FALLBACK_MAC 1286 11ccc33fSMarcel Ziswiler default MAC for empty EEPROM after production. 1287 ac3315c2SAndre Schwarz 1288 c609719bSwdenk CONFIG_EEPRO100 1289 c609719bSwdenk Support for Intel 82557/82559/82559ER chips. 1290 11ccc33fSMarcel Ziswiler Optional CONFIG_EEPRO100_SROM_WRITE enables EEPROM 1291 c609719bSwdenk write routine for first time initialisation. 1292 c609719bSwdenk 1293 c609719bSwdenk CONFIG_TULIP 1294 c609719bSwdenk Support for Digital 2114x chips. 1295 c609719bSwdenk Optional CONFIG_TULIP_SELECT_MEDIA for board specific 1296 c609719bSwdenk modem chip initialisation (KS8761/QS6611). 1297 c609719bSwdenk 1298 c609719bSwdenk CONFIG_NATSEMI 1299 c609719bSwdenk Support for National dp83815 chips. 1300 c609719bSwdenk 1301 c609719bSwdenk CONFIG_NS8382X 1302 c609719bSwdenk Support for National dp8382[01] gigabit chips. 1303 c609719bSwdenk 1304 45219c46Swdenk- NETWORK Support (other): 1305 45219c46Swdenk 1306 c041e9d2SJens Scharsig CONFIG_DRIVER_AT91EMAC 1307 c041e9d2SJens Scharsig Support for AT91RM9200 EMAC. 1308 c041e9d2SJens Scharsig 1309 c041e9d2SJens Scharsig CONFIG_RMII 1310 c041e9d2SJens Scharsig Define this to use reduced MII inteface 1311 c041e9d2SJens Scharsig 1312 c041e9d2SJens Scharsig CONFIG_DRIVER_AT91EMAC_QUIET 1313 c041e9d2SJens Scharsig If this defined, the driver is quiet. 1314 c041e9d2SJens Scharsig The driver doen't show link status messages. 1315 c041e9d2SJens Scharsig 1316 efdd7319SRob Herring CONFIG_CALXEDA_XGMAC 1317 efdd7319SRob Herring Support for the Calxeda XGMAC device 1318 efdd7319SRob Herring 1319 3bb46d23SAshok CONFIG_LAN91C96 1320 45219c46Swdenk Support for SMSC's LAN91C96 chips. 1321 45219c46Swdenk 1322 45219c46Swdenk CONFIG_LAN91C96_BASE 1323 45219c46Swdenk Define this to hold the physical address 1324 45219c46Swdenk of the LAN91C96's I/O space 1325 45219c46Swdenk 1326 45219c46Swdenk CONFIG_LAN91C96_USE_32_BIT 1327 45219c46Swdenk Define this to enable 32 bit addressing 1328 45219c46Swdenk 1329 3bb46d23SAshok CONFIG_SMC91111 1330 f39748aeSwdenk Support for SMSC's LAN91C111 chip 1331 f39748aeSwdenk 1332 f39748aeSwdenk CONFIG_SMC91111_BASE 1333 f39748aeSwdenk Define this to hold the physical address 1334 f39748aeSwdenk of the device (I/O space) 1335 f39748aeSwdenk 1336 f39748aeSwdenk CONFIG_SMC_USE_32_BIT 1337 f39748aeSwdenk Define this if data bus is 32 bits 1338 f39748aeSwdenk 1339 f39748aeSwdenk CONFIG_SMC_USE_IOFUNCS 1340 f39748aeSwdenk Define this to use i/o functions instead of macros 1341 f39748aeSwdenk (some hardware wont work with macros) 1342 f39748aeSwdenk 1343 dc02badaSHeiko Schocher CONFIG_DRIVER_TI_EMAC 1344 dc02badaSHeiko Schocher Support for davinci emac 1345 dc02badaSHeiko Schocher 1346 dc02badaSHeiko Schocher CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT 1347 dc02badaSHeiko Schocher Define this if you have more then 3 PHYs. 1348 dc02badaSHeiko Schocher 1349 b3dbf4a5SMacpaul Lin CONFIG_FTGMAC100 1350 b3dbf4a5SMacpaul Lin Support for Faraday's FTGMAC100 Gigabit SoC Ethernet 1351 b3dbf4a5SMacpaul Lin 1352 b3dbf4a5SMacpaul Lin CONFIG_FTGMAC100_EGIGA 1353 b3dbf4a5SMacpaul Lin Define this to use GE link update with gigabit PHY. 1354 b3dbf4a5SMacpaul Lin Define this if FTGMAC100 is connected to gigabit PHY. 1355 b3dbf4a5SMacpaul Lin If your system has 10/100 PHY only, it might not occur 1356 b3dbf4a5SMacpaul Lin wrong behavior. Because PHY usually return timeout or 1357 b3dbf4a5SMacpaul Lin useless data when polling gigabit status and gigabit 1358 b3dbf4a5SMacpaul Lin control registers. This behavior won't affect the 1359 b3dbf4a5SMacpaul Lin correctnessof 10/100 link speed update. 1360 b3dbf4a5SMacpaul Lin 1361 c2fff331SMike Rapoport CONFIG_SMC911X 1362 557b377dSJens Gehrlein Support for SMSC's LAN911x and LAN921x chips 1363 557b377dSJens Gehrlein 1364 c2fff331SMike Rapoport CONFIG_SMC911X_BASE 1365 557b377dSJens Gehrlein Define this to hold the physical address 1366 557b377dSJens Gehrlein of the device (I/O space) 1367 557b377dSJens Gehrlein 1368 c2fff331SMike Rapoport CONFIG_SMC911X_32_BIT 1369 557b377dSJens Gehrlein Define this if data bus is 32 bits 1370 557b377dSJens Gehrlein 1371 c2fff331SMike Rapoport CONFIG_SMC911X_16_BIT 1372 557b377dSJens Gehrlein Define this if data bus is 16 bits. If your processor 1373 557b377dSJens Gehrlein automatically converts one 32 bit word to two 16 bit 1374 c2fff331SMike Rapoport words you may also try CONFIG_SMC911X_32_BIT. 1375 557b377dSJens Gehrlein 1376 3d0075faSYoshihiro Shimoda CONFIG_SH_ETHER 1377 3d0075faSYoshihiro Shimoda Support for Renesas on-chip Ethernet controller 1378 3d0075faSYoshihiro Shimoda 1379 3d0075faSYoshihiro Shimoda CONFIG_SH_ETHER_USE_PORT 1380 3d0075faSYoshihiro Shimoda Define the number of ports to be used 1381 3d0075faSYoshihiro Shimoda 1382 3d0075faSYoshihiro Shimoda CONFIG_SH_ETHER_PHY_ADDR 1383 3d0075faSYoshihiro Shimoda Define the ETH PHY's address 1384 3d0075faSYoshihiro Shimoda 1385 68260aabSYoshihiro Shimoda CONFIG_SH_ETHER_CACHE_WRITEBACK 1386 68260aabSYoshihiro Shimoda If this option is set, the driver enables cache flush. 1387 68260aabSYoshihiro Shimoda 1388 b2f97cf2SHeiko Schocher- PWM Support: 1389 b2f97cf2SHeiko Schocher CONFIG_PWM_IMX 1390 b2f97cf2SHeiko Schocher Support for PWM modul on the imx6. 1391 b2f97cf2SHeiko Schocher 1392 5e124724SVadim Bendebury- TPM Support: 1393 90899cc0SChe-liang Chiou CONFIG_TPM 1394 90899cc0SChe-liang Chiou Support TPM devices. 1395 90899cc0SChe-liang Chiou 1396 1b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C 1397 1b393db5STom Wai-Hong Tam Support for i2c bus TPM devices. Only one device 1398 1b393db5STom Wai-Hong Tam per system is supported at this time. 1399 1b393db5STom Wai-Hong Tam 1400 1b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_BUS_NUMBER 1401 1b393db5STom Wai-Hong Tam Define the the i2c bus number for the TPM device 1402 1b393db5STom Wai-Hong Tam 1403 1b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_SLAVE_ADDRESS 1404 1b393db5STom Wai-Hong Tam Define the TPM's address on the i2c bus 1405 1b393db5STom Wai-Hong Tam 1406 1b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_BURST_LIMITATION 1407 1b393db5STom Wai-Hong Tam Define the burst count bytes upper limit 1408 1b393db5STom Wai-Hong Tam 1409 c01939c7SDirk Eibach CONFIG_TPM_ATMEL_TWI 1410 c01939c7SDirk Eibach Support for Atmel TWI TPM device. Requires I2C support. 1411 c01939c7SDirk Eibach 1412 90899cc0SChe-liang Chiou CONFIG_TPM_TIS_LPC 1413 5e124724SVadim Bendebury Support for generic parallel port TPM devices. Only one device 1414 5e124724SVadim Bendebury per system is supported at this time. 1415 5e124724SVadim Bendebury 1416 5e124724SVadim Bendebury CONFIG_TPM_TIS_BASE_ADDRESS 1417 5e124724SVadim Bendebury Base address where the generic TPM device is mapped 1418 5e124724SVadim Bendebury to. Contemporary x86 systems usually map it at 1419 5e124724SVadim Bendebury 0xfed40000. 1420 5e124724SVadim Bendebury 1421 be6c1529SReinhard Pfau CONFIG_CMD_TPM 1422 be6c1529SReinhard Pfau Add tpm monitor functions. 1423 be6c1529SReinhard Pfau Requires CONFIG_TPM. If CONFIG_TPM_AUTH_SESSIONS is set, also 1424 be6c1529SReinhard Pfau provides monitor access to authorized functions. 1425 be6c1529SReinhard Pfau 1426 be6c1529SReinhard Pfau CONFIG_TPM 1427 be6c1529SReinhard Pfau Define this to enable the TPM support library which provides 1428 be6c1529SReinhard Pfau functional interfaces to some TPM commands. 1429 be6c1529SReinhard Pfau Requires support for a TPM device. 1430 be6c1529SReinhard Pfau 1431 be6c1529SReinhard Pfau CONFIG_TPM_AUTH_SESSIONS 1432 be6c1529SReinhard Pfau Define this to enable authorized functions in the TPM library. 1433 be6c1529SReinhard Pfau Requires CONFIG_TPM and CONFIG_SHA1. 1434 be6c1529SReinhard Pfau 1435 c609719bSwdenk- USB Support: 1436 c609719bSwdenk At the moment only the UHCI host controller is 1437 4d13cbadSwdenk supported (PIP405, MIP405, MPC5200); define 1438 c609719bSwdenk CONFIG_USB_UHCI to enable it. 1439 c609719bSwdenk define CONFIG_USB_KEYBOARD to enable the USB Keyboard 1440 30d56faeSwdenk and define CONFIG_USB_STORAGE to enable the USB 1441 c609719bSwdenk storage devices. 1442 c609719bSwdenk Note: 1443 c609719bSwdenk Supported are USB Keyboards and USB Floppy drives 1444 c609719bSwdenk (TEAC FD-05PUB). 1445 4d13cbadSwdenk MPC5200 USB requires additional defines: 1446 4d13cbadSwdenk CONFIG_USB_CLOCK 1447 4d13cbadSwdenk for 528 MHz Clock: 0x0001bbbb 1448 307ecb6dSEric Millbrandt CONFIG_PSC3_USB 1449 307ecb6dSEric Millbrandt for USB on PSC3 1450 4d13cbadSwdenk CONFIG_USB_CONFIG 1451 4d13cbadSwdenk for differential drivers: 0x00001000 1452 4d13cbadSwdenk for single ended drivers: 0x00005000 1453 307ecb6dSEric Millbrandt for differential drivers on PSC3: 0x00000100 1454 307ecb6dSEric Millbrandt for single ended drivers on PSC3: 0x00004100 1455 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_EVENT_POLL 1456 fdcfaa1bSZhang Wei May be defined to allow interrupt polling 1457 fdcfaa1bSZhang Wei instead of using asynchronous interrupts 1458 4d13cbadSwdenk 1459 9ab4ce22SSimon Glass CONFIG_USB_EHCI_TXFIFO_THRESH enables setting of the 1460 9ab4ce22SSimon Glass txfilltuning field in the EHCI controller on reset. 1461 9ab4ce22SSimon Glass 1462 16c8d5e7SWolfgang Denk- USB Device: 1463 16c8d5e7SWolfgang Denk Define the below if you wish to use the USB console. 1464 16c8d5e7SWolfgang Denk Once firmware is rebuilt from a serial console issue the 1465 16c8d5e7SWolfgang Denk command "setenv stdin usbtty; setenv stdout usbtty" and 1466 11ccc33fSMarcel Ziswiler attach your USB cable. The Unix command "dmesg" should print 1467 16c8d5e7SWolfgang Denk it has found a new device. The environment variable usbtty 1468 16c8d5e7SWolfgang Denk can be set to gserial or cdc_acm to enable your device to 1469 16c8d5e7SWolfgang Denk appear to a USB host as a Linux gserial device or a 1470 16c8d5e7SWolfgang Denk Common Device Class Abstract Control Model serial device. 1471 16c8d5e7SWolfgang Denk If you select usbtty = gserial you should be able to enumerate 1472 16c8d5e7SWolfgang Denk a Linux host by 1473 16c8d5e7SWolfgang Denk # modprobe usbserial vendor=0xVendorID product=0xProductID 1474 16c8d5e7SWolfgang Denk else if using cdc_acm, simply setting the environment 1475 16c8d5e7SWolfgang Denk variable usbtty to be cdc_acm should suffice. The following 1476 16c8d5e7SWolfgang Denk might be defined in YourBoardName.h 1477 16c8d5e7SWolfgang Denk 1478 16c8d5e7SWolfgang Denk CONFIG_USB_DEVICE 1479 16c8d5e7SWolfgang Denk Define this to build a UDC device 1480 16c8d5e7SWolfgang Denk 1481 16c8d5e7SWolfgang Denk CONFIG_USB_TTY 1482 16c8d5e7SWolfgang Denk Define this to have a tty type of device available to 1483 16c8d5e7SWolfgang Denk talk to the UDC device 1484 16c8d5e7SWolfgang Denk 1485 f9da0f89SVipin KUMAR CONFIG_USBD_HS 1486 f9da0f89SVipin KUMAR Define this to enable the high speed support for usb 1487 f9da0f89SVipin KUMAR device and usbtty. If this feature is enabled, a routine 1488 f9da0f89SVipin KUMAR int is_usbd_high_speed(void) 1489 f9da0f89SVipin KUMAR also needs to be defined by the driver to dynamically poll 1490 f9da0f89SVipin KUMAR whether the enumeration has succeded at high speed or full 1491 f9da0f89SVipin KUMAR speed. 1492 f9da0f89SVipin KUMAR 1493 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CONSOLE_IS_IN_ENV 1494 16c8d5e7SWolfgang Denk Define this if you want stdin, stdout &/or stderr to 1495 16c8d5e7SWolfgang Denk be set to usbtty. 1496 16c8d5e7SWolfgang Denk 1497 16c8d5e7SWolfgang Denk mpc8xx: 1498 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_EXTC_CLK 0xBLAH 1499 16c8d5e7SWolfgang Denk Derive USB clock from external clock "blah" 1500 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_USB_EXTC_CLK 0x02 1501 16c8d5e7SWolfgang Denk 1502 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_BRG_CLK 0xBLAH 1503 16c8d5e7SWolfgang Denk Derive USB clock from brgclk 1504 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_USB_BRG_CLK 0x04 1505 16c8d5e7SWolfgang Denk 1506 16c8d5e7SWolfgang Denk If you have a USB-IF assigned VendorID then you may wish to 1507 16c8d5e7SWolfgang Denk define your own vendor specific values either in BoardName.h 1508 16c8d5e7SWolfgang Denk or directly in usbd_vendor_info.h. If you don't define 1509 16c8d5e7SWolfgang Denk CONFIG_USBD_MANUFACTURER, CONFIG_USBD_PRODUCT_NAME, 1510 16c8d5e7SWolfgang Denk CONFIG_USBD_VENDORID and CONFIG_USBD_PRODUCTID, then U-Boot 1511 16c8d5e7SWolfgang Denk should pretend to be a Linux device to it's target host. 1512 16c8d5e7SWolfgang Denk 1513 16c8d5e7SWolfgang Denk CONFIG_USBD_MANUFACTURER 1514 16c8d5e7SWolfgang Denk Define this string as the name of your company for 1515 16c8d5e7SWolfgang Denk - CONFIG_USBD_MANUFACTURER "my company" 1516 16c8d5e7SWolfgang Denk 1517 16c8d5e7SWolfgang Denk CONFIG_USBD_PRODUCT_NAME 1518 16c8d5e7SWolfgang Denk Define this string as the name of your product 1519 16c8d5e7SWolfgang Denk - CONFIG_USBD_PRODUCT_NAME "acme usb device" 1520 16c8d5e7SWolfgang Denk 1521 16c8d5e7SWolfgang Denk CONFIG_USBD_VENDORID 1522 16c8d5e7SWolfgang Denk Define this as your assigned Vendor ID from the USB 1523 16c8d5e7SWolfgang Denk Implementors Forum. This *must* be a genuine Vendor ID 1524 16c8d5e7SWolfgang Denk to avoid polluting the USB namespace. 1525 16c8d5e7SWolfgang Denk - CONFIG_USBD_VENDORID 0xFFFF 1526 16c8d5e7SWolfgang Denk 1527 16c8d5e7SWolfgang Denk CONFIG_USBD_PRODUCTID 1528 16c8d5e7SWolfgang Denk Define this as the unique Product ID 1529 16c8d5e7SWolfgang Denk for your device 1530 16c8d5e7SWolfgang Denk - CONFIG_USBD_PRODUCTID 0xFFFF 1531 c609719bSwdenk 1532 d70a560fSIgor Grinberg- ULPI Layer Support: 1533 d70a560fSIgor Grinberg The ULPI (UTMI Low Pin (count) Interface) PHYs are supported via 1534 d70a560fSIgor Grinberg the generic ULPI layer. The generic layer accesses the ULPI PHY 1535 d70a560fSIgor Grinberg via the platform viewport, so you need both the genric layer and 1536 d70a560fSIgor Grinberg the viewport enabled. Currently only Chipidea/ARC based 1537 d70a560fSIgor Grinberg viewport is supported. 1538 d70a560fSIgor Grinberg To enable the ULPI layer support, define CONFIG_USB_ULPI and 1539 d70a560fSIgor Grinberg CONFIG_USB_ULPI_VIEWPORT in your board configuration file. 1540 6d365ea0SLucas Stach If your ULPI phy needs a different reference clock than the 1541 6d365ea0SLucas Stach standard 24 MHz then you have to define CONFIG_ULPI_REF_CLK to 1542 6d365ea0SLucas Stach the appropriate value in Hz. 1543 c609719bSwdenk 1544 c609719bSwdenk- MMC Support: 1545 c609719bSwdenk The MMC controller on the Intel PXA is supported. To 1546 c609719bSwdenk enable this define CONFIG_MMC. The MMC can be 1547 c609719bSwdenk accessed from the boot prompt by mapping the device 1548 c609719bSwdenk to physical memory similar to flash. Command line is 1549 602ad3b3SJon Loeliger enabled with CONFIG_CMD_MMC. The MMC driver also works with 1550 602ad3b3SJon Loeliger the FAT fs. This is enabled with CONFIG_CMD_FAT. 1551 c609719bSwdenk 1552 afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF 1553 afb35666SYoshihiro Shimoda Support for Renesas on-chip MMCIF controller 1554 afb35666SYoshihiro Shimoda 1555 afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF_ADDR 1556 afb35666SYoshihiro Shimoda Define the base address of MMCIF registers 1557 afb35666SYoshihiro Shimoda 1558 afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF_CLK 1559 afb35666SYoshihiro Shimoda Define the clock frequency for MMCIF 1560 afb35666SYoshihiro Shimoda 1561 1fd93c6eSPierre Aubert CONFIG_GENERIC_MMC 1562 1fd93c6eSPierre Aubert Enable the generic MMC driver 1563 1fd93c6eSPierre Aubert 1564 1fd93c6eSPierre Aubert CONFIG_SUPPORT_EMMC_BOOT 1565 1fd93c6eSPierre Aubert Enable some additional features of the eMMC boot partitions. 1566 1fd93c6eSPierre Aubert 1567 1fd93c6eSPierre Aubert CONFIG_SUPPORT_EMMC_RPMB 1568 1fd93c6eSPierre Aubert Enable the commands for reading, writing and programming the 1569 1fd93c6eSPierre Aubert key for the Replay Protection Memory Block partition in eMMC. 1570 1fd93c6eSPierre Aubert 1571 b3ba6e94STom Rini- USB Device Firmware Update (DFU) class support: 1572 b3ba6e94STom Rini CONFIG_DFU_FUNCTION 1573 b3ba6e94STom Rini This enables the USB portion of the DFU USB class 1574 b3ba6e94STom Rini 1575 b3ba6e94STom Rini CONFIG_CMD_DFU 1576 b3ba6e94STom Rini This enables the command "dfu" which is used to have 1577 b3ba6e94STom Rini U-Boot create a DFU class device via USB. This command 1578 b3ba6e94STom Rini requires that the "dfu_alt_info" environment variable be 1579 b3ba6e94STom Rini set and define the alt settings to expose to the host. 1580 b3ba6e94STom Rini 1581 b3ba6e94STom Rini CONFIG_DFU_MMC 1582 b3ba6e94STom Rini This enables support for exposing (e)MMC devices via DFU. 1583 b3ba6e94STom Rini 1584 c6631764SPantelis Antoniou CONFIG_DFU_NAND 1585 c6631764SPantelis Antoniou This enables support for exposing NAND devices via DFU. 1586 c6631764SPantelis Antoniou 1587 a9479f04SAfzal Mohammed CONFIG_DFU_RAM 1588 a9479f04SAfzal Mohammed This enables support for exposing RAM via DFU. 1589 a9479f04SAfzal Mohammed Note: DFU spec refer to non-volatile memory usage, but 1590 a9479f04SAfzal Mohammed allow usages beyond the scope of spec - here RAM usage, 1591 a9479f04SAfzal Mohammed one that would help mostly the developer. 1592 a9479f04SAfzal Mohammed 1593 e7e75c70SHeiko Schocher CONFIG_SYS_DFU_DATA_BUF_SIZE 1594 e7e75c70SHeiko Schocher Dfu transfer uses a buffer before writing data to the 1595 e7e75c70SHeiko Schocher raw storage device. Make the size (in bytes) of this buffer 1596 e7e75c70SHeiko Schocher configurable. The size of this buffer is also configurable 1597 e7e75c70SHeiko Schocher through the "dfu_bufsiz" environment variable. 1598 e7e75c70SHeiko Schocher 1599 ea2453d5SPantelis Antoniou CONFIG_SYS_DFU_MAX_FILE_SIZE 1600 ea2453d5SPantelis Antoniou When updating files rather than the raw storage device, 1601 ea2453d5SPantelis Antoniou we use a static buffer to copy the file into and then write 1602 ea2453d5SPantelis Antoniou the buffer once we've been given the whole file. Define 1603 ea2453d5SPantelis Antoniou this to the maximum filesize (in bytes) for the buffer. 1604 ea2453d5SPantelis Antoniou Default is 4 MiB if undefined. 1605 ea2453d5SPantelis Antoniou 1606 001a8319SHeiko Schocher DFU_DEFAULT_POLL_TIMEOUT 1607 001a8319SHeiko Schocher Poll timeout [ms], is the timeout a device can send to the 1608 001a8319SHeiko Schocher host. The host must wait for this timeout before sending 1609 001a8319SHeiko Schocher a subsequent DFU_GET_STATUS request to the device. 1610 001a8319SHeiko Schocher 1611 001a8319SHeiko Schocher DFU_MANIFEST_POLL_TIMEOUT 1612 001a8319SHeiko Schocher Poll timeout [ms], which the device sends to the host when 1613 001a8319SHeiko Schocher entering dfuMANIFEST state. Host waits this timeout, before 1614 001a8319SHeiko Schocher sending again an USB request to the device. 1615 001a8319SHeiko Schocher 1616 3aab70afSSebastian Siewior- USB Device Android Fastboot support: 1617 3aab70afSSebastian Siewior CONFIG_CMD_FASTBOOT 1618 3aab70afSSebastian Siewior This enables the command "fastboot" which enables the Android 1619 3aab70afSSebastian Siewior fastboot mode for the platform's USB device. Fastboot is a USB 1620 3aab70afSSebastian Siewior protocol for downloading images, flashing and device control 1621 3aab70afSSebastian Siewior used on Android devices. 1622 3aab70afSSebastian Siewior See doc/README.android-fastboot for more information. 1623 3aab70afSSebastian Siewior 1624 3aab70afSSebastian Siewior CONFIG_ANDROID_BOOT_IMAGE 1625 3aab70afSSebastian Siewior This enables support for booting images which use the Android 1626 3aab70afSSebastian Siewior image format header. 1627 3aab70afSSebastian Siewior 1628 3aab70afSSebastian Siewior CONFIG_USB_FASTBOOT_BUF_ADDR 1629 3aab70afSSebastian Siewior The fastboot protocol requires a large memory buffer for 1630 3aab70afSSebastian Siewior downloads. Define this to the starting RAM address to use for 1631 3aab70afSSebastian Siewior downloaded images. 1632 3aab70afSSebastian Siewior 1633 3aab70afSSebastian Siewior CONFIG_USB_FASTBOOT_BUF_SIZE 1634 3aab70afSSebastian Siewior The fastboot protocol requires a large memory buffer for 1635 3aab70afSSebastian Siewior downloads. This buffer should be as large as possible for a 1636 3aab70afSSebastian Siewior platform. Define this to the size available RAM for fastboot. 1637 3aab70afSSebastian Siewior 1638 6705d81eSwdenk- Journaling Flash filesystem support: 1639 6705d81eSwdenk CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE, 1640 6705d81eSwdenk CONFIG_JFFS2_NAND_DEV 1641 6705d81eSwdenk Define these for a default partition on a NAND device 1642 6705d81eSwdenk 1643 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS2_FIRST_SECTOR, 1644 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS2_FIRST_BANK, CONFIG_SYS_JFFS2_NUM_BANKS 1645 6705d81eSwdenk Define these for a default partition on a NOR device 1646 6705d81eSwdenk 1647 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS_CUSTOM_PART 1648 6705d81eSwdenk Define this to create an own partition. You have to provide a 1649 6705d81eSwdenk function struct part_info* jffs2_part_info(int part_num) 1650 6705d81eSwdenk 1651 6705d81eSwdenk If you define only one JFFS2 partition you may also want to 1652 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_JFFS_SINGLE_PART 1 1653 6705d81eSwdenk to disable the command chpart. This is the default when you 1654 6705d81eSwdenk have not defined a custom partition 1655 6705d81eSwdenk 1656 c30a15e5SDonggeun Kim- FAT(File Allocation Table) filesystem write function support: 1657 c30a15e5SDonggeun Kim CONFIG_FAT_WRITE 1658 656f4c65SDonggeun Kim 1659 656f4c65SDonggeun Kim Define this to enable support for saving memory data as a 1660 656f4c65SDonggeun Kim file in FAT formatted partition. 1661 656f4c65SDonggeun Kim 1662 656f4c65SDonggeun Kim This will also enable the command "fatwrite" enabling the 1663 656f4c65SDonggeun Kim user to write files to FAT. 1664 c30a15e5SDonggeun Kim 1665 84cd9327SGabe BlackCBFS (Coreboot Filesystem) support 1666 84cd9327SGabe Black CONFIG_CMD_CBFS 1667 84cd9327SGabe Black 1668 84cd9327SGabe Black Define this to enable support for reading from a Coreboot 1669 84cd9327SGabe Black filesystem. Available commands are cbfsinit, cbfsinfo, cbfsls 1670 84cd9327SGabe Black and cbfsload. 1671 84cd9327SGabe Black 1672 4f0d1a2aSSiva Durga Prasad Paladugu- FAT(File Allocation Table) filesystem cluster size: 1673 4f0d1a2aSSiva Durga Prasad Paladugu CONFIG_FS_FAT_MAX_CLUSTSIZE 1674 4f0d1a2aSSiva Durga Prasad Paladugu 1675 4f0d1a2aSSiva Durga Prasad Paladugu Define the max cluster size for fat operations else 1676 4f0d1a2aSSiva Durga Prasad Paladugu a default value of 65536 will be defined. 1677 4f0d1a2aSSiva Durga Prasad Paladugu 1678 c609719bSwdenk- Keyboard Support: 1679 c609719bSwdenk CONFIG_ISA_KEYBOARD 1680 c609719bSwdenk 1681 c609719bSwdenk Define this to enable standard (PC-Style) keyboard 1682 c609719bSwdenk support 1683 c609719bSwdenk 1684 c609719bSwdenk CONFIG_I8042_KBD 1685 c609719bSwdenk Standard PC keyboard driver with US (is default) and 1686 c609719bSwdenk GERMAN key layout (switch via environment 'keymap=de') support. 1687 c609719bSwdenk Export function i8042_kbd_init, i8042_tstc and i8042_getc 1688 c609719bSwdenk for cfb_console. Supports cursor blinking. 1689 c609719bSwdenk 1690 713cb680SHung-ying Tyan CONFIG_CROS_EC_KEYB 1691 713cb680SHung-ying Tyan Enables a Chrome OS keyboard using the CROS_EC interface. 1692 713cb680SHung-ying Tyan This uses CROS_EC to communicate with a second microcontroller 1693 713cb680SHung-ying Tyan which provides key scans on request. 1694 713cb680SHung-ying Tyan 1695 c609719bSwdenk- Video support: 1696 c609719bSwdenk CONFIG_VIDEO 1697 c609719bSwdenk 1698 c609719bSwdenk Define this to enable video support (for output to 1699 c609719bSwdenk video). 1700 c609719bSwdenk 1701 c609719bSwdenk CONFIG_VIDEO_CT69000 1702 c609719bSwdenk 1703 c609719bSwdenk Enable Chips & Technologies 69000 Video chip 1704 c609719bSwdenk 1705 c609719bSwdenk CONFIG_VIDEO_SMI_LYNXEM 1706 eeb1b77bSwdenk Enable Silicon Motion SMI 712/710/810 Video chip. The 1707 eeb1b77bSwdenk video output is selected via environment 'videoout' 1708 eeb1b77bSwdenk (1 = LCD and 2 = CRT). If videoout is undefined, CRT is 1709 eeb1b77bSwdenk assumed. 1710 c609719bSwdenk 1711 eeb1b77bSwdenk For the CT69000 and SMI_LYNXEM drivers, videomode is 1712 11ccc33fSMarcel Ziswiler selected via environment 'videomode'. Two different ways 1713 eeb1b77bSwdenk are possible: 1714 eeb1b77bSwdenk - "videomode=num" 'num' is a standard LiLo mode numbers. 1715 eeb1b77bSwdenk Following standard modes are supported (* is default): 1716 eeb1b77bSwdenk 1717 eeb1b77bSwdenk Colors 640x480 800x600 1024x768 1152x864 1280x1024 1718 eeb1b77bSwdenk -------------+--------------------------------------------- 1719 eeb1b77bSwdenk 8 bits | 0x301* 0x303 0x305 0x161 0x307 1720 eeb1b77bSwdenk 15 bits | 0x310 0x313 0x316 0x162 0x319 1721 eeb1b77bSwdenk 16 bits | 0x311 0x314 0x317 0x163 0x31A 1722 eeb1b77bSwdenk 24 bits | 0x312 0x315 0x318 ? 0x31B 1723 eeb1b77bSwdenk -------------+--------------------------------------------- 1724 c609719bSwdenk (i.e. setenv videomode 317; saveenv; reset;) 1725 c609719bSwdenk 1726 eeb1b77bSwdenk - "videomode=bootargs" all the video parameters are parsed 1727 7817cb20SMarcel Ziswiler from the bootargs. (See drivers/video/videomodes.c) 1728 eeb1b77bSwdenk 1729 eeb1b77bSwdenk 1730 a6c7ad2fSwdenk CONFIG_VIDEO_SED13806 1731 a6c7ad2fSwdenk Enable Epson SED13806 driver. This driver supports 8bpp 1732 a6c7ad2fSwdenk and 16bpp modes defined by CONFIG_VIDEO_SED13806_8BPP 1733 a6c7ad2fSwdenk or CONFIG_VIDEO_SED13806_16BPP 1734 a6c7ad2fSwdenk 1735 7d3053fbSTimur Tabi CONFIG_FSL_DIU_FB 1736 7d3053fbSTimur Tabi Enable the Freescale DIU video driver. Reference boards for 1737 7d3053fbSTimur Tabi SOCs that have a DIU should define this macro to enable DIU 1738 7d3053fbSTimur Tabi support, and should also define these other macros: 1739 7d3053fbSTimur Tabi 1740 7d3053fbSTimur Tabi CONFIG_SYS_DIU_ADDR 1741 7d3053fbSTimur Tabi CONFIG_VIDEO 1742 7d3053fbSTimur Tabi CONFIG_CMD_BMP 1743 7d3053fbSTimur Tabi CONFIG_CFB_CONSOLE 1744 7d3053fbSTimur Tabi CONFIG_VIDEO_SW_CURSOR 1745 7d3053fbSTimur Tabi CONFIG_VGA_AS_SINGLE_DEVICE 1746 7d3053fbSTimur Tabi CONFIG_VIDEO_LOGO 1747 7d3053fbSTimur Tabi CONFIG_VIDEO_BMP_LOGO 1748 7d3053fbSTimur Tabi 1749 ba8e76bdSTimur Tabi The DIU driver will look for the 'video-mode' environment 1750 ba8e76bdSTimur Tabi variable, and if defined, enable the DIU as a console during 1751 ba8e76bdSTimur Tabi boot. See the documentation file README.video for a 1752 ba8e76bdSTimur Tabi description of this variable. 1753 7d3053fbSTimur Tabi 1754 058d59b0SSimon Glass CONFIG_VIDEO_VGA 1755 058d59b0SSimon Glass 1756 058d59b0SSimon Glass Enable the VGA video / BIOS for x86. The alternative if you 1757 058d59b0SSimon Glass are using coreboot is to use the coreboot frame buffer 1758 058d59b0SSimon Glass driver. 1759 058d59b0SSimon Glass 1760 058d59b0SSimon Glass 1761 682011ffSwdenk- Keyboard Support: 1762 682011ffSwdenk CONFIG_KEYBOARD 1763 682011ffSwdenk 1764 682011ffSwdenk Define this to enable a custom keyboard support. 1765 682011ffSwdenk This simply calls drv_keyboard_init() which must be 1766 682011ffSwdenk defined in your board-specific files. 1767 682011ffSwdenk The only board using this so far is RBC823. 1768 a6c7ad2fSwdenk 1769 c609719bSwdenk- LCD Support: CONFIG_LCD 1770 c609719bSwdenk 1771 c609719bSwdenk Define this to enable LCD support (for output to LCD 1772 c609719bSwdenk display); also select one of the supported displays 1773 c609719bSwdenk by defining one of these: 1774 c609719bSwdenk 1775 39cf4804SStelian Pop CONFIG_ATMEL_LCD: 1776 39cf4804SStelian Pop 1777 39cf4804SStelian Pop HITACHI TX09D70VM1CCA, 3.5", 240x320. 1778 39cf4804SStelian Pop 1779 fd3103bbSwdenk CONFIG_NEC_NL6448AC33: 1780 c609719bSwdenk 1781 fd3103bbSwdenk NEC NL6448AC33-18. Active, color, single scan. 1782 c609719bSwdenk 1783 fd3103bbSwdenk CONFIG_NEC_NL6448BC20 1784 c609719bSwdenk 1785 fd3103bbSwdenk NEC NL6448BC20-08. 6.5", 640x480. 1786 fd3103bbSwdenk Active, color, single scan. 1787 fd3103bbSwdenk 1788 fd3103bbSwdenk CONFIG_NEC_NL6448BC33_54 1789 fd3103bbSwdenk 1790 fd3103bbSwdenk NEC NL6448BC33-54. 10.4", 640x480. 1791 c609719bSwdenk Active, color, single scan. 1792 c609719bSwdenk 1793 c609719bSwdenk CONFIG_SHARP_16x9 1794 c609719bSwdenk 1795 c609719bSwdenk Sharp 320x240. Active, color, single scan. 1796 c609719bSwdenk It isn't 16x9, and I am not sure what it is. 1797 c609719bSwdenk 1798 c609719bSwdenk CONFIG_SHARP_LQ64D341 1799 c609719bSwdenk 1800 c609719bSwdenk Sharp LQ64D341 display, 640x480. 1801 c609719bSwdenk Active, color, single scan. 1802 c609719bSwdenk 1803 c609719bSwdenk CONFIG_HLD1045 1804 c609719bSwdenk 1805 c609719bSwdenk HLD1045 display, 640x480. 1806 c609719bSwdenk Active, color, single scan. 1807 c609719bSwdenk 1808 c609719bSwdenk CONFIG_OPTREX_BW 1809 c609719bSwdenk 1810 c609719bSwdenk Optrex CBL50840-2 NF-FW 99 22 M5 1811 c609719bSwdenk or 1812 c609719bSwdenk Hitachi LMG6912RPFC-00T 1813 c609719bSwdenk or 1814 c609719bSwdenk Hitachi SP14Q002 1815 c609719bSwdenk 1816 c609719bSwdenk 320x240. Black & white. 1817 c609719bSwdenk 1818 c609719bSwdenk Normally display is black on white background; define 1819 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_WHITE_ON_BLACK to get it inverted. 1820 c609719bSwdenk 1821 676d319eSSimon Glass CONFIG_LCD_ALIGNMENT 1822 676d319eSSimon Glass 1823 676d319eSSimon Glass Normally the LCD is page-aligned (tyically 4KB). If this is 1824 676d319eSSimon Glass defined then the LCD will be aligned to this value instead. 1825 676d319eSSimon Glass For ARM it is sometimes useful to use MMU_SECTION_SIZE 1826 676d319eSSimon Glass here, since it is cheaper to change data cache settings on 1827 676d319eSSimon Glass a per-section basis. 1828 676d319eSSimon Glass 1829 0d89efefSSimon Glass CONFIG_CONSOLE_SCROLL_LINES 1830 0d89efefSSimon Glass 1831 0d89efefSSimon Glass When the console need to be scrolled, this is the number of 1832 0d89efefSSimon Glass lines to scroll by. It defaults to 1. Increasing this makes 1833 0d89efefSSimon Glass the console jump but can help speed up operation when scrolling 1834 0d89efefSSimon Glass is slow. 1835 676d319eSSimon Glass 1836 45d7f525STom Wai-Hong Tam CONFIG_LCD_BMP_RLE8 1837 45d7f525STom Wai-Hong Tam 1838 45d7f525STom Wai-Hong Tam Support drawing of RLE8-compressed bitmaps on the LCD. 1839 45d7f525STom Wai-Hong Tam 1840 735987c5STom Wai-Hong Tam CONFIG_I2C_EDID 1841 735987c5STom Wai-Hong Tam 1842 735987c5STom Wai-Hong Tam Enables an 'i2c edid' command which can read EDID 1843 735987c5STom Wai-Hong Tam information over I2C from an attached LCD display. 1844 735987c5STom Wai-Hong Tam 1845 7152b1d0Swdenk- Splash Screen Support: CONFIG_SPLASH_SCREEN 1846 d791b1dcSwdenk 1847 d791b1dcSwdenk If this option is set, the environment is checked for 1848 d791b1dcSwdenk a variable "splashimage". If found, the usual display 1849 d791b1dcSwdenk of logo, copyright and system information on the LCD 1850 e94d2cd9Swdenk is suppressed and the BMP image at the address 1851 d791b1dcSwdenk specified in "splashimage" is loaded instead. The 1852 d791b1dcSwdenk console is redirected to the "nulldev", too. This 1853 d791b1dcSwdenk allows for a "silent" boot where a splash screen is 1854 d791b1dcSwdenk loaded very quickly after power-on. 1855 d791b1dcSwdenk 1856 c0880485SNikita Kiryanov CONFIG_SPLASHIMAGE_GUARD 1857 c0880485SNikita Kiryanov 1858 c0880485SNikita Kiryanov If this option is set, then U-Boot will prevent the environment 1859 c0880485SNikita Kiryanov variable "splashimage" from being set to a problematic address 1860 1551df35STom Rini (see README.displaying-bmps). 1861 c0880485SNikita Kiryanov This option is useful for targets where, due to alignment 1862 c0880485SNikita Kiryanov restrictions, an improperly aligned BMP image will cause a data 1863 c0880485SNikita Kiryanov abort. If you think you will not have problems with unaligned 1864 c0880485SNikita Kiryanov accesses (for example because your toolchain prevents them) 1865 c0880485SNikita Kiryanov there is no need to set this option. 1866 c0880485SNikita Kiryanov 1867 1ca298ceSMatthias Weisser CONFIG_SPLASH_SCREEN_ALIGN 1868 1ca298ceSMatthias Weisser 1869 1ca298ceSMatthias Weisser If this option is set the splash image can be freely positioned 1870 1ca298ceSMatthias Weisser on the screen. Environment variable "splashpos" specifies the 1871 1ca298ceSMatthias Weisser position as "x,y". If a positive number is given it is used as 1872 1ca298ceSMatthias Weisser number of pixel from left/top. If a negative number is given it 1873 1ca298ceSMatthias Weisser is used as number of pixel from right/bottom. You can also 1874 1ca298ceSMatthias Weisser specify 'm' for centering the image. 1875 1ca298ceSMatthias Weisser 1876 1ca298ceSMatthias Weisser Example: 1877 1ca298ceSMatthias Weisser setenv splashpos m,m 1878 1ca298ceSMatthias Weisser => image at center of screen 1879 1ca298ceSMatthias Weisser 1880 1ca298ceSMatthias Weisser setenv splashpos 30,20 1881 1ca298ceSMatthias Weisser => image at x = 30 and y = 20 1882 1ca298ceSMatthias Weisser 1883 1ca298ceSMatthias Weisser setenv splashpos -10,m 1884 1ca298ceSMatthias Weisser => vertically centered image 1885 1ca298ceSMatthias Weisser at x = dspWidth - bmpWidth - 9 1886 1ca298ceSMatthias Weisser 1887 98f4a3dfSStefan Roese- Gzip compressed BMP image support: CONFIG_VIDEO_BMP_GZIP 1888 98f4a3dfSStefan Roese 1889 98f4a3dfSStefan Roese If this option is set, additionally to standard BMP 1890 98f4a3dfSStefan Roese images, gzipped BMP images can be displayed via the 1891 98f4a3dfSStefan Roese splashscreen support or the bmp command. 1892 98f4a3dfSStefan Roese 1893 d5011762SAnatolij Gustschin- Run length encoded BMP image (RLE8) support: CONFIG_VIDEO_BMP_RLE8 1894 d5011762SAnatolij Gustschin 1895 d5011762SAnatolij Gustschin If this option is set, 8-bit RLE compressed BMP images 1896 d5011762SAnatolij Gustschin can be displayed via the splashscreen support or the 1897 d5011762SAnatolij Gustschin bmp command. 1898 d5011762SAnatolij Gustschin 1899 f2b96dfbSLei Wen- Do compresssing for memory range: 1900 f2b96dfbSLei Wen CONFIG_CMD_ZIP 1901 f2b96dfbSLei Wen 1902 f2b96dfbSLei Wen If this option is set, it would use zlib deflate method 1903 f2b96dfbSLei Wen to compress the specified memory at its best effort. 1904 f2b96dfbSLei Wen 1905 c29fdfc1Swdenk- Compression support: 1906 8ef70478SKees Cook CONFIG_GZIP 1907 8ef70478SKees Cook 1908 8ef70478SKees Cook Enabled by default to support gzip compressed images. 1909 8ef70478SKees Cook 1910 c29fdfc1Swdenk CONFIG_BZIP2 1911 c29fdfc1Swdenk 1912 c29fdfc1Swdenk If this option is set, support for bzip2 compressed 1913 c29fdfc1Swdenk images is included. If not, only uncompressed and gzip 1914 c29fdfc1Swdenk compressed images are supported. 1915 c29fdfc1Swdenk 1916 c29fdfc1Swdenk NOTE: the bzip2 algorithm requires a lot of RAM, so 1917 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD the malloc area (as defined by CONFIG_SYS_MALLOC_LEN) should 1918 c29fdfc1Swdenk be at least 4MB. 1919 d791b1dcSwdenk 1920 fc9c1727SLuigi 'Comio' Mantellini CONFIG_LZMA 1921 fc9c1727SLuigi 'Comio' Mantellini 1922 fc9c1727SLuigi 'Comio' Mantellini If this option is set, support for lzma compressed 1923 fc9c1727SLuigi 'Comio' Mantellini images is included. 1924 fc9c1727SLuigi 'Comio' Mantellini 1925 fc9c1727SLuigi 'Comio' Mantellini Note: The LZMA algorithm adds between 2 and 4KB of code and it 1926 fc9c1727SLuigi 'Comio' Mantellini requires an amount of dynamic memory that is given by the 1927 fc9c1727SLuigi 'Comio' Mantellini formula: 1928 fc9c1727SLuigi 'Comio' Mantellini 1929 fc9c1727SLuigi 'Comio' Mantellini (1846 + 768 << (lc + lp)) * sizeof(uint16) 1930 fc9c1727SLuigi 'Comio' Mantellini 1931 fc9c1727SLuigi 'Comio' Mantellini Where lc and lp stand for, respectively, Literal context bits 1932 fc9c1727SLuigi 'Comio' Mantellini and Literal pos bits. 1933 fc9c1727SLuigi 'Comio' Mantellini 1934 fc9c1727SLuigi 'Comio' Mantellini This value is upper-bounded by 14MB in the worst case. Anyway, 1935 fc9c1727SLuigi 'Comio' Mantellini for a ~4MB large kernel image, we have lc=3 and lp=0 for a 1936 fc9c1727SLuigi 'Comio' Mantellini total amount of (1846 + 768 << (3 + 0)) * 2 = ~41KB... that is 1937 fc9c1727SLuigi 'Comio' Mantellini a very small buffer. 1938 fc9c1727SLuigi 'Comio' Mantellini 1939 fc9c1727SLuigi 'Comio' Mantellini Use the lzmainfo tool to determinate the lc and lp values and 1940 fc9c1727SLuigi 'Comio' Mantellini then calculate the amount of needed dynamic memory (ensuring 1941 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD the appropriate CONFIG_SYS_MALLOC_LEN value). 1942 fc9c1727SLuigi 'Comio' Mantellini 1943 8ef70478SKees Cook CONFIG_LZO 1944 8ef70478SKees Cook 1945 8ef70478SKees Cook If this option is set, support for LZO compressed images 1946 8ef70478SKees Cook is included. 1947 8ef70478SKees Cook 1948 17ea1177Swdenk- MII/PHY support: 1949 17ea1177Swdenk CONFIG_PHY_ADDR 1950 17ea1177Swdenk 1951 17ea1177Swdenk The address of PHY on MII bus. 1952 17ea1177Swdenk 1953 17ea1177Swdenk CONFIG_PHY_CLOCK_FREQ (ppc4xx) 1954 17ea1177Swdenk 1955 17ea1177Swdenk The clock frequency of the MII bus 1956 17ea1177Swdenk 1957 17ea1177Swdenk CONFIG_PHY_GIGE 1958 17ea1177Swdenk 1959 17ea1177Swdenk If this option is set, support for speed/duplex 1960 11ccc33fSMarcel Ziswiler detection of gigabit PHY is included. 1961 17ea1177Swdenk 1962 17ea1177Swdenk CONFIG_PHY_RESET_DELAY 1963 17ea1177Swdenk 1964 17ea1177Swdenk Some PHY like Intel LXT971A need extra delay after 1965 17ea1177Swdenk reset before any MII register access is possible. 1966 17ea1177Swdenk For such PHY, set this option to the usec delay 1967 17ea1177Swdenk required. (minimum 300usec for LXT971A) 1968 17ea1177Swdenk 1969 17ea1177Swdenk CONFIG_PHY_CMD_DELAY (ppc4xx) 1970 17ea1177Swdenk 1971 17ea1177Swdenk Some PHY like Intel LXT971A need extra delay after 1972 17ea1177Swdenk command issued before MII status register can be read 1973 17ea1177Swdenk 1974 c609719bSwdenk- Ethernet address: 1975 c609719bSwdenk CONFIG_ETHADDR 1976 c68a05feSrichardretanubun CONFIG_ETH1ADDR 1977 c609719bSwdenk CONFIG_ETH2ADDR 1978 c609719bSwdenk CONFIG_ETH3ADDR 1979 c68a05feSrichardretanubun CONFIG_ETH4ADDR 1980 c68a05feSrichardretanubun CONFIG_ETH5ADDR 1981 c609719bSwdenk 1982 11ccc33fSMarcel Ziswiler Define a default value for Ethernet address to use 1983 11ccc33fSMarcel Ziswiler for the respective Ethernet interface, in case this 1984 c609719bSwdenk is not determined automatically. 1985 c609719bSwdenk 1986 c609719bSwdenk- IP address: 1987 c609719bSwdenk CONFIG_IPADDR 1988 c609719bSwdenk 1989 c609719bSwdenk Define a default value for the IP address to use for 1990 11ccc33fSMarcel Ziswiler the default Ethernet interface, in case this is not 1991 c609719bSwdenk determined through e.g. bootp. 1992 1ebcd654SWolfgang Denk (Environment variable "ipaddr") 1993 c609719bSwdenk 1994 c609719bSwdenk- Server IP address: 1995 c609719bSwdenk CONFIG_SERVERIP 1996 c609719bSwdenk 1997 c609719bSwdenk Defines a default value for the IP address of a TFTP 1998 c609719bSwdenk server to contact when using the "tftboot" command. 1999 1ebcd654SWolfgang Denk (Environment variable "serverip") 2000 c609719bSwdenk 2001 97cfe861SRobin Getz CONFIG_KEEP_SERVERADDR 2002 97cfe861SRobin Getz 2003 97cfe861SRobin Getz Keeps the server's MAC address, in the env 'serveraddr' 2004 97cfe861SRobin Getz for passing to bootargs (like Linux's netconsole option) 2005 97cfe861SRobin Getz 2006 1ebcd654SWolfgang Denk- Gateway IP address: 2007 1ebcd654SWolfgang Denk CONFIG_GATEWAYIP 2008 1ebcd654SWolfgang Denk 2009 1ebcd654SWolfgang Denk Defines a default value for the IP address of the 2010 1ebcd654SWolfgang Denk default router where packets to other networks are 2011 1ebcd654SWolfgang Denk sent to. 2012 1ebcd654SWolfgang Denk (Environment variable "gatewayip") 2013 1ebcd654SWolfgang Denk 2014 1ebcd654SWolfgang Denk- Subnet mask: 2015 1ebcd654SWolfgang Denk CONFIG_NETMASK 2016 1ebcd654SWolfgang Denk 2017 1ebcd654SWolfgang Denk Defines a default value for the subnet mask (or 2018 1ebcd654SWolfgang Denk routing prefix) which is used to determine if an IP 2019 1ebcd654SWolfgang Denk address belongs to the local subnet or needs to be 2020 1ebcd654SWolfgang Denk forwarded through a router. 2021 1ebcd654SWolfgang Denk (Environment variable "netmask") 2022 1ebcd654SWolfgang Denk 2023 53a5c424SDavid Updegraff- Multicast TFTP Mode: 2024 53a5c424SDavid Updegraff CONFIG_MCAST_TFTP 2025 53a5c424SDavid Updegraff 2026 53a5c424SDavid Updegraff Defines whether you want to support multicast TFTP as per 2027 53a5c424SDavid Updegraff rfc-2090; for example to work with atftp. Lets lots of targets 2028 11ccc33fSMarcel Ziswiler tftp down the same boot image concurrently. Note: the Ethernet 2029 53a5c424SDavid Updegraff driver in use must provide a function: mcast() to join/leave a 2030 53a5c424SDavid Updegraff multicast group. 2031 53a5c424SDavid Updegraff 2032 c609719bSwdenk- BOOTP Recovery Mode: 2033 c609719bSwdenk CONFIG_BOOTP_RANDOM_DELAY 2034 c609719bSwdenk 2035 c609719bSwdenk If you have many targets in a network that try to 2036 c609719bSwdenk boot using BOOTP, you may want to avoid that all 2037 c609719bSwdenk systems send out BOOTP requests at precisely the same 2038 c609719bSwdenk moment (which would happen for instance at recovery 2039 c609719bSwdenk from a power failure, when all systems will try to 2040 c609719bSwdenk boot, thus flooding the BOOTP server. Defining 2041 c609719bSwdenk CONFIG_BOOTP_RANDOM_DELAY causes a random delay to be 2042 c609719bSwdenk inserted before sending out BOOTP requests. The 2043 6c33c785SWolfgang Denk following delays are inserted then: 2044 c609719bSwdenk 2045 c609719bSwdenk 1st BOOTP request: delay 0 ... 1 sec 2046 c609719bSwdenk 2nd BOOTP request: delay 0 ... 2 sec 2047 c609719bSwdenk 3rd BOOTP request: delay 0 ... 4 sec 2048 c609719bSwdenk 4th and following 2049 c609719bSwdenk BOOTP requests: delay 0 ... 8 sec 2050 c609719bSwdenk 2051 92ac8accSThierry Reding CONFIG_BOOTP_ID_CACHE_SIZE 2052 92ac8accSThierry Reding 2053 92ac8accSThierry Reding BOOTP packets are uniquely identified using a 32-bit ID. The 2054 92ac8accSThierry Reding server will copy the ID from client requests to responses and 2055 92ac8accSThierry Reding U-Boot will use this to determine if it is the destination of 2056 92ac8accSThierry Reding an incoming response. Some servers will check that addresses 2057 92ac8accSThierry Reding aren't in use before handing them out (usually using an ARP 2058 92ac8accSThierry Reding ping) and therefore take up to a few hundred milliseconds to 2059 92ac8accSThierry Reding respond. Network congestion may also influence the time it 2060 92ac8accSThierry Reding takes for a response to make it back to the client. If that 2061 92ac8accSThierry Reding time is too long, U-Boot will retransmit requests. In order 2062 92ac8accSThierry Reding to allow earlier responses to still be accepted after these 2063 92ac8accSThierry Reding retransmissions, U-Boot's BOOTP client keeps a small cache of 2064 92ac8accSThierry Reding IDs. The CONFIG_BOOTP_ID_CACHE_SIZE controls the size of this 2065 92ac8accSThierry Reding cache. The default is to keep IDs for up to four outstanding 2066 92ac8accSThierry Reding requests. Increasing this will allow U-Boot to accept offers 2067 92ac8accSThierry Reding from a BOOTP client in networks with unusually high latency. 2068 92ac8accSThierry Reding 2069 fe389a82Sstroese- DHCP Advanced Options: 2070 1fe80d79SJon Loeliger You can fine tune the DHCP functionality by defining 2071 1fe80d79SJon Loeliger CONFIG_BOOTP_* symbols: 2072 fe389a82Sstroese 2073 1fe80d79SJon Loeliger CONFIG_BOOTP_SUBNETMASK 2074 1fe80d79SJon Loeliger CONFIG_BOOTP_GATEWAY 2075 1fe80d79SJon Loeliger CONFIG_BOOTP_HOSTNAME 2076 1fe80d79SJon Loeliger CONFIG_BOOTP_NISDOMAIN 2077 1fe80d79SJon Loeliger CONFIG_BOOTP_BOOTPATH 2078 1fe80d79SJon Loeliger CONFIG_BOOTP_BOOTFILESIZE 2079 1fe80d79SJon Loeliger CONFIG_BOOTP_DNS 2080 1fe80d79SJon Loeliger CONFIG_BOOTP_DNS2 2081 1fe80d79SJon Loeliger CONFIG_BOOTP_SEND_HOSTNAME 2082 1fe80d79SJon Loeliger CONFIG_BOOTP_NTPSERVER 2083 1fe80d79SJon Loeliger CONFIG_BOOTP_TIMEOFFSET 2084 1fe80d79SJon Loeliger CONFIG_BOOTP_VENDOREX 2085 2c00e099SJoe Hershberger CONFIG_BOOTP_MAY_FAIL 2086 fe389a82Sstroese 2087 5d110f0aSWilson Callan CONFIG_BOOTP_SERVERIP - TFTP server will be the serverip 2088 5d110f0aSWilson Callan environment variable, not the BOOTP server. 2089 fe389a82Sstroese 2090 2c00e099SJoe Hershberger CONFIG_BOOTP_MAY_FAIL - If the DHCP server is not found 2091 2c00e099SJoe Hershberger after the configured retry count, the call will fail 2092 2c00e099SJoe Hershberger instead of starting over. This can be used to fail over 2093 2c00e099SJoe Hershberger to Link-local IP address configuration if the DHCP server 2094 2c00e099SJoe Hershberger is not available. 2095 2c00e099SJoe Hershberger 2096 fe389a82Sstroese CONFIG_BOOTP_DNS2 - If a DHCP client requests the DNS 2097 fe389a82Sstroese serverip from a DHCP server, it is possible that more 2098 fe389a82Sstroese than one DNS serverip is offered to the client. 2099 fe389a82Sstroese If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS 2100 fe389a82Sstroese serverip will be stored in the additional environment 2101 fe389a82Sstroese variable "dnsip2". The first DNS serverip is always 2102 fe389a82Sstroese stored in the variable "dnsip", when CONFIG_BOOTP_DNS 2103 1fe80d79SJon Loeliger is defined. 2104 fe389a82Sstroese 2105 fe389a82Sstroese CONFIG_BOOTP_SEND_HOSTNAME - Some DHCP servers are capable 2106 fe389a82Sstroese to do a dynamic update of a DNS server. To do this, they 2107 fe389a82Sstroese need the hostname of the DHCP requester. 2108 5d110f0aSWilson Callan If CONFIG_BOOTP_SEND_HOSTNAME is defined, the content 2109 1fe80d79SJon Loeliger of the "hostname" environment variable is passed as 2110 1fe80d79SJon Loeliger option 12 to the DHCP server. 2111 fe389a82Sstroese 2112 d9a2f416SAras Vaichas CONFIG_BOOTP_DHCP_REQUEST_DELAY 2113 d9a2f416SAras Vaichas 2114 d9a2f416SAras Vaichas A 32bit value in microseconds for a delay between 2115 d9a2f416SAras Vaichas receiving a "DHCP Offer" and sending the "DHCP Request". 2116 d9a2f416SAras Vaichas This fixes a problem with certain DHCP servers that don't 2117 d9a2f416SAras Vaichas respond 100% of the time to a "DHCP request". E.g. On an 2118 d9a2f416SAras Vaichas AT91RM9200 processor running at 180MHz, this delay needed 2119 d9a2f416SAras Vaichas to be *at least* 15,000 usec before a Windows Server 2003 2120 d9a2f416SAras Vaichas DHCP server would reply 100% of the time. I recommend at 2121 d9a2f416SAras Vaichas least 50,000 usec to be safe. The alternative is to hope 2122 d9a2f416SAras Vaichas that one of the retries will be successful but note that 2123 d9a2f416SAras Vaichas the DHCP timeout and retry process takes a longer than 2124 d9a2f416SAras Vaichas this delay. 2125 d9a2f416SAras Vaichas 2126 d22c338eSJoe Hershberger - Link-local IP address negotiation: 2127 d22c338eSJoe Hershberger Negotiate with other link-local clients on the local network 2128 d22c338eSJoe Hershberger for an address that doesn't require explicit configuration. 2129 d22c338eSJoe Hershberger This is especially useful if a DHCP server cannot be guaranteed 2130 d22c338eSJoe Hershberger to exist in all environments that the device must operate. 2131 d22c338eSJoe Hershberger 2132 d22c338eSJoe Hershberger See doc/README.link-local for more information. 2133 d22c338eSJoe Hershberger 2134 a3d991bdSwdenk - CDP Options: 2135 a3d991bdSwdenk CONFIG_CDP_DEVICE_ID 2136 a3d991bdSwdenk 2137 a3d991bdSwdenk The device id used in CDP trigger frames. 2138 a3d991bdSwdenk 2139 a3d991bdSwdenk CONFIG_CDP_DEVICE_ID_PREFIX 2140 a3d991bdSwdenk 2141 a3d991bdSwdenk A two character string which is prefixed to the MAC address 2142 a3d991bdSwdenk of the device. 2143 a3d991bdSwdenk 2144 a3d991bdSwdenk CONFIG_CDP_PORT_ID 2145 a3d991bdSwdenk 2146 a3d991bdSwdenk A printf format string which contains the ascii name of 2147 a3d991bdSwdenk the port. Normally is set to "eth%d" which sets 2148 11ccc33fSMarcel Ziswiler eth0 for the first Ethernet, eth1 for the second etc. 2149 a3d991bdSwdenk 2150 a3d991bdSwdenk CONFIG_CDP_CAPABILITIES 2151 a3d991bdSwdenk 2152 a3d991bdSwdenk A 32bit integer which indicates the device capabilities; 2153 a3d991bdSwdenk 0x00000010 for a normal host which does not forwards. 2154 a3d991bdSwdenk 2155 a3d991bdSwdenk CONFIG_CDP_VERSION 2156 a3d991bdSwdenk 2157 a3d991bdSwdenk An ascii string containing the version of the software. 2158 a3d991bdSwdenk 2159 a3d991bdSwdenk CONFIG_CDP_PLATFORM 2160 a3d991bdSwdenk 2161 a3d991bdSwdenk An ascii string containing the name of the platform. 2162 a3d991bdSwdenk 2163 a3d991bdSwdenk CONFIG_CDP_TRIGGER 2164 a3d991bdSwdenk 2165 a3d991bdSwdenk A 32bit integer sent on the trigger. 2166 a3d991bdSwdenk 2167 a3d991bdSwdenk CONFIG_CDP_POWER_CONSUMPTION 2168 a3d991bdSwdenk 2169 a3d991bdSwdenk A 16bit integer containing the power consumption of the 2170 a3d991bdSwdenk device in .1 of milliwatts. 2171 a3d991bdSwdenk 2172 a3d991bdSwdenk CONFIG_CDP_APPLIANCE_VLAN_TYPE 2173 a3d991bdSwdenk 2174 a3d991bdSwdenk A byte containing the id of the VLAN. 2175 a3d991bdSwdenk 2176 c609719bSwdenk- Status LED: CONFIG_STATUS_LED 2177 c609719bSwdenk 2178 c609719bSwdenk Several configurations allow to display the current 2179 c609719bSwdenk status using a LED. For instance, the LED will blink 2180 c609719bSwdenk fast while running U-Boot code, stop blinking as 2181 c609719bSwdenk soon as a reply to a BOOTP request was received, and 2182 c609719bSwdenk start blinking slow once the Linux kernel is running 2183 c609719bSwdenk (supported by a status LED driver in the Linux 2184 c609719bSwdenk kernel). Defining CONFIG_STATUS_LED enables this 2185 c609719bSwdenk feature in U-Boot. 2186 c609719bSwdenk 2187 1df7bbbaSIgor Grinberg Additional options: 2188 1df7bbbaSIgor Grinberg 2189 1df7bbbaSIgor Grinberg CONFIG_GPIO_LED 2190 1df7bbbaSIgor Grinberg The status LED can be connected to a GPIO pin. 2191 1df7bbbaSIgor Grinberg In such cases, the gpio_led driver can be used as a 2192 1df7bbbaSIgor Grinberg status LED backend implementation. Define CONFIG_GPIO_LED 2193 1df7bbbaSIgor Grinberg to include the gpio_led driver in the U-Boot binary. 2194 1df7bbbaSIgor Grinberg 2195 9dfdcdfeSIgor Grinberg CONFIG_GPIO_LED_INVERTED_TABLE 2196 9dfdcdfeSIgor Grinberg Some GPIO connected LEDs may have inverted polarity in which 2197 9dfdcdfeSIgor Grinberg case the GPIO high value corresponds to LED off state and 2198 9dfdcdfeSIgor Grinberg GPIO low value corresponds to LED on state. 2199 9dfdcdfeSIgor Grinberg In such cases CONFIG_GPIO_LED_INVERTED_TABLE may be defined 2200 9dfdcdfeSIgor Grinberg with a list of GPIO LEDs that have inverted polarity. 2201 9dfdcdfeSIgor Grinberg 2202 c609719bSwdenk- CAN Support: CONFIG_CAN_DRIVER 2203 c609719bSwdenk 2204 c609719bSwdenk Defining CONFIG_CAN_DRIVER enables CAN driver support 2205 c609719bSwdenk on those systems that support this (optional) 2206 c609719bSwdenk feature, like the TQM8xxL modules. 2207 c609719bSwdenk 2208 3f4978c7SHeiko Schocher- I2C Support: CONFIG_SYS_I2C 2209 c609719bSwdenk 2210 3f4978c7SHeiko Schocher This enable the NEW i2c subsystem, and will allow you to use 2211 3f4978c7SHeiko Schocher i2c commands at the u-boot command line (as long as you set 2212 3f4978c7SHeiko Schocher CONFIG_CMD_I2C in CONFIG_COMMANDS) and communicate with i2c 2213 3f4978c7SHeiko Schocher based realtime clock chips or other i2c devices. See 2214 3f4978c7SHeiko Schocher common/cmd_i2c.c for a description of the command line 2215 3f4978c7SHeiko Schocher interface. 2216 3f4978c7SHeiko Schocher 2217 3f4978c7SHeiko Schocher ported i2c driver to the new framework: 2218 ea818dbbSHeiko Schocher - drivers/i2c/soft_i2c.c: 2219 ea818dbbSHeiko Schocher - activate first bus with CONFIG_SYS_I2C_SOFT define 2220 ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED and CONFIG_SYS_I2C_SOFT_SLAVE 2221 ea818dbbSHeiko Schocher for defining speed and slave address 2222 ea818dbbSHeiko Schocher - activate second bus with I2C_SOFT_DECLARATIONS2 define 2223 ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_2 and CONFIG_SYS_I2C_SOFT_SLAVE_2 2224 ea818dbbSHeiko Schocher for defining speed and slave address 2225 ea818dbbSHeiko Schocher - activate third bus with I2C_SOFT_DECLARATIONS3 define 2226 ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_3 and CONFIG_SYS_I2C_SOFT_SLAVE_3 2227 ea818dbbSHeiko Schocher for defining speed and slave address 2228 ea818dbbSHeiko Schocher - activate fourth bus with I2C_SOFT_DECLARATIONS4 define 2229 ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_4 and CONFIG_SYS_I2C_SOFT_SLAVE_4 2230 ea818dbbSHeiko Schocher for defining speed and slave address 2231 3f4978c7SHeiko Schocher 2232 00f792e0SHeiko Schocher - drivers/i2c/fsl_i2c.c: 2233 00f792e0SHeiko Schocher - activate i2c driver with CONFIG_SYS_I2C_FSL 2234 00f792e0SHeiko Schocher define CONFIG_SYS_FSL_I2C_OFFSET for setting the register 2235 00f792e0SHeiko Schocher offset CONFIG_SYS_FSL_I2C_SPEED for the i2c speed and 2236 00f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C_SLAVE for the slave addr of the first 2237 00f792e0SHeiko Schocher bus. 2238 00f792e0SHeiko Schocher - If your board supports a second fsl i2c bus, define 2239 00f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_OFFSET for the register offset 2240 00f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_SPEED for the speed and 2241 00f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_SLAVE for the slave address of the 2242 00f792e0SHeiko Schocher second bus. 2243 00f792e0SHeiko Schocher 2244 1f2ba722SSimon Glass - drivers/i2c/tegra_i2c.c: 2245 1f2ba722SSimon Glass - activate this driver with CONFIG_SYS_I2C_TEGRA 2246 1f2ba722SSimon Glass - This driver adds 4 i2c buses with a fix speed from 2247 1f2ba722SSimon Glass 100000 and the slave addr 0! 2248 1f2ba722SSimon Glass 2249 880540deSDirk Eibach - drivers/i2c/ppc4xx_i2c.c 2250 880540deSDirk Eibach - activate this driver with CONFIG_SYS_I2C_PPC4XX 2251 880540deSDirk Eibach - CONFIG_SYS_I2C_PPC4XX_CH0 activate hardware channel 0 2252 880540deSDirk Eibach - CONFIG_SYS_I2C_PPC4XX_CH1 activate hardware channel 1 2253 880540deSDirk Eibach 2254 fac96408Strem - drivers/i2c/i2c_mxc.c 2255 fac96408Strem - activate this driver with CONFIG_SYS_I2C_MXC 2256 fac96408Strem - define speed for bus 1 with CONFIG_SYS_MXC_I2C1_SPEED 2257 fac96408Strem - define slave for bus 1 with CONFIG_SYS_MXC_I2C1_SLAVE 2258 fac96408Strem - define speed for bus 2 with CONFIG_SYS_MXC_I2C2_SPEED 2259 fac96408Strem - define slave for bus 2 with CONFIG_SYS_MXC_I2C2_SLAVE 2260 fac96408Strem - define speed for bus 3 with CONFIG_SYS_MXC_I2C3_SPEED 2261 fac96408Strem - define slave for bus 3 with CONFIG_SYS_MXC_I2C3_SLAVE 2262 fac96408Strem If thoses defines are not set, default value is 100000 2263 fac96408Strem for speed, and 0 for slave. 2264 fac96408Strem 2265 1086bfa9SNobuhiro Iwamatsu - drivers/i2c/rcar_i2c.c: 2266 1086bfa9SNobuhiro Iwamatsu - activate this driver with CONFIG_SYS_I2C_RCAR 2267 1086bfa9SNobuhiro Iwamatsu - This driver adds 4 i2c buses 2268 1086bfa9SNobuhiro Iwamatsu 2269 1086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C0_BASE for setting the register channel 0 2270 1086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C0_SPEED for for the speed channel 0 2271 1086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C1_BASE for setting the register channel 1 2272 1086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C1_SPEED for for the speed channel 1 2273 1086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C2_BASE for setting the register channel 2 2274 1086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C2_SPEED for for the speed channel 2 2275 1086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C3_BASE for setting the register channel 3 2276 1086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C3_SPEED for for the speed channel 3 2277 1086bfa9SNobuhiro Iwamatsu - CONFIF_SYS_RCAR_I2C_NUM_CONTROLLERS for number of i2c buses 2278 1086bfa9SNobuhiro Iwamatsu 2279 2035d77dSNobuhiro Iwamatsu - drivers/i2c/sh_i2c.c: 2280 2035d77dSNobuhiro Iwamatsu - activate this driver with CONFIG_SYS_I2C_SH 2281 2035d77dSNobuhiro Iwamatsu - This driver adds from 2 to 5 i2c buses 2282 2035d77dSNobuhiro Iwamatsu 2283 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE0 for setting the register channel 0 2284 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED0 for for the speed channel 0 2285 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE1 for setting the register channel 1 2286 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED1 for for the speed channel 1 2287 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE2 for setting the register channel 2 2288 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED2 for for the speed channel 2 2289 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE3 for setting the register channel 3 2290 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED3 for for the speed channel 3 2291 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE4 for setting the register channel 4 2292 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED4 for for the speed channel 4 2293 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE5 for setting the register channel 5 2294 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED5 for for the speed channel 5 2295 2035d77dSNobuhiro Iwamatsu - CONFIF_SYS_I2C_SH_NUM_CONTROLLERS for nummber of i2c buses 2296 2035d77dSNobuhiro Iwamatsu 2297 6789e84eSHeiko Schocher - drivers/i2c/omap24xx_i2c.c 2298 6789e84eSHeiko Schocher - activate this driver with CONFIG_SYS_I2C_OMAP24XX 2299 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED speed channel 0 2300 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE slave addr channel 0 2301 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED1 speed channel 1 2302 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE1 slave addr channel 1 2303 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED2 speed channel 2 2304 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE2 slave addr channel 2 2305 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED3 speed channel 3 2306 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE3 slave addr channel 3 2307 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED4 speed channel 4 2308 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE4 slave addr channel 4 2309 6789e84eSHeiko Schocher 2310 0bdffe71SHeiko Schocher - drivers/i2c/zynq_i2c.c 2311 0bdffe71SHeiko Schocher - activate this driver with CONFIG_SYS_I2C_ZYNQ 2312 0bdffe71SHeiko Schocher - set CONFIG_SYS_I2C_ZYNQ_SPEED for speed setting 2313 0bdffe71SHeiko Schocher - set CONFIG_SYS_I2C_ZYNQ_SLAVE for slave addr 2314 0bdffe71SHeiko Schocher 2315 e717fc6dSNaveen Krishna Ch - drivers/i2c/s3c24x0_i2c.c: 2316 e717fc6dSNaveen Krishna Ch - activate this driver with CONFIG_SYS_I2C_S3C24X0 2317 e717fc6dSNaveen Krishna Ch - This driver adds i2c buses (11 for Exynos5250, Exynos5420 2318 e717fc6dSNaveen Krishna Ch 9 i2c buses for Exynos4 and 1 for S3C24X0 SoCs from Samsung) 2319 e717fc6dSNaveen Krishna Ch with a fix speed from 100000 and the slave addr 0! 2320 e717fc6dSNaveen Krishna Ch 2321 b46226bdSDirk Eibach - drivers/i2c/ihs_i2c.c 2322 b46226bdSDirk Eibach - activate this driver with CONFIG_SYS_I2C_IHS 2323 b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_CH0 activate hardware channel 0 2324 b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_SPEED_0 speed channel 0 2325 b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_SLAVE_0 slave addr channel 0 2326 b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_CH1 activate hardware channel 1 2327 b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_SPEED_1 speed channel 1 2328 b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_SLAVE_1 slave addr channel 1 2329 b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_CH2 activate hardware channel 2 2330 b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_SPEED_2 speed channel 2 2331 b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_SLAVE_2 slave addr channel 2 2332 b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_CH3 activate hardware channel 3 2333 b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_SPEED_3 speed channel 3 2334 b46226bdSDirk Eibach - CONFIG_SYS_I2C_IHS_SLAVE_3 slave addr channel 3 2335 b46226bdSDirk Eibach 2336 3f4978c7SHeiko Schocher additional defines: 2337 3f4978c7SHeiko Schocher 2338 3f4978c7SHeiko Schocher CONFIG_SYS_NUM_I2C_BUSES 2339 3f4978c7SHeiko Schocher Hold the number of i2c busses you want to use. If you 2340 3f4978c7SHeiko Schocher don't use/have i2c muxes on your i2c bus, this 2341 3f4978c7SHeiko Schocher is equal to CONFIG_SYS_NUM_I2C_ADAPTERS, and you can 2342 3f4978c7SHeiko Schocher omit this define. 2343 3f4978c7SHeiko Schocher 2344 3f4978c7SHeiko Schocher CONFIG_SYS_I2C_DIRECT_BUS 2345 3f4978c7SHeiko Schocher define this, if you don't use i2c muxes on your hardware. 2346 3f4978c7SHeiko Schocher if CONFIG_SYS_I2C_MAX_HOPS is not defined or == 0 you can 2347 3f4978c7SHeiko Schocher omit this define. 2348 3f4978c7SHeiko Schocher 2349 3f4978c7SHeiko Schocher CONFIG_SYS_I2C_MAX_HOPS 2350 3f4978c7SHeiko Schocher define how many muxes are maximal consecutively connected 2351 3f4978c7SHeiko Schocher on one i2c bus. If you not use i2c muxes, omit this 2352 3f4978c7SHeiko Schocher define. 2353 3f4978c7SHeiko Schocher 2354 3f4978c7SHeiko Schocher CONFIG_SYS_I2C_BUSES 2355 3f4978c7SHeiko Schocher hold a list of busses you want to use, only used if 2356 3f4978c7SHeiko Schocher CONFIG_SYS_I2C_DIRECT_BUS is not defined, for example 2357 3f4978c7SHeiko Schocher a board with CONFIG_SYS_I2C_MAX_HOPS = 1 and 2358 3f4978c7SHeiko Schocher CONFIG_SYS_NUM_I2C_BUSES = 9: 2359 3f4978c7SHeiko Schocher 2360 3f4978c7SHeiko Schocher CONFIG_SYS_I2C_BUSES {{0, {I2C_NULL_HOP}}, \ 2361 3f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 1}}}, \ 2362 3f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 2}}}, \ 2363 3f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 3}}}, \ 2364 3f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 4}}}, \ 2365 3f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 5}}}, \ 2366 3f4978c7SHeiko Schocher {1, {I2C_NULL_HOP}}, \ 2367 3f4978c7SHeiko Schocher {1, {{I2C_MUX_PCA9544, 0x72, 1}}}, \ 2368 3f4978c7SHeiko Schocher {1, {{I2C_MUX_PCA9544, 0x72, 2}}}, \ 2369 3f4978c7SHeiko Schocher } 2370 3f4978c7SHeiko Schocher 2371 3f4978c7SHeiko Schocher which defines 2372 3f4978c7SHeiko Schocher bus 0 on adapter 0 without a mux 2373 ea818dbbSHeiko Schocher bus 1 on adapter 0 with a PCA9547 on address 0x70 port 1 2374 ea818dbbSHeiko Schocher bus 2 on adapter 0 with a PCA9547 on address 0x70 port 2 2375 ea818dbbSHeiko Schocher bus 3 on adapter 0 with a PCA9547 on address 0x70 port 3 2376 ea818dbbSHeiko Schocher bus 4 on adapter 0 with a PCA9547 on address 0x70 port 4 2377 ea818dbbSHeiko Schocher bus 5 on adapter 0 with a PCA9547 on address 0x70 port 5 2378 3f4978c7SHeiko Schocher bus 6 on adapter 1 without a mux 2379 ea818dbbSHeiko Schocher bus 7 on adapter 1 with a PCA9544 on address 0x72 port 1 2380 ea818dbbSHeiko Schocher bus 8 on adapter 1 with a PCA9544 on address 0x72 port 2 2381 3f4978c7SHeiko Schocher 2382 3f4978c7SHeiko Schocher If you do not have i2c muxes on your board, omit this define. 2383 3f4978c7SHeiko Schocher 2384 ea818dbbSHeiko Schocher- Legacy I2C Support: CONFIG_HARD_I2C 2385 3f4978c7SHeiko Schocher 2386 3f4978c7SHeiko Schocher NOTE: It is intended to move drivers to CONFIG_SYS_I2C which 2387 3f4978c7SHeiko Schocher provides the following compelling advantages: 2388 3f4978c7SHeiko Schocher 2389 3f4978c7SHeiko Schocher - more than one i2c adapter is usable 2390 3f4978c7SHeiko Schocher - approved multibus support 2391 3f4978c7SHeiko Schocher - better i2c mux support 2392 3f4978c7SHeiko Schocher 2393 3f4978c7SHeiko Schocher ** Please consider updating your I2C driver now. ** 2394 3f4978c7SHeiko Schocher 2395 ea818dbbSHeiko Schocher These enable legacy I2C serial bus commands. Defining 2396 ea818dbbSHeiko Schocher CONFIG_HARD_I2C will include the appropriate I2C driver 2397 ea818dbbSHeiko Schocher for the selected CPU. 2398 c609719bSwdenk 2399 b37c7e5eSwdenk This will allow you to use i2c commands at the u-boot 2400 602ad3b3SJon Loeliger command line (as long as you set CONFIG_CMD_I2C in 2401 b37c7e5eSwdenk CONFIG_COMMANDS) and communicate with i2c based realtime 2402 b37c7e5eSwdenk clock chips. See common/cmd_i2c.c for a description of the 2403 c609719bSwdenk command line interface. 2404 c609719bSwdenk 2405 bb99ad6dSBen Warren CONFIG_HARD_I2C selects a hardware I2C controller. 2406 c609719bSwdenk 2407 b37c7e5eSwdenk There are several other quantities that must also be 2408 ea818dbbSHeiko Schocher defined when you define CONFIG_HARD_I2C. 2409 c609719bSwdenk 2410 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD In both cases you will need to define CONFIG_SYS_I2C_SPEED 2411 b37c7e5eSwdenk to be the frequency (in Hz) at which you wish your i2c bus 2412 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD to run and CONFIG_SYS_I2C_SLAVE to be the address of this node (ie 2413 11ccc33fSMarcel Ziswiler the CPU's i2c node address). 2414 c609719bSwdenk 2415 8d321b81SPeter Tyser Now, the u-boot i2c code for the mpc8xx 2416 a47a12beSStefan Roese (arch/powerpc/cpu/mpc8xx/i2c.c) sets the CPU up as a master node 2417 8d321b81SPeter Tyser and so its address should therefore be cleared to 0 (See, 2418 8d321b81SPeter Tyser eg, MPC823e User's Manual p.16-473). So, set 2419 8d321b81SPeter Tyser CONFIG_SYS_I2C_SLAVE to 0. 2420 b37c7e5eSwdenk 2421 5da71efaSEric Millbrandt CONFIG_SYS_I2C_INIT_MPC5XXX 2422 5da71efaSEric Millbrandt 2423 5da71efaSEric Millbrandt When a board is reset during an i2c bus transfer 2424 5da71efaSEric Millbrandt chips might think that the current transfer is still 2425 5da71efaSEric Millbrandt in progress. Reset the slave devices by sending start 2426 5da71efaSEric Millbrandt commands until the slave device responds. 2427 5da71efaSEric Millbrandt 2428 b37c7e5eSwdenk That's all that's required for CONFIG_HARD_I2C. 2429 b37c7e5eSwdenk 2430 ea818dbbSHeiko Schocher If you use the software i2c interface (CONFIG_SYS_I2C_SOFT) 2431 b37c7e5eSwdenk then the following macros need to be defined (examples are 2432 b37c7e5eSwdenk from include/configs/lwmon.h): 2433 c609719bSwdenk 2434 c609719bSwdenk I2C_INIT 2435 c609719bSwdenk 2436 b37c7e5eSwdenk (Optional). Any commands necessary to enable the I2C 2437 c609719bSwdenk controller or configure ports. 2438 c609719bSwdenk 2439 b37c7e5eSwdenk eg: #define I2C_INIT (immr->im_cpm.cp_pbdir |= PB_SCL) 2440 b37c7e5eSwdenk 2441 c609719bSwdenk I2C_PORT 2442 c609719bSwdenk 2443 c609719bSwdenk (Only for MPC8260 CPU). The I/O port to use (the code 2444 c609719bSwdenk assumes both bits are on the same port). Valid values 2445 c609719bSwdenk are 0..3 for ports A..D. 2446 c609719bSwdenk 2447 c609719bSwdenk I2C_ACTIVE 2448 c609719bSwdenk 2449 c609719bSwdenk The code necessary to make the I2C data line active 2450 c609719bSwdenk (driven). If the data line is open collector, this 2451 c609719bSwdenk define can be null. 2452 c609719bSwdenk 2453 b37c7e5eSwdenk eg: #define I2C_ACTIVE (immr->im_cpm.cp_pbdir |= PB_SDA) 2454 b37c7e5eSwdenk 2455 c609719bSwdenk I2C_TRISTATE 2456 c609719bSwdenk 2457 c609719bSwdenk The code necessary to make the I2C data line tri-stated 2458 c609719bSwdenk (inactive). If the data line is open collector, this 2459 c609719bSwdenk define can be null. 2460 c609719bSwdenk 2461 b37c7e5eSwdenk eg: #define I2C_TRISTATE (immr->im_cpm.cp_pbdir &= ~PB_SDA) 2462 b37c7e5eSwdenk 2463 c609719bSwdenk I2C_READ 2464 c609719bSwdenk 2465 472d5460SYork Sun Code that returns true if the I2C data line is high, 2466 472d5460SYork Sun false if it is low. 2467 c609719bSwdenk 2468 b37c7e5eSwdenk eg: #define I2C_READ ((immr->im_cpm.cp_pbdat & PB_SDA) != 0) 2469 b37c7e5eSwdenk 2470 c609719bSwdenk I2C_SDA(bit) 2471 c609719bSwdenk 2472 472d5460SYork Sun If <bit> is true, sets the I2C data line high. If it 2473 472d5460SYork Sun is false, it clears it (low). 2474 c609719bSwdenk 2475 b37c7e5eSwdenk eg: #define I2C_SDA(bit) \ 2476 b37c7e5eSwdenk if(bit) immr->im_cpm.cp_pbdat |= PB_SDA; \ 2477 b37c7e5eSwdenk else immr->im_cpm.cp_pbdat &= ~PB_SDA 2478 b37c7e5eSwdenk 2479 c609719bSwdenk I2C_SCL(bit) 2480 c609719bSwdenk 2481 472d5460SYork Sun If <bit> is true, sets the I2C clock line high. If it 2482 472d5460SYork Sun is false, it clears it (low). 2483 c609719bSwdenk 2484 b37c7e5eSwdenk eg: #define I2C_SCL(bit) \ 2485 b37c7e5eSwdenk if(bit) immr->im_cpm.cp_pbdat |= PB_SCL; \ 2486 b37c7e5eSwdenk else immr->im_cpm.cp_pbdat &= ~PB_SCL 2487 b37c7e5eSwdenk 2488 c609719bSwdenk I2C_DELAY 2489 c609719bSwdenk 2490 c609719bSwdenk This delay is invoked four times per clock cycle so this 2491 c609719bSwdenk controls the rate of data transfer. The data rate thus 2492 b37c7e5eSwdenk is 1 / (I2C_DELAY * 4). Often defined to be something 2493 b37c7e5eSwdenk like: 2494 b37c7e5eSwdenk 2495 b37c7e5eSwdenk #define I2C_DELAY udelay(2) 2496 c609719bSwdenk 2497 793b5726SMike Frysinger CONFIG_SOFT_I2C_GPIO_SCL / CONFIG_SOFT_I2C_GPIO_SDA 2498 793b5726SMike Frysinger 2499 793b5726SMike Frysinger If your arch supports the generic GPIO framework (asm/gpio.h), 2500 793b5726SMike Frysinger then you may alternatively define the two GPIOs that are to be 2501 793b5726SMike Frysinger used as SCL / SDA. Any of the previous I2C_xxx macros will 2502 793b5726SMike Frysinger have GPIO-based defaults assigned to them as appropriate. 2503 793b5726SMike Frysinger 2504 793b5726SMike Frysinger You should define these to the GPIO value as given directly to 2505 793b5726SMike Frysinger the generic GPIO functions. 2506 793b5726SMike Frysinger 2507 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_INIT_BOARD 2508 47cd00faSwdenk 2509 47cd00faSwdenk When a board is reset during an i2c bus transfer 2510 47cd00faSwdenk chips might think that the current transfer is still 2511 47cd00faSwdenk in progress. On some boards it is possible to access 2512 47cd00faSwdenk the i2c SCLK line directly, either by using the 2513 47cd00faSwdenk processor pin as a GPIO or by having a second pin 2514 47cd00faSwdenk connected to the bus. If this option is defined a 2515 47cd00faSwdenk custom i2c_init_board() routine in boards/xxx/board.c 2516 47cd00faSwdenk is run early in the boot sequence. 2517 47cd00faSwdenk 2518 26a33504SRichard Retanubun CONFIG_SYS_I2C_BOARD_LATE_INIT 2519 26a33504SRichard Retanubun 2520 26a33504SRichard Retanubun An alternative to CONFIG_SYS_I2C_INIT_BOARD. If this option is 2521 26a33504SRichard Retanubun defined a custom i2c_board_late_init() routine in 2522 26a33504SRichard Retanubun boards/xxx/board.c is run AFTER the operations in i2c_init() 2523 26a33504SRichard Retanubun is completed. This callpoint can be used to unreset i2c bus 2524 26a33504SRichard Retanubun using CPU i2c controller register accesses for CPUs whose i2c 2525 26a33504SRichard Retanubun controller provide such a method. It is called at the end of 2526 26a33504SRichard Retanubun i2c_init() to allow i2c_init operations to setup the i2c bus 2527 26a33504SRichard Retanubun controller on the CPU (e.g. setting bus speed & slave address). 2528 26a33504SRichard Retanubun 2529 17ea1177Swdenk CONFIG_I2CFAST (PPC405GP|PPC405EP only) 2530 17ea1177Swdenk 2531 17ea1177Swdenk This option enables configuration of bi_iic_fast[] flags 2532 17ea1177Swdenk in u-boot bd_info structure based on u-boot environment 2533 17ea1177Swdenk variable "i2cfast". (see also i2cfast) 2534 17ea1177Swdenk 2535 bb99ad6dSBen Warren CONFIG_I2C_MULTI_BUS 2536 bb99ad6dSBen Warren 2537 bb99ad6dSBen Warren This option allows the use of multiple I2C buses, each of which 2538 bb99ad6dSBen Warren must have a controller. At any point in time, only one bus is 2539 bb99ad6dSBen Warren active. To switch to a different bus, use the 'i2c dev' command. 2540 bb99ad6dSBen Warren Note that bus numbering is zero-based. 2541 bb99ad6dSBen Warren 2542 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_NOPROBES 2543 bb99ad6dSBen Warren 2544 bb99ad6dSBen Warren This option specifies a list of I2C devices that will be skipped 2545 0f89c54bSPeter Tyser when the 'i2c probe' command is issued. If CONFIG_I2C_MULTI_BUS 2546 0f89c54bSPeter Tyser is set, specify a list of bus-device pairs. Otherwise, specify 2547 0f89c54bSPeter Tyser a 1D array of device addresses 2548 bb99ad6dSBen Warren 2549 bb99ad6dSBen Warren e.g. 2550 bb99ad6dSBen Warren #undef CONFIG_I2C_MULTI_BUS 2551 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_I2C_NOPROBES {0x50,0x68} 2552 bb99ad6dSBen Warren 2553 bb99ad6dSBen Warren will skip addresses 0x50 and 0x68 on a board with one I2C bus 2554 bb99ad6dSBen Warren 2555 bb99ad6dSBen Warren #define CONFIG_I2C_MULTI_BUS 2556 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_I2C_MULTI_NOPROBES {{0,0x50},{0,0x68},{1,0x54}} 2557 bb99ad6dSBen Warren 2558 bb99ad6dSBen Warren will skip addresses 0x50 and 0x68 on bus 0 and address 0x54 on bus 1 2559 bb99ad6dSBen Warren 2560 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SPD_BUS_NUM 2561 be5e6181STimur Tabi 2562 be5e6181STimur Tabi If defined, then this indicates the I2C bus number for DDR SPD. 2563 be5e6181STimur Tabi If not defined, then U-Boot assumes that SPD is on I2C bus 0. 2564 be5e6181STimur Tabi 2565 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_RTC_BUS_NUM 2566 0dc018ecSStefan Roese 2567 0dc018ecSStefan Roese If defined, then this indicates the I2C bus number for the RTC. 2568 0dc018ecSStefan Roese If not defined, then U-Boot assumes that RTC is on I2C bus 0. 2569 0dc018ecSStefan Roese 2570 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_DTT_BUS_NUM 2571 0dc018ecSStefan Roese 2572 0dc018ecSStefan Roese If defined, then this indicates the I2C bus number for the DTT. 2573 0dc018ecSStefan Roese If not defined, then U-Boot assumes that DTT is on I2C bus 0. 2574 0dc018ecSStefan Roese 2575 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_DTT_ADDR: 2576 9ebbb54fSVictor Gallardo 2577 9ebbb54fSVictor Gallardo If defined, specifies the I2C address of the DTT device. 2578 9ebbb54fSVictor Gallardo If not defined, then U-Boot uses predefined value for 2579 9ebbb54fSVictor Gallardo specified DTT device. 2580 9ebbb54fSVictor Gallardo 2581 2ac6985aSAndrew Dyer CONFIG_SOFT_I2C_READ_REPEATED_START 2582 2ac6985aSAndrew Dyer 2583 2ac6985aSAndrew Dyer defining this will force the i2c_read() function in 2584 2ac6985aSAndrew Dyer the soft_i2c driver to perform an I2C repeated start 2585 2ac6985aSAndrew Dyer between writing the address pointer and reading the 2586 2ac6985aSAndrew Dyer data. If this define is omitted the default behaviour 2587 2ac6985aSAndrew Dyer of doing a stop-start sequence will be used. Most I2C 2588 2ac6985aSAndrew Dyer devices can use either method, but some require one or 2589 2ac6985aSAndrew Dyer the other. 2590 be5e6181STimur Tabi 2591 c609719bSwdenk- SPI Support: CONFIG_SPI 2592 c609719bSwdenk 2593 c609719bSwdenk Enables SPI driver (so far only tested with 2594 c609719bSwdenk SPI EEPROM, also an instance works with Crystal A/D and 2595 c609719bSwdenk D/As on the SACSng board) 2596 c609719bSwdenk 2597 6639562eSYoshihiro Shimoda CONFIG_SH_SPI 2598 6639562eSYoshihiro Shimoda 2599 6639562eSYoshihiro Shimoda Enables the driver for SPI controller on SuperH. Currently 2600 6639562eSYoshihiro Shimoda only SH7757 is supported. 2601 6639562eSYoshihiro Shimoda 2602 c609719bSwdenk CONFIG_SPI_X 2603 c609719bSwdenk 2604 c609719bSwdenk Enables extended (16-bit) SPI EEPROM addressing. 2605 c609719bSwdenk (symmetrical to CONFIG_I2C_X) 2606 c609719bSwdenk 2607 c609719bSwdenk CONFIG_SOFT_SPI 2608 c609719bSwdenk 2609 c609719bSwdenk Enables a software (bit-bang) SPI driver rather than 2610 c609719bSwdenk using hardware support. This is a general purpose 2611 c609719bSwdenk driver that only requires three general I/O port pins 2612 c609719bSwdenk (two outputs, one input) to function. If this is 2613 c609719bSwdenk defined, the board configuration must define several 2614 c609719bSwdenk SPI configuration items (port pins to use, etc). For 2615 c609719bSwdenk an example, see include/configs/sacsng.h. 2616 c609719bSwdenk 2617 04a9e118SBen Warren CONFIG_HARD_SPI 2618 04a9e118SBen Warren 2619 04a9e118SBen Warren Enables a hardware SPI driver for general-purpose reads 2620 04a9e118SBen Warren and writes. As with CONFIG_SOFT_SPI, the board configuration 2621 04a9e118SBen Warren must define a list of chip-select function pointers. 2622 04a9e118SBen Warren Currently supported on some MPC8xxx processors. For an 2623 04a9e118SBen Warren example, see include/configs/mpc8349emds.h. 2624 04a9e118SBen Warren 2625 38254f45SGuennadi Liakhovetski CONFIG_MXC_SPI 2626 38254f45SGuennadi Liakhovetski 2627 38254f45SGuennadi Liakhovetski Enables the driver for the SPI controllers on i.MX and MXC 2628 2e3cd1cdSFabio Estevam SoCs. Currently i.MX31/35/51 are supported. 2629 38254f45SGuennadi Liakhovetski 2630 f659b573SHeiko Schocher CONFIG_SYS_SPI_MXC_WAIT 2631 f659b573SHeiko Schocher Timeout for waiting until spi transfer completed. 2632 f659b573SHeiko Schocher default: (CONFIG_SYS_HZ/100) /* 10 ms */ 2633 f659b573SHeiko Schocher 2634 0133502eSMatthias Fuchs- FPGA Support: CONFIG_FPGA 2635 0133502eSMatthias Fuchs 2636 0133502eSMatthias Fuchs Enables FPGA subsystem. 2637 0133502eSMatthias Fuchs 2638 0133502eSMatthias Fuchs CONFIG_FPGA_<vendor> 2639 0133502eSMatthias Fuchs 2640 0133502eSMatthias Fuchs Enables support for specific chip vendors. 2641 0133502eSMatthias Fuchs (ALTERA, XILINX) 2642 0133502eSMatthias Fuchs 2643 0133502eSMatthias Fuchs CONFIG_FPGA_<family> 2644 0133502eSMatthias Fuchs 2645 0133502eSMatthias Fuchs Enables support for FPGA family. 2646 0133502eSMatthias Fuchs (SPARTAN2, SPARTAN3, VIRTEX2, CYCLONE2, ACEX1K, ACEX) 2647 0133502eSMatthias Fuchs 2648 0133502eSMatthias Fuchs CONFIG_FPGA_COUNT 2649 c609719bSwdenk 2650 c609719bSwdenk Specify the number of FPGA devices to support. 2651 c609719bSwdenk 2652 64e809afSSiva Durga Prasad Paladugu CONFIG_CMD_FPGA_LOADMK 2653 64e809afSSiva Durga Prasad Paladugu 2654 64e809afSSiva Durga Prasad Paladugu Enable support for fpga loadmk command 2655 64e809afSSiva Durga Prasad Paladugu 2656 67193864SMichal Simek CONFIG_CMD_FPGA_LOADP 2657 67193864SMichal Simek 2658 67193864SMichal Simek Enable support for fpga loadp command - load partial bitstream 2659 67193864SMichal Simek 2660 67193864SMichal Simek CONFIG_CMD_FPGA_LOADBP 2661 67193864SMichal Simek 2662 67193864SMichal Simek Enable support for fpga loadbp command - load partial bitstream 2663 67193864SMichal Simek (Xilinx only) 2664 67193864SMichal Simek 2665 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_PROG_FEEDBACK 2666 c609719bSwdenk 2667 c609719bSwdenk Enable printing of hash marks during FPGA configuration. 2668 c609719bSwdenk 2669 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_BUSY 2670 c609719bSwdenk 2671 c609719bSwdenk Enable checks on FPGA configuration interface busy 2672 c609719bSwdenk status by the configuration function. This option 2673 c609719bSwdenk will require a board or device specific function to 2674 c609719bSwdenk be written. 2675 c609719bSwdenk 2676 c609719bSwdenk CONFIG_FPGA_DELAY 2677 c609719bSwdenk 2678 c609719bSwdenk If defined, a function that provides delays in the FPGA 2679 c609719bSwdenk configuration driver. 2680 c609719bSwdenk 2681 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_CTRLC 2682 c609719bSwdenk Allow Control-C to interrupt FPGA configuration 2683 c609719bSwdenk 2684 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_ERROR 2685 c609719bSwdenk 2686 c609719bSwdenk Check for configuration errors during FPGA bitfile 2687 c609719bSwdenk loading. For example, abort during Virtex II 2688 c609719bSwdenk configuration if the INIT_B line goes low (which 2689 c609719bSwdenk indicated a CRC error). 2690 c609719bSwdenk 2691 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_INIT 2692 c609719bSwdenk 2693 c609719bSwdenk Maximum time to wait for the INIT_B line to deassert 2694 c609719bSwdenk after PROB_B has been deasserted during a Virtex II 2695 c609719bSwdenk FPGA configuration sequence. The default time is 500 2696 11ccc33fSMarcel Ziswiler ms. 2697 c609719bSwdenk 2698 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_BUSY 2699 c609719bSwdenk 2700 c609719bSwdenk Maximum time to wait for BUSY to deassert during 2701 11ccc33fSMarcel Ziswiler Virtex II FPGA configuration. The default is 5 ms. 2702 c609719bSwdenk 2703 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_CONFIG 2704 c609719bSwdenk 2705 c609719bSwdenk Time to wait after FPGA configuration. The default is 2706 11ccc33fSMarcel Ziswiler 200 ms. 2707 c609719bSwdenk 2708 c609719bSwdenk- Configuration Management: 2709 c609719bSwdenk CONFIG_IDENT_STRING 2710 c609719bSwdenk 2711 c609719bSwdenk If defined, this string will be added to the U-Boot 2712 c609719bSwdenk version information (U_BOOT_VERSION) 2713 c609719bSwdenk 2714 c609719bSwdenk- Vendor Parameter Protection: 2715 c609719bSwdenk 2716 c609719bSwdenk U-Boot considers the values of the environment 2717 c609719bSwdenk variables "serial#" (Board Serial Number) and 2718 7152b1d0Swdenk "ethaddr" (Ethernet Address) to be parameters that 2719 c609719bSwdenk are set once by the board vendor / manufacturer, and 2720 c609719bSwdenk protects these variables from casual modification by 2721 c609719bSwdenk the user. Once set, these variables are read-only, 2722 c609719bSwdenk and write or delete attempts are rejected. You can 2723 11ccc33fSMarcel Ziswiler change this behaviour: 2724 c609719bSwdenk 2725 c609719bSwdenk If CONFIG_ENV_OVERWRITE is #defined in your config 2726 c609719bSwdenk file, the write protection for vendor parameters is 2727 47cd00faSwdenk completely disabled. Anybody can change or delete 2728 c609719bSwdenk these parameters. 2729 c609719bSwdenk 2730 c609719bSwdenk Alternatively, if you #define _both_ CONFIG_ETHADDR 2731 c609719bSwdenk _and_ CONFIG_OVERWRITE_ETHADDR_ONCE, a default 2732 11ccc33fSMarcel Ziswiler Ethernet address is installed in the environment, 2733 c609719bSwdenk which can be changed exactly ONCE by the user. [The 2734 c609719bSwdenk serial# is unaffected by this, i. e. it remains 2735 c609719bSwdenk read-only.] 2736 c609719bSwdenk 2737 2598090bSJoe Hershberger The same can be accomplished in a more flexible way 2738 2598090bSJoe Hershberger for any variable by configuring the type of access 2739 2598090bSJoe Hershberger to allow for those variables in the ".flags" variable 2740 2598090bSJoe Hershberger or define CONFIG_ENV_FLAGS_LIST_STATIC. 2741 2598090bSJoe Hershberger 2742 c609719bSwdenk- Protected RAM: 2743 c609719bSwdenk CONFIG_PRAM 2744 c609719bSwdenk 2745 c609719bSwdenk Define this variable to enable the reservation of 2746 c609719bSwdenk "protected RAM", i. e. RAM which is not overwritten 2747 c609719bSwdenk by U-Boot. Define CONFIG_PRAM to hold the number of 2748 c609719bSwdenk kB you want to reserve for pRAM. You can overwrite 2749 c609719bSwdenk this default value by defining an environment 2750 c609719bSwdenk variable "pram" to the number of kB you want to 2751 c609719bSwdenk reserve. Note that the board info structure will 2752 c609719bSwdenk still show the full amount of RAM. If pRAM is 2753 c609719bSwdenk reserved, a new environment variable "mem" will 2754 c609719bSwdenk automatically be defined to hold the amount of 2755 c609719bSwdenk remaining RAM in a form that can be passed as boot 2756 c609719bSwdenk argument to Linux, for instance like that: 2757 c609719bSwdenk 2758 fe126d8bSWolfgang Denk setenv bootargs ... mem=\${mem} 2759 c609719bSwdenk saveenv 2760 c609719bSwdenk 2761 c609719bSwdenk This way you can tell Linux not to use this memory, 2762 c609719bSwdenk either, which results in a memory region that will 2763 c609719bSwdenk not be affected by reboots. 2764 c609719bSwdenk 2765 c609719bSwdenk *WARNING* If your board configuration uses automatic 2766 c609719bSwdenk detection of the RAM size, you must make sure that 2767 c609719bSwdenk this memory test is non-destructive. So far, the 2768 c609719bSwdenk following board configurations are known to be 2769 c609719bSwdenk "pRAM-clean": 2770 c609719bSwdenk 2771 1b0757ecSWolfgang Denk IVMS8, IVML24, SPD8xx, TQM8xxL, 2772 1b0757ecSWolfgang Denk HERMES, IP860, RPXlite, LWMON, 2773 544d97e9SWolfgang Denk FLAGADM, TQM8260 2774 c609719bSwdenk 2775 40fef049SGabe Black- Access to physical memory region (> 4GB) 2776 40fef049SGabe Black Some basic support is provided for operations on memory not 2777 40fef049SGabe Black normally accessible to U-Boot - e.g. some architectures 2778 40fef049SGabe Black support access to more than 4GB of memory on 32-bit 2779 40fef049SGabe Black machines using physical address extension or similar. 2780 40fef049SGabe Black Define CONFIG_PHYSMEM to access this basic support, which 2781 40fef049SGabe Black currently only supports clearing the memory. 2782 40fef049SGabe Black 2783 c609719bSwdenk- Error Recovery: 2784 c609719bSwdenk CONFIG_PANIC_HANG 2785 c609719bSwdenk 2786 c609719bSwdenk Define this variable to stop the system in case of a 2787 c609719bSwdenk fatal error, so that you have to reset it manually. 2788 c609719bSwdenk This is probably NOT a good idea for an embedded 2789 11ccc33fSMarcel Ziswiler system where you want the system to reboot 2790 c609719bSwdenk automatically as fast as possible, but it may be 2791 c609719bSwdenk useful during development since you can try to debug 2792 c609719bSwdenk the conditions that lead to the situation. 2793 c609719bSwdenk 2794 c609719bSwdenk CONFIG_NET_RETRY_COUNT 2795 c609719bSwdenk 2796 c609719bSwdenk This variable defines the number of retries for 2797 c609719bSwdenk network operations like ARP, RARP, TFTP, or BOOTP 2798 c609719bSwdenk before giving up the operation. If not defined, a 2799 c609719bSwdenk default value of 5 is used. 2800 c609719bSwdenk 2801 40cb90eeSGuennadi Liakhovetski CONFIG_ARP_TIMEOUT 2802 40cb90eeSGuennadi Liakhovetski 2803 40cb90eeSGuennadi Liakhovetski Timeout waiting for an ARP reply in milliseconds. 2804 40cb90eeSGuennadi Liakhovetski 2805 48a3e999STetsuyuki Kobayashi CONFIG_NFS_TIMEOUT 2806 48a3e999STetsuyuki Kobayashi 2807 48a3e999STetsuyuki Kobayashi Timeout in milliseconds used in NFS protocol. 2808 48a3e999STetsuyuki Kobayashi If you encounter "ERROR: Cannot umount" in nfs command, 2809 48a3e999STetsuyuki Kobayashi try longer timeout such as 2810 48a3e999STetsuyuki Kobayashi #define CONFIG_NFS_TIMEOUT 10000UL 2811 48a3e999STetsuyuki Kobayashi 2812 c609719bSwdenk- Command Interpreter: 2813 8078f1a5SWolfgang Denk CONFIG_AUTO_COMPLETE 2814 04a85b3bSwdenk 2815 04a85b3bSwdenk Enable auto completion of commands using TAB. 2816 04a85b3bSwdenk 2817 8078f1a5SWolfgang Denk Note that this feature has NOT been implemented yet 2818 8078f1a5SWolfgang Denk for the "hush" shell. 2819 8078f1a5SWolfgang Denk 2820 8078f1a5SWolfgang Denk 2821 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_HUSH_PARSER 2822 c609719bSwdenk 2823 c609719bSwdenk Define this variable to enable the "hush" shell (from 2824 c609719bSwdenk Busybox) as command line interpreter, thus enabling 2825 c609719bSwdenk powerful command line syntax like 2826 c609719bSwdenk if...then...else...fi conditionals or `&&' and '||' 2827 c609719bSwdenk constructs ("shell scripts"). 2828 c609719bSwdenk 2829 c609719bSwdenk If undefined, you get the old, much simpler behaviour 2830 c609719bSwdenk with a somewhat smaller memory footprint. 2831 c609719bSwdenk 2832 c609719bSwdenk 2833 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PROMPT_HUSH_PS2 2834 c609719bSwdenk 2835 c609719bSwdenk This defines the secondary prompt string, which is 2836 c609719bSwdenk printed when the command interpreter needs more input 2837 c609719bSwdenk to complete a command. Usually "> ". 2838 c609719bSwdenk 2839 c609719bSwdenk Note: 2840 c609719bSwdenk 2841 c609719bSwdenk In the current implementation, the local variables 2842 c609719bSwdenk space and global environment variables space are 2843 c609719bSwdenk separated. Local variables are those you define by 2844 3b57fe0aSwdenk simply typing `name=value'. To access a local 2845 c609719bSwdenk variable later on, you have write `$name' or 2846 3b57fe0aSwdenk `${name}'; to execute the contents of a variable 2847 3b57fe0aSwdenk directly type `$name' at the command prompt. 2848 c609719bSwdenk 2849 c609719bSwdenk Global environment variables are those you use 2850 c609719bSwdenk setenv/printenv to work with. To run a command stored 2851 c609719bSwdenk in such a variable, you need to use the run command, 2852 c609719bSwdenk and you must not use the '$' sign to access them. 2853 c609719bSwdenk 2854 c609719bSwdenk To store commands and special characters in a 2855 c609719bSwdenk variable, please use double quotation marks 2856 c609719bSwdenk surrounding the whole text of the variable, instead 2857 c609719bSwdenk of the backslashes before semicolons and special 2858 c609719bSwdenk symbols. 2859 c609719bSwdenk 2860 aa0c71acSWolfgang Denk- Commandline Editing and History: 2861 aa0c71acSWolfgang Denk CONFIG_CMDLINE_EDITING 2862 aa0c71acSWolfgang Denk 2863 11ccc33fSMarcel Ziswiler Enable editing and History functions for interactive 2864 aa0c71acSWolfgang Denk commandline input operations 2865 aa0c71acSWolfgang Denk 2866 a8c7c708Swdenk- Default Environment: 2867 c609719bSwdenk CONFIG_EXTRA_ENV_SETTINGS 2868 c609719bSwdenk 2869 c609719bSwdenk Define this to contain any number of null terminated 2870 c609719bSwdenk strings (variable = value pairs) that will be part of 2871 7152b1d0Swdenk the default environment compiled into the boot image. 2872 2262cfeeSwdenk 2873 c609719bSwdenk For example, place something like this in your 2874 c609719bSwdenk board's config file: 2875 c609719bSwdenk 2876 c609719bSwdenk #define CONFIG_EXTRA_ENV_SETTINGS \ 2877 c609719bSwdenk "myvar1=value1\0" \ 2878 c609719bSwdenk "myvar2=value2\0" 2879 c609719bSwdenk 2880 c609719bSwdenk Warning: This method is based on knowledge about the 2881 c609719bSwdenk internal format how the environment is stored by the 2882 2262cfeeSwdenk U-Boot code. This is NOT an official, exported 2883 c609719bSwdenk interface! Although it is unlikely that this format 2884 7152b1d0Swdenk will change soon, there is no guarantee either. 2885 c609719bSwdenk You better know what you are doing here. 2886 c609719bSwdenk 2887 c609719bSwdenk Note: overly (ab)use of the default environment is 2888 c609719bSwdenk discouraged. Make sure to check other ways to preset 2889 74de7aefSWolfgang Denk the environment like the "source" command or the 2890 c609719bSwdenk boot command first. 2891 c609719bSwdenk 2892 5e724ca2SStephen Warren CONFIG_ENV_VARS_UBOOT_CONFIG 2893 5e724ca2SStephen Warren 2894 5e724ca2SStephen Warren Define this in order to add variables describing the 2895 5e724ca2SStephen Warren U-Boot build configuration to the default environment. 2896 5e724ca2SStephen Warren These will be named arch, cpu, board, vendor, and soc. 2897 5e724ca2SStephen Warren 2898 5e724ca2SStephen Warren Enabling this option will cause the following to be defined: 2899 5e724ca2SStephen Warren 2900 5e724ca2SStephen Warren - CONFIG_SYS_ARCH 2901 5e724ca2SStephen Warren - CONFIG_SYS_CPU 2902 5e724ca2SStephen Warren - CONFIG_SYS_BOARD 2903 5e724ca2SStephen Warren - CONFIG_SYS_VENDOR 2904 5e724ca2SStephen Warren - CONFIG_SYS_SOC 2905 5e724ca2SStephen Warren 2906 7e27f89fSTom Rini CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG 2907 7e27f89fSTom Rini 2908 7e27f89fSTom Rini Define this in order to add variables describing certain 2909 7e27f89fSTom Rini run-time determined information about the hardware to the 2910 7e27f89fSTom Rini environment. These will be named board_name, board_rev. 2911 7e27f89fSTom Rini 2912 06fd8538SSimon Glass CONFIG_DELAY_ENVIRONMENT 2913 06fd8538SSimon Glass 2914 06fd8538SSimon Glass Normally the environment is loaded when the board is 2915 06fd8538SSimon Glass intialised so that it is available to U-Boot. This inhibits 2916 06fd8538SSimon Glass that so that the environment is not available until 2917 06fd8538SSimon Glass explicitly loaded later by U-Boot code. With CONFIG_OF_CONTROL 2918 06fd8538SSimon Glass this is instead controlled by the value of 2919 06fd8538SSimon Glass /config/load-environment. 2920 06fd8538SSimon Glass 2921 a8c7c708Swdenk- DataFlash Support: 2922 2abbe075Swdenk CONFIG_HAS_DATAFLASH 2923 2abbe075Swdenk 2924 2abbe075Swdenk Defining this option enables DataFlash features and 2925 2abbe075Swdenk allows to read/write in Dataflash via the standard 2926 2abbe075Swdenk commands cp, md... 2927 2abbe075Swdenk 2928 f61ec45eSEric Nelson- Serial Flash support 2929 f61ec45eSEric Nelson CONFIG_CMD_SF 2930 f61ec45eSEric Nelson 2931 f61ec45eSEric Nelson Defining this option enables SPI flash commands 2932 f61ec45eSEric Nelson 'sf probe/read/write/erase/update'. 2933 f61ec45eSEric Nelson 2934 f61ec45eSEric Nelson Usage requires an initial 'probe' to define the serial 2935 f61ec45eSEric Nelson flash parameters, followed by read/write/erase/update 2936 f61ec45eSEric Nelson commands. 2937 f61ec45eSEric Nelson 2938 f61ec45eSEric Nelson The following defaults may be provided by the platform 2939 f61ec45eSEric Nelson to handle the common case when only a single serial 2940 f61ec45eSEric Nelson flash is present on the system. 2941 f61ec45eSEric Nelson 2942 f61ec45eSEric Nelson CONFIG_SF_DEFAULT_BUS Bus identifier 2943 f61ec45eSEric Nelson CONFIG_SF_DEFAULT_CS Chip-select 2944 f61ec45eSEric Nelson CONFIG_SF_DEFAULT_MODE (see include/spi.h) 2945 f61ec45eSEric Nelson CONFIG_SF_DEFAULT_SPEED in Hz 2946 f61ec45eSEric Nelson 2947 24007273SSimon Glass CONFIG_CMD_SF_TEST 2948 24007273SSimon Glass 2949 24007273SSimon Glass Define this option to include a destructive SPI flash 2950 24007273SSimon Glass test ('sf test'). 2951 24007273SSimon Glass 2952 1dcd6d03SJagannadha Sutradharudu Teki CONFIG_SPI_FLASH_BAR Ban/Extended Addr Reg 2953 1dcd6d03SJagannadha Sutradharudu Teki 2954 1dcd6d03SJagannadha Sutradharudu Teki Define this option to use the Bank addr/Extended addr 2955 1dcd6d03SJagannadha Sutradharudu Teki support on SPI flashes which has size > 16Mbytes. 2956 1dcd6d03SJagannadha Sutradharudu Teki 2957 b902e07cSJagannadha Sutradharudu Teki CONFIG_SF_DUAL_FLASH Dual flash memories 2958 b902e07cSJagannadha Sutradharudu Teki 2959 b902e07cSJagannadha Sutradharudu Teki Define this option to use dual flash support where two flash 2960 b902e07cSJagannadha Sutradharudu Teki memories can be connected with a given cs line. 2961 b902e07cSJagannadha Sutradharudu Teki currently Xilinx Zynq qspi support these type of connections. 2962 b902e07cSJagannadha Sutradharudu Teki 2963 562f8df1SHeiko Schocher CONFIG_SYS_SPI_ST_ENABLE_WP_PIN 2964 562f8df1SHeiko Schocher enable the W#/Vpp signal to disable writing to the status 2965 562f8df1SHeiko Schocher register on ST MICRON flashes like the N25Q128. 2966 562f8df1SHeiko Schocher The status register write enable/disable bit, combined with 2967 562f8df1SHeiko Schocher the W#/VPP signal provides hardware data protection for the 2968 562f8df1SHeiko Schocher device as follows: When the enable/disable bit is set to 1, 2969 562f8df1SHeiko Schocher and the W#/VPP signal is driven LOW, the status register 2970 562f8df1SHeiko Schocher nonvolatile bits become read-only and the WRITE STATUS REGISTER 2971 562f8df1SHeiko Schocher operation will not execute. The only way to exit this 2972 562f8df1SHeiko Schocher hardware-protected mode is to drive W#/VPP HIGH. 2973 562f8df1SHeiko Schocher 2974 3f85ce27Swdenk- SystemACE Support: 2975 3f85ce27Swdenk CONFIG_SYSTEMACE 2976 3f85ce27Swdenk 2977 3f85ce27Swdenk Adding this option adds support for Xilinx SystemACE 2978 3f85ce27Swdenk chips attached via some sort of local bus. The address 2979 11ccc33fSMarcel Ziswiler of the chip must also be defined in the 2980 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SYSTEMACE_BASE macro. For example: 2981 3f85ce27Swdenk 2982 3f85ce27Swdenk #define CONFIG_SYSTEMACE 2983 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_SYSTEMACE_BASE 0xf0000000 2984 3f85ce27Swdenk 2985 3f85ce27Swdenk When SystemACE support is added, the "ace" device type 2986 3f85ce27Swdenk becomes available to the fat commands, i.e. fatls. 2987 3f85ce27Swdenk 2988 ecb0ccd9SWolfgang Denk- TFTP Fixed UDP Port: 2989 ecb0ccd9SWolfgang Denk CONFIG_TFTP_PORT 2990 ecb0ccd9SWolfgang Denk 2991 28cb9375SWolfgang Denk If this is defined, the environment variable tftpsrcp 2992 ecb0ccd9SWolfgang Denk is used to supply the TFTP UDP source port value. 2993 28cb9375SWolfgang Denk If tftpsrcp isn't defined, the normal pseudo-random port 2994 ecb0ccd9SWolfgang Denk number generator is used. 2995 ecb0ccd9SWolfgang Denk 2996 28cb9375SWolfgang Denk Also, the environment variable tftpdstp is used to supply 2997 28cb9375SWolfgang Denk the TFTP UDP destination port value. If tftpdstp isn't 2998 28cb9375SWolfgang Denk defined, the normal port 69 is used. 2999 28cb9375SWolfgang Denk 3000 28cb9375SWolfgang Denk The purpose for tftpsrcp is to allow a TFTP server to 3001 ecb0ccd9SWolfgang Denk blindly start the TFTP transfer using the pre-configured 3002 ecb0ccd9SWolfgang Denk target IP address and UDP port. This has the effect of 3003 ecb0ccd9SWolfgang Denk "punching through" the (Windows XP) firewall, allowing 3004 ecb0ccd9SWolfgang Denk the remainder of the TFTP transfer to proceed normally. 3005 ecb0ccd9SWolfgang Denk A better solution is to properly configure the firewall, 3006 ecb0ccd9SWolfgang Denk but sometimes that is not allowed. 3007 ecb0ccd9SWolfgang Denk 3008 bf36c5d5SSimon Glass- Hashing support: 3009 bf36c5d5SSimon Glass CONFIG_CMD_HASH 3010 bf36c5d5SSimon Glass 3011 bf36c5d5SSimon Glass This enables a generic 'hash' command which can produce 3012 bf36c5d5SSimon Glass hashes / digests from a few algorithms (e.g. SHA1, SHA256). 3013 bf36c5d5SSimon Glass 3014 bf36c5d5SSimon Glass CONFIG_HASH_VERIFY 3015 bf36c5d5SSimon Glass 3016 bf36c5d5SSimon Glass Enable the hash verify command (hash -v). This adds to code 3017 bf36c5d5SSimon Glass size a little. 3018 bf36c5d5SSimon Glass 3019 bf36c5d5SSimon Glass CONFIG_SHA1 - support SHA1 hashing 3020 bf36c5d5SSimon Glass CONFIG_SHA256 - support SHA256 hashing 3021 bf36c5d5SSimon Glass 3022 bf36c5d5SSimon Glass Note: There is also a sha1sum command, which should perhaps 3023 bf36c5d5SSimon Glass be deprecated in favour of 'hash sha1'. 3024 bf36c5d5SSimon Glass 3025 a11f1873SRobert Winkler- Freescale i.MX specific commands: 3026 a11f1873SRobert Winkler CONFIG_CMD_HDMIDETECT 3027 a11f1873SRobert Winkler This enables 'hdmidet' command which returns true if an 3028 a11f1873SRobert Winkler HDMI monitor is detected. This command is i.MX 6 specific. 3029 a11f1873SRobert Winkler 3030 a11f1873SRobert Winkler CONFIG_CMD_BMODE 3031 a11f1873SRobert Winkler This enables the 'bmode' (bootmode) command for forcing 3032 a11f1873SRobert Winkler a boot from specific media. 3033 a11f1873SRobert Winkler 3034 a11f1873SRobert Winkler This is useful for forcing the ROM's usb downloader to 3035 a11f1873SRobert Winkler activate upon a watchdog reset which is nice when iterating 3036 a11f1873SRobert Winkler on U-Boot. Using the reset button or running bmode normal 3037 a11f1873SRobert Winkler will set it back to normal. This command currently 3038 a11f1873SRobert Winkler supports i.MX53 and i.MX6. 3039 a11f1873SRobert Winkler 3040 19c402afSSimon Glass- Signing support: 3041 19c402afSSimon Glass CONFIG_RSA 3042 19c402afSSimon Glass 3043 19c402afSSimon Glass This enables the RSA algorithm used for FIT image verification 3044 8bf2aad7SDetlev Zundel in U-Boot. See doc/uImage.FIT/signature.txt for more information. 3045 19c402afSSimon Glass 3046 19c402afSSimon Glass The signing part is build into mkimage regardless of this 3047 19c402afSSimon Glass option. 3048 19c402afSSimon Glass 3049 9e50c406SHeiko Schocher- bootcount support: 3050 9e50c406SHeiko Schocher CONFIG_BOOTCOUNT_LIMIT 3051 9e50c406SHeiko Schocher 3052 9e50c406SHeiko Schocher This enables the bootcounter support, see: 3053 9e50c406SHeiko Schocher http://www.denx.de/wiki/DULG/UBootBootCountLimit 3054 9e50c406SHeiko Schocher 3055 9e50c406SHeiko Schocher CONFIG_AT91SAM9XE 3056 9e50c406SHeiko Schocher enable special bootcounter support on at91sam9xe based boards. 3057 9e50c406SHeiko Schocher CONFIG_BLACKFIN 3058 9e50c406SHeiko Schocher enable special bootcounter support on blackfin based boards. 3059 9e50c406SHeiko Schocher CONFIG_SOC_DA8XX 3060 9e50c406SHeiko Schocher enable special bootcounter support on da850 based boards. 3061 9e50c406SHeiko Schocher CONFIG_BOOTCOUNT_RAM 3062 9e50c406SHeiko Schocher enable support for the bootcounter in RAM 3063 9e50c406SHeiko Schocher CONFIG_BOOTCOUNT_I2C 3064 9e50c406SHeiko Schocher enable support for the bootcounter on an i2c (like RTC) device. 3065 9e50c406SHeiko Schocher CONFIG_SYS_I2C_RTC_ADDR = i2c chip address 3066 9e50c406SHeiko Schocher CONFIG_SYS_BOOTCOUNT_ADDR = i2c addr which is used for 3067 9e50c406SHeiko Schocher the bootcounter. 3068 9e50c406SHeiko Schocher CONFIG_BOOTCOUNT_ALEN = address len 3069 19c402afSSimon Glass 3070 a8c7c708Swdenk- Show boot progress: 3071 c609719bSwdenk CONFIG_SHOW_BOOT_PROGRESS 3072 c609719bSwdenk 3073 c609719bSwdenk Defining this option allows to add some board- 3074 c609719bSwdenk specific code (calling a user-provided function 3075 c609719bSwdenk "show_boot_progress(int)") that enables you to show 3076 c609719bSwdenk the system's boot progress on some display (for 3077 c609719bSwdenk example, some LED's) on your board. At the moment, 3078 c609719bSwdenk the following checkpoints are implemented: 3079 c609719bSwdenk 3080 3a608ca0SSimon Glass- Detailed boot stage timing 3081 3a608ca0SSimon Glass CONFIG_BOOTSTAGE 3082 3a608ca0SSimon Glass Define this option to get detailed timing of each stage 3083 3a608ca0SSimon Glass of the boot process. 3084 3a608ca0SSimon Glass 3085 3a608ca0SSimon Glass CONFIG_BOOTSTAGE_USER_COUNT 3086 3a608ca0SSimon Glass This is the number of available user bootstage records. 3087 3a608ca0SSimon Glass Each time you call bootstage_mark(BOOTSTAGE_ID_ALLOC, ...) 3088 3a608ca0SSimon Glass a new ID will be allocated from this stash. If you exceed 3089 3a608ca0SSimon Glass the limit, recording will stop. 3090 3a608ca0SSimon Glass 3091 3a608ca0SSimon Glass CONFIG_BOOTSTAGE_REPORT 3092 3a608ca0SSimon Glass Define this to print a report before boot, similar to this: 3093 3a608ca0SSimon Glass 3094 3a608ca0SSimon Glass Timer summary in microseconds: 3095 3a608ca0SSimon Glass Mark Elapsed Stage 3096 3a608ca0SSimon Glass 0 0 reset 3097 3a608ca0SSimon Glass 3,575,678 3,575,678 board_init_f start 3098 3a608ca0SSimon Glass 3,575,695 17 arch_cpu_init A9 3099 3a608ca0SSimon Glass 3,575,777 82 arch_cpu_init done 3100 3a608ca0SSimon Glass 3,659,598 83,821 board_init_r start 3101 3a608ca0SSimon Glass 3,910,375 250,777 main_loop 3102 3a608ca0SSimon Glass 29,916,167 26,005,792 bootm_start 3103 3a608ca0SSimon Glass 30,361,327 445,160 start_kernel 3104 3a608ca0SSimon Glass 3105 2eba38cfSSimon Glass CONFIG_CMD_BOOTSTAGE 3106 2eba38cfSSimon Glass Add a 'bootstage' command which supports printing a report 3107 2eba38cfSSimon Glass and un/stashing of bootstage data. 3108 2eba38cfSSimon Glass 3109 94fd1316SSimon Glass CONFIG_BOOTSTAGE_FDT 3110 94fd1316SSimon Glass Stash the bootstage information in the FDT. A root 'bootstage' 3111 94fd1316SSimon Glass node is created with each bootstage id as a child. Each child 3112 94fd1316SSimon Glass has a 'name' property and either 'mark' containing the 3113 94fd1316SSimon Glass mark time in microsecond, or 'accum' containing the 3114 94fd1316SSimon Glass accumulated time for that bootstage id in microseconds. 3115 94fd1316SSimon Glass For example: 3116 94fd1316SSimon Glass 3117 94fd1316SSimon Glass bootstage { 3118 94fd1316SSimon Glass 154 { 3119 94fd1316SSimon Glass name = "board_init_f"; 3120 94fd1316SSimon Glass mark = <3575678>; 3121 94fd1316SSimon Glass }; 3122 94fd1316SSimon Glass 170 { 3123 94fd1316SSimon Glass name = "lcd"; 3124 94fd1316SSimon Glass accum = <33482>; 3125 94fd1316SSimon Glass }; 3126 94fd1316SSimon Glass }; 3127 94fd1316SSimon Glass 3128 94fd1316SSimon Glass Code in the Linux kernel can find this in /proc/devicetree. 3129 94fd1316SSimon Glass 3130 1372cce2SMarian BalakowiczLegacy uImage format: 3131 1372cce2SMarian Balakowicz 3132 c609719bSwdenk Arg Where When 3133 c609719bSwdenk 1 common/cmd_bootm.c before attempting to boot an image 3134 c609719bSwdenk -1 common/cmd_bootm.c Image header has bad magic number 3135 c609719bSwdenk 2 common/cmd_bootm.c Image header has correct magic number 3136 c609719bSwdenk -2 common/cmd_bootm.c Image header has bad checksum 3137 c609719bSwdenk 3 common/cmd_bootm.c Image header has correct checksum 3138 c609719bSwdenk -3 common/cmd_bootm.c Image data has bad checksum 3139 c609719bSwdenk 4 common/cmd_bootm.c Image data has correct checksum 3140 c609719bSwdenk -4 common/cmd_bootm.c Image is for unsupported architecture 3141 c609719bSwdenk 5 common/cmd_bootm.c Architecture check OK 3142 1372cce2SMarian Balakowicz -5 common/cmd_bootm.c Wrong Image Type (not kernel, multi) 3143 c609719bSwdenk 6 common/cmd_bootm.c Image Type check OK 3144 c609719bSwdenk -6 common/cmd_bootm.c gunzip uncompression error 3145 c609719bSwdenk -7 common/cmd_bootm.c Unimplemented compression type 3146 c609719bSwdenk 7 common/cmd_bootm.c Uncompression OK 3147 1372cce2SMarian Balakowicz 8 common/cmd_bootm.c No uncompress/copy overwrite error 3148 c609719bSwdenk -9 common/cmd_bootm.c Unsupported OS (not Linux, BSD, VxWorks, QNX) 3149 1372cce2SMarian Balakowicz 3150 1372cce2SMarian Balakowicz 9 common/image.c Start initial ramdisk verification 3151 1372cce2SMarian Balakowicz -10 common/image.c Ramdisk header has bad magic number 3152 1372cce2SMarian Balakowicz -11 common/image.c Ramdisk header has bad checksum 3153 1372cce2SMarian Balakowicz 10 common/image.c Ramdisk header is OK 3154 1372cce2SMarian Balakowicz -12 common/image.c Ramdisk data has bad checksum 3155 1372cce2SMarian Balakowicz 11 common/image.c Ramdisk data has correct checksum 3156 1372cce2SMarian Balakowicz 12 common/image.c Ramdisk verification complete, start loading 3157 11ccc33fSMarcel Ziswiler -13 common/image.c Wrong Image Type (not PPC Linux ramdisk) 3158 1372cce2SMarian Balakowicz 13 common/image.c Start multifile image verification 3159 1372cce2SMarian Balakowicz 14 common/image.c No initial ramdisk, no multifile, continue. 3160 1372cce2SMarian Balakowicz 3161 ea0364f1SPeter Tyser 15 arch/<arch>/lib/bootm.c All preparation done, transferring control to OS 3162 c609719bSwdenk 3163 a47a12beSStefan Roese -30 arch/powerpc/lib/board.c Fatal error, hang the system 3164 63e73c9aSwdenk -31 post/post.c POST test failed, detected by post_output_backlog() 3165 63e73c9aSwdenk -32 post/post.c POST test failed, detected by post_run_single() 3166 63e73c9aSwdenk 3167 566a494fSHeiko Schocher 34 common/cmd_doc.c before loading a Image from a DOC device 3168 566a494fSHeiko Schocher -35 common/cmd_doc.c Bad usage of "doc" command 3169 566a494fSHeiko Schocher 35 common/cmd_doc.c correct usage of "doc" command 3170 566a494fSHeiko Schocher -36 common/cmd_doc.c No boot device 3171 566a494fSHeiko Schocher 36 common/cmd_doc.c correct boot device 3172 566a494fSHeiko Schocher -37 common/cmd_doc.c Unknown Chip ID on boot device 3173 566a494fSHeiko Schocher 37 common/cmd_doc.c correct chip ID found, device available 3174 566a494fSHeiko Schocher -38 common/cmd_doc.c Read Error on boot device 3175 566a494fSHeiko Schocher 38 common/cmd_doc.c reading Image header from DOC device OK 3176 566a494fSHeiko Schocher -39 common/cmd_doc.c Image header has bad magic number 3177 566a494fSHeiko Schocher 39 common/cmd_doc.c Image header has correct magic number 3178 566a494fSHeiko Schocher -40 common/cmd_doc.c Error reading Image from DOC device 3179 566a494fSHeiko Schocher 40 common/cmd_doc.c Image header has correct magic number 3180 566a494fSHeiko Schocher 41 common/cmd_ide.c before loading a Image from a IDE device 3181 566a494fSHeiko Schocher -42 common/cmd_ide.c Bad usage of "ide" command 3182 566a494fSHeiko Schocher 42 common/cmd_ide.c correct usage of "ide" command 3183 566a494fSHeiko Schocher -43 common/cmd_ide.c No boot device 3184 566a494fSHeiko Schocher 43 common/cmd_ide.c boot device found 3185 566a494fSHeiko Schocher -44 common/cmd_ide.c Device not available 3186 566a494fSHeiko Schocher 44 common/cmd_ide.c Device available 3187 566a494fSHeiko Schocher -45 common/cmd_ide.c wrong partition selected 3188 566a494fSHeiko Schocher 45 common/cmd_ide.c partition selected 3189 566a494fSHeiko Schocher -46 common/cmd_ide.c Unknown partition table 3190 566a494fSHeiko Schocher 46 common/cmd_ide.c valid partition table found 3191 566a494fSHeiko Schocher -47 common/cmd_ide.c Invalid partition type 3192 566a494fSHeiko Schocher 47 common/cmd_ide.c correct partition type 3193 566a494fSHeiko Schocher -48 common/cmd_ide.c Error reading Image Header on boot device 3194 566a494fSHeiko Schocher 48 common/cmd_ide.c reading Image Header from IDE device OK 3195 566a494fSHeiko Schocher -49 common/cmd_ide.c Image header has bad magic number 3196 566a494fSHeiko Schocher 49 common/cmd_ide.c Image header has correct magic number 3197 566a494fSHeiko Schocher -50 common/cmd_ide.c Image header has bad checksum 3198 566a494fSHeiko Schocher 50 common/cmd_ide.c Image header has correct checksum 3199 566a494fSHeiko Schocher -51 common/cmd_ide.c Error reading Image from IDE device 3200 566a494fSHeiko Schocher 51 common/cmd_ide.c reading Image from IDE device OK 3201 566a494fSHeiko Schocher 52 common/cmd_nand.c before loading a Image from a NAND device 3202 566a494fSHeiko Schocher -53 common/cmd_nand.c Bad usage of "nand" command 3203 566a494fSHeiko Schocher 53 common/cmd_nand.c correct usage of "nand" command 3204 566a494fSHeiko Schocher -54 common/cmd_nand.c No boot device 3205 566a494fSHeiko Schocher 54 common/cmd_nand.c boot device found 3206 566a494fSHeiko Schocher -55 common/cmd_nand.c Unknown Chip ID on boot device 3207 566a494fSHeiko Schocher 55 common/cmd_nand.c correct chip ID found, device available 3208 566a494fSHeiko Schocher -56 common/cmd_nand.c Error reading Image Header on boot device 3209 566a494fSHeiko Schocher 56 common/cmd_nand.c reading Image Header from NAND device OK 3210 566a494fSHeiko Schocher -57 common/cmd_nand.c Image header has bad magic number 3211 566a494fSHeiko Schocher 57 common/cmd_nand.c Image header has correct magic number 3212 566a494fSHeiko Schocher -58 common/cmd_nand.c Error reading Image from NAND device 3213 566a494fSHeiko Schocher 58 common/cmd_nand.c reading Image from NAND device OK 3214 c609719bSwdenk 3215 566a494fSHeiko Schocher -60 common/env_common.c Environment has a bad CRC, using default 3216 c609719bSwdenk 3217 566a494fSHeiko Schocher 64 net/eth.c starting with Ethernet configuration. 3218 566a494fSHeiko Schocher -64 net/eth.c no Ethernet found. 3219 566a494fSHeiko Schocher 65 net/eth.c Ethernet found. 3220 206c60cbSwdenk 3221 566a494fSHeiko Schocher -80 common/cmd_net.c usage wrong 3222 566a494fSHeiko Schocher 80 common/cmd_net.c before calling NetLoop() 3223 11ccc33fSMarcel Ziswiler -81 common/cmd_net.c some error in NetLoop() occurred 3224 566a494fSHeiko Schocher 81 common/cmd_net.c NetLoop() back without error 3225 566a494fSHeiko Schocher -82 common/cmd_net.c size == 0 (File with size 0 loaded) 3226 566a494fSHeiko Schocher 82 common/cmd_net.c trying automatic boot 3227 74de7aefSWolfgang Denk 83 common/cmd_net.c running "source" command 3228 74de7aefSWolfgang Denk -83 common/cmd_net.c some error in automatic boot or "source" command 3229 566a494fSHeiko Schocher 84 common/cmd_net.c end without errors 3230 c609719bSwdenk 3231 1372cce2SMarian BalakowiczFIT uImage format: 3232 1372cce2SMarian Balakowicz 3233 1372cce2SMarian Balakowicz Arg Where When 3234 1372cce2SMarian Balakowicz 100 common/cmd_bootm.c Kernel FIT Image has correct format 3235 1372cce2SMarian Balakowicz -100 common/cmd_bootm.c Kernel FIT Image has incorrect format 3236 1372cce2SMarian Balakowicz 101 common/cmd_bootm.c No Kernel subimage unit name, using configuration 3237 1372cce2SMarian Balakowicz -101 common/cmd_bootm.c Can't get configuration for kernel subimage 3238 1372cce2SMarian Balakowicz 102 common/cmd_bootm.c Kernel unit name specified 3239 1372cce2SMarian Balakowicz -103 common/cmd_bootm.c Can't get kernel subimage node offset 3240 f773bea8SMarian Balakowicz 103 common/cmd_bootm.c Found configuration node 3241 1372cce2SMarian Balakowicz 104 common/cmd_bootm.c Got kernel subimage node offset 3242 1372cce2SMarian Balakowicz -104 common/cmd_bootm.c Kernel subimage hash verification failed 3243 1372cce2SMarian Balakowicz 105 common/cmd_bootm.c Kernel subimage hash verification OK 3244 1372cce2SMarian Balakowicz -105 common/cmd_bootm.c Kernel subimage is for unsupported architecture 3245 1372cce2SMarian Balakowicz 106 common/cmd_bootm.c Architecture check OK 3246 11ccc33fSMarcel Ziswiler -106 common/cmd_bootm.c Kernel subimage has wrong type 3247 11ccc33fSMarcel Ziswiler 107 common/cmd_bootm.c Kernel subimage type OK 3248 1372cce2SMarian Balakowicz -107 common/cmd_bootm.c Can't get kernel subimage data/size 3249 1372cce2SMarian Balakowicz 108 common/cmd_bootm.c Got kernel subimage data/size 3250 1372cce2SMarian Balakowicz -108 common/cmd_bootm.c Wrong image type (not legacy, FIT) 3251 1372cce2SMarian Balakowicz -109 common/cmd_bootm.c Can't get kernel subimage type 3252 1372cce2SMarian Balakowicz -110 common/cmd_bootm.c Can't get kernel subimage comp 3253 1372cce2SMarian Balakowicz -111 common/cmd_bootm.c Can't get kernel subimage os 3254 1372cce2SMarian Balakowicz -112 common/cmd_bootm.c Can't get kernel subimage load address 3255 1372cce2SMarian Balakowicz -113 common/cmd_bootm.c Image uncompress/copy overwrite error 3256 1372cce2SMarian Balakowicz 3257 1372cce2SMarian Balakowicz 120 common/image.c Start initial ramdisk verification 3258 1372cce2SMarian Balakowicz -120 common/image.c Ramdisk FIT image has incorrect format 3259 1372cce2SMarian Balakowicz 121 common/image.c Ramdisk FIT image has correct format 3260 11ccc33fSMarcel Ziswiler 122 common/image.c No ramdisk subimage unit name, using configuration 3261 1372cce2SMarian Balakowicz -122 common/image.c Can't get configuration for ramdisk subimage 3262 1372cce2SMarian Balakowicz 123 common/image.c Ramdisk unit name specified 3263 1372cce2SMarian Balakowicz -124 common/image.c Can't get ramdisk subimage node offset 3264 1372cce2SMarian Balakowicz 125 common/image.c Got ramdisk subimage node offset 3265 1372cce2SMarian Balakowicz -125 common/image.c Ramdisk subimage hash verification failed 3266 1372cce2SMarian Balakowicz 126 common/image.c Ramdisk subimage hash verification OK 3267 1372cce2SMarian Balakowicz -126 common/image.c Ramdisk subimage for unsupported architecture 3268 1372cce2SMarian Balakowicz 127 common/image.c Architecture check OK 3269 1372cce2SMarian Balakowicz -127 common/image.c Can't get ramdisk subimage data/size 3270 1372cce2SMarian Balakowicz 128 common/image.c Got ramdisk subimage data/size 3271 1372cce2SMarian Balakowicz 129 common/image.c Can't get ramdisk load address 3272 1372cce2SMarian Balakowicz -129 common/image.c Got ramdisk load address 3273 1372cce2SMarian Balakowicz 3274 11ccc33fSMarcel Ziswiler -130 common/cmd_doc.c Incorrect FIT image format 3275 1372cce2SMarian Balakowicz 131 common/cmd_doc.c FIT image format OK 3276 1372cce2SMarian Balakowicz 3277 11ccc33fSMarcel Ziswiler -140 common/cmd_ide.c Incorrect FIT image format 3278 1372cce2SMarian Balakowicz 141 common/cmd_ide.c FIT image format OK 3279 1372cce2SMarian Balakowicz 3280 11ccc33fSMarcel Ziswiler -150 common/cmd_nand.c Incorrect FIT image format 3281 1372cce2SMarian Balakowicz 151 common/cmd_nand.c FIT image format OK 3282 1372cce2SMarian Balakowicz 3283 21d29f7fSHeiko Schocher- legacy image format: 3284 21d29f7fSHeiko Schocher CONFIG_IMAGE_FORMAT_LEGACY 3285 21d29f7fSHeiko Schocher enables the legacy image format support in U-Boot. 3286 21d29f7fSHeiko Schocher 3287 21d29f7fSHeiko Schocher Default: 3288 21d29f7fSHeiko Schocher enabled if CONFIG_FIT_SIGNATURE is not defined. 3289 21d29f7fSHeiko Schocher 3290 21d29f7fSHeiko Schocher CONFIG_DISABLE_IMAGE_LEGACY 3291 21d29f7fSHeiko Schocher disable the legacy image format 3292 21d29f7fSHeiko Schocher 3293 21d29f7fSHeiko Schocher This define is introduced, as the legacy image format is 3294 21d29f7fSHeiko Schocher enabled per default for backward compatibility. 3295 21d29f7fSHeiko Schocher 3296 d95f6ec7SGabe Black- FIT image support: 3297 d95f6ec7SGabe Black CONFIG_FIT 3298 d95f6ec7SGabe Black Enable support for the FIT uImage format. 3299 d95f6ec7SGabe Black 3300 d95f6ec7SGabe Black CONFIG_FIT_BEST_MATCH 3301 d95f6ec7SGabe Black When no configuration is explicitly selected, default to the 3302 d95f6ec7SGabe Black one whose fdt's compatibility field best matches that of 3303 d95f6ec7SGabe Black U-Boot itself. A match is considered "best" if it matches the 3304 d95f6ec7SGabe Black most specific compatibility entry of U-Boot's fdt's root node. 3305 d95f6ec7SGabe Black The order of entries in the configuration's fdt is ignored. 3306 d95f6ec7SGabe Black 3307 3e569a6bSSimon Glass CONFIG_FIT_SIGNATURE 3308 3e569a6bSSimon Glass This option enables signature verification of FIT uImages, 3309 3e569a6bSSimon Glass using a hash signed and verified using RSA. See 3310 3e569a6bSSimon Glass doc/uImage.FIT/signature.txt for more details. 3311 3e569a6bSSimon Glass 3312 21d29f7fSHeiko Schocher WARNING: When relying on signed FIT images with required 3313 21d29f7fSHeiko Schocher signature check the legacy image format is default 3314 21d29f7fSHeiko Schocher disabled. If a board need legacy image format support 3315 21d29f7fSHeiko Schocher enable this through CONFIG_IMAGE_FORMAT_LEGACY 3316 21d29f7fSHeiko Schocher 3317 9a4f479bSDirk Eibach CONFIG_FIT_DISABLE_SHA256 3318 9a4f479bSDirk Eibach Supporting SHA256 hashes has quite an impact on binary size. 3319 9a4f479bSDirk Eibach For constrained systems sha256 hash support can be disabled 3320 9a4f479bSDirk Eibach with this option. 3321 9a4f479bSDirk Eibach 3322 4cf2609bSWolfgang Denk- Standalone program support: 3323 4cf2609bSWolfgang Denk CONFIG_STANDALONE_LOAD_ADDR 3324 4cf2609bSWolfgang Denk 3325 6feff899SWolfgang Denk This option defines a board specific value for the 3326 6feff899SWolfgang Denk address where standalone program gets loaded, thus 3327 6feff899SWolfgang Denk overwriting the architecture dependent default 3328 4cf2609bSWolfgang Denk settings. 3329 4cf2609bSWolfgang Denk 3330 4cf2609bSWolfgang Denk- Frame Buffer Address: 3331 4cf2609bSWolfgang Denk CONFIG_FB_ADDR 3332 4cf2609bSWolfgang Denk 3333 4cf2609bSWolfgang Denk Define CONFIG_FB_ADDR if you want to use specific 3334 44a53b57SWolfgang Denk address for frame buffer. This is typically the case 3335 44a53b57SWolfgang Denk when using a graphics controller has separate video 3336 44a53b57SWolfgang Denk memory. U-Boot will then place the frame buffer at 3337 44a53b57SWolfgang Denk the given address instead of dynamically reserving it 3338 44a53b57SWolfgang Denk in system RAM by calling lcd_setmem(), which grabs 3339 44a53b57SWolfgang Denk the memory for the frame buffer depending on the 3340 44a53b57SWolfgang Denk configured panel size. 3341 4cf2609bSWolfgang Denk 3342 4cf2609bSWolfgang Denk Please see board_init_f function. 3343 4cf2609bSWolfgang Denk 3344 cccfc2abSDetlev Zundel- Automatic software updates via TFTP server 3345 cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP 3346 cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP_CNT_MAX 3347 cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP_MSEC_MAX 3348 cccfc2abSDetlev Zundel 3349 cccfc2abSDetlev Zundel These options enable and control the auto-update feature; 3350 cccfc2abSDetlev Zundel for a more detailed description refer to doc/README.update. 3351 cccfc2abSDetlev Zundel 3352 cccfc2abSDetlev Zundel- MTD Support (mtdparts command, UBI support) 3353 cccfc2abSDetlev Zundel CONFIG_MTD_DEVICE 3354 cccfc2abSDetlev Zundel 3355 cccfc2abSDetlev Zundel Adds the MTD device infrastructure from the Linux kernel. 3356 cccfc2abSDetlev Zundel Needed for mtdparts command support. 3357 cccfc2abSDetlev Zundel 3358 cccfc2abSDetlev Zundel CONFIG_MTD_PARTITIONS 3359 cccfc2abSDetlev Zundel 3360 cccfc2abSDetlev Zundel Adds the MTD partitioning infrastructure from the Linux 3361 cccfc2abSDetlev Zundel kernel. Needed for UBI support. 3362 cccfc2abSDetlev Zundel 3363 ff94bc40SHeiko Schocher CONFIG_MTD_NAND_VERIFY_WRITE 3364 ff94bc40SHeiko Schocher verify if the written data is correct reread. 3365 ff94bc40SHeiko Schocher 3366 70c219cdSJoe Hershberger- UBI support 3367 70c219cdSJoe Hershberger CONFIG_CMD_UBI 3368 70c219cdSJoe Hershberger 3369 70c219cdSJoe Hershberger Adds commands for interacting with MTD partitions formatted 3370 70c219cdSJoe Hershberger with the UBI flash translation layer 3371 70c219cdSJoe Hershberger 3372 70c219cdSJoe Hershberger Requires also defining CONFIG_RBTREE 3373 70c219cdSJoe Hershberger 3374 147162daSJoe Hershberger CONFIG_UBI_SILENCE_MSG 3375 147162daSJoe Hershberger 3376 147162daSJoe Hershberger Make the verbose messages from UBI stop printing. This leaves 3377 147162daSJoe Hershberger warnings and errors enabled. 3378 147162daSJoe Hershberger 3379 ff94bc40SHeiko Schocher 3380 ff94bc40SHeiko Schocher CONFIG_MTD_UBI_WL_THRESHOLD 3381 ff94bc40SHeiko Schocher This parameter defines the maximum difference between the highest 3382 ff94bc40SHeiko Schocher erase counter value and the lowest erase counter value of eraseblocks 3383 ff94bc40SHeiko Schocher of UBI devices. When this threshold is exceeded, UBI starts performing 3384 ff94bc40SHeiko Schocher wear leveling by means of moving data from eraseblock with low erase 3385 ff94bc40SHeiko Schocher counter to eraseblocks with high erase counter. 3386 ff94bc40SHeiko Schocher 3387 ff94bc40SHeiko Schocher The default value should be OK for SLC NAND flashes, NOR flashes and 3388 ff94bc40SHeiko Schocher other flashes which have eraseblock life-cycle 100000 or more. 3389 ff94bc40SHeiko Schocher However, in case of MLC NAND flashes which typically have eraseblock 3390 ff94bc40SHeiko Schocher life-cycle less than 10000, the threshold should be lessened (e.g., 3391 ff94bc40SHeiko Schocher to 128 or 256, although it does not have to be power of 2). 3392 ff94bc40SHeiko Schocher 3393 ff94bc40SHeiko Schocher default: 4096 3394 ff94bc40SHeiko Schocher 3395 ff94bc40SHeiko Schocher CONFIG_MTD_UBI_BEB_LIMIT 3396 ff94bc40SHeiko Schocher This option specifies the maximum bad physical eraseblocks UBI 3397 ff94bc40SHeiko Schocher expects on the MTD device (per 1024 eraseblocks). If the 3398 ff94bc40SHeiko Schocher underlying flash does not admit of bad eraseblocks (e.g. NOR 3399 ff94bc40SHeiko Schocher flash), this value is ignored. 3400 ff94bc40SHeiko Schocher 3401 ff94bc40SHeiko Schocher NAND datasheets often specify the minimum and maximum NVM 3402 ff94bc40SHeiko Schocher (Number of Valid Blocks) for the flashes' endurance lifetime. 3403 ff94bc40SHeiko Schocher The maximum expected bad eraseblocks per 1024 eraseblocks 3404 ff94bc40SHeiko Schocher then can be calculated as "1024 * (1 - MinNVB / MaxNVB)", 3405 ff94bc40SHeiko Schocher which gives 20 for most NANDs (MaxNVB is basically the total 3406 ff94bc40SHeiko Schocher count of eraseblocks on the chip). 3407 ff94bc40SHeiko Schocher 3408 ff94bc40SHeiko Schocher To put it differently, if this value is 20, UBI will try to 3409 ff94bc40SHeiko Schocher reserve about 1.9% of physical eraseblocks for bad blocks 3410 ff94bc40SHeiko Schocher handling. And that will be 1.9% of eraseblocks on the entire 3411 ff94bc40SHeiko Schocher NAND chip, not just the MTD partition UBI attaches. This means 3412 ff94bc40SHeiko Schocher that if you have, say, a NAND flash chip admits maximum 40 bad 3413 ff94bc40SHeiko Schocher eraseblocks, and it is split on two MTD partitions of the same 3414 ff94bc40SHeiko Schocher size, UBI will reserve 40 eraseblocks when attaching a 3415 ff94bc40SHeiko Schocher partition. 3416 ff94bc40SHeiko Schocher 3417 ff94bc40SHeiko Schocher default: 20 3418 ff94bc40SHeiko Schocher 3419 ff94bc40SHeiko Schocher CONFIG_MTD_UBI_FASTMAP 3420 ff94bc40SHeiko Schocher Fastmap is a mechanism which allows attaching an UBI device 3421 ff94bc40SHeiko Schocher in nearly constant time. Instead of scanning the whole MTD device it 3422 ff94bc40SHeiko Schocher only has to locate a checkpoint (called fastmap) on the device. 3423 ff94bc40SHeiko Schocher The on-flash fastmap contains all information needed to attach 3424 ff94bc40SHeiko Schocher the device. Using fastmap makes only sense on large devices where 3425 ff94bc40SHeiko Schocher attaching by scanning takes long. UBI will not automatically install 3426 ff94bc40SHeiko Schocher a fastmap on old images, but you can set the UBI parameter 3427 ff94bc40SHeiko Schocher CONFIG_MTD_UBI_FASTMAP_AUTOCONVERT to 1 if you want so. Please note 3428 ff94bc40SHeiko Schocher that fastmap-enabled images are still usable with UBI implementations 3429 ff94bc40SHeiko Schocher without fastmap support. On typical flash devices the whole fastmap 3430 ff94bc40SHeiko Schocher fits into one PEB. UBI will reserve PEBs to hold two fastmaps. 3431 ff94bc40SHeiko Schocher 3432 ff94bc40SHeiko Schocher CONFIG_MTD_UBI_FASTMAP_AUTOCONVERT 3433 ff94bc40SHeiko Schocher Set this parameter to enable fastmap automatically on images 3434 ff94bc40SHeiko Schocher without a fastmap. 3435 ff94bc40SHeiko Schocher default: 0 3436 ff94bc40SHeiko Schocher 3437 70c219cdSJoe Hershberger- UBIFS support 3438 70c219cdSJoe Hershberger CONFIG_CMD_UBIFS 3439 70c219cdSJoe Hershberger 3440 70c219cdSJoe Hershberger Adds commands for interacting with UBI volumes formatted as 3441 70c219cdSJoe Hershberger UBIFS. UBIFS is read-only in u-boot. 3442 70c219cdSJoe Hershberger 3443 70c219cdSJoe Hershberger Requires UBI support as well as CONFIG_LZO 3444 70c219cdSJoe Hershberger 3445 147162daSJoe Hershberger CONFIG_UBIFS_SILENCE_MSG 3446 147162daSJoe Hershberger 3447 147162daSJoe Hershberger Make the verbose messages from UBIFS stop printing. This leaves 3448 147162daSJoe Hershberger warnings and errors enabled. 3449 147162daSJoe Hershberger 3450 6a11cf48SDaniel Schwierzeck- SPL framework 3451 6a11cf48SDaniel Schwierzeck CONFIG_SPL 3452 6a11cf48SDaniel Schwierzeck Enable building of SPL globally. 3453 6a11cf48SDaniel Schwierzeck 3454 95579793STom Rini CONFIG_SPL_LDSCRIPT 3455 95579793STom Rini LDSCRIPT for linking the SPL binary. 3456 95579793STom Rini 3457 6ebc3461SAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT 3458 6ebc3461SAlbert ARIBAUD Maximum size in memory allocated to the SPL, BSS included. 3459 6ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual memory 3460 6ebc3461SAlbert ARIBAUD used by SPL from _start to __bss_end does not exceed it. 3461 8960af8bSAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE 3462 6ebc3461SAlbert ARIBAUD must not be both defined at the same time. 3463 6ebc3461SAlbert ARIBAUD 3464 95579793STom Rini CONFIG_SPL_MAX_SIZE 3465 6ebc3461SAlbert ARIBAUD Maximum size of the SPL image (text, data, rodata, and 3466 6ebc3461SAlbert ARIBAUD linker lists sections), BSS excluded. 3467 6ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual size does 3468 6ebc3461SAlbert ARIBAUD not exceed it. 3469 95579793STom Rini 3470 6a11cf48SDaniel Schwierzeck CONFIG_SPL_TEXT_BASE 3471 6a11cf48SDaniel Schwierzeck TEXT_BASE for linking the SPL binary. 3472 6a11cf48SDaniel Schwierzeck 3473 94a45bb1SScott Wood CONFIG_SPL_RELOC_TEXT_BASE 3474 94a45bb1SScott Wood Address to relocate to. If unspecified, this is equal to 3475 94a45bb1SScott Wood CONFIG_SPL_TEXT_BASE (i.e. no relocation is done). 3476 94a45bb1SScott Wood 3477 95579793STom Rini CONFIG_SPL_BSS_START_ADDR 3478 95579793STom Rini Link address for the BSS within the SPL binary. 3479 95579793STom Rini 3480 95579793STom Rini CONFIG_SPL_BSS_MAX_SIZE 3481 6ebc3461SAlbert ARIBAUD Maximum size in memory allocated to the SPL BSS. 3482 6ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual memory used 3483 6ebc3461SAlbert ARIBAUD by SPL from __bss_start to __bss_end does not exceed it. 3484 8960af8bSAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE 3485 6ebc3461SAlbert ARIBAUD must not be both defined at the same time. 3486 95579793STom Rini 3487 95579793STom Rini CONFIG_SPL_STACK 3488 95579793STom Rini Adress of the start of the stack SPL will use 3489 95579793STom Rini 3490 94a45bb1SScott Wood CONFIG_SPL_RELOC_STACK 3491 94a45bb1SScott Wood Adress of the start of the stack SPL will use after 3492 94a45bb1SScott Wood relocation. If unspecified, this is equal to 3493 94a45bb1SScott Wood CONFIG_SPL_STACK. 3494 94a45bb1SScott Wood 3495 95579793STom Rini CONFIG_SYS_SPL_MALLOC_START 3496 95579793STom Rini Starting address of the malloc pool used in SPL. 3497 95579793STom Rini 3498 95579793STom Rini CONFIG_SYS_SPL_MALLOC_SIZE 3499 95579793STom Rini The size of the malloc pool used in SPL. 3500 6a11cf48SDaniel Schwierzeck 3501 47f7bcaeSTom Rini CONFIG_SPL_FRAMEWORK 3502 47f7bcaeSTom Rini Enable the SPL framework under common/. This framework 3503 47f7bcaeSTom Rini supports MMC, NAND and YMODEM loading of U-Boot and NAND 3504 47f7bcaeSTom Rini NAND loading of the Linux Kernel. 3505 47f7bcaeSTom Rini 3506 9607faf2STom Rini CONFIG_SPL_OS_BOOT 3507 9607faf2STom Rini Enable booting directly to an OS from SPL. 3508 9607faf2STom Rini See also: doc/README.falcon 3509 9607faf2STom Rini 3510 861a86f4STom Rini CONFIG_SPL_DISPLAY_PRINT 3511 861a86f4STom Rini For ARM, enable an optional function to print more information 3512 861a86f4STom Rini about the running system. 3513 861a86f4STom Rini 3514 4b919725SScott Wood CONFIG_SPL_INIT_MINIMAL 3515 4b919725SScott Wood Arch init code should be built for a very small image 3516 4b919725SScott Wood 3517 6a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBCOMMON_SUPPORT 3518 6a11cf48SDaniel Schwierzeck Support for common/libcommon.o in SPL binary 3519 6a11cf48SDaniel Schwierzeck 3520 6a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBDISK_SUPPORT 3521 6a11cf48SDaniel Schwierzeck Support for disk/libdisk.o in SPL binary 3522 6a11cf48SDaniel Schwierzeck 3523 6a11cf48SDaniel Schwierzeck CONFIG_SPL_I2C_SUPPORT 3524 6a11cf48SDaniel Schwierzeck Support for drivers/i2c/libi2c.o in SPL binary 3525 6a11cf48SDaniel Schwierzeck 3526 6a11cf48SDaniel Schwierzeck CONFIG_SPL_GPIO_SUPPORT 3527 6a11cf48SDaniel Schwierzeck Support for drivers/gpio/libgpio.o in SPL binary 3528 6a11cf48SDaniel Schwierzeck 3529 6a11cf48SDaniel Schwierzeck CONFIG_SPL_MMC_SUPPORT 3530 6a11cf48SDaniel Schwierzeck Support for drivers/mmc/libmmc.o in SPL binary 3531 6a11cf48SDaniel Schwierzeck 3532 95579793STom Rini CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR, 3533 95579793STom Rini CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS, 3534 95579793STom Rini CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION 3535 95579793STom Rini Address, size and partition on the MMC to load U-Boot from 3536 95579793STom Rini when the MMC is being used in raw mode. 3537 95579793STom Rini 3538 2b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 3539 2b75b0adSPeter Korsgaard Sector to load kernel uImage from when MMC is being 3540 2b75b0adSPeter Korsgaard used in raw mode (for Falcon mode) 3541 2b75b0adSPeter Korsgaard 3542 2b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR, 3543 2b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS 3544 2b75b0adSPeter Korsgaard Sector and number of sectors to load kernel argument 3545 2b75b0adSPeter Korsgaard parameters from when MMC is being used in raw mode 3546 2b75b0adSPeter Korsgaard (for falcon mode) 3547 2b75b0adSPeter Korsgaard 3548 95579793STom Rini CONFIG_SPL_FAT_SUPPORT 3549 95579793STom Rini Support for fs/fat/libfat.o in SPL binary 3550 95579793STom Rini 3551 95579793STom Rini CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME 3552 95579793STom Rini Filename to read to load U-Boot when reading from FAT 3553 95579793STom Rini 3554 7ad2cc79SPeter Korsgaard CONFIG_SPL_FAT_LOAD_KERNEL_NAME 3555 7ad2cc79SPeter Korsgaard Filename to read to load kernel uImage when reading 3556 7ad2cc79SPeter Korsgaard from FAT (for Falcon mode) 3557 7ad2cc79SPeter Korsgaard 3558 7ad2cc79SPeter Korsgaard CONFIG_SPL_FAT_LOAD_ARGS_NAME 3559 7ad2cc79SPeter Korsgaard Filename to read to load kernel argument parameters 3560 7ad2cc79SPeter Korsgaard when reading from FAT (for Falcon mode) 3561 7ad2cc79SPeter Korsgaard 3562 06f60ae3SScott Wood CONFIG_SPL_MPC83XX_WAIT_FOR_NAND 3563 06f60ae3SScott Wood Set this for NAND SPL on PPC mpc83xx targets, so that 3564 06f60ae3SScott Wood start.S waits for the rest of the SPL to load before 3565 06f60ae3SScott Wood continuing (the hardware starts execution after just 3566 06f60ae3SScott Wood loading the first page rather than the full 4K). 3567 06f60ae3SScott Wood 3568 651fcf60SPrabhakar Kushwaha CONFIG_SPL_SKIP_RELOCATE 3569 651fcf60SPrabhakar Kushwaha Avoid SPL relocation 3570 651fcf60SPrabhakar Kushwaha 3571 6f2f01b9SScott Wood CONFIG_SPL_NAND_BASE 3572 6f2f01b9SScott Wood Include nand_base.c in the SPL. Requires 3573 6f2f01b9SScott Wood CONFIG_SPL_NAND_DRIVERS. 3574 6f2f01b9SScott Wood 3575 6f2f01b9SScott Wood CONFIG_SPL_NAND_DRIVERS 3576 6f2f01b9SScott Wood SPL uses normal NAND drivers, not minimal drivers. 3577 6f2f01b9SScott Wood 3578 6f2f01b9SScott Wood CONFIG_SPL_NAND_ECC 3579 6f2f01b9SScott Wood Include standard software ECC in the SPL 3580 6f2f01b9SScott Wood 3581 95579793STom Rini CONFIG_SPL_NAND_SIMPLE 3582 7d4b7955SScott Wood Support for NAND boot using simple NAND drivers that 3583 7d4b7955SScott Wood expose the cmd_ctrl() interface. 3584 95579793STom Rini 3585 6dd3b566STom Rini CONFIG_SPL_MTD_SUPPORT 3586 6dd3b566STom Rini Support for the MTD subsystem within SPL. Useful for 3587 6dd3b566STom Rini environment on NAND support within SPL. 3588 6dd3b566STom Rini 3589 bb0dc108SYing Zhang CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT 3590 bb0dc108SYing Zhang Set for the SPL on PPC mpc8xxx targets, support for 3591 5614e71bSYork Sun drivers/ddr/fsl/libddr.o in SPL binary. 3592 bb0dc108SYing Zhang 3593 7c8eea59SYing Zhang CONFIG_SPL_COMMON_INIT_DDR 3594 7c8eea59SYing Zhang Set for common ddr init with serial presence detect in 3595 7c8eea59SYing Zhang SPL binary. 3596 7c8eea59SYing Zhang 3597 95579793STom Rini CONFIG_SYS_NAND_5_ADDR_CYCLE, CONFIG_SYS_NAND_PAGE_COUNT, 3598 95579793STom Rini CONFIG_SYS_NAND_PAGE_SIZE, CONFIG_SYS_NAND_OOBSIZE, 3599 95579793STom Rini CONFIG_SYS_NAND_BLOCK_SIZE, CONFIG_SYS_NAND_BAD_BLOCK_POS, 3600 95579793STom Rini CONFIG_SYS_NAND_ECCPOS, CONFIG_SYS_NAND_ECCSIZE, 3601 95579793STom Rini CONFIG_SYS_NAND_ECCBYTES 3602 95579793STom Rini Defines the size and behavior of the NAND that SPL uses 3603 7d4b7955SScott Wood to read U-Boot 3604 95579793STom Rini 3605 fbe76ae4SPrabhakar Kushwaha CONFIG_SPL_NAND_BOOT 3606 fbe76ae4SPrabhakar Kushwaha Add support NAND boot 3607 fbe76ae4SPrabhakar Kushwaha 3608 95579793STom Rini CONFIG_SYS_NAND_U_BOOT_OFFS 3609 7d4b7955SScott Wood Location in NAND to read U-Boot from 3610 7d4b7955SScott Wood 3611 7d4b7955SScott Wood CONFIG_SYS_NAND_U_BOOT_DST 3612 7d4b7955SScott Wood Location in memory to load U-Boot to 3613 7d4b7955SScott Wood 3614 7d4b7955SScott Wood CONFIG_SYS_NAND_U_BOOT_SIZE 3615 7d4b7955SScott Wood Size of image to load 3616 95579793STom Rini 3617 95579793STom Rini CONFIG_SYS_NAND_U_BOOT_START 3618 7d4b7955SScott Wood Entry point in loaded image to jump to 3619 95579793STom Rini 3620 95579793STom Rini CONFIG_SYS_NAND_HW_ECC_OOBFIRST 3621 95579793STom Rini Define this if you need to first read the OOB and then the 3622 95579793STom Rini data. This is used for example on davinci plattforms. 3623 95579793STom Rini 3624 95579793STom Rini CONFIG_SPL_OMAP3_ID_NAND 3625 95579793STom Rini Support for an OMAP3-specific set of functions to return the 3626 95579793STom Rini ID and MFR of the first attached NAND chip, if present. 3627 95579793STom Rini 3628 6a11cf48SDaniel Schwierzeck CONFIG_SPL_SERIAL_SUPPORT 3629 6a11cf48SDaniel Schwierzeck Support for drivers/serial/libserial.o in SPL binary 3630 6a11cf48SDaniel Schwierzeck 3631 6a11cf48SDaniel Schwierzeck CONFIG_SPL_SPI_FLASH_SUPPORT 3632 6a11cf48SDaniel Schwierzeck Support for drivers/mtd/spi/libspi_flash.o in SPL binary 3633 6a11cf48SDaniel Schwierzeck 3634 6a11cf48SDaniel Schwierzeck CONFIG_SPL_SPI_SUPPORT 3635 6a11cf48SDaniel Schwierzeck Support for drivers/spi/libspi.o in SPL binary 3636 6a11cf48SDaniel Schwierzeck 3637 c57b953dSPavel Machek CONFIG_SPL_RAM_DEVICE 3638 c57b953dSPavel Machek Support for running image already present in ram, in SPL binary 3639 c57b953dSPavel Machek 3640 6a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBGENERIC_SUPPORT 3641 6a11cf48SDaniel Schwierzeck Support for lib/libgeneric.o in SPL binary 3642 1372cce2SMarian Balakowicz 3643 ba1bee43SYing Zhang CONFIG_SPL_ENV_SUPPORT 3644 ba1bee43SYing Zhang Support for the environment operating in SPL binary 3645 ba1bee43SYing Zhang 3646 ba1bee43SYing Zhang CONFIG_SPL_NET_SUPPORT 3647 ba1bee43SYing Zhang Support for the net/libnet.o in SPL binary. 3648 ba1bee43SYing Zhang It conflicts with SPL env from storage medium specified by 3649 ba1bee43SYing Zhang CONFIG_ENV_IS_xxx but CONFIG_ENV_IS_NOWHERE 3650 ba1bee43SYing Zhang 3651 74752baaSScott Wood CONFIG_SPL_PAD_TO 3652 6113d3f2SBenoît Thébaudeau Image offset to which the SPL should be padded before appending 3653 6113d3f2SBenoît Thébaudeau the SPL payload. By default, this is defined as 3654 6113d3f2SBenoît Thébaudeau CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined. 3655 6113d3f2SBenoît Thébaudeau CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL 3656 6113d3f2SBenoît Thébaudeau payload without any padding, or >= CONFIG_SPL_MAX_SIZE. 3657 74752baaSScott Wood 3658 ca2fca22SScott Wood CONFIG_SPL_TARGET 3659 ca2fca22SScott Wood Final target image containing SPL and payload. Some SPLs 3660 ca2fca22SScott Wood use an arch-specific makefile fragment instead, for 3661 ca2fca22SScott Wood example if more than one image needs to be produced. 3662 ca2fca22SScott Wood 3663 87ebee39SSimon Glass CONFIG_FIT_SPL_PRINT 3664 87ebee39SSimon Glass Printing information about a FIT image adds quite a bit of 3665 87ebee39SSimon Glass code to SPL. So this is normally disabled in SPL. Use this 3666 87ebee39SSimon Glass option to re-enable it. This will affect the output of the 3667 87ebee39SSimon Glass bootm command when booting a FIT image. 3668 87ebee39SSimon Glass 3669 3aa29de0SYing Zhang- TPL framework 3670 3aa29de0SYing Zhang CONFIG_TPL 3671 3aa29de0SYing Zhang Enable building of TPL globally. 3672 3aa29de0SYing Zhang 3673 3aa29de0SYing Zhang CONFIG_TPL_PAD_TO 3674 3aa29de0SYing Zhang Image offset to which the TPL should be padded before appending 3675 3aa29de0SYing Zhang the TPL payload. By default, this is defined as 3676 3aa29de0SYing Zhang CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined. 3677 3aa29de0SYing Zhang CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL 3678 3aa29de0SYing Zhang payload without any padding, or >= CONFIG_SPL_MAX_SIZE. 3679 3aa29de0SYing Zhang 3680 c609719bSwdenkModem Support: 3681 c609719bSwdenk-------------- 3682 c609719bSwdenk 3683 566e5cf4SWolfgang Denk[so far only for SMDK2400 boards] 3684 c609719bSwdenk 3685 11ccc33fSMarcel Ziswiler- Modem support enable: 3686 c609719bSwdenk CONFIG_MODEM_SUPPORT 3687 c609719bSwdenk 3688 c609719bSwdenk- RTS/CTS Flow control enable: 3689 c609719bSwdenk CONFIG_HWFLOW 3690 c609719bSwdenk 3691 c609719bSwdenk- Modem debug support: 3692 c609719bSwdenk CONFIG_MODEM_SUPPORT_DEBUG 3693 c609719bSwdenk 3694 c609719bSwdenk Enables debugging stuff (char screen[1024], dbg()) 3695 c609719bSwdenk for modem support. Useful only with BDI2000. 3696 c609719bSwdenk 3697 a8c7c708Swdenk- Interrupt support (PPC): 3698 a8c7c708Swdenk 3699 a8c7c708Swdenk There are common interrupt_init() and timer_interrupt() 3700 a8c7c708Swdenk for all PPC archs. interrupt_init() calls interrupt_init_cpu() 3701 11ccc33fSMarcel Ziswiler for CPU specific initialization. interrupt_init_cpu() 3702 a8c7c708Swdenk should set decrementer_count to appropriate value. If 3703 11ccc33fSMarcel Ziswiler CPU resets decrementer automatically after interrupt 3704 a8c7c708Swdenk (ppc4xx) it should set decrementer_count to zero. 3705 11ccc33fSMarcel Ziswiler timer_interrupt() calls timer_interrupt_cpu() for CPU 3706 a8c7c708Swdenk specific handling. If board has watchdog / status_led 3707 a8c7c708Swdenk / other_activity_monitor it works automatically from 3708 a8c7c708Swdenk general timer_interrupt(). 3709 a8c7c708Swdenk 3710 c609719bSwdenk- General: 3711 c609719bSwdenk 3712 c609719bSwdenk In the target system modem support is enabled when a 3713 c609719bSwdenk specific key (key combination) is pressed during 3714 c609719bSwdenk power-on. Otherwise U-Boot will boot normally 3715 11ccc33fSMarcel Ziswiler (autoboot). The key_pressed() function is called from 3716 c609719bSwdenk board_init(). Currently key_pressed() is a dummy 3717 c609719bSwdenk function, returning 1 and thus enabling modem 3718 c609719bSwdenk initialization. 3719 c609719bSwdenk 3720 c609719bSwdenk If there are no modem init strings in the 3721 c609719bSwdenk environment, U-Boot proceed to autoboot; the 3722 c609719bSwdenk previous output (banner, info printfs) will be 3723 11ccc33fSMarcel Ziswiler suppressed, though. 3724 c609719bSwdenk 3725 c609719bSwdenk See also: doc/README.Modem 3726 c609719bSwdenk 3727 9660e442SHelmut RaigerBoard initialization settings: 3728 9660e442SHelmut Raiger------------------------------ 3729 9660e442SHelmut Raiger 3730 9660e442SHelmut RaigerDuring Initialization u-boot calls a number of board specific functions 3731 9660e442SHelmut Raigerto allow the preparation of board specific prerequisites, e.g. pin setup 3732 9660e442SHelmut Raigerbefore drivers are initialized. To enable these callbacks the 3733 9660e442SHelmut Raigerfollowing configuration macros have to be defined. Currently this is 3734 9660e442SHelmut Raigerarchitecture specific, so please check arch/your_architecture/lib/board.c 3735 9660e442SHelmut Raigertypically in board_init_f() and board_init_r(). 3736 9660e442SHelmut Raiger 3737 9660e442SHelmut Raiger- CONFIG_BOARD_EARLY_INIT_F: Call board_early_init_f() 3738 9660e442SHelmut Raiger- CONFIG_BOARD_EARLY_INIT_R: Call board_early_init_r() 3739 9660e442SHelmut Raiger- CONFIG_BOARD_LATE_INIT: Call board_late_init() 3740 9660e442SHelmut Raiger- CONFIG_BOARD_POSTCLK_INIT: Call board_postclk_init() 3741 c609719bSwdenk 3742 c609719bSwdenkConfiguration Settings: 3743 c609719bSwdenk----------------------- 3744 c609719bSwdenk 3745 4d1fd7f1SYork Sun- CONFIG_SYS_SUPPORT_64BIT_DATA: Defined automatically if compiled as 64-bit. 3746 4d1fd7f1SYork Sun Optionally it can be defined to support 64-bit memory commands. 3747 4d1fd7f1SYork Sun 3748 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_LONGHELP: Defined when you want long help messages included; 3749 c609719bSwdenk undefine this when you're short of memory. 3750 c609719bSwdenk 3751 2fb2604dSPeter Tyser- CONFIG_SYS_HELP_CMD_WIDTH: Defined when you want to override the default 3752 2fb2604dSPeter Tyser width of the commands listed in the 'help' command output. 3753 2fb2604dSPeter Tyser 3754 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PROMPT: This is what U-Boot prints on the console to 3755 c609719bSwdenk prompt for user input. 3756 c609719bSwdenk 3757 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CBSIZE: Buffer size for input from the Console 3758 c609719bSwdenk 3759 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PBSIZE: Buffer size for Console output 3760 c609719bSwdenk 3761 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAXARGS: max. Number of arguments accepted for monitor commands 3762 c609719bSwdenk 3763 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BARGSIZE: Buffer size for Boot Arguments which are passed to 3764 c609719bSwdenk the application (usually a Linux kernel) when it is 3765 c609719bSwdenk booted 3766 c609719bSwdenk 3767 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BAUDRATE_TABLE: 3768 c609719bSwdenk List of legal baudrate settings for this board. 3769 c609719bSwdenk 3770 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_INFO_QUIET 3771 c609719bSwdenk Suppress display of console information at boot. 3772 c609719bSwdenk 3773 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_IS_IN_ENV 3774 c609719bSwdenk If the board specific function 3775 c609719bSwdenk extern int overwrite_console (void); 3776 c609719bSwdenk returns 1, the stdin, stderr and stdout are switched to the 3777 c609719bSwdenk serial port, else the settings in the environment are used. 3778 c609719bSwdenk 3779 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE 3780 c609719bSwdenk Enable the call to overwrite_console(). 3781 c609719bSwdenk 3782 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_ENV_OVERWRITE 3783 c609719bSwdenk Enable overwrite of previous console environment settings. 3784 c609719bSwdenk 3785 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEMTEST_START, CONFIG_SYS_MEMTEST_END: 3786 c609719bSwdenk Begin and End addresses of the area used by the 3787 c609719bSwdenk simple memory test. 3788 c609719bSwdenk 3789 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_ALT_MEMTEST: 3790 c609719bSwdenk Enable an alternate, more extensive memory test. 3791 c609719bSwdenk 3792 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEMTEST_SCRATCH: 3793 5f535fe1Swdenk Scratch address used by the alternate memory test 3794 5f535fe1Swdenk You only need to set this if address zero isn't writeable 3795 5f535fe1Swdenk 3796 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEM_TOP_HIDE (PPC only): 3797 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD If CONFIG_SYS_MEM_TOP_HIDE is defined in the board config header, 3798 14f73ca6SStefan Roese this specified memory area will get subtracted from the top 3799 11ccc33fSMarcel Ziswiler (end) of RAM and won't get "touched" at all by U-Boot. By 3800 14f73ca6SStefan Roese fixing up gd->ram_size the Linux kernel should gets passed 3801 14f73ca6SStefan Roese the now "corrected" memory size and won't touch it either. 3802 14f73ca6SStefan Roese This should work for arch/ppc and arch/powerpc. Only Linux 3803 5e12e75dSStefan Roese board ports in arch/powerpc with bootwrapper support that 3804 14f73ca6SStefan Roese recalculate the memory size from the SDRAM controller setup 3805 5e12e75dSStefan Roese will have to get fixed in Linux additionally. 3806 14f73ca6SStefan Roese 3807 14f73ca6SStefan Roese This option can be used as a workaround for the 440EPx/GRx 3808 14f73ca6SStefan Roese CHIP 11 errata where the last 256 bytes in SDRAM shouldn't 3809 14f73ca6SStefan Roese be touched. 3810 14f73ca6SStefan Roese 3811 14f73ca6SStefan Roese WARNING: Please make sure that this value is a multiple of 3812 14f73ca6SStefan Roese the Linux page size (normally 4k). If this is not the case, 3813 14f73ca6SStefan Roese then the end address of the Linux memory will be located at a 3814 14f73ca6SStefan Roese non page size aligned address and this could cause major 3815 14f73ca6SStefan Roese problems. 3816 14f73ca6SStefan Roese 3817 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_LOADS_BAUD_CHANGE: 3818 c609719bSwdenk Enable temporary baudrate change while serial download 3819 c609719bSwdenk 3820 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SDRAM_BASE: 3821 c609719bSwdenk Physical start address of SDRAM. _Must_ be 0 here. 3822 c609719bSwdenk 3823 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MBIO_BASE: 3824 c609719bSwdenk Physical start address of Motherboard I/O (if using a 3825 c609719bSwdenk Cogent motherboard) 3826 c609719bSwdenk 3827 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_BASE: 3828 c609719bSwdenk Physical start address of Flash memory. 3829 c609719bSwdenk 3830 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MONITOR_BASE: 3831 c609719bSwdenk Physical start address of boot monitor code (set by 3832 c609719bSwdenk make config files to be same as the text base address 3833 14d0a02aSWolfgang Denk (CONFIG_SYS_TEXT_BASE) used when linking) - same as 3834 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FLASH_BASE when booting from flash. 3835 c609719bSwdenk 3836 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MONITOR_LEN: 3837 3b57fe0aSwdenk Size of memory reserved for monitor code, used to 3838 3b57fe0aSwdenk determine _at_compile_time_ (!) if the environment is 3839 3b57fe0aSwdenk embedded within the U-Boot image, or in a separate 3840 3b57fe0aSwdenk flash sector. 3841 c609719bSwdenk 3842 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MALLOC_LEN: 3843 c609719bSwdenk Size of DRAM reserved for malloc() use. 3844 c609719bSwdenk 3845 d59476b6SSimon Glass- CONFIG_SYS_MALLOC_F_LEN 3846 d59476b6SSimon Glass Size of the malloc() pool for use before relocation. If 3847 d59476b6SSimon Glass this is defined, then a very simple malloc() implementation 3848 d59476b6SSimon Glass will become available before relocation. The address is just 3849 d59476b6SSimon Glass below the global data, and the stack is moved down to make 3850 d59476b6SSimon Glass space. 3851 d59476b6SSimon Glass 3852 d59476b6SSimon Glass This feature allocates regions with increasing addresses 3853 d59476b6SSimon Glass within the region. calloc() is supported, but realloc() 3854 d59476b6SSimon Glass is not available. free() is supported but does nothing. 3855 d59476b6SSimon Glass The memory will be freed (or in fact just forgotton) when 3856 d59476b6SSimon Glass U-Boot relocates itself. 3857 d59476b6SSimon Glass 3858 e7b14e9aSSimon Glass Pre-relocation malloc() is only supported on ARM and sandbox 3859 29afe9e6SSimon Glass at present but is fairly easy to enable for other archs. 3860 29afe9e6SSimon Glass 3861 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BOOTM_LEN: 3862 15940c9aSStefan Roese Normally compressed uImages are limited to an 3863 15940c9aSStefan Roese uncompressed size of 8 MBytes. If this is not enough, 3864 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD you can define CONFIG_SYS_BOOTM_LEN in your board config file 3865 15940c9aSStefan Roese to adjust this setting to your needs. 3866 c609719bSwdenk 3867 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BOOTMAPSZ: 3868 c609719bSwdenk Maximum size of memory mapped by the startup code of 3869 c609719bSwdenk the Linux kernel; all data that must be processed by 3870 7d721e34SBartlomiej Sieka the Linux kernel (bd_info, boot arguments, FDT blob if 3871 7d721e34SBartlomiej Sieka used) must be put below this limit, unless "bootm_low" 3872 1bce2aebSRobert P. J. Day environment variable is defined and non-zero. In such case 3873 7d721e34SBartlomiej Sieka all data for the Linux kernel must be between "bootm_low" 3874 c3624e6eSGrant Likely and "bootm_low" + CONFIG_SYS_BOOTMAPSZ. The environment 3875 c3624e6eSGrant Likely variable "bootm_mapsize" will override the value of 3876 c3624e6eSGrant Likely CONFIG_SYS_BOOTMAPSZ. If CONFIG_SYS_BOOTMAPSZ is undefined, 3877 c3624e6eSGrant Likely then the value in "bootm_size" will be used instead. 3878 c609719bSwdenk 3879 fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_RAMDISK_HIGH: 3880 fca43cc8SJohn Rigby Enable initrd_high functionality. If defined then the 3881 fca43cc8SJohn Rigby initrd_high feature is enabled and the bootm ramdisk subcommand 3882 fca43cc8SJohn Rigby is enabled. 3883 fca43cc8SJohn Rigby 3884 fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_GET_CMDLINE: 3885 fca43cc8SJohn Rigby Enables allocating and saving kernel cmdline in space between 3886 fca43cc8SJohn Rigby "bootm_low" and "bootm_low" + BOOTMAPSZ. 3887 fca43cc8SJohn Rigby 3888 fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_GET_KBD: 3889 fca43cc8SJohn Rigby Enables allocating and saving a kernel copy of the bd_info in 3890 fca43cc8SJohn Rigby space between "bootm_low" and "bootm_low" + BOOTMAPSZ. 3891 fca43cc8SJohn Rigby 3892 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAX_FLASH_BANKS: 3893 c609719bSwdenk Max number of Flash memory banks 3894 c609719bSwdenk 3895 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAX_FLASH_SECT: 3896 c609719bSwdenk Max number of sectors on a Flash chip 3897 c609719bSwdenk 3898 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_ERASE_TOUT: 3899 c609719bSwdenk Timeout for Flash erase operations (in ms) 3900 c609719bSwdenk 3901 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_WRITE_TOUT: 3902 c609719bSwdenk Timeout for Flash write operations (in ms) 3903 c609719bSwdenk 3904 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_LOCK_TOUT 3905 8564acf9Swdenk Timeout for Flash set sector lock bit operation (in ms) 3906 8564acf9Swdenk 3907 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_UNLOCK_TOUT 3908 8564acf9Swdenk Timeout for Flash clear lock bits operation (in ms) 3909 8564acf9Swdenk 3910 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_PROTECTION 3911 8564acf9Swdenk If defined, hardware flash sectors protection is used 3912 8564acf9Swdenk instead of U-Boot software protection. 3913 8564acf9Swdenk 3914 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DIRECT_FLASH_TFTP: 3915 c609719bSwdenk 3916 c609719bSwdenk Enable TFTP transfers directly to flash memory; 3917 c609719bSwdenk without this option such a download has to be 3918 c609719bSwdenk performed in two steps: (1) download to RAM, and (2) 3919 c609719bSwdenk copy from RAM to flash. 3920 c609719bSwdenk 3921 c609719bSwdenk The two-step approach is usually more reliable, since 3922 c609719bSwdenk you can check if the download worked before you erase 3923 11ccc33fSMarcel Ziswiler the flash, but in some situations (when system RAM is 3924 11ccc33fSMarcel Ziswiler too limited to allow for a temporary copy of the 3925 c609719bSwdenk downloaded image) this option may be very useful. 3926 c609719bSwdenk 3927 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_CFI: 3928 c609719bSwdenk Define if the flash driver uses extra elements in the 3929 5653fc33Swdenk common flash structure for storing flash geometry. 3930 5653fc33Swdenk 3931 00b1883aSJean-Christophe PLAGNIOL-VILLARD- CONFIG_FLASH_CFI_DRIVER 3932 5653fc33Swdenk This option also enables the building of the cfi_flash driver 3933 5653fc33Swdenk in the drivers directory 3934 53cf9435Sstroese 3935 91809ed5SPiotr Ziecik- CONFIG_FLASH_CFI_MTD 3936 91809ed5SPiotr Ziecik This option enables the building of the cfi_mtd driver 3937 91809ed5SPiotr Ziecik in the drivers directory. The driver exports CFI flash 3938 91809ed5SPiotr Ziecik to the MTD layer. 3939 91809ed5SPiotr Ziecik 3940 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_USE_BUFFER_WRITE 3941 96ef831fSGuennadi Liakhovetski Use buffered writes to flash. 3942 96ef831fSGuennadi Liakhovetski 3943 96ef831fSGuennadi Liakhovetski- CONFIG_FLASH_SPANSION_S29WS_N 3944 96ef831fSGuennadi Liakhovetski s29ws-n MirrorBit flash has non-standard addresses for buffered 3945 96ef831fSGuennadi Liakhovetski write commands. 3946 96ef831fSGuennadi Liakhovetski 3947 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_QUIET_TEST 3948 5568e613SStefan Roese If this option is defined, the common CFI flash doesn't 3949 5568e613SStefan Roese print it's warning upon not recognized FLASH banks. This 3950 5568e613SStefan Roese is useful, if some of the configured banks are only 3951 5568e613SStefan Roese optionally available. 3952 5568e613SStefan Roese 3953 9a042e9cSJerry Van Baren- CONFIG_FLASH_SHOW_PROGRESS 3954 9a042e9cSJerry Van Baren If defined (must be an integer), print out countdown 3955 9a042e9cSJerry Van Baren digits and dots. Recommended value: 45 (9..1) for 80 3956 9a042e9cSJerry Van Baren column displays, 15 (3..1) for 40 column displays. 3957 9a042e9cSJerry Van Baren 3958 352ef3f1SStefan Roese- CONFIG_FLASH_VERIFY 3959 352ef3f1SStefan Roese If defined, the content of the flash (destination) is compared 3960 352ef3f1SStefan Roese against the source after the write operation. An error message 3961 352ef3f1SStefan Roese will be printed when the contents are not identical. 3962 352ef3f1SStefan Roese Please note that this option is useless in nearly all cases, 3963 352ef3f1SStefan Roese since such flash programming errors usually are detected earlier 3964 352ef3f1SStefan Roese while unprotecting/erasing/programming. Please only enable 3965 352ef3f1SStefan Roese this option if you really know what you are doing. 3966 352ef3f1SStefan Roese 3967 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_RX_ETH_BUFFER: 3968 11ccc33fSMarcel Ziswiler Defines the number of Ethernet receive buffers. On some 3969 11ccc33fSMarcel Ziswiler Ethernet controllers it is recommended to set this value 3970 53cf9435Sstroese to 8 or even higher (EEPRO100 or 405 EMAC), since all 3971 53cf9435Sstroese buffers can be full shortly after enabling the interface 3972 11ccc33fSMarcel Ziswiler on high Ethernet traffic. 3973 53cf9435Sstroese Defaults to 4 if not defined. 3974 c609719bSwdenk 3975 ea882bafSWolfgang Denk- CONFIG_ENV_MAX_ENTRIES 3976 ea882bafSWolfgang Denk 3977 ea882bafSWolfgang Denk Maximum number of entries in the hash table that is used 3978 ea882bafSWolfgang Denk internally to store the environment settings. The default 3979 ea882bafSWolfgang Denk setting is supposed to be generous and should work in most 3980 ea882bafSWolfgang Denk cases. This setting can be used to tune behaviour; see 3981 ea882bafSWolfgang Denk lib/hashtable.c for details. 3982 ea882bafSWolfgang Denk 3983 2598090bSJoe Hershberger- CONFIG_ENV_FLAGS_LIST_DEFAULT 3984 2598090bSJoe Hershberger- CONFIG_ENV_FLAGS_LIST_STATIC 3985 1bce2aebSRobert P. J. Day Enable validation of the values given to environment variables when 3986 2598090bSJoe Hershberger calling env set. Variables can be restricted to only decimal, 3987 2598090bSJoe Hershberger hexadecimal, or boolean. If CONFIG_CMD_NET is also defined, 3988 2598090bSJoe Hershberger the variables can also be restricted to IP address or MAC address. 3989 2598090bSJoe Hershberger 3990 2598090bSJoe Hershberger The format of the list is: 3991 2598090bSJoe Hershberger type_attribute = [s|d|x|b|i|m] 3992 267541f7SJoe Hershberger access_atribute = [a|r|o|c] 3993 267541f7SJoe Hershberger attributes = type_attribute[access_atribute] 3994 2598090bSJoe Hershberger entry = variable_name[:attributes] 3995 2598090bSJoe Hershberger list = entry[,list] 3996 2598090bSJoe Hershberger 3997 2598090bSJoe Hershberger The type attributes are: 3998 2598090bSJoe Hershberger s - String (default) 3999 2598090bSJoe Hershberger d - Decimal 4000 2598090bSJoe Hershberger x - Hexadecimal 4001 2598090bSJoe Hershberger b - Boolean ([1yYtT|0nNfF]) 4002 2598090bSJoe Hershberger i - IP address 4003 2598090bSJoe Hershberger m - MAC address 4004 2598090bSJoe Hershberger 4005 267541f7SJoe Hershberger The access attributes are: 4006 267541f7SJoe Hershberger a - Any (default) 4007 267541f7SJoe Hershberger r - Read-only 4008 267541f7SJoe Hershberger o - Write-once 4009 267541f7SJoe Hershberger c - Change-default 4010 267541f7SJoe Hershberger 4011 2598090bSJoe Hershberger - CONFIG_ENV_FLAGS_LIST_DEFAULT 4012 2598090bSJoe Hershberger Define this to a list (string) to define the ".flags" 4013 2598090bSJoe Hershberger envirnoment variable in the default or embedded environment. 4014 2598090bSJoe Hershberger 4015 2598090bSJoe Hershberger - CONFIG_ENV_FLAGS_LIST_STATIC 4016 2598090bSJoe Hershberger Define this to a list (string) to define validation that 4017 2598090bSJoe Hershberger should be done if an entry is not found in the ".flags" 4018 2598090bSJoe Hershberger environment variable. To override a setting in the static 4019 2598090bSJoe Hershberger list, simply add an entry for the same variable name to the 4020 2598090bSJoe Hershberger ".flags" variable. 4021 2598090bSJoe Hershberger 4022 267541f7SJoe Hershberger- CONFIG_ENV_ACCESS_IGNORE_FORCE 4023 267541f7SJoe Hershberger If defined, don't allow the -f switch to env set override variable 4024 267541f7SJoe Hershberger access flags. 4025 267541f7SJoe Hershberger 4026 5c1a7ea6SSimon Glass- CONFIG_SYS_GENERIC_BOARD 4027 5c1a7ea6SSimon Glass This selects the architecture-generic board system instead of the 4028 5c1a7ea6SSimon Glass architecture-specific board files. It is intended to move boards 4029 5c1a7ea6SSimon Glass to this new framework over time. Defining this will disable the 4030 5c1a7ea6SSimon Glass arch/foo/lib/board.c file and use common/board_f.c and 4031 5c1a7ea6SSimon Glass common/board_r.c instead. To use this option your architecture 4032 5c1a7ea6SSimon Glass must support it (i.e. must define __HAVE_ARCH_GENERIC_BOARD in 4033 5c1a7ea6SSimon Glass its config.mk file). If you find problems enabling this option on 4034 5c1a7ea6SSimon Glass your board please report the problem and send patches! 4035 5c1a7ea6SSimon Glass 4036 0b1b60c7SLokesh Vutla- CONFIG_OMAP_PLATFORM_RESET_TIME_MAX_USEC (OMAP only) 4037 0b1b60c7SLokesh Vutla This is set by OMAP boards for the max time that reset should 4038 0b1b60c7SLokesh Vutla be asserted. See doc/README.omap-reset-time for details on how 4039 0b1b60c7SLokesh Vutla the value can be calulated on a given board. 4040 632efa74SSimon Glass 4041 c609719bSwdenkThe following definitions that deal with the placement and management 4042 c609719bSwdenkof environment data (variable area); in general, we support the 4043 c609719bSwdenkfollowing configurations: 4044 c609719bSwdenk 4045 c3eb3fe4SMike Frysinger- CONFIG_BUILD_ENVCRC: 4046 c3eb3fe4SMike Frysinger 4047 c3eb3fe4SMike Frysinger Builds up envcrc with the target environment so that external utils 4048 c3eb3fe4SMike Frysinger may easily extract it and embed it in final U-Boot images. 4049 c3eb3fe4SMike Frysinger 4050 5a1aceb0SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_FLASH: 4051 c609719bSwdenk 4052 c609719bSwdenk Define this if the environment is in flash memory. 4053 c609719bSwdenk 4054 c609719bSwdenk a) The environment occupies one whole flash sector, which is 4055 c609719bSwdenk "embedded" in the text segment with the U-Boot code. This 4056 c609719bSwdenk happens usually with "bottom boot sector" or "top boot 4057 c609719bSwdenk sector" type flash chips, which have several smaller 4058 c609719bSwdenk sectors at the start or the end. For instance, such a 4059 c609719bSwdenk layout can have sector sizes of 8, 2x4, 16, Nx32 kB. In 4060 c609719bSwdenk such a case you would place the environment in one of the 4061 c609719bSwdenk 4 kB sectors - with U-Boot code before and after it. With 4062 c609719bSwdenk "top boot sector" type flash chips, you would put the 4063 c609719bSwdenk environment in one of the last sectors, leaving a gap 4064 c609719bSwdenk between U-Boot and the environment. 4065 c609719bSwdenk 4066 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 4067 c609719bSwdenk 4068 c609719bSwdenk Offset of environment data (variable area) to the 4069 c609719bSwdenk beginning of flash memory; for instance, with bottom boot 4070 c609719bSwdenk type flash chips the second sector can be used: the offset 4071 c609719bSwdenk for this sector is given here. 4072 c609719bSwdenk 4073 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_OFFSET is used relative to CONFIG_SYS_FLASH_BASE. 4074 c609719bSwdenk 4075 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 4076 c609719bSwdenk 4077 c609719bSwdenk This is just another way to specify the start address of 4078 c609719bSwdenk the flash sector containing the environment (instead of 4079 0e8d1586SJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_OFFSET). 4080 c609719bSwdenk 4081 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SECT_SIZE: 4082 c609719bSwdenk 4083 c609719bSwdenk Size of the sector containing the environment. 4084 c609719bSwdenk 4085 c609719bSwdenk 4086 c609719bSwdenk b) Sometimes flash chips have few, equal sized, BIG sectors. 4087 c609719bSwdenk In such a case you don't want to spend a whole sector for 4088 c609719bSwdenk the environment. 4089 c609719bSwdenk 4090 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 4091 c609719bSwdenk 4092 5a1aceb0SJean-Christophe PLAGNIOL-VILLARD If you use this in combination with CONFIG_ENV_IS_IN_FLASH 4093 0e8d1586SJean-Christophe PLAGNIOL-VILLARD and CONFIG_ENV_SECT_SIZE, you can specify to use only a part 4094 c609719bSwdenk of this flash sector for the environment. This saves 4095 c609719bSwdenk memory for the RAM copy of the environment. 4096 c609719bSwdenk 4097 c609719bSwdenk It may also save flash memory if you decide to use this 4098 c609719bSwdenk when your environment is "embedded" within U-Boot code, 4099 c609719bSwdenk since then the remainder of the flash sector could be used 4100 c609719bSwdenk for U-Boot code. It should be pointed out that this is 4101 c609719bSwdenk STRONGLY DISCOURAGED from a robustness point of view: 4102 c609719bSwdenk updating the environment in flash makes it always 4103 c609719bSwdenk necessary to erase the WHOLE sector. If something goes 4104 c609719bSwdenk wrong before the contents has been restored from a copy in 4105 c609719bSwdenk RAM, your target system will be dead. 4106 c609719bSwdenk 4107 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR_REDUND 4108 0e8d1586SJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_SIZE_REDUND 4109 c609719bSwdenk 4110 c609719bSwdenk These settings describe a second storage area used to hold 4111 11ccc33fSMarcel Ziswiler a redundant copy of the environment data, so that there is 4112 3e38691eSwdenk a valid backup copy in case there is a power failure during 4113 c609719bSwdenk a "saveenv" operation. 4114 c609719bSwdenk 4115 c609719bSwdenkBE CAREFUL! Any changes to the flash layout, and some changes to the 4116 c609719bSwdenksource code will make it necessary to adapt <board>/u-boot.lds* 4117 c609719bSwdenkaccordingly! 4118 c609719bSwdenk 4119 c609719bSwdenk 4120 9314cee6SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_NVRAM: 4121 c609719bSwdenk 4122 c609719bSwdenk Define this if you have some non-volatile memory device 4123 c609719bSwdenk (NVRAM, battery buffered SRAM) which you want to use for the 4124 c609719bSwdenk environment. 4125 c609719bSwdenk 4126 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 4127 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 4128 c609719bSwdenk 4129 11ccc33fSMarcel Ziswiler These two #defines are used to determine the memory area you 4130 c609719bSwdenk want to use for environment. It is assumed that this memory 4131 c609719bSwdenk can just be read and written to, without any special 4132 c609719bSwdenk provision. 4133 c609719bSwdenk 4134 c609719bSwdenkBE CAREFUL! The first access to the environment happens quite early 4135 c609719bSwdenkin U-Boot initalization (when we try to get the setting of for the 4136 11ccc33fSMarcel Ziswilerconsole baudrate). You *MUST* have mapped your NVRAM area then, or 4137 c609719bSwdenkU-Boot will hang. 4138 c609719bSwdenk 4139 c609719bSwdenkPlease note that even with NVRAM we still use a copy of the 4140 c609719bSwdenkenvironment in RAM: we could work on NVRAM directly, but we want to 4141 c609719bSwdenkkeep settings there always unmodified except somebody uses "saveenv" 4142 c609719bSwdenkto save the current settings. 4143 c609719bSwdenk 4144 c609719bSwdenk 4145 bb1f8b4fSJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_EEPROM: 4146 c609719bSwdenk 4147 c609719bSwdenk Use this if you have an EEPROM or similar serial access 4148 c609719bSwdenk device and a driver for it. 4149 c609719bSwdenk 4150 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 4151 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 4152 c609719bSwdenk 4153 c609719bSwdenk These two #defines specify the offset and size of the 4154 c609719bSwdenk environment area within the total memory of your EEPROM. 4155 c609719bSwdenk 4156 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR: 4157 c609719bSwdenk If defined, specified the chip address of the EEPROM device. 4158 c609719bSwdenk The default address is zero. 4159 c609719bSwdenk 4160 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_PAGE_WRITE_BITS: 4161 c609719bSwdenk If defined, the number of bits used to address bytes in a 4162 c609719bSwdenk single page in the EEPROM device. A 64 byte page, for example 4163 c609719bSwdenk would require six bits. 4164 c609719bSwdenk 4165 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS: 4166 c609719bSwdenk If defined, the number of milliseconds to delay between 4167 c609719bSwdenk page writes. The default is zero milliseconds. 4168 c609719bSwdenk 4169 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR_LEN: 4170 c609719bSwdenk The length in bytes of the EEPROM memory array address. Note 4171 c609719bSwdenk that this is NOT the chip address length! 4172 c609719bSwdenk 4173 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW: 4174 5cf91d6bSwdenk EEPROM chips that implement "address overflow" are ones 4175 5cf91d6bSwdenk like Catalyst 24WC04/08/16 which has 9/10/11 bits of 4176 5cf91d6bSwdenk address and the extra bits end up in the "chip address" bit 4177 5cf91d6bSwdenk slots. This makes a 24WC08 (1Kbyte) chip look like four 256 4178 5cf91d6bSwdenk byte chips. 4179 5cf91d6bSwdenk 4180 5cf91d6bSwdenk Note that we consider the length of the address field to 4181 5cf91d6bSwdenk still be one byte because the extra address bits are hidden 4182 5cf91d6bSwdenk in the chip address. 4183 5cf91d6bSwdenk 4184 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_SIZE: 4185 c609719bSwdenk The size in bytes of the EEPROM device. 4186 c609719bSwdenk 4187 548738b4SHeiko Schocher - CONFIG_ENV_EEPROM_IS_ON_I2C 4188 548738b4SHeiko Schocher define this, if you have I2C and SPI activated, and your 4189 548738b4SHeiko Schocher EEPROM, which holds the environment, is on the I2C bus. 4190 548738b4SHeiko Schocher 4191 548738b4SHeiko Schocher - CONFIG_I2C_ENV_EEPROM_BUS 4192 548738b4SHeiko Schocher if you have an Environment on an EEPROM reached over 4193 548738b4SHeiko Schocher I2C muxes, you can define here, how to reach this 4194 548738b4SHeiko Schocher EEPROM. For example: 4195 548738b4SHeiko Schocher 4196 ea818dbbSHeiko Schocher #define CONFIG_I2C_ENV_EEPROM_BUS 1 4197 548738b4SHeiko Schocher 4198 548738b4SHeiko Schocher EEPROM which holds the environment, is reached over 4199 548738b4SHeiko Schocher a pca9547 i2c mux with address 0x70, channel 3. 4200 c609719bSwdenk 4201 057c849cSJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_DATAFLASH: 4202 5779d8d9Swdenk 4203 5779d8d9Swdenk Define this if you have a DataFlash memory device which you 4204 5779d8d9Swdenk want to use for the environment. 4205 5779d8d9Swdenk 4206 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 4207 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 4208 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 4209 5779d8d9Swdenk 4210 5779d8d9Swdenk These three #defines specify the offset and size of the 4211 5779d8d9Swdenk environment area within the total memory of your DataFlash placed 4212 5779d8d9Swdenk at the specified address. 4213 5779d8d9Swdenk 4214 bd83b592SWu, Josh- CONFIG_ENV_IS_IN_SPI_FLASH: 4215 bd83b592SWu, Josh 4216 bd83b592SWu, Josh Define this if you have a SPI Flash memory device which you 4217 bd83b592SWu, Josh want to use for the environment. 4218 bd83b592SWu, Josh 4219 bd83b592SWu, Josh - CONFIG_ENV_OFFSET: 4220 bd83b592SWu, Josh - CONFIG_ENV_SIZE: 4221 bd83b592SWu, Josh 4222 bd83b592SWu, Josh These two #defines specify the offset and size of the 4223 bd83b592SWu, Josh environment area within the SPI Flash. CONFIG_ENV_OFFSET must be 4224 bd83b592SWu, Josh aligned to an erase sector boundary. 4225 bd83b592SWu, Josh 4226 bd83b592SWu, Josh - CONFIG_ENV_SECT_SIZE: 4227 bd83b592SWu, Josh 4228 bd83b592SWu, Josh Define the SPI flash's sector size. 4229 bd83b592SWu, Josh 4230 bd83b592SWu, Josh - CONFIG_ENV_OFFSET_REDUND (optional): 4231 bd83b592SWu, Josh 4232 bd83b592SWu, Josh This setting describes a second storage area of CONFIG_ENV_SIZE 4233 bd83b592SWu, Josh size used to hold a redundant copy of the environment data, so 4234 bd83b592SWu, Josh that there is a valid backup copy in case there is a power failure 4235 bd83b592SWu, Josh during a "saveenv" operation. CONFIG_ENV_OFFSET_RENDUND must be 4236 bd83b592SWu, Josh aligned to an erase sector boundary. 4237 bd83b592SWu, Josh 4238 bd83b592SWu, Josh - CONFIG_ENV_SPI_BUS (optional): 4239 bd83b592SWu, Josh - CONFIG_ENV_SPI_CS (optional): 4240 bd83b592SWu, Josh 4241 bd83b592SWu, Josh Define the SPI bus and chip select. If not defined they will be 0. 4242 bd83b592SWu, Josh 4243 bd83b592SWu, Josh - CONFIG_ENV_SPI_MAX_HZ (optional): 4244 bd83b592SWu, Josh 4245 bd83b592SWu, Josh Define the SPI max work clock. If not defined then use 1MHz. 4246 bd83b592SWu, Josh 4247 bd83b592SWu, Josh - CONFIG_ENV_SPI_MODE (optional): 4248 bd83b592SWu, Josh 4249 bd83b592SWu, Josh Define the SPI work mode. If not defined then use SPI_MODE_3. 4250 bd83b592SWu, Josh 4251 0a85a9e7SLiu Gang- CONFIG_ENV_IS_IN_REMOTE: 4252 0a85a9e7SLiu Gang 4253 0a85a9e7SLiu Gang Define this if you have a remote memory space which you 4254 0a85a9e7SLiu Gang want to use for the local device's environment. 4255 0a85a9e7SLiu Gang 4256 0a85a9e7SLiu Gang - CONFIG_ENV_ADDR: 4257 0a85a9e7SLiu Gang - CONFIG_ENV_SIZE: 4258 0a85a9e7SLiu Gang 4259 0a85a9e7SLiu Gang These two #defines specify the address and size of the 4260 0a85a9e7SLiu Gang environment area within the remote memory space. The 4261 0a85a9e7SLiu Gang local device can get the environment from remote memory 4262 fc54c7faSLiu Gang space by SRIO or PCIE links. 4263 0a85a9e7SLiu Gang 4264 0a85a9e7SLiu GangBE CAREFUL! For some special cases, the local device can not use 4265 0a85a9e7SLiu Gang"saveenv" command. For example, the local device will get the 4266 fc54c7faSLiu Gangenvironment stored in a remote NOR flash by SRIO or PCIE link, 4267 fc54c7faSLiu Gangbut it can not erase, write this NOR flash by SRIO or PCIE interface. 4268 0a85a9e7SLiu Gang 4269 51bfee19SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_NAND: 4270 13a5695bSwdenk 4271 13a5695bSwdenk Define this if you have a NAND device which you want to use 4272 13a5695bSwdenk for the environment. 4273 13a5695bSwdenk 4274 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 4275 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 4276 13a5695bSwdenk 4277 13a5695bSwdenk These two #defines specify the offset and size of the environment 4278 fdd813deSScott Wood area within the first NAND device. CONFIG_ENV_OFFSET must be 4279 fdd813deSScott Wood aligned to an erase block boundary. 4280 5779d8d9Swdenk 4281 fdd813deSScott Wood - CONFIG_ENV_OFFSET_REDUND (optional): 4282 e443c944SMarkus Klotzbuecher 4283 0e8d1586SJean-Christophe PLAGNIOL-VILLARD This setting describes a second storage area of CONFIG_ENV_SIZE 4284 fdd813deSScott Wood size used to hold a redundant copy of the environment data, so 4285 fdd813deSScott Wood that there is a valid backup copy in case there is a power failure 4286 fdd813deSScott Wood during a "saveenv" operation. CONFIG_ENV_OFFSET_RENDUND must be 4287 fdd813deSScott Wood aligned to an erase block boundary. 4288 e443c944SMarkus Klotzbuecher 4289 fdd813deSScott Wood - CONFIG_ENV_RANGE (optional): 4290 fdd813deSScott Wood 4291 fdd813deSScott Wood Specifies the length of the region in which the environment 4292 fdd813deSScott Wood can be written. This should be a multiple of the NAND device's 4293 fdd813deSScott Wood block size. Specifying a range with more erase blocks than 4294 fdd813deSScott Wood are needed to hold CONFIG_ENV_SIZE allows bad blocks within 4295 fdd813deSScott Wood the range to be avoided. 4296 fdd813deSScott Wood 4297 fdd813deSScott Wood - CONFIG_ENV_OFFSET_OOB (optional): 4298 fdd813deSScott Wood 4299 fdd813deSScott Wood Enables support for dynamically retrieving the offset of the 4300 fdd813deSScott Wood environment from block zero's out-of-band data. The 4301 fdd813deSScott Wood "nand env.oob" command can be used to record this offset. 4302 fdd813deSScott Wood Currently, CONFIG_ENV_OFFSET_REDUND is not supported when 4303 fdd813deSScott Wood using CONFIG_ENV_OFFSET_OOB. 4304 e443c944SMarkus Klotzbuecher 4305 b74ab737SGuennadi Liakhovetski- CONFIG_NAND_ENV_DST 4306 b74ab737SGuennadi Liakhovetski 4307 b74ab737SGuennadi Liakhovetski Defines address in RAM to which the nand_spl code should copy the 4308 b74ab737SGuennadi Liakhovetski environment. If redundant environment is used, it will be copied to 4309 b74ab737SGuennadi Liakhovetski CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE. 4310 b74ab737SGuennadi Liakhovetski 4311 2b74433fSJoe Hershberger- CONFIG_ENV_IS_IN_UBI: 4312 2b74433fSJoe Hershberger 4313 2b74433fSJoe Hershberger Define this if you have an UBI volume that you want to use for the 4314 2b74433fSJoe Hershberger environment. This has the benefit of wear-leveling the environment 4315 2b74433fSJoe Hershberger accesses, which is important on NAND. 4316 2b74433fSJoe Hershberger 4317 2b74433fSJoe Hershberger - CONFIG_ENV_UBI_PART: 4318 2b74433fSJoe Hershberger 4319 2b74433fSJoe Hershberger Define this to a string that is the mtd partition containing the UBI. 4320 2b74433fSJoe Hershberger 4321 2b74433fSJoe Hershberger - CONFIG_ENV_UBI_VOLUME: 4322 2b74433fSJoe Hershberger 4323 2b74433fSJoe Hershberger Define this to the name of the volume that you want to store the 4324 2b74433fSJoe Hershberger environment in. 4325 2b74433fSJoe Hershberger 4326 785881f7SJoe Hershberger - CONFIG_ENV_UBI_VOLUME_REDUND: 4327 785881f7SJoe Hershberger 4328 785881f7SJoe Hershberger Define this to the name of another volume to store a second copy of 4329 785881f7SJoe Hershberger the environment in. This will enable redundant environments in UBI. 4330 785881f7SJoe Hershberger It is assumed that both volumes are in the same MTD partition. 4331 785881f7SJoe Hershberger 4332 2b74433fSJoe Hershberger - CONFIG_UBI_SILENCE_MSG 4333 2b74433fSJoe Hershberger - CONFIG_UBIFS_SILENCE_MSG 4334 2b74433fSJoe Hershberger 4335 2b74433fSJoe Hershberger You will probably want to define these to avoid a really noisy system 4336 2b74433fSJoe Hershberger when storing the env in UBI. 4337 2b74433fSJoe Hershberger 4338 d1db76f1SWu, Josh- CONFIG_ENV_IS_IN_FAT: 4339 d1db76f1SWu, Josh Define this if you want to use the FAT file system for the environment. 4340 d1db76f1SWu, Josh 4341 d1db76f1SWu, Josh - FAT_ENV_INTERFACE: 4342 d1db76f1SWu, Josh 4343 d1db76f1SWu, Josh Define this to a string that is the name of the block device. 4344 d1db76f1SWu, Josh 4345 d1db76f1SWu, Josh - FAT_ENV_DEV_AND_PART: 4346 d1db76f1SWu, Josh 4347 d1db76f1SWu, Josh Define this to a string to specify the partition of the device. It can 4348 d1db76f1SWu, Josh be as following: 4349 d1db76f1SWu, Josh 4350 d1db76f1SWu, Josh "D:P", "D:0", "D", "D:" or "D:auto" (D, P are integers. And P >= 1) 4351 d1db76f1SWu, Josh - "D:P": device D partition P. Error occurs if device D has no 4352 d1db76f1SWu, Josh partition table. 4353 d1db76f1SWu, Josh - "D:0": device D. 4354 d1db76f1SWu, Josh - "D" or "D:": device D partition 1 if device D has partition 4355 d1db76f1SWu, Josh table, or the whole device D if has no partition 4356 d1db76f1SWu, Josh table. 4357 d1db76f1SWu, Josh - "D:auto": first partition in device D with bootable flag set. 4358 d1db76f1SWu, Josh If none, first valid paratition in device D. If no 4359 d1db76f1SWu, Josh partition table then means device D. 4360 d1db76f1SWu, Josh 4361 d1db76f1SWu, Josh - FAT_ENV_FILE: 4362 d1db76f1SWu, Josh 4363 d1db76f1SWu, Josh It's a string of the FAT file name. This file use to store the 4364 d1db76f1SWu, Josh envrionment. 4365 d1db76f1SWu, Josh 4366 d1db76f1SWu, Josh - CONFIG_FAT_WRITE: 4367 d1db76f1SWu, Josh This should be defined. Otherwise it cannot save the envrionment file. 4368 d1db76f1SWu, Josh 4369 06e4ae5fSStephen Warren- CONFIG_ENV_IS_IN_MMC: 4370 06e4ae5fSStephen Warren 4371 06e4ae5fSStephen Warren Define this if you have an MMC device which you want to use for the 4372 06e4ae5fSStephen Warren environment. 4373 06e4ae5fSStephen Warren 4374 06e4ae5fSStephen Warren - CONFIG_SYS_MMC_ENV_DEV: 4375 06e4ae5fSStephen Warren 4376 06e4ae5fSStephen Warren Specifies which MMC device the environment is stored in. 4377 06e4ae5fSStephen Warren 4378 06e4ae5fSStephen Warren - CONFIG_SYS_MMC_ENV_PART (optional): 4379 06e4ae5fSStephen Warren 4380 06e4ae5fSStephen Warren Specifies which MMC partition the environment is stored in. If not 4381 06e4ae5fSStephen Warren set, defaults to partition 0, the user area. Common values might be 4382 06e4ae5fSStephen Warren 1 (first MMC boot partition), 2 (second MMC boot partition). 4383 06e4ae5fSStephen Warren 4384 06e4ae5fSStephen Warren - CONFIG_ENV_OFFSET: 4385 06e4ae5fSStephen Warren - CONFIG_ENV_SIZE: 4386 06e4ae5fSStephen Warren 4387 06e4ae5fSStephen Warren These two #defines specify the offset and size of the environment 4388 06e4ae5fSStephen Warren area within the specified MMC device. 4389 06e4ae5fSStephen Warren 4390 5c088ee8SStephen Warren If offset is positive (the usual case), it is treated as relative to 4391 5c088ee8SStephen Warren the start of the MMC partition. If offset is negative, it is treated 4392 5c088ee8SStephen Warren as relative to the end of the MMC partition. This can be useful if 4393 5c088ee8SStephen Warren your board may be fitted with different MMC devices, which have 4394 5c088ee8SStephen Warren different sizes for the MMC partitions, and you always want the 4395 5c088ee8SStephen Warren environment placed at the very end of the partition, to leave the 4396 5c088ee8SStephen Warren maximum possible space before it, to store other data. 4397 5c088ee8SStephen Warren 4398 06e4ae5fSStephen Warren These two values are in units of bytes, but must be aligned to an 4399 06e4ae5fSStephen Warren MMC sector boundary. 4400 06e4ae5fSStephen Warren 4401 06e4ae5fSStephen Warren - CONFIG_ENV_OFFSET_REDUND (optional): 4402 06e4ae5fSStephen Warren 4403 06e4ae5fSStephen Warren Specifies a second storage area, of CONFIG_ENV_SIZE size, used to 4404 06e4ae5fSStephen Warren hold a redundant copy of the environment data. This provides a 4405 06e4ae5fSStephen Warren valid backup copy in case the other copy is corrupted, e.g. due 4406 06e4ae5fSStephen Warren to a power failure during a "saveenv" operation. 4407 06e4ae5fSStephen Warren 4408 5c088ee8SStephen Warren This value may also be positive or negative; this is handled in the 4409 5c088ee8SStephen Warren same way as CONFIG_ENV_OFFSET. 4410 5c088ee8SStephen Warren 4411 06e4ae5fSStephen Warren This value is also in units of bytes, but must also be aligned to 4412 06e4ae5fSStephen Warren an MMC sector boundary. 4413 06e4ae5fSStephen Warren 4414 06e4ae5fSStephen Warren - CONFIG_ENV_SIZE_REDUND (optional): 4415 06e4ae5fSStephen Warren 4416 06e4ae5fSStephen Warren This value need not be set, even when CONFIG_ENV_OFFSET_REDUND is 4417 06e4ae5fSStephen Warren set. If this value is set, it must be set to the same value as 4418 06e4ae5fSStephen Warren CONFIG_ENV_SIZE. 4419 06e4ae5fSStephen Warren 4420 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPI_INIT_OFFSET 4421 c609719bSwdenk 4422 c609719bSwdenk Defines offset to the initial SPI buffer area in DPRAM. The 4423 c609719bSwdenk area is used at an early stage (ROM part) if the environment 4424 c609719bSwdenk is configured to reside in the SPI EEPROM: We need a 520 byte 4425 c609719bSwdenk scratch DPRAM area. It is used between the two initialization 4426 c609719bSwdenk calls (spi_init_f() and spi_init_r()). A value of 0xB00 seems 4427 c609719bSwdenk to be a good choice since it makes it far enough from the 4428 c609719bSwdenk start of the data area as well as from the stack pointer. 4429 c609719bSwdenk 4430 e881cb56SBruce AdlerPlease note that the environment is read-only until the monitor 4431 c609719bSwdenkhas been relocated to RAM and a RAM copy of the environment has been 4432 cdb74977SWolfgang Denkcreated; also, when using EEPROM you will have to use getenv_f() 4433 c609719bSwdenkuntil then to read environment variables. 4434 c609719bSwdenk 4435 85ec0bccSwdenkThe environment is protected by a CRC32 checksum. Before the monitor 4436 85ec0bccSwdenkis relocated into RAM, as a result of a bad CRC you will be working 4437 85ec0bccSwdenkwith the compiled-in default environment - *silently*!!! [This is 4438 85ec0bccSwdenknecessary, because the first environment variable we need is the 4439 85ec0bccSwdenk"baudrate" setting for the console - if we have a bad CRC, we don't 4440 85ec0bccSwdenkhave any device yet where we could complain.] 4441 c609719bSwdenk 4442 c609719bSwdenkNote: once the monitor has been relocated, then it will complain if 4443 c609719bSwdenkthe default environment is used; a new CRC is computed as soon as you 4444 85ec0bccSwdenkuse the "saveenv" command to store a valid environment. 4445 c609719bSwdenk 4446 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FAULT_ECHO_LINK_DOWN: 4447 fc3e2165Swdenk Echo the inverted Ethernet link state to the fault LED. 4448 fc3e2165Swdenk 4449 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD Note: If this option is active, then CONFIG_SYS_FAULT_MII_ADDR 4450 fc3e2165Swdenk also needs to be defined. 4451 fc3e2165Swdenk 4452 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FAULT_MII_ADDR: 4453 fc3e2165Swdenk MII address of the PHY to check for the Ethernet link state. 4454 c609719bSwdenk 4455 f5675aa5SRon Madrid- CONFIG_NS16550_MIN_FUNCTIONS: 4456 f5675aa5SRon Madrid Define this if you desire to only have use of the NS16550_init 4457 f5675aa5SRon Madrid and NS16550_putc functions for the serial driver located at 4458 f5675aa5SRon Madrid drivers/serial/ns16550.c. This option is useful for saving 4459 f5675aa5SRon Madrid space for already greatly restricted images, including but not 4460 f5675aa5SRon Madrid limited to NAND_SPL configurations. 4461 f5675aa5SRon Madrid 4462 b2b92f53SSimon Glass- CONFIG_DISPLAY_BOARDINFO 4463 b2b92f53SSimon Glass Display information about the board that U-Boot is running on 4464 b2b92f53SSimon Glass when U-Boot starts up. The board function checkboard() is called 4465 b2b92f53SSimon Glass to do this. 4466 b2b92f53SSimon Glass 4467 e2e3e2b1SSimon Glass- CONFIG_DISPLAY_BOARDINFO_LATE 4468 e2e3e2b1SSimon Glass Similar to the previous option, but display this information 4469 e2e3e2b1SSimon Glass later, once stdio is running and output goes to the LCD, if 4470 e2e3e2b1SSimon Glass present. 4471 e2e3e2b1SSimon Glass 4472 feb85801SSascha Silbe- CONFIG_BOARD_SIZE_LIMIT: 4473 feb85801SSascha Silbe Maximum size of the U-Boot image. When defined, the 4474 feb85801SSascha Silbe build system checks that the actual size does not 4475 feb85801SSascha Silbe exceed it. 4476 feb85801SSascha Silbe 4477 c609719bSwdenkLow Level (hardware related) configuration options: 4478 dc7c9a1aSwdenk--------------------------------------------------- 4479 c609719bSwdenk 4480 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CACHELINE_SIZE: 4481 c609719bSwdenk Cache Line Size of the CPU. 4482 c609719bSwdenk 4483 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DEFAULT_IMMR: 4484 c609719bSwdenk Default address of the IMMR after system reset. 4485 2535d602Swdenk 4486 2535d602Swdenk Needed on some 8260 systems (MPC8260ADS, PQ2FADS-ZU, 4487 2535d602Swdenk and RPXsuper) to be able to adjust the position of 4488 2535d602Swdenk the IMMR register after a reset. 4489 c609719bSwdenk 4490 e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_DEFAULT: 4491 e46fedfeSTimur Tabi Default (power-on reset) physical address of CCSR on Freescale 4492 e46fedfeSTimur Tabi PowerPC SOCs. 4493 e46fedfeSTimur Tabi 4494 e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR: 4495 e46fedfeSTimur Tabi Virtual address of CCSR. On a 32-bit build, this is typically 4496 e46fedfeSTimur Tabi the same value as CONFIG_SYS_CCSRBAR_DEFAULT. 4497 e46fedfeSTimur Tabi 4498 e46fedfeSTimur Tabi CONFIG_SYS_DEFAULT_IMMR must also be set to this value, 4499 e46fedfeSTimur Tabi for cross-platform code that uses that macro instead. 4500 e46fedfeSTimur Tabi 4501 e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS: 4502 e46fedfeSTimur Tabi Physical address of CCSR. CCSR can be relocated to a new 4503 e46fedfeSTimur Tabi physical address, if desired. In this case, this macro should 4504 e46fedfeSTimur Tabi be set to that address. Otherwise, it should be set to the 4505 e46fedfeSTimur Tabi same value as CONFIG_SYS_CCSRBAR_DEFAULT. For example, CCSR 4506 e46fedfeSTimur Tabi is typically relocated on 36-bit builds. It is recommended 4507 e46fedfeSTimur Tabi that this macro be defined via the _HIGH and _LOW macros: 4508 e46fedfeSTimur Tabi 4509 e46fedfeSTimur Tabi #define CONFIG_SYS_CCSRBAR_PHYS ((CONFIG_SYS_CCSRBAR_PHYS_HIGH 4510 e46fedfeSTimur Tabi * 1ull) << 32 | CONFIG_SYS_CCSRBAR_PHYS_LOW) 4511 e46fedfeSTimur Tabi 4512 e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS_HIGH: 4513 e46fedfeSTimur Tabi Bits 33-36 of CONFIG_SYS_CCSRBAR_PHYS. This value is typically 4514 e46fedfeSTimur Tabi either 0 (32-bit build) or 0xF (36-bit build). This macro is 4515 e46fedfeSTimur Tabi used in assembly code, so it must not contain typecasts or 4516 e46fedfeSTimur Tabi integer size suffixes (e.g. "ULL"). 4517 e46fedfeSTimur Tabi 4518 e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS_LOW: 4519 e46fedfeSTimur Tabi Lower 32-bits of CONFIG_SYS_CCSRBAR_PHYS. This macro is 4520 e46fedfeSTimur Tabi used in assembly code, so it must not contain typecasts or 4521 e46fedfeSTimur Tabi integer size suffixes (e.g. "ULL"). 4522 e46fedfeSTimur Tabi 4523 e46fedfeSTimur Tabi- CONFIG_SYS_CCSR_DO_NOT_RELOCATE: 4524 e46fedfeSTimur Tabi If this macro is defined, then CONFIG_SYS_CCSRBAR_PHYS will be 4525 e46fedfeSTimur Tabi forced to a value that ensures that CCSR is not relocated. 4526 e46fedfeSTimur Tabi 4527 7f6c2cbcSwdenk- Floppy Disk Support: 4528 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FDC_DRIVE_NUMBER 4529 7f6c2cbcSwdenk 4530 7f6c2cbcSwdenk the default drive number (default value 0) 4531 7f6c2cbcSwdenk 4532 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_ISA_IO_STRIDE 4533 7f6c2cbcSwdenk 4534 11ccc33fSMarcel Ziswiler defines the spacing between FDC chipset registers 4535 7f6c2cbcSwdenk (default value 1) 4536 7f6c2cbcSwdenk 4537 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_ISA_IO_OFFSET 4538 7f6c2cbcSwdenk 4539 7f6c2cbcSwdenk defines the offset of register from address. It 4540 7f6c2cbcSwdenk depends on which part of the data bus is connected to 4541 11ccc33fSMarcel Ziswiler the FDC chipset. (default value 0) 4542 7f6c2cbcSwdenk 4543 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD If CONFIG_SYS_ISA_IO_STRIDE CONFIG_SYS_ISA_IO_OFFSET and 4544 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FDC_DRIVE_NUMBER are undefined, they take their 4545 7f6c2cbcSwdenk default value. 4546 7f6c2cbcSwdenk 4547 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD if CONFIG_SYS_FDC_HW_INIT is defined, then the function 4548 7f6c2cbcSwdenk fdc_hw_init() is called at the beginning of the FDC 4549 7f6c2cbcSwdenk setup. fdc_hw_init() must be provided by the board 4550 7f6c2cbcSwdenk source code. It is used to make hardware dependant 4551 7f6c2cbcSwdenk initializations. 4552 7f6c2cbcSwdenk 4553 0abddf82SMacpaul Lin- CONFIG_IDE_AHB: 4554 0abddf82SMacpaul Lin Most IDE controllers were designed to be connected with PCI 4555 0abddf82SMacpaul Lin interface. Only few of them were designed for AHB interface. 4556 0abddf82SMacpaul Lin When software is doing ATA command and data transfer to 4557 0abddf82SMacpaul Lin IDE devices through IDE-AHB controller, some additional 4558 0abddf82SMacpaul Lin registers accessing to these kind of IDE-AHB controller 4559 0abddf82SMacpaul Lin is requierd. 4560 0abddf82SMacpaul Lin 4561 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_IMMR: Physical address of the Internal Memory. 4562 25d6712aSwdenk DO NOT CHANGE unless you know exactly what you're 4563 25d6712aSwdenk doing! (11-4) [MPC8xx/82xx systems only] 4564 c609719bSwdenk 4565 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_INIT_RAM_ADDR: 4566 c609719bSwdenk 4567 7152b1d0Swdenk Start address of memory area that can be used for 4568 c609719bSwdenk initial data and stack; please note that this must be 4569 c609719bSwdenk writable memory that is working WITHOUT special 4570 c609719bSwdenk initialization, i. e. you CANNOT use normal RAM which 4571 c609719bSwdenk will become available only after programming the 4572 c609719bSwdenk memory controller and running certain initialization 4573 c609719bSwdenk sequences. 4574 c609719bSwdenk 4575 c609719bSwdenk U-Boot uses the following memory types: 4576 c609719bSwdenk - MPC8xx and MPC8260: IMMR (internal memory of the CPU) 4577 c609719bSwdenk - MPC824X: data cache 4578 c609719bSwdenk - PPC4xx: data cache 4579 c609719bSwdenk 4580 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_GBL_DATA_OFFSET: 4581 c609719bSwdenk 4582 c609719bSwdenk Offset of the initial data structure in the memory 4583 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD area defined by CONFIG_SYS_INIT_RAM_ADDR. Usually 4584 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_GBL_DATA_OFFSET is chosen such that the initial 4585 c609719bSwdenk data is located at the end of the available space 4586 553f0982SWolfgang Denk (sometimes written as (CONFIG_SYS_INIT_RAM_SIZE - 4587 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_DATA_SIZE), and the initial stack is just 4588 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD below that area (growing from (CONFIG_SYS_INIT_RAM_ADDR + 4589 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_GBL_DATA_OFFSET) downward. 4590 c609719bSwdenk 4591 c609719bSwdenk Note: 4592 c609719bSwdenk On the MPC824X (or other systems that use the data 4593 c609719bSwdenk cache for initial memory) the address chosen for 4594 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_RAM_ADDR is basically arbitrary - it must 4595 c609719bSwdenk point to an otherwise UNUSED address space between 4596 c609719bSwdenk the top of RAM and the start of the PCI space. 4597 c609719bSwdenk 4598 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SIUMCR: SIU Module Configuration (11-6) 4599 c609719bSwdenk 4600 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SYPCR: System Protection Control (11-9) 4601 c609719bSwdenk 4602 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_TBSCR: Time Base Status and Control (11-26) 4603 c609719bSwdenk 4604 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PISCR: Periodic Interrupt Status and Control (11-31) 4605 c609719bSwdenk 4606 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PLPRCR: PLL, Low-Power, and Reset Control Register (15-30) 4607 c609719bSwdenk 4608 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SCCR: System Clock and reset Control Register (15-27) 4609 c609719bSwdenk 4610 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_OR_TIMING_SDRAM: 4611 c609719bSwdenk SDRAM timing 4612 c609719bSwdenk 4613 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAMR_PTA: 4614 c609719bSwdenk periodic timer for refresh 4615 c609719bSwdenk 4616 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DER: Debug Event Register (37-47) 4617 c609719bSwdenk 4618 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- FLASH_BASE0_PRELIM, FLASH_BASE1_PRELIM, CONFIG_SYS_REMAP_OR_AM, 4619 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PRELIM_OR_AM, CONFIG_SYS_OR_TIMING_FLASH, CONFIG_SYS_OR0_REMAP, 4620 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR0_PRELIM, CONFIG_SYS_BR0_PRELIM, CONFIG_SYS_OR1_REMAP, CONFIG_SYS_OR1_PRELIM, 4621 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BR1_PRELIM: 4622 c609719bSwdenk Memory Controller Definitions: BR0/1 and OR0/1 (FLASH) 4623 c609719bSwdenk 4624 c609719bSwdenk- SDRAM_BASE2_PRELIM, SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE, 4625 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR_TIMING_SDRAM, CONFIG_SYS_OR2_PRELIM, CONFIG_SYS_BR2_PRELIM, 4626 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR3_PRELIM, CONFIG_SYS_BR3_PRELIM: 4627 c609719bSwdenk Memory Controller Definitions: BR2/3 and OR2/3 (SDRAM) 4628 c609719bSwdenk 4629 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAMR_PTA, CONFIG_SYS_MPTPR_2BK_4K, CONFIG_SYS_MPTPR_1BK_4K, CONFIG_SYS_MPTPR_2BK_8K, 4630 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MPTPR_1BK_8K, CONFIG_SYS_MAMR_8COL, CONFIG_SYS_MAMR_9COL: 4631 c609719bSwdenk Machine Mode Register and Memory Periodic Timer 4632 c609719bSwdenk Prescaler definitions (SDRAM timing) 4633 c609719bSwdenk 4634 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_I2C_UCODE_PATCH, CONFIG_SYS_I2C_DPMEM_OFFSET [0x1FC0]: 4635 c609719bSwdenk enable I2C microcode relocation patch (MPC8xx); 4636 c609719bSwdenk define relocation offset in DPRAM [DSP2] 4637 c609719bSwdenk 4638 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SMC_UCODE_PATCH, CONFIG_SYS_SMC_DPMEM_OFFSET [0x1FC0]: 4639 b423d055SHeiko Schocher enable SMC microcode relocation patch (MPC8xx); 4640 b423d055SHeiko Schocher define relocation offset in DPRAM [SMC1] 4641 b423d055SHeiko Schocher 4642 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPI_UCODE_PATCH, CONFIG_SYS_SPI_DPMEM_OFFSET [0x1FC0]: 4643 c609719bSwdenk enable SPI microcode relocation patch (MPC8xx); 4644 c609719bSwdenk define relocation offset in DPRAM [SCC4] 4645 c609719bSwdenk 4646 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_USE_OSCCLK: 4647 c609719bSwdenk Use OSCM clock mode on MBX8xx board. Be careful, 4648 c609719bSwdenk wrong setting might damage your board. Read 4649 c609719bSwdenk doc/README.MBX before setting this variable! 4650 c609719bSwdenk 4651 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CPM_POST_WORD_ADDR: (MPC8xx, MPC8260 only) 4652 ea909b76Swdenk Offset of the bootmode word in DPRAM used by post 4653 ea909b76Swdenk (Power On Self Tests). This definition overrides 4654 ea909b76Swdenk #define'd default value in commproc.h resp. 4655 ea909b76Swdenk cpm_8260.h. 4656 ea909b76Swdenk 4657 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PCI_SLV_MEM_LOCAL, CONFIG_SYS_PCI_SLV_MEM_BUS, CONFIG_SYS_PICMR0_MASK_ATTRIB, 4658 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR0_LOCAL, CONFIG_SYS_PCIMSK0_MASK, CONFIG_SYS_PCI_MSTR1_LOCAL, 4659 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCIMSK1_MASK, CONFIG_SYS_PCI_MSTR_MEM_LOCAL, CONFIG_SYS_PCI_MSTR_MEM_BUS, 4660 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CPU_PCI_MEM_START, CONFIG_SYS_PCI_MSTR_MEM_SIZE, CONFIG_SYS_POCMR0_MASK_ATTRIB, 4661 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_MEMIO_LOCAL, CONFIG_SYS_PCI_MSTR_MEMIO_BUS, CPU_PCI_MEMIO_START, 4662 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_MEMIO_SIZE, CONFIG_SYS_POCMR1_MASK_ATTRIB, CONFIG_SYS_PCI_MSTR_IO_LOCAL, 4663 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_IO_BUS, CONFIG_SYS_CPU_PCI_IO_START, CONFIG_SYS_PCI_MSTR_IO_SIZE, 4664 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_POCMR2_MASK_ATTRIB: (MPC826x only) 4665 a47a12beSStefan Roese Overrides the default PCI memory map in arch/powerpc/cpu/mpc8260/pci.c if set. 4666 5d232d0eSwdenk 4667 9cacf4fcSDirk Eibach- CONFIG_PCI_DISABLE_PCIE: 4668 9cacf4fcSDirk Eibach Disable PCI-Express on systems where it is supported but not 4669 9cacf4fcSDirk Eibach required. 4670 9cacf4fcSDirk Eibach 4671 69fd2d3bSAndrew Sharp- CONFIG_PCI_ENUM_ONLY 4672 69fd2d3bSAndrew Sharp Only scan through and get the devices on the busses. 4673 69fd2d3bSAndrew Sharp Don't do any setup work, presumably because someone or 4674 69fd2d3bSAndrew Sharp something has already done it, and we don't need to do it 4675 69fd2d3bSAndrew Sharp a second time. Useful for platforms that are pre-booted 4676 69fd2d3bSAndrew Sharp by coreboot or similar. 4677 69fd2d3bSAndrew Sharp 4678 842033e6SGabor Juhos- CONFIG_PCI_INDIRECT_BRIDGE: 4679 842033e6SGabor Juhos Enable support for indirect PCI bridges. 4680 842033e6SGabor Juhos 4681 a09b9b68SKumar Gala- CONFIG_SYS_SRIO: 4682 a09b9b68SKumar Gala Chip has SRIO or not 4683 a09b9b68SKumar Gala 4684 a09b9b68SKumar Gala- CONFIG_SRIO1: 4685 a09b9b68SKumar Gala Board has SRIO 1 port available 4686 a09b9b68SKumar Gala 4687 a09b9b68SKumar Gala- CONFIG_SRIO2: 4688 a09b9b68SKumar Gala Board has SRIO 2 port available 4689 a09b9b68SKumar Gala 4690 c8b28152SLiu Gang- CONFIG_SRIO_PCIE_BOOT_MASTER 4691 c8b28152SLiu Gang Board can support master function for Boot from SRIO and PCIE 4692 c8b28152SLiu Gang 4693 a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_VIRT: 4694 a09b9b68SKumar Gala Virtual Address of SRIO port 'n' memory region 4695 a09b9b68SKumar Gala 4696 a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_PHYS: 4697 a09b9b68SKumar Gala Physical Address of SRIO port 'n' memory region 4698 a09b9b68SKumar Gala 4699 a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_SIZE: 4700 a09b9b68SKumar Gala Size of SRIO port 'n' memory region 4701 a09b9b68SKumar Gala 4702 66bd1846SFabio Estevam- CONFIG_SYS_NAND_BUSWIDTH_16BIT 4703 66bd1846SFabio Estevam Defined to tell the NAND controller that the NAND chip is using 4704 66bd1846SFabio Estevam a 16 bit bus. 4705 66bd1846SFabio Estevam Not all NAND drivers use this symbol. 4706 a430e916SFabio Estevam Example of drivers that use it: 4707 66bd1846SFabio Estevam - drivers/mtd/nand/ndfc.c 4708 a430e916SFabio Estevam - drivers/mtd/nand/mxc_nand.c 4709 eced4626SAlex Waterman 4710 eced4626SAlex Waterman- CONFIG_SYS_NDFC_EBC0_CFG 4711 eced4626SAlex Waterman Sets the EBC0_CFG register for the NDFC. If not defined 4712 eced4626SAlex Waterman a default value will be used. 4713 eced4626SAlex Waterman 4714 bb99ad6dSBen Warren- CONFIG_SPD_EEPROM 4715 218ca724SWolfgang Denk Get DDR timing information from an I2C EEPROM. Common 4716 218ca724SWolfgang Denk with pluggable memory modules such as SODIMMs 4717 218ca724SWolfgang Denk 4718 bb99ad6dSBen Warren SPD_EEPROM_ADDRESS 4719 bb99ad6dSBen Warren I2C address of the SPD EEPROM 4720 bb99ad6dSBen Warren 4721 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPD_BUS_NUM 4722 218ca724SWolfgang Denk If SPD EEPROM is on an I2C bus other than the first 4723 218ca724SWolfgang Denk one, specify here. Note that the value must resolve 4724 218ca724SWolfgang Denk to something your driver can deal with. 4725 bb99ad6dSBen Warren 4726 1b3e3c4fSYork Sun- CONFIG_SYS_DDR_RAW_TIMING 4727 1b3e3c4fSYork Sun Get DDR timing information from other than SPD. Common with 4728 1b3e3c4fSYork Sun soldered DDR chips onboard without SPD. DDR raw timing 4729 1b3e3c4fSYork Sun parameters are extracted from datasheet and hard-coded into 4730 1b3e3c4fSYork Sun header files or board specific files. 4731 1b3e3c4fSYork Sun 4732 6f5e1dc5SYork Sun- CONFIG_FSL_DDR_INTERACTIVE 4733 6f5e1dc5SYork Sun Enable interactive DDR debugging. See doc/README.fsl-ddr. 4734 6f5e1dc5SYork Sun 4735 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_83XX_DDR_USES_CS0 4736 218ca724SWolfgang Denk Only for 83xx systems. If specified, then DDR should 4737 218ca724SWolfgang Denk be configured using CS0 and CS1 instead of CS2 and CS3. 4738 2ad6b513STimur Tabi 4739 c26e454dSwdenk- CONFIG_ETHER_ON_FEC[12] 4740 c26e454dSwdenk Define to enable FEC[12] on a 8xx series processor. 4741 c26e454dSwdenk 4742 c26e454dSwdenk- CONFIG_FEC[12]_PHY 4743 c26e454dSwdenk Define to the hardcoded PHY address which corresponds 4744 6e592385Swdenk to the given FEC; i. e. 4745 c26e454dSwdenk #define CONFIG_FEC1_PHY 4 4746 c26e454dSwdenk means that the PHY with address 4 is connected to FEC1 4747 c26e454dSwdenk 4748 c26e454dSwdenk When set to -1, means to probe for first available. 4749 c26e454dSwdenk 4750 c26e454dSwdenk- CONFIG_FEC[12]_PHY_NORXERR 4751 c26e454dSwdenk The PHY does not have a RXERR line (RMII only). 4752 c26e454dSwdenk (so program the FEC to ignore it). 4753 c26e454dSwdenk 4754 c26e454dSwdenk- CONFIG_RMII 4755 c26e454dSwdenk Enable RMII mode for all FECs. 4756 c26e454dSwdenk Note that this is a global option, we can't 4757 c26e454dSwdenk have one FEC in standard MII mode and another in RMII mode. 4758 c26e454dSwdenk 4759 5cf91d6bSwdenk- CONFIG_CRC32_VERIFY 4760 5cf91d6bSwdenk Add a verify option to the crc32 command. 4761 5cf91d6bSwdenk The syntax is: 4762 5cf91d6bSwdenk 4763 5cf91d6bSwdenk => crc32 -v <address> <count> <crc32> 4764 5cf91d6bSwdenk 4765 5cf91d6bSwdenk Where address/count indicate a memory area 4766 5cf91d6bSwdenk and crc32 is the correct crc32 which the 4767 5cf91d6bSwdenk area should have. 4768 5cf91d6bSwdenk 4769 56523f12Swdenk- CONFIG_LOOPW 4770 56523f12Swdenk Add the "loopw" memory command. This only takes effect if 4771 602ad3b3SJon Loeliger the memory commands are activated globally (CONFIG_CMD_MEM). 4772 56523f12Swdenk 4773 7b466641Sstroese- CONFIG_MX_CYCLIC 4774 7b466641Sstroese Add the "mdc" and "mwc" memory commands. These are cyclic 4775 7b466641Sstroese "md/mw" commands. 4776 7b466641Sstroese Examples: 4777 7b466641Sstroese 4778 7b466641Sstroese => mdc.b 10 4 500 4779 7b466641Sstroese This command will print 4 bytes (10,11,12,13) each 500 ms. 4780 7b466641Sstroese 4781 7b466641Sstroese => mwc.l 100 12345678 10 4782 7b466641Sstroese This command will write 12345678 to address 100 all 10 ms. 4783 7b466641Sstroese 4784 7b466641Sstroese This only takes effect if the memory commands are activated 4785 602ad3b3SJon Loeliger globally (CONFIG_CMD_MEM). 4786 7b466641Sstroese 4787 8aa1a2d1Swdenk- CONFIG_SKIP_LOWLEVEL_INIT 4788 afc1ce82SMacpaul Lin [ARM, NDS32, MIPS only] If this variable is defined, then certain 4789 e03f3169SWolfgang Denk low level initializations (like setting up the memory 4790 e03f3169SWolfgang Denk controller) are omitted and/or U-Boot does not 4791 e03f3169SWolfgang Denk relocate itself into RAM. 4792 8aa1a2d1Swdenk 4793 e03f3169SWolfgang Denk Normally this variable MUST NOT be defined. The only 4794 e03f3169SWolfgang Denk exception is when U-Boot is loaded (to RAM) by some 4795 e03f3169SWolfgang Denk other boot loader or by a debugger which performs 4796 e03f3169SWolfgang Denk these initializations itself. 4797 8aa1a2d1Swdenk 4798 401bb30bSAneesh V- CONFIG_SPL_BUILD 4799 df81238bSMagnus Lilja Modifies the behaviour of start.S when compiling a loader 4800 df81238bSMagnus Lilja that is executed before the actual U-Boot. E.g. when 4801 df81238bSMagnus Lilja compiling a NAND SPL. 4802 400558b5Swdenk 4803 3aa29de0SYing Zhang- CONFIG_TPL_BUILD 4804 3aa29de0SYing Zhang Modifies the behaviour of start.S when compiling a loader 4805 3aa29de0SYing Zhang that is executed after the SPL and before the actual U-Boot. 4806 3aa29de0SYing Zhang It is loaded by the SPL. 4807 3aa29de0SYing Zhang 4808 5df572f0SYing Zhang- CONFIG_SYS_MPC85XX_NO_RESETVEC 4809 5df572f0SYing Zhang Only for 85xx systems. If this variable is specified, the section 4810 5df572f0SYing Zhang .resetvec is not kept and the section .bootpg is placed in the 4811 5df572f0SYing Zhang previous 4k of the .text section. 4812 5df572f0SYing Zhang 4813 4213fc29SSimon Glass- CONFIG_ARCH_MAP_SYSMEM 4814 4213fc29SSimon Glass Generally U-Boot (and in particular the md command) uses 4815 4213fc29SSimon Glass effective address. It is therefore not necessary to regard 4816 4213fc29SSimon Glass U-Boot address as virtual addresses that need to be translated 4817 4213fc29SSimon Glass to physical addresses. However, sandbox requires this, since 4818 4213fc29SSimon Glass it maintains its own little RAM buffer which contains all 4819 4213fc29SSimon Glass addressable memory. This option causes some memory accesses 4820 4213fc29SSimon Glass to be mapped through map_sysmem() / unmap_sysmem(). 4821 4213fc29SSimon Glass 4822 d8834a13SMatthias Weisser- CONFIG_USE_ARCH_MEMCPY 4823 d8834a13SMatthias Weisser CONFIG_USE_ARCH_MEMSET 4824 d8834a13SMatthias Weisser If these options are used a optimized version of memcpy/memset will 4825 d8834a13SMatthias Weisser be used if available. These functions may be faster under some 4826 d8834a13SMatthias Weisser conditions but may increase the binary size. 4827 d8834a13SMatthias Weisser 4828 588a13f7SSimon Glass- CONFIG_X86_RESET_VECTOR 4829 588a13f7SSimon Glass If defined, the x86 reset vector code is included. This is not 4830 588a13f7SSimon Glass needed when U-Boot is running from Coreboot. 4831 b16f521aSGabe Black 4832 fc33705eSMark Jackson- CONFIG_SYS_MPUCLK 4833 fc33705eSMark Jackson Defines the MPU clock speed (in MHz). 4834 fc33705eSMark Jackson 4835 fc33705eSMark Jackson NOTE : currently only supported on AM335x platforms. 4836 5b5ece9eSGabe Black 4837 16678eb4SHeiko Schocher- CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC: 4838 16678eb4SHeiko Schocher Enables the RTC32K OSC on AM33xx based plattforms 4839 16678eb4SHeiko Schocher 4840 999d7d32SKaricheri, Muralidharan- CONFIG_SYS_NAND_NO_SUBPAGE_WRITE 4841 999d7d32SKaricheri, Muralidharan Option to disable subpage write in NAND driver 4842 999d7d32SKaricheri, Muralidharan driver that uses this: 4843 999d7d32SKaricheri, Muralidharan drivers/mtd/nand/davinci_nand.c 4844 999d7d32SKaricheri, Muralidharan 4845 f2717b47STimur TabiFreescale QE/FMAN Firmware Support: 4846 f2717b47STimur Tabi----------------------------------- 4847 f2717b47STimur Tabi 4848 f2717b47STimur TabiThe Freescale QUICCEngine (QE) and Frame Manager (FMAN) both support the 4849 f2717b47STimur Tabiloading of "firmware", which is encoded in the QE firmware binary format. 4850 f2717b47STimur TabiThis firmware often needs to be loaded during U-Boot booting, so macros 4851 f2717b47STimur Tabiare used to identify the storage device (NOR flash, SPI, etc) and the address 4852 f2717b47STimur Tabiwithin that device. 4853 f2717b47STimur Tabi 4854 dcf1d774SZhao Qiang- CONFIG_SYS_FMAN_FW_ADDR 4855 dcf1d774SZhao Qiang The address in the storage device where the FMAN microcode is located. The 4856 dcf1d774SZhao Qiang meaning of this address depends on which CONFIG_SYS_QE_FW_IN_xxx macro 4857 dcf1d774SZhao Qiang is also specified. 4858 dcf1d774SZhao Qiang 4859 dcf1d774SZhao Qiang- CONFIG_SYS_QE_FW_ADDR 4860 dcf1d774SZhao Qiang The address in the storage device where the QE microcode is located. The 4861 f2717b47STimur Tabi meaning of this address depends on which CONFIG_SYS_QE_FW_IN_xxx macro 4862 f2717b47STimur Tabi is also specified. 4863 f2717b47STimur Tabi 4864 f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_LENGTH 4865 f2717b47STimur Tabi The maximum possible size of the firmware. The firmware binary format 4866 f2717b47STimur Tabi has a field that specifies the actual size of the firmware, but it 4867 f2717b47STimur Tabi might not be possible to read any part of the firmware unless some 4868 f2717b47STimur Tabi local storage is allocated to hold the entire firmware first. 4869 f2717b47STimur Tabi 4870 f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_NOR 4871 f2717b47STimur Tabi Specifies that QE/FMAN firmware is located in NOR flash, mapped as 4872 f2717b47STimur Tabi normal addressable memory via the LBC. CONFIG_SYS_FMAN_FW_ADDR is the 4873 f2717b47STimur Tabi virtual address in NOR flash. 4874 f2717b47STimur Tabi 4875 f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_NAND 4876 f2717b47STimur Tabi Specifies that QE/FMAN firmware is located in NAND flash. 4877 f2717b47STimur Tabi CONFIG_SYS_FMAN_FW_ADDR is the offset within NAND flash. 4878 f2717b47STimur Tabi 4879 f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_MMC 4880 f2717b47STimur Tabi Specifies that QE/FMAN firmware is located on the primary SD/MMC 4881 f2717b47STimur Tabi device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device. 4882 f2717b47STimur Tabi 4883 f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_SPIFLASH 4884 f2717b47STimur Tabi Specifies that QE/FMAN firmware is located on the primary SPI 4885 f2717b47STimur Tabi device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device. 4886 f2717b47STimur Tabi 4887 292dc6c5SLiu Gang- CONFIG_SYS_QE_FMAN_FW_IN_REMOTE 4888 292dc6c5SLiu Gang Specifies that QE/FMAN firmware is located in the remote (master) 4889 292dc6c5SLiu Gang memory space. CONFIG_SYS_FMAN_FW_ADDR is a virtual address which 4890 fc54c7faSLiu Gang can be mapped from slave TLB->slave LAW->slave SRIO or PCIE outbound 4891 fc54c7faSLiu Gang window->master inbound window->master LAW->the ucode address in 4892 fc54c7faSLiu Gang master's memory space. 4893 f2717b47STimur Tabi 4894 b940ca64SJ. German RiveraFreescale Layerscape Management Complex Firmware Support: 4895 b940ca64SJ. German Rivera--------------------------------------------------------- 4896 b940ca64SJ. German RiveraThe Freescale Layerscape Management Complex (MC) supports the loading of 4897 b940ca64SJ. German Rivera"firmware". 4898 b940ca64SJ. German RiveraThis firmware often needs to be loaded during U-Boot booting, so macros 4899 b940ca64SJ. German Riveraare used to identify the storage device (NOR flash, SPI, etc) and the address 4900 b940ca64SJ. German Riverawithin that device. 4901 b940ca64SJ. German Rivera 4902 b940ca64SJ. German Rivera- CONFIG_FSL_MC_ENET 4903 b940ca64SJ. German Rivera Enable the MC driver for Layerscape SoCs. 4904 b940ca64SJ. German Rivera 4905 b940ca64SJ. German Rivera- CONFIG_SYS_LS_MC_FW_ADDR 4906 b940ca64SJ. German Rivera The address in the storage device where the firmware is located. The 4907 b940ca64SJ. German Rivera meaning of this address depends on which CONFIG_SYS_LS_MC_FW_IN_xxx macro 4908 b940ca64SJ. German Rivera is also specified. 4909 b940ca64SJ. German Rivera 4910 b940ca64SJ. German Rivera- CONFIG_SYS_LS_MC_FW_LENGTH 4911 b940ca64SJ. German Rivera The maximum possible size of the firmware. The firmware binary format 4912 b940ca64SJ. German Rivera has a field that specifies the actual size of the firmware, but it 4913 b940ca64SJ. German Rivera might not be possible to read any part of the firmware unless some 4914 b940ca64SJ. German Rivera local storage is allocated to hold the entire firmware first. 4915 b940ca64SJ. German Rivera 4916 b940ca64SJ. German Rivera- CONFIG_SYS_LS_MC_FW_IN_NOR 4917 b940ca64SJ. German Rivera Specifies that MC firmware is located in NOR flash, mapped as 4918 b940ca64SJ. German Rivera normal addressable memory via the LBC. CONFIG_SYS_LS_MC_FW_ADDR is the 4919 b940ca64SJ. German Rivera virtual address in NOR flash. 4920 b940ca64SJ. German Rivera 4921 c609719bSwdenkBuilding the Software: 4922 c609719bSwdenk====================== 4923 c609719bSwdenk 4924 218ca724SWolfgang DenkBuilding U-Boot has been tested in several native build environments 4925 218ca724SWolfgang Denkand in many different cross environments. Of course we cannot support 4926 218ca724SWolfgang Denkall possibly existing versions of cross development tools in all 4927 218ca724SWolfgang Denk(potentially obsolete) versions. In case of tool chain problems we 4928 218ca724SWolfgang Denkrecommend to use the ELDK (see http://www.denx.de/wiki/DULG/ELDK) 4929 218ca724SWolfgang Denkwhich is extensively used to build and test U-Boot. 4930 c609719bSwdenk 4931 218ca724SWolfgang DenkIf you are not using a native environment, it is assumed that you 4932 218ca724SWolfgang Denkhave GNU cross compiling tools available in your path. In this case, 4933 218ca724SWolfgang Denkyou must set the environment variable CROSS_COMPILE in your shell. 4934 218ca724SWolfgang DenkNote that no changes to the Makefile or any other source files are 4935 218ca724SWolfgang Denknecessary. For example using the ELDK on a 4xx CPU, please enter: 4936 c609719bSwdenk 4937 218ca724SWolfgang Denk $ CROSS_COMPILE=ppc_4xx- 4938 218ca724SWolfgang Denk $ export CROSS_COMPILE 4939 c609719bSwdenk 4940 2f8d396bSPeter TyserNote: If you wish to generate Windows versions of the utilities in 4941 2f8d396bSPeter Tyser the tools directory you can use the MinGW toolchain 4942 2f8d396bSPeter Tyser (http://www.mingw.org). Set your HOST tools to the MinGW 4943 2f8d396bSPeter Tyser toolchain and execute 'make tools'. For example: 4944 2f8d396bSPeter Tyser 4945 2f8d396bSPeter Tyser $ make HOSTCC=i586-mingw32msvc-gcc HOSTSTRIP=i586-mingw32msvc-strip tools 4946 2f8d396bSPeter Tyser 4947 2f8d396bSPeter Tyser Binaries such as tools/mkimage.exe will be created which can 4948 2f8d396bSPeter Tyser be executed on computers running Windows. 4949 2f8d396bSPeter Tyser 4950 c609719bSwdenkU-Boot is intended to be simple to build. After installing the 4951 c609719bSwdenksources you must configure U-Boot for one specific board type. This 4952 c609719bSwdenkis done by typing: 4953 c609719bSwdenk 4954 ab584d67SHolger Freyther make NAME_defconfig 4955 c609719bSwdenk 4956 ab584d67SHolger Freytherwhere "NAME_defconfig" is the name of one of the existing configu- 4957 4d675ae6SMichael Jonesrations; see boards.cfg for supported names. 4958 54387ac9Swdenk 4959 c609719bSwdenkNote: for some board special configuration names may exist; check if 4960 c609719bSwdenk additional information is available from the board vendor; for 4961 2729af9dSwdenk instance, the TQM823L systems are available without (standard) 4962 2729af9dSwdenk or with LCD support. You can select such additional "features" 4963 11ccc33fSMarcel Ziswiler when choosing the configuration, i. e. 4964 c609719bSwdenk 4965 ab584d67SHolger Freyther make TQM823L_defconfig 4966 2729af9dSwdenk - will configure for a plain TQM823L, i. e. no LCD support 4967 c609719bSwdenk 4968 ab584d67SHolger Freyther make TQM823L_LCD_defconfig 4969 c609719bSwdenk - will configure for a TQM823L with U-Boot console on LCD 4970 c609719bSwdenk 4971 c609719bSwdenk etc. 4972 c609719bSwdenk 4973 c609719bSwdenk 4974 c609719bSwdenkFinally, type "make all", and you should get some working U-Boot 4975 7152b1d0Swdenkimages ready for download to / installation on your system: 4976 c609719bSwdenk 4977 c609719bSwdenk- "u-boot.bin" is a raw binary image 4978 c609719bSwdenk- "u-boot" is an image in ELF binary format 4979 c609719bSwdenk- "u-boot.srec" is in Motorola S-Record format 4980 c609719bSwdenk 4981 baf31249SMarian BalakowiczBy default the build is performed locally and the objects are saved 4982 baf31249SMarian Balakowiczin the source directory. One of the two methods can be used to change 4983 baf31249SMarian Balakowiczthis behavior and build U-Boot to some external directory: 4984 baf31249SMarian Balakowicz 4985 baf31249SMarian Balakowicz1. Add O= to the make command line invocations: 4986 baf31249SMarian Balakowicz 4987 baf31249SMarian Balakowicz make O=/tmp/build distclean 4988 ab584d67SHolger Freyther make O=/tmp/build NAME_defconfig 4989 baf31249SMarian Balakowicz make O=/tmp/build all 4990 baf31249SMarian Balakowicz 4991 baf31249SMarian Balakowicz2. Set environment variable BUILD_DIR to point to the desired location: 4992 baf31249SMarian Balakowicz 4993 baf31249SMarian Balakowicz export BUILD_DIR=/tmp/build 4994 baf31249SMarian Balakowicz make distclean 4995 ab584d67SHolger Freyther make NAME_defconfig 4996 baf31249SMarian Balakowicz make all 4997 baf31249SMarian Balakowicz 4998 baf31249SMarian BalakowiczNote that the command line "O=" setting overrides the BUILD_DIR environment 4999 baf31249SMarian Balakowiczvariable. 5000 baf31249SMarian Balakowicz 5001 c609719bSwdenk 5002 c609719bSwdenkPlease be aware that the Makefiles assume you are using GNU make, so 5003 c609719bSwdenkfor instance on NetBSD you might need to use "gmake" instead of 5004 c609719bSwdenknative "make". 5005 c609719bSwdenk 5006 c609719bSwdenk 5007 c609719bSwdenkIf the system board that you have is not listed, then you will need 5008 c609719bSwdenkto port U-Boot to your hardware platform. To do this, follow these 5009 c609719bSwdenksteps: 5010 c609719bSwdenk 5011 c609719bSwdenk1. Add a new configuration option for your board to the toplevel 5012 4d675ae6SMichael Jones "boards.cfg" file, using the existing entries as examples. 5013 4d675ae6SMichael Jones Follow the instructions there to keep the boards in order. 5014 c609719bSwdenk2. Create a new directory to hold your board specific code. Add any 5015 85ec0bccSwdenk files you need. In your board directory, you will need at least 5016 85ec0bccSwdenk the "Makefile", a "<board>.c", "flash.c" and "u-boot.lds". 5017 85ec0bccSwdenk3. Create a new configuration file "include/configs/<board>.h" for 5018 85ec0bccSwdenk your board 5019 c609719bSwdenk3. If you're porting U-Boot to a new CPU, then also create a new 5020 c609719bSwdenk directory to hold your CPU specific code. Add any files you need. 5021 ab584d67SHolger Freyther4. Run "make <board>_defconfig" with your new name. 5022 c609719bSwdenk5. Type "make", and you should get a working "u-boot.srec" file 5023 c609719bSwdenk to be installed on your target system. 5024 85ec0bccSwdenk6. Debug and solve any problems that might arise. 5025 c609719bSwdenk [Of course, this last step is much harder than it sounds.] 5026 c609719bSwdenk 5027 c609719bSwdenk 5028 c609719bSwdenkTesting of U-Boot Modifications, Ports to New Hardware, etc.: 5029 c609719bSwdenk============================================================== 5030 c609719bSwdenk 5031 c609719bSwdenkIf you have modified U-Boot sources (for instance added a new board 5032 c609719bSwdenkor support for new devices, a new CPU, etc.) you are expected to 5033 c609719bSwdenkprovide feedback to the other developers. The feedback normally takes 5034 c609719bSwdenkthe form of a "patch", i. e. a context diff against a certain (latest 5035 218ca724SWolfgang Denkofficial or latest in the git repository) version of U-Boot sources. 5036 c609719bSwdenk 5037 c609719bSwdenkBut before you submit such a patch, please verify that your modifi- 5038 c609719bSwdenkcation did not break existing code. At least make sure that *ALL* of 5039 c609719bSwdenkthe supported boards compile WITHOUT ANY compiler warnings. To do so, 5040 c609719bSwdenkjust run the "MAKEALL" script, which will configure and build U-Boot 5041 c609719bSwdenkfor ALL supported system. Be warned, this will take a while. You can 5042 7152b1d0Swdenkselect which (cross) compiler to use by passing a `CROSS_COMPILE' 5043 218ca724SWolfgang Denkenvironment variable to the script, i. e. to use the ELDK cross tools 5044 218ca724SWolfgang Denkyou can type 5045 c609719bSwdenk 5046 c609719bSwdenk CROSS_COMPILE=ppc_8xx- MAKEALL 5047 c609719bSwdenk 5048 c609719bSwdenkor to build on a native PowerPC system you can type 5049 c609719bSwdenk 5050 c609719bSwdenk CROSS_COMPILE=' ' MAKEALL 5051 c609719bSwdenk 5052 218ca724SWolfgang DenkWhen using the MAKEALL script, the default behaviour is to build 5053 218ca724SWolfgang DenkU-Boot in the source directory. This location can be changed by 5054 218ca724SWolfgang Denksetting the BUILD_DIR environment variable. Also, for each target 5055 218ca724SWolfgang Denkbuilt, the MAKEALL script saves two log files (<target>.ERR and 5056 218ca724SWolfgang Denk<target>.MAKEALL) in the <source dir>/LOG directory. This default 5057 218ca724SWolfgang Denklocation can be changed by setting the MAKEALL_LOGDIR environment 5058 218ca724SWolfgang Denkvariable. For example: 5059 baf31249SMarian Balakowicz 5060 baf31249SMarian Balakowicz export BUILD_DIR=/tmp/build 5061 baf31249SMarian Balakowicz export MAKEALL_LOGDIR=/tmp/log 5062 baf31249SMarian Balakowicz CROSS_COMPILE=ppc_8xx- MAKEALL 5063 baf31249SMarian Balakowicz 5064 218ca724SWolfgang DenkWith the above settings build objects are saved in the /tmp/build, 5065 218ca724SWolfgang Denklog files are saved in the /tmp/log and the source tree remains clean 5066 218ca724SWolfgang Denkduring the whole build process. 5067 baf31249SMarian Balakowicz 5068 baf31249SMarian Balakowicz 5069 c609719bSwdenkSee also "U-Boot Porting Guide" below. 5070 c609719bSwdenk 5071 c609719bSwdenk 5072 c609719bSwdenkMonitor Commands - Overview: 5073 c609719bSwdenk============================ 5074 c609719bSwdenk 5075 c609719bSwdenkgo - start application at address 'addr' 5076 c609719bSwdenkrun - run commands in an environment variable 5077 c609719bSwdenkbootm - boot application image from memory 5078 c609719bSwdenkbootp - boot image via network using BootP/TFTP protocol 5079 44f074c7SMarek Vasutbootz - boot zImage from memory 5080 c609719bSwdenktftpboot- boot image via network using TFTP protocol 5081 c609719bSwdenk and env variables "ipaddr" and "serverip" 5082 c609719bSwdenk (and eventually "gatewayip") 5083 1fb7cd49SSimon Glasstftpput - upload a file via network using TFTP protocol 5084 c609719bSwdenkrarpboot- boot image via network using RARP/TFTP protocol 5085 c609719bSwdenkdiskboot- boot from IDE devicebootd - boot default, i.e., run 'bootcmd' 5086 c609719bSwdenkloads - load S-Record file over serial line 5087 c609719bSwdenkloadb - load binary file over serial line (kermit mode) 5088 c609719bSwdenkmd - memory display 5089 c609719bSwdenkmm - memory modify (auto-incrementing) 5090 c609719bSwdenknm - memory modify (constant address) 5091 c609719bSwdenkmw - memory write (fill) 5092 c609719bSwdenkcp - memory copy 5093 c609719bSwdenkcmp - memory compare 5094 c609719bSwdenkcrc32 - checksum calculation 5095 0f89c54bSPeter Tyseri2c - I2C sub-system 5096 c609719bSwdenksspi - SPI utility commands 5097 c609719bSwdenkbase - print or set address offset 5098 c609719bSwdenkprintenv- print environment variables 5099 c609719bSwdenksetenv - set environment variables 5100 c609719bSwdenksaveenv - save environment variables to persistent storage 5101 c609719bSwdenkprotect - enable or disable FLASH write protection 5102 c609719bSwdenkerase - erase FLASH memory 5103 c609719bSwdenkflinfo - print FLASH memory information 5104 10635afaSKarl O. Pincnand - NAND memory operations (see doc/README.nand) 5105 c609719bSwdenkbdinfo - print Board Info structure 5106 c609719bSwdenkiminfo - print header information for application image 5107 c609719bSwdenkconinfo - print console devices and informations 5108 c609719bSwdenkide - IDE sub-system 5109 c609719bSwdenkloop - infinite loop on address range 5110 56523f12Swdenkloopw - infinite write loop on address range 5111 c609719bSwdenkmtest - simple RAM test 5112 c609719bSwdenkicache - enable or disable instruction cache 5113 c609719bSwdenkdcache - enable or disable data cache 5114 c609719bSwdenkreset - Perform RESET of the CPU 5115 c609719bSwdenkecho - echo args to console 5116 c609719bSwdenkversion - print monitor version 5117 c609719bSwdenkhelp - print online help 5118 c609719bSwdenk? - alias for 'help' 5119 c609719bSwdenk 5120 c609719bSwdenk 5121 c609719bSwdenkMonitor Commands - Detailed Description: 5122 c609719bSwdenk======================================== 5123 c609719bSwdenk 5124 c609719bSwdenkTODO. 5125 c609719bSwdenk 5126 c609719bSwdenkFor now: just type "help <command>". 5127 c609719bSwdenk 5128 c609719bSwdenk 5129 c609719bSwdenkEnvironment Variables: 5130 c609719bSwdenk====================== 5131 c609719bSwdenk 5132 c609719bSwdenkU-Boot supports user configuration using Environment Variables which 5133 c609719bSwdenkcan be made persistent by saving to Flash memory. 5134 c609719bSwdenk 5135 c609719bSwdenkEnvironment Variables are set using "setenv", printed using 5136 c609719bSwdenk"printenv", and saved to Flash using "saveenv". Using "setenv" 5137 c609719bSwdenkwithout a value can be used to delete a variable from the 5138 c609719bSwdenkenvironment. As long as you don't save the environment you are 5139 c609719bSwdenkworking with an in-memory copy. In case the Flash area containing the 5140 c609719bSwdenkenvironment is erased by accident, a default environment is provided. 5141 c609719bSwdenk 5142 c96f86eeSWolfgang DenkSome configuration options can be set using Environment Variables. 5143 c96f86eeSWolfgang Denk 5144 c96f86eeSWolfgang DenkList of environment variables (most likely not complete): 5145 c609719bSwdenk 5146 c609719bSwdenk baudrate - see CONFIG_BAUDRATE 5147 c609719bSwdenk 5148 c609719bSwdenk bootdelay - see CONFIG_BOOTDELAY 5149 c609719bSwdenk 5150 c609719bSwdenk bootcmd - see CONFIG_BOOTCOMMAND 5151 c609719bSwdenk 5152 c609719bSwdenk bootargs - Boot arguments when booting an RTOS image 5153 c609719bSwdenk 5154 c609719bSwdenk bootfile - Name of the image to load with TFTP 5155 c609719bSwdenk 5156 7d721e34SBartlomiej Sieka bootm_low - Memory range available for image processing in the bootm 5157 7d721e34SBartlomiej Sieka command can be restricted. This variable is given as 5158 7d721e34SBartlomiej Sieka a hexadecimal number and defines lowest address allowed 5159 7d721e34SBartlomiej Sieka for use by the bootm command. See also "bootm_size" 5160 7d721e34SBartlomiej Sieka environment variable. Address defined by "bootm_low" is 5161 7d721e34SBartlomiej Sieka also the base of the initial memory mapping for the Linux 5162 c3624e6eSGrant Likely kernel -- see the description of CONFIG_SYS_BOOTMAPSZ and 5163 c3624e6eSGrant Likely bootm_mapsize. 5164 c3624e6eSGrant Likely 5165 c3624e6eSGrant Likely bootm_mapsize - Size of the initial memory mapping for the Linux kernel. 5166 c3624e6eSGrant Likely This variable is given as a hexadecimal number and it 5167 c3624e6eSGrant Likely defines the size of the memory region starting at base 5168 c3624e6eSGrant Likely address bootm_low that is accessible by the Linux kernel 5169 c3624e6eSGrant Likely during early boot. If unset, CONFIG_SYS_BOOTMAPSZ is used 5170 c3624e6eSGrant Likely as the default value if it is defined, and bootm_size is 5171 c3624e6eSGrant Likely used otherwise. 5172 7d721e34SBartlomiej Sieka 5173 7d721e34SBartlomiej Sieka bootm_size - Memory range available for image processing in the bootm 5174 7d721e34SBartlomiej Sieka command can be restricted. This variable is given as 5175 7d721e34SBartlomiej Sieka a hexadecimal number and defines the size of the region 5176 7d721e34SBartlomiej Sieka allowed for use by the bootm command. See also "bootm_low" 5177 7d721e34SBartlomiej Sieka environment variable. 5178 7d721e34SBartlomiej Sieka 5179 4bae9090SBartlomiej Sieka updatefile - Location of the software update file on a TFTP server, used 5180 4bae9090SBartlomiej Sieka by the automatic software update feature. Please refer to 5181 4bae9090SBartlomiej Sieka documentation in doc/README.update for more details. 5182 4bae9090SBartlomiej Sieka 5183 c609719bSwdenk autoload - if set to "no" (any string beginning with 'n'), 5184 c609719bSwdenk "bootp" will just load perform a lookup of the 5185 c609719bSwdenk configuration from the BOOTP server, but not try to 5186 c609719bSwdenk load any image using TFTP 5187 c609719bSwdenk 5188 c609719bSwdenk autostart - if set to "yes", an image loaded using the "bootp", 5189 c609719bSwdenk "rarpboot", "tftpboot" or "diskboot" commands will 5190 c609719bSwdenk be automatically started (by internally calling 5191 c609719bSwdenk "bootm") 5192 c609719bSwdenk 5193 4a6fd34bSwdenk If set to "no", a standalone image passed to the 5194 4a6fd34bSwdenk "bootm" command will be copied to the load address 5195 4a6fd34bSwdenk (and eventually uncompressed), but NOT be started. 5196 4a6fd34bSwdenk This can be used to load and uncompress arbitrary 5197 4a6fd34bSwdenk data. 5198 4a6fd34bSwdenk 5199 a28afca5SDavid A. Long fdt_high - if set this restricts the maximum address that the 5200 a28afca5SDavid A. Long flattened device tree will be copied into upon boot. 5201 fa34f6b2SShawn Guo For example, if you have a system with 1 GB memory 5202 fa34f6b2SShawn Guo at physical address 0x10000000, while Linux kernel 5203 fa34f6b2SShawn Guo only recognizes the first 704 MB as low memory, you 5204 fa34f6b2SShawn Guo may need to set fdt_high as 0x3C000000 to have the 5205 fa34f6b2SShawn Guo device tree blob be copied to the maximum address 5206 fa34f6b2SShawn Guo of the 704 MB low memory, so that Linux kernel can 5207 fa34f6b2SShawn Guo access it during the boot procedure. 5208 fa34f6b2SShawn Guo 5209 a28afca5SDavid A. Long If this is set to the special value 0xFFFFFFFF then 5210 a28afca5SDavid A. Long the fdt will not be copied at all on boot. For this 5211 a28afca5SDavid A. Long to work it must reside in writable memory, have 5212 a28afca5SDavid A. Long sufficient padding on the end of it for u-boot to 5213 a28afca5SDavid A. Long add the information it needs into it, and the memory 5214 a28afca5SDavid A. Long must be accessible by the kernel. 5215 a28afca5SDavid A. Long 5216 eea63e05SSimon Glass fdtcontroladdr- if set this is the address of the control flattened 5217 eea63e05SSimon Glass device tree used by U-Boot when CONFIG_OF_CONTROL is 5218 eea63e05SSimon Glass defined. 5219 eea63e05SSimon Glass 5220 17ea1177Swdenk i2cfast - (PPC405GP|PPC405EP only) 5221 17ea1177Swdenk if set to 'y' configures Linux I2C driver for fast 5222 17ea1177Swdenk mode (400kHZ). This environment variable is used in 5223 17ea1177Swdenk initialization code. So, for changes to be effective 5224 17ea1177Swdenk it must be saved and board must be reset. 5225 17ea1177Swdenk 5226 c609719bSwdenk initrd_high - restrict positioning of initrd images: 5227 c609719bSwdenk If this variable is not set, initrd images will be 5228 c609719bSwdenk copied to the highest possible address in RAM; this 5229 c609719bSwdenk is usually what you want since it allows for 5230 c609719bSwdenk maximum initrd size. If for some reason you want to 5231 c609719bSwdenk make sure that the initrd image is loaded below the 5232 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BOOTMAPSZ limit, you can set this environment 5233 c609719bSwdenk variable to a value of "no" or "off" or "0". 5234 c609719bSwdenk Alternatively, you can set it to a maximum upper 5235 c609719bSwdenk address to use (U-Boot will still check that it 5236 c609719bSwdenk does not overwrite the U-Boot stack and data). 5237 c609719bSwdenk 5238 c609719bSwdenk For instance, when you have a system with 16 MB 5239 7152b1d0Swdenk RAM, and want to reserve 4 MB from use by Linux, 5240 c609719bSwdenk you can do this by adding "mem=12M" to the value of 5241 c609719bSwdenk the "bootargs" variable. However, now you must make 5242 7152b1d0Swdenk sure that the initrd image is placed in the first 5243 c609719bSwdenk 12 MB as well - this can be done with 5244 c609719bSwdenk 5245 c609719bSwdenk setenv initrd_high 00c00000 5246 c609719bSwdenk 5247 38b99261Swdenk If you set initrd_high to 0xFFFFFFFF, this is an 5248 38b99261Swdenk indication to U-Boot that all addresses are legal 5249 38b99261Swdenk for the Linux kernel, including addresses in flash 5250 38b99261Swdenk memory. In this case U-Boot will NOT COPY the 5251 38b99261Swdenk ramdisk at all. This may be useful to reduce the 5252 38b99261Swdenk boot time on your system, but requires that this 5253 38b99261Swdenk feature is supported by your Linux kernel. 5254 38b99261Swdenk 5255 c609719bSwdenk ipaddr - IP address; needed for tftpboot command 5256 c609719bSwdenk 5257 c609719bSwdenk loadaddr - Default load address for commands like "bootp", 5258 dc7c9a1aSwdenk "rarpboot", "tftpboot", "loadb" or "diskboot" 5259 c609719bSwdenk 5260 c609719bSwdenk loads_echo - see CONFIG_LOADS_ECHO 5261 c609719bSwdenk 5262 c609719bSwdenk serverip - TFTP server IP address; needed for tftpboot command 5263 c609719bSwdenk 5264 c609719bSwdenk bootretry - see CONFIG_BOOT_RETRY_TIME 5265 c609719bSwdenk 5266 c609719bSwdenk bootdelaykey - see CONFIG_AUTOBOOT_DELAY_STR 5267 c609719bSwdenk 5268 c609719bSwdenk bootstopkey - see CONFIG_AUTOBOOT_STOP_STR 5269 c609719bSwdenk 5270 e2a53458SMike Frysinger ethprime - controls which interface is used first. 5271 a3d991bdSwdenk 5272 e2a53458SMike Frysinger ethact - controls which interface is currently active. 5273 e2a53458SMike Frysinger For example you can do the following 5274 a3d991bdSwdenk 5275 48690d80SHeiko Schocher => setenv ethact FEC 5276 48690d80SHeiko Schocher => ping 192.168.0.1 # traffic sent on FEC 5277 48690d80SHeiko Schocher => setenv ethact SCC 5278 48690d80SHeiko Schocher => ping 10.0.0.1 # traffic sent on SCC 5279 a3d991bdSwdenk 5280 e1692577SMatthias Fuchs ethrotate - When set to "no" U-Boot does not go through all 5281 e1692577SMatthias Fuchs available network interfaces. 5282 e1692577SMatthias Fuchs It just stays at the currently selected interface. 5283 e1692577SMatthias Fuchs 5284 a3d991bdSwdenk netretry - When set to "no" each network operation will 5285 a3d991bdSwdenk either succeed or fail without retrying. 5286 6e592385Swdenk When set to "once" the network operation will 5287 6e592385Swdenk fail when all the available network interfaces 5288 6e592385Swdenk are tried once without success. 5289 a3d991bdSwdenk Useful on scripts which control the retry operation 5290 a3d991bdSwdenk themselves. 5291 a3d991bdSwdenk 5292 b4e2f89dSJean-Christophe PLAGNIOL-VILLARD npe_ucode - set load address for the NPE microcode 5293 a1cf027aSJean-Christophe PLAGNIOL-VILLARD 5294 8d51aacdSSimon Glass silent_linux - If set then linux will be told to boot silently, by 5295 8d51aacdSSimon Glass changing the console to be empty. If "yes" it will be 5296 8d51aacdSSimon Glass made silent. If "no" it will not be made silent. If 5297 8d51aacdSSimon Glass unset, then it will be made silent if the U-Boot console 5298 8d51aacdSSimon Glass is silent. 5299 8d51aacdSSimon Glass 5300 28cb9375SWolfgang Denk tftpsrcport - If this is set, the value is used for TFTP's 5301 ecb0ccd9SWolfgang Denk UDP source port. 5302 ecb0ccd9SWolfgang Denk 5303 28cb9375SWolfgang Denk tftpdstport - If this is set, the value is used for TFTP's UDP 5304 28cb9375SWolfgang Denk destination port instead of the Well Know Port 69. 5305 28cb9375SWolfgang Denk 5306 c96f86eeSWolfgang Denk tftpblocksize - Block size to use for TFTP transfers; if not set, 5307 c96f86eeSWolfgang Denk we use the TFTP server's default block size 5308 c96f86eeSWolfgang Denk 5309 c96f86eeSWolfgang Denk tftptimeout - Retransmission timeout for TFTP packets (in milli- 5310 c96f86eeSWolfgang Denk seconds, minimum value is 1000 = 1 second). Defines 5311 c96f86eeSWolfgang Denk when a packet is considered to be lost so it has to 5312 c96f86eeSWolfgang Denk be retransmitted. The default is 5000 = 5 seconds. 5313 c96f86eeSWolfgang Denk Lowering this value may make downloads succeed 5314 c96f86eeSWolfgang Denk faster in networks with high packet loss rates or 5315 c96f86eeSWolfgang Denk with unreliable TFTP servers. 5316 c96f86eeSWolfgang Denk 5317 a3d991bdSwdenk vlan - When set to a value < 4095 the traffic over 5318 11ccc33fSMarcel Ziswiler Ethernet is encapsulated/received over 802.1q 5319 a3d991bdSwdenk VLAN tagged frames. 5320 c609719bSwdenk 5321 dc0b7b0eSJason HobbsThe following image location variables contain the location of images 5322 dc0b7b0eSJason Hobbsused in booting. The "Image" column gives the role of the image and is 5323 dc0b7b0eSJason Hobbsnot an environment variable name. The other columns are environment 5324 dc0b7b0eSJason Hobbsvariable names. "File Name" gives the name of the file on a TFTP 5325 dc0b7b0eSJason Hobbsserver, "RAM Address" gives the location in RAM the image will be 5326 dc0b7b0eSJason Hobbsloaded to, and "Flash Location" gives the image's address in NOR 5327 dc0b7b0eSJason Hobbsflash or offset in NAND flash. 5328 dc0b7b0eSJason Hobbs 5329 dc0b7b0eSJason Hobbs*Note* - these variables don't have to be defined for all boards, some 5330 dc0b7b0eSJason Hobbsboards currenlty use other variables for these purposes, and some 5331 dc0b7b0eSJason Hobbsboards use these variables for other purposes. 5332 dc0b7b0eSJason Hobbs 5333 dc0b7b0eSJason HobbsImage File Name RAM Address Flash Location 5334 dc0b7b0eSJason Hobbs----- --------- ----------- -------------- 5335 dc0b7b0eSJason Hobbsu-boot u-boot u-boot_addr_r u-boot_addr 5336 dc0b7b0eSJason HobbsLinux kernel bootfile kernel_addr_r kernel_addr 5337 dc0b7b0eSJason Hobbsdevice tree blob fdtfile fdt_addr_r fdt_addr 5338 dc0b7b0eSJason Hobbsramdisk ramdiskfile ramdisk_addr_r ramdisk_addr 5339 dc0b7b0eSJason Hobbs 5340 c609719bSwdenkThe following environment variables may be used and automatically 5341 c609719bSwdenkupdated by the network boot commands ("bootp" and "rarpboot"), 5342 c609719bSwdenkdepending the information provided by your boot server: 5343 c609719bSwdenk 5344 c609719bSwdenk bootfile - see above 5345 c609719bSwdenk dnsip - IP address of your Domain Name Server 5346 fe389a82Sstroese dnsip2 - IP address of your secondary Domain Name Server 5347 c609719bSwdenk gatewayip - IP address of the Gateway (Router) to use 5348 c609719bSwdenk hostname - Target hostname 5349 c609719bSwdenk ipaddr - see above 5350 c609719bSwdenk netmask - Subnet Mask 5351 c609719bSwdenk rootpath - Pathname of the root filesystem on the NFS server 5352 c609719bSwdenk serverip - see above 5353 c609719bSwdenk 5354 c609719bSwdenk 5355 c609719bSwdenkThere are two special Environment Variables: 5356 c609719bSwdenk 5357 c609719bSwdenk serial# - contains hardware identification information such 5358 c609719bSwdenk as type string and/or serial number 5359 c609719bSwdenk ethaddr - Ethernet address 5360 c609719bSwdenk 5361 c609719bSwdenkThese variables can be set only once (usually during manufacturing of 5362 c609719bSwdenkthe board). U-Boot refuses to delete or overwrite these variables 5363 c609719bSwdenkonce they have been set once. 5364 c609719bSwdenk 5365 c609719bSwdenk 5366 c1551ea8SstroeseFurther special Environment Variables: 5367 c1551ea8Sstroese 5368 c1551ea8Sstroese ver - Contains the U-Boot version string as printed 5369 c1551ea8Sstroese with the "version" command. This variable is 5370 c1551ea8Sstroese readonly (see CONFIG_VERSION_VARIABLE). 5371 c1551ea8Sstroese 5372 c1551ea8Sstroese 5373 c609719bSwdenkPlease note that changes to some configuration parameters may take 5374 c609719bSwdenkonly effect after the next boot (yes, that's just like Windoze :-). 5375 c609719bSwdenk 5376 c609719bSwdenk 5377 170ab110SJoe HershbergerCallback functions for environment variables: 5378 170ab110SJoe Hershberger--------------------------------------------- 5379 170ab110SJoe Hershberger 5380 170ab110SJoe HershbergerFor some environment variables, the behavior of u-boot needs to change 5381 170ab110SJoe Hershbergerwhen their values are changed. This functionailty allows functions to 5382 170ab110SJoe Hershbergerbe associated with arbitrary variables. On creation, overwrite, or 5383 170ab110SJoe Hershbergerdeletion, the callback will provide the opportunity for some side 5384 170ab110SJoe Hershbergereffect to happen or for the change to be rejected. 5385 170ab110SJoe Hershberger 5386 170ab110SJoe HershbergerThe callbacks are named and associated with a function using the 5387 170ab110SJoe HershbergerU_BOOT_ENV_CALLBACK macro in your board or driver code. 5388 170ab110SJoe Hershberger 5389 170ab110SJoe HershbergerThese callbacks are associated with variables in one of two ways. The 5390 170ab110SJoe Hershbergerstatic list can be added to by defining CONFIG_ENV_CALLBACK_LIST_STATIC 5391 170ab110SJoe Hershbergerin the board configuration to a string that defines a list of 5392 170ab110SJoe Hershbergerassociations. The list must be in the following format: 5393 170ab110SJoe Hershberger 5394 170ab110SJoe Hershberger entry = variable_name[:callback_name] 5395 170ab110SJoe Hershberger list = entry[,list] 5396 170ab110SJoe Hershberger 5397 170ab110SJoe HershbergerIf the callback name is not specified, then the callback is deleted. 5398 170ab110SJoe HershbergerSpaces are also allowed anywhere in the list. 5399 170ab110SJoe Hershberger 5400 170ab110SJoe HershbergerCallbacks can also be associated by defining the ".callbacks" variable 5401 170ab110SJoe Hershbergerwith the same list format above. Any association in ".callbacks" will 5402 170ab110SJoe Hershbergeroverride any association in the static list. You can define 5403 170ab110SJoe HershbergerCONFIG_ENV_CALLBACK_LIST_DEFAULT to a list (string) to define the 5404 170ab110SJoe Hershberger".callbacks" envirnoment variable in the default or embedded environment. 5405 170ab110SJoe Hershberger 5406 170ab110SJoe Hershberger 5407 f07771ccSwdenkCommand Line Parsing: 5408 f07771ccSwdenk===================== 5409 f07771ccSwdenk 5410 f07771ccSwdenkThere are two different command line parsers available with U-Boot: 5411 7152b1d0Swdenkthe old "simple" one, and the much more powerful "hush" shell: 5412 f07771ccSwdenk 5413 f07771ccSwdenkOld, simple command line parser: 5414 f07771ccSwdenk-------------------------------- 5415 f07771ccSwdenk 5416 f07771ccSwdenk- supports environment variables (through setenv / saveenv commands) 5417 f07771ccSwdenk- several commands on one line, separated by ';' 5418 fe126d8bSWolfgang Denk- variable substitution using "... ${name} ..." syntax 5419 f07771ccSwdenk- special characters ('$', ';') can be escaped by prefixing with '\', 5420 f07771ccSwdenk for example: 5421 fe126d8bSWolfgang Denk setenv bootcmd bootm \${address} 5422 f07771ccSwdenk- You can also escape text by enclosing in single apostrophes, for example: 5423 f07771ccSwdenk setenv addip 'setenv bootargs $bootargs ip=$ipaddr:$serverip:$gatewayip:$netmask:$hostname::off' 5424 f07771ccSwdenk 5425 f07771ccSwdenkHush shell: 5426 f07771ccSwdenk----------- 5427 f07771ccSwdenk 5428 f07771ccSwdenk- similar to Bourne shell, with control structures like 5429 f07771ccSwdenk if...then...else...fi, for...do...done; while...do...done, 5430 f07771ccSwdenk until...do...done, ... 5431 f07771ccSwdenk- supports environment ("global") variables (through setenv / saveenv 5432 f07771ccSwdenk commands) and local shell variables (through standard shell syntax 5433 f07771ccSwdenk "name=value"); only environment variables can be used with "run" 5434 f07771ccSwdenk command 5435 f07771ccSwdenk 5436 f07771ccSwdenkGeneral rules: 5437 f07771ccSwdenk-------------- 5438 f07771ccSwdenk 5439 f07771ccSwdenk(1) If a command line (or an environment variable executed by a "run" 5440 f07771ccSwdenk command) contains several commands separated by semicolon, and 5441 f07771ccSwdenk one of these commands fails, then the remaining commands will be 5442 f07771ccSwdenk executed anyway. 5443 f07771ccSwdenk 5444 f07771ccSwdenk(2) If you execute several variables with one call to run (i. e. 5445 11ccc33fSMarcel Ziswiler calling run with a list of variables as arguments), any failing 5446 f07771ccSwdenk command will cause "run" to terminate, i. e. the remaining 5447 f07771ccSwdenk variables are not executed. 5448 f07771ccSwdenk 5449 c609719bSwdenkNote for Redundant Ethernet Interfaces: 5450 c609719bSwdenk======================================= 5451 c609719bSwdenk 5452 11ccc33fSMarcel ZiswilerSome boards come with redundant Ethernet interfaces; U-Boot supports 5453 c609719bSwdenksuch configurations and is capable of automatic selection of a 5454 7152b1d0Swdenk"working" interface when needed. MAC assignment works as follows: 5455 c609719bSwdenk 5456 c609719bSwdenkNetwork interfaces are numbered eth0, eth1, eth2, ... Corresponding 5457 c609719bSwdenkMAC addresses can be stored in the environment as "ethaddr" (=>eth0), 5458 c609719bSwdenk"eth1addr" (=>eth1), "eth2addr", ... 5459 c609719bSwdenk 5460 c609719bSwdenkIf the network interface stores some valid MAC address (for instance 5461 c609719bSwdenkin SROM), this is used as default address if there is NO correspon- 5462 c609719bSwdenkding setting in the environment; if the corresponding environment 5463 c609719bSwdenkvariable is set, this overrides the settings in the card; that means: 5464 c609719bSwdenk 5465 c609719bSwdenko If the SROM has a valid MAC address, and there is no address in the 5466 c609719bSwdenk environment, the SROM's address is used. 5467 c609719bSwdenk 5468 c609719bSwdenko If there is no valid address in the SROM, and a definition in the 5469 c609719bSwdenk environment exists, then the value from the environment variable is 5470 c609719bSwdenk used. 5471 c609719bSwdenk 5472 c609719bSwdenko If both the SROM and the environment contain a MAC address, and 5473 c609719bSwdenk both addresses are the same, this MAC address is used. 5474 c609719bSwdenk 5475 c609719bSwdenko If both the SROM and the environment contain a MAC address, and the 5476 c609719bSwdenk addresses differ, the value from the environment is used and a 5477 c609719bSwdenk warning is printed. 5478 c609719bSwdenk 5479 c609719bSwdenko If neither SROM nor the environment contain a MAC address, an error 5480 c609719bSwdenk is raised. 5481 c609719bSwdenk 5482 ecee9324SBen WarrenIf Ethernet drivers implement the 'write_hwaddr' function, valid MAC addresses 5483 ecee9324SBen Warrenwill be programmed into hardware as part of the initialization process. This 5484 ecee9324SBen Warrenmay be skipped by setting the appropriate 'ethmacskip' environment variable. 5485 ecee9324SBen WarrenThe naming convention is as follows: 5486 ecee9324SBen Warren"ethmacskip" (=>eth0), "eth1macskip" (=>eth1) etc. 5487 c609719bSwdenk 5488 c609719bSwdenkImage Formats: 5489 c609719bSwdenk============== 5490 c609719bSwdenk 5491 3310c549SMarian BalakowiczU-Boot is capable of booting (and performing other auxiliary operations on) 5492 3310c549SMarian Balakowiczimages in two formats: 5493 3310c549SMarian Balakowicz 5494 3310c549SMarian BalakowiczNew uImage format (FIT) 5495 3310c549SMarian Balakowicz----------------------- 5496 3310c549SMarian Balakowicz 5497 3310c549SMarian BalakowiczFlexible and powerful format based on Flattened Image Tree -- FIT (similar 5498 3310c549SMarian Balakowiczto Flattened Device Tree). It allows the use of images with multiple 5499 3310c549SMarian Balakowiczcomponents (several kernels, ramdisks, etc.), with contents protected by 5500 3310c549SMarian BalakowiczSHA1, MD5 or CRC32. More details are found in the doc/uImage.FIT directory. 5501 3310c549SMarian Balakowicz 5502 3310c549SMarian Balakowicz 5503 3310c549SMarian BalakowiczOld uImage format 5504 3310c549SMarian Balakowicz----------------- 5505 3310c549SMarian Balakowicz 5506 3310c549SMarian BalakowiczOld image format is based on binary files which can be basically anything, 5507 3310c549SMarian Balakowiczpreceded by a special header; see the definitions in include/image.h for 5508 3310c549SMarian Balakowiczdetails; basically, the header defines the following image properties: 5509 c609719bSwdenk 5510 c609719bSwdenk* Target Operating System (Provisions for OpenBSD, NetBSD, FreeBSD, 5511 c609719bSwdenk 4.4BSD, Linux, SVR4, Esix, Solaris, Irix, SCO, Dell, NCR, VxWorks, 5512 f5ed9e39SPeter Tyser LynxOS, pSOS, QNX, RTEMS, INTEGRITY; 5513 f5ed9e39SPeter Tyser Currently supported: Linux, NetBSD, VxWorks, QNX, RTEMS, LynxOS, 5514 f5ed9e39SPeter Tyser INTEGRITY). 5515 7b64fef3SWolfgang Denk* Target CPU Architecture (Provisions for Alpha, ARM, AVR32, Intel x86, 5516 afc1ce82SMacpaul Lin IA64, MIPS, NDS32, Nios II, PowerPC, IBM S390, SuperH, Sparc, Sparc 64 Bit; 5517 afc1ce82SMacpaul Lin Currently supported: ARM, AVR32, Intel x86, MIPS, NDS32, Nios II, PowerPC). 5518 c29fdfc1Swdenk* Compression Type (uncompressed, gzip, bzip2) 5519 c609719bSwdenk* Load Address 5520 c609719bSwdenk* Entry Point 5521 c609719bSwdenk* Image Name 5522 c609719bSwdenk* Image Timestamp 5523 c609719bSwdenk 5524 c609719bSwdenkThe header is marked by a special Magic Number, and both the header 5525 c609719bSwdenkand the data portions of the image are secured against corruption by 5526 c609719bSwdenkCRC32 checksums. 5527 c609719bSwdenk 5528 c609719bSwdenk 5529 c609719bSwdenkLinux Support: 5530 c609719bSwdenk============== 5531 c609719bSwdenk 5532 c609719bSwdenkAlthough U-Boot should support any OS or standalone application 5533 7152b1d0Swdenkeasily, the main focus has always been on Linux during the design of 5534 c609719bSwdenkU-Boot. 5535 c609719bSwdenk 5536 c609719bSwdenkU-Boot includes many features that so far have been part of some 5537 c609719bSwdenkspecial "boot loader" code within the Linux kernel. Also, any 5538 c609719bSwdenk"initrd" images to be used are no longer part of one big Linux image; 5539 c609719bSwdenkinstead, kernel and "initrd" are separate images. This implementation 5540 7152b1d0Swdenkserves several purposes: 5541 c609719bSwdenk 5542 c609719bSwdenk- the same features can be used for other OS or standalone 5543 c609719bSwdenk applications (for instance: using compressed images to reduce the 5544 c609719bSwdenk Flash memory footprint) 5545 c609719bSwdenk 5546 c609719bSwdenk- it becomes much easier to port new Linux kernel versions because 5547 7152b1d0Swdenk lots of low-level, hardware dependent stuff are done by U-Boot 5548 c609719bSwdenk 5549 c609719bSwdenk- the same Linux kernel image can now be used with different "initrd" 5550 c609719bSwdenk images; of course this also means that different kernel images can 5551 c609719bSwdenk be run with the same "initrd". This makes testing easier (you don't 5552 c609719bSwdenk have to build a new "zImage.initrd" Linux image when you just 5553 c609719bSwdenk change a file in your "initrd"). Also, a field-upgrade of the 5554 c609719bSwdenk software is easier now. 5555 c609719bSwdenk 5556 c609719bSwdenk 5557 c609719bSwdenkLinux HOWTO: 5558 c609719bSwdenk============ 5559 c609719bSwdenk 5560 c609719bSwdenkPorting Linux to U-Boot based systems: 5561 c609719bSwdenk--------------------------------------- 5562 c609719bSwdenk 5563 c609719bSwdenkU-Boot cannot save you from doing all the necessary modifications to 5564 c609719bSwdenkconfigure the Linux device drivers for use with your target hardware 5565 c609719bSwdenk(no, we don't intend to provide a full virtual machine interface to 5566 c609719bSwdenkLinux :-). 5567 c609719bSwdenk 5568 a47a12beSStefan RoeseBut now you can ignore ALL boot loader code (in arch/powerpc/mbxboot). 5569 c609719bSwdenk 5570 c609719bSwdenkJust make sure your machine specific header file (for instance 5571 c609719bSwdenkinclude/asm-ppc/tqm8xx.h) includes the same definition of the Board 5572 1dc30693SMarkus HeidelbergInformation structure as we define in include/asm-<arch>/u-boot.h, 5573 1dc30693SMarkus Heidelbergand make sure that your definition of IMAP_ADDR uses the same value 5574 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARDas your U-Boot configuration in CONFIG_SYS_IMMR. 5575 c609719bSwdenk 5576 2eb31b13SSimon GlassNote that U-Boot now has a driver model, a unified model for drivers. 5577 2eb31b13SSimon GlassIf you are adding a new driver, plumb it into driver model. If there 5578 2eb31b13SSimon Glassis no uclass available, you are encouraged to create one. See 5579 2eb31b13SSimon Glassdoc/driver-model. 5580 2eb31b13SSimon Glass 5581 c609719bSwdenk 5582 c609719bSwdenkConfiguring the Linux kernel: 5583 c609719bSwdenk----------------------------- 5584 c609719bSwdenk 5585 c609719bSwdenkNo specific requirements for U-Boot. Make sure you have some root 5586 c609719bSwdenkdevice (initial ramdisk, NFS) for your target system. 5587 c609719bSwdenk 5588 c609719bSwdenk 5589 c609719bSwdenkBuilding a Linux Image: 5590 c609719bSwdenk----------------------- 5591 c609719bSwdenk 5592 24ee89b9SwdenkWith U-Boot, "normal" build targets like "zImage" or "bzImage" are 5593 24ee89b9Swdenknot used. If you use recent kernel source, a new build target 5594 24ee89b9Swdenk"uImage" will exist which automatically builds an image usable by 5595 24ee89b9SwdenkU-Boot. Most older kernels also have support for a "pImage" target, 5596 24ee89b9Swdenkwhich was introduced for our predecessor project PPCBoot and uses a 5597 24ee89b9Swdenk100% compatible format. 5598 c609719bSwdenk 5599 c609719bSwdenkExample: 5600 c609719bSwdenk 5601 ab584d67SHolger Freyther make TQM850L_defconfig 5602 c609719bSwdenk make oldconfig 5603 c609719bSwdenk make dep 5604 24ee89b9Swdenk make uImage 5605 c609719bSwdenk 5606 24ee89b9SwdenkThe "uImage" build target uses a special tool (in 'tools/mkimage') to 5607 24ee89b9Swdenkencapsulate a compressed Linux kernel image with header information, 5608 24ee89b9SwdenkCRC32 checksum etc. for use with U-Boot. This is what we are doing: 5609 c609719bSwdenk 5610 24ee89b9Swdenk* build a standard "vmlinux" kernel image (in ELF binary format): 5611 24ee89b9Swdenk 5612 24ee89b9Swdenk* convert the kernel into a raw binary image: 5613 24ee89b9Swdenk 5614 24ee89b9Swdenk ${CROSS_COMPILE}-objcopy -O binary \ 5615 24ee89b9Swdenk -R .note -R .comment \ 5616 24ee89b9Swdenk -S vmlinux linux.bin 5617 24ee89b9Swdenk 5618 24ee89b9Swdenk* compress the binary image: 5619 24ee89b9Swdenk 5620 24ee89b9Swdenk gzip -9 linux.bin 5621 24ee89b9Swdenk 5622 24ee89b9Swdenk* package compressed binary image for U-Boot: 5623 24ee89b9Swdenk 5624 24ee89b9Swdenk mkimage -A ppc -O linux -T kernel -C gzip \ 5625 24ee89b9Swdenk -a 0 -e 0 -n "Linux Kernel Image" \ 5626 24ee89b9Swdenk -d linux.bin.gz uImage 5627 24ee89b9Swdenk 5628 24ee89b9Swdenk 5629 24ee89b9SwdenkThe "mkimage" tool can also be used to create ramdisk images for use 5630 24ee89b9Swdenkwith U-Boot, either separated from the Linux kernel image, or 5631 24ee89b9Swdenkcombined into one file. "mkimage" encapsulates the images with a 64 5632 24ee89b9Swdenkbyte header containing information about target architecture, 5633 24ee89b9Swdenkoperating system, image type, compression method, entry points, time 5634 24ee89b9Swdenkstamp, CRC32 checksums, etc. 5635 24ee89b9Swdenk 5636 24ee89b9Swdenk"mkimage" can be called in two ways: to verify existing images and 5637 24ee89b9Swdenkprint the header information, or to build new images. 5638 c609719bSwdenk 5639 c609719bSwdenkIn the first form (with "-l" option) mkimage lists the information 5640 c609719bSwdenkcontained in the header of an existing U-Boot image; this includes 5641 c609719bSwdenkchecksum verification: 5642 c609719bSwdenk 5643 c609719bSwdenk tools/mkimage -l image 5644 c609719bSwdenk -l ==> list image header information 5645 c609719bSwdenk 5646 c609719bSwdenkThe second form (with "-d" option) is used to build a U-Boot image 5647 c609719bSwdenkfrom a "data file" which is used as image payload: 5648 c609719bSwdenk 5649 c609719bSwdenk tools/mkimage -A arch -O os -T type -C comp -a addr -e ep \ 5650 c609719bSwdenk -n name -d data_file image 5651 c609719bSwdenk -A ==> set architecture to 'arch' 5652 c609719bSwdenk -O ==> set operating system to 'os' 5653 c609719bSwdenk -T ==> set image type to 'type' 5654 c609719bSwdenk -C ==> set compression type 'comp' 5655 c609719bSwdenk -a ==> set load address to 'addr' (hex) 5656 c609719bSwdenk -e ==> set entry point to 'ep' (hex) 5657 c609719bSwdenk -n ==> set image name to 'name' 5658 c609719bSwdenk -d ==> use image data from 'datafile' 5659 c609719bSwdenk 5660 69459791SwdenkRight now, all Linux kernels for PowerPC systems use the same load 5661 69459791Swdenkaddress (0x00000000), but the entry point address depends on the 5662 69459791Swdenkkernel version: 5663 c609719bSwdenk 5664 c609719bSwdenk- 2.2.x kernels have the entry point at 0x0000000C, 5665 24ee89b9Swdenk- 2.3.x and later kernels have the entry point at 0x00000000. 5666 c609719bSwdenk 5667 c609719bSwdenkSo a typical call to build a U-Boot image would read: 5668 c609719bSwdenk 5669 24ee89b9Swdenk -> tools/mkimage -n '2.4.4 kernel for TQM850L' \ 5670 24ee89b9Swdenk > -A ppc -O linux -T kernel -C gzip -a 0 -e 0 \ 5671 a47a12beSStefan Roese > -d /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux.gz \ 5672 24ee89b9Swdenk > examples/uImage.TQM850L 5673 24ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5674 c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5675 c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5676 c609719bSwdenk Data Size: 335725 Bytes = 327.86 kB = 0.32 MB 5677 c609719bSwdenk Load Address: 0x00000000 5678 24ee89b9Swdenk Entry Point: 0x00000000 5679 c609719bSwdenk 5680 c609719bSwdenkTo verify the contents of the image (or check for corruption): 5681 c609719bSwdenk 5682 24ee89b9Swdenk -> tools/mkimage -l examples/uImage.TQM850L 5683 24ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5684 c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5685 c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5686 c609719bSwdenk Data Size: 335725 Bytes = 327.86 kB = 0.32 MB 5687 c609719bSwdenk Load Address: 0x00000000 5688 24ee89b9Swdenk Entry Point: 0x00000000 5689 c609719bSwdenk 5690 c609719bSwdenkNOTE: for embedded systems where boot time is critical you can trade 5691 c609719bSwdenkspeed for memory and install an UNCOMPRESSED image instead: this 5692 c609719bSwdenkneeds more space in Flash, but boots much faster since it does not 5693 c609719bSwdenkneed to be uncompressed: 5694 c609719bSwdenk 5695 a47a12beSStefan Roese -> gunzip /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux.gz 5696 24ee89b9Swdenk -> tools/mkimage -n '2.4.4 kernel for TQM850L' \ 5697 24ee89b9Swdenk > -A ppc -O linux -T kernel -C none -a 0 -e 0 \ 5698 a47a12beSStefan Roese > -d /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux \ 5699 24ee89b9Swdenk > examples/uImage.TQM850L-uncompressed 5700 24ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5701 c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5702 c609719bSwdenk Image Type: PowerPC Linux Kernel Image (uncompressed) 5703 c609719bSwdenk Data Size: 792160 Bytes = 773.59 kB = 0.76 MB 5704 c609719bSwdenk Load Address: 0x00000000 5705 24ee89b9Swdenk Entry Point: 0x00000000 5706 c609719bSwdenk 5707 c609719bSwdenk 5708 c609719bSwdenkSimilar you can build U-Boot images from a 'ramdisk.image.gz' file 5709 c609719bSwdenkwhen your kernel is intended to use an initial ramdisk: 5710 c609719bSwdenk 5711 c609719bSwdenk -> tools/mkimage -n 'Simple Ramdisk Image' \ 5712 c609719bSwdenk > -A ppc -O linux -T ramdisk -C gzip \ 5713 c609719bSwdenk > -d /LinuxPPC/images/SIMPLE-ramdisk.image.gz examples/simple-initrd 5714 c609719bSwdenk Image Name: Simple Ramdisk Image 5715 c609719bSwdenk Created: Wed Jan 12 14:01:50 2000 5716 c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5717 c609719bSwdenk Data Size: 566530 Bytes = 553.25 kB = 0.54 MB 5718 c609719bSwdenk Load Address: 0x00000000 5719 c609719bSwdenk Entry Point: 0x00000000 5720 c609719bSwdenk 5721 a804b5ceSGuilherme Maciel FerreiraThe "dumpimage" is a tool to disassemble images built by mkimage. Its "-i" 5722 a804b5ceSGuilherme Maciel Ferreiraoption performs the converse operation of the mkimage's second form (the "-d" 5723 a804b5ceSGuilherme Maciel Ferreiraoption). Given an image built by mkimage, the dumpimage extracts a "data file" 5724 a804b5ceSGuilherme Maciel Ferreirafrom the image: 5725 a804b5ceSGuilherme Maciel Ferreira 5726 a804b5ceSGuilherme Maciel Ferreira tools/dumpimage -i image -p position data_file 5727 a804b5ceSGuilherme Maciel Ferreira -i ==> extract from the 'image' a specific 'data_file', \ 5728 a804b5ceSGuilherme Maciel Ferreira indexed by 'position' 5729 a804b5ceSGuilherme Maciel Ferreira 5730 c609719bSwdenk 5731 c609719bSwdenkInstalling a Linux Image: 5732 c609719bSwdenk------------------------- 5733 c609719bSwdenk 5734 c609719bSwdenkTo downloading a U-Boot image over the serial (console) interface, 5735 c609719bSwdenkyou must convert the image to S-Record format: 5736 c609719bSwdenk 5737 c609719bSwdenk objcopy -I binary -O srec examples/image examples/image.srec 5738 c609719bSwdenk 5739 c609719bSwdenkThe 'objcopy' does not understand the information in the U-Boot 5740 c609719bSwdenkimage header, so the resulting S-Record file will be relative to 5741 c609719bSwdenkaddress 0x00000000. To load it to a given address, you need to 5742 c609719bSwdenkspecify the target address as 'offset' parameter with the 'loads' 5743 c609719bSwdenkcommand. 5744 c609719bSwdenk 5745 c609719bSwdenkExample: install the image to address 0x40100000 (which on the 5746 c609719bSwdenkTQM8xxL is in the first Flash bank): 5747 c609719bSwdenk 5748 c609719bSwdenk => erase 40100000 401FFFFF 5749 c609719bSwdenk 5750 c609719bSwdenk .......... done 5751 c609719bSwdenk Erased 8 sectors 5752 c609719bSwdenk 5753 c609719bSwdenk => loads 40100000 5754 c609719bSwdenk ## Ready for S-Record download ... 5755 c609719bSwdenk ~>examples/image.srec 5756 c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 12 13 ... 5757 c609719bSwdenk ... 5758 c609719bSwdenk 15989 15990 15991 15992 5759 c609719bSwdenk [file transfer complete] 5760 c609719bSwdenk [connected] 5761 c609719bSwdenk ## Start Addr = 0x00000000 5762 c609719bSwdenk 5763 c609719bSwdenk 5764 c609719bSwdenkYou can check the success of the download using the 'iminfo' command; 5765 c609719bSwdenkthis includes a checksum verification so you can be sure no data 5766 c609719bSwdenkcorruption happened: 5767 c609719bSwdenk 5768 c609719bSwdenk => imi 40100000 5769 c609719bSwdenk 5770 c609719bSwdenk ## Checking Image at 40100000 ... 5771 c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5772 c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5773 c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5774 c609719bSwdenk Load Address: 00000000 5775 c609719bSwdenk Entry Point: 0000000c 5776 c609719bSwdenk Verifying Checksum ... OK 5777 c609719bSwdenk 5778 c609719bSwdenk 5779 c609719bSwdenkBoot Linux: 5780 c609719bSwdenk----------- 5781 c609719bSwdenk 5782 c609719bSwdenkThe "bootm" command is used to boot an application that is stored in 5783 c609719bSwdenkmemory (RAM or Flash). In case of a Linux kernel image, the contents 5784 c609719bSwdenkof the "bootargs" environment variable is passed to the kernel as 5785 c609719bSwdenkparameters. You can check and modify this variable using the 5786 c609719bSwdenk"printenv" and "setenv" commands: 5787 c609719bSwdenk 5788 c609719bSwdenk 5789 c609719bSwdenk => printenv bootargs 5790 c609719bSwdenk bootargs=root=/dev/ram 5791 c609719bSwdenk 5792 c609719bSwdenk => setenv bootargs root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5793 c609719bSwdenk 5794 c609719bSwdenk => printenv bootargs 5795 c609719bSwdenk bootargs=root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5796 c609719bSwdenk 5797 c609719bSwdenk => bootm 40020000 5798 c609719bSwdenk ## Booting Linux kernel at 40020000 ... 5799 c609719bSwdenk Image Name: 2.2.13 for NFS on TQM850L 5800 c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5801 c609719bSwdenk Data Size: 381681 Bytes = 372 kB = 0 MB 5802 c609719bSwdenk Load Address: 00000000 5803 c609719bSwdenk Entry Point: 0000000c 5804 c609719bSwdenk Verifying Checksum ... OK 5805 c609719bSwdenk Uncompressing Kernel Image ... OK 5806 c609719bSwdenk 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 5807 c609719bSwdenk Boot arguments: root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5808 c609719bSwdenk time_init: decrementer frequency = 187500000/60 5809 c609719bSwdenk Calibrating delay loop... 49.77 BogoMIPS 5810 c609719bSwdenk Memory: 15208k available (700k kernel code, 444k data, 32k init) [c0000000,c1000000] 5811 c609719bSwdenk ... 5812 c609719bSwdenk 5813 11ccc33fSMarcel ZiswilerIf you want to boot a Linux kernel with initial RAM disk, you pass 5814 7152b1d0Swdenkthe memory addresses of both the kernel and the initrd image (PPBCOOT 5815 c609719bSwdenkformat!) to the "bootm" command: 5816 c609719bSwdenk 5817 c609719bSwdenk => imi 40100000 40200000 5818 c609719bSwdenk 5819 c609719bSwdenk ## Checking Image at 40100000 ... 5820 c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5821 c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5822 c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5823 c609719bSwdenk Load Address: 00000000 5824 c609719bSwdenk Entry Point: 0000000c 5825 c609719bSwdenk Verifying Checksum ... OK 5826 c609719bSwdenk 5827 c609719bSwdenk ## Checking Image at 40200000 ... 5828 c609719bSwdenk Image Name: Simple Ramdisk Image 5829 c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5830 c609719bSwdenk Data Size: 566530 Bytes = 553 kB = 0 MB 5831 c609719bSwdenk Load Address: 00000000 5832 c609719bSwdenk Entry Point: 00000000 5833 c609719bSwdenk Verifying Checksum ... OK 5834 c609719bSwdenk 5835 c609719bSwdenk => bootm 40100000 40200000 5836 c609719bSwdenk ## Booting Linux kernel at 40100000 ... 5837 c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5838 c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5839 c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5840 c609719bSwdenk Load Address: 00000000 5841 c609719bSwdenk Entry Point: 0000000c 5842 c609719bSwdenk Verifying Checksum ... OK 5843 c609719bSwdenk Uncompressing Kernel Image ... OK 5844 c609719bSwdenk ## Loading RAMDisk Image at 40200000 ... 5845 c609719bSwdenk Image Name: Simple Ramdisk Image 5846 c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5847 c609719bSwdenk Data Size: 566530 Bytes = 553 kB = 0 MB 5848 c609719bSwdenk Load Address: 00000000 5849 c609719bSwdenk Entry Point: 00000000 5850 c609719bSwdenk Verifying Checksum ... OK 5851 c609719bSwdenk Loading Ramdisk ... OK 5852 c609719bSwdenk 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 5853 c609719bSwdenk Boot arguments: root=/dev/ram 5854 c609719bSwdenk time_init: decrementer frequency = 187500000/60 5855 c609719bSwdenk Calibrating delay loop... 49.77 BogoMIPS 5856 c609719bSwdenk ... 5857 c609719bSwdenk RAMDISK: Compressed image found at block 0 5858 c609719bSwdenk VFS: Mounted root (ext2 filesystem). 5859 c609719bSwdenk 5860 c609719bSwdenk bash# 5861 c609719bSwdenk 5862 0267768eSMatthew McClintockBoot Linux and pass a flat device tree: 5863 0267768eSMatthew McClintock----------- 5864 0267768eSMatthew McClintock 5865 0267768eSMatthew McClintockFirst, U-Boot must be compiled with the appropriate defines. See the section 5866 0267768eSMatthew McClintocktitled "Linux Kernel Interface" above for a more in depth explanation. The 5867 0267768eSMatthew McClintockfollowing is an example of how to start a kernel and pass an updated 5868 0267768eSMatthew McClintockflat device tree: 5869 0267768eSMatthew McClintock 5870 0267768eSMatthew McClintock=> print oftaddr 5871 0267768eSMatthew McClintockoftaddr=0x300000 5872 0267768eSMatthew McClintock=> print oft 5873 0267768eSMatthew McClintockoft=oftrees/mpc8540ads.dtb 5874 0267768eSMatthew McClintock=> tftp $oftaddr $oft 5875 0267768eSMatthew McClintockSpeed: 1000, full duplex 5876 0267768eSMatthew McClintockUsing TSEC0 device 5877 0267768eSMatthew McClintockTFTP from server 192.168.1.1; our IP address is 192.168.1.101 5878 0267768eSMatthew McClintockFilename 'oftrees/mpc8540ads.dtb'. 5879 0267768eSMatthew McClintockLoad address: 0x300000 5880 0267768eSMatthew McClintockLoading: # 5881 0267768eSMatthew McClintockdone 5882 0267768eSMatthew McClintockBytes transferred = 4106 (100a hex) 5883 0267768eSMatthew McClintock=> tftp $loadaddr $bootfile 5884 0267768eSMatthew McClintockSpeed: 1000, full duplex 5885 0267768eSMatthew McClintockUsing TSEC0 device 5886 0267768eSMatthew McClintockTFTP from server 192.168.1.1; our IP address is 192.168.1.2 5887 0267768eSMatthew McClintockFilename 'uImage'. 5888 0267768eSMatthew McClintockLoad address: 0x200000 5889 0267768eSMatthew McClintockLoading:############ 5890 0267768eSMatthew McClintockdone 5891 0267768eSMatthew McClintockBytes transferred = 1029407 (fb51f hex) 5892 0267768eSMatthew McClintock=> print loadaddr 5893 0267768eSMatthew McClintockloadaddr=200000 5894 0267768eSMatthew McClintock=> print oftaddr 5895 0267768eSMatthew McClintockoftaddr=0x300000 5896 0267768eSMatthew McClintock=> bootm $loadaddr - $oftaddr 5897 0267768eSMatthew McClintock## Booting image at 00200000 ... 5898 0267768eSMatthew McClintock Image Name: Linux-2.6.17-dirty 5899 0267768eSMatthew McClintock Image Type: PowerPC Linux Kernel Image (gzip compressed) 5900 0267768eSMatthew McClintock Data Size: 1029343 Bytes = 1005.2 kB 5901 0267768eSMatthew McClintock Load Address: 00000000 5902 0267768eSMatthew McClintock Entry Point: 00000000 5903 0267768eSMatthew McClintock Verifying Checksum ... OK 5904 0267768eSMatthew McClintock Uncompressing Kernel Image ... OK 5905 0267768eSMatthew McClintockBooting using flat device tree at 0x300000 5906 0267768eSMatthew McClintockUsing MPC85xx ADS machine description 5907 0267768eSMatthew McClintockMemory CAM mapping: CAM0=256Mb, CAM1=256Mb, CAM2=0Mb residual: 0Mb 5908 0267768eSMatthew McClintock[snip] 5909 0267768eSMatthew McClintock 5910 0267768eSMatthew McClintock 5911 6069ff26SwdenkMore About U-Boot Image Types: 5912 6069ff26Swdenk------------------------------ 5913 6069ff26Swdenk 5914 6069ff26SwdenkU-Boot supports the following image types: 5915 6069ff26Swdenk 5916 6069ff26Swdenk "Standalone Programs" are directly runnable in the environment 5917 6069ff26Swdenk provided by U-Boot; it is expected that (if they behave 5918 6069ff26Swdenk well) you can continue to work in U-Boot after return from 5919 6069ff26Swdenk the Standalone Program. 5920 6069ff26Swdenk "OS Kernel Images" are usually images of some Embedded OS which 5921 6069ff26Swdenk will take over control completely. Usually these programs 5922 6069ff26Swdenk will install their own set of exception handlers, device 5923 6069ff26Swdenk drivers, set up the MMU, etc. - this means, that you cannot 5924 6069ff26Swdenk expect to re-enter U-Boot except by resetting the CPU. 5925 6069ff26Swdenk "RAMDisk Images" are more or less just data blocks, and their 5926 6069ff26Swdenk parameters (address, size) are passed to an OS kernel that is 5927 6069ff26Swdenk being started. 5928 6069ff26Swdenk "Multi-File Images" contain several images, typically an OS 5929 6069ff26Swdenk (Linux) kernel image and one or more data images like 5930 6069ff26Swdenk RAMDisks. This construct is useful for instance when you want 5931 6069ff26Swdenk to boot over the network using BOOTP etc., where the boot 5932 6069ff26Swdenk server provides just a single image file, but you want to get 5933 6069ff26Swdenk for instance an OS kernel and a RAMDisk image. 5934 6069ff26Swdenk 5935 6069ff26Swdenk "Multi-File Images" start with a list of image sizes, each 5936 6069ff26Swdenk image size (in bytes) specified by an "uint32_t" in network 5937 6069ff26Swdenk byte order. This list is terminated by an "(uint32_t)0". 5938 6069ff26Swdenk Immediately after the terminating 0 follow the images, one by 5939 6069ff26Swdenk one, all aligned on "uint32_t" boundaries (size rounded up to 5940 6069ff26Swdenk a multiple of 4 bytes). 5941 6069ff26Swdenk 5942 6069ff26Swdenk "Firmware Images" are binary images containing firmware (like 5943 6069ff26Swdenk U-Boot or FPGA images) which usually will be programmed to 5944 6069ff26Swdenk flash memory. 5945 6069ff26Swdenk 5946 6069ff26Swdenk "Script files" are command sequences that will be executed by 5947 6069ff26Swdenk U-Boot's command interpreter; this feature is especially 5948 6069ff26Swdenk useful when you configure U-Boot to use a real shell (hush) 5949 6069ff26Swdenk as command interpreter. 5950 6069ff26Swdenk 5951 44f074c7SMarek VasutBooting the Linux zImage: 5952 44f074c7SMarek Vasut------------------------- 5953 44f074c7SMarek Vasut 5954 44f074c7SMarek VasutOn some platforms, it's possible to boot Linux zImage. This is done 5955 44f074c7SMarek Vasutusing the "bootz" command. The syntax of "bootz" command is the same 5956 44f074c7SMarek Vasutas the syntax of "bootm" command. 5957 44f074c7SMarek Vasut 5958 8ac28563STom RiniNote, defining the CONFIG_SUPPORT_RAW_INITRD allows user to supply 5959 017e1f3fSMarek Vasutkernel with raw initrd images. The syntax is slightly different, the 5960 017e1f3fSMarek Vasutaddress of the initrd must be augmented by it's size, in the following 5961 017e1f3fSMarek Vasutformat: "<initrd addres>:<initrd size>". 5962 017e1f3fSMarek Vasut 5963 c609719bSwdenk 5964 c609719bSwdenkStandalone HOWTO: 5965 c609719bSwdenk================= 5966 c609719bSwdenk 5967 c609719bSwdenkOne of the features of U-Boot is that you can dynamically load and 5968 c609719bSwdenkrun "standalone" applications, which can use some resources of 5969 c609719bSwdenkU-Boot like console I/O functions or interrupt services. 5970 c609719bSwdenk 5971 c609719bSwdenkTwo simple examples are included with the sources: 5972 c609719bSwdenk 5973 c609719bSwdenk"Hello World" Demo: 5974 c609719bSwdenk------------------- 5975 c609719bSwdenk 5976 c609719bSwdenk'examples/hello_world.c' contains a small "Hello World" Demo 5977 c609719bSwdenkapplication; it is automatically compiled when you build U-Boot. 5978 c609719bSwdenkIt's configured to run at address 0x00040004, so you can play with it 5979 c609719bSwdenklike that: 5980 c609719bSwdenk 5981 c609719bSwdenk => loads 5982 c609719bSwdenk ## Ready for S-Record download ... 5983 c609719bSwdenk ~>examples/hello_world.srec 5984 c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 ... 5985 c609719bSwdenk [file transfer complete] 5986 c609719bSwdenk [connected] 5987 c609719bSwdenk ## Start Addr = 0x00040004 5988 c609719bSwdenk 5989 c609719bSwdenk => go 40004 Hello World! This is a test. 5990 c609719bSwdenk ## Starting application at 0x00040004 ... 5991 c609719bSwdenk Hello World 5992 c609719bSwdenk argc = 7 5993 c609719bSwdenk argv[0] = "40004" 5994 c609719bSwdenk argv[1] = "Hello" 5995 c609719bSwdenk argv[2] = "World!" 5996 c609719bSwdenk argv[3] = "This" 5997 c609719bSwdenk argv[4] = "is" 5998 c609719bSwdenk argv[5] = "a" 5999 c609719bSwdenk argv[6] = "test." 6000 c609719bSwdenk argv[7] = "<NULL>" 6001 c609719bSwdenk Hit any key to exit ... 6002 c609719bSwdenk 6003 c609719bSwdenk ## Application terminated, rc = 0x0 6004 c609719bSwdenk 6005 c609719bSwdenkAnother example, which demonstrates how to register a CPM interrupt 6006 c609719bSwdenkhandler with the U-Boot code, can be found in 'examples/timer.c'. 6007 c609719bSwdenkHere, a CPM timer is set up to generate an interrupt every second. 6008 c609719bSwdenkThe interrupt service routine is trivial, just printing a '.' 6009 c609719bSwdenkcharacter, but this is just a demo program. The application can be 6010 c609719bSwdenkcontrolled by the following keys: 6011 c609719bSwdenk 6012 c609719bSwdenk ? - print current values og the CPM Timer registers 6013 c609719bSwdenk b - enable interrupts and start timer 6014 c609719bSwdenk e - stop timer and disable interrupts 6015 c609719bSwdenk q - quit application 6016 c609719bSwdenk 6017 c609719bSwdenk => loads 6018 c609719bSwdenk ## Ready for S-Record download ... 6019 c609719bSwdenk ~>examples/timer.srec 6020 c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 ... 6021 c609719bSwdenk [file transfer complete] 6022 c609719bSwdenk [connected] 6023 c609719bSwdenk ## Start Addr = 0x00040004 6024 c609719bSwdenk 6025 c609719bSwdenk => go 40004 6026 c609719bSwdenk ## Starting application at 0x00040004 ... 6027 c609719bSwdenk TIMERS=0xfff00980 6028 c609719bSwdenk Using timer 1 6029 c609719bSwdenk tgcr @ 0xfff00980, tmr @ 0xfff00990, trr @ 0xfff00994, tcr @ 0xfff00998, tcn @ 0xfff0099c, ter @ 0xfff009b0 6030 c609719bSwdenk 6031 c609719bSwdenkHit 'b': 6032 c609719bSwdenk [q, b, e, ?] Set interval 1000000 us 6033 c609719bSwdenk Enabling timer 6034 c609719bSwdenkHit '?': 6035 c609719bSwdenk [q, b, e, ?] ........ 6036 c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0xef6, ter=0x0 6037 c609719bSwdenkHit '?': 6038 c609719bSwdenk [q, b, e, ?] . 6039 c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x2ad4, ter=0x0 6040 c609719bSwdenkHit '?': 6041 c609719bSwdenk [q, b, e, ?] . 6042 c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x1efc, ter=0x0 6043 c609719bSwdenkHit '?': 6044 c609719bSwdenk [q, b, e, ?] . 6045 c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x169d, ter=0x0 6046 c609719bSwdenkHit 'e': 6047 c609719bSwdenk [q, b, e, ?] ...Stopping timer 6048 c609719bSwdenkHit 'q': 6049 c609719bSwdenk [q, b, e, ?] ## Application terminated, rc = 0x0 6050 c609719bSwdenk 6051 c609719bSwdenk 6052 85ec0bccSwdenkMinicom warning: 6053 85ec0bccSwdenk================ 6054 85ec0bccSwdenk 6055 7152b1d0SwdenkOver time, many people have reported problems when trying to use the 6056 85ec0bccSwdenk"minicom" terminal emulation program for serial download. I (wd) 6057 85ec0bccSwdenkconsider minicom to be broken, and recommend not to use it. Under 6058 f07771ccSwdenkUnix, I recommend to use C-Kermit for general purpose use (and 6059 85ec0bccSwdenkespecially for kermit binary protocol download ("loadb" command), and 6060 e53515a2SKarl O. Pincuse "cu" for S-Record download ("loads" command). See 6061 e53515a2SKarl O. Pinchttp://www.denx.de/wiki/view/DULG/SystemSetup#Section_4.3. 6062 e53515a2SKarl O. Pincfor help with kermit. 6063 e53515a2SKarl O. Pinc 6064 85ec0bccSwdenk 6065 52f52c14SwdenkNevertheless, if you absolutely want to use it try adding this 6066 52f52c14Swdenkconfiguration to your "File transfer protocols" section: 6067 52f52c14Swdenk 6068 52f52c14Swdenk Name Program Name U/D FullScr IO-Red. Multi 6069 52f52c14Swdenk X kermit /usr/bin/kermit -i -l %l -s Y U Y N N 6070 52f52c14Swdenk Y kermit /usr/bin/kermit -i -l %l -r N D Y N N 6071 52f52c14Swdenk 6072 52f52c14Swdenk 6073 c609719bSwdenkNetBSD Notes: 6074 c609719bSwdenk============= 6075 c609719bSwdenk 6076 c609719bSwdenkStarting at version 0.9.2, U-Boot supports NetBSD both as host 6077 c609719bSwdenk(build U-Boot) and target system (boots NetBSD/mpc8xx). 6078 c609719bSwdenk 6079 c609719bSwdenkBuilding requires a cross environment; it is known to work on 6080 c609719bSwdenkNetBSD/i386 with the cross-powerpc-netbsd-1.3 package (you will also 6081 c609719bSwdenkneed gmake since the Makefiles are not compatible with BSD make). 6082 c609719bSwdenkNote that the cross-powerpc package does not install include files; 6083 c609719bSwdenkattempting to build U-Boot will fail because <machine/ansi.h> is 6084 c609719bSwdenkmissing. This file has to be installed and patched manually: 6085 c609719bSwdenk 6086 c609719bSwdenk # cd /usr/pkg/cross/powerpc-netbsd/include 6087 c609719bSwdenk # mkdir powerpc 6088 c609719bSwdenk # ln -s powerpc machine 6089 c609719bSwdenk # cp /usr/src/sys/arch/powerpc/include/ansi.h powerpc/ansi.h 6090 c609719bSwdenk # ${EDIT} powerpc/ansi.h ## must remove __va_list, _BSD_VA_LIST 6091 c609719bSwdenk 6092 c609719bSwdenkNative builds *don't* work due to incompatibilities between native 6093 c609719bSwdenkand U-Boot include files. 6094 c609719bSwdenk 6095 c609719bSwdenkBooting assumes that (the first part of) the image booted is a 6096 c609719bSwdenkstage-2 loader which in turn loads and then invokes the kernel 6097 c609719bSwdenkproper. Loader sources will eventually appear in the NetBSD source 6098 c609719bSwdenktree (probably in sys/arc/mpc8xx/stand/u-boot_stage2/); in the 6099 2a8af187Swdenkmeantime, see ftp://ftp.denx.de/pub/u-boot/ppcboot_stage2.tar.gz 6100 c609719bSwdenk 6101 c609719bSwdenk 6102 c609719bSwdenkImplementation Internals: 6103 c609719bSwdenk========================= 6104 c609719bSwdenk 6105 c609719bSwdenkThe following is not intended to be a complete description of every 6106 c609719bSwdenkimplementation detail. However, it should help to understand the 6107 c609719bSwdenkinner workings of U-Boot and make it easier to port it to custom 6108 c609719bSwdenkhardware. 6109 c609719bSwdenk 6110 c609719bSwdenk 6111 c609719bSwdenkInitial Stack, Global Data: 6112 c609719bSwdenk--------------------------- 6113 c609719bSwdenk 6114 c609719bSwdenkThe implementation of U-Boot is complicated by the fact that U-Boot 6115 c609719bSwdenkstarts running out of ROM (flash memory), usually without access to 6116 c609719bSwdenksystem RAM (because the memory controller is not initialized yet). 6117 c609719bSwdenkThis means that we don't have writable Data or BSS segments, and BSS 6118 c609719bSwdenkis not initialized as zero. To be able to get a C environment working 6119 c609719bSwdenkat all, we have to allocate at least a minimal stack. Implementation 6120 c609719bSwdenkoptions for this are defined and restricted by the CPU used: Some CPU 6121 c609719bSwdenkmodels provide on-chip memory (like the IMMR area on MPC8xx and 6122 c609719bSwdenkMPC826x processors), on others (parts of) the data cache can be 6123 c609719bSwdenklocked as (mis-) used as memory, etc. 6124 c609719bSwdenk 6125 7152b1d0Swdenk Chris Hallinan posted a good summary of these issues to the 6126 0668236bSWolfgang Denk U-Boot mailing list: 6127 43d9616cSwdenk 6128 43d9616cSwdenk Subject: RE: [U-Boot-Users] RE: More On Memory Bank x (nothingness)? 6129 43d9616cSwdenk From: "Chris Hallinan" <clh@net1plus.com> 6130 43d9616cSwdenk Date: Mon, 10 Feb 2003 16:43:46 -0500 (22:43 MET) 6131 43d9616cSwdenk ... 6132 43d9616cSwdenk 6133 43d9616cSwdenk Correct me if I'm wrong, folks, but the way I understand it 6134 43d9616cSwdenk is this: Using DCACHE as initial RAM for Stack, etc, does not 6135 43d9616cSwdenk require any physical RAM backing up the cache. The cleverness 6136 43d9616cSwdenk is that the cache is being used as a temporary supply of 6137 43d9616cSwdenk necessary storage before the SDRAM controller is setup. It's 6138 11ccc33fSMarcel Ziswiler beyond the scope of this list to explain the details, but you 6139 43d9616cSwdenk can see how this works by studying the cache architecture and 6140 43d9616cSwdenk operation in the architecture and processor-specific manuals. 6141 43d9616cSwdenk 6142 43d9616cSwdenk OCM is On Chip Memory, which I believe the 405GP has 4K. It 6143 43d9616cSwdenk is another option for the system designer to use as an 6144 11ccc33fSMarcel Ziswiler initial stack/RAM area prior to SDRAM being available. Either 6145 43d9616cSwdenk option should work for you. Using CS 4 should be fine if your 6146 43d9616cSwdenk board designers haven't used it for something that would 6147 43d9616cSwdenk cause you grief during the initial boot! It is frequently not 6148 43d9616cSwdenk used. 6149 43d9616cSwdenk 6150 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_RAM_ADDR should be somewhere that won't interfere 6151 43d9616cSwdenk with your processor/board/system design. The default value 6152 43d9616cSwdenk you will find in any recent u-boot distribution in 6153 8a316c9bSStefan Roese walnut.h should work for you. I'd set it to a value larger 6154 43d9616cSwdenk than your SDRAM module. If you have a 64MB SDRAM module, set 6155 43d9616cSwdenk it above 400_0000. Just make sure your board has no resources 6156 43d9616cSwdenk that are supposed to respond to that address! That code in 6157 43d9616cSwdenk start.S has been around a while and should work as is when 6158 43d9616cSwdenk you get the config right. 6159 43d9616cSwdenk 6160 43d9616cSwdenk -Chris Hallinan 6161 43d9616cSwdenk DS4.COM, Inc. 6162 43d9616cSwdenk 6163 c609719bSwdenkIt is essential to remember this, since it has some impact on the C 6164 c609719bSwdenkcode for the initialization procedures: 6165 c609719bSwdenk 6166 c609719bSwdenk* Initialized global data (data segment) is read-only. Do not attempt 6167 c609719bSwdenk to write it. 6168 c609719bSwdenk 6169 11ccc33fSMarcel Ziswiler* Do not use any uninitialized global data (or implicitely initialized 6170 c609719bSwdenk as zero data - BSS segment) at all - this is undefined, initiali- 6171 7152b1d0Swdenk zation is performed later (when relocating to RAM). 6172 c609719bSwdenk 6173 c609719bSwdenk* Stack space is very limited. Avoid big data buffers or things like 6174 c609719bSwdenk that. 6175 c609719bSwdenk 6176 c609719bSwdenkHaving only the stack as writable memory limits means we cannot use 6177 c609719bSwdenknormal global data to share information beween the code. But it 6178 c609719bSwdenkturned out that the implementation of U-Boot can be greatly 6179 c609719bSwdenksimplified by making a global data structure (gd_t) available to all 6180 c609719bSwdenkfunctions. We could pass a pointer to this data as argument to _all_ 6181 c609719bSwdenkfunctions, but this would bloat the code. Instead we use a feature of 6182 c609719bSwdenkthe GCC compiler (Global Register Variables) to share the data: we 6183 c609719bSwdenkplace a pointer (gd) to the global data into a register which we 6184 c609719bSwdenkreserve for this purpose. 6185 c609719bSwdenk 6186 7152b1d0SwdenkWhen choosing a register for such a purpose we are restricted by the 6187 c609719bSwdenkrelevant (E)ABI specifications for the current architecture, and by 6188 c609719bSwdenkGCC's implementation. 6189 c609719bSwdenk 6190 c609719bSwdenkFor PowerPC, the following registers have specific use: 6191 c609719bSwdenk R1: stack pointer 6192 e7670f6cSWolfgang Denk R2: reserved for system use 6193 c609719bSwdenk R3-R4: parameter passing and return values 6194 c609719bSwdenk R5-R10: parameter passing 6195 c609719bSwdenk R13: small data area pointer 6196 c609719bSwdenk R30: GOT pointer 6197 c609719bSwdenk R31: frame pointer 6198 c609719bSwdenk 6199 e6bee808SJoakim Tjernlund (U-Boot also uses R12 as internal GOT pointer. r12 6200 e6bee808SJoakim Tjernlund is a volatile register so r12 needs to be reset when 6201 e6bee808SJoakim Tjernlund going back and forth between asm and C) 6202 c609719bSwdenk 6203 e7670f6cSWolfgang Denk ==> U-Boot will use R2 to hold a pointer to the global data 6204 c609719bSwdenk 6205 c609719bSwdenk Note: on PPC, we could use a static initializer (since the 6206 c609719bSwdenk address of the global data structure is known at compile time), 6207 c609719bSwdenk but it turned out that reserving a register results in somewhat 6208 c609719bSwdenk smaller code - although the code savings are not that big (on 6209 c609719bSwdenk average for all boards 752 bytes for the whole U-Boot image, 6210 c609719bSwdenk 624 text + 127 data). 6211 c609719bSwdenk 6212 c4db335cSRobin GetzOn Blackfin, the normal C ABI (except for P3) is followed as documented here: 6213 4c58eb55SMike Frysinger http://docs.blackfin.uclinux.org/doku.php?id=application_binary_interface 6214 4c58eb55SMike Frysinger 6215 c4db335cSRobin Getz ==> U-Boot will use P3 to hold a pointer to the global data 6216 4c58eb55SMike Frysinger 6217 c609719bSwdenkOn ARM, the following registers are used: 6218 c609719bSwdenk 6219 c609719bSwdenk R0: function argument word/integer result 6220 c609719bSwdenk R1-R3: function argument word 6221 12eba1b4SJeroen Hofstee R9: platform specific 6222 12eba1b4SJeroen Hofstee R10: stack limit (used only if stack checking is enabled) 6223 c609719bSwdenk R11: argument (frame) pointer 6224 c609719bSwdenk R12: temporary workspace 6225 c609719bSwdenk R13: stack pointer 6226 c609719bSwdenk R14: link register 6227 c609719bSwdenk R15: program counter 6228 c609719bSwdenk 6229 12eba1b4SJeroen Hofstee ==> U-Boot will use R9 to hold a pointer to the global data 6230 12eba1b4SJeroen Hofstee 6231 12eba1b4SJeroen Hofstee Note: on ARM, only R_ARM_RELATIVE relocations are supported. 6232 c609719bSwdenk 6233 0df01fd3SThomas ChouOn Nios II, the ABI is documented here: 6234 0df01fd3SThomas Chou http://www.altera.com/literature/hb/nios2/n2cpu_nii51016.pdf 6235 0df01fd3SThomas Chou 6236 0df01fd3SThomas Chou ==> U-Boot will use gp to hold a pointer to the global data 6237 0df01fd3SThomas Chou 6238 0df01fd3SThomas Chou Note: on Nios II, we give "-G0" option to gcc and don't use gp 6239 0df01fd3SThomas Chou to access small data sections, so gp is free. 6240 0df01fd3SThomas Chou 6241 afc1ce82SMacpaul LinOn NDS32, the following registers are used: 6242 afc1ce82SMacpaul Lin 6243 afc1ce82SMacpaul Lin R0-R1: argument/return 6244 afc1ce82SMacpaul Lin R2-R5: argument 6245 afc1ce82SMacpaul Lin R15: temporary register for assembler 6246 afc1ce82SMacpaul Lin R16: trampoline register 6247 afc1ce82SMacpaul Lin R28: frame pointer (FP) 6248 afc1ce82SMacpaul Lin R29: global pointer (GP) 6249 afc1ce82SMacpaul Lin R30: link register (LP) 6250 afc1ce82SMacpaul Lin R31: stack pointer (SP) 6251 afc1ce82SMacpaul Lin PC: program counter (PC) 6252 afc1ce82SMacpaul Lin 6253 afc1ce82SMacpaul Lin ==> U-Boot will use R10 to hold a pointer to the global data 6254 afc1ce82SMacpaul Lin 6255 d87080b7SWolfgang DenkNOTE: DECLARE_GLOBAL_DATA_PTR must be used with file-global scope, 6256 d87080b7SWolfgang Denkor current versions of GCC may "optimize" the code too much. 6257 c609719bSwdenk 6258 c609719bSwdenkMemory Management: 6259 c609719bSwdenk------------------ 6260 c609719bSwdenk 6261 c609719bSwdenkU-Boot runs in system state and uses physical addresses, i.e. the 6262 c609719bSwdenkMMU is not used either for address mapping nor for memory protection. 6263 c609719bSwdenk 6264 c609719bSwdenkThe available memory is mapped to fixed addresses using the memory 6265 c609719bSwdenkcontroller. In this process, a contiguous block is formed for each 6266 c609719bSwdenkmemory type (Flash, SDRAM, SRAM), even when it consists of several 6267 c609719bSwdenkphysical memory banks. 6268 c609719bSwdenk 6269 c609719bSwdenkU-Boot is installed in the first 128 kB of the first Flash bank (on 6270 c609719bSwdenkTQM8xxL modules this is the range 0x40000000 ... 0x4001FFFF). After 6271 c609719bSwdenkbooting and sizing and initializing DRAM, the code relocates itself 6272 c609719bSwdenkto the upper end of DRAM. Immediately below the U-Boot code some 6273 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARDmemory is reserved for use by malloc() [see CONFIG_SYS_MALLOC_LEN 6274 c609719bSwdenkconfiguration setting]. Below that, a structure with global Board 6275 c609719bSwdenkInfo data is placed, followed by the stack (growing downward). 6276 c609719bSwdenk 6277 c609719bSwdenkAdditionally, some exception handler code is copied to the low 8 kB 6278 c609719bSwdenkof DRAM (0x00000000 ... 0x00001FFF). 6279 c609719bSwdenk 6280 c609719bSwdenkSo a typical memory configuration with 16 MB of DRAM could look like 6281 c609719bSwdenkthis: 6282 c609719bSwdenk 6283 c609719bSwdenk 0x0000 0000 Exception Vector code 6284 c609719bSwdenk : 6285 c609719bSwdenk 0x0000 1FFF 6286 c609719bSwdenk 0x0000 2000 Free for Application Use 6287 c609719bSwdenk : 6288 c609719bSwdenk : 6289 c609719bSwdenk 6290 c609719bSwdenk : 6291 c609719bSwdenk : 6292 c609719bSwdenk 0x00FB FF20 Monitor Stack (Growing downward) 6293 c609719bSwdenk 0x00FB FFAC Board Info Data and permanent copy of global data 6294 c609719bSwdenk 0x00FC 0000 Malloc Arena 6295 c609719bSwdenk : 6296 c609719bSwdenk 0x00FD FFFF 6297 c609719bSwdenk 0x00FE 0000 RAM Copy of Monitor Code 6298 c609719bSwdenk ... eventually: LCD or video framebuffer 6299 c609719bSwdenk ... eventually: pRAM (Protected RAM - unchanged by reset) 6300 c609719bSwdenk 0x00FF FFFF [End of RAM] 6301 c609719bSwdenk 6302 c609719bSwdenk 6303 c609719bSwdenkSystem Initialization: 6304 c609719bSwdenk---------------------- 6305 c609719bSwdenk 6306 c609719bSwdenkIn the reset configuration, U-Boot starts at the reset entry point 6307 11ccc33fSMarcel Ziswiler(on most PowerPC systems at address 0x00000100). Because of the reset 6308 c609719bSwdenkconfiguration for CS0# this is a mirror of the onboard Flash memory. 6309 7152b1d0SwdenkTo be able to re-map memory U-Boot then jumps to its link address. 6310 c609719bSwdenkTo be able to implement the initialization code in C, a (small!) 6311 c609719bSwdenkinitial stack is set up in the internal Dual Ported RAM (in case CPUs 6312 c609719bSwdenkwhich provide such a feature like MPC8xx or MPC8260), or in a locked 6313 c609719bSwdenkpart of the data cache. After that, U-Boot initializes the CPU core, 6314 c609719bSwdenkthe caches and the SIU. 6315 c609719bSwdenk 6316 c609719bSwdenkNext, all (potentially) available memory banks are mapped using a 6317 c609719bSwdenkpreliminary mapping. For example, we put them on 512 MB boundaries 6318 c609719bSwdenk(multiples of 0x20000000: SDRAM on 0x00000000 and 0x20000000, Flash 6319 c609719bSwdenkon 0x40000000 and 0x60000000, SRAM on 0x80000000). Then UPM A is 6320 c609719bSwdenkprogrammed for SDRAM access. Using the temporary configuration, a 6321 c609719bSwdenksimple memory test is run that determines the size of the SDRAM 6322 c609719bSwdenkbanks. 6323 c609719bSwdenk 6324 c609719bSwdenkWhen there is more than one SDRAM bank, and the banks are of 6325 7152b1d0Swdenkdifferent size, the largest is mapped first. For equal size, the first 6326 c609719bSwdenkbank (CS2#) is mapped first. The first mapping is always for address 6327 c609719bSwdenk0x00000000, with any additional banks following immediately to create 6328 c609719bSwdenkcontiguous memory starting from 0. 6329 c609719bSwdenk 6330 c609719bSwdenkThen, the monitor installs itself at the upper end of the SDRAM area 6331 c609719bSwdenkand allocates memory for use by malloc() and for the global Board 6332 c609719bSwdenkInfo data; also, the exception vector code is copied to the low RAM 6333 c609719bSwdenkpages, and the final stack is set up. 6334 c609719bSwdenk 6335 c609719bSwdenkOnly after this relocation will you have a "normal" C environment; 6336 c609719bSwdenkuntil that you are restricted in several ways, mostly because you are 6337 c609719bSwdenkrunning from ROM, and because the code will have to be relocated to a 6338 c609719bSwdenknew address in RAM. 6339 c609719bSwdenk 6340 c609719bSwdenk 6341 c609719bSwdenkU-Boot Porting Guide: 6342 c609719bSwdenk---------------------- 6343 c609719bSwdenk 6344 c609719bSwdenk[Based on messages by Jerry Van Baren in the U-Boot-Users mailing 6345 6aff3115Swdenklist, October 2002] 6346 c609719bSwdenk 6347 c609719bSwdenk 6348 c609719bSwdenkint main(int argc, char *argv[]) 6349 c609719bSwdenk{ 6350 c609719bSwdenk sighandler_t no_more_time; 6351 c609719bSwdenk 6352 c609719bSwdenk signal(SIGALRM, no_more_time); 6353 c609719bSwdenk alarm(PROJECT_DEADLINE - toSec (3 * WEEK)); 6354 c609719bSwdenk 6355 c609719bSwdenk if (available_money > available_manpower) { 6356 6c3fef28SJerry Van Baren Pay consultant to port U-Boot; 6357 c609719bSwdenk return 0; 6358 c609719bSwdenk } 6359 c609719bSwdenk 6360 c609719bSwdenk Download latest U-Boot source; 6361 c609719bSwdenk 6362 0668236bSWolfgang Denk Subscribe to u-boot mailing list; 6363 6aff3115Swdenk 6364 6c3fef28SJerry Van Baren if (clueless) 6365 c609719bSwdenk email("Hi, I am new to U-Boot, how do I get started?"); 6366 c609719bSwdenk 6367 c609719bSwdenk while (learning) { 6368 c609719bSwdenk Read the README file in the top level directory; 6369 7cb22f97Swdenk Read http://www.denx.de/twiki/bin/view/DULG/Manual; 6370 6c3fef28SJerry Van Baren Read applicable doc/*.README; 6371 c609719bSwdenk Read the source, Luke; 6372 6c3fef28SJerry Van Baren /* find . -name "*.[chS]" | xargs grep -i <keyword> */ 6373 c609719bSwdenk } 6374 c609719bSwdenk 6375 6c3fef28SJerry Van Baren if (available_money > toLocalCurrency ($2500)) 6376 6c3fef28SJerry Van Baren Buy a BDI3000; 6377 6c3fef28SJerry Van Baren else 6378 c609719bSwdenk Add a lot of aggravation and time; 6379 c609719bSwdenk 6380 6c3fef28SJerry Van Baren if (a similar board exists) { /* hopefully... */ 6381 6c3fef28SJerry Van Baren cp -a board/<similar> board/<myboard> 6382 6c3fef28SJerry Van Baren cp include/configs/<similar>.h include/configs/<myboard>.h 6383 6c3fef28SJerry Van Baren } else { 6384 c609719bSwdenk Create your own board support subdirectory; 6385 6c3fef28SJerry Van Baren Create your own board include/configs/<myboard>.h file; 6386 6c3fef28SJerry Van Baren } 6387 6c3fef28SJerry Van Baren Edit new board/<myboard> files 6388 6c3fef28SJerry Van Baren Edit new include/configs/<myboard>.h 6389 c609719bSwdenk 6390 6c3fef28SJerry Van Baren while (!accepted) { 6391 c609719bSwdenk while (!running) { 6392 c609719bSwdenk do { 6393 c609719bSwdenk Add / modify source code; 6394 c609719bSwdenk } until (compiles); 6395 c609719bSwdenk Debug; 6396 c609719bSwdenk if (clueless) 6397 c609719bSwdenk email("Hi, I am having problems..."); 6398 c609719bSwdenk } 6399 6c3fef28SJerry Van Baren Send patch file to the U-Boot email list; 6400 6c3fef28SJerry Van Baren if (reasonable critiques) 6401 6c3fef28SJerry Van Baren Incorporate improvements from email list code review; 6402 6c3fef28SJerry Van Baren else 6403 6c3fef28SJerry Van Baren Defend code as written; 6404 6c3fef28SJerry Van Baren } 6405 c609719bSwdenk 6406 c609719bSwdenk return 0; 6407 c609719bSwdenk} 6408 c609719bSwdenk 6409 c609719bSwdenkvoid no_more_time (int sig) 6410 c609719bSwdenk{ 6411 c609719bSwdenk hire_a_guru(); 6412 c609719bSwdenk} 6413 c609719bSwdenk 6414 c609719bSwdenk 6415 c609719bSwdenkCoding Standards: 6416 c609719bSwdenk----------------- 6417 c609719bSwdenk 6418 c609719bSwdenkAll contributions to U-Boot should conform to the Linux kernel 6419 2c051651SDetlev Zundelcoding style; see the file "Documentation/CodingStyle" and the script 6420 7ca9296eSWolfgang Denk"scripts/Lindent" in your Linux kernel source directory. 6421 c609719bSwdenk 6422 2c051651SDetlev ZundelSource files originating from a different project (for example the 6423 2c051651SDetlev ZundelMTD subsystem) are generally exempt from these guidelines and are not 6424 2c051651SDetlev Zundelreformated to ease subsequent migration to newer versions of those 6425 2c051651SDetlev Zundelsources. 6426 2c051651SDetlev Zundel 6427 2c051651SDetlev ZundelPlease note that U-Boot is implemented in C (and to some small parts in 6428 2c051651SDetlev ZundelAssembler); no C++ is used, so please do not use C++ style comments (//) 6429 2c051651SDetlev Zundelin your code. 6430 c609719bSwdenk 6431 c178d3daSwdenkPlease also stick to the following formatting rules: 6432 180d3f74Swdenk- remove any trailing white space 6433 7ca9296eSWolfgang Denk- use TAB characters for indentation and vertical alignment, not spaces 6434 180d3f74Swdenk- make sure NOT to use DOS '\r\n' line feeds 6435 7ca9296eSWolfgang Denk- do not add more than 2 consecutive empty lines to source files 6436 180d3f74Swdenk- do not add trailing empty lines to source files 6437 180d3f74Swdenk 6438 c609719bSwdenkSubmissions which do not conform to the standards may be returned 6439 c609719bSwdenkwith a request to reformat the changes. 6440 c609719bSwdenk 6441 c609719bSwdenk 6442 c609719bSwdenkSubmitting Patches: 6443 c609719bSwdenk------------------- 6444 c609719bSwdenk 6445 c609719bSwdenkSince the number of patches for U-Boot is growing, we need to 6446 c609719bSwdenkestablish some rules. Submissions which do not conform to these rules 6447 c609719bSwdenkmay be rejected, even when they contain important and valuable stuff. 6448 c609719bSwdenk 6449 0d28f34bSMagnus LiljaPlease see http://www.denx.de/wiki/U-Boot/Patches for details. 6450 218ca724SWolfgang Denk 6451 0668236bSWolfgang DenkPatches shall be sent to the u-boot mailing list <u-boot@lists.denx.de>; 6452 0668236bSWolfgang Denksee http://lists.denx.de/mailman/listinfo/u-boot 6453 0668236bSWolfgang Denk 6454 c609719bSwdenkWhen you send a patch, please include the following information with 6455 c609719bSwdenkit: 6456 c609719bSwdenk 6457 c609719bSwdenk* For bug fixes: a description of the bug and how your patch fixes 6458 c609719bSwdenk this bug. Please try to include a way of demonstrating that the 6459 c609719bSwdenk patch actually fixes something. 6460 c609719bSwdenk 6461 c609719bSwdenk* For new features: a description of the feature and your 6462 c609719bSwdenk implementation. 6463 c609719bSwdenk 6464 c609719bSwdenk* A CHANGELOG entry as plaintext (separate from the patch) 6465 c609719bSwdenk 6466 c609719bSwdenk* For major contributions, your entry to the CREDITS file 6467 c609719bSwdenk 6468 27af930eSAlbert ARIBAUD* When you add support for a new board, don't forget to add a 6469 27af930eSAlbert ARIBAUD maintainer e-mail address to the boards.cfg file, too. 6470 c609719bSwdenk 6471 c609719bSwdenk* If your patch adds new configuration options, don't forget to 6472 c609719bSwdenk document these in the README file. 6473 c609719bSwdenk 6474 218ca724SWolfgang Denk* The patch itself. If you are using git (which is *strongly* 6475 218ca724SWolfgang Denk recommended) you can easily generate the patch using the 6476 7ca9296eSWolfgang Denk "git format-patch". If you then use "git send-email" to send it to 6477 218ca724SWolfgang Denk the U-Boot mailing list, you will avoid most of the common problems 6478 218ca724SWolfgang Denk with some other mail clients. 6479 c609719bSwdenk 6480 218ca724SWolfgang Denk If you cannot use git, use "diff -purN OLD NEW". If your version of 6481 218ca724SWolfgang Denk diff does not support these options, then get the latest version of 6482 218ca724SWolfgang Denk GNU diff. 6483 6dff5529Swdenk 6484 218ca724SWolfgang Denk The current directory when running this command shall be the parent 6485 218ca724SWolfgang Denk directory of the U-Boot source tree (i. e. please make sure that 6486 218ca724SWolfgang Denk your patch includes sufficient directory information for the 6487 218ca724SWolfgang Denk affected files). 6488 218ca724SWolfgang Denk 6489 218ca724SWolfgang Denk We prefer patches as plain text. MIME attachments are discouraged, 6490 218ca724SWolfgang Denk and compressed attachments must not be used. 6491 c609719bSwdenk 6492 52f52c14Swdenk* If one logical set of modifications affects or creates several 6493 52f52c14Swdenk files, all these changes shall be submitted in a SINGLE patch file. 6494 52f52c14Swdenk 6495 52f52c14Swdenk* Changesets that contain different, unrelated modifications shall be 6496 52f52c14Swdenk submitted as SEPARATE patches, one patch per changeset. 6497 52f52c14Swdenk 6498 52f52c14Swdenk 6499 c609719bSwdenkNotes: 6500 c609719bSwdenk 6501 c609719bSwdenk* Before sending the patch, run the MAKEALL script on your patched 6502 c609719bSwdenk source tree and make sure that no errors or warnings are reported 6503 c609719bSwdenk for any of the boards. 6504 c609719bSwdenk 6505 c609719bSwdenk* Keep your modifications to the necessary minimum: A patch 6506 c609719bSwdenk containing several unrelated changes or arbitrary reformats will be 6507 c609719bSwdenk returned with a request to re-formatting / split it. 6508 c609719bSwdenk 6509 c609719bSwdenk* If you modify existing code, make sure that your new code does not 6510 c609719bSwdenk add to the memory footprint of the code ;-) Small is beautiful! 6511 c609719bSwdenk When adding new features, these should compile conditionally only 6512 c609719bSwdenk (using #ifdef), and the resulting code with the new feature 6513 c609719bSwdenk disabled must not need more memory than the old code without your 6514 c609719bSwdenk modification. 6515 90dc6704Swdenk 6516 0668236bSWolfgang Denk* Remember that there is a size limit of 100 kB per message on the 6517 0668236bSWolfgang Denk u-boot mailing list. Bigger patches will be moderated. If they are 6518 0668236bSWolfgang Denk reasonable and not too big, they will be acknowledged. But patches 6519 0668236bSWolfgang Denk bigger than the size limit should be avoided. 6520