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 8d321b81SPeter Tyser /arm Files generic to ARM architecture 136 8d321b81SPeter Tyser /cpu CPU specific files 137 8d321b81SPeter Tyser /arm720t Files specific to ARM 720 CPUs 138 8d321b81SPeter Tyser /arm920t Files specific to ARM 920 CPUs 139 6eb0921aSAndreas Bießmann /at91 Files specific to Atmel AT91RM9200 CPU 140 8d321b81SPeter Tyser /imx Files specific to Freescale MC9328 i.MX CPUs 141 8d321b81SPeter Tyser /s3c24x0 Files specific to Samsung S3C24X0 CPUs 142 8d321b81SPeter Tyser /arm926ejs Files specific to ARM 926 CPUs 143 8d321b81SPeter Tyser /arm1136 Files specific to ARM 1136 CPUs 144 8d321b81SPeter Tyser /pxa Files specific to Intel XScale PXA CPUs 145 8d321b81SPeter Tyser /sa1100 Files specific to Intel StrongARM SA1100 CPUs 146 8d321b81SPeter Tyser /lib Architecture specific library files 147 8d321b81SPeter Tyser /avr32 Files generic to AVR32 architecture 148 8d321b81SPeter Tyser /cpu CPU specific files 149 8d321b81SPeter Tyser /lib Architecture specific library files 150 8d321b81SPeter Tyser /blackfin Files generic to Analog Devices Blackfin architecture 151 8d321b81SPeter Tyser /cpu CPU specific files 152 8d321b81SPeter Tyser /lib Architecture specific library files 153 8d321b81SPeter Tyser /m68k Files generic to m68k architecture 154 8d321b81SPeter Tyser /cpu CPU specific files 155 8d321b81SPeter Tyser /mcf52x2 Files specific to Freescale ColdFire MCF52x2 CPUs 156 8d321b81SPeter Tyser /mcf5227x Files specific to Freescale ColdFire MCF5227x CPUs 157 8d321b81SPeter Tyser /mcf532x Files specific to Freescale ColdFire MCF5329 CPUs 158 8d321b81SPeter Tyser /mcf5445x Files specific to Freescale ColdFire MCF5445x CPUs 159 8d321b81SPeter Tyser /mcf547x_8x Files specific to Freescale ColdFire MCF547x_8x CPUs 160 8d321b81SPeter Tyser /lib Architecture specific library files 161 8d321b81SPeter Tyser /microblaze Files generic to microblaze architecture 162 8d321b81SPeter Tyser /cpu CPU specific files 163 8d321b81SPeter Tyser /lib Architecture specific library files 164 8d321b81SPeter Tyser /mips Files generic to MIPS architecture 165 8d321b81SPeter Tyser /cpu CPU specific files 166 92bbd64eSDaniel Schwierzeck /mips32 Files specific to MIPS32 CPUs 167 80421fccSXiangfu Liu /xburst Files specific to Ingenic XBurst CPUs 168 8d321b81SPeter Tyser /lib Architecture specific library files 169 afc1ce82SMacpaul Lin /nds32 Files generic to NDS32 architecture 170 afc1ce82SMacpaul Lin /cpu CPU specific files 171 afc1ce82SMacpaul Lin /n1213 Files specific to Andes Technology N1213 CPUs 172 afc1ce82SMacpaul Lin /lib Architecture specific library files 173 8d321b81SPeter Tyser /nios2 Files generic to Altera NIOS2 architecture 174 8d321b81SPeter Tyser /cpu CPU specific files 175 8d321b81SPeter Tyser /lib Architecture specific library files 176 33c7731bSRobert P. J. Day /openrisc Files generic to OpenRISC architecture 177 33c7731bSRobert P. J. Day /cpu CPU specific files 178 33c7731bSRobert P. J. Day /lib Architecture specific library files 179 a47a12beSStefan Roese /powerpc Files generic to PowerPC architecture 180 8d321b81SPeter Tyser /cpu CPU specific files 181 8d321b81SPeter Tyser /74xx_7xx Files specific to Freescale MPC74xx and 7xx CPUs 182 8d321b81SPeter Tyser /mpc5xx Files specific to Freescale MPC5xx CPUs 183 8d321b81SPeter Tyser /mpc5xxx Files specific to Freescale MPC5xxx CPUs 184 8d321b81SPeter Tyser /mpc8xx Files specific to Freescale MPC8xx CPUs 185 8d321b81SPeter Tyser /mpc824x Files specific to Freescale MPC824x CPUs 186 8d321b81SPeter Tyser /mpc8260 Files specific to Freescale MPC8260 CPUs 187 8d321b81SPeter Tyser /mpc85xx Files specific to Freescale MPC85xx CPUs 188 8d321b81SPeter Tyser /ppc4xx Files specific to AMCC PowerPC 4xx CPUs 189 8d321b81SPeter Tyser /lib Architecture specific library files 190 8d321b81SPeter Tyser /sh Files generic to SH architecture 191 8d321b81SPeter Tyser /cpu CPU specific files 192 8d321b81SPeter Tyser /sh2 Files specific to sh2 CPUs 193 8d321b81SPeter Tyser /sh3 Files specific to sh3 CPUs 194 8d321b81SPeter Tyser /sh4 Files specific to sh4 CPUs 195 8d321b81SPeter Tyser /lib Architecture specific library files 196 8d321b81SPeter Tyser /sparc Files generic to SPARC architecture 197 8d321b81SPeter Tyser /cpu CPU specific files 198 8d321b81SPeter Tyser /leon2 Files specific to Gaisler LEON2 SPARC CPU 199 8d321b81SPeter Tyser /leon3 Files specific to Gaisler LEON3 SPARC CPU 200 8d321b81SPeter Tyser /lib Architecture specific library files 201 33c7731bSRobert P. J. Day /x86 Files generic to x86 architecture 202 33c7731bSRobert P. J. Day /cpu CPU specific files 203 33c7731bSRobert P. J. Day /lib Architecture specific library files 204 8d321b81SPeter Tyser/api Machine/arch independent API for external apps 205 8d321b81SPeter Tyser/board Board dependent files 206 8d321b81SPeter Tyser/common Misc architecture independent functions 207 8d321b81SPeter Tyser/disk Code for disk drive partition handling 208 8d321b81SPeter Tyser/doc Documentation (don't expect too much) 209 8d321b81SPeter Tyser/drivers Commonly used device drivers 210 33c7731bSRobert P. J. Day/dts Contains Makefile for building internal U-Boot fdt. 211 8d321b81SPeter Tyser/examples Example code for standalone applications, etc. 212 8d321b81SPeter Tyser/fs Filesystem code (cramfs, ext2, jffs2, etc.) 213 8d321b81SPeter Tyser/include Header Files 214 8d321b81SPeter Tyser/lib Files generic to all architectures 215 8d321b81SPeter Tyser /libfdt Library files to support flattened device trees 216 8d321b81SPeter Tyser /lzma Library files to support LZMA decompression 217 8d321b81SPeter Tyser /lzo Library files to support LZO decompression 218 8d321b81SPeter Tyser/net Networking code 219 8d321b81SPeter Tyser/post Power On Self Test 220 33c7731bSRobert P. J. Day/spl Secondary Program Loader framework 221 8d321b81SPeter Tyser/tools Tools to build S-Record or U-Boot images, etc. 222 c609719bSwdenk 223 c609719bSwdenkSoftware Configuration: 224 c609719bSwdenk======================= 225 c609719bSwdenk 226 c609719bSwdenkConfiguration is usually done using C preprocessor defines; the 227 c609719bSwdenkrationale behind that is to avoid dead code whenever possible. 228 c609719bSwdenk 229 c609719bSwdenkThere are two classes of configuration variables: 230 c609719bSwdenk 231 c609719bSwdenk* Configuration _OPTIONS_: 232 c609719bSwdenk These are selectable by the user and have names beginning with 233 c609719bSwdenk "CONFIG_". 234 c609719bSwdenk 235 c609719bSwdenk* Configuration _SETTINGS_: 236 c609719bSwdenk These depend on the hardware etc. and should not be meddled with if 237 c609719bSwdenk you don't know what you're doing; they have names beginning with 238 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD "CONFIG_SYS_". 239 c609719bSwdenk 240 c609719bSwdenkLater we will add a configuration tool - probably similar to or even 241 c609719bSwdenkidentical to what's used for the Linux kernel. Right now, we have to 242 c609719bSwdenkdo the configuration by hand, which means creating some symbolic 243 c609719bSwdenklinks and editing some configuration files. We use the TQM8xxL boards 244 c609719bSwdenkas an example here. 245 c609719bSwdenk 246 c609719bSwdenk 247 c609719bSwdenkSelection of Processor Architecture and Board Type: 248 c609719bSwdenk--------------------------------------------------- 249 c609719bSwdenk 250 c609719bSwdenkFor all supported boards there are ready-to-use default 251 c609719bSwdenkconfigurations available; just type "make <board_name>_config". 252 c609719bSwdenk 253 c609719bSwdenkExample: For a TQM823L module type: 254 c609719bSwdenk 255 c609719bSwdenk cd u-boot 256 c609719bSwdenk make TQM823L_config 257 c609719bSwdenk 258 11ccc33fSMarcel ZiswilerFor the Cogent platform, you need to specify the CPU type as well; 259 c609719bSwdenke.g. "make cogent_mpc8xx_config". And also configure the cogent 260 c609719bSwdenkdirectory according to the instructions in cogent/README. 261 c609719bSwdenk 262 c609719bSwdenk 263 c609719bSwdenkConfiguration Options: 264 c609719bSwdenk---------------------- 265 c609719bSwdenk 266 c609719bSwdenkConfiguration depends on the combination of board and CPU type; all 267 c609719bSwdenksuch information is kept in a configuration file 268 c609719bSwdenk"include/configs/<board_name>.h". 269 c609719bSwdenk 270 c609719bSwdenkExample: For a TQM823L module, all configuration settings are in 271 c609719bSwdenk"include/configs/TQM823L.h". 272 c609719bSwdenk 273 c609719bSwdenk 274 7f6c2cbcSwdenkMany of the options are named exactly as the corresponding Linux 275 7f6c2cbcSwdenkkernel configuration options. The intention is to make it easier to 276 7f6c2cbcSwdenkbuild a config tool - later. 277 7f6c2cbcSwdenk 278 7f6c2cbcSwdenk 279 c609719bSwdenkThe following options need to be configured: 280 c609719bSwdenk 281 2628114eSKim Phillips- CPU Type: Define exactly one, e.g. CONFIG_MPC85XX. 282 c609719bSwdenk 283 2628114eSKim Phillips- Board Type: Define exactly one, e.g. CONFIG_MPC8540ADS. 284 6ccec449SWolfgang Denk 285 6ccec449SWolfgang Denk- CPU Daughterboard Type: (if CONFIG_ATSTK1000 is defined) 286 09ea0de0SHaavard Skinnemoen Define exactly one, e.g. CONFIG_ATSTK1002 287 c609719bSwdenk 288 c609719bSwdenk- CPU Module Type: (if CONFIG_COGENT is defined) 289 c609719bSwdenk Define exactly one of 290 c609719bSwdenk CONFIG_CMA286_60_OLD 291 c609719bSwdenk--- FIXME --- not tested yet: 292 c609719bSwdenk CONFIG_CMA286_60, CONFIG_CMA286_21, CONFIG_CMA286_60P, 293 c609719bSwdenk CONFIG_CMA287_23, CONFIG_CMA287_50 294 c609719bSwdenk 295 c609719bSwdenk- Motherboard Type: (if CONFIG_COGENT is defined) 296 c609719bSwdenk Define exactly one of 297 c609719bSwdenk CONFIG_CMA101, CONFIG_CMA102 298 c609719bSwdenk 299 c609719bSwdenk- Motherboard I/O Modules: (if CONFIG_COGENT is defined) 300 c609719bSwdenk Define one or more of 301 c609719bSwdenk CONFIG_CMA302 302 c609719bSwdenk 303 c609719bSwdenk- Motherboard Options: (if CONFIG_CMA101 or CONFIG_CMA102 are defined) 304 c609719bSwdenk Define one or more of 305 c609719bSwdenk CONFIG_LCD_HEARTBEAT - update a character position on 306 11ccc33fSMarcel Ziswiler the LCD display every second with 307 c609719bSwdenk a "rotator" |\-/|\-/ 308 c609719bSwdenk 309 2535d602Swdenk- Board flavour: (if CONFIG_MPC8260ADS is defined) 310 2535d602Swdenk CONFIG_ADSTYPE 311 2535d602Swdenk Possible values are: 312 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8260ADS - original MPC8260ADS 313 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8266ADS - MPC8266ADS 314 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PQ2FADS - PQ2FADS-ZU or PQ2FADS-VR 315 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8272ADS - MPC8272ADS 316 2535d602Swdenk 317 cf946c6dSLei Wen- Marvell Family Member 318 cf946c6dSLei Wen CONFIG_SYS_MVFS - define it if you want to enable 319 cf946c6dSLei Wen multiple fs option at one time 320 cf946c6dSLei Wen for marvell soc family 321 cf946c6dSLei Wen 322 c609719bSwdenk- MPC824X Family Member (if CONFIG_MPC824X is defined) 323 c609719bSwdenk Define exactly one of 324 c609719bSwdenk CONFIG_MPC8240, CONFIG_MPC8245 325 c609719bSwdenk 326 11ccc33fSMarcel Ziswiler- 8xx CPU Options: (if using an MPC8xx CPU) 327 66ca92a5Swdenk CONFIG_8xx_GCLK_FREQ - deprecated: CPU clock if 328 66ca92a5Swdenk get_gclk_freq() cannot work 329 5da627a4Swdenk e.g. if there is no 32KHz 330 5da627a4Swdenk reference PIT/RTC clock 331 66ca92a5Swdenk CONFIG_8xx_OSCLK - PLL input clock (either EXTCLK 332 66ca92a5Swdenk or XTAL/EXTAL) 333 c609719bSwdenk 334 66ca92a5Swdenk- 859/866/885 CPU options: (if using a MPC859 or MPC866 or MPC885 CPU): 335 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8xx_CPUCLK_MIN 336 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_8xx_CPUCLK_MAX 337 66ca92a5Swdenk CONFIG_8xx_CPUCLK_DEFAULT 338 75d1ea7fSwdenk See doc/README.MPC866 339 75d1ea7fSwdenk 340 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MEASURE_CPUCLK 341 75d1ea7fSwdenk 342 75d1ea7fSwdenk Define this to measure the actual CPU clock instead 343 75d1ea7fSwdenk of relying on the correctness of the configured 344 75d1ea7fSwdenk values. Mostly useful for board bringup to make sure 345 75d1ea7fSwdenk the PLL is locked at the intended frequency. Note 346 75d1ea7fSwdenk that this requires a (stable) reference clock (32 kHz 347 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD RTC clock or CONFIG_SYS_8XX_XIN) 348 75d1ea7fSwdenk 349 506f3918SHeiko Schocher CONFIG_SYS_DELAYED_ICACHE 350 506f3918SHeiko Schocher 351 506f3918SHeiko Schocher Define this option if you want to enable the 352 506f3918SHeiko Schocher ICache only when Code runs from RAM. 353 506f3918SHeiko Schocher 354 66412c63SKumar Gala- 85xx CPU Options: 355 ffd06e02SYork Sun CONFIG_SYS_PPC64 356 ffd06e02SYork Sun 357 ffd06e02SYork Sun Specifies that the core is a 64-bit PowerPC implementation (implements 358 ffd06e02SYork Sun the "64" category of the Power ISA). This is necessary for ePAPR 359 ffd06e02SYork Sun compliance, among other possible reasons. 360 ffd06e02SYork Sun 361 66412c63SKumar Gala CONFIG_SYS_FSL_TBCLK_DIV 362 66412c63SKumar Gala 363 66412c63SKumar Gala Defines the core time base clock divider ratio compared to the 364 66412c63SKumar Gala system clock. On most PQ3 devices this is 8, on newer QorIQ 365 66412c63SKumar Gala devices it can be 16 or 32. The ratio varies from SoC to Soc. 366 66412c63SKumar Gala 367 8f29084aSKumar Gala CONFIG_SYS_FSL_PCIE_COMPAT 368 8f29084aSKumar Gala 369 8f29084aSKumar Gala Defines the string to utilize when trying to match PCIe device 370 8f29084aSKumar Gala tree nodes for the given platform. 371 8f29084aSKumar Gala 372 afa6b551SPrabhakar Kushwaha CONFIG_SYS_PPC_E500_DEBUG_TLB 373 afa6b551SPrabhakar Kushwaha 374 afa6b551SPrabhakar Kushwaha Enables a temporary TLB entry to be used during boot to work 375 afa6b551SPrabhakar Kushwaha around limitations in e500v1 and e500v2 external debugger 376 afa6b551SPrabhakar Kushwaha support. This reduces the portions of the boot code where 377 afa6b551SPrabhakar Kushwaha breakpoints and single stepping do not work. The value of this 378 afa6b551SPrabhakar Kushwaha symbol should be set to the TLB1 entry to be used for this 379 afa6b551SPrabhakar Kushwaha purpose. 380 afa6b551SPrabhakar Kushwaha 381 33eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510 382 33eee330SScott Wood 383 33eee330SScott Wood Enables a workaround for erratum A004510. If set, 384 33eee330SScott Wood then CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV and 385 33eee330SScott Wood CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY must be set. 386 33eee330SScott Wood 387 33eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV 388 33eee330SScott Wood CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2 (optional) 389 33eee330SScott Wood 390 33eee330SScott Wood Defines one or two SoC revisions (low 8 bits of SVR) 391 33eee330SScott Wood for which the A004510 workaround should be applied. 392 33eee330SScott Wood 393 33eee330SScott Wood The rest of SVR is either not relevant to the decision 394 33eee330SScott Wood of whether the erratum is present (e.g. p2040 versus 395 33eee330SScott Wood p2041) or is implied by the build target, which controls 396 33eee330SScott Wood whether CONFIG_SYS_FSL_ERRATUM_A004510 is set. 397 33eee330SScott Wood 398 33eee330SScott Wood See Freescale App Note 4493 for more information about 399 33eee330SScott Wood this erratum. 400 33eee330SScott Wood 401 74fa22edSPrabhakar Kushwaha CONFIG_A003399_NOR_WORKAROUND 402 74fa22edSPrabhakar Kushwaha Enables a workaround for IFC erratum A003399. It is only 403 74fa22edSPrabhakar Kushwaha requred during NOR boot. 404 74fa22edSPrabhakar Kushwaha 405 33eee330SScott Wood CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY 406 33eee330SScott Wood 407 33eee330SScott Wood This is the value to write into CCSR offset 0x18600 408 33eee330SScott Wood according to the A004510 workaround. 409 33eee330SScott Wood 410 64501c66SPriyanka Jain CONFIG_SYS_FSL_DSP_DDR_ADDR 411 64501c66SPriyanka Jain This value denotes start offset of DDR memory which is 412 64501c66SPriyanka Jain connected exclusively to the DSP cores. 413 64501c66SPriyanka Jain 414 765b0bdbSPriyanka Jain CONFIG_SYS_FSL_DSP_M2_RAM_ADDR 415 765b0bdbSPriyanka Jain This value denotes start offset of M2 memory 416 765b0bdbSPriyanka Jain which is directly connected to the DSP core. 417 765b0bdbSPriyanka Jain 418 64501c66SPriyanka Jain CONFIG_SYS_FSL_DSP_M3_RAM_ADDR 419 64501c66SPriyanka Jain This value denotes start offset of M3 memory which is directly 420 64501c66SPriyanka Jain connected to the DSP core. 421 64501c66SPriyanka Jain 422 765b0bdbSPriyanka Jain CONFIG_SYS_FSL_DSP_CCSRBAR_DEFAULT 423 765b0bdbSPriyanka Jain This value denotes start offset of DSP CCSR space. 424 765b0bdbSPriyanka Jain 425 b135991aSPriyanka Jain CONFIG_SYS_FSL_SINGLE_SOURCE_CLK 426 b135991aSPriyanka Jain Single Source Clock is clocking mode present in some of FSL SoC's. 427 b135991aSPriyanka Jain In this mode, a single differential clock is used to supply 428 b135991aSPriyanka Jain clocks to the sysclock, ddrclock and usbclock. 429 b135991aSPriyanka Jain 430 6cb461b4SDaniel Schwierzeck- Generic CPU options: 431 6cb461b4SDaniel Schwierzeck CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN 432 6cb461b4SDaniel Schwierzeck 433 6cb461b4SDaniel Schwierzeck Defines the endianess of the CPU. Implementation of those 434 6cb461b4SDaniel Schwierzeck values is arch specific. 435 6cb461b4SDaniel Schwierzeck 436 5614e71bSYork Sun CONFIG_SYS_FSL_DDR 437 5614e71bSYork Sun Freescale DDR driver in use. This type of DDR controller is 438 5614e71bSYork Sun found in mpc83xx, mpc85xx, mpc86xx as well as some ARM core 439 5614e71bSYork Sun SoCs. 440 5614e71bSYork Sun 441 5614e71bSYork Sun CONFIG_SYS_FSL_DDR_ADDR 442 5614e71bSYork Sun Freescale DDR memory-mapped register base. 443 5614e71bSYork Sun 444 5614e71bSYork Sun CONFIG_SYS_FSL_DDR_EMU 445 5614e71bSYork Sun Specify emulator support for DDR. Some DDR features such as 446 5614e71bSYork Sun deskew training are not available. 447 5614e71bSYork Sun 448 5614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN1 449 5614e71bSYork Sun Freescale DDR1 controller. 450 5614e71bSYork Sun 451 5614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN2 452 5614e71bSYork Sun Freescale DDR2 controller. 453 5614e71bSYork Sun 454 5614e71bSYork Sun CONFIG_SYS_FSL_DDRC_GEN3 455 5614e71bSYork Sun Freescale DDR3 controller. 456 5614e71bSYork Sun 457 9ac4ffbdSYork Sun CONFIG_SYS_FSL_DDRC_ARM_GEN3 458 9ac4ffbdSYork Sun Freescale DDR3 controller for ARM-based SoCs. 459 9ac4ffbdSYork Sun 460 5614e71bSYork Sun CONFIG_SYS_FSL_DDR1 461 5614e71bSYork Sun Board config to use DDR1. It can be enabled for SoCs with 462 5614e71bSYork Sun Freescale DDR1 or DDR2 controllers, depending on the board 463 5614e71bSYork Sun implemetation. 464 5614e71bSYork Sun 465 5614e71bSYork Sun CONFIG_SYS_FSL_DDR2 466 5614e71bSYork Sun Board config to use DDR2. It can be eanbeld for SoCs with 467 5614e71bSYork Sun Freescale DDR2 or DDR3 controllers, depending on the board 468 5614e71bSYork Sun implementation. 469 5614e71bSYork Sun 470 5614e71bSYork Sun CONFIG_SYS_FSL_DDR3 471 5614e71bSYork Sun Board config to use DDR3. It can be enabled for SoCs with 472 5614e71bSYork Sun Freescale DDR3 controllers. 473 5614e71bSYork Sun 474 1b4175d6SPrabhakar Kushwaha CONFIG_SYS_FSL_IFC_BE 475 1b4175d6SPrabhakar Kushwaha Defines the IFC controller register space as Big Endian 476 1b4175d6SPrabhakar Kushwaha 477 1b4175d6SPrabhakar Kushwaha CONFIG_SYS_FSL_IFC_LE 478 1b4175d6SPrabhakar Kushwaha Defines the IFC controller register space as Little Endian 479 1b4175d6SPrabhakar Kushwaha 480 690e4258SPrabhakar Kushwaha CONFIG_SYS_FSL_PBL_PBI 481 690e4258SPrabhakar Kushwaha It enables addition of RCW (Power on reset configuration) in built image. 482 690e4258SPrabhakar Kushwaha Please refer doc/README.pblimage for more details 483 690e4258SPrabhakar Kushwaha 484 690e4258SPrabhakar Kushwaha CONFIG_SYS_FSL_PBL_RCW 485 690e4258SPrabhakar Kushwaha It adds PBI(pre-boot instructions) commands in u-boot build image. 486 690e4258SPrabhakar Kushwaha PBI commands can be used to configure SoC before it starts the execution. 487 690e4258SPrabhakar Kushwaha Please refer doc/README.pblimage for more details 488 690e4258SPrabhakar Kushwaha 489 4e5b1bd0SYork Sun CONFIG_SYS_FSL_DDR_BE 490 4e5b1bd0SYork Sun Defines the DDR controller register space as Big Endian 491 4e5b1bd0SYork Sun 492 4e5b1bd0SYork Sun CONFIG_SYS_FSL_DDR_LE 493 4e5b1bd0SYork Sun Defines the DDR controller register space as Little Endian 494 4e5b1bd0SYork Sun 495 6b9e309aSYork Sun CONFIG_SYS_FSL_DDR_SDRAM_BASE_PHY 496 6b9e309aSYork Sun Physical address from the view of DDR controllers. It is the 497 6b9e309aSYork Sun same as CONFIG_SYS_DDR_SDRAM_BASE for all Power SoCs. But 498 6b9e309aSYork Sun it could be different for ARM SoCs. 499 6b9e309aSYork Sun 500 6b1e1254SYork Sun CONFIG_SYS_FSL_DDR_INTLV_256B 501 6b1e1254SYork Sun DDR controller interleaving on 256-byte. This is a special 502 6b1e1254SYork Sun interleaving mode, handled by Dickens for Freescale layerscape 503 6b1e1254SYork Sun SoCs with ARM core. 504 6b1e1254SYork Sun 505 0b953ffcSMarkus Klotzbuecher- Intel Monahans options: 506 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MONAHANS_RUN_MODE_OSC_RATIO 507 0b953ffcSMarkus Klotzbuecher 508 0b953ffcSMarkus Klotzbuecher Defines the Monahans run mode to oscillator 509 0b953ffcSMarkus Klotzbuecher ratio. Valid values are 8, 16, 24, 31. The core 510 0b953ffcSMarkus Klotzbuecher frequency is this value multiplied by 13 MHz. 511 0b953ffcSMarkus Klotzbuecher 512 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MONAHANS_TURBO_RUN_MODE_RATIO 513 0b953ffcSMarkus Klotzbuecher 514 0b953ffcSMarkus Klotzbuecher Defines the Monahans turbo mode to oscillator 515 0b953ffcSMarkus Klotzbuecher ratio. Valid values are 1 (default if undefined) and 516 0b953ffcSMarkus Klotzbuecher 2. The core frequency as calculated above is multiplied 517 0b953ffcSMarkus Klotzbuecher by this value. 518 0b953ffcSMarkus Klotzbuecher 519 92bbd64eSDaniel Schwierzeck- MIPS CPU options: 520 92bbd64eSDaniel Schwierzeck CONFIG_SYS_INIT_SP_OFFSET 521 92bbd64eSDaniel Schwierzeck 522 92bbd64eSDaniel Schwierzeck Offset relative to CONFIG_SYS_SDRAM_BASE for initial stack 523 92bbd64eSDaniel Schwierzeck pointer. This is needed for the temporary stack before 524 92bbd64eSDaniel Schwierzeck relocation. 525 92bbd64eSDaniel Schwierzeck 526 92bbd64eSDaniel Schwierzeck CONFIG_SYS_MIPS_CACHE_MODE 527 92bbd64eSDaniel Schwierzeck 528 92bbd64eSDaniel Schwierzeck Cache operation mode for the MIPS CPU. 529 92bbd64eSDaniel Schwierzeck See also arch/mips/include/asm/mipsregs.h. 530 92bbd64eSDaniel Schwierzeck Possible values are: 531 92bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_NO_WA 532 92bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_WA 533 92bbd64eSDaniel Schwierzeck CONF_CM_UNCACHED 534 92bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_NONCOHERENT 535 92bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_CE 536 92bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_COW 537 92bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_CUW 538 92bbd64eSDaniel Schwierzeck CONF_CM_CACHABLE_ACCELERATED 539 92bbd64eSDaniel Schwierzeck 540 92bbd64eSDaniel Schwierzeck CONFIG_SYS_XWAY_EBU_BOOTCFG 541 92bbd64eSDaniel Schwierzeck 542 92bbd64eSDaniel Schwierzeck Special option for Lantiq XWAY SoCs for booting from NOR flash. 543 92bbd64eSDaniel Schwierzeck See also arch/mips/cpu/mips32/start.S. 544 92bbd64eSDaniel Schwierzeck 545 92bbd64eSDaniel Schwierzeck CONFIG_XWAY_SWAP_BYTES 546 92bbd64eSDaniel Schwierzeck 547 92bbd64eSDaniel Schwierzeck Enable compilation of tools/xway-swap-bytes needed for Lantiq 548 92bbd64eSDaniel Schwierzeck XWAY SoCs for booting from NOR flash. The U-Boot image needs to 549 92bbd64eSDaniel Schwierzeck be swapped if a flash programmer is used. 550 92bbd64eSDaniel Schwierzeck 551 b67d8816SChristian Riesch- ARM options: 552 b67d8816SChristian Riesch CONFIG_SYS_EXCEPTION_VECTORS_HIGH 553 b67d8816SChristian Riesch 554 b67d8816SChristian Riesch Select high exception vectors of the ARM core, e.g., do not 555 b67d8816SChristian Riesch clear the V bit of the c1 register of CP15. 556 b67d8816SChristian Riesch 557 5356f545SAneesh V CONFIG_SYS_THUMB_BUILD 558 5356f545SAneesh V 559 5356f545SAneesh V Use this flag to build U-Boot using the Thumb instruction 560 5356f545SAneesh V set for ARM architectures. Thumb instruction set provides 561 5356f545SAneesh V better code density. For ARM architectures that support 562 5356f545SAneesh V Thumb2 this flag will result in Thumb2 code generated by 563 5356f545SAneesh V GCC. 564 5356f545SAneesh V 565 c5d4752cSStephen Warren CONFIG_ARM_ERRATA_716044 566 0678587fSStephen Warren CONFIG_ARM_ERRATA_742230 567 0678587fSStephen Warren CONFIG_ARM_ERRATA_743622 568 0678587fSStephen Warren CONFIG_ARM_ERRATA_751472 569 f71cbfe3SNitin Garg CONFIG_ARM_ERRATA_794072 570 b7588e3bSNitin Garg CONFIG_ARM_ERRATA_761320 571 0678587fSStephen Warren 572 0678587fSStephen Warren If set, the workarounds for these ARM errata are applied early 573 0678587fSStephen Warren during U-Boot startup. Note that these options force the 574 0678587fSStephen Warren workarounds to be applied; no CPU-type/version detection 575 0678587fSStephen Warren exists, unlike the similar options in the Linux kernel. Do not 576 0678587fSStephen Warren set these options unless they apply! 577 0678587fSStephen Warren 578 795659dcSStephen Warren- CPU timer options: 579 795659dcSStephen Warren CONFIG_SYS_HZ 580 795659dcSStephen Warren 581 795659dcSStephen Warren The frequency of the timer returned by get_timer(). 582 795659dcSStephen Warren get_timer() must operate in milliseconds and this CONFIG 583 795659dcSStephen Warren option must be set to 1000. 584 795659dcSStephen Warren 585 5da627a4Swdenk- Linux Kernel Interface: 586 c609719bSwdenk CONFIG_CLOCKS_IN_MHZ 587 c609719bSwdenk 588 c609719bSwdenk U-Boot stores all clock information in Hz 589 c609719bSwdenk internally. For binary compatibility with older Linux 590 c609719bSwdenk kernels (which expect the clocks passed in the 591 c609719bSwdenk bd_info data to be in MHz) the environment variable 592 c609719bSwdenk "clocks_in_mhz" can be defined so that U-Boot 593 c609719bSwdenk converts clock data to MHZ before passing it to the 594 c609719bSwdenk Linux kernel. 595 c609719bSwdenk When CONFIG_CLOCKS_IN_MHZ is defined, a definition of 596 c609719bSwdenk "clocks_in_mhz=1" is automatically included in the 597 c609719bSwdenk default environment. 598 c609719bSwdenk 599 5da627a4Swdenk CONFIG_MEMSIZE_IN_BYTES [relevant for MIPS only] 600 5da627a4Swdenk 601 11ccc33fSMarcel Ziswiler When transferring memsize parameter to linux, some versions 602 5da627a4Swdenk expect it to be in bytes, others in MB. 603 5da627a4Swdenk Define CONFIG_MEMSIZE_IN_BYTES to make it in bytes. 604 5da627a4Swdenk 605 fec6d9eeSGerald Van Baren CONFIG_OF_LIBFDT 606 f57f70aaSWolfgang Denk 607 f57f70aaSWolfgang Denk New kernel versions are expecting firmware settings to be 608 213bf8c8SGerald Van Baren passed using flattened device trees (based on open firmware 609 213bf8c8SGerald Van Baren concepts). 610 213bf8c8SGerald Van Baren 611 213bf8c8SGerald Van Baren CONFIG_OF_LIBFDT 612 213bf8c8SGerald Van Baren * New libfdt-based support 613 213bf8c8SGerald Van Baren * Adds the "fdt" command 614 3bb342fcSKim Phillips * The bootm command automatically updates the fdt 615 213bf8c8SGerald Van Baren 616 b55ae402SMarcel Ziswiler OF_CPU - The proper name of the cpus node (only required for 617 b55ae402SMarcel Ziswiler MPC512X and MPC5xxx based boards). 618 b55ae402SMarcel Ziswiler OF_SOC - The proper name of the soc node (only required for 619 b55ae402SMarcel Ziswiler MPC512X and MPC5xxx based boards). 620 f57f70aaSWolfgang Denk OF_TBCLK - The timebase frequency. 621 c2871f03SKumar Gala OF_STDOUT_PATH - The path to the console device 622 f57f70aaSWolfgang Denk 623 11ccc33fSMarcel Ziswiler boards with QUICC Engines require OF_QE to set UCC MAC 624 11ccc33fSMarcel Ziswiler addresses 625 3bb342fcSKim Phillips 626 4e253137SKumar Gala CONFIG_OF_BOARD_SETUP 627 4e253137SKumar Gala 628 4e253137SKumar Gala Board code has addition modification that it wants to make 629 4e253137SKumar Gala to the flat device tree before handing it off to the kernel 630 6705d81eSwdenk 631 0267768eSMatthew McClintock CONFIG_OF_BOOT_CPU 632 0267768eSMatthew McClintock 633 11ccc33fSMarcel Ziswiler This define fills in the correct boot CPU in the boot 634 0267768eSMatthew McClintock param header, the default value is zero if undefined. 635 0267768eSMatthew McClintock 636 3887c3fbSHeiko Schocher CONFIG_OF_IDE_FIXUP 637 3887c3fbSHeiko Schocher 638 3887c3fbSHeiko Schocher U-Boot can detect if an IDE device is present or not. 639 3887c3fbSHeiko Schocher If not, and this new config option is activated, U-Boot 640 3887c3fbSHeiko Schocher removes the ATA node from the DTS before booting Linux, 641 3887c3fbSHeiko Schocher so the Linux IDE driver does not probe the device and 642 3887c3fbSHeiko Schocher crash. This is needed for buggy hardware (uc101) where 643 3887c3fbSHeiko Schocher no pull down resistor is connected to the signal IDE5V_DD7. 644 3887c3fbSHeiko Schocher 645 7eb29398SIgor Grinberg CONFIG_MACH_TYPE [relevant for ARM only][mandatory] 646 7eb29398SIgor Grinberg 647 7eb29398SIgor Grinberg This setting is mandatory for all boards that have only one 648 7eb29398SIgor Grinberg machine type and must be used to specify the machine type 649 7eb29398SIgor Grinberg number as it appears in the ARM machine registry 650 7eb29398SIgor Grinberg (see http://www.arm.linux.org.uk/developer/machines/). 651 7eb29398SIgor Grinberg Only boards that have multiple machine types supported 652 7eb29398SIgor Grinberg in a single configuration file and the machine type is 653 7eb29398SIgor Grinberg runtime discoverable, do not have to use this setting. 654 7eb29398SIgor Grinberg 655 0b2f4ecaSNiklaus Giger- vxWorks boot parameters: 656 0b2f4ecaSNiklaus Giger 657 0b2f4ecaSNiklaus Giger bootvx constructs a valid bootline using the following 658 0b2f4ecaSNiklaus Giger environments variables: bootfile, ipaddr, serverip, hostname. 659 0b2f4ecaSNiklaus Giger It loads the vxWorks image pointed bootfile. 660 0b2f4ecaSNiklaus Giger 661 0b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_BOOT_DEVICE - The vxworks device name 662 0b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_MAC_PTR - Ethernet 6 byte MA -address 663 0b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_SERVERNAME - Name of the server 664 0b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_BOOT_ADDR - Address of boot parameters 665 0b2f4ecaSNiklaus Giger 666 0b2f4ecaSNiklaus Giger CONFIG_SYS_VXWORKS_ADD_PARAMS 667 0b2f4ecaSNiklaus Giger 668 0b2f4ecaSNiklaus Giger Add it at the end of the bootline. E.g "u=username pw=secret" 669 0b2f4ecaSNiklaus Giger 670 0b2f4ecaSNiklaus Giger Note: If a "bootargs" environment is defined, it will overwride 671 0b2f4ecaSNiklaus Giger the defaults discussed just above. 672 0b2f4ecaSNiklaus Giger 673 2c451f78SAneesh V- Cache Configuration: 674 2c451f78SAneesh V CONFIG_SYS_ICACHE_OFF - Do not enable instruction cache in U-Boot 675 2c451f78SAneesh V CONFIG_SYS_DCACHE_OFF - Do not enable data cache in U-Boot 676 2c451f78SAneesh V CONFIG_SYS_L2CACHE_OFF- Do not enable L2 cache in U-Boot 677 2c451f78SAneesh V 678 93bc2193SAneesh V- Cache Configuration for ARM: 679 93bc2193SAneesh V CONFIG_SYS_L2_PL310 - Enable support for ARM PL310 L2 cache 680 93bc2193SAneesh V controller 681 93bc2193SAneesh V CONFIG_SYS_PL310_BASE - Physical base address of PL310 682 93bc2193SAneesh V controller register space 683 93bc2193SAneesh V 684 6705d81eSwdenk- Serial Ports: 685 48d0192fSAndreas Engel CONFIG_PL010_SERIAL 686 6705d81eSwdenk 687 6705d81eSwdenk Define this if you want support for Amba PrimeCell PL010 UARTs. 688 6705d81eSwdenk 689 48d0192fSAndreas Engel CONFIG_PL011_SERIAL 690 6705d81eSwdenk 691 6705d81eSwdenk Define this if you want support for Amba PrimeCell PL011 UARTs. 692 6705d81eSwdenk 693 6705d81eSwdenk CONFIG_PL011_CLOCK 694 6705d81eSwdenk 695 6705d81eSwdenk If you have Amba PrimeCell PL011 UARTs, set this variable to 696 6705d81eSwdenk the clock speed of the UARTs. 697 6705d81eSwdenk 698 6705d81eSwdenk CONFIG_PL01x_PORTS 699 6705d81eSwdenk 700 6705d81eSwdenk If you have Amba PrimeCell PL010 or PL011 UARTs on your board, 701 6705d81eSwdenk define this to a list of base addresses for each (supported) 702 6705d81eSwdenk port. See e.g. include/configs/versatile.h 703 6705d81eSwdenk 704 910f1ae3SJohn Rigby CONFIG_PL011_SERIAL_RLCR 705 910f1ae3SJohn Rigby 706 910f1ae3SJohn Rigby Some vendor versions of PL011 serial ports (e.g. ST-Ericsson U8500) 707 910f1ae3SJohn Rigby have separate receive and transmit line control registers. Set 708 910f1ae3SJohn Rigby this variable to initialize the extra register. 709 910f1ae3SJohn Rigby 710 910f1ae3SJohn Rigby CONFIG_PL011_SERIAL_FLUSH_ON_INIT 711 910f1ae3SJohn Rigby 712 910f1ae3SJohn Rigby On some platforms (e.g. U8500) U-Boot is loaded by a second stage 713 910f1ae3SJohn Rigby boot loader that has already initialized the UART. Define this 714 910f1ae3SJohn Rigby variable to flush the UART at init time. 715 910f1ae3SJohn Rigby 716 6705d81eSwdenk 717 c609719bSwdenk- Console Interface: 718 c609719bSwdenk Depending on board, define exactly one serial port 719 c609719bSwdenk (like CONFIG_8xx_CONS_SMC1, CONFIG_8xx_CONS_SMC2, 720 c609719bSwdenk CONFIG_8xx_CONS_SCC1, ...), or switch off the serial 721 c609719bSwdenk console by defining CONFIG_8xx_CONS_NONE 722 c609719bSwdenk 723 c609719bSwdenk Note: if CONFIG_8xx_CONS_NONE is defined, the serial 724 c609719bSwdenk port routines must be defined elsewhere 725 c609719bSwdenk (i.e. serial_init(), serial_getc(), ...) 726 c609719bSwdenk 727 c609719bSwdenk CONFIG_CFB_CONSOLE 728 c609719bSwdenk Enables console device for a color framebuffer. Needs following 729 c53043b7SWolfgang Denk defines (cf. smiLynxEM, i8042) 730 c609719bSwdenk VIDEO_FB_LITTLE_ENDIAN graphic memory organisation 731 c609719bSwdenk (default big endian) 732 c609719bSwdenk VIDEO_HW_RECTFILL graphic chip supports 733 c609719bSwdenk rectangle fill 734 c609719bSwdenk (cf. smiLynxEM) 735 c609719bSwdenk VIDEO_HW_BITBLT graphic chip supports 736 c609719bSwdenk bit-blit (cf. smiLynxEM) 737 c609719bSwdenk VIDEO_VISIBLE_COLS visible pixel columns 738 c609719bSwdenk (cols=pitch) 739 c609719bSwdenk VIDEO_VISIBLE_ROWS visible pixel rows 740 c609719bSwdenk VIDEO_PIXEL_SIZE bytes per pixel 741 c609719bSwdenk VIDEO_DATA_FORMAT graphic data format 742 c609719bSwdenk (0-5, cf. cfb_console.c) 743 c609719bSwdenk VIDEO_FB_ADRS framebuffer address 744 c609719bSwdenk VIDEO_KBD_INIT_FCT keyboard int fct 745 c609719bSwdenk (i.e. i8042_kbd_init()) 746 c609719bSwdenk VIDEO_TSTC_FCT test char fct 747 c609719bSwdenk (i.e. i8042_tstc) 748 c609719bSwdenk VIDEO_GETC_FCT get char fct 749 c609719bSwdenk (i.e. i8042_getc) 750 c609719bSwdenk CONFIG_CONSOLE_CURSOR cursor drawing on/off 751 c609719bSwdenk (requires blink timer 752 c609719bSwdenk cf. i8042.c) 753 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CONSOLE_BLINK_COUNT blink interval (cf. i8042.c) 754 c609719bSwdenk CONFIG_CONSOLE_TIME display time/date info in 755 c609719bSwdenk upper right corner 756 602ad3b3SJon Loeliger (requires CONFIG_CMD_DATE) 757 c609719bSwdenk CONFIG_VIDEO_LOGO display Linux logo in 758 c609719bSwdenk upper left corner 759 a6c7ad2fSwdenk CONFIG_VIDEO_BMP_LOGO use bmp_logo.h instead of 760 a6c7ad2fSwdenk linux_logo.h for logo. 761 a6c7ad2fSwdenk Requires CONFIG_VIDEO_LOGO 762 c609719bSwdenk CONFIG_CONSOLE_EXTRA_INFO 763 11ccc33fSMarcel Ziswiler additional board info beside 764 c609719bSwdenk the logo 765 c609719bSwdenk 766 33a35bbbSPali Rohár When CONFIG_CFB_CONSOLE_ANSI is defined, console will support 767 33a35bbbSPali Rohár a limited number of ANSI escape sequences (cursor control, 768 33a35bbbSPali Rohár erase functions and limited graphics rendition control). 769 33a35bbbSPali Rohár 770 c609719bSwdenk When CONFIG_CFB_CONSOLE is defined, video console is 771 c609719bSwdenk default i/o. Serial console can be forced with 772 c609719bSwdenk environment 'console=serial'. 773 c609719bSwdenk 774 a3ad8e26Swdenk When CONFIG_SILENT_CONSOLE is defined, all console 775 a3ad8e26Swdenk messages (by U-Boot and Linux!) can be silenced with 776 a3ad8e26Swdenk the "silent" environment variable. See 777 a3ad8e26Swdenk doc/README.silent for more information. 778 a3ad8e26Swdenk 779 45ae2546SHeiko Schocher CONFIG_SYS_CONSOLE_BG_COL: define the backgroundcolor, default 780 45ae2546SHeiko Schocher is 0x00. 781 45ae2546SHeiko Schocher CONFIG_SYS_CONSOLE_FG_COL: define the foregroundcolor, default 782 45ae2546SHeiko Schocher is 0xa0. 783 45ae2546SHeiko Schocher 784 c609719bSwdenk- Console Baudrate: 785 c609719bSwdenk CONFIG_BAUDRATE - in bps 786 c609719bSwdenk Select one of the baudrates listed in 787 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BAUDRATE_TABLE, see below. 788 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BRGCLK_PRESCALE, baudrate prescale 789 c609719bSwdenk 790 c92fac91SHeiko Schocher- Console Rx buffer length 791 c92fac91SHeiko Schocher With CONFIG_SYS_SMC_RXBUFLEN it is possible to define 792 c92fac91SHeiko Schocher the maximum receive buffer length for the SMC. 793 2b3f12c2SHeiko Schocher This option is actual only for 82xx and 8xx possible. 794 c92fac91SHeiko Schocher If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE 795 c92fac91SHeiko Schocher must be defined, to setup the maximum idle timeout for 796 c92fac91SHeiko Schocher the SMC. 797 c92fac91SHeiko Schocher 798 9558b48aSGraeme Russ- Pre-Console Buffer: 799 9558b48aSGraeme Russ Prior to the console being initialised (i.e. serial UART 800 9558b48aSGraeme Russ initialised etc) all console output is silently discarded. 801 9558b48aSGraeme Russ Defining CONFIG_PRE_CONSOLE_BUFFER will cause U-Boot to 802 9558b48aSGraeme Russ buffer any console messages prior to the console being 803 9558b48aSGraeme Russ initialised to a buffer of size CONFIG_PRE_CON_BUF_SZ 804 9558b48aSGraeme Russ bytes located at CONFIG_PRE_CON_BUF_ADDR. The buffer is 805 9558b48aSGraeme Russ a circular buffer, so if more than CONFIG_PRE_CON_BUF_SZ 806 9558b48aSGraeme Russ bytes are output before the console is initialised, the 807 9558b48aSGraeme Russ earlier bytes are discarded. 808 9558b48aSGraeme Russ 809 9558b48aSGraeme Russ 'Sane' compilers will generate smaller code if 810 9558b48aSGraeme Russ CONFIG_PRE_CON_BUF_SZ is a power of 2 811 9558b48aSGraeme Russ 812 046a37bdSSonny Rao- Safe printf() functions 813 046a37bdSSonny Rao Define CONFIG_SYS_VSNPRINTF to compile in safe versions of 814 046a37bdSSonny Rao the printf() functions. These are defined in 815 046a37bdSSonny Rao include/vsprintf.h and include snprintf(), vsnprintf() and 816 046a37bdSSonny Rao so on. Code size increase is approximately 300-500 bytes. 817 046a37bdSSonny Rao If this option is not given then these functions will 818 046a37bdSSonny Rao silently discard their buffer size argument - this means 819 046a37bdSSonny Rao you are not getting any overflow checking in this case. 820 046a37bdSSonny Rao 821 c609719bSwdenk- Boot Delay: CONFIG_BOOTDELAY - in seconds 822 c609719bSwdenk Delay before automatically booting the default image; 823 c609719bSwdenk set to -1 to disable autoboot. 824 93d7212fSJoe Hershberger set to -2 to autoboot with no delay and not check for abort 825 93d7212fSJoe Hershberger (even when CONFIG_ZERO_BOOTDELAY_CHECK is defined). 826 c609719bSwdenk 827 c609719bSwdenk See doc/README.autoboot for these options that 828 c609719bSwdenk work with CONFIG_BOOTDELAY. None are required. 829 c609719bSwdenk CONFIG_BOOT_RETRY_TIME 830 c609719bSwdenk CONFIG_BOOT_RETRY_MIN 831 c609719bSwdenk CONFIG_AUTOBOOT_KEYED 832 c609719bSwdenk CONFIG_AUTOBOOT_PROMPT 833 c609719bSwdenk CONFIG_AUTOBOOT_DELAY_STR 834 c609719bSwdenk CONFIG_AUTOBOOT_STOP_STR 835 c609719bSwdenk CONFIG_AUTOBOOT_DELAY_STR2 836 c609719bSwdenk CONFIG_AUTOBOOT_STOP_STR2 837 c609719bSwdenk CONFIG_ZERO_BOOTDELAY_CHECK 838 c609719bSwdenk CONFIG_RESET_TO_RETRY 839 c609719bSwdenk 840 c609719bSwdenk- Autoboot Command: 841 c609719bSwdenk CONFIG_BOOTCOMMAND 842 c609719bSwdenk Only needed when CONFIG_BOOTDELAY is enabled; 843 c609719bSwdenk define a command string that is automatically executed 844 c609719bSwdenk when no character is read on the console interface 845 c609719bSwdenk within "Boot Delay" after reset. 846 c609719bSwdenk 847 c609719bSwdenk CONFIG_BOOTARGS 848 c609719bSwdenk This can be used to pass arguments to the bootm 849 c609719bSwdenk command. The value of CONFIG_BOOTARGS goes into the 850 c609719bSwdenk environment value "bootargs". 851 c609719bSwdenk 852 c609719bSwdenk CONFIG_RAMBOOT and CONFIG_NFSBOOT 853 c609719bSwdenk The value of these goes into the environment as 854 c609719bSwdenk "ramboot" and "nfsboot" respectively, and can be used 855 c609719bSwdenk as a convenience, when switching between booting from 856 11ccc33fSMarcel Ziswiler RAM and NFS. 857 c609719bSwdenk 858 eda0ba38SHeiko Schocher- Bootcount: 859 eda0ba38SHeiko Schocher CONFIG_BOOTCOUNT_LIMIT 860 eda0ba38SHeiko Schocher Implements a mechanism for detecting a repeating reboot 861 eda0ba38SHeiko Schocher cycle, see: 862 eda0ba38SHeiko Schocher http://www.denx.de/wiki/view/DULG/UBootBootCountLimit 863 eda0ba38SHeiko Schocher 864 eda0ba38SHeiko Schocher CONFIG_BOOTCOUNT_ENV 865 eda0ba38SHeiko Schocher If no softreset save registers are found on the hardware 866 eda0ba38SHeiko Schocher "bootcount" is stored in the environment. To prevent a 867 eda0ba38SHeiko Schocher saveenv on all reboots, the environment variable 868 eda0ba38SHeiko Schocher "upgrade_available" is used. If "upgrade_available" is 869 eda0ba38SHeiko Schocher 0, "bootcount" is always 0, if "upgrade_available" is 870 eda0ba38SHeiko Schocher 1 "bootcount" is incremented in the environment. 871 eda0ba38SHeiko Schocher So the Userspace Applikation must set the "upgrade_available" 872 eda0ba38SHeiko Schocher and "bootcount" variable to 0, if a boot was successfully. 873 eda0ba38SHeiko Schocher 874 c609719bSwdenk- Pre-Boot Commands: 875 c609719bSwdenk CONFIG_PREBOOT 876 c609719bSwdenk 877 c609719bSwdenk When this option is #defined, the existence of the 878 c609719bSwdenk environment variable "preboot" will be checked 879 c609719bSwdenk immediately before starting the CONFIG_BOOTDELAY 880 c609719bSwdenk countdown and/or running the auto-boot command resp. 881 c609719bSwdenk entering interactive mode. 882 c609719bSwdenk 883 c609719bSwdenk This feature is especially useful when "preboot" is 884 c609719bSwdenk automatically generated or modified. For an example 885 c609719bSwdenk see the LWMON board specific code: here "preboot" is 886 c609719bSwdenk modified when the user holds down a certain 887 c609719bSwdenk combination of keys on the (special) keyboard when 888 c609719bSwdenk booting the systems 889 c609719bSwdenk 890 c609719bSwdenk- Serial Download Echo Mode: 891 c609719bSwdenk CONFIG_LOADS_ECHO 892 c609719bSwdenk If defined to 1, all characters received during a 893 c609719bSwdenk serial download (using the "loads" command) are 894 c609719bSwdenk echoed back. This might be needed by some terminal 895 c609719bSwdenk emulations (like "cu"), but may as well just take 896 c609719bSwdenk time on others. This setting #define's the initial 897 c609719bSwdenk value of the "loads_echo" environment variable. 898 c609719bSwdenk 899 602ad3b3SJon Loeliger- Kgdb Serial Baudrate: (if CONFIG_CMD_KGDB is defined) 900 c609719bSwdenk CONFIG_KGDB_BAUDRATE 901 c609719bSwdenk Select one of the baudrates listed in 902 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BAUDRATE_TABLE, see below. 903 c609719bSwdenk 904 c609719bSwdenk- Monitor Functions: 905 602ad3b3SJon Loeliger Monitor commands can be included or excluded 906 602ad3b3SJon Loeliger from the build by using the #include files 907 c6c621bdSStephen Warren <config_cmd_all.h> and #undef'ing unwanted 908 c6c621bdSStephen Warren commands, or using <config_cmd_default.h> 909 602ad3b3SJon Loeliger and augmenting with additional #define's 910 602ad3b3SJon Loeliger for wanted commands. 911 c609719bSwdenk 912 602ad3b3SJon Loeliger The default command configuration includes all commands 913 602ad3b3SJon Loeliger except those marked below with a "*". 914 602ad3b3SJon Loeliger 915 602ad3b3SJon Loeliger CONFIG_CMD_ASKENV * ask for env variable 916 602ad3b3SJon Loeliger CONFIG_CMD_BDI bdinfo 917 602ad3b3SJon Loeliger CONFIG_CMD_BEDBUG * Include BedBug Debugger 918 602ad3b3SJon Loeliger CONFIG_CMD_BMP * BMP support 919 602ad3b3SJon Loeliger CONFIG_CMD_BSP * Board specific commands 920 602ad3b3SJon Loeliger CONFIG_CMD_BOOTD bootd 921 602ad3b3SJon Loeliger CONFIG_CMD_CACHE * icache, dcache 922 08d0d6f3SMichal Simek CONFIG_CMD_CLK * clock command support 923 602ad3b3SJon Loeliger CONFIG_CMD_CONSOLE coninfo 924 710b9938SMike Frysinger CONFIG_CMD_CRC32 * crc32 925 602ad3b3SJon Loeliger CONFIG_CMD_DATE * support for RTC, date/time... 926 602ad3b3SJon Loeliger CONFIG_CMD_DHCP * DHCP support 927 602ad3b3SJon Loeliger CONFIG_CMD_DIAG * Diagnostics 928 a7c93104SPeter Tyser CONFIG_CMD_DS4510 * ds4510 I2C gpio commands 929 a7c93104SPeter Tyser CONFIG_CMD_DS4510_INFO * ds4510 I2C info command 930 a7c93104SPeter Tyser CONFIG_CMD_DS4510_MEM * ds4510 I2C eeprom/sram commansd 931 a7c93104SPeter Tyser CONFIG_CMD_DS4510_RST * ds4510 I2C rst command 932 602ad3b3SJon Loeliger CONFIG_CMD_DTT * Digital Therm and Thermostat 933 602ad3b3SJon Loeliger CONFIG_CMD_ECHO echo arguments 934 246c6922SPeter Tyser CONFIG_CMD_EDITENV edit env variable 935 602ad3b3SJon Loeliger CONFIG_CMD_EEPROM * EEPROM read/write support 936 602ad3b3SJon Loeliger CONFIG_CMD_ELF * bootelf, bootvx 937 5e2b3e0cSJoe Hershberger CONFIG_CMD_ENV_CALLBACK * display details about env callbacks 938 fffad71bSJoe Hershberger CONFIG_CMD_ENV_FLAGS * display details about env flags 939 88733e2cSAndrew Ruder CONFIG_CMD_ENV_EXISTS * check existence of env variable 940 0c79cda0SMike Frysinger CONFIG_CMD_EXPORTENV * export the environment 941 03e2ecf6SStephen Warren CONFIG_CMD_EXT2 * ext2 command support 942 03e2ecf6SStephen Warren CONFIG_CMD_EXT4 * ext4 command support 943 16f4d933SStephen Warren CONFIG_CMD_FS_GENERIC * filesystem commands (e.g. load, ls) 944 16f4d933SStephen Warren that work for multiple fs types 945 bdab39d3SMike Frysinger CONFIG_CMD_SAVEENV saveenv 946 602ad3b3SJon Loeliger CONFIG_CMD_FDC * Floppy Disk Support 947 03e2ecf6SStephen Warren CONFIG_CMD_FAT * FAT command support 948 602ad3b3SJon Loeliger CONFIG_CMD_FLASH flinfo, erase, protect 949 602ad3b3SJon Loeliger CONFIG_CMD_FPGA FPGA device initialization support 950 4d98b5c8SVincent Stehlé CONFIG_CMD_FUSE * Device fuse support 951 53fdc7efSAnton Staaf CONFIG_CMD_GETTIME * Get time since boot 952 a641b979SMike Frysinger CONFIG_CMD_GO * the 'go' command (exec code) 953 a000b795SKim Phillips CONFIG_CMD_GREPENV * search environment 954 bf36c5d5SSimon Glass CONFIG_CMD_HASH * calculate hash / digest 955 602ad3b3SJon Loeliger CONFIG_CMD_HWFLOW * RTS/CTS hw flow control 956 602ad3b3SJon Loeliger CONFIG_CMD_I2C * I2C serial bus support 957 602ad3b3SJon Loeliger CONFIG_CMD_IDE * IDE harddisk support 958 602ad3b3SJon Loeliger CONFIG_CMD_IMI iminfo 959 8fdf1e0fSVipin Kumar CONFIG_CMD_IMLS List all images found in NOR flash 960 4d98b5c8SVincent Stehlé CONFIG_CMD_IMLS_NAND * List all images found in NAND flash 961 602ad3b3SJon Loeliger CONFIG_CMD_IMMAP * IMMR dump support 962 0c79cda0SMike Frysinger CONFIG_CMD_IMPORTENV * import an environment 963 c167cc02SJoe Hershberger CONFIG_CMD_INI * import data from an ini file into the env 964 602ad3b3SJon Loeliger CONFIG_CMD_IRQ * irqinfo 965 602ad3b3SJon Loeliger CONFIG_CMD_ITEST Integer/string test of 2 values 966 602ad3b3SJon Loeliger CONFIG_CMD_JFFS2 * JFFS2 Support 967 602ad3b3SJon Loeliger CONFIG_CMD_KGDB * kgdb 968 4d98b5c8SVincent Stehlé CONFIG_CMD_LDRINFO * ldrinfo (display Blackfin loader) 969 d22c338eSJoe Hershberger CONFIG_CMD_LINK_LOCAL * link-local IP address auto-configuration 970 d22c338eSJoe Hershberger (169.254.*.*) 971 602ad3b3SJon Loeliger CONFIG_CMD_LOADB loadb 972 602ad3b3SJon Loeliger CONFIG_CMD_LOADS loads 973 4d98b5c8SVincent Stehlé CONFIG_CMD_MD5SUM * print md5 message digest 974 02c9aa1dSRobin Getz (requires CONFIG_CMD_MEMORY and CONFIG_MD5) 975 15a33e49SSimon Glass CONFIG_CMD_MEMINFO * Display detailed memory information 976 602ad3b3SJon Loeliger CONFIG_CMD_MEMORY md, mm, nm, mw, cp, cmp, crc, base, 977 a2681707SWolfgang Denk loop, loopw 978 4d98b5c8SVincent Stehlé CONFIG_CMD_MEMTEST * mtest 979 602ad3b3SJon Loeliger CONFIG_CMD_MISC Misc functions like sleep etc 980 602ad3b3SJon Loeliger CONFIG_CMD_MMC * MMC memory mapped support 981 602ad3b3SJon Loeliger CONFIG_CMD_MII * MII utility commands 982 68d7d651SStefan Roese CONFIG_CMD_MTDPARTS * MTD partition support 983 602ad3b3SJon Loeliger CONFIG_CMD_NAND * NAND support 984 602ad3b3SJon Loeliger CONFIG_CMD_NET bootp, tftpboot, rarpboot 985 4d98b5c8SVincent Stehlé CONFIG_CMD_NFS NFS support 986 e92739d3SPeter Tyser CONFIG_CMD_PCA953X * PCA953x I2C gpio commands 987 e92739d3SPeter Tyser CONFIG_CMD_PCA953X_INFO * PCA953x I2C gpio info command 988 602ad3b3SJon Loeliger CONFIG_CMD_PCI * pciinfo 989 602ad3b3SJon Loeliger CONFIG_CMD_PCMCIA * PCMCIA support 990 602ad3b3SJon Loeliger CONFIG_CMD_PING * send ICMP ECHO_REQUEST to network 991 602ad3b3SJon Loeliger host 992 602ad3b3SJon Loeliger CONFIG_CMD_PORTIO * Port I/O 993 ff048ea9SKenneth Waters CONFIG_CMD_READ * Read raw data from partition 994 602ad3b3SJon Loeliger CONFIG_CMD_REGINFO * Register dump 995 602ad3b3SJon Loeliger CONFIG_CMD_RUN run command in env variable 996 d304931fSSimon Glass CONFIG_CMD_SANDBOX * sb command to access sandbox features 997 602ad3b3SJon Loeliger CONFIG_CMD_SAVES * save S record dump 998 602ad3b3SJon Loeliger CONFIG_CMD_SCSI * SCSI Support 999 602ad3b3SJon Loeliger CONFIG_CMD_SDRAM * print SDRAM configuration information 1000 602ad3b3SJon Loeliger (requires CONFIG_CMD_I2C) 1001 602ad3b3SJon Loeliger CONFIG_CMD_SETGETDCR Support for DCR Register access 1002 602ad3b3SJon Loeliger (4xx only) 1003 f61ec45eSEric Nelson CONFIG_CMD_SF * Read/write/erase SPI NOR flash 1004 4d98b5c8SVincent Stehlé CONFIG_CMD_SHA1SUM * print sha1 memory digest 1005 02c9aa1dSRobin Getz (requires CONFIG_CMD_MEMORY) 1006 7d861d95SBob Liu CONFIG_CMD_SOFTSWITCH * Soft switch setting command for BF60x 1007 74de7aefSWolfgang Denk CONFIG_CMD_SOURCE "source" command Support 1008 602ad3b3SJon Loeliger CONFIG_CMD_SPI * SPI serial bus support 1009 7a83af07SLuca Ceresoli CONFIG_CMD_TFTPSRV * TFTP transfer in server mode 1010 1fb7cd49SSimon Glass CONFIG_CMD_TFTPPUT * TFTP put command (upload) 1011 da83bcd7SJoe Hershberger CONFIG_CMD_TIME * run command and report execution time (ARM specific) 1012 da83bcd7SJoe Hershberger CONFIG_CMD_TIMER * access to the system tick timer 1013 602ad3b3SJon Loeliger CONFIG_CMD_USB * USB support 1014 602ad3b3SJon Loeliger CONFIG_CMD_CDP * Cisco Discover Protocol support 1015 c8339f51SMarek Vasut CONFIG_CMD_MFSL * Microblaze FSL support 1016 4d98b5c8SVincent Stehlé CONFIG_CMD_XIMG Load part of Multi Image 1017 89c8230dSPrzemyslaw Marczak CONFIG_CMD_UUID * Generate random UUID or GUID string 1018 c609719bSwdenk 1019 c609719bSwdenk EXAMPLE: If you want all functions except of network 1020 c609719bSwdenk support you can write: 1021 c609719bSwdenk 1022 602ad3b3SJon Loeliger #include "config_cmd_all.h" 1023 602ad3b3SJon Loeliger #undef CONFIG_CMD_NET 1024 c609719bSwdenk 1025 213bf8c8SGerald Van Baren Other Commands: 1026 213bf8c8SGerald Van Baren fdt (flattened device tree) command: CONFIG_OF_LIBFDT 1027 c609719bSwdenk 1028 c609719bSwdenk Note: Don't enable the "icache" and "dcache" commands 1029 602ad3b3SJon Loeliger (configuration option CONFIG_CMD_CACHE) unless you know 1030 c609719bSwdenk what you (and your U-Boot users) are doing. Data 1031 c609719bSwdenk cache cannot be enabled on systems like the 8xx or 1032 c609719bSwdenk 8260 (where accesses to the IMMR region must be 1033 c609719bSwdenk uncached), and it cannot be disabled on all other 1034 c609719bSwdenk systems where we (mis-) use the data cache to hold an 1035 c609719bSwdenk initial stack and some data. 1036 c609719bSwdenk 1037 c609719bSwdenk 1038 c609719bSwdenk XXX - this list needs to get updated! 1039 c609719bSwdenk 1040 a5ecbe62SWolfgang Denk- Regular expression support: 1041 a5ecbe62SWolfgang Denk CONFIG_REGEX 1042 a5ecbe62SWolfgang Denk If this variable is defined, U-Boot is linked against 1043 a5ecbe62SWolfgang Denk the SLRE (Super Light Regular Expression) library, 1044 a5ecbe62SWolfgang Denk which adds regex support to some commands, as for 1045 a5ecbe62SWolfgang Denk example "env grep" and "setexpr". 1046 a5ecbe62SWolfgang Denk 1047 45ba8077SSimon Glass- Device tree: 1048 45ba8077SSimon Glass CONFIG_OF_CONTROL 1049 45ba8077SSimon Glass If this variable is defined, U-Boot will use a device tree 1050 45ba8077SSimon Glass to configure its devices, instead of relying on statically 1051 45ba8077SSimon Glass compiled #defines in the board file. This option is 1052 45ba8077SSimon Glass experimental and only available on a few boards. The device 1053 45ba8077SSimon Glass tree is available in the global data as gd->fdt_blob. 1054 45ba8077SSimon Glass 1055 2c0f79e4SSimon Glass U-Boot needs to get its device tree from somewhere. This can 1056 2c0f79e4SSimon Glass be done using one of the two options below: 1057 bbb0b128SSimon Glass 1058 bbb0b128SSimon Glass CONFIG_OF_EMBED 1059 bbb0b128SSimon Glass If this variable is defined, U-Boot will embed a device tree 1060 bbb0b128SSimon Glass binary in its image. This device tree file should be in the 1061 bbb0b128SSimon Glass board directory and called <soc>-<board>.dts. The binary file 1062 bbb0b128SSimon Glass is then picked up in board_init_f() and made available through 1063 bbb0b128SSimon Glass the global data structure as gd->blob. 1064 45ba8077SSimon Glass 1065 2c0f79e4SSimon Glass CONFIG_OF_SEPARATE 1066 2c0f79e4SSimon Glass If this variable is defined, U-Boot will build a device tree 1067 2c0f79e4SSimon Glass binary. It will be called u-boot.dtb. Architecture-specific 1068 2c0f79e4SSimon Glass code will locate it at run-time. Generally this works by: 1069 2c0f79e4SSimon Glass 1070 2c0f79e4SSimon Glass cat u-boot.bin u-boot.dtb >image.bin 1071 2c0f79e4SSimon Glass 1072 2c0f79e4SSimon Glass and in fact, U-Boot does this for you, creating a file called 1073 2c0f79e4SSimon Glass u-boot-dtb.bin which is useful in the common case. You can 1074 2c0f79e4SSimon Glass still use the individual files if you need something more 1075 2c0f79e4SSimon Glass exotic. 1076 2c0f79e4SSimon Glass 1077 c609719bSwdenk- Watchdog: 1078 c609719bSwdenk CONFIG_WATCHDOG 1079 c609719bSwdenk If this variable is defined, it enables watchdog 1080 6abe6fb6SDetlev Zundel support for the SoC. There must be support in the SoC 1081 6abe6fb6SDetlev Zundel specific code for a watchdog. For the 8xx and 8260 1082 6abe6fb6SDetlev Zundel CPUs, the SIU Watchdog feature is enabled in the SYPCR 1083 6abe6fb6SDetlev Zundel register. When supported for a specific SoC is 1084 6abe6fb6SDetlev Zundel available, then no further board specific code should 1085 6abe6fb6SDetlev Zundel be needed to use it. 1086 6abe6fb6SDetlev Zundel 1087 6abe6fb6SDetlev Zundel CONFIG_HW_WATCHDOG 1088 6abe6fb6SDetlev Zundel When using a watchdog circuitry external to the used 1089 6abe6fb6SDetlev Zundel SoC, then define this variable and provide board 1090 6abe6fb6SDetlev Zundel specific code for the "hw_watchdog_reset" function. 1091 c609719bSwdenk 1092 c1551ea8Sstroese- U-Boot Version: 1093 c1551ea8Sstroese CONFIG_VERSION_VARIABLE 1094 c1551ea8Sstroese If this variable is defined, an environment variable 1095 c1551ea8Sstroese named "ver" is created by U-Boot showing the U-Boot 1096 c1551ea8Sstroese version as printed by the "version" command. 1097 a1ea8e51SBenoît Thébaudeau Any change to this variable will be reverted at the 1098 a1ea8e51SBenoît Thébaudeau next reset. 1099 c1551ea8Sstroese 1100 c609719bSwdenk- Real-Time Clock: 1101 c609719bSwdenk 1102 602ad3b3SJon Loeliger When CONFIG_CMD_DATE is selected, the type of the RTC 1103 c609719bSwdenk has to be selected, too. Define exactly one of the 1104 c609719bSwdenk following options: 1105 c609719bSwdenk 1106 c609719bSwdenk CONFIG_RTC_MPC8xx - use internal RTC of MPC8xx 1107 c609719bSwdenk CONFIG_RTC_PCF8563 - use Philips PCF8563 RTC 1108 4e8b7544SFabio Estevam CONFIG_RTC_MC13XXX - use MC13783 or MC13892 RTC 1109 c609719bSwdenk CONFIG_RTC_MC146818 - use MC146818 RTC 1110 1cb8e980Swdenk CONFIG_RTC_DS1307 - use Maxim, Inc. DS1307 RTC 1111 c609719bSwdenk CONFIG_RTC_DS1337 - use Maxim, Inc. DS1337 RTC 1112 7f70e853Swdenk CONFIG_RTC_DS1338 - use Maxim, Inc. DS1338 RTC 1113 3bac3513Swdenk CONFIG_RTC_DS164x - use Dallas DS164x RTC 1114 9536dfccSTor Krill CONFIG_RTC_ISL1208 - use Intersil ISL1208 RTC 1115 4c0d4c3bSwdenk CONFIG_RTC_MAX6900 - use Maxim, Inc. MAX6900 RTC 1116 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_RTC_DS1337_NOOSC - Turn off the OSC output for DS1337 1117 71d19f30SHeiko Schocher CONFIG_SYS_RV3029_TCR - enable trickle charger on 1118 71d19f30SHeiko Schocher RV3029 RTC. 1119 c609719bSwdenk 1120 b37c7e5eSwdenk Note that if the RTC uses I2C, then the I2C interface 1121 b37c7e5eSwdenk must also be configured. See I2C Support, below. 1122 b37c7e5eSwdenk 1123 e92739d3SPeter Tyser- GPIO Support: 1124 e92739d3SPeter Tyser CONFIG_PCA953X - use NXP's PCA953X series I2C GPIO 1125 e92739d3SPeter Tyser 1126 5dec49caSChris Packham The CONFIG_SYS_I2C_PCA953X_WIDTH option specifies a list of 1127 5dec49caSChris Packham chip-ngpio pairs that tell the PCA953X driver the number of 1128 5dec49caSChris Packham pins supported by a particular chip. 1129 5dec49caSChris Packham 1130 e92739d3SPeter Tyser Note that if the GPIO device uses I2C, then the I2C interface 1131 e92739d3SPeter Tyser must also be configured. See I2C Support, below. 1132 e92739d3SPeter Tyser 1133 c609719bSwdenk- Timestamp Support: 1134 c609719bSwdenk 1135 c609719bSwdenk When CONFIG_TIMESTAMP is selected, the timestamp 1136 c609719bSwdenk (date and time) of an image is printed by image 1137 c609719bSwdenk commands like bootm or iminfo. This option is 1138 602ad3b3SJon Loeliger automatically enabled when you select CONFIG_CMD_DATE . 1139 c609719bSwdenk 1140 923c46f9SKarl O. Pinc- Partition Labels (disklabels) Supported: 1141 923c46f9SKarl O. Pinc Zero or more of the following: 1142 923c46f9SKarl O. Pinc CONFIG_MAC_PARTITION Apple's MacOS partition table. 1143 923c46f9SKarl O. Pinc CONFIG_DOS_PARTITION MS Dos partition table, traditional on the 1144 923c46f9SKarl O. Pinc Intel architecture, USB sticks, etc. 1145 923c46f9SKarl O. Pinc CONFIG_ISO_PARTITION ISO partition table, used on CDROM etc. 1146 923c46f9SKarl O. Pinc CONFIG_EFI_PARTITION GPT partition table, common when EFI is the 1147 923c46f9SKarl O. Pinc bootloader. Note 2TB partition limit; see 1148 923c46f9SKarl O. Pinc disk/part_efi.c 1149 923c46f9SKarl O. Pinc CONFIG_MTD_PARTITIONS Memory Technology Device partition table. 1150 c609719bSwdenk 1151 602ad3b3SJon Loeliger If IDE or SCSI support is enabled (CONFIG_CMD_IDE or 1152 218ca724SWolfgang Denk CONFIG_CMD_SCSI) you must configure support for at 1153 923c46f9SKarl O. Pinc least one non-MTD partition type as well. 1154 c609719bSwdenk 1155 c609719bSwdenk- IDE Reset method: 1156 4d13cbadSwdenk CONFIG_IDE_RESET_ROUTINE - this is defined in several 1157 4d13cbadSwdenk board configurations files but used nowhere! 1158 c609719bSwdenk 1159 4d13cbadSwdenk CONFIG_IDE_RESET - is this is defined, IDE Reset will 1160 4d13cbadSwdenk be performed by calling the function 1161 4d13cbadSwdenk ide_set_reset(int reset) 1162 4d13cbadSwdenk which has to be defined in a board specific file 1163 c609719bSwdenk 1164 c609719bSwdenk- ATAPI Support: 1165 c609719bSwdenk CONFIG_ATAPI 1166 c609719bSwdenk 1167 c609719bSwdenk Set this to enable ATAPI support. 1168 c609719bSwdenk 1169 c40b2956Swdenk- LBA48 Support 1170 c40b2956Swdenk CONFIG_LBA48 1171 c40b2956Swdenk 1172 c40b2956Swdenk Set this to enable support for disks larger than 137GB 1173 4b142febSHeiko Schocher Also look at CONFIG_SYS_64BIT_LBA. 1174 c40b2956Swdenk Whithout these , LBA48 support uses 32bit variables and will 'only' 1175 c40b2956Swdenk support disks up to 2.1TB. 1176 c40b2956Swdenk 1177 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_64BIT_LBA: 1178 c40b2956Swdenk When enabled, makes the IDE subsystem use 64bit sector addresses. 1179 c40b2956Swdenk Default is 32bit. 1180 c40b2956Swdenk 1181 c609719bSwdenk- SCSI Support: 1182 c609719bSwdenk At the moment only there is only support for the 1183 c609719bSwdenk SYM53C8XX SCSI controller; define 1184 c609719bSwdenk CONFIG_SCSI_SYM53C8XX to enable it. 1185 c609719bSwdenk 1186 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_LUN [8], CONFIG_SYS_SCSI_MAX_SCSI_ID [7] and 1187 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_DEVICE [CONFIG_SYS_SCSI_MAX_SCSI_ID * 1188 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_MAX_LUN] can be adjusted to define the 1189 c609719bSwdenk maximum numbers of LUNs, SCSI ID's and target 1190 c609719bSwdenk devices. 1191 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SCSI_SYM53C8XX_CCF to fix clock timing (80Mhz) 1192 c609719bSwdenk 1193 447c031bSStefan Reinauer The environment variable 'scsidevs' is set to the number of 1194 447c031bSStefan Reinauer SCSI devices found during the last scan. 1195 447c031bSStefan Reinauer 1196 c609719bSwdenk- NETWORK Support (PCI): 1197 682011ffSwdenk CONFIG_E1000 1198 ce5207e1SKyle Moffett Support for Intel 8254x/8257x gigabit chips. 1199 ce5207e1SKyle Moffett 1200 ce5207e1SKyle Moffett CONFIG_E1000_SPI 1201 ce5207e1SKyle Moffett Utility code for direct access to the SPI bus on Intel 8257x. 1202 ce5207e1SKyle Moffett This does not do anything useful unless you set at least one 1203 ce5207e1SKyle Moffett of CONFIG_CMD_E1000 or CONFIG_E1000_SPI_GENERIC. 1204 ce5207e1SKyle Moffett 1205 ce5207e1SKyle Moffett CONFIG_E1000_SPI_GENERIC 1206 ce5207e1SKyle Moffett Allow generic access to the SPI bus on the Intel 8257x, for 1207 ce5207e1SKyle Moffett example with the "sspi" command. 1208 ce5207e1SKyle Moffett 1209 ce5207e1SKyle Moffett CONFIG_CMD_E1000 1210 ce5207e1SKyle Moffett Management command for E1000 devices. When used on devices 1211 ce5207e1SKyle Moffett with SPI support you can reprogram the EEPROM from U-Boot. 1212 682011ffSwdenk 1213 ac3315c2SAndre Schwarz CONFIG_E1000_FALLBACK_MAC 1214 11ccc33fSMarcel Ziswiler default MAC for empty EEPROM after production. 1215 ac3315c2SAndre Schwarz 1216 c609719bSwdenk CONFIG_EEPRO100 1217 c609719bSwdenk Support for Intel 82557/82559/82559ER chips. 1218 11ccc33fSMarcel Ziswiler Optional CONFIG_EEPRO100_SROM_WRITE enables EEPROM 1219 c609719bSwdenk write routine for first time initialisation. 1220 c609719bSwdenk 1221 c609719bSwdenk CONFIG_TULIP 1222 c609719bSwdenk Support for Digital 2114x chips. 1223 c609719bSwdenk Optional CONFIG_TULIP_SELECT_MEDIA for board specific 1224 c609719bSwdenk modem chip initialisation (KS8761/QS6611). 1225 c609719bSwdenk 1226 c609719bSwdenk CONFIG_NATSEMI 1227 c609719bSwdenk Support for National dp83815 chips. 1228 c609719bSwdenk 1229 c609719bSwdenk CONFIG_NS8382X 1230 c609719bSwdenk Support for National dp8382[01] gigabit chips. 1231 c609719bSwdenk 1232 45219c46Swdenk- NETWORK Support (other): 1233 45219c46Swdenk 1234 c041e9d2SJens Scharsig CONFIG_DRIVER_AT91EMAC 1235 c041e9d2SJens Scharsig Support for AT91RM9200 EMAC. 1236 c041e9d2SJens Scharsig 1237 c041e9d2SJens Scharsig CONFIG_RMII 1238 c041e9d2SJens Scharsig Define this to use reduced MII inteface 1239 c041e9d2SJens Scharsig 1240 c041e9d2SJens Scharsig CONFIG_DRIVER_AT91EMAC_QUIET 1241 c041e9d2SJens Scharsig If this defined, the driver is quiet. 1242 c041e9d2SJens Scharsig The driver doen't show link status messages. 1243 c041e9d2SJens Scharsig 1244 efdd7319SRob Herring CONFIG_CALXEDA_XGMAC 1245 efdd7319SRob Herring Support for the Calxeda XGMAC device 1246 efdd7319SRob Herring 1247 3bb46d23SAshok CONFIG_LAN91C96 1248 45219c46Swdenk Support for SMSC's LAN91C96 chips. 1249 45219c46Swdenk 1250 45219c46Swdenk CONFIG_LAN91C96_BASE 1251 45219c46Swdenk Define this to hold the physical address 1252 45219c46Swdenk of the LAN91C96's I/O space 1253 45219c46Swdenk 1254 45219c46Swdenk CONFIG_LAN91C96_USE_32_BIT 1255 45219c46Swdenk Define this to enable 32 bit addressing 1256 45219c46Swdenk 1257 3bb46d23SAshok CONFIG_SMC91111 1258 f39748aeSwdenk Support for SMSC's LAN91C111 chip 1259 f39748aeSwdenk 1260 f39748aeSwdenk CONFIG_SMC91111_BASE 1261 f39748aeSwdenk Define this to hold the physical address 1262 f39748aeSwdenk of the device (I/O space) 1263 f39748aeSwdenk 1264 f39748aeSwdenk CONFIG_SMC_USE_32_BIT 1265 f39748aeSwdenk Define this if data bus is 32 bits 1266 f39748aeSwdenk 1267 f39748aeSwdenk CONFIG_SMC_USE_IOFUNCS 1268 f39748aeSwdenk Define this to use i/o functions instead of macros 1269 f39748aeSwdenk (some hardware wont work with macros) 1270 f39748aeSwdenk 1271 dc02badaSHeiko Schocher CONFIG_DRIVER_TI_EMAC 1272 dc02badaSHeiko Schocher Support for davinci emac 1273 dc02badaSHeiko Schocher 1274 dc02badaSHeiko Schocher CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT 1275 dc02badaSHeiko Schocher Define this if you have more then 3 PHYs. 1276 dc02badaSHeiko Schocher 1277 b3dbf4a5SMacpaul Lin CONFIG_FTGMAC100 1278 b3dbf4a5SMacpaul Lin Support for Faraday's FTGMAC100 Gigabit SoC Ethernet 1279 b3dbf4a5SMacpaul Lin 1280 b3dbf4a5SMacpaul Lin CONFIG_FTGMAC100_EGIGA 1281 b3dbf4a5SMacpaul Lin Define this to use GE link update with gigabit PHY. 1282 b3dbf4a5SMacpaul Lin Define this if FTGMAC100 is connected to gigabit PHY. 1283 b3dbf4a5SMacpaul Lin If your system has 10/100 PHY only, it might not occur 1284 b3dbf4a5SMacpaul Lin wrong behavior. Because PHY usually return timeout or 1285 b3dbf4a5SMacpaul Lin useless data when polling gigabit status and gigabit 1286 b3dbf4a5SMacpaul Lin control registers. This behavior won't affect the 1287 b3dbf4a5SMacpaul Lin correctnessof 10/100 link speed update. 1288 b3dbf4a5SMacpaul Lin 1289 c2fff331SMike Rapoport CONFIG_SMC911X 1290 557b377dSJens Gehrlein Support for SMSC's LAN911x and LAN921x chips 1291 557b377dSJens Gehrlein 1292 c2fff331SMike Rapoport CONFIG_SMC911X_BASE 1293 557b377dSJens Gehrlein Define this to hold the physical address 1294 557b377dSJens Gehrlein of the device (I/O space) 1295 557b377dSJens Gehrlein 1296 c2fff331SMike Rapoport CONFIG_SMC911X_32_BIT 1297 557b377dSJens Gehrlein Define this if data bus is 32 bits 1298 557b377dSJens Gehrlein 1299 c2fff331SMike Rapoport CONFIG_SMC911X_16_BIT 1300 557b377dSJens Gehrlein Define this if data bus is 16 bits. If your processor 1301 557b377dSJens Gehrlein automatically converts one 32 bit word to two 16 bit 1302 c2fff331SMike Rapoport words you may also try CONFIG_SMC911X_32_BIT. 1303 557b377dSJens Gehrlein 1304 3d0075faSYoshihiro Shimoda CONFIG_SH_ETHER 1305 3d0075faSYoshihiro Shimoda Support for Renesas on-chip Ethernet controller 1306 3d0075faSYoshihiro Shimoda 1307 3d0075faSYoshihiro Shimoda CONFIG_SH_ETHER_USE_PORT 1308 3d0075faSYoshihiro Shimoda Define the number of ports to be used 1309 3d0075faSYoshihiro Shimoda 1310 3d0075faSYoshihiro Shimoda CONFIG_SH_ETHER_PHY_ADDR 1311 3d0075faSYoshihiro Shimoda Define the ETH PHY's address 1312 3d0075faSYoshihiro Shimoda 1313 68260aabSYoshihiro Shimoda CONFIG_SH_ETHER_CACHE_WRITEBACK 1314 68260aabSYoshihiro Shimoda If this option is set, the driver enables cache flush. 1315 68260aabSYoshihiro Shimoda 1316 5e124724SVadim Bendebury- TPM Support: 1317 90899cc0SChe-liang Chiou CONFIG_TPM 1318 90899cc0SChe-liang Chiou Support TPM devices. 1319 90899cc0SChe-liang Chiou 1320 1b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C 1321 1b393db5STom Wai-Hong Tam Support for i2c bus TPM devices. Only one device 1322 1b393db5STom Wai-Hong Tam per system is supported at this time. 1323 1b393db5STom Wai-Hong Tam 1324 1b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_BUS_NUMBER 1325 1b393db5STom Wai-Hong Tam Define the the i2c bus number for the TPM device 1326 1b393db5STom Wai-Hong Tam 1327 1b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_SLAVE_ADDRESS 1328 1b393db5STom Wai-Hong Tam Define the TPM's address on the i2c bus 1329 1b393db5STom Wai-Hong Tam 1330 1b393db5STom Wai-Hong Tam CONFIG_TPM_TIS_I2C_BURST_LIMITATION 1331 1b393db5STom Wai-Hong Tam Define the burst count bytes upper limit 1332 1b393db5STom Wai-Hong Tam 1333 c01939c7SDirk Eibach CONFIG_TPM_ATMEL_TWI 1334 c01939c7SDirk Eibach Support for Atmel TWI TPM device. Requires I2C support. 1335 c01939c7SDirk Eibach 1336 90899cc0SChe-liang Chiou CONFIG_TPM_TIS_LPC 1337 5e124724SVadim Bendebury Support for generic parallel port TPM devices. Only one device 1338 5e124724SVadim Bendebury per system is supported at this time. 1339 5e124724SVadim Bendebury 1340 5e124724SVadim Bendebury CONFIG_TPM_TIS_BASE_ADDRESS 1341 5e124724SVadim Bendebury Base address where the generic TPM device is mapped 1342 5e124724SVadim Bendebury to. Contemporary x86 systems usually map it at 1343 5e124724SVadim Bendebury 0xfed40000. 1344 5e124724SVadim Bendebury 1345 be6c1529SReinhard Pfau CONFIG_CMD_TPM 1346 be6c1529SReinhard Pfau Add tpm monitor functions. 1347 be6c1529SReinhard Pfau Requires CONFIG_TPM. If CONFIG_TPM_AUTH_SESSIONS is set, also 1348 be6c1529SReinhard Pfau provides monitor access to authorized functions. 1349 be6c1529SReinhard Pfau 1350 be6c1529SReinhard Pfau CONFIG_TPM 1351 be6c1529SReinhard Pfau Define this to enable the TPM support library which provides 1352 be6c1529SReinhard Pfau functional interfaces to some TPM commands. 1353 be6c1529SReinhard Pfau Requires support for a TPM device. 1354 be6c1529SReinhard Pfau 1355 be6c1529SReinhard Pfau CONFIG_TPM_AUTH_SESSIONS 1356 be6c1529SReinhard Pfau Define this to enable authorized functions in the TPM library. 1357 be6c1529SReinhard Pfau Requires CONFIG_TPM and CONFIG_SHA1. 1358 be6c1529SReinhard Pfau 1359 c609719bSwdenk- USB Support: 1360 c609719bSwdenk At the moment only the UHCI host controller is 1361 4d13cbadSwdenk supported (PIP405, MIP405, MPC5200); define 1362 c609719bSwdenk CONFIG_USB_UHCI to enable it. 1363 c609719bSwdenk define CONFIG_USB_KEYBOARD to enable the USB Keyboard 1364 30d56faeSwdenk and define CONFIG_USB_STORAGE to enable the USB 1365 c609719bSwdenk storage devices. 1366 c609719bSwdenk Note: 1367 c609719bSwdenk Supported are USB Keyboards and USB Floppy drives 1368 c609719bSwdenk (TEAC FD-05PUB). 1369 4d13cbadSwdenk MPC5200 USB requires additional defines: 1370 4d13cbadSwdenk CONFIG_USB_CLOCK 1371 4d13cbadSwdenk for 528 MHz Clock: 0x0001bbbb 1372 307ecb6dSEric Millbrandt CONFIG_PSC3_USB 1373 307ecb6dSEric Millbrandt for USB on PSC3 1374 4d13cbadSwdenk CONFIG_USB_CONFIG 1375 4d13cbadSwdenk for differential drivers: 0x00001000 1376 4d13cbadSwdenk for single ended drivers: 0x00005000 1377 307ecb6dSEric Millbrandt for differential drivers on PSC3: 0x00000100 1378 307ecb6dSEric Millbrandt for single ended drivers on PSC3: 0x00004100 1379 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_EVENT_POLL 1380 fdcfaa1bSZhang Wei May be defined to allow interrupt polling 1381 fdcfaa1bSZhang Wei instead of using asynchronous interrupts 1382 4d13cbadSwdenk 1383 9ab4ce22SSimon Glass CONFIG_USB_EHCI_TXFIFO_THRESH enables setting of the 1384 9ab4ce22SSimon Glass txfilltuning field in the EHCI controller on reset. 1385 9ab4ce22SSimon Glass 1386 aa155058SKuo-Jung Su CONFIG_USB_HUB_MIN_POWER_ON_DELAY defines the minimum 1387 aa155058SKuo-Jung Su interval for usb hub power-on delay.(minimum 100msec) 1388 aa155058SKuo-Jung Su 1389 16c8d5e7SWolfgang Denk- USB Device: 1390 16c8d5e7SWolfgang Denk Define the below if you wish to use the USB console. 1391 16c8d5e7SWolfgang Denk Once firmware is rebuilt from a serial console issue the 1392 16c8d5e7SWolfgang Denk command "setenv stdin usbtty; setenv stdout usbtty" and 1393 11ccc33fSMarcel Ziswiler attach your USB cable. The Unix command "dmesg" should print 1394 16c8d5e7SWolfgang Denk it has found a new device. The environment variable usbtty 1395 16c8d5e7SWolfgang Denk can be set to gserial or cdc_acm to enable your device to 1396 16c8d5e7SWolfgang Denk appear to a USB host as a Linux gserial device or a 1397 16c8d5e7SWolfgang Denk Common Device Class Abstract Control Model serial device. 1398 16c8d5e7SWolfgang Denk If you select usbtty = gserial you should be able to enumerate 1399 16c8d5e7SWolfgang Denk a Linux host by 1400 16c8d5e7SWolfgang Denk # modprobe usbserial vendor=0xVendorID product=0xProductID 1401 16c8d5e7SWolfgang Denk else if using cdc_acm, simply setting the environment 1402 16c8d5e7SWolfgang Denk variable usbtty to be cdc_acm should suffice. The following 1403 16c8d5e7SWolfgang Denk might be defined in YourBoardName.h 1404 16c8d5e7SWolfgang Denk 1405 16c8d5e7SWolfgang Denk CONFIG_USB_DEVICE 1406 16c8d5e7SWolfgang Denk Define this to build a UDC device 1407 16c8d5e7SWolfgang Denk 1408 16c8d5e7SWolfgang Denk CONFIG_USB_TTY 1409 16c8d5e7SWolfgang Denk Define this to have a tty type of device available to 1410 16c8d5e7SWolfgang Denk talk to the UDC device 1411 16c8d5e7SWolfgang Denk 1412 f9da0f89SVipin KUMAR CONFIG_USBD_HS 1413 f9da0f89SVipin KUMAR Define this to enable the high speed support for usb 1414 f9da0f89SVipin KUMAR device and usbtty. If this feature is enabled, a routine 1415 f9da0f89SVipin KUMAR int is_usbd_high_speed(void) 1416 f9da0f89SVipin KUMAR also needs to be defined by the driver to dynamically poll 1417 f9da0f89SVipin KUMAR whether the enumeration has succeded at high speed or full 1418 f9da0f89SVipin KUMAR speed. 1419 f9da0f89SVipin KUMAR 1420 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CONSOLE_IS_IN_ENV 1421 16c8d5e7SWolfgang Denk Define this if you want stdin, stdout &/or stderr to 1422 16c8d5e7SWolfgang Denk be set to usbtty. 1423 16c8d5e7SWolfgang Denk 1424 16c8d5e7SWolfgang Denk mpc8xx: 1425 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_EXTC_CLK 0xBLAH 1426 16c8d5e7SWolfgang Denk Derive USB clock from external clock "blah" 1427 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_USB_EXTC_CLK 0x02 1428 16c8d5e7SWolfgang Denk 1429 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_USB_BRG_CLK 0xBLAH 1430 16c8d5e7SWolfgang Denk Derive USB clock from brgclk 1431 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_USB_BRG_CLK 0x04 1432 16c8d5e7SWolfgang Denk 1433 16c8d5e7SWolfgang Denk If you have a USB-IF assigned VendorID then you may wish to 1434 16c8d5e7SWolfgang Denk define your own vendor specific values either in BoardName.h 1435 16c8d5e7SWolfgang Denk or directly in usbd_vendor_info.h. If you don't define 1436 16c8d5e7SWolfgang Denk CONFIG_USBD_MANUFACTURER, CONFIG_USBD_PRODUCT_NAME, 1437 16c8d5e7SWolfgang Denk CONFIG_USBD_VENDORID and CONFIG_USBD_PRODUCTID, then U-Boot 1438 16c8d5e7SWolfgang Denk should pretend to be a Linux device to it's target host. 1439 16c8d5e7SWolfgang Denk 1440 16c8d5e7SWolfgang Denk CONFIG_USBD_MANUFACTURER 1441 16c8d5e7SWolfgang Denk Define this string as the name of your company for 1442 16c8d5e7SWolfgang Denk - CONFIG_USBD_MANUFACTURER "my company" 1443 16c8d5e7SWolfgang Denk 1444 16c8d5e7SWolfgang Denk CONFIG_USBD_PRODUCT_NAME 1445 16c8d5e7SWolfgang Denk Define this string as the name of your product 1446 16c8d5e7SWolfgang Denk - CONFIG_USBD_PRODUCT_NAME "acme usb device" 1447 16c8d5e7SWolfgang Denk 1448 16c8d5e7SWolfgang Denk CONFIG_USBD_VENDORID 1449 16c8d5e7SWolfgang Denk Define this as your assigned Vendor ID from the USB 1450 16c8d5e7SWolfgang Denk Implementors Forum. This *must* be a genuine Vendor ID 1451 16c8d5e7SWolfgang Denk to avoid polluting the USB namespace. 1452 16c8d5e7SWolfgang Denk - CONFIG_USBD_VENDORID 0xFFFF 1453 16c8d5e7SWolfgang Denk 1454 16c8d5e7SWolfgang Denk CONFIG_USBD_PRODUCTID 1455 16c8d5e7SWolfgang Denk Define this as the unique Product ID 1456 16c8d5e7SWolfgang Denk for your device 1457 16c8d5e7SWolfgang Denk - CONFIG_USBD_PRODUCTID 0xFFFF 1458 c609719bSwdenk 1459 351e9b20SPrzemyslaw Marczak Some USB device drivers may need to check USB cable attachment. 1460 351e9b20SPrzemyslaw Marczak In this case you can enable following config in BoardName.h: 1461 351e9b20SPrzemyslaw Marczak CONFIG_USB_CABLE_CHECK 1462 351e9b20SPrzemyslaw Marczak This enables function definition: 1463 351e9b20SPrzemyslaw Marczak - usb_cable_connected() in include/usb.h 1464 351e9b20SPrzemyslaw Marczak Implementation of this function is board-specific. 1465 351e9b20SPrzemyslaw Marczak 1466 d70a560fSIgor Grinberg- ULPI Layer Support: 1467 d70a560fSIgor Grinberg The ULPI (UTMI Low Pin (count) Interface) PHYs are supported via 1468 d70a560fSIgor Grinberg the generic ULPI layer. The generic layer accesses the ULPI PHY 1469 d70a560fSIgor Grinberg via the platform viewport, so you need both the genric layer and 1470 d70a560fSIgor Grinberg the viewport enabled. Currently only Chipidea/ARC based 1471 d70a560fSIgor Grinberg viewport is supported. 1472 d70a560fSIgor Grinberg To enable the ULPI layer support, define CONFIG_USB_ULPI and 1473 d70a560fSIgor Grinberg CONFIG_USB_ULPI_VIEWPORT in your board configuration file. 1474 6d365ea0SLucas Stach If your ULPI phy needs a different reference clock than the 1475 6d365ea0SLucas Stach standard 24 MHz then you have to define CONFIG_ULPI_REF_CLK to 1476 6d365ea0SLucas Stach the appropriate value in Hz. 1477 c609719bSwdenk 1478 c609719bSwdenk- MMC Support: 1479 c609719bSwdenk The MMC controller on the Intel PXA is supported. To 1480 c609719bSwdenk enable this define CONFIG_MMC. The MMC can be 1481 c609719bSwdenk accessed from the boot prompt by mapping the device 1482 c609719bSwdenk to physical memory similar to flash. Command line is 1483 602ad3b3SJon Loeliger enabled with CONFIG_CMD_MMC. The MMC driver also works with 1484 602ad3b3SJon Loeliger the FAT fs. This is enabled with CONFIG_CMD_FAT. 1485 c609719bSwdenk 1486 afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF 1487 afb35666SYoshihiro Shimoda Support for Renesas on-chip MMCIF controller 1488 afb35666SYoshihiro Shimoda 1489 afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF_ADDR 1490 afb35666SYoshihiro Shimoda Define the base address of MMCIF registers 1491 afb35666SYoshihiro Shimoda 1492 afb35666SYoshihiro Shimoda CONFIG_SH_MMCIF_CLK 1493 afb35666SYoshihiro Shimoda Define the clock frequency for MMCIF 1494 afb35666SYoshihiro Shimoda 1495 b3ba6e94STom Rini- USB Device Firmware Update (DFU) class support: 1496 b3ba6e94STom Rini CONFIG_DFU_FUNCTION 1497 b3ba6e94STom Rini This enables the USB portion of the DFU USB class 1498 b3ba6e94STom Rini 1499 b3ba6e94STom Rini CONFIG_CMD_DFU 1500 b3ba6e94STom Rini This enables the command "dfu" which is used to have 1501 b3ba6e94STom Rini U-Boot create a DFU class device via USB. This command 1502 b3ba6e94STom Rini requires that the "dfu_alt_info" environment variable be 1503 b3ba6e94STom Rini set and define the alt settings to expose to the host. 1504 b3ba6e94STom Rini 1505 b3ba6e94STom Rini CONFIG_DFU_MMC 1506 b3ba6e94STom Rini This enables support for exposing (e)MMC devices via DFU. 1507 b3ba6e94STom Rini 1508 c6631764SPantelis Antoniou CONFIG_DFU_NAND 1509 c6631764SPantelis Antoniou This enables support for exposing NAND devices via DFU. 1510 c6631764SPantelis Antoniou 1511 a9479f04SAfzal Mohammed CONFIG_DFU_RAM 1512 a9479f04SAfzal Mohammed This enables support for exposing RAM via DFU. 1513 a9479f04SAfzal Mohammed Note: DFU spec refer to non-volatile memory usage, but 1514 a9479f04SAfzal Mohammed allow usages beyond the scope of spec - here RAM usage, 1515 a9479f04SAfzal Mohammed one that would help mostly the developer. 1516 a9479f04SAfzal Mohammed 1517 e7e75c70SHeiko Schocher CONFIG_SYS_DFU_DATA_BUF_SIZE 1518 e7e75c70SHeiko Schocher Dfu transfer uses a buffer before writing data to the 1519 e7e75c70SHeiko Schocher raw storage device. Make the size (in bytes) of this buffer 1520 e7e75c70SHeiko Schocher configurable. The size of this buffer is also configurable 1521 e7e75c70SHeiko Schocher through the "dfu_bufsiz" environment variable. 1522 e7e75c70SHeiko Schocher 1523 ea2453d5SPantelis Antoniou CONFIG_SYS_DFU_MAX_FILE_SIZE 1524 ea2453d5SPantelis Antoniou When updating files rather than the raw storage device, 1525 ea2453d5SPantelis Antoniou we use a static buffer to copy the file into and then write 1526 ea2453d5SPantelis Antoniou the buffer once we've been given the whole file. Define 1527 ea2453d5SPantelis Antoniou this to the maximum filesize (in bytes) for the buffer. 1528 ea2453d5SPantelis Antoniou Default is 4 MiB if undefined. 1529 ea2453d5SPantelis Antoniou 1530 001a8319SHeiko Schocher DFU_DEFAULT_POLL_TIMEOUT 1531 001a8319SHeiko Schocher Poll timeout [ms], is the timeout a device can send to the 1532 001a8319SHeiko Schocher host. The host must wait for this timeout before sending 1533 001a8319SHeiko Schocher a subsequent DFU_GET_STATUS request to the device. 1534 001a8319SHeiko Schocher 1535 001a8319SHeiko Schocher DFU_MANIFEST_POLL_TIMEOUT 1536 001a8319SHeiko Schocher Poll timeout [ms], which the device sends to the host when 1537 001a8319SHeiko Schocher entering dfuMANIFEST state. Host waits this timeout, before 1538 001a8319SHeiko Schocher sending again an USB request to the device. 1539 001a8319SHeiko Schocher 1540 6705d81eSwdenk- Journaling Flash filesystem support: 1541 6705d81eSwdenk CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE, 1542 6705d81eSwdenk CONFIG_JFFS2_NAND_DEV 1543 6705d81eSwdenk Define these for a default partition on a NAND device 1544 6705d81eSwdenk 1545 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS2_FIRST_SECTOR, 1546 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS2_FIRST_BANK, CONFIG_SYS_JFFS2_NUM_BANKS 1547 6705d81eSwdenk Define these for a default partition on a NOR device 1548 6705d81eSwdenk 1549 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_JFFS_CUSTOM_PART 1550 6705d81eSwdenk Define this to create an own partition. You have to provide a 1551 6705d81eSwdenk function struct part_info* jffs2_part_info(int part_num) 1552 6705d81eSwdenk 1553 6705d81eSwdenk If you define only one JFFS2 partition you may also want to 1554 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_JFFS_SINGLE_PART 1 1555 6705d81eSwdenk to disable the command chpart. This is the default when you 1556 6705d81eSwdenk have not defined a custom partition 1557 6705d81eSwdenk 1558 c30a15e5SDonggeun Kim- FAT(File Allocation Table) filesystem write function support: 1559 c30a15e5SDonggeun Kim CONFIG_FAT_WRITE 1560 656f4c65SDonggeun Kim 1561 656f4c65SDonggeun Kim Define this to enable support for saving memory data as a 1562 656f4c65SDonggeun Kim file in FAT formatted partition. 1563 656f4c65SDonggeun Kim 1564 656f4c65SDonggeun Kim This will also enable the command "fatwrite" enabling the 1565 656f4c65SDonggeun Kim user to write files to FAT. 1566 c30a15e5SDonggeun Kim 1567 84cd9327SGabe BlackCBFS (Coreboot Filesystem) support 1568 84cd9327SGabe Black CONFIG_CMD_CBFS 1569 84cd9327SGabe Black 1570 84cd9327SGabe Black Define this to enable support for reading from a Coreboot 1571 84cd9327SGabe Black filesystem. Available commands are cbfsinit, cbfsinfo, cbfsls 1572 84cd9327SGabe Black and cbfsload. 1573 84cd9327SGabe Black 1574 c609719bSwdenk- Keyboard Support: 1575 c609719bSwdenk CONFIG_ISA_KEYBOARD 1576 c609719bSwdenk 1577 c609719bSwdenk Define this to enable standard (PC-Style) keyboard 1578 c609719bSwdenk support 1579 c609719bSwdenk 1580 c609719bSwdenk CONFIG_I8042_KBD 1581 c609719bSwdenk Standard PC keyboard driver with US (is default) and 1582 c609719bSwdenk GERMAN key layout (switch via environment 'keymap=de') support. 1583 c609719bSwdenk Export function i8042_kbd_init, i8042_tstc and i8042_getc 1584 c609719bSwdenk for cfb_console. Supports cursor blinking. 1585 c609719bSwdenk 1586 713cb680SHung-ying Tyan CONFIG_CROS_EC_KEYB 1587 713cb680SHung-ying Tyan Enables a Chrome OS keyboard using the CROS_EC interface. 1588 713cb680SHung-ying Tyan This uses CROS_EC to communicate with a second microcontroller 1589 713cb680SHung-ying Tyan which provides key scans on request. 1590 713cb680SHung-ying Tyan 1591 c609719bSwdenk- Video support: 1592 c609719bSwdenk CONFIG_VIDEO 1593 c609719bSwdenk 1594 c609719bSwdenk Define this to enable video support (for output to 1595 c609719bSwdenk video). 1596 c609719bSwdenk 1597 c609719bSwdenk CONFIG_VIDEO_CT69000 1598 c609719bSwdenk 1599 c609719bSwdenk Enable Chips & Technologies 69000 Video chip 1600 c609719bSwdenk 1601 c609719bSwdenk CONFIG_VIDEO_SMI_LYNXEM 1602 eeb1b77bSwdenk Enable Silicon Motion SMI 712/710/810 Video chip. The 1603 eeb1b77bSwdenk video output is selected via environment 'videoout' 1604 eeb1b77bSwdenk (1 = LCD and 2 = CRT). If videoout is undefined, CRT is 1605 eeb1b77bSwdenk assumed. 1606 c609719bSwdenk 1607 eeb1b77bSwdenk For the CT69000 and SMI_LYNXEM drivers, videomode is 1608 11ccc33fSMarcel Ziswiler selected via environment 'videomode'. Two different ways 1609 eeb1b77bSwdenk are possible: 1610 eeb1b77bSwdenk - "videomode=num" 'num' is a standard LiLo mode numbers. 1611 eeb1b77bSwdenk Following standard modes are supported (* is default): 1612 eeb1b77bSwdenk 1613 eeb1b77bSwdenk Colors 640x480 800x600 1024x768 1152x864 1280x1024 1614 eeb1b77bSwdenk -------------+--------------------------------------------- 1615 eeb1b77bSwdenk 8 bits | 0x301* 0x303 0x305 0x161 0x307 1616 eeb1b77bSwdenk 15 bits | 0x310 0x313 0x316 0x162 0x319 1617 eeb1b77bSwdenk 16 bits | 0x311 0x314 0x317 0x163 0x31A 1618 eeb1b77bSwdenk 24 bits | 0x312 0x315 0x318 ? 0x31B 1619 eeb1b77bSwdenk -------------+--------------------------------------------- 1620 c609719bSwdenk (i.e. setenv videomode 317; saveenv; reset;) 1621 c609719bSwdenk 1622 eeb1b77bSwdenk - "videomode=bootargs" all the video parameters are parsed 1623 7817cb20SMarcel Ziswiler from the bootargs. (See drivers/video/videomodes.c) 1624 eeb1b77bSwdenk 1625 eeb1b77bSwdenk 1626 a6c7ad2fSwdenk CONFIG_VIDEO_SED13806 1627 a6c7ad2fSwdenk Enable Epson SED13806 driver. This driver supports 8bpp 1628 a6c7ad2fSwdenk and 16bpp modes defined by CONFIG_VIDEO_SED13806_8BPP 1629 a6c7ad2fSwdenk or CONFIG_VIDEO_SED13806_16BPP 1630 a6c7ad2fSwdenk 1631 7d3053fbSTimur Tabi CONFIG_FSL_DIU_FB 1632 7d3053fbSTimur Tabi Enable the Freescale DIU video driver. Reference boards for 1633 7d3053fbSTimur Tabi SOCs that have a DIU should define this macro to enable DIU 1634 7d3053fbSTimur Tabi support, and should also define these other macros: 1635 7d3053fbSTimur Tabi 1636 7d3053fbSTimur Tabi CONFIG_SYS_DIU_ADDR 1637 7d3053fbSTimur Tabi CONFIG_VIDEO 1638 7d3053fbSTimur Tabi CONFIG_CMD_BMP 1639 7d3053fbSTimur Tabi CONFIG_CFB_CONSOLE 1640 7d3053fbSTimur Tabi CONFIG_VIDEO_SW_CURSOR 1641 7d3053fbSTimur Tabi CONFIG_VGA_AS_SINGLE_DEVICE 1642 7d3053fbSTimur Tabi CONFIG_VIDEO_LOGO 1643 7d3053fbSTimur Tabi CONFIG_VIDEO_BMP_LOGO 1644 7d3053fbSTimur Tabi 1645 ba8e76bdSTimur Tabi The DIU driver will look for the 'video-mode' environment 1646 ba8e76bdSTimur Tabi variable, and if defined, enable the DIU as a console during 1647 ba8e76bdSTimur Tabi boot. See the documentation file README.video for a 1648 ba8e76bdSTimur Tabi description of this variable. 1649 7d3053fbSTimur Tabi 1650 058d59b0SSimon Glass CONFIG_VIDEO_VGA 1651 058d59b0SSimon Glass 1652 058d59b0SSimon Glass Enable the VGA video / BIOS for x86. The alternative if you 1653 058d59b0SSimon Glass are using coreboot is to use the coreboot frame buffer 1654 058d59b0SSimon Glass driver. 1655 058d59b0SSimon Glass 1656 058d59b0SSimon Glass 1657 682011ffSwdenk- Keyboard Support: 1658 682011ffSwdenk CONFIG_KEYBOARD 1659 682011ffSwdenk 1660 682011ffSwdenk Define this to enable a custom keyboard support. 1661 682011ffSwdenk This simply calls drv_keyboard_init() which must be 1662 682011ffSwdenk defined in your board-specific files. 1663 682011ffSwdenk The only board using this so far is RBC823. 1664 a6c7ad2fSwdenk 1665 c609719bSwdenk- LCD Support: CONFIG_LCD 1666 c609719bSwdenk 1667 c609719bSwdenk Define this to enable LCD support (for output to LCD 1668 c609719bSwdenk display); also select one of the supported displays 1669 c609719bSwdenk by defining one of these: 1670 c609719bSwdenk 1671 39cf4804SStelian Pop CONFIG_ATMEL_LCD: 1672 39cf4804SStelian Pop 1673 39cf4804SStelian Pop HITACHI TX09D70VM1CCA, 3.5", 240x320. 1674 39cf4804SStelian Pop 1675 fd3103bbSwdenk CONFIG_NEC_NL6448AC33: 1676 c609719bSwdenk 1677 fd3103bbSwdenk NEC NL6448AC33-18. Active, color, single scan. 1678 c609719bSwdenk 1679 fd3103bbSwdenk CONFIG_NEC_NL6448BC20 1680 c609719bSwdenk 1681 fd3103bbSwdenk NEC NL6448BC20-08. 6.5", 640x480. 1682 fd3103bbSwdenk Active, color, single scan. 1683 fd3103bbSwdenk 1684 fd3103bbSwdenk CONFIG_NEC_NL6448BC33_54 1685 fd3103bbSwdenk 1686 fd3103bbSwdenk NEC NL6448BC33-54. 10.4", 640x480. 1687 c609719bSwdenk Active, color, single scan. 1688 c609719bSwdenk 1689 c609719bSwdenk CONFIG_SHARP_16x9 1690 c609719bSwdenk 1691 c609719bSwdenk Sharp 320x240. Active, color, single scan. 1692 c609719bSwdenk It isn't 16x9, and I am not sure what it is. 1693 c609719bSwdenk 1694 c609719bSwdenk CONFIG_SHARP_LQ64D341 1695 c609719bSwdenk 1696 c609719bSwdenk Sharp LQ64D341 display, 640x480. 1697 c609719bSwdenk Active, color, single scan. 1698 c609719bSwdenk 1699 c609719bSwdenk CONFIG_HLD1045 1700 c609719bSwdenk 1701 c609719bSwdenk HLD1045 display, 640x480. 1702 c609719bSwdenk Active, color, single scan. 1703 c609719bSwdenk 1704 c609719bSwdenk CONFIG_OPTREX_BW 1705 c609719bSwdenk 1706 c609719bSwdenk Optrex CBL50840-2 NF-FW 99 22 M5 1707 c609719bSwdenk or 1708 c609719bSwdenk Hitachi LMG6912RPFC-00T 1709 c609719bSwdenk or 1710 c609719bSwdenk Hitachi SP14Q002 1711 c609719bSwdenk 1712 c609719bSwdenk 320x240. Black & white. 1713 c609719bSwdenk 1714 c609719bSwdenk Normally display is black on white background; define 1715 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_WHITE_ON_BLACK to get it inverted. 1716 c609719bSwdenk 1717 676d319eSSimon Glass CONFIG_LCD_ALIGNMENT 1718 676d319eSSimon Glass 1719 676d319eSSimon Glass Normally the LCD is page-aligned (tyically 4KB). If this is 1720 676d319eSSimon Glass defined then the LCD will be aligned to this value instead. 1721 676d319eSSimon Glass For ARM it is sometimes useful to use MMU_SECTION_SIZE 1722 676d319eSSimon Glass here, since it is cheaper to change data cache settings on 1723 676d319eSSimon Glass a per-section basis. 1724 676d319eSSimon Glass 1725 0d89efefSSimon Glass CONFIG_CONSOLE_SCROLL_LINES 1726 0d89efefSSimon Glass 1727 0d89efefSSimon Glass When the console need to be scrolled, this is the number of 1728 0d89efefSSimon Glass lines to scroll by. It defaults to 1. Increasing this makes 1729 0d89efefSSimon Glass the console jump but can help speed up operation when scrolling 1730 0d89efefSSimon Glass is slow. 1731 676d319eSSimon Glass 1732 45d7f525STom Wai-Hong Tam CONFIG_LCD_BMP_RLE8 1733 45d7f525STom Wai-Hong Tam 1734 45d7f525STom Wai-Hong Tam Support drawing of RLE8-compressed bitmaps on the LCD. 1735 45d7f525STom Wai-Hong Tam 1736 735987c5STom Wai-Hong Tam CONFIG_I2C_EDID 1737 735987c5STom Wai-Hong Tam 1738 735987c5STom Wai-Hong Tam Enables an 'i2c edid' command which can read EDID 1739 735987c5STom Wai-Hong Tam information over I2C from an attached LCD display. 1740 735987c5STom Wai-Hong Tam 1741 7152b1d0Swdenk- Splash Screen Support: CONFIG_SPLASH_SCREEN 1742 d791b1dcSwdenk 1743 d791b1dcSwdenk If this option is set, the environment is checked for 1744 d791b1dcSwdenk a variable "splashimage". If found, the usual display 1745 d791b1dcSwdenk of logo, copyright and system information on the LCD 1746 e94d2cd9Swdenk is suppressed and the BMP image at the address 1747 d791b1dcSwdenk specified in "splashimage" is loaded instead. The 1748 d791b1dcSwdenk console is redirected to the "nulldev", too. This 1749 d791b1dcSwdenk allows for a "silent" boot where a splash screen is 1750 d791b1dcSwdenk loaded very quickly after power-on. 1751 d791b1dcSwdenk 1752 c0880485SNikita Kiryanov CONFIG_SPLASHIMAGE_GUARD 1753 c0880485SNikita Kiryanov 1754 c0880485SNikita Kiryanov If this option is set, then U-Boot will prevent the environment 1755 c0880485SNikita Kiryanov variable "splashimage" from being set to a problematic address 1756 1551df35STom Rini (see README.displaying-bmps). 1757 c0880485SNikita Kiryanov This option is useful for targets where, due to alignment 1758 c0880485SNikita Kiryanov restrictions, an improperly aligned BMP image will cause a data 1759 c0880485SNikita Kiryanov abort. If you think you will not have problems with unaligned 1760 c0880485SNikita Kiryanov accesses (for example because your toolchain prevents them) 1761 c0880485SNikita Kiryanov there is no need to set this option. 1762 c0880485SNikita Kiryanov 1763 1ca298ceSMatthias Weisser CONFIG_SPLASH_SCREEN_ALIGN 1764 1ca298ceSMatthias Weisser 1765 1ca298ceSMatthias Weisser If this option is set the splash image can be freely positioned 1766 1ca298ceSMatthias Weisser on the screen. Environment variable "splashpos" specifies the 1767 1ca298ceSMatthias Weisser position as "x,y". If a positive number is given it is used as 1768 1ca298ceSMatthias Weisser number of pixel from left/top. If a negative number is given it 1769 1ca298ceSMatthias Weisser is used as number of pixel from right/bottom. You can also 1770 1ca298ceSMatthias Weisser specify 'm' for centering the image. 1771 1ca298ceSMatthias Weisser 1772 1ca298ceSMatthias Weisser Example: 1773 1ca298ceSMatthias Weisser setenv splashpos m,m 1774 1ca298ceSMatthias Weisser => image at center of screen 1775 1ca298ceSMatthias Weisser 1776 1ca298ceSMatthias Weisser setenv splashpos 30,20 1777 1ca298ceSMatthias Weisser => image at x = 30 and y = 20 1778 1ca298ceSMatthias Weisser 1779 1ca298ceSMatthias Weisser setenv splashpos -10,m 1780 1ca298ceSMatthias Weisser => vertically centered image 1781 1ca298ceSMatthias Weisser at x = dspWidth - bmpWidth - 9 1782 1ca298ceSMatthias Weisser 1783 98f4a3dfSStefan Roese- Gzip compressed BMP image support: CONFIG_VIDEO_BMP_GZIP 1784 98f4a3dfSStefan Roese 1785 98f4a3dfSStefan Roese If this option is set, additionally to standard BMP 1786 98f4a3dfSStefan Roese images, gzipped BMP images can be displayed via the 1787 98f4a3dfSStefan Roese splashscreen support or the bmp command. 1788 98f4a3dfSStefan Roese 1789 d5011762SAnatolij Gustschin- Run length encoded BMP image (RLE8) support: CONFIG_VIDEO_BMP_RLE8 1790 d5011762SAnatolij Gustschin 1791 d5011762SAnatolij Gustschin If this option is set, 8-bit RLE compressed BMP images 1792 d5011762SAnatolij Gustschin can be displayed via the splashscreen support or the 1793 d5011762SAnatolij Gustschin bmp command. 1794 d5011762SAnatolij Gustschin 1795 f2b96dfbSLei Wen- Do compresssing for memory range: 1796 f2b96dfbSLei Wen CONFIG_CMD_ZIP 1797 f2b96dfbSLei Wen 1798 f2b96dfbSLei Wen If this option is set, it would use zlib deflate method 1799 f2b96dfbSLei Wen to compress the specified memory at its best effort. 1800 f2b96dfbSLei Wen 1801 c29fdfc1Swdenk- Compression support: 1802 8ef70478SKees Cook CONFIG_GZIP 1803 8ef70478SKees Cook 1804 8ef70478SKees Cook Enabled by default to support gzip compressed images. 1805 8ef70478SKees Cook 1806 c29fdfc1Swdenk CONFIG_BZIP2 1807 c29fdfc1Swdenk 1808 c29fdfc1Swdenk If this option is set, support for bzip2 compressed 1809 c29fdfc1Swdenk images is included. If not, only uncompressed and gzip 1810 c29fdfc1Swdenk compressed images are supported. 1811 c29fdfc1Swdenk 1812 c29fdfc1Swdenk NOTE: the bzip2 algorithm requires a lot of RAM, so 1813 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD the malloc area (as defined by CONFIG_SYS_MALLOC_LEN) should 1814 c29fdfc1Swdenk be at least 4MB. 1815 d791b1dcSwdenk 1816 fc9c1727SLuigi 'Comio' Mantellini CONFIG_LZMA 1817 fc9c1727SLuigi 'Comio' Mantellini 1818 fc9c1727SLuigi 'Comio' Mantellini If this option is set, support for lzma compressed 1819 fc9c1727SLuigi 'Comio' Mantellini images is included. 1820 fc9c1727SLuigi 'Comio' Mantellini 1821 fc9c1727SLuigi 'Comio' Mantellini Note: The LZMA algorithm adds between 2 and 4KB of code and it 1822 fc9c1727SLuigi 'Comio' Mantellini requires an amount of dynamic memory that is given by the 1823 fc9c1727SLuigi 'Comio' Mantellini formula: 1824 fc9c1727SLuigi 'Comio' Mantellini 1825 fc9c1727SLuigi 'Comio' Mantellini (1846 + 768 << (lc + lp)) * sizeof(uint16) 1826 fc9c1727SLuigi 'Comio' Mantellini 1827 fc9c1727SLuigi 'Comio' Mantellini Where lc and lp stand for, respectively, Literal context bits 1828 fc9c1727SLuigi 'Comio' Mantellini and Literal pos bits. 1829 fc9c1727SLuigi 'Comio' Mantellini 1830 fc9c1727SLuigi 'Comio' Mantellini This value is upper-bounded by 14MB in the worst case. Anyway, 1831 fc9c1727SLuigi 'Comio' Mantellini for a ~4MB large kernel image, we have lc=3 and lp=0 for a 1832 fc9c1727SLuigi 'Comio' Mantellini total amount of (1846 + 768 << (3 + 0)) * 2 = ~41KB... that is 1833 fc9c1727SLuigi 'Comio' Mantellini a very small buffer. 1834 fc9c1727SLuigi 'Comio' Mantellini 1835 fc9c1727SLuigi 'Comio' Mantellini Use the lzmainfo tool to determinate the lc and lp values and 1836 fc9c1727SLuigi 'Comio' Mantellini then calculate the amount of needed dynamic memory (ensuring 1837 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD the appropriate CONFIG_SYS_MALLOC_LEN value). 1838 fc9c1727SLuigi 'Comio' Mantellini 1839 8ef70478SKees Cook CONFIG_LZO 1840 8ef70478SKees Cook 1841 8ef70478SKees Cook If this option is set, support for LZO compressed images 1842 8ef70478SKees Cook is included. 1843 8ef70478SKees Cook 1844 17ea1177Swdenk- MII/PHY support: 1845 17ea1177Swdenk CONFIG_PHY_ADDR 1846 17ea1177Swdenk 1847 17ea1177Swdenk The address of PHY on MII bus. 1848 17ea1177Swdenk 1849 17ea1177Swdenk CONFIG_PHY_CLOCK_FREQ (ppc4xx) 1850 17ea1177Swdenk 1851 17ea1177Swdenk The clock frequency of the MII bus 1852 17ea1177Swdenk 1853 17ea1177Swdenk CONFIG_PHY_GIGE 1854 17ea1177Swdenk 1855 17ea1177Swdenk If this option is set, support for speed/duplex 1856 11ccc33fSMarcel Ziswiler detection of gigabit PHY is included. 1857 17ea1177Swdenk 1858 17ea1177Swdenk CONFIG_PHY_RESET_DELAY 1859 17ea1177Swdenk 1860 17ea1177Swdenk Some PHY like Intel LXT971A need extra delay after 1861 17ea1177Swdenk reset before any MII register access is possible. 1862 17ea1177Swdenk For such PHY, set this option to the usec delay 1863 17ea1177Swdenk required. (minimum 300usec for LXT971A) 1864 17ea1177Swdenk 1865 17ea1177Swdenk CONFIG_PHY_CMD_DELAY (ppc4xx) 1866 17ea1177Swdenk 1867 17ea1177Swdenk Some PHY like Intel LXT971A need extra delay after 1868 17ea1177Swdenk command issued before MII status register can be read 1869 17ea1177Swdenk 1870 c609719bSwdenk- Ethernet address: 1871 c609719bSwdenk CONFIG_ETHADDR 1872 c68a05feSrichardretanubun CONFIG_ETH1ADDR 1873 c609719bSwdenk CONFIG_ETH2ADDR 1874 c609719bSwdenk CONFIG_ETH3ADDR 1875 c68a05feSrichardretanubun CONFIG_ETH4ADDR 1876 c68a05feSrichardretanubun CONFIG_ETH5ADDR 1877 c609719bSwdenk 1878 11ccc33fSMarcel Ziswiler Define a default value for Ethernet address to use 1879 11ccc33fSMarcel Ziswiler for the respective Ethernet interface, in case this 1880 c609719bSwdenk is not determined automatically. 1881 c609719bSwdenk 1882 c609719bSwdenk- IP address: 1883 c609719bSwdenk CONFIG_IPADDR 1884 c609719bSwdenk 1885 c609719bSwdenk Define a default value for the IP address to use for 1886 11ccc33fSMarcel Ziswiler the default Ethernet interface, in case this is not 1887 c609719bSwdenk determined through e.g. bootp. 1888 1ebcd654SWolfgang Denk (Environment variable "ipaddr") 1889 c609719bSwdenk 1890 c609719bSwdenk- Server IP address: 1891 c609719bSwdenk CONFIG_SERVERIP 1892 c609719bSwdenk 1893 c609719bSwdenk Defines a default value for the IP address of a TFTP 1894 c609719bSwdenk server to contact when using the "tftboot" command. 1895 1ebcd654SWolfgang Denk (Environment variable "serverip") 1896 c609719bSwdenk 1897 97cfe861SRobin Getz CONFIG_KEEP_SERVERADDR 1898 97cfe861SRobin Getz 1899 97cfe861SRobin Getz Keeps the server's MAC address, in the env 'serveraddr' 1900 97cfe861SRobin Getz for passing to bootargs (like Linux's netconsole option) 1901 97cfe861SRobin Getz 1902 1ebcd654SWolfgang Denk- Gateway IP address: 1903 1ebcd654SWolfgang Denk CONFIG_GATEWAYIP 1904 1ebcd654SWolfgang Denk 1905 1ebcd654SWolfgang Denk Defines a default value for the IP address of the 1906 1ebcd654SWolfgang Denk default router where packets to other networks are 1907 1ebcd654SWolfgang Denk sent to. 1908 1ebcd654SWolfgang Denk (Environment variable "gatewayip") 1909 1ebcd654SWolfgang Denk 1910 1ebcd654SWolfgang Denk- Subnet mask: 1911 1ebcd654SWolfgang Denk CONFIG_NETMASK 1912 1ebcd654SWolfgang Denk 1913 1ebcd654SWolfgang Denk Defines a default value for the subnet mask (or 1914 1ebcd654SWolfgang Denk routing prefix) which is used to determine if an IP 1915 1ebcd654SWolfgang Denk address belongs to the local subnet or needs to be 1916 1ebcd654SWolfgang Denk forwarded through a router. 1917 1ebcd654SWolfgang Denk (Environment variable "netmask") 1918 1ebcd654SWolfgang Denk 1919 53a5c424SDavid Updegraff- Multicast TFTP Mode: 1920 53a5c424SDavid Updegraff CONFIG_MCAST_TFTP 1921 53a5c424SDavid Updegraff 1922 53a5c424SDavid Updegraff Defines whether you want to support multicast TFTP as per 1923 53a5c424SDavid Updegraff rfc-2090; for example to work with atftp. Lets lots of targets 1924 11ccc33fSMarcel Ziswiler tftp down the same boot image concurrently. Note: the Ethernet 1925 53a5c424SDavid Updegraff driver in use must provide a function: mcast() to join/leave a 1926 53a5c424SDavid Updegraff multicast group. 1927 53a5c424SDavid Updegraff 1928 c609719bSwdenk- BOOTP Recovery Mode: 1929 c609719bSwdenk CONFIG_BOOTP_RANDOM_DELAY 1930 c609719bSwdenk 1931 c609719bSwdenk If you have many targets in a network that try to 1932 c609719bSwdenk boot using BOOTP, you may want to avoid that all 1933 c609719bSwdenk systems send out BOOTP requests at precisely the same 1934 c609719bSwdenk moment (which would happen for instance at recovery 1935 c609719bSwdenk from a power failure, when all systems will try to 1936 c609719bSwdenk boot, thus flooding the BOOTP server. Defining 1937 c609719bSwdenk CONFIG_BOOTP_RANDOM_DELAY causes a random delay to be 1938 c609719bSwdenk inserted before sending out BOOTP requests. The 1939 6c33c785SWolfgang Denk following delays are inserted then: 1940 c609719bSwdenk 1941 c609719bSwdenk 1st BOOTP request: delay 0 ... 1 sec 1942 c609719bSwdenk 2nd BOOTP request: delay 0 ... 2 sec 1943 c609719bSwdenk 3rd BOOTP request: delay 0 ... 4 sec 1944 c609719bSwdenk 4th and following 1945 c609719bSwdenk BOOTP requests: delay 0 ... 8 sec 1946 c609719bSwdenk 1947 fe389a82Sstroese- DHCP Advanced Options: 1948 1fe80d79SJon Loeliger You can fine tune the DHCP functionality by defining 1949 1fe80d79SJon Loeliger CONFIG_BOOTP_* symbols: 1950 fe389a82Sstroese 1951 1fe80d79SJon Loeliger CONFIG_BOOTP_SUBNETMASK 1952 1fe80d79SJon Loeliger CONFIG_BOOTP_GATEWAY 1953 1fe80d79SJon Loeliger CONFIG_BOOTP_HOSTNAME 1954 1fe80d79SJon Loeliger CONFIG_BOOTP_NISDOMAIN 1955 1fe80d79SJon Loeliger CONFIG_BOOTP_BOOTPATH 1956 1fe80d79SJon Loeliger CONFIG_BOOTP_BOOTFILESIZE 1957 1fe80d79SJon Loeliger CONFIG_BOOTP_DNS 1958 1fe80d79SJon Loeliger CONFIG_BOOTP_DNS2 1959 1fe80d79SJon Loeliger CONFIG_BOOTP_SEND_HOSTNAME 1960 1fe80d79SJon Loeliger CONFIG_BOOTP_NTPSERVER 1961 1fe80d79SJon Loeliger CONFIG_BOOTP_TIMEOFFSET 1962 1fe80d79SJon Loeliger CONFIG_BOOTP_VENDOREX 1963 2c00e099SJoe Hershberger CONFIG_BOOTP_MAY_FAIL 1964 fe389a82Sstroese 1965 5d110f0aSWilson Callan CONFIG_BOOTP_SERVERIP - TFTP server will be the serverip 1966 5d110f0aSWilson Callan environment variable, not the BOOTP server. 1967 fe389a82Sstroese 1968 2c00e099SJoe Hershberger CONFIG_BOOTP_MAY_FAIL - If the DHCP server is not found 1969 2c00e099SJoe Hershberger after the configured retry count, the call will fail 1970 2c00e099SJoe Hershberger instead of starting over. This can be used to fail over 1971 2c00e099SJoe Hershberger to Link-local IP address configuration if the DHCP server 1972 2c00e099SJoe Hershberger is not available. 1973 2c00e099SJoe Hershberger 1974 fe389a82Sstroese CONFIG_BOOTP_DNS2 - If a DHCP client requests the DNS 1975 fe389a82Sstroese serverip from a DHCP server, it is possible that more 1976 fe389a82Sstroese than one DNS serverip is offered to the client. 1977 fe389a82Sstroese If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS 1978 fe389a82Sstroese serverip will be stored in the additional environment 1979 fe389a82Sstroese variable "dnsip2". The first DNS serverip is always 1980 fe389a82Sstroese stored in the variable "dnsip", when CONFIG_BOOTP_DNS 1981 1fe80d79SJon Loeliger is defined. 1982 fe389a82Sstroese 1983 fe389a82Sstroese CONFIG_BOOTP_SEND_HOSTNAME - Some DHCP servers are capable 1984 fe389a82Sstroese to do a dynamic update of a DNS server. To do this, they 1985 fe389a82Sstroese need the hostname of the DHCP requester. 1986 5d110f0aSWilson Callan If CONFIG_BOOTP_SEND_HOSTNAME is defined, the content 1987 1fe80d79SJon Loeliger of the "hostname" environment variable is passed as 1988 1fe80d79SJon Loeliger option 12 to the DHCP server. 1989 fe389a82Sstroese 1990 d9a2f416SAras Vaichas CONFIG_BOOTP_DHCP_REQUEST_DELAY 1991 d9a2f416SAras Vaichas 1992 d9a2f416SAras Vaichas A 32bit value in microseconds for a delay between 1993 d9a2f416SAras Vaichas receiving a "DHCP Offer" and sending the "DHCP Request". 1994 d9a2f416SAras Vaichas This fixes a problem with certain DHCP servers that don't 1995 d9a2f416SAras Vaichas respond 100% of the time to a "DHCP request". E.g. On an 1996 d9a2f416SAras Vaichas AT91RM9200 processor running at 180MHz, this delay needed 1997 d9a2f416SAras Vaichas to be *at least* 15,000 usec before a Windows Server 2003 1998 d9a2f416SAras Vaichas DHCP server would reply 100% of the time. I recommend at 1999 d9a2f416SAras Vaichas least 50,000 usec to be safe. The alternative is to hope 2000 d9a2f416SAras Vaichas that one of the retries will be successful but note that 2001 d9a2f416SAras Vaichas the DHCP timeout and retry process takes a longer than 2002 d9a2f416SAras Vaichas this delay. 2003 d9a2f416SAras Vaichas 2004 d22c338eSJoe Hershberger - Link-local IP address negotiation: 2005 d22c338eSJoe Hershberger Negotiate with other link-local clients on the local network 2006 d22c338eSJoe Hershberger for an address that doesn't require explicit configuration. 2007 d22c338eSJoe Hershberger This is especially useful if a DHCP server cannot be guaranteed 2008 d22c338eSJoe Hershberger to exist in all environments that the device must operate. 2009 d22c338eSJoe Hershberger 2010 d22c338eSJoe Hershberger See doc/README.link-local for more information. 2011 d22c338eSJoe Hershberger 2012 a3d991bdSwdenk - CDP Options: 2013 a3d991bdSwdenk CONFIG_CDP_DEVICE_ID 2014 a3d991bdSwdenk 2015 a3d991bdSwdenk The device id used in CDP trigger frames. 2016 a3d991bdSwdenk 2017 a3d991bdSwdenk CONFIG_CDP_DEVICE_ID_PREFIX 2018 a3d991bdSwdenk 2019 a3d991bdSwdenk A two character string which is prefixed to the MAC address 2020 a3d991bdSwdenk of the device. 2021 a3d991bdSwdenk 2022 a3d991bdSwdenk CONFIG_CDP_PORT_ID 2023 a3d991bdSwdenk 2024 a3d991bdSwdenk A printf format string which contains the ascii name of 2025 a3d991bdSwdenk the port. Normally is set to "eth%d" which sets 2026 11ccc33fSMarcel Ziswiler eth0 for the first Ethernet, eth1 for the second etc. 2027 a3d991bdSwdenk 2028 a3d991bdSwdenk CONFIG_CDP_CAPABILITIES 2029 a3d991bdSwdenk 2030 a3d991bdSwdenk A 32bit integer which indicates the device capabilities; 2031 a3d991bdSwdenk 0x00000010 for a normal host which does not forwards. 2032 a3d991bdSwdenk 2033 a3d991bdSwdenk CONFIG_CDP_VERSION 2034 a3d991bdSwdenk 2035 a3d991bdSwdenk An ascii string containing the version of the software. 2036 a3d991bdSwdenk 2037 a3d991bdSwdenk CONFIG_CDP_PLATFORM 2038 a3d991bdSwdenk 2039 a3d991bdSwdenk An ascii string containing the name of the platform. 2040 a3d991bdSwdenk 2041 a3d991bdSwdenk CONFIG_CDP_TRIGGER 2042 a3d991bdSwdenk 2043 a3d991bdSwdenk A 32bit integer sent on the trigger. 2044 a3d991bdSwdenk 2045 a3d991bdSwdenk CONFIG_CDP_POWER_CONSUMPTION 2046 a3d991bdSwdenk 2047 a3d991bdSwdenk A 16bit integer containing the power consumption of the 2048 a3d991bdSwdenk device in .1 of milliwatts. 2049 a3d991bdSwdenk 2050 a3d991bdSwdenk CONFIG_CDP_APPLIANCE_VLAN_TYPE 2051 a3d991bdSwdenk 2052 a3d991bdSwdenk A byte containing the id of the VLAN. 2053 a3d991bdSwdenk 2054 c609719bSwdenk- Status LED: CONFIG_STATUS_LED 2055 c609719bSwdenk 2056 c609719bSwdenk Several configurations allow to display the current 2057 c609719bSwdenk status using a LED. For instance, the LED will blink 2058 c609719bSwdenk fast while running U-Boot code, stop blinking as 2059 c609719bSwdenk soon as a reply to a BOOTP request was received, and 2060 c609719bSwdenk start blinking slow once the Linux kernel is running 2061 c609719bSwdenk (supported by a status LED driver in the Linux 2062 c609719bSwdenk kernel). Defining CONFIG_STATUS_LED enables this 2063 c609719bSwdenk feature in U-Boot. 2064 c609719bSwdenk 2065 1df7bbbaSIgor Grinberg Additional options: 2066 1df7bbbaSIgor Grinberg 2067 1df7bbbaSIgor Grinberg CONFIG_GPIO_LED 2068 1df7bbbaSIgor Grinberg The status LED can be connected to a GPIO pin. 2069 1df7bbbaSIgor Grinberg In such cases, the gpio_led driver can be used as a 2070 1df7bbbaSIgor Grinberg status LED backend implementation. Define CONFIG_GPIO_LED 2071 1df7bbbaSIgor Grinberg to include the gpio_led driver in the U-Boot binary. 2072 1df7bbbaSIgor Grinberg 2073 9dfdcdfeSIgor Grinberg CONFIG_GPIO_LED_INVERTED_TABLE 2074 9dfdcdfeSIgor Grinberg Some GPIO connected LEDs may have inverted polarity in which 2075 9dfdcdfeSIgor Grinberg case the GPIO high value corresponds to LED off state and 2076 9dfdcdfeSIgor Grinberg GPIO low value corresponds to LED on state. 2077 9dfdcdfeSIgor Grinberg In such cases CONFIG_GPIO_LED_INVERTED_TABLE may be defined 2078 9dfdcdfeSIgor Grinberg with a list of GPIO LEDs that have inverted polarity. 2079 9dfdcdfeSIgor Grinberg 2080 c609719bSwdenk- CAN Support: CONFIG_CAN_DRIVER 2081 c609719bSwdenk 2082 c609719bSwdenk Defining CONFIG_CAN_DRIVER enables CAN driver support 2083 c609719bSwdenk on those systems that support this (optional) 2084 c609719bSwdenk feature, like the TQM8xxL modules. 2085 c609719bSwdenk 2086 3f4978c7SHeiko Schocher- I2C Support: CONFIG_SYS_I2C 2087 c609719bSwdenk 2088 3f4978c7SHeiko Schocher This enable the NEW i2c subsystem, and will allow you to use 2089 3f4978c7SHeiko Schocher i2c commands at the u-boot command line (as long as you set 2090 3f4978c7SHeiko Schocher CONFIG_CMD_I2C in CONFIG_COMMANDS) and communicate with i2c 2091 3f4978c7SHeiko Schocher based realtime clock chips or other i2c devices. See 2092 3f4978c7SHeiko Schocher common/cmd_i2c.c for a description of the command line 2093 3f4978c7SHeiko Schocher interface. 2094 3f4978c7SHeiko Schocher 2095 3f4978c7SHeiko Schocher ported i2c driver to the new framework: 2096 ea818dbbSHeiko Schocher - drivers/i2c/soft_i2c.c: 2097 ea818dbbSHeiko Schocher - activate first bus with CONFIG_SYS_I2C_SOFT define 2098 ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED and CONFIG_SYS_I2C_SOFT_SLAVE 2099 ea818dbbSHeiko Schocher for defining speed and slave address 2100 ea818dbbSHeiko Schocher - activate second bus with I2C_SOFT_DECLARATIONS2 define 2101 ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_2 and CONFIG_SYS_I2C_SOFT_SLAVE_2 2102 ea818dbbSHeiko Schocher for defining speed and slave address 2103 ea818dbbSHeiko Schocher - activate third bus with I2C_SOFT_DECLARATIONS3 define 2104 ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_3 and CONFIG_SYS_I2C_SOFT_SLAVE_3 2105 ea818dbbSHeiko Schocher for defining speed and slave address 2106 ea818dbbSHeiko Schocher - activate fourth bus with I2C_SOFT_DECLARATIONS4 define 2107 ea818dbbSHeiko Schocher CONFIG_SYS_I2C_SOFT_SPEED_4 and CONFIG_SYS_I2C_SOFT_SLAVE_4 2108 ea818dbbSHeiko Schocher for defining speed and slave address 2109 3f4978c7SHeiko Schocher 2110 00f792e0SHeiko Schocher - drivers/i2c/fsl_i2c.c: 2111 00f792e0SHeiko Schocher - activate i2c driver with CONFIG_SYS_I2C_FSL 2112 00f792e0SHeiko Schocher define CONFIG_SYS_FSL_I2C_OFFSET for setting the register 2113 00f792e0SHeiko Schocher offset CONFIG_SYS_FSL_I2C_SPEED for the i2c speed and 2114 00f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C_SLAVE for the slave addr of the first 2115 00f792e0SHeiko Schocher bus. 2116 00f792e0SHeiko Schocher - If your board supports a second fsl i2c bus, define 2117 00f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_OFFSET for the register offset 2118 00f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_SPEED for the speed and 2119 00f792e0SHeiko Schocher CONFIG_SYS_FSL_I2C2_SLAVE for the slave address of the 2120 00f792e0SHeiko Schocher second bus. 2121 00f792e0SHeiko Schocher 2122 1f2ba722SSimon Glass - drivers/i2c/tegra_i2c.c: 2123 1f2ba722SSimon Glass - activate this driver with CONFIG_SYS_I2C_TEGRA 2124 1f2ba722SSimon Glass - This driver adds 4 i2c buses with a fix speed from 2125 1f2ba722SSimon Glass 100000 and the slave addr 0! 2126 1f2ba722SSimon Glass 2127 880540deSDirk Eibach - drivers/i2c/ppc4xx_i2c.c 2128 880540deSDirk Eibach - activate this driver with CONFIG_SYS_I2C_PPC4XX 2129 880540deSDirk Eibach - CONFIG_SYS_I2C_PPC4XX_CH0 activate hardware channel 0 2130 880540deSDirk Eibach - CONFIG_SYS_I2C_PPC4XX_CH1 activate hardware channel 1 2131 880540deSDirk Eibach 2132 fac96408Strem - drivers/i2c/i2c_mxc.c 2133 fac96408Strem - activate this driver with CONFIG_SYS_I2C_MXC 2134 fac96408Strem - define speed for bus 1 with CONFIG_SYS_MXC_I2C1_SPEED 2135 fac96408Strem - define slave for bus 1 with CONFIG_SYS_MXC_I2C1_SLAVE 2136 fac96408Strem - define speed for bus 2 with CONFIG_SYS_MXC_I2C2_SPEED 2137 fac96408Strem - define slave for bus 2 with CONFIG_SYS_MXC_I2C2_SLAVE 2138 fac96408Strem - define speed for bus 3 with CONFIG_SYS_MXC_I2C3_SPEED 2139 fac96408Strem - define slave for bus 3 with CONFIG_SYS_MXC_I2C3_SLAVE 2140 fac96408Strem If thoses defines are not set, default value is 100000 2141 fac96408Strem for speed, and 0 for slave. 2142 fac96408Strem 2143 1086bfa9SNobuhiro Iwamatsu - drivers/i2c/rcar_i2c.c: 2144 1086bfa9SNobuhiro Iwamatsu - activate this driver with CONFIG_SYS_I2C_RCAR 2145 1086bfa9SNobuhiro Iwamatsu - This driver adds 4 i2c buses 2146 1086bfa9SNobuhiro Iwamatsu 2147 1086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C0_BASE for setting the register channel 0 2148 1086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C0_SPEED for for the speed channel 0 2149 1086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C1_BASE for setting the register channel 1 2150 1086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C1_SPEED for for the speed channel 1 2151 1086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C2_BASE for setting the register channel 2 2152 1086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C2_SPEED for for the speed channel 2 2153 1086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C3_BASE for setting the register channel 3 2154 1086bfa9SNobuhiro Iwamatsu - CONFIG_SYS_RCAR_I2C3_SPEED for for the speed channel 3 2155 1086bfa9SNobuhiro Iwamatsu - CONFIF_SYS_RCAR_I2C_NUM_CONTROLLERS for number of i2c buses 2156 1086bfa9SNobuhiro Iwamatsu 2157 2035d77dSNobuhiro Iwamatsu - drivers/i2c/sh_i2c.c: 2158 2035d77dSNobuhiro Iwamatsu - activate this driver with CONFIG_SYS_I2C_SH 2159 2035d77dSNobuhiro Iwamatsu - This driver adds from 2 to 5 i2c buses 2160 2035d77dSNobuhiro Iwamatsu 2161 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE0 for setting the register channel 0 2162 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED0 for for the speed channel 0 2163 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE1 for setting the register channel 1 2164 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED1 for for the speed channel 1 2165 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE2 for setting the register channel 2 2166 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED2 for for the speed channel 2 2167 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE3 for setting the register channel 3 2168 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED3 for for the speed channel 3 2169 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE4 for setting the register channel 4 2170 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED4 for for the speed channel 4 2171 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_BASE5 for setting the register channel 5 2172 2035d77dSNobuhiro Iwamatsu - CONFIG_SYS_I2C_SH_SPEED5 for for the speed channel 5 2173 2035d77dSNobuhiro Iwamatsu - CONFIF_SYS_I2C_SH_NUM_CONTROLLERS for nummber of i2c buses 2174 2035d77dSNobuhiro Iwamatsu 2175 6789e84eSHeiko Schocher - drivers/i2c/omap24xx_i2c.c 2176 6789e84eSHeiko Schocher - activate this driver with CONFIG_SYS_I2C_OMAP24XX 2177 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED speed channel 0 2178 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE slave addr channel 0 2179 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED1 speed channel 1 2180 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE1 slave addr channel 1 2181 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED2 speed channel 2 2182 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE2 slave addr channel 2 2183 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED3 speed channel 3 2184 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE3 slave addr channel 3 2185 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SPEED4 speed channel 4 2186 6789e84eSHeiko Schocher - CONFIG_SYS_OMAP24_I2C_SLAVE4 slave addr channel 4 2187 6789e84eSHeiko Schocher 2188 0bdffe71SHeiko Schocher - drivers/i2c/zynq_i2c.c 2189 0bdffe71SHeiko Schocher - activate this driver with CONFIG_SYS_I2C_ZYNQ 2190 0bdffe71SHeiko Schocher - set CONFIG_SYS_I2C_ZYNQ_SPEED for speed setting 2191 0bdffe71SHeiko Schocher - set CONFIG_SYS_I2C_ZYNQ_SLAVE for slave addr 2192 0bdffe71SHeiko Schocher 2193 e717fc6dSNaveen Krishna Ch - drivers/i2c/s3c24x0_i2c.c: 2194 e717fc6dSNaveen Krishna Ch - activate this driver with CONFIG_SYS_I2C_S3C24X0 2195 e717fc6dSNaveen Krishna Ch - This driver adds i2c buses (11 for Exynos5250, Exynos5420 2196 e717fc6dSNaveen Krishna Ch 9 i2c buses for Exynos4 and 1 for S3C24X0 SoCs from Samsung) 2197 e717fc6dSNaveen Krishna Ch with a fix speed from 100000 and the slave addr 0! 2198 e717fc6dSNaveen Krishna Ch 2199 3f4978c7SHeiko Schocher additional defines: 2200 3f4978c7SHeiko Schocher 2201 3f4978c7SHeiko Schocher CONFIG_SYS_NUM_I2C_BUSES 2202 3f4978c7SHeiko Schocher Hold the number of i2c busses you want to use. If you 2203 3f4978c7SHeiko Schocher don't use/have i2c muxes on your i2c bus, this 2204 3f4978c7SHeiko Schocher is equal to CONFIG_SYS_NUM_I2C_ADAPTERS, and you can 2205 3f4978c7SHeiko Schocher omit this define. 2206 3f4978c7SHeiko Schocher 2207 3f4978c7SHeiko Schocher CONFIG_SYS_I2C_DIRECT_BUS 2208 3f4978c7SHeiko Schocher define this, if you don't use i2c muxes on your hardware. 2209 3f4978c7SHeiko Schocher if CONFIG_SYS_I2C_MAX_HOPS is not defined or == 0 you can 2210 3f4978c7SHeiko Schocher omit this define. 2211 3f4978c7SHeiko Schocher 2212 3f4978c7SHeiko Schocher CONFIG_SYS_I2C_MAX_HOPS 2213 3f4978c7SHeiko Schocher define how many muxes are maximal consecutively connected 2214 3f4978c7SHeiko Schocher on one i2c bus. If you not use i2c muxes, omit this 2215 3f4978c7SHeiko Schocher define. 2216 3f4978c7SHeiko Schocher 2217 3f4978c7SHeiko Schocher CONFIG_SYS_I2C_BUSES 2218 3f4978c7SHeiko Schocher hold a list of busses you want to use, only used if 2219 3f4978c7SHeiko Schocher CONFIG_SYS_I2C_DIRECT_BUS is not defined, for example 2220 3f4978c7SHeiko Schocher a board with CONFIG_SYS_I2C_MAX_HOPS = 1 and 2221 3f4978c7SHeiko Schocher CONFIG_SYS_NUM_I2C_BUSES = 9: 2222 3f4978c7SHeiko Schocher 2223 3f4978c7SHeiko Schocher CONFIG_SYS_I2C_BUSES {{0, {I2C_NULL_HOP}}, \ 2224 3f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 1}}}, \ 2225 3f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 2}}}, \ 2226 3f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 3}}}, \ 2227 3f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 4}}}, \ 2228 3f4978c7SHeiko Schocher {0, {{I2C_MUX_PCA9547, 0x70, 5}}}, \ 2229 3f4978c7SHeiko Schocher {1, {I2C_NULL_HOP}}, \ 2230 3f4978c7SHeiko Schocher {1, {{I2C_MUX_PCA9544, 0x72, 1}}}, \ 2231 3f4978c7SHeiko Schocher {1, {{I2C_MUX_PCA9544, 0x72, 2}}}, \ 2232 3f4978c7SHeiko Schocher } 2233 3f4978c7SHeiko Schocher 2234 3f4978c7SHeiko Schocher which defines 2235 3f4978c7SHeiko Schocher bus 0 on adapter 0 without a mux 2236 ea818dbbSHeiko Schocher bus 1 on adapter 0 with a PCA9547 on address 0x70 port 1 2237 ea818dbbSHeiko Schocher bus 2 on adapter 0 with a PCA9547 on address 0x70 port 2 2238 ea818dbbSHeiko Schocher bus 3 on adapter 0 with a PCA9547 on address 0x70 port 3 2239 ea818dbbSHeiko Schocher bus 4 on adapter 0 with a PCA9547 on address 0x70 port 4 2240 ea818dbbSHeiko Schocher bus 5 on adapter 0 with a PCA9547 on address 0x70 port 5 2241 3f4978c7SHeiko Schocher bus 6 on adapter 1 without a mux 2242 ea818dbbSHeiko Schocher bus 7 on adapter 1 with a PCA9544 on address 0x72 port 1 2243 ea818dbbSHeiko Schocher bus 8 on adapter 1 with a PCA9544 on address 0x72 port 2 2244 3f4978c7SHeiko Schocher 2245 3f4978c7SHeiko Schocher If you do not have i2c muxes on your board, omit this define. 2246 3f4978c7SHeiko Schocher 2247 ea818dbbSHeiko Schocher- Legacy I2C Support: CONFIG_HARD_I2C 2248 3f4978c7SHeiko Schocher 2249 3f4978c7SHeiko Schocher NOTE: It is intended to move drivers to CONFIG_SYS_I2C which 2250 3f4978c7SHeiko Schocher provides the following compelling advantages: 2251 3f4978c7SHeiko Schocher 2252 3f4978c7SHeiko Schocher - more than one i2c adapter is usable 2253 3f4978c7SHeiko Schocher - approved multibus support 2254 3f4978c7SHeiko Schocher - better i2c mux support 2255 3f4978c7SHeiko Schocher 2256 3f4978c7SHeiko Schocher ** Please consider updating your I2C driver now. ** 2257 3f4978c7SHeiko Schocher 2258 ea818dbbSHeiko Schocher These enable legacy I2C serial bus commands. Defining 2259 ea818dbbSHeiko Schocher CONFIG_HARD_I2C will include the appropriate I2C driver 2260 ea818dbbSHeiko Schocher for the selected CPU. 2261 c609719bSwdenk 2262 b37c7e5eSwdenk This will allow you to use i2c commands at the u-boot 2263 602ad3b3SJon Loeliger command line (as long as you set CONFIG_CMD_I2C in 2264 b37c7e5eSwdenk CONFIG_COMMANDS) and communicate with i2c based realtime 2265 b37c7e5eSwdenk clock chips. See common/cmd_i2c.c for a description of the 2266 c609719bSwdenk command line interface. 2267 c609719bSwdenk 2268 bb99ad6dSBen Warren CONFIG_HARD_I2C selects a hardware I2C controller. 2269 c609719bSwdenk 2270 b37c7e5eSwdenk There are several other quantities that must also be 2271 ea818dbbSHeiko Schocher defined when you define CONFIG_HARD_I2C. 2272 c609719bSwdenk 2273 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD In both cases you will need to define CONFIG_SYS_I2C_SPEED 2274 b37c7e5eSwdenk to be the frequency (in Hz) at which you wish your i2c bus 2275 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD to run and CONFIG_SYS_I2C_SLAVE to be the address of this node (ie 2276 11ccc33fSMarcel Ziswiler the CPU's i2c node address). 2277 c609719bSwdenk 2278 8d321b81SPeter Tyser Now, the u-boot i2c code for the mpc8xx 2279 a47a12beSStefan Roese (arch/powerpc/cpu/mpc8xx/i2c.c) sets the CPU up as a master node 2280 8d321b81SPeter Tyser and so its address should therefore be cleared to 0 (See, 2281 8d321b81SPeter Tyser eg, MPC823e User's Manual p.16-473). So, set 2282 8d321b81SPeter Tyser CONFIG_SYS_I2C_SLAVE to 0. 2283 b37c7e5eSwdenk 2284 5da71efaSEric Millbrandt CONFIG_SYS_I2C_INIT_MPC5XXX 2285 5da71efaSEric Millbrandt 2286 5da71efaSEric Millbrandt When a board is reset during an i2c bus transfer 2287 5da71efaSEric Millbrandt chips might think that the current transfer is still 2288 5da71efaSEric Millbrandt in progress. Reset the slave devices by sending start 2289 5da71efaSEric Millbrandt commands until the slave device responds. 2290 5da71efaSEric Millbrandt 2291 b37c7e5eSwdenk That's all that's required for CONFIG_HARD_I2C. 2292 b37c7e5eSwdenk 2293 ea818dbbSHeiko Schocher If you use the software i2c interface (CONFIG_SYS_I2C_SOFT) 2294 b37c7e5eSwdenk then the following macros need to be defined (examples are 2295 b37c7e5eSwdenk from include/configs/lwmon.h): 2296 c609719bSwdenk 2297 c609719bSwdenk I2C_INIT 2298 c609719bSwdenk 2299 b37c7e5eSwdenk (Optional). Any commands necessary to enable the I2C 2300 c609719bSwdenk controller or configure ports. 2301 c609719bSwdenk 2302 b37c7e5eSwdenk eg: #define I2C_INIT (immr->im_cpm.cp_pbdir |= PB_SCL) 2303 b37c7e5eSwdenk 2304 c609719bSwdenk I2C_PORT 2305 c609719bSwdenk 2306 c609719bSwdenk (Only for MPC8260 CPU). The I/O port to use (the code 2307 c609719bSwdenk assumes both bits are on the same port). Valid values 2308 c609719bSwdenk are 0..3 for ports A..D. 2309 c609719bSwdenk 2310 c609719bSwdenk I2C_ACTIVE 2311 c609719bSwdenk 2312 c609719bSwdenk The code necessary to make the I2C data line active 2313 c609719bSwdenk (driven). If the data line is open collector, this 2314 c609719bSwdenk define can be null. 2315 c609719bSwdenk 2316 b37c7e5eSwdenk eg: #define I2C_ACTIVE (immr->im_cpm.cp_pbdir |= PB_SDA) 2317 b37c7e5eSwdenk 2318 c609719bSwdenk I2C_TRISTATE 2319 c609719bSwdenk 2320 c609719bSwdenk The code necessary to make the I2C data line tri-stated 2321 c609719bSwdenk (inactive). If the data line is open collector, this 2322 c609719bSwdenk define can be null. 2323 c609719bSwdenk 2324 b37c7e5eSwdenk eg: #define I2C_TRISTATE (immr->im_cpm.cp_pbdir &= ~PB_SDA) 2325 b37c7e5eSwdenk 2326 c609719bSwdenk I2C_READ 2327 c609719bSwdenk 2328 472d5460SYork Sun Code that returns true if the I2C data line is high, 2329 472d5460SYork Sun false if it is low. 2330 c609719bSwdenk 2331 b37c7e5eSwdenk eg: #define I2C_READ ((immr->im_cpm.cp_pbdat & PB_SDA) != 0) 2332 b37c7e5eSwdenk 2333 c609719bSwdenk I2C_SDA(bit) 2334 c609719bSwdenk 2335 472d5460SYork Sun If <bit> is true, sets the I2C data line high. If it 2336 472d5460SYork Sun is false, it clears it (low). 2337 c609719bSwdenk 2338 b37c7e5eSwdenk eg: #define I2C_SDA(bit) \ 2339 b37c7e5eSwdenk if(bit) immr->im_cpm.cp_pbdat |= PB_SDA; \ 2340 b37c7e5eSwdenk else immr->im_cpm.cp_pbdat &= ~PB_SDA 2341 b37c7e5eSwdenk 2342 c609719bSwdenk I2C_SCL(bit) 2343 c609719bSwdenk 2344 472d5460SYork Sun If <bit> is true, sets the I2C clock line high. If it 2345 472d5460SYork Sun is false, it clears it (low). 2346 c609719bSwdenk 2347 b37c7e5eSwdenk eg: #define I2C_SCL(bit) \ 2348 b37c7e5eSwdenk if(bit) immr->im_cpm.cp_pbdat |= PB_SCL; \ 2349 b37c7e5eSwdenk else immr->im_cpm.cp_pbdat &= ~PB_SCL 2350 b37c7e5eSwdenk 2351 c609719bSwdenk I2C_DELAY 2352 c609719bSwdenk 2353 c609719bSwdenk This delay is invoked four times per clock cycle so this 2354 c609719bSwdenk controls the rate of data transfer. The data rate thus 2355 b37c7e5eSwdenk is 1 / (I2C_DELAY * 4). Often defined to be something 2356 b37c7e5eSwdenk like: 2357 b37c7e5eSwdenk 2358 b37c7e5eSwdenk #define I2C_DELAY udelay(2) 2359 c609719bSwdenk 2360 793b5726SMike Frysinger CONFIG_SOFT_I2C_GPIO_SCL / CONFIG_SOFT_I2C_GPIO_SDA 2361 793b5726SMike Frysinger 2362 793b5726SMike Frysinger If your arch supports the generic GPIO framework (asm/gpio.h), 2363 793b5726SMike Frysinger then you may alternatively define the two GPIOs that are to be 2364 793b5726SMike Frysinger used as SCL / SDA. Any of the previous I2C_xxx macros will 2365 793b5726SMike Frysinger have GPIO-based defaults assigned to them as appropriate. 2366 793b5726SMike Frysinger 2367 793b5726SMike Frysinger You should define these to the GPIO value as given directly to 2368 793b5726SMike Frysinger the generic GPIO functions. 2369 793b5726SMike Frysinger 2370 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_INIT_BOARD 2371 47cd00faSwdenk 2372 47cd00faSwdenk When a board is reset during an i2c bus transfer 2373 47cd00faSwdenk chips might think that the current transfer is still 2374 47cd00faSwdenk in progress. On some boards it is possible to access 2375 47cd00faSwdenk the i2c SCLK line directly, either by using the 2376 47cd00faSwdenk processor pin as a GPIO or by having a second pin 2377 47cd00faSwdenk connected to the bus. If this option is defined a 2378 47cd00faSwdenk custom i2c_init_board() routine in boards/xxx/board.c 2379 47cd00faSwdenk is run early in the boot sequence. 2380 47cd00faSwdenk 2381 26a33504SRichard Retanubun CONFIG_SYS_I2C_BOARD_LATE_INIT 2382 26a33504SRichard Retanubun 2383 26a33504SRichard Retanubun An alternative to CONFIG_SYS_I2C_INIT_BOARD. If this option is 2384 26a33504SRichard Retanubun defined a custom i2c_board_late_init() routine in 2385 26a33504SRichard Retanubun boards/xxx/board.c is run AFTER the operations in i2c_init() 2386 26a33504SRichard Retanubun is completed. This callpoint can be used to unreset i2c bus 2387 26a33504SRichard Retanubun using CPU i2c controller register accesses for CPUs whose i2c 2388 26a33504SRichard Retanubun controller provide such a method. It is called at the end of 2389 26a33504SRichard Retanubun i2c_init() to allow i2c_init operations to setup the i2c bus 2390 26a33504SRichard Retanubun controller on the CPU (e.g. setting bus speed & slave address). 2391 26a33504SRichard Retanubun 2392 17ea1177Swdenk CONFIG_I2CFAST (PPC405GP|PPC405EP only) 2393 17ea1177Swdenk 2394 17ea1177Swdenk This option enables configuration of bi_iic_fast[] flags 2395 17ea1177Swdenk in u-boot bd_info structure based on u-boot environment 2396 17ea1177Swdenk variable "i2cfast". (see also i2cfast) 2397 17ea1177Swdenk 2398 bb99ad6dSBen Warren CONFIG_I2C_MULTI_BUS 2399 bb99ad6dSBen Warren 2400 bb99ad6dSBen Warren This option allows the use of multiple I2C buses, each of which 2401 bb99ad6dSBen Warren must have a controller. At any point in time, only one bus is 2402 bb99ad6dSBen Warren active. To switch to a different bus, use the 'i2c dev' command. 2403 bb99ad6dSBen Warren Note that bus numbering is zero-based. 2404 bb99ad6dSBen Warren 2405 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_NOPROBES 2406 bb99ad6dSBen Warren 2407 bb99ad6dSBen Warren This option specifies a list of I2C devices that will be skipped 2408 0f89c54bSPeter Tyser when the 'i2c probe' command is issued. If CONFIG_I2C_MULTI_BUS 2409 0f89c54bSPeter Tyser is set, specify a list of bus-device pairs. Otherwise, specify 2410 0f89c54bSPeter Tyser a 1D array of device addresses 2411 bb99ad6dSBen Warren 2412 bb99ad6dSBen Warren e.g. 2413 bb99ad6dSBen Warren #undef CONFIG_I2C_MULTI_BUS 2414 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_I2C_NOPROBES {0x50,0x68} 2415 bb99ad6dSBen Warren 2416 bb99ad6dSBen Warren will skip addresses 0x50 and 0x68 on a board with one I2C bus 2417 bb99ad6dSBen Warren 2418 bb99ad6dSBen Warren #define CONFIG_I2C_MULTI_BUS 2419 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_I2C_MULTI_NOPROBES {{0,0x50},{0,0x68},{1,0x54}} 2420 bb99ad6dSBen Warren 2421 bb99ad6dSBen Warren will skip addresses 0x50 and 0x68 on bus 0 and address 0x54 on bus 1 2422 bb99ad6dSBen Warren 2423 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SPD_BUS_NUM 2424 be5e6181STimur Tabi 2425 be5e6181STimur Tabi If defined, then this indicates the I2C bus number for DDR SPD. 2426 be5e6181STimur Tabi If not defined, then U-Boot assumes that SPD is on I2C bus 0. 2427 be5e6181STimur Tabi 2428 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_RTC_BUS_NUM 2429 0dc018ecSStefan Roese 2430 0dc018ecSStefan Roese If defined, then this indicates the I2C bus number for the RTC. 2431 0dc018ecSStefan Roese If not defined, then U-Boot assumes that RTC is on I2C bus 0. 2432 0dc018ecSStefan Roese 2433 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_DTT_BUS_NUM 2434 0dc018ecSStefan Roese 2435 0dc018ecSStefan Roese If defined, then this indicates the I2C bus number for the DTT. 2436 0dc018ecSStefan Roese If not defined, then U-Boot assumes that DTT is on I2C bus 0. 2437 0dc018ecSStefan Roese 2438 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_I2C_DTT_ADDR: 2439 9ebbb54fSVictor Gallardo 2440 9ebbb54fSVictor Gallardo If defined, specifies the I2C address of the DTT device. 2441 9ebbb54fSVictor Gallardo If not defined, then U-Boot uses predefined value for 2442 9ebbb54fSVictor Gallardo specified DTT device. 2443 9ebbb54fSVictor Gallardo 2444 2ac6985aSAndrew Dyer CONFIG_SOFT_I2C_READ_REPEATED_START 2445 2ac6985aSAndrew Dyer 2446 2ac6985aSAndrew Dyer defining this will force the i2c_read() function in 2447 2ac6985aSAndrew Dyer the soft_i2c driver to perform an I2C repeated start 2448 2ac6985aSAndrew Dyer between writing the address pointer and reading the 2449 2ac6985aSAndrew Dyer data. If this define is omitted the default behaviour 2450 2ac6985aSAndrew Dyer of doing a stop-start sequence will be used. Most I2C 2451 2ac6985aSAndrew Dyer devices can use either method, but some require one or 2452 2ac6985aSAndrew Dyer the other. 2453 be5e6181STimur Tabi 2454 c609719bSwdenk- SPI Support: CONFIG_SPI 2455 c609719bSwdenk 2456 c609719bSwdenk Enables SPI driver (so far only tested with 2457 c609719bSwdenk SPI EEPROM, also an instance works with Crystal A/D and 2458 c609719bSwdenk D/As on the SACSng board) 2459 c609719bSwdenk 2460 6639562eSYoshihiro Shimoda CONFIG_SH_SPI 2461 6639562eSYoshihiro Shimoda 2462 6639562eSYoshihiro Shimoda Enables the driver for SPI controller on SuperH. Currently 2463 6639562eSYoshihiro Shimoda only SH7757 is supported. 2464 6639562eSYoshihiro Shimoda 2465 c609719bSwdenk CONFIG_SPI_X 2466 c609719bSwdenk 2467 c609719bSwdenk Enables extended (16-bit) SPI EEPROM addressing. 2468 c609719bSwdenk (symmetrical to CONFIG_I2C_X) 2469 c609719bSwdenk 2470 c609719bSwdenk CONFIG_SOFT_SPI 2471 c609719bSwdenk 2472 c609719bSwdenk Enables a software (bit-bang) SPI driver rather than 2473 c609719bSwdenk using hardware support. This is a general purpose 2474 c609719bSwdenk driver that only requires three general I/O port pins 2475 c609719bSwdenk (two outputs, one input) to function. If this is 2476 c609719bSwdenk defined, the board configuration must define several 2477 c609719bSwdenk SPI configuration items (port pins to use, etc). For 2478 c609719bSwdenk an example, see include/configs/sacsng.h. 2479 c609719bSwdenk 2480 04a9e118SBen Warren CONFIG_HARD_SPI 2481 04a9e118SBen Warren 2482 04a9e118SBen Warren Enables a hardware SPI driver for general-purpose reads 2483 04a9e118SBen Warren and writes. As with CONFIG_SOFT_SPI, the board configuration 2484 04a9e118SBen Warren must define a list of chip-select function pointers. 2485 04a9e118SBen Warren Currently supported on some MPC8xxx processors. For an 2486 04a9e118SBen Warren example, see include/configs/mpc8349emds.h. 2487 04a9e118SBen Warren 2488 38254f45SGuennadi Liakhovetski CONFIG_MXC_SPI 2489 38254f45SGuennadi Liakhovetski 2490 38254f45SGuennadi Liakhovetski Enables the driver for the SPI controllers on i.MX and MXC 2491 2e3cd1cdSFabio Estevam SoCs. Currently i.MX31/35/51 are supported. 2492 38254f45SGuennadi Liakhovetski 2493 0133502eSMatthias Fuchs- FPGA Support: CONFIG_FPGA 2494 0133502eSMatthias Fuchs 2495 0133502eSMatthias Fuchs Enables FPGA subsystem. 2496 0133502eSMatthias Fuchs 2497 0133502eSMatthias Fuchs CONFIG_FPGA_<vendor> 2498 0133502eSMatthias Fuchs 2499 0133502eSMatthias Fuchs Enables support for specific chip vendors. 2500 0133502eSMatthias Fuchs (ALTERA, XILINX) 2501 0133502eSMatthias Fuchs 2502 0133502eSMatthias Fuchs CONFIG_FPGA_<family> 2503 0133502eSMatthias Fuchs 2504 0133502eSMatthias Fuchs Enables support for FPGA family. 2505 0133502eSMatthias Fuchs (SPARTAN2, SPARTAN3, VIRTEX2, CYCLONE2, ACEX1K, ACEX) 2506 0133502eSMatthias Fuchs 2507 0133502eSMatthias Fuchs CONFIG_FPGA_COUNT 2508 c609719bSwdenk 2509 c609719bSwdenk Specify the number of FPGA devices to support. 2510 c609719bSwdenk 2511 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_PROG_FEEDBACK 2512 c609719bSwdenk 2513 c609719bSwdenk Enable printing of hash marks during FPGA configuration. 2514 c609719bSwdenk 2515 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_BUSY 2516 c609719bSwdenk 2517 c609719bSwdenk Enable checks on FPGA configuration interface busy 2518 c609719bSwdenk status by the configuration function. This option 2519 c609719bSwdenk will require a board or device specific function to 2520 c609719bSwdenk be written. 2521 c609719bSwdenk 2522 c609719bSwdenk CONFIG_FPGA_DELAY 2523 c609719bSwdenk 2524 c609719bSwdenk If defined, a function that provides delays in the FPGA 2525 c609719bSwdenk configuration driver. 2526 c609719bSwdenk 2527 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_CTRLC 2528 c609719bSwdenk Allow Control-C to interrupt FPGA configuration 2529 c609719bSwdenk 2530 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_CHECK_ERROR 2531 c609719bSwdenk 2532 c609719bSwdenk Check for configuration errors during FPGA bitfile 2533 c609719bSwdenk loading. For example, abort during Virtex II 2534 c609719bSwdenk configuration if the INIT_B line goes low (which 2535 c609719bSwdenk indicated a CRC error). 2536 c609719bSwdenk 2537 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_INIT 2538 c609719bSwdenk 2539 c609719bSwdenk Maximum time to wait for the INIT_B line to deassert 2540 c609719bSwdenk after PROB_B has been deasserted during a Virtex II 2541 c609719bSwdenk FPGA configuration sequence. The default time is 500 2542 11ccc33fSMarcel Ziswiler ms. 2543 c609719bSwdenk 2544 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_BUSY 2545 c609719bSwdenk 2546 c609719bSwdenk Maximum time to wait for BUSY to deassert during 2547 11ccc33fSMarcel Ziswiler Virtex II FPGA configuration. The default is 5 ms. 2548 c609719bSwdenk 2549 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FPGA_WAIT_CONFIG 2550 c609719bSwdenk 2551 c609719bSwdenk Time to wait after FPGA configuration. The default is 2552 11ccc33fSMarcel Ziswiler 200 ms. 2553 c609719bSwdenk 2554 c609719bSwdenk- Configuration Management: 2555 c609719bSwdenk CONFIG_IDENT_STRING 2556 c609719bSwdenk 2557 c609719bSwdenk If defined, this string will be added to the U-Boot 2558 c609719bSwdenk version information (U_BOOT_VERSION) 2559 c609719bSwdenk 2560 c609719bSwdenk- Vendor Parameter Protection: 2561 c609719bSwdenk 2562 c609719bSwdenk U-Boot considers the values of the environment 2563 c609719bSwdenk variables "serial#" (Board Serial Number) and 2564 7152b1d0Swdenk "ethaddr" (Ethernet Address) to be parameters that 2565 c609719bSwdenk are set once by the board vendor / manufacturer, and 2566 c609719bSwdenk protects these variables from casual modification by 2567 c609719bSwdenk the user. Once set, these variables are read-only, 2568 c609719bSwdenk and write or delete attempts are rejected. You can 2569 11ccc33fSMarcel Ziswiler change this behaviour: 2570 c609719bSwdenk 2571 c609719bSwdenk If CONFIG_ENV_OVERWRITE is #defined in your config 2572 c609719bSwdenk file, the write protection for vendor parameters is 2573 47cd00faSwdenk completely disabled. Anybody can change or delete 2574 c609719bSwdenk these parameters. 2575 c609719bSwdenk 2576 c609719bSwdenk Alternatively, if you #define _both_ CONFIG_ETHADDR 2577 c609719bSwdenk _and_ CONFIG_OVERWRITE_ETHADDR_ONCE, a default 2578 11ccc33fSMarcel Ziswiler Ethernet address is installed in the environment, 2579 c609719bSwdenk which can be changed exactly ONCE by the user. [The 2580 c609719bSwdenk serial# is unaffected by this, i. e. it remains 2581 c609719bSwdenk read-only.] 2582 c609719bSwdenk 2583 2598090bSJoe Hershberger The same can be accomplished in a more flexible way 2584 2598090bSJoe Hershberger for any variable by configuring the type of access 2585 2598090bSJoe Hershberger to allow for those variables in the ".flags" variable 2586 2598090bSJoe Hershberger or define CONFIG_ENV_FLAGS_LIST_STATIC. 2587 2598090bSJoe Hershberger 2588 c609719bSwdenk- Protected RAM: 2589 c609719bSwdenk CONFIG_PRAM 2590 c609719bSwdenk 2591 c609719bSwdenk Define this variable to enable the reservation of 2592 c609719bSwdenk "protected RAM", i. e. RAM which is not overwritten 2593 c609719bSwdenk by U-Boot. Define CONFIG_PRAM to hold the number of 2594 c609719bSwdenk kB you want to reserve for pRAM. You can overwrite 2595 c609719bSwdenk this default value by defining an environment 2596 c609719bSwdenk variable "pram" to the number of kB you want to 2597 c609719bSwdenk reserve. Note that the board info structure will 2598 c609719bSwdenk still show the full amount of RAM. If pRAM is 2599 c609719bSwdenk reserved, a new environment variable "mem" will 2600 c609719bSwdenk automatically be defined to hold the amount of 2601 c609719bSwdenk remaining RAM in a form that can be passed as boot 2602 c609719bSwdenk argument to Linux, for instance like that: 2603 c609719bSwdenk 2604 fe126d8bSWolfgang Denk setenv bootargs ... mem=\${mem} 2605 c609719bSwdenk saveenv 2606 c609719bSwdenk 2607 c609719bSwdenk This way you can tell Linux not to use this memory, 2608 c609719bSwdenk either, which results in a memory region that will 2609 c609719bSwdenk not be affected by reboots. 2610 c609719bSwdenk 2611 c609719bSwdenk *WARNING* If your board configuration uses automatic 2612 c609719bSwdenk detection of the RAM size, you must make sure that 2613 c609719bSwdenk this memory test is non-destructive. So far, the 2614 c609719bSwdenk following board configurations are known to be 2615 c609719bSwdenk "pRAM-clean": 2616 c609719bSwdenk 2617 1b0757ecSWolfgang Denk IVMS8, IVML24, SPD8xx, TQM8xxL, 2618 1b0757ecSWolfgang Denk HERMES, IP860, RPXlite, LWMON, 2619 544d97e9SWolfgang Denk FLAGADM, TQM8260 2620 c609719bSwdenk 2621 40fef049SGabe Black- Access to physical memory region (> 4GB) 2622 40fef049SGabe Black Some basic support is provided for operations on memory not 2623 40fef049SGabe Black normally accessible to U-Boot - e.g. some architectures 2624 40fef049SGabe Black support access to more than 4GB of memory on 32-bit 2625 40fef049SGabe Black machines using physical address extension or similar. 2626 40fef049SGabe Black Define CONFIG_PHYSMEM to access this basic support, which 2627 40fef049SGabe Black currently only supports clearing the memory. 2628 40fef049SGabe Black 2629 c609719bSwdenk- Error Recovery: 2630 c609719bSwdenk CONFIG_PANIC_HANG 2631 c609719bSwdenk 2632 c609719bSwdenk Define this variable to stop the system in case of a 2633 c609719bSwdenk fatal error, so that you have to reset it manually. 2634 c609719bSwdenk This is probably NOT a good idea for an embedded 2635 11ccc33fSMarcel Ziswiler system where you want the system to reboot 2636 c609719bSwdenk automatically as fast as possible, but it may be 2637 c609719bSwdenk useful during development since you can try to debug 2638 c609719bSwdenk the conditions that lead to the situation. 2639 c609719bSwdenk 2640 c609719bSwdenk CONFIG_NET_RETRY_COUNT 2641 c609719bSwdenk 2642 c609719bSwdenk This variable defines the number of retries for 2643 c609719bSwdenk network operations like ARP, RARP, TFTP, or BOOTP 2644 c609719bSwdenk before giving up the operation. If not defined, a 2645 c609719bSwdenk default value of 5 is used. 2646 c609719bSwdenk 2647 40cb90eeSGuennadi Liakhovetski CONFIG_ARP_TIMEOUT 2648 40cb90eeSGuennadi Liakhovetski 2649 40cb90eeSGuennadi Liakhovetski Timeout waiting for an ARP reply in milliseconds. 2650 40cb90eeSGuennadi Liakhovetski 2651 48a3e999STetsuyuki Kobayashi CONFIG_NFS_TIMEOUT 2652 48a3e999STetsuyuki Kobayashi 2653 48a3e999STetsuyuki Kobayashi Timeout in milliseconds used in NFS protocol. 2654 48a3e999STetsuyuki Kobayashi If you encounter "ERROR: Cannot umount" in nfs command, 2655 48a3e999STetsuyuki Kobayashi try longer timeout such as 2656 48a3e999STetsuyuki Kobayashi #define CONFIG_NFS_TIMEOUT 10000UL 2657 48a3e999STetsuyuki Kobayashi 2658 c609719bSwdenk- Command Interpreter: 2659 8078f1a5SWolfgang Denk CONFIG_AUTO_COMPLETE 2660 04a85b3bSwdenk 2661 04a85b3bSwdenk Enable auto completion of commands using TAB. 2662 04a85b3bSwdenk 2663 8078f1a5SWolfgang Denk Note that this feature has NOT been implemented yet 2664 8078f1a5SWolfgang Denk for the "hush" shell. 2665 8078f1a5SWolfgang Denk 2666 8078f1a5SWolfgang Denk 2667 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_HUSH_PARSER 2668 c609719bSwdenk 2669 c609719bSwdenk Define this variable to enable the "hush" shell (from 2670 c609719bSwdenk Busybox) as command line interpreter, thus enabling 2671 c609719bSwdenk powerful command line syntax like 2672 c609719bSwdenk if...then...else...fi conditionals or `&&' and '||' 2673 c609719bSwdenk constructs ("shell scripts"). 2674 c609719bSwdenk 2675 c609719bSwdenk If undefined, you get the old, much simpler behaviour 2676 c609719bSwdenk with a somewhat smaller memory footprint. 2677 c609719bSwdenk 2678 c609719bSwdenk 2679 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PROMPT_HUSH_PS2 2680 c609719bSwdenk 2681 c609719bSwdenk This defines the secondary prompt string, which is 2682 c609719bSwdenk printed when the command interpreter needs more input 2683 c609719bSwdenk to complete a command. Usually "> ". 2684 c609719bSwdenk 2685 c609719bSwdenk Note: 2686 c609719bSwdenk 2687 c609719bSwdenk In the current implementation, the local variables 2688 c609719bSwdenk space and global environment variables space are 2689 c609719bSwdenk separated. Local variables are those you define by 2690 3b57fe0aSwdenk simply typing `name=value'. To access a local 2691 c609719bSwdenk variable later on, you have write `$name' or 2692 3b57fe0aSwdenk `${name}'; to execute the contents of a variable 2693 3b57fe0aSwdenk directly type `$name' at the command prompt. 2694 c609719bSwdenk 2695 c609719bSwdenk Global environment variables are those you use 2696 c609719bSwdenk setenv/printenv to work with. To run a command stored 2697 c609719bSwdenk in such a variable, you need to use the run command, 2698 c609719bSwdenk and you must not use the '$' sign to access them. 2699 c609719bSwdenk 2700 c609719bSwdenk To store commands and special characters in a 2701 c609719bSwdenk variable, please use double quotation marks 2702 c609719bSwdenk surrounding the whole text of the variable, instead 2703 c609719bSwdenk of the backslashes before semicolons and special 2704 c609719bSwdenk symbols. 2705 c609719bSwdenk 2706 aa0c71acSWolfgang Denk- Commandline Editing and History: 2707 aa0c71acSWolfgang Denk CONFIG_CMDLINE_EDITING 2708 aa0c71acSWolfgang Denk 2709 11ccc33fSMarcel Ziswiler Enable editing and History functions for interactive 2710 aa0c71acSWolfgang Denk commandline input operations 2711 aa0c71acSWolfgang Denk 2712 a8c7c708Swdenk- Default Environment: 2713 c609719bSwdenk CONFIG_EXTRA_ENV_SETTINGS 2714 c609719bSwdenk 2715 c609719bSwdenk Define this to contain any number of null terminated 2716 c609719bSwdenk strings (variable = value pairs) that will be part of 2717 7152b1d0Swdenk the default environment compiled into the boot image. 2718 2262cfeeSwdenk 2719 c609719bSwdenk For example, place something like this in your 2720 c609719bSwdenk board's config file: 2721 c609719bSwdenk 2722 c609719bSwdenk #define CONFIG_EXTRA_ENV_SETTINGS \ 2723 c609719bSwdenk "myvar1=value1\0" \ 2724 c609719bSwdenk "myvar2=value2\0" 2725 c609719bSwdenk 2726 c609719bSwdenk Warning: This method is based on knowledge about the 2727 c609719bSwdenk internal format how the environment is stored by the 2728 2262cfeeSwdenk U-Boot code. This is NOT an official, exported 2729 c609719bSwdenk interface! Although it is unlikely that this format 2730 7152b1d0Swdenk will change soon, there is no guarantee either. 2731 c609719bSwdenk You better know what you are doing here. 2732 c609719bSwdenk 2733 c609719bSwdenk Note: overly (ab)use of the default environment is 2734 c609719bSwdenk discouraged. Make sure to check other ways to preset 2735 74de7aefSWolfgang Denk the environment like the "source" command or the 2736 c609719bSwdenk boot command first. 2737 c609719bSwdenk 2738 5e724ca2SStephen Warren CONFIG_ENV_VARS_UBOOT_CONFIG 2739 5e724ca2SStephen Warren 2740 5e724ca2SStephen Warren Define this in order to add variables describing the 2741 5e724ca2SStephen Warren U-Boot build configuration to the default environment. 2742 5e724ca2SStephen Warren These will be named arch, cpu, board, vendor, and soc. 2743 5e724ca2SStephen Warren 2744 5e724ca2SStephen Warren Enabling this option will cause the following to be defined: 2745 5e724ca2SStephen Warren 2746 5e724ca2SStephen Warren - CONFIG_SYS_ARCH 2747 5e724ca2SStephen Warren - CONFIG_SYS_CPU 2748 5e724ca2SStephen Warren - CONFIG_SYS_BOARD 2749 5e724ca2SStephen Warren - CONFIG_SYS_VENDOR 2750 5e724ca2SStephen Warren - CONFIG_SYS_SOC 2751 5e724ca2SStephen Warren 2752 7e27f89fSTom Rini CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG 2753 7e27f89fSTom Rini 2754 7e27f89fSTom Rini Define this in order to add variables describing certain 2755 7e27f89fSTom Rini run-time determined information about the hardware to the 2756 7e27f89fSTom Rini environment. These will be named board_name, board_rev. 2757 7e27f89fSTom Rini 2758 06fd8538SSimon Glass CONFIG_DELAY_ENVIRONMENT 2759 06fd8538SSimon Glass 2760 06fd8538SSimon Glass Normally the environment is loaded when the board is 2761 06fd8538SSimon Glass intialised so that it is available to U-Boot. This inhibits 2762 06fd8538SSimon Glass that so that the environment is not available until 2763 06fd8538SSimon Glass explicitly loaded later by U-Boot code. With CONFIG_OF_CONTROL 2764 06fd8538SSimon Glass this is instead controlled by the value of 2765 06fd8538SSimon Glass /config/load-environment. 2766 06fd8538SSimon Glass 2767 a8c7c708Swdenk- DataFlash Support: 2768 2abbe075Swdenk CONFIG_HAS_DATAFLASH 2769 2abbe075Swdenk 2770 2abbe075Swdenk Defining this option enables DataFlash features and 2771 2abbe075Swdenk allows to read/write in Dataflash via the standard 2772 2abbe075Swdenk commands cp, md... 2773 2abbe075Swdenk 2774 f61ec45eSEric Nelson- Serial Flash support 2775 f61ec45eSEric Nelson CONFIG_CMD_SF 2776 f61ec45eSEric Nelson 2777 f61ec45eSEric Nelson Defining this option enables SPI flash commands 2778 f61ec45eSEric Nelson 'sf probe/read/write/erase/update'. 2779 f61ec45eSEric Nelson 2780 f61ec45eSEric Nelson Usage requires an initial 'probe' to define the serial 2781 f61ec45eSEric Nelson flash parameters, followed by read/write/erase/update 2782 f61ec45eSEric Nelson commands. 2783 f61ec45eSEric Nelson 2784 f61ec45eSEric Nelson The following defaults may be provided by the platform 2785 f61ec45eSEric Nelson to handle the common case when only a single serial 2786 f61ec45eSEric Nelson flash is present on the system. 2787 f61ec45eSEric Nelson 2788 f61ec45eSEric Nelson CONFIG_SF_DEFAULT_BUS Bus identifier 2789 f61ec45eSEric Nelson CONFIG_SF_DEFAULT_CS Chip-select 2790 f61ec45eSEric Nelson CONFIG_SF_DEFAULT_MODE (see include/spi.h) 2791 f61ec45eSEric Nelson CONFIG_SF_DEFAULT_SPEED in Hz 2792 f61ec45eSEric Nelson 2793 24007273SSimon Glass CONFIG_CMD_SF_TEST 2794 24007273SSimon Glass 2795 24007273SSimon Glass Define this option to include a destructive SPI flash 2796 24007273SSimon Glass test ('sf test'). 2797 24007273SSimon Glass 2798 1dcd6d03SJagannadha Sutradharudu Teki CONFIG_SPI_FLASH_BAR Ban/Extended Addr Reg 2799 1dcd6d03SJagannadha Sutradharudu Teki 2800 1dcd6d03SJagannadha Sutradharudu Teki Define this option to use the Bank addr/Extended addr 2801 1dcd6d03SJagannadha Sutradharudu Teki support on SPI flashes which has size > 16Mbytes. 2802 1dcd6d03SJagannadha Sutradharudu Teki 2803 b902e07cSJagannadha Sutradharudu Teki CONFIG_SF_DUAL_FLASH Dual flash memories 2804 b902e07cSJagannadha Sutradharudu Teki 2805 b902e07cSJagannadha Sutradharudu Teki Define this option to use dual flash support where two flash 2806 b902e07cSJagannadha Sutradharudu Teki memories can be connected with a given cs line. 2807 b902e07cSJagannadha Sutradharudu Teki currently Xilinx Zynq qspi support these type of connections. 2808 b902e07cSJagannadha Sutradharudu Teki 2809 3f85ce27Swdenk- SystemACE Support: 2810 3f85ce27Swdenk CONFIG_SYSTEMACE 2811 3f85ce27Swdenk 2812 3f85ce27Swdenk Adding this option adds support for Xilinx SystemACE 2813 3f85ce27Swdenk chips attached via some sort of local bus. The address 2814 11ccc33fSMarcel Ziswiler of the chip must also be defined in the 2815 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_SYSTEMACE_BASE macro. For example: 2816 3f85ce27Swdenk 2817 3f85ce27Swdenk #define CONFIG_SYSTEMACE 2818 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD #define CONFIG_SYS_SYSTEMACE_BASE 0xf0000000 2819 3f85ce27Swdenk 2820 3f85ce27Swdenk When SystemACE support is added, the "ace" device type 2821 3f85ce27Swdenk becomes available to the fat commands, i.e. fatls. 2822 3f85ce27Swdenk 2823 ecb0ccd9SWolfgang Denk- TFTP Fixed UDP Port: 2824 ecb0ccd9SWolfgang Denk CONFIG_TFTP_PORT 2825 ecb0ccd9SWolfgang Denk 2826 28cb9375SWolfgang Denk If this is defined, the environment variable tftpsrcp 2827 ecb0ccd9SWolfgang Denk is used to supply the TFTP UDP source port value. 2828 28cb9375SWolfgang Denk If tftpsrcp isn't defined, the normal pseudo-random port 2829 ecb0ccd9SWolfgang Denk number generator is used. 2830 ecb0ccd9SWolfgang Denk 2831 28cb9375SWolfgang Denk Also, the environment variable tftpdstp is used to supply 2832 28cb9375SWolfgang Denk the TFTP UDP destination port value. If tftpdstp isn't 2833 28cb9375SWolfgang Denk defined, the normal port 69 is used. 2834 28cb9375SWolfgang Denk 2835 28cb9375SWolfgang Denk The purpose for tftpsrcp is to allow a TFTP server to 2836 ecb0ccd9SWolfgang Denk blindly start the TFTP transfer using the pre-configured 2837 ecb0ccd9SWolfgang Denk target IP address and UDP port. This has the effect of 2838 ecb0ccd9SWolfgang Denk "punching through" the (Windows XP) firewall, allowing 2839 ecb0ccd9SWolfgang Denk the remainder of the TFTP transfer to proceed normally. 2840 ecb0ccd9SWolfgang Denk A better solution is to properly configure the firewall, 2841 ecb0ccd9SWolfgang Denk but sometimes that is not allowed. 2842 ecb0ccd9SWolfgang Denk 2843 bf36c5d5SSimon Glass- Hashing support: 2844 bf36c5d5SSimon Glass CONFIG_CMD_HASH 2845 bf36c5d5SSimon Glass 2846 bf36c5d5SSimon Glass This enables a generic 'hash' command which can produce 2847 bf36c5d5SSimon Glass hashes / digests from a few algorithms (e.g. SHA1, SHA256). 2848 bf36c5d5SSimon Glass 2849 bf36c5d5SSimon Glass CONFIG_HASH_VERIFY 2850 bf36c5d5SSimon Glass 2851 bf36c5d5SSimon Glass Enable the hash verify command (hash -v). This adds to code 2852 bf36c5d5SSimon Glass size a little. 2853 bf36c5d5SSimon Glass 2854 bf36c5d5SSimon Glass CONFIG_SHA1 - support SHA1 hashing 2855 bf36c5d5SSimon Glass CONFIG_SHA256 - support SHA256 hashing 2856 bf36c5d5SSimon Glass 2857 bf36c5d5SSimon Glass Note: There is also a sha1sum command, which should perhaps 2858 bf36c5d5SSimon Glass be deprecated in favour of 'hash sha1'. 2859 bf36c5d5SSimon Glass 2860 a11f1873SRobert Winkler- Freescale i.MX specific commands: 2861 a11f1873SRobert Winkler CONFIG_CMD_HDMIDETECT 2862 a11f1873SRobert Winkler This enables 'hdmidet' command which returns true if an 2863 a11f1873SRobert Winkler HDMI monitor is detected. This command is i.MX 6 specific. 2864 a11f1873SRobert Winkler 2865 a11f1873SRobert Winkler CONFIG_CMD_BMODE 2866 a11f1873SRobert Winkler This enables the 'bmode' (bootmode) command for forcing 2867 a11f1873SRobert Winkler a boot from specific media. 2868 a11f1873SRobert Winkler 2869 a11f1873SRobert Winkler This is useful for forcing the ROM's usb downloader to 2870 a11f1873SRobert Winkler activate upon a watchdog reset which is nice when iterating 2871 a11f1873SRobert Winkler on U-Boot. Using the reset button or running bmode normal 2872 a11f1873SRobert Winkler will set it back to normal. This command currently 2873 a11f1873SRobert Winkler supports i.MX53 and i.MX6. 2874 a11f1873SRobert Winkler 2875 19c402afSSimon Glass- Signing support: 2876 19c402afSSimon Glass CONFIG_RSA 2877 19c402afSSimon Glass 2878 19c402afSSimon Glass This enables the RSA algorithm used for FIT image verification 2879 8bf2aad7SDetlev Zundel in U-Boot. See doc/uImage.FIT/signature.txt for more information. 2880 19c402afSSimon Glass 2881 19c402afSSimon Glass The signing part is build into mkimage regardless of this 2882 19c402afSSimon Glass option. 2883 19c402afSSimon Glass 2884 9e50c406SHeiko Schocher- bootcount support: 2885 9e50c406SHeiko Schocher CONFIG_BOOTCOUNT_LIMIT 2886 9e50c406SHeiko Schocher 2887 9e50c406SHeiko Schocher This enables the bootcounter support, see: 2888 9e50c406SHeiko Schocher http://www.denx.de/wiki/DULG/UBootBootCountLimit 2889 9e50c406SHeiko Schocher 2890 9e50c406SHeiko Schocher CONFIG_AT91SAM9XE 2891 9e50c406SHeiko Schocher enable special bootcounter support on at91sam9xe based boards. 2892 9e50c406SHeiko Schocher CONFIG_BLACKFIN 2893 9e50c406SHeiko Schocher enable special bootcounter support on blackfin based boards. 2894 9e50c406SHeiko Schocher CONFIG_SOC_DA8XX 2895 9e50c406SHeiko Schocher enable special bootcounter support on da850 based boards. 2896 9e50c406SHeiko Schocher CONFIG_BOOTCOUNT_RAM 2897 9e50c406SHeiko Schocher enable support for the bootcounter in RAM 2898 9e50c406SHeiko Schocher CONFIG_BOOTCOUNT_I2C 2899 9e50c406SHeiko Schocher enable support for the bootcounter on an i2c (like RTC) device. 2900 9e50c406SHeiko Schocher CONFIG_SYS_I2C_RTC_ADDR = i2c chip address 2901 9e50c406SHeiko Schocher CONFIG_SYS_BOOTCOUNT_ADDR = i2c addr which is used for 2902 9e50c406SHeiko Schocher the bootcounter. 2903 9e50c406SHeiko Schocher CONFIG_BOOTCOUNT_ALEN = address len 2904 19c402afSSimon Glass 2905 a8c7c708Swdenk- Show boot progress: 2906 c609719bSwdenk CONFIG_SHOW_BOOT_PROGRESS 2907 c609719bSwdenk 2908 c609719bSwdenk Defining this option allows to add some board- 2909 c609719bSwdenk specific code (calling a user-provided function 2910 c609719bSwdenk "show_boot_progress(int)") that enables you to show 2911 c609719bSwdenk the system's boot progress on some display (for 2912 c609719bSwdenk example, some LED's) on your board. At the moment, 2913 c609719bSwdenk the following checkpoints are implemented: 2914 c609719bSwdenk 2915 3a608ca0SSimon Glass- Detailed boot stage timing 2916 3a608ca0SSimon Glass CONFIG_BOOTSTAGE 2917 3a608ca0SSimon Glass Define this option to get detailed timing of each stage 2918 3a608ca0SSimon Glass of the boot process. 2919 3a608ca0SSimon Glass 2920 3a608ca0SSimon Glass CONFIG_BOOTSTAGE_USER_COUNT 2921 3a608ca0SSimon Glass This is the number of available user bootstage records. 2922 3a608ca0SSimon Glass Each time you call bootstage_mark(BOOTSTAGE_ID_ALLOC, ...) 2923 3a608ca0SSimon Glass a new ID will be allocated from this stash. If you exceed 2924 3a608ca0SSimon Glass the limit, recording will stop. 2925 3a608ca0SSimon Glass 2926 3a608ca0SSimon Glass CONFIG_BOOTSTAGE_REPORT 2927 3a608ca0SSimon Glass Define this to print a report before boot, similar to this: 2928 3a608ca0SSimon Glass 2929 3a608ca0SSimon Glass Timer summary in microseconds: 2930 3a608ca0SSimon Glass Mark Elapsed Stage 2931 3a608ca0SSimon Glass 0 0 reset 2932 3a608ca0SSimon Glass 3,575,678 3,575,678 board_init_f start 2933 3a608ca0SSimon Glass 3,575,695 17 arch_cpu_init A9 2934 3a608ca0SSimon Glass 3,575,777 82 arch_cpu_init done 2935 3a608ca0SSimon Glass 3,659,598 83,821 board_init_r start 2936 3a608ca0SSimon Glass 3,910,375 250,777 main_loop 2937 3a608ca0SSimon Glass 29,916,167 26,005,792 bootm_start 2938 3a608ca0SSimon Glass 30,361,327 445,160 start_kernel 2939 3a608ca0SSimon Glass 2940 2eba38cfSSimon Glass CONFIG_CMD_BOOTSTAGE 2941 2eba38cfSSimon Glass Add a 'bootstage' command which supports printing a report 2942 2eba38cfSSimon Glass and un/stashing of bootstage data. 2943 2eba38cfSSimon Glass 2944 94fd1316SSimon Glass CONFIG_BOOTSTAGE_FDT 2945 94fd1316SSimon Glass Stash the bootstage information in the FDT. A root 'bootstage' 2946 94fd1316SSimon Glass node is created with each bootstage id as a child. Each child 2947 94fd1316SSimon Glass has a 'name' property and either 'mark' containing the 2948 94fd1316SSimon Glass mark time in microsecond, or 'accum' containing the 2949 94fd1316SSimon Glass accumulated time for that bootstage id in microseconds. 2950 94fd1316SSimon Glass For example: 2951 94fd1316SSimon Glass 2952 94fd1316SSimon Glass bootstage { 2953 94fd1316SSimon Glass 154 { 2954 94fd1316SSimon Glass name = "board_init_f"; 2955 94fd1316SSimon Glass mark = <3575678>; 2956 94fd1316SSimon Glass }; 2957 94fd1316SSimon Glass 170 { 2958 94fd1316SSimon Glass name = "lcd"; 2959 94fd1316SSimon Glass accum = <33482>; 2960 94fd1316SSimon Glass }; 2961 94fd1316SSimon Glass }; 2962 94fd1316SSimon Glass 2963 94fd1316SSimon Glass Code in the Linux kernel can find this in /proc/devicetree. 2964 94fd1316SSimon Glass 2965 1372cce2SMarian BalakowiczLegacy uImage format: 2966 1372cce2SMarian Balakowicz 2967 c609719bSwdenk Arg Where When 2968 c609719bSwdenk 1 common/cmd_bootm.c before attempting to boot an image 2969 c609719bSwdenk -1 common/cmd_bootm.c Image header has bad magic number 2970 c609719bSwdenk 2 common/cmd_bootm.c Image header has correct magic number 2971 c609719bSwdenk -2 common/cmd_bootm.c Image header has bad checksum 2972 c609719bSwdenk 3 common/cmd_bootm.c Image header has correct checksum 2973 c609719bSwdenk -3 common/cmd_bootm.c Image data has bad checksum 2974 c609719bSwdenk 4 common/cmd_bootm.c Image data has correct checksum 2975 c609719bSwdenk -4 common/cmd_bootm.c Image is for unsupported architecture 2976 c609719bSwdenk 5 common/cmd_bootm.c Architecture check OK 2977 1372cce2SMarian Balakowicz -5 common/cmd_bootm.c Wrong Image Type (not kernel, multi) 2978 c609719bSwdenk 6 common/cmd_bootm.c Image Type check OK 2979 c609719bSwdenk -6 common/cmd_bootm.c gunzip uncompression error 2980 c609719bSwdenk -7 common/cmd_bootm.c Unimplemented compression type 2981 c609719bSwdenk 7 common/cmd_bootm.c Uncompression OK 2982 1372cce2SMarian Balakowicz 8 common/cmd_bootm.c No uncompress/copy overwrite error 2983 c609719bSwdenk -9 common/cmd_bootm.c Unsupported OS (not Linux, BSD, VxWorks, QNX) 2984 1372cce2SMarian Balakowicz 2985 1372cce2SMarian Balakowicz 9 common/image.c Start initial ramdisk verification 2986 1372cce2SMarian Balakowicz -10 common/image.c Ramdisk header has bad magic number 2987 1372cce2SMarian Balakowicz -11 common/image.c Ramdisk header has bad checksum 2988 1372cce2SMarian Balakowicz 10 common/image.c Ramdisk header is OK 2989 1372cce2SMarian Balakowicz -12 common/image.c Ramdisk data has bad checksum 2990 1372cce2SMarian Balakowicz 11 common/image.c Ramdisk data has correct checksum 2991 1372cce2SMarian Balakowicz 12 common/image.c Ramdisk verification complete, start loading 2992 11ccc33fSMarcel Ziswiler -13 common/image.c Wrong Image Type (not PPC Linux ramdisk) 2993 1372cce2SMarian Balakowicz 13 common/image.c Start multifile image verification 2994 1372cce2SMarian Balakowicz 14 common/image.c No initial ramdisk, no multifile, continue. 2995 1372cce2SMarian Balakowicz 2996 ea0364f1SPeter Tyser 15 arch/<arch>/lib/bootm.c All preparation done, transferring control to OS 2997 c609719bSwdenk 2998 a47a12beSStefan Roese -30 arch/powerpc/lib/board.c Fatal error, hang the system 2999 63e73c9aSwdenk -31 post/post.c POST test failed, detected by post_output_backlog() 3000 63e73c9aSwdenk -32 post/post.c POST test failed, detected by post_run_single() 3001 63e73c9aSwdenk 3002 566a494fSHeiko Schocher 34 common/cmd_doc.c before loading a Image from a DOC device 3003 566a494fSHeiko Schocher -35 common/cmd_doc.c Bad usage of "doc" command 3004 566a494fSHeiko Schocher 35 common/cmd_doc.c correct usage of "doc" command 3005 566a494fSHeiko Schocher -36 common/cmd_doc.c No boot device 3006 566a494fSHeiko Schocher 36 common/cmd_doc.c correct boot device 3007 566a494fSHeiko Schocher -37 common/cmd_doc.c Unknown Chip ID on boot device 3008 566a494fSHeiko Schocher 37 common/cmd_doc.c correct chip ID found, device available 3009 566a494fSHeiko Schocher -38 common/cmd_doc.c Read Error on boot device 3010 566a494fSHeiko Schocher 38 common/cmd_doc.c reading Image header from DOC device OK 3011 566a494fSHeiko Schocher -39 common/cmd_doc.c Image header has bad magic number 3012 566a494fSHeiko Schocher 39 common/cmd_doc.c Image header has correct magic number 3013 566a494fSHeiko Schocher -40 common/cmd_doc.c Error reading Image from DOC device 3014 566a494fSHeiko Schocher 40 common/cmd_doc.c Image header has correct magic number 3015 566a494fSHeiko Schocher 41 common/cmd_ide.c before loading a Image from a IDE device 3016 566a494fSHeiko Schocher -42 common/cmd_ide.c Bad usage of "ide" command 3017 566a494fSHeiko Schocher 42 common/cmd_ide.c correct usage of "ide" command 3018 566a494fSHeiko Schocher -43 common/cmd_ide.c No boot device 3019 566a494fSHeiko Schocher 43 common/cmd_ide.c boot device found 3020 566a494fSHeiko Schocher -44 common/cmd_ide.c Device not available 3021 566a494fSHeiko Schocher 44 common/cmd_ide.c Device available 3022 566a494fSHeiko Schocher -45 common/cmd_ide.c wrong partition selected 3023 566a494fSHeiko Schocher 45 common/cmd_ide.c partition selected 3024 566a494fSHeiko Schocher -46 common/cmd_ide.c Unknown partition table 3025 566a494fSHeiko Schocher 46 common/cmd_ide.c valid partition table found 3026 566a494fSHeiko Schocher -47 common/cmd_ide.c Invalid partition type 3027 566a494fSHeiko Schocher 47 common/cmd_ide.c correct partition type 3028 566a494fSHeiko Schocher -48 common/cmd_ide.c Error reading Image Header on boot device 3029 566a494fSHeiko Schocher 48 common/cmd_ide.c reading Image Header from IDE device OK 3030 566a494fSHeiko Schocher -49 common/cmd_ide.c Image header has bad magic number 3031 566a494fSHeiko Schocher 49 common/cmd_ide.c Image header has correct magic number 3032 566a494fSHeiko Schocher -50 common/cmd_ide.c Image header has bad checksum 3033 566a494fSHeiko Schocher 50 common/cmd_ide.c Image header has correct checksum 3034 566a494fSHeiko Schocher -51 common/cmd_ide.c Error reading Image from IDE device 3035 566a494fSHeiko Schocher 51 common/cmd_ide.c reading Image from IDE device OK 3036 566a494fSHeiko Schocher 52 common/cmd_nand.c before loading a Image from a NAND device 3037 566a494fSHeiko Schocher -53 common/cmd_nand.c Bad usage of "nand" command 3038 566a494fSHeiko Schocher 53 common/cmd_nand.c correct usage of "nand" command 3039 566a494fSHeiko Schocher -54 common/cmd_nand.c No boot device 3040 566a494fSHeiko Schocher 54 common/cmd_nand.c boot device found 3041 566a494fSHeiko Schocher -55 common/cmd_nand.c Unknown Chip ID on boot device 3042 566a494fSHeiko Schocher 55 common/cmd_nand.c correct chip ID found, device available 3043 566a494fSHeiko Schocher -56 common/cmd_nand.c Error reading Image Header on boot device 3044 566a494fSHeiko Schocher 56 common/cmd_nand.c reading Image Header from NAND device OK 3045 566a494fSHeiko Schocher -57 common/cmd_nand.c Image header has bad magic number 3046 566a494fSHeiko Schocher 57 common/cmd_nand.c Image header has correct magic number 3047 566a494fSHeiko Schocher -58 common/cmd_nand.c Error reading Image from NAND device 3048 566a494fSHeiko Schocher 58 common/cmd_nand.c reading Image from NAND device OK 3049 c609719bSwdenk 3050 566a494fSHeiko Schocher -60 common/env_common.c Environment has a bad CRC, using default 3051 c609719bSwdenk 3052 566a494fSHeiko Schocher 64 net/eth.c starting with Ethernet configuration. 3053 566a494fSHeiko Schocher -64 net/eth.c no Ethernet found. 3054 566a494fSHeiko Schocher 65 net/eth.c Ethernet found. 3055 206c60cbSwdenk 3056 566a494fSHeiko Schocher -80 common/cmd_net.c usage wrong 3057 566a494fSHeiko Schocher 80 common/cmd_net.c before calling NetLoop() 3058 11ccc33fSMarcel Ziswiler -81 common/cmd_net.c some error in NetLoop() occurred 3059 566a494fSHeiko Schocher 81 common/cmd_net.c NetLoop() back without error 3060 566a494fSHeiko Schocher -82 common/cmd_net.c size == 0 (File with size 0 loaded) 3061 566a494fSHeiko Schocher 82 common/cmd_net.c trying automatic boot 3062 74de7aefSWolfgang Denk 83 common/cmd_net.c running "source" command 3063 74de7aefSWolfgang Denk -83 common/cmd_net.c some error in automatic boot or "source" command 3064 566a494fSHeiko Schocher 84 common/cmd_net.c end without errors 3065 c609719bSwdenk 3066 1372cce2SMarian BalakowiczFIT uImage format: 3067 1372cce2SMarian Balakowicz 3068 1372cce2SMarian Balakowicz Arg Where When 3069 1372cce2SMarian Balakowicz 100 common/cmd_bootm.c Kernel FIT Image has correct format 3070 1372cce2SMarian Balakowicz -100 common/cmd_bootm.c Kernel FIT Image has incorrect format 3071 1372cce2SMarian Balakowicz 101 common/cmd_bootm.c No Kernel subimage unit name, using configuration 3072 1372cce2SMarian Balakowicz -101 common/cmd_bootm.c Can't get configuration for kernel subimage 3073 1372cce2SMarian Balakowicz 102 common/cmd_bootm.c Kernel unit name specified 3074 1372cce2SMarian Balakowicz -103 common/cmd_bootm.c Can't get kernel subimage node offset 3075 f773bea8SMarian Balakowicz 103 common/cmd_bootm.c Found configuration node 3076 1372cce2SMarian Balakowicz 104 common/cmd_bootm.c Got kernel subimage node offset 3077 1372cce2SMarian Balakowicz -104 common/cmd_bootm.c Kernel subimage hash verification failed 3078 1372cce2SMarian Balakowicz 105 common/cmd_bootm.c Kernel subimage hash verification OK 3079 1372cce2SMarian Balakowicz -105 common/cmd_bootm.c Kernel subimage is for unsupported architecture 3080 1372cce2SMarian Balakowicz 106 common/cmd_bootm.c Architecture check OK 3081 11ccc33fSMarcel Ziswiler -106 common/cmd_bootm.c Kernel subimage has wrong type 3082 11ccc33fSMarcel Ziswiler 107 common/cmd_bootm.c Kernel subimage type OK 3083 1372cce2SMarian Balakowicz -107 common/cmd_bootm.c Can't get kernel subimage data/size 3084 1372cce2SMarian Balakowicz 108 common/cmd_bootm.c Got kernel subimage data/size 3085 1372cce2SMarian Balakowicz -108 common/cmd_bootm.c Wrong image type (not legacy, FIT) 3086 1372cce2SMarian Balakowicz -109 common/cmd_bootm.c Can't get kernel subimage type 3087 1372cce2SMarian Balakowicz -110 common/cmd_bootm.c Can't get kernel subimage comp 3088 1372cce2SMarian Balakowicz -111 common/cmd_bootm.c Can't get kernel subimage os 3089 1372cce2SMarian Balakowicz -112 common/cmd_bootm.c Can't get kernel subimage load address 3090 1372cce2SMarian Balakowicz -113 common/cmd_bootm.c Image uncompress/copy overwrite error 3091 1372cce2SMarian Balakowicz 3092 1372cce2SMarian Balakowicz 120 common/image.c Start initial ramdisk verification 3093 1372cce2SMarian Balakowicz -120 common/image.c Ramdisk FIT image has incorrect format 3094 1372cce2SMarian Balakowicz 121 common/image.c Ramdisk FIT image has correct format 3095 11ccc33fSMarcel Ziswiler 122 common/image.c No ramdisk subimage unit name, using configuration 3096 1372cce2SMarian Balakowicz -122 common/image.c Can't get configuration for ramdisk subimage 3097 1372cce2SMarian Balakowicz 123 common/image.c Ramdisk unit name specified 3098 1372cce2SMarian Balakowicz -124 common/image.c Can't get ramdisk subimage node offset 3099 1372cce2SMarian Balakowicz 125 common/image.c Got ramdisk subimage node offset 3100 1372cce2SMarian Balakowicz -125 common/image.c Ramdisk subimage hash verification failed 3101 1372cce2SMarian Balakowicz 126 common/image.c Ramdisk subimage hash verification OK 3102 1372cce2SMarian Balakowicz -126 common/image.c Ramdisk subimage for unsupported architecture 3103 1372cce2SMarian Balakowicz 127 common/image.c Architecture check OK 3104 1372cce2SMarian Balakowicz -127 common/image.c Can't get ramdisk subimage data/size 3105 1372cce2SMarian Balakowicz 128 common/image.c Got ramdisk subimage data/size 3106 1372cce2SMarian Balakowicz 129 common/image.c Can't get ramdisk load address 3107 1372cce2SMarian Balakowicz -129 common/image.c Got ramdisk load address 3108 1372cce2SMarian Balakowicz 3109 11ccc33fSMarcel Ziswiler -130 common/cmd_doc.c Incorrect FIT image format 3110 1372cce2SMarian Balakowicz 131 common/cmd_doc.c FIT image format OK 3111 1372cce2SMarian Balakowicz 3112 11ccc33fSMarcel Ziswiler -140 common/cmd_ide.c Incorrect FIT image format 3113 1372cce2SMarian Balakowicz 141 common/cmd_ide.c FIT image format OK 3114 1372cce2SMarian Balakowicz 3115 11ccc33fSMarcel Ziswiler -150 common/cmd_nand.c Incorrect FIT image format 3116 1372cce2SMarian Balakowicz 151 common/cmd_nand.c FIT image format OK 3117 1372cce2SMarian Balakowicz 3118 d95f6ec7SGabe Black- FIT image support: 3119 d95f6ec7SGabe Black CONFIG_FIT 3120 d95f6ec7SGabe Black Enable support for the FIT uImage format. 3121 d95f6ec7SGabe Black 3122 d95f6ec7SGabe Black CONFIG_FIT_BEST_MATCH 3123 d95f6ec7SGabe Black When no configuration is explicitly selected, default to the 3124 d95f6ec7SGabe Black one whose fdt's compatibility field best matches that of 3125 d95f6ec7SGabe Black U-Boot itself. A match is considered "best" if it matches the 3126 d95f6ec7SGabe Black most specific compatibility entry of U-Boot's fdt's root node. 3127 d95f6ec7SGabe Black The order of entries in the configuration's fdt is ignored. 3128 d95f6ec7SGabe Black 3129 3e569a6bSSimon Glass CONFIG_FIT_SIGNATURE 3130 3e569a6bSSimon Glass This option enables signature verification of FIT uImages, 3131 3e569a6bSSimon Glass using a hash signed and verified using RSA. See 3132 3e569a6bSSimon Glass doc/uImage.FIT/signature.txt for more details. 3133 3e569a6bSSimon Glass 3134 4cf2609bSWolfgang Denk- Standalone program support: 3135 4cf2609bSWolfgang Denk CONFIG_STANDALONE_LOAD_ADDR 3136 4cf2609bSWolfgang Denk 3137 6feff899SWolfgang Denk This option defines a board specific value for the 3138 6feff899SWolfgang Denk address where standalone program gets loaded, thus 3139 6feff899SWolfgang Denk overwriting the architecture dependent default 3140 4cf2609bSWolfgang Denk settings. 3141 4cf2609bSWolfgang Denk 3142 4cf2609bSWolfgang Denk- Frame Buffer Address: 3143 4cf2609bSWolfgang Denk CONFIG_FB_ADDR 3144 4cf2609bSWolfgang Denk 3145 4cf2609bSWolfgang Denk Define CONFIG_FB_ADDR if you want to use specific 3146 44a53b57SWolfgang Denk address for frame buffer. This is typically the case 3147 44a53b57SWolfgang Denk when using a graphics controller has separate video 3148 44a53b57SWolfgang Denk memory. U-Boot will then place the frame buffer at 3149 44a53b57SWolfgang Denk the given address instead of dynamically reserving it 3150 44a53b57SWolfgang Denk in system RAM by calling lcd_setmem(), which grabs 3151 44a53b57SWolfgang Denk the memory for the frame buffer depending on the 3152 44a53b57SWolfgang Denk configured panel size. 3153 4cf2609bSWolfgang Denk 3154 4cf2609bSWolfgang Denk Please see board_init_f function. 3155 4cf2609bSWolfgang Denk 3156 cccfc2abSDetlev Zundel- Automatic software updates via TFTP server 3157 cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP 3158 cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP_CNT_MAX 3159 cccfc2abSDetlev Zundel CONFIG_UPDATE_TFTP_MSEC_MAX 3160 cccfc2abSDetlev Zundel 3161 cccfc2abSDetlev Zundel These options enable and control the auto-update feature; 3162 cccfc2abSDetlev Zundel for a more detailed description refer to doc/README.update. 3163 cccfc2abSDetlev Zundel 3164 cccfc2abSDetlev Zundel- MTD Support (mtdparts command, UBI support) 3165 cccfc2abSDetlev Zundel CONFIG_MTD_DEVICE 3166 cccfc2abSDetlev Zundel 3167 cccfc2abSDetlev Zundel Adds the MTD device infrastructure from the Linux kernel. 3168 cccfc2abSDetlev Zundel Needed for mtdparts command support. 3169 cccfc2abSDetlev Zundel 3170 cccfc2abSDetlev Zundel CONFIG_MTD_PARTITIONS 3171 cccfc2abSDetlev Zundel 3172 cccfc2abSDetlev Zundel Adds the MTD partitioning infrastructure from the Linux 3173 cccfc2abSDetlev Zundel kernel. Needed for UBI support. 3174 cccfc2abSDetlev Zundel 3175 70c219cdSJoe Hershberger- UBI support 3176 70c219cdSJoe Hershberger CONFIG_CMD_UBI 3177 70c219cdSJoe Hershberger 3178 70c219cdSJoe Hershberger Adds commands for interacting with MTD partitions formatted 3179 70c219cdSJoe Hershberger with the UBI flash translation layer 3180 70c219cdSJoe Hershberger 3181 70c219cdSJoe Hershberger Requires also defining CONFIG_RBTREE 3182 70c219cdSJoe Hershberger 3183 147162daSJoe Hershberger CONFIG_UBI_SILENCE_MSG 3184 147162daSJoe Hershberger 3185 147162daSJoe Hershberger Make the verbose messages from UBI stop printing. This leaves 3186 147162daSJoe Hershberger warnings and errors enabled. 3187 147162daSJoe Hershberger 3188 70c219cdSJoe Hershberger- UBIFS support 3189 70c219cdSJoe Hershberger CONFIG_CMD_UBIFS 3190 70c219cdSJoe Hershberger 3191 70c219cdSJoe Hershberger Adds commands for interacting with UBI volumes formatted as 3192 70c219cdSJoe Hershberger UBIFS. UBIFS is read-only in u-boot. 3193 70c219cdSJoe Hershberger 3194 70c219cdSJoe Hershberger Requires UBI support as well as CONFIG_LZO 3195 70c219cdSJoe Hershberger 3196 147162daSJoe Hershberger CONFIG_UBIFS_SILENCE_MSG 3197 147162daSJoe Hershberger 3198 147162daSJoe Hershberger Make the verbose messages from UBIFS stop printing. This leaves 3199 147162daSJoe Hershberger warnings and errors enabled. 3200 147162daSJoe Hershberger 3201 6a11cf48SDaniel Schwierzeck- SPL framework 3202 6a11cf48SDaniel Schwierzeck CONFIG_SPL 3203 6a11cf48SDaniel Schwierzeck Enable building of SPL globally. 3204 6a11cf48SDaniel Schwierzeck 3205 95579793STom Rini CONFIG_SPL_LDSCRIPT 3206 95579793STom Rini LDSCRIPT for linking the SPL binary. 3207 95579793STom Rini 3208 6ebc3461SAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT 3209 6ebc3461SAlbert ARIBAUD Maximum size in memory allocated to the SPL, BSS included. 3210 6ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual memory 3211 6ebc3461SAlbert ARIBAUD used by SPL from _start to __bss_end does not exceed it. 3212 8960af8bSAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE 3213 6ebc3461SAlbert ARIBAUD must not be both defined at the same time. 3214 6ebc3461SAlbert ARIBAUD 3215 95579793STom Rini CONFIG_SPL_MAX_SIZE 3216 6ebc3461SAlbert ARIBAUD Maximum size of the SPL image (text, data, rodata, and 3217 6ebc3461SAlbert ARIBAUD linker lists sections), BSS excluded. 3218 6ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual size does 3219 6ebc3461SAlbert ARIBAUD not exceed it. 3220 95579793STom Rini 3221 6a11cf48SDaniel Schwierzeck CONFIG_SPL_TEXT_BASE 3222 6a11cf48SDaniel Schwierzeck TEXT_BASE for linking the SPL binary. 3223 6a11cf48SDaniel Schwierzeck 3224 94a45bb1SScott Wood CONFIG_SPL_RELOC_TEXT_BASE 3225 94a45bb1SScott Wood Address to relocate to. If unspecified, this is equal to 3226 94a45bb1SScott Wood CONFIG_SPL_TEXT_BASE (i.e. no relocation is done). 3227 94a45bb1SScott Wood 3228 95579793STom Rini CONFIG_SPL_BSS_START_ADDR 3229 95579793STom Rini Link address for the BSS within the SPL binary. 3230 95579793STom Rini 3231 95579793STom Rini CONFIG_SPL_BSS_MAX_SIZE 3232 6ebc3461SAlbert ARIBAUD Maximum size in memory allocated to the SPL BSS. 3233 6ebc3461SAlbert ARIBAUD When defined, the linker checks that the actual memory used 3234 6ebc3461SAlbert ARIBAUD by SPL from __bss_start to __bss_end does not exceed it. 3235 8960af8bSAlbert ARIBAUD CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE 3236 6ebc3461SAlbert ARIBAUD must not be both defined at the same time. 3237 95579793STom Rini 3238 95579793STom Rini CONFIG_SPL_STACK 3239 95579793STom Rini Adress of the start of the stack SPL will use 3240 95579793STom Rini 3241 94a45bb1SScott Wood CONFIG_SPL_RELOC_STACK 3242 94a45bb1SScott Wood Adress of the start of the stack SPL will use after 3243 94a45bb1SScott Wood relocation. If unspecified, this is equal to 3244 94a45bb1SScott Wood CONFIG_SPL_STACK. 3245 94a45bb1SScott Wood 3246 95579793STom Rini CONFIG_SYS_SPL_MALLOC_START 3247 95579793STom Rini Starting address of the malloc pool used in SPL. 3248 95579793STom Rini 3249 95579793STom Rini CONFIG_SYS_SPL_MALLOC_SIZE 3250 95579793STom Rini The size of the malloc pool used in SPL. 3251 6a11cf48SDaniel Schwierzeck 3252 47f7bcaeSTom Rini CONFIG_SPL_FRAMEWORK 3253 47f7bcaeSTom Rini Enable the SPL framework under common/. This framework 3254 47f7bcaeSTom Rini supports MMC, NAND and YMODEM loading of U-Boot and NAND 3255 47f7bcaeSTom Rini NAND loading of the Linux Kernel. 3256 47f7bcaeSTom Rini 3257 861a86f4STom Rini CONFIG_SPL_DISPLAY_PRINT 3258 861a86f4STom Rini For ARM, enable an optional function to print more information 3259 861a86f4STom Rini about the running system. 3260 861a86f4STom Rini 3261 4b919725SScott Wood CONFIG_SPL_INIT_MINIMAL 3262 4b919725SScott Wood Arch init code should be built for a very small image 3263 4b919725SScott Wood 3264 6a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBCOMMON_SUPPORT 3265 6a11cf48SDaniel Schwierzeck Support for common/libcommon.o in SPL binary 3266 6a11cf48SDaniel Schwierzeck 3267 6a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBDISK_SUPPORT 3268 6a11cf48SDaniel Schwierzeck Support for disk/libdisk.o in SPL binary 3269 6a11cf48SDaniel Schwierzeck 3270 6a11cf48SDaniel Schwierzeck CONFIG_SPL_I2C_SUPPORT 3271 6a11cf48SDaniel Schwierzeck Support for drivers/i2c/libi2c.o in SPL binary 3272 6a11cf48SDaniel Schwierzeck 3273 6a11cf48SDaniel Schwierzeck CONFIG_SPL_GPIO_SUPPORT 3274 6a11cf48SDaniel Schwierzeck Support for drivers/gpio/libgpio.o in SPL binary 3275 6a11cf48SDaniel Schwierzeck 3276 6a11cf48SDaniel Schwierzeck CONFIG_SPL_MMC_SUPPORT 3277 6a11cf48SDaniel Schwierzeck Support for drivers/mmc/libmmc.o in SPL binary 3278 6a11cf48SDaniel Schwierzeck 3279 95579793STom Rini CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR, 3280 95579793STom Rini CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS, 3281 95579793STom Rini CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION 3282 95579793STom Rini Address, size and partition on the MMC to load U-Boot from 3283 95579793STom Rini when the MMC is being used in raw mode. 3284 95579793STom Rini 3285 2b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 3286 2b75b0adSPeter Korsgaard Sector to load kernel uImage from when MMC is being 3287 2b75b0adSPeter Korsgaard used in raw mode (for Falcon mode) 3288 2b75b0adSPeter Korsgaard 3289 2b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR, 3290 2b75b0adSPeter Korsgaard CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS 3291 2b75b0adSPeter Korsgaard Sector and number of sectors to load kernel argument 3292 2b75b0adSPeter Korsgaard parameters from when MMC is being used in raw mode 3293 2b75b0adSPeter Korsgaard (for falcon mode) 3294 2b75b0adSPeter Korsgaard 3295 95579793STom Rini CONFIG_SPL_FAT_SUPPORT 3296 95579793STom Rini Support for fs/fat/libfat.o in SPL binary 3297 95579793STom Rini 3298 95579793STom Rini CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME 3299 95579793STom Rini Filename to read to load U-Boot when reading from FAT 3300 95579793STom Rini 3301 7ad2cc79SPeter Korsgaard CONFIG_SPL_FAT_LOAD_KERNEL_NAME 3302 7ad2cc79SPeter Korsgaard Filename to read to load kernel uImage when reading 3303 7ad2cc79SPeter Korsgaard from FAT (for Falcon mode) 3304 7ad2cc79SPeter Korsgaard 3305 7ad2cc79SPeter Korsgaard CONFIG_SPL_FAT_LOAD_ARGS_NAME 3306 7ad2cc79SPeter Korsgaard Filename to read to load kernel argument parameters 3307 7ad2cc79SPeter Korsgaard when reading from FAT (for Falcon mode) 3308 7ad2cc79SPeter Korsgaard 3309 06f60ae3SScott Wood CONFIG_SPL_MPC83XX_WAIT_FOR_NAND 3310 06f60ae3SScott Wood Set this for NAND SPL on PPC mpc83xx targets, so that 3311 06f60ae3SScott Wood start.S waits for the rest of the SPL to load before 3312 06f60ae3SScott Wood continuing (the hardware starts execution after just 3313 06f60ae3SScott Wood loading the first page rather than the full 4K). 3314 06f60ae3SScott Wood 3315 6f2f01b9SScott Wood CONFIG_SPL_NAND_BASE 3316 6f2f01b9SScott Wood Include nand_base.c in the SPL. Requires 3317 6f2f01b9SScott Wood CONFIG_SPL_NAND_DRIVERS. 3318 6f2f01b9SScott Wood 3319 6f2f01b9SScott Wood CONFIG_SPL_NAND_DRIVERS 3320 6f2f01b9SScott Wood SPL uses normal NAND drivers, not minimal drivers. 3321 6f2f01b9SScott Wood 3322 6f2f01b9SScott Wood CONFIG_SPL_NAND_ECC 3323 6f2f01b9SScott Wood Include standard software ECC in the SPL 3324 6f2f01b9SScott Wood 3325 95579793STom Rini CONFIG_SPL_NAND_SIMPLE 3326 7d4b7955SScott Wood Support for NAND boot using simple NAND drivers that 3327 7d4b7955SScott Wood expose the cmd_ctrl() interface. 3328 95579793STom Rini 3329 *6dd3b566STom Rini CONFIG_SPL_MTD_SUPPORT 3330 *6dd3b566STom Rini Support for the MTD subsystem within SPL. Useful for 3331 *6dd3b566STom Rini environment on NAND support within SPL. 3332 *6dd3b566STom Rini 3333 bb0dc108SYing Zhang CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT 3334 bb0dc108SYing Zhang Set for the SPL on PPC mpc8xxx targets, support for 3335 5614e71bSYork Sun drivers/ddr/fsl/libddr.o in SPL binary. 3336 bb0dc108SYing Zhang 3337 7c8eea59SYing Zhang CONFIG_SPL_COMMON_INIT_DDR 3338 7c8eea59SYing Zhang Set for common ddr init with serial presence detect in 3339 7c8eea59SYing Zhang SPL binary. 3340 7c8eea59SYing Zhang 3341 95579793STom Rini CONFIG_SYS_NAND_5_ADDR_CYCLE, CONFIG_SYS_NAND_PAGE_COUNT, 3342 95579793STom Rini CONFIG_SYS_NAND_PAGE_SIZE, CONFIG_SYS_NAND_OOBSIZE, 3343 95579793STom Rini CONFIG_SYS_NAND_BLOCK_SIZE, CONFIG_SYS_NAND_BAD_BLOCK_POS, 3344 95579793STom Rini CONFIG_SYS_NAND_ECCPOS, CONFIG_SYS_NAND_ECCSIZE, 3345 95579793STom Rini CONFIG_SYS_NAND_ECCBYTES 3346 95579793STom Rini Defines the size and behavior of the NAND that SPL uses 3347 7d4b7955SScott Wood to read U-Boot 3348 95579793STom Rini 3349 fbe76ae4SPrabhakar Kushwaha CONFIG_SPL_NAND_BOOT 3350 fbe76ae4SPrabhakar Kushwaha Add support NAND boot 3351 fbe76ae4SPrabhakar Kushwaha 3352 95579793STom Rini CONFIG_SYS_NAND_U_BOOT_OFFS 3353 7d4b7955SScott Wood Location in NAND to read U-Boot from 3354 7d4b7955SScott Wood 3355 7d4b7955SScott Wood CONFIG_SYS_NAND_U_BOOT_DST 3356 7d4b7955SScott Wood Location in memory to load U-Boot to 3357 7d4b7955SScott Wood 3358 7d4b7955SScott Wood CONFIG_SYS_NAND_U_BOOT_SIZE 3359 7d4b7955SScott Wood Size of image to load 3360 95579793STom Rini 3361 95579793STom Rini CONFIG_SYS_NAND_U_BOOT_START 3362 7d4b7955SScott Wood Entry point in loaded image to jump to 3363 95579793STom Rini 3364 95579793STom Rini CONFIG_SYS_NAND_HW_ECC_OOBFIRST 3365 95579793STom Rini Define this if you need to first read the OOB and then the 3366 95579793STom Rini data. This is used for example on davinci plattforms. 3367 95579793STom Rini 3368 95579793STom Rini CONFIG_SPL_OMAP3_ID_NAND 3369 95579793STom Rini Support for an OMAP3-specific set of functions to return the 3370 95579793STom Rini ID and MFR of the first attached NAND chip, if present. 3371 95579793STom Rini 3372 6a11cf48SDaniel Schwierzeck CONFIG_SPL_SERIAL_SUPPORT 3373 6a11cf48SDaniel Schwierzeck Support for drivers/serial/libserial.o in SPL binary 3374 6a11cf48SDaniel Schwierzeck 3375 6a11cf48SDaniel Schwierzeck CONFIG_SPL_SPI_FLASH_SUPPORT 3376 6a11cf48SDaniel Schwierzeck Support for drivers/mtd/spi/libspi_flash.o in SPL binary 3377 6a11cf48SDaniel Schwierzeck 3378 6a11cf48SDaniel Schwierzeck CONFIG_SPL_SPI_SUPPORT 3379 6a11cf48SDaniel Schwierzeck Support for drivers/spi/libspi.o in SPL binary 3380 6a11cf48SDaniel Schwierzeck 3381 c57b953dSPavel Machek CONFIG_SPL_RAM_DEVICE 3382 c57b953dSPavel Machek Support for running image already present in ram, in SPL binary 3383 c57b953dSPavel Machek 3384 6a11cf48SDaniel Schwierzeck CONFIG_SPL_LIBGENERIC_SUPPORT 3385 6a11cf48SDaniel Schwierzeck Support for lib/libgeneric.o in SPL binary 3386 1372cce2SMarian Balakowicz 3387 ba1bee43SYing Zhang CONFIG_SPL_ENV_SUPPORT 3388 ba1bee43SYing Zhang Support for the environment operating in SPL binary 3389 ba1bee43SYing Zhang 3390 ba1bee43SYing Zhang CONFIG_SPL_NET_SUPPORT 3391 ba1bee43SYing Zhang Support for the net/libnet.o in SPL binary. 3392 ba1bee43SYing Zhang It conflicts with SPL env from storage medium specified by 3393 ba1bee43SYing Zhang CONFIG_ENV_IS_xxx but CONFIG_ENV_IS_NOWHERE 3394 ba1bee43SYing Zhang 3395 74752baaSScott Wood CONFIG_SPL_PAD_TO 3396 6113d3f2SBenoît Thébaudeau Image offset to which the SPL should be padded before appending 3397 6113d3f2SBenoît Thébaudeau the SPL payload. By default, this is defined as 3398 6113d3f2SBenoît Thébaudeau CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined. 3399 6113d3f2SBenoît Thébaudeau CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL 3400 6113d3f2SBenoît Thébaudeau payload without any padding, or >= CONFIG_SPL_MAX_SIZE. 3401 74752baaSScott Wood 3402 ca2fca22SScott Wood CONFIG_SPL_TARGET 3403 ca2fca22SScott Wood Final target image containing SPL and payload. Some SPLs 3404 ca2fca22SScott Wood use an arch-specific makefile fragment instead, for 3405 ca2fca22SScott Wood example if more than one image needs to be produced. 3406 ca2fca22SScott Wood 3407 87ebee39SSimon Glass CONFIG_FIT_SPL_PRINT 3408 87ebee39SSimon Glass Printing information about a FIT image adds quite a bit of 3409 87ebee39SSimon Glass code to SPL. So this is normally disabled in SPL. Use this 3410 87ebee39SSimon Glass option to re-enable it. This will affect the output of the 3411 87ebee39SSimon Glass bootm command when booting a FIT image. 3412 87ebee39SSimon Glass 3413 3aa29de0SYing Zhang- TPL framework 3414 3aa29de0SYing Zhang CONFIG_TPL 3415 3aa29de0SYing Zhang Enable building of TPL globally. 3416 3aa29de0SYing Zhang 3417 3aa29de0SYing Zhang CONFIG_TPL_PAD_TO 3418 3aa29de0SYing Zhang Image offset to which the TPL should be padded before appending 3419 3aa29de0SYing Zhang the TPL payload. By default, this is defined as 3420 3aa29de0SYing Zhang CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined. 3421 3aa29de0SYing Zhang CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL 3422 3aa29de0SYing Zhang payload without any padding, or >= CONFIG_SPL_MAX_SIZE. 3423 3aa29de0SYing Zhang 3424 c609719bSwdenkModem Support: 3425 c609719bSwdenk-------------- 3426 c609719bSwdenk 3427 566e5cf4SWolfgang Denk[so far only for SMDK2400 boards] 3428 c609719bSwdenk 3429 11ccc33fSMarcel Ziswiler- Modem support enable: 3430 c609719bSwdenk CONFIG_MODEM_SUPPORT 3431 c609719bSwdenk 3432 c609719bSwdenk- RTS/CTS Flow control enable: 3433 c609719bSwdenk CONFIG_HWFLOW 3434 c609719bSwdenk 3435 c609719bSwdenk- Modem debug support: 3436 c609719bSwdenk CONFIG_MODEM_SUPPORT_DEBUG 3437 c609719bSwdenk 3438 c609719bSwdenk Enables debugging stuff (char screen[1024], dbg()) 3439 c609719bSwdenk for modem support. Useful only with BDI2000. 3440 c609719bSwdenk 3441 a8c7c708Swdenk- Interrupt support (PPC): 3442 a8c7c708Swdenk 3443 a8c7c708Swdenk There are common interrupt_init() and timer_interrupt() 3444 a8c7c708Swdenk for all PPC archs. interrupt_init() calls interrupt_init_cpu() 3445 11ccc33fSMarcel Ziswiler for CPU specific initialization. interrupt_init_cpu() 3446 a8c7c708Swdenk should set decrementer_count to appropriate value. If 3447 11ccc33fSMarcel Ziswiler CPU resets decrementer automatically after interrupt 3448 a8c7c708Swdenk (ppc4xx) it should set decrementer_count to zero. 3449 11ccc33fSMarcel Ziswiler timer_interrupt() calls timer_interrupt_cpu() for CPU 3450 a8c7c708Swdenk specific handling. If board has watchdog / status_led 3451 a8c7c708Swdenk / other_activity_monitor it works automatically from 3452 a8c7c708Swdenk general timer_interrupt(). 3453 a8c7c708Swdenk 3454 c609719bSwdenk- General: 3455 c609719bSwdenk 3456 c609719bSwdenk In the target system modem support is enabled when a 3457 c609719bSwdenk specific key (key combination) is pressed during 3458 c609719bSwdenk power-on. Otherwise U-Boot will boot normally 3459 11ccc33fSMarcel Ziswiler (autoboot). The key_pressed() function is called from 3460 c609719bSwdenk board_init(). Currently key_pressed() is a dummy 3461 c609719bSwdenk function, returning 1 and thus enabling modem 3462 c609719bSwdenk initialization. 3463 c609719bSwdenk 3464 c609719bSwdenk If there are no modem init strings in the 3465 c609719bSwdenk environment, U-Boot proceed to autoboot; the 3466 c609719bSwdenk previous output (banner, info printfs) will be 3467 11ccc33fSMarcel Ziswiler suppressed, though. 3468 c609719bSwdenk 3469 c609719bSwdenk See also: doc/README.Modem 3470 c609719bSwdenk 3471 9660e442SHelmut RaigerBoard initialization settings: 3472 9660e442SHelmut Raiger------------------------------ 3473 9660e442SHelmut Raiger 3474 9660e442SHelmut RaigerDuring Initialization u-boot calls a number of board specific functions 3475 9660e442SHelmut Raigerto allow the preparation of board specific prerequisites, e.g. pin setup 3476 9660e442SHelmut Raigerbefore drivers are initialized. To enable these callbacks the 3477 9660e442SHelmut Raigerfollowing configuration macros have to be defined. Currently this is 3478 9660e442SHelmut Raigerarchitecture specific, so please check arch/your_architecture/lib/board.c 3479 9660e442SHelmut Raigertypically in board_init_f() and board_init_r(). 3480 9660e442SHelmut Raiger 3481 9660e442SHelmut Raiger- CONFIG_BOARD_EARLY_INIT_F: Call board_early_init_f() 3482 9660e442SHelmut Raiger- CONFIG_BOARD_EARLY_INIT_R: Call board_early_init_r() 3483 9660e442SHelmut Raiger- CONFIG_BOARD_LATE_INIT: Call board_late_init() 3484 9660e442SHelmut Raiger- CONFIG_BOARD_POSTCLK_INIT: Call board_postclk_init() 3485 c609719bSwdenk 3486 c609719bSwdenkConfiguration Settings: 3487 c609719bSwdenk----------------------- 3488 c609719bSwdenk 3489 4d1fd7f1SYork Sun- CONFIG_SYS_SUPPORT_64BIT_DATA: Defined automatically if compiled as 64-bit. 3490 4d1fd7f1SYork Sun Optionally it can be defined to support 64-bit memory commands. 3491 4d1fd7f1SYork Sun 3492 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_LONGHELP: Defined when you want long help messages included; 3493 c609719bSwdenk undefine this when you're short of memory. 3494 c609719bSwdenk 3495 2fb2604dSPeter Tyser- CONFIG_SYS_HELP_CMD_WIDTH: Defined when you want to override the default 3496 2fb2604dSPeter Tyser width of the commands listed in the 'help' command output. 3497 2fb2604dSPeter Tyser 3498 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PROMPT: This is what U-Boot prints on the console to 3499 c609719bSwdenk prompt for user input. 3500 c609719bSwdenk 3501 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CBSIZE: Buffer size for input from the Console 3502 c609719bSwdenk 3503 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PBSIZE: Buffer size for Console output 3504 c609719bSwdenk 3505 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAXARGS: max. Number of arguments accepted for monitor commands 3506 c609719bSwdenk 3507 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BARGSIZE: Buffer size for Boot Arguments which are passed to 3508 c609719bSwdenk the application (usually a Linux kernel) when it is 3509 c609719bSwdenk booted 3510 c609719bSwdenk 3511 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BAUDRATE_TABLE: 3512 c609719bSwdenk List of legal baudrate settings for this board. 3513 c609719bSwdenk 3514 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_INFO_QUIET 3515 c609719bSwdenk Suppress display of console information at boot. 3516 c609719bSwdenk 3517 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_IS_IN_ENV 3518 c609719bSwdenk If the board specific function 3519 c609719bSwdenk extern int overwrite_console (void); 3520 c609719bSwdenk returns 1, the stdin, stderr and stdout are switched to the 3521 c609719bSwdenk serial port, else the settings in the environment are used. 3522 c609719bSwdenk 3523 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE 3524 c609719bSwdenk Enable the call to overwrite_console(). 3525 c609719bSwdenk 3526 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CONSOLE_ENV_OVERWRITE 3527 c609719bSwdenk Enable overwrite of previous console environment settings. 3528 c609719bSwdenk 3529 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEMTEST_START, CONFIG_SYS_MEMTEST_END: 3530 c609719bSwdenk Begin and End addresses of the area used by the 3531 c609719bSwdenk simple memory test. 3532 c609719bSwdenk 3533 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_ALT_MEMTEST: 3534 c609719bSwdenk Enable an alternate, more extensive memory test. 3535 c609719bSwdenk 3536 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEMTEST_SCRATCH: 3537 5f535fe1Swdenk Scratch address used by the alternate memory test 3538 5f535fe1Swdenk You only need to set this if address zero isn't writeable 3539 5f535fe1Swdenk 3540 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MEM_TOP_HIDE (PPC only): 3541 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD If CONFIG_SYS_MEM_TOP_HIDE is defined in the board config header, 3542 14f73ca6SStefan Roese this specified memory area will get subtracted from the top 3543 11ccc33fSMarcel Ziswiler (end) of RAM and won't get "touched" at all by U-Boot. By 3544 14f73ca6SStefan Roese fixing up gd->ram_size the Linux kernel should gets passed 3545 14f73ca6SStefan Roese the now "corrected" memory size and won't touch it either. 3546 14f73ca6SStefan Roese This should work for arch/ppc and arch/powerpc. Only Linux 3547 5e12e75dSStefan Roese board ports in arch/powerpc with bootwrapper support that 3548 14f73ca6SStefan Roese recalculate the memory size from the SDRAM controller setup 3549 5e12e75dSStefan Roese will have to get fixed in Linux additionally. 3550 14f73ca6SStefan Roese 3551 14f73ca6SStefan Roese This option can be used as a workaround for the 440EPx/GRx 3552 14f73ca6SStefan Roese CHIP 11 errata where the last 256 bytes in SDRAM shouldn't 3553 14f73ca6SStefan Roese be touched. 3554 14f73ca6SStefan Roese 3555 14f73ca6SStefan Roese WARNING: Please make sure that this value is a multiple of 3556 14f73ca6SStefan Roese the Linux page size (normally 4k). If this is not the case, 3557 14f73ca6SStefan Roese then the end address of the Linux memory will be located at a 3558 14f73ca6SStefan Roese non page size aligned address and this could cause major 3559 14f73ca6SStefan Roese problems. 3560 14f73ca6SStefan Roese 3561 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_LOADS_BAUD_CHANGE: 3562 c609719bSwdenk Enable temporary baudrate change while serial download 3563 c609719bSwdenk 3564 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SDRAM_BASE: 3565 c609719bSwdenk Physical start address of SDRAM. _Must_ be 0 here. 3566 c609719bSwdenk 3567 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MBIO_BASE: 3568 c609719bSwdenk Physical start address of Motherboard I/O (if using a 3569 c609719bSwdenk Cogent motherboard) 3570 c609719bSwdenk 3571 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_BASE: 3572 c609719bSwdenk Physical start address of Flash memory. 3573 c609719bSwdenk 3574 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MONITOR_BASE: 3575 c609719bSwdenk Physical start address of boot monitor code (set by 3576 c609719bSwdenk make config files to be same as the text base address 3577 14d0a02aSWolfgang Denk (CONFIG_SYS_TEXT_BASE) used when linking) - same as 3578 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FLASH_BASE when booting from flash. 3579 c609719bSwdenk 3580 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MONITOR_LEN: 3581 3b57fe0aSwdenk Size of memory reserved for monitor code, used to 3582 3b57fe0aSwdenk determine _at_compile_time_ (!) if the environment is 3583 3b57fe0aSwdenk embedded within the U-Boot image, or in a separate 3584 3b57fe0aSwdenk flash sector. 3585 c609719bSwdenk 3586 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MALLOC_LEN: 3587 c609719bSwdenk Size of DRAM reserved for malloc() use. 3588 c609719bSwdenk 3589 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BOOTM_LEN: 3590 15940c9aSStefan Roese Normally compressed uImages are limited to an 3591 15940c9aSStefan Roese uncompressed size of 8 MBytes. If this is not enough, 3592 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD you can define CONFIG_SYS_BOOTM_LEN in your board config file 3593 15940c9aSStefan Roese to adjust this setting to your needs. 3594 c609719bSwdenk 3595 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_BOOTMAPSZ: 3596 c609719bSwdenk Maximum size of memory mapped by the startup code of 3597 c609719bSwdenk the Linux kernel; all data that must be processed by 3598 7d721e34SBartlomiej Sieka the Linux kernel (bd_info, boot arguments, FDT blob if 3599 7d721e34SBartlomiej Sieka used) must be put below this limit, unless "bootm_low" 3600 1bce2aebSRobert P. J. Day environment variable is defined and non-zero. In such case 3601 7d721e34SBartlomiej Sieka all data for the Linux kernel must be between "bootm_low" 3602 c3624e6eSGrant Likely and "bootm_low" + CONFIG_SYS_BOOTMAPSZ. The environment 3603 c3624e6eSGrant Likely variable "bootm_mapsize" will override the value of 3604 c3624e6eSGrant Likely CONFIG_SYS_BOOTMAPSZ. If CONFIG_SYS_BOOTMAPSZ is undefined, 3605 c3624e6eSGrant Likely then the value in "bootm_size" will be used instead. 3606 c609719bSwdenk 3607 fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_RAMDISK_HIGH: 3608 fca43cc8SJohn Rigby Enable initrd_high functionality. If defined then the 3609 fca43cc8SJohn Rigby initrd_high feature is enabled and the bootm ramdisk subcommand 3610 fca43cc8SJohn Rigby is enabled. 3611 fca43cc8SJohn Rigby 3612 fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_GET_CMDLINE: 3613 fca43cc8SJohn Rigby Enables allocating and saving kernel cmdline in space between 3614 fca43cc8SJohn Rigby "bootm_low" and "bootm_low" + BOOTMAPSZ. 3615 fca43cc8SJohn Rigby 3616 fca43cc8SJohn Rigby- CONFIG_SYS_BOOT_GET_KBD: 3617 fca43cc8SJohn Rigby Enables allocating and saving a kernel copy of the bd_info in 3618 fca43cc8SJohn Rigby space between "bootm_low" and "bootm_low" + BOOTMAPSZ. 3619 fca43cc8SJohn Rigby 3620 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAX_FLASH_BANKS: 3621 c609719bSwdenk Max number of Flash memory banks 3622 c609719bSwdenk 3623 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAX_FLASH_SECT: 3624 c609719bSwdenk Max number of sectors on a Flash chip 3625 c609719bSwdenk 3626 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_ERASE_TOUT: 3627 c609719bSwdenk Timeout for Flash erase operations (in ms) 3628 c609719bSwdenk 3629 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_WRITE_TOUT: 3630 c609719bSwdenk Timeout for Flash write operations (in ms) 3631 c609719bSwdenk 3632 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_LOCK_TOUT 3633 8564acf9Swdenk Timeout for Flash set sector lock bit operation (in ms) 3634 8564acf9Swdenk 3635 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_UNLOCK_TOUT 3636 8564acf9Swdenk Timeout for Flash clear lock bits operation (in ms) 3637 8564acf9Swdenk 3638 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_PROTECTION 3639 8564acf9Swdenk If defined, hardware flash sectors protection is used 3640 8564acf9Swdenk instead of U-Boot software protection. 3641 8564acf9Swdenk 3642 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DIRECT_FLASH_TFTP: 3643 c609719bSwdenk 3644 c609719bSwdenk Enable TFTP transfers directly to flash memory; 3645 c609719bSwdenk without this option such a download has to be 3646 c609719bSwdenk performed in two steps: (1) download to RAM, and (2) 3647 c609719bSwdenk copy from RAM to flash. 3648 c609719bSwdenk 3649 c609719bSwdenk The two-step approach is usually more reliable, since 3650 c609719bSwdenk you can check if the download worked before you erase 3651 11ccc33fSMarcel Ziswiler the flash, but in some situations (when system RAM is 3652 11ccc33fSMarcel Ziswiler too limited to allow for a temporary copy of the 3653 c609719bSwdenk downloaded image) this option may be very useful. 3654 c609719bSwdenk 3655 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_CFI: 3656 c609719bSwdenk Define if the flash driver uses extra elements in the 3657 5653fc33Swdenk common flash structure for storing flash geometry. 3658 5653fc33Swdenk 3659 00b1883aSJean-Christophe PLAGNIOL-VILLARD- CONFIG_FLASH_CFI_DRIVER 3660 5653fc33Swdenk This option also enables the building of the cfi_flash driver 3661 5653fc33Swdenk in the drivers directory 3662 53cf9435Sstroese 3663 91809ed5SPiotr Ziecik- CONFIG_FLASH_CFI_MTD 3664 91809ed5SPiotr Ziecik This option enables the building of the cfi_mtd driver 3665 91809ed5SPiotr Ziecik in the drivers directory. The driver exports CFI flash 3666 91809ed5SPiotr Ziecik to the MTD layer. 3667 91809ed5SPiotr Ziecik 3668 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_USE_BUFFER_WRITE 3669 96ef831fSGuennadi Liakhovetski Use buffered writes to flash. 3670 96ef831fSGuennadi Liakhovetski 3671 96ef831fSGuennadi Liakhovetski- CONFIG_FLASH_SPANSION_S29WS_N 3672 96ef831fSGuennadi Liakhovetski s29ws-n MirrorBit flash has non-standard addresses for buffered 3673 96ef831fSGuennadi Liakhovetski write commands. 3674 96ef831fSGuennadi Liakhovetski 3675 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FLASH_QUIET_TEST 3676 5568e613SStefan Roese If this option is defined, the common CFI flash doesn't 3677 5568e613SStefan Roese print it's warning upon not recognized FLASH banks. This 3678 5568e613SStefan Roese is useful, if some of the configured banks are only 3679 5568e613SStefan Roese optionally available. 3680 5568e613SStefan Roese 3681 9a042e9cSJerry Van Baren- CONFIG_FLASH_SHOW_PROGRESS 3682 9a042e9cSJerry Van Baren If defined (must be an integer), print out countdown 3683 9a042e9cSJerry Van Baren digits and dots. Recommended value: 45 (9..1) for 80 3684 9a042e9cSJerry Van Baren column displays, 15 (3..1) for 40 column displays. 3685 9a042e9cSJerry Van Baren 3686 352ef3f1SStefan Roese- CONFIG_FLASH_VERIFY 3687 352ef3f1SStefan Roese If defined, the content of the flash (destination) is compared 3688 352ef3f1SStefan Roese against the source after the write operation. An error message 3689 352ef3f1SStefan Roese will be printed when the contents are not identical. 3690 352ef3f1SStefan Roese Please note that this option is useless in nearly all cases, 3691 352ef3f1SStefan Roese since such flash programming errors usually are detected earlier 3692 352ef3f1SStefan Roese while unprotecting/erasing/programming. Please only enable 3693 352ef3f1SStefan Roese this option if you really know what you are doing. 3694 352ef3f1SStefan Roese 3695 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_RX_ETH_BUFFER: 3696 11ccc33fSMarcel Ziswiler Defines the number of Ethernet receive buffers. On some 3697 11ccc33fSMarcel Ziswiler Ethernet controllers it is recommended to set this value 3698 53cf9435Sstroese to 8 or even higher (EEPRO100 or 405 EMAC), since all 3699 53cf9435Sstroese buffers can be full shortly after enabling the interface 3700 11ccc33fSMarcel Ziswiler on high Ethernet traffic. 3701 53cf9435Sstroese Defaults to 4 if not defined. 3702 c609719bSwdenk 3703 ea882bafSWolfgang Denk- CONFIG_ENV_MAX_ENTRIES 3704 ea882bafSWolfgang Denk 3705 ea882bafSWolfgang Denk Maximum number of entries in the hash table that is used 3706 ea882bafSWolfgang Denk internally to store the environment settings. The default 3707 ea882bafSWolfgang Denk setting is supposed to be generous and should work in most 3708 ea882bafSWolfgang Denk cases. This setting can be used to tune behaviour; see 3709 ea882bafSWolfgang Denk lib/hashtable.c for details. 3710 ea882bafSWolfgang Denk 3711 2598090bSJoe Hershberger- CONFIG_ENV_FLAGS_LIST_DEFAULT 3712 2598090bSJoe Hershberger- CONFIG_ENV_FLAGS_LIST_STATIC 3713 1bce2aebSRobert P. J. Day Enable validation of the values given to environment variables when 3714 2598090bSJoe Hershberger calling env set. Variables can be restricted to only decimal, 3715 2598090bSJoe Hershberger hexadecimal, or boolean. If CONFIG_CMD_NET is also defined, 3716 2598090bSJoe Hershberger the variables can also be restricted to IP address or MAC address. 3717 2598090bSJoe Hershberger 3718 2598090bSJoe Hershberger The format of the list is: 3719 2598090bSJoe Hershberger type_attribute = [s|d|x|b|i|m] 3720 267541f7SJoe Hershberger access_atribute = [a|r|o|c] 3721 267541f7SJoe Hershberger attributes = type_attribute[access_atribute] 3722 2598090bSJoe Hershberger entry = variable_name[:attributes] 3723 2598090bSJoe Hershberger list = entry[,list] 3724 2598090bSJoe Hershberger 3725 2598090bSJoe Hershberger The type attributes are: 3726 2598090bSJoe Hershberger s - String (default) 3727 2598090bSJoe Hershberger d - Decimal 3728 2598090bSJoe Hershberger x - Hexadecimal 3729 2598090bSJoe Hershberger b - Boolean ([1yYtT|0nNfF]) 3730 2598090bSJoe Hershberger i - IP address 3731 2598090bSJoe Hershberger m - MAC address 3732 2598090bSJoe Hershberger 3733 267541f7SJoe Hershberger The access attributes are: 3734 267541f7SJoe Hershberger a - Any (default) 3735 267541f7SJoe Hershberger r - Read-only 3736 267541f7SJoe Hershberger o - Write-once 3737 267541f7SJoe Hershberger c - Change-default 3738 267541f7SJoe Hershberger 3739 2598090bSJoe Hershberger - CONFIG_ENV_FLAGS_LIST_DEFAULT 3740 2598090bSJoe Hershberger Define this to a list (string) to define the ".flags" 3741 2598090bSJoe Hershberger envirnoment variable in the default or embedded environment. 3742 2598090bSJoe Hershberger 3743 2598090bSJoe Hershberger - CONFIG_ENV_FLAGS_LIST_STATIC 3744 2598090bSJoe Hershberger Define this to a list (string) to define validation that 3745 2598090bSJoe Hershberger should be done if an entry is not found in the ".flags" 3746 2598090bSJoe Hershberger environment variable. To override a setting in the static 3747 2598090bSJoe Hershberger list, simply add an entry for the same variable name to the 3748 2598090bSJoe Hershberger ".flags" variable. 3749 2598090bSJoe Hershberger 3750 267541f7SJoe Hershberger- CONFIG_ENV_ACCESS_IGNORE_FORCE 3751 267541f7SJoe Hershberger If defined, don't allow the -f switch to env set override variable 3752 267541f7SJoe Hershberger access flags. 3753 267541f7SJoe Hershberger 3754 5c1a7ea6SSimon Glass- CONFIG_SYS_GENERIC_BOARD 3755 5c1a7ea6SSimon Glass This selects the architecture-generic board system instead of the 3756 5c1a7ea6SSimon Glass architecture-specific board files. It is intended to move boards 3757 5c1a7ea6SSimon Glass to this new framework over time. Defining this will disable the 3758 5c1a7ea6SSimon Glass arch/foo/lib/board.c file and use common/board_f.c and 3759 5c1a7ea6SSimon Glass common/board_r.c instead. To use this option your architecture 3760 5c1a7ea6SSimon Glass must support it (i.e. must define __HAVE_ARCH_GENERIC_BOARD in 3761 5c1a7ea6SSimon Glass its config.mk file). If you find problems enabling this option on 3762 5c1a7ea6SSimon Glass your board please report the problem and send patches! 3763 5c1a7ea6SSimon Glass 3764 0b1b60c7SLokesh Vutla- CONFIG_OMAP_PLATFORM_RESET_TIME_MAX_USEC (OMAP only) 3765 0b1b60c7SLokesh Vutla This is set by OMAP boards for the max time that reset should 3766 0b1b60c7SLokesh Vutla be asserted. See doc/README.omap-reset-time for details on how 3767 0b1b60c7SLokesh Vutla the value can be calulated on a given board. 3768 632efa74SSimon Glass 3769 c609719bSwdenkThe following definitions that deal with the placement and management 3770 c609719bSwdenkof environment data (variable area); in general, we support the 3771 c609719bSwdenkfollowing configurations: 3772 c609719bSwdenk 3773 c3eb3fe4SMike Frysinger- CONFIG_BUILD_ENVCRC: 3774 c3eb3fe4SMike Frysinger 3775 c3eb3fe4SMike Frysinger Builds up envcrc with the target environment so that external utils 3776 c3eb3fe4SMike Frysinger may easily extract it and embed it in final U-Boot images. 3777 c3eb3fe4SMike Frysinger 3778 5a1aceb0SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_FLASH: 3779 c609719bSwdenk 3780 c609719bSwdenk Define this if the environment is in flash memory. 3781 c609719bSwdenk 3782 c609719bSwdenk a) The environment occupies one whole flash sector, which is 3783 c609719bSwdenk "embedded" in the text segment with the U-Boot code. This 3784 c609719bSwdenk happens usually with "bottom boot sector" or "top boot 3785 c609719bSwdenk sector" type flash chips, which have several smaller 3786 c609719bSwdenk sectors at the start or the end. For instance, such a 3787 c609719bSwdenk layout can have sector sizes of 8, 2x4, 16, Nx32 kB. In 3788 c609719bSwdenk such a case you would place the environment in one of the 3789 c609719bSwdenk 4 kB sectors - with U-Boot code before and after it. With 3790 c609719bSwdenk "top boot sector" type flash chips, you would put the 3791 c609719bSwdenk environment in one of the last sectors, leaving a gap 3792 c609719bSwdenk between U-Boot and the environment. 3793 c609719bSwdenk 3794 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 3795 c609719bSwdenk 3796 c609719bSwdenk Offset of environment data (variable area) to the 3797 c609719bSwdenk beginning of flash memory; for instance, with bottom boot 3798 c609719bSwdenk type flash chips the second sector can be used: the offset 3799 c609719bSwdenk for this sector is given here. 3800 c609719bSwdenk 3801 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_OFFSET is used relative to CONFIG_SYS_FLASH_BASE. 3802 c609719bSwdenk 3803 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 3804 c609719bSwdenk 3805 c609719bSwdenk This is just another way to specify the start address of 3806 c609719bSwdenk the flash sector containing the environment (instead of 3807 0e8d1586SJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_OFFSET). 3808 c609719bSwdenk 3809 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SECT_SIZE: 3810 c609719bSwdenk 3811 c609719bSwdenk Size of the sector containing the environment. 3812 c609719bSwdenk 3813 c609719bSwdenk 3814 c609719bSwdenk b) Sometimes flash chips have few, equal sized, BIG sectors. 3815 c609719bSwdenk In such a case you don't want to spend a whole sector for 3816 c609719bSwdenk the environment. 3817 c609719bSwdenk 3818 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 3819 c609719bSwdenk 3820 5a1aceb0SJean-Christophe PLAGNIOL-VILLARD If you use this in combination with CONFIG_ENV_IS_IN_FLASH 3821 0e8d1586SJean-Christophe PLAGNIOL-VILLARD and CONFIG_ENV_SECT_SIZE, you can specify to use only a part 3822 c609719bSwdenk of this flash sector for the environment. This saves 3823 c609719bSwdenk memory for the RAM copy of the environment. 3824 c609719bSwdenk 3825 c609719bSwdenk It may also save flash memory if you decide to use this 3826 c609719bSwdenk when your environment is "embedded" within U-Boot code, 3827 c609719bSwdenk since then the remainder of the flash sector could be used 3828 c609719bSwdenk for U-Boot code. It should be pointed out that this is 3829 c609719bSwdenk STRONGLY DISCOURAGED from a robustness point of view: 3830 c609719bSwdenk updating the environment in flash makes it always 3831 c609719bSwdenk necessary to erase the WHOLE sector. If something goes 3832 c609719bSwdenk wrong before the contents has been restored from a copy in 3833 c609719bSwdenk RAM, your target system will be dead. 3834 c609719bSwdenk 3835 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR_REDUND 3836 0e8d1586SJean-Christophe PLAGNIOL-VILLARD CONFIG_ENV_SIZE_REDUND 3837 c609719bSwdenk 3838 c609719bSwdenk These settings describe a second storage area used to hold 3839 11ccc33fSMarcel Ziswiler a redundant copy of the environment data, so that there is 3840 3e38691eSwdenk a valid backup copy in case there is a power failure during 3841 c609719bSwdenk a "saveenv" operation. 3842 c609719bSwdenk 3843 c609719bSwdenkBE CAREFUL! Any changes to the flash layout, and some changes to the 3844 c609719bSwdenksource code will make it necessary to adapt <board>/u-boot.lds* 3845 c609719bSwdenkaccordingly! 3846 c609719bSwdenk 3847 c609719bSwdenk 3848 9314cee6SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_NVRAM: 3849 c609719bSwdenk 3850 c609719bSwdenk Define this if you have some non-volatile memory device 3851 c609719bSwdenk (NVRAM, battery buffered SRAM) which you want to use for the 3852 c609719bSwdenk environment. 3853 c609719bSwdenk 3854 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 3855 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 3856 c609719bSwdenk 3857 11ccc33fSMarcel Ziswiler These two #defines are used to determine the memory area you 3858 c609719bSwdenk want to use for environment. It is assumed that this memory 3859 c609719bSwdenk can just be read and written to, without any special 3860 c609719bSwdenk provision. 3861 c609719bSwdenk 3862 c609719bSwdenkBE CAREFUL! The first access to the environment happens quite early 3863 c609719bSwdenkin U-Boot initalization (when we try to get the setting of for the 3864 11ccc33fSMarcel Ziswilerconsole baudrate). You *MUST* have mapped your NVRAM area then, or 3865 c609719bSwdenkU-Boot will hang. 3866 c609719bSwdenk 3867 c609719bSwdenkPlease note that even with NVRAM we still use a copy of the 3868 c609719bSwdenkenvironment in RAM: we could work on NVRAM directly, but we want to 3869 c609719bSwdenkkeep settings there always unmodified except somebody uses "saveenv" 3870 c609719bSwdenkto save the current settings. 3871 c609719bSwdenk 3872 c609719bSwdenk 3873 bb1f8b4fSJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_EEPROM: 3874 c609719bSwdenk 3875 c609719bSwdenk Use this if you have an EEPROM or similar serial access 3876 c609719bSwdenk device and a driver for it. 3877 c609719bSwdenk 3878 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 3879 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 3880 c609719bSwdenk 3881 c609719bSwdenk These two #defines specify the offset and size of the 3882 c609719bSwdenk environment area within the total memory of your EEPROM. 3883 c609719bSwdenk 3884 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR: 3885 c609719bSwdenk If defined, specified the chip address of the EEPROM device. 3886 c609719bSwdenk The default address is zero. 3887 c609719bSwdenk 3888 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_PAGE_WRITE_BITS: 3889 c609719bSwdenk If defined, the number of bits used to address bytes in a 3890 c609719bSwdenk single page in the EEPROM device. A 64 byte page, for example 3891 c609719bSwdenk would require six bits. 3892 c609719bSwdenk 3893 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS: 3894 c609719bSwdenk If defined, the number of milliseconds to delay between 3895 c609719bSwdenk page writes. The default is zero milliseconds. 3896 c609719bSwdenk 3897 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR_LEN: 3898 c609719bSwdenk The length in bytes of the EEPROM memory array address. Note 3899 c609719bSwdenk that this is NOT the chip address length! 3900 c609719bSwdenk 3901 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW: 3902 5cf91d6bSwdenk EEPROM chips that implement "address overflow" are ones 3903 5cf91d6bSwdenk like Catalyst 24WC04/08/16 which has 9/10/11 bits of 3904 5cf91d6bSwdenk address and the extra bits end up in the "chip address" bit 3905 5cf91d6bSwdenk slots. This makes a 24WC08 (1Kbyte) chip look like four 256 3906 5cf91d6bSwdenk byte chips. 3907 5cf91d6bSwdenk 3908 5cf91d6bSwdenk Note that we consider the length of the address field to 3909 5cf91d6bSwdenk still be one byte because the extra address bits are hidden 3910 5cf91d6bSwdenk in the chip address. 3911 5cf91d6bSwdenk 3912 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD - CONFIG_SYS_EEPROM_SIZE: 3913 c609719bSwdenk The size in bytes of the EEPROM device. 3914 c609719bSwdenk 3915 548738b4SHeiko Schocher - CONFIG_ENV_EEPROM_IS_ON_I2C 3916 548738b4SHeiko Schocher define this, if you have I2C and SPI activated, and your 3917 548738b4SHeiko Schocher EEPROM, which holds the environment, is on the I2C bus. 3918 548738b4SHeiko Schocher 3919 548738b4SHeiko Schocher - CONFIG_I2C_ENV_EEPROM_BUS 3920 548738b4SHeiko Schocher if you have an Environment on an EEPROM reached over 3921 548738b4SHeiko Schocher I2C muxes, you can define here, how to reach this 3922 548738b4SHeiko Schocher EEPROM. For example: 3923 548738b4SHeiko Schocher 3924 ea818dbbSHeiko Schocher #define CONFIG_I2C_ENV_EEPROM_BUS 1 3925 548738b4SHeiko Schocher 3926 548738b4SHeiko Schocher EEPROM which holds the environment, is reached over 3927 548738b4SHeiko Schocher a pca9547 i2c mux with address 0x70, channel 3. 3928 c609719bSwdenk 3929 057c849cSJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_DATAFLASH: 3930 5779d8d9Swdenk 3931 5779d8d9Swdenk Define this if you have a DataFlash memory device which you 3932 5779d8d9Swdenk want to use for the environment. 3933 5779d8d9Swdenk 3934 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 3935 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_ADDR: 3936 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 3937 5779d8d9Swdenk 3938 5779d8d9Swdenk These three #defines specify the offset and size of the 3939 5779d8d9Swdenk environment area within the total memory of your DataFlash placed 3940 5779d8d9Swdenk at the specified address. 3941 5779d8d9Swdenk 3942 0a85a9e7SLiu Gang- CONFIG_ENV_IS_IN_REMOTE: 3943 0a85a9e7SLiu Gang 3944 0a85a9e7SLiu Gang Define this if you have a remote memory space which you 3945 0a85a9e7SLiu Gang want to use for the local device's environment. 3946 0a85a9e7SLiu Gang 3947 0a85a9e7SLiu Gang - CONFIG_ENV_ADDR: 3948 0a85a9e7SLiu Gang - CONFIG_ENV_SIZE: 3949 0a85a9e7SLiu Gang 3950 0a85a9e7SLiu Gang These two #defines specify the address and size of the 3951 0a85a9e7SLiu Gang environment area within the remote memory space. The 3952 0a85a9e7SLiu Gang local device can get the environment from remote memory 3953 fc54c7faSLiu Gang space by SRIO or PCIE links. 3954 0a85a9e7SLiu Gang 3955 0a85a9e7SLiu GangBE CAREFUL! For some special cases, the local device can not use 3956 0a85a9e7SLiu Gang"saveenv" command. For example, the local device will get the 3957 fc54c7faSLiu Gangenvironment stored in a remote NOR flash by SRIO or PCIE link, 3958 fc54c7faSLiu Gangbut it can not erase, write this NOR flash by SRIO or PCIE interface. 3959 0a85a9e7SLiu Gang 3960 51bfee19SJean-Christophe PLAGNIOL-VILLARD- CONFIG_ENV_IS_IN_NAND: 3961 13a5695bSwdenk 3962 13a5695bSwdenk Define this if you have a NAND device which you want to use 3963 13a5695bSwdenk for the environment. 3964 13a5695bSwdenk 3965 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_OFFSET: 3966 0e8d1586SJean-Christophe PLAGNIOL-VILLARD - CONFIG_ENV_SIZE: 3967 13a5695bSwdenk 3968 13a5695bSwdenk These two #defines specify the offset and size of the environment 3969 fdd813deSScott Wood area within the first NAND device. CONFIG_ENV_OFFSET must be 3970 fdd813deSScott Wood aligned to an erase block boundary. 3971 5779d8d9Swdenk 3972 fdd813deSScott Wood - CONFIG_ENV_OFFSET_REDUND (optional): 3973 e443c944SMarkus Klotzbuecher 3974 0e8d1586SJean-Christophe PLAGNIOL-VILLARD This setting describes a second storage area of CONFIG_ENV_SIZE 3975 fdd813deSScott Wood size used to hold a redundant copy of the environment data, so 3976 fdd813deSScott Wood that there is a valid backup copy in case there is a power failure 3977 fdd813deSScott Wood during a "saveenv" operation. CONFIG_ENV_OFFSET_RENDUND must be 3978 fdd813deSScott Wood aligned to an erase block boundary. 3979 e443c944SMarkus Klotzbuecher 3980 fdd813deSScott Wood - CONFIG_ENV_RANGE (optional): 3981 fdd813deSScott Wood 3982 fdd813deSScott Wood Specifies the length of the region in which the environment 3983 fdd813deSScott Wood can be written. This should be a multiple of the NAND device's 3984 fdd813deSScott Wood block size. Specifying a range with more erase blocks than 3985 fdd813deSScott Wood are needed to hold CONFIG_ENV_SIZE allows bad blocks within 3986 fdd813deSScott Wood the range to be avoided. 3987 fdd813deSScott Wood 3988 fdd813deSScott Wood - CONFIG_ENV_OFFSET_OOB (optional): 3989 fdd813deSScott Wood 3990 fdd813deSScott Wood Enables support for dynamically retrieving the offset of the 3991 fdd813deSScott Wood environment from block zero's out-of-band data. The 3992 fdd813deSScott Wood "nand env.oob" command can be used to record this offset. 3993 fdd813deSScott Wood Currently, CONFIG_ENV_OFFSET_REDUND is not supported when 3994 fdd813deSScott Wood using CONFIG_ENV_OFFSET_OOB. 3995 e443c944SMarkus Klotzbuecher 3996 b74ab737SGuennadi Liakhovetski- CONFIG_NAND_ENV_DST 3997 b74ab737SGuennadi Liakhovetski 3998 b74ab737SGuennadi Liakhovetski Defines address in RAM to which the nand_spl code should copy the 3999 b74ab737SGuennadi Liakhovetski environment. If redundant environment is used, it will be copied to 4000 b74ab737SGuennadi Liakhovetski CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE. 4001 b74ab737SGuennadi Liakhovetski 4002 2b74433fSJoe Hershberger- CONFIG_ENV_IS_IN_UBI: 4003 2b74433fSJoe Hershberger 4004 2b74433fSJoe Hershberger Define this if you have an UBI volume that you want to use for the 4005 2b74433fSJoe Hershberger environment. This has the benefit of wear-leveling the environment 4006 2b74433fSJoe Hershberger accesses, which is important on NAND. 4007 2b74433fSJoe Hershberger 4008 2b74433fSJoe Hershberger - CONFIG_ENV_UBI_PART: 4009 2b74433fSJoe Hershberger 4010 2b74433fSJoe Hershberger Define this to a string that is the mtd partition containing the UBI. 4011 2b74433fSJoe Hershberger 4012 2b74433fSJoe Hershberger - CONFIG_ENV_UBI_VOLUME: 4013 2b74433fSJoe Hershberger 4014 2b74433fSJoe Hershberger Define this to the name of the volume that you want to store the 4015 2b74433fSJoe Hershberger environment in. 4016 2b74433fSJoe Hershberger 4017 785881f7SJoe Hershberger - CONFIG_ENV_UBI_VOLUME_REDUND: 4018 785881f7SJoe Hershberger 4019 785881f7SJoe Hershberger Define this to the name of another volume to store a second copy of 4020 785881f7SJoe Hershberger the environment in. This will enable redundant environments in UBI. 4021 785881f7SJoe Hershberger It is assumed that both volumes are in the same MTD partition. 4022 785881f7SJoe Hershberger 4023 2b74433fSJoe Hershberger - CONFIG_UBI_SILENCE_MSG 4024 2b74433fSJoe Hershberger - CONFIG_UBIFS_SILENCE_MSG 4025 2b74433fSJoe Hershberger 4026 2b74433fSJoe Hershberger You will probably want to define these to avoid a really noisy system 4027 2b74433fSJoe Hershberger when storing the env in UBI. 4028 2b74433fSJoe Hershberger 4029 06e4ae5fSStephen Warren- CONFIG_ENV_IS_IN_MMC: 4030 06e4ae5fSStephen Warren 4031 06e4ae5fSStephen Warren Define this if you have an MMC device which you want to use for the 4032 06e4ae5fSStephen Warren environment. 4033 06e4ae5fSStephen Warren 4034 06e4ae5fSStephen Warren - CONFIG_SYS_MMC_ENV_DEV: 4035 06e4ae5fSStephen Warren 4036 06e4ae5fSStephen Warren Specifies which MMC device the environment is stored in. 4037 06e4ae5fSStephen Warren 4038 06e4ae5fSStephen Warren - CONFIG_SYS_MMC_ENV_PART (optional): 4039 06e4ae5fSStephen Warren 4040 06e4ae5fSStephen Warren Specifies which MMC partition the environment is stored in. If not 4041 06e4ae5fSStephen Warren set, defaults to partition 0, the user area. Common values might be 4042 06e4ae5fSStephen Warren 1 (first MMC boot partition), 2 (second MMC boot partition). 4043 06e4ae5fSStephen Warren 4044 06e4ae5fSStephen Warren - CONFIG_ENV_OFFSET: 4045 06e4ae5fSStephen Warren - CONFIG_ENV_SIZE: 4046 06e4ae5fSStephen Warren 4047 06e4ae5fSStephen Warren These two #defines specify the offset and size of the environment 4048 06e4ae5fSStephen Warren area within the specified MMC device. 4049 06e4ae5fSStephen Warren 4050 5c088ee8SStephen Warren If offset is positive (the usual case), it is treated as relative to 4051 5c088ee8SStephen Warren the start of the MMC partition. If offset is negative, it is treated 4052 5c088ee8SStephen Warren as relative to the end of the MMC partition. This can be useful if 4053 5c088ee8SStephen Warren your board may be fitted with different MMC devices, which have 4054 5c088ee8SStephen Warren different sizes for the MMC partitions, and you always want the 4055 5c088ee8SStephen Warren environment placed at the very end of the partition, to leave the 4056 5c088ee8SStephen Warren maximum possible space before it, to store other data. 4057 5c088ee8SStephen Warren 4058 06e4ae5fSStephen Warren These two values are in units of bytes, but must be aligned to an 4059 06e4ae5fSStephen Warren MMC sector boundary. 4060 06e4ae5fSStephen Warren 4061 06e4ae5fSStephen Warren - CONFIG_ENV_OFFSET_REDUND (optional): 4062 06e4ae5fSStephen Warren 4063 06e4ae5fSStephen Warren Specifies a second storage area, of CONFIG_ENV_SIZE size, used to 4064 06e4ae5fSStephen Warren hold a redundant copy of the environment data. This provides a 4065 06e4ae5fSStephen Warren valid backup copy in case the other copy is corrupted, e.g. due 4066 06e4ae5fSStephen Warren to a power failure during a "saveenv" operation. 4067 06e4ae5fSStephen Warren 4068 5c088ee8SStephen Warren This value may also be positive or negative; this is handled in the 4069 5c088ee8SStephen Warren same way as CONFIG_ENV_OFFSET. 4070 5c088ee8SStephen Warren 4071 06e4ae5fSStephen Warren This value is also in units of bytes, but must also be aligned to 4072 06e4ae5fSStephen Warren an MMC sector boundary. 4073 06e4ae5fSStephen Warren 4074 06e4ae5fSStephen Warren - CONFIG_ENV_SIZE_REDUND (optional): 4075 06e4ae5fSStephen Warren 4076 06e4ae5fSStephen Warren This value need not be set, even when CONFIG_ENV_OFFSET_REDUND is 4077 06e4ae5fSStephen Warren set. If this value is set, it must be set to the same value as 4078 06e4ae5fSStephen Warren CONFIG_ENV_SIZE. 4079 06e4ae5fSStephen Warren 4080 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPI_INIT_OFFSET 4081 c609719bSwdenk 4082 c609719bSwdenk Defines offset to the initial SPI buffer area in DPRAM. The 4083 c609719bSwdenk area is used at an early stage (ROM part) if the environment 4084 c609719bSwdenk is configured to reside in the SPI EEPROM: We need a 520 byte 4085 c609719bSwdenk scratch DPRAM area. It is used between the two initialization 4086 c609719bSwdenk calls (spi_init_f() and spi_init_r()). A value of 0xB00 seems 4087 c609719bSwdenk to be a good choice since it makes it far enough from the 4088 c609719bSwdenk start of the data area as well as from the stack pointer. 4089 c609719bSwdenk 4090 e881cb56SBruce AdlerPlease note that the environment is read-only until the monitor 4091 c609719bSwdenkhas been relocated to RAM and a RAM copy of the environment has been 4092 cdb74977SWolfgang Denkcreated; also, when using EEPROM you will have to use getenv_f() 4093 c609719bSwdenkuntil then to read environment variables. 4094 c609719bSwdenk 4095 85ec0bccSwdenkThe environment is protected by a CRC32 checksum. Before the monitor 4096 85ec0bccSwdenkis relocated into RAM, as a result of a bad CRC you will be working 4097 85ec0bccSwdenkwith the compiled-in default environment - *silently*!!! [This is 4098 85ec0bccSwdenknecessary, because the first environment variable we need is the 4099 85ec0bccSwdenk"baudrate" setting for the console - if we have a bad CRC, we don't 4100 85ec0bccSwdenkhave any device yet where we could complain.] 4101 c609719bSwdenk 4102 c609719bSwdenkNote: once the monitor has been relocated, then it will complain if 4103 c609719bSwdenkthe default environment is used; a new CRC is computed as soon as you 4104 85ec0bccSwdenkuse the "saveenv" command to store a valid environment. 4105 c609719bSwdenk 4106 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FAULT_ECHO_LINK_DOWN: 4107 fc3e2165Swdenk Echo the inverted Ethernet link state to the fault LED. 4108 fc3e2165Swdenk 4109 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD Note: If this option is active, then CONFIG_SYS_FAULT_MII_ADDR 4110 fc3e2165Swdenk also needs to be defined. 4111 fc3e2165Swdenk 4112 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_FAULT_MII_ADDR: 4113 fc3e2165Swdenk MII address of the PHY to check for the Ethernet link state. 4114 c609719bSwdenk 4115 f5675aa5SRon Madrid- CONFIG_NS16550_MIN_FUNCTIONS: 4116 f5675aa5SRon Madrid Define this if you desire to only have use of the NS16550_init 4117 f5675aa5SRon Madrid and NS16550_putc functions for the serial driver located at 4118 f5675aa5SRon Madrid drivers/serial/ns16550.c. This option is useful for saving 4119 f5675aa5SRon Madrid space for already greatly restricted images, including but not 4120 f5675aa5SRon Madrid limited to NAND_SPL configurations. 4121 f5675aa5SRon Madrid 4122 b2b92f53SSimon Glass- CONFIG_DISPLAY_BOARDINFO 4123 b2b92f53SSimon Glass Display information about the board that U-Boot is running on 4124 b2b92f53SSimon Glass when U-Boot starts up. The board function checkboard() is called 4125 b2b92f53SSimon Glass to do this. 4126 b2b92f53SSimon Glass 4127 e2e3e2b1SSimon Glass- CONFIG_DISPLAY_BOARDINFO_LATE 4128 e2e3e2b1SSimon Glass Similar to the previous option, but display this information 4129 e2e3e2b1SSimon Glass later, once stdio is running and output goes to the LCD, if 4130 e2e3e2b1SSimon Glass present. 4131 e2e3e2b1SSimon Glass 4132 c609719bSwdenkLow Level (hardware related) configuration options: 4133 dc7c9a1aSwdenk--------------------------------------------------- 4134 c609719bSwdenk 4135 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CACHELINE_SIZE: 4136 c609719bSwdenk Cache Line Size of the CPU. 4137 c609719bSwdenk 4138 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DEFAULT_IMMR: 4139 c609719bSwdenk Default address of the IMMR after system reset. 4140 2535d602Swdenk 4141 2535d602Swdenk Needed on some 8260 systems (MPC8260ADS, PQ2FADS-ZU, 4142 2535d602Swdenk and RPXsuper) to be able to adjust the position of 4143 2535d602Swdenk the IMMR register after a reset. 4144 c609719bSwdenk 4145 e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_DEFAULT: 4146 e46fedfeSTimur Tabi Default (power-on reset) physical address of CCSR on Freescale 4147 e46fedfeSTimur Tabi PowerPC SOCs. 4148 e46fedfeSTimur Tabi 4149 e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR: 4150 e46fedfeSTimur Tabi Virtual address of CCSR. On a 32-bit build, this is typically 4151 e46fedfeSTimur Tabi the same value as CONFIG_SYS_CCSRBAR_DEFAULT. 4152 e46fedfeSTimur Tabi 4153 e46fedfeSTimur Tabi CONFIG_SYS_DEFAULT_IMMR must also be set to this value, 4154 e46fedfeSTimur Tabi for cross-platform code that uses that macro instead. 4155 e46fedfeSTimur Tabi 4156 e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS: 4157 e46fedfeSTimur Tabi Physical address of CCSR. CCSR can be relocated to a new 4158 e46fedfeSTimur Tabi physical address, if desired. In this case, this macro should 4159 e46fedfeSTimur Tabi be set to that address. Otherwise, it should be set to the 4160 e46fedfeSTimur Tabi same value as CONFIG_SYS_CCSRBAR_DEFAULT. For example, CCSR 4161 e46fedfeSTimur Tabi is typically relocated on 36-bit builds. It is recommended 4162 e46fedfeSTimur Tabi that this macro be defined via the _HIGH and _LOW macros: 4163 e46fedfeSTimur Tabi 4164 e46fedfeSTimur Tabi #define CONFIG_SYS_CCSRBAR_PHYS ((CONFIG_SYS_CCSRBAR_PHYS_HIGH 4165 e46fedfeSTimur Tabi * 1ull) << 32 | CONFIG_SYS_CCSRBAR_PHYS_LOW) 4166 e46fedfeSTimur Tabi 4167 e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS_HIGH: 4168 e46fedfeSTimur Tabi Bits 33-36 of CONFIG_SYS_CCSRBAR_PHYS. This value is typically 4169 e46fedfeSTimur Tabi either 0 (32-bit build) or 0xF (36-bit build). This macro is 4170 e46fedfeSTimur Tabi used in assembly code, so it must not contain typecasts or 4171 e46fedfeSTimur Tabi integer size suffixes (e.g. "ULL"). 4172 e46fedfeSTimur Tabi 4173 e46fedfeSTimur Tabi- CONFIG_SYS_CCSRBAR_PHYS_LOW: 4174 e46fedfeSTimur Tabi Lower 32-bits of CONFIG_SYS_CCSRBAR_PHYS. This macro is 4175 e46fedfeSTimur Tabi used in assembly code, so it must not contain typecasts or 4176 e46fedfeSTimur Tabi integer size suffixes (e.g. "ULL"). 4177 e46fedfeSTimur Tabi 4178 e46fedfeSTimur Tabi- CONFIG_SYS_CCSR_DO_NOT_RELOCATE: 4179 e46fedfeSTimur Tabi If this macro is defined, then CONFIG_SYS_CCSRBAR_PHYS will be 4180 e46fedfeSTimur Tabi forced to a value that ensures that CCSR is not relocated. 4181 e46fedfeSTimur Tabi 4182 7f6c2cbcSwdenk- Floppy Disk Support: 4183 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FDC_DRIVE_NUMBER 4184 7f6c2cbcSwdenk 4185 7f6c2cbcSwdenk the default drive number (default value 0) 4186 7f6c2cbcSwdenk 4187 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_ISA_IO_STRIDE 4188 7f6c2cbcSwdenk 4189 11ccc33fSMarcel Ziswiler defines the spacing between FDC chipset registers 4190 7f6c2cbcSwdenk (default value 1) 4191 7f6c2cbcSwdenk 4192 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_ISA_IO_OFFSET 4193 7f6c2cbcSwdenk 4194 7f6c2cbcSwdenk defines the offset of register from address. It 4195 7f6c2cbcSwdenk depends on which part of the data bus is connected to 4196 11ccc33fSMarcel Ziswiler the FDC chipset. (default value 0) 4197 7f6c2cbcSwdenk 4198 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD If CONFIG_SYS_ISA_IO_STRIDE CONFIG_SYS_ISA_IO_OFFSET and 4199 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_FDC_DRIVE_NUMBER are undefined, they take their 4200 7f6c2cbcSwdenk default value. 4201 7f6c2cbcSwdenk 4202 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD if CONFIG_SYS_FDC_HW_INIT is defined, then the function 4203 7f6c2cbcSwdenk fdc_hw_init() is called at the beginning of the FDC 4204 7f6c2cbcSwdenk setup. fdc_hw_init() must be provided by the board 4205 7f6c2cbcSwdenk source code. It is used to make hardware dependant 4206 7f6c2cbcSwdenk initializations. 4207 7f6c2cbcSwdenk 4208 0abddf82SMacpaul Lin- CONFIG_IDE_AHB: 4209 0abddf82SMacpaul Lin Most IDE controllers were designed to be connected with PCI 4210 0abddf82SMacpaul Lin interface. Only few of them were designed for AHB interface. 4211 0abddf82SMacpaul Lin When software is doing ATA command and data transfer to 4212 0abddf82SMacpaul Lin IDE devices through IDE-AHB controller, some additional 4213 0abddf82SMacpaul Lin registers accessing to these kind of IDE-AHB controller 4214 0abddf82SMacpaul Lin is requierd. 4215 0abddf82SMacpaul Lin 4216 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_IMMR: Physical address of the Internal Memory. 4217 25d6712aSwdenk DO NOT CHANGE unless you know exactly what you're 4218 25d6712aSwdenk doing! (11-4) [MPC8xx/82xx systems only] 4219 c609719bSwdenk 4220 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_INIT_RAM_ADDR: 4221 c609719bSwdenk 4222 7152b1d0Swdenk Start address of memory area that can be used for 4223 c609719bSwdenk initial data and stack; please note that this must be 4224 c609719bSwdenk writable memory that is working WITHOUT special 4225 c609719bSwdenk initialization, i. e. you CANNOT use normal RAM which 4226 c609719bSwdenk will become available only after programming the 4227 c609719bSwdenk memory controller and running certain initialization 4228 c609719bSwdenk sequences. 4229 c609719bSwdenk 4230 c609719bSwdenk U-Boot uses the following memory types: 4231 c609719bSwdenk - MPC8xx and MPC8260: IMMR (internal memory of the CPU) 4232 c609719bSwdenk - MPC824X: data cache 4233 c609719bSwdenk - PPC4xx: data cache 4234 c609719bSwdenk 4235 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_GBL_DATA_OFFSET: 4236 c609719bSwdenk 4237 c609719bSwdenk Offset of the initial data structure in the memory 4238 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD area defined by CONFIG_SYS_INIT_RAM_ADDR. Usually 4239 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_GBL_DATA_OFFSET is chosen such that the initial 4240 c609719bSwdenk data is located at the end of the available space 4241 553f0982SWolfgang Denk (sometimes written as (CONFIG_SYS_INIT_RAM_SIZE - 4242 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_DATA_SIZE), and the initial stack is just 4243 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD below that area (growing from (CONFIG_SYS_INIT_RAM_ADDR + 4244 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_GBL_DATA_OFFSET) downward. 4245 c609719bSwdenk 4246 c609719bSwdenk Note: 4247 c609719bSwdenk On the MPC824X (or other systems that use the data 4248 c609719bSwdenk cache for initial memory) the address chosen for 4249 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_RAM_ADDR is basically arbitrary - it must 4250 c609719bSwdenk point to an otherwise UNUSED address space between 4251 c609719bSwdenk the top of RAM and the start of the PCI space. 4252 c609719bSwdenk 4253 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SIUMCR: SIU Module Configuration (11-6) 4254 c609719bSwdenk 4255 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SYPCR: System Protection Control (11-9) 4256 c609719bSwdenk 4257 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_TBSCR: Time Base Status and Control (11-26) 4258 c609719bSwdenk 4259 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PISCR: Periodic Interrupt Status and Control (11-31) 4260 c609719bSwdenk 4261 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PLPRCR: PLL, Low-Power, and Reset Control Register (15-30) 4262 c609719bSwdenk 4263 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SCCR: System Clock and reset Control Register (15-27) 4264 c609719bSwdenk 4265 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_OR_TIMING_SDRAM: 4266 c609719bSwdenk SDRAM timing 4267 c609719bSwdenk 4268 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAMR_PTA: 4269 c609719bSwdenk periodic timer for refresh 4270 c609719bSwdenk 4271 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_DER: Debug Event Register (37-47) 4272 c609719bSwdenk 4273 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- FLASH_BASE0_PRELIM, FLASH_BASE1_PRELIM, CONFIG_SYS_REMAP_OR_AM, 4274 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PRELIM_OR_AM, CONFIG_SYS_OR_TIMING_FLASH, CONFIG_SYS_OR0_REMAP, 4275 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR0_PRELIM, CONFIG_SYS_BR0_PRELIM, CONFIG_SYS_OR1_REMAP, CONFIG_SYS_OR1_PRELIM, 4276 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BR1_PRELIM: 4277 c609719bSwdenk Memory Controller Definitions: BR0/1 and OR0/1 (FLASH) 4278 c609719bSwdenk 4279 c609719bSwdenk- SDRAM_BASE2_PRELIM, SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE, 4280 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR_TIMING_SDRAM, CONFIG_SYS_OR2_PRELIM, CONFIG_SYS_BR2_PRELIM, 4281 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_OR3_PRELIM, CONFIG_SYS_BR3_PRELIM: 4282 c609719bSwdenk Memory Controller Definitions: BR2/3 and OR2/3 (SDRAM) 4283 c609719bSwdenk 4284 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_MAMR_PTA, CONFIG_SYS_MPTPR_2BK_4K, CONFIG_SYS_MPTPR_1BK_4K, CONFIG_SYS_MPTPR_2BK_8K, 4285 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_MPTPR_1BK_8K, CONFIG_SYS_MAMR_8COL, CONFIG_SYS_MAMR_9COL: 4286 c609719bSwdenk Machine Mode Register and Memory Periodic Timer 4287 c609719bSwdenk Prescaler definitions (SDRAM timing) 4288 c609719bSwdenk 4289 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_I2C_UCODE_PATCH, CONFIG_SYS_I2C_DPMEM_OFFSET [0x1FC0]: 4290 c609719bSwdenk enable I2C microcode relocation patch (MPC8xx); 4291 c609719bSwdenk define relocation offset in DPRAM [DSP2] 4292 c609719bSwdenk 4293 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SMC_UCODE_PATCH, CONFIG_SYS_SMC_DPMEM_OFFSET [0x1FC0]: 4294 b423d055SHeiko Schocher enable SMC microcode relocation patch (MPC8xx); 4295 b423d055SHeiko Schocher define relocation offset in DPRAM [SMC1] 4296 b423d055SHeiko Schocher 4297 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPI_UCODE_PATCH, CONFIG_SYS_SPI_DPMEM_OFFSET [0x1FC0]: 4298 c609719bSwdenk enable SPI microcode relocation patch (MPC8xx); 4299 c609719bSwdenk define relocation offset in DPRAM [SCC4] 4300 c609719bSwdenk 4301 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_USE_OSCCLK: 4302 c609719bSwdenk Use OSCM clock mode on MBX8xx board. Be careful, 4303 c609719bSwdenk wrong setting might damage your board. Read 4304 c609719bSwdenk doc/README.MBX before setting this variable! 4305 c609719bSwdenk 4306 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_CPM_POST_WORD_ADDR: (MPC8xx, MPC8260 only) 4307 ea909b76Swdenk Offset of the bootmode word in DPRAM used by post 4308 ea909b76Swdenk (Power On Self Tests). This definition overrides 4309 ea909b76Swdenk #define'd default value in commproc.h resp. 4310 ea909b76Swdenk cpm_8260.h. 4311 ea909b76Swdenk 4312 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_PCI_SLV_MEM_LOCAL, CONFIG_SYS_PCI_SLV_MEM_BUS, CONFIG_SYS_PICMR0_MASK_ATTRIB, 4313 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR0_LOCAL, CONFIG_SYS_PCIMSK0_MASK, CONFIG_SYS_PCI_MSTR1_LOCAL, 4314 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCIMSK1_MASK, CONFIG_SYS_PCI_MSTR_MEM_LOCAL, CONFIG_SYS_PCI_MSTR_MEM_BUS, 4315 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_CPU_PCI_MEM_START, CONFIG_SYS_PCI_MSTR_MEM_SIZE, CONFIG_SYS_POCMR0_MASK_ATTRIB, 4316 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_MEMIO_LOCAL, CONFIG_SYS_PCI_MSTR_MEMIO_BUS, CPU_PCI_MEMIO_START, 4317 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_MEMIO_SIZE, CONFIG_SYS_POCMR1_MASK_ATTRIB, CONFIG_SYS_PCI_MSTR_IO_LOCAL, 4318 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_PCI_MSTR_IO_BUS, CONFIG_SYS_CPU_PCI_IO_START, CONFIG_SYS_PCI_MSTR_IO_SIZE, 4319 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_POCMR2_MASK_ATTRIB: (MPC826x only) 4320 a47a12beSStefan Roese Overrides the default PCI memory map in arch/powerpc/cpu/mpc8260/pci.c if set. 4321 5d232d0eSwdenk 4322 9cacf4fcSDirk Eibach- CONFIG_PCI_DISABLE_PCIE: 4323 9cacf4fcSDirk Eibach Disable PCI-Express on systems where it is supported but not 4324 9cacf4fcSDirk Eibach required. 4325 9cacf4fcSDirk Eibach 4326 69fd2d3bSAndrew Sharp- CONFIG_PCI_ENUM_ONLY 4327 69fd2d3bSAndrew Sharp Only scan through and get the devices on the busses. 4328 69fd2d3bSAndrew Sharp Don't do any setup work, presumably because someone or 4329 69fd2d3bSAndrew Sharp something has already done it, and we don't need to do it 4330 69fd2d3bSAndrew Sharp a second time. Useful for platforms that are pre-booted 4331 69fd2d3bSAndrew Sharp by coreboot or similar. 4332 69fd2d3bSAndrew Sharp 4333 842033e6SGabor Juhos- CONFIG_PCI_INDIRECT_BRIDGE: 4334 842033e6SGabor Juhos Enable support for indirect PCI bridges. 4335 842033e6SGabor Juhos 4336 a09b9b68SKumar Gala- CONFIG_SYS_SRIO: 4337 a09b9b68SKumar Gala Chip has SRIO or not 4338 a09b9b68SKumar Gala 4339 a09b9b68SKumar Gala- CONFIG_SRIO1: 4340 a09b9b68SKumar Gala Board has SRIO 1 port available 4341 a09b9b68SKumar Gala 4342 a09b9b68SKumar Gala- CONFIG_SRIO2: 4343 a09b9b68SKumar Gala Board has SRIO 2 port available 4344 a09b9b68SKumar Gala 4345 c8b28152SLiu Gang- CONFIG_SRIO_PCIE_BOOT_MASTER 4346 c8b28152SLiu Gang Board can support master function for Boot from SRIO and PCIE 4347 c8b28152SLiu Gang 4348 a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_VIRT: 4349 a09b9b68SKumar Gala Virtual Address of SRIO port 'n' memory region 4350 a09b9b68SKumar Gala 4351 a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_PHYS: 4352 a09b9b68SKumar Gala Physical Address of SRIO port 'n' memory region 4353 a09b9b68SKumar Gala 4354 a09b9b68SKumar Gala- CONFIG_SYS_SRIOn_MEM_SIZE: 4355 a09b9b68SKumar Gala Size of SRIO port 'n' memory region 4356 a09b9b68SKumar Gala 4357 66bd1846SFabio Estevam- CONFIG_SYS_NAND_BUSWIDTH_16BIT 4358 66bd1846SFabio Estevam Defined to tell the NAND controller that the NAND chip is using 4359 66bd1846SFabio Estevam a 16 bit bus. 4360 66bd1846SFabio Estevam Not all NAND drivers use this symbol. 4361 a430e916SFabio Estevam Example of drivers that use it: 4362 66bd1846SFabio Estevam - drivers/mtd/nand/ndfc.c 4363 a430e916SFabio Estevam - drivers/mtd/nand/mxc_nand.c 4364 eced4626SAlex Waterman 4365 eced4626SAlex Waterman- CONFIG_SYS_NDFC_EBC0_CFG 4366 eced4626SAlex Waterman Sets the EBC0_CFG register for the NDFC. If not defined 4367 eced4626SAlex Waterman a default value will be used. 4368 eced4626SAlex Waterman 4369 bb99ad6dSBen Warren- CONFIG_SPD_EEPROM 4370 218ca724SWolfgang Denk Get DDR timing information from an I2C EEPROM. Common 4371 218ca724SWolfgang Denk with pluggable memory modules such as SODIMMs 4372 218ca724SWolfgang Denk 4373 bb99ad6dSBen Warren SPD_EEPROM_ADDRESS 4374 bb99ad6dSBen Warren I2C address of the SPD EEPROM 4375 bb99ad6dSBen Warren 4376 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_SPD_BUS_NUM 4377 218ca724SWolfgang Denk If SPD EEPROM is on an I2C bus other than the first 4378 218ca724SWolfgang Denk one, specify here. Note that the value must resolve 4379 218ca724SWolfgang Denk to something your driver can deal with. 4380 bb99ad6dSBen Warren 4381 1b3e3c4fSYork Sun- CONFIG_SYS_DDR_RAW_TIMING 4382 1b3e3c4fSYork Sun Get DDR timing information from other than SPD. Common with 4383 1b3e3c4fSYork Sun soldered DDR chips onboard without SPD. DDR raw timing 4384 1b3e3c4fSYork Sun parameters are extracted from datasheet and hard-coded into 4385 1b3e3c4fSYork Sun header files or board specific files. 4386 1b3e3c4fSYork Sun 4387 6f5e1dc5SYork Sun- CONFIG_FSL_DDR_INTERACTIVE 4388 6f5e1dc5SYork Sun Enable interactive DDR debugging. See doc/README.fsl-ddr. 4389 6f5e1dc5SYork Sun 4390 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD- CONFIG_SYS_83XX_DDR_USES_CS0 4391 218ca724SWolfgang Denk Only for 83xx systems. If specified, then DDR should 4392 218ca724SWolfgang Denk be configured using CS0 and CS1 instead of CS2 and CS3. 4393 2ad6b513STimur Tabi 4394 c26e454dSwdenk- CONFIG_ETHER_ON_FEC[12] 4395 c26e454dSwdenk Define to enable FEC[12] on a 8xx series processor. 4396 c26e454dSwdenk 4397 c26e454dSwdenk- CONFIG_FEC[12]_PHY 4398 c26e454dSwdenk Define to the hardcoded PHY address which corresponds 4399 6e592385Swdenk to the given FEC; i. e. 4400 c26e454dSwdenk #define CONFIG_FEC1_PHY 4 4401 c26e454dSwdenk means that the PHY with address 4 is connected to FEC1 4402 c26e454dSwdenk 4403 c26e454dSwdenk When set to -1, means to probe for first available. 4404 c26e454dSwdenk 4405 c26e454dSwdenk- CONFIG_FEC[12]_PHY_NORXERR 4406 c26e454dSwdenk The PHY does not have a RXERR line (RMII only). 4407 c26e454dSwdenk (so program the FEC to ignore it). 4408 c26e454dSwdenk 4409 c26e454dSwdenk- CONFIG_RMII 4410 c26e454dSwdenk Enable RMII mode for all FECs. 4411 c26e454dSwdenk Note that this is a global option, we can't 4412 c26e454dSwdenk have one FEC in standard MII mode and another in RMII mode. 4413 c26e454dSwdenk 4414 5cf91d6bSwdenk- CONFIG_CRC32_VERIFY 4415 5cf91d6bSwdenk Add a verify option to the crc32 command. 4416 5cf91d6bSwdenk The syntax is: 4417 5cf91d6bSwdenk 4418 5cf91d6bSwdenk => crc32 -v <address> <count> <crc32> 4419 5cf91d6bSwdenk 4420 5cf91d6bSwdenk Where address/count indicate a memory area 4421 5cf91d6bSwdenk and crc32 is the correct crc32 which the 4422 5cf91d6bSwdenk area should have. 4423 5cf91d6bSwdenk 4424 56523f12Swdenk- CONFIG_LOOPW 4425 56523f12Swdenk Add the "loopw" memory command. This only takes effect if 4426 602ad3b3SJon Loeliger the memory commands are activated globally (CONFIG_CMD_MEM). 4427 56523f12Swdenk 4428 7b466641Sstroese- CONFIG_MX_CYCLIC 4429 7b466641Sstroese Add the "mdc" and "mwc" memory commands. These are cyclic 4430 7b466641Sstroese "md/mw" commands. 4431 7b466641Sstroese Examples: 4432 7b466641Sstroese 4433 7b466641Sstroese => mdc.b 10 4 500 4434 7b466641Sstroese This command will print 4 bytes (10,11,12,13) each 500 ms. 4435 7b466641Sstroese 4436 7b466641Sstroese => mwc.l 100 12345678 10 4437 7b466641Sstroese This command will write 12345678 to address 100 all 10 ms. 4438 7b466641Sstroese 4439 7b466641Sstroese This only takes effect if the memory commands are activated 4440 602ad3b3SJon Loeliger globally (CONFIG_CMD_MEM). 4441 7b466641Sstroese 4442 8aa1a2d1Swdenk- CONFIG_SKIP_LOWLEVEL_INIT 4443 afc1ce82SMacpaul Lin [ARM, NDS32, MIPS only] If this variable is defined, then certain 4444 e03f3169SWolfgang Denk low level initializations (like setting up the memory 4445 e03f3169SWolfgang Denk controller) are omitted and/or U-Boot does not 4446 e03f3169SWolfgang Denk relocate itself into RAM. 4447 8aa1a2d1Swdenk 4448 e03f3169SWolfgang Denk Normally this variable MUST NOT be defined. The only 4449 e03f3169SWolfgang Denk exception is when U-Boot is loaded (to RAM) by some 4450 e03f3169SWolfgang Denk other boot loader or by a debugger which performs 4451 e03f3169SWolfgang Denk these initializations itself. 4452 8aa1a2d1Swdenk 4453 401bb30bSAneesh V- CONFIG_SPL_BUILD 4454 df81238bSMagnus Lilja Modifies the behaviour of start.S when compiling a loader 4455 df81238bSMagnus Lilja that is executed before the actual U-Boot. E.g. when 4456 df81238bSMagnus Lilja compiling a NAND SPL. 4457 400558b5Swdenk 4458 3aa29de0SYing Zhang- CONFIG_TPL_BUILD 4459 3aa29de0SYing Zhang Modifies the behaviour of start.S when compiling a loader 4460 3aa29de0SYing Zhang that is executed after the SPL and before the actual U-Boot. 4461 3aa29de0SYing Zhang It is loaded by the SPL. 4462 3aa29de0SYing Zhang 4463 5df572f0SYing Zhang- CONFIG_SYS_MPC85XX_NO_RESETVEC 4464 5df572f0SYing Zhang Only for 85xx systems. If this variable is specified, the section 4465 5df572f0SYing Zhang .resetvec is not kept and the section .bootpg is placed in the 4466 5df572f0SYing Zhang previous 4k of the .text section. 4467 5df572f0SYing Zhang 4468 4213fc29SSimon Glass- CONFIG_ARCH_MAP_SYSMEM 4469 4213fc29SSimon Glass Generally U-Boot (and in particular the md command) uses 4470 4213fc29SSimon Glass effective address. It is therefore not necessary to regard 4471 4213fc29SSimon Glass U-Boot address as virtual addresses that need to be translated 4472 4213fc29SSimon Glass to physical addresses. However, sandbox requires this, since 4473 4213fc29SSimon Glass it maintains its own little RAM buffer which contains all 4474 4213fc29SSimon Glass addressable memory. This option causes some memory accesses 4475 4213fc29SSimon Glass to be mapped through map_sysmem() / unmap_sysmem(). 4476 4213fc29SSimon Glass 4477 d8834a13SMatthias Weisser- CONFIG_USE_ARCH_MEMCPY 4478 d8834a13SMatthias Weisser CONFIG_USE_ARCH_MEMSET 4479 d8834a13SMatthias Weisser If these options are used a optimized version of memcpy/memset will 4480 d8834a13SMatthias Weisser be used if available. These functions may be faster under some 4481 d8834a13SMatthias Weisser conditions but may increase the binary size. 4482 d8834a13SMatthias Weisser 4483 588a13f7SSimon Glass- CONFIG_X86_RESET_VECTOR 4484 588a13f7SSimon Glass If defined, the x86 reset vector code is included. This is not 4485 588a13f7SSimon Glass needed when U-Boot is running from Coreboot. 4486 b16f521aSGabe Black 4487 fc33705eSMark Jackson- CONFIG_SYS_MPUCLK 4488 fc33705eSMark Jackson Defines the MPU clock speed (in MHz). 4489 fc33705eSMark Jackson 4490 fc33705eSMark Jackson NOTE : currently only supported on AM335x platforms. 4491 5b5ece9eSGabe Black 4492 16678eb4SHeiko Schocher- CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC: 4493 16678eb4SHeiko Schocher Enables the RTC32K OSC on AM33xx based plattforms 4494 16678eb4SHeiko Schocher 4495 f2717b47STimur TabiFreescale QE/FMAN Firmware Support: 4496 f2717b47STimur Tabi----------------------------------- 4497 f2717b47STimur Tabi 4498 f2717b47STimur TabiThe Freescale QUICCEngine (QE) and Frame Manager (FMAN) both support the 4499 f2717b47STimur Tabiloading of "firmware", which is encoded in the QE firmware binary format. 4500 f2717b47STimur TabiThis firmware often needs to be loaded during U-Boot booting, so macros 4501 f2717b47STimur Tabiare used to identify the storage device (NOR flash, SPI, etc) and the address 4502 f2717b47STimur Tabiwithin that device. 4503 f2717b47STimur Tabi 4504 f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_ADDR 4505 f2717b47STimur Tabi The address in the storage device where the firmware is located. The 4506 f2717b47STimur Tabi meaning of this address depends on which CONFIG_SYS_QE_FW_IN_xxx macro 4507 f2717b47STimur Tabi is also specified. 4508 f2717b47STimur Tabi 4509 f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_LENGTH 4510 f2717b47STimur Tabi The maximum possible size of the firmware. The firmware binary format 4511 f2717b47STimur Tabi has a field that specifies the actual size of the firmware, but it 4512 f2717b47STimur Tabi might not be possible to read any part of the firmware unless some 4513 f2717b47STimur Tabi local storage is allocated to hold the entire firmware first. 4514 f2717b47STimur Tabi 4515 f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_NOR 4516 f2717b47STimur Tabi Specifies that QE/FMAN firmware is located in NOR flash, mapped as 4517 f2717b47STimur Tabi normal addressable memory via the LBC. CONFIG_SYS_FMAN_FW_ADDR is the 4518 f2717b47STimur Tabi virtual address in NOR flash. 4519 f2717b47STimur Tabi 4520 f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_NAND 4521 f2717b47STimur Tabi Specifies that QE/FMAN firmware is located in NAND flash. 4522 f2717b47STimur Tabi CONFIG_SYS_FMAN_FW_ADDR is the offset within NAND flash. 4523 f2717b47STimur Tabi 4524 f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_MMC 4525 f2717b47STimur Tabi Specifies that QE/FMAN firmware is located on the primary SD/MMC 4526 f2717b47STimur Tabi device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device. 4527 f2717b47STimur Tabi 4528 f2717b47STimur Tabi- CONFIG_SYS_QE_FMAN_FW_IN_SPIFLASH 4529 f2717b47STimur Tabi Specifies that QE/FMAN firmware is located on the primary SPI 4530 f2717b47STimur Tabi device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device. 4531 f2717b47STimur Tabi 4532 292dc6c5SLiu Gang- CONFIG_SYS_QE_FMAN_FW_IN_REMOTE 4533 292dc6c5SLiu Gang Specifies that QE/FMAN firmware is located in the remote (master) 4534 292dc6c5SLiu Gang memory space. CONFIG_SYS_FMAN_FW_ADDR is a virtual address which 4535 fc54c7faSLiu Gang can be mapped from slave TLB->slave LAW->slave SRIO or PCIE outbound 4536 fc54c7faSLiu Gang window->master inbound window->master LAW->the ucode address in 4537 fc54c7faSLiu Gang master's memory space. 4538 f2717b47STimur Tabi 4539 c609719bSwdenkBuilding the Software: 4540 c609719bSwdenk====================== 4541 c609719bSwdenk 4542 218ca724SWolfgang DenkBuilding U-Boot has been tested in several native build environments 4543 218ca724SWolfgang Denkand in many different cross environments. Of course we cannot support 4544 218ca724SWolfgang Denkall possibly existing versions of cross development tools in all 4545 218ca724SWolfgang Denk(potentially obsolete) versions. In case of tool chain problems we 4546 218ca724SWolfgang Denkrecommend to use the ELDK (see http://www.denx.de/wiki/DULG/ELDK) 4547 218ca724SWolfgang Denkwhich is extensively used to build and test U-Boot. 4548 c609719bSwdenk 4549 218ca724SWolfgang DenkIf you are not using a native environment, it is assumed that you 4550 218ca724SWolfgang Denkhave GNU cross compiling tools available in your path. In this case, 4551 218ca724SWolfgang Denkyou must set the environment variable CROSS_COMPILE in your shell. 4552 218ca724SWolfgang DenkNote that no changes to the Makefile or any other source files are 4553 218ca724SWolfgang Denknecessary. For example using the ELDK on a 4xx CPU, please enter: 4554 c609719bSwdenk 4555 218ca724SWolfgang Denk $ CROSS_COMPILE=ppc_4xx- 4556 218ca724SWolfgang Denk $ export CROSS_COMPILE 4557 c609719bSwdenk 4558 2f8d396bSPeter TyserNote: If you wish to generate Windows versions of the utilities in 4559 2f8d396bSPeter Tyser the tools directory you can use the MinGW toolchain 4560 2f8d396bSPeter Tyser (http://www.mingw.org). Set your HOST tools to the MinGW 4561 2f8d396bSPeter Tyser toolchain and execute 'make tools'. For example: 4562 2f8d396bSPeter Tyser 4563 2f8d396bSPeter Tyser $ make HOSTCC=i586-mingw32msvc-gcc HOSTSTRIP=i586-mingw32msvc-strip tools 4564 2f8d396bSPeter Tyser 4565 2f8d396bSPeter Tyser Binaries such as tools/mkimage.exe will be created which can 4566 2f8d396bSPeter Tyser be executed on computers running Windows. 4567 2f8d396bSPeter Tyser 4568 c609719bSwdenkU-Boot is intended to be simple to build. After installing the 4569 c609719bSwdenksources you must configure U-Boot for one specific board type. This 4570 c609719bSwdenkis done by typing: 4571 c609719bSwdenk 4572 c609719bSwdenk make NAME_config 4573 c609719bSwdenk 4574 218ca724SWolfgang Denkwhere "NAME_config" is the name of one of the existing configu- 4575 4d675ae6SMichael Jonesrations; see boards.cfg for supported names. 4576 54387ac9Swdenk 4577 c609719bSwdenkNote: for some board special configuration names may exist; check if 4578 c609719bSwdenk additional information is available from the board vendor; for 4579 2729af9dSwdenk instance, the TQM823L systems are available without (standard) 4580 2729af9dSwdenk or with LCD support. You can select such additional "features" 4581 11ccc33fSMarcel Ziswiler when choosing the configuration, i. e. 4582 c609719bSwdenk 4583 2729af9dSwdenk make TQM823L_config 4584 2729af9dSwdenk - will configure for a plain TQM823L, i. e. no LCD support 4585 c609719bSwdenk 4586 c609719bSwdenk make TQM823L_LCD_config 4587 c609719bSwdenk - will configure for a TQM823L with U-Boot console on LCD 4588 c609719bSwdenk 4589 c609719bSwdenk etc. 4590 c609719bSwdenk 4591 c609719bSwdenk 4592 c609719bSwdenkFinally, type "make all", and you should get some working U-Boot 4593 7152b1d0Swdenkimages ready for download to / installation on your system: 4594 c609719bSwdenk 4595 c609719bSwdenk- "u-boot.bin" is a raw binary image 4596 c609719bSwdenk- "u-boot" is an image in ELF binary format 4597 c609719bSwdenk- "u-boot.srec" is in Motorola S-Record format 4598 c609719bSwdenk 4599 baf31249SMarian BalakowiczBy default the build is performed locally and the objects are saved 4600 baf31249SMarian Balakowiczin the source directory. One of the two methods can be used to change 4601 baf31249SMarian Balakowiczthis behavior and build U-Boot to some external directory: 4602 baf31249SMarian Balakowicz 4603 baf31249SMarian Balakowicz1. Add O= to the make command line invocations: 4604 baf31249SMarian Balakowicz 4605 baf31249SMarian Balakowicz make O=/tmp/build distclean 4606 baf31249SMarian Balakowicz make O=/tmp/build NAME_config 4607 baf31249SMarian Balakowicz make O=/tmp/build all 4608 baf31249SMarian Balakowicz 4609 baf31249SMarian Balakowicz2. Set environment variable BUILD_DIR to point to the desired location: 4610 baf31249SMarian Balakowicz 4611 baf31249SMarian Balakowicz export BUILD_DIR=/tmp/build 4612 baf31249SMarian Balakowicz make distclean 4613 baf31249SMarian Balakowicz make NAME_config 4614 baf31249SMarian Balakowicz make all 4615 baf31249SMarian Balakowicz 4616 baf31249SMarian BalakowiczNote that the command line "O=" setting overrides the BUILD_DIR environment 4617 baf31249SMarian Balakowiczvariable. 4618 baf31249SMarian Balakowicz 4619 c609719bSwdenk 4620 c609719bSwdenkPlease be aware that the Makefiles assume you are using GNU make, so 4621 c609719bSwdenkfor instance on NetBSD you might need to use "gmake" instead of 4622 c609719bSwdenknative "make". 4623 c609719bSwdenk 4624 c609719bSwdenk 4625 c609719bSwdenkIf the system board that you have is not listed, then you will need 4626 c609719bSwdenkto port U-Boot to your hardware platform. To do this, follow these 4627 c609719bSwdenksteps: 4628 c609719bSwdenk 4629 c609719bSwdenk1. Add a new configuration option for your board to the toplevel 4630 4d675ae6SMichael Jones "boards.cfg" file, using the existing entries as examples. 4631 4d675ae6SMichael Jones Follow the instructions there to keep the boards in order. 4632 c609719bSwdenk2. Create a new directory to hold your board specific code. Add any 4633 85ec0bccSwdenk files you need. In your board directory, you will need at least 4634 85ec0bccSwdenk the "Makefile", a "<board>.c", "flash.c" and "u-boot.lds". 4635 85ec0bccSwdenk3. Create a new configuration file "include/configs/<board>.h" for 4636 85ec0bccSwdenk your board 4637 c609719bSwdenk3. If you're porting U-Boot to a new CPU, then also create a new 4638 c609719bSwdenk directory to hold your CPU specific code. Add any files you need. 4639 85ec0bccSwdenk4. Run "make <board>_config" with your new name. 4640 c609719bSwdenk5. Type "make", and you should get a working "u-boot.srec" file 4641 c609719bSwdenk to be installed on your target system. 4642 85ec0bccSwdenk6. Debug and solve any problems that might arise. 4643 c609719bSwdenk [Of course, this last step is much harder than it sounds.] 4644 c609719bSwdenk 4645 c609719bSwdenk 4646 c609719bSwdenkTesting of U-Boot Modifications, Ports to New Hardware, etc.: 4647 c609719bSwdenk============================================================== 4648 c609719bSwdenk 4649 c609719bSwdenkIf you have modified U-Boot sources (for instance added a new board 4650 c609719bSwdenkor support for new devices, a new CPU, etc.) you are expected to 4651 c609719bSwdenkprovide feedback to the other developers. The feedback normally takes 4652 c609719bSwdenkthe form of a "patch", i. e. a context diff against a certain (latest 4653 218ca724SWolfgang Denkofficial or latest in the git repository) version of U-Boot sources. 4654 c609719bSwdenk 4655 c609719bSwdenkBut before you submit such a patch, please verify that your modifi- 4656 c609719bSwdenkcation did not break existing code. At least make sure that *ALL* of 4657 c609719bSwdenkthe supported boards compile WITHOUT ANY compiler warnings. To do so, 4658 c609719bSwdenkjust run the "MAKEALL" script, which will configure and build U-Boot 4659 c609719bSwdenkfor ALL supported system. Be warned, this will take a while. You can 4660 7152b1d0Swdenkselect which (cross) compiler to use by passing a `CROSS_COMPILE' 4661 218ca724SWolfgang Denkenvironment variable to the script, i. e. to use the ELDK cross tools 4662 218ca724SWolfgang Denkyou can type 4663 c609719bSwdenk 4664 c609719bSwdenk CROSS_COMPILE=ppc_8xx- MAKEALL 4665 c609719bSwdenk 4666 c609719bSwdenkor to build on a native PowerPC system you can type 4667 c609719bSwdenk 4668 c609719bSwdenk CROSS_COMPILE=' ' MAKEALL 4669 c609719bSwdenk 4670 218ca724SWolfgang DenkWhen using the MAKEALL script, the default behaviour is to build 4671 218ca724SWolfgang DenkU-Boot in the source directory. This location can be changed by 4672 218ca724SWolfgang Denksetting the BUILD_DIR environment variable. Also, for each target 4673 218ca724SWolfgang Denkbuilt, the MAKEALL script saves two log files (<target>.ERR and 4674 218ca724SWolfgang Denk<target>.MAKEALL) in the <source dir>/LOG directory. This default 4675 218ca724SWolfgang Denklocation can be changed by setting the MAKEALL_LOGDIR environment 4676 218ca724SWolfgang Denkvariable. For example: 4677 baf31249SMarian Balakowicz 4678 baf31249SMarian Balakowicz export BUILD_DIR=/tmp/build 4679 baf31249SMarian Balakowicz export MAKEALL_LOGDIR=/tmp/log 4680 baf31249SMarian Balakowicz CROSS_COMPILE=ppc_8xx- MAKEALL 4681 baf31249SMarian Balakowicz 4682 218ca724SWolfgang DenkWith the above settings build objects are saved in the /tmp/build, 4683 218ca724SWolfgang Denklog files are saved in the /tmp/log and the source tree remains clean 4684 218ca724SWolfgang Denkduring the whole build process. 4685 baf31249SMarian Balakowicz 4686 baf31249SMarian Balakowicz 4687 c609719bSwdenkSee also "U-Boot Porting Guide" below. 4688 c609719bSwdenk 4689 c609719bSwdenk 4690 c609719bSwdenkMonitor Commands - Overview: 4691 c609719bSwdenk============================ 4692 c609719bSwdenk 4693 c609719bSwdenkgo - start application at address 'addr' 4694 c609719bSwdenkrun - run commands in an environment variable 4695 c609719bSwdenkbootm - boot application image from memory 4696 c609719bSwdenkbootp - boot image via network using BootP/TFTP protocol 4697 44f074c7SMarek Vasutbootz - boot zImage from memory 4698 c609719bSwdenktftpboot- boot image via network using TFTP protocol 4699 c609719bSwdenk and env variables "ipaddr" and "serverip" 4700 c609719bSwdenk (and eventually "gatewayip") 4701 1fb7cd49SSimon Glasstftpput - upload a file via network using TFTP protocol 4702 c609719bSwdenkrarpboot- boot image via network using RARP/TFTP protocol 4703 c609719bSwdenkdiskboot- boot from IDE devicebootd - boot default, i.e., run 'bootcmd' 4704 c609719bSwdenkloads - load S-Record file over serial line 4705 c609719bSwdenkloadb - load binary file over serial line (kermit mode) 4706 c609719bSwdenkmd - memory display 4707 c609719bSwdenkmm - memory modify (auto-incrementing) 4708 c609719bSwdenknm - memory modify (constant address) 4709 c609719bSwdenkmw - memory write (fill) 4710 c609719bSwdenkcp - memory copy 4711 c609719bSwdenkcmp - memory compare 4712 c609719bSwdenkcrc32 - checksum calculation 4713 0f89c54bSPeter Tyseri2c - I2C sub-system 4714 c609719bSwdenksspi - SPI utility commands 4715 c609719bSwdenkbase - print or set address offset 4716 c609719bSwdenkprintenv- print environment variables 4717 c609719bSwdenksetenv - set environment variables 4718 c609719bSwdenksaveenv - save environment variables to persistent storage 4719 c609719bSwdenkprotect - enable or disable FLASH write protection 4720 c609719bSwdenkerase - erase FLASH memory 4721 c609719bSwdenkflinfo - print FLASH memory information 4722 10635afaSKarl O. Pincnand - NAND memory operations (see doc/README.nand) 4723 c609719bSwdenkbdinfo - print Board Info structure 4724 c609719bSwdenkiminfo - print header information for application image 4725 c609719bSwdenkconinfo - print console devices and informations 4726 c609719bSwdenkide - IDE sub-system 4727 c609719bSwdenkloop - infinite loop on address range 4728 56523f12Swdenkloopw - infinite write loop on address range 4729 c609719bSwdenkmtest - simple RAM test 4730 c609719bSwdenkicache - enable or disable instruction cache 4731 c609719bSwdenkdcache - enable or disable data cache 4732 c609719bSwdenkreset - Perform RESET of the CPU 4733 c609719bSwdenkecho - echo args to console 4734 c609719bSwdenkversion - print monitor version 4735 c609719bSwdenkhelp - print online help 4736 c609719bSwdenk? - alias for 'help' 4737 c609719bSwdenk 4738 c609719bSwdenk 4739 c609719bSwdenkMonitor Commands - Detailed Description: 4740 c609719bSwdenk======================================== 4741 c609719bSwdenk 4742 c609719bSwdenkTODO. 4743 c609719bSwdenk 4744 c609719bSwdenkFor now: just type "help <command>". 4745 c609719bSwdenk 4746 c609719bSwdenk 4747 c609719bSwdenkEnvironment Variables: 4748 c609719bSwdenk====================== 4749 c609719bSwdenk 4750 c609719bSwdenkU-Boot supports user configuration using Environment Variables which 4751 c609719bSwdenkcan be made persistent by saving to Flash memory. 4752 c609719bSwdenk 4753 c609719bSwdenkEnvironment Variables are set using "setenv", printed using 4754 c609719bSwdenk"printenv", and saved to Flash using "saveenv". Using "setenv" 4755 c609719bSwdenkwithout a value can be used to delete a variable from the 4756 c609719bSwdenkenvironment. As long as you don't save the environment you are 4757 c609719bSwdenkworking with an in-memory copy. In case the Flash area containing the 4758 c609719bSwdenkenvironment is erased by accident, a default environment is provided. 4759 c609719bSwdenk 4760 c96f86eeSWolfgang DenkSome configuration options can be set using Environment Variables. 4761 c96f86eeSWolfgang Denk 4762 c96f86eeSWolfgang DenkList of environment variables (most likely not complete): 4763 c609719bSwdenk 4764 c609719bSwdenk baudrate - see CONFIG_BAUDRATE 4765 c609719bSwdenk 4766 c609719bSwdenk bootdelay - see CONFIG_BOOTDELAY 4767 c609719bSwdenk 4768 c609719bSwdenk bootcmd - see CONFIG_BOOTCOMMAND 4769 c609719bSwdenk 4770 c609719bSwdenk bootargs - Boot arguments when booting an RTOS image 4771 c609719bSwdenk 4772 c609719bSwdenk bootfile - Name of the image to load with TFTP 4773 c609719bSwdenk 4774 7d721e34SBartlomiej Sieka bootm_low - Memory range available for image processing in the bootm 4775 7d721e34SBartlomiej Sieka command can be restricted. This variable is given as 4776 7d721e34SBartlomiej Sieka a hexadecimal number and defines lowest address allowed 4777 7d721e34SBartlomiej Sieka for use by the bootm command. See also "bootm_size" 4778 7d721e34SBartlomiej Sieka environment variable. Address defined by "bootm_low" is 4779 7d721e34SBartlomiej Sieka also the base of the initial memory mapping for the Linux 4780 c3624e6eSGrant Likely kernel -- see the description of CONFIG_SYS_BOOTMAPSZ and 4781 c3624e6eSGrant Likely bootm_mapsize. 4782 c3624e6eSGrant Likely 4783 c3624e6eSGrant Likely bootm_mapsize - Size of the initial memory mapping for the Linux kernel. 4784 c3624e6eSGrant Likely This variable is given as a hexadecimal number and it 4785 c3624e6eSGrant Likely defines the size of the memory region starting at base 4786 c3624e6eSGrant Likely address bootm_low that is accessible by the Linux kernel 4787 c3624e6eSGrant Likely during early boot. If unset, CONFIG_SYS_BOOTMAPSZ is used 4788 c3624e6eSGrant Likely as the default value if it is defined, and bootm_size is 4789 c3624e6eSGrant Likely used otherwise. 4790 7d721e34SBartlomiej Sieka 4791 7d721e34SBartlomiej Sieka bootm_size - Memory range available for image processing in the bootm 4792 7d721e34SBartlomiej Sieka command can be restricted. This variable is given as 4793 7d721e34SBartlomiej Sieka a hexadecimal number and defines the size of the region 4794 7d721e34SBartlomiej Sieka allowed for use by the bootm command. See also "bootm_low" 4795 7d721e34SBartlomiej Sieka environment variable. 4796 7d721e34SBartlomiej Sieka 4797 4bae9090SBartlomiej Sieka updatefile - Location of the software update file on a TFTP server, used 4798 4bae9090SBartlomiej Sieka by the automatic software update feature. Please refer to 4799 4bae9090SBartlomiej Sieka documentation in doc/README.update for more details. 4800 4bae9090SBartlomiej Sieka 4801 c609719bSwdenk autoload - if set to "no" (any string beginning with 'n'), 4802 c609719bSwdenk "bootp" will just load perform a lookup of the 4803 c609719bSwdenk configuration from the BOOTP server, but not try to 4804 c609719bSwdenk load any image using TFTP 4805 c609719bSwdenk 4806 c609719bSwdenk autostart - if set to "yes", an image loaded using the "bootp", 4807 c609719bSwdenk "rarpboot", "tftpboot" or "diskboot" commands will 4808 c609719bSwdenk be automatically started (by internally calling 4809 c609719bSwdenk "bootm") 4810 c609719bSwdenk 4811 4a6fd34bSwdenk If set to "no", a standalone image passed to the 4812 4a6fd34bSwdenk "bootm" command will be copied to the load address 4813 4a6fd34bSwdenk (and eventually uncompressed), but NOT be started. 4814 4a6fd34bSwdenk This can be used to load and uncompress arbitrary 4815 4a6fd34bSwdenk data. 4816 4a6fd34bSwdenk 4817 a28afca5SDavid A. Long fdt_high - if set this restricts the maximum address that the 4818 a28afca5SDavid A. Long flattened device tree will be copied into upon boot. 4819 fa34f6b2SShawn Guo For example, if you have a system with 1 GB memory 4820 fa34f6b2SShawn Guo at physical address 0x10000000, while Linux kernel 4821 fa34f6b2SShawn Guo only recognizes the first 704 MB as low memory, you 4822 fa34f6b2SShawn Guo may need to set fdt_high as 0x3C000000 to have the 4823 fa34f6b2SShawn Guo device tree blob be copied to the maximum address 4824 fa34f6b2SShawn Guo of the 704 MB low memory, so that Linux kernel can 4825 fa34f6b2SShawn Guo access it during the boot procedure. 4826 fa34f6b2SShawn Guo 4827 a28afca5SDavid A. Long If this is set to the special value 0xFFFFFFFF then 4828 a28afca5SDavid A. Long the fdt will not be copied at all on boot. For this 4829 a28afca5SDavid A. Long to work it must reside in writable memory, have 4830 a28afca5SDavid A. Long sufficient padding on the end of it for u-boot to 4831 a28afca5SDavid A. Long add the information it needs into it, and the memory 4832 a28afca5SDavid A. Long must be accessible by the kernel. 4833 a28afca5SDavid A. Long 4834 eea63e05SSimon Glass fdtcontroladdr- if set this is the address of the control flattened 4835 eea63e05SSimon Glass device tree used by U-Boot when CONFIG_OF_CONTROL is 4836 eea63e05SSimon Glass defined. 4837 eea63e05SSimon Glass 4838 17ea1177Swdenk i2cfast - (PPC405GP|PPC405EP only) 4839 17ea1177Swdenk if set to 'y' configures Linux I2C driver for fast 4840 17ea1177Swdenk mode (400kHZ). This environment variable is used in 4841 17ea1177Swdenk initialization code. So, for changes to be effective 4842 17ea1177Swdenk it must be saved and board must be reset. 4843 17ea1177Swdenk 4844 c609719bSwdenk initrd_high - restrict positioning of initrd images: 4845 c609719bSwdenk If this variable is not set, initrd images will be 4846 c609719bSwdenk copied to the highest possible address in RAM; this 4847 c609719bSwdenk is usually what you want since it allows for 4848 c609719bSwdenk maximum initrd size. If for some reason you want to 4849 c609719bSwdenk make sure that the initrd image is loaded below the 4850 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_BOOTMAPSZ limit, you can set this environment 4851 c609719bSwdenk variable to a value of "no" or "off" or "0". 4852 c609719bSwdenk Alternatively, you can set it to a maximum upper 4853 c609719bSwdenk address to use (U-Boot will still check that it 4854 c609719bSwdenk does not overwrite the U-Boot stack and data). 4855 c609719bSwdenk 4856 c609719bSwdenk For instance, when you have a system with 16 MB 4857 7152b1d0Swdenk RAM, and want to reserve 4 MB from use by Linux, 4858 c609719bSwdenk you can do this by adding "mem=12M" to the value of 4859 c609719bSwdenk the "bootargs" variable. However, now you must make 4860 7152b1d0Swdenk sure that the initrd image is placed in the first 4861 c609719bSwdenk 12 MB as well - this can be done with 4862 c609719bSwdenk 4863 c609719bSwdenk setenv initrd_high 00c00000 4864 c609719bSwdenk 4865 38b99261Swdenk If you set initrd_high to 0xFFFFFFFF, this is an 4866 38b99261Swdenk indication to U-Boot that all addresses are legal 4867 38b99261Swdenk for the Linux kernel, including addresses in flash 4868 38b99261Swdenk memory. In this case U-Boot will NOT COPY the 4869 38b99261Swdenk ramdisk at all. This may be useful to reduce the 4870 38b99261Swdenk boot time on your system, but requires that this 4871 38b99261Swdenk feature is supported by your Linux kernel. 4872 38b99261Swdenk 4873 c609719bSwdenk ipaddr - IP address; needed for tftpboot command 4874 c609719bSwdenk 4875 c609719bSwdenk loadaddr - Default load address for commands like "bootp", 4876 dc7c9a1aSwdenk "rarpboot", "tftpboot", "loadb" or "diskboot" 4877 c609719bSwdenk 4878 c609719bSwdenk loads_echo - see CONFIG_LOADS_ECHO 4879 c609719bSwdenk 4880 c609719bSwdenk serverip - TFTP server IP address; needed for tftpboot command 4881 c609719bSwdenk 4882 c609719bSwdenk bootretry - see CONFIG_BOOT_RETRY_TIME 4883 c609719bSwdenk 4884 c609719bSwdenk bootdelaykey - see CONFIG_AUTOBOOT_DELAY_STR 4885 c609719bSwdenk 4886 c609719bSwdenk bootstopkey - see CONFIG_AUTOBOOT_STOP_STR 4887 c609719bSwdenk 4888 e2a53458SMike Frysinger ethprime - controls which interface is used first. 4889 a3d991bdSwdenk 4890 e2a53458SMike Frysinger ethact - controls which interface is currently active. 4891 e2a53458SMike Frysinger For example you can do the following 4892 a3d991bdSwdenk 4893 48690d80SHeiko Schocher => setenv ethact FEC 4894 48690d80SHeiko Schocher => ping 192.168.0.1 # traffic sent on FEC 4895 48690d80SHeiko Schocher => setenv ethact SCC 4896 48690d80SHeiko Schocher => ping 10.0.0.1 # traffic sent on SCC 4897 a3d991bdSwdenk 4898 e1692577SMatthias Fuchs ethrotate - When set to "no" U-Boot does not go through all 4899 e1692577SMatthias Fuchs available network interfaces. 4900 e1692577SMatthias Fuchs It just stays at the currently selected interface. 4901 e1692577SMatthias Fuchs 4902 a3d991bdSwdenk netretry - When set to "no" each network operation will 4903 a3d991bdSwdenk either succeed or fail without retrying. 4904 6e592385Swdenk When set to "once" the network operation will 4905 6e592385Swdenk fail when all the available network interfaces 4906 6e592385Swdenk are tried once without success. 4907 a3d991bdSwdenk Useful on scripts which control the retry operation 4908 a3d991bdSwdenk themselves. 4909 a3d991bdSwdenk 4910 b4e2f89dSJean-Christophe PLAGNIOL-VILLARD npe_ucode - set load address for the NPE microcode 4911 a1cf027aSJean-Christophe PLAGNIOL-VILLARD 4912 8d51aacdSSimon Glass silent_linux - If set then linux will be told to boot silently, by 4913 8d51aacdSSimon Glass changing the console to be empty. If "yes" it will be 4914 8d51aacdSSimon Glass made silent. If "no" it will not be made silent. If 4915 8d51aacdSSimon Glass unset, then it will be made silent if the U-Boot console 4916 8d51aacdSSimon Glass is silent. 4917 8d51aacdSSimon Glass 4918 28cb9375SWolfgang Denk tftpsrcport - If this is set, the value is used for TFTP's 4919 ecb0ccd9SWolfgang Denk UDP source port. 4920 ecb0ccd9SWolfgang Denk 4921 28cb9375SWolfgang Denk tftpdstport - If this is set, the value is used for TFTP's UDP 4922 28cb9375SWolfgang Denk destination port instead of the Well Know Port 69. 4923 28cb9375SWolfgang Denk 4924 c96f86eeSWolfgang Denk tftpblocksize - Block size to use for TFTP transfers; if not set, 4925 c96f86eeSWolfgang Denk we use the TFTP server's default block size 4926 c96f86eeSWolfgang Denk 4927 c96f86eeSWolfgang Denk tftptimeout - Retransmission timeout for TFTP packets (in milli- 4928 c96f86eeSWolfgang Denk seconds, minimum value is 1000 = 1 second). Defines 4929 c96f86eeSWolfgang Denk when a packet is considered to be lost so it has to 4930 c96f86eeSWolfgang Denk be retransmitted. The default is 5000 = 5 seconds. 4931 c96f86eeSWolfgang Denk Lowering this value may make downloads succeed 4932 c96f86eeSWolfgang Denk faster in networks with high packet loss rates or 4933 c96f86eeSWolfgang Denk with unreliable TFTP servers. 4934 c96f86eeSWolfgang Denk 4935 a3d991bdSwdenk vlan - When set to a value < 4095 the traffic over 4936 11ccc33fSMarcel Ziswiler Ethernet is encapsulated/received over 802.1q 4937 a3d991bdSwdenk VLAN tagged frames. 4938 c609719bSwdenk 4939 dc0b7b0eSJason HobbsThe following image location variables contain the location of images 4940 dc0b7b0eSJason Hobbsused in booting. The "Image" column gives the role of the image and is 4941 dc0b7b0eSJason Hobbsnot an environment variable name. The other columns are environment 4942 dc0b7b0eSJason Hobbsvariable names. "File Name" gives the name of the file on a TFTP 4943 dc0b7b0eSJason Hobbsserver, "RAM Address" gives the location in RAM the image will be 4944 dc0b7b0eSJason Hobbsloaded to, and "Flash Location" gives the image's address in NOR 4945 dc0b7b0eSJason Hobbsflash or offset in NAND flash. 4946 dc0b7b0eSJason Hobbs 4947 dc0b7b0eSJason Hobbs*Note* - these variables don't have to be defined for all boards, some 4948 dc0b7b0eSJason Hobbsboards currenlty use other variables for these purposes, and some 4949 dc0b7b0eSJason Hobbsboards use these variables for other purposes. 4950 dc0b7b0eSJason Hobbs 4951 dc0b7b0eSJason HobbsImage File Name RAM Address Flash Location 4952 dc0b7b0eSJason Hobbs----- --------- ----------- -------------- 4953 dc0b7b0eSJason Hobbsu-boot u-boot u-boot_addr_r u-boot_addr 4954 dc0b7b0eSJason HobbsLinux kernel bootfile kernel_addr_r kernel_addr 4955 dc0b7b0eSJason Hobbsdevice tree blob fdtfile fdt_addr_r fdt_addr 4956 dc0b7b0eSJason Hobbsramdisk ramdiskfile ramdisk_addr_r ramdisk_addr 4957 dc0b7b0eSJason Hobbs 4958 c609719bSwdenkThe following environment variables may be used and automatically 4959 c609719bSwdenkupdated by the network boot commands ("bootp" and "rarpboot"), 4960 c609719bSwdenkdepending the information provided by your boot server: 4961 c609719bSwdenk 4962 c609719bSwdenk bootfile - see above 4963 c609719bSwdenk dnsip - IP address of your Domain Name Server 4964 fe389a82Sstroese dnsip2 - IP address of your secondary Domain Name Server 4965 c609719bSwdenk gatewayip - IP address of the Gateway (Router) to use 4966 c609719bSwdenk hostname - Target hostname 4967 c609719bSwdenk ipaddr - see above 4968 c609719bSwdenk netmask - Subnet Mask 4969 c609719bSwdenk rootpath - Pathname of the root filesystem on the NFS server 4970 c609719bSwdenk serverip - see above 4971 c609719bSwdenk 4972 c609719bSwdenk 4973 c609719bSwdenkThere are two special Environment Variables: 4974 c609719bSwdenk 4975 c609719bSwdenk serial# - contains hardware identification information such 4976 c609719bSwdenk as type string and/or serial number 4977 c609719bSwdenk ethaddr - Ethernet address 4978 c609719bSwdenk 4979 c609719bSwdenkThese variables can be set only once (usually during manufacturing of 4980 c609719bSwdenkthe board). U-Boot refuses to delete or overwrite these variables 4981 c609719bSwdenkonce they have been set once. 4982 c609719bSwdenk 4983 c609719bSwdenk 4984 c1551ea8SstroeseFurther special Environment Variables: 4985 c1551ea8Sstroese 4986 c1551ea8Sstroese ver - Contains the U-Boot version string as printed 4987 c1551ea8Sstroese with the "version" command. This variable is 4988 c1551ea8Sstroese readonly (see CONFIG_VERSION_VARIABLE). 4989 c1551ea8Sstroese 4990 c1551ea8Sstroese 4991 c609719bSwdenkPlease note that changes to some configuration parameters may take 4992 c609719bSwdenkonly effect after the next boot (yes, that's just like Windoze :-). 4993 c609719bSwdenk 4994 c609719bSwdenk 4995 170ab110SJoe HershbergerCallback functions for environment variables: 4996 170ab110SJoe Hershberger--------------------------------------------- 4997 170ab110SJoe Hershberger 4998 170ab110SJoe HershbergerFor some environment variables, the behavior of u-boot needs to change 4999 170ab110SJoe Hershbergerwhen their values are changed. This functionailty allows functions to 5000 170ab110SJoe Hershbergerbe associated with arbitrary variables. On creation, overwrite, or 5001 170ab110SJoe Hershbergerdeletion, the callback will provide the opportunity for some side 5002 170ab110SJoe Hershbergereffect to happen or for the change to be rejected. 5003 170ab110SJoe Hershberger 5004 170ab110SJoe HershbergerThe callbacks are named and associated with a function using the 5005 170ab110SJoe HershbergerU_BOOT_ENV_CALLBACK macro in your board or driver code. 5006 170ab110SJoe Hershberger 5007 170ab110SJoe HershbergerThese callbacks are associated with variables in one of two ways. The 5008 170ab110SJoe Hershbergerstatic list can be added to by defining CONFIG_ENV_CALLBACK_LIST_STATIC 5009 170ab110SJoe Hershbergerin the board configuration to a string that defines a list of 5010 170ab110SJoe Hershbergerassociations. The list must be in the following format: 5011 170ab110SJoe Hershberger 5012 170ab110SJoe Hershberger entry = variable_name[:callback_name] 5013 170ab110SJoe Hershberger list = entry[,list] 5014 170ab110SJoe Hershberger 5015 170ab110SJoe HershbergerIf the callback name is not specified, then the callback is deleted. 5016 170ab110SJoe HershbergerSpaces are also allowed anywhere in the list. 5017 170ab110SJoe Hershberger 5018 170ab110SJoe HershbergerCallbacks can also be associated by defining the ".callbacks" variable 5019 170ab110SJoe Hershbergerwith the same list format above. Any association in ".callbacks" will 5020 170ab110SJoe Hershbergeroverride any association in the static list. You can define 5021 170ab110SJoe HershbergerCONFIG_ENV_CALLBACK_LIST_DEFAULT to a list (string) to define the 5022 170ab110SJoe Hershberger".callbacks" envirnoment variable in the default or embedded environment. 5023 170ab110SJoe Hershberger 5024 170ab110SJoe Hershberger 5025 f07771ccSwdenkCommand Line Parsing: 5026 f07771ccSwdenk===================== 5027 f07771ccSwdenk 5028 f07771ccSwdenkThere are two different command line parsers available with U-Boot: 5029 7152b1d0Swdenkthe old "simple" one, and the much more powerful "hush" shell: 5030 f07771ccSwdenk 5031 f07771ccSwdenkOld, simple command line parser: 5032 f07771ccSwdenk-------------------------------- 5033 f07771ccSwdenk 5034 f07771ccSwdenk- supports environment variables (through setenv / saveenv commands) 5035 f07771ccSwdenk- several commands on one line, separated by ';' 5036 fe126d8bSWolfgang Denk- variable substitution using "... ${name} ..." syntax 5037 f07771ccSwdenk- special characters ('$', ';') can be escaped by prefixing with '\', 5038 f07771ccSwdenk for example: 5039 fe126d8bSWolfgang Denk setenv bootcmd bootm \${address} 5040 f07771ccSwdenk- You can also escape text by enclosing in single apostrophes, for example: 5041 f07771ccSwdenk setenv addip 'setenv bootargs $bootargs ip=$ipaddr:$serverip:$gatewayip:$netmask:$hostname::off' 5042 f07771ccSwdenk 5043 f07771ccSwdenkHush shell: 5044 f07771ccSwdenk----------- 5045 f07771ccSwdenk 5046 f07771ccSwdenk- similar to Bourne shell, with control structures like 5047 f07771ccSwdenk if...then...else...fi, for...do...done; while...do...done, 5048 f07771ccSwdenk until...do...done, ... 5049 f07771ccSwdenk- supports environment ("global") variables (through setenv / saveenv 5050 f07771ccSwdenk commands) and local shell variables (through standard shell syntax 5051 f07771ccSwdenk "name=value"); only environment variables can be used with "run" 5052 f07771ccSwdenk command 5053 f07771ccSwdenk 5054 f07771ccSwdenkGeneral rules: 5055 f07771ccSwdenk-------------- 5056 f07771ccSwdenk 5057 f07771ccSwdenk(1) If a command line (or an environment variable executed by a "run" 5058 f07771ccSwdenk command) contains several commands separated by semicolon, and 5059 f07771ccSwdenk one of these commands fails, then the remaining commands will be 5060 f07771ccSwdenk executed anyway. 5061 f07771ccSwdenk 5062 f07771ccSwdenk(2) If you execute several variables with one call to run (i. e. 5063 11ccc33fSMarcel Ziswiler calling run with a list of variables as arguments), any failing 5064 f07771ccSwdenk command will cause "run" to terminate, i. e. the remaining 5065 f07771ccSwdenk variables are not executed. 5066 f07771ccSwdenk 5067 c609719bSwdenkNote for Redundant Ethernet Interfaces: 5068 c609719bSwdenk======================================= 5069 c609719bSwdenk 5070 11ccc33fSMarcel ZiswilerSome boards come with redundant Ethernet interfaces; U-Boot supports 5071 c609719bSwdenksuch configurations and is capable of automatic selection of a 5072 7152b1d0Swdenk"working" interface when needed. MAC assignment works as follows: 5073 c609719bSwdenk 5074 c609719bSwdenkNetwork interfaces are numbered eth0, eth1, eth2, ... Corresponding 5075 c609719bSwdenkMAC addresses can be stored in the environment as "ethaddr" (=>eth0), 5076 c609719bSwdenk"eth1addr" (=>eth1), "eth2addr", ... 5077 c609719bSwdenk 5078 c609719bSwdenkIf the network interface stores some valid MAC address (for instance 5079 c609719bSwdenkin SROM), this is used as default address if there is NO correspon- 5080 c609719bSwdenkding setting in the environment; if the corresponding environment 5081 c609719bSwdenkvariable is set, this overrides the settings in the card; that means: 5082 c609719bSwdenk 5083 c609719bSwdenko If the SROM has a valid MAC address, and there is no address in the 5084 c609719bSwdenk environment, the SROM's address is used. 5085 c609719bSwdenk 5086 c609719bSwdenko If there is no valid address in the SROM, and a definition in the 5087 c609719bSwdenk environment exists, then the value from the environment variable is 5088 c609719bSwdenk used. 5089 c609719bSwdenk 5090 c609719bSwdenko If both the SROM and the environment contain a MAC address, and 5091 c609719bSwdenk both addresses are the same, this MAC address is used. 5092 c609719bSwdenk 5093 c609719bSwdenko If both the SROM and the environment contain a MAC address, and the 5094 c609719bSwdenk addresses differ, the value from the environment is used and a 5095 c609719bSwdenk warning is printed. 5096 c609719bSwdenk 5097 c609719bSwdenko If neither SROM nor the environment contain a MAC address, an error 5098 c609719bSwdenk is raised. 5099 c609719bSwdenk 5100 ecee9324SBen WarrenIf Ethernet drivers implement the 'write_hwaddr' function, valid MAC addresses 5101 ecee9324SBen Warrenwill be programmed into hardware as part of the initialization process. This 5102 ecee9324SBen Warrenmay be skipped by setting the appropriate 'ethmacskip' environment variable. 5103 ecee9324SBen WarrenThe naming convention is as follows: 5104 ecee9324SBen Warren"ethmacskip" (=>eth0), "eth1macskip" (=>eth1) etc. 5105 c609719bSwdenk 5106 c609719bSwdenkImage Formats: 5107 c609719bSwdenk============== 5108 c609719bSwdenk 5109 3310c549SMarian BalakowiczU-Boot is capable of booting (and performing other auxiliary operations on) 5110 3310c549SMarian Balakowiczimages in two formats: 5111 3310c549SMarian Balakowicz 5112 3310c549SMarian BalakowiczNew uImage format (FIT) 5113 3310c549SMarian Balakowicz----------------------- 5114 3310c549SMarian Balakowicz 5115 3310c549SMarian BalakowiczFlexible and powerful format based on Flattened Image Tree -- FIT (similar 5116 3310c549SMarian Balakowiczto Flattened Device Tree). It allows the use of images with multiple 5117 3310c549SMarian Balakowiczcomponents (several kernels, ramdisks, etc.), with contents protected by 5118 3310c549SMarian BalakowiczSHA1, MD5 or CRC32. More details are found in the doc/uImage.FIT directory. 5119 3310c549SMarian Balakowicz 5120 3310c549SMarian Balakowicz 5121 3310c549SMarian BalakowiczOld uImage format 5122 3310c549SMarian Balakowicz----------------- 5123 3310c549SMarian Balakowicz 5124 3310c549SMarian BalakowiczOld image format is based on binary files which can be basically anything, 5125 3310c549SMarian Balakowiczpreceded by a special header; see the definitions in include/image.h for 5126 3310c549SMarian Balakowiczdetails; basically, the header defines the following image properties: 5127 c609719bSwdenk 5128 c609719bSwdenk* Target Operating System (Provisions for OpenBSD, NetBSD, FreeBSD, 5129 c609719bSwdenk 4.4BSD, Linux, SVR4, Esix, Solaris, Irix, SCO, Dell, NCR, VxWorks, 5130 f5ed9e39SPeter Tyser LynxOS, pSOS, QNX, RTEMS, INTEGRITY; 5131 f5ed9e39SPeter Tyser Currently supported: Linux, NetBSD, VxWorks, QNX, RTEMS, LynxOS, 5132 f5ed9e39SPeter Tyser INTEGRITY). 5133 7b64fef3SWolfgang Denk* Target CPU Architecture (Provisions for Alpha, ARM, AVR32, Intel x86, 5134 afc1ce82SMacpaul Lin IA64, MIPS, NDS32, Nios II, PowerPC, IBM S390, SuperH, Sparc, Sparc 64 Bit; 5135 afc1ce82SMacpaul Lin Currently supported: ARM, AVR32, Intel x86, MIPS, NDS32, Nios II, PowerPC). 5136 c29fdfc1Swdenk* Compression Type (uncompressed, gzip, bzip2) 5137 c609719bSwdenk* Load Address 5138 c609719bSwdenk* Entry Point 5139 c609719bSwdenk* Image Name 5140 c609719bSwdenk* Image Timestamp 5141 c609719bSwdenk 5142 c609719bSwdenkThe header is marked by a special Magic Number, and both the header 5143 c609719bSwdenkand the data portions of the image are secured against corruption by 5144 c609719bSwdenkCRC32 checksums. 5145 c609719bSwdenk 5146 c609719bSwdenk 5147 c609719bSwdenkLinux Support: 5148 c609719bSwdenk============== 5149 c609719bSwdenk 5150 c609719bSwdenkAlthough U-Boot should support any OS or standalone application 5151 7152b1d0Swdenkeasily, the main focus has always been on Linux during the design of 5152 c609719bSwdenkU-Boot. 5153 c609719bSwdenk 5154 c609719bSwdenkU-Boot includes many features that so far have been part of some 5155 c609719bSwdenkspecial "boot loader" code within the Linux kernel. Also, any 5156 c609719bSwdenk"initrd" images to be used are no longer part of one big Linux image; 5157 c609719bSwdenkinstead, kernel and "initrd" are separate images. This implementation 5158 7152b1d0Swdenkserves several purposes: 5159 c609719bSwdenk 5160 c609719bSwdenk- the same features can be used for other OS or standalone 5161 c609719bSwdenk applications (for instance: using compressed images to reduce the 5162 c609719bSwdenk Flash memory footprint) 5163 c609719bSwdenk 5164 c609719bSwdenk- it becomes much easier to port new Linux kernel versions because 5165 7152b1d0Swdenk lots of low-level, hardware dependent stuff are done by U-Boot 5166 c609719bSwdenk 5167 c609719bSwdenk- the same Linux kernel image can now be used with different "initrd" 5168 c609719bSwdenk images; of course this also means that different kernel images can 5169 c609719bSwdenk be run with the same "initrd". This makes testing easier (you don't 5170 c609719bSwdenk have to build a new "zImage.initrd" Linux image when you just 5171 c609719bSwdenk change a file in your "initrd"). Also, a field-upgrade of the 5172 c609719bSwdenk software is easier now. 5173 c609719bSwdenk 5174 c609719bSwdenk 5175 c609719bSwdenkLinux HOWTO: 5176 c609719bSwdenk============ 5177 c609719bSwdenk 5178 c609719bSwdenkPorting Linux to U-Boot based systems: 5179 c609719bSwdenk--------------------------------------- 5180 c609719bSwdenk 5181 c609719bSwdenkU-Boot cannot save you from doing all the necessary modifications to 5182 c609719bSwdenkconfigure the Linux device drivers for use with your target hardware 5183 c609719bSwdenk(no, we don't intend to provide a full virtual machine interface to 5184 c609719bSwdenkLinux :-). 5185 c609719bSwdenk 5186 a47a12beSStefan RoeseBut now you can ignore ALL boot loader code (in arch/powerpc/mbxboot). 5187 c609719bSwdenk 5188 c609719bSwdenkJust make sure your machine specific header file (for instance 5189 c609719bSwdenkinclude/asm-ppc/tqm8xx.h) includes the same definition of the Board 5190 1dc30693SMarkus HeidelbergInformation structure as we define in include/asm-<arch>/u-boot.h, 5191 1dc30693SMarkus Heidelbergand make sure that your definition of IMAP_ADDR uses the same value 5192 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARDas your U-Boot configuration in CONFIG_SYS_IMMR. 5193 c609719bSwdenk 5194 c609719bSwdenk 5195 c609719bSwdenkConfiguring the Linux kernel: 5196 c609719bSwdenk----------------------------- 5197 c609719bSwdenk 5198 c609719bSwdenkNo specific requirements for U-Boot. Make sure you have some root 5199 c609719bSwdenkdevice (initial ramdisk, NFS) for your target system. 5200 c609719bSwdenk 5201 c609719bSwdenk 5202 c609719bSwdenkBuilding a Linux Image: 5203 c609719bSwdenk----------------------- 5204 c609719bSwdenk 5205 24ee89b9SwdenkWith U-Boot, "normal" build targets like "zImage" or "bzImage" are 5206 24ee89b9Swdenknot used. If you use recent kernel source, a new build target 5207 24ee89b9Swdenk"uImage" will exist which automatically builds an image usable by 5208 24ee89b9SwdenkU-Boot. Most older kernels also have support for a "pImage" target, 5209 24ee89b9Swdenkwhich was introduced for our predecessor project PPCBoot and uses a 5210 24ee89b9Swdenk100% compatible format. 5211 c609719bSwdenk 5212 c609719bSwdenkExample: 5213 c609719bSwdenk 5214 c609719bSwdenk make TQM850L_config 5215 c609719bSwdenk make oldconfig 5216 c609719bSwdenk make dep 5217 24ee89b9Swdenk make uImage 5218 c609719bSwdenk 5219 24ee89b9SwdenkThe "uImage" build target uses a special tool (in 'tools/mkimage') to 5220 24ee89b9Swdenkencapsulate a compressed Linux kernel image with header information, 5221 24ee89b9SwdenkCRC32 checksum etc. for use with U-Boot. This is what we are doing: 5222 c609719bSwdenk 5223 24ee89b9Swdenk* build a standard "vmlinux" kernel image (in ELF binary format): 5224 24ee89b9Swdenk 5225 24ee89b9Swdenk* convert the kernel into a raw binary image: 5226 24ee89b9Swdenk 5227 24ee89b9Swdenk ${CROSS_COMPILE}-objcopy -O binary \ 5228 24ee89b9Swdenk -R .note -R .comment \ 5229 24ee89b9Swdenk -S vmlinux linux.bin 5230 24ee89b9Swdenk 5231 24ee89b9Swdenk* compress the binary image: 5232 24ee89b9Swdenk 5233 24ee89b9Swdenk gzip -9 linux.bin 5234 24ee89b9Swdenk 5235 24ee89b9Swdenk* package compressed binary image for U-Boot: 5236 24ee89b9Swdenk 5237 24ee89b9Swdenk mkimage -A ppc -O linux -T kernel -C gzip \ 5238 24ee89b9Swdenk -a 0 -e 0 -n "Linux Kernel Image" \ 5239 24ee89b9Swdenk -d linux.bin.gz uImage 5240 24ee89b9Swdenk 5241 24ee89b9Swdenk 5242 24ee89b9SwdenkThe "mkimage" tool can also be used to create ramdisk images for use 5243 24ee89b9Swdenkwith U-Boot, either separated from the Linux kernel image, or 5244 24ee89b9Swdenkcombined into one file. "mkimage" encapsulates the images with a 64 5245 24ee89b9Swdenkbyte header containing information about target architecture, 5246 24ee89b9Swdenkoperating system, image type, compression method, entry points, time 5247 24ee89b9Swdenkstamp, CRC32 checksums, etc. 5248 24ee89b9Swdenk 5249 24ee89b9Swdenk"mkimage" can be called in two ways: to verify existing images and 5250 24ee89b9Swdenkprint the header information, or to build new images. 5251 c609719bSwdenk 5252 c609719bSwdenkIn the first form (with "-l" option) mkimage lists the information 5253 c609719bSwdenkcontained in the header of an existing U-Boot image; this includes 5254 c609719bSwdenkchecksum verification: 5255 c609719bSwdenk 5256 c609719bSwdenk tools/mkimage -l image 5257 c609719bSwdenk -l ==> list image header information 5258 c609719bSwdenk 5259 c609719bSwdenkThe second form (with "-d" option) is used to build a U-Boot image 5260 c609719bSwdenkfrom a "data file" which is used as image payload: 5261 c609719bSwdenk 5262 c609719bSwdenk tools/mkimage -A arch -O os -T type -C comp -a addr -e ep \ 5263 c609719bSwdenk -n name -d data_file image 5264 c609719bSwdenk -A ==> set architecture to 'arch' 5265 c609719bSwdenk -O ==> set operating system to 'os' 5266 c609719bSwdenk -T ==> set image type to 'type' 5267 c609719bSwdenk -C ==> set compression type 'comp' 5268 c609719bSwdenk -a ==> set load address to 'addr' (hex) 5269 c609719bSwdenk -e ==> set entry point to 'ep' (hex) 5270 c609719bSwdenk -n ==> set image name to 'name' 5271 c609719bSwdenk -d ==> use image data from 'datafile' 5272 c609719bSwdenk 5273 69459791SwdenkRight now, all Linux kernels for PowerPC systems use the same load 5274 69459791Swdenkaddress (0x00000000), but the entry point address depends on the 5275 69459791Swdenkkernel version: 5276 c609719bSwdenk 5277 c609719bSwdenk- 2.2.x kernels have the entry point at 0x0000000C, 5278 24ee89b9Swdenk- 2.3.x and later kernels have the entry point at 0x00000000. 5279 c609719bSwdenk 5280 c609719bSwdenkSo a typical call to build a U-Boot image would read: 5281 c609719bSwdenk 5282 24ee89b9Swdenk -> tools/mkimage -n '2.4.4 kernel for TQM850L' \ 5283 24ee89b9Swdenk > -A ppc -O linux -T kernel -C gzip -a 0 -e 0 \ 5284 a47a12beSStefan Roese > -d /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux.gz \ 5285 24ee89b9Swdenk > examples/uImage.TQM850L 5286 24ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5287 c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5288 c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5289 c609719bSwdenk Data Size: 335725 Bytes = 327.86 kB = 0.32 MB 5290 c609719bSwdenk Load Address: 0x00000000 5291 24ee89b9Swdenk Entry Point: 0x00000000 5292 c609719bSwdenk 5293 c609719bSwdenkTo verify the contents of the image (or check for corruption): 5294 c609719bSwdenk 5295 24ee89b9Swdenk -> tools/mkimage -l examples/uImage.TQM850L 5296 24ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5297 c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5298 c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5299 c609719bSwdenk Data Size: 335725 Bytes = 327.86 kB = 0.32 MB 5300 c609719bSwdenk Load Address: 0x00000000 5301 24ee89b9Swdenk Entry Point: 0x00000000 5302 c609719bSwdenk 5303 c609719bSwdenkNOTE: for embedded systems where boot time is critical you can trade 5304 c609719bSwdenkspeed for memory and install an UNCOMPRESSED image instead: this 5305 c609719bSwdenkneeds more space in Flash, but boots much faster since it does not 5306 c609719bSwdenkneed to be uncompressed: 5307 c609719bSwdenk 5308 a47a12beSStefan Roese -> gunzip /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux.gz 5309 24ee89b9Swdenk -> tools/mkimage -n '2.4.4 kernel for TQM850L' \ 5310 24ee89b9Swdenk > -A ppc -O linux -T kernel -C none -a 0 -e 0 \ 5311 a47a12beSStefan Roese > -d /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux \ 5312 24ee89b9Swdenk > examples/uImage.TQM850L-uncompressed 5313 24ee89b9Swdenk Image Name: 2.4.4 kernel for TQM850L 5314 c609719bSwdenk Created: Wed Jul 19 02:34:59 2000 5315 c609719bSwdenk Image Type: PowerPC Linux Kernel Image (uncompressed) 5316 c609719bSwdenk Data Size: 792160 Bytes = 773.59 kB = 0.76 MB 5317 c609719bSwdenk Load Address: 0x00000000 5318 24ee89b9Swdenk Entry Point: 0x00000000 5319 c609719bSwdenk 5320 c609719bSwdenk 5321 c609719bSwdenkSimilar you can build U-Boot images from a 'ramdisk.image.gz' file 5322 c609719bSwdenkwhen your kernel is intended to use an initial ramdisk: 5323 c609719bSwdenk 5324 c609719bSwdenk -> tools/mkimage -n 'Simple Ramdisk Image' \ 5325 c609719bSwdenk > -A ppc -O linux -T ramdisk -C gzip \ 5326 c609719bSwdenk > -d /LinuxPPC/images/SIMPLE-ramdisk.image.gz examples/simple-initrd 5327 c609719bSwdenk Image Name: Simple Ramdisk Image 5328 c609719bSwdenk Created: Wed Jan 12 14:01:50 2000 5329 c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5330 c609719bSwdenk Data Size: 566530 Bytes = 553.25 kB = 0.54 MB 5331 c609719bSwdenk Load Address: 0x00000000 5332 c609719bSwdenk Entry Point: 0x00000000 5333 c609719bSwdenk 5334 a804b5ceSGuilherme Maciel FerreiraThe "dumpimage" is a tool to disassemble images built by mkimage. Its "-i" 5335 a804b5ceSGuilherme Maciel Ferreiraoption performs the converse operation of the mkimage's second form (the "-d" 5336 a804b5ceSGuilherme Maciel Ferreiraoption). Given an image built by mkimage, the dumpimage extracts a "data file" 5337 a804b5ceSGuilherme Maciel Ferreirafrom the image: 5338 a804b5ceSGuilherme Maciel Ferreira 5339 a804b5ceSGuilherme Maciel Ferreira tools/dumpimage -i image -p position data_file 5340 a804b5ceSGuilherme Maciel Ferreira -i ==> extract from the 'image' a specific 'data_file', \ 5341 a804b5ceSGuilherme Maciel Ferreira indexed by 'position' 5342 a804b5ceSGuilherme Maciel Ferreira 5343 c609719bSwdenk 5344 c609719bSwdenkInstalling a Linux Image: 5345 c609719bSwdenk------------------------- 5346 c609719bSwdenk 5347 c609719bSwdenkTo downloading a U-Boot image over the serial (console) interface, 5348 c609719bSwdenkyou must convert the image to S-Record format: 5349 c609719bSwdenk 5350 c609719bSwdenk objcopy -I binary -O srec examples/image examples/image.srec 5351 c609719bSwdenk 5352 c609719bSwdenkThe 'objcopy' does not understand the information in the U-Boot 5353 c609719bSwdenkimage header, so the resulting S-Record file will be relative to 5354 c609719bSwdenkaddress 0x00000000. To load it to a given address, you need to 5355 c609719bSwdenkspecify the target address as 'offset' parameter with the 'loads' 5356 c609719bSwdenkcommand. 5357 c609719bSwdenk 5358 c609719bSwdenkExample: install the image to address 0x40100000 (which on the 5359 c609719bSwdenkTQM8xxL is in the first Flash bank): 5360 c609719bSwdenk 5361 c609719bSwdenk => erase 40100000 401FFFFF 5362 c609719bSwdenk 5363 c609719bSwdenk .......... done 5364 c609719bSwdenk Erased 8 sectors 5365 c609719bSwdenk 5366 c609719bSwdenk => loads 40100000 5367 c609719bSwdenk ## Ready for S-Record download ... 5368 c609719bSwdenk ~>examples/image.srec 5369 c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 12 13 ... 5370 c609719bSwdenk ... 5371 c609719bSwdenk 15989 15990 15991 15992 5372 c609719bSwdenk [file transfer complete] 5373 c609719bSwdenk [connected] 5374 c609719bSwdenk ## Start Addr = 0x00000000 5375 c609719bSwdenk 5376 c609719bSwdenk 5377 c609719bSwdenkYou can check the success of the download using the 'iminfo' command; 5378 c609719bSwdenkthis includes a checksum verification so you can be sure no data 5379 c609719bSwdenkcorruption happened: 5380 c609719bSwdenk 5381 c609719bSwdenk => imi 40100000 5382 c609719bSwdenk 5383 c609719bSwdenk ## Checking Image at 40100000 ... 5384 c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5385 c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5386 c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5387 c609719bSwdenk Load Address: 00000000 5388 c609719bSwdenk Entry Point: 0000000c 5389 c609719bSwdenk Verifying Checksum ... OK 5390 c609719bSwdenk 5391 c609719bSwdenk 5392 c609719bSwdenkBoot Linux: 5393 c609719bSwdenk----------- 5394 c609719bSwdenk 5395 c609719bSwdenkThe "bootm" command is used to boot an application that is stored in 5396 c609719bSwdenkmemory (RAM or Flash). In case of a Linux kernel image, the contents 5397 c609719bSwdenkof the "bootargs" environment variable is passed to the kernel as 5398 c609719bSwdenkparameters. You can check and modify this variable using the 5399 c609719bSwdenk"printenv" and "setenv" commands: 5400 c609719bSwdenk 5401 c609719bSwdenk 5402 c609719bSwdenk => printenv bootargs 5403 c609719bSwdenk bootargs=root=/dev/ram 5404 c609719bSwdenk 5405 c609719bSwdenk => setenv bootargs root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5406 c609719bSwdenk 5407 c609719bSwdenk => printenv bootargs 5408 c609719bSwdenk bootargs=root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5409 c609719bSwdenk 5410 c609719bSwdenk => bootm 40020000 5411 c609719bSwdenk ## Booting Linux kernel at 40020000 ... 5412 c609719bSwdenk Image Name: 2.2.13 for NFS on TQM850L 5413 c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5414 c609719bSwdenk Data Size: 381681 Bytes = 372 kB = 0 MB 5415 c609719bSwdenk Load Address: 00000000 5416 c609719bSwdenk Entry Point: 0000000c 5417 c609719bSwdenk Verifying Checksum ... OK 5418 c609719bSwdenk Uncompressing Kernel Image ... OK 5419 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 5420 c609719bSwdenk Boot arguments: root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 5421 c609719bSwdenk time_init: decrementer frequency = 187500000/60 5422 c609719bSwdenk Calibrating delay loop... 49.77 BogoMIPS 5423 c609719bSwdenk Memory: 15208k available (700k kernel code, 444k data, 32k init) [c0000000,c1000000] 5424 c609719bSwdenk ... 5425 c609719bSwdenk 5426 11ccc33fSMarcel ZiswilerIf you want to boot a Linux kernel with initial RAM disk, you pass 5427 7152b1d0Swdenkthe memory addresses of both the kernel and the initrd image (PPBCOOT 5428 c609719bSwdenkformat!) to the "bootm" command: 5429 c609719bSwdenk 5430 c609719bSwdenk => imi 40100000 40200000 5431 c609719bSwdenk 5432 c609719bSwdenk ## Checking Image at 40100000 ... 5433 c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5434 c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5435 c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5436 c609719bSwdenk Load Address: 00000000 5437 c609719bSwdenk Entry Point: 0000000c 5438 c609719bSwdenk Verifying Checksum ... OK 5439 c609719bSwdenk 5440 c609719bSwdenk ## Checking Image at 40200000 ... 5441 c609719bSwdenk Image Name: Simple Ramdisk Image 5442 c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5443 c609719bSwdenk Data Size: 566530 Bytes = 553 kB = 0 MB 5444 c609719bSwdenk Load Address: 00000000 5445 c609719bSwdenk Entry Point: 00000000 5446 c609719bSwdenk Verifying Checksum ... OK 5447 c609719bSwdenk 5448 c609719bSwdenk => bootm 40100000 40200000 5449 c609719bSwdenk ## Booting Linux kernel at 40100000 ... 5450 c609719bSwdenk Image Name: 2.2.13 for initrd on TQM850L 5451 c609719bSwdenk Image Type: PowerPC Linux Kernel Image (gzip compressed) 5452 c609719bSwdenk Data Size: 335725 Bytes = 327 kB = 0 MB 5453 c609719bSwdenk Load Address: 00000000 5454 c609719bSwdenk Entry Point: 0000000c 5455 c609719bSwdenk Verifying Checksum ... OK 5456 c609719bSwdenk Uncompressing Kernel Image ... OK 5457 c609719bSwdenk ## Loading RAMDisk Image at 40200000 ... 5458 c609719bSwdenk Image Name: Simple Ramdisk Image 5459 c609719bSwdenk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) 5460 c609719bSwdenk Data Size: 566530 Bytes = 553 kB = 0 MB 5461 c609719bSwdenk Load Address: 00000000 5462 c609719bSwdenk Entry Point: 00000000 5463 c609719bSwdenk Verifying Checksum ... OK 5464 c609719bSwdenk Loading Ramdisk ... OK 5465 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 5466 c609719bSwdenk Boot arguments: root=/dev/ram 5467 c609719bSwdenk time_init: decrementer frequency = 187500000/60 5468 c609719bSwdenk Calibrating delay loop... 49.77 BogoMIPS 5469 c609719bSwdenk ... 5470 c609719bSwdenk RAMDISK: Compressed image found at block 0 5471 c609719bSwdenk VFS: Mounted root (ext2 filesystem). 5472 c609719bSwdenk 5473 c609719bSwdenk bash# 5474 c609719bSwdenk 5475 0267768eSMatthew McClintockBoot Linux and pass a flat device tree: 5476 0267768eSMatthew McClintock----------- 5477 0267768eSMatthew McClintock 5478 0267768eSMatthew McClintockFirst, U-Boot must be compiled with the appropriate defines. See the section 5479 0267768eSMatthew McClintocktitled "Linux Kernel Interface" above for a more in depth explanation. The 5480 0267768eSMatthew McClintockfollowing is an example of how to start a kernel and pass an updated 5481 0267768eSMatthew McClintockflat device tree: 5482 0267768eSMatthew McClintock 5483 0267768eSMatthew McClintock=> print oftaddr 5484 0267768eSMatthew McClintockoftaddr=0x300000 5485 0267768eSMatthew McClintock=> print oft 5486 0267768eSMatthew McClintockoft=oftrees/mpc8540ads.dtb 5487 0267768eSMatthew McClintock=> tftp $oftaddr $oft 5488 0267768eSMatthew McClintockSpeed: 1000, full duplex 5489 0267768eSMatthew McClintockUsing TSEC0 device 5490 0267768eSMatthew McClintockTFTP from server 192.168.1.1; our IP address is 192.168.1.101 5491 0267768eSMatthew McClintockFilename 'oftrees/mpc8540ads.dtb'. 5492 0267768eSMatthew McClintockLoad address: 0x300000 5493 0267768eSMatthew McClintockLoading: # 5494 0267768eSMatthew McClintockdone 5495 0267768eSMatthew McClintockBytes transferred = 4106 (100a hex) 5496 0267768eSMatthew McClintock=> tftp $loadaddr $bootfile 5497 0267768eSMatthew McClintockSpeed: 1000, full duplex 5498 0267768eSMatthew McClintockUsing TSEC0 device 5499 0267768eSMatthew McClintockTFTP from server 192.168.1.1; our IP address is 192.168.1.2 5500 0267768eSMatthew McClintockFilename 'uImage'. 5501 0267768eSMatthew McClintockLoad address: 0x200000 5502 0267768eSMatthew McClintockLoading:############ 5503 0267768eSMatthew McClintockdone 5504 0267768eSMatthew McClintockBytes transferred = 1029407 (fb51f hex) 5505 0267768eSMatthew McClintock=> print loadaddr 5506 0267768eSMatthew McClintockloadaddr=200000 5507 0267768eSMatthew McClintock=> print oftaddr 5508 0267768eSMatthew McClintockoftaddr=0x300000 5509 0267768eSMatthew McClintock=> bootm $loadaddr - $oftaddr 5510 0267768eSMatthew McClintock## Booting image at 00200000 ... 5511 0267768eSMatthew McClintock Image Name: Linux-2.6.17-dirty 5512 0267768eSMatthew McClintock Image Type: PowerPC Linux Kernel Image (gzip compressed) 5513 0267768eSMatthew McClintock Data Size: 1029343 Bytes = 1005.2 kB 5514 0267768eSMatthew McClintock Load Address: 00000000 5515 0267768eSMatthew McClintock Entry Point: 00000000 5516 0267768eSMatthew McClintock Verifying Checksum ... OK 5517 0267768eSMatthew McClintock Uncompressing Kernel Image ... OK 5518 0267768eSMatthew McClintockBooting using flat device tree at 0x300000 5519 0267768eSMatthew McClintockUsing MPC85xx ADS machine description 5520 0267768eSMatthew McClintockMemory CAM mapping: CAM0=256Mb, CAM1=256Mb, CAM2=0Mb residual: 0Mb 5521 0267768eSMatthew McClintock[snip] 5522 0267768eSMatthew McClintock 5523 0267768eSMatthew McClintock 5524 6069ff26SwdenkMore About U-Boot Image Types: 5525 6069ff26Swdenk------------------------------ 5526 6069ff26Swdenk 5527 6069ff26SwdenkU-Boot supports the following image types: 5528 6069ff26Swdenk 5529 6069ff26Swdenk "Standalone Programs" are directly runnable in the environment 5530 6069ff26Swdenk provided by U-Boot; it is expected that (if they behave 5531 6069ff26Swdenk well) you can continue to work in U-Boot after return from 5532 6069ff26Swdenk the Standalone Program. 5533 6069ff26Swdenk "OS Kernel Images" are usually images of some Embedded OS which 5534 6069ff26Swdenk will take over control completely. Usually these programs 5535 6069ff26Swdenk will install their own set of exception handlers, device 5536 6069ff26Swdenk drivers, set up the MMU, etc. - this means, that you cannot 5537 6069ff26Swdenk expect to re-enter U-Boot except by resetting the CPU. 5538 6069ff26Swdenk "RAMDisk Images" are more or less just data blocks, and their 5539 6069ff26Swdenk parameters (address, size) are passed to an OS kernel that is 5540 6069ff26Swdenk being started. 5541 6069ff26Swdenk "Multi-File Images" contain several images, typically an OS 5542 6069ff26Swdenk (Linux) kernel image and one or more data images like 5543 6069ff26Swdenk RAMDisks. This construct is useful for instance when you want 5544 6069ff26Swdenk to boot over the network using BOOTP etc., where the boot 5545 6069ff26Swdenk server provides just a single image file, but you want to get 5546 6069ff26Swdenk for instance an OS kernel and a RAMDisk image. 5547 6069ff26Swdenk 5548 6069ff26Swdenk "Multi-File Images" start with a list of image sizes, each 5549 6069ff26Swdenk image size (in bytes) specified by an "uint32_t" in network 5550 6069ff26Swdenk byte order. This list is terminated by an "(uint32_t)0". 5551 6069ff26Swdenk Immediately after the terminating 0 follow the images, one by 5552 6069ff26Swdenk one, all aligned on "uint32_t" boundaries (size rounded up to 5553 6069ff26Swdenk a multiple of 4 bytes). 5554 6069ff26Swdenk 5555 6069ff26Swdenk "Firmware Images" are binary images containing firmware (like 5556 6069ff26Swdenk U-Boot or FPGA images) which usually will be programmed to 5557 6069ff26Swdenk flash memory. 5558 6069ff26Swdenk 5559 6069ff26Swdenk "Script files" are command sequences that will be executed by 5560 6069ff26Swdenk U-Boot's command interpreter; this feature is especially 5561 6069ff26Swdenk useful when you configure U-Boot to use a real shell (hush) 5562 6069ff26Swdenk as command interpreter. 5563 6069ff26Swdenk 5564 44f074c7SMarek VasutBooting the Linux zImage: 5565 44f074c7SMarek Vasut------------------------- 5566 44f074c7SMarek Vasut 5567 44f074c7SMarek VasutOn some platforms, it's possible to boot Linux zImage. This is done 5568 44f074c7SMarek Vasutusing the "bootz" command. The syntax of "bootz" command is the same 5569 44f074c7SMarek Vasutas the syntax of "bootm" command. 5570 44f074c7SMarek Vasut 5571 8ac28563STom RiniNote, defining the CONFIG_SUPPORT_RAW_INITRD allows user to supply 5572 017e1f3fSMarek Vasutkernel with raw initrd images. The syntax is slightly different, the 5573 017e1f3fSMarek Vasutaddress of the initrd must be augmented by it's size, in the following 5574 017e1f3fSMarek Vasutformat: "<initrd addres>:<initrd size>". 5575 017e1f3fSMarek Vasut 5576 c609719bSwdenk 5577 c609719bSwdenkStandalone HOWTO: 5578 c609719bSwdenk================= 5579 c609719bSwdenk 5580 c609719bSwdenkOne of the features of U-Boot is that you can dynamically load and 5581 c609719bSwdenkrun "standalone" applications, which can use some resources of 5582 c609719bSwdenkU-Boot like console I/O functions or interrupt services. 5583 c609719bSwdenk 5584 c609719bSwdenkTwo simple examples are included with the sources: 5585 c609719bSwdenk 5586 c609719bSwdenk"Hello World" Demo: 5587 c609719bSwdenk------------------- 5588 c609719bSwdenk 5589 c609719bSwdenk'examples/hello_world.c' contains a small "Hello World" Demo 5590 c609719bSwdenkapplication; it is automatically compiled when you build U-Boot. 5591 c609719bSwdenkIt's configured to run at address 0x00040004, so you can play with it 5592 c609719bSwdenklike that: 5593 c609719bSwdenk 5594 c609719bSwdenk => loads 5595 c609719bSwdenk ## Ready for S-Record download ... 5596 c609719bSwdenk ~>examples/hello_world.srec 5597 c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 ... 5598 c609719bSwdenk [file transfer complete] 5599 c609719bSwdenk [connected] 5600 c609719bSwdenk ## Start Addr = 0x00040004 5601 c609719bSwdenk 5602 c609719bSwdenk => go 40004 Hello World! This is a test. 5603 c609719bSwdenk ## Starting application at 0x00040004 ... 5604 c609719bSwdenk Hello World 5605 c609719bSwdenk argc = 7 5606 c609719bSwdenk argv[0] = "40004" 5607 c609719bSwdenk argv[1] = "Hello" 5608 c609719bSwdenk argv[2] = "World!" 5609 c609719bSwdenk argv[3] = "This" 5610 c609719bSwdenk argv[4] = "is" 5611 c609719bSwdenk argv[5] = "a" 5612 c609719bSwdenk argv[6] = "test." 5613 c609719bSwdenk argv[7] = "<NULL>" 5614 c609719bSwdenk Hit any key to exit ... 5615 c609719bSwdenk 5616 c609719bSwdenk ## Application terminated, rc = 0x0 5617 c609719bSwdenk 5618 c609719bSwdenkAnother example, which demonstrates how to register a CPM interrupt 5619 c609719bSwdenkhandler with the U-Boot code, can be found in 'examples/timer.c'. 5620 c609719bSwdenkHere, a CPM timer is set up to generate an interrupt every second. 5621 c609719bSwdenkThe interrupt service routine is trivial, just printing a '.' 5622 c609719bSwdenkcharacter, but this is just a demo program. The application can be 5623 c609719bSwdenkcontrolled by the following keys: 5624 c609719bSwdenk 5625 c609719bSwdenk ? - print current values og the CPM Timer registers 5626 c609719bSwdenk b - enable interrupts and start timer 5627 c609719bSwdenk e - stop timer and disable interrupts 5628 c609719bSwdenk q - quit application 5629 c609719bSwdenk 5630 c609719bSwdenk => loads 5631 c609719bSwdenk ## Ready for S-Record download ... 5632 c609719bSwdenk ~>examples/timer.srec 5633 c609719bSwdenk 1 2 3 4 5 6 7 8 9 10 11 ... 5634 c609719bSwdenk [file transfer complete] 5635 c609719bSwdenk [connected] 5636 c609719bSwdenk ## Start Addr = 0x00040004 5637 c609719bSwdenk 5638 c609719bSwdenk => go 40004 5639 c609719bSwdenk ## Starting application at 0x00040004 ... 5640 c609719bSwdenk TIMERS=0xfff00980 5641 c609719bSwdenk Using timer 1 5642 c609719bSwdenk tgcr @ 0xfff00980, tmr @ 0xfff00990, trr @ 0xfff00994, tcr @ 0xfff00998, tcn @ 0xfff0099c, ter @ 0xfff009b0 5643 c609719bSwdenk 5644 c609719bSwdenkHit 'b': 5645 c609719bSwdenk [q, b, e, ?] Set interval 1000000 us 5646 c609719bSwdenk Enabling timer 5647 c609719bSwdenkHit '?': 5648 c609719bSwdenk [q, b, e, ?] ........ 5649 c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0xef6, ter=0x0 5650 c609719bSwdenkHit '?': 5651 c609719bSwdenk [q, b, e, ?] . 5652 c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x2ad4, ter=0x0 5653 c609719bSwdenkHit '?': 5654 c609719bSwdenk [q, b, e, ?] . 5655 c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x1efc, ter=0x0 5656 c609719bSwdenkHit '?': 5657 c609719bSwdenk [q, b, e, ?] . 5658 c609719bSwdenk tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x169d, ter=0x0 5659 c609719bSwdenkHit 'e': 5660 c609719bSwdenk [q, b, e, ?] ...Stopping timer 5661 c609719bSwdenkHit 'q': 5662 c609719bSwdenk [q, b, e, ?] ## Application terminated, rc = 0x0 5663 c609719bSwdenk 5664 c609719bSwdenk 5665 85ec0bccSwdenkMinicom warning: 5666 85ec0bccSwdenk================ 5667 85ec0bccSwdenk 5668 7152b1d0SwdenkOver time, many people have reported problems when trying to use the 5669 85ec0bccSwdenk"minicom" terminal emulation program for serial download. I (wd) 5670 85ec0bccSwdenkconsider minicom to be broken, and recommend not to use it. Under 5671 f07771ccSwdenkUnix, I recommend to use C-Kermit for general purpose use (and 5672 85ec0bccSwdenkespecially for kermit binary protocol download ("loadb" command), and 5673 e53515a2SKarl O. Pincuse "cu" for S-Record download ("loads" command). See 5674 e53515a2SKarl O. Pinchttp://www.denx.de/wiki/view/DULG/SystemSetup#Section_4.3. 5675 e53515a2SKarl O. Pincfor help with kermit. 5676 e53515a2SKarl O. Pinc 5677 85ec0bccSwdenk 5678 52f52c14SwdenkNevertheless, if you absolutely want to use it try adding this 5679 52f52c14Swdenkconfiguration to your "File transfer protocols" section: 5680 52f52c14Swdenk 5681 52f52c14Swdenk Name Program Name U/D FullScr IO-Red. Multi 5682 52f52c14Swdenk X kermit /usr/bin/kermit -i -l %l -s Y U Y N N 5683 52f52c14Swdenk Y kermit /usr/bin/kermit -i -l %l -r N D Y N N 5684 52f52c14Swdenk 5685 52f52c14Swdenk 5686 c609719bSwdenkNetBSD Notes: 5687 c609719bSwdenk============= 5688 c609719bSwdenk 5689 c609719bSwdenkStarting at version 0.9.2, U-Boot supports NetBSD both as host 5690 c609719bSwdenk(build U-Boot) and target system (boots NetBSD/mpc8xx). 5691 c609719bSwdenk 5692 c609719bSwdenkBuilding requires a cross environment; it is known to work on 5693 c609719bSwdenkNetBSD/i386 with the cross-powerpc-netbsd-1.3 package (you will also 5694 c609719bSwdenkneed gmake since the Makefiles are not compatible with BSD make). 5695 c609719bSwdenkNote that the cross-powerpc package does not install include files; 5696 c609719bSwdenkattempting to build U-Boot will fail because <machine/ansi.h> is 5697 c609719bSwdenkmissing. This file has to be installed and patched manually: 5698 c609719bSwdenk 5699 c609719bSwdenk # cd /usr/pkg/cross/powerpc-netbsd/include 5700 c609719bSwdenk # mkdir powerpc 5701 c609719bSwdenk # ln -s powerpc machine 5702 c609719bSwdenk # cp /usr/src/sys/arch/powerpc/include/ansi.h powerpc/ansi.h 5703 c609719bSwdenk # ${EDIT} powerpc/ansi.h ## must remove __va_list, _BSD_VA_LIST 5704 c609719bSwdenk 5705 c609719bSwdenkNative builds *don't* work due to incompatibilities between native 5706 c609719bSwdenkand U-Boot include files. 5707 c609719bSwdenk 5708 c609719bSwdenkBooting assumes that (the first part of) the image booted is a 5709 c609719bSwdenkstage-2 loader which in turn loads and then invokes the kernel 5710 c609719bSwdenkproper. Loader sources will eventually appear in the NetBSD source 5711 c609719bSwdenktree (probably in sys/arc/mpc8xx/stand/u-boot_stage2/); in the 5712 2a8af187Swdenkmeantime, see ftp://ftp.denx.de/pub/u-boot/ppcboot_stage2.tar.gz 5713 c609719bSwdenk 5714 c609719bSwdenk 5715 c609719bSwdenkImplementation Internals: 5716 c609719bSwdenk========================= 5717 c609719bSwdenk 5718 c609719bSwdenkThe following is not intended to be a complete description of every 5719 c609719bSwdenkimplementation detail. However, it should help to understand the 5720 c609719bSwdenkinner workings of U-Boot and make it easier to port it to custom 5721 c609719bSwdenkhardware. 5722 c609719bSwdenk 5723 c609719bSwdenk 5724 c609719bSwdenkInitial Stack, Global Data: 5725 c609719bSwdenk--------------------------- 5726 c609719bSwdenk 5727 c609719bSwdenkThe implementation of U-Boot is complicated by the fact that U-Boot 5728 c609719bSwdenkstarts running out of ROM (flash memory), usually without access to 5729 c609719bSwdenksystem RAM (because the memory controller is not initialized yet). 5730 c609719bSwdenkThis means that we don't have writable Data or BSS segments, and BSS 5731 c609719bSwdenkis not initialized as zero. To be able to get a C environment working 5732 c609719bSwdenkat all, we have to allocate at least a minimal stack. Implementation 5733 c609719bSwdenkoptions for this are defined and restricted by the CPU used: Some CPU 5734 c609719bSwdenkmodels provide on-chip memory (like the IMMR area on MPC8xx and 5735 c609719bSwdenkMPC826x processors), on others (parts of) the data cache can be 5736 c609719bSwdenklocked as (mis-) used as memory, etc. 5737 c609719bSwdenk 5738 7152b1d0Swdenk Chris Hallinan posted a good summary of these issues to the 5739 0668236bSWolfgang Denk U-Boot mailing list: 5740 43d9616cSwdenk 5741 43d9616cSwdenk Subject: RE: [U-Boot-Users] RE: More On Memory Bank x (nothingness)? 5742 43d9616cSwdenk From: "Chris Hallinan" <clh@net1plus.com> 5743 43d9616cSwdenk Date: Mon, 10 Feb 2003 16:43:46 -0500 (22:43 MET) 5744 43d9616cSwdenk ... 5745 43d9616cSwdenk 5746 43d9616cSwdenk Correct me if I'm wrong, folks, but the way I understand it 5747 43d9616cSwdenk is this: Using DCACHE as initial RAM for Stack, etc, does not 5748 43d9616cSwdenk require any physical RAM backing up the cache. The cleverness 5749 43d9616cSwdenk is that the cache is being used as a temporary supply of 5750 43d9616cSwdenk necessary storage before the SDRAM controller is setup. It's 5751 11ccc33fSMarcel Ziswiler beyond the scope of this list to explain the details, but you 5752 43d9616cSwdenk can see how this works by studying the cache architecture and 5753 43d9616cSwdenk operation in the architecture and processor-specific manuals. 5754 43d9616cSwdenk 5755 43d9616cSwdenk OCM is On Chip Memory, which I believe the 405GP has 4K. It 5756 43d9616cSwdenk is another option for the system designer to use as an 5757 11ccc33fSMarcel Ziswiler initial stack/RAM area prior to SDRAM being available. Either 5758 43d9616cSwdenk option should work for you. Using CS 4 should be fine if your 5759 43d9616cSwdenk board designers haven't used it for something that would 5760 43d9616cSwdenk cause you grief during the initial boot! It is frequently not 5761 43d9616cSwdenk used. 5762 43d9616cSwdenk 5763 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARD CONFIG_SYS_INIT_RAM_ADDR should be somewhere that won't interfere 5764 43d9616cSwdenk with your processor/board/system design. The default value 5765 43d9616cSwdenk you will find in any recent u-boot distribution in 5766 8a316c9bSStefan Roese walnut.h should work for you. I'd set it to a value larger 5767 43d9616cSwdenk than your SDRAM module. If you have a 64MB SDRAM module, set 5768 43d9616cSwdenk it above 400_0000. Just make sure your board has no resources 5769 43d9616cSwdenk that are supposed to respond to that address! That code in 5770 43d9616cSwdenk start.S has been around a while and should work as is when 5771 43d9616cSwdenk you get the config right. 5772 43d9616cSwdenk 5773 43d9616cSwdenk -Chris Hallinan 5774 43d9616cSwdenk DS4.COM, Inc. 5775 43d9616cSwdenk 5776 c609719bSwdenkIt is essential to remember this, since it has some impact on the C 5777 c609719bSwdenkcode for the initialization procedures: 5778 c609719bSwdenk 5779 c609719bSwdenk* Initialized global data (data segment) is read-only. Do not attempt 5780 c609719bSwdenk to write it. 5781 c609719bSwdenk 5782 11ccc33fSMarcel Ziswiler* Do not use any uninitialized global data (or implicitely initialized 5783 c609719bSwdenk as zero data - BSS segment) at all - this is undefined, initiali- 5784 7152b1d0Swdenk zation is performed later (when relocating to RAM). 5785 c609719bSwdenk 5786 c609719bSwdenk* Stack space is very limited. Avoid big data buffers or things like 5787 c609719bSwdenk that. 5788 c609719bSwdenk 5789 c609719bSwdenkHaving only the stack as writable memory limits means we cannot use 5790 c609719bSwdenknormal global data to share information beween the code. But it 5791 c609719bSwdenkturned out that the implementation of U-Boot can be greatly 5792 c609719bSwdenksimplified by making a global data structure (gd_t) available to all 5793 c609719bSwdenkfunctions. We could pass a pointer to this data as argument to _all_ 5794 c609719bSwdenkfunctions, but this would bloat the code. Instead we use a feature of 5795 c609719bSwdenkthe GCC compiler (Global Register Variables) to share the data: we 5796 c609719bSwdenkplace a pointer (gd) to the global data into a register which we 5797 c609719bSwdenkreserve for this purpose. 5798 c609719bSwdenk 5799 7152b1d0SwdenkWhen choosing a register for such a purpose we are restricted by the 5800 c609719bSwdenkrelevant (E)ABI specifications for the current architecture, and by 5801 c609719bSwdenkGCC's implementation. 5802 c609719bSwdenk 5803 c609719bSwdenkFor PowerPC, the following registers have specific use: 5804 c609719bSwdenk R1: stack pointer 5805 e7670f6cSWolfgang Denk R2: reserved for system use 5806 c609719bSwdenk R3-R4: parameter passing and return values 5807 c609719bSwdenk R5-R10: parameter passing 5808 c609719bSwdenk R13: small data area pointer 5809 c609719bSwdenk R30: GOT pointer 5810 c609719bSwdenk R31: frame pointer 5811 c609719bSwdenk 5812 e6bee808SJoakim Tjernlund (U-Boot also uses R12 as internal GOT pointer. r12 5813 e6bee808SJoakim Tjernlund is a volatile register so r12 needs to be reset when 5814 e6bee808SJoakim Tjernlund going back and forth between asm and C) 5815 c609719bSwdenk 5816 e7670f6cSWolfgang Denk ==> U-Boot will use R2 to hold a pointer to the global data 5817 c609719bSwdenk 5818 c609719bSwdenk Note: on PPC, we could use a static initializer (since the 5819 c609719bSwdenk address of the global data structure is known at compile time), 5820 c609719bSwdenk but it turned out that reserving a register results in somewhat 5821 c609719bSwdenk smaller code - although the code savings are not that big (on 5822 c609719bSwdenk average for all boards 752 bytes for the whole U-Boot image, 5823 c609719bSwdenk 624 text + 127 data). 5824 c609719bSwdenk 5825 c4db335cSRobin GetzOn Blackfin, the normal C ABI (except for P3) is followed as documented here: 5826 4c58eb55SMike Frysinger http://docs.blackfin.uclinux.org/doku.php?id=application_binary_interface 5827 4c58eb55SMike Frysinger 5828 c4db335cSRobin Getz ==> U-Boot will use P3 to hold a pointer to the global data 5829 4c58eb55SMike Frysinger 5830 c609719bSwdenkOn ARM, the following registers are used: 5831 c609719bSwdenk 5832 c609719bSwdenk R0: function argument word/integer result 5833 c609719bSwdenk R1-R3: function argument word 5834 12eba1b4SJeroen Hofstee R9: platform specific 5835 12eba1b4SJeroen Hofstee R10: stack limit (used only if stack checking is enabled) 5836 c609719bSwdenk R11: argument (frame) pointer 5837 c609719bSwdenk R12: temporary workspace 5838 c609719bSwdenk R13: stack pointer 5839 c609719bSwdenk R14: link register 5840 c609719bSwdenk R15: program counter 5841 c609719bSwdenk 5842 12eba1b4SJeroen Hofstee ==> U-Boot will use R9 to hold a pointer to the global data 5843 12eba1b4SJeroen Hofstee 5844 12eba1b4SJeroen Hofstee Note: on ARM, only R_ARM_RELATIVE relocations are supported. 5845 c609719bSwdenk 5846 0df01fd3SThomas ChouOn Nios II, the ABI is documented here: 5847 0df01fd3SThomas Chou http://www.altera.com/literature/hb/nios2/n2cpu_nii51016.pdf 5848 0df01fd3SThomas Chou 5849 0df01fd3SThomas Chou ==> U-Boot will use gp to hold a pointer to the global data 5850 0df01fd3SThomas Chou 5851 0df01fd3SThomas Chou Note: on Nios II, we give "-G0" option to gcc and don't use gp 5852 0df01fd3SThomas Chou to access small data sections, so gp is free. 5853 0df01fd3SThomas Chou 5854 afc1ce82SMacpaul LinOn NDS32, the following registers are used: 5855 afc1ce82SMacpaul Lin 5856 afc1ce82SMacpaul Lin R0-R1: argument/return 5857 afc1ce82SMacpaul Lin R2-R5: argument 5858 afc1ce82SMacpaul Lin R15: temporary register for assembler 5859 afc1ce82SMacpaul Lin R16: trampoline register 5860 afc1ce82SMacpaul Lin R28: frame pointer (FP) 5861 afc1ce82SMacpaul Lin R29: global pointer (GP) 5862 afc1ce82SMacpaul Lin R30: link register (LP) 5863 afc1ce82SMacpaul Lin R31: stack pointer (SP) 5864 afc1ce82SMacpaul Lin PC: program counter (PC) 5865 afc1ce82SMacpaul Lin 5866 afc1ce82SMacpaul Lin ==> U-Boot will use R10 to hold a pointer to the global data 5867 afc1ce82SMacpaul Lin 5868 d87080b7SWolfgang DenkNOTE: DECLARE_GLOBAL_DATA_PTR must be used with file-global scope, 5869 d87080b7SWolfgang Denkor current versions of GCC may "optimize" the code too much. 5870 c609719bSwdenk 5871 c609719bSwdenkMemory Management: 5872 c609719bSwdenk------------------ 5873 c609719bSwdenk 5874 c609719bSwdenkU-Boot runs in system state and uses physical addresses, i.e. the 5875 c609719bSwdenkMMU is not used either for address mapping nor for memory protection. 5876 c609719bSwdenk 5877 c609719bSwdenkThe available memory is mapped to fixed addresses using the memory 5878 c609719bSwdenkcontroller. In this process, a contiguous block is formed for each 5879 c609719bSwdenkmemory type (Flash, SDRAM, SRAM), even when it consists of several 5880 c609719bSwdenkphysical memory banks. 5881 c609719bSwdenk 5882 c609719bSwdenkU-Boot is installed in the first 128 kB of the first Flash bank (on 5883 c609719bSwdenkTQM8xxL modules this is the range 0x40000000 ... 0x4001FFFF). After 5884 c609719bSwdenkbooting and sizing and initializing DRAM, the code relocates itself 5885 c609719bSwdenkto the upper end of DRAM. Immediately below the U-Boot code some 5886 6d0f6bcfSJean-Christophe PLAGNIOL-VILLARDmemory is reserved for use by malloc() [see CONFIG_SYS_MALLOC_LEN 5887 c609719bSwdenkconfiguration setting]. Below that, a structure with global Board 5888 c609719bSwdenkInfo data is placed, followed by the stack (growing downward). 5889 c609719bSwdenk 5890 c609719bSwdenkAdditionally, some exception handler code is copied to the low 8 kB 5891 c609719bSwdenkof DRAM (0x00000000 ... 0x00001FFF). 5892 c609719bSwdenk 5893 c609719bSwdenkSo a typical memory configuration with 16 MB of DRAM could look like 5894 c609719bSwdenkthis: 5895 c609719bSwdenk 5896 c609719bSwdenk 0x0000 0000 Exception Vector code 5897 c609719bSwdenk : 5898 c609719bSwdenk 0x0000 1FFF 5899 c609719bSwdenk 0x0000 2000 Free for Application Use 5900 c609719bSwdenk : 5901 c609719bSwdenk : 5902 c609719bSwdenk 5903 c609719bSwdenk : 5904 c609719bSwdenk : 5905 c609719bSwdenk 0x00FB FF20 Monitor Stack (Growing downward) 5906 c609719bSwdenk 0x00FB FFAC Board Info Data and permanent copy of global data 5907 c609719bSwdenk 0x00FC 0000 Malloc Arena 5908 c609719bSwdenk : 5909 c609719bSwdenk 0x00FD FFFF 5910 c609719bSwdenk 0x00FE 0000 RAM Copy of Monitor Code 5911 c609719bSwdenk ... eventually: LCD or video framebuffer 5912 c609719bSwdenk ... eventually: pRAM (Protected RAM - unchanged by reset) 5913 c609719bSwdenk 0x00FF FFFF [End of RAM] 5914 c609719bSwdenk 5915 c609719bSwdenk 5916 c609719bSwdenkSystem Initialization: 5917 c609719bSwdenk---------------------- 5918 c609719bSwdenk 5919 c609719bSwdenkIn the reset configuration, U-Boot starts at the reset entry point 5920 11ccc33fSMarcel Ziswiler(on most PowerPC systems at address 0x00000100). Because of the reset 5921 c609719bSwdenkconfiguration for CS0# this is a mirror of the onboard Flash memory. 5922 7152b1d0SwdenkTo be able to re-map memory U-Boot then jumps to its link address. 5923 c609719bSwdenkTo be able to implement the initialization code in C, a (small!) 5924 c609719bSwdenkinitial stack is set up in the internal Dual Ported RAM (in case CPUs 5925 c609719bSwdenkwhich provide such a feature like MPC8xx or MPC8260), or in a locked 5926 c609719bSwdenkpart of the data cache. After that, U-Boot initializes the CPU core, 5927 c609719bSwdenkthe caches and the SIU. 5928 c609719bSwdenk 5929 c609719bSwdenkNext, all (potentially) available memory banks are mapped using a 5930 c609719bSwdenkpreliminary mapping. For example, we put them on 512 MB boundaries 5931 c609719bSwdenk(multiples of 0x20000000: SDRAM on 0x00000000 and 0x20000000, Flash 5932 c609719bSwdenkon 0x40000000 and 0x60000000, SRAM on 0x80000000). Then UPM A is 5933 c609719bSwdenkprogrammed for SDRAM access. Using the temporary configuration, a 5934 c609719bSwdenksimple memory test is run that determines the size of the SDRAM 5935 c609719bSwdenkbanks. 5936 c609719bSwdenk 5937 c609719bSwdenkWhen there is more than one SDRAM bank, and the banks are of 5938 7152b1d0Swdenkdifferent size, the largest is mapped first. For equal size, the first 5939 c609719bSwdenkbank (CS2#) is mapped first. The first mapping is always for address 5940 c609719bSwdenk0x00000000, with any additional banks following immediately to create 5941 c609719bSwdenkcontiguous memory starting from 0. 5942 c609719bSwdenk 5943 c609719bSwdenkThen, the monitor installs itself at the upper end of the SDRAM area 5944 c609719bSwdenkand allocates memory for use by malloc() and for the global Board 5945 c609719bSwdenkInfo data; also, the exception vector code is copied to the low RAM 5946 c609719bSwdenkpages, and the final stack is set up. 5947 c609719bSwdenk 5948 c609719bSwdenkOnly after this relocation will you have a "normal" C environment; 5949 c609719bSwdenkuntil that you are restricted in several ways, mostly because you are 5950 c609719bSwdenkrunning from ROM, and because the code will have to be relocated to a 5951 c609719bSwdenknew address in RAM. 5952 c609719bSwdenk 5953 c609719bSwdenk 5954 c609719bSwdenkU-Boot Porting Guide: 5955 c609719bSwdenk---------------------- 5956 c609719bSwdenk 5957 c609719bSwdenk[Based on messages by Jerry Van Baren in the U-Boot-Users mailing 5958 6aff3115Swdenklist, October 2002] 5959 c609719bSwdenk 5960 c609719bSwdenk 5961 c609719bSwdenkint main(int argc, char *argv[]) 5962 c609719bSwdenk{ 5963 c609719bSwdenk sighandler_t no_more_time; 5964 c609719bSwdenk 5965 c609719bSwdenk signal(SIGALRM, no_more_time); 5966 c609719bSwdenk alarm(PROJECT_DEADLINE - toSec (3 * WEEK)); 5967 c609719bSwdenk 5968 c609719bSwdenk if (available_money > available_manpower) { 5969 6c3fef28SJerry Van Baren Pay consultant to port U-Boot; 5970 c609719bSwdenk return 0; 5971 c609719bSwdenk } 5972 c609719bSwdenk 5973 c609719bSwdenk Download latest U-Boot source; 5974 c609719bSwdenk 5975 0668236bSWolfgang Denk Subscribe to u-boot mailing list; 5976 6aff3115Swdenk 5977 6c3fef28SJerry Van Baren if (clueless) 5978 c609719bSwdenk email("Hi, I am new to U-Boot, how do I get started?"); 5979 c609719bSwdenk 5980 c609719bSwdenk while (learning) { 5981 c609719bSwdenk Read the README file in the top level directory; 5982 7cb22f97Swdenk Read http://www.denx.de/twiki/bin/view/DULG/Manual; 5983 6c3fef28SJerry Van Baren Read applicable doc/*.README; 5984 c609719bSwdenk Read the source, Luke; 5985 6c3fef28SJerry Van Baren /* find . -name "*.[chS]" | xargs grep -i <keyword> */ 5986 c609719bSwdenk } 5987 c609719bSwdenk 5988 6c3fef28SJerry Van Baren if (available_money > toLocalCurrency ($2500)) 5989 6c3fef28SJerry Van Baren Buy a BDI3000; 5990 6c3fef28SJerry Van Baren else 5991 c609719bSwdenk Add a lot of aggravation and time; 5992 c609719bSwdenk 5993 6c3fef28SJerry Van Baren if (a similar board exists) { /* hopefully... */ 5994 6c3fef28SJerry Van Baren cp -a board/<similar> board/<myboard> 5995 6c3fef28SJerry Van Baren cp include/configs/<similar>.h include/configs/<myboard>.h 5996 6c3fef28SJerry Van Baren } else { 5997 c609719bSwdenk Create your own board support subdirectory; 5998 6c3fef28SJerry Van Baren Create your own board include/configs/<myboard>.h file; 5999 6c3fef28SJerry Van Baren } 6000 6c3fef28SJerry Van Baren Edit new board/<myboard> files 6001 6c3fef28SJerry Van Baren Edit new include/configs/<myboard>.h 6002 c609719bSwdenk 6003 6c3fef28SJerry Van Baren while (!accepted) { 6004 c609719bSwdenk while (!running) { 6005 c609719bSwdenk do { 6006 c609719bSwdenk Add / modify source code; 6007 c609719bSwdenk } until (compiles); 6008 c609719bSwdenk Debug; 6009 c609719bSwdenk if (clueless) 6010 c609719bSwdenk email("Hi, I am having problems..."); 6011 c609719bSwdenk } 6012 6c3fef28SJerry Van Baren Send patch file to the U-Boot email list; 6013 6c3fef28SJerry Van Baren if (reasonable critiques) 6014 6c3fef28SJerry Van Baren Incorporate improvements from email list code review; 6015 6c3fef28SJerry Van Baren else 6016 6c3fef28SJerry Van Baren Defend code as written; 6017 6c3fef28SJerry Van Baren } 6018 c609719bSwdenk 6019 c609719bSwdenk return 0; 6020 c609719bSwdenk} 6021 c609719bSwdenk 6022 c609719bSwdenkvoid no_more_time (int sig) 6023 c609719bSwdenk{ 6024 c609719bSwdenk hire_a_guru(); 6025 c609719bSwdenk} 6026 c609719bSwdenk 6027 c609719bSwdenk 6028 c609719bSwdenkCoding Standards: 6029 c609719bSwdenk----------------- 6030 c609719bSwdenk 6031 c609719bSwdenkAll contributions to U-Boot should conform to the Linux kernel 6032 2c051651SDetlev Zundelcoding style; see the file "Documentation/CodingStyle" and the script 6033 7ca9296eSWolfgang Denk"scripts/Lindent" in your Linux kernel source directory. 6034 c609719bSwdenk 6035 2c051651SDetlev ZundelSource files originating from a different project (for example the 6036 2c051651SDetlev ZundelMTD subsystem) are generally exempt from these guidelines and are not 6037 2c051651SDetlev Zundelreformated to ease subsequent migration to newer versions of those 6038 2c051651SDetlev Zundelsources. 6039 2c051651SDetlev Zundel 6040 2c051651SDetlev ZundelPlease note that U-Boot is implemented in C (and to some small parts in 6041 2c051651SDetlev ZundelAssembler); no C++ is used, so please do not use C++ style comments (//) 6042 2c051651SDetlev Zundelin your code. 6043 c609719bSwdenk 6044 c178d3daSwdenkPlease also stick to the following formatting rules: 6045 180d3f74Swdenk- remove any trailing white space 6046 7ca9296eSWolfgang Denk- use TAB characters for indentation and vertical alignment, not spaces 6047 180d3f74Swdenk- make sure NOT to use DOS '\r\n' line feeds 6048 7ca9296eSWolfgang Denk- do not add more than 2 consecutive empty lines to source files 6049 180d3f74Swdenk- do not add trailing empty lines to source files 6050 180d3f74Swdenk 6051 c609719bSwdenkSubmissions which do not conform to the standards may be returned 6052 c609719bSwdenkwith a request to reformat the changes. 6053 c609719bSwdenk 6054 c609719bSwdenk 6055 c609719bSwdenkSubmitting Patches: 6056 c609719bSwdenk------------------- 6057 c609719bSwdenk 6058 c609719bSwdenkSince the number of patches for U-Boot is growing, we need to 6059 c609719bSwdenkestablish some rules. Submissions which do not conform to these rules 6060 c609719bSwdenkmay be rejected, even when they contain important and valuable stuff. 6061 c609719bSwdenk 6062 0d28f34bSMagnus LiljaPlease see http://www.denx.de/wiki/U-Boot/Patches for details. 6063 218ca724SWolfgang Denk 6064 0668236bSWolfgang DenkPatches shall be sent to the u-boot mailing list <u-boot@lists.denx.de>; 6065 0668236bSWolfgang Denksee http://lists.denx.de/mailman/listinfo/u-boot 6066 0668236bSWolfgang Denk 6067 c609719bSwdenkWhen you send a patch, please include the following information with 6068 c609719bSwdenkit: 6069 c609719bSwdenk 6070 c609719bSwdenk* For bug fixes: a description of the bug and how your patch fixes 6071 c609719bSwdenk this bug. Please try to include a way of demonstrating that the 6072 c609719bSwdenk patch actually fixes something. 6073 c609719bSwdenk 6074 c609719bSwdenk* For new features: a description of the feature and your 6075 c609719bSwdenk implementation. 6076 c609719bSwdenk 6077 c609719bSwdenk* A CHANGELOG entry as plaintext (separate from the patch) 6078 c609719bSwdenk 6079 c609719bSwdenk* For major contributions, your entry to the CREDITS file 6080 c609719bSwdenk 6081 27af930eSAlbert ARIBAUD* When you add support for a new board, don't forget to add a 6082 27af930eSAlbert ARIBAUD maintainer e-mail address to the boards.cfg file, too. 6083 c609719bSwdenk 6084 c609719bSwdenk* If your patch adds new configuration options, don't forget to 6085 c609719bSwdenk document these in the README file. 6086 c609719bSwdenk 6087 218ca724SWolfgang Denk* The patch itself. If you are using git (which is *strongly* 6088 218ca724SWolfgang Denk recommended) you can easily generate the patch using the 6089 7ca9296eSWolfgang Denk "git format-patch". If you then use "git send-email" to send it to 6090 218ca724SWolfgang Denk the U-Boot mailing list, you will avoid most of the common problems 6091 218ca724SWolfgang Denk with some other mail clients. 6092 c609719bSwdenk 6093 218ca724SWolfgang Denk If you cannot use git, use "diff -purN OLD NEW". If your version of 6094 218ca724SWolfgang Denk diff does not support these options, then get the latest version of 6095 218ca724SWolfgang Denk GNU diff. 6096 6dff5529Swdenk 6097 218ca724SWolfgang Denk The current directory when running this command shall be the parent 6098 218ca724SWolfgang Denk directory of the U-Boot source tree (i. e. please make sure that 6099 218ca724SWolfgang Denk your patch includes sufficient directory information for the 6100 218ca724SWolfgang Denk affected files). 6101 218ca724SWolfgang Denk 6102 218ca724SWolfgang Denk We prefer patches as plain text. MIME attachments are discouraged, 6103 218ca724SWolfgang Denk and compressed attachments must not be used. 6104 c609719bSwdenk 6105 52f52c14Swdenk* If one logical set of modifications affects or creates several 6106 52f52c14Swdenk files, all these changes shall be submitted in a SINGLE patch file. 6107 52f52c14Swdenk 6108 52f52c14Swdenk* Changesets that contain different, unrelated modifications shall be 6109 52f52c14Swdenk submitted as SEPARATE patches, one patch per changeset. 6110 52f52c14Swdenk 6111 52f52c14Swdenk 6112 c609719bSwdenkNotes: 6113 c609719bSwdenk 6114 c609719bSwdenk* Before sending the patch, run the MAKEALL script on your patched 6115 c609719bSwdenk source tree and make sure that no errors or warnings are reported 6116 c609719bSwdenk for any of the boards. 6117 c609719bSwdenk 6118 c609719bSwdenk* Keep your modifications to the necessary minimum: A patch 6119 c609719bSwdenk containing several unrelated changes or arbitrary reformats will be 6120 c609719bSwdenk returned with a request to re-formatting / split it. 6121 c609719bSwdenk 6122 c609719bSwdenk* If you modify existing code, make sure that your new code does not 6123 c609719bSwdenk add to the memory footprint of the code ;-) Small is beautiful! 6124 c609719bSwdenk When adding new features, these should compile conditionally only 6125 c609719bSwdenk (using #ifdef), and the resulting code with the new feature 6126 c609719bSwdenk disabled must not need more memory than the old code without your 6127 c609719bSwdenk modification. 6128 90dc6704Swdenk 6129 0668236bSWolfgang Denk* Remember that there is a size limit of 100 kB per message on the 6130 0668236bSWolfgang Denk u-boot mailing list. Bigger patches will be moderated. If they are 6131 0668236bSWolfgang Denk reasonable and not too big, they will be acknowledged. But patches 6132 0668236bSWolfgang Denk bigger than the size limit should be avoided. 6133