151631259SMasahiro Yamada# 251631259SMasahiro Yamada# For a description of the syntax of this configuration file, 359d7c34bSRobert P. J. Day# see the file Documentation/kbuild/kconfig-language.txt in the 459d7c34bSRobert P. J. Day# Linux kernel source tree. 551631259SMasahiro Yamada# 651631259SMasahiro Yamadamainmenu "U-Boot $UBOOTVERSION Configuration" 751631259SMasahiro Yamada 851631259SMasahiro Yamadaconfig UBOOTVERSION 951631259SMasahiro Yamada string 1051631259SMasahiro Yamada option env="UBOOTVERSION" 1151631259SMasahiro Yamada 1266afaef2SSimon Glass# Allow defaults in arch-specific code to override any given here 1366afaef2SSimon Glasssource "arch/Kconfig" 1466afaef2SSimon Glass 1551631259SMasahiro Yamadamenu "General setup" 1651631259SMasahiro Yamada 17e91c3c33SMasahiro Yamadaconfig LOCALVERSION 18e91c3c33SMasahiro Yamada string "Local version - append to U-Boot release" 19e91c3c33SMasahiro Yamada help 20e91c3c33SMasahiro Yamada Append an extra string to the end of your U-Boot version. 2159d7c34bSRobert P. J. Day This will show up in your boot log, for example. 22e91c3c33SMasahiro Yamada The string you set here will be appended after the contents of 23e91c3c33SMasahiro Yamada any files with a filename matching localversion* in your 24e91c3c33SMasahiro Yamada object and source tree, in that order. Your total string can 25e91c3c33SMasahiro Yamada be a maximum of 64 characters. 26e91c3c33SMasahiro Yamada 27e91c3c33SMasahiro Yamadaconfig LOCALVERSION_AUTO 28e91c3c33SMasahiro Yamada bool "Automatically append version information to the version string" 29e91c3c33SMasahiro Yamada default y 30e91c3c33SMasahiro Yamada help 31e91c3c33SMasahiro Yamada This will try to automatically determine if the current tree is a 3259d7c34bSRobert P. J. Day release tree by looking for Git tags that belong to the current 33e91c3c33SMasahiro Yamada top of tree revision. 34e91c3c33SMasahiro Yamada 35e91c3c33SMasahiro Yamada A string of the format -gxxxxxxxx will be added to the localversion 3659d7c34bSRobert P. J. Day if a Git-based tree is found. The string generated by this will be 37e91c3c33SMasahiro Yamada appended after any matching localversion* files, and after the value 38e91c3c33SMasahiro Yamada set in CONFIG_LOCALVERSION. 39e91c3c33SMasahiro Yamada 40e91c3c33SMasahiro Yamada (The actual string used here is the first eight characters produced 41e91c3c33SMasahiro Yamada by running the command: 42e91c3c33SMasahiro Yamada 43e91c3c33SMasahiro Yamada $ git rev-parse --verify HEAD 44e91c3c33SMasahiro Yamada 45e91c3c33SMasahiro Yamada which is done within the script "scripts/setlocalversion".) 46e91c3c33SMasahiro Yamada 474a8ed8e2SMasahiro Yamadaconfig CC_OPTIMIZE_FOR_SIZE 484a8ed8e2SMasahiro Yamada bool "Optimize for size" 494a8ed8e2SMasahiro Yamada default y 504a8ed8e2SMasahiro Yamada help 514a8ed8e2SMasahiro Yamada Enabling this option will pass "-Os" instead of "-O2" to gcc 524a8ed8e2SMasahiro Yamada resulting in a smaller U-Boot image. 534a8ed8e2SMasahiro Yamada 544a8ed8e2SMasahiro Yamada This option is enabled by default for U-Boot. 554a8ed8e2SMasahiro Yamada 569f823615SHans de Goedeconfig DISTRO_DEFAULTS 579f823615SHans de Goede bool "Select defaults suitable for booting general purpose Linux distributions" 583337e3afSTom Rini default y if ARCH_SUNXI || TEGRA 59b99ebaf9SAlexander Graf default y if ARCH_LS2080A 60*7bdedf11SRomain Perier default y if ARCH_ROCKCHIP 619f823615SHans de Goede default n 62a391d500STom Rini select CMD_BOOTZ if ARM && !ARM64 6326959271SMasahiro Yamada select CMD_BOOTI if ARM64 649f823615SHans de Goede select CMD_DHCP 65bfb380b3SYann E. MORIN select CMD_PXE 669f823615SHans de Goede select CMD_EXT2 679f823615SHans de Goede select CMD_EXT4 689f823615SHans de Goede select CMD_FAT 699f823615SHans de Goede select CMD_FS_GENERIC 709f823615SHans de Goede select CMD_MII 719f823615SHans de Goede select CMD_PING 729f823615SHans de Goede select HUSH_PARSER 739f823615SHans de Goede help 749f823615SHans de Goede Select this to enable various options and commands which are suitable 759f823615SHans de Goede for building u-boot for booting general purpose Linux distributions. 769f823615SHans de Goede 77b724bd7dSSimon Glassconfig SYS_MALLOC_F 78b724bd7dSSimon Glass bool "Enable malloc() pool before relocation" 79326a6823SMasahiro Yamada default y if DM 80b724bd7dSSimon Glass help 8159d7c34bSRobert P. J. Day Before relocation, memory is very limited on many platforms. Still, 82b724bd7dSSimon Glass we can provide a small malloc() pool if needed. Driver model in 83b724bd7dSSimon Glass particular needs this to operate, so that it can allocate the 84b724bd7dSSimon Glass initial serial device and any others that are needed. 85b724bd7dSSimon Glass 86b724bd7dSSimon Glassconfig SYS_MALLOC_F_LEN 87b724bd7dSSimon Glass hex "Size of malloc() pool before relocation" 88b724bd7dSSimon Glass depends on SYS_MALLOC_F 89b724bd7dSSimon Glass default 0x400 90b724bd7dSSimon Glass help 9159d7c34bSRobert P. J. Day Before relocation, memory is very limited on many platforms. Still, 92b724bd7dSSimon Glass we can provide a small malloc() pool if needed. Driver model in 93b724bd7dSSimon Glass particular needs this to operate, so that it can allocate the 94b724bd7dSSimon Glass initial serial device and any others that are needed. 95b724bd7dSSimon Glass 961bf0979fSTom Rinimenuconfig EXPERT 971bf0979fSTom Rini bool "Configure standard U-Boot features (expert users)" 980aa8a4adSPrzemyslaw Marczak default y 991bf0979fSTom Rini help 1001bf0979fSTom Rini This option allows certain base U-Boot options and settings 1011bf0979fSTom Rini to be disabled or tweaked. This is for specialized 1021bf0979fSTom Rini environments which can tolerate a "non-standard" U-Boot. 10359d7c34bSRobert P. J. Day Use this only if you really know what you are doing. 1041bf0979fSTom Rini 1050aa8a4adSPrzemyslaw Marczakif EXPERT 1060aa8a4adSPrzemyslaw Marczak config SYS_MALLOC_CLEAR_ON_INIT 1070aa8a4adSPrzemyslaw Marczak bool "Init with zeros the memory reserved for malloc (slow)" 1080aa8a4adSPrzemyslaw Marczak default y 1090aa8a4adSPrzemyslaw Marczak help 1100aa8a4adSPrzemyslaw Marczak This setting is enabled by default. The reserved malloc 1110aa8a4adSPrzemyslaw Marczak memory is initialized with zeros, so first malloc calls 1120aa8a4adSPrzemyslaw Marczak will return the pointer to the zeroed memory. But this 1130aa8a4adSPrzemyslaw Marczak slows the boot time. 1140aa8a4adSPrzemyslaw Marczak 1150aa8a4adSPrzemyslaw Marczak It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN 1160aa8a4adSPrzemyslaw Marczak value, has more than few MiB, e.g. when uses bzip2 or bmp logo. 1170aa8a4adSPrzemyslaw Marczak Then the boot time can be significantly reduced. 1180aa8a4adSPrzemyslaw Marczak Warning: 1190aa8a4adSPrzemyslaw Marczak When disabling this, please check if malloc calls, maybe 12059d7c34bSRobert P. J. Day should be replaced by calloc - if one expects zeroed memory. 121022885cbSSimon Glass 122022885cbSSimon Glassconfig TOOLS_DEBUG 123022885cbSSimon Glass bool "Enable debug information for tools" 124022885cbSSimon Glass help 125022885cbSSimon Glass Enable generation of debug information for tools such as mkimage. 126022885cbSSimon Glass This can be used for debugging purposes. With debug information 127022885cbSSimon Glass it is possible to set breakpoints on particular lines, single-step 128022885cbSSimon Glass debug through the source code, etc. 129022885cbSSimon Glass 1300aa8a4adSPrzemyslaw Marczakendif 131bb6b142fSMasahiro Yamada 132bb6b142fSMasahiro Yamadaconfig PHYS_64BIT 133bb6b142fSMasahiro Yamada bool "64bit physical address support" 134bb6b142fSMasahiro Yamada help 135bb6b142fSMasahiro Yamada Say Y here to support 64bit physical memory address. 136bb6b142fSMasahiro Yamada This can be used not only for 64bit SoCs, but also for 137bb6b142fSMasahiro Yamada large physical address extention on 32bit SoCs. 138bb6b142fSMasahiro Yamada 13940ad4c4bSMasahiro Yamadaendmenu # General setup 14040ad4c4bSMasahiro Yamada 141e91c3c33SMasahiro Yamadamenu "Boot images" 142e91c3c33SMasahiro Yamada 143b6cf4439SMasahiro Yamadaconfig FIT 144b6cf4439SMasahiro Yamada bool "Support Flattened Image Tree" 145b6cf4439SMasahiro Yamada help 146b6cf4439SMasahiro Yamada This option allows to boot the new uImage structrure, 147b6cf4439SMasahiro Yamada Flattened Image Tree. FIT is formally a FDT, which can include 148b6cf4439SMasahiro Yamada images of various types (kernel, FDT blob, ramdisk, etc.) 149b6cf4439SMasahiro Yamada in a single blob. To boot this new uImage structure, 1501f9ac4a4SIgor Grinberg pass the address of the blob to the "bootm" command. 15173223f0eSSimon Glass FIT is very flexible, supporting compression, multiple images, 15273223f0eSSimon Glass multiple configurations, verification through hashing and also 15373223f0eSSimon Glass verified boot (secure boot using RSA). This option enables that 15473223f0eSSimon Glass feature. 155b6cf4439SMasahiro Yamada 15651c14cd1STeddy Reedconfig SPL_FIT 15751c14cd1STeddy Reed bool "Support Flattened Image Tree within SPL" 15851c14cd1STeddy Reed depends on FIT 15951c14cd1STeddy Reed depends on SPL 16051c14cd1STeddy Reed 161b6cf4439SMasahiro Yamadaconfig FIT_VERBOSE 162b6cf4439SMasahiro Yamada bool "Display verbose messages on FIT boot" 163b6cf4439SMasahiro Yamada depends on FIT 164b6cf4439SMasahiro Yamada 165b6cf4439SMasahiro Yamadaconfig FIT_SIGNATURE 166c4beb22fSRuchika Gupta bool "Enable signature verification of FIT uImages" 167b6cf4439SMasahiro Yamada depends on FIT 1689009798dSChris Kuethe depends on DM 169c4beb22fSRuchika Gupta select RSA 170b6cf4439SMasahiro Yamada help 171b6cf4439SMasahiro Yamada This option enables signature verification of FIT uImages, 17294e3c8c4Sgaurav rana using a hash signed and verified using RSA. If 17394e3c8c4Sgaurav rana CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive 17473223f0eSSimon Glass hashing is available using hardware, then then RSA library will use 17573223f0eSSimon Glass it. See doc/uImage.FIT/signature.txt for more details. 17673223f0eSSimon Glass 17773223f0eSSimon Glass WARNING: When relying on signed FIT images with a required signature 17873223f0eSSimon Glass check the legacy image format is disabled by default, so that 17973223f0eSSimon Glass unsigned images cannot be loaded. If a board needs the legacy image 18073223f0eSSimon Glass format support in this case, enable it using 18173223f0eSSimon Glass CONFIG_IMAGE_FORMAT_LEGACY. 18273223f0eSSimon Glass 18351c14cd1STeddy Reedconfig SPL_FIT_SIGNATURE 18451c14cd1STeddy Reed bool "Enable signature verification of FIT firmware within SPL" 18551c14cd1STeddy Reed depends on SPL_FIT 18651c14cd1STeddy Reed depends on SPL_DM 18751c14cd1STeddy Reed select SPL_RSA 18851c14cd1STeddy Reed 18973223f0eSSimon Glassconfig FIT_BEST_MATCH 19073223f0eSSimon Glass bool "Select the best match for the kernel device tree" 19173223f0eSSimon Glass depends on FIT 19273223f0eSSimon Glass help 19373223f0eSSimon Glass When no configuration is explicitly selected, default to the 19473223f0eSSimon Glass one whose fdt's compatibility field best matches that of 19573223f0eSSimon Glass U-Boot itself. A match is considered "best" if it matches the 19673223f0eSSimon Glass most specific compatibility entry of U-Boot's fdt's root node. 19773223f0eSSimon Glass The order of entries in the configuration's fdt is ignored. 19873223f0eSSimon Glass 19973223f0eSSimon Glassconfig FIT_VERBOSE 20073223f0eSSimon Glass bool "Show verbose messages when FIT images fails" 20173223f0eSSimon Glass depends on FIT 20273223f0eSSimon Glass help 20373223f0eSSimon Glass Generally a system will have valid FIT images so debug messages 20473223f0eSSimon Glass are a waste of code space. If you are debugging your images then 20573223f0eSSimon Glass you can enable this option to get more verbose information about 20673223f0eSSimon Glass failures. 20773223f0eSSimon Glass 20873223f0eSSimon Glassconfig OF_BOARD_SETUP 20973223f0eSSimon Glass bool "Set up board-specific details in device tree before boot" 21073223f0eSSimon Glass depends on OF_LIBFDT 21173223f0eSSimon Glass help 21273223f0eSSimon Glass This causes U-Boot to call ft_board_setup() before booting into 21373223f0eSSimon Glass the Operating System. This function can set up various 21473223f0eSSimon Glass board-specific information in the device tree for use by the OS. 21573223f0eSSimon Glass The device tree is then passed to the OS. 21673223f0eSSimon Glass 21773223f0eSSimon Glassconfig OF_SYSTEM_SETUP 21873223f0eSSimon Glass bool "Set up system-specific details in device tree before boot" 21973223f0eSSimon Glass depends on OF_LIBFDT 22073223f0eSSimon Glass help 22173223f0eSSimon Glass This causes U-Boot to call ft_system_setup() before booting into 22273223f0eSSimon Glass the Operating System. This function can set up various 22373223f0eSSimon Glass system-specific information in the device tree for use by the OS. 22473223f0eSSimon Glass The device tree is then passed to the OS. 22573223f0eSSimon Glass 22673223f0eSSimon Glassconfig OF_STDOUT_VIA_ALIAS 22773223f0eSSimon Glass bool "Update the device-tree stdout alias from U-Boot" 22873223f0eSSimon Glass depends on OF_LIBFDT 22973223f0eSSimon Glass help 23073223f0eSSimon Glass This uses U-Boot's serial alias from the aliases node to update 23173223f0eSSimon Glass the device tree passed to the OS. The "linux,stdout-path" property 23273223f0eSSimon Glass in the chosen node is set to point to the correct serial node. 23373223f0eSSimon Glass This option currently references CONFIG_CONS_INDEX, which is 23473223f0eSSimon Glass incorrect when used with device tree as this option does not 23573223f0eSSimon Glass exist / should not be used. 236b6cf4439SMasahiro Yamada 23751631259SMasahiro Yamadaconfig SYS_EXTRA_OPTIONS 23851631259SMasahiro Yamada string "Extra Options (DEPRECATED)" 23951631259SMasahiro Yamada help 24051631259SMasahiro Yamada The old configuration infrastructure (= mkconfig + boards.cfg) 241ed36323fSMasahiro Yamada provided the extra options field. If you have something like 24251631259SMasahiro Yamada "HAS_BAR,BAZ=64", the optional options 24351631259SMasahiro Yamada #define CONFIG_HAS 24451631259SMasahiro Yamada #define CONFIG_BAZ 64 24551631259SMasahiro Yamada will be defined in include/config.h. 24651631259SMasahiro Yamada This option was prepared for the smooth migration from the old 24751631259SMasahiro Yamada configuration to Kconfig. Since this option will be removed sometime, 24851631259SMasahiro Yamada new boards should not use this option. 24951631259SMasahiro Yamada 2507f7563ceSMasahiro Yamadaconfig SYS_TEXT_BASE 251c6e18144SMasahiro Yamada depends on SPARC || ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \ 2526ebf8a4aSMichal Simek (M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE || MIPS || \ 2536ebf8a4aSMichal Simek ARCH_ZYNQ 254484cce0dSBen Stoltz depends on !EFI_APP 2557f7563ceSMasahiro Yamada hex "Text Base" 2567f7563ceSMasahiro Yamada help 2577f7563ceSMasahiro Yamada TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture 2587f7563ceSMasahiro Yamada 259f1dcee59SSimon Glassconfig SPL_LOAD_FIT 260f1dcee59SSimon Glass bool "Enable SPL loading U-Boot as a FIT" 261f1dcee59SSimon Glass depends on FIT 262f1dcee59SSimon Glass help 263f1dcee59SSimon Glass Normally with the SPL framework a legacy image is generated as part 264f1dcee59SSimon Glass of the build. This contains U-Boot along with information as to 265f1dcee59SSimon Glass where it should be loaded. This option instead enables generation 266f1dcee59SSimon Glass of a FIT (Flat Image Tree) which provides more flexibility. In 267f1dcee59SSimon Glass particular it can handle selecting from multiple device tree 268f1dcee59SSimon Glass and passing the correct one to U-Boot. 269f1dcee59SSimon Glass 270da74d1f3SDaniel Allredconfig SPL_FIT_IMAGE_POST_PROCESS 271da74d1f3SDaniel Allred bool "Enable post-processing of FIT artifacts after loading by the SPL" 272da74d1f3SDaniel Allred depends on SPL_LOAD_FIT && TI_SECURE_DEVICE 273da74d1f3SDaniel Allred help 274da74d1f3SDaniel Allred Allows doing any sort of manipulation to blobs after they got extracted 275da74d1f3SDaniel Allred from the U-Boot FIT image like stripping off headers or modifying the 276da74d1f3SDaniel Allred size of the blob, verification, authentication, decryption etc. in a 277da74d1f3SDaniel Allred platform or board specific way. In order to use this feature a platform 278da74d1f3SDaniel Allred or board-specific implementation of board_fit_image_post_process() must 279da74d1f3SDaniel Allred be provided. Also, anything done during this post-processing step would 280da74d1f3SDaniel Allred need to be comprehended in how the images were prepared before being 281da74d1f3SDaniel Allred injected into the FIT creation (i.e. the blobs would have been pre- 282da74d1f3SDaniel Allred processed before being added to the FIT image). 283da74d1f3SDaniel Allred 284eba3fbd6SAndreas Dannenbergconfig FIT_IMAGE_POST_PROCESS 285eba3fbd6SAndreas Dannenberg bool "Enable post-processing of FIT artifacts after loading by U-Boot" 286eba3fbd6SAndreas Dannenberg depends on FIT && TI_SECURE_DEVICE 287eba3fbd6SAndreas Dannenberg help 288eba3fbd6SAndreas Dannenberg Allows doing any sort of manipulation to blobs after they got extracted 289eba3fbd6SAndreas Dannenberg from FIT images like stripping off headers or modifying the size of the 290eba3fbd6SAndreas Dannenberg blob, verification, authentication, decryption etc. in a platform or 291eba3fbd6SAndreas Dannenberg board specific way. In order to use this feature a platform or board- 292eba3fbd6SAndreas Dannenberg specific implementation of board_fit_image_post_process() must be 293eba3fbd6SAndreas Dannenberg provided. Also, anything done during this post-processing step would 294eba3fbd6SAndreas Dannenberg need to be comprehended in how the images were prepared before being 295eba3fbd6SAndreas Dannenberg injected into the FIT creation (i.e. the blobs would have been pre- 296eba3fbd6SAndreas Dannenberg processed before being added to the FIT image). 297eba3fbd6SAndreas Dannenberg 29833d88183SAlexey Brodkinconfig SYS_CLK_FREQ 299e71b422bSIain Paton depends on ARC || ARCH_SUNXI 30033d88183SAlexey Brodkin int "CPU clock frequency" 30133d88183SAlexey Brodkin help 30233d88183SAlexey Brodkin TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture 30333d88183SAlexey Brodkin 30463c09417SMasahiro Yamadaconfig ARCH_FIXUP_FDT_MEMORY 30563c09417SMasahiro Yamada bool "Enable arch_fixup_memory_banks() call" 306e2f88dfdSMichal Simek default y 307e2f88dfdSMichal Simek help 308e2f88dfdSMichal Simek Enable FDT memory map syncup before OS boot. This feature can be 309e2f88dfdSMichal Simek used for booting OS with different memory setup where the part of 310e2f88dfdSMichal Simek the memory location should be used for different purpose. 311e2f88dfdSMichal Simek 312e91c3c33SMasahiro Yamadaendmenu # Boot images 31351631259SMasahiro Yamada 314ed36323fSMasahiro Yamadasource "common/Kconfig" 315ed36323fSMasahiro Yamada 31672a8cf8dSSimon Glasssource "cmd/Kconfig" 31772a8cf8dSSimon Glass 318783e6a72SMasahiro Yamadasource "dts/Kconfig" 319783e6a72SMasahiro Yamada 320ed36323fSMasahiro Yamadasource "net/Kconfig" 321ed36323fSMasahiro Yamada 322ed36323fSMasahiro Yamadasource "drivers/Kconfig" 323ed36323fSMasahiro Yamada 324ed36323fSMasahiro Yamadasource "fs/Kconfig" 325ed36323fSMasahiro Yamada 326ed36323fSMasahiro Yamadasource "lib/Kconfig" 3271967982aSSimon Glass 3281967982aSSimon Glasssource "test/Kconfig" 329