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" 589f823615SHans de Goede default y if ARCH_SUNXI 599f823615SHans de Goede default n 609f823615SHans de Goede select CMD_BOOTZ 619f823615SHans de Goede select CMD_DHCP 629f823615SHans de Goede select CMD_EXT2 639f823615SHans de Goede select CMD_EXT4 649f823615SHans de Goede select CMD_FAT 659f823615SHans de Goede select CMD_FS_GENERIC 669f823615SHans de Goede select CMD_MII 679f823615SHans de Goede select CMD_PING 689f823615SHans de Goede select HUSH_PARSER 699f823615SHans de Goede help 709f823615SHans de Goede Select this to enable various options and commands which are suitable 719f823615SHans de Goede for building u-boot for booting general purpose Linux distributions. 729f823615SHans de Goede 73b724bd7dSSimon Glassconfig SYS_MALLOC_F 74b724bd7dSSimon Glass bool "Enable malloc() pool before relocation" 75326a6823SMasahiro Yamada default y if DM 76b724bd7dSSimon Glass help 7759d7c34bSRobert P. J. Day Before relocation, memory is very limited on many platforms. Still, 78b724bd7dSSimon Glass we can provide a small malloc() pool if needed. Driver model in 79b724bd7dSSimon Glass particular needs this to operate, so that it can allocate the 80b724bd7dSSimon Glass initial serial device and any others that are needed. 81b724bd7dSSimon Glass 82b724bd7dSSimon Glassconfig SYS_MALLOC_F_LEN 83b724bd7dSSimon Glass hex "Size of malloc() pool before relocation" 84b724bd7dSSimon Glass depends on SYS_MALLOC_F 85b724bd7dSSimon Glass default 0x400 86b724bd7dSSimon Glass help 8759d7c34bSRobert P. J. Day Before relocation, memory is very limited on many platforms. Still, 88b724bd7dSSimon Glass we can provide a small malloc() pool if needed. Driver model in 89b724bd7dSSimon Glass particular needs this to operate, so that it can allocate the 90b724bd7dSSimon Glass initial serial device and any others that are needed. 91b724bd7dSSimon Glass 921bf0979fSTom Rinimenuconfig EXPERT 931bf0979fSTom Rini bool "Configure standard U-Boot features (expert users)" 940aa8a4adSPrzemyslaw Marczak default y 951bf0979fSTom Rini help 961bf0979fSTom Rini This option allows certain base U-Boot options and settings 971bf0979fSTom Rini to be disabled or tweaked. This is for specialized 981bf0979fSTom Rini environments which can tolerate a "non-standard" U-Boot. 9959d7c34bSRobert P. J. Day Use this only if you really know what you are doing. 1001bf0979fSTom Rini 1010aa8a4adSPrzemyslaw Marczakif EXPERT 1020aa8a4adSPrzemyslaw Marczak config SYS_MALLOC_CLEAR_ON_INIT 1030aa8a4adSPrzemyslaw Marczak bool "Init with zeros the memory reserved for malloc (slow)" 1040aa8a4adSPrzemyslaw Marczak default y 1050aa8a4adSPrzemyslaw Marczak help 1060aa8a4adSPrzemyslaw Marczak This setting is enabled by default. The reserved malloc 1070aa8a4adSPrzemyslaw Marczak memory is initialized with zeros, so first malloc calls 1080aa8a4adSPrzemyslaw Marczak will return the pointer to the zeroed memory. But this 1090aa8a4adSPrzemyslaw Marczak slows the boot time. 1100aa8a4adSPrzemyslaw Marczak 1110aa8a4adSPrzemyslaw Marczak It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN 1120aa8a4adSPrzemyslaw Marczak value, has more than few MiB, e.g. when uses bzip2 or bmp logo. 1130aa8a4adSPrzemyslaw Marczak Then the boot time can be significantly reduced. 1140aa8a4adSPrzemyslaw Marczak Warning: 1150aa8a4adSPrzemyslaw Marczak When disabling this, please check if malloc calls, maybe 11659d7c34bSRobert P. J. Day should be replaced by calloc - if one expects zeroed memory. 117*022885cbSSimon Glass 118*022885cbSSimon Glassconfig TOOLS_DEBUG 119*022885cbSSimon Glass bool "Enable debug information for tools" 120*022885cbSSimon Glass help 121*022885cbSSimon Glass Enable generation of debug information for tools such as mkimage. 122*022885cbSSimon Glass This can be used for debugging purposes. With debug information 123*022885cbSSimon Glass it is possible to set breakpoints on particular lines, single-step 124*022885cbSSimon Glass debug through the source code, etc. 125*022885cbSSimon Glass 1260aa8a4adSPrzemyslaw Marczakendif 12740ad4c4bSMasahiro Yamadaendmenu # General setup 12840ad4c4bSMasahiro Yamada 129e91c3c33SMasahiro Yamadamenu "Boot images" 130e91c3c33SMasahiro Yamada 13102627356SMasahiro Yamadaconfig SUPPORT_SPL 13202627356SMasahiro Yamada bool 13302627356SMasahiro Yamada 134cf6bbe4cSMasahiro Yamadaconfig SUPPORT_TPL 135cf6bbe4cSMasahiro Yamada bool 136cf6bbe4cSMasahiro Yamada 13751631259SMasahiro Yamadaconfig SPL 13851631259SMasahiro Yamada bool 13902627356SMasahiro Yamada depends on SUPPORT_SPL 140d648964fSMasahiro Yamada prompt "Enable SPL" 14151631259SMasahiro Yamada help 14251631259SMasahiro Yamada If you want to build SPL as well as the normal image, say Y. 14351631259SMasahiro Yamada 1441eb0c03cSHans de Goedeconfig SPL_SYS_MALLOC_SIMPLE 1451eb0c03cSHans de Goede bool 1461eb0c03cSHans de Goede depends on SPL 14759d7c34bSRobert P. J. Day prompt "Only use malloc_simple functions in the SPL" 1481eb0c03cSHans de Goede help 1491eb0c03cSHans de Goede Say Y here to only use the *_simple malloc functions from 15059d7c34bSRobert P. J. Day malloc_simple.c, rather then using the versions from dlmalloc.c; 1511eb0c03cSHans de Goede this will make the SPL binary smaller at the cost of more heap 1521eb0c03cSHans de Goede usage as the *_simple malloc functions do not re-use free-ed mem. 1531eb0c03cSHans de Goede 154db910353SSimon Glassconfig SPL_STACK_R 155db910353SSimon Glass depends on SPL 156db910353SSimon Glass bool "Enable SDRAM location for SPL stack" 157db910353SSimon Glass help 158db910353SSimon Glass SPL starts off execution in SRAM and thus typically has only a small 159db910353SSimon Glass stack available. Since SPL sets up DRAM while in its board_init_f() 160db910353SSimon Glass function, it is possible for the stack to move there before 161db910353SSimon Glass board_init_r() is reached. This option enables a special SDRAM 162db910353SSimon Glass location for the SPL stack. U-Boot SPL switches to this after 163db910353SSimon Glass board_init_f() completes, and before board_init_r() starts. 164db910353SSimon Glass 165db910353SSimon Glassconfig SPL_STACK_R_ADDR 166db910353SSimon Glass depends on SPL_STACK_R 167db910353SSimon Glass hex "SDRAM location for SPL stack" 168db910353SSimon Glass help 169db910353SSimon Glass Specify the address in SDRAM for the SPL stack. This will be set up 170db910353SSimon Glass before board_init_r() is called. 171db910353SSimon Glass 172dcfcb8d4SHans de Goedeconfig SPL_STACK_R_MALLOC_SIMPLE_LEN 173dcfcb8d4SHans de Goede depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE 174dcfcb8d4SHans de Goede hex "Size of malloc_simple heap after switching to DRAM SPL stack" 175dcfcb8d4SHans de Goede default 0x100000 176dcfcb8d4SHans de Goede help 177dcfcb8d4SHans de Goede Specify the amount of the stack to use as memory pool for 178dcfcb8d4SHans de Goede malloc_simple after switching the stack to DRAM. This may be set 179dcfcb8d4SHans de Goede to give board_init_r() a larger heap then the initial heap in 180dcfcb8d4SHans de Goede SRAM which is limited to SYS_MALLOC_F_LEN bytes. 181dcfcb8d4SHans de Goede 18210172962SSimon Glassconfig SPL_SEPARATE_BSS 18310172962SSimon Glass depends on SPL 18410172962SSimon Glass bool "BSS section is in a different memory region from text" 18510172962SSimon Glass help 18610172962SSimon Glass Some platforms need a large BSS region in SPL and can provide this 18710172962SSimon Glass because RAM is already set up. In this case BSS can be moved to RAM. 18810172962SSimon Glass This option should then be enabled so that the correct device tree 18910172962SSimon Glass location is used. Normally we put the device tree at the end of BSS 19010172962SSimon Glass but with this option enabled, it goes at _image_binary_end. 19110172962SSimon Glass 19251631259SMasahiro Yamadaconfig TPL 19351631259SMasahiro Yamada bool 194cf6bbe4cSMasahiro Yamada depends on SPL && SUPPORT_TPL 195d648964fSMasahiro Yamada prompt "Enable TPL" 19651631259SMasahiro Yamada help 19751631259SMasahiro Yamada If you want to build TPL as well as the normal image and SPL, say Y. 19851631259SMasahiro Yamada 199b6cf4439SMasahiro Yamadaconfig FIT 200b6cf4439SMasahiro Yamada bool "Support Flattened Image Tree" 201b6cf4439SMasahiro Yamada help 202b6cf4439SMasahiro Yamada This option allows to boot the new uImage structrure, 203b6cf4439SMasahiro Yamada Flattened Image Tree. FIT is formally a FDT, which can include 204b6cf4439SMasahiro Yamada images of various types (kernel, FDT blob, ramdisk, etc.) 205b6cf4439SMasahiro Yamada in a single blob. To boot this new uImage structure, 2061f9ac4a4SIgor Grinberg pass the address of the blob to the "bootm" command. 20773223f0eSSimon Glass FIT is very flexible, supporting compression, multiple images, 20873223f0eSSimon Glass multiple configurations, verification through hashing and also 20973223f0eSSimon Glass verified boot (secure boot using RSA). This option enables that 21073223f0eSSimon Glass feature. 211b6cf4439SMasahiro Yamada 21251c14cd1STeddy Reedconfig SPL_FIT 21351c14cd1STeddy Reed bool "Support Flattened Image Tree within SPL" 21451c14cd1STeddy Reed depends on FIT 21551c14cd1STeddy Reed depends on SPL 21651c14cd1STeddy Reed 217b6cf4439SMasahiro Yamadaconfig FIT_VERBOSE 218b6cf4439SMasahiro Yamada bool "Display verbose messages on FIT boot" 219b6cf4439SMasahiro Yamada depends on FIT 220b6cf4439SMasahiro Yamada 221b6cf4439SMasahiro Yamadaconfig FIT_SIGNATURE 222c4beb22fSRuchika Gupta bool "Enable signature verification of FIT uImages" 223b6cf4439SMasahiro Yamada depends on FIT 2249009798dSChris Kuethe depends on DM 225c4beb22fSRuchika Gupta select RSA 226b6cf4439SMasahiro Yamada help 227b6cf4439SMasahiro Yamada This option enables signature verification of FIT uImages, 22894e3c8c4Sgaurav rana using a hash signed and verified using RSA. If 22994e3c8c4Sgaurav rana CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive 23073223f0eSSimon Glass hashing is available using hardware, then then RSA library will use 23173223f0eSSimon Glass it. See doc/uImage.FIT/signature.txt for more details. 23273223f0eSSimon Glass 23373223f0eSSimon Glass WARNING: When relying on signed FIT images with a required signature 23473223f0eSSimon Glass check the legacy image format is disabled by default, so that 23573223f0eSSimon Glass unsigned images cannot be loaded. If a board needs the legacy image 23673223f0eSSimon Glass format support in this case, enable it using 23773223f0eSSimon Glass CONFIG_IMAGE_FORMAT_LEGACY. 23873223f0eSSimon Glass 23951c14cd1STeddy Reedconfig SPL_FIT_SIGNATURE 24051c14cd1STeddy Reed bool "Enable signature verification of FIT firmware within SPL" 24151c14cd1STeddy Reed depends on SPL_FIT 24251c14cd1STeddy Reed depends on SPL_DM 24351c14cd1STeddy Reed select SPL_RSA 24451c14cd1STeddy Reed 24573223f0eSSimon Glassconfig FIT_BEST_MATCH 24673223f0eSSimon Glass bool "Select the best match for the kernel device tree" 24773223f0eSSimon Glass depends on FIT 24873223f0eSSimon Glass help 24973223f0eSSimon Glass When no configuration is explicitly selected, default to the 25073223f0eSSimon Glass one whose fdt's compatibility field best matches that of 25173223f0eSSimon Glass U-Boot itself. A match is considered "best" if it matches the 25273223f0eSSimon Glass most specific compatibility entry of U-Boot's fdt's root node. 25373223f0eSSimon Glass The order of entries in the configuration's fdt is ignored. 25473223f0eSSimon Glass 25573223f0eSSimon Glassconfig FIT_VERBOSE 25673223f0eSSimon Glass bool "Show verbose messages when FIT images fails" 25773223f0eSSimon Glass depends on FIT 25873223f0eSSimon Glass help 25973223f0eSSimon Glass Generally a system will have valid FIT images so debug messages 26073223f0eSSimon Glass are a waste of code space. If you are debugging your images then 26173223f0eSSimon Glass you can enable this option to get more verbose information about 26273223f0eSSimon Glass failures. 26373223f0eSSimon Glass 26473223f0eSSimon Glassconfig OF_BOARD_SETUP 26573223f0eSSimon Glass bool "Set up board-specific details in device tree before boot" 26673223f0eSSimon Glass depends on OF_LIBFDT 26773223f0eSSimon Glass help 26873223f0eSSimon Glass This causes U-Boot to call ft_board_setup() before booting into 26973223f0eSSimon Glass the Operating System. This function can set up various 27073223f0eSSimon Glass board-specific information in the device tree for use by the OS. 27173223f0eSSimon Glass The device tree is then passed to the OS. 27273223f0eSSimon Glass 27373223f0eSSimon Glassconfig OF_SYSTEM_SETUP 27473223f0eSSimon Glass bool "Set up system-specific details in device tree before boot" 27573223f0eSSimon Glass depends on OF_LIBFDT 27673223f0eSSimon Glass help 27773223f0eSSimon Glass This causes U-Boot to call ft_system_setup() before booting into 27873223f0eSSimon Glass the Operating System. This function can set up various 27973223f0eSSimon Glass system-specific information in the device tree for use by the OS. 28073223f0eSSimon Glass The device tree is then passed to the OS. 28173223f0eSSimon Glass 28273223f0eSSimon Glassconfig OF_STDOUT_VIA_ALIAS 28373223f0eSSimon Glass bool "Update the device-tree stdout alias from U-Boot" 28473223f0eSSimon Glass depends on OF_LIBFDT 28573223f0eSSimon Glass help 28673223f0eSSimon Glass This uses U-Boot's serial alias from the aliases node to update 28773223f0eSSimon Glass the device tree passed to the OS. The "linux,stdout-path" property 28873223f0eSSimon Glass in the chosen node is set to point to the correct serial node. 28973223f0eSSimon Glass This option currently references CONFIG_CONS_INDEX, which is 29073223f0eSSimon Glass incorrect when used with device tree as this option does not 29173223f0eSSimon Glass exist / should not be used. 292b6cf4439SMasahiro Yamada 29351631259SMasahiro Yamadaconfig SYS_EXTRA_OPTIONS 29451631259SMasahiro Yamada string "Extra Options (DEPRECATED)" 29551631259SMasahiro Yamada help 29651631259SMasahiro Yamada The old configuration infrastructure (= mkconfig + boards.cfg) 297ed36323fSMasahiro Yamada provided the extra options field. If you have something like 29851631259SMasahiro Yamada "HAS_BAR,BAZ=64", the optional options 29951631259SMasahiro Yamada #define CONFIG_HAS 30051631259SMasahiro Yamada #define CONFIG_BAZ 64 30151631259SMasahiro Yamada will be defined in include/config.h. 30251631259SMasahiro Yamada This option was prepared for the smooth migration from the old 30351631259SMasahiro Yamada configuration to Kconfig. Since this option will be removed sometime, 30451631259SMasahiro Yamada new boards should not use this option. 30551631259SMasahiro Yamada 3067f7563ceSMasahiro Yamadaconfig SYS_TEXT_BASE 307c6e18144SMasahiro Yamada depends on SPARC || ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \ 308ec35e123SPaul Burton (M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE || MIPS 309484cce0dSBen Stoltz depends on !EFI_APP 3107f7563ceSMasahiro Yamada hex "Text Base" 3117f7563ceSMasahiro Yamada help 3127f7563ceSMasahiro Yamada TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture 3137f7563ceSMasahiro Yamada 314f1dcee59SSimon Glassconfig SPL_LOAD_FIT 315f1dcee59SSimon Glass bool "Enable SPL loading U-Boot as a FIT" 316f1dcee59SSimon Glass depends on FIT 317f1dcee59SSimon Glass help 318f1dcee59SSimon Glass Normally with the SPL framework a legacy image is generated as part 319f1dcee59SSimon Glass of the build. This contains U-Boot along with information as to 320f1dcee59SSimon Glass where it should be loaded. This option instead enables generation 321f1dcee59SSimon Glass of a FIT (Flat Image Tree) which provides more flexibility. In 322f1dcee59SSimon Glass particular it can handle selecting from multiple device tree 323f1dcee59SSimon Glass and passing the correct one to U-Boot. 324f1dcee59SSimon Glass 325da74d1f3SDaniel Allredconfig SPL_FIT_IMAGE_POST_PROCESS 326da74d1f3SDaniel Allred bool "Enable post-processing of FIT artifacts after loading by the SPL" 327da74d1f3SDaniel Allred depends on SPL_LOAD_FIT && TI_SECURE_DEVICE 328da74d1f3SDaniel Allred help 329da74d1f3SDaniel Allred Allows doing any sort of manipulation to blobs after they got extracted 330da74d1f3SDaniel Allred from the U-Boot FIT image like stripping off headers or modifying the 331da74d1f3SDaniel Allred size of the blob, verification, authentication, decryption etc. in a 332da74d1f3SDaniel Allred platform or board specific way. In order to use this feature a platform 333da74d1f3SDaniel Allred or board-specific implementation of board_fit_image_post_process() must 334da74d1f3SDaniel Allred be provided. Also, anything done during this post-processing step would 335da74d1f3SDaniel Allred need to be comprehended in how the images were prepared before being 336da74d1f3SDaniel Allred injected into the FIT creation (i.e. the blobs would have been pre- 337da74d1f3SDaniel Allred processed before being added to the FIT image). 338da74d1f3SDaniel Allred 33933d88183SAlexey Brodkinconfig SYS_CLK_FREQ 340e71b422bSIain Paton depends on ARC || ARCH_SUNXI 34133d88183SAlexey Brodkin int "CPU clock frequency" 34233d88183SAlexey Brodkin help 34333d88183SAlexey Brodkin TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture 34433d88183SAlexey Brodkin 345e91c3c33SMasahiro Yamadaendmenu # Boot images 34651631259SMasahiro Yamada 347ed36323fSMasahiro Yamadasource "common/Kconfig" 348ed36323fSMasahiro Yamada 34972a8cf8dSSimon Glasssource "cmd/Kconfig" 35072a8cf8dSSimon Glass 351783e6a72SMasahiro Yamadasource "dts/Kconfig" 352783e6a72SMasahiro Yamada 353ed36323fSMasahiro Yamadasource "net/Kconfig" 354ed36323fSMasahiro Yamada 355ed36323fSMasahiro Yamadasource "drivers/Kconfig" 356ed36323fSMasahiro Yamada 357ed36323fSMasahiro Yamadasource "fs/Kconfig" 358ed36323fSMasahiro Yamada 359ed36323fSMasahiro Yamadasource "lib/Kconfig" 3601967982aSSimon Glass 3611967982aSSimon Glasssource "test/Kconfig" 362