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 60a391d500STom Rini select CMD_BOOTZ if ARM && !ARM64 6126959271SMasahiro Yamada select CMD_BOOTI if ARM64 629f823615SHans de Goede select CMD_DHCP 639f823615SHans de Goede select CMD_EXT2 649f823615SHans de Goede select CMD_EXT4 659f823615SHans de Goede select CMD_FAT 669f823615SHans de Goede select CMD_FS_GENERIC 679f823615SHans de Goede select CMD_MII 689f823615SHans de Goede select CMD_PING 699f823615SHans de Goede select HUSH_PARSER 709f823615SHans de Goede help 719f823615SHans de Goede Select this to enable various options and commands which are suitable 729f823615SHans de Goede for building u-boot for booting general purpose Linux distributions. 739f823615SHans de Goede 74b724bd7dSSimon Glassconfig SYS_MALLOC_F 75b724bd7dSSimon Glass bool "Enable malloc() pool before relocation" 76326a6823SMasahiro Yamada default y if DM 77b724bd7dSSimon Glass help 7859d7c34bSRobert P. J. Day Before relocation, memory is very limited on many platforms. Still, 79b724bd7dSSimon Glass we can provide a small malloc() pool if needed. Driver model in 80b724bd7dSSimon Glass particular needs this to operate, so that it can allocate the 81b724bd7dSSimon Glass initial serial device and any others that are needed. 82b724bd7dSSimon Glass 83b724bd7dSSimon Glassconfig SYS_MALLOC_F_LEN 84b724bd7dSSimon Glass hex "Size of malloc() pool before relocation" 85b724bd7dSSimon Glass depends on SYS_MALLOC_F 86b724bd7dSSimon Glass default 0x400 87b724bd7dSSimon Glass help 8859d7c34bSRobert P. J. Day Before relocation, memory is very limited on many platforms. Still, 89b724bd7dSSimon Glass we can provide a small malloc() pool if needed. Driver model in 90b724bd7dSSimon Glass particular needs this to operate, so that it can allocate the 91b724bd7dSSimon Glass initial serial device and any others that are needed. 92b724bd7dSSimon Glass 931bf0979fSTom Rinimenuconfig EXPERT 941bf0979fSTom Rini bool "Configure standard U-Boot features (expert users)" 950aa8a4adSPrzemyslaw Marczak default y 961bf0979fSTom Rini help 971bf0979fSTom Rini This option allows certain base U-Boot options and settings 981bf0979fSTom Rini to be disabled or tweaked. This is for specialized 991bf0979fSTom Rini environments which can tolerate a "non-standard" U-Boot. 10059d7c34bSRobert P. J. Day Use this only if you really know what you are doing. 1011bf0979fSTom Rini 1020aa8a4adSPrzemyslaw Marczakif EXPERT 1030aa8a4adSPrzemyslaw Marczak config SYS_MALLOC_CLEAR_ON_INIT 1040aa8a4adSPrzemyslaw Marczak bool "Init with zeros the memory reserved for malloc (slow)" 1050aa8a4adSPrzemyslaw Marczak default y 1060aa8a4adSPrzemyslaw Marczak help 1070aa8a4adSPrzemyslaw Marczak This setting is enabled by default. The reserved malloc 1080aa8a4adSPrzemyslaw Marczak memory is initialized with zeros, so first malloc calls 1090aa8a4adSPrzemyslaw Marczak will return the pointer to the zeroed memory. But this 1100aa8a4adSPrzemyslaw Marczak slows the boot time. 1110aa8a4adSPrzemyslaw Marczak 1120aa8a4adSPrzemyslaw Marczak It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN 1130aa8a4adSPrzemyslaw Marczak value, has more than few MiB, e.g. when uses bzip2 or bmp logo. 1140aa8a4adSPrzemyslaw Marczak Then the boot time can be significantly reduced. 1150aa8a4adSPrzemyslaw Marczak Warning: 1160aa8a4adSPrzemyslaw Marczak When disabling this, please check if malloc calls, maybe 11759d7c34bSRobert P. J. Day should be replaced by calloc - if one expects zeroed memory. 118022885cbSSimon Glass 119022885cbSSimon Glassconfig TOOLS_DEBUG 120022885cbSSimon Glass bool "Enable debug information for tools" 121022885cbSSimon Glass help 122022885cbSSimon Glass Enable generation of debug information for tools such as mkimage. 123022885cbSSimon Glass This can be used for debugging purposes. With debug information 124022885cbSSimon Glass it is possible to set breakpoints on particular lines, single-step 125022885cbSSimon Glass debug through the source code, etc. 126022885cbSSimon Glass 1270aa8a4adSPrzemyslaw Marczakendif 128bb6b142fSMasahiro Yamada 129bb6b142fSMasahiro Yamadaconfig PHYS_64BIT 130bb6b142fSMasahiro Yamada bool "64bit physical address support" 131bb6b142fSMasahiro Yamada help 132bb6b142fSMasahiro Yamada Say Y here to support 64bit physical memory address. 133bb6b142fSMasahiro Yamada This can be used not only for 64bit SoCs, but also for 134bb6b142fSMasahiro Yamada large physical address extention on 32bit SoCs. 135bb6b142fSMasahiro Yamada 13640ad4c4bSMasahiro Yamadaendmenu # General setup 13740ad4c4bSMasahiro Yamada 138e91c3c33SMasahiro Yamadamenu "Boot images" 139e91c3c33SMasahiro Yamada 140b6cf4439SMasahiro Yamadaconfig FIT 141b6cf4439SMasahiro Yamada bool "Support Flattened Image Tree" 142b6cf4439SMasahiro Yamada help 143b6cf4439SMasahiro Yamada This option allows to boot the new uImage structrure, 144b6cf4439SMasahiro Yamada Flattened Image Tree. FIT is formally a FDT, which can include 145b6cf4439SMasahiro Yamada images of various types (kernel, FDT blob, ramdisk, etc.) 146b6cf4439SMasahiro Yamada in a single blob. To boot this new uImage structure, 1471f9ac4a4SIgor Grinberg pass the address of the blob to the "bootm" command. 14873223f0eSSimon Glass FIT is very flexible, supporting compression, multiple images, 14973223f0eSSimon Glass multiple configurations, verification through hashing and also 15073223f0eSSimon Glass verified boot (secure boot using RSA). This option enables that 15173223f0eSSimon Glass feature. 152b6cf4439SMasahiro Yamada 15351c14cd1STeddy Reedconfig SPL_FIT 15451c14cd1STeddy Reed bool "Support Flattened Image Tree within SPL" 15551c14cd1STeddy Reed depends on FIT 15651c14cd1STeddy Reed depends on SPL 15751c14cd1STeddy Reed 158b6cf4439SMasahiro Yamadaconfig FIT_VERBOSE 159b6cf4439SMasahiro Yamada bool "Display verbose messages on FIT boot" 160b6cf4439SMasahiro Yamada depends on FIT 161b6cf4439SMasahiro Yamada 162b6cf4439SMasahiro Yamadaconfig FIT_SIGNATURE 163c4beb22fSRuchika Gupta bool "Enable signature verification of FIT uImages" 164b6cf4439SMasahiro Yamada depends on FIT 1659009798dSChris Kuethe depends on DM 166c4beb22fSRuchika Gupta select RSA 167b6cf4439SMasahiro Yamada help 168b6cf4439SMasahiro Yamada This option enables signature verification of FIT uImages, 16994e3c8c4Sgaurav rana using a hash signed and verified using RSA. If 17094e3c8c4Sgaurav rana CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive 17173223f0eSSimon Glass hashing is available using hardware, then then RSA library will use 17273223f0eSSimon Glass it. See doc/uImage.FIT/signature.txt for more details. 17373223f0eSSimon Glass 17473223f0eSSimon Glass WARNING: When relying on signed FIT images with a required signature 17573223f0eSSimon Glass check the legacy image format is disabled by default, so that 17673223f0eSSimon Glass unsigned images cannot be loaded. If a board needs the legacy image 17773223f0eSSimon Glass format support in this case, enable it using 17873223f0eSSimon Glass CONFIG_IMAGE_FORMAT_LEGACY. 17973223f0eSSimon Glass 18051c14cd1STeddy Reedconfig SPL_FIT_SIGNATURE 18151c14cd1STeddy Reed bool "Enable signature verification of FIT firmware within SPL" 18251c14cd1STeddy Reed depends on SPL_FIT 18351c14cd1STeddy Reed depends on SPL_DM 18451c14cd1STeddy Reed select SPL_RSA 18551c14cd1STeddy Reed 18673223f0eSSimon Glassconfig FIT_BEST_MATCH 18773223f0eSSimon Glass bool "Select the best match for the kernel device tree" 18873223f0eSSimon Glass depends on FIT 18973223f0eSSimon Glass help 19073223f0eSSimon Glass When no configuration is explicitly selected, default to the 19173223f0eSSimon Glass one whose fdt's compatibility field best matches that of 19273223f0eSSimon Glass U-Boot itself. A match is considered "best" if it matches the 19373223f0eSSimon Glass most specific compatibility entry of U-Boot's fdt's root node. 19473223f0eSSimon Glass The order of entries in the configuration's fdt is ignored. 19573223f0eSSimon Glass 19673223f0eSSimon Glassconfig FIT_VERBOSE 19773223f0eSSimon Glass bool "Show verbose messages when FIT images fails" 19873223f0eSSimon Glass depends on FIT 19973223f0eSSimon Glass help 20073223f0eSSimon Glass Generally a system will have valid FIT images so debug messages 20173223f0eSSimon Glass are a waste of code space. If you are debugging your images then 20273223f0eSSimon Glass you can enable this option to get more verbose information about 20373223f0eSSimon Glass failures. 20473223f0eSSimon Glass 20573223f0eSSimon Glassconfig OF_BOARD_SETUP 20673223f0eSSimon Glass bool "Set up board-specific details in device tree before boot" 20773223f0eSSimon Glass depends on OF_LIBFDT 20873223f0eSSimon Glass help 20973223f0eSSimon Glass This causes U-Boot to call ft_board_setup() before booting into 21073223f0eSSimon Glass the Operating System. This function can set up various 21173223f0eSSimon Glass board-specific information in the device tree for use by the OS. 21273223f0eSSimon Glass The device tree is then passed to the OS. 21373223f0eSSimon Glass 21473223f0eSSimon Glassconfig OF_SYSTEM_SETUP 21573223f0eSSimon Glass bool "Set up system-specific details in device tree before boot" 21673223f0eSSimon Glass depends on OF_LIBFDT 21773223f0eSSimon Glass help 21873223f0eSSimon Glass This causes U-Boot to call ft_system_setup() before booting into 21973223f0eSSimon Glass the Operating System. This function can set up various 22073223f0eSSimon Glass system-specific information in the device tree for use by the OS. 22173223f0eSSimon Glass The device tree is then passed to the OS. 22273223f0eSSimon Glass 22373223f0eSSimon Glassconfig OF_STDOUT_VIA_ALIAS 22473223f0eSSimon Glass bool "Update the device-tree stdout alias from U-Boot" 22573223f0eSSimon Glass depends on OF_LIBFDT 22673223f0eSSimon Glass help 22773223f0eSSimon Glass This uses U-Boot's serial alias from the aliases node to update 22873223f0eSSimon Glass the device tree passed to the OS. The "linux,stdout-path" property 22973223f0eSSimon Glass in the chosen node is set to point to the correct serial node. 23073223f0eSSimon Glass This option currently references CONFIG_CONS_INDEX, which is 23173223f0eSSimon Glass incorrect when used with device tree as this option does not 23273223f0eSSimon Glass exist / should not be used. 233b6cf4439SMasahiro Yamada 23451631259SMasahiro Yamadaconfig SYS_EXTRA_OPTIONS 23551631259SMasahiro Yamada string "Extra Options (DEPRECATED)" 23651631259SMasahiro Yamada help 23751631259SMasahiro Yamada The old configuration infrastructure (= mkconfig + boards.cfg) 238ed36323fSMasahiro Yamada provided the extra options field. If you have something like 23951631259SMasahiro Yamada "HAS_BAR,BAZ=64", the optional options 24051631259SMasahiro Yamada #define CONFIG_HAS 24151631259SMasahiro Yamada #define CONFIG_BAZ 64 24251631259SMasahiro Yamada will be defined in include/config.h. 24351631259SMasahiro Yamada This option was prepared for the smooth migration from the old 24451631259SMasahiro Yamada configuration to Kconfig. Since this option will be removed sometime, 24551631259SMasahiro Yamada new boards should not use this option. 24651631259SMasahiro Yamada 2477f7563ceSMasahiro Yamadaconfig SYS_TEXT_BASE 248c6e18144SMasahiro Yamada depends on SPARC || ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \ 249ec35e123SPaul Burton (M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE || MIPS 250484cce0dSBen Stoltz depends on !EFI_APP 2517f7563ceSMasahiro Yamada hex "Text Base" 2527f7563ceSMasahiro Yamada help 2537f7563ceSMasahiro Yamada TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture 2547f7563ceSMasahiro Yamada 255f1dcee59SSimon Glassconfig SPL_LOAD_FIT 256f1dcee59SSimon Glass bool "Enable SPL loading U-Boot as a FIT" 257f1dcee59SSimon Glass depends on FIT 258f1dcee59SSimon Glass help 259f1dcee59SSimon Glass Normally with the SPL framework a legacy image is generated as part 260f1dcee59SSimon Glass of the build. This contains U-Boot along with information as to 261f1dcee59SSimon Glass where it should be loaded. This option instead enables generation 262f1dcee59SSimon Glass of a FIT (Flat Image Tree) which provides more flexibility. In 263f1dcee59SSimon Glass particular it can handle selecting from multiple device tree 264f1dcee59SSimon Glass and passing the correct one to U-Boot. 265f1dcee59SSimon Glass 266da74d1f3SDaniel Allredconfig SPL_FIT_IMAGE_POST_PROCESS 267da74d1f3SDaniel Allred bool "Enable post-processing of FIT artifacts after loading by the SPL" 268da74d1f3SDaniel Allred depends on SPL_LOAD_FIT && TI_SECURE_DEVICE 269da74d1f3SDaniel Allred help 270da74d1f3SDaniel Allred Allows doing any sort of manipulation to blobs after they got extracted 271da74d1f3SDaniel Allred from the U-Boot FIT image like stripping off headers or modifying the 272da74d1f3SDaniel Allred size of the blob, verification, authentication, decryption etc. in a 273da74d1f3SDaniel Allred platform or board specific way. In order to use this feature a platform 274da74d1f3SDaniel Allred or board-specific implementation of board_fit_image_post_process() must 275da74d1f3SDaniel Allred be provided. Also, anything done during this post-processing step would 276da74d1f3SDaniel Allred need to be comprehended in how the images were prepared before being 277da74d1f3SDaniel Allred injected into the FIT creation (i.e. the blobs would have been pre- 278da74d1f3SDaniel Allred processed before being added to the FIT image). 279da74d1f3SDaniel Allred 280eba3fbd6SAndreas Dannenbergconfig FIT_IMAGE_POST_PROCESS 281eba3fbd6SAndreas Dannenberg bool "Enable post-processing of FIT artifacts after loading by U-Boot" 282eba3fbd6SAndreas Dannenberg depends on FIT && TI_SECURE_DEVICE 283eba3fbd6SAndreas Dannenberg help 284eba3fbd6SAndreas Dannenberg Allows doing any sort of manipulation to blobs after they got extracted 285eba3fbd6SAndreas Dannenberg from FIT images like stripping off headers or modifying the size of the 286eba3fbd6SAndreas Dannenberg blob, verification, authentication, decryption etc. in a platform or 287eba3fbd6SAndreas Dannenberg board specific way. In order to use this feature a platform or board- 288eba3fbd6SAndreas Dannenberg specific implementation of board_fit_image_post_process() must be 289eba3fbd6SAndreas Dannenberg provided. Also, anything done during this post-processing step would 290eba3fbd6SAndreas Dannenberg need to be comprehended in how the images were prepared before being 291eba3fbd6SAndreas Dannenberg injected into the FIT creation (i.e. the blobs would have been pre- 292eba3fbd6SAndreas Dannenberg processed before being added to the FIT image). 293eba3fbd6SAndreas Dannenberg 294*bc5dbcb9SB, Raviconfig SPL_DFU_SUPPORT 295*bc5dbcb9SB, Ravi bool "Enable SPL with DFU to load binaries to memory device" 296*bc5dbcb9SB, Ravi depends on USB 297*bc5dbcb9SB, Ravi help 298*bc5dbcb9SB, Ravi Currently the SPL does not have capability to load the 299*bc5dbcb9SB, Ravi binaries or boot images to boot devices like ram,eMMC,SPI,etc. 300*bc5dbcb9SB, Ravi This feature enables the DFU (Device Firmware Upgarde) in SPL with 301*bc5dbcb9SB, Ravi RAM memory device support. The ROM code will load and execute 302*bc5dbcb9SB, Ravi the SPL built with dfu. The user can load binaries (u-boot/kernel) to 303*bc5dbcb9SB, Ravi selected device partition from host-pc using dfu-utils. 304*bc5dbcb9SB, Ravi This feature will be useful to flash the binaries to factory 305*bc5dbcb9SB, Ravi or bare-metal boards using USB interface. 306*bc5dbcb9SB, Ravi 307*bc5dbcb9SB, Ravichoice 308*bc5dbcb9SB, Ravi bool "DFU device selection" 309*bc5dbcb9SB, Ravi depends on SPL_DFU_SUPPORT 310*bc5dbcb9SB, Ravi 311*bc5dbcb9SB, Raviconfig SPL_DFU_RAM 312*bc5dbcb9SB, Ravi bool "RAM device" 313*bc5dbcb9SB, Ravi depends on SPL_DFU_SUPPORT 314*bc5dbcb9SB, Ravi help 315*bc5dbcb9SB, Ravi select RAM/DDR memory device for loading binary images 316*bc5dbcb9SB, Ravi (u-boot/kernel) to the selected device partition using 317*bc5dbcb9SB, Ravi DFU and execute the u-boot/kernel from RAM. 318*bc5dbcb9SB, Ravi 319*bc5dbcb9SB, Raviendchoice 320*bc5dbcb9SB, Ravi 32133d88183SAlexey Brodkinconfig SYS_CLK_FREQ 322e71b422bSIain Paton depends on ARC || ARCH_SUNXI 32333d88183SAlexey Brodkin int "CPU clock frequency" 32433d88183SAlexey Brodkin help 32533d88183SAlexey Brodkin TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture 32633d88183SAlexey Brodkin 327e2f88dfdSMichal Simekconfig ARCH_FIXUP_FDT 328e2f88dfdSMichal Simek bool "Enable arch_fixup_fdt() call" 329e2f88dfdSMichal Simek depends on ARM || MIPS 330e2f88dfdSMichal Simek default y 331e2f88dfdSMichal Simek help 332e2f88dfdSMichal Simek Enable FDT memory map syncup before OS boot. This feature can be 333e2f88dfdSMichal Simek used for booting OS with different memory setup where the part of 334e2f88dfdSMichal Simek the memory location should be used for different purpose. 335e2f88dfdSMichal Simek 336e91c3c33SMasahiro Yamadaendmenu # Boot images 33751631259SMasahiro Yamada 338ed36323fSMasahiro Yamadasource "common/Kconfig" 339ed36323fSMasahiro Yamada 34072a8cf8dSSimon Glasssource "cmd/Kconfig" 34172a8cf8dSSimon Glass 342783e6a72SMasahiro Yamadasource "dts/Kconfig" 343783e6a72SMasahiro Yamada 344ed36323fSMasahiro Yamadasource "net/Kconfig" 345ed36323fSMasahiro Yamada 346ed36323fSMasahiro Yamadasource "drivers/Kconfig" 347ed36323fSMasahiro Yamada 348ed36323fSMasahiro Yamadasource "fs/Kconfig" 349ed36323fSMasahiro Yamada 350ed36323fSMasahiro Yamadasource "lib/Kconfig" 3511967982aSSimon Glass 3521967982aSSimon Glasssource "test/Kconfig" 353