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 59*b99ebaf9SAlexander Graf default y if ARCH_LS2080A 609f823615SHans de Goede default n 61a391d500STom Rini select CMD_BOOTZ if ARM && !ARM64 6226959271SMasahiro Yamada select CMD_BOOTI if ARM64 639f823615SHans de Goede select CMD_DHCP 649f823615SHans de Goede select CMD_EXT2 659f823615SHans de Goede select CMD_EXT4 669f823615SHans de Goede select CMD_FAT 679f823615SHans de Goede select CMD_FS_GENERIC 689f823615SHans de Goede select CMD_MII 699f823615SHans de Goede select CMD_PING 709f823615SHans de Goede select HUSH_PARSER 719f823615SHans de Goede help 729f823615SHans de Goede Select this to enable various options and commands which are suitable 739f823615SHans de Goede for building u-boot for booting general purpose Linux distributions. 749f823615SHans de Goede 75b724bd7dSSimon Glassconfig SYS_MALLOC_F 76b724bd7dSSimon Glass bool "Enable malloc() pool before relocation" 77326a6823SMasahiro Yamada default y if DM 78b724bd7dSSimon Glass help 7959d7c34bSRobert P. J. Day Before relocation, memory is very limited on many platforms. Still, 80b724bd7dSSimon Glass we can provide a small malloc() pool if needed. Driver model in 81b724bd7dSSimon Glass particular needs this to operate, so that it can allocate the 82b724bd7dSSimon Glass initial serial device and any others that are needed. 83b724bd7dSSimon Glass 84b724bd7dSSimon Glassconfig SYS_MALLOC_F_LEN 85b724bd7dSSimon Glass hex "Size of malloc() pool before relocation" 86b724bd7dSSimon Glass depends on SYS_MALLOC_F 87b724bd7dSSimon Glass default 0x400 88b724bd7dSSimon Glass help 8959d7c34bSRobert P. J. Day Before relocation, memory is very limited on many platforms. Still, 90b724bd7dSSimon Glass we can provide a small malloc() pool if needed. Driver model in 91b724bd7dSSimon Glass particular needs this to operate, so that it can allocate the 92b724bd7dSSimon Glass initial serial device and any others that are needed. 93b724bd7dSSimon Glass 941bf0979fSTom Rinimenuconfig EXPERT 951bf0979fSTom Rini bool "Configure standard U-Boot features (expert users)" 960aa8a4adSPrzemyslaw Marczak default y 971bf0979fSTom Rini help 981bf0979fSTom Rini This option allows certain base U-Boot options and settings 991bf0979fSTom Rini to be disabled or tweaked. This is for specialized 1001bf0979fSTom Rini environments which can tolerate a "non-standard" U-Boot. 10159d7c34bSRobert P. J. Day Use this only if you really know what you are doing. 1021bf0979fSTom Rini 1030aa8a4adSPrzemyslaw Marczakif EXPERT 1040aa8a4adSPrzemyslaw Marczak config SYS_MALLOC_CLEAR_ON_INIT 1050aa8a4adSPrzemyslaw Marczak bool "Init with zeros the memory reserved for malloc (slow)" 1060aa8a4adSPrzemyslaw Marczak default y 1070aa8a4adSPrzemyslaw Marczak help 1080aa8a4adSPrzemyslaw Marczak This setting is enabled by default. The reserved malloc 1090aa8a4adSPrzemyslaw Marczak memory is initialized with zeros, so first malloc calls 1100aa8a4adSPrzemyslaw Marczak will return the pointer to the zeroed memory. But this 1110aa8a4adSPrzemyslaw Marczak slows the boot time. 1120aa8a4adSPrzemyslaw Marczak 1130aa8a4adSPrzemyslaw Marczak It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN 1140aa8a4adSPrzemyslaw Marczak value, has more than few MiB, e.g. when uses bzip2 or bmp logo. 1150aa8a4adSPrzemyslaw Marczak Then the boot time can be significantly reduced. 1160aa8a4adSPrzemyslaw Marczak Warning: 1170aa8a4adSPrzemyslaw Marczak When disabling this, please check if malloc calls, maybe 11859d7c34bSRobert P. J. Day should be replaced by calloc - if one expects zeroed memory. 119022885cbSSimon Glass 120022885cbSSimon Glassconfig TOOLS_DEBUG 121022885cbSSimon Glass bool "Enable debug information for tools" 122022885cbSSimon Glass help 123022885cbSSimon Glass Enable generation of debug information for tools such as mkimage. 124022885cbSSimon Glass This can be used for debugging purposes. With debug information 125022885cbSSimon Glass it is possible to set breakpoints on particular lines, single-step 126022885cbSSimon Glass debug through the source code, etc. 127022885cbSSimon Glass 1280aa8a4adSPrzemyslaw Marczakendif 129bb6b142fSMasahiro Yamada 130bb6b142fSMasahiro Yamadaconfig PHYS_64BIT 131bb6b142fSMasahiro Yamada bool "64bit physical address support" 132bb6b142fSMasahiro Yamada help 133bb6b142fSMasahiro Yamada Say Y here to support 64bit physical memory address. 134bb6b142fSMasahiro Yamada This can be used not only for 64bit SoCs, but also for 135bb6b142fSMasahiro Yamada large physical address extention on 32bit SoCs. 136bb6b142fSMasahiro Yamada 13740ad4c4bSMasahiro Yamadaendmenu # General setup 13840ad4c4bSMasahiro Yamada 139e91c3c33SMasahiro Yamadamenu "Boot images" 140e91c3c33SMasahiro Yamada 141b6cf4439SMasahiro Yamadaconfig FIT 142b6cf4439SMasahiro Yamada bool "Support Flattened Image Tree" 143b6cf4439SMasahiro Yamada help 144b6cf4439SMasahiro Yamada This option allows to boot the new uImage structrure, 145b6cf4439SMasahiro Yamada Flattened Image Tree. FIT is formally a FDT, which can include 146b6cf4439SMasahiro Yamada images of various types (kernel, FDT blob, ramdisk, etc.) 147b6cf4439SMasahiro Yamada in a single blob. To boot this new uImage structure, 1481f9ac4a4SIgor Grinberg pass the address of the blob to the "bootm" command. 14973223f0eSSimon Glass FIT is very flexible, supporting compression, multiple images, 15073223f0eSSimon Glass multiple configurations, verification through hashing and also 15173223f0eSSimon Glass verified boot (secure boot using RSA). This option enables that 15273223f0eSSimon Glass feature. 153b6cf4439SMasahiro Yamada 15451c14cd1STeddy Reedconfig SPL_FIT 15551c14cd1STeddy Reed bool "Support Flattened Image Tree within SPL" 15651c14cd1STeddy Reed depends on FIT 15751c14cd1STeddy Reed depends on SPL 15851c14cd1STeddy Reed 159b6cf4439SMasahiro Yamadaconfig FIT_VERBOSE 160b6cf4439SMasahiro Yamada bool "Display verbose messages on FIT boot" 161b6cf4439SMasahiro Yamada depends on FIT 162b6cf4439SMasahiro Yamada 163b6cf4439SMasahiro Yamadaconfig FIT_SIGNATURE 164c4beb22fSRuchika Gupta bool "Enable signature verification of FIT uImages" 165b6cf4439SMasahiro Yamada depends on FIT 1669009798dSChris Kuethe depends on DM 167c4beb22fSRuchika Gupta select RSA 168b6cf4439SMasahiro Yamada help 169b6cf4439SMasahiro Yamada This option enables signature verification of FIT uImages, 17094e3c8c4Sgaurav rana using a hash signed and verified using RSA. If 17194e3c8c4Sgaurav rana CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive 17273223f0eSSimon Glass hashing is available using hardware, then then RSA library will use 17373223f0eSSimon Glass it. See doc/uImage.FIT/signature.txt for more details. 17473223f0eSSimon Glass 17573223f0eSSimon Glass WARNING: When relying on signed FIT images with a required signature 17673223f0eSSimon Glass check the legacy image format is disabled by default, so that 17773223f0eSSimon Glass unsigned images cannot be loaded. If a board needs the legacy image 17873223f0eSSimon Glass format support in this case, enable it using 17973223f0eSSimon Glass CONFIG_IMAGE_FORMAT_LEGACY. 18073223f0eSSimon Glass 18151c14cd1STeddy Reedconfig SPL_FIT_SIGNATURE 18251c14cd1STeddy Reed bool "Enable signature verification of FIT firmware within SPL" 18351c14cd1STeddy Reed depends on SPL_FIT 18451c14cd1STeddy Reed depends on SPL_DM 18551c14cd1STeddy Reed select SPL_RSA 18651c14cd1STeddy Reed 18773223f0eSSimon Glassconfig FIT_BEST_MATCH 18873223f0eSSimon Glass bool "Select the best match for the kernel device tree" 18973223f0eSSimon Glass depends on FIT 19073223f0eSSimon Glass help 19173223f0eSSimon Glass When no configuration is explicitly selected, default to the 19273223f0eSSimon Glass one whose fdt's compatibility field best matches that of 19373223f0eSSimon Glass U-Boot itself. A match is considered "best" if it matches the 19473223f0eSSimon Glass most specific compatibility entry of U-Boot's fdt's root node. 19573223f0eSSimon Glass The order of entries in the configuration's fdt is ignored. 19673223f0eSSimon Glass 19773223f0eSSimon Glassconfig FIT_VERBOSE 19873223f0eSSimon Glass bool "Show verbose messages when FIT images fails" 19973223f0eSSimon Glass depends on FIT 20073223f0eSSimon Glass help 20173223f0eSSimon Glass Generally a system will have valid FIT images so debug messages 20273223f0eSSimon Glass are a waste of code space. If you are debugging your images then 20373223f0eSSimon Glass you can enable this option to get more verbose information about 20473223f0eSSimon Glass failures. 20573223f0eSSimon Glass 20673223f0eSSimon Glassconfig OF_BOARD_SETUP 20773223f0eSSimon Glass bool "Set up board-specific details in device tree before boot" 20873223f0eSSimon Glass depends on OF_LIBFDT 20973223f0eSSimon Glass help 21073223f0eSSimon Glass This causes U-Boot to call ft_board_setup() before booting into 21173223f0eSSimon Glass the Operating System. This function can set up various 21273223f0eSSimon Glass board-specific information in the device tree for use by the OS. 21373223f0eSSimon Glass The device tree is then passed to the OS. 21473223f0eSSimon Glass 21573223f0eSSimon Glassconfig OF_SYSTEM_SETUP 21673223f0eSSimon Glass bool "Set up system-specific details in device tree before boot" 21773223f0eSSimon Glass depends on OF_LIBFDT 21873223f0eSSimon Glass help 21973223f0eSSimon Glass This causes U-Boot to call ft_system_setup() before booting into 22073223f0eSSimon Glass the Operating System. This function can set up various 22173223f0eSSimon Glass system-specific information in the device tree for use by the OS. 22273223f0eSSimon Glass The device tree is then passed to the OS. 22373223f0eSSimon Glass 22473223f0eSSimon Glassconfig OF_STDOUT_VIA_ALIAS 22573223f0eSSimon Glass bool "Update the device-tree stdout alias from U-Boot" 22673223f0eSSimon Glass depends on OF_LIBFDT 22773223f0eSSimon Glass help 22873223f0eSSimon Glass This uses U-Boot's serial alias from the aliases node to update 22973223f0eSSimon Glass the device tree passed to the OS. The "linux,stdout-path" property 23073223f0eSSimon Glass in the chosen node is set to point to the correct serial node. 23173223f0eSSimon Glass This option currently references CONFIG_CONS_INDEX, which is 23273223f0eSSimon Glass incorrect when used with device tree as this option does not 23373223f0eSSimon Glass exist / should not be used. 234b6cf4439SMasahiro Yamada 23551631259SMasahiro Yamadaconfig SYS_EXTRA_OPTIONS 23651631259SMasahiro Yamada string "Extra Options (DEPRECATED)" 23751631259SMasahiro Yamada help 23851631259SMasahiro Yamada The old configuration infrastructure (= mkconfig + boards.cfg) 239ed36323fSMasahiro Yamada provided the extra options field. If you have something like 24051631259SMasahiro Yamada "HAS_BAR,BAZ=64", the optional options 24151631259SMasahiro Yamada #define CONFIG_HAS 24251631259SMasahiro Yamada #define CONFIG_BAZ 64 24351631259SMasahiro Yamada will be defined in include/config.h. 24451631259SMasahiro Yamada This option was prepared for the smooth migration from the old 24551631259SMasahiro Yamada configuration to Kconfig. Since this option will be removed sometime, 24651631259SMasahiro Yamada new boards should not use this option. 24751631259SMasahiro Yamada 2487f7563ceSMasahiro Yamadaconfig SYS_TEXT_BASE 249c6e18144SMasahiro Yamada depends on SPARC || ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \ 250ec35e123SPaul Burton (M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE || MIPS 251484cce0dSBen Stoltz depends on !EFI_APP 2527f7563ceSMasahiro Yamada hex "Text Base" 2537f7563ceSMasahiro Yamada help 2547f7563ceSMasahiro Yamada TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture 2557f7563ceSMasahiro Yamada 256f1dcee59SSimon Glassconfig SPL_LOAD_FIT 257f1dcee59SSimon Glass bool "Enable SPL loading U-Boot as a FIT" 258f1dcee59SSimon Glass depends on FIT 259f1dcee59SSimon Glass help 260f1dcee59SSimon Glass Normally with the SPL framework a legacy image is generated as part 261f1dcee59SSimon Glass of the build. This contains U-Boot along with information as to 262f1dcee59SSimon Glass where it should be loaded. This option instead enables generation 263f1dcee59SSimon Glass of a FIT (Flat Image Tree) which provides more flexibility. In 264f1dcee59SSimon Glass particular it can handle selecting from multiple device tree 265f1dcee59SSimon Glass and passing the correct one to U-Boot. 266f1dcee59SSimon Glass 267da74d1f3SDaniel Allredconfig SPL_FIT_IMAGE_POST_PROCESS 268da74d1f3SDaniel Allred bool "Enable post-processing of FIT artifacts after loading by the SPL" 269da74d1f3SDaniel Allred depends on SPL_LOAD_FIT && TI_SECURE_DEVICE 270da74d1f3SDaniel Allred help 271da74d1f3SDaniel Allred Allows doing any sort of manipulation to blobs after they got extracted 272da74d1f3SDaniel Allred from the U-Boot FIT image like stripping off headers or modifying the 273da74d1f3SDaniel Allred size of the blob, verification, authentication, decryption etc. in a 274da74d1f3SDaniel Allred platform or board specific way. In order to use this feature a platform 275da74d1f3SDaniel Allred or board-specific implementation of board_fit_image_post_process() must 276da74d1f3SDaniel Allred be provided. Also, anything done during this post-processing step would 277da74d1f3SDaniel Allred need to be comprehended in how the images were prepared before being 278da74d1f3SDaniel Allred injected into the FIT creation (i.e. the blobs would have been pre- 279da74d1f3SDaniel Allred processed before being added to the FIT image). 280da74d1f3SDaniel Allred 281eba3fbd6SAndreas Dannenbergconfig FIT_IMAGE_POST_PROCESS 282eba3fbd6SAndreas Dannenberg bool "Enable post-processing of FIT artifacts after loading by U-Boot" 283eba3fbd6SAndreas Dannenberg depends on FIT && TI_SECURE_DEVICE 284eba3fbd6SAndreas Dannenberg help 285eba3fbd6SAndreas Dannenberg Allows doing any sort of manipulation to blobs after they got extracted 286eba3fbd6SAndreas Dannenberg from FIT images like stripping off headers or modifying the size of the 287eba3fbd6SAndreas Dannenberg blob, verification, authentication, decryption etc. in a platform or 288eba3fbd6SAndreas Dannenberg board specific way. In order to use this feature a platform or board- 289eba3fbd6SAndreas Dannenberg specific implementation of board_fit_image_post_process() must be 290eba3fbd6SAndreas Dannenberg provided. Also, anything done during this post-processing step would 291eba3fbd6SAndreas Dannenberg need to be comprehended in how the images were prepared before being 292eba3fbd6SAndreas Dannenberg injected into the FIT creation (i.e. the blobs would have been pre- 293eba3fbd6SAndreas Dannenberg processed before being added to the FIT image). 294eba3fbd6SAndreas Dannenberg 295bc5dbcb9SB, Raviconfig SPL_DFU_SUPPORT 296bc5dbcb9SB, Ravi bool "Enable SPL with DFU to load binaries to memory device" 297bc5dbcb9SB, Ravi depends on USB 298bc5dbcb9SB, Ravi help 299bc5dbcb9SB, Ravi Currently the SPL does not have capability to load the 300bc5dbcb9SB, Ravi binaries or boot images to boot devices like ram,eMMC,SPI,etc. 301bc5dbcb9SB, Ravi This feature enables the DFU (Device Firmware Upgarde) in SPL with 302bc5dbcb9SB, Ravi RAM memory device support. The ROM code will load and execute 303bc5dbcb9SB, Ravi the SPL built with dfu. The user can load binaries (u-boot/kernel) to 304bc5dbcb9SB, Ravi selected device partition from host-pc using dfu-utils. 305bc5dbcb9SB, Ravi This feature will be useful to flash the binaries to factory 306bc5dbcb9SB, Ravi or bare-metal boards using USB interface. 307bc5dbcb9SB, Ravi 308bc5dbcb9SB, Ravichoice 309bc5dbcb9SB, Ravi bool "DFU device selection" 310bc5dbcb9SB, Ravi depends on SPL_DFU_SUPPORT 311bc5dbcb9SB, Ravi 312bc5dbcb9SB, Raviconfig SPL_DFU_RAM 313bc5dbcb9SB, Ravi bool "RAM device" 314bc5dbcb9SB, Ravi depends on SPL_DFU_SUPPORT 315bc5dbcb9SB, Ravi help 316bc5dbcb9SB, Ravi select RAM/DDR memory device for loading binary images 317bc5dbcb9SB, Ravi (u-boot/kernel) to the selected device partition using 318bc5dbcb9SB, Ravi DFU and execute the u-boot/kernel from RAM. 319bc5dbcb9SB, Ravi 320bc5dbcb9SB, Raviendchoice 321bc5dbcb9SB, Ravi 32233d88183SAlexey Brodkinconfig SYS_CLK_FREQ 323e71b422bSIain Paton depends on ARC || ARCH_SUNXI 32433d88183SAlexey Brodkin int "CPU clock frequency" 32533d88183SAlexey Brodkin help 32633d88183SAlexey Brodkin TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture 32733d88183SAlexey Brodkin 328e2f88dfdSMichal Simekconfig ARCH_FIXUP_FDT 329e2f88dfdSMichal Simek bool "Enable arch_fixup_fdt() call" 330e2f88dfdSMichal Simek depends on ARM || MIPS 331e2f88dfdSMichal Simek default y 332e2f88dfdSMichal Simek help 333e2f88dfdSMichal Simek Enable FDT memory map syncup before OS boot. This feature can be 334e2f88dfdSMichal Simek used for booting OS with different memory setup where the part of 335e2f88dfdSMichal Simek the memory location should be used for different purpose. 336e2f88dfdSMichal Simek 337e91c3c33SMasahiro Yamadaendmenu # Boot images 33851631259SMasahiro Yamada 339ed36323fSMasahiro Yamadasource "common/Kconfig" 340ed36323fSMasahiro Yamada 34172a8cf8dSSimon Glasssource "cmd/Kconfig" 34272a8cf8dSSimon Glass 343783e6a72SMasahiro Yamadasource "dts/Kconfig" 344783e6a72SMasahiro Yamada 345ed36323fSMasahiro Yamadasource "net/Kconfig" 346ed36323fSMasahiro Yamada 347ed36323fSMasahiro Yamadasource "drivers/Kconfig" 348ed36323fSMasahiro Yamada 349ed36323fSMasahiro Yamadasource "fs/Kconfig" 350ed36323fSMasahiro Yamada 351ed36323fSMasahiro Yamadasource "lib/Kconfig" 3521967982aSSimon Glass 3531967982aSSimon Glasssource "test/Kconfig" 354