Kconfig 16 KB

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  1. #
  2. # For a description of the syntax of this configuration file,
  3. # see the file Documentation/kbuild/kconfig-language.txt in the
  4. # Linux kernel source tree.
  5. #
  6. mainmenu "U-Boot $UBOOTVERSION Configuration"
  7. config UBOOTVERSION
  8. string
  9. option env="UBOOTVERSION"
  10. # Allow defaults in arch-specific code to override any given here
  11. source "arch/Kconfig"
  12. menu "General setup"
  13. config BROKEN
  14. bool
  15. help
  16. This option cannot be enabled. It is used as dependency
  17. for broken and incomplete features.
  18. config LOCALVERSION
  19. string "Local version - append to U-Boot release"
  20. help
  21. Append an extra string to the end of your U-Boot version.
  22. This will show up in your boot log, for example.
  23. The string you set here will be appended after the contents of
  24. any files with a filename matching localversion* in your
  25. object and source tree, in that order. Your total string can
  26. be a maximum of 64 characters.
  27. config LOCALVERSION_AUTO
  28. bool "Automatically append version information to the version string"
  29. default y
  30. help
  31. This will try to automatically determine if the current tree is a
  32. release tree by looking for Git tags that belong to the current
  33. top of tree revision.
  34. A string of the format -gxxxxxxxx will be added to the localversion
  35. if a Git-based tree is found. The string generated by this will be
  36. appended after any matching localversion* files, and after the value
  37. set in CONFIG_LOCALVERSION.
  38. (The actual string used here is the first eight characters produced
  39. by running the command:
  40. $ git rev-parse --verify HEAD
  41. which is done within the script "scripts/setlocalversion".)
  42. config CC_OPTIMIZE_FOR_SIZE
  43. bool "Optimize for size"
  44. default y
  45. help
  46. Enabling this option will pass "-Os" instead of "-O2" to gcc
  47. resulting in a smaller U-Boot image.
  48. This option is enabled by default for U-Boot.
  49. config CC_COVERAGE
  50. bool "Enable code coverage analysis"
  51. depends on SANDBOX
  52. help
  53. Enabling this option will pass "--coverage" to gcc to compile
  54. and link code instrumented for coverage analysis.
  55. config DISTRO_DEFAULTS
  56. bool "Select defaults suitable for booting general purpose Linux distributions"
  57. default y if ARCH_SUNXI || TEGRA
  58. default y if ARCH_LS2080A
  59. default y if ARCH_MESON
  60. default y if ARCH_ROCKCHIP
  61. default n
  62. imply USE_BOOTCOMMAND
  63. select CMD_BOOTZ if ARM && !ARM64
  64. select CMD_BOOTI if ARM64
  65. select CMD_DHCP if NET && CMD_NET
  66. select CMD_PXE if NET && CMD_NET
  67. select CMD_EXT2
  68. select CMD_EXT4
  69. select CMD_FAT
  70. select CMD_FS_GENERIC
  71. imply CMD_MII if NET
  72. select CMD_PING if NET
  73. select CMD_PART if PARTITIONS
  74. select HUSH_PARSER
  75. select BOOTP_BOOTPATH if NET && CMD_NET
  76. select BOOTP_DNS if NET && CMD_NET
  77. select BOOTP_GATEWAY if NET && CMD_NET
  78. select BOOTP_HOSTNAME if NET && CMD_NET
  79. select BOOTP_PXE if NET && CMD_NET
  80. select BOOTP_SUBNETMASK if NET && CMD_NET
  81. select CMDLINE_EDITING
  82. select AUTO_COMPLETE
  83. select SYS_LONGHELP
  84. select SUPPORT_RAW_INITRD
  85. select ENV_VARS_UBOOT_CONFIG
  86. help
  87. Select this to enable various options and commands which are suitable
  88. for building u-boot for booting general purpose Linux distributions.
  89. config ENV_VARS_UBOOT_CONFIG
  90. bool "Add arch, board, vendor and soc variables to default environment"
  91. help
  92. Define this in order to add variables describing the
  93. U-Boot build configuration to the default environment.
  94. These will be named arch, cpu, board, vendor, and soc.
  95. Enabling this option will cause the following to be defined:
  96. - CONFIG_SYS_ARCH
  97. - CONFIG_SYS_CPU
  98. - CONFIG_SYS_BOARD
  99. - CONFIG_SYS_VENDOR
  100. - CONFIG_SYS_SOC
  101. config SYS_BOOT_GET_CMDLINE
  102. bool "Enable kernel command line setup"
  103. help
  104. Enables allocating and saving kernel cmdline in space between
  105. "bootm_low" and "bootm_low" + BOOTMAPSZ.
  106. config SYS_BOOT_GET_KBD
  107. bool "Enable kernel board information setup"
  108. help
  109. Enables allocating and saving a kernel copy of the bd_info in
  110. space between "bootm_low" and "bootm_low" + BOOTMAPSZ.
  111. config SYS_MALLOC_F
  112. bool "Enable malloc() pool before relocation"
  113. default y if DM
  114. help
  115. Before relocation, memory is very limited on many platforms. Still,
  116. we can provide a small malloc() pool if needed. Driver model in
  117. particular needs this to operate, so that it can allocate the
  118. initial serial device and any others that are needed.
  119. config SYS_MALLOC_F_LEN
  120. hex "Size of malloc() pool before relocation"
  121. depends on SYS_MALLOC_F
  122. default 0x400
  123. help
  124. Before relocation, memory is very limited on many platforms. Still,
  125. we can provide a small malloc() pool if needed. Driver model in
  126. particular needs this to operate, so that it can allocate the
  127. initial serial device and any others that are needed.
  128. config SPL_SYS_MALLOC_F_LEN
  129. hex "Size of malloc() pool in SPL before relocation"
  130. depends on SYS_MALLOC_F
  131. default SYS_MALLOC_F_LEN
  132. help
  133. Before relocation, memory is very limited on many platforms. Still,
  134. we can provide a small malloc() pool if needed. Driver model in
  135. particular needs this to operate, so that it can allocate the
  136. initial serial device and any others that are needed.
  137. config TPL_SYS_MALLOC_F_LEN
  138. hex "Size of malloc() pool in TPL before relocation"
  139. depends on SYS_MALLOC_F
  140. default SYS_MALLOC_F_LEN
  141. help
  142. Before relocation, memory is very limited on many platforms. Still,
  143. we can provide a small malloc() pool if needed. Driver model in
  144. particular needs this to operate, so that it can allocate the
  145. initial serial device and any others that are needed.
  146. menuconfig EXPERT
  147. bool "Configure standard U-Boot features (expert users)"
  148. default y
  149. help
  150. This option allows certain base U-Boot options and settings
  151. to be disabled or tweaked. This is for specialized
  152. environments which can tolerate a "non-standard" U-Boot.
  153. Use this only if you really know what you are doing.
  154. if EXPERT
  155. config SYS_MALLOC_CLEAR_ON_INIT
  156. bool "Init with zeros the memory reserved for malloc (slow)"
  157. default y
  158. help
  159. This setting is enabled by default. The reserved malloc
  160. memory is initialized with zeros, so first malloc calls
  161. will return the pointer to the zeroed memory. But this
  162. slows the boot time.
  163. It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
  164. value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
  165. Then the boot time can be significantly reduced.
  166. Warning:
  167. When disabling this, please check if malloc calls, maybe
  168. should be replaced by calloc - if one expects zeroed memory.
  169. config TOOLS_DEBUG
  170. bool "Enable debug information for tools"
  171. help
  172. Enable generation of debug information for tools such as mkimage.
  173. This can be used for debugging purposes. With debug information
  174. it is possible to set breakpoints on particular lines, single-step
  175. debug through the source code, etc.
  176. endif # EXPERT
  177. config PHYS_64BIT
  178. bool "64bit physical address support"
  179. help
  180. Say Y here to support 64bit physical memory address.
  181. This can be used not only for 64bit SoCs, but also for
  182. large physical address extention on 32bit SoCs.
  183. config BUILD_ROM
  184. bool "Build U-Boot as BIOS replacement"
  185. depends on X86
  186. help
  187. This option allows to build a ROM version of U-Boot.
  188. The build process generally requires several binary blobs
  189. which are not shipped in the U-Boot source tree.
  190. Please, see doc/README.x86 for details.
  191. endmenu # General setup
  192. menu "Boot images"
  193. config ANDROID_BOOT_IMAGE
  194. bool "Enable support for Android Boot Images"
  195. default y if FASTBOOT
  196. help
  197. This enables support for booting images which use the Android
  198. image format header.
  199. config FIT
  200. bool "Support Flattened Image Tree"
  201. select MD5
  202. select SHA1
  203. help
  204. This option allows you to boot the new uImage structure,
  205. Flattened Image Tree. FIT is formally a FDT, which can include
  206. images of various types (kernel, FDT blob, ramdisk, etc.)
  207. in a single blob. To boot this new uImage structure,
  208. pass the address of the blob to the "bootm" command.
  209. FIT is very flexible, supporting compression, multiple images,
  210. multiple configurations, verification through hashing and also
  211. verified boot (secure boot using RSA).
  212. if FIT
  213. config FIT_ENABLE_SHA256_SUPPORT
  214. bool "Support SHA256 checksum of FIT image contents"
  215. select SHA256
  216. default y
  217. help
  218. Enable this to support SHA256 checksum of FIT image contents. A
  219. SHA256 checksum is a 256-bit (32-byte) hash value used to check that
  220. the image contents have not been corrupted. SHA256 is recommended
  221. for use in secure applications since (as at 2016) there is no known
  222. feasible attack that could produce a 'collision' with differing
  223. input data. Use this for the highest security. Note that only the
  224. SHA256 variant is supported: SHA512 and others are not currently
  225. supported in U-Boot.
  226. config FIT_SIGNATURE
  227. bool "Enable signature verification of FIT uImages"
  228. depends on DM
  229. select RSA
  230. help
  231. This option enables signature verification of FIT uImages,
  232. using a hash signed and verified using RSA. If
  233. CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
  234. hashing is available using hardware, then the RSA library will use
  235. it. See doc/uImage.FIT/signature.txt for more details.
  236. WARNING: When relying on signed FIT images with a required signature
  237. check the legacy image format is disabled by default, so that
  238. unsigned images cannot be loaded. If a board needs the legacy image
  239. format support in this case, enable it using
  240. CONFIG_IMAGE_FORMAT_LEGACY.
  241. config FIT_VERBOSE
  242. bool "Show verbose messages when FIT images fail"
  243. help
  244. Generally a system will have valid FIT images so debug messages
  245. are a waste of code space. If you are debugging your images then
  246. you can enable this option to get more verbose information about
  247. failures.
  248. config FIT_BEST_MATCH
  249. bool "Select the best match for the kernel device tree"
  250. help
  251. When no configuration is explicitly selected, default to the
  252. one whose fdt's compatibility field best matches that of
  253. U-Boot itself. A match is considered "best" if it matches the
  254. most specific compatibility entry of U-Boot's fdt's root node.
  255. The order of entries in the configuration's fdt is ignored.
  256. config FIT_IMAGE_POST_PROCESS
  257. bool "Enable post-processing of FIT artifacts after loading by U-Boot"
  258. depends on TI_SECURE_DEVICE
  259. help
  260. Allows doing any sort of manipulation to blobs after they got extracted
  261. from FIT images like stripping off headers or modifying the size of the
  262. blob, verification, authentication, decryption etc. in a platform or
  263. board specific way. In order to use this feature a platform or board-
  264. specific implementation of board_fit_image_post_process() must be
  265. provided. Also, anything done during this post-processing step would
  266. need to be comprehended in how the images were prepared before being
  267. injected into the FIT creation (i.e. the blobs would have been pre-
  268. processed before being added to the FIT image).
  269. if SPL
  270. config SPL_FIT
  271. bool "Support Flattened Image Tree within SPL"
  272. depends on SPL
  273. select SPL_OF_LIBFDT
  274. config SPL_FIT_SIGNATURE
  275. bool "Enable signature verification of FIT firmware within SPL"
  276. depends on SPL_DM
  277. select SPL_FIT
  278. select SPL_RSA
  279. config SPL_LOAD_FIT
  280. bool "Enable SPL loading U-Boot as a FIT"
  281. select SPL_FIT
  282. help
  283. Normally with the SPL framework a legacy image is generated as part
  284. of the build. This contains U-Boot along with information as to
  285. where it should be loaded. This option instead enables generation
  286. of a FIT (Flat Image Tree) which provides more flexibility. In
  287. particular it can handle selecting from multiple device tree
  288. and passing the correct one to U-Boot.
  289. config SPL_FIT_IMAGE_POST_PROCESS
  290. bool "Enable post-processing of FIT artifacts after loading by the SPL"
  291. depends on SPL_LOAD_FIT
  292. help
  293. Allows doing any sort of manipulation to blobs after they got extracted
  294. from the U-Boot FIT image like stripping off headers or modifying the
  295. size of the blob, verification, authentication, decryption etc. in a
  296. platform or board specific way. In order to use this feature a platform
  297. or board-specific implementation of board_fit_image_post_process() must
  298. be provided. Also, anything done during this post-processing step would
  299. need to be comprehended in how the images were prepared before being
  300. injected into the FIT creation (i.e. the blobs would have been pre-
  301. processed before being added to the FIT image).
  302. config SPL_FIT_SOURCE
  303. string ".its source file for U-Boot FIT image"
  304. depends on SPL_FIT
  305. help
  306. Specifies a (platform specific) FIT source file to generate the
  307. U-Boot FIT image. This could specify further image to load and/or
  308. execute.
  309. config SPL_FIT_GENERATOR
  310. string ".its file generator script for U-Boot FIT image"
  311. depends on SPL_FIT
  312. default "board/sunxi/mksunxi_fit_atf.sh" if SPL_LOAD_FIT && ARCH_SUNXI
  313. help
  314. Specifies a (platform specific) script file to generate the FIT
  315. source file used to build the U-Boot FIT image file. This gets
  316. passed a list of supported device tree file stub names to
  317. include in the generated image.
  318. endif # SPL
  319. endif # FIT
  320. config OF_BOARD_SETUP
  321. bool "Set up board-specific details in device tree before boot"
  322. depends on OF_LIBFDT
  323. help
  324. This causes U-Boot to call ft_board_setup() before booting into
  325. the Operating System. This function can set up various
  326. board-specific information in the device tree for use by the OS.
  327. The device tree is then passed to the OS.
  328. config OF_SYSTEM_SETUP
  329. bool "Set up system-specific details in device tree before boot"
  330. depends on OF_LIBFDT
  331. help
  332. This causes U-Boot to call ft_system_setup() before booting into
  333. the Operating System. This function can set up various
  334. system-specific information in the device tree for use by the OS.
  335. The device tree is then passed to the OS.
  336. config OF_STDOUT_VIA_ALIAS
  337. bool "Update the device-tree stdout alias from U-Boot"
  338. depends on OF_LIBFDT
  339. help
  340. This uses U-Boot's serial alias from the aliases node to update
  341. the device tree passed to the OS. The "linux,stdout-path" property
  342. in the chosen node is set to point to the correct serial node.
  343. This option currently references CONFIG_CONS_INDEX, which is
  344. incorrect when used with device tree as this option does not
  345. exist / should not be used.
  346. config SYS_EXTRA_OPTIONS
  347. string "Extra Options (DEPRECATED)"
  348. help
  349. The old configuration infrastructure (= mkconfig + boards.cfg)
  350. provided the extra options field. If you have something like
  351. "HAS_BAR,BAZ=64", the optional options
  352. #define CONFIG_HAS
  353. #define CONFIG_BAZ 64
  354. will be defined in include/config.h.
  355. This option was prepared for the smooth migration from the old
  356. configuration to Kconfig. Since this option will be removed sometime,
  357. new boards should not use this option.
  358. config SYS_TEXT_BASE
  359. depends on !NIOS2 && !XTENSA
  360. depends on !EFI_APP
  361. default 0x80800000 if ARCH_OMAP2PLUS
  362. default 0x4a000000 if ARCH_SUNXI && !MACH_SUN9I && !MACH_SUN8I_V3S
  363. default 0x2a000000 if ARCH_SUNXI && MACH_SUN9I
  364. default 0x42e00000 if ARCH_SUNXI && MACH_SUN8I_V3S
  365. hex "Text Base"
  366. help
  367. The address in memory that U-Boot will be running from, initially.
  368. config SYS_CLK_FREQ
  369. depends on ARC || ARCH_SUNXI
  370. int "CPU clock frequency"
  371. help
  372. TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
  373. config ARCH_FIXUP_FDT_MEMORY
  374. bool "Enable arch_fixup_memory_banks() call"
  375. default y
  376. help
  377. Enable FDT memory map syncup before OS boot. This feature can be
  378. used for booting OS with different memory setup where the part of
  379. the memory location should be used for different purpose.
  380. endmenu # Boot images
  381. source "api/Kconfig"
  382. source "common/Kconfig"
  383. source "cmd/Kconfig"
  384. source "disk/Kconfig"
  385. source "dts/Kconfig"
  386. source "env/Kconfig"
  387. source "net/Kconfig"
  388. source "drivers/Kconfig"
  389. source "fs/Kconfig"
  390. source "lib/Kconfig"
  391. source "test/Kconfig"