Kconfig 13 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 LOCALVERSION
  14. string "Local version - append to U-Boot release"
  15. help
  16. Append an extra string to the end of your U-Boot version.
  17. This will show up in your boot log, for example.
  18. The string you set here will be appended after the contents of
  19. any files with a filename matching localversion* in your
  20. object and source tree, in that order. Your total string can
  21. be a maximum of 64 characters.
  22. config LOCALVERSION_AUTO
  23. bool "Automatically append version information to the version string"
  24. default y
  25. help
  26. This will try to automatically determine if the current tree is a
  27. release tree by looking for Git tags that belong to the current
  28. top of tree revision.
  29. A string of the format -gxxxxxxxx will be added to the localversion
  30. if a Git-based tree is found. The string generated by this will be
  31. appended after any matching localversion* files, and after the value
  32. set in CONFIG_LOCALVERSION.
  33. (The actual string used here is the first eight characters produced
  34. by running the command:
  35. $ git rev-parse --verify HEAD
  36. which is done within the script "scripts/setlocalversion".)
  37. config CC_OPTIMIZE_FOR_SIZE
  38. bool "Optimize for size"
  39. default y
  40. help
  41. Enabling this option will pass "-Os" instead of "-O2" to gcc
  42. resulting in a smaller U-Boot image.
  43. This option is enabled by default for U-Boot.
  44. config DISTRO_DEFAULTS
  45. bool "Select defaults suitable for booting general purpose Linux distributions"
  46. default y if ARCH_SUNXI
  47. default n
  48. select CMD_BOOTZ if ARM && !ARM64
  49. select CMD_BOOTI if ARM64
  50. select CMD_DHCP
  51. select CMD_EXT2
  52. select CMD_EXT4
  53. select CMD_FAT
  54. select CMD_FS_GENERIC
  55. select CMD_MII
  56. select CMD_PING
  57. select HUSH_PARSER
  58. help
  59. Select this to enable various options and commands which are suitable
  60. for building u-boot for booting general purpose Linux distributions.
  61. config SYS_MALLOC_F
  62. bool "Enable malloc() pool before relocation"
  63. default y if DM
  64. help
  65. Before relocation, memory is very limited on many platforms. Still,
  66. we can provide a small malloc() pool if needed. Driver model in
  67. particular needs this to operate, so that it can allocate the
  68. initial serial device and any others that are needed.
  69. config SYS_MALLOC_F_LEN
  70. hex "Size of malloc() pool before relocation"
  71. depends on SYS_MALLOC_F
  72. default 0x400
  73. help
  74. Before relocation, memory is very limited on many platforms. Still,
  75. we can provide a small malloc() pool if needed. Driver model in
  76. particular needs this to operate, so that it can allocate the
  77. initial serial device and any others that are needed.
  78. menuconfig EXPERT
  79. bool "Configure standard U-Boot features (expert users)"
  80. default y
  81. help
  82. This option allows certain base U-Boot options and settings
  83. to be disabled or tweaked. This is for specialized
  84. environments which can tolerate a "non-standard" U-Boot.
  85. Use this only if you really know what you are doing.
  86. if EXPERT
  87. config SYS_MALLOC_CLEAR_ON_INIT
  88. bool "Init with zeros the memory reserved for malloc (slow)"
  89. default y
  90. help
  91. This setting is enabled by default. The reserved malloc
  92. memory is initialized with zeros, so first malloc calls
  93. will return the pointer to the zeroed memory. But this
  94. slows the boot time.
  95. It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
  96. value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
  97. Then the boot time can be significantly reduced.
  98. Warning:
  99. When disabling this, please check if malloc calls, maybe
  100. should be replaced by calloc - if one expects zeroed memory.
  101. config TOOLS_DEBUG
  102. bool "Enable debug information for tools"
  103. help
  104. Enable generation of debug information for tools such as mkimage.
  105. This can be used for debugging purposes. With debug information
  106. it is possible to set breakpoints on particular lines, single-step
  107. debug through the source code, etc.
  108. endif
  109. config PHYS_64BIT
  110. bool "64bit physical address support"
  111. help
  112. Say Y here to support 64bit physical memory address.
  113. This can be used not only for 64bit SoCs, but also for
  114. large physical address extention on 32bit SoCs.
  115. endmenu # General setup
  116. menu "Boot images"
  117. config SUPPORT_SPL
  118. bool
  119. config SUPPORT_TPL
  120. bool
  121. config SPL
  122. bool
  123. depends on SUPPORT_SPL
  124. prompt "Enable SPL"
  125. help
  126. If you want to build SPL as well as the normal image, say Y.
  127. config SPL_SYS_MALLOC_SIMPLE
  128. bool
  129. depends on SPL
  130. prompt "Only use malloc_simple functions in the SPL"
  131. help
  132. Say Y here to only use the *_simple malloc functions from
  133. malloc_simple.c, rather then using the versions from dlmalloc.c;
  134. this will make the SPL binary smaller at the cost of more heap
  135. usage as the *_simple malloc functions do not re-use free-ed mem.
  136. config SPL_STACK_R
  137. depends on SPL
  138. bool "Enable SDRAM location for SPL stack"
  139. help
  140. SPL starts off execution in SRAM and thus typically has only a small
  141. stack available. Since SPL sets up DRAM while in its board_init_f()
  142. function, it is possible for the stack to move there before
  143. board_init_r() is reached. This option enables a special SDRAM
  144. location for the SPL stack. U-Boot SPL switches to this after
  145. board_init_f() completes, and before board_init_r() starts.
  146. config SPL_STACK_R_ADDR
  147. depends on SPL_STACK_R
  148. hex "SDRAM location for SPL stack"
  149. help
  150. Specify the address in SDRAM for the SPL stack. This will be set up
  151. before board_init_r() is called.
  152. config SPL_STACK_R_MALLOC_SIMPLE_LEN
  153. depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE
  154. hex "Size of malloc_simple heap after switching to DRAM SPL stack"
  155. default 0x100000
  156. help
  157. Specify the amount of the stack to use as memory pool for
  158. malloc_simple after switching the stack to DRAM. This may be set
  159. to give board_init_r() a larger heap then the initial heap in
  160. SRAM which is limited to SYS_MALLOC_F_LEN bytes.
  161. config SPL_SEPARATE_BSS
  162. depends on SPL
  163. bool "BSS section is in a different memory region from text"
  164. help
  165. Some platforms need a large BSS region in SPL and can provide this
  166. because RAM is already set up. In this case BSS can be moved to RAM.
  167. This option should then be enabled so that the correct device tree
  168. location is used. Normally we put the device tree at the end of BSS
  169. but with this option enabled, it goes at _image_binary_end.
  170. config TPL
  171. bool
  172. depends on SPL && SUPPORT_TPL
  173. prompt "Enable TPL"
  174. help
  175. If you want to build TPL as well as the normal image and SPL, say Y.
  176. config FIT
  177. bool "Support Flattened Image Tree"
  178. help
  179. This option allows to boot the new uImage structrure,
  180. Flattened Image Tree. FIT is formally a FDT, which can include
  181. images of various types (kernel, FDT blob, ramdisk, etc.)
  182. in a single blob. To boot this new uImage structure,
  183. pass the address of the blob to the "bootm" command.
  184. FIT is very flexible, supporting compression, multiple images,
  185. multiple configurations, verification through hashing and also
  186. verified boot (secure boot using RSA). This option enables that
  187. feature.
  188. config SPL_FIT
  189. bool "Support Flattened Image Tree within SPL"
  190. depends on FIT
  191. depends on SPL
  192. config FIT_VERBOSE
  193. bool "Display verbose messages on FIT boot"
  194. depends on FIT
  195. config FIT_SIGNATURE
  196. bool "Enable signature verification of FIT uImages"
  197. depends on FIT
  198. depends on DM
  199. select RSA
  200. help
  201. This option enables signature verification of FIT uImages,
  202. using a hash signed and verified using RSA. If
  203. CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
  204. hashing is available using hardware, then then RSA library will use
  205. it. See doc/uImage.FIT/signature.txt for more details.
  206. WARNING: When relying on signed FIT images with a required signature
  207. check the legacy image format is disabled by default, so that
  208. unsigned images cannot be loaded. If a board needs the legacy image
  209. format support in this case, enable it using
  210. CONFIG_IMAGE_FORMAT_LEGACY.
  211. config SPL_FIT_SIGNATURE
  212. bool "Enable signature verification of FIT firmware within SPL"
  213. depends on SPL_FIT
  214. depends on SPL_DM
  215. select SPL_RSA
  216. config FIT_BEST_MATCH
  217. bool "Select the best match for the kernel device tree"
  218. depends on FIT
  219. help
  220. When no configuration is explicitly selected, default to the
  221. one whose fdt's compatibility field best matches that of
  222. U-Boot itself. A match is considered "best" if it matches the
  223. most specific compatibility entry of U-Boot's fdt's root node.
  224. The order of entries in the configuration's fdt is ignored.
  225. config FIT_VERBOSE
  226. bool "Show verbose messages when FIT images fails"
  227. depends on FIT
  228. help
  229. Generally a system will have valid FIT images so debug messages
  230. are a waste of code space. If you are debugging your images then
  231. you can enable this option to get more verbose information about
  232. failures.
  233. config OF_BOARD_SETUP
  234. bool "Set up board-specific details in device tree before boot"
  235. depends on OF_LIBFDT
  236. help
  237. This causes U-Boot to call ft_board_setup() before booting into
  238. the Operating System. This function can set up various
  239. board-specific information in the device tree for use by the OS.
  240. The device tree is then passed to the OS.
  241. config OF_SYSTEM_SETUP
  242. bool "Set up system-specific details in device tree before boot"
  243. depends on OF_LIBFDT
  244. help
  245. This causes U-Boot to call ft_system_setup() before booting into
  246. the Operating System. This function can set up various
  247. system-specific information in the device tree for use by the OS.
  248. The device tree is then passed to the OS.
  249. config OF_STDOUT_VIA_ALIAS
  250. bool "Update the device-tree stdout alias from U-Boot"
  251. depends on OF_LIBFDT
  252. help
  253. This uses U-Boot's serial alias from the aliases node to update
  254. the device tree passed to the OS. The "linux,stdout-path" property
  255. in the chosen node is set to point to the correct serial node.
  256. This option currently references CONFIG_CONS_INDEX, which is
  257. incorrect when used with device tree as this option does not
  258. exist / should not be used.
  259. config SYS_EXTRA_OPTIONS
  260. string "Extra Options (DEPRECATED)"
  261. help
  262. The old configuration infrastructure (= mkconfig + boards.cfg)
  263. provided the extra options field. If you have something like
  264. "HAS_BAR,BAZ=64", the optional options
  265. #define CONFIG_HAS
  266. #define CONFIG_BAZ 64
  267. will be defined in include/config.h.
  268. This option was prepared for the smooth migration from the old
  269. configuration to Kconfig. Since this option will be removed sometime,
  270. new boards should not use this option.
  271. config SYS_TEXT_BASE
  272. depends on SPARC || ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \
  273. (M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE || MIPS
  274. depends on !EFI_APP
  275. hex "Text Base"
  276. help
  277. TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture
  278. config SPL_LOAD_FIT
  279. bool "Enable SPL loading U-Boot as a FIT"
  280. depends on FIT
  281. help
  282. Normally with the SPL framework a legacy image is generated as part
  283. of the build. This contains U-Boot along with information as to
  284. where it should be loaded. This option instead enables generation
  285. of a FIT (Flat Image Tree) which provides more flexibility. In
  286. particular it can handle selecting from multiple device tree
  287. and passing the correct one to U-Boot.
  288. config SPL_FIT_IMAGE_POST_PROCESS
  289. bool "Enable post-processing of FIT artifacts after loading by the SPL"
  290. depends on SPL_LOAD_FIT && TI_SECURE_DEVICE
  291. help
  292. Allows doing any sort of manipulation to blobs after they got extracted
  293. from the U-Boot FIT image like stripping off headers or modifying the
  294. size of the blob, verification, authentication, decryption etc. in a
  295. platform or board specific way. In order to use this feature a platform
  296. or board-specific implementation of board_fit_image_post_process() must
  297. be provided. Also, anything done during this post-processing step would
  298. need to be comprehended in how the images were prepared before being
  299. injected into the FIT creation (i.e. the blobs would have been pre-
  300. processed before being added to the FIT image).
  301. config FIT_IMAGE_POST_PROCESS
  302. bool "Enable post-processing of FIT artifacts after loading by U-Boot"
  303. depends on FIT && TI_SECURE_DEVICE
  304. help
  305. Allows doing any sort of manipulation to blobs after they got extracted
  306. from FIT images like stripping off headers or modifying the size of the
  307. blob, verification, authentication, decryption etc. in a platform or
  308. board specific way. In order to use this feature a platform or board-
  309. specific implementation of board_fit_image_post_process() must be
  310. provided. Also, anything done during this post-processing step would
  311. need to be comprehended in how the images were prepared before being
  312. injected into the FIT creation (i.e. the blobs would have been pre-
  313. processed before being added to the FIT image).
  314. config SYS_CLK_FREQ
  315. depends on ARC || ARCH_SUNXI
  316. int "CPU clock frequency"
  317. help
  318. TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
  319. config ARCH_FIXUP_FDT
  320. bool "Enable arch_fixup_fdt() call"
  321. depends on ARM || MIPS
  322. default y
  323. help
  324. Enable FDT memory map syncup before OS boot. This feature can be
  325. used for booting OS with different memory setup where the part of
  326. the memory location should be used for different purpose.
  327. endmenu # Boot images
  328. source "common/Kconfig"
  329. source "cmd/Kconfig"
  330. source "dts/Kconfig"
  331. source "net/Kconfig"
  332. source "drivers/Kconfig"
  333. source "fs/Kconfig"
  334. source "lib/Kconfig"
  335. source "test/Kconfig"