Kconfig 12 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
  49. select CMD_DHCP
  50. select CMD_EXT2
  51. select CMD_EXT4
  52. select CMD_FAT
  53. select CMD_FS_GENERIC
  54. select CMD_MII
  55. select CMD_PING
  56. select HUSH_PARSER
  57. help
  58. Select this to enable various options and commands which are suitable
  59. for building u-boot for booting general purpose Linux distributions.
  60. config SYS_MALLOC_F
  61. bool "Enable malloc() pool before relocation"
  62. default y if DM
  63. help
  64. Before relocation, memory is very limited on many platforms. Still,
  65. we can provide a small malloc() pool if needed. Driver model in
  66. particular needs this to operate, so that it can allocate the
  67. initial serial device and any others that are needed.
  68. config SYS_MALLOC_F_LEN
  69. hex "Size of malloc() pool before relocation"
  70. depends on SYS_MALLOC_F
  71. default 0x400
  72. help
  73. Before relocation, memory is very limited on many platforms. Still,
  74. we can provide a small malloc() pool if needed. Driver model in
  75. particular needs this to operate, so that it can allocate the
  76. initial serial device and any others that are needed.
  77. menuconfig EXPERT
  78. bool "Configure standard U-Boot features (expert users)"
  79. default y
  80. help
  81. This option allows certain base U-Boot options and settings
  82. to be disabled or tweaked. This is for specialized
  83. environments which can tolerate a "non-standard" U-Boot.
  84. Use this only if you really know what you are doing.
  85. if EXPERT
  86. config SYS_MALLOC_CLEAR_ON_INIT
  87. bool "Init with zeros the memory reserved for malloc (slow)"
  88. default y
  89. help
  90. This setting is enabled by default. The reserved malloc
  91. memory is initialized with zeros, so first malloc calls
  92. will return the pointer to the zeroed memory. But this
  93. slows the boot time.
  94. It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
  95. value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
  96. Then the boot time can be significantly reduced.
  97. Warning:
  98. When disabling this, please check if malloc calls, maybe
  99. should be replaced by calloc - if one expects zeroed memory.
  100. config TOOLS_DEBUG
  101. bool "Enable debug information for tools"
  102. help
  103. Enable generation of debug information for tools such as mkimage.
  104. This can be used for debugging purposes. With debug information
  105. it is possible to set breakpoints on particular lines, single-step
  106. debug through the source code, etc.
  107. endif
  108. endmenu # General setup
  109. menu "Boot images"
  110. config SUPPORT_SPL
  111. bool
  112. config SUPPORT_TPL
  113. bool
  114. config SPL
  115. bool
  116. depends on SUPPORT_SPL
  117. prompt "Enable SPL"
  118. help
  119. If you want to build SPL as well as the normal image, say Y.
  120. config SPL_SYS_MALLOC_SIMPLE
  121. bool
  122. depends on SPL
  123. prompt "Only use malloc_simple functions in the SPL"
  124. help
  125. Say Y here to only use the *_simple malloc functions from
  126. malloc_simple.c, rather then using the versions from dlmalloc.c;
  127. this will make the SPL binary smaller at the cost of more heap
  128. usage as the *_simple malloc functions do not re-use free-ed mem.
  129. config SPL_STACK_R
  130. depends on SPL
  131. bool "Enable SDRAM location for SPL stack"
  132. help
  133. SPL starts off execution in SRAM and thus typically has only a small
  134. stack available. Since SPL sets up DRAM while in its board_init_f()
  135. function, it is possible for the stack to move there before
  136. board_init_r() is reached. This option enables a special SDRAM
  137. location for the SPL stack. U-Boot SPL switches to this after
  138. board_init_f() completes, and before board_init_r() starts.
  139. config SPL_STACK_R_ADDR
  140. depends on SPL_STACK_R
  141. hex "SDRAM location for SPL stack"
  142. help
  143. Specify the address in SDRAM for the SPL stack. This will be set up
  144. before board_init_r() is called.
  145. config SPL_STACK_R_MALLOC_SIMPLE_LEN
  146. depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE
  147. hex "Size of malloc_simple heap after switching to DRAM SPL stack"
  148. default 0x100000
  149. help
  150. Specify the amount of the stack to use as memory pool for
  151. malloc_simple after switching the stack to DRAM. This may be set
  152. to give board_init_r() a larger heap then the initial heap in
  153. SRAM which is limited to SYS_MALLOC_F_LEN bytes.
  154. config SPL_SEPARATE_BSS
  155. depends on SPL
  156. bool "BSS section is in a different memory region from text"
  157. help
  158. Some platforms need a large BSS region in SPL and can provide this
  159. because RAM is already set up. In this case BSS can be moved to RAM.
  160. This option should then be enabled so that the correct device tree
  161. location is used. Normally we put the device tree at the end of BSS
  162. but with this option enabled, it goes at _image_binary_end.
  163. config TPL
  164. bool
  165. depends on SPL && SUPPORT_TPL
  166. prompt "Enable TPL"
  167. help
  168. If you want to build TPL as well as the normal image and SPL, say Y.
  169. config FIT
  170. bool "Support Flattened Image Tree"
  171. help
  172. This option allows to boot the new uImage structrure,
  173. Flattened Image Tree. FIT is formally a FDT, which can include
  174. images of various types (kernel, FDT blob, ramdisk, etc.)
  175. in a single blob. To boot this new uImage structure,
  176. pass the address of the blob to the "bootm" command.
  177. FIT is very flexible, supporting compression, multiple images,
  178. multiple configurations, verification through hashing and also
  179. verified boot (secure boot using RSA). This option enables that
  180. feature.
  181. config SPL_FIT
  182. bool "Support Flattened Image Tree within SPL"
  183. depends on FIT
  184. depends on SPL
  185. config FIT_VERBOSE
  186. bool "Display verbose messages on FIT boot"
  187. depends on FIT
  188. config FIT_SIGNATURE
  189. bool "Enable signature verification of FIT uImages"
  190. depends on FIT
  191. depends on DM
  192. select RSA
  193. help
  194. This option enables signature verification of FIT uImages,
  195. using a hash signed and verified using RSA. If
  196. CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
  197. hashing is available using hardware, then then RSA library will use
  198. it. See doc/uImage.FIT/signature.txt for more details.
  199. WARNING: When relying on signed FIT images with a required signature
  200. check the legacy image format is disabled by default, so that
  201. unsigned images cannot be loaded. If a board needs the legacy image
  202. format support in this case, enable it using
  203. CONFIG_IMAGE_FORMAT_LEGACY.
  204. config SPL_FIT_SIGNATURE
  205. bool "Enable signature verification of FIT firmware within SPL"
  206. depends on SPL_FIT
  207. depends on SPL_DM
  208. select SPL_RSA
  209. config FIT_BEST_MATCH
  210. bool "Select the best match for the kernel device tree"
  211. depends on FIT
  212. help
  213. When no configuration is explicitly selected, default to the
  214. one whose fdt's compatibility field best matches that of
  215. U-Boot itself. A match is considered "best" if it matches the
  216. most specific compatibility entry of U-Boot's fdt's root node.
  217. The order of entries in the configuration's fdt is ignored.
  218. config FIT_VERBOSE
  219. bool "Show verbose messages when FIT images fails"
  220. depends on FIT
  221. help
  222. Generally a system will have valid FIT images so debug messages
  223. are a waste of code space. If you are debugging your images then
  224. you can enable this option to get more verbose information about
  225. failures.
  226. config OF_BOARD_SETUP
  227. bool "Set up board-specific details in device tree before boot"
  228. depends on OF_LIBFDT
  229. help
  230. This causes U-Boot to call ft_board_setup() before booting into
  231. the Operating System. This function can set up various
  232. board-specific information in the device tree for use by the OS.
  233. The device tree is then passed to the OS.
  234. config OF_SYSTEM_SETUP
  235. bool "Set up system-specific details in device tree before boot"
  236. depends on OF_LIBFDT
  237. help
  238. This causes U-Boot to call ft_system_setup() before booting into
  239. the Operating System. This function can set up various
  240. system-specific information in the device tree for use by the OS.
  241. The device tree is then passed to the OS.
  242. config OF_STDOUT_VIA_ALIAS
  243. bool "Update the device-tree stdout alias from U-Boot"
  244. depends on OF_LIBFDT
  245. help
  246. This uses U-Boot's serial alias from the aliases node to update
  247. the device tree passed to the OS. The "linux,stdout-path" property
  248. in the chosen node is set to point to the correct serial node.
  249. This option currently references CONFIG_CONS_INDEX, which is
  250. incorrect when used with device tree as this option does not
  251. exist / should not be used.
  252. config SYS_EXTRA_OPTIONS
  253. string "Extra Options (DEPRECATED)"
  254. help
  255. The old configuration infrastructure (= mkconfig + boards.cfg)
  256. provided the extra options field. If you have something like
  257. "HAS_BAR,BAZ=64", the optional options
  258. #define CONFIG_HAS
  259. #define CONFIG_BAZ 64
  260. will be defined in include/config.h.
  261. This option was prepared for the smooth migration from the old
  262. configuration to Kconfig. Since this option will be removed sometime,
  263. new boards should not use this option.
  264. config SYS_TEXT_BASE
  265. depends on SPARC || ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \
  266. (M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE || MIPS
  267. depends on !EFI_APP
  268. hex "Text Base"
  269. help
  270. TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture
  271. config SPL_LOAD_FIT
  272. bool "Enable SPL loading U-Boot as a FIT"
  273. depends on FIT
  274. help
  275. Normally with the SPL framework a legacy image is generated as part
  276. of the build. This contains U-Boot along with information as to
  277. where it should be loaded. This option instead enables generation
  278. of a FIT (Flat Image Tree) which provides more flexibility. In
  279. particular it can handle selecting from multiple device tree
  280. and passing the correct one to U-Boot.
  281. config SPL_FIT_IMAGE_POST_PROCESS
  282. bool "Enable post-processing of FIT artifacts after loading by the SPL"
  283. depends on SPL_LOAD_FIT && TI_SECURE_DEVICE
  284. help
  285. Allows doing any sort of manipulation to blobs after they got extracted
  286. from the U-Boot FIT image like stripping off headers or modifying the
  287. size of the blob, verification, authentication, decryption etc. in a
  288. platform or board specific way. In order to use this feature a platform
  289. or board-specific implementation of board_fit_image_post_process() must
  290. be provided. Also, anything done during this post-processing step would
  291. need to be comprehended in how the images were prepared before being
  292. injected into the FIT creation (i.e. the blobs would have been pre-
  293. processed before being added to the FIT image).
  294. config SYS_CLK_FREQ
  295. depends on ARC || ARCH_SUNXI
  296. int "CPU clock frequency"
  297. help
  298. TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
  299. endmenu # Boot images
  300. source "common/Kconfig"
  301. source "cmd/Kconfig"
  302. source "dts/Kconfig"
  303. source "net/Kconfig"
  304. source "drivers/Kconfig"
  305. source "fs/Kconfig"
  306. source "lib/Kconfig"
  307. source "test/Kconfig"