Kconfig 10 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310
  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 SYS_MALLOC_F
  45. bool "Enable malloc() pool before relocation"
  46. default y if DM
  47. help
  48. Before relocation, memory is very limited on many platforms. Still,
  49. we can provide a small malloc() pool if needed. Driver model in
  50. particular needs this to operate, so that it can allocate the
  51. initial serial device and any others that are needed.
  52. config SYS_MALLOC_F_LEN
  53. hex "Size of malloc() pool before relocation"
  54. depends on SYS_MALLOC_F
  55. default 0x400
  56. help
  57. Before relocation, memory is very limited on many platforms. Still,
  58. we can provide a small malloc() pool if needed. Driver model in
  59. particular needs this to operate, so that it can allocate the
  60. initial serial device and any others that are needed.
  61. menuconfig EXPERT
  62. bool "Configure standard U-Boot features (expert users)"
  63. default y
  64. help
  65. This option allows certain base U-Boot options and settings
  66. to be disabled or tweaked. This is for specialized
  67. environments which can tolerate a "non-standard" U-Boot.
  68. Use this only if you really know what you are doing.
  69. if EXPERT
  70. config SYS_MALLOC_CLEAR_ON_INIT
  71. bool "Init with zeros the memory reserved for malloc (slow)"
  72. default y
  73. help
  74. This setting is enabled by default. The reserved malloc
  75. memory is initialized with zeros, so first malloc calls
  76. will return the pointer to the zeroed memory. But this
  77. slows the boot time.
  78. It is recommended to disable it, when CONFIG_SYS_MALLOC_LEN
  79. value, has more than few MiB, e.g. when uses bzip2 or bmp logo.
  80. Then the boot time can be significantly reduced.
  81. Warning:
  82. When disabling this, please check if malloc calls, maybe
  83. should be replaced by calloc - if one expects zeroed memory.
  84. endif
  85. endmenu # General setup
  86. menu "Boot images"
  87. config SUPPORT_SPL
  88. bool
  89. config SUPPORT_TPL
  90. bool
  91. config SPL
  92. bool
  93. depends on SUPPORT_SPL
  94. prompt "Enable SPL"
  95. help
  96. If you want to build SPL as well as the normal image, say Y.
  97. config SPL_SYS_MALLOC_SIMPLE
  98. bool
  99. depends on SPL
  100. prompt "Only use malloc_simple functions in the SPL"
  101. help
  102. Say Y here to only use the *_simple malloc functions from
  103. malloc_simple.c, rather then using the versions from dlmalloc.c;
  104. this will make the SPL binary smaller at the cost of more heap
  105. usage as the *_simple malloc functions do not re-use free-ed mem.
  106. config SPL_STACK_R
  107. depends on SPL
  108. bool "Enable SDRAM location for SPL stack"
  109. help
  110. SPL starts off execution in SRAM and thus typically has only a small
  111. stack available. Since SPL sets up DRAM while in its board_init_f()
  112. function, it is possible for the stack to move there before
  113. board_init_r() is reached. This option enables a special SDRAM
  114. location for the SPL stack. U-Boot SPL switches to this after
  115. board_init_f() completes, and before board_init_r() starts.
  116. config SPL_STACK_R_ADDR
  117. depends on SPL_STACK_R
  118. hex "SDRAM location for SPL stack"
  119. help
  120. Specify the address in SDRAM for the SPL stack. This will be set up
  121. before board_init_r() is called.
  122. config SPL_STACK_R_MALLOC_SIMPLE_LEN
  123. depends on SPL_STACK_R && SPL_SYS_MALLOC_SIMPLE
  124. hex "Size of malloc_simple heap after switching to DRAM SPL stack"
  125. default 0x100000
  126. help
  127. Specify the amount of the stack to use as memory pool for
  128. malloc_simple after switching the stack to DRAM. This may be set
  129. to give board_init_r() a larger heap then the initial heap in
  130. SRAM which is limited to SYS_MALLOC_F_LEN bytes.
  131. config SPL_SEPARATE_BSS
  132. depends on SPL
  133. bool "BSS section is in a different memory region from text"
  134. help
  135. Some platforms need a large BSS region in SPL and can provide this
  136. because RAM is already set up. In this case BSS can be moved to RAM.
  137. This option should then be enabled so that the correct device tree
  138. location is used. Normally we put the device tree at the end of BSS
  139. but with this option enabled, it goes at _image_binary_end.
  140. config TPL
  141. bool
  142. depends on SPL && SUPPORT_TPL
  143. prompt "Enable TPL"
  144. help
  145. If you want to build TPL as well as the normal image and SPL, say Y.
  146. config FIT
  147. bool "Support Flattened Image Tree"
  148. help
  149. This option allows to boot the new uImage structrure,
  150. Flattened Image Tree. FIT is formally a FDT, which can include
  151. images of various types (kernel, FDT blob, ramdisk, etc.)
  152. in a single blob. To boot this new uImage structure,
  153. pass the address of the blob to the "bootm" command.
  154. FIT is very flexible, supporting compression, multiple images,
  155. multiple configurations, verification through hashing and also
  156. verified boot (secure boot using RSA). This option enables that
  157. feature.
  158. config FIT_VERBOSE
  159. bool "Display verbose messages on FIT boot"
  160. depends on FIT
  161. config FIT_SIGNATURE
  162. bool "Enable signature verification of FIT uImages"
  163. depends on FIT
  164. depends on DM
  165. select RSA
  166. help
  167. This option enables signature verification of FIT uImages,
  168. using a hash signed and verified using RSA. If
  169. CONFIG_SHA_PROG_HW_ACCEL is defined, i.e support for progressive
  170. hashing is available using hardware, then then RSA library will use
  171. it. See doc/uImage.FIT/signature.txt for more details.
  172. WARNING: When relying on signed FIT images with a required signature
  173. check the legacy image format is disabled by default, so that
  174. unsigned images cannot be loaded. If a board needs the legacy image
  175. format support in this case, enable it using
  176. CONFIG_IMAGE_FORMAT_LEGACY.
  177. config FIT_BEST_MATCH
  178. bool "Select the best match for the kernel device tree"
  179. depends on FIT
  180. help
  181. When no configuration is explicitly selected, default to the
  182. one whose fdt's compatibility field best matches that of
  183. U-Boot itself. A match is considered "best" if it matches the
  184. most specific compatibility entry of U-Boot's fdt's root node.
  185. The order of entries in the configuration's fdt is ignored.
  186. config FIT_VERBOSE
  187. bool "Show verbose messages when FIT images fails"
  188. depends on FIT
  189. help
  190. Generally a system will have valid FIT images so debug messages
  191. are a waste of code space. If you are debugging your images then
  192. you can enable this option to get more verbose information about
  193. failures.
  194. config OF_BOARD_SETUP
  195. bool "Set up board-specific details in device tree before boot"
  196. depends on OF_LIBFDT
  197. help
  198. This causes U-Boot to call ft_board_setup() before booting into
  199. the Operating System. This function can set up various
  200. board-specific information in the device tree for use by the OS.
  201. The device tree is then passed to the OS.
  202. config OF_SYSTEM_SETUP
  203. bool "Set up system-specific details in device tree before boot"
  204. depends on OF_LIBFDT
  205. help
  206. This causes U-Boot to call ft_system_setup() before booting into
  207. the Operating System. This function can set up various
  208. system-specific information in the device tree for use by the OS.
  209. The device tree is then passed to the OS.
  210. config OF_STDOUT_VIA_ALIAS
  211. bool "Update the device-tree stdout alias from U-Boot"
  212. depends on OF_LIBFDT
  213. help
  214. This uses U-Boot's serial alias from the aliases node to update
  215. the device tree passed to the OS. The "linux,stdout-path" property
  216. in the chosen node is set to point to the correct serial node.
  217. This option currently references CONFIG_CONS_INDEX, which is
  218. incorrect when used with device tree as this option does not
  219. exist / should not be used.
  220. config SYS_EXTRA_OPTIONS
  221. string "Extra Options (DEPRECATED)"
  222. help
  223. The old configuration infrastructure (= mkconfig + boards.cfg)
  224. provided the extra options field. If you have something like
  225. "HAS_BAR,BAZ=64", the optional options
  226. #define CONFIG_HAS
  227. #define CONFIG_BAZ 64
  228. will be defined in include/config.h.
  229. This option was prepared for the smooth migration from the old
  230. configuration to Kconfig. Since this option will be removed sometime,
  231. new boards should not use this option.
  232. config SYS_TEXT_BASE
  233. depends on SPARC || ARC || X86 || ARCH_UNIPHIER || ARCH_ZYNQMP || \
  234. (M68K && !TARGET_ASTRO_MCF5373L) || MICROBLAZE || MIPS
  235. depends on !EFI_APP
  236. hex "Text Base"
  237. help
  238. TODO: Move CONFIG_SYS_TEXT_BASE for all the architecture
  239. config SPL_LOAD_FIT
  240. bool "Enable SPL loading U-Boot as a FIT"
  241. depends on FIT
  242. help
  243. Normally with the SPL framework a legacy image is generated as part
  244. of the build. This contains U-Boot along with information as to
  245. where it should be loaded. This option instead enables generation
  246. of a FIT (Flat Image Tree) which provides more flexibility. In
  247. particular it can handle selecting from multiple device tree
  248. and passing the correct one to U-Boot.
  249. config SYS_CLK_FREQ
  250. depends on ARC || ARCH_SUNXI
  251. int "CPU clock frequency"
  252. help
  253. TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
  254. endmenu # Boot images
  255. source "common/Kconfig"
  256. source "cmd/Kconfig"
  257. source "dts/Kconfig"
  258. source "net/Kconfig"
  259. source "drivers/Kconfig"
  260. source "fs/Kconfig"
  261. source "lib/Kconfig"
  262. source "test/Kconfig"