Config.in 13 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435
  1. menu "Kernel"
  2. config BR2_LINUX_KERNEL
  3. bool "Linux Kernel"
  4. help
  5. Enable this option if you want to build a Linux kernel for
  6. your embedded device
  7. if BR2_LINUX_KERNEL
  8. comment "Linux kernel in thumb mode may be broken with binutils >= 2.29"
  9. depends on BR2_arm || BR2_armeb
  10. depends on !BR2_BINUTILS_VERSION_2_28_X
  11. # Packages that need to have a kernel with support for loadable modules,
  12. # but do not use the kernel-modules infrastructure, should select that
  13. # option.
  14. config BR2_LINUX_NEEDS_MODULES
  15. bool
  16. #
  17. # Version selection. We provide the choice between:
  18. #
  19. # 1. A single fairly recent stable kernel version
  20. # 2. A custom stable version
  21. # 3. A custom tarball
  22. # 4. A set of custom repository locations
  23. #
  24. choice
  25. prompt "Kernel version"
  26. config BR2_LINUX_KERNEL_LATEST_VERSION
  27. bool "Latest version (4.16)"
  28. config BR2_LINUX_KERNEL_LATEST_CIP_VERSION
  29. bool "Latest CIP SLTS version (v4.4.138-cip25)"
  30. help
  31. CIP launched in the spring of 2016 to address the needs of
  32. organizations in industries such as power generation and
  33. distribution, water, oil and gas, transportation, building
  34. automation and more for reliable and secure Linux-based
  35. embedded systems that can be sustained over a period of
  36. 10 to as many as 60 years.
  37. The project's goal is to provide an open source base layer
  38. of industrial-grade software that permits the use and
  39. implementation of software building blocks that meet
  40. these requirements.
  41. The CIP community plans to maintain 4.4 for security and
  42. bug fixes for more than 10 years.
  43. https://www.cip-project.org
  44. config BR2_LINUX_KERNEL_CUSTOM_VERSION
  45. bool "Custom version"
  46. help
  47. This option allows to use a specific official version from
  48. kernel.org, like 2.6.x, 2.6.x.y, 3.x.y, ...
  49. Note: you cannot use this option to select a _longterm_ 2.6
  50. kernel, because these kernels are not located at the standard
  51. URL at kernel.org. Instead, select "Custom tarball" and
  52. specify the right URL directly.
  53. config BR2_LINUX_KERNEL_CUSTOM_TARBALL
  54. bool "Custom tarball"
  55. help
  56. This option allows to specify a URL pointing to a kernel
  57. source tarball. This URL can use any protocol recognized by
  58. Buildroot, like http://, ftp://, file:// or scp://.
  59. When pointing to a local tarball using file://, you may want
  60. to use a make variable like $(TOPDIR) to reference the root of
  61. the Buildroot tree.
  62. config BR2_LINUX_KERNEL_CUSTOM_GIT
  63. bool "Custom Git repository"
  64. help
  65. This option allows Buildroot to get the Linux kernel source
  66. code from a Git repository.
  67. config BR2_LINUX_KERNEL_CUSTOM_HG
  68. bool "Custom Mercurial repository"
  69. help
  70. This option allows Buildroot to get the Linux kernel source
  71. code from a Mercurial repository.
  72. config BR2_LINUX_KERNEL_CUSTOM_SVN
  73. bool "Custom Subversion repository"
  74. help
  75. This option allows Buildroot to get the Linux kernel source
  76. code from a Subversion repository.
  77. endchoice
  78. config BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE
  79. string "Kernel version"
  80. depends on BR2_LINUX_KERNEL_CUSTOM_VERSION
  81. config BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION
  82. string "URL of custom kernel tarball"
  83. depends on BR2_LINUX_KERNEL_CUSTOM_TARBALL
  84. if BR2_LINUX_KERNEL_CUSTOM_GIT || BR2_LINUX_KERNEL_CUSTOM_HG || BR2_LINUX_KERNEL_CUSTOM_SVN
  85. config BR2_LINUX_KERNEL_CUSTOM_REPO_URL
  86. string "URL of custom repository"
  87. default BR2_LINUX_KERNEL_CUSTOM_GIT_REPO_URL \
  88. if BR2_LINUX_KERNEL_CUSTOM_GIT_REPO_URL != "" # legacy
  89. config BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION
  90. string "Custom repository version"
  91. default BR2_LINUX_KERNEL_CUSTOM_GIT_VERSION \
  92. if BR2_LINUX_KERNEL_CUSTOM_GIT_VERSION != "" # legacy
  93. help
  94. Revision to use in the typical format used by
  95. Git/Mercurial/Subversion E.G. a sha id, a tag, branch, ..
  96. endif
  97. config BR2_LINUX_KERNEL_VERSION
  98. string
  99. default "4.16.13" if BR2_LINUX_KERNEL_LATEST_VERSION
  100. default "v4.4.138-cip25" if BR2_LINUX_KERNEL_LATEST_CIP_VERSION
  101. default BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE \
  102. if BR2_LINUX_KERNEL_CUSTOM_VERSION
  103. default "custom" if BR2_LINUX_KERNEL_CUSTOM_TARBALL
  104. default BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION \
  105. if BR2_LINUX_KERNEL_CUSTOM_GIT || BR2_LINUX_KERNEL_CUSTOM_HG || BR2_LINUX_KERNEL_CUSTOM_SVN
  106. #
  107. # Patch selection
  108. #
  109. config BR2_LINUX_KERNEL_PATCH
  110. string "Custom kernel patches"
  111. help
  112. A space-separated list of patches to apply to the
  113. kernel. Each patch can be described as an URL, a local file
  114. path, or a directory. In the case of a directory, all files
  115. matching *.patch in the directory will be applied.
  116. #
  117. # Configuration selection
  118. #
  119. choice
  120. prompt "Kernel configuration"
  121. default BR2_LINUX_KERNEL_USE_DEFCONFIG
  122. config BR2_LINUX_KERNEL_USE_DEFCONFIG
  123. bool "Using an in-tree defconfig file"
  124. config BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG
  125. bool "Use the architecture default configuration"
  126. help
  127. This option will use the default configuration for the
  128. selected architecture. I.e, it is equivalent to running
  129. "make ARCH=<foo> defconfig". This is useful on architectures
  130. that have a single defconfig file, such as ARM64.
  131. config BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG
  132. bool "Using a custom (def)config file"
  133. endchoice
  134. config BR2_LINUX_KERNEL_DEFCONFIG
  135. string "Defconfig name"
  136. depends on BR2_LINUX_KERNEL_USE_DEFCONFIG
  137. help
  138. Name of the kernel defconfig file to use, without the
  139. trailing _defconfig. The defconfig is located in
  140. arch/<arch>/configs in the kernel tree.
  141. config BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE
  142. string "Configuration file path"
  143. depends on BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG
  144. help
  145. Path to the kernel configuration file
  146. Note: this can be a defconfig file or a complete .config file,
  147. which can later be saved back with make
  148. linux-update-(def)config.
  149. config BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES
  150. string "Additional configuration fragment files"
  151. help
  152. A space-separated list of kernel configuration fragment files,
  153. that will be merged to the main kernel configuration file.
  154. #
  155. # Binary format
  156. #
  157. choice
  158. prompt "Kernel binary format"
  159. default BR2_LINUX_KERNEL_ZIMAGE if BR2_arm || BR2_armeb
  160. config BR2_LINUX_KERNEL_UIMAGE
  161. bool "uImage"
  162. depends on BR2_arc || BR2_arm || BR2_armeb || \
  163. BR2_powerpc || BR2_powerpc64 || BR2_powerpc64le || \
  164. BR2_sh || BR2_mips || BR2_mipsel || \
  165. BR2_mips64 || BR2_mips64el || BR2_xtensa
  166. select BR2_PACKAGE_HOST_UBOOT_TOOLS
  167. config BR2_LINUX_KERNEL_APPENDED_UIMAGE
  168. bool "uImage with appended DT"
  169. depends on BR2_arm || BR2_armeb
  170. select BR2_LINUX_KERNEL_DTS_SUPPORT
  171. select BR2_LINUX_KERNEL_APPENDED_DTB
  172. select BR2_PACKAGE_HOST_UBOOT_TOOLS
  173. config BR2_LINUX_KERNEL_BZIMAGE
  174. bool "bzImage"
  175. depends on BR2_i386 || BR2_x86_64
  176. config BR2_LINUX_KERNEL_ZIMAGE
  177. bool "zImage"
  178. depends on BR2_arm || BR2_armeb || BR2_powerpc || \
  179. BR2_powerpc64 || BR2_powerpc64le || BR2_sparc || \
  180. BR2_sh || BR2_xtensa
  181. config BR2_LINUX_KERNEL_ZIMAGE_EPAPR
  182. bool "zImage.epapr"
  183. depends on BR2_powerpc64 || BR2_powerpc64le
  184. config BR2_LINUX_KERNEL_APPENDED_ZIMAGE
  185. bool "zImage with appended DT"
  186. depends on BR2_arm || BR2_armeb
  187. select BR2_LINUX_KERNEL_DTS_SUPPORT
  188. select BR2_LINUX_KERNEL_APPENDED_DTB
  189. config BR2_LINUX_KERNEL_CUIMAGE
  190. bool "cuImage"
  191. depends on BR2_powerpc
  192. select BR2_PACKAGE_HOST_UBOOT_TOOLS
  193. select BR2_LINUX_KERNEL_DTS_SUPPORT
  194. select BR2_LINUX_KERNEL_DTB_IS_SELF_BUILT
  195. config BR2_LINUX_KERNEL_SIMPLEIMAGE
  196. bool "simpleImage"
  197. depends on BR2_microblaze
  198. select BR2_PACKAGE_HOST_UBOOT_TOOLS
  199. select BR2_LINUX_KERNEL_DTS_SUPPORT
  200. select BR2_LINUX_KERNEL_DTB_IS_SELF_BUILT
  201. config BR2_LINUX_KERNEL_IMAGE
  202. bool "Image"
  203. depends on BR2_aarch64
  204. config BR2_LINUX_KERNEL_LINUX_BIN
  205. bool "linux.bin"
  206. depends on BR2_microblaze
  207. select BR2_PACKAGE_HOST_UBOOT_TOOLS
  208. config BR2_LINUX_KERNEL_VMLINUX_BIN
  209. bool "vmlinux.bin"
  210. depends on BR2_mips || BR2_mipsel || BR2_sh
  211. config BR2_LINUX_KERNEL_VMLINUX
  212. bool "vmlinux"
  213. config BR2_LINUX_KERNEL_VMLINUZ
  214. bool "vmlinuz"
  215. depends on BR2_mips || BR2_mipsel
  216. config BR2_LINUX_KERNEL_VMLINUZ_BIN
  217. bool "vmlinuz.bin"
  218. depends on BR2_mips || BR2_mipsel
  219. config BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM
  220. bool "custom target"
  221. help
  222. For certain cases a board-specific target image must be
  223. used. For example, on powerPC where the OpenFirmware
  224. description is attached in a board-specific kernel image
  225. target like 'cuImage.mpc8379_rdb'.
  226. Select this option and specify the make target in "Kernel
  227. image target name".
  228. endchoice
  229. #
  230. # Kernel compression format
  231. #
  232. choice
  233. prompt "Kernel compression format"
  234. help
  235. This selection will just ensure that the correct host tools
  236. are built. The actual compression for the kernel should be
  237. selected in the kernel configuration menu.
  238. config BR2_LINUX_KERNEL_GZIP
  239. bool "gzip compression"
  240. config BR2_LINUX_KERNEL_LZ4
  241. bool "lz4 compression"
  242. config BR2_LINUX_KERNEL_LZMA
  243. bool "lzma compression"
  244. config BR2_LINUX_KERNEL_LZO
  245. bool "lzo compression"
  246. config BR2_LINUX_KERNEL_XZ
  247. bool "xz compression"
  248. endchoice
  249. config BR2_LINUX_KERNEL_IMAGE_TARGET_NAME
  250. string "Kernel image target name"
  251. depends on BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM
  252. help
  253. Specify the kernel make target to build the kernel that you
  254. need.
  255. config BR2_LINUX_KERNEL_IMAGE_NAME
  256. string "Kernel image name"
  257. depends on BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM
  258. help
  259. The filename of the kernel image, if it is different from the
  260. make target (above). Only Xtensa uses a filename different
  261. from the make target. Defaults to
  262. BR2_LINUX_KERNEL_IMAGE_TARGET_NAME.
  263. If unsure, leave it empty.
  264. config BR2_LINUX_KERNEL_UIMAGE_LOADADDR
  265. string "load address (for 3.7+ multi-platform image)"
  266. depends on BR2_arm || BR2_armeb
  267. depends on BR2_LINUX_KERNEL_UIMAGE || BR2_LINUX_KERNEL_APPENDED_UIMAGE
  268. help
  269. If your ARM system's Linux kernel is configured with the new
  270. (3.7+) multi-architecture support (CONFIG_ARCH_MULTIPLATFORM=y
  271. in your kernel config), then it is necessary to specify a
  272. kernel load address when building the uImage. This should be a
  273. hexadecimal string beginning with 0x, for example: 0x00008000.
  274. If unsure, let this option empty.
  275. config BR2_LINUX_KERNEL_DTS_SUPPORT
  276. bool "Build a Device Tree Blob (DTB)"
  277. help
  278. Compile one or more device tree sources into device tree
  279. blobs.
  280. Select the dts files to compile in the options below.
  281. if BR2_LINUX_KERNEL_DTS_SUPPORT
  282. # We have mainly three cases when it comes to device tree support:
  283. # 1) We don't want any support at all. Then the ..DTS_SUPPORT
  284. # variable won't be set
  285. # 2) We want device tree support, so we need the user to enter the
  286. # device tree name or the path to the custom device he uses, but
  287. # the kernel abstracts this from us and only build an image that
  288. # looks like a regular kernel image. In this case, we only need
  289. # to derive the kernel image name from the given device tree
  290. # name, and all the rest is as usual
  291. # 3) We want device tree support, but the kernel requires us to
  292. # build the device tree blob separately. In this case, some
  293. # more logic will be needed.
  294. # The variable below address the second case, were you only want
  295. # limited actions from buildroot.
  296. config BR2_LINUX_KERNEL_DTB_IS_SELF_BUILT
  297. bool
  298. config BR2_LINUX_KERNEL_APPENDED_DTB
  299. bool
  300. config BR2_LINUX_KERNEL_INTREE_DTS_NAME
  301. string "In-tree Device Tree Source file names"
  302. help
  303. Name of in-tree device tree source file, without
  304. the trailing .dts. You can provide a list of
  305. dts files to build, separated by spaces.
  306. config BR2_LINUX_KERNEL_CUSTOM_DTS_PATH
  307. string "Out-of-tree Device Tree Source file paths"
  308. help
  309. Path to to out-of-tree device tree source files.
  310. You can provide a list of dts paths to copy and
  311. build, separated by spaces.
  312. endif
  313. config BR2_LINUX_KERNEL_INSTALL_TARGET
  314. bool "Install kernel image to /boot in target"
  315. depends on !BR2_TARGET_ROOTFS_INITRAMFS
  316. help
  317. Select this option to have the kernel image installed to
  318. /boot in the target root filesystem, as is typically done on
  319. x86/x86_64 systems.
  320. Note that this option also installs the Device Tree Blobs to
  321. /boot if DTBs have been generated by the kernel build
  322. process.
  323. config BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL
  324. bool "Needs host OpenSSL"
  325. help
  326. Some Linux kernel configuration options (such as
  327. CONFIG_SYSTEM_TRUSTED_KEYRING) require building a host
  328. program called extract-cert, which itself needs
  329. OpenSSL. Enabling this option will ensure host-openssl gets
  330. built before the Linux kernel.
  331. Enable this option if you get a Linux kernel build failure
  332. such as "scripts/extract-cert.c:21:25: fatal error:
  333. openssl/bio.h: No such file or directory".
  334. config BR2_LINUX_KERNEL_NEEDS_HOST_LIBELF
  335. bool "Needs host libelf"
  336. help
  337. Some Linux kernel configuration options (such as
  338. CONFIG_UNWINDER_ORC) require building a host program that
  339. needs libelf. Enabling this option will ensure host-elfutils
  340. (which provides libelf) gets built before the Linux kernel.
  341. Enable this option if you get a Linux kernel build failure
  342. such as "Cannot generate ORC metadata for
  343. CONFIG_UNWINDER_ORC=y, please install libelf-dev,
  344. libelf-devel or elfutils-libelf-devel".
  345. # Linux extensions
  346. source "linux/Config.ext.in"
  347. # Linux tools
  348. source "package/linux-tools/Config.in"
  349. endif # BR2_LINUX_KERNEL
  350. endmenu