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kernel.mk 7.7 KB

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  1. #
  2. # Copyright (C) 2006-2015 OpenWrt.org
  3. #
  4. # This is free software, licensed under the GNU General Public License v2.
  5. # See /LICENSE for more information.
  6. #
  7. ifneq ($(filter check,$(MAKECMDGOALS)),)
  8. CHECK:=1
  9. DUMP:=1
  10. endif
  11. ifeq ($(__target_inc),)
  12. ifndef CHECK
  13. include $(INCLUDE_DIR)/target.mk
  14. endif
  15. endif
  16. ifeq ($(DUMP),1)
  17. KERNEL?=<KERNEL>
  18. BOARD?=<BOARD>
  19. LINUX_VERSION?=<LINUX_VERSION>
  20. LINUX_VERMAGIC?=<LINUX_VERMAGIC>
  21. else
  22. ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
  23. export GCC_HONOUR_COPTS=s
  24. endif
  25. LINUX_KMOD_SUFFIX=ko
  26. ifneq (,$(findstring uml,$(BOARD)))
  27. KERNEL_CC?=$(HOSTCC)
  28. KERNEL_CROSS?=
  29. else
  30. KERNEL_CC?=$(TARGET_CC)
  31. KERNEL_CROSS?=$(TARGET_CROSS)
  32. endif
  33. ifeq ($(TARGET_BUILD),1)
  34. PATCH_DIR ?= $(CURDIR)/patches$(if $(wildcard ./patches-$(KERNEL_PATCHVER)),-$(KERNEL_PATCHVER))
  35. FILES_DIR ?= $(foreach dir,$(wildcard $(CURDIR)/files $(CURDIR)/files-$(KERNEL_PATCHVER)),"$(dir)")
  36. endif
  37. KERNEL_BUILD_DIR ?= $(BUILD_DIR)/linux-$(BOARD)$(if $(SUBTARGET),_$(SUBTARGET))
  38. LINUX_DIR ?= $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
  39. LINUX_UAPI_DIR=uapi/
  40. LINUX_VERMAGIC:=$(strip $(shell cat $(LINUX_DIR)/.vermagic 2>/dev/null))
  41. LINUX_VERMAGIC:=$(if $(LINUX_VERMAGIC),$(LINUX_VERMAGIC),unknown)
  42. LINUX_UNAME_VERSION:=$(if $(word 3,$(subst ., ,$(KERNEL_BASE))),$(KERNEL_BASE),$(KERNEL_BASE).0)
  43. ifneq ($(findstring -rc,$(LINUX_VERSION)),)
  44. LINUX_UNAME_VERSION:=$(LINUX_UNAME_VERSION)-$(strip $(lastword $(subst -, ,$(LINUX_VERSION))))
  45. endif
  46. MODULES_SUBDIR:=lib/modules/$(LINUX_UNAME_VERSION)-gnu
  47. TARGET_MODULES_DIR := $(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
  48. LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
  49. LINUX_SOURCE:=linux-libre-$(LINUX_VERSION)-gnu.tar.xz
  50. TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
  51. ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),)
  52. LINUX_SITE:=@KERNEL_LIBRE/$(LINUX_VERSION)-gnu$(TESTING)
  53. endif
  54. ifneq ($(TARGET_BUILD),1)
  55. PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
  56. endif
  57. endif
  58. ifneq (,$(findstring uml,$(BOARD)))
  59. LINUX_KARCH=um
  60. else ifneq (,$(findstring $(ARCH) , aarch64 aarch64_be ))
  61. LINUX_KARCH := arm64
  62. else ifneq (,$(findstring $(ARCH) , arceb ))
  63. LINUX_KARCH := arc
  64. else ifneq (,$(findstring $(ARCH) , armeb ))
  65. LINUX_KARCH := arm
  66. else ifneq (,$(findstring $(ARCH) , mipsel mips64 mips64el ))
  67. LINUX_KARCH := mips
  68. else ifneq (,$(findstring $(ARCH) , sh2 sh3 sh4 ))
  69. LINUX_KARCH := sh
  70. else ifneq (,$(findstring $(ARCH) , i386 x86_64 ))
  71. LINUX_KARCH := x86
  72. else
  73. LINUX_KARCH := $(ARCH)
  74. endif
  75. define KernelPackage/Defaults
  76. FILES:=
  77. AUTOLOAD:=
  78. PKGFLAGS+=nonshared
  79. endef
  80. define ModuleAutoLoad
  81. $(SH_FUNC) \
  82. export modules=; \
  83. probe_module() { \
  84. mods="$$$$$$$$1"; \
  85. boot="$$$$$$$$2"; \
  86. shift 2; \
  87. for mod in $(sort $$$$$$$$mods); do \
  88. mkdir -p $(2)/etc/modules.d; \
  89. echo "$$$$$$$$mod" >> $(2)/etc/modules.d/$(1); \
  90. done; \
  91. if [ -e $(2)/etc/modules.d/$(1) ]; then \
  92. if [ "$$$$$$$$boot" = "1" ]; then \
  93. mkdir -p $(2)/etc/modules-boot.d; \
  94. ln -s ../modules.d/$(1) $(2)/etc/modules-boot.d/; \
  95. fi; \
  96. modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$mods"; \
  97. fi; \
  98. }; \
  99. add_module() { \
  100. priority="$$$$$$$$1"; \
  101. mods="$$$$$$$$2"; \
  102. boot="$$$$$$$$3"; \
  103. shift 3; \
  104. for mod in $(sort $$$$$$$$mods); do \
  105. mkdir -p $(2)/etc/modules.d; \
  106. echo "$$$$$$$$mod" >> $(2)/etc/modules.d/$$$$$$$$priority-$(1); \
  107. done; \
  108. if [ -e $(2)/etc/modules.d/$$$$$$$$priority-$(1) ]; then \
  109. if [ "$$$$$$$$boot" = "1" ]; then \
  110. mkdir -p $(2)/etc/modules-boot.d; \
  111. ln -s ../modules.d/$$$$$$$$priority-$(1) $(2)/etc/modules-boot.d/; \
  112. fi; \
  113. modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$priority-$(1)"; \
  114. fi; \
  115. }; \
  116. $(3) \
  117. if [ -n "$$$$$$$$modules" ]; then \
  118. mkdir -p $(2)/etc/modules.d; \
  119. mkdir -p $(2)/CONTROL; \
  120. echo "#!/bin/sh" > $(2)/CONTROL/postinst-pkg; \
  121. echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst-pkg; \
  122. echo ". /lib/functions.sh" >> $(2)/CONTROL/postinst-pkg; \
  123. echo "insert_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst-pkg; \
  124. chmod 0755 $(2)/CONTROL/postinst-pkg; \
  125. fi
  126. endef
  127. ifeq ($(DUMP)$(TARGET_BUILD),)
  128. -include $(LINUX_DIR)/.config
  129. endif
  130. define KernelPackage/depends
  131. $(STAMP_BUILT): $(LINUX_DIR)/.config
  132. define KernelPackage/depends
  133. endef
  134. endef
  135. define KernelPackage
  136. NAME:=$(1)
  137. $(eval $(call Package/Default))
  138. $(eval $(call KernelPackage/Defaults))
  139. $(eval $(call KernelPackage/$(1)))
  140. $(eval $(call KernelPackage/$(1)/$(BOARD)))
  141. $(eval $(call KernelPackage/$(1)/$(BOARD)/$(if $(SUBTARGET),$(SUBTARGET),generic)))
  142. define Package/kmod-$(1)
  143. TITLE:=$(TITLE)
  144. SECTION:=kernel
  145. CATEGORY:=Kernel modules
  146. DESCRIPTION:=$(DESCRIPTION)
  147. EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE)-$(LINUX_VERMAGIC))
  148. VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
  149. PKGFLAGS:=$(PKGFLAGS)
  150. $(call KernelPackage/$(1))
  151. $(call KernelPackage/$(1)/$(BOARD))
  152. $(call KernelPackage/$(1)/$(BOARD)/$(if $(SUBTARGET),$(SUBTARGET),generic))
  153. endef
  154. ifdef KernelPackage/$(1)/conffiles
  155. define Package/kmod-$(1)/conffiles
  156. $(call KernelPackage/$(1)/conffiles)
  157. endef
  158. endif
  159. ifdef KernelPackage/$(1)/description
  160. define Package/kmod-$(1)/description
  161. $(call KernelPackage/$(1)/description)
  162. endef
  163. endif
  164. ifdef KernelPackage/$(1)/config
  165. define Package/kmod-$(1)/config
  166. $(call KernelPackage/$(1)/config)
  167. endef
  168. endif
  169. $(call KernelPackage/depends)
  170. ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m y,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
  171. ifneq ($(strip $(FILES)),)
  172. define Package/kmod-$(1)/install
  173. @for mod in $$(call version_filter,$$(FILES)); do \
  174. if grep -q "$$$$$$$${mod##$(LINUX_DIR)/}" "$(LINUX_DIR)/modules.builtin"; then \
  175. echo "NOTICE: module '$$$$$$$$mod' is built-in."; \
  176. elif [ -e $$$$$$$$mod ]; then \
  177. mkdir -p $$(1)/$(MODULES_SUBDIR) ; \
  178. $(CP) -L $$$$$$$$mod $$(1)/$(MODULES_SUBDIR)/ ; \
  179. else \
  180. echo "ERROR: module '$$$$$$$$mod' is missing." >&2; \
  181. exit 1; \
  182. fi; \
  183. done;
  184. $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
  185. $(call KernelPackage/$(1)/install,$$(1))
  186. endef
  187. endif
  188. $(if $(CONFIG_PACKAGE_kmod-$(1)),
  189. else
  190. compile: $(1)-disabled
  191. $(1)-disabled:
  192. @echo "WARNING: kmod-$(1) is not available in the kernel config - generating empty package" >&2
  193. define Package/kmod-$(1)/install
  194. true
  195. endef
  196. )
  197. endif
  198. $$(eval $$(call BuildPackage,kmod-$(1)))
  199. $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
  200. endef
  201. version_filter=$(if $(findstring @,$(1)),$(shell $(SCRIPT_DIR)/package-metadata.pl version_filter $(KERNEL_PATCHVER) $(1)),$(1))
  202. define AutoLoad
  203. add_module "$(1)" "$(call version_filter,$(2))" "$(3)";
  204. endef
  205. define AutoProbe
  206. probe_module "$(call version_filter,$(1))" "$(2)";
  207. endef
  208. version_field=$(if $(word $(1),$(2)),$(word $(1),$(2)),0)
  209. kernel_version_merge=$$(( ($(call version_field,1,$(1)) << 24) + ($(call version_field,2,$(1)) << 16) + ($(call version_field,3,$(1)) << 8) + $(call version_field,4,$(1)) ))
  210. ifdef DUMP
  211. kernel_version_cmp=
  212. else
  213. kernel_version_cmp=$(shell [ $(call kernel_version_merge,$(call split_version,$(2))) $(1) $(call kernel_version_merge,$(call split_version,$(3))) ] && echo 1 )
  214. endif
  215. CompareKernelPatchVer=$(if $(call kernel_version_cmp,-$(2),$(1),$(3)),1,0)
  216. kernel_patchver_gt=$(call kernel_version_cmp,-gt,$(KERNEL_PATCHVER),$(1))
  217. kernel_patchver_ge=$(call kernel_version_cmp,-ge,$(KERNEL_PATCHVER),$(1))
  218. kernel_patchver_eq=$(call kernel_version_cmp,-eq,$(KERNEL_PATCHVER),$(1))
  219. kernel_patchver_le=$(call kernel_version_cmp,-le,$(KERNEL_PATCHVER),$(1))
  220. kernel_patchver_lt=$(call kernel_version_cmp,-lt,$(KERNEL_PATCHVER),$(1))