include/kernel.mk

   1 #
   2 # Copyright (C) 2006-2011 OpenWrt.org
   3 #
   4 # This is free software, licensed under the GNU General Public License v2.
   5 # See /LICENSE for more information.
   6 #
   7
   8 ifeq ($(__target_inc),)
   9   include $(INCLUDE_DIR)/target.mk
  10 endif
  11
  12 ifeq ($(DUMP),1)
  13   KERNEL?=<KERNEL>
  14   BOARD?=<BOARD>
  15   LINUX_VERSION?=<LINUX_VERSION>
  16   LINUX_VERMAGIC?=<LINUX_VERMAGIC>
  17 else
  18   ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
  19     export GCC_HONOUR_COPTS=s
  20   endif
  21
  22   LINUX_KMOD_SUFFIX=ko
  23
  24   ifneq (,$(findstring uml,$(BOARD)))
  25     KERNEL_CC?=$(HOSTCC)
  26     KERNEL_CROSS?=
  27   else
  28     KERNEL_CC?=$(TARGET_CC)
  29     KERNEL_CROSS?=$(TARGET_CROSS)
  30   endif
  31
  32   ifeq ($(TARGET_BUILD),1)
  33     PATCH_DIR ?= ./patches$(if $(wildcard ./patches-$(KERNEL_PATCHVER)),-$(KERNEL_PATCHVER))
  34     FILES_DIR ?= $(foreach dir,$(wildcard ./files ./files-$(KERNEL_PATCHVER)),"$(dir)")
  35   endif
  36   KERNEL_BUILD_DIR ?= $(BUILD_DIR_BASE)/linux-$(BOARD)$(if $(SUBTARGET),_$(SUBTARGET))$(DIR_SUFFIX)$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
  37   LINUX_DIR ?= $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
  38
  39   LINUX_VERMAGIC:=$(strip $(shell cat $(LINUX_DIR)/.vermagic 2>/dev/null))
  40   LINUX_VERMAGIC:=$(if $(LINUX_VERMAGIC),$(LINUX_VERMAGIC),unknown)
  41
  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
  47   MODULES_SUBDIR:=lib/modules/$(LINUX_UNAME_VERSION)
  48   TARGET_MODULES_DIR := $(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
  49
  50   LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
  51
  52   LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.xz
  53   TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
  54   ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),)
  55       LINUX_SITE:=@KERNEL/linux/kernel/v3.x$(TESTING)
  56   endif
  57
  58   ifneq ($(TARGET_BUILD),1)
  59     PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
  60   endif
  61 endif
  62
  63 ifneq (,$(findstring uml,$(BOARD)))
  64   LINUX_KARCH=um
  65 else
  66   ifeq (,$(LINUX_KARCH))
  67     LINUX_KARCH=$(strip $(subst i386,x86,$(subst armeb,arm,$(subst mipsel,mips,$(subst mips64,mips,$(subst mips64el,mips,$(subst sh2,sh,$(subst sh3,sh,$(subst sh4,sh,$(ARCH))))))))))
  68   endif
  69 endif
  70
  71
  72 define KernelPackage/Defaults
  73   FILES:=
  74   AUTOLOAD:=
  75 endef
  76
  77 define ModuleAutoLoad
  78         $(SH_FUNC) \
  79         export modules=; \
  80         add_module() { \
  81                 priority="$$$$$$$$1"; \
  82                 mods="$$$$$$$$2"; \
  83                 boot="$$$$$$$$3"; \
  84                 shift 3; \
  85                 for mod in $$$$$$$$mods; do \
  86                         if [ -e $(2)/$(MODULES_SUBDIR)/$$$$$$$$mod.ko ]; then \
  87                                 mkdir -p $(2)/etc/modules.d; \
  88                                 echo "$$$$$$$$mod" >> $(2)/etc/modules.d/$$$$$$$$priority-$(1); \
  89                         fi; \
  90                 done; \
  91                 if [ -e $(2)/etc/modules.d/$$$$$$$$priority-$(1) ]; then \
  92                         if [ "$$$$$$$$boot" = "1" ]; then \
  93                                 mkdir -p $(2)/etc/modules-boot.d; \
  94                                 ln -s ../modules.d/$$$$$$$$priority-$(1) $(2)/etc/modules-boot.d/; \
  95                         fi; \
  96                         modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$priority-$(1)"; \
  97                 fi; \
  98         }; \
  99         $(3) \
 100         if [ -n "$$$$$$$$modules" ]; then \
 101                 mkdir -p $(2)/etc/modules.d; \
 102                 mkdir -p $(2)/CONTROL; \
 103                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
 104                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
 105                 echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
 106                 echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
 107                 chmod 0755 $(2)/CONTROL/postinst; \
 108         fi
 109 endef
 110
 111 ifeq ($(DUMP)$(TARGET_BUILD),)
 112   -include $(LINUX_DIR)/.config
 113 endif
 114
 115 define KernelPackage/depends
 116   $(STAMP_BUILT): $(LINUX_DIR)/.config
 117   define KernelPackage/depends
 118   endef
 119 endef
 120
 121 define KernelPackage
 122   NAME:=$(1)
 123   $(eval $(call Package/Default))
 124   $(eval $(call KernelPackage/Defaults))
 125   $(eval $(call KernelPackage/$(1)))
 126   $(eval $(call KernelPackage/$(1)/$(BOARD)))
 127
 128   define Package/kmod-$(1)
 129     TITLE:=$(TITLE)
 130     SECTION:=kernel
 131     CATEGORY:=Kernel modules
 132     DESCRIPTION:=$(DESCRIPTION)
 133     EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE)-$(LINUX_VERMAGIC))
 134     VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
 135     $(call KernelPackage/$(1))
 136     $(call KernelPackage/$(1)/$(BOARD))
 137   endef
 138
 139   ifdef KernelPackage/$(1)/description
 140     define Package/kmod-$(1)/description
 141 $(call KernelPackage/$(1)/description)
 142     endef
 143   endif
 144
 145   ifdef KernelPackage/$(1)/config
 146     define Package/kmod-$(1)/config
 147 $(call KernelPackage/$(1)/config)
 148     endef
 149   endif
 150
 151   $(call KernelPackage/depends)
 152
 153   ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m y,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
 154     ifneq ($(strip $(FILES)),)
 155       define Package/kmod-$(1)/install
 156                   @for mod in $$(FILES); do \
 157                         if [ -e $$$$$$$$mod ]; then \
 158                                 mkdir -p $$(1)/$(MODULES_SUBDIR) ; \
 159                                 $(CP) -L $$$$$$$$mod $$(1)/$(MODULES_SUBDIR)/ ; \
 160                         elif [ -e "$(LINUX_DIR)/modules.builtin" ]; then \
 161                                 if grep -q "$$$$$$$${mod##$(LINUX_DIR)/}" "$(LINUX_DIR)/modules.builtin"; then \
 162                                         echo "NOTICE: module '$$$$$$$$mod' is built-in."; \
 163                                 else \
 164                                         echo "ERROR: module '$$$$$$$$mod' is missing."; \
 165                                         exit 1; \
 166                                 fi; \
 167                         else \
 168                                 echo "WARNING: module '$$$$$$$$mod' missing and modules.builtin not available, assuming built-in."; \
 169                         fi; \
 170                   done;
 171                   $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
 172                   $(call KernelPackage/$(1)/install,$$(1))
 173       endef
 174     endif
 175   $(if $(CONFIG_PACKAGE_kmod-$(1)),
 176     else
 177       compile: kmod-$(1)-unavailable
 178       kmod-$(1)-unavailable:
 179                 @echo "WARNING: kmod-$(1) is not available in the kernel config"
 180   )
 181   endif
 182   $$(eval $$(call BuildPackage,kmod-$(1)))
 183
 184   $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
 185 endef
 186
 187 define AutoLoad
 188   add_module "$(1)" "$(2)" "$(3)";
 189 endef
 190
 191 version_field=$(if $(word $(1),$(2)),$(word $(1),$(2)),0)
 192 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)) ))
 193
 194 ifdef DUMP
 195   kernel_version_cmp=
 196 else
 197   kernel_version_cmp=$(shell [ $(call kernel_version_merge,$(call split_version,$(2))) $(1) $(call kernel_version_merge,$(call split_version,$(3))) ] && echo 1 )
 198 endif
 199
 200 CompareKernelPatchVer=$(if $(call kernel_version_cmp,-$(2),$(1),$(3)),1,0)
 201
 202 kernel_patchver_gt=$(call kernel_version_cmp,-gt,$(KERNEL_PATCHVER),$(1))
 203 kernel_patchver_ge=$(call kernel_version_cmp,-ge,$(KERNEL_PATCHVER),$(1))
 204 kernel_patchver_eq=$(call kernel_version_cmp,-eq,$(KERNEL_PATCHVER),$(1))
 205 kernel_patchver_le=$(call kernel_version_cmp,-le,$(KERNEL_PATCHVER),$(1))
 206 kernel_patchver_lt=$(call kernel_version_cmp,-lt,$(KERNEL_PATCHVER),$(1))
 207