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 ?= $(BUILD_DIR)/linux-$(BOARD)$(if $(SUBTARGET),_$(SUBTARGET))
  37   LINUX_DIR ?= $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
  38   ifeq ($(strip $(call CompareKernelPatchVer,$(KERNEL_PATCHVER),ge,3.7.0)),1)
  39     LINUX_UAPI_DIR=uapi/
  40   endif
  41   LINUX_VERMAGIC:=$(strip $(shell cat $(LINUX_DIR)/.vermagic 2>/dev/null))
  42   LINUX_VERMAGIC:=$(if $(LINUX_VERMAGIC),$(LINUX_VERMAGIC),unknown)
  43
  44   LINUX_UNAME_VERSION:=$(if $(word 3,$(subst ., ,$(KERNEL_BASE))),$(KERNEL_BASE),$(KERNEL_BASE).0)
  45   ifneq ($(findstring -rc,$(LINUX_VERSION)),)
  46     LINUX_UNAME_VERSION:=$(LINUX_UNAME_VERSION)-$(strip $(lastword $(subst -, ,$(LINUX_VERSION))))
  47   endif
  48
  49   MODULES_SUBDIR:=lib/modules/$(LINUX_UNAME_VERSION)
  50   TARGET_MODULES_DIR := $(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
  51
  52   LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
  53
  54   LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.xz
  55   TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
  56   ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),)
  57       LINUX_SITE:=@KERNEL/linux/kernel/v3.x$(TESTING)
  58   endif
  59
  60   ifneq ($(TARGET_BUILD),1)
  61     PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
  62   endif
  63 endif
  64
  65 ifneq (,$(findstring uml,$(BOARD)))
  66   LINUX_KARCH=um
  67 else
  68   ifeq (,$(LINUX_KARCH))
  69     LINUX_KARCH=$(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))))))))))
  70   endif
  71 endif
  72
  73
  74 define KernelPackage/Defaults
  75   FILES:=
  76   AUTOLOAD:=
  77 endef
  78
  79 define ModuleAutoLoad
  80         $(SH_FUNC) \
  81         export modules=; \
  82         add_module() { \
  83                 priority="$$$$$$$$1"; \
  84                 mods="$$$$$$$$2"; \
  85                 boot="$$$$$$$$3"; \
  86                 shift 3; \
  87                 for mod in $$$$$$$$mods; do \
  88                         if [ -e $(2)/$(MODULES_SUBDIR)/$$$$$$$$mod.ko ]; then \
  89                                 mkdir -p $(2)/etc/modules.d; \
  90                                 echo "$$$$$$$$mod" >> $(2)/etc/modules.d/$$$$$$$$priority-$(1); \
  91                         fi; \
  92                 done; \
  93                 if [ -e $(2)/etc/modules.d/$$$$$$$$priority-$(1) ]; then \
  94                         if [ "$$$$$$$$boot" = "1" ]; then \
  95                                 mkdir -p $(2)/etc/modules-boot.d; \
  96                                 ln -s ../modules.d/$$$$$$$$priority-$(1) $(2)/etc/modules-boot.d/; \
  97                         fi; \
  98                         modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$priority-$(1)"; \
  99                 fi; \
 100         }; \
 101         $(3) \
 102         if [ -n "$$$$$$$$modules" ]; then \
 103                 mkdir -p $(2)/etc/modules.d; \
 104                 mkdir -p $(2)/CONTROL; \
 105                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
 106                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
 107                 echo ". /lib/functions.sh" >> $(2)/CONTROL/postinst; \
 108                 echo "insert_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
 109                 chmod 0755 $(2)/CONTROL/postinst; \
 110         fi
 111 endef
 112
 113 ifeq ($(DUMP)$(TARGET_BUILD),)
 114   -include $(LINUX_DIR)/.config
 115 endif
 116
 117 define KernelPackage/depends
 118   $(STAMP_BUILT): $(LINUX_DIR)/.config
 119   define KernelPackage/depends
 120   endef
 121 endef
 122
 123 define KernelPackage
 124   NAME:=$(1)
 125   $(eval $(call Package/Default))
 126   $(eval $(call KernelPackage/Defaults))
 127   $(eval $(call KernelPackage/$(1)))
 128   $(eval $(call KernelPackage/$(1)/$(BOARD)))
 129
 130   define Package/kmod-$(1)
 131     TITLE:=$(TITLE)
 132     SECTION:=kernel
 133     CATEGORY:=Kernel modules
 134     DESCRIPTION:=$(DESCRIPTION)
 135     EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE)-$(LINUX_VERMAGIC))
 136     VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
 137     $(call KernelPackage/$(1))
 138     $(call KernelPackage/$(1)/$(BOARD))
 139   endef
 140
 141   ifdef KernelPackage/$(1)/description
 142     define Package/kmod-$(1)/description
 143 $(call KernelPackage/$(1)/description)
 144     endef
 145   endif
 146
 147   ifdef KernelPackage/$(1)/config
 148     define Package/kmod-$(1)/config
 149 $(call KernelPackage/$(1)/config)
 150     endef
 151   endif
 152
 153   $(call KernelPackage/depends)
 154
 155   ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m y,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
 156     ifneq ($(strip $(FILES)),)
 157       define Package/kmod-$(1)/install
 158                   @for mod in $$(FILES); do \
 159                         if [ -e $$$$$$$$mod ]; then \
 160                                 mkdir -p $$(1)/$(MODULES_SUBDIR) ; \
 161                                 $(CP) -L $$$$$$$$mod $$(1)/$(MODULES_SUBDIR)/ ; \
 162                         elif [ -e "$(LINUX_DIR)/modules.builtin" ]; then \
 163                                 if grep -q "$$$$$$$${mod##$(LINUX_DIR)/}" "$(LINUX_DIR)/modules.builtin"; then \
 164                                         echo "NOTICE: module '$$$$$$$$mod' is built-in."; \
 165                                 else \
 166                                         echo "ERROR: module '$$$$$$$$mod' is missing." >&2; \
 167                                         exit 1; \
 168                                 fi; \
 169                         else \
 170                                 echo "WARNING: module '$$$$$$$$mod' missing and modules.builtin not available, assuming built-in." >&2; \
 171                         fi; \
 172                   done;
 173                   $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
 174                   $(call KernelPackage/$(1)/install,$$(1))
 175       endef
 176     endif
 177   $(if $(CONFIG_PACKAGE_kmod-$(1)),
 178     else
 179       compile: kmod-$(1)-unavailable
 180       kmod-$(1)-unavailable:
 181                 @echo "WARNING: kmod-$(1) is not available in the kernel config" >&2
 182   )
 183   endif
 184   $$(eval $$(call BuildPackage,kmod-$(1)))
 185
 186   $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
 187 endef
 188
 189 define AutoLoad
 190   add_module "$(1)" "$(2)" "$(3)";
 191 endef
 192
 193 version_field=$(if $(word $(1),$(2)),$(word $(1),$(2)),0)
 194 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)) ))
 195
 196 ifdef DUMP
 197   kernel_version_cmp=
 198 else
 199   kernel_version_cmp=$(shell [ $(call kernel_version_merge,$(call split_version,$(2))) $(1) $(call kernel_version_merge,$(call split_version,$(3))) ] && echo 1 )
 200 endif
 201
 202 CompareKernelPatchVer=$(if $(call kernel_version_cmp,-$(2),$(1),$(3)),1,0)
 203
 204 kernel_patchver_gt=$(call kernel_version_cmp,-gt,$(KERNEL_PATCHVER),$(1))
 205 kernel_patchver_ge=$(call kernel_version_cmp,-ge,$(KERNEL_PATCHVER),$(1))
 206 kernel_patchver_eq=$(call kernel_version_cmp,-eq,$(KERNEL_PATCHVER),$(1))
 207 kernel_patchver_le=$(call kernel_version_cmp,-le,$(KERNEL_PATCHVER),$(1))
 208 kernel_patchver_lt=$(call kernel_version_cmp,-lt,$(KERNEL_PATCHVER),$(1))
 209