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))$(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.bz2
  53   TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
  54   ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE))$(call qstrip,$(CONFIG_KERNEL_GIT_CLONE_URI)),)
  55     ifeq ($(word 1,$(subst ., ,$(KERNEL_BASE))),3)
  56       LINUX_SITE:=@KERNEL/linux/kernel/v3.x$(TESTING)
  57     else
  58       LINUX_SITE:=@KERNEL/linux/kernel/v$(KERNEL)$(TESTING)
  59     endif
  60   endif
  61
  62   ifneq ($(TARGET_BUILD),1)
  63     PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
  64   endif
  65 endif
  66
  67 ifneq (,$(findstring uml,$(BOARD)))
  68   LINUX_KARCH=um
  69 else
  70   ifeq (,$(LINUX_KARCH))
  71     LINUX_KARCH=$(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))))))))))
  72   endif
  73 endif
  74
  75
  76 define KernelPackage/Defaults
  77   FILES:=
  78   AUTOLOAD:=
  79 endef
  80
  81 define ModuleAutoLoad
  82         $(SH_FUNC) \
  83         export modules=; \
  84         add_module() { \
  85                 priority="$$$$$$$$1"; \
  86                 mods="$$$$$$$$2"; \
  87                 boot="$$$$$$$$3"; \
  88                 shift 3; \
  89                 for mod in $$$$$$$$mods; do \
  90                         if [ -e $(2)/$(MODULES_SUBDIR)/$$$$$$$$mod.ko ]; then \
  91                                 mkdir -p $(2)/etc/modules.d; \
  92                                 echo "$$$$$$$$mod" >> $(2)/etc/modules.d/$$$$$$$$priority-$(1); \
  93                         fi; \
  94                 done; \
  95                 if [ -e $(2)/etc/modules.d/$$$$$$$$priority-$(1) ]; then \
  96                         if [ "$$$$$$$$boot" = "1" ]; then \
  97                                 mkdir -p $(2)/etc/modules-boot.d; \
  98                                 ln -s ../modules.d/$$$$$$$$priority-$(1) $(2)/etc/modules-boot.d/; \
  99                         fi; \
 100                         modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$priority-$(1)"; \
 101                 fi; \
 102         }; \
 103         $(3) \
 104         if [ -n "$$$$$$$$modules" ]; then \
 105                 mkdir -p $(2)/etc/modules.d; \
 106                 mkdir -p $(2)/CONTROL; \
 107                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
 108                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
 109                 echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
 110                 echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
 111                 chmod 0755 $(2)/CONTROL/postinst; \
 112         fi
 113 endef
 114
 115 ifeq ($(DUMP)$(TARGET_BUILD),)
 116   -include $(LINUX_DIR)/.config
 117 endif
 118
 119 define KernelPackage/depends
 120   $(STAMP_BUILT): $(LINUX_DIR)/.config
 121   define KernelPackage/depends
 122   endef
 123 endef
 124
 125 define KernelPackage
 126   NAME:=$(1)
 127   $(eval $(call Package/Default))
 128   $(eval $(call KernelPackage/Defaults))
 129   $(eval $(call KernelPackage/$(1)))
 130   $(eval $(call KernelPackage/$(1)/$(BOARD)))
 131
 132   define Package/kmod-$(1)
 133     TITLE:=$(TITLE)
 134     SECTION:=kernel
 135     CATEGORY:=Kernel modules
 136     DESCRIPTION:=$(DESCRIPTION)
 137     EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE)-$(LINUX_VERMAGIC))
 138     VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
 139     $(call KernelPackage/$(1))
 140     $(call KernelPackage/$(1)/$(BOARD))
 141   endef
 142
 143   ifdef KernelPackage/$(1)/description
 144     define Package/kmod-$(1)/description
 145 $(call KernelPackage/$(1)/description)
 146     endef
 147   endif
 148
 149   ifdef KernelPackage/$(1)/config
 150     define Package/kmod-$(1)/config
 151 $(call KernelPackage/$(1)/config)
 152     endef
 153   endif
 154
 155   $(call KernelPackage/depends)
 156
 157   ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m y,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
 158     ifneq ($(strip $(FILES)),)
 159       define Package/kmod-$(1)/install
 160                   @for mod in $$(FILES); do \
 161                         if [ -e $$$$$$$$mod ]; then \
 162                                 mkdir -p $$(1)/$(MODULES_SUBDIR) ; \
 163                                 $(CP) -L $$$$$$$$mod $$(1)/$(MODULES_SUBDIR)/ ; \
 164                         elif [ -e "$(LINUX_DIR)/modules.builtin" ]; then \
 165                                 if grep -q "$$$$$$$${mod##$(LINUX_DIR)/}" "$(LINUX_DIR)/modules.builtin"; then \
 166                                         echo "NOTICE: module '$$$$$$$$mod' is built-in."; \
 167                                 else \
 168                                         echo "ERROR: module '$$$$$$$$mod' is missing."; \
 169                                         exit 1; \
 170                                 fi; \
 171                         else \
 172                                 echo "WARNING: module '$$$$$$$$mod' missing and modules.builtin not available, assuming built-in."; \
 173                         fi; \
 174                   done;
 175                   $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
 176                   $(call KernelPackage/$(1)/install,$$(1))
 177       endef
 178     endif
 179   $(if $(CONFIG_PACKAGE_kmod-$(1)),
 180     else
 181       compile: kmod-$(1)-unavailable
 182       kmod-$(1)-unavailable:
 183                 @echo "WARNING: kmod-$(1) is not available in the kernel config"
 184   )
 185   endif
 186   $$(eval $$(call BuildPackage,kmod-$(1)))
 187
 188   $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
 189 endef
 190
 191 define AutoLoad
 192   add_module "$(1)" "$(2)" "$(3)";
 193 endef
 194
 195 version_field=$(if $(word $(1),$(2)),$(word $(1),$(2)),0)
 196 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)) ))
 197
 198 ifdef DUMP
 199   kernel_version_cmp=
 200 else
 201   kernel_version_cmp=$(shell [ $(call kernel_version_merge,$(call split_version,$(2))) $(1) $(call kernel_version_merge,$(call split_version,$(3))) ] && echo 1 )
 202 endif
 203
 204 CompareKernelPatchVer=$(if $(call kernel_version_cmp,-$(2),$(1),$(3)),1,0)
 205
 206 kernel_patchver_gt=$(call kernel_version_cmp,-gt,$(KERNEL_PATCHVER),$(1))
 207 kernel_patchver_ge=$(call kernel_version_cmp,-ge,$(KERNEL_PATCHVER),$(1))
 208 kernel_patchver_eq=$(call kernel_version_cmp,-eq,$(KERNEL_PATCHVER),$(1))
 209 kernel_patchver_le=$(call kernel_version_cmp,-le,$(KERNEL_PATCHVER),$(1))
 210 kernel_patchver_lt=$(call kernel_version_cmp,-lt,$(KERNEL_PATCHVER),$(1))
 211