include/kernel.mk

   1 #
   2 # Copyright (C) 2006 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 else
  17   export GCC_HONOUR_COPTS=s
  18
  19   ifeq ($(KERNEL),2.6)
  20     LINUX_KMOD_SUFFIX=ko
  21   else
  22     LINUX_KMOD_SUFFIX=o
  23   endif
  24
  25   ifneq (,$(findstring uml,$(BOARD)))
  26     KERNEL_CC?=$(HOSTCC)
  27     KERNEL_CROSS?=
  28   else
  29     KERNEL_CC?=$(TARGET_CC)
  30     KERNEL_CROSS?=$(TARGET_CROSS)
  31   endif
  32
  33   PATCH_DIR ?= ./patches$(if $(wildcard ./patches-$(KERNEL_PATCHVER)),-$(KERNEL_PATCHVER))
  34   FILES_DIR ?= $(foreach dir,$(wildcard ./files ./files-$(KERNEL_PATCHVER)),"$(dir)")
  35   KERNEL_BUILD_DIR ?= $(BUILD_DIR_BASE)/linux-$(BOARD)$(if $(SUBTARGET),_$(SUBTARGET))$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
  36   LINUX_DIR ?= $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
  37
  38   MODULES_SUBDIR:=lib/modules/$(LINUX_VERSION)
  39   TARGET_MODULES_DIR := $(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
  40
  41   LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
  42
  43   LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.bz2
  44   TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
  45   ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE)),)
  46     LINUX_SITE:=@KERNEL/linux/kernel/v$(KERNEL)$(TESTING)
  47   endif
  48
  49   ifneq ($(TARGET_BUILD),1)
  50     PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
  51   endif
  52 endif
  53
  54 ifneq (,$(findstring uml,$(BOARD)))
  55   LINUX_KARCH=um
  56 else
  57   ifeq (,$(LINUX_KARCH))
  58     LINUX_KARCH=$(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))))))))))
  59   endif
  60 endif
  61
  62
  63 define KernelPackage/Defaults
  64   FILES:=
  65   AUTOLOAD:=
  66 endef
  67
  68 define ModuleAutoLoad
  69         export modules=; \
  70         add_module() { \
  71                 mkdir -p $(2)/etc/modules.d; \
  72                 ( \
  73                         for mod in $$$$$$$$2; do \
  74                                 getvar mod; \
  75                         done \
  76                 ) > $(2)/etc/modules.d/$$$$$$$$1-$(1); \
  77                 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$1-$(1)"; \
  78         }; \
  79         $(3) \
  80         if [ -n "$$$$$$$$modules" ]; then \
  81                 mkdir -p $(2)/etc/modules.d; \
  82                 mkdir -p $(2)/CONTROL; \
  83                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
  84                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
  85                 echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
  86                 echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
  87                 chmod 0755 $(2)/CONTROL/postinst; \
  88         fi
  89 endef
  90
  91 ifeq ($(DUMP)$(TARGET_BUILD),)
  92   -include $(LINUX_DIR)/.config
  93 endif
  94
  95 define KernelPackage/depends
  96   $(STAMP_BUILT): $(LINUX_DIR)/.config
  97   define KernelPackage/depends
  98   endef
  99 endef
 100
 101 define KernelPackage
 102   NAME:=$(1)
 103   $(eval $(call Package/Default))
 104   $(eval $(call KernelPackage/Defaults))
 105   $(eval $(call KernelPackage/$(1)))
 106   $(eval $(call KernelPackage/$(1)/$(KERNEL)))
 107   $(eval $(call KernelPackage/$(1)/$(BOARD)))
 108
 109   define Package/kmod-$(1)
 110     TITLE:=$(TITLE)
 111     SECTION:=kernel
 112     CATEGORY:=Kernel modules
 113     DESCRIPTION:=$(DESCRIPTION)
 114     EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE))
 115     VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
 116     $(call KernelPackage/$(1))
 117     $(call KernelPackage/$(1)/$(KERNEL))
 118     $(call KernelPackage/$(1)/$(BOARD))
 119   endef
 120
 121   ifdef KernelPackage/$(1)/description
 122     define Package/kmod-$(1)/description
 123 $(call KernelPackage/$(1)/description)
 124     endef
 125   endif
 126
 127   ifdef KernelPackage/$(1)/config
 128     define Package/kmod-$(1)/config
 129 $(call KernelPackage/$(1)/config)
 130     endef
 131   endif
 132
 133   $(call KernelPackage/depends)
 134
 135   ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
 136     ifneq ($(strip $(FILES)),)
 137       define Package/kmod-$(1)/install
 138                   mkdir -p $$(1)/lib/modules/$(LINUX_VERSION)
 139                   $(CP) -L $$(FILES) $$(1)/lib/modules/$(LINUX_VERSION)/
 140                   $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
 141                   $(call KernelPackage/$(1)/install,$$(1))
 142       endef
 143     endif
 144   $(if $(CONFIG_PACKAGE_kmod-$(1)),
 145     else
 146       compile: kmod-$(1)-unavailable
 147       kmod-$(1)-unavailable:
 148                 @echo "WARNING: kmod-$(1) is not available in the kernel config"
 149   )
 150   endif
 151   $$(eval $$(call BuildPackage,kmod-$(1)))
 152
 153   $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
 154 endef
 155
 156 define AutoLoad
 157   add_module $(1) "$(2)";
 158 endef
 159
 160 ifdef DUMP
 161   CompareKernelPatchVer=0
 162 else
 163   define CompareKernelPatchVer
 164     $(shell [ $$(echo $(1) | tr . 0) -$(2) $$(echo $(3) | tr . 0) ] && echo 1 || echo 0)
 165   endef
 166 endif
 167