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   ifeq ($(TARGET_BUILD),1)
  34     PATCH_DIR ?= ./patches$(if $(wildcard ./patches-$(KERNEL_PATCHVER)),-$(KERNEL_PATCHVER))
  35     FILES_DIR ?= $(foreach dir,$(wildcard ./files ./files-$(KERNEL_PATCHVER)),"$(dir)")
  36   endif
  37   KERNEL_BUILD_DIR ?= $(BUILD_DIR_BASE)/linux-$(BOARD)$(if $(SUBTARGET),_$(SUBTARGET))$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
  38   LINUX_DIR ?= $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
  39
  40   MODULES_SUBDIR:=lib/modules/$(LINUX_VERSION)
  41   TARGET_MODULES_DIR := $(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
  42
  43   LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
  44
  45   LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.bz2
  46   TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
  47   ifeq ($(call qstrip,$(CONFIG_EXTERNAL_KERNEL_TREE)),)
  48     LINUX_SITE:=@KERNEL/linux/kernel/v$(KERNEL)$(TESTING)
  49   endif
  50
  51   ifneq ($(TARGET_BUILD),1)
  52     PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
  53   endif
  54 endif
  55
  56 ifneq (,$(findstring uml,$(BOARD)))
  57   LINUX_KARCH=um
  58 else
  59   ifeq (,$(LINUX_KARCH))
  60     LINUX_KARCH=$(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))))))))))
  61   endif
  62 endif
  63
  64
  65 define KernelPackage/Defaults
  66   FILES:=
  67   AUTOLOAD:=
  68 endef
  69
  70 define ModuleAutoLoad
  71         export modules=; \
  72         add_module() { \
  73                 mkdir -p $(2)/etc/modules.d; \
  74                 ( \
  75                         [ "$$$$$$$$3" = "1" ] && { \
  76                                 echo '# May be required for rootfs' ; \
  77                         } ; \
  78                         for mod in $$$$$$$$2; do \
  79                                 getvar mod; \
  80                         done \
  81                 ) > $(2)/etc/modules.d/$$$$$$$$1-$(1); \
  82                 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$1-$(1)"; \
  83         }; \
  84         $(3) \
  85         if [ -n "$$$$$$$$modules" ]; then \
  86                 mkdir -p $(2)/etc/modules.d; \
  87                 mkdir -p $(2)/CONTROL; \
  88                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
  89                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
  90                 echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
  91                 echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
  92                 chmod 0755 $(2)/CONTROL/postinst; \
  93         fi
  94 endef
  95
  96 ifeq ($(DUMP)$(TARGET_BUILD),)
  97   -include $(LINUX_DIR)/.config
  98 endif
  99
 100 define KernelPackage/depends
 101   $(STAMP_BUILT): $(LINUX_DIR)/.config
 102   define KernelPackage/depends
 103   endef
 104 endef
 105
 106 define KernelPackage
 107   NAME:=$(1)
 108   $(eval $(call Package/Default))
 109   $(eval $(call KernelPackage/Defaults))
 110   $(eval $(call KernelPackage/$(1)))
 111   $(eval $(call KernelPackage/$(1)/$(KERNEL)))
 112   $(eval $(call KernelPackage/$(1)/$(BOARD)))
 113
 114   define Package/kmod-$(1)
 115     TITLE:=$(TITLE)
 116     SECTION:=kernel
 117     CATEGORY:=Kernel modules
 118     DESCRIPTION:=$(DESCRIPTION)
 119     EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE))
 120     VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
 121     $(call KernelPackage/$(1))
 122     $(call KernelPackage/$(1)/$(KERNEL))
 123     $(call KernelPackage/$(1)/$(BOARD))
 124   endef
 125
 126   ifdef KernelPackage/$(1)/description
 127     define Package/kmod-$(1)/description
 128 $(call KernelPackage/$(1)/description)
 129     endef
 130   endif
 131
 132   ifdef KernelPackage/$(1)/config
 133     define Package/kmod-$(1)/config
 134 $(call KernelPackage/$(1)/config)
 135     endef
 136   endif
 137
 138   $(call KernelPackage/depends)
 139
 140   ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
 141     ifneq ($(strip $(FILES)),)
 142       define Package/kmod-$(1)/install
 143                   mkdir -p $$(1)/lib/modules/$(LINUX_VERSION)
 144                   $(CP) -L $$(FILES) $$(1)/lib/modules/$(LINUX_VERSION)/
 145                   $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
 146                   $(call KernelPackage/$(1)/install,$$(1))
 147       endef
 148     endif
 149   $(if $(CONFIG_PACKAGE_kmod-$(1)),
 150     else
 151       compile: kmod-$(1)-unavailable
 152       kmod-$(1)-unavailable:
 153                 @echo "WARNING: kmod-$(1) is not available in the kernel config"
 154   )
 155   endif
 156   $$(eval $$(call BuildPackage,kmod-$(1)))
 157
 158   $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
 159 endef
 160
 161 define AutoLoad
 162   add_module $(1) "$(2)" $(3);
 163 endef
 164
 165 ifdef DUMP
 166   CompareKernelPatchVer=0
 167 else
 168   define CompareKernelPatchVer
 169     $(shell [ $$(echo $(1) | tr . 0) -$(2) $$(echo $(3) | tr . 0) ] && echo 1 || echo 0)
 170   endef
 171 endif
 172