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