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                         [ "$$$$$$$$3" = "1" ] && { \
  74                                 echo '# May be required for rootfs' ; \
  75                         } ; \
  76                         for mod in $$$$$$$$2; do \
  77                                 getvar mod; \
  78                         done \
  79                 ) > $(2)/etc/modules.d/$$$$$$$$1-$(1); \
  80                 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$1-$(1)"; \
  81         }; \
  82         $(3) \
  83         if [ -n "$$$$$$$$modules" ]; then \
  84                 mkdir -p $(2)/etc/modules.d; \
  85                 mkdir -p $(2)/CONTROL; \
  86                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
  87                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
  88                 echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
  89                 echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
  90                 chmod 0755 $(2)/CONTROL/postinst; \
  91         fi
  92 endef
  93
  94 ifeq ($(DUMP)$(TARGET_BUILD),)
  95   -include $(LINUX_DIR)/.config
  96 endif
  97
  98 define KernelPackage/depends
  99   $(STAMP_BUILT): $(LINUX_DIR)/.config
 100   define KernelPackage/depends
 101   endef
 102 endef
 103
 104 define KernelPackage
 105   NAME:=$(1)
 106   $(eval $(call Package/Default))
 107   $(eval $(call KernelPackage/Defaults))
 108   $(eval $(call KernelPackage/$(1)))
 109   $(eval $(call KernelPackage/$(1)/$(KERNEL)))
 110   $(eval $(call KernelPackage/$(1)/$(BOARD)))
 111
 112   define Package/kmod-$(1)
 113     TITLE:=$(TITLE)
 114     SECTION:=kernel
 115     CATEGORY:=Kernel modules
 116     DESCRIPTION:=$(DESCRIPTION)
 117     EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(LINUX_RELEASE))
 118     VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
 119     $(call KernelPackage/$(1))
 120     $(call KernelPackage/$(1)/$(KERNEL))
 121     $(call KernelPackage/$(1)/$(BOARD))
 122   endef
 123
 124   ifdef KernelPackage/$(1)/description
 125     define Package/kmod-$(1)/description
 126 $(call KernelPackage/$(1)/description)
 127     endef
 128   endif
 129
 130   ifdef KernelPackage/$(1)/config
 131     define Package/kmod-$(1)/config
 132 $(call KernelPackage/$(1)/config)
 133     endef
 134   endif
 135
 136   $(call KernelPackage/depends)
 137
 138   ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
 139     ifneq ($(strip $(FILES)),)
 140       define Package/kmod-$(1)/install
 141                   mkdir -p $$(1)/lib/modules/$(LINUX_VERSION)
 142                   $(CP) -L $$(FILES) $$(1)/lib/modules/$(LINUX_VERSION)/
 143                   $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
 144                   $(call KernelPackage/$(1)/install,$$(1))
 145       endef
 146     endif
 147   $(if $(CONFIG_PACKAGE_kmod-$(1)),
 148     else
 149       compile: kmod-$(1)-unavailable
 150       kmod-$(1)-unavailable:
 151                 @echo "WARNING: kmod-$(1) is not available in the kernel config"
 152   )
 153   endif
 154   $$(eval $$(call BuildPackage,kmod-$(1)))
 155
 156   $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
 157 endef
 158
 159 define AutoLoad
 160   add_module $(1) "$(2)" $(3);
 161 endef
 162
 163 ifdef DUMP
 164   CompareKernelPatchVer=0
 165 else
 166   define CompareKernelPatchVer
 167     $(shell [ $$(echo $(1) | tr . 0) -$(2) $$(echo $(3) | tr . 0) ] && echo 1 || echo 0)
 168   endef
 169 endif
 170