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