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$(shell [ -d "./patches-$(KERNEL_PATCHVER)" ] && printf -- "-$(KERNEL_PATCHVER)" || true )
  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 (,$(LINUX_KARCH))
  56     LINUX_KARCH:=$(shell echo $(ARCH) | sed -e 's/i[3-9]86/x86/' \
  57           -e 's/mipsel/mips/' \
  58           -e 's/mipseb/mips/' \
  59           -e 's/sh[234]/sh/' \
  60           -e 's/armeb/arm/' \
  61     )
  62   endif
  63 endif
  64
  65
  66 define KernelPackage/Defaults
  67   FILES:=
  68   AUTOLOAD:=
  69 endef
  70
  71 define ModuleAutoLoad
  72         export modules=; \
  73         add_module() { \
  74                 mkdir -p $(2)/etc/modules.d; \
  75                 ( \
  76                         for mod in $$$$$$$$2; do \
  77                                 getvar mod; \
  78                         done \
  79                 ) > $(2)/etc/modules.d/$$$$$$$$1-$(1); \
  80                 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$1-$(1)"; \
  81         }; \
  82         $(3) \
  83         if [ -n "$$$$$$$$modules" ]; then \
  84                 mkdir -p $(2)/etc/modules.d; \
  85                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
  86                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
  87                 echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
  88                 echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
  89                 chmod 0755 $(2)/CONTROL/postinst; \
  90         fi
  91 endef
  92
  93 ifeq ($(DUMP)$(TARGET_BUILD),)
  94   -include $(LINUX_DIR)/.config
  95 endif
  96
  97 define KernelPackage
  98   NAME:=$(1)
  99   $(eval $(call Package/Default))
 100   $(eval $(call KernelPackage/Defaults))
 101   $(eval $(call KernelPackage/$(1)))
 102   $(eval $(call KernelPackage/$(1)/$(KERNEL)))
 103   $(eval $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL)))
 104
 105   define Package/kmod-$(1)
 106     TITLE:=$(TITLE)
 107     SECTION:=kernel
 108     CATEGORY:=Kernel modules
 109     DESCRIPTION:=$(DESCRIPTION)
 110     EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE))
 111     VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(BOARD)-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
 112     $(call KernelPackage/$(1))
 113     $(call KernelPackage/$(1)/$(KERNEL))
 114     $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL))
 115   endef
 116
 117   ifdef KernelPackage/$(1)/description
 118     define Package/kmod-$(1)/description
 119 $(call KernelPackage/$(1)/description)
 120     endef
 121   endif
 122
 123   ifdef KernelPackage/$(1)/config
 124     define Package/kmod-$(1)/config
 125 $(call KernelPackage/$(1)/config)
 126     endef
 127   endif
 128
 129   $(STAMP_BUILT): $(LINUX_DIR)/.config
 130
 131   ifneq ($(if $(filter-out %=y %=n %=m,$(KCONFIG)),$(filter m,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
 132     ifneq ($(strip $(FILES)),)
 133       define Package/kmod-$(1)/install
 134                   mkdir -p $$(1)/lib/modules/$(LINUX_VERSION)
 135                   $(CP) -L $$(FILES) $$(1)/lib/modules/$(LINUX_VERSION)/
 136                   $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
 137                   $(call KernelPackage/$(1)/install,$$(1))
 138       endef
 139     endif
 140   $(if $(CONFIG_PACKAGE_kmod-$(1)),
 141     else
 142       compile: kmod-$(1)-unavailable
 143       kmod-$(1)-unavailable:
 144                 @echo "WARNING: kmod-$(1) is not available in the kernel config"
 145   )
 146   endif
 147   $$(eval $$(call BuildPackage,kmod-$(1)))
 148
 149   $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
 150 endef
 151
 152 define AutoLoad
 153   add_module $(1) "$(2)";
 154 endef
 155
 156 define CompareKernelPatchVer
 157   $(shell [ $$(echo $(1) | tr . 0) -$(2) $$(echo $(3) | tr . 0) ] && echo 1 || echo 0)
 158 endef
 159