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   KERNEL_BUILD_DIR ?= $(BUILD_DIR_BASE)/linux-$(BOARD)$(if $(SUBTARGET),_$(SUBTARGET))$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
  35   LINUX_DIR ?= $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
  36
  37   MODULES_SUBDIR:=lib/modules/$(LINUX_VERSION)
  38   TARGET_MODULES_DIR := $(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
  39
  40   LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
  41
  42   LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.bz2
  43   TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
  44   LINUX_SITE:=@KERNEL/linux/kernel/v$(KERNEL)$(TESTING) \
  45
  46   ifneq ($(TARGET_BUILD),1)
  47     PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
  48   endif
  49 endif
  50
  51 ifneq (,$(findstring uml,$(BOARD)))
  52   LINUX_KARCH:=um
  53 else
  54   ifeq (,$(LINUX_KARCH))
  55     LINUX_KARCH:=$(shell echo $(ARCH) | sed -e 's/i[3-9]86/i386/' \
  56           -e 's/mipsel/mips/' \
  57           -e 's/mipseb/mips/' \
  58           -e 's/sh[234]/sh/' \
  59           -e 's/armeb/arm/' \
  60     )
  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                         for mod in $$$$$$$$2; do \
  76                                 getvar mod; \
  77                         done \
  78                 ) > $(2)/etc/modules.d/$$$$$$$$1-$(1); \
  79                 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$1-$(1)"; \
  80         }; \
  81         $(3) \
  82         if [ -n "$$$$$$$$modules" ]; then \
  83                 mkdir -p $(2)/etc/modules.d; \
  84                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
  85                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
  86                 echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
  87                 echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
  88                 chmod 0755 $(2)/CONTROL/postinst; \
  89         fi
  90 endef
  91
  92 ifeq ($(DUMP),)
  93   -include $(LINUX_DIR)/.config
  94 endif
  95
  96 define KernelPackage
  97   NAME:=$(1)
  98   $(eval $(call Package/Default))
  99   $(eval $(call KernelPackage/Defaults))
 100   $(eval $(call KernelPackage/$(1)))
 101   $(eval $(call KernelPackage/$(1)/$(KERNEL)))
 102   $(eval $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL)))
 103
 104   define Package/kmod-$(1)
 105     TITLE:=$(TITLE)
 106     SECTION:=kernel
 107     CATEGORY:=Kernel modules
 108     DESCRIPTION:=$(DESCRIPTION)
 109     EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE))
 110     VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(BOARD)-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
 111     $(call KernelPackage/$(1))
 112     $(call KernelPackage/$(1)/$(KERNEL))
 113     $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL))
 114   endef
 115
 116   ifdef KernelPackage/$(1)/description
 117     define Package/kmod-$(1)/description
 118 $(call KernelPackage/$(1)/description)
 119     endef
 120   endif
 121
 122   ifneq ($(if $(KCONFIG),$(filter m,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
 123     ifneq ($(strip $(FILES)),)
 124       define Package/kmod-$(1)/install
 125                   mkdir -p $$(1)/lib/modules/$(LINUX_VERSION)
 126                   $(CP) -L $$(FILES) $$(1)/lib/modules/$(LINUX_VERSION)/
 127                   $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
 128                   $(call KernelPackage/$(1)/install,$$(1))
 129       endef
 130     endif
 131   $(if $(CONFIG_PACKAGE_kmod-$(1)),
 132     else
 133       compile: kmod-$(1)-unavailable
 134       kmod-$(1)-unavailable:
 135                 @echo "WARNING: kmod-$(1) is not available in the kernel config"
 136   )
 137   endif
 138   $$(eval $$(call BuildPackage,kmod-$(1)))
 139
 140   $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
 141 endef
 142
 143 define AutoLoad
 144   add_module $(1) "$(2)";
 145 endef
 146