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 ($(DUMP),1)
   9   KERNEL?=<KERNEL>
  10   BOARD?=<BOARD>
  11   LINUX_VERSION?=<LINUX_VERSION>
  12 else
  13   include $(INCLUDE_DIR)/target.mk
  14
  15   export GCC_HONOUR_COPTS=s
  16
  17   ifeq ($(KERNEL),2.6)
  18     LINUX_KMOD_SUFFIX=ko
  19   else
  20     LINUX_KMOD_SUFFIX=o
  21   endif
  22
  23   ifneq (,$(findstring uml,$(BOARD)))
  24     KERNEL_CC:=$(HOSTCC)
  25     KERNEL_CROSS:=
  26   else
  27     KERNEL_CC:=$(TARGET_CC)
  28     KERNEL_CROSS:=$(TARGET_CROSS)
  29   endif
  30
  31   KERNEL_PATCHVER:=$(shell echo $(LINUX_VERSION) | cut -d. -f1,2,3 | cut -d- -f1)
  32   PLATFORM_DIR := $(TOPDIR)/target/linux/$(BOARD)-$(KERNEL)
  33   PATCH_DIR ?= ./patches$(shell [ -d "./patches-$(KERNEL_PATCHVER)" ] && printf -- "-$(KERNEL_PATCHVER)" || true )
  34   KERNEL_BUILD_DIR ?= $(BUILD_DIR_BASE)/linux-$(KERNEL)-$(BOARD)$(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:=http://www.us.kernel.org/pub/linux/kernel/v$(KERNEL)$(TESTING) \
  45            http://www.us.kernel.org/pub/linux/kernel/v$(KERNEL)$(TESTING) \
  46            http://www.kernel.org/pub/linux/kernel/v$(KERNEL)$(TESTING) \
  47            http://www.de.kernel.org/pub/linux/kernel/v$(KERNEL)$(TESTING)
  48
  49   PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)
  50 endif
  51 GENERIC_PLATFORM_DIR := $(TOPDIR)/target/linux/generic-$(KERNEL)
  52 GENERIC_PATCH_DIR := $(GENERIC_PLATFORM_DIR)/patches$(shell [ -d "$(GENERIC_PLATFORM_DIR)/patches-$(KERNEL_PATCHVER)" ] && printf -- "-$(KERNEL_PATCHVER)" || true )
  53
  54 ifeq ($(DUMP),)
  55   -include $(LINUX_DIR)/.config
  56 endif
  57
  58 define KernelPackage/Defaults
  59   FILES:=
  60   AUTOLOAD:=
  61 endef
  62
  63 define ModuleAutoLoad
  64         export modules=; \
  65         add_module() { \
  66                 mkdir -p $(2)/etc/modules.d; \
  67                 ( \
  68                         for mod in $$$$$$$$2; do \
  69                                 getvar mod; \
  70                         done \
  71                 ) > $(2)/etc/modules.d/$$$$$$$$1-$(1); \
  72                 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$1-$(1)"; \
  73         }; \
  74         $(3) \
  75         if [ -n "$$$$$$$$modules" ]; then \
  76                 mkdir -p $(2)/etc/modules.d; \
  77                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
  78                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
  79                 echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
  80                 echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
  81                 chmod 0755 $(2)/CONTROL/postinst; \
  82         fi
  83 endef
  84
  85
  86 define KernelPackage
  87   NAME:=$(1)
  88   $(eval $(call Package/Default))
  89   $(eval $(call KernelPackage/Defaults))
  90   $(eval $(call KernelPackage/$(1)))
  91   $(eval $(call KernelPackage/$(1)/$(KERNEL)))
  92   $(eval $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL)))
  93
  94   define Package/kmod-$(1)
  95     TITLE:=$(TITLE)
  96     SECTION:=kernel
  97     CATEGORY:=Kernel modules
  98     DESCRIPTION:=$(DESCRIPTION)
  99     EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE))
 100     $(call KernelPackage/$(1))
 101     $(call KernelPackage/$(1)/$(KERNEL))
 102     $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL))
 103   endef
 104
 105   ifneq ($(if $(KCONFIG),$(filter m,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$($(c)))),.),)
 106     ifneq ($(strip $(FILES)),)
 107       define Package/kmod-$(1)/install
 108                   mkdir -p $$(1)/lib/modules/$(LINUX_VERSION)
 109                   $(CP) -L $$(FILES) $$(1)/lib/modules/$(LINUX_VERSION)/
 110                   $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
 111                   $(call KernelPackage/$(1)/install,$$(1))
 112       endef
 113     endif
 114   endif
 115   $$(eval $$(call BuildPackage,kmod-$(1)))
 116
 117   $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
 118 endef
 119
 120 define AutoLoad
 121   add_module $(1) "$(2)";
 122 endef
 123