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 ifeq ($(DUMP),1)
   8   KERNEL:=<KERNEL>
   9   BOARD:=<BOARD>
  10   LINUX_VERSION:=<LINUX_VERSION>
  11 else
  12
  13   include $(TOPDIR)/.kernel.mk
  14   include $(INCLUDE_DIR)/target.mk
  15
  16   # check to see if .kernel.mk matches target.mk
  17   ifeq ($(CONFIG_BOARD)-$(CONFIG_KERNEL),$(BOARD)-$(KERNEL))
  18      LINUX_VERSION:=$(CONFIG_LINUX_VERSION)
  19      LINUX_RELEASE:=$(CONFIG_LINUX_RELEASE)
  20      LINUX_KARCH:=$(CONFIG_LINUX_KARCH)
  21   else
  22     ifneq ($(KERNEL_BUILD),1)
  23       # oops, old .kernel.config; rebuild it (hiding the misleading errors this produces)
  24       $(warning rebuilding .kernel.mk)
  25       $(TOPDIR)/.kernel.mk: FORCE
  26                 @$(MAKE) -C $(TOPDIR)/target/linux/$(BOARD)-$(KERNEL) $@ &>/dev/null
  27     endif
  28   endif
  29
  30   ifeq ($(KERNEL),2.6)
  31     LINUX_KMOD_SUFFIX=ko
  32   else
  33     LINUX_KMOD_SUFFIX=o
  34   endif
  35
  36   ifneq (,$(findstring uml,$(BOARD)))
  37     KERNEL_CC:=$(HOSTCC)
  38     KERNEL_CROSS:=
  39   else
  40     KERNEL_CC:=$(TARGET_CC)
  41     KERNEL_CROSS:=$(TARGET_CROSS)
  42   endif
  43
  44   KERNEL_BUILD_DIR:=$(BUILD_DIR)/linux-$(KERNEL)-$(BOARD)
  45   LINUX_DIR := $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
  46
  47   MODULES_SUBDIR:=lib/modules/$(LINUX_VERSION)
  48   MODULES_DIR := $(KERNEL_BUILD_DIR)/modules/$(MODULES_SUBDIR)
  49   TARGET_MODULES_DIR := $(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
  50
  51   LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
  52 endif
  53
  54
  55 define KernelPackage/Defaults
  56   FILES:=
  57   KCONFIG:=m
  58   AUTOLOAD:=
  59 endef
  60
  61 define ModuleAutoLoad
  62         export modules=; \
  63         add_module() { \
  64                 mkdir -p $(2)/etc/modules.d; \
  65                 ( \
  66                         for mod in $$$$$$$$2; do \
  67                                 getvar mod; \
  68                         done \
  69                 ) > $(2)/etc/modules.d/$$$$$$$$1-$(1); \
  70                 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$1-$(1)"; \
  71         }; \
  72         $(3) \
  73         if [ -n "$$$$$$$$modules" ]; then \
  74                 mkdir -p $(2)/etc/modules.d; \
  75                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
  76                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
  77                 echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
  78                 echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
  79                 chmod 0755 $(2)/CONTROL/postinst; \
  80         fi
  81 endef
  82
  83
  84 define KernelPackage
  85   NAME:=$(1)
  86   $(eval $(call KernelPackage/Defaults))
  87   $(eval $(call KernelPackage/$(1)))
  88   $(eval $(call KernelPackage/$(1)/$(KERNEL)))
  89   $(eval $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL)))
  90
  91   define Package/kmod-$(1)
  92     TITLE:=$(TITLE)
  93     SECTION:=kernel
  94     CATEGORY:=Kernel modules
  95     DEFAULT:=m
  96     DESCRIPTION:=$(DESCRIPTION)
  97     EXTRA_DEPENDS:='kernel (=$(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE))'
  98     $(call KernelPackage/$(1))
  99     $(call KernelPackage/$(1)/$(KERNEL))
 100     $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL))
 101   endef
 102
 103   ifeq ($(findstring m,$(KCONFIG)),m)
 104     ifneq ($(strip $(FILES)),)
 105       define Package/kmod-$(1)/install
 106                 mkdir -p $$(1)/lib/modules/$(LINUX_VERSION)
 107                 $(CP) $$(FILES) $$(1)/lib/modules/$(LINUX_VERSION)/
 108                 $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
 109                 $(call KernelPackage/$(1)/install,$$(1))
 110       endef
 111     endif
 112   endif
 113   $$(eval $$(call BuildPackage,kmod-$(1)))
 114 endef
 115
 116 define AutoLoad
 117   add_module $(1) "$(2)";
 118 endef
 119