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