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     $(TOPDIR)/.kernel.mk: FORCE
  25     ifneq ($(KERNEL_BUILD),1)
  26       $(TOPDIR)/.kernel.mk:
  27                 @$(MAKE) -C $(TOPDIR)/target/linux/$(BOARD)-$(KERNEL) $@ &>/dev/null
  28     endif
  29   endif
  30
  31   ifeq ($(KERNEL),2.6)
  32     LINUX_KMOD_SUFFIX=ko
  33   else
  34     LINUX_KMOD_SUFFIX=o
  35   endif
  36
  37   ifneq (,$(findstring uml,$(BOARD)))
  38     KERNEL_CC:=$(HOSTCC)
  39     KERNEL_CROSS:=
  40   else
  41     KERNEL_CC:=$(TARGET_CC)
  42     KERNEL_CROSS:=$(TARGET_CROSS)
  43   endif
  44
  45   KERNEL_BUILD_DIR:=$(BUILD_DIR)/linux-$(KERNEL)-$(BOARD)
  46   LINUX_DIR := $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
  47
  48   MODULES_SUBDIR:=lib/modules/$(LINUX_VERSION)
  49   MODULES_DIR := $(KERNEL_BUILD_DIR)/modules/$(MODULES_SUBDIR)
  50   TARGET_MODULES_DIR := $(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
  51
  52   LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
  53 endif
  54
  55
  56 define KernelPackage/Defaults
  57   FILES:=
  58   KCONFIG:=m
  59   AUTOLOAD:=
  60 endef
  61
  62 define ModuleAutoLoad
  63         export modules=; \
  64         add_module() { \
  65                 mkdir -p $(2)/etc/modules.d; \
  66                 ( \
  67                         for mod in $$$$$$$$2; do \
  68                                 getvar mod; \
  69                         done \
  70                 ) > $(2)/etc/modules.d/$$$$$$$$1-$(1); \
  71                 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$1-$(1)"; \
  72         }; \
  73         $(3) \
  74         if [ -n "$$$$$$$$modules" ]; then \
  75                 mkdir -p $(2)/etc/modules.d; \
  76                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
  77                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
  78                 echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
  79                 echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
  80                 chmod 0755 $(2)/CONTROL/postinst; \
  81         fi
  82 endef
  83
  84
  85 define KernelPackage
  86   NAME:=$(1)
  87   $(eval $(call KernelPackage/Defaults))
  88   $(eval $(call KernelPackage/$(1)))
  89   $(eval $(call KernelPackage/$(1)/$(KERNEL)))
  90   $(eval $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL)))
  91
  92   define Package/kmod-$(1)
  93     TITLE:=$(TITLE)
  94     SECTION:=kernel
  95     CATEGORY:=Kernel modules
  96     DEFAULT:=m
  97     DESCRIPTION:=$(DESCRIPTION)
  98     EXTRA_DEPENDS:='kernel (=$(PKG_VERSION)-$(PKG_RELEASE))'
  99     $(call KernelPackage/$(1))
 100     $(call KernelPackage/$(1)/$(KERNEL))
 101     $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL))
 102   endef
 103
 104   ifeq ($(findstring m,$(KCONFIG)),m)
 105     ifneq ($(strip $(FILES)),)
 106       define Package/kmod-$(1)/install
 107                 mkdir -p $$(1)/lib/modules/$(LINUX_VERSION)
 108                 $(CP) $$(FILES) $$(1)/lib/modules/$(LINUX_VERSION)/
 109                 $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
 110                 $(call KernelPackage/$(1)/install,$$(1))
 111       endef
 112     endif
 113   endif
 114   $$(eval $$(call BuildPackage,kmod-$(1)))
 115 endef
 116
 117 define AutoLoad
 118   add_module $(1) "$(2)";
 119 endef
 120