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 include $(INCLUDE_DIR)/kernel-version.mk
   9
  10 ifeq ($(DUMP),1)
  11   KERNEL?=<KERNEL>
  12   BOARD?=<BOARD>
  13   LINUX_VERSION?=<LINUX_VERSION>
  14 else
  15   include $(INCLUDE_DIR)/target.mk
  16
  17   export GCC_HONOUR_COPTS=s
  18
  19   ifeq ($(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   PLATFORM_DIR := $(TOPDIR)/target/linux/$(BOARD)-$(KERNEL)
  34   PATCH_DIR ?= ./patches$(shell [ -d "./patches-$(KERNEL_PATCHVER)" ] && printf -- "-$(KERNEL_PATCHVER)" || true )
  35   KERNEL_BUILD_DIR ?= $(BUILD_DIR_BASE)/linux-$(KERNEL)-$(BOARD)$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
  36   LINUX_DIR ?= $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
  37
  38   MODULES_SUBDIR:=lib/modules/$(LINUX_VERSION)
  39   TARGET_MODULES_DIR := $(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
  40
  41   LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
  42
  43   LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.bz2
  44   TESTING:=$(if $(findstring -rc,$(LINUX_VERSION)),/testing,)
  45   LINUX_SITE:=@KERNEL/linux/kernel/v$(KERNEL)$(TESTING) \
  46
  47   PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
  48 endif
  49 GENERIC_PLATFORM_DIR := $(TOPDIR)/target/linux/generic-$(KERNEL)
  50 GENERIC_PATCH_DIR := $(GENERIC_PLATFORM_DIR)/patches$(shell [ -d "$(GENERIC_PLATFORM_DIR)/patches-$(KERNEL_PATCHVER)" ] && printf -- "-$(KERNEL_PATCHVER)" || true )
  51
  52
  53 define KernelPackage/Defaults
  54   FILES:=
  55   AUTOLOAD:=
  56 endef
  57
  58 define ModuleAutoLoad
  59         export modules=; \
  60         add_module() { \
  61                 mkdir -p $(2)/etc/modules.d; \
  62                 ( \
  63                         for mod in $$$$$$$$2; do \
  64                                 getvar mod; \
  65                         done \
  66                 ) > $(2)/etc/modules.d/$$$$$$$$1-$(1); \
  67                 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$1-$(1)"; \
  68         }; \
  69         $(3) \
  70         if [ -n "$$$$$$$$modules" ]; then \
  71                 mkdir -p $(2)/etc/modules.d; \
  72                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
  73                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
  74                 echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
  75                 echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
  76                 chmod 0755 $(2)/CONTROL/postinst; \
  77         fi
  78 endef
  79
  80
  81 define KernelPackage
  82   NAME:=$(1)
  83   $(eval $(call Package/Default))
  84   $(eval $(call KernelPackage/Defaults))
  85   $(eval $(call KernelPackage/$(1)))
  86   $(eval $(call KernelPackage/$(1)/$(KERNEL)))
  87   $(eval $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL)))
  88
  89   define Package/kmod-$(1)
  90     TITLE:=$(TITLE)
  91     SECTION:=kernel
  92     CATEGORY:=Kernel modules
  93     DESCRIPTION:=$(DESCRIPTION)
  94     EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE))
  95     VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(BOARD)-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
  96     $(call KernelPackage/$(1))
  97     $(call KernelPackage/$(1)/$(KERNEL))
  98     $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL))
  99   endef
 100
 101   ifdef KernelPackage/$(1)/description
 102     define Package/kmod-$(1)/description
 103 $(call KernelPackage/$(1)/description)
 104     endef
 105   endif
 106
 107   # check that all CONFIG_* symbols in $(KCONFIG) are set to 'm'
 108   ifeq ($(filter-out m,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$(if $($(c)),$($(c)),n))),)
 109     ifneq ($(strip $(FILES)),)
 110       define Package/kmod-$(1)/install
 111                   mkdir -p $$(1)/lib/modules/$(LINUX_VERSION)
 112                   $(CP) -L $$(FILES) $$(1)/lib/modules/$(LINUX_VERSION)/
 113                   $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
 114                   $(call KernelPackage/$(1)/install,$$(1))
 115       endef
 116     endif
 117   endif
 118   $$(eval $$(call BuildPackage,kmod-$(1)))
 119
 120   $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
 121 endef
 122
 123 define AutoLoad
 124   add_module $(1) "$(2)";
 125 endef
 126