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 ($(__target_inc),)
   9   include $(INCLUDE_DIR)/target.mk
  10 endif
  11
  12 ifeq ($(DUMP),1)
  13   KERNEL?=<KERNEL>
  14   BOARD?=<BOARD>
  15   LINUX_VERSION?=<LINUX_VERSION>
  16 else
  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   PATCH_DIR ?= ./patches$(shell [ -d "./patches-$(KERNEL_PATCHVER)" ] && printf -- "-$(KERNEL_PATCHVER)" || true )
  34   KERNEL_BUILD_DIR ?= $(BUILD_DIR_BASE)/linux-$(BOARD)$(if $(SUBTARGET),_$(SUBTARGET))$(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:=@KERNEL/linux/kernel/v$(KERNEL)$(TESTING) \
  45
  46   ifneq ($(TARGET_BUILD),1)
  47     PKG_BUILD_DIR ?= $(KERNEL_BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
  48   endif
  49 endif
  50
  51 ifneq (,$(findstring uml,$(BOARD)))
  52   LINUX_KARCH:=um
  53 else
  54   LINUX_KARCH:=$(shell echo $(ARCH) | sed -e 's/i[3-9]86/i386/' \
  55         -e 's/mipsel/mips/' \
  56         -e 's/mipseb/mips/' \
  57         -e 's/powerpc/ppc/' \
  58         -e 's/sh[234]/sh/' \
  59         -e 's/armeb/arm/' \
  60   )
  61 endif
  62
  63
  64 define KernelPackage/Defaults
  65   FILES:=
  66   AUTOLOAD:=
  67 endef
  68
  69 define ModuleAutoLoad
  70         export modules=; \
  71         add_module() { \
  72                 mkdir -p $(2)/etc/modules.d; \
  73                 ( \
  74                         for mod in $$$$$$$$2; do \
  75                                 getvar mod; \
  76                         done \
  77                 ) > $(2)/etc/modules.d/$$$$$$$$1-$(1); \
  78                 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$1-$(1)"; \
  79         }; \
  80         $(3) \
  81         if [ -n "$$$$$$$$modules" ]; then \
  82                 mkdir -p $(2)/etc/modules.d; \
  83                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
  84                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
  85                 echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
  86                 echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
  87                 chmod 0755 $(2)/CONTROL/postinst; \
  88         fi
  89 endef
  90
  91
  92 define KernelPackage
  93   NAME:=$(1)
  94   $(eval $(call Package/Default))
  95   $(eval $(call KernelPackage/Defaults))
  96   $(eval $(call KernelPackage/$(1)))
  97   $(eval $(call KernelPackage/$(1)/$(KERNEL)))
  98   $(eval $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL)))
  99
 100   define Package/kmod-$(1)
 101     TITLE:=$(TITLE)
 102     SECTION:=kernel
 103     CATEGORY:=Kernel modules
 104     DESCRIPTION:=$(DESCRIPTION)
 105     EXTRA_DEPENDS:=kernel (=$(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE))
 106     VERSION:=$(LINUX_VERSION)$(if $(PKG_VERSION),+$(PKG_VERSION))-$(BOARD)-$(if $(PKG_RELEASE),$(PKG_RELEASE),$(LINUX_RELEASE))
 107     $(call KernelPackage/$(1))
 108     $(call KernelPackage/$(1)/$(KERNEL))
 109     $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL))
 110   endef
 111
 112   ifdef KernelPackage/$(1)/description
 113     define Package/kmod-$(1)/description
 114 $(call KernelPackage/$(1)/description)
 115     endef
 116   endif
 117
 118   # check that all CONFIG_* symbols in $(KCONFIG) are set to 'm'
 119   ifeq ($(filter-out m,$(foreach c,$(filter-out %=y %=n %=m,$(KCONFIG)),$(if $($(c)),$($(c)),n))),)
 120     ifneq ($(strip $(FILES)),)
 121       define Package/kmod-$(1)/install
 122                   mkdir -p $$(1)/lib/modules/$(LINUX_VERSION)
 123                   $(CP) -L $$(FILES) $$(1)/lib/modules/$(LINUX_VERSION)/
 124                   $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
 125                   $(call KernelPackage/$(1)/install,$$(1))
 126       endef
 127     endif
 128   $(if $(CONFIG_PACKAGE_kmod-$(1)),
 129     else
 130       compile: kmod-$(1)-unavailable
 131       kmod-$(1)-unavailable:
 132                 @echo "WARNING: kmod-$(1) is not available in the kernel config"
 133   )
 134   endif
 135   $$(eval $$(call BuildPackage,kmod-$(1)))
 136
 137   $$(IPKG_kmod-$(1)): $$(wildcard $$(FILES))
 138 endef
 139
 140 define AutoLoad
 141   add_module $(1) "$(2)";
 142 endef
 143