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