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   KERNELNAME=
  35   ifneq (,$(findstring x86,$(BOARD)))
  36     KERNELNAME="bzImage"
  37   endif
  38   ifneq (,$(findstring ppc,$(BOARD)))
  39     KERNELNAME="uImage"
  40   endif
  41
  42   ifneq (,$(findstring uml,$(BOARD)))
  43     LINUX_KARCH:=um
  44     KERNEL_CC:=$(HOSTCC)
  45     KERNEL_CROSS:=
  46   else
  47     KERNEL_CC:=$(TARGET_CC)
  48     KERNEL_CROSS:=$(TARGET_CROSS)
  49   endif
  50
  51   KERNEL_BUILD_DIR:=$(BUILD_DIR)/linux-$(KERNEL)-$(BOARD)
  52   LINUX_DIR := $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
  53
  54   MODULES_SUBDIR:=lib/modules/$(LINUX_VERSION)
  55   MODULES_DIR := $(KERNEL_BUILD_DIR)/modules/$(MODULES_SUBDIR)
  56   TARGET_MODULES_DIR := $(LINUX_TARGET_DIR)/$(MODULES_SUBDIR)
  57   KMOD_BUILD_DIR := $(KERNEL_BUILD_DIR)/linux-modules
  58
  59   LINUX_KERNEL:=$(KERNEL_BUILD_DIR)/vmlinux
  60 endif
  61
  62
  63 define KernelPackage/Defaults
  64   FILES:=
  65   KCONFIG:=m
  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 $$$$$$$$2; do \
  75                                 getvar mod; \
  76                         done \
  77                 ) > $(2)/etc/modules.d/$$$$$$$$1-$(1); \
  78                 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$1-$(1)"; \
  79         }; \
  80         $(3) \
  81         if [ -n "$$$$$$$$modules" ]; then \
  82                 mkdir -p $(2)/etc/modules.d; \
  83                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
  84                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
  85                 echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
  86                 echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
  87                 chmod 0755 $(2)/CONTROL/postinst; \
  88         fi
  89 endef
  90
  91
  92 define KernelPackage
  93   NAME:=$(1)
  94   $(eval $(call KernelPackage/Defaults))
  95   $(eval $(call KernelPackage/$(1)))
  96   $(eval $(call KernelPackage/$(1)/$(KERNEL)))
  97   $(eval $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL)))
  98
  99   define Package/kmod-$(1)
 100     TITLE:=$(TITLE)
 101     SECTION:=kernel
 102     CATEGORY:=Kernel modules
 103     DEFAULT:=m
 104     DESCRIPTION:=$(DESCRIPTION)
 105     EXTRA_DEPENDS:='kernel (=$(PKG_VERSION)-$(PKG_RELEASE))'
 106     $(call KernelPackage/$(1))
 107     $(call KernelPackage/$(1)/$(KERNEL))
 108     $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL))
 109   endef
 110
 111   ifeq ($(findstring m,$(KCONFIG)),m)
 112     ifneq ($(strip $(FILES)),)
 113       define Package/kmod-$(1)/install
 114                 mkdir -p $$(1)/lib/modules/$(LINUX_VERSION)
 115                 $(CP) $$(FILES) $$(1)/lib/modules/$(LINUX_VERSION)/
 116                 $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
 117                 $(call KernelPackage/$(1)/install,$$(1))
 118       endef
 119     endif
 120   endif
 121   $$(eval $$(call BuildPackage,kmod-$(1)))
 122 endef
 123
 124 define AutoLoad
 125   add_module $(1) "$(2)";
 126 endef
 127
 128
 129 # FIXME: remove this crap
 130 define KMOD_template
 131 ifeq ($$(strip $(4)),)
 132 KDEPEND_$(1):=m
 133 else
 134 KDEPEND_$(1):=$($(4))
 135 endif
 136
 137 IDEPEND_$(1):=kernel ($(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE)) $(foreach pkg,$(5),", $(pkg)")
 138
 139 PKG_$(1) := $(PACKAGE_DIR)/kmod-$(2)_$(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE)_$(ARCH).ipk
 140 I_$(1) := $(KMOD_BUILD_DIR)/ipkg/$(2)
 141
 142 ifeq ($$(KDEPEND_$(1)),m)
 143 ifneq ($$(CONFIG_PACKAGE_KMOD_$(1)),)
 144 TARGETS += $$(PKG_$(1))
 145 endif
 146 ifeq ($$(CONFIG_PACKAGE_KMOD_$(1)),y)
 147 INSTALL_TARGETS += $$(PKG_$(1))
 148 endif
 149 endif
 150
 151 $$(PKG_$(1)): $(LINUX_DIR)/.modules_done
 152         rm -rf $$(I_$(1))
 153         $(SCRIPT_DIR)/make-ipkg-dir.sh $$(I_$(1)) ../control/kmod-$(2).control $(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE) $(ARCH)
 154         echo "Depends: $$(IDEPEND_$(1))" >> $$(I_$(1))/CONTROL/control
 155 ifneq ($(strip $(3)),)
 156         mkdir -p $$(I_$(1))/lib/modules/$(LINUX_VERSION)
 157         $(CP) $(3) $$(I_$(1))/lib/modules/$(LINUX_VERSION)
 158 endif
 159 ifneq ($(6),)
 160         mkdir -p $$(I_$(1))/etc/modules.d
 161         for module in $(7); do \
 162                 echo $$$$module >> $$(I_$(1))/etc/modules.d/$(6)-$(2); \
 163         done
 164         echo "#!/bin/sh" >> $$(I_$(1))/CONTROL/postinst
 165         echo "[ -z \"\$$$$IPKG_INSTROOT\" ] || exit" >> $$(I_$(1))/CONTROL/postinst
 166         echo ". /etc/functions.sh" >> $$(I_$(1))/CONTROL/postinst
 167         echo "load_modules /etc/modules.d/$(6)-$(2)" >> $$(I_$(1))/CONTROL/postinst
 168         chmod 0755 $$(I_$(1))/CONTROL/postinst
 169 endif
 170         $(8)
 171         $(IPKG_BUILD) $$(I_$(1)) $(PACKAGE_DIR)
 172 endef
 173