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                 echo "$$$$$$$$2" > $(2)/etc/modules.d/$$$$$$$$1-$(1); \
  74                 modules="$$$$$$$${modules:+$$$$$$$$modules }$$$$$$$$1-$(1)"; \
  75         }; \
  76         $(3) \
  77         if [ -n "$$$$$$$$modules" ]; then \
  78                 mkdir -p $(2)/etc/modules.d; \
  79                 echo "#!/bin/sh" > $(2)/CONTROL/postinst; \
  80                 echo "[ -z \"\$$$$$$$$IPKG_INSTROOT\" ] || exit 0" >> $(2)/CONTROL/postinst; \
  81                 echo ". /etc/functions.sh" >> $(2)/CONTROL/postinst; \
  82                 echo "load_modules $$$$$$$$modules" >> $(2)/CONTROL/postinst; \
  83                 chmod 0755 $(2)/CONTROL/postinst; \
  84         fi
  85 endef
  86
  87
  88 define KernelPackage
  89   NAME:=$(1)
  90   $(eval $(call KernelPackage/Defaults))
  91   $(eval $(call KernelPackage/$(1)))
  92   $(eval $(call KernelPackage/$(1)/$(KERNEL)))
  93   $(eval $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL)))
  94
  95   define Package/kmod-$(1)
  96     TITLE:=$(TITLE)
  97     SECTION:=kernel
  98     CATEGORY:=Kernel modules
  99     DEFAULT:=m
 100     DESCRIPTION:=$(DESCRIPTION)
 101     EXTRA_DEPENDS:='kernel (=$(PKG_VERSION)-$(PKG_RELEASE))'
 102     $(call KernelPackage/$(1))
 103     $(call KernelPackage/$(1)/$(KERNEL))
 104     $(call KernelPackage/$(1)/$(BOARD)-$(KERNEL))
 105   endef
 106
 107   ifeq ($(findstring m,$(KCONFIG)),m)
 108     ifneq ($(strip $(FILES)),)
 109       define Package/kmod-$(1)/install
 110                 mkdir -p $$(1)/lib/modules/$(LINUX_VERSION)
 111                 $(CP) $$(FILES) $$(1)/lib/modules/$(LINUX_VERSION)/
 112                 $(call ModuleAutoLoad,$(1),$$(1),$(AUTOLOAD))
 113                 $(call KernelPackage/$(1)/install,$$(1))
 114       endef
 115     endif
 116   endif
 117   $$(eval $$(call BuildPackage,kmod-$(1)))
 118 endef
 119
 120 define AutoLoad
 121   add_module $(1) "$(2)";
 122 endef
 123
 124
 125 # FIXME: remove this crap
 126 define KMOD_template
 127 ifeq ($$(strip $(4)),)
 128 KDEPEND_$(1):=m
 129 else
 130 KDEPEND_$(1):=$($(4))
 131 endif
 132
 133 IDEPEND_$(1):=kernel ($(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE)) $(foreach pkg,$(5),", $(pkg)")
 134
 135 PKG_$(1) := $(PACKAGE_DIR)/kmod-$(2)_$(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE)_$(ARCH).ipk
 136 I_$(1) := $(KMOD_BUILD_DIR)/ipkg/$(2)
 137
 138 ifeq ($$(KDEPEND_$(1)),m)
 139 ifneq ($$(CONFIG_PACKAGE_KMOD_$(1)),)
 140 TARGETS += $$(PKG_$(1))
 141 endif
 142 ifeq ($$(CONFIG_PACKAGE_KMOD_$(1)),y)
 143 INSTALL_TARGETS += $$(PKG_$(1))
 144 endif
 145 endif
 146
 147 $$(PKG_$(1)): $(LINUX_DIR)/.modules_done
 148         rm -rf $$(I_$(1))
 149         $(SCRIPT_DIR)/make-ipkg-dir.sh $$(I_$(1)) ../control/kmod-$(2).control $(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE) $(ARCH)
 150         echo "Depends: $$(IDEPEND_$(1))" >> $$(I_$(1))/CONTROL/control
 151 ifneq ($(strip $(3)),)
 152         mkdir -p $$(I_$(1))/lib/modules/$(LINUX_VERSION)
 153         $(CP) $(3) $$(I_$(1))/lib/modules/$(LINUX_VERSION)
 154 endif
 155 ifneq ($(6),)
 156         mkdir -p $$(I_$(1))/etc/modules.d
 157         for module in $(7); do \
 158                 echo $$$$module >> $$(I_$(1))/etc/modules.d/$(6)-$(2); \
 159         done
 160         echo "#!/bin/sh" >> $$(I_$(1))/CONTROL/postinst
 161         echo "[ -z \"\$$$$IPKG_INSTROOT\" ] || exit" >> $$(I_$(1))/CONTROL/postinst
 162         echo ". /etc/functions.sh" >> $$(I_$(1))/CONTROL/postinst
 163         echo "load_modules /etc/modules.d/$(6)-$(2)" >> $$(I_$(1))/CONTROL/postinst
 164         chmod 0755 $$(I_$(1))/CONTROL/postinst
 165 endif
 166         $(8)
 167         $(IPKG_BUILD) $$(I_$(1)) $(PACKAGE_DIR)
 168 endef
 169