include/kernel-defaults.mk

   1 #
   2 # Copyright (C) 2006-2007 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 KERNELNAME=
   9 ifneq (,$(findstring x86,$(BOARD)))
  10   KERNELNAME="bzImage"
  11 endif
  12 ifneq (,$(findstring rdc,$(BOARD)))
  13   KERNELNAME="bzImage"
  14 endif
  15 ifneq (,$(findstring ppc,$(BOARD)))
  16   KERNELNAME="uImage"
  17 endif
  18 ifneq (,$(findstring avr32,$(BOARD)))
  19   KERNELNAME="uImage"
  20 endif
  21
  22 KERNEL_MAKEOPTS := -C $(LINUX_DIR) \
  23         CROSS_COMPILE="$(KERNEL_CROSS)" \
  24         ARCH="$(LINUX_KARCH)" \
  25         KBUILD_HAVE_NLS=no \
  26         CONFIG_SHELL="$(BASH)"
  27
  28 INITRAMFS_EXTRA_FILES ?= $(GENERIC_PLATFORM_DIR)/image/initramfs-base-files.txt
  29
  30 ifneq (,$(KERNEL_CC))
  31   KERNEL_MAKEOPTS += CC="$(KERNEL_CC)"
  32 endif
  33
  34 # defined in quilt.mk
  35 Kernel/Patch:=$(Kernel/Patch/Default)
  36 ifeq ($(strip $(CONFIG_EXTERNAL_KERNEL_TREE)),"")
  37 define Kernel/Prepare/Default
  38         bzcat $(DL_DIR)/$(LINUX_SOURCE) | $(TAR) -C $(KERNEL_BUILD_DIR) $(TAR_OPTIONS)
  39         $(Kernel/Patch)
  40         $(if $(QUILT),touch $(LINUX_DIR)/.quilt_used)
  41 endef
  42 else
  43 define Kernel/Prepare/Default
  44         mkdir -p $(KERNEL_BUILD_DIR)
  45         if [ -d $(LINUX_DIR) ]; then \
  46                 rmdir $(LINUX_DIR); \
  47         fi
  48         ln -s $(CONFIG_EXTERNAL_KERNEL_TREE) $(LINUX_DIR)
  49 endef
  50 endif
  51
  52 define Kernel/Configure/2.4
  53         $(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile
  54         $(MAKE) $(KERNEL_MAKEOPTS) oldconfig include/linux/compile.h include/linux/version.h
  55         $(MAKE) $(KERNEL_MAKEOPTS) dep
  56 endef
  57 define Kernel/Configure/2.6
  58         -$(MAKE) $(KERNEL_MAKEOPTS) oldconfig prepare scripts
  59 endef
  60 define Kernel/Configure/Default
  61         $(LINUX_CONFCMD) > $(LINUX_DIR)/.config.target
  62         $(SCRIPT_DIR)/metadata.pl kconfig $(TMP_DIR)/.packageinfo $(TOPDIR)/.config > $(LINUX_DIR)/.config.override
  63         $(SCRIPT_DIR)/kconfig.pl 'm+' $(LINUX_DIR)/.config.target $(LINUX_DIR)/.config.override > $(LINUX_DIR)/.config
  64         $(call Kernel/Configure/$(KERNEL))
  65         rm -rf $(KERNEL_BUILD_DIR)/modules
  66 endef
  67
  68 define Kernel/CompileModules/Default
  69         rm -f $(LINUX_DIR)/vmlinux $(LINUX_DIR)/System.map
  70         $(MAKE) $(KERNEL_MAKEOPTS) modules
  71 endef
  72
  73 ifeq ($(KERNEL),2.6)
  74   ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y)
  75     define Kernel/SetInitramfs
  76                 mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
  77                 grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
  78                 echo 'CONFIG_INITRAMFS_SOURCE="$(strip $(TARGET_DIR) $(INITRAMFS_EXTRA_FILES))"' >> $(LINUX_DIR)/.config
  79                 echo 'CONFIG_INITRAMFS_ROOT_UID=$(shell id -u)' >> $(LINUX_DIR)/.config
  80                 echo 'CONFIG_INITRAMFS_ROOT_GID=$(shell id -g)' >> $(LINUX_DIR)/.config
  81     endef
  82   else
  83     define Kernel/SetInitramfs
  84                 mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
  85                 grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
  86                 rm -f $(TARGET_DIR)/init
  87                 echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config
  88     endef
  89   endif
  90 endif
  91 define Kernel/CompileImage/Default
  92         $(call Kernel/SetInitramfs)
  93         $(MAKE) $(KERNEL_MAKEOPTS) $(KERNELNAME)
  94         $(KERNEL_CROSS)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S $(LINUX_DIR)/vmlinux $(LINUX_KERNEL)
  95         $(KERNEL_CROSS)objcopy -R .reginfo -R .note -R .comment -R .mdebug -S $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/vmlinux.elf
  96 endef
  97
  98 define Kernel/Clean/Default
  99         rm -f $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/.configured
 100         rm -f $(LINUX_KERNEL)
 101         $(MAKE) -C $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) clean
 102 endef
 103
 104