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) $(LINUX_DIR)
  49 endef
  50 endif
  51
  52 ifeq ($(KERNEL),2.6)
  53   ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y)
  54     define Kernel/SetInitramfs
  55                 mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
  56                 grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
  57                 echo 'CONFIG_INITRAMFS_SOURCE="$(strip $(TARGET_DIR) $(INITRAMFS_EXTRA_FILES))"' >> $(LINUX_DIR)/.config
  58                 echo 'CONFIG_INITRAMFS_ROOT_UID=$(shell id -u)' >> $(LINUX_DIR)/.config
  59                 echo 'CONFIG_INITRAMFS_ROOT_GID=$(shell id -g)' >> $(LINUX_DIR)/.config
  60     endef
  61   else
  62     define Kernel/SetInitramfs
  63                 mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
  64                 grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
  65                 echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config
  66     endef
  67   endif
  68 endif
  69
  70 define Kernel/Configure/2.4
  71         $(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile
  72         $(MAKE) $(KERNEL_MAKEOPTS) oldconfig include/linux/compile.h include/linux/version.h
  73         $(MAKE) $(KERNEL_MAKEOPTS) dep
  74 endef
  75 define Kernel/Configure/2.6
  76         -$(MAKE) $(KERNEL_MAKEOPTS) oldconfig prepare scripts
  77 endef
  78 define Kernel/Configure/Default
  79         $(LINUX_CONFCMD) > $(LINUX_DIR)/.config.target
  80         $(SCRIPT_DIR)/metadata.pl kconfig $(TMP_DIR)/.packageinfo $(TOPDIR)/.config > $(LINUX_DIR)/.config.override
  81         $(SCRIPT_DIR)/kconfig.pl 'm+' $(LINUX_DIR)/.config.target $(LINUX_DIR)/.config.override > $(LINUX_DIR)/.config
  82         $(call Kernel/SetInitramfs)
  83         $(call Kernel/Configure/$(KERNEL))
  84         rm -rf $(KERNEL_BUILD_DIR)/modules
  85 endef
  86
  87 define Kernel/CompileModules/Default
  88         rm -f $(LINUX_DIR)/vmlinux $(LINUX_DIR)/System.map
  89         $(MAKE) $(KERNEL_MAKEOPTS) modules
  90 endef
  91
  92 define Kernel/CompileImage/Default
  93         $(if $(CONFIG_TARGET_ROOTFS_INITRAMFS),,rm -f $(TARGET_DIR)/init)
  94         $(MAKE) $(KERNEL_MAKEOPTS) $(KERNELNAME)
  95         $(KERNEL_CROSS)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S $(LINUX_DIR)/vmlinux $(LINUX_KERNEL)
  96         $(KERNEL_CROSS)objcopy -R .reginfo -R .note -R .comment -R .mdebug -S $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/vmlinux.elf
  97 endef
  98
  99 define Kernel/Clean/Default
 100         rm -f $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/.configured
 101         rm -f $(LINUX_KERNEL)
 102         $(MAKE) -C $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) clean
 103 endef
 104
 105