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="$(LINUX_KARCH)" \
  25         CONFIG_SHELL="$(BASH)"
  26
  27 INITRAMFS_EXTRA_FILES ?= $(GENERIC_PLATFORM_DIR)/image/initramfs-base-files.txt
  28
  29 ifneq (,$(KERNEL_CC))
  30   KERNEL_MAKEOPTS += CC="$(KERNEL_CC)"
  31 endif
  32
  33 # defined in quilt.mk
  34 Kernel/Patch:=$(Kernel/Patch/Default)
  35 ifeq ($(strip $(CONFIG_EXTERNAL_KERNEL_TREE)),"")
  36 define Kernel/Prepare/Default
  37         bzcat $(DL_DIR)/$(LINUX_SOURCE) | $(TAR) -C $(KERNEL_BUILD_DIR) $(TAR_OPTIONS)
  38         $(Kernel/Patch)
  39         $(if $(QUILT),touch $(LINUX_DIR)/.quilt_used)
  40 endef
  41 else
  42 define Kernel/Prepare/Default
  43         mkdir -p $(KERNEL_BUILD_DIR)
  44         if [ -d $(LINUX_DIR) ]; then \
  45                 rmdir $(LINUX_DIR); \
  46         fi
  47         ln -s $(CONFIG_EXTERNAL_KERNEL_TREE) $(LINUX_DIR)
  48 endef
  49 endif
  50
  51 define Kernel/Configure/2.4
  52         $(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile
  53         $(MAKE) $(KERNEL_MAKEOPTS) oldconfig include/linux/compile.h include/linux/version.h
  54         $(MAKE) $(KERNEL_MAKEOPTS) dep
  55 endef
  56 define Kernel/Configure/2.6
  57         -$(MAKE) $(KERNEL_MAKEOPTS) oldconfig prepare scripts
  58 endef
  59 define Kernel/Configure/Default
  60         $(LINUX_CONFCMD) > $(LINUX_DIR)/.config.target
  61         $(SCRIPT_DIR)/metadata.pl kconfig $(TMP_DIR)/.packageinfo $(TOPDIR)/.config > $(LINUX_DIR)/.config.override
  62         $(SCRIPT_DIR)/kconfig.pl 'm+' $(LINUX_DIR)/.config.target $(LINUX_DIR)/.config.override > $(LINUX_DIR)/.config
  63         $(call Kernel/Configure/$(KERNEL))
  64         rm -rf $(KERNEL_BUILD_DIR)/modules
  65 endef
  66
  67 define Kernel/CompileModules/Default
  68         rm -f $(LINUX_DIR)/vmlinux $(LINUX_DIR)/System.map
  69         $(MAKE) $(KERNEL_MAKEOPTS) modules
  70 endef
  71
  72 ifeq ($(KERNEL),2.6)
  73   ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y)
  74     define Kernel/SetInitramfs
  75                 mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
  76                 grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
  77                 echo 'CONFIG_INITRAMFS_SOURCE="$(strip $(TARGET_DIR) $(INITRAMFS_EXTRA_FILES))"' >> $(LINUX_DIR)/.config
  78                 echo 'CONFIG_INITRAMFS_ROOT_UID=$(shell id -u)' >> $(LINUX_DIR)/.config
  79                 echo 'CONFIG_INITRAMFS_ROOT_GID=$(shell id -g)' >> $(LINUX_DIR)/.config
  80     endef
  81   else
  82     define Kernel/SetInitramfs
  83                 mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
  84                 grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
  85                 rm -f $(TARGET_DIR)/init
  86                 echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config
  87     endef
  88   endif
  89 endif
  90 define Kernel/CompileImage/Default
  91         $(call Kernel/SetInitramfs)
  92         $(MAKE) $(KERNEL_MAKEOPTS) $(KERNELNAME)
  93         $(KERNEL_CROSS)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S $(LINUX_DIR)/vmlinux $(LINUX_KERNEL)
  94         $(KERNEL_CROSS)objcopy -R .reginfo -R .note -R .comment -R .mdebug -S $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/vmlinux.elf
  95 endef
  96
  97 define Kernel/Clean/Default
  98         rm -f $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/.configured
  99         rm -f $(LINUX_KERNEL)
 100         $(MAKE) -C $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) clean
 101 endef
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 103