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 define Kernel/Prepare/Default
  36         bzcat $(DL_DIR)/$(LINUX_SOURCE) | $(TAR) -C $(KERNEL_BUILD_DIR) $(TAR_OPTIONS)
  37         $(Kernel/Patch)
  38         $(if $(QUILT),touch $(LINUX_DIR)/.quilt_used)
  39 endef
  40
  41 define Kernel/Configure/2.4
  42         $(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile
  43         $(MAKE) $(KERNEL_MAKEOPTS) oldconfig include/linux/compile.h include/linux/version.h
  44         $(MAKE) $(KERNEL_MAKEOPTS) dep
  45 endef
  46 define Kernel/Configure/2.6
  47         -$(MAKE) $(KERNEL_MAKEOPTS) oldconfig prepare scripts
  48 endef
  49 define Kernel/Configure/Default
  50         $(LINUX_CONFCMD) > $(LINUX_DIR)/.config.target
  51         $(SCRIPT_DIR)/metadata.pl kconfig $(TMP_DIR)/.packageinfo $(TOPDIR)/.config > $(LINUX_DIR)/.config.override
  52         $(SCRIPT_DIR)/kconfig.pl 'm+' $(LINUX_DIR)/.config.target $(LINUX_DIR)/.config.override > $(LINUX_DIR)/.config
  53         $(call Kernel/Configure/$(KERNEL))
  54         rm -rf $(KERNEL_BUILD_DIR)/modules
  55 endef
  56
  57 define Kernel/CompileModules/Default
  58         rm -f $(LINUX_DIR)/vmlinux $(LINUX_DIR)/System.map
  59         $(MAKE) $(KERNEL_MAKEOPTS) modules
  60 endef
  61
  62 ifeq ($(KERNEL),2.6)
  63   ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y)
  64     define Kernel/SetInitramfs
  65                 mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
  66                 grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
  67                 echo 'CONFIG_INITRAMFS_SOURCE="$(strip $(TARGET_DIR) $(INITRAMFS_EXTRA_FILES))"' >> $(LINUX_DIR)/.config
  68                 echo 'CONFIG_INITRAMFS_ROOT_UID=$(shell id -u)' >> $(LINUX_DIR)/.config
  69                 echo 'CONFIG_INITRAMFS_ROOT_GID=$(shell id -g)' >> $(LINUX_DIR)/.config
  70     endef
  71   else
  72     define Kernel/SetInitramfs
  73                 mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
  74                 grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
  75                 rm -f $(TARGET_DIR)/init
  76                 echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config
  77     endef
  78   endif
  79 endif
  80 define Kernel/CompileImage/Default
  81         $(call Kernel/SetInitramfs)
  82         $(MAKE) $(KERNEL_MAKEOPTS) $(KERNELNAME)
  83         $(KERNEL_CROSS)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S $(LINUX_DIR)/vmlinux $(LINUX_KERNEL)
  84         $(KERNEL_CROSS)objcopy -R .reginfo -R .note -R .comment -R .mdebug -S $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/vmlinux.elf
  85 endef
  86
  87 define Kernel/Clean/Default
  88         rm -f $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/.configured
  89         rm -f $(LINUX_KERNEL)
  90         $(MAKE) -C $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) clean
  91 endef
  92
  93