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 8KERNELNAME= 9ifneq (,$(findstring x86,$(BOARD))) 10 KERNELNAME="bzImage" 11endif 12ifneq (,$(findstring rdc,$(BOARD))) 13 KERNELNAME="bzImage" 14endif 15ifneq (,$(findstring ppc,$(BOARD))) 16 KERNELNAME="uImage" 17endif 18ifneq (,$(findstring avr32,$(BOARD))) 19 KERNELNAME="uImage" 20endif 21 22KERNEL_MAKEOPTS := -C $(LINUX_DIR) \ 23 CROSS_COMPILE="$(KERNEL_CROSS)" \ 24 ARCH="$(LINUX_KARCH)" \ 25 KBUILD_HAVE_NLS=no \ 26 CONFIG_SHELL="$(BASH)" 27 28INITRAMFS_EXTRA_FILES ?= $(GENERIC_PLATFORM_DIR)/image/initramfs-base-files.txt 29 30ifneq (,$(KERNEL_CC)) 31 KERNEL_MAKEOPTS += CC="$(KERNEL_CC)" 32endif 33 34# defined in quilt.mk 35Kernel/Patch:=$(Kernel/Patch/Default) 36ifeq ($(strip $(CONFIG_EXTERNAL_KERNEL_TREE)),"") 37define 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) 41endef 42else 43define 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) 49endef 50endif 51 52define 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) $(KERNEL_MAKEOPTS) dep 56endef 57define Kernel/Configure/2.6 58 -$(MAKE) $(KERNEL_MAKEOPTS) oldconfig prepare scripts 59endef 60define 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 66endef 67 68define Kernel/CompileModules/Default 69 rm -f $(LINUX_DIR)/vmlinux $(LINUX_DIR)/System.map 70 $(MAKE) $(KERNEL_MAKEOPTS) modules 71endef 72 73ifeq ($(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 90endif 91define 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 96endef 97 98define 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 102endef 103 104 105