2 # Copyright (C) 2006 OpenWrt.org
4 # This is free software, licensed under the GNU General Public License v2.
5 # See /LICENSE for more information.
9 include $(INCLUDE_DIR)/host.mk
10 include $(INCLUDE_DIR)/kernel.mk
12 LINUX_SOURCE:=linux-$(LINUX_VERSION).tar.bz2
13 LINUX_SITE:=http://www.us.kernel.org/pub/linux/kernel/v$(KERNEL) \
14 http://www.us.kernel.org/pub/linux/kernel/v$(KERNEL) \
15 http://www.kernel.org/pub/linux/kernel/v$(KERNEL) \
16 http://www.de.kernel.org/pub/linux/kernel/v$(KERNEL)
18 LINUX_CONFIG:=./config
20 ifneq (,$(findstring uml,$(BOARD)))
23 LINUX_KARCH:=$(shell echo $(ARCH) | sed -e 's/i[3-9]86/i386/' \
33 ifneq (,$(findstring x86,$(BOARD)))
36 ifneq (,$(findstring ppc,$(BOARD)))
41 define Kernel/Prepare/Default
42 bzcat $(DL_DIR)/$(LINUX_SOURCE) | tar -C $(KERNEL_BUILD_DIR) $(TAR_OPTIONS)
43 [ -d ../generic-$(KERNEL)/patches ] && $(PATCH) $(LINUX_DIR) ../generic-$(KERNEL)/patches
44 [ -d ./patches ] && $(PATCH) $(LINUX_DIR) ./patches
47 $(call Kernel/Prepare/Default)
51 define Kernel/Configure/2.4
52 $(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile
53 $(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" CC="$(KERNEL_CC)" ARCH=$(LINUX_KARCH) oldconfig include/linux/compile.h include/linux/version.h
54 $(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" ARCH=$(LINUX_KARCH) dep
56 define Kernel/Configure/2.6
57 $(MAKE) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" CC="$(KERNEL_CC)" ARCH=$(LINUX_KARCH) oldconfig prepare scripts
59 define Kernel/Configure/Default
60 @$(CP) $(LINUX_CONFIG) $(LINUX_DIR)/.config
61 $(call Kernel/Configure/$(KERNEL))
63 define Kernel/Configure
64 $(call Kernel/Configure/Default)
68 define Kernel/CompileModules/Default
69 $(MAKE) -j$(CONFIG_JLEVEL) -C "$(LINUX_DIR)" CROSS_COMPILE="$(KERNEL_CROSS)" CC="$(KERNEL_CC)" ARCH=$(LINUX_KARCH) modules
70 $(MAKE) -C "$(LINUX_DIR)" CROSS_COMPILE="$(KERNEL_CROSS)" CC="$(KERNEL_CC)" ARCH=$(LINUX_KARCH) DEPMOD=true INSTALL_MOD_PATH=$(KERNEL_BUILD_DIR)/modules modules_install
72 define Kernel/CompileModules
73 $(call Kernel/CompileModules/Default)
78 ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y)
79 define Kernel/SetInitramfs
80 mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
81 grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
82 echo 'CONFIG_INITRAMFS_SOURCE="../../root"' >> $(LINUX_DIR)/.config
83 echo 'CONFIG_INITRAMFS_ROOT_UID=0' >> $(LINUX_DIR)/.config
84 echo 'CONFIG_INITRAMFS_ROOT_GID=0' >> $(LINUX_DIR)/.config
85 mkdir -p $(BUILD_DIR)/root/etc/init.d
86 $(CP) ../generic-2.6/files/init $(BUILD_DIR)/root/
89 define Kernel/SetInitramfs
90 mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
91 grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
92 rm -f $(BUILD_DIR)/root/init $(BUILD_DIR)/root/etc/init.d/S00initramfs
93 echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config
97 define Kernel/CompileImage/Default
98 $(call Kernel/SetInitramfs)
99 $(MAKE) -j$(CONFIG_JLEVEL) -C $(LINUX_DIR) CROSS_COMPILE="$(KERNEL_CROSS)" CC="$(KERNEL_CC)" ARCH=$(LINUX_KARCH) $(KERNELNAME)
100 $(KERNEL_CROSS)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S $(LINUX_DIR)/vmlinux $(LINUX_KERNEL)
102 define Kernel/CompileImage
103 $(call Kernel/CompileImage/Default)
106 define Kernel/Clean/Default
107 rm -f $(LINUX_DIR)/.linux-compile
108 rm -f $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/.configured
109 rm -f $(LINUX_KERNEL)
110 $(MAKE) -C $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) clean
114 $(call Kernel/Clean/Default)
118 ifneq ($(LINUX_SITE),)
119 $(DL_DIR)/$(LINUX_SOURCE):
121 $(SCRIPT_DIR)/download.pl $(DL_DIR) $(LINUX_SOURCE) $(LINUX_KERNEL_MD5SUM) $(LINUX_SITE)
124 $(LINUX_DIR)/.prepared: $(DL_DIR)/$(LINUX_SOURCE)
125 -rm -rf $(KERNEL_BUILD_DIR)
126 -mkdir -p $(KERNEL_BUILD_DIR)
127 $(call Kernel/Prepare)
130 $(LINUX_DIR)/.configured: $(LINUX_DIR)/.prepared $(LINUX_CONFIG)
131 $(call Kernel/Configure)
134 $(LINUX_DIR)/.modules: $(LINUX_DIR)/.configured
135 rm -rf $(KERNEL_BUILD_DIR)/modules
136 @rm -f $(BUILD_DIR)/linux
137 ln -sf $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) $(BUILD_DIR)/linux
138 $(call Kernel/CompileModules)
141 $(LINUX_DIR)/.image: $(LINUX_DIR)/.configured FORCE
142 $(call Kernel/CompileImage)
153 download: $(DL_DIR)/$(LINUX_SOURCE)
154 prepare: $(LINUX_DIR)/.configured $(TOPDIR)/.kernel.mk
155 compile: $(LINUX_DIR)/.modules
156 install: $(LINUX_DIR)/.image
159 rm -f $(STAMP_DIR)/.linux-compile
160 rm -rf $(KERNEL_BUILD_DIR)
164 @if [ -f $(LINUX_KERNEL) ]; then \
169 $(TOPDIR)/.kernel.mk: Makefile
170 echo "CONFIG_BOARD:=$(BOARD)" > $@
171 echo "CONFIG_KERNEL:=$(KERNEL)" >> $@
172 echo "CONFIG_LINUX_VERSION:=$(LINUX_VERSION)" >> $@
173 echo "CONFIG_LINUX_RELEASE:=$(LINUX_RELEASE)" >> $@
174 echo "CONFIG_LINUX_KARCH:=$(LINUX_KARCH)" >> $@