port generic and ixp4xx kernel patches to 2.6.27 (compiles except for iptables, but...
[openwrt/openwrt.git] / 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 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 $(_SINGLE)$(MAKE) $(KERNEL_MAKEOPTS) oldconfig include/linux/compile.h include/linux/version.h
73 $(_SINGLE)$(MAKE) $(KERNEL_MAKEOPTS) dep
74 endef
75 define Kernel/Configure/2.6
76 -$(_SINGLE)$(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 $(_SINGLE)$(MAKE) -C $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) clean
103 endef
104
105