Root/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
8KERNELNAME=
9ifneq (,$(findstring x86,$(BOARD)))
10  KERNELNAME="bzImage"
11endif
12ifneq (,$(findstring rdc,$(BOARD)))
13  KERNELNAME="bzImage"
14endif
15ifneq (,$(findstring avr32,$(BOARD)))
16  KERNELNAME="uImage"
17endif
18
19KERNEL_MAKEOPTS := -C $(LINUX_DIR) \
20    CROSS_COMPILE="$(KERNEL_CROSS)" \
21    ARCH="$(LINUX_KARCH)" \
22    KBUILD_HAVE_NLS=no \
23    CONFIG_SHELL="$(BASH)"
24
25ifdef CONFIG_STRIP_KERNEL_EXPORTS
26  KERNEL_MAKEOPTS += \
27    EXTRA_LDSFLAGS="-I$(KERNEL_BUILD_DIR) -include symtab.h"
28endif
29
30INITRAMFS_EXTRA_FILES ?= $(GENERIC_PLATFORM_DIR)/image/initramfs-base-files.txt
31
32ifneq (,$(KERNEL_CC))
33  KERNEL_MAKEOPTS += CC="$(KERNEL_CC)"
34endif
35
36# defined in quilt.mk
37Kernel/Patch:=$(Kernel/Patch/Default)
38ifeq ($(strip $(CONFIG_EXTERNAL_KERNEL_TREE)),"")
39  ifeq ($(strip $(CONFIG_KERNEL_GIT_CLONE_URI)),"")
40    define Kernel/Prepare/Default
41    bzcat $(DL_DIR)/$(LINUX_SOURCE) | $(TAR) -C $(KERNEL_BUILD_DIR) $(TAR_OPTIONS)
42    $(Kernel/Patch)
43    touch $(LINUX_DIR)/.quilt_used
44    endef
45  else
46    ifeq ($(strip $(CONFIG_KERNEL_GIT_LOCAL_REPOSITORY)),"")
47define Kernel/Prepare/Default
48    git clone $(CONFIG_KERNEL_GIT_CLONE_URI) $(LINUX_DIR)
49    endef
50  else
51    define Kernel/Prepare/Default
52    git clone --reference $(CONFIG_KERNEL_GIT_LOCAL_REPOSITORY) $(CONFIG_KERNEL_GIT_CLONE_URI) $(LINUX_DIR)
53    endef
54  endif
55endif
56else
57  define Kernel/Prepare/Default
58    mkdir -p $(KERNEL_BUILD_DIR)
59    if [ -d $(LINUX_DIR) ]; then \
60        rmdir $(LINUX_DIR); \
61    fi
62    ln -s $(CONFIG_EXTERNAL_KERNEL_TREE) $(LINUX_DIR)
63  endef
64endif
65
66ifeq ($(KERNEL),2.6)
67  ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y)
68    define Kernel/SetInitramfs
69        mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
70        grep -v -e INITRAMFS -e CONFIG_RD_ -e CONFIG_BLK_DEV_INITRD $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
71        echo 'CONFIG_BLK_DEV_INITRD=y' >> $(LINUX_DIR)/.config
72        echo 'CONFIG_INITRAMFS_SOURCE="$(strip $(TARGET_DIR) $(INITRAMFS_EXTRA_FILES))"' >> $(LINUX_DIR)/.config
73        echo 'CONFIG_INITRAMFS_ROOT_UID=$(shell id -u)' >> $(LINUX_DIR)/.config
74        echo 'CONFIG_INITRAMFS_ROOT_GID=$(shell id -g)' >> $(LINUX_DIR)/.config
75        echo "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_NONE),CONFIG_INITRAMFS_COMPRESSION_NONE=y,# CONFIG_INITRAMFS_COMPRESSION_NONE is not set)" >> $(LINUX_DIR)/.config
76        echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_GZIP),CONFIG_INITRAMFS_COMPRESSION_GZIP=y\nCONFIG_RD_GZIP=y,# CONFIG_INITRAMFS_COMPRESSION_GZIP is not set\n# CONFIG_RD_GZIP is not set)" >> $(LINUX_DIR)/.config
77        echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_BZIP2),CONFIG_INITRAMFS_COMPRESSION_BZIP2=y\nCONFIG_RD_BZIP2=y,# CONFIG_INITRAMFS_COMPRESSION_BZIP2 is not set\n# CONFIG_RD_BZIP2 is not set)" >> $(LINUX_DIR)/.config
78        echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZMA),CONFIG_INITRAMFS_COMPRESSION_LZMA=y\nCONFIG_RD_LZMA=y,# CONFIG_INITRAMFS_COMPRESSION_LZMA is not set\n# CONFIG_RD_LZMA is not set)" >> $(LINUX_DIR)/.config
79        echo -e "$(if $(CONFIG_TARGET_INITRAMFS_COMPRESSION_LZO),CONFIG_INITRAMFS_COMPRESSION_LZO=y\nCONFIG_RD_LZO=y,# CONFIG_INITRAMFS_COMPRESSION_LZO is not set\n# CONFIG_RD_LZO is not set)" >> $(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        echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config
86    endef
87  endif
88endif
89
90define Kernel/Configure/2.4
91    $(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile
92    $(_SINGLE)$(MAKE) $(KERNEL_MAKEOPTS) oldconfig include/linux/compile.h include/linux/version.h
93    $(_SINGLE)$(MAKE) $(KERNEL_MAKEOPTS) dep
94endef
95define Kernel/Configure/2.6
96    -$(_SINGLE)$(MAKE) $(KERNEL_MAKEOPTS) oldconfig prepare scripts
97endef
98define Kernel/Configure/Default
99    $(LINUX_CONFCMD) > $(LINUX_DIR)/.config.target
100# copy CONFIG_KERNEL_* settings over to .config.target
101    awk '/^(#[[:space:]]+)?CONFIG_KERNEL/{sub("CONFIG_KERNEL_","CONFIG_");print}' $(TOPDIR)/.config >> $(LINUX_DIR)/.config.target
102    echo "# CONFIG_KALLSYMS_EXTRA_PASS is not set" >> $(LINUX_DIR)/.config.target
103    echo "# CONFIG_KALLSYMS_ALL is not set" >> $(LINUX_DIR)/.config.target
104    echo "# CONFIG_KPROBES is not set" >> $(LINUX_DIR)/.config.target
105    $(SED) 's,.*CONFIG_AEABI.*,$(if $(CONFIG_EABI_SUPPORT),CONFIG_AEABI=y,# CONFIG_AEABI is not set),' $(LINUX_DIR)/.config.target
106    $(if $(CONFIG_EABI_SUPPORT),echo '# CONFIG_OABI_COMPAT is not set' >> $(LINUX_DIR)/.config.target)
107    $(SCRIPT_DIR)/metadata.pl kconfig $(TMP_DIR)/.packageinfo $(TOPDIR)/.config > $(LINUX_DIR)/.config.override
108    $(SCRIPT_DIR)/kconfig.pl 'm+' '+' $(LINUX_DIR)/.config.target /dev/null $(LINUX_DIR)/.config.override > $(LINUX_DIR)/.config
109    $(call Kernel/SetInitramfs)
110    $(call Kernel/Configure/$(KERNEL))
111    rm -rf $(KERNEL_BUILD_DIR)/modules
112endef
113
114define Kernel/CompileModules/Default
115    rm -f $(LINUX_DIR)/vmlinux $(LINUX_DIR)/System.map
116    +$(MAKE) $(KERNEL_MAKEOPTS) modules
117endef
118
119OBJCOPY_STRIP = -R .reginfo -R .notes -R .note -R .comment -R .mdebug -R .note.gnu.build-id
120
121define Kernel/CompileImage/Default
122    $(if $(CONFIG_TARGET_ROOTFS_INITRAMFS),,rm -f $(TARGET_DIR)/init)
123    +$(MAKE) $(KERNEL_MAKEOPTS) $(KERNELNAME)
124    $(KERNEL_CROSS)objcopy -O binary $(OBJCOPY_STRIP) -S $(LINUX_DIR)/vmlinux $(LINUX_KERNEL)
125    $(KERNEL_CROSS)objcopy $(OBJCOPY_STRIP) -S $(LINUX_DIR)/vmlinux $(KERNEL_BUILD_DIR)/vmlinux.elf
126endef
127
128define Kernel/Clean/Default
129    rm -f $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/.configured
130    rm -f $(LINUX_KERNEL)
131    $(_SINGLE)$(MAKE) -C $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) clean
132endef
133
134
135

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