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 (,$(findstring avr32,$(BOARD))) |
16 | KERNELNAME="uImage" |
17 | endif |
18 | |
19 | KERNEL_MAKEOPTS := -C $(LINUX_DIR) \ |
20 | CROSS_COMPILE="$(KERNEL_CROSS)" \ |
21 | ARCH="$(LINUX_KARCH)" \ |
22 | KBUILD_HAVE_NLS=no \ |
23 | CONFIG_SHELL="$(BASH)" |
24 | |
25 | ifdef CONFIG_STRIP_KERNEL_EXPORTS |
26 | KERNEL_MAKEOPTS += \ |
27 | EXTRA_LDSFLAGS="-I$(KERNEL_BUILD_DIR) -include symtab.h" |
28 | endif |
29 | |
30 | INITRAMFS_EXTRA_FILES ?= $(GENERIC_PLATFORM_DIR)/image/initramfs-base-files.txt |
31 | |
32 | ifneq (,$(KERNEL_CC)) |
33 | KERNEL_MAKEOPTS += CC="$(KERNEL_CC)" |
34 | endif |
35 | |
36 | # defined in quilt.mk |
37 | Kernel/Patch:=$(Kernel/Patch/Default) |
38 | ifeq ($(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)),"") |
47 | define 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 |
55 | endif |
56 | else |
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) $(LINUX_DIR) |
63 | endef |
64 | endif |
65 | |
66 | ifeq ($(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 |
88 | endif |
89 | |
90 | define 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) $(KERNEL_MAKEOPTS) dep |
94 | endef |
95 | define Kernel/Configure/2.6 |
96 | -$(_SINGLE)$(MAKE) $(KERNEL_MAKEOPTS) oldconfig prepare scripts |
97 | endef |
98 | define 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 |
112 | endef |
113 | |
114 | define Kernel/CompileModules/Default |
115 | rm -f $(LINUX_DIR)/vmlinux $(LINUX_DIR)/System.map |
116 | +$(MAKE) $(KERNEL_MAKEOPTS) modules |
117 | endef |
118 | |
119 | OBJCOPY_STRIP = -R .reginfo -R .notes -R .note -R .comment -R .mdebug -R .note.gnu.build-id |
120 | |
121 | define 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 |
126 | endef |
127 | |
128 | define 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 |
132 | endef |
133 | |
134 | |
135 | |