1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
#
# Copyright (C) 2006 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
KERNEL_BUILD:=1
include $(INCLUDE_DIR)/prereq.mk
-include ./config
ifneq ($(CONFIG_ATM),)
FEATURES += atm
endif
ifneq ($(CONFIG_PCI),)
FEATURES += pci
endif
ifneq ($(CONFIG_USB),)
FEATURES += usb
endif
ifneq ($(CONFIG_PCMCIA),)
FEATURES += pcmcia
endif
# remove duplicates
FEATURES:=$(sort $(FEATURES))
# For target profile selection - the default set
DEFAULT_PACKAGES:=base-files libgcc uclibc bridge busybox dnsmasq dropbear iptables mtd ppp ppp-mod-pppoe mtd
ifeq ($(DUMP),1)
all: dumpinfo
else
all: compile
endif
include $(INCLUDE_DIR)/kernel-version.mk
include $(INCLUDE_DIR)/host.mk
include $(INCLUDE_DIR)/kernel.mk
LINUX_CONFIG:=./config
ifneq (,$(findstring uml,$(BOARD)))
LINUX_KARCH:=um
else
LINUX_KARCH:=$(shell echo $(ARCH) | sed -e 's/i[3-9]86/i386/' \
-e 's/mipsel/mips/' \
-e 's/mipseb/mips/' \
-e 's/powerpc/ppc/' \
-e 's/sh[234]/sh/' \
-e 's/armeb/arm/' \
)
endif
KERNELNAME=
ifneq (,$(findstring x86,$(BOARD)))
KERNELNAME="bzImage"
endif
ifneq (,$(findstring rdc,$(BOARD)))
KERNELNAME="bzImage"
endif
ifneq (,$(findstring ppc,$(BOARD)))
KERNELNAME="uImage"
endif
define Kernel/Prepare/Default
bzcat $(DL_DIR)/$(LINUX_SOURCE) | tar -C $(KERNEL_BUILD_DIR) $(TAR_OPTIONS)
[ -d $(GENERIC_PLATFORM_DIR)/patches ] && $(PATCH) $(LINUX_DIR) $(GENERIC_PLATFORM_DIR)/patches
[ -d ./patches ] && $(PATCH) $(LINUX_DIR) ./patches
endef
define Kernel/Prepare
$(call Kernel/Prepare/Default)
endef
KERNEL_MAKEOPTS := -C $(LINUX_DIR) \
CROSS_COMPILE="$(KERNEL_CROSS)" \
ARCH="$(LINUX_KARCH)" \
CONFIG_SHELL="$(BASH)"
define Kernel/Configure/2.4
$(SED) "s,\-mcpu=,\-mtune=,g;" $(LINUX_DIR)/arch/mips/Makefile
$(MAKE) $(KERNEL_MAKEOPTS) CC="$(KERNEL_CC)" oldconfig include/linux/compile.h include/linux/version.h
$(MAKE) $(KERNEL_MAKEOPTS) dep
endef
define Kernel/Configure/2.6
$(MAKE) $(KERNEL_MAKEOPTS) CC="$(KERNEL_CC)" oldconfig prepare scripts
endef
define Kernel/Configure/Default
@$(CP) $(LINUX_CONFIG) $(LINUX_DIR)/.config
$(call Kernel/Configure/$(KERNEL))
endef
define Kernel/Configure
$(call Kernel/Configure/Default)
endef
define Kernel/CompileModules/Default
$(MAKE) -j$(CONFIG_JLEVEL) $(KERNEL_MAKEOPTS) CC="$(KERNEL_CC)" modules
$(MAKE) $(KERNEL_MAKEOPTS) CC="$(KERNEL_CC)" DEPMOD=true INSTALL_MOD_PATH=$(KERNEL_BUILD_DIR)/modules modules_install
endef
define Kernel/CompileModules
$(call Kernel/CompileModules/Default)
endef
ifeq ($(KERNEL),2.6)
ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y)
define Kernel/SetInitramfs
mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
echo 'CONFIG_INITRAMFS_SOURCE="../../root"' >> $(LINUX_DIR)/.config
echo 'CONFIG_INITRAMFS_ROOT_UID=0' >> $(LINUX_DIR)/.config
echo 'CONFIG_INITRAMFS_ROOT_GID=0' >> $(LINUX_DIR)/.config
mkdir -p $(BUILD_DIR)/root/etc/init.d
$(CP) $(GENERIC_PLATFORM_DIR)/files/init $(BUILD_DIR)/root/
endef
else
define Kernel/SetInitramfs
mv $(LINUX_DIR)/.config $(LINUX_DIR)/.config.old
grep -v INITRAMFS $(LINUX_DIR)/.config.old > $(LINUX_DIR)/.config
rm -f $(BUILD_DIR)/root/init $(BUILD_DIR)/root/etc/init.d/S00initramfs
echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config
endef
endif
endif
define Kernel/CompileImage/Default
$(call Kernel/SetInitramfs)
$(MAKE) -j$(CONFIG_JLEVEL) $(KERNEL_MAKEOPTS) CC="$(KERNEL_CC)" $(KERNELNAME)
$(KERNEL_CROSS)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S $(LINUX_DIR)/vmlinux $(LINUX_KERNEL)
endef
define Kernel/CompileImage
$(call Kernel/CompileImage/Default)
endef
define Kernel/Clean/Default
rm -f $(LINUX_DIR)/.linux-compile
rm -f $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)/.configured
rm -f $(LINUX_KERNEL)
$(MAKE) -C $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) clean
endef
define Kernel/Clean
$(call Kernel/Clean/Default)
endef
define BuildKernel
ifneq ($(LINUX_SITE),)
$(DL_DIR)/$(LINUX_SOURCE):
-mkdir -p $(DL_DIR)
$(SCRIPT_DIR)/download.pl $(DL_DIR) $(LINUX_SOURCE) $(LINUX_KERNEL_MD5SUM) $(LINUX_SITE)
endif
$(LINUX_DIR)/.prepared: $(DL_DIR)/$(LINUX_SOURCE)
-rm -rf $(KERNEL_BUILD_DIR)
-mkdir -p $(KERNEL_BUILD_DIR)
$(call Kernel/Prepare)
touch $$@
$(LINUX_DIR)/.configured: $(LINUX_DIR)/.prepared $(LINUX_CONFIG)
$(call Kernel/Configure)
touch $$@
$(LINUX_DIR)/.modules: $(LINUX_DIR)/.configured
rm -rf $(KERNEL_BUILD_DIR)/modules
@rm -f $(BUILD_DIR)/linux
ln -sf $(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION) $(BUILD_DIR)/linux
$(call Kernel/CompileModules)
touch $$@
$(LINUX_DIR)/.image: $(LINUX_DIR)/.configured FORCE
$(call Kernel/CompileImage)
touch $$@
mostlyclean: FORCE
$(call Kernel/Clean)
ifeq ($(DUMP),1)
dumpinfo:
@echo 'Target: $(BOARD)-$(KERNEL)'
@echo 'Target-Name: $(BOARDNAME) [$(KERNEL)]'
@echo 'Target-Path: $(subst $(TOPDIR)/,,$(PWD))'
@echo 'Target-Arch: $(ARCH)'
@echo 'Target-Features: $(FEATURES)'
@echo 'Linux-Version: $(LINUX_VERSION)'
@echo 'Linux-Release: $(LINUX_RELEASE)'
@echo 'Linux-Kernel-Arch: $(LINUX_KARCH)'
@echo 'Target-Description:'
@getvar $(call shvar,Target/Description)
@echo '@@'
@echo 'Default-Packages: $(DEFAULT_PACKAGES)'
ifneq ($(DUMPINFO),)
@$(DUMPINFO)
endif
endif
define BuildKernel
endef
endef
define Profile/Default
NAME:=
PACKAGES:=
endef
define Profile
$(eval $(call Profile/Default))
$(eval $(call Profile/$(1)))
$(eval $(call shexport,Profile/$(1)/Description))
DUMPINFO += \
echo "Target-Profile: $(1)"; \
echo "Target-Profile-Name: $(NAME)"; \
echo "Target-Profile-Packages: $(PACKAGES)"; \
echo "Target-Profile-Description:"; \
getvar "$(call shvar,Profile/$(1)/Description)"; \
echo "@@"; \
echo;
endef
$(eval $(call shexport,Target/Description))
download: $(DL_DIR)/$(LINUX_SOURCE)
prepare: $(LINUX_DIR)/.configured $(TMP_DIR)/.kernel.mk
compile: $(LINUX_DIR)/.modules
install: $(LINUX_DIR)/.image
clean: FORCE
rm -f $(STAMP_DIR)/.linux-compile
rm -rf $(KERNEL_BUILD_DIR)
rebuild: FORCE
@$(MAKE) mostlyclean
@if [ -f $(LINUX_KERNEL) ]; then \
$(MAKE) clean; \
fi
@$(MAKE) compile
|
