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
|
# Makefile for making ELF bootable images for booting on CHRP
# using Open Firmware.
#
# Geert Uytterhoeven September 1997
#
# Based on coffboot by Paul Mackerras
# Simplified for ppc64 by Todd Inglett
#
# NOTE: this code is built for 32 bit in ELF32 format even though
# it packages a 64 bit kernel. We do this to simplify the
# bootloader and increase compatibility with OpenFirmware.
#
# To this end we need to define BOOTCC, etc, as the tools
# needed to build the 32 bit image. These are normally HOSTCC,
# but may be a third compiler if, for example, you are cross
# compiling from an intel box. Once the 64bit ppc gcc is
# stable it will probably simply be a compiler switch to
# compile for 32bit mode.
# To make it easier to setup a cross compiler,
# CROSS32_COMPILE is setup as a prefix just like CROSS_COMPILE
# in the toplevel makefile.
HOSTCC := gcc
BOOTCFLAGS := $(HOSTCFLAGS) -fno-builtin -nostdinc -isystem \
$(shell $(CROSS32CC) -print-file-name=include) -fPIC
BOOTAFLAGS := -D__ASSEMBLY__ $(BOOTCFLAGS) -traditional -nostdinc
OBJCOPYFLAGS := contents,alloc,load,readonly,data
OBJCOPY_COFF_ARGS := -O aixcoff-rs6000 --set-start 0x500000
OBJCOPY_MIB_ARGS := -O aixcoff-rs6000 -R .stab -R .stabstr -R .comment
zlib := inffast.c inflate.c inftrees.c
zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h
zliblinuxheader := zlib.h zconf.h zutil.h
$(addprefix $(obj)/,$(zlib) main.o): $(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader))
#$(addprefix $(obj)/,main.o): $(addprefix $(obj)/,zlib.h)
src-boot-$(CONFIG_PPC_MULTIPLATFORM) := of.c
src-boot := crt0.S string.S stdio.c main.c div64.S $(src-boot-y)
src-boot += $(zlib)
src-boot := $(addprefix $(obj)/, $(src-boot))
obj-boot := $(addsuffix .o, $(basename $(src-boot)))
ifeq ($(call cc-option-yn, -fstack-protector),y)
BOOTCFLAGS += -fno-stack-protector
endif
BOOTCFLAGS += -I$(obj) -I$(srctree)/$(obj)
quiet_cmd_copy_zlib = COPY $@
cmd_copy_zlib = sed "s@__attribute_used__@@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
quiet_cmd_copy_zlibheader = COPY $@
cmd_copy_zlibheader = sed "s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
# stddef.h for NULL
quiet_cmd_copy_zliblinuxheader = COPY $@
cmd_copy_zliblinuxheader = sed "s@<linux/string.h>@\"string.h\"@;s@<linux/kernel.h>@<stddef.h>@;s@<linux/\([^>]\+\).*@\"\1\"@" $< > $@
$(addprefix $(obj)/,$(zlib)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
$(call cmd,copy_zlib)
$(addprefix $(obj)/,$(zlibheader)): $(obj)/%: $(srctree)/lib/zlib_inflate/%
$(call cmd,copy_zlibheader)
$(addprefix $(obj)/,$(zliblinuxheader)): $(obj)/%: $(srctree)/include/linux/%
$(call cmd,copy_zliblinuxheader)
clean-files := $(zlib) $(zlibheader) $(zliblinuxheader)
quiet_cmd_bootcc = BOOTCC $@
cmd_bootcc = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTCFLAGS) -c -o $@ $<
quiet_cmd_bootas = BOOTAS $@
cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $<
quiet_cmd_bootld = BOOTLD $@
cmd_bootld = $(CROSS32LD) -T $(srctree)/$(src)/$(3) -o $@ $(2)
$(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c
$(call if_changed_dep,bootcc)
$(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S
$(call if_changed_dep,bootas)
#-----------------------------------------------------------
# ELF sections within the zImage bootloader/wrapper
#-----------------------------------------------------------
required := vmlinux.strip
initrd := initrd
obj-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.o, $(section)))
src-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.c, $(section)))
gz-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.gz, $(section)))
hostprogs-y := addnote addRamDisk hack-coff
targets += zImage.vmode zImage.initrd.vmode zImage zImage.initrd \
zImage.coff zImage.initrd.coff miboot.image miboot.initrd.image \
$(patsubst $(obj)/%,%, $(call obj-sec, $(required) $(initrd))) \
$(patsubst $(obj)/%,%, $(call src-sec, $(required) $(initrd))) \
$(patsubst $(obj)/%,%, $(call gz-sec, $(required) $(initrd))) \
vmlinux.initrd dummy.o
extra-y := initrd.o
quiet_cmd_ramdisk = RAMDISK $@
cmd_ramdisk = $(obj)/addRamDisk $(obj)/ramdisk.image.gz $< $@
quiet_cmd_stripvm = STRIP $@
cmd_stripvm = $(STRIP) -s -R .comment $< -o $@
vmlinux.strip: vmlinux
$(call if_changed,stripvm)
$(obj)/vmlinux.initrd: vmlinux.strip $(obj)/addRamDisk $(obj)/ramdisk.image.gz
$(call if_changed,ramdisk)
quiet_cmd_addsection = ADDSEC $@
cmd_addsection = $(CROSS32OBJCOPY) $@ \
--add-section=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $@))=$(patsubst %.o,%.gz, $@) \
--set-section-flags=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $@))=$(OBJCOPYFLAGS)
quiet_cmd_addnote = ADDNOTE $@
cmd_addnote = $(obj)/addnote $@
quiet_cmd_gen-miboot = GEN $@
cmd_gen-miboot = $(OBJCOPY) $(OBJCOPY_MIB_ARGS) \
--add-section=$1=$(word 2, $^) $< $@
quiet_cmd_gencoff = COFF $@
cmd_gencoff = $(OBJCOPY) $(OBJCOPY_COFF_ARGS) $@ && \
$(obj)/hack-coff $@
$(call gz-sec, $(required)): $(obj)/kernel-%.gz: %
$(call if_changed,gzip)
$(obj)/kernel-initrd.gz: $(obj)/ramdisk.image.gz
cp -f $(obj)/ramdisk.image.gz $@
$(call src-sec, $(required) $(initrd)): $(obj)/kernel-%.c: $(obj)/kernel-%.gz
@touch $@
$(call obj-sec, $(required) $(initrd)): $(obj)/kernel-%.o: $(obj)/kernel-%.c
$(call if_changed_dep,bootcc)
$(call cmd,addsection)
$(obj)/zImage.vmode $(obj)/zImage.coff: obj-boot += $(call obj-sec, $(required))
$(obj)/zImage.vmode: $(call obj-sec, $(required)) $(obj-boot) $(srctree)/$(src)/zImage.lds
$(call cmd,bootld,$(obj-boot),zImage.lds)
$(obj)/zImage.initrd.vmode $(obj)/zImage.initrd.coff: obj-boot += $(call obj-sec, $(required) $(initrd))
$(obj)/zImage.initrd.vmode: $(call obj-sec, $(required) $(initrd)) $(obj-boot) $(srctree)/$(src)/zImage.lds
$(call cmd,bootld,$(obj-boot),zImage.lds)
# For 32-bit powermacs, build the COFF and miboot images
# as well as the ELF images.
coffimage-$(CONFIG_PPC_PMAC)-$(CONFIG_PPC32) := $(obj)/zImage.coff
coffrdimg-$(CONFIG_PPC_PMAC)-$(CONFIG_PPC32) := $(obj)/zImage.initrd.coff
mibootimg-$(CONFIG_PPC_PMAC)-$(CONFIG_PPC32) := $(obj)/miboot.image
mibrdimg-$(CONFIG_PPC_PMAC)-$(CONFIG_PPC32) := $(obj)/miboot.initrd.image
$(obj)/zImage: $(obj)/zImage.vmode $(obj)/addnote $(coffimage-y-y) \
$(mibootimg-y-y)
@cp -f $< $@
$(call if_changed,addnote)
$(obj)/zImage.initrd: $(obj)/zImage.initrd.vmode $(obj)/addnote \
$(coffrdimg-y-y) $(mibrdimg-y-y)
@cp -f $< $@
$(call if_changed,addnote)
$(obj)/zImage.coff: $(call obj-sec, $(required)) $(obj-boot) \
$(srctree)/$(src)/zImage.coff.lds $(obj)/hack-coff
$(call cmd,bootld,$(obj-boot),zImage.coff.lds)
$(call cmd,gencoff)
$(obj)/zImage.initrd.coff: $(call obj-sec, $(required) $(initrd)) $(obj-boot) \
$(srctree)/$(src)/zImage.coff.lds $(obj)/hack-coff
$(call cmd,bootld,$(obj-boot),zImage.coff.lds)
$(call cmd,gencoff)
$(obj)/miboot.image: $(obj)/dummy.o $(obj)/vmlinux.gz
$(call cmd,gen-miboot,image)
$(obj)/miboot.initrd.image: $(obj)/miboot.image $(images)/ramdisk.image.gz
$(call cmd,gen-miboot,initrd)
#-----------------------------------------------------------
# build u-boot images
#-----------------------------------------------------------
quiet_cmd_mygzip = GZIP $@
cmd_mygzip = gzip -f -9 < $< > $@.$$$$ && mv $@.$$$$ $@
quiet_cmd_objbin = OBJCOPY $@
cmd_objbin = $(OBJCOPY) -O binary $< $@
quiet_cmd_uimage = UIMAGE $@
cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A ppc -O linux -T kernel \
-C gzip -a 00000000 -e 00000000 -n 'Linux-$(KERNELRELEASE)' \
-d $< $@
MKIMAGE := $(srctree)/scripts/mkuboot.sh
targets += uImage
extra-y += vmlinux.bin vmlinux.gz
$(obj)/vmlinux.bin: vmlinux FORCE
$(call if_changed,objbin)
$(obj)/vmlinux.gz: $(obj)/vmlinux.bin FORCE
$(call if_changed,mygzip)
$(obj)/uImage: $(obj)/vmlinux.gz
$(Q)rm -f $@
$(call cmd,uimage)
@echo -n ' Image: $@ '
@if [ -f $@ ]; then echo 'is ready' ; else echo 'not made'; fi
install: $(CONFIGURE) $(BOOTIMAGE)
sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" "$(BOOTIMAGE)"
clean-files += $(addprefix $(objtree)/, $(obj-boot) vmlinux.strip)
|
