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2bf11819 PM |
1 | #!/bin/sh |
2 | ||
3 | # Copyright (C) 2006 Paul Mackerras, IBM Corporation <paulus@samba.org> | |
4 | # This program may be used under the terms of version 2 of the GNU | |
5 | # General Public License. | |
6 | ||
7 | # This script takes a kernel binary and optionally an initrd image | |
8 | # and/or a device-tree blob, and creates a bootable zImage for a | |
9 | # given platform. | |
10 | ||
11 | # Options: | |
12 | # -o zImage specify output file | |
13 | # -p platform specify platform (links in $platform.o) | |
14 | # -i initrd specify initrd file | |
15 | # -d devtree specify device-tree blob | |
16 | # -s tree.dts specify device-tree source file (needs dtc installed) | |
17 | # -c cache $kernel.strip.gz (use if present & newer, else make) | |
18 | # -C prefix specify command prefix for cross-building tools | |
19 | # (strip, objcopy, ld) | |
20 | # -D dir specify directory containing data files used by script | |
21 | # (default ./arch/powerpc/boot) | |
22 | # -W dir specify working directory for temporary files (default .) | |
23 | ||
d4740373 GL |
24 | # Stop execution if any command fails |
25 | set -e | |
26 | ||
7f66c1fd GL |
27 | # Allow for verbose output |
28 | if [ "$V" = 1 ]; then | |
29 | set -x | |
30 | fi | |
31 | ||
2bf11819 PM |
32 | # defaults |
33 | kernel= | |
34 | ofile=zImage | |
35 | platform=of | |
36 | initrd= | |
37 | dtb= | |
38 | dts= | |
39 | cacheit= | |
11c146cc | 40 | binary= |
a9903811 | 41 | gzip=.gz |
2bf11819 PM |
42 | |
43 | # cross-compilation prefix | |
44 | CROSS= | |
45 | ||
46 | # directory for object and other files used by this script | |
47 | object=arch/powerpc/boot | |
5c539ee3 | 48 | objbin=$object |
2bf11819 PM |
49 | |
50 | # directory for working files | |
51 | tmpdir=. | |
52 | ||
53 | usage() { | |
54 | echo 'Usage: wrapper [-o output] [-p platform] [-i initrd]' >&2 | |
55 | echo ' [-d devtree] [-s tree.dts] [-c] [-C cross-prefix]' >&2 | |
a9903811 | 56 | echo ' [-D datadir] [-W workingdir] [--no-gzip] [vmlinux]' >&2 |
2bf11819 PM |
57 | exit 1 |
58 | } | |
59 | ||
60 | while [ "$#" -gt 0 ]; do | |
61 | case "$1" in | |
62 | -o) | |
63 | shift | |
64 | [ "$#" -gt 0 ] || usage | |
65 | ofile="$1" | |
66 | ;; | |
67 | -p) | |
68 | shift | |
69 | [ "$#" -gt 0 ] || usage | |
70 | platform="$1" | |
71 | ;; | |
72 | -i) | |
73 | shift | |
74 | [ "$#" -gt 0 ] || usage | |
75 | initrd="$1" | |
76 | ;; | |
77 | -d) | |
78 | shift | |
79 | [ "$#" -gt 0 ] || usage | |
80 | dtb="$1" | |
81 | ;; | |
82 | -s) | |
83 | shift | |
84 | [ "$#" -gt 0 ] || usage | |
85 | dts="$1" | |
86 | ;; | |
87 | -c) | |
88 | cacheit=y | |
89 | ;; | |
90 | -C) | |
91 | shift | |
92 | [ "$#" -gt 0 ] || usage | |
93 | CROSS="$1" | |
94 | ;; | |
95 | -D) | |
96 | shift | |
97 | [ "$#" -gt 0 ] || usage | |
98 | object="$1" | |
5c539ee3 | 99 | objbin="$1" |
2bf11819 PM |
100 | ;; |
101 | -W) | |
102 | shift | |
103 | [ "$#" -gt 0 ] || usage | |
104 | tmpdir="$1" | |
105 | ;; | |
a9903811 SW |
106 | --no-gzip) |
107 | gzip= | |
108 | ;; | |
2bf11819 PM |
109 | -?) |
110 | usage | |
111 | ;; | |
112 | *) | |
113 | [ -z "$kernel" ] || usage | |
114 | kernel="$1" | |
115 | ;; | |
116 | esac | |
117 | shift | |
118 | done | |
119 | ||
120 | if [ -n "$dts" ]; then | |
701172d1 DW |
121 | if [ ! -r "$dts" -a -r "$object/dts/$dts" ]; then |
122 | dts="$object/dts/$dts" | |
123 | fi | |
2bf11819 PM |
124 | if [ -z "$dtb" ]; then |
125 | dtb="$platform.dtb" | |
126 | fi | |
e2dc87a1 | 127 | $object/dtc -O dtb -o "$dtb" -b 0 "$dts" |
2bf11819 PM |
128 | fi |
129 | ||
130 | if [ -z "$kernel" ]; then | |
131 | kernel=vmlinux | |
132 | fi | |
133 | ||
134 | platformo=$object/"$platform".o | |
135 | lds=$object/zImage.lds | |
136 | ext=strip | |
137 | objflags=-S | |
138 | tmp=$tmpdir/zImage.$$.o | |
139 | ksection=.kernel:vmlinux.strip | |
140 | isection=.kernel:initrd | |
141 | ||
142 | case "$platform" in | |
143 | pmac|pseries|chrp) | |
144 | platformo=$object/of.o | |
145 | ;; | |
627aa944 | 146 | coff) |
2bf11819 PM |
147 | platformo=$object/of.o |
148 | lds=$object/zImage.coff.lds | |
149 | ;; | |
150 | miboot|uboot) | |
151 | # miboot and U-boot want just the bare bits, not an ELF binary | |
152 | ext=bin | |
153 | objflags="-O binary" | |
154 | tmp="$ofile" | |
155 | ksection=image | |
156 | isection=initrd | |
157 | ;; | |
0fdd717e | 158 | cuboot*) |
11c146cc | 159 | binary=y |
0fdd717e SW |
160 | gzip= |
161 | ;; | |
bafdb645 GL |
162 | ps3) |
163 | platformo="$object/ps3-head.o $object/ps3-hvcall.o $object/ps3.o" | |
164 | lds=$object/zImage.ps3.lds | |
165 | gzip= | |
166 | ext=bin | |
167 | objflags="-O binary --set-section-flags=.bss=contents,alloc,load,data" | |
168 | ksection=.kernel:vmlinux.bin | |
169 | isection=.kernel:initrd | |
170 | ;; | |
0dde1a1d | 171 | ep88xc|ep405|redboot*|ep8248e) |
11c146cc SW |
172 | platformo="$object/fixed-head.o $object/$platform.o" |
173 | binary=y | |
174 | ;; | |
2bf11819 PM |
175 | esac |
176 | ||
177 | vmz="$tmpdir/`basename \"$kernel\"`.$ext" | |
1383a34f | 178 | if [ -z "$cacheit" -o ! -f "$vmz$gzip" -o "$vmz$gzip" -ot "$kernel" ]; then |
2bf11819 | 179 | ${CROSS}objcopy $objflags "$kernel" "$vmz.$$" |
a9903811 SW |
180 | |
181 | if [ -n "$gzip" ]; then | |
182 | gzip -f -9 "$vmz.$$" | |
183 | fi | |
184 | ||
2bf11819 | 185 | if [ -n "$cacheit" ]; then |
a9903811 | 186 | mv -f "$vmz.$$$gzip" "$vmz$gzip" |
2bf11819 PM |
187 | else |
188 | vmz="$vmz.$$" | |
189 | fi | |
190 | fi | |
191 | ||
a9903811 SW |
192 | vmz="$vmz$gzip" |
193 | ||
a6afacb6 DG |
194 | # Extract kernel version information, some platforms want to include |
195 | # it in the image header | |
196 | version=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \ | |
197 | cut -d' ' -f3` | |
198 | if [ -n "$version" ]; then | |
199 | uboot_version="-n Linux-$version" | |
200 | fi | |
0fdd717e SW |
201 | |
202 | case "$platform" in | |
203 | uboot) | |
204 | rm -f "$ofile" | |
2bf11819 | 205 | mkimage -A ppc -O linux -T kernel -C gzip -a 00000000 -e 00000000 \ |
a6afacb6 | 206 | $uboot_version -d "$vmz" "$ofile" |
2bf11819 | 207 | if [ -z "$cacheit" ]; then |
a9903811 | 208 | rm -f "$vmz" |
2bf11819 PM |
209 | fi |
210 | exit 0 | |
211 | ;; | |
212 | esac | |
213 | ||
214 | addsec() { | |
215 | ${CROSS}objcopy $4 $1 \ | |
216 | --add-section=$3="$2" \ | |
217 | --set-section-flags=$3=contents,alloc,load,readonly,data | |
218 | } | |
219 | ||
a9903811 | 220 | addsec $tmp "$vmz" $ksection $object/empty.o |
2bf11819 | 221 | if [ -z "$cacheit" ]; then |
a9903811 | 222 | rm -f "$vmz" |
2bf11819 PM |
223 | fi |
224 | ||
225 | if [ -n "$initrd" ]; then | |
c888554b | 226 | addsec $tmp "$initrd" $isection |
2bf11819 PM |
227 | fi |
228 | ||
229 | if [ -n "$dtb" ]; then | |
c888554b | 230 | addsec $tmp "$dtb" .kernel:dtb |
e9c4b4bd MG |
231 | if [ -n "$dts" ]; then |
232 | rm $dtb | |
233 | fi | |
2bf11819 PM |
234 | fi |
235 | ||
236 | if [ "$platform" != "miboot" ]; then | |
237 | ${CROSS}ld -m elf32ppc -T $lds -o "$ofile" \ | |
cd197ffc | 238 | $platformo $tmp $object/wrapper.a |
2bf11819 PM |
239 | rm $tmp |
240 | fi | |
241 | ||
a6afacb6 DG |
242 | # Some platforms need the zImage's entry point and base address |
243 | base=0x`${CROSS}nm "$ofile" | grep ' _start$' | cut -d' ' -f1` | |
244 | entry=`${CROSS}objdump -f "$ofile" | grep '^start address ' | cut -d' ' -f3` | |
245 | ||
11c146cc SW |
246 | if [ -n "$binary" ]; then |
247 | mv "$ofile" "$ofile".elf | |
aeb4552f | 248 | ${CROSS}objcopy -O binary "$ofile".elf "$ofile" |
11c146cc SW |
249 | fi |
250 | ||
2bf11819 PM |
251 | # post-processing needed for some platforms |
252 | case "$platform" in | |
253 | pseries|chrp) | |
5c539ee3 | 254 | $objbin/addnote "$ofile" |
2bf11819 | 255 | ;; |
627aa944 | 256 | coff) |
cd197ffc | 257 | ${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile" |
5c539ee3 | 258 | $objbin/hack-coff "$ofile" |
2bf11819 | 259 | ;; |
0fdd717e | 260 | cuboot*) |
aeb4552f | 261 | gzip -f -9 "$ofile" |
0fdd717e | 262 | mkimage -A ppc -O linux -T kernel -C gzip -a "$base" -e "$entry" \ |
aeb4552f | 263 | $uboot_version -d "$ofile".gz "$ofile" |
0fdd717e | 264 | ;; |
f6dfc805 DG |
265 | treeboot*) |
266 | mv "$ofile" "$ofile.elf" | |
5c539ee3 | 267 | $objbin/mktree "$ofile.elf" "$ofile" "$base" "$entry" |
f6dfc805 DG |
268 | if [ -z "$cacheit" ]; then |
269 | rm -f "$ofile.elf" | |
270 | fi | |
271 | exit 0 | |
272 | ;; | |
bafdb645 GL |
273 | ps3) |
274 | # The ps3's loader supports loading gzipped binary images from flash | |
275 | # rom to addr zero. The loader enters the image at addr 0x100. A | |
276 | # bootwrapper overlay is use to arrange for the kernel to be loaded | |
277 | # to addr zero and to have a suitable bootwrapper entry at 0x100. | |
278 | # To construct the rom image, 0x100 bytes from offset 0x100 in the | |
279 | # kernel is copied to the bootwrapper symbol __system_reset_kernel. | |
280 | # The 0x100 bytes at the bootwrapper symbol __system_reset_overlay is | |
281 | # then copied to offset 0x100. At runtime the bootwrapper program | |
282 | # copies the 0x100 bytes at __system_reset_kernel to addr 0x100. | |
283 | ||
aeb4552f | 284 | system_reset_overlay=0x`${CROSS}nm "$ofile" \ |
bafdb645 GL |
285 | | grep ' __system_reset_overlay$' \ |
286 | | cut -d' ' -f1` | |
287 | system_reset_overlay=`printf "%d" $system_reset_overlay` | |
aeb4552f | 288 | system_reset_kernel=0x`${CROSS}nm "$ofile" \ |
bafdb645 GL |
289 | | grep ' __system_reset_kernel$' \ |
290 | | cut -d' ' -f1` | |
291 | system_reset_kernel=`printf "%d" $system_reset_kernel` | |
292 | overlay_dest="256" | |
293 | overlay_size="256" | |
294 | ||
aeb4552f SW |
295 | ${CROSS}objcopy -O binary "$ofile" "$ofile.bin" |
296 | ||
d4740373 GL |
297 | dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \ |
298 | skip=$overlay_dest seek=$system_reset_kernel \ | |
299 | count=$overlay_size bs=1 | |
bafdb645 | 300 | |
d4740373 GL |
301 | dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \ |
302 | skip=$system_reset_overlay seek=$overlay_dest \ | |
303 | count=$overlay_size bs=1 | |
bafdb645 | 304 | |
928b9695 DW |
305 | odir="$(dirname "$ofile.bin")" |
306 | rm -f "$odir/otheros.bld" | |
307 | gzip --force -9 --stdout "$ofile.bin" > "$odir/otheros.bld" | |
bafdb645 | 308 | ;; |
2bf11819 | 309 | esac |