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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 $kernel.strip.gz (use if present & newer, else make) | |
18 | # -C prefix specify command prefix for cross-building tools | |
19 | # (strip, objcopy, ld) | |
20 | # -D dir specify directory containing data files used by script | |
21 | # (default ./arch/powerpc/boot) | |
22 | # -W dir specify working directory for temporary files (default .) | |
23 | ||
24 | # defaults | |
25 | kernel= | |
26 | ofile=zImage | |
27 | platform=of | |
28 | initrd= | |
29 | dtb= | |
30 | dts= | |
31 | cacheit= | |
a9903811 | 32 | gzip=.gz |
2bf11819 PM |
33 | |
34 | # cross-compilation prefix | |
35 | CROSS= | |
36 | ||
37 | # directory for object and other files used by this script | |
38 | object=arch/powerpc/boot | |
39 | ||
40 | # directory for working files | |
41 | tmpdir=. | |
42 | ||
43 | usage() { | |
44 | echo 'Usage: wrapper [-o output] [-p platform] [-i initrd]' >&2 | |
45 | echo ' [-d devtree] [-s tree.dts] [-c] [-C cross-prefix]' >&2 | |
a9903811 | 46 | echo ' [-D datadir] [-W workingdir] [--no-gzip] [vmlinux]' >&2 |
2bf11819 PM |
47 | exit 1 |
48 | } | |
49 | ||
50 | while [ "$#" -gt 0 ]; do | |
51 | case "$1" in | |
52 | -o) | |
53 | shift | |
54 | [ "$#" -gt 0 ] || usage | |
55 | ofile="$1" | |
56 | ;; | |
57 | -p) | |
58 | shift | |
59 | [ "$#" -gt 0 ] || usage | |
60 | platform="$1" | |
61 | ;; | |
62 | -i) | |
63 | shift | |
64 | [ "$#" -gt 0 ] || usage | |
65 | initrd="$1" | |
66 | ;; | |
67 | -d) | |
68 | shift | |
69 | [ "$#" -gt 0 ] || usage | |
70 | dtb="$1" | |
71 | ;; | |
72 | -s) | |
73 | shift | |
74 | [ "$#" -gt 0 ] || usage | |
75 | dts="$1" | |
76 | ;; | |
77 | -c) | |
78 | cacheit=y | |
79 | ;; | |
80 | -C) | |
81 | shift | |
82 | [ "$#" -gt 0 ] || usage | |
83 | CROSS="$1" | |
84 | ;; | |
85 | -D) | |
86 | shift | |
87 | [ "$#" -gt 0 ] || usage | |
88 | object="$1" | |
89 | ;; | |
90 | -W) | |
91 | shift | |
92 | [ "$#" -gt 0 ] || usage | |
93 | tmpdir="$1" | |
94 | ;; | |
a9903811 SW |
95 | --no-gzip) |
96 | gzip= | |
97 | ;; | |
2bf11819 PM |
98 | -?) |
99 | usage | |
100 | ;; | |
101 | *) | |
102 | [ -z "$kernel" ] || usage | |
103 | kernel="$1" | |
104 | ;; | |
105 | esac | |
106 | shift | |
107 | done | |
108 | ||
109 | if [ -n "$dts" ]; then | |
110 | if [ -z "$dtb" ]; then | |
111 | dtb="$platform.dtb" | |
112 | fi | |
113 | dtc -O dtb -o "$dtb" -b 0 -V 16 "$dts" || exit 1 | |
114 | fi | |
115 | ||
116 | if [ -z "$kernel" ]; then | |
117 | kernel=vmlinux | |
118 | fi | |
119 | ||
120 | platformo=$object/"$platform".o | |
121 | lds=$object/zImage.lds | |
122 | ext=strip | |
123 | objflags=-S | |
124 | tmp=$tmpdir/zImage.$$.o | |
125 | ksection=.kernel:vmlinux.strip | |
126 | isection=.kernel:initrd | |
127 | ||
128 | case "$platform" in | |
129 | pmac|pseries|chrp) | |
130 | platformo=$object/of.o | |
131 | ;; | |
132 | pmaccoff) | |
133 | platformo=$object/of.o | |
134 | lds=$object/zImage.coff.lds | |
135 | ;; | |
136 | miboot|uboot) | |
137 | # miboot and U-boot want just the bare bits, not an ELF binary | |
138 | ext=bin | |
139 | objflags="-O binary" | |
140 | tmp="$ofile" | |
141 | ksection=image | |
142 | isection=initrd | |
143 | ;; | |
144 | esac | |
145 | ||
146 | vmz="$tmpdir/`basename \"$kernel\"`.$ext" | |
1383a34f | 147 | if [ -z "$cacheit" -o ! -f "$vmz$gzip" -o "$vmz$gzip" -ot "$kernel" ]; then |
2bf11819 | 148 | ${CROSS}objcopy $objflags "$kernel" "$vmz.$$" |
a9903811 SW |
149 | |
150 | if [ -n "$gzip" ]; then | |
151 | gzip -f -9 "$vmz.$$" | |
152 | fi | |
153 | ||
2bf11819 | 154 | if [ -n "$cacheit" ]; then |
a9903811 | 155 | mv -f "$vmz.$$$gzip" "$vmz$gzip" |
2bf11819 PM |
156 | else |
157 | vmz="$vmz.$$" | |
158 | fi | |
159 | fi | |
160 | ||
a9903811 SW |
161 | vmz="$vmz$gzip" |
162 | ||
2bf11819 PM |
163 | case "$platform" in |
164 | uboot) | |
165 | rm -f "$ofile" | |
166 | version=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \ | |
167 | cut -d' ' -f3` | |
168 | if [ -n "$version" ]; then | |
169 | version="-n Linux-$version" | |
170 | fi | |
171 | mkimage -A ppc -O linux -T kernel -C gzip -a 00000000 -e 00000000 \ | |
a9903811 | 172 | $version -d "$vmz" "$ofile" |
2bf11819 | 173 | if [ -z "$cacheit" ]; then |
a9903811 | 174 | rm -f "$vmz" |
2bf11819 PM |
175 | fi |
176 | exit 0 | |
177 | ;; | |
178 | esac | |
179 | ||
180 | addsec() { | |
181 | ${CROSS}objcopy $4 $1 \ | |
182 | --add-section=$3="$2" \ | |
183 | --set-section-flags=$3=contents,alloc,load,readonly,data | |
184 | } | |
185 | ||
a9903811 | 186 | addsec $tmp "$vmz" $ksection $object/empty.o |
2bf11819 | 187 | if [ -z "$cacheit" ]; then |
a9903811 | 188 | rm -f "$vmz" |
2bf11819 PM |
189 | fi |
190 | ||
191 | if [ -n "$initrd" ]; then | |
c888554b | 192 | addsec $tmp "$initrd" $isection |
2bf11819 PM |
193 | fi |
194 | ||
195 | if [ -n "$dtb" ]; then | |
c888554b | 196 | addsec $tmp "$dtb" .kernel:dtb |
e9c4b4bd MG |
197 | if [ -n "$dts" ]; then |
198 | rm $dtb | |
199 | fi | |
2bf11819 PM |
200 | fi |
201 | ||
202 | if [ "$platform" != "miboot" ]; then | |
203 | ${CROSS}ld -m elf32ppc -T $lds -o "$ofile" \ | |
cd197ffc | 204 | $platformo $tmp $object/wrapper.a |
2bf11819 PM |
205 | rm $tmp |
206 | fi | |
207 | ||
208 | # post-processing needed for some platforms | |
209 | case "$platform" in | |
210 | pseries|chrp) | |
211 | $object/addnote "$ofile" | |
212 | ;; | |
213 | pmaccoff) | |
cd197ffc DG |
214 | entry=`objdump -f "$ofile" | grep '^start address ' | \ |
215 | cut -d' ' -f3` | |
216 | ${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile" | |
2bf11819 PM |
217 | $object/hack-coff "$ofile" |
218 | ;; | |
219 | esac |