Commit | Line | Data |
---|---|---|
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 $kernel.strip.gz (use if present & newer, else make) | |
18 | # -C prefix specify command prefix for cross-building tools | |
19 | # (strip, objcopy, ld) | |
20 | # -D dir specify directory containing data files used by script | |
21 | # (default ./arch/powerpc/boot) | |
22 | # -W dir specify working directory for temporary files (default .) | |
23 | ||
24 | # defaults | |
25 | kernel= | |
26 | ofile=zImage | |
27 | platform=of | |
28 | initrd= | |
29 | dtb= | |
30 | dts= | |
31 | cacheit= | |
32 | ||
33 | # cross-compilation prefix | |
34 | CROSS= | |
35 | ||
36 | # directory for object and other files used by this script | |
37 | object=arch/powerpc/boot | |
38 | ||
39 | # directory for working files | |
40 | tmpdir=. | |
41 | ||
42 | usage() { | |
43 | echo 'Usage: wrapper [-o output] [-p platform] [-i initrd]' >&2 | |
44 | echo ' [-d devtree] [-s tree.dts] [-c] [-C cross-prefix]' >&2 | |
45 | echo ' [-D datadir] [-W workingdir] [vmlinux]' >&2 | |
46 | exit 1 | |
47 | } | |
48 | ||
49 | while [ "$#" -gt 0 ]; do | |
50 | case "$1" in | |
51 | -o) | |
52 | shift | |
53 | [ "$#" -gt 0 ] || usage | |
54 | ofile="$1" | |
55 | ;; | |
56 | -p) | |
57 | shift | |
58 | [ "$#" -gt 0 ] || usage | |
59 | platform="$1" | |
60 | ;; | |
61 | -i) | |
62 | shift | |
63 | [ "$#" -gt 0 ] || usage | |
64 | initrd="$1" | |
65 | ;; | |
66 | -d) | |
67 | shift | |
68 | [ "$#" -gt 0 ] || usage | |
69 | dtb="$1" | |
70 | ;; | |
71 | -s) | |
72 | shift | |
73 | [ "$#" -gt 0 ] || usage | |
74 | dts="$1" | |
75 | ;; | |
76 | -c) | |
77 | cacheit=y | |
78 | ;; | |
79 | -C) | |
80 | shift | |
81 | [ "$#" -gt 0 ] || usage | |
82 | CROSS="$1" | |
83 | ;; | |
84 | -D) | |
85 | shift | |
86 | [ "$#" -gt 0 ] || usage | |
87 | object="$1" | |
88 | ;; | |
89 | -W) | |
90 | shift | |
91 | [ "$#" -gt 0 ] || usage | |
92 | tmpdir="$1" | |
93 | ;; | |
94 | -?) | |
95 | usage | |
96 | ;; | |
97 | *) | |
98 | [ -z "$kernel" ] || usage | |
99 | kernel="$1" | |
100 | ;; | |
101 | esac | |
102 | shift | |
103 | done | |
104 | ||
105 | if [ -n "$dts" ]; then | |
106 | if [ -z "$dtb" ]; then | |
107 | dtb="$platform.dtb" | |
108 | fi | |
109 | dtc -O dtb -o "$dtb" -b 0 -V 16 "$dts" || exit 1 | |
110 | fi | |
111 | ||
112 | if [ -z "$kernel" ]; then | |
113 | kernel=vmlinux | |
114 | fi | |
115 | ||
116 | platformo=$object/"$platform".o | |
117 | lds=$object/zImage.lds | |
118 | ext=strip | |
119 | objflags=-S | |
120 | tmp=$tmpdir/zImage.$$.o | |
121 | ksection=.kernel:vmlinux.strip | |
122 | isection=.kernel:initrd | |
123 | ||
124 | case "$platform" in | |
125 | pmac|pseries|chrp) | |
126 | platformo=$object/of.o | |
127 | ;; | |
128 | pmaccoff) | |
129 | platformo=$object/of.o | |
130 | lds=$object/zImage.coff.lds | |
131 | ;; | |
132 | miboot|uboot) | |
133 | # miboot and U-boot want just the bare bits, not an ELF binary | |
134 | ext=bin | |
135 | objflags="-O binary" | |
136 | tmp="$ofile" | |
137 | ksection=image | |
138 | isection=initrd | |
139 | ;; | |
140 | esac | |
141 | ||
142 | vmz="$tmpdir/`basename \"$kernel\"`.$ext" | |
143 | if [ -z "$cacheit" -o ! -f "$vmz.gz" -o "$vmz.gz" -ot "$kernel" ]; then | |
144 | ${CROSS}objcopy $objflags "$kernel" "$vmz.$$" | |
145 | gzip -f -9 "$vmz.$$" | |
146 | if [ -n "$cacheit" ]; then | |
147 | mv -f "$vmz.$$.gz" "$vmz.gz" | |
148 | else | |
149 | vmz="$vmz.$$" | |
150 | fi | |
151 | fi | |
152 | ||
153 | case "$platform" in | |
154 | uboot) | |
155 | rm -f "$ofile" | |
156 | version=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \ | |
157 | cut -d' ' -f3` | |
158 | if [ -n "$version" ]; then | |
159 | version="-n Linux-$version" | |
160 | fi | |
161 | mkimage -A ppc -O linux -T kernel -C gzip -a 00000000 -e 00000000 \ | |
162 | $version -d "$vmz.gz" "$ofile" | |
163 | if [ -z "$cacheit" ]; then | |
164 | rm -f $vmz.gz | |
165 | fi | |
166 | exit 0 | |
167 | ;; | |
168 | esac | |
169 | ||
170 | addsec() { | |
171 | ${CROSS}objcopy $4 $1 \ | |
172 | --add-section=$3="$2" \ | |
173 | --set-section-flags=$3=contents,alloc,load,readonly,data | |
174 | } | |
175 | ||
176 | addsec $tmp "$vmz.gz" $ksection $object/empty.o | |
177 | if [ -z "$cacheit" ]; then | |
178 | rm -f "$vmz.gz" | |
179 | fi | |
180 | ||
181 | if [ -n "$initrd" ]; then | |
182 | addsec $tmp "$initrd" initrd | |
183 | fi | |
184 | ||
185 | if [ -n "$dtb" ]; then | |
186 | addsec $tmp "$dtb" dtb | |
187 | fi | |
188 | ||
189 | if [ "$platform" != "miboot" ]; then | |
190 | ${CROSS}ld -m elf32ppc -T $lds -o "$ofile" \ | |
191 | $object/crt0.o $platformo $tmp $object/wrapper.a | |
192 | rm $tmp | |
193 | fi | |
194 | ||
195 | # post-processing needed for some platforms | |
196 | case "$platform" in | |
197 | pseries|chrp) | |
198 | $object/addnote "$ofile" | |
199 | ;; | |
200 | pmaccoff) | |
201 | ${CROSS}objcopy -O aixcoff-rs6000 --set-start 0x500000 "$ofile" | |
202 | $object/hack-coff "$ofile" | |
203 | ;; | |
204 | esac |