diff options
Diffstat (limited to 'Documentation/acpi/initramfs-add-dsdt.sh')
-rwxr-xr-x | Documentation/acpi/initramfs-add-dsdt.sh | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/Documentation/acpi/initramfs-add-dsdt.sh b/Documentation/acpi/initramfs-add-dsdt.sh new file mode 100755 index 000000000000..17ef6e838e14 --- /dev/null +++ b/Documentation/acpi/initramfs-add-dsdt.sh | |||
@@ -0,0 +1,43 @@ | |||
1 | #!/bin/bash | ||
2 | # Adds a DSDT file to the initrd (if it's an initramfs) | ||
3 | # first argument is the name of archive | ||
4 | # second argument is the name of the file to add | ||
5 | # The file will be copied as /DSDT.aml | ||
6 | |||
7 | # 20060126: fix "Premature end of file" with some old cpio (Roland Robic) | ||
8 | # 20060205: this time it should really work | ||
9 | |||
10 | # check the arguments | ||
11 | if [ $# -ne 2 ]; then | ||
12 | program_name=$(basename $0) | ||
13 | echo "\ | ||
14 | $program_name: too few arguments | ||
15 | Usage: $program_name initrd-name.img DSDT-to-add.aml | ||
16 | Adds a DSDT file to an initrd (in initramfs format) | ||
17 | |||
18 | initrd-name.img: filename of the initrd in initramfs format | ||
19 | DSDT-to-add.aml: filename of the DSDT file to add | ||
20 | " 1>&2 | ||
21 | exit 1 | ||
22 | fi | ||
23 | |||
24 | # we should check it's an initramfs | ||
25 | |||
26 | tempcpio=$(mktemp -d) | ||
27 | # cleanup on exit, hangup, interrupt, quit, termination | ||
28 | trap 'rm -rf $tempcpio' 0 1 2 3 15 | ||
29 | |||
30 | # extract the archive | ||
31 | gunzip -c "$1" > "$tempcpio"/initramfs.cpio || exit 1 | ||
32 | |||
33 | # copy the DSDT file at the root of the directory so that we can call it "/DSDT.aml" | ||
34 | cp -f "$2" "$tempcpio"/DSDT.aml | ||
35 | |||
36 | # add the file | ||
37 | cd "$tempcpio" | ||
38 | (echo DSDT.aml | cpio --quiet -H newc -o -A -O "$tempcpio"/initramfs.cpio) || exit 1 | ||
39 | cd "$OLDPWD" | ||
40 | |||
41 | # re-compress the archive | ||
42 | gzip -c "$tempcpio"/initramfs.cpio > "$1" | ||
43 | |||