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clean up x86-2.6 partitioning stuff

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@5705 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2006-12-07 02:51:35 +00:00
parent 19021c16ff
commit a1f92f4320
2 changed files with 19 additions and 42 deletions
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4
target/linux/x86-2.6/image/Makefile
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@ -56,7 +56,3 @@ define Image/Build
endef
$(eval $(call BuildImage))
$(eval $(call RequireCommand,fdisk, \
Please install fdisk \
))

57
target/linux/x86-2.6/image/gen_image.sh
View File

@ -1,58 +1,39 @@
#!/usr/bin/env bash
# Copyright (C) 2006 OpenWrt.org
set -x
[ $# == 5 ] || {
echo "SYNTAX: $0 <file> <kernel size> <kernel directory> <rootfs size> <rootfs image>"
exit 1
}
file="$1"
part1s="$2"
part1d="$3"
part2s="$4"
part2f="$5"
OUTPUT="$1"
KERNELSIZE="$2"
KERNELDIR="$3"
ROOTFSSIZE="$4"
ROOTFSIMAGE="$5"
rm -f "$OUTPUT"
head=16
sect=63
cyl=$(( ($part1s + $part2s) * 1024 * 1024 / ($head * $sect * 512)))
cyl=$(( ($KERNELSIZE + $ROOTFSSIZE) * 1024 * 1024 / ($head * $sect * 512)))
dd if=/dev/zero of="$file" bs=1M count=$(($part1s + $part2s)) 2>/dev/null || exit
fdisk -u -C $cyl -H $head -S $sect "$file" > /dev/null 2>/dev/null <<EOF
n
p
1
# create partition table
set `ptgen -o "$OUTPUT" -h $head -s $sect -p ${KERNELSIZE}m -p ${ROOTFSSIZE}m`
+$(($part1s * 1024))K
n
p
2
KERNELOFFSET="$(($1 / 512))"
ROOTFSOFFSET="$(($2 / 512))"
BLOCKS="$((($ROOTFSOFFSET - $KERNELOFFSET) / 2 - 1))"
w
q
EOF
block() {
echo -e 'p\nq' | fdisk -u -C $cyl -H $head -S $sect "$file" | awk -v file="$file$1" -v n="$(($2 + 2))" '
$1 == file {
print $n * 512
}'
}
start="$(block 1 0)"
end="$(block 1 1)"
blocks="$(( ($end - $start) / 1024 ))"
genext2fs -d "$part1d" -b "$blocks" "$file.kernel"
dd if="$file.kernel" of="$file" bs=512 seek="$(($start / 512))" conv=notrunc
rm -f "$file.kernel"
start="$(block 2 0)"
dd if="$part2f" of="$file" bs=512 seek="$(($start / 512))" conv=notrunc
genext2fs -d "$KERNELDIR" -b "$BLOCKS" "$OUTPUT.kernel"
dd if="$OUTPUT.kernel" of="$OUTPUT" bs=512 seek="$KERNELOFFSET" conv=notrunc
dd if="$ROOTFSIMAGE" of="$OUTPUT" bs=512 seek="$ROOTFSOFFSET" conv=notrunc
#rm -f "$OUTPUT.kernel"
which chpax >/dev/null && chpax -zp $(which grub)
grub --device-map=/dev/null <<EOF
device (hd0) $file
device (hd0) $OUTPUT
geometry (hd0) $cyl $head $sect
root (hd0,0)
setup (hd0)