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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2004-09-21 14:35:42 +0000 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2004-09-21 14:35:42 +0000 |
| commit | b45958cc502d14ff72c8960d59d12ee8cab5de0c (patch) | |
| tree | a3d8ee01eee3ff50002e2de69c4d2ce62a8ec1c0 /scripts/genhdimg | |
| parent | 2716661fde1693d6773eb279236cb0ca9bc1f1f6 (diff) | |
| download | ptxdist-b45958cc502d14ff72c8960d59d12ee8cab5de0c.tar.gz ptxdist-b45958cc502d14ff72c8960d59d12ee8cab5de0c.tar.xz | |
added script to generate (flash-)disk images with ptxdist
git-svn-id: https://svn.pengutronix.de/svn/ptxdist/trunks/ptxdist-0.7.0-trunk@1780 33e552b5-05e3-0310-8538-816dae2090ed
Diffstat (limited to 'scripts/genhdimg')
| -rwxr-xr-x | scripts/genhdimg | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/scripts/genhdimg b/scripts/genhdimg new file mode 100755 index 000000000..abbd101e4 --- /dev/null +++ b/scripts/genhdimg @@ -0,0 +1,100 @@ +#!/bin/bash + +# Create a bootable harddisk (or compact flash) image based upon a geometry +# given in cylinders, heads and sectors + +Usage() { +cat <<-EOF + +Usage: `basename "$0"` OPTIONS <svn rep> + + -h this help + -C <CYL> set cylinders + -H <HEAD> set heads + -S <SEC> set sectors + -m <stage1> path to grub stage1 + -n <stafe2> path to grub stage2 + -r <dir> path to root dir + -f <file> read options from file +EOF +} + +while getopts "hC:H:S:m:n:r:i:f:" OPT +do + case "$OPT" in + h) Usage + exit 1 + ;; + C) CYLINDERS="$OPTARG" + ;; + H) HEADS="$OPTARG" + ;; + S) SECTORS="$OPTARG" + ;; + m) STAGE1="$OPTARG" + ;; + n) STAGE2="$OPTARG" + ;; + r) ROOTDIR="$OPTARG" + ;; + i) IMAGEDIR="$OPTARG" + ;; + f) source "$OPTARG" + ;; + esac +done + +echo $IMAGEDIR +# sanity checks +if [ $(($HEADS)) = 0 ] || [ $((CYLINDERS)) = 0 ] || [ $((SECTORS)) = 0 ] +then + echo "set cylinders, heads and sectors" + exit 1 +fi + +if [ ! -f "$STAGE1" ]; then + echo "stage1 file \"$STAGE1\" not found" + exit 1 +fi + +if [ ! -f "$STAGE2" ]; then + echo "stage2 file \"$STAGE2\" not found" + exit 1 +fi + +# Size of whole hd image, in bytes +IMGSIZE=$(($HEADS * $CYLINDERS * $SECTORS * 512)) + +# size of one unit, in bytes +UNITSIZE=$(( $SECTORS * $HEADS * 512 )) + +# Offset for first partition in bytes +PART1OFFSET=$(( $(echo $PART1 | awk -F "," '{print $1}') * $UNITSIZE)) + +# Size of the root partition in bytes +PART1SIZE=$(($(echo $PART1 | awk -F "," '{print $2}') * $UNITSIZE)) + +echo ofs: $PART1OFFSET +echo size: $PART1SIZE + +# cat grub stages together, pad with zeros to offset of first partition +cat $STAGE1 $STAGE2 /dev/zero | \ + dd bs=1 count=$PART1OFFSET > $IMAGEDIR/hd.img.loader + +# generate a ext2 filesystem +genext2fs -b $(($PART1SIZE/1024)) -d $ROOTDIR $IMAGEDIR/root.ext2 + +# put the pieces together +cat $IMAGEDIR/hd.img.loader $IMAGEDIR/root.ext2 > $IMAGEDIR/hd.img + +rm -f $IMAGEDIR/root.ext2 $IMAGEDIR/hd.img.loader + +TMPFILE=`mktemp` + +# generate a partition table +sfdisk -x -C $CYLINDERS -H $HEADS -S $SECTORS $IMAGEDIR/hd.img << EOF +$PART1 +$PART2 +$PART3 +$PART4 +EOF |