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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2006-11-22 14:52:48 +0000 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2006-11-22 14:52:48 +0000 |
| commit | 1e1e63cc5f27b9714c273b9dc28eff2a3f354eee (patch) | |
| tree | d14ba41f418dab17d8178c9ac7ca53724236cbd9 /scripts/genhdimg | |
| parent | e7e3ca7c4a481170ceb7f884dcb56d3844a44fd5 (diff) | |
| download | ptxdist-1e1e63cc5f27b9714c273b9dc28eff2a3f354eee.tar.gz ptxdist-1e1e63cc5f27b9714c273b9dc28eff2a3f354eee.tar.xz | |
almost rewritten
git-svn-id: https://svn.pengutronix.de/svn/ptxdist/trunks/ptxdist-trunk@6361 33e552b5-05e3-0310-8538-816dae2090ed
Diffstat (limited to 'scripts/genhdimg')
| -rwxr-xr-x | scripts/genhdimg | 96 |
1 files changed, 25 insertions, 71 deletions
diff --git a/scripts/genhdimg b/scripts/genhdimg index 281ac28be..f6a20d017 100755 --- a/scripts/genhdimg +++ b/scripts/genhdimg @@ -1,100 +1,54 @@ #!/bin/bash -# Create a bootable harddisk (or compact flash) image based upon a geometry -# given in cylinders, heads and sectors +# Create a bootable harddisk (or compact flash) image Usage() { cat <<-EOF Usage: `basename "$0"` OPTIONS <svn rep> - -h this help - -C <CYL> set cylinders - -H <HEAD> set heads - -S <SEC> set sectors - -m <stage1> path to grub stage1 - -n <stafe2> path to grub stage2 - -r <dir> path to root dir - -f <file> read options from file + -h this help + -m <stage1> path to grub stage1 + -n <stafe2> path to grub stage2 + -o <hdimg file> resulting hd image + -i <img file> filesystem image + -p <size> partition size in kilobytes EOF } -while getopts "hC:H:S:m:n:r:i:f:" OPT +while getopts "hm:n:i:o:p:" OPT do case "$OPT" in h) Usage exit 1 ;; - C) CYLINDERS="$OPTARG" - ;; - H) HEADS="$OPTARG" - ;; - S) SECTORS="$OPTARG" - ;; m) STAGE1="$OPTARG" ;; n) STAGE2="$OPTARG" ;; - r) ROOTDIR="$OPTARG" + o) IMAGEFILE="$OPTARG" ;; - i) IMAGEDIR="$OPTARG" + i) FSIMAGE="$OPTARG" ;; - f) source "$OPTARG" + p) PARTSIZE=$(($OPTARG * 2)) ;; 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 * $HEADS * 512 )) +# get the first 446 bytes of stage1 +dd if=$STAGE1 bs=446 count=1 > $IMAGEFILE -# Offset for first partition in bytes -PART1OFFSET=$(( $(echo $PART1 | awk -F "," '{print $1}') * $UNITSIZE)) +# append a partition table to it. +# We leave space of 299 blocks to +# the first partition to put stage2 into +# this space +genpart -c -b 300 -s $PARTSIZE >> $IMAGEFILE +genpart -b 0 -s 0 >> $IMAGEFILE +genpart -b 0 -s 0 >> $IMAGEFILE +genpart -b 0 -s 0 -m >> $IMAGEFILE -# Size of the root partition in bytes -PART1SIZE=$(($(echo $PART1 | awk -F "," '{print $2}') * $UNITSIZE)) +# append stage2 padded to 299 blocks +cat $STAGE2 /dev/zero | dd bs=512 count=299 >> $IMAGEFILE -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 /tmp/ptxdist.XXXXXX` - -# generate a partition table -sfdisk -x -C $CYLINDERS -H $HEADS -S $SECTORS $IMAGEDIR/hd.img << EOF -$PART1 -$PART2 -$PART3 -$PART4 -EOF +# append the ext2 image padded to PARTSIZE blocks +cat $FSIMAGE /dev/zero | dd bs=512 count=$(($PARTSIZE - 300)) >> $IMAGEFILE |