SAMSUNG SOC SD IROM writer for Linux

已经测试过在Fedora10上运行顺利，需要root权限才可以执行

#! /bin/bash
# written by [e-mail] 2010
mountpt=/media/disk
devicename=sdb
sdcard=/dev/$devicename

if test $# -le 0 ; then
    echo "Error: needs IROM image path"
    exit 1
fi
infile="$1"
if [ -e $infile ] ; then
    echo "IROM image: $infile"
else
    echo "IROM image: $infile does not existing"
    exit 1
fi
imagelen=`wc -c < $infile`
echo "IROM image Size: $imagelen bytes"

if [ -e /sys/block/$devicename/removable ] ; then
        removable=$(cat /sys/block/$devicename/removable)
else
        echo "SD card: /dev/$devicename is not existing"
        exit 1;
fi
if [ ! $removable == "1" ]; then
        echo "/dev/$devicename is not removable"
    exit 1;
fi
if [ -e /sys/block/$devicename/queue/hw_sector_size ] ; then
    sectorsize=$(cat /sys/block/$devicename/queue/hw_sector_size)
    echo "SD card sector size: $sectorsize bytes"
    if ! test $sectorsize -eq 512 ; then
        echo "Warning: sector size is not 512"
    fi
fi
if [ -e /sys/block/$devicename/size ] ; then
    numsectors=$(cat /sys/block/$devicename/size)
    echo "SD card total size: $numsectors sectors"
fi
disksize=`expr $numsectors \* $sectorsize`
echo "SD card total size: $disksize bytes"
reservedsize=`expr $sectorsize \* 2`
endsize=`expr $reservedsize + $imagelen`
diskoffset=`expr $disksize - $endsize`
echo "IROM image is writen to offset: $diskoffset (bytes)"
diskoffsetsector=`expr $diskoffset / $sectorsize`
echo "IROM image is writen to offset: $diskoffsetsector (sectors)"
issectoralign=`expr $diskoffset % $sectorsize`
if ! test $issectoralign -eq 0 ; then
    echo "Warning: IROM image size is not align on sectors"
fi
echo "start flushing IROM image..."
dd if=$infile of=/dev/$devicename bs=$sectorsize seek=$diskoffsetsector > /dev/null 2>&1 && echo "flush successful" || echo "Error: flush"