Here is an example script that I'm using to read the flash contents to a file
once and update it as I flash newer versions of the software:
#!/bin/sh
flashrom="flashrom"
programmer="ft2232_spi:type=openmoko,divisor=8"
contents="/home/paulk/embedded-freedom/Devices/G505s/kb9012/flashrom/flash-contents.img"
image="$1"
if [ -z $image ]
then
echo "Reading initial flash contents"
timeb=$( date +%s )
$flashrom -p $programmer -r $contents
timea=$( date +%s )
echo "Time: "$(( $timea - $timeb ))" seconds"
else
echo "Writing new flash contents"
timeb=$( date +%s )
$flashrom -p $programmer -w $image -C $contents --noverify
rc=$?
timea=$( date +%s )
if [ "$rc" -eq "0" ]
then
echo "Copying new flash contents"
cp $image $contents
fi
echo "Time: "$(( $timea - $timeb ))" seconds"
fi
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