ice4pi

#!/bin/bash

dtparam spi=on
gpioset -t0 GPIO24=1
sleep 0.1
gpioset -t0 GPIO24=0

tr '\0' '\377' < /dev/zero | dd bs=1M count=4 of=image iflag=fullblock
dd if=${1} conv=notrunc of=image
flashrom -p linux_spi:dev=/dev/spidev0.0,spispeed=20000 -w image
#workaround first time fails after initial programming
#flashrom -p linux_spi:dev=/dev/spidev0.0,spispeed=20000 -w image
dtparam spi=off
gpioset -t0 GPIO24=1
#gpioget GPIO24


val='"GPIO25"=active'
while [ "$val" == '"GPIO25"=active' ] ; do
  val=`gpioget GPIO25`
  echo $val
  sleep 0.1
done
dtparam spi=on