PKGBUILDs/alarm/uboot-cubox-i/uboot-cubox-i.install

flash_uboot() {
  if mountpoint -d /boot > /dev/null 2>&1; then
    base=/boot
  else
    base=/
  fi
  major=$(mountpoint -d $base | cut -f 1 -d ':')
  minor=$(expr $(mountpoint -d $base | cut -f 2 -d ':') - 1)
  device=/dev/$(cat /proc/partitions | awk {'if ($1 == "'${major}'" && $2 == "'${minor}'") print $4 '})

  echo "A new U-Boot version needs to be flashed onto ${device}."
  echo "Do you want to do this now? [y|N]"
  read -r shouldwe
  if [[ $shouldwe =~ ^([yY][eE][sS]|[yY])$ ]]; then
    dd if=/boot/SPL of=${device} bs=1K seek=1
    dd if=/boot/u-boot.img of=${device} bs=1K seek=69
    sync
  else
    echo "You can do this later by running:"
    echo "# dd if=/boot/SPL of=${device} bs=1K seek=1"
    echo "# dd if=/boot/u-boot.img of=${device} bs=1K seek=69"
  fi
}

post_install() {
  flash_uboot
}

post_upgrade() {
  flash_uboot
  if (( $(vercmp $2 2017.01-1) < 0 )); then
    echo ' >>> Note: uEnv.txt is no longer sourced. Make any customizations within /boot/boot.txt'
    echo '           and run ./mkscr within /boot to convert it to the boot.scr file.'
  fi
}