tftp-put.sh

#!/bin/sh -ux

on_die()
{
  echo "Dying..."
  exit 0
}

trap 'on_die' TERM INT

while ! ping -c 1 -W 1 $1 > /dev/null
do
  echo "Waiting for $1"
done

tftp $1 <<EOF
binary
trace
verbose
put $2 firmware.bin
EOF