kdb-setup.sh

#!/bin/bash

if [ "$(id -u)" != "0" ]; then
    echo "Run as root" 2>&1
    exit 1
fi

if [ ! -e /etc/init/ttyS0.conf ]; then
    cat << EOF > /etc/init/ttyS0.conf
# ttyS0 - getty
#
# This service maintains a getty on ttyS0 from the point the system is
# started until it is shut down again.

start on stopped rc RUNLEVEL=[12345]
stop on runlevel [!12345]

respawn
exec /sbin/getty -L 115200 ttyS0 vt102
EOF
fi

systemctl start getty@ttyS0
modprobe kgdboc kgdboc=ttyS0,115200
echo ttyS0 > /sys/module/kgdboc/parameters/kgdboc