sonic-buildimage/device/nokia/x86_64-nokia_ixr7250e_36x400g-r0/platform_reboot

#!/bin/bash

update_reboot_cause()
{
    DEVICE_MGR_REBOOT_FILE=/tmp/device_mgr_reboot
    REBOOT_CAUSE_FILE=/host/reboot-cause/reboot-cause.txt
    DEVICE_REBOOT_CAUSE_FILE=/etc/opt/srlinux/reboot-cause.txt
    if [ -e  $DEVICE_MGR_REBOOT_FILE ]; then
        if [ -e $DEVICE_REBOOT_CAUSE_FILE ]; then
            cp -f $DEVICE_REBOOT_CAUSE_FILE $REBOOT_CAUSE_FILE
        fi
        rm -f $DEVICE_MGR_REBOOT_FILE
    else
        touch /etc/opt/srlinux/devmgr_reboot_cause.done
        rm -f $DEVICE_REBOOT_CAUSE_FILE &> /dev/null
    fi
    sync
}

# update the reboot_cuase file when reboot is trigger by device-mgr
update_reboot_cause

systemctl stop nokia-watchdog.service
sleep 2
echo "w" > /dev/watchdog
kick_date=`date -u`
echo "last watchdog kick $kick_date" > /var/log/nokia-watchdog-last.log
rm -f /sys/firmware/efi/efivars/dump-*
sync
exec /sbin/reboot $@