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#!/bin/bash
#
# Copyright 2014-present Facebook. All Rights Reserved.
#
# This program file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program in a file named COPYING; if not, write to the
# Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor,
# Boston, MA 02110-1301 USA
#
### BEGIN INIT INFO
# Provides: eth0_mac_fixup.sh
# Required-Start:
# Required-Stop:
# Default-Start: S
# Default-Stop:
# Short-Description: Fixup the MAC address for eth0 based on wedge EEPROM
### END INIT INFO
PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin
# get the MAC from EEPROM
mac=$(weutil 2>/dev/null | grep '^Local MAC' 2>/dev/null | cut -d' ' -f3 2>/dev/null)
# get the MAC from u-boot environment
ethaddr=$(fw_printenv ethaddr 2>/dev/null | cut -d'=' -f2 2>/dev/null)
if [ -z "$mac" ] && [ -n "$ethaddr" ]; then
# no MAC from EEPROM, use the one from u-boot environment
mac="$ethaddr"
fi
if [ -n "$mac" ]; then
ifconfig eth0 hw ether $mac
else
# no MAC from either EEPROM or u-boot environment
mac=$(ifconfig eth0 2>/dev/null |grep HWaddr 2>/dev/null |awk '{ print $5 }')
fi
if [ "$ethaddr" != "$mac" ]; then
# set the MAC from EEPROM or ifconfig back to u-boot environment so that u-boot
# can use it
fw_setenv "ethaddr" "$mac"
fi
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