#!/bin/sh

. /etc/functions.sh
. /lib/ramips.sh

if [ ! -x /usr/sbin/maccalc ]; then
	echo "$0: maccalc not found!"
	return
fi

create_lan_wan()
{
	uci batch <<EOF
set network.lan.ifname=eth0.1
set network.wan=interface
set network.wan.ifname=eth0.2
set network.wan.proto=dhcp
commit network
EOF
}

get_mac_binary()
{
	local mtdname="$1"
	local seek="$2"
	local part

	part=$(find_mtd_part "$mtdname")
	if [ -z "$part" ]; then
		echo "get_mac_binary: partition $mtdname not found!" >&2
		return
	fi

	dd bs=1 skip=$seek count=6 if=$part 2>/dev/null | /usr/sbin/maccalc bin2mac
}

get_mac_nvram()
{
	local mtdname="$1"
	local key="$2"
	local part
	local mac_dirty

	part=$(find_mtd_part "$mtdname")
	if [ -z "$part" ]; then
		echo "get_mac_nvram: partition $mtdname not found!" >&2
		return
	fi

	mac_dirty=$(strings "$part" | sed -n 's/'"$key"'=//p')
	# "canonicalize" mac
	maccalc add "$mac_dirty" 0
}

set_interface_mac()
{
	local iface="$1"
	local mac="$2"

	uci batch <<EOF
set network.$iface.macaddr=""$mac"
commit network
EOF
}

ramips_setup_interfaces()
{
	local board="$1"

	case $board in
	argus-atp52b | \
	b2c | \
	f5d8235-v2 | \
	nw718)
		create_lan_wan
		;;

	*)
		RT3X5X=`cat /proc/cpuinfo | grep RT3.5`
		[ -z "${RT3X5X}" ] || create_lan_wan
		;;
	esac
}

ramips_setup_macs()
{
	local board="$1"
	local lan_mac=""
	local wan_mac=""

	case $board in
	f5d8235-v2)
		lan_mac=$(get_mac_nvram "u-boot" 262148)
		wan_mac=$(/usr/sbin/maccalc add "$lan_mac" 1)
		;;

	argus-atp52b | \
	b2c | \
	nw718)
		lan_mac=$(get_mac_binary factory 4)
		wan_mac=$(/usr/sbin/maccalc add "$lan_mac" 1)
		;;
	esac

	[ -n $lan_mac ] && set_interface_mac lan $lan_mac
	[ -n $wan_mac ] && set_interface_mac wan $wan_mac
}

board=$(ramips_board_name)

ramips_setup_interfaces $board
ramips_setup_macs $board