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#!/bin/sh
#
# Copyright (C) 2011 OpenWrt.org
#
. /lib/functions/uci-defaults.sh
. /lib/ar71xx.sh
board=$(ar71xx_board_name)
findmtd() {
local partname="$1"
grep "\"$partname\"" /proc/mtd | awk -F: '{ print $1 }'
}
getcalmac() {
local partname="$1"
local offset="$2"
hexdump -e '17/1 "%c"' -s $offset -n 17 /dev/$(findmtd $partname) | tr -d : | tr 'A-Z' 'a-z'
}
calcmacX() {
local mac="$1"
local X="$2"
local oui="$(expr substr "$mac" 1 6)"
local end="$(expr substr "$mac" 7 12)"
echo -n $oui
expr substr "$(printf "%6lx" "$(($(printf "%lu" 0x${end}) + $X))")" 1 6
}
getifmac() {
local ifname="$1"
local ifmac
ifmac="$(ifconfig "$ifname" | grep HWaddr)"
ifmac="${ifmac#*HWaddr }"
ifmac="${ifmac%% *}"
echo "$ifmac" | tr -d : | tr 'A-Z' 'a-z'
}
case "$board" in
dir-825-b1-towholeflash)
mac1="$(getcalmac caldata 65440)"
mac1="$(calcmacX "$mac1" 2)"
mac2="$(calcmacX "$mac1" 1)"
if grep -q '"owrt_caldata"' /proc/mtd && [ "$mac1" = "$(getifmac eth0)" ] && [ "$mac2" = "$(getifmac eth1)" ]; then
mtd erase owrt_caldata
dd if=/dev/$(findmtd caldata) of=/dev/$(findmtd owrt_caldata) bs=65536 count=1
fi
;;
dir-825-b1-tostock)
mac1="$(getcalmac owrt_caldata 65440)"
mac1="$(calcmacX "$mac1" 2)"
mac2="$(calcmacX "$mac1" 1)"
if grep -q '"owrt_caldata"' /proc/mtd && [ "$mac1" = "$(getifmac eth0)" ] && [ "$mac2" = "$(getifmac eth1)" ]; then
mtd erase caldata
dd if=/dev/$(findmtd owrt_caldata) of=/dev/$(findmtd caldata) bs=65536 count=1
fi
;;
esac
return 0
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