OpenWrt – Rev 4

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#!/bin/sh

FW_FILE="/lib/firmware/$FIRMWARE"

ath9k_eeprom_die() {
        echo "ath9k eeprom: " "$*" >&2
        exit 1
}

ath9k_eeprom_extract() {
        local part=$1
        local offset=$2
        local count=$3
        local mtd

        mtd=$(find_mtd_chardev $part)
        [ -n "$mtd" ] || \
                ath9k_eeprom_die "no mtd device found for partition $part"

        dd if=$mtd bs=$offset skip=1 count=1 2>/dev/null | dd of=$FW_FILE bs=$count count=1 2>/dev/null || \
                ath9k_eeprom_die "failed to extract from $mtd"
}

tpl_set_wireless_mac()
{
        local offset=$1
        local mac

        mac=$(mtd_get_mac_binary u-boot 326656)
        mac=$(macaddr_add $mac $offset)

        macaddr_2bin $mac | dd bs=1 count=6 seek=2 conv=notrunc of=$FW_FILE 2>/dev/null
}

[ -e $FW_FILE ] && exit 0

. /lib/functions.sh
. /lib/functions/system.sh

board=$(board_name)

case "$FIRMWARE" in
"pci_wmac0.eeprom")
        case $board in
        tplink,tl-wdr4900-v1)
                ath9k_eeprom_extract "caldata" 4096 2048
                tpl_set_wireless_mac 0
                ;;
        *)
                ath9k_eeprom_die "board $board is not supported yet"
                ;;
        esac
        ;;

"pci_wmac1.eeprom")
        case $board in
        tplink,tl-wdr4900-v1)
                ath9k_eeprom_extract "caldata" 20480 2048
                tpl_set_wireless_mac -1
                ;;
        *)
                ath9k_eeprom_die "board $board is not supported yet"
                ;;
        esac
        ;;
esac