OpenWrt – Rev 4

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#!/bin/sh
# Based on gabors ralink wisoc implementation.

rt2x00_eeprom_die() {
        echo "rt2x00 eeprom: " "$*"
        exit 1
}

rt2x00_eeprom_extract() {
        local part=$1
        local offset=$2
        local count=$3
        local mtd

        mtd=$(find_mtd_part $part)
        [ -n "$mtd" ] || \
                rt2x00_eeprom_die "no mtd device found for partition $part"

        dd if=$mtd of=/lib/firmware/$FIRMWARE bs=1 skip=$offset count=$count || \
                rt2x00_eeprom_die "failed to extract from $mtd"
}

[ -e /lib/firmware/$FIRMWARE ] && exit 0

. /lib/functions.sh

board=$(board_name)

case "$FIRMWARE" in
"rt2x00.eeprom" )
        case $board in
        hg556a_c)
                rt2x00_eeprom_extract "cal_data" 130560 512
                ;;
        hg622 |\
        hg655b)
                rt2x00_eeprom_extract "cal_data" 0 512
                ;;
        *)
                rt2x00_eeprom_die "board $board is not supported yet"
                ;;
        esac
        ;;
esac