openwrt/target/linux/ath79/base-files/etc/hotplug.d/firmware/10-ath9k-eeprom

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#!/bin/sh
[ -e /lib/firmware/$FIRMWARE ] && exit 0
. /lib/functions.sh
. /lib/functions/system.sh
ath9k_eeprom_die() {
echo "ath9k eeprom: " "$*"
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 of=/lib/firmware/$FIRMWARE bs=1 skip=$offset count=$count 2>/dev/null || \
ath9k_eeprom_die "failed to extract from $mtd"
}
ath9k_eeprom_extract_reverse() {
local part=$1
local offset=$2
local count=$3
local mtd
local reversed
local caldata
mtd=$(find_mtd_chardev "$part")
reversed=$(hexdump -v -s $offset -n $count -e '/1 "%02x "' $mtd)
for byte in $reversed; do
caldata="\x${byte}${caldata}"
done
printf "%b" "$caldata" > /lib/firmware/$FIRMWARE
}
board=$(board_name)
case "$FIRMWARE" in
"ath9k-eeprom-pci-0000:00:00.0.bin")
case $board in
"avm,fritz300e")
ath9k_eeprom_extract_reverse "urloader" 5441 1088
;;
"tplink,tl-wdr3600"|\
"tplink,tl-wdr4300")
ath9k_eeprom_extract "art" 20480 1088
;;
"tplink,tl-wr740n-v2"|\
"ubnt,unifi")
ath9k_eeprom_extract "art" 4096 2048
;;
*)
ath9k_eeprom_die "board $board is not supported yet"
;;
esac
;;
esac