--- /dev/null
+#!/bin/sh
+
+ath10kcal_die() {
+ echo "ath10cal: " "$*"
+ exit 1
+}
+
+ath10kcal_from_file() {
+ local source=$1
+ local offset=$2
+ local target=$3
+
+ dd if=$source of=$target bs=1 skip=$offset count=2116 2>/dev/null || \
+ ath10kcal_die "failed to extract calibration data from $source"
+}
+
+[ -e /lib/firmware/$FIRMWARE ] && exit 0
+
+. /lib/ar71xx.sh
+. /lib/functions.sh
+. /lib/functions/system.sh
+
+ath10kcal_mac=""
+ath10kcal_tmp="/tmp/ath10k-caldata.bin"
+
+board=$(ar71xx_board_name)
+
+case "$FIRMWARE" in
+"ath10k/cal-pci-0000:01:00.0.bin")
+ case $board in
+ rb-911g-5hpacd)
+ ath10kcal_from_file "/sys/firmware/routerboot/ext_wlan_data" 20480 $ath10kcal_tmp
+ ;;
+ esac
+ ;;
+
+*)
+ exit 1
+ ;;
+esac
+
+[ -f $ath10kcal_tmp ] && {
+ cp $ath10kcal_tmp /lib/firmware/$FIRMWARE
+ rm -f $ath10kcal_tmp
+}