--- /dev/null
+#!/bin/sh
+
+[ -e /lib/firmware/$FIRMWARE ] && exit 0
+
+. /lib/functions/caldata.sh
+
+board=$(board_name)
+
+case "$FIRMWARE" in
+"ath9k-eeprom-ahb-18100000.wmac.bin")
+ case $board in
+ zyxel,nbg6716)
+ caldata_extract "art" 0x1000 0x440
+ ath9k_patch_mac $(mtd_get_mac_ascii u-boot-env ethaddr)
+ ;;
+ *)
+ caldata_die "board $board is not supported yet"
+ ;;
+ esac
+ ;;
+esac