#!/bin/sh

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

ath10kcal_extract() {
	local part=$1
	local offset=$(($2))
	local count=$(($3))
	local mtd

	mtd=$(find_mtd_chardev $part)
	[ -n "$mtd" ] || \
		ath10kcal_die "no mtd device found for partition $part"

	dd if=$mtd of=/lib/firmware/$FIRMWARE iflag=skip_bytes bs=$count skip=$offset count=1 2>/dev/null || \
		ath10kcal_die "failed to extract calibration data from $mtd"
}

ath10kcal_patch_mac() {
	local mac=$1

	[ -z "$mac" ] && return

	macaddr_2bin $mac | dd of=/lib/firmware/$FIRMWARE conv=notrunc oflag=seek_bytes bs=6 seek=6 count=1
}

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

board=$(board_name)

case "$FIRMWARE" in
"ath10k/cal-pci-0000:00:00.0.bin")
	case $board in
	glinet,gl-ar750s-nor|\
	glinet,gl-ar750s-nor-nand)
		ath10kcal_extract "art" 0x5000 0x844
		ath10kcal_patch_mac $(macaddr_add $(mtd_get_mac_binary art 0x0) +1)
		;;
	zyxel,nbg6716)
		ath10kcal_extract "art" 0x5000 0x844
		ath10kcal_patch_mac $(macaddr_add $(mtd_get_mac_ascii u-boot-env ethaddr) +1)
		;;
	esac
	;;
*)
	exit 1
	;;
esac
