#!/bin/sh
# Based on ar71xx 10-ath9k-eeprom

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

. /lib/functions/caldata.sh
. /lib/upgrade/nand.sh

ath9k_eeprom_extract_raw() {
	local source=$1
	local offset=$(($2))
	local swap=$3
	local size=4096
	local bs=1
	local conv=

	if [ $swap -gt 0 ]; then
		bs=2
		conv="conv=swab"
		size=$((size / bs))
		offset=$((offset / bs))
	fi

	dd if=$source of=/lib/firmware/$FIRMWARE bs=$bs skip=$offset count=$size $conv 2>/dev/null || \
			caldata_die "failed to extract from $mtd"
}

ath9k_eeprom_extract() {
	local part=$1
	local offset=$2
	local swap=$3
	local mtd

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

	ath9k_eeprom_extract_raw $mtd $offset $swap
}

ath9k_ubi_eeprom_extract() {
	local part=$1
	local offset=$2
	local swap=$3
	local ubidev=$(nand_find_ubi $CI_UBIPART)
	local ubi

	ubi=$(nand_find_volume $ubidev $part)
	[ -n "$ubi" ] || \
		caldata_die "no UBI volume found for $part"

	ath9k_eeprom_extract_raw /dev/$ubi $offset $swap
}

case "$FIRMWARE" in
	"ath9k-eeprom-pci-0000:00:0e.0.bin" | \
	"ath9k-eeprom-pci-0000:01:00.0.bin" | \
	"ath9k-eeprom-pci-0000:02:00.0.bin")
		board=$(board_name)

		case "$board" in
			arcadyan,arv7518pw)
				ath9k_eeprom_extract "boardconfig" 0x400 1
				;;
			arcadyan,arv8539pw22)
				ath9k_eeprom_extract "art" 0x400 1
				;;
			bt,homehub-v2b)
				ath9k_eeprom_extract "art" 0x0 1
				ath9k_patch_mac_crc "00:00:00:00:00:00" 0x20c
				;;
			bt,homehub-v3a)
				ath9k_eeprom_extract "art-copy" 0x0 1
				ath9k_patch_mac_crc $(macaddr_add $(mtd_get_mac_ascii uboot_env ethaddr) +2) 0x10c
				;;
			bt,homehub-v5a)
				ath9k_ubi_eeprom_extract "caldata" 0x1000 0
				ath9k_patch_mac_crc $(macaddr_add $(mtd_get_mac_binary_ubi caldata 0x110c) +2) 0x10c
				;;
			netgear,dgn3500|netgear,dgn3500b)
				ath9k_eeprom_extract "calibration" 0xf000 0
				ath9k_patch_mac_crc $(macaddr_add $(mtd_get_mac_ascii uboot-env ethaddr) +2) 0x20c
				;;
			avm,fritz3370-rev2-hynix|\
			avm,fritz3370-rev2-micron|\
			avm,fritz7362sl)
				caldata_extract_reverse "urlader" 0x1541 0x440
				;;
			avm,fritz7312|avm,fritz7320|avm,fritz7360sl)
				ath9k_eeprom_extract "urlader" 0x985 0
				;;
			avm,fritz7412)
				/usr/bin/fritz_cal_extract -i 1 -s 0x1e000 -e 0x207 -l 4096 -o /lib/firmware/$FIRMWARE $(find_mtd_chardev "urlader")
				;;
			tplink,tdw8970|tplink,tdw8980)
				ath9k_eeprom_extract "boardconfig" 0x21000 0
				;;
			*)
				caldata_die "board $board is not supported yet"
				;;
		esac
		;;
esac