#!/bin/sh

p54spi_eeprom_clean() {
	rm -f /tmp/wlan-iq-align /tmp/wlan-tx-gen2
}

p54spi_eeprom_die() {
	echo "$*"
	p54spi_eeprom_clean
	exit 1
}

p54spi_eeprom_extract() {
	[ -x /usr/bin/calvaria -a -x /usr/bin/cal2p54 ] && {
		/usr/bin/calvaria -p -n wlan-iq-align -i last /dev/mtdblock1 >/tmp/wlan-iq-align ||\
			p54spi_eeprom_die "p54spi EEPROM: Failed to extract wlan-iq-align"
		/usr/bin/calvaria -p -n wlan-tx-gen2 -i last /dev/mtdblock1 >/tmp/wlan-tx-gen2 ||\
			p54spi_eeprom_die "p54spi EEPROM: Failed to extract wlan-tx-gen2"
		/usr/bin/cal2p54 /tmp/wlan-tx-gen2 /tmp/wlan-iq-align >/lib/firmware/3826.eeprom ||\
			p54spi_eeprom_die "p54spi EEPROM: Failed to generate EEPROM"
		p54spi_eeprom_clean
	}
}

[ "$FIRMWARE" = "3826.eeprom" ] && {
	[ -z "$(grep -e 'Nokia N810' /proc/cpuinfo)" ] || {
		[ -e /lib/firmware/3826.eeprom ] ||\
			p54spi_eeprom_extract
	}
}