# ROM preparation for boards with Intel ICH9
#
# Copyright (C) 2015  Patrick "P. J." McDermott
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

ich9_prepare_rom()
{
	local mac=''
	local rom_size=

	dbg 'Generating FD and GbE flash regions for Intel ICH9'

	# Get current MAC address.
	for iface in /sys/class/net/*; do
		[ "x$(cat "${iface}/device/vendor")" = 'x0x8086' ] || continue
		[ "x$(cat "${iface}/device/device")" = 'x0x10f5' ] || continue
		mac="$(cat "${iface}/address")"
		break
	done

	# Ask for MAC address.
	while :; do
		mac="$(show_prompt 'Enter MAC address' "${mac}" 17)"
		case "${mac}" in
			*[!0-9a-zA-Z:]*)
				continue
				;;
			??:??:??:??:??:??)
				break
				;;
		esac
	done
	dbg 'MAC address: %s' "${mac}"

	# Create temporary directory.
	if ! mkdir "$(get_temp_dir)/ich9"; then
		err 'Failed to create temporary directory'
		return 1
	fi

	# Generate FD and GbE flash regions.
	if ! (cd "$(get_temp_dir)/ich9" && \
			${ICH9GEN} --macaddress "${mac}" >/dev/null 2>&1); then
		err 'Failed to generate FD and GbE flash regions'
		rm_temp 'ich9'
		return 1
	fi

	# Detect ROM size.
	case "$(wc -c "$(get_temp_dir)/rom" | cut -d ' ' -f 1)" in
		4194304)
			rom_size=4
			;;
		8388608)
			rom_size=8
			;;
		*)
			err 'Invalid ROM size'
			rm_temp 'ich9'
			return 1
			;;
	esac

	# Insert FD and GbE flash regions into ROM.
	if ! dd if="$(get_temp_dir)/ich9/ich9fdgbe_${rom_size}m.bin" \
			of="$(get_temp_dir)/rom" bs=1 count=12k conv=notrunc
	then
		err 'Failed to insert FD and GbE flash regions into ROM'
		rm_temp 'ich9'
		return 1
	fi

	# Clean up.
	rm_temp 'ich9'

	return 0
}