/*
 * This file is part of the coreboot project.
 *
 * Copyright 2018 Google Inc.
 *
 * 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; version 2 of the License.
 *
 * 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.
 */

#include <baseboard/variants.h>
#include <gpio.h>
#include <variant/sku.h>

uint32_t variant_board_sku(void)
{
#if ENV_ROMSTAGE
	uint32_t sku_id = SKU_UNKNOWN;
#else
	static uint32_t sku_id = SKU_UNKNOWN;

	if (sku_id != SKU_UNKNOWN)
		return sku_id;
#endif

	/*
	*  Nautilus uses GPP_B20 to determine SKU
	*  0 - Wifi SKU
	*  1 - LTE SKU
	*/
	gpio_input_pulldown(GPP_B20);
	if (!gpio_get(GPP_B20))
		sku_id = SKU_0_NAUTILUS;
	else
		sku_id = SKU_1_NAUTILUS_LTE;

	return sku_id;
}