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/*
* This file is part of the coreboot project.
*
* Copyright 2014 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc.
*/
#include <boardid.h>
#include <console/console.h>
#include <gpio.h>
uint8_t board_id(void)
{
static int id = -1;
if (id < 0) {
id = gpio_get(GPIO(Q3)) << 0 |
gpio_get(GPIO(T1)) << 1 |
gpio_get(GPIO(X1)) << 2 |
gpio_get(GPIO(X4)) << 3;
printk(BIOS_SPEW, "Board ID: %#x.\n", id);
}
return id;
}
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