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/*
* Copyright (C) 2012 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., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <stdlib.h>
#include <gpio.h>
#include <device/device.h>
#include <console/console.h>
#include <cpu/samsung/exynos5-common/gpio.h>
#include <cpu/samsung/exynos5250/gpio.h>
#include "mainboard.h"
#define SNOW_BOARD_ID0_GPIO 88 /* GPD0, pin 0 */
#define SNOW_BOARD_ID1_GPIO 89 /* GPD0, pin 1 */
struct {
enum mvl3 id0, id1;
enum snow_board_config config;
} snow_id_map[] = {
/* ID0 ID1 config */
{ LOGIC_0, LOGIC_0, SNOW_CONFIG_SAMSUNG_MP },
{ LOGIC_0, LOGIC_1, SNOW_CONFIG_ELPIDA_MP },
{ LOGIC_1, LOGIC_0, SNOW_CONFIG_SAMSUNG_DVT },
{ LOGIC_1, LOGIC_1, SNOW_CONFIG_ELPIDA_DVT },
{ LOGIC_0, LOGIC_Z, SNOW_CONFIG_SAMSUNG_PVT },
{ LOGIC_1, LOGIC_Z, SNOW_CONFIG_ELPIDA_PVT },
{ LOGIC_Z, LOGIC_0, SNOW_CONFIG_SAMSUNG_MP },
{ LOGIC_Z, LOGIC_Z, SNOW_CONFIG_ELPIDA_MP },
{ LOGIC_Z, LOGIC_1, SNOW_CONFIG_RSVD },
};
int board_get_config(void)
{
int i;
int id0, id1;
enum snow_board_config config = SNOW_CONFIG_UNKNOWN;
id0 = gpio_read_mvl3(SNOW_BOARD_ID0_GPIO);
id1 = gpio_read_mvl3(SNOW_BOARD_ID1_GPIO);
if (id0 < 0 || id1 < 0)
return -1;
printk(BIOS_DEBUG, "%s: id0: %u, id1: %u\n", __func__, id0, id1);
for (i = 0; i < ARRAY_SIZE(snow_id_map); i++) {
if (id0 == snow_id_map[i].id0 && id1 == snow_id_map[i].id1) {
config = snow_id_map[i].config;
break;
}
}
return config;
}
#if 0
struct chip_operations mainboard_ops = {
.name = "Samsung/Google ARM Chromebook",
.enable_dev = mainboard_enable,
};
#endif
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