blob: a978e0ff864498c24f9bbbce80efd9c0f67735e6 [file] [log] [blame]
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2016-2018 Intel Corporation.
*
* 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 "board_id.h"
#include <ec/acpi/ec.h>
#include <stdint.h>
#include <stddef.h>
/*
* Get Board info via EC I/O port write/read
*/
int get_ec_boardinfo(void)
{
MAYBE_STATIC int ec_info = -1;
if (ec_info < 0) {
uint8_t buffer[2];
uint8_t index;
if (send_ec_command(EC_FAB_ID_CMD) == 0) {
for (index = 0; index < sizeof(buffer); index++)
buffer[index] = recv_ec_data();
ec_info = (buffer[1] << 8) | buffer[0];
}
}
return ec_info;
}
/* Get spd index */
int get_spd_index(u8 *spd_index)
{
int ec_info = get_ec_boardinfo();
if (ec_info >= 0) {
*spd_index = ((uint16_t)ec_info >> 5) & 0x7;
return 0;
}
return -1;
}
/* Get Board Id */
int get_board_id(void)
{
int ec_info = get_ec_boardinfo();
if (ec_info >= 0)
return ((uint16_t)ec_info >> 8) & 0xff;
return -1;
}