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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2017 Advanced Micro Devices, 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 <bootblock_common.h>
#include <soc/gpio.h>
#include <soc/southbridge.h>
#include <variant/ec.h>
#include <variant/gpio.h>
void bootblock_mainboard_early_init(void)
{
size_t num_gpios;
const struct soc_amd_gpio *gpios;
/* Enable the EC as soon as we have visibility */
mainboard_ec_init();
gpios = variant_early_gpio_table(&num_gpios);
sb_program_gpios(gpios, num_gpios);
}
void bootblock_mainboard_init(void)
{
if (IS_ENABLED(CONFIG_EM100)) {
/*
* We should be able to rely on defaults, but it seems safer
* to explicitly set up these registers.
*/
sb_read_mode(SPI_READ_MODE_NOM);
sb_set_spi100(SPI_SPEED_16M, /* Normal */
SPI_SPEED_16M, /* Fast */
SPI_SPEED_16M, /* AltIO */
SPI_SPEED_66M); /* TPM */
} else {
/*
* W25Q128FW Setup
* Normal Read 40MHz
* Fast Read 104MHz
* Dual Read IO (1-2-2)
*/
sb_read_mode(SPI_READ_MODE_DUAL122);
/* Set SPI speeds before verstage. Needed for TPM */
sb_set_spi100(SPI_SPEED_33M, /* Normal */
SPI_SPEED_66M, /* Fast */
SPI_SPEED_66M, /* AltIO */
SPI_SPEED_66M); /* TPM */
}
/* Setup TPM decode before verstage */
sb_tpm_decode_spi();
}
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