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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2013 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.
*/
#ifndef _BAYTRAIL_SPI_H_
#define _BAYTRAIL_SPI_H_
#include <stdint.h>
/* These registers live behind SPI_BASE_ADDRESS. */
#define HSFSTS 0x04
# define FLOCKDN (0x1 << 15)
#define PREOP 0x94
#define OPTYPE 0x96
#define OPMENU0 0x98
#define OPMENU1 0x9c
#define LVSCC 0xc4
# define VCL (0x1 << 23)
# define EO(x) (((x) & 0xff) << 8)
# define WG_1_BYTE (0x0 << 2)
# define WG_64_BYTE (0x1 << 2)
# define BES_256_BYTE (0x0 << 0)
# define BES_4_KB (0x1 << 0)
# define BES_8_KB (0x2 << 0)
# define BES_64_KB (0x3 << 0)
#define UVSCC 0xc8
#define SCS 0xf8
# define SMIWPEN (0x1 << 7)
#define BCR 0xfc
# define EISS (0x1 << 5)
# define SRC_MASK (0x3 << 2)
# define SRC_CACHE_NO_PREFETCH (0x0 << 2)
# define SRC_NO_CACHE_NO_PREFETCH (0x1 << 2)
# define SRC_CACHE_PREFETCH (0x2 << 2)
# define BCR_LE (0x1 << 1)
# define BCR_WPD (0x1 << 0)
/*
* SPI lockdown configuration.
*/
struct spi_config {
uint16_t preop;
uint16_t optype;
uint32_t opmenu[2];
uint32_t lvscc;
uint32_t uvscc;
};
/* Return 0 on success < 0 on failure. */
int mainboard_get_spi_config(struct spi_config *cfg);
#endif /* _BAYTRAIL_SPI_H_ */
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