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/*
* This file is part of the coreboot project.
*
* Copyright 2015 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.
*/
#ifndef CONSOLE_SPI_H
#define CONSOLE_SPI_H 1
#include <rules.h>
#include <stdint.h>
void spiconsole_init(void);
void spiconsole_tx_byte(unsigned char c);
#define __CONSOLE_SPI_ENABLE__ (IS_ENABLED(CONFIG_SPI_CONSOLE) && \
(ENV_RAMSTAGE || (ENV_SMM && IS_ENABLED(CONFIG_DEBUG_SMI))))
#if __CONSOLE_SPI_ENABLE__
static inline void __spiconsole_init(void) { spiconsole_init(); }
static inline void __spiconsole_tx_byte(u8 data)
{
spiconsole_tx_byte(data);
}
#else
static inline void __spiconsole_init(void) {}
static inline void __spiconsole_tx_byte(u8 data) {}
#endif /* __CONSOLE_SPI_ENABLE__ */
#define MAX_MSG_LENGTH 128
#define EM100_DEDICATED_CMD 0x11
#define EM100_UFIFO_CMD 0xC0
#define EM100_MSG_SIGNATURE 0x47364440
enum em100_message_types {
EM100_MSG_CHECKPOINT_1B = 0x01,
EM100_MSG_CHECKPOINT_2B,
EM100_MSG_CHECKPOINT_4B,
EM100_MSG_HEX,
EM100_MSG_ASCII,
EM100_MSG_TIMESTAMP,
EM100_MSG_LOOKUP
};
struct em100_msg_header {
uint8_t spi_command;
uint8_t reserved;
uint8_t em100_command;
uint32_t msg_signature;
uint8_t msg_type;
uint8_t msg_length;
} __attribute__ ((packed));
struct em100_msg {
struct em100_msg_header header;
char data[MAX_MSG_LENGTH];
} __attribute__ ((packed));
#endif /* CONSOLE_SPI_H */
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