2015-09-28 23:27:24 +02:00
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/*
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* This file is part of the coreboot project.
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*
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* Copyright 2015 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef CONSOLE_SPI_H
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#define CONSOLE_SPI_H 1
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#include <stdint.h>
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void spiconsole_init(void);
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void spiconsole_tx_byte(unsigned char c);
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2017-05-18 16:12:07 +02:00
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#define __CONSOLE_SPI_ENABLE__ (IS_ENABLED(CONFIG_SPI_CONSOLE) && \
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(ENV_RAMSTAGE || (ENV_SMM && IS_ENABLED(CONFIG_DEBUG_SMI))))
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2015-09-28 23:27:24 +02:00
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#if __CONSOLE_SPI_ENABLE__
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static inline void __spiconsole_init(void) { spiconsole_init(); }
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2017-03-08 02:45:12 +01:00
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static inline void __spiconsole_tx_byte(u8 data)
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{
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spiconsole_tx_byte(data);
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}
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2015-09-28 23:27:24 +02:00
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#else
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static inline void __spiconsole_init(void) {}
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static inline void __spiconsole_tx_byte(u8 data) {}
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#endif /* __CONSOLE_SPI_ENABLE__ */
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#define MAX_MSG_LENGTH 128
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#define EM100_DEDICATED_CMD 0x11
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#define EM100_UFIFO_CMD 0xC0
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#define EM100_MSG_SIGNATURE 0x47364440
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enum em100_message_types {
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EM100_MSG_CHECKPOINT_1B = 0x01,
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EM100_MSG_CHECKPOINT_2B,
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EM100_MSG_CHECKPOINT_4B,
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EM100_MSG_HEX,
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EM100_MSG_ASCII,
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EM100_MSG_TIMESTAMP,
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EM100_MSG_LOOKUP
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};
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struct em100_msg_header {
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uint8_t spi_command;
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uint8_t reserved;
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uint8_t em100_command;
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uint32_t msg_signature;
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uint8_t msg_type;
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uint8_t msg_length;
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2017-07-13 02:20:27 +02:00
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} __packed;
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2015-09-28 23:27:24 +02:00
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struct em100_msg {
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struct em100_msg_header header;
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char data[MAX_MSG_LENGTH];
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2017-07-13 02:20:27 +02:00
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} __packed;
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2015-09-28 23:27:24 +02:00
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#endif /* CONSOLE_SPI_H */
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