/* * 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 <stdint.h> void spiconsole_init(void); void spiconsole_tx_byte(unsigned char c); #define __CONSOLE_SPI_ENABLE__ (CONFIG(SPI_CONSOLE) && \ (ENV_RAMSTAGE || (ENV_SMM && 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; } __packed; struct em100_msg { struct em100_msg_header header; char data[MAX_MSG_LENGTH]; } __packed; #endif /* CONSOLE_SPI_H */