1 files changed, 72 insertions, 0 deletions
diff --git a/src/include/console/spi.h b/src/include/console/spi.h
new file mode 100644
index 0000000000..c47fec541a
--- /dev/null
+++ b/src/include/console/spi.h
@@ -0,0 +1,72 @@
+/*
+ * 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.
+ *
+ * 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 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__	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;
+} __attribute__ ((packed));
+
+struct em100_msg {
+	struct em100_msg_header header;
+	char data[MAX_MSG_LENGTH];
+} __attribute__ ((packed));
+
+
+
+#endif /* CONSOLE_SPI_H */