src/southbridge/amd/cimx/sb700/smbus_spd.h

/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2011 Advanced Micro Devices, 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 _SMBUS_SPD_H_
#define _SMBUS_SPD_H_

#define READ_BIT				0x01

#define SMBUS_INTERRUPT_MASK	0x02
#define HOSTBUSY_MASK			0x01

#define SMBUS_READ_BYTE_COMMAND	0x48
#define SMBUS_READ_COMMAND		0x44

#define SMBUS_WRITE_BYTE_COMMAND	0x48

#define MAX_READ_TSC_COUNT		(2000000000 / 10)

#define PMIO_INDEX_REG			0xCD6
#define PMIO_DATA_REG			0xCD7

#define SMBUS_BAR_LOW_BYTE		0x2C
#define SMBUS_BAR_HIGH_BYTE		0x2D

#define SMBUS_STATUS_REG		0x00
#define SMBUS_SLAVE_STATUS_REG	0x01
#define SMBUS_COMMAND_REG		0x02
#define SMBUS_CONTROL_REG		0x03
#define SMBUS_HOST_CMD_REG		0x04
#define SMBUS_DATA0_REG			0x05
#define SMBUS_CLOCK_REG			0x0E

#define STATUS__COMPLETED_SUCCESSFULLY	0x02

#define SMBUS_FREQUENCY_CONST	66000000 / 4

/*
 * This function prototype is only used by the AMD Dinar mainboard.  The SMBus
 * write is used to select which socket's SPD will be read by the subsequent
 * SPD read call.  This function is being placed in the F15 wrapper code with
 * the other SPD read functions because the next step of the SPD read clean-up
 * will be to move the SMBus read/write functions into the southbridge to make
 * them more generic.  Having the writeSmbusByte() function in the same file as
 * the readSmbusByte() function will ensure that the writeSmbusByte() function
 * is not overlooked.
 */
UINT8 writeSmbusByte(UINT16 iobase, UINT8 address, UINT8 buffer, int offset);

#endif