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/*
* spd.h: Definitions for Serial Presence Detect (SPD) data
* stored on SDRAM modules
*
* Copyright (C) 2005 Digital Design Corporation
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __SPD_H_DEFINED
#define __SPD_H_DEFINED
// Byte numbers
#define SPD_MEMORY_TYPE 2
#define SPD_NUM_ROWS 3
#define SPD_NUM_COLUMNS 4
#define SPD_NUM_DIMM_BANKS 5
#define SPD_MODULE_DATA_WIDTH_LSB 6
#define SPD_MODULE_DATA_WIDTH_MSB 7
#define SPD_MODULE_VOLTAGE 8
#define SPD_MIN_CYCLE_TIME_AT_CAS_MAX 9
#define SPD_DIMM_CONFIG_TYPE 11
#define SPD_REFRESH 12
#define SPD_PRIMARY_DRAM_WIDTH 13
#define SPD_SUPPORTED_BURST_LENGTHS 16
#define SPD_NUM_BANKS_PER_DRAM 17
#define SPD_ACCEPTABLE_CAS_LATENCIES 18
#define SPD_MODULE_ATTRIBUTES 21
#define SPD_MIN_CYCLE_TIME_AT_CAS_REDUCED_05 23
#define SPD_MIN_CYCLE_TIME_AT_CAS_REDUCED_10 25
#define SPD_MIN_ROW_PRECHARGE_TIME 27
#define SPD_MIN_RAS_TO_CAS_DELAY 29
#define SPD_MIN_ACTIVE_TO_PRECHARGE_DELAY 30
#define SPD_ADDRESS_CMD_HOLD 33
// SPD_MEMORY_TYPE values
#define MEMORY_TYPE_SDRAM_DDR 7
// SPD_MODULE_VOLTAGE values
#define SPD_VOLTAGE_SSTL2 4
// SPD_DIMM_CONFIG_TYPE values
#define ERROR_SCHEME_NONE 0
#define ERROR_SCHEME_PARITY 1
#define ERROR_SCHEME_ECC 2
// SPD_ACCEPTABLE_CAS_LATENCIES values
#define SPD_CAS_LATENCY_1_0 0x01
#define SPD_CAS_LATENCY_1_5 0x02
#define SPD_CAS_LATENCY_2_0 0x04
#define SPD_CAS_LATENCY_2_5 0x08
#define SPD_CAS_LATENCY_3_0 0x10
#define SPD_CAS_LATENCY_3_5 0x20
#define SPD_CAS_LATENCY_4_0 0x40
// SPD_SUPPORTED_BURST_LENGTHS values
#define SPD_BURST_LENGTH_1 1
#define SPD_BURST_LENGTH_2 2
#define SPD_BURST_LENGTH_4 4
#define SPD_BURST_LENGTH_8 8
#define SPD_BURST_LENGTH_PAGE (1<<7)
// SPD_MODULE_ATTRIBUTES values
#define MODULE_BUFFERED 1
#define MODULE_REGISTERED 2
#endif // __SPD_H_DEFINED
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