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spdDDR4_DDIMM.H
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spdDDR4_DDIMM.H
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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/vpd/spdDDR4_DDIMM.H $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2013,2019 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
#ifndef __SPDDDR4_DDIMM_H
#define __SPDDDR4_DDIMM_H
/**
* @file spdDDR4_DDIMM.H
*
* @brief Provides the DDR4 field information for DDIMM
*
*/
// ----------------------------------------------
// Includes
// ----------------------------------------------
#include "spd.H"
namespace SPD
{
/**
* @brief Pre-defined lookup table for DDR4 keywords and the
* information needed to read that data from the SPD data.
*/
const KeywordData ddr4DDIMMData[] =
{
// ----------------------------------------------------------------------------------
// NOTE: This list must remain an ordered list! The Keyword must be in numerical
// order (values defined in spdenums.H) to allow efficient searching, a unit
// test enforces this.
// ----------------------------------------------------------------------------------
// Bit order for each byte is [7:0] as defined by the JEDEC spec (little endian)
//
// For multi-byte fields, the offset specifies the byte that is placed at offset 0 in
// the output buffer.
// - If SpecialCase=false then the next byte in SPD is placed at the next offset in
// the output buffer until complete. Any bitmask/shift only affects the byte at
// offset 0
// - If SpecialCase=true then spd.C handles the field in a custom way (e.g. working
// backwards through SPD bytes).
// Typically for a 2-byte field consisting of (LSB,MSB), the offset points to MSB and
// it is a SpecialCase where spd.C first copies the MSB to the output buffer then
// copies the previous byte (LSB) to the output buffer (big endian).
// ------------------------------------------------------------------------------------------
// Keyword offset size Bitmsk Shift Spec Writ- Mod
// Number Case able Spec
// ------------------------------------------------------------------------------------------
//
// Normal fields supported on both DDR3 and DDR4
{ SPD_BYTES_TOTAL, 0x00, 0x01, 0x70, 0x04, false, false, ALL },
{ SPD_BYTES_USED, 0x00, 0x01, 0x0F, 0x00, false, false, ALL },
{ SPD_MAJOR_REVISION, 0x01, 0x01, 0xF0, 0x04, false, false, ALL },
{ SPD_MINOR_REVISION, 0x01, 0x01, 0x0F, 0x00, false, false, ALL },
{ BASIC_MEMORY_TYPE, 0x02, 0x01, 0x00, 0x00, false, false, ALL },
{ CUSTOM, 0x03, 0x01, 0x80, 0x07, false, false, ALL },
{ MODULE_TYPE, 0x03, 0x01, 0x0F, 0x00, false, false, ALL },
{ DENSITY, 0x04, 0x01, 0x0F, 0x00, false, false, ALL },
{ ROW_ADDRESS, 0x05, 0x01, 0x38, 0x03, false, false, ALL },
{ COL_ADDRESS, 0x05, 0x01, 0x07, 0x00, false, false, ALL },
{ MODULE_RANKS, 0x0c, 0x01, 0x38, 0x03, false, false, ALL },
{ MODULE_DRAM_WIDTH, 0x0c, 0x01, 0x07, 0x00, false, false, ALL },
{ MODULE_MEMORY_BUS_WIDTH, 0x0d, 0x01, 0x1f, 0x00, false, false, ALL },
{ MODULE_MEMORY_BUS_WIDTH_EXT, 0x0d, 0x01, 0x18, 0x03, false, false, ALL },
{ MODULE_MEMORY_BUS_WIDTH_PRI, 0x0d, 0x01, 0x07, 0x00, false, false, ALL },
{ TCK_MIN, 0x12, 0x01, 0x00, 0x00, false, false, ALL },
{ MIN_CAS_LATENCY, 0x18, 0x01, 0x00, 0x00, false, false, ALL },
{ TRCD_MIN, 0x19, 0x01, 0x00, 0x00, false, false, ALL },
{ TRP_MIN, 0x1a, 0x01, 0x00, 0x00, false, false, ALL },
{ TRC_MIN, 0x1b, 0x02, 0xF0, 0x04, true, false, ALL },
{ TRAS_MIN, 0x1b, 0x02, 0x0F, 0x00, false, false, ALL },
{ TFAW_MIN, 0x24, 0x02, 0x0F, 0x00, false, false, ALL },
{ SDRAM_OPTIONAL_FEATURES, 0x07, 0x01, 0x00, 0x00, false, false, ALL },
{ SDRAM_THERMAL_REFRESH_OPTIONS, 0x08, 0x01, 0x00, 0x00, false, false, ALL },
{ MODULE_THERMAL_SENSOR, 0x0e, 0x01, 0x00, 0x00, false, false, ALL },
{ THERMAL_SENSOR_PRESENT, 0x0e, 0x01, 0x80, 0x07, false, false, ALL },
{ SDRAM_DEVICE_TYPE , 0x06, 0x01, 0x80, 0x07, false, false, ALL },
{ SDRAM_DIE_COUNT, 0x06, 0x01, 0x70, 0x04, false, false, ALL },
{ SDRAM_DEVICE_TYPE_SIGNAL_LOADING, 0x06, 0x01, 0x03, 0x00, false, false, ALL },
{ TCKMIN_FINE_OFFSET, 0x7d, 0x01, 0x00, 0x00, false, false, ALL },
{ TAAMIN_FINE_OFFSET, 0x7b, 0x01, 0x00, 0x00, false, false, ALL },
{ TRCDMIN_FINE_OFFSET, 0x7a, 0x01, 0x00, 0x00, false, false, ALL },
{ TRPMIN_FINE_OFFSET, 0x79, 0x01, 0x00, 0x00, false, false, ALL },
{ TRCMIN_FINE_OFFSET, 0x78, 0x01, 0x00, 0x00, false, false, ALL },
// Note - All data below 128 is common across all DDR4 DIMMs, except DDIMM
{ MODULE_SERIAL_NUMBER, 0x205, 0x04, 0x00, 0x00, false, false, ALL },
{ MODULE_PART_NUMBER, 0x209, 0x30, 0x00, 0x00, false, false, ALL },
// Normal fields supported on DDR4 only
{ BANK_GROUP_BITS, 0x04, 0x01, 0xC0, 0x06, false, false, ALL },
{ BANK_ADDRESS_BITS_DDR4, 0x04, 0x01, 0x30, 0x04, false, false, ALL },
{ MODULE_NOMINAL_VOLTAGE_DDR4, 0x0b, 0x01, 0x3F, 0x00, false, false, ALL },
{ TIMEBASES_MTB, 0x11, 0x01, 0x0C, 0x02, false, false, ALL },
{ TIMEBASES_FTB, 0x11, 0x01, 0x03, 0x00, false, false, ALL },
{ TCK_MAX, 0x13, 0x01, 0x00, 0x00, false, false, ALL },
{ CAS_LATENCIES_SUPPORTED_DDR4, 0x17, 0x04, 0x00, 0x00, true, false, ALL },
{ TRFC1_MIN, 0x1f, 0x02, 0x00, 0x00, true, false, ALL },
{ TRFC2_MIN, 0x21, 0x02, 0x00, 0x00, true, false, ALL },
{ TRFC4_MIN, 0x23, 0x02, 0x00, 0x00, true, false, ALL },
{ TRRDS_MIN, 0x26, 0x01, 0x00, 0x00, false, false, ALL },
{ TRRDL_MIN, 0x27, 0x01, 0x00, 0x00, false, false, ALL },
{ TCCDL_MIN, 0x28, 0x01, 0x00, 0x00, false, false, ALL },
{ CONNECTOR_SDRAM_MAP, 0x3C, 0x12, 0x00, 0x00, false, false, ALL },
{ TCCDL_FINE_OFFSET, 0x75, 0x01, 0x00, 0x00, false, false, ALL },
{ TRRDL_FINE_OFFSET, 0x76, 0x01, 0x00, 0x00, false, false, ALL },
{ TRRDS_FINE_OFFSET, 0x77, 0x01, 0x00, 0x00, false, false, ALL },
{ TCKMAX_FINE_OFFSET, 0x7c, 0x01, 0x00, 0x00, false, false, ALL },
{ BASE_CONFIG_CRC, 0x7f, 0x02, 0x00, 0x00, true, false, ALL },
// Module Specific fields supported on DDR4 only
{ ENTIRE_SPD, 0x00, 0x280, 0x00, 0x00, false, false, ALL },
//---------------------------------------------------------------------------------------
};
}; // end SPD namespace
#endif // __SPDDDR4_DDR4_H