4b6f262ead
The dimm_info and memory_info structs are used in devices that don't strictly use DIMMs. Those platforms have the DRAM soldered down so there's no DIMM part number that encapsulates the DRAMs used in the DIMM. The full part number is desired to be exposed in the SMBIOS tables. As such extend DIMM_INFO_PART_NUMBER_SIZE to 33 to accommodate longer part numbers 'MT53B256M32D1NP-053 WT:C' is one of the longer part numbers that are desired to be maintained. BUG=b:115697578 Change-Id: I0c39dd1d1c2f0776d70d8c4d8d56719779ff82ae Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/28978 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jett Rink <jettrink@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
97 lines
2.2 KiB
C
97 lines
2.2 KiB
C
/*
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* Memory information
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*
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* Copyright (C) 2014, Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _MEMORY_INFO_H_
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#define _MEMORY_INFO_H_
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#include <stdint.h>
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#define DIMM_INFO_SERIAL_SIZE 4
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#define DIMM_INFO_PART_NUMBER_SIZE 33
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#define DIMM_INFO_TOTAL 8 /* Maximum num of dimm is 8 */
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/**
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* If this table is filled and put in CBMEM,
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* then these info in CBMEM will be used to generate smbios type 17 table
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*
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* Values are specified according to the JEDEC SPD Standard.
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*/
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struct dimm_info {
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/*
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* Size of the module in MiB.
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*/
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uint32_t dimm_size;
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/*
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* SMBIOS (not SPD) device type.
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*
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* See the smbios.h smbios_memory_device_type enum.
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*/
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uint16_t ddr_type;
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uint16_t ddr_frequency;
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uint8_t rank_per_dimm;
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uint8_t channel_num;
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uint8_t dimm_num;
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uint8_t bank_locator;
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/*
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* SPD serial number.
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*/
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uint8_t serial[DIMM_INFO_SERIAL_SIZE];
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/*
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* The last byte is '\0' for the end of string
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*
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* Must contain only printable ASCII.
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*/
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uint8_t module_part_number[DIMM_INFO_PART_NUMBER_SIZE];
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/*
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* SPD Manufacturer ID
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*/
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uint16_t mod_id;
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/*
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* SPD Module Type.
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*
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* See spd.h for valid values.
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*
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* e.g., SPD_RDIMM, SPD_SODIMM, SPD_MICRO_DIMM
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*/
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uint8_t mod_type;
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/*
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* SPD bus width.
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*
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* Bits 0 - 2 encode the primary bus width:
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* 0b000 = 8 bit width
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* 0b001 = 16 bit width
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* 0b010 = 32 bit width
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* 0b011 = 64 bit width
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*
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* Bits 3 - 4 encode the extension bits (ECC):
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* 0b00 = 0 extension bits
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* 0b01 = 8 bit of ECC
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*
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* e.g.,
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* 64 bit bus with 8 bits of ECC (72 bits total): 0b1011
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* 64 bit bus with 0 bits of ECC (64 bits total): 0b0011
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*
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* See the smbios.h smbios_memory_bus_width enum.
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*/
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uint8_t bus_width;
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} __packed;
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struct memory_info {
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uint8_t dimm_cnt;
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struct dimm_info dimm[DIMM_INFO_TOTAL];
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} __packed;
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#endif
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