smbios.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <smbios.h>
#include "smbios.h"
#include <string.h>
#include <commonlib/helpers.h>
#include <device/dram/ddr3.h>
#include <dimm_info_util.h>
 
#define EXTENSION_BUS_WIDTH_8BITS       8
 
/* Fill the SMBIOS memory information from FSP MEM_INFO_DATA_HOB in CBMEM.*/
void dimm_info_fill(struct dimm_info *dimm, u32 dimm_capacity, u8 ddr_type,
                u32 frequency, u8 rank_per_dimm, u8 channel_id, u8 dimm_id,
                const char *module_part_num, size_t module_part_number_size,
                const u8 *module_serial_num, u16 data_width, u32 vdd_voltage,
                bool ecc_support, u16 mod_id, u8 mod_type)
{
        dimm->mod_id = mod_id;
        dimm->mod_type = mod_type;
        dimm->dimm_size = dimm_capacity;
        dimm->ddr_type = ddr_type;
        dimm->ddr_frequency = frequency;
        dimm->rank_per_dimm = rank_per_dimm;
        dimm->channel_num = channel_id;
        dimm->dimm_num = dimm_id;
        if (vdd_voltage > 0xFFFF) {
                dimm->vdd_voltage = 0xFFFF;
        } else {
                dimm->vdd_voltage = vdd_voltage;
        }
 
        strncpy((char *)dimm->module_part_number,
                        module_part_num,
                        MIN(sizeof(dimm->module_part_number),
                                module_part_number_size));
        if (module_serial_num)
                memcpy(dimm->serial, module_serial_num,
                       DIMM_INFO_SERIAL_SIZE);
 
        uint16_t total_width = data_width;
 
        if (ecc_support)
                total_width += EXTENSION_BUS_WIDTH_8BITS;
 
        dimm->bus_width = smbios_bus_width_to_spd_width(ddr_type, total_width, data_width);
}