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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Google Inc.
* Copyright (C) 2015-2016 Intel Corporation.
* Copyright (C) 2017-2018 Online SAS.
*
* 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.
*/
#include <cbmem.h>
#include <console/console.h>
#include <string.h>
#include <soc/hob_mem.h>
#include <smbios.h>
#include <memory_info.h>
#include <soc/ramstage.h>
/* Save the DIMM information for SMBIOS table 17 */
void soc_save_dimm_info(void)
{
int channel;
const CHANNEL_INFO *channel_info;
int dimm;
const DIMM_INFO *dimm_info;
int dimm_max;
int index;
struct memory_info *mem_info;
const FSP_SMBIOS_MEMORY_INFO *memory_info_hob;
/* Get the memory info HOB */
memory_info_hob = soc_get_fsp_smbios_memory_info_hob();
if (memory_info_hob == NULL)
return;
/* Display the data in the FSP_SMBIOS_MEMORY_INFO HOB */
if (IS_ENABLED(CONFIG_DISPLAY_HOBS))
soc_display_fsp_smbios_memory_info_hob(memory_info_hob);
/*
* Allocate CBMEM area for DIMM information used to populate SMBIOS
* table 17
*/
mem_info = cbmem_add(CBMEM_ID_MEMINFO, sizeof(*mem_info));
printk(BIOS_DEBUG, "CBMEM entry for DIMM info: 0x%p\n", mem_info);
if (mem_info == NULL)
return;
memset(mem_info, 0, sizeof(*mem_info));
/* Describe the first N DIMMs in the system */
index = 0;
dimm_max = ARRAY_SIZE(mem_info->dimm);
for (channel = 0; channel < memory_info_hob->ChannelCount; channel++) {
if (index >= dimm_max)
break;
channel_info = &memory_info_hob->ChannelInfo[channel];
for (dimm = 0; dimm < channel_info->DimmCount; dimm++) {
if (index >= dimm_max)
break;
dimm_info = &channel_info->DimmInfo[dimm];
/* Populate the DIMM information */
if (!dimm_info->SizeInMb)
continue;
mem_info->dimm[index].dimm_size =
dimm_info->SizeInMb;
mem_info->dimm[index].ddr_type =
memory_info_hob->MemoryType;
mem_info->dimm[index].ddr_frequency =
memory_info_hob->MemoryFrequencyInMHz;
mem_info->dimm[index].channel_num =
channel_info->ChannelId;
mem_info->dimm[index].dimm_num =
dimm_info->DimmId;
strncpy((char *)
mem_info->dimm[index].module_part_number,
(char *)dimm_info->ModulePartNum, 18);
mem_info->dimm[index].mod_id =
dimm_info->MfgId;
switch (memory_info_hob->DataWidth) {
default:
case 8:
mem_info->dimm[index].bus_width =
MEMORY_BUS_WIDTH_8;
break;
case 16:
mem_info->dimm[index].bus_width =
MEMORY_BUS_WIDTH_16;
break;
case 32:
mem_info->dimm[index].bus_width =
MEMORY_BUS_WIDTH_32;
break;
case 64:
mem_info->dimm[index].bus_width =
MEMORY_BUS_WIDTH_64;
break;
case 128:
mem_info->dimm[index].bus_width =
MEMORY_BUS_WIDTH_128;
break;
}
/* Add any mainboard specific information */
mainboard_add_dimm_info(mem_info, channel, dimm, index);
index++;
}
}
mem_info->dimm_cnt = index;
printk(BIOS_DEBUG, "%d DIMMs found\n", mem_info->dimm_cnt);
}
/* Add any mainboard specific information */
__attribute__((weak)) void mainboard_add_dimm_info(struct memory_info *mem_info,
int channel, int dimm,
int index)
{
printk(BIOS_DEBUG, "WEAK: %s/%s called\n", __FILE__, __func__);
}
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