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/*
* This file is part of the coreboot project.
*
* Copyright 2017 Google Inc.
*
* 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 <fsp/util.h>
#include <memory_info.h>
#include <soc/intel/common/smbios.h>
#include <soc/meminit.h>
#include <string.h>
#define FSP_SMBIOS_MEMORY_INFO_GUID \
{ \
0x8c, 0x10, 0xa1, 0x01, 0xee, 0x9d, 0x84, 0x49, \
0x88, 0xc3, 0xee, 0xe8, 0xc4, 0x9e, 0xfb, 0x89 \
}
void save_lpddr4_dimm_info(const struct lpddr4_cfg *lp4cfg, size_t mem_sku)
{
int channel, dimm, dimm_max, index;
size_t hob_size;
const DIMM_INFO *src_dimm;
struct dimm_info *dest_dimm;
struct memory_info *mem_info;
const CHANNEL_INFO *channel_info;
const FSP_SMBIOS_MEMORY_INFO *memory_info_hob;
const uint8_t smbios_memory_info_guid[16] =
FSP_SMBIOS_MEMORY_INFO_GUID;
if (mem_sku >= lp4cfg->num_skus) {
printk(BIOS_ERR, "Too few LPDDR4 SKUs: 0x%zx/0x%zx\n",
mem_sku, lp4cfg->num_skus);
return;
}
/* Locate the memory info HOB */
memory_info_hob = fsp_find_extension_hob_by_guid(
smbios_memory_info_guid,
&hob_size);
if (memory_info_hob == NULL || hob_size == 0) {
printk(BIOS_ERR, "SMBIOS memory info HOB is missing\n");
return;
}
/*
* Allocate CBMEM area for DIMM information used to populate SMBIOS
* table 17
*/
mem_info = cbmem_add(CBMEM_ID_MEMINFO, sizeof(*mem_info));
if (mem_info == NULL) {
printk(BIOS_ERR, "CBMEM entry for DIMM info missing\n");
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;
src_dimm = &channel_info->DimmInfo[dimm];
dest_dimm = &mem_info->dimm[index];
if (!src_dimm->SizeInMb)
continue;
/* Populate the DIMM information */
dimm_info_fill(dest_dimm,
src_dimm->SizeInMb,
memory_info_hob->MemoryType,
memory_info_hob->MemoryFrequencyInMHz,
channel_info->ChannelId,
src_dimm->DimmId,
lp4cfg->skus[mem_sku].part_num,
strlen(lp4cfg->skus[mem_sku].part_num),
memory_info_hob->DataWidth);
index++;
}
}
mem_info->dimm_cnt = index;
printk(BIOS_DEBUG, "%d DIMMs found\n", mem_info->dimm_cnt);
}
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