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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <console/console.h>
#include <smbios.h>
#include <soc/ddr.h>
#include <soc/intel/common/smbios.h>
#include <soc/romstage.h>
#include <soc/util.h>
#include <spd.h>
void save_dimm_info(void)
{
const struct SystemMemoryMapHob *hob = get_system_memory_map();
assert(hob != NULL);
/*
* Allocate CBMEM area for DIMM information used to populate SMBIOS
* table 17
*/
struct memory_info *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));
mem_info->max_capacity_mib = get_max_capacity_mib();
mem_info->number_of_devices = CONFIG_DIMM_MAX;
mem_info->ecc_type = get_error_correction_type(hob->RasModesEnabled);
int dimm_max = ARRAY_SIZE(mem_info->dimm);
uint32_t vdd_voltage = get_ddr_millivolt(hob->DdrVoltage);
int slot_index = 0;
const int max_dimm_count = get_max_dimm_count();
int dimm_num = 0;
for (int skt = 0; skt < CONFIG_MAX_SOCKET; skt++) {
for (int ch = 0; ch < MAX_CH; ch++) {
for (int dimm = 0; dimm < max_dimm_count; dimm++) {
if (slot_index >= dimm_max) {
printk(BIOS_WARNING, "Too many DIMMs info for %s.\n",
__func__);
return;
}
struct dimm_info *dest_dimm;
MEMMAP_DIMM_DEVICE_INFO_STRUCT src_dimm =
hob->Socket[skt].ChannelInfo[ch].DimmInfo[dimm];
if (src_dimm.Present) {
dest_dimm = &mem_info->dimm[slot_index++];
dest_dimm->dimm_size = (src_dimm.DimmSize << 6);
dest_dimm->soc_num = skt;
dest_dimm->channel_num = ch;
dest_dimm->dimm_num = dimm;
} else if (mainboard_dimm_slot_exists(skt, ch, dimm)) {
dest_dimm = &mem_info->dimm[slot_index++];
dest_dimm->dimm_size = 0;
dest_dimm->soc_num = skt;
dest_dimm->channel_num = ch;
dest_dimm->dimm_num = dimm;
continue;
} else
continue;
uint8_t mem_dev_type = get_dram_type(hob);
uint16_t data_width = 64;
dimm_info_fill(
dest_dimm, src_dimm.DimmSize << 6, mem_dev_type,
hob->memFreq, /* replaced by configured_speed_mts */
src_dimm.NumRanks,
ch, /* for mainboard locator string override */
dimm, /* for mainboard locator string override */
(const char *)&src_dimm.PartNumber[0],
sizeof(src_dimm.PartNumber),
(const uint8_t *)&src_dimm.serialNumber[0], data_width,
vdd_voltage, true, /* hard-coded as ECC supported */
src_dimm.VendorID, src_dimm.actKeyByte2, 0,
get_max_memory_speed(src_dimm.commonTck));
dimm_num++;
}
}
}
mem_info->dimm_cnt = slot_index; /* Number of DIMM slots found */
printk(BIOS_DEBUG, "%d slots and %d installed DIMMs found\n", slot_index, dimm_num);
}
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