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Diffstat (limited to 'src/soc/intel/apollolake/meminit.c')
-rw-r--r--src/soc/intel/apollolake/meminit.c88
1 files changed, 87 insertions, 1 deletions
diff --git a/src/soc/intel/apollolake/meminit.c b/src/soc/intel/apollolake/meminit.c
index 92b84c80af..03e9ac485b 100644
--- a/src/soc/intel/apollolake/meminit.c
+++ b/src/soc/intel/apollolake/meminit.c
@@ -12,8 +12,11 @@
* 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 <smbios.h>
#include <soc/meminit.h>
#include <stddef.h> /* required for FspmUpd.h */
#include <soc/fsp/FspmUpd.h>
@@ -252,3 +255,86 @@ void meminit_lpddr4_by_sku(struct FSP_M_CONFIG *cfg,
lpcfg->swizzle_config);
}
}
+
+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 struct DIMM_INFO *src_dimm;
+ struct dimm_info *dest_dimm;
+ struct memory_info *mem_info;
+ const struct CHANNEL_INFO *channel_info;
+ const struct FSP_SMBIOS_MEMORY_INFO *memory_info_hob;
+
+ if (mem_sku >= lp4cfg->num_skus) {
+ printk(BIOS_ERR, "Too few LPDDR4 SKUs: 0x%zx/0x%zx\n",
+ mem_sku, lp4cfg->num_skus);
+ return;
+ }
+
+ memory_info_hob = fsp_find_smbios_memory_info(&hob_size);
+
+ /*
+ * 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 */
+ dest_dimm->dimm_size = src_dimm->SizeInMb;
+ dest_dimm->ddr_type = memory_info_hob->MemoryType;
+ dest_dimm->ddr_frequency =
+ memory_info_hob->MemoryFrequencyInMHz;
+ dest_dimm->channel_num = channel_info->ChannelId;
+ dest_dimm->dimm_num = src_dimm->DimmId;
+ strncpy((char *)dest_dimm->module_part_number,
+ lp4cfg->skus[mem_sku].part_num,
+ sizeof(dest_dimm->module_part_number));
+
+ switch (memory_info_hob->DataWidth) {
+ case 8:
+ dest_dimm->bus_width = MEMORY_BUS_WIDTH_8;
+ break;
+ case 16:
+ dest_dimm->bus_width = MEMORY_BUS_WIDTH_16;
+ break;
+ case 32:
+ dest_dimm->bus_width = MEMORY_BUS_WIDTH_32;
+ break;
+ case 64:
+ dest_dimm->bus_width = MEMORY_BUS_WIDTH_64;
+ break;
+ case 128:
+ dest_dimm->bus_width = MEMORY_BUS_WIDTH_128;
+ break;
+ default:
+ printk(BIOS_ERR, "Incorrect DIMM Data Width");
+ }
+ index++;
+ }
+ }
+ mem_info->dimm_cnt = index;
+ printk(BIOS_DEBUG, "%d DIMMs found\n", mem_info->dimm_cnt);
+}
+