src/soc/intel/denverton_ns/hob_mem.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <cbmem.h>
   4 #include <console/console.h>
   5 #include <string.h>
   6
   7 #include <soc/hob_mem.h>
   8
   9 #include <smbios.h>
  10 #include <memory_info.h>
  11 #include <soc/ramstage.h>
  12
  13 /* Save the DIMM information for SMBIOS table 17 */
  14 void soc_save_dimm_info(void)
  15 {
  16         int channel;
  17         const CHANNEL_INFO *channel_info;
  18         int dimm;
  19         const DIMM_INFO *dimm_info;
  20         int dimm_max;
  21         int index;
  22         struct memory_info *mem_info;
  23         const FSP_SMBIOS_MEMORY_INFO *memory_info_hob;
  24
  25         /* Get the memory info HOB */
  26         memory_info_hob = soc_get_fsp_smbios_memory_info_hob();
  27
  28         if (memory_info_hob == NULL)
  29                 return;
  30
  31         /* Display the data in the FSP_SMBIOS_MEMORY_INFO HOB */
  32         if (CONFIG(DISPLAY_HOBS))
  33                 soc_display_fsp_smbios_memory_info_hob(memory_info_hob);
  34
  35         /*
  36          * Allocate CBMEM area for DIMM information used to populate SMBIOS
  37          * table 17
  38          */
  39         mem_info = cbmem_add(CBMEM_ID_MEMINFO, sizeof(*mem_info));
  40         printk(BIOS_DEBUG, "CBMEM entry for DIMM info: %p\n", mem_info);
  41         if (mem_info == NULL)
  42                 return;
  43         memset(mem_info, 0, sizeof(*mem_info));
  44
  45         /* Describe the first N DIMMs in the system */
  46         index = 0;
  47         dimm_max = ARRAY_SIZE(mem_info->dimm);
  48         for (channel = 0; channel < memory_info_hob->ChannelCount; channel++) {
  49                 if (index >= dimm_max)
  50                         break;
  51                 channel_info = &memory_info_hob->ChannelInfo[channel];
  52                 for (dimm = 0; dimm < channel_info->DimmCount; dimm++) {
  53                         if (index >= dimm_max)
  54                                 break;
  55                         dimm_info = &channel_info->DimmInfo[dimm];
  56
  57                         /* Populate the DIMM information */
  58                         if (!dimm_info->SizeInMb)
  59                                 continue;
  60
  61                         mem_info->dimm[index].dimm_size =
  62                                 dimm_info->SizeInMb;
  63                         mem_info->dimm[index].ddr_type =
  64                                 memory_info_hob->MemoryType;
  65                         mem_info->dimm[index].ddr_frequency =
  66                                 memory_info_hob->MemoryFrequencyInMHz;
  67                         mem_info->dimm[index].channel_num =
  68                                 channel_info->ChannelId;
  69                         mem_info->dimm[index].dimm_num =
  70                                 dimm_info->DimmId;
  71
  72                         strncpy((char *)
  73                                 mem_info->dimm[index].module_part_number,
  74                                 (char *)dimm_info->ModulePartNum, 18);
  75                         mem_info->dimm[index].mod_id =
  76                                 dimm_info->MfgId;
  77                         switch (memory_info_hob->DataWidth) {
  78                         default:
  79                         case 8:
  80                                 mem_info->dimm[index].bus_width =
  81                                         MEMORY_BUS_WIDTH_8;
  82                                 break;
  83
  84                         case 16:
  85                                 mem_info->dimm[index].bus_width =
  86                                         MEMORY_BUS_WIDTH_16;
  87                                 break;
  88
  89                         case 32:
  90                                 mem_info->dimm[index].bus_width =
  91                                         MEMORY_BUS_WIDTH_32;
  92                                 break;
  93
  94                         case 64:
  95                                 mem_info->dimm[index].bus_width =
  96                                         MEMORY_BUS_WIDTH_64;
  97                                 break;
  98
  99                         case 128:
 100                                 mem_info->dimm[index].bus_width =
 101                                         MEMORY_BUS_WIDTH_128;
 102                                 break;
 103                         }
 104
 105                         /* Add any mainboard specific information */
 106                         mainboard_add_dimm_info(mem_info, channel, dimm, index);
 107                         index++;
 108                 }
 109         }
 110         mem_info->dimm_cnt = index;
 111         printk(BIOS_DEBUG, "%d DIMMs found\n", mem_info->dimm_cnt);
 112 }
 113
 114 /* Add any mainboard specific information */
 115 __weak void mainboard_add_dimm_info(struct memory_info *mem_info,
 116                                                    int channel, int dimm,
 117                                                    int index)
 118 {
 119         printk(BIOS_DEBUG, "WEAK: %s/%s called\n", __FILE__, __func__);
 120 }