src/mainboard/google/cyan/variants/kefka/spd_util.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <console/console.h>
   4 #include <mainboard/google/cyan/spd/spd_util.h>
   5
   6 /*
   7  *  0b0000 - 4GiB total - 2 x 2GiB Hynix H9CCNNN8GTMLAR-NUD 1600MHz
   8  *  0b0001 - 2GiB total - 1 x 2GiB Hynix H9CCNNN8GTMLAR-NUD 1600MHz
   9  *  0b0010 - 4GiB total - 2 x 2GiB Micron MT52L256M32D1PF-107
  10  *  0b0011 - 2GiB total - 1 x 2GiB Micron MT52L256M32D1PF-107
  11  *  0b0100 - 4GiB total - 2 x 2GiB Samsung K4E8E324EB-EGCF 1600MHz
  12  *  0b0101 - 2GiB total - 1 x 2GiB Samsung K4E8E324EB-EGCF 1600MHz
  13  *  0b0110 - 4GiB total - 2 x 2GiB Hynix H9CCNNN8GTALAR-NUD
  14  *  0b0111 - 2GiB total - 1 x 2GiB Hynix H9CCNNN8GTALAR-NUD
  15  *
  16  */
  17
  18 static const uint32_t dual_channel_config =
  19                                 (1 << 0) | (1 << 2) | (1 << 4) | (1 << 6);
  20
  21 int get_variant_spd_index(int ram_id, int *dual)
  22 {
  23         /* Determine if single or dual channel memory system */
  24         *dual = (dual_channel_config & (1 << ram_id)) ? 1 : 0;
  25
  26         /* Display the RAM type */
  27         switch (ram_id) {
  28         case 0:
  29                 printk(BIOS_DEBUG, "4GiB Hynix H9CCNNN8GTMLAR-NUD\n");
  30                 break;
  31         case 1:
  32                 printk(BIOS_DEBUG, "2GiB Hynix H9CCNNN8GTMLAR-NUD\n");
  33                 break;
  34         case 2:
  35                 printk(BIOS_DEBUG, "4GiB Micron MT52L256M32D1PF-107\n");
  36                 break;
  37         case 3:
  38                 printk(BIOS_DEBUG, "2GiB Micron MT52L256M32D1PF-107\n");
  39                 break;
  40         case 4:
  41                 printk(BIOS_DEBUG, "4GiB Samsung K4E8E324EB-EGCF\n");
  42                 break;
  43         case 5:
  44                 printk(BIOS_DEBUG, "2GiB Samsung K4E8E324EB-EGCF\n");
  45                 break;
  46         case 6:
  47                 printk(BIOS_DEBUG, "4GiB Hynix H9CCNNN8GTALAR-NUD\n");
  48                 break;
  49         case 7:
  50                 printk(BIOS_DEBUG, "2GiB Hynix H9CCNNN8GTALAR-NUD\n");
  51                 break;
  52         }
  53
  54         /* 1:1 mapping between ram_id and spd_index for kefka */
  55         return ram_id;
  56 }