src/mainboard/google/cyan/variants/wizpig/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 /* We use RAM_ID3 to indicate dual channel config.
   7  *
   8  * 0b0000 - 2GiB total - 1 x 2GiB Samsung K4E8E304EE-EGCE 1600MHz
   9  * 0b0001 - 2GiB total - 1 x 2GiB Hynix H9CCNNN8GTMLAR-NUD 1600MHz
  10  * 0b0010 - 2GiB total - 1 x 2GiB Micron EDF8132A3MA-JD-F 1600MHz
  11  * 0b0011 - 2GiB total - 1 x 2GiB Samsung K4E8E324EB-EGCF 1600MHz
  12  * 0b0100 - 2GiB total - 1 x 2GiB Hynix H9CCNNN8JTBLAR-NUD 1866MHz
  13  *
  14  * 0b1000 - 4GiB total - 2 x 2GiB Samsung K4E8E304EE-EGCE 1600MHz
  15  * 0b1001 - 4GiB total - 2 x 2GiB Hynix H9CCNNN8GTMLAR-NUD 1600MHz
  16  * 0b1010 - 4GiB total - 2 x 2GiB Micron EDF8132A3MA-JD-F 1600MHz
  17  * 0b1011 - 4GiB total - 2 x 2GiB Samsung K4E8E324EB-EGCF 1600MHz
  18  * 0b1100 - 4GiB total - 2 x 2GiB Hynix H9CCNNN8JTBLAR-NUD 1866MHz
  19  *
  20  */
  21
  22 int get_variant_spd_index(int ram_id, int *dual)
  23 {
  24         int spd_index = ram_id & 0x7;
  25
  26         /* Determine if single or dual channel memory system */
  27         /* RAMID3 is deterministic for ultima */
  28         *dual = !!(ram_id & (1<<3));
  29
  30         /* Display the RAM type */
  31         printk(BIOS_DEBUG, *dual ? "4GiB " : "2GiB ");
  32         switch (spd_index) {
  33         case 0:
  34                 printk(BIOS_DEBUG, "Samsung K4E8E304EE-EGCE\n");
  35                 break;
  36         case 1:
  37                 printk(BIOS_DEBUG, "Hynix H9CCNNN8GTMLAR-NUD\n");
  38                 break;
  39         case 2:
  40                 printk(BIOS_DEBUG, "Micron EDF8132A3MA-JD-F\n");
  41                 break;
  42         case 3:
  43                 printk(BIOS_DEBUG, "Samsung K4E8E324EB-EGCF\n");
  44                 break;
  45         case 4:
  46                 printk(BIOS_DEBUG, "Hynix H9CCNNN8JTBLAR-NUD\n");
  47                 break;
  48         }
  49
  50         return spd_index;
  51 }