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

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <console/console.h>
   4 #include <gpio.h>
   5 #include <mainboard/google/cyan/spd/spd_util.h>
   6
   7 /*
   8  *   0b0000 - 4GiB total - 2 x 2GiB Samsung K4E8E304EE-EGCF
   9  *   0b0001 - 2GiB total - 1 x 2GiB Samsung K4E8E304EE-EGCF
  10  *   0b0010 - 4GiB total - 2 x 2GiB Hynix H9CCNNN8GTMLAR-NUD
  11  *   0b0011 - 2GiB total - 1 x 2GiB Hynix H9CCNNN8GTMLAR-NUD
  12  *   0b0100 - 4GiB total - 2 x 2GiB Micron MT52L256M32D1PF-107
  13  *   0b0101 - 2GiB total - 1 x 2GiB Micron MT52L256M32D1PF-107
  14  *   0b0110 - 2GiB total - 1 x 2GiB Samsung K4E8E324EB-EGCF
  15  *   0b0111 - 4GiB total - 2 x 2GiB Samsung K4E8E324EB-EGCF
  16  *   0b1000 - 2GiB total - 1 x 2GiB Hynix H9CCNNN8GTALAR-NUD
  17  *   0b1001 - 4GiB total - 2 x 4GiB Hynix H9CCNNN8GTALAR-NUD
  18  */
  19
  20 static const uint32_t dual_channel_config =
  21         (1 << 0) | (1 << 2) | (1 << 4) | (1 << 7) | (1 << 9);
  22
  23 uint8_t get_ramid(void)
  24 {
  25         gpio_t spd_gpios[] = {
  26                 GP_SW_64,       /* I2C3_SDA, RAMID0 */
  27                 GP_SE_02,   /* MF_PLT_CLK1, RAMID1 */
  28                 GP_SW_67,       /* I2C3_SCL, RAMID2 */
  29                 GP_SW_80,       /* SATA_GP3, RAMID3 */
  30         };
  31
  32         return gpio_base2_value(spd_gpios, ARRAY_SIZE(spd_gpios));
  33 }
  34
  35 int get_variant_spd_index(int ram_id, int *dual)
  36 {
  37         /* Determine if single or dual channel memory system */
  38         *dual = (dual_channel_config & (1 << ram_id)) ? 1 : 0;
  39
  40         /* Display the RAM type */
  41         switch (ram_id) {
  42         case 0:
  43                 printk(BIOS_DEBUG, "4GiB Samsung K4E8E304EE-EGCF\n");
  44                 break;
  45         case 1:
  46                 printk(BIOS_DEBUG, "2GiB Samsung K4E8E304EE-EGCF\n");
  47                 break;
  48         case 2:
  49                 printk(BIOS_DEBUG, "4GiB Hynix H9CCNNN8GTMLAR-NUD\n");
  50                 break;
  51         case 3:
  52                 printk(BIOS_DEBUG, "2GiB Hynix H9CCNNN8GTMLAR-NUD\n");
  53                 break;
  54         case 4:
  55                 printk(BIOS_DEBUG, "4GiB Micron MT52L256M32D1PF-107\n");
  56                 break;
  57         case 5:
  58                 printk(BIOS_DEBUG, "2GiB Micron MT52L256M32D1PF-107\n");
  59                 break;
  60         case 6:
  61                 printk(BIOS_DEBUG, "2GiB Samsung K4E8E324EB-EGCF\n");
  62                 break;
  63         case 7:
  64                 printk(BIOS_DEBUG, "4GiB Samsung K4E8E324EB-EGCF\n");
  65                 break;
  66         case 8:
  67                 printk(BIOS_DEBUG, "2GiB Hynix H9CCNNN8GTALAR-NUD\n");
  68                 break;
  69         case 9:
  70                 printk(BIOS_DEBUG, "4GiB Hynix H9CCNNN8GTALAR-NUD\n");
  71                 break;
  72         }
  73
  74         /* 1:1 mapping between ram_id and spd_index for setzer */
  75         return ram_id;
  76 }