1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/* SPDX-License-Identifier: GPL-2.0-only */
#include <console/console.h>
#include <gpio.h>
#include <soc/gpio.h>
#include <mainboard/google/cyan/spd/spd_util.h>
/*
* 0b0000 - 4GiB total - 2 x 2GiB Samsung K4E8E304EE-EGCF
* 0b0001 - 2GiB total - 1 x 2GiB Samsung K4E8E304EE-EGCF
* 0b0010 - 4GiB total - 2 x 2GiB Hynix H9CCNNN8GTMLAR-NUD
* 0b0011 - 2GiB total - 1 x 2GiB Hynix H9CCNNN8GTMLAR-NUD
* 0b0100 - 4GiB total - 2 x 2GiB Micron MT52L256M32D1PF-107
* 0b0101 - 2GiB total - 1 x 2GiB Micron MT52L256M32D1PF-107
* 0b0110 - 2GiB total - 1 x 2GiB Samsung K4E8E324EB-EGCF
* 0b0111 - 4GiB total - 2 x 2GiB Samsung K4E8E324EB-EGCF
* 0b1000 - 2GiB total - 1 x 2GiB Hynix H9CCNNN8GTALAR-NUD
* 0b1001 - 4GiB total - 2 x 4GiB Hynix H9CCNNN8GTALAR-NUD
*/
static const uint32_t dual_channel_config =
(1 << 0) | (1 << 2) | (1 << 4) | (1 << 7) | (1 << 9);
uint8_t get_ramid(void)
{
gpio_t spd_gpios[] = {
GP_SW_64, /* I2C3_SDA, RAMID0 */
GP_SE_02, /* MF_PLT_CLK1, RAMID1 */
GP_SW_67, /* I2C3_SCL, RAMID2 */
GP_SW_80, /* SATA_GP3, RAMID3 */
};
return gpio_base2_value(spd_gpios, ARRAY_SIZE(spd_gpios));
}
int get_variant_spd_index(int ram_id, int *dual)
{
/* Determine if single or dual channel memory system */
*dual = (dual_channel_config & (1 << ram_id)) ? 1 : 0;
/* Display the RAM type */
switch (ram_id) {
case 0:
printk(BIOS_DEBUG, "4GiB Samsung K4E8E304EE-EGCF\n");
break;
case 1:
printk(BIOS_DEBUG, "2GiB Samsung K4E8E304EE-EGCF\n");
break;
case 2:
printk(BIOS_DEBUG, "4GiB Hynix H9CCNNN8GTMLAR-NUD\n");
break;
case 3:
printk(BIOS_DEBUG, "2GiB Hynix H9CCNNN8GTMLAR-NUD\n");
break;
case 4:
printk(BIOS_DEBUG, "4GiB Micron MT52L256M32D1PF-107\n");
break;
case 5:
printk(BIOS_DEBUG, "2GiB Micron MT52L256M32D1PF-107\n");
break;
case 6:
printk(BIOS_DEBUG, "2GiB Samsung K4E8E324EB-EGCF\n");
break;
case 7:
printk(BIOS_DEBUG, "4GiB Samsung K4E8E324EB-EGCF\n");
break;
case 8:
printk(BIOS_DEBUG, "2GiB Hynix H9CCNNN8GTALAR-NUD\n");
break;
case 9:
printk(BIOS_DEBUG, "4GiB Hynix H9CCNNN8GTALAR-NUD\n");
break;
}
/* 1:1 mapping between ram_id and spd_index for setzer */
return ram_id;
}
|
