blob: d3cefa6b20f3544b8d1ddc40af7fe3edd93a3958 (
plain)
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
|
/* SPDX-License-Identifier: GPL-2.0-only */
#include <cbfs.h>
#include <console/console.h>
#include <device/dram/ddr4.h>
#include <spd.h>
#include "spd.h"
/* Get SPD data for on-board memory */
uint8_t *mainboard_find_spd_data(void)
{
uint8_t *spd_data;
int spd_index;
size_t spd_file_len;
char *spd_file;
spd_index = 0;
spd_file = cbfs_map("spd.bin", &spd_file_len);
if (!spd_file)
die("SPD data not found.");
if (spd_file_len < ((spd_index + 1) * SPD_SIZE_MAX_DDR4)) {
printk(BIOS_ERR,
"SPD index override to 0 due to incorrect SPD index.\n");
spd_index = 0;
}
if (spd_file_len < SPD_SIZE_MAX_DDR4)
die("Missing SPD data.");
/* Assume same memory in both channels */
spd_index *= SPD_SIZE_MAX_DDR4;
spd_data = (uint8_t *)(spd_file + spd_index);
/* Make sure a valid SPD was found */
if (spd_data[0] == 0)
die("Invalid SPD data.");
return spd_data;
}
|
