spd.c

Go to the documentation of this file.

/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <cbfs.h>
#include <console/console.h>
 
#include "spd.h"
 
/* Get SPD data for on-board memory */
uint8_t *mainboard_find_spd_data()
{
        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_LEN)) {
                printk(BIOS_ERR,
                       "SPD index override to 0 due to incorrect SPD index.\n");
                spd_index = 0;
        }
 
        if (spd_file_len < SPD_LEN)
                die("Missing SPD data.");
 
        /* Assume same memory in both channels */
        spd_index *= SPD_LEN;
        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;
}