early_init.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <stdint.h>
#include <string.h>
#include <console/console.h>
#include <northbridge/intel/sandybridge/raminit_native.h>
#include <southbridge/intel/bd82x6x/pch.h>
#include <southbridge/intel/common/gpio.h>
#include <cbfs.h>
 
const struct southbridge_usb_port mainboard_usb_ports[] = {
        /* enabled, current, OC pin */
        { 0, 3, 0 }, /* P00 disconnected */
        { 1, 1, 1 }, /* P01 left or right */
        { 0, 1, 3 }, /* P02 disconnected */
        { 1, 3, -1 },/* P03 WWAN */
        { 0, 1, 2 }, /* P04 disconnected */
        { 0, 1, -1 },/* P05 disconnected */
        { 0, 1, -1 },/* P06 disconnected */
        { 0, 2, -1 },/* P07 disconnected */
        { 0, 1, -1 },/* P08 disconnected */
        { 1, 2, 5 }, /* P09 left or right */
        { 1, 3, -1 },/* P10 FPR */
        { 1, 3, -1 },/* P11 Bluetooth */
        { 1, 1, -1 },/* P12 WLAN */
        { 1, 1, -1 },/* P13 Camera */
};
 
static uint8_t *get_spd_data(int spd_index)
{
        uint8_t *spd_file;
        size_t spd_file_len;
 
        printk(BIOS_DEBUG, "spd index %d\n", spd_index);
        spd_file = cbfs_map("spd.bin", &spd_file_len);
        if (!spd_file)
                die("SPD data not found.");
 
        if (spd_file_len < spd_index * 256)
                die("Missing SPD data.");
 
        return spd_file + spd_index * 256;
}
 
void mainboard_get_spd(spd_raw_data *spd, bool id_only)
{
        uint8_t *memory;
        const int spd_gpio_vector[] = {25, 45, -1};
        int spd_index = get_gpios(spd_gpio_vector);
 
        /* 4gb model = 0, 8gb model = 1 */
        /* int extended_memory_version = get_gpio(44); */
 
        /*
         * So far there is no need to parse gpio 44, as the 4GiB use
         * the hynix or elpida memory and 8 GiB versions use samsung.
         * All version use both channels.
         * But we might miss some versions.
         */
 
        /*
         * GPIO45 GPIO25
         * 0      0       elpida
         * 0      1       hynix
         * 1      0       samsung
         * 1      1       reserved
         */
 
        if (spd_index == 3)
                die("Unsupported Memory. (detected 'reserved' memory configuration).");
 
        memory = get_spd_data(spd_index);
        memcpy(&spd[0], memory, 256);
        memcpy(&spd[2], memory, 256);
}