early_init.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <stdint.h>
#include <string.h>
#include <cbfs.h>
#include <device/pci_ops.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 "ec.h"
 
#define SPD_LEN 256
 
void mainboard_pch_lpc_setup(void)
{
        /* Memory map KB9012 EC registers */
        pci_write_config32(
                PCH_LPC_DEV, LGMR,
                CONFIG_EC_BASE_ADDRESS | 1);
        pci_write_config16(PCH_LPC_DEV, BIOS_DEC_EN1, 0xffc0);
 
        /* Enable external USB port power. */
        if (CONFIG(USBDEBUG))
                ec_mm_set_bit(0x3b, 4);
}
 
const struct southbridge_usb_port mainboard_usb_ports[] = {
        { 1, 1, 0 },
        { 1, 0, 0 },
        { 1, 1, 1 },
        { 1, 0, 1 },
        { 1, 1, 2 },
        { 1, 0, 2 },
        { 0, 0, 3 },
        { 0, 1, 3 },
        { 1, 0, 4 },
        { 1, 1, 4 },
        { 1, 1, 5 },
        { 1, 1, 5 },
        { 1, 1, 6 },
        { 1, 1, 6 },
};
 
static const char *mainboard_spd_names[9] = {
        "ELPIDA 4GB",
        "SAMSUNG 4GB",
        "HYNIX 4GB",
        "ELPIDA 8GB",
        "SAMSUNG 8GB",
        "HYNIX 8GB",
        "ELPIDA 2GB",
        "SAMSUNG 2GB",
        "HYNIX 2GB",
};
 
void mainboard_get_spd(spd_raw_data *spd, bool id_only)
{
        void *spd_file;
        size_t spd_file_len = 0;
        const int spd_gpios[] = {71, 70, 16, 48, -1};
 
        u32 spd_index = get_gpios(spd_gpios);
        if (spd_index >= ARRAY_SIZE(mainboard_spd_names)) {
                /* Fallback to pessimistic 2GB image (ELPIDA 2GB) */
                spd_index = 6;
        }
 
        printk(BIOS_INFO, "SPD index %d (%s)\n",
                spd_index, mainboard_spd_names[spd_index]);
 
        /* C0S0 is a soldered RAM with no real SPD. Use stored SPD. */
        spd_file = cbfs_map("spd.bin", &spd_file_len);
 
        if (!spd_file || spd_file_len < SPD_LEN * spd_index + SPD_LEN)
                die("SPD data not found.");
 
        memcpy(spd, spd_file + SPD_LEN * spd_index, SPD_LEN);
}