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/* SPDX-License-Identifier: GPL-2.0-only */
#include <cbfs.h>
#include <console/console.h>
#include <endian.h>
#include <string.h>
#include <soc/gpio.h>
#include <soc/pei_data.h>
#include <soc/romstage.h>
#include <ec/google/chromeec/ec.h>
#include <mainboard/google/auron/ec.h>
#include <mainboard/google/auron/variant.h>
/* Lulu board memory configuration GPIOs */
#define SPD_GPIO_BIT0 13
#define SPD_GPIO_BIT1 9
#define SPD_GPIO_BIT2 47
#define SPD_GPIO_BIT3 8
/* Copy SPD data for on-board memory */
void mainboard_fill_spd_data(struct pei_data *pei_data)
{
int spd_bits[4] = {
SPD_GPIO_BIT0,
SPD_GPIO_BIT1,
SPD_GPIO_BIT2,
SPD_GPIO_BIT3
};
int spd_gpio[4];
int spd_index;
size_t spd_file_len;
char *spd_file;
spd_gpio[0] = get_gpio(SPD_GPIO_BIT0);
spd_gpio[1] = get_gpio(SPD_GPIO_BIT1);
spd_gpio[2] = get_gpio(SPD_GPIO_BIT2);
spd_gpio[3] = get_gpio(SPD_GPIO_BIT3);
spd_index = (spd_gpio[3] << 3) | (spd_gpio[2] << 2) |
(spd_gpio[1] << 1) | spd_gpio[0];
printk(BIOS_DEBUG, "SPD: index %d (GPIO%d=%d GPIO%d=%d GPIO%d=%d GPIO%d=%d)\n",
spd_index,
spd_bits[3], spd_gpio[3],
spd_bits[2], spd_gpio[2],
spd_bits[1], spd_gpio[1],
spd_bits[0], spd_gpio[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 - old hardware?\n");
spd_index = 0;
}
if (spd_file_len < SPD_LEN)
die("Missing SPD data.");
/* CH0 */
memcpy(pei_data->spd_data[0][0],
spd_file + (spd_index * SPD_LEN), SPD_LEN);
/* CH1 not used in 2GB configurations */
if (!((spd_index == 0b0000) || (spd_index == 0b0011) ||
(spd_index == 0b1010))) {
memcpy(pei_data->spd_data[1][0],
spd_file + (spd_index * SPD_LEN), SPD_LEN);
}
/* Make sure a valid SPD was found */
if (pei_data->spd_data[0][0][0] == 0)
die("Invalid SPD data.");
mainboard_print_spd_info(pei_data->spd_data[0][0]);
}
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