src/mainboard/google/auron/variants/auron_yuna/spd/spd.c

/* SPDX-License-Identifier: GPL-2.0-only */

#include <endian.h>
#include <string.h>
#include <southbridge/intel/lynxpoint/lp_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>

/* Auron board memory configuration GPIOs */
#define SPD_GPIO_BIT0		13
#define SPD_GPIO_BIT1		9
#define SPD_GPIO_BIT2		47

/* Copy SPD data for on-board memory */
void mainboard_fill_spd_data(struct pei_data *pei_data)
{
	const int gpio_vector[] = {
		SPD_GPIO_BIT0,
		SPD_GPIO_BIT1,
		SPD_GPIO_BIT2,
		-1,
	};

	const unsigned int spd_index = get_gpios(gpio_vector);

	fill_spd_for_index(pei_data->spd_data[0][0], spd_index);

	/* Index 0-2 are 4GB config with both CH0 and CH1.
	 * Index 4-6 are 2GB config with CH0 only. */
	if (spd_index > 3)
		pei_data->dimm_channel1_disabled = 3;
	else
		memcpy(pei_data->spd_data[1][0], pei_data->spd_data[0][0], SPD_LEN);
}