chromeos.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <boot/coreboot_tables.h>
#include <ec/google/chromeec/ec.h>
#include <ec/google/chromeec/ec_commands.h>
#include <soc/cpu.h>
#include <soc/gpio.h>
#include <types.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include <bootmode.h>
 
void fill_lb_gpios(struct lb_gpios *gpios)
{
        struct lb_gpio chromeos_gpios[] = {
                /* Lid: active high (LID_GPIO) */
                {EXYNOS5_GPX3, ACTIVE_HIGH, gpio_get_value(GPIO_X35), "lid"},
 
                /* Power: virtual GPIO active low (POWER_GPIO) */
                {EXYNOS5_GPX1, ACTIVE_LOW, gpio_get_value(GPIO_X13), "power"},
        };
        lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
}
 
int get_recovery_mode_switch(void)
{
        uint64_t ec_events;
 
        /* The GPIO is active low. */
        if (!gpio_get_value(GPIO_Y10)) // RECMODE_GPIO
                return 1;
 
        ec_events = google_chromeec_get_events_b();
        return !!(ec_events &
                  EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY));
}
 
int get_write_protect_state(void)
{
        return !gpio_get_value(GPIO_D16);
}
 
int get_ec_is_trusted(void)
{
        /* EC is trusted if not in RW. */
        return !gpio_get_value(GPIO_D17);
}