chromeos.c

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/* SPDX-License-Identifier: GPL-2.0-or-later */
 
#include <baseboard/gpio.h>
#include <boardid.h>
#include <bootmode.h>
#include <boot/coreboot_tables.h>
#include <gpio.h>
#include <types.h>
#include <vendorcode/google/chromeos/chromeos.h>
 
void fill_lb_gpios(struct lb_gpios *gpios)
{
        struct lb_gpio chromeos_gpios[] = {
                {-1, ACTIVE_HIGH, get_lid_switch(), "lid"},
                {-1, ACTIVE_HIGH, 0, "power"},
                {GPIO_EC_IN_RW, ACTIVE_HIGH, gpio_get(GPIO_EC_IN_RW), "EC in RW"},
        };
        lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
}
 
static const struct cros_gpio cros_gpios[] = {
        CROS_GPIO_REC_AL(CROS_GPIO_VIRTUAL, GPIO_DEVICE_NAME),
        CROS_GPIO_WP_AL(CROS_WP_GPIO, GPIO_DEVICE_NAME),
};
DECLARE_CROS_GPIOS(cros_gpios);
 
int get_ec_is_trusted(void)
{
        /* Board versions 1 & 2 support H1 DB, but the EC_IN_RW signal is not
           routed. So emulate EC is trusted. */
        if (CONFIG(BOARD_GOOGLE_GUYBRUSH) &&
            (board_id() == UNDEFINED_STRAPPING_ID || board_id() < 3))
                return 1;
        /* EC is trusted if not in RW. */
        return !gpio_get(GPIO_EC_IN_RW);
}