chromeos.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <bootmode.h>
#include <boot/coreboot_tables.h>
#include <device/device.h>
#include <gpio.h>
#include <soc/gpio.h>
#include <ec/google/chromeec/ec.h>
#include <types.h>
#include <vendorcode/google/chromeos/chromeos.h>
 
#include "gpio.h"
#include "ec.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"},
                {-1, ACTIVE_HIGH, gfx_get_init_done(), "oprom"},
        };
        lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
}
 
int get_lid_switch(void)
{
        if (CONFIG(EC_GOOGLE_CHROMEEC))
                /* Read lid switch state from the EC. */
                return !!(google_chromeec_get_switches() & EC_SWITCH_LID_OPEN);
 
        /* Lid always open */
        return 1;
}
 
int get_recovery_mode_switch(void)
{
        if (CONFIG(EC_GOOGLE_CHROMEEC)) {
                /* Check for dedicated recovery switch first. */
                if (google_chromeec_get_switches() &
                        EC_SWITCH_DEDICATED_RECOVERY)
                return 1;
 
                /* Otherwise check if the EC has posted the keyboard recovery
                 * event. */
                return !!(google_chromeec_get_events_b() &
                          EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY));
        }
 
        return 0;
}
 
int get_write_protect_state(void)
{
        /* No write protect */
        return 0;
}
 
static const struct cros_gpio cros_gpios[] = {
        CROS_GPIO_REC_AL(CROS_GPIO_VIRTUAL, CROS_GPIO_DEVICE_NAME),
        CROS_GPIO_WP_AH(CROS_GPIO_VIRTUAL, CROS_GPIO_DEVICE_NAME),
};
DECLARE_CROS_GPIOS(cros_gpios);
 
int get_ec_is_trusted(void)
{
        /* Do not have a Chrome EC involved in entering recovery mode;
           Always return trusted. */
        return 1;
}