chromeos.c

Go to the documentation of this file.

/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <bootmode.h>
#include <boot/coreboot_tables.h>
#include <device/device.h>
 
#include <southbridge/intel/bd82x6x/pch.h>
#include <southbridge/intel/common/gpio.h>
#include <ec/quanta/ene_kb3940q/ec.h>
#include <types.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include "ec.h"
#include "onboard.h"
 
void fill_lb_gpios(struct lb_gpios *gpios)
{
        struct lb_gpio chromeos_gpios[] = {
                /* lid switch value from EC */
                {-1, ACTIVE_HIGH, get_lid_switch(), "lid"},
 
                /* Power Button - Hardcode Low as power button may still be
                 * pressed when read here.*/
                {-1, ACTIVE_HIGH, 0, "power"},
 
                /* Was VGA Option ROM loaded? */
                /* -1 indicates that this is a pseudo GPIO */
                {-1, ACTIVE_HIGH, gfx_get_init_done(), "oprom"},
        };
        lb_add_gpios(gpios, chromeos_gpios, ARRAY_SIZE(chromeos_gpios));
}
 
int get_write_protect_state(void)
{
        return !get_gpio(WP_GPIO);
}
 
int get_lid_switch(void)
{
        return (ec_mem_read(EC_HW_GPI_STATUS) >> EC_GPI_LID_STAT_BIT) & 1;
}
 
/* FIXME: VBOOT reads this in ENV_ROMSTAGE. */
int get_recovery_mode_switch(void)
{
        if (ENV_RAMSTAGE)
                return (ec_mem_read(EC_CODE_STATE) == EC_COS_EC_RO);
 
        return 0;
}
 
static const struct cros_gpio cros_gpios[] = {
        CROS_GPIO_REC_AH(CROS_GPIO_VIRTUAL, CROS_GPIO_DEVICE_NAME),
        CROS_GPIO_WP_AL(WP_GPIO, 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;
}