chromeos.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <bootmode.h>
#include <boot/coreboot_tables.h>
#include <device/pci_ops.h>
#include <device/device.h>
 
#include <southbridge/intel/bd82x6x/pch.h>
#include <southbridge/intel/common/gpio.h>
#include <types.h>
#include <vendorcode/google/chromeos/chromeos.h>
 
#include "onboard.h"
 
void fill_lb_gpios(struct lb_gpios *gpios)
{
        const pci_devfn_t dev = PCI_DEV(0, 0x1f, 0);
        u16 gen_pmcon_1 = pci_s_read_config32(dev, GEN_PMCON_1);
 
        struct lb_gpio chromeos_gpios[] = {
                /* Lid switch GPIO active high (open). */
                {GPIO_LID, ACTIVE_HIGH, get_lid_switch(), "lid"},
 
                /* Power Button */
                {101, ACTIVE_LOW, (gen_pmcon_1 >> 9) & 1, "power"},
 
                /* Did we load the VGA Option ROM? */
                /* -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_lid_switch(void)
{
        return get_gpio(GPIO_LID);
}
 
int get_write_protect_state(void)
{
        return !get_gpio(GPIO_SPI_WP);
}
 
int get_recovery_mode_switch(void)
{
        return !get_gpio(GPIO_REC_MODE);
}
 
static const struct cros_gpio cros_gpios[] = {
        CROS_GPIO_REC_AH(CROS_GPIO_VIRTUAL, CROS_GPIO_DEVICE_NAME),
        CROS_GPIO_WP_AL(GPIO_SPI_WP, 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;
}