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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011-2012 The ChromiumOS Authors. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <console/console.h>
#include <string.h>
#include <bootmode.h>
#include <device/pci_ops.h>
#include <device/device.h>
#include <device/pci.h>
#include <southbridge/intel/bd82x6x/pch.h>
#include <southbridge/intel/common/gpio.h>
#include <ec/quanta/ene_kb3940q/ec.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include "ec.h"
#define WP_GPIO 6
#define DEVMODE_GPIO 54
#define FORCE_RECOVERY_MODE 0
#if ENV_RAMSTAGE
#include <boot/coreboot_tables.h>
void fill_lb_gpios(struct lb_gpios *gpios)
{
struct lb_gpio chromeos_gpios[] = {
/* Write Protect: GPIO active Low */
{WP_GPIO, ACTIVE_LOW, !get_write_protect_state(),
"write protect"},
/* Recovery: virtual GPIO active high */
{-1, ACTIVE_HIGH, get_recovery_mode_switch(), "recovery"},
/* 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));
}
#endif
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;
}
int get_recovery_mode_switch(void)
{
int ec_rec_mode = 0;
#if FORCE_RECOVERY_MODE
printk(BIOS_DEBUG,"FORCING RECOVERY MODE.\n");
return 1;
#endif
#ifndef __PRE_RAM__
if (ec_mem_read(EC_CODE_STATE) == EC_COS_EC_RO) {
ec_rec_mode = 1;
}
printk(BIOS_DEBUG,"RECOVERY MODE FROM EC: %x\n", ec_rec_mode);
#endif
return ec_rec_mode;
}
static const struct cros_gpio cros_gpios[] = {
CROS_GPIO_REC_AH(CROS_GPIO_VIRTUAL, CROS_GPIO_DEVICE_NAME),
CROS_GPIO_DEV_AH(CROS_GPIO_VIRTUAL, CROS_GPIO_DEVICE_NAME),
CROS_GPIO_WP_AL(WP_GPIO, CROS_GPIO_DEVICE_NAME),
};
void mainboard_chromeos_acpi_generate(void)
{
chromeos_acpi_gpio_generate(cros_gpios, ARRAY_SIZE(cros_gpios));
}
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