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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Google Inc.
*
* 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 <string.h>
#include <arch/io.h>
#include <device/device.h>
#include <device/pci.h>
#include <console/console.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include <ec/google/chromeec/ec.h>
#include <soc/gpio.h>
#include <soc/sata.h>
#define GPIO_SPI_WP 58
#define GPIO_REC_MODE 12
#define FLAG_SPI_WP 0
#define FLAG_REC_MODE 1
#define FLAG_DEV_MODE 2
#ifndef __PRE_RAM__
#include <boot/coreboot_tables.h>
void fill_lb_gpios(struct lb_gpios *gpios)
{
struct lb_gpio chromeos_gpios[] = {
{GPIO_SPI_WP, ACTIVE_HIGH, 0, "write protect"},
{GPIO_REC_MODE, ACTIVE_LOW,
get_recovery_mode_switch(), "recovery"},
{-1, ACTIVE_HIGH, get_developer_mode_switch(), "developer"},
{-1, ACTIVE_HIGH, 1, "lid"},
{-1, ACTIVE_HIGH, 0, "power"},
{-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)
{
device_t dev;
#ifdef __PRE_RAM__
dev = PCI_DEV(0, 0x1f, 2);
#else
dev = dev_find_slot(0, PCI_DEVFN(0x1f, 2));
#endif
return (pci_read_config32(dev, SATA_SP) >> FLAG_SPI_WP) & 1;
}
int get_developer_mode_switch(void)
{
return 0;
}
int get_recovery_mode_switch(void)
{
device_t dev;
#ifdef __PRE_RAM__
dev = PCI_DEV(0, 0x1f, 2);
#else
dev = dev_find_slot(0, PCI_DEVFN(0x1f, 2));
#endif
return (pci_read_config32(dev, SATA_SP) >> FLAG_REC_MODE) & 1;
}
#ifdef __PRE_RAM__
void save_chromeos_gpios(void)
{
u32 flags = 0;
/* Write Protect: GPIO58 = GPIO_SPI_WP, active high */
if (get_gpio(GPIO_SPI_WP))
flags |= (1 << FLAG_SPI_WP);
/* Recovery: GPIO12 = RECOVERY_L, active low */
if (!get_gpio(GPIO_REC_MODE))
flags |= (1 << FLAG_REC_MODE);
/* Developer: Virtual */
pci_write_config32(PCI_DEV(0, 0x1f, 2), SATA_SP, flags);
}
#endif
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