1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2013 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 <bootmode.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 <ec/google/chromeec/ec_commands.h>
#include <soc/gpio.h>
/* SPI Write protect is GPIO 16 */
#define CROS_WP_GPIO 16
#ifndef __PRE_RAM__
#include <boot/coreboot_tables.h>
void fill_lb_gpios(struct lb_gpios *gpios)
{
struct lb_gpio chromeos_gpios[] = {
{CROS_WP_GPIO, ACTIVE_HIGH, 0, "write protect"},
{-1, ACTIVE_HIGH, get_recovery_mode_switch(), "recovery"},
{-1, ACTIVE_HIGH, get_developer_mode_switch(), "developer"},
{-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));
}
#endif
int get_lid_switch(void)
{
u8 ec_switches = inb(EC_LPC_ADDR_MEMMAP + EC_MEMMAP_SWITCHES);
return !!(ec_switches & EC_SWITCH_LID_OPEN);
}
/* The dev-switch is virtual */
int get_developer_mode_switch(void)
{
return 0;
}
/* There are actually two recovery switches. One is the magic keyboard chord,
* the other is driven by Servo. */
int get_recovery_mode_switch(void)
{
#if CONFIG_EC_GOOGLE_CHROMEEC
u8 ec_switches = inb(EC_LPC_ADDR_MEMMAP + EC_MEMMAP_SWITCHES);
u32 ec_events;
/* If a switch is set, we don't need to look at events. */
if (ec_switches & (EC_SWITCH_DEDICATED_RECOVERY))
return 1;
/* Else check if the EC has posted the keyboard recovery event. */
ec_events = google_chromeec_get_events_b();
return !!(ec_events &
EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY));
#else
return 0;
#endif
}
int clear_recovery_mode_switch(void)
{
const uint32_t kb_rec_mask =
EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY);
/* Unconditionally clear the EC recovery request. */
return google_chromeec_clear_events_b(kb_rec_mask);
}
int get_write_protect_state(void)
{
return get_gpio(CROS_WP_GPIO);
}
|
