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
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
/*
* This file is part of the coreboot project.
*
* Copyright 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <boot/coreboot_tables.h>
#include <console/console.h>
#include <ec/google/chromeec/ec.h>
#include <ec/google/chromeec/ec_commands.h>
#include <string.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include <cpu/samsung/exynos5250/cpu.h>
#include <cpu/samsung/exynos5250/gpio.h>
enum {
ACTIVE_LOW = 0,
ACTIVE_HIGH = 1
};
enum {
WP_GPIO = 6,
RECMODE_GPIO = 0,
LID_GPIO = 5,
POWER_GPIO = 3
};
static struct exynos5_gpio_part1 *gpio_pt1 =
(struct exynos5_gpio_part1 *)EXYNOS5_GPIO_PART1_BASE;
static struct exynos5_gpio_part2 *gpio_pt2 =
(struct exynos5_gpio_part2 *)EXYNOS5_GPIO_PART2_BASE;
void fill_lb_gpios(struct lb_gpios *gpios)
{
int count = 0;
/* Write Protect: active low */
gpios->gpios[count].port = EXYNOS5_GPD1;
gpios->gpios[count].polarity = ACTIVE_LOW;
gpios->gpios[count].value = s5p_gpio_get_value(&gpio_pt1->d1, WP_GPIO);
strncpy((char *)gpios->gpios[count].name, "write protect",
GPIO_MAX_NAME_LENGTH);
count++;
/* Recovery: active low */
gpios->gpios[count].port = -1;
gpios->gpios[count].polarity = ACTIVE_HIGH;
gpios->gpios[count].value = get_recovery_mode_switch();
strncpy((char *)gpios->gpios[count].name, "recovery",
GPIO_MAX_NAME_LENGTH);
count++;
/* Lid: active high */
gpios->gpios[count].port = EXYNOS5_GPX3;
gpios->gpios[count].polarity = ACTIVE_HIGH;
gpios->gpios[count].value = s5p_gpio_get_value(&gpio_pt2->x3, LID_GPIO);
strncpy((char *)gpios->gpios[count].name, "lid", GPIO_MAX_NAME_LENGTH);
count++;
/* Power: virtual GPIO active low */
gpios->gpios[count].port = EXYNOS5_GPX1;
gpios->gpios[count].polarity = ACTIVE_LOW;
gpios->gpios[count].value =
s5p_gpio_get_value(&gpio_pt2->x1, POWER_GPIO);
strncpy((char *)gpios->gpios[count].name, "power",
GPIO_MAX_NAME_LENGTH);
count++;
/* Developer: virtual GPIO active high */
gpios->gpios[count].port = -1;
gpios->gpios[count].polarity = ACTIVE_HIGH;
gpios->gpios[count].value = get_developer_mode_switch();
strncpy((char *)gpios->gpios[count].name, "developer",
GPIO_MAX_NAME_LENGTH);
count++;
gpios->size = sizeof(*gpios) + (count * sizeof(struct lb_gpio));
gpios->count = count;
printk(BIOS_ERR, "Added %d GPIOS size %d\n", count, gpios->size);
}
int get_developer_mode_switch(void)
{
return 0;
}
int get_recovery_mode_switch(void)
{
uint32_t ec_events;
/* The GPIO is active low. */
if (!s5p_gpio_get_value(&gpio_pt1->y1, RECMODE_GPIO))
return 1;
ec_events = google_chromeec_get_events_b();
return !!(ec_events &
EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY));
}
int get_recovery_mode_from_vbnv(void)
{
return 0;
}
|
