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review.coreboot.org / coreboot / 9631016660423d0585a1 / . / src / mainboard / google / smaug / chromeos.c
blob: 088a036e75e0123aceeb178886eb248f0044c3ee [file] [log] [blame]
Patrick Georgi4d6ad832015-06-22 19:43:18 +0200[diff] [blame]1/*
2 * This file is part of the coreboot project.
3 *
4 * Copyright 2015 Google Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
Patrick Georgi4d6ad832015-06-22 19:43:18 +0200[diff] [blame]14 */
15
16#include <boardid.h>
17#include <boot/coreboot_tables.h>
18#include <console/console.h>
19#include <ec/google/chromeec/ec.h>
20#include <ec/google/chromeec/ec_commands.h>
21#include <string.h>
22#include <vendorcode/google/chromeos/chromeos.h>
23
24#include "gpio.h"
25
26void fill_lb_gpios(struct lb_gpios *gpios)
27{
28 int count = 0;
29
30 /* Write Protect: active low */
31 gpios->gpios[count].port = WRITE_PROTECT_L;
32 gpios->gpios[count].polarity = ACTIVE_LOW;
33 gpios->gpios[count].value = gpio_get(WRITE_PROTECT_L);
34 strncpy((char *)gpios->gpios[count].name, "write protect",
35 GPIO_MAX_NAME_LENGTH);
36 count++;
37
38 /* Recovery: active high */
39 gpios->gpios[count].port = -1;
40 gpios->gpios[count].polarity = ACTIVE_HIGH;
41 gpios->gpios[count].value = get_recovery_mode_switch();
42 strncpy((char *)gpios->gpios[count].name, "recovery",
43 GPIO_MAX_NAME_LENGTH);
44 count++;
45
46 /* TODO(furquan): add lid switch */
47
48 /* Power: active low / high depending on board id */
49 gpios->gpios[count].port = POWER_BUTTON;
50 gpios->gpios[count].polarity = ACTIVE_LOW;
51 gpios->gpios[count].value = -1;
52 strncpy((char *)gpios->gpios[count].name, "power",
53 GPIO_MAX_NAME_LENGTH);
54 count++;
55
56 /* Developer: virtual GPIO active high */
57 gpios->gpios[count].port = -1;
58 gpios->gpios[count].polarity = ACTIVE_HIGH;
59 gpios->gpios[count].value = get_developer_mode_switch();
60 strncpy((char *)gpios->gpios[count].name, "developer",
61 GPIO_MAX_NAME_LENGTH);
62 count++;
63
64 /* EC in RW: active high */
65 gpios->gpios[count].port = EC_IN_RW;
66 gpios->gpios[count].polarity = ACTIVE_HIGH;
67 gpios->gpios[count].value = -1;
68 strncpy((char *)gpios->gpios[count].name, "EC in RW",
69 GPIO_MAX_NAME_LENGTH);
70 count++;
71
72 /* Reset: active low (output) */
73 gpios->gpios[count].port = AP_SYS_RESET_L;
74 gpios->gpios[count].polarity = ACTIVE_LOW;
75 gpios->gpios[count].value = -1;
76 strncpy((char *)gpios->gpios[count].name, "reset",
77 GPIO_MAX_NAME_LENGTH);
78 count++;
79
80 gpios->size = sizeof(*gpios) + (count * sizeof(struct lb_gpio));
81 gpios->count = count;
82
83 printk(BIOS_ERR, "Added %d GPIOS size %d\n", count, gpios->size);
84}
85
86int get_developer_mode_switch(void)
87{
88 return 0;
89}
90
91int get_recovery_mode_switch(void)
92{
93 uint32_t ec_events;
94
95 ec_events = google_chromeec_get_events_b();
96
97 /* Enter recovery mode either on keyboard recovery / fastboot event. */
98 return !!((ec_events &
99 EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_RECOVERY)) ||
100 (ec_events &
101 EC_HOST_EVENT_MASK(EC_HOST_EVENT_KEYBOARD_FASTBOOT)));
102}
103
104int get_write_protect_state(void)
105{
106 return !gpio_get(WRITE_PROTECT_L);
107}