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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2008-2009 coresystems GmbH
* Copyright (C) 2015 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.
*/
#include <arch/io.h>
#include <console/console.h>
#include <cpu/x86/smm.h>
#include <elog.h>
#include <ec/google/chromeec/ec.h>
#include <soc/iomap.h>
#include <soc/nvs.h>
#include <soc/pm.h>
#include <soc/smm.h>
#include "ec.h"
int mainboard_io_trap_handler(int smif)
{
switch (smif) {
case 0x99:
printk(BIOS_DEBUG, "Sample\n");
smm_get_gnvs()->smif = 0;
break;
default:
return 0;
}
/* On success, the IO Trap Handler returns 0
* On failure, the IO Trap Handler returns a value != 0
*
* For now, we force the return value to 0 and log all traps to
* see what's going on.
*/
return 1;
}
static u8 mainboard_smi_ec(void)
{
u8 cmd = 0;
#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC)
u32 pm1_cnt;
cmd = google_chromeec_get_event();
/* Log this event */
if (IS_ENABLED(CONFIG_ELOG_GSMI) && cmd)
elog_add_event_byte(ELOG_TYPE_EC_EVENT, cmd);
switch (cmd) {
case EC_HOST_EVENT_LID_CLOSED:
printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n");
/* Go to S5 */
pm1_cnt = inl(ACPI_BASE_ADDRESS + PM1_CNT);
pm1_cnt |= (0xf << 10);
outl(pm1_cnt, ACPI_BASE_ADDRESS + PM1_CNT);
break;
}
#endif
return cmd;
}
void mainboard_smi_gpi_handler(const struct gpi_status *sts)
{
if (gpi_status_get(sts, EC_SMI_GPI)) {
/* Process all pending events */
while (mainboard_smi_ec() != 0)
;
}
}
void mainboard_smi_sleep(u8 slp_typ)
{
#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC)
/* Disable USB charging if required */
switch (slp_typ) {
case 3:
if (smm_get_gnvs()->s3u0 == 0) {
google_chromeec_set_usb_charge_mode(
0, USB_CHARGE_MODE_DISABLED);
google_chromeec_set_usb_charge_mode(
1, USB_CHARGE_MODE_DISABLED);
}
/* Enable wake events */
google_chromeec_set_wake_mask(MAINBOARD_EC_S3_WAKE_EVENTS);
break;
case 5:
if (smm_get_gnvs()->s5u0 == 0) {
google_chromeec_set_usb_charge_mode(
0, USB_CHARGE_MODE_DISABLED);
google_chromeec_set_usb_charge_mode(
1, USB_CHARGE_MODE_DISABLED);
}
/* Enable wake events */
google_chromeec_set_wake_mask(MAINBOARD_EC_S5_WAKE_EVENTS);
break;
}
/* Disable SCI and SMI events */
google_chromeec_set_smi_mask(0);
google_chromeec_set_sci_mask(0);
/* Clear pending events that may trigger immediate wake */
while (google_chromeec_get_event() != 0)
;
#endif
}
int mainboard_smi_apmc(u8 apmc)
{
#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC)
switch (apmc) {
case APM_CNT_ACPI_ENABLE:
google_chromeec_set_smi_mask(0);
/* Clear all pending events */
while (google_chromeec_get_event() != 0)
;
google_chromeec_set_sci_mask(MAINBOARD_EC_SCI_EVENTS);
break;
case APM_CNT_ACPI_DISABLE:
google_chromeec_set_sci_mask(0);
/* Clear all pending events */
while (google_chromeec_get_event() != 0)
;
google_chromeec_set_smi_mask(MAINBOARD_EC_SMI_EVENTS);
break;
}
#endif
return 0;
}
|
