blob: 5553b2cc4185f8c7ba429f81673b12586ba9e538 (
plain)
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
|
/*
* This file is part of the coreboot project.
*
* 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 <console/console.h>
#include <string.h>
#include <arch/acpi.h>
#include <arch/cpu.h>
#include <cbmem.h>
#include <commonlib/helpers.h>
#include <fallback.h>
#include <timestamp.h>
#include <program_loading.h>
#include <romstage_handoff.h>
#include <symbols.h>
#include <cpu/x86/smm.h>
#if ENV_RAMSTAGE || ENV_POSTCAR
/* This is filled with acpi_is_wakeup() call early in ramstage. */
static int acpi_slp_type = -1;
static void acpi_handoff_wakeup(void)
{
if (acpi_slp_type < 0) {
if (romstage_handoff_is_resume()) {
printk(BIOS_DEBUG, "S3 Resume.\n");
acpi_slp_type = ACPI_S3;
} else {
printk(BIOS_DEBUG, "Normal boot.\n");
acpi_slp_type = ACPI_S0;
}
}
}
int acpi_is_wakeup(void)
{
acpi_handoff_wakeup();
/* Both resume from S2 and resume from S3 restart at CPU reset */
return (acpi_slp_type == ACPI_S3 || acpi_slp_type == ACPI_S2);
}
int acpi_is_wakeup_s3(void)
{
acpi_handoff_wakeup();
return (acpi_slp_type == ACPI_S3);
}
int acpi_is_wakeup_s4(void)
{
acpi_handoff_wakeup();
return (acpi_slp_type == ACPI_S4);
}
void acpi_fail_wakeup(void)
{
if (acpi_slp_type == ACPI_S3 || acpi_slp_type == ACPI_S2)
acpi_slp_type = ACPI_S0;
}
#endif /* ENV_RAMSTAGE */
#define WAKEUP_BASE 0x600
asmlinkage void (*acpi_do_wakeup)(uintptr_t vector) = (void *)WAKEUP_BASE;
extern unsigned char __wakeup;
extern unsigned int __wakeup_size;
static void acpi_jump_to_wakeup(void *vector)
{
if (!acpi_s3_resume_allowed()) {
printk(BIOS_WARNING, "ACPI: S3 resume not allowed.\n");
return;
}
/* Copy wakeup trampoline in place. */
memcpy((void *)WAKEUP_BASE, &__wakeup, __wakeup_size);
set_boot_successful();
timestamp_add_now(TS_ACPI_WAKE_JUMP);
acpi_do_wakeup((uintptr_t)vector);
}
void __weak mainboard_suspend_resume(void)
{
}
void acpi_resume(void *wake_vec)
{
if (CONFIG(HAVE_SMI_HANDLER)) {
void *gnvs_address = cbmem_find(CBMEM_ID_ACPI_GNVS);
/* Restore GNVS pointer in SMM if found */
if (gnvs_address) {
printk(BIOS_DEBUG, "Restore GNVS pointer to %p\n",
gnvs_address);
smm_setup_structures(gnvs_address, NULL, NULL);
}
}
/* Call mainboard resume handler first, if defined. */
mainboard_suspend_resume();
post_code(POST_OS_RESUME);
acpi_jump_to_wakeup(wake_vec);
}
|
