blob: 1c304321a252680a530b9d37912e3677762108f8 (
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
|
/* SPDX-License-Identifier: GPL-2.0-only */
#include <console/console.h>
#include <string.h>
#include <acpi/acpi.h>
#include <arch/cpu.h>
#include <commonlib/helpers.h>
#include <cpu/x86/smm.h>
#include <fallback.h>
#include <timestamp.h>
#include <romstage_handoff.h>
#if ENV_RAMSTAGE || ENV_POSTCAR
/* This is filled with acpi_is_wakeup_s3() 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_s3(void)
{
acpi_handoff_wakeup();
return (acpi_slp_type == ACPI_S3);
}
#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;
void __weak mainboard_suspend_resume(void)
{
}
void __noreturn acpi_resume(void *wake_vec)
{
/* Restore GNVS pointer in SMM if found. */
apm_control(APM_CNT_GNVS_UPDATE);
/* Call mainboard resume handler first, if defined. */
mainboard_suspend_resume();
/* Copy wakeup trampoline in place. */
memcpy((void *)WAKEUP_BASE, &__wakeup, __wakeup_size);
set_boot_successful();
timestamp_add_now(TS_ACPI_WAKE_JUMP);
post_code(POST_OS_RESUME);
acpi_do_wakeup((uintptr_t)wake_vec);
die("Failed the jump to wakeup vector\n");
}
|
