summaryrefslogtreecommitdiffstats
path: root/arch/x86/realmode/rm/wakeup.h
blob: 9317e0042f24b9f49d3e5d5eafac20424bea574d (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
/*
 * Definitions for the wakeup data structure at the head of the
 * wakeup code.
 */

#ifndef ARCH_X86_KERNEL_ACPI_RM_WAKEUP_H
#define ARCH_X86_KERNEL_ACPI_RM_WAKEUP_H

#ifndef __ASSEMBLY__
#include <linux/types.h>

/* This must match data at wakeup.S */
struct wakeup_header {
	u16 video_mode;		/* Video mode number */
	u32 pmode_entry;	/* Protected mode resume point, 32-bit only */
	u16 pmode_cs;
	u32 pmode_cr0;		/* Protected mode cr0 */
	u32 pmode_cr3;		/* Protected mode cr3 */
	u32 pmode_cr4;		/* Protected mode cr4 */
	u32 pmode_efer_low;	/* Protected mode EFER */
	u32 pmode_efer_high;
	u64 pmode_gdt;
	u32 pmode_misc_en_low;	/* Protected mode MISC_ENABLE */
	u32 pmode_misc_en_high;
	u32 pmode_behavior;	/* Wakeup routine behavior flags */
	u32 realmode_flags;
	u32 real_magic;
	u32 signature;		/* To check we have correct structure */
} __attribute__((__packed__));

extern struct wakeup_header wakeup_header;
#endif

#define WAKEUP_HEADER_OFFSET	8
#define WAKEUP_HEADER_SIGNATURE 0x51ee1111

/* Wakeup behavior bits */
#define WAKEUP_BEHAVIOR_RESTORE_MISC_ENABLE     0

#endif /* ARCH_X86_KERNEL_ACPI_RM_WAKEUP_H */