1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Definitions for the wakeup data structure at the head of the
4 * wakeup code.
5 */
6
7#ifndef ARCH_X86_KERNEL_ACPI_RM_WAKEUP_H
8#define ARCH_X86_KERNEL_ACPI_RM_WAKEUP_H
9
10#ifndef __ASSEMBLY__
11#include <linux/types.h>
12
13/* This must match data at wakeup.S */
14struct wakeup_header {
15	u16 video_mode;		/* Video mode number */
16	u32 pmode_entry;	/* Protected mode resume point, 32-bit only */
17	u16 pmode_cs;
18	u32 pmode_cr0;		/* Protected mode cr0 */
19	u32 pmode_cr3;		/* Protected mode cr3 */
20	u32 pmode_cr4;		/* Protected mode cr4 */
21	u32 pmode_efer_low;	/* Protected mode EFER */
22	u32 pmode_efer_high;
23	u64 pmode_gdt;
24	u32 pmode_misc_en_low;	/* Protected mode MISC_ENABLE */
25	u32 pmode_misc_en_high;
26	u32 pmode_behavior;	/* Wakeup routine behavior flags */
27	u32 realmode_flags;
28	u32 real_magic;
29	u32 signature;		/* To check we have correct structure */
30} __attribute__((__packed__));
31
32extern struct wakeup_header wakeup_header;
33#endif
34
35#define WAKEUP_HEADER_OFFSET	8
36#define WAKEUP_HEADER_SIGNATURE 0x51ee1111
37
38/* Wakeup behavior bits */
39#define WAKEUP_BEHAVIOR_RESTORE_MISC_ENABLE     0
40#define WAKEUP_BEHAVIOR_RESTORE_CR4		1
41#define WAKEUP_BEHAVIOR_RESTORE_EFER		2
42
43#endif /* ARCH_X86_KERNEL_ACPI_RM_WAKEUP_H */
44