1 /*
2  * Definitions for the wakeup data structure at the head of the
3  * wakeup code.
4  */
5 
6 #ifndef ARCH_X86_KERNEL_ACPI_RM_WAKEUP_H
7 #define ARCH_X86_KERNEL_ACPI_RM_WAKEUP_H
8 
9 #ifndef __ASSEMBLY__
10 #include <linux/types.h>
11 
12 /* This must match data at wakeup.S */
13 struct wakeup_header {
14 	u16 video_mode;		/* Video mode number */
15 	u16 _jmp1;		/* ljmpl opcode, 32-bit only */
16 	u32 pmode_entry;	/* Protected mode resume point, 32-bit only */
17 	u16 _jmp2;		/* CS value, 32-bit only */
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 	u16 trampoline_segment;	/* segment with trampoline code, 64-bit only */
30 	u8  _pad1;
31 	u8  wakeup_jmp;
32 	u16 wakeup_jmp_off;
33 	u16 wakeup_jmp_seg;
34 	u64 wakeup_gdt[3];
35 	u32 signature;		/* To check we have correct structure */
36 } __attribute__((__packed__));
37 
38 extern struct wakeup_header wakeup_header;
39 #endif
40 
41 #define WAKEUP_HEADER_OFFSET	8
42 #define WAKEUP_HEADER_SIGNATURE 0x51ee1111
43 #define WAKEUP_END_SIGNATURE	0x65a22c82
44 
45 /* Wakeup behavior bits */
46 #define WAKEUP_BEHAVIOR_RESTORE_MISC_ENABLE     0
47 
48 #endif /* ARCH_X86_KERNEL_ACPI_RM_WAKEUP_H */
49