wakeup.h

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/*
 * 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
#define WAKEUP_BEHAVIOR_RESTORE_CR4     1
#define WAKEUP_BEHAVIOR_RESTORE_EFER        2

#endif /* ARCH_X86_KERNEL_ACPI_RM_WAKEUP_H */