LXR linux/arch/x86/realmode/rm/wakeup.h

   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 */
  13struct wakeup_header {
  14        u16 video_mode;         /* Video mode number */
  15        u32 pmode_entry;        /* Protected mode resume point, 32-bit only */
  16        u16 pmode_cs;
  17        u32 pmode_cr0;          /* Protected mode cr0 */
  18        u32 pmode_cr3;          /* Protected mode cr3 */
  19        u32 pmode_cr4;          /* Protected mode cr4 */
  20        u32 pmode_efer_low;     /* Protected mode EFER */
  21        u32 pmode_efer_high;
  22        u64 pmode_gdt;
  23        u32 pmode_misc_en_low;  /* Protected mode MISC_ENABLE */
  24        u32 pmode_misc_en_high;
  25        u32 pmode_behavior;     /* Wakeup routine behavior flags */
  26        u32 realmode_flags;
  27        u32 real_magic;
  28        u32 signature;          /* To check we have correct structure */
  29} __attribute__((__packed__));
  30
  31extern struct wakeup_header wakeup_header;
  32#endif
  33
  34#define WAKEUP_HEADER_OFFSET    8
  35#define WAKEUP_HEADER_SIGNATURE 0x51ee1111
  36
  37/* Wakeup behavior bits */
  38#define WAKEUP_BEHAVIOR_RESTORE_MISC_ENABLE     0
  39#define WAKEUP_BEHAVIOR_RESTORE_CR4             1
  40#define WAKEUP_BEHAVIOR_RESTORE_EFER            2
  41
  42#endif /* ARCH_X86_KERNEL_ACPI_RM_WAKEUP_H */
  43