wakeup.h 1.4 KB

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  1. /*
  2. * Definitions for the wakeup data structure at the head of the
  3. * wakeup code.
  4. */
  5. #ifndef ARCH_X86_KERNEL_ACPI_RM_WAKEUP_H
  6. #define ARCH_X86_KERNEL_ACPI_RM_WAKEUP_H
  7. #ifndef __ASSEMBLY__
  8. #include <linux/types.h>
  9. /* This must match data at wakeup.S */
  10. struct wakeup_header {
  11. u16 video_mode; /* Video mode number */
  12. u16 _jmp1; /* ljmpl opcode, 32-bit only */
  13. u32 pmode_entry; /* Protected mode resume point, 32-bit only */
  14. u16 _jmp2; /* CS value, 32-bit only */
  15. u32 pmode_cr0; /* Protected mode cr0 */
  16. u32 pmode_cr3; /* Protected mode cr3 */
  17. u32 pmode_cr4; /* Protected mode cr4 */
  18. u32 pmode_efer_low; /* Protected mode EFER */
  19. u32 pmode_efer_high;
  20. u64 pmode_gdt;
  21. u32 pmode_misc_en_low; /* Protected mode MISC_ENABLE */
  22. u32 pmode_misc_en_high;
  23. u32 pmode_behavior; /* Wakeup routine behavior flags */
  24. u32 realmode_flags;
  25. u32 real_magic;
  26. u16 trampoline_segment; /* segment with trampoline code, 64-bit only */
  27. u8 _pad1;
  28. u8 wakeup_jmp;
  29. u16 wakeup_jmp_off;
  30. u16 wakeup_jmp_seg;
  31. u64 wakeup_gdt[3];
  32. u32 signature; /* To check we have correct structure */
  33. } __attribute__((__packed__));
  34. extern struct wakeup_header wakeup_header;
  35. #endif
  36. #define WAKEUP_HEADER_OFFSET 8
  37. #define WAKEUP_HEADER_SIGNATURE 0x51ee1111
  38. #define WAKEUP_END_SIGNATURE 0x65a22c82
  39. /* Wakeup behavior bits */
  40. #define WAKEUP_BEHAVIOR_RESTORE_MISC_ENABLE 0
  41. #endif /* ARCH_X86_KERNEL_ACPI_RM_WAKEUP_H */