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/* SPDX-License-Identifier: GPL-2.0 */
/*
* 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 */
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