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kernel add
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#ifndef _ARCH_X86_REALMODE_H
#define _ARCH_X86_REALMODE_H
#include <linux/types.h>
#include <asm/io.h>
/* This must match data at realmode.S */
struct real_mode_header {
u32 text_start;
u32 ro_end;
/* SMP trampoline */
u32 trampoline_start;
u32 trampoline_status;
u32 trampoline_header;
#ifdef CONFIG_X86_64
u32 trampoline_pgd;
#endif
/* ACPI S3 wakeup */
#ifdef CONFIG_ACPI_SLEEP
u32 wakeup_start;
u32 wakeup_header;
#endif
/* APM/BIOS reboot */
u32 machine_real_restart_asm;
#ifdef CONFIG_X86_64
u32 machine_real_restart_seg;
#endif
};
/* This must match data at trampoline_32/64.S */
struct trampoline_header {
#ifdef CONFIG_X86_32
u32 start;
u16 gdt_pad;
u16 gdt_limit;
u32 gdt_base;
#else
u64 start;
u64 efer;
u32 cr4;
#endif
};
extern struct real_mode_header *real_mode_header;
extern unsigned char real_mode_blob_end[];
extern unsigned long init_rsp;
extern unsigned long initial_code;
extern unsigned long initial_gs;
extern unsigned char real_mode_blob[];
extern unsigned char real_mode_relocs[];
#ifdef CONFIG_X86_32
extern unsigned char startup_32_smp[];
extern unsigned char boot_gdt[];
#else
extern unsigned char secondary_startup_64[];
#endif
void reserve_real_mode(void);
void setup_real_mode(void);
#endif /* _ARCH_X86_REALMODE_H */
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