1 #ifndef _ARCH_X86_REALMODE_H 2 #define _ARCH_X86_REALMODE_H 3 4 #include <linux/types.h> 5 #include <asm/io.h> 6 7 /* This must match data at realmode.S */ 8 struct real_mode_header { 9 u32 text_start; 10 u32 ro_end; 11 /* SMP trampoline */ 12 u32 trampoline_start; 13 u32 trampoline_status; 14 u32 trampoline_header; 15 #ifdef CONFIG_X86_64 16 u32 trampoline_pgd; 17 #endif 18 /* ACPI S3 wakeup */ 19 #ifdef CONFIG_ACPI_SLEEP 20 u32 wakeup_start; 21 u32 wakeup_header; 22 #endif 23 /* APM/BIOS reboot */ 24 #ifdef CONFIG_X86_32 25 u32 machine_real_restart_asm; 26 #endif 27 }; 28 29 /* This must match data at trampoline_32/64.S */ 30 struct trampoline_header { 31 #ifdef CONFIG_X86_32 32 u32 start; 33 u16 gdt_pad; 34 u16 gdt_limit; 35 u32 gdt_base; 36 #else 37 u64 start; 38 u64 efer; 39 u32 cr4; 40 #endif 41 }; 42 43 extern struct real_mode_header *real_mode_header; 44 extern unsigned char real_mode_blob_end[]; 45 46 extern unsigned long init_rsp; 47 extern unsigned long initial_code; 48 extern unsigned long initial_gs; 49 50 extern unsigned char real_mode_blob[]; 51 extern unsigned char real_mode_relocs[]; 52 53 #ifdef CONFIG_X86_32 54 extern unsigned char startup_32_smp[]; 55 extern unsigned char boot_gdt[]; 56 #else 57 extern unsigned char secondary_startup_64[]; 58 #endif 59 60 extern void __init setup_real_mode(void); 61 62 #endif /* _ARCH_X86_REALMODE_H */ 63