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 u32 machine_real_restart_asm; 25 #ifdef CONFIG_X86_64 26 u32 machine_real_restart_seg; 27 #endif 28 }; 29 30 /* This must match data at trampoline_32/64.S */ 31 struct trampoline_header { 32 #ifdef CONFIG_X86_32 33 u32 start; 34 u16 gdt_pad; 35 u16 gdt_limit; 36 u32 gdt_base; 37 #else 38 u64 start; 39 u64 efer; 40 u32 cr4; 41 #endif 42 }; 43 44 extern struct real_mode_header *real_mode_header; 45 extern unsigned char real_mode_blob_end[]; 46 47 extern unsigned long init_rsp; 48 extern unsigned long initial_code; 49 extern unsigned long initial_gs; 50 51 extern unsigned char real_mode_blob[]; 52 extern unsigned char real_mode_relocs[]; 53 54 #ifdef CONFIG_X86_32 55 extern unsigned char startup_32_smp[]; 56 extern unsigned char boot_gdt[]; 57 #else 58 extern unsigned char secondary_startup_64[]; 59 #endif 60 61 void reserve_real_mode(void); 62 void setup_real_mode(void); 63 64 #endif /* _ARCH_X86_REALMODE_H */ 65