diff options
Diffstat (limited to 'kernel/arch/x86/include/asm/realmode.h')
| -rw-r--r-- | kernel/arch/x86/include/asm/realmode.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/kernel/arch/x86/include/asm/realmode.h b/kernel/arch/x86/include/asm/realmode.h new file mode 100644 index 000000000..9c6b890d5 --- /dev/null +++ b/kernel/arch/x86/include/asm/realmode.h @@ -0,0 +1,64 @@ +#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 */ |