f37240f16b
Added header for trampoline code that can be used to supply input data to it. This makes interface between real mode code and kernel cleaner and simpler. Replaced two confusing pointers to level4 pgt in trampoline_64.S with a single pointer to the beginning of the page table. Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-21-git-send-email-jarkko.sakkinen@intel.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
60 lines
1.2 KiB
C
60 lines
1.2 KiB
C
#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 */
|
|
#ifdef CONFIG_X86_32
|
|
u32 machine_real_restart_asm;
|
|
#endif
|
|
} __attribute__((__packed__));
|
|
|
|
/* This must match data at trampoline_32/64.S */
|
|
struct trampoline_header {
|
|
#ifdef CONFIG_X86_32
|
|
u32 start;
|
|
u16 gdt_limit;
|
|
u32 gdt_base;
|
|
#else
|
|
u64 start;
|
|
#endif
|
|
} __attribute__((__packed__));
|
|
|
|
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
|
|
|
|
extern void __init setup_real_mode(void);
|
|
|
|
#endif /* _ARCH_X86_REALMODE_H */
|