tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 */
8struct 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 */
31struct 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
44extern struct real_mode_header *real_mode_header;
45extern unsigned char real_mode_blob_end[];
46
47extern unsigned long init_rsp;
48extern unsigned long initial_code;
49extern unsigned long initial_gs;
50
51extern unsigned char real_mode_blob[];
52extern unsigned char real_mode_relocs[];
53
54#ifdef CONFIG_X86_32
55extern unsigned char startup_32_smp[];
56extern unsigned char boot_gdt[];
57#else
58extern unsigned char secondary_startup_64[];
59#endif
60
61extern void __init setup_real_mode(void);
62
63#endif /* _ARCH_X86_REALMODE_H */