blob: 42d2ff15c592d41ab6058d5d543f008f1179a220 [file] [log] [blame]
Eric W. Biederman5234f5e2005-06-25 14:58:02 -07001#ifndef _X86_64_KEXEC_H
2#define _X86_64_KEXEC_H
3
4#include <asm/page.h>
5#include <asm/proto.h>
6
7/*
8 * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return.
9 * I.e. Maximum page that is mapped directly into kernel memory,
10 * and kmap is not required.
11 *
12 * So far x86_64 is limited to 40 physical address bits.
13 */
14
15/* Maximum physical address we can use pages from */
16#define KEXEC_SOURCE_MEMORY_LIMIT (0xFFFFFFFFFFUL)
17/* Maximum address we can reach in physical address mode */
18#define KEXEC_DESTINATION_MEMORY_LIMIT (0xFFFFFFFFFFUL)
19/* Maximum address we can use for the control pages */
20#define KEXEC_CONTROL_MEMORY_LIMIT (0xFFFFFFFFFFUL)
21
22/* Allocate one page for the pdp and the second for the code */
23#define KEXEC_CONTROL_CODE_SIZE (4096UL + 4096UL)
24
25/* The native architecture */
26#define KEXEC_ARCH KEXEC_ARCH_X86_64
27
Vivek Goyal625f1c822005-06-25 14:58:12 -070028#define MAX_NOTE_BYTES 1024
29typedef u32 note_buf_t[MAX_NOTE_BYTES/4];
30
31extern note_buf_t crash_notes[];
32
Eric W. Biederman5234f5e2005-06-25 14:58:02 -070033#endif /* _X86_64_KEXEC_H */