1#ifndef _UAPILINUX_KEXEC_H
2#define _UAPILINUX_KEXEC_H
3
4/* kexec system call -  It loads the new kernel to boot into.
5 * kexec does not sync, or unmount filesystems so if you need
6 * that to happen you need to do that yourself.
7 */
8
9#include <linux/types.h>
10
11/* kexec flags for different usage scenarios */
12#define KEXEC_ON_CRASH		0x00000001
13#define KEXEC_PRESERVE_CONTEXT	0x00000002
14#define KEXEC_ARCH_MASK		0xffff0000
15
16/*
17 * Kexec file load interface flags.
18 * KEXEC_FILE_UNLOAD : Unload already loaded kexec/kdump image.
19 * KEXEC_FILE_ON_CRASH : Load/unload operation belongs to kdump image.
20 * KEXEC_FILE_NO_INITRAMFS : No initramfs is being loaded. Ignore the initrd
21 *                           fd field.
22 */
23#define KEXEC_FILE_UNLOAD	0x00000001
24#define KEXEC_FILE_ON_CRASH	0x00000002
25#define KEXEC_FILE_NO_INITRAMFS	0x00000004
26
27/* These values match the ELF architecture values.
28 * Unless there is a good reason that should continue to be the case.
29 */
30#define KEXEC_ARCH_DEFAULT ( 0 << 16)
31#define KEXEC_ARCH_386     ( 3 << 16)
32#define KEXEC_ARCH_68K     ( 4 << 16)
33#define KEXEC_ARCH_X86_64  (62 << 16)
34#define KEXEC_ARCH_PPC     (20 << 16)
35#define KEXEC_ARCH_PPC64   (21 << 16)
36#define KEXEC_ARCH_IA_64   (50 << 16)
37#define KEXEC_ARCH_ARM     (40 << 16)
38#define KEXEC_ARCH_S390    (22 << 16)
39#define KEXEC_ARCH_SH      (42 << 16)
40#define KEXEC_ARCH_MIPS_LE (10 << 16)
41#define KEXEC_ARCH_MIPS    ( 8 << 16)
42
43/* The artificial cap on the number of segments passed to kexec_load. */
44#define KEXEC_SEGMENT_MAX 16
45
46#ifndef __KERNEL__
47/*
48 * This structure is used to hold the arguments that are used when
49 * loading  kernel binaries.
50 */
51struct kexec_segment {
52	const void *buf;
53	size_t bufsz;
54	const void *mem;
55	size_t memsz;
56};
57
58#endif /* __KERNEL__ */
59
60#endif /* _UAPILINUX_KEXEC_H */
61