1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux 1
2 #ifndef _UAPILINUX_KEXEC_H
3 #define _UAPILINUX_KEXEC_H
4
5 /* kexec system call - It loads the new kerne
6 * kexec does not sync, or unmount filesystems
7 * that to happen you need to do that yourself
8 */
9
10 #include <linux/types.h>
11
12 /* kexec flags for different usage scenarios *
13 #define KEXEC_ON_CRASH 0x00000001
14 #define KEXEC_PRESERVE_CONTEXT 0x00000002
15 #define KEXEC_UPDATE_ELFCOREHDR 0x00000004
16 #define KEXEC_CRASH_HOTPLUG_SUPPORT 0x00000008
17 #define KEXEC_ARCH_MASK 0xffff0000
18
19 /*
20 * Kexec file load interface flags.
21 * KEXEC_FILE_UNLOAD : Unload already loaded k
22 * KEXEC_FILE_ON_CRASH : Load/unload operation
23 * KEXEC_FILE_NO_INITRAMFS : No initramfs is b
24 * fd field.
25 */
26 #define KEXEC_FILE_UNLOAD 0x00000001
27 #define KEXEC_FILE_ON_CRASH 0x00000002
28 #define KEXEC_FILE_NO_INITRAMFS 0x00000004
29 #define KEXEC_FILE_DEBUG 0x00000008
30
31 /* These values match the ELF architecture val
32 * Unless there is a good reason that should c
33 */
34 #define KEXEC_ARCH_DEFAULT ( 0 << 16)
35 #define KEXEC_ARCH_386 ( 3 << 16)
36 #define KEXEC_ARCH_68K ( 4 << 16)
37 #define KEXEC_ARCH_PARISC (15 << 16)
38 #define KEXEC_ARCH_X86_64 (62 << 16)
39 #define KEXEC_ARCH_PPC (20 << 16)
40 #define KEXEC_ARCH_PPC64 (21 << 16)
41 #define KEXEC_ARCH_IA_64 (50 << 16)
42 #define KEXEC_ARCH_ARM (40 << 16)
43 #define KEXEC_ARCH_S390 (22 << 16)
44 #define KEXEC_ARCH_SH (42 << 16)
45 #define KEXEC_ARCH_MIPS_LE (10 << 16)
46 #define KEXEC_ARCH_MIPS ( 8 << 16)
47 #define KEXEC_ARCH_AARCH64 (183 << 16)
48 #define KEXEC_ARCH_RISCV (243 << 16)
49 #define KEXEC_ARCH_LOONGARCH (258 << 16)
50
51 /* The artificial cap on the number of segment
52 #define KEXEC_SEGMENT_MAX 16
53
54 #ifndef __KERNEL__
55 /*
56 * This structure is used to hold the argument
57 * loading kernel binaries.
58 */
59 struct kexec_segment {
60 const void *buf;
61 __kernel_size_t bufsz;
62 const void *mem;
63 __kernel_size_t memsz;
64 };
65
66 #endif /* __KERNEL__ */
67
68 #endif /* _UAPILINUX_KEXEC_H */
69
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