1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
2 | #ifndef _UAPILINUX_KEXEC_H |
3 | #define _UAPILINUX_KEXEC_H |
4 | |
5 | /* kexec system call - It loads the new kernel to boot into. |
6 | * kexec does not sync, or unmount filesystems so if you need |
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_ARCH_MASK 0xffff0000 |
17 | |
18 | /* |
19 | * Kexec file load interface flags. |
20 | * KEXEC_FILE_UNLOAD : Unload already loaded kexec/kdump image. |
21 | * KEXEC_FILE_ON_CRASH : Load/unload operation belongs to kdump image. |
22 | * KEXEC_FILE_NO_INITRAMFS : No initramfs is being loaded. Ignore the initrd |
23 | * fd field. |
24 | */ |
25 | #define KEXEC_FILE_UNLOAD 0x00000001 |
26 | #define KEXEC_FILE_ON_CRASH 0x00000002 |
27 | #define KEXEC_FILE_NO_INITRAMFS 0x00000004 |
28 | |
29 | /* These values match the ELF architecture values. |
30 | * Unless there is a good reason that should continue to be the case. |
31 | */ |
32 | #define KEXEC_ARCH_DEFAULT ( 0 << 16) |
33 | #define KEXEC_ARCH_386 ( 3 << 16) |
34 | #define KEXEC_ARCH_68K ( 4 << 16) |
35 | #define KEXEC_ARCH_PARISC (15 << 16) |
36 | #define KEXEC_ARCH_X86_64 (62 << 16) |
37 | #define KEXEC_ARCH_PPC (20 << 16) |
38 | #define KEXEC_ARCH_PPC64 (21 << 16) |
39 | #define KEXEC_ARCH_IA_64 (50 << 16) |
40 | #define KEXEC_ARCH_ARM (40 << 16) |
41 | #define KEXEC_ARCH_S390 (22 << 16) |
42 | #define KEXEC_ARCH_SH (42 << 16) |
43 | #define KEXEC_ARCH_MIPS_LE (10 << 16) |
44 | #define KEXEC_ARCH_MIPS ( 8 << 16) |
45 | #define KEXEC_ARCH_AARCH64 (183 << 16) |
46 | #define KEXEC_ARCH_RISCV (243 << 16) |
47 | #define KEXEC_ARCH_LOONGARCH (258 << 16) |
48 | |
49 | /* The artificial cap on the number of segments passed to kexec_load. */ |
50 | #define KEXEC_SEGMENT_MAX 16 |
51 | |
52 | #ifndef __KERNEL__ |
53 | /* |
54 | * This structure is used to hold the arguments that are used when |
55 | * loading kernel binaries. |
56 | */ |
57 | struct kexec_segment { |
58 | const void *buf; |
59 | __kernel_size_t bufsz; |
60 | const void *mem; |
61 | __kernel_size_t memsz; |
62 | }; |
63 | |
64 | #endif /* __KERNEL__ */ |
65 | |
66 | #endif /* _UAPILINUX_KEXEC_H */ |
67 | |