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