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