/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

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#ifndef LINUX_KEXEC_H

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#define LINUX_KEXEC_H

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/* kexec system call - It loads the new kernel to boot into.

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* kexec does not sync, or unmount filesystems so if you need

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* that to happen you need to do that yourself.

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*/

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#include <linux/types.h>

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/* kexec flags for different usage scenarios */

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#define KEXEC_ON_CRASH 0x00000001

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#define KEXEC_PRESERVE_CONTEXT 0x00000002

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#define KEXEC_ARCH_MASK 0xffff0000

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/*

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* Kexec file load interface flags.

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* KEXEC_FILE_UNLOAD : Unload already loaded kexec/kdump image.

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* KEXEC_FILE_ON_CRASH : Load/unload operation belongs to kdump image.

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* KEXEC_FILE_NO_INITRAMFS : No initramfs is being loaded. Ignore the initrd

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* fd field.

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*/

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#define KEXEC_FILE_UNLOAD 0x00000001

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#define KEXEC_FILE_ON_CRASH 0x00000002

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#define KEXEC_FILE_NO_INITRAMFS 0x00000004

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/* These values match the ELF architecture values.

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* Unless there is a good reason that should continue to be the case.

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*/

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#define KEXEC_ARCH_DEFAULT ( 0 << 16)

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#define KEXEC_ARCH_386 ( 3 << 16)

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#define KEXEC_ARCH_68K ( 4 << 16)

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#define KEXEC_ARCH_X86_64 (62 << 16)

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#define KEXEC_ARCH_PPC (20 << 16)

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#define KEXEC_ARCH_PPC64 (21 << 16)

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#define KEXEC_ARCH_IA_64 (50 << 16)

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#define KEXEC_ARCH_ARM (40 << 16)

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#define KEXEC_ARCH_S390 (22 << 16)

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#define KEXEC_ARCH_SH (42 << 16)

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#define KEXEC_ARCH_MIPS_LE (10 << 16)

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#define KEXEC_ARCH_MIPS ( 8 << 16)

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#define KEXEC_ARCH_AARCH64 (183 << 16)

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/* The artificial cap on the number of segments passed to kexec_load. */

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#define KEXEC_SEGMENT_MAX 16

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/*

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* This structure is used to hold the arguments that are used when

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* loading kernel binaries.

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*/

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struct kexec_segment {

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const void *buf;

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size_t bufsz;

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const void *mem;

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size_t memsz;

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};

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#endif /* LINUX_KEXEC_H */

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