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_ARCH_MASK 0xffff0000 16 17/* 18 * Kexec file load interface flags. 19 * KEXEC_FILE_UNLOAD : Unload already loaded kexec/kdump image. 20 * KEXEC_FILE_ON_CRASH : Load/unload operation belongs to kdump image. 21 * KEXEC_FILE_NO_INITRAMFS : No initramfs is being loaded. Ignore the initrd 22 * fd field. 23 */ 24#define KEXEC_FILE_UNLOAD 0x00000001 25#define KEXEC_FILE_ON_CRASH 0x00000002 26#define KEXEC_FILE_NO_INITRAMFS 0x00000004 27 28/* These values match the ELF architecture values. 29 * Unless there is a good reason that should continue to be the case. 30 */ 31#define KEXEC_ARCH_DEFAULT ( 0 << 16) 32#define KEXEC_ARCH_386 ( 3 << 16) 33#define KEXEC_ARCH_68K ( 4 << 16) 34#define KEXEC_ARCH_PARISC (15 << 16) 35#define KEXEC_ARCH_X86_64 (62 << 16) 36#define KEXEC_ARCH_PPC (20 << 16) 37#define KEXEC_ARCH_PPC64 (21 << 16) 38#define KEXEC_ARCH_IA_64 (50 << 16) 39#define KEXEC_ARCH_ARM (40 << 16) 40#define KEXEC_ARCH_S390 (22 << 16) 41#define KEXEC_ARCH_SH (42 << 16) 42#define KEXEC_ARCH_MIPS_LE (10 << 16) 43#define KEXEC_ARCH_MIPS ( 8 << 16) 44#define KEXEC_ARCH_AARCH64 (183 << 16) 45 46/* The artificial cap on the number of segments passed to kexec_load. */ 47#define KEXEC_SEGMENT_MAX 16 48 49#ifndef __KERNEL__ 50/* 51 * This structure is used to hold the arguments that are used when 52 * loading kernel binaries. 53 */ 54struct kexec_segment { 55 const void *buf; 56 size_t bufsz; 57 const void *mem; 58 size_t memsz; 59}; 60 61#endif /* __KERNEL__ */ 62 63#endif /* _UAPILINUX_KEXEC_H */ 64