kexec.h (2096B) - Raw
1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 #ifndef LINUX_KEXEC_H 3 #define LINUX_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_CRASH_HOTPLUG_SUPPORT 0x00000008 17 #define KEXEC_ARCH_MASK 0xffff0000 18 19 /* 20 * Kexec file load interface flags. 21 * KEXEC_FILE_UNLOAD : Unload already loaded kexec/kdump image. 22 * KEXEC_FILE_ON_CRASH : Load/unload operation belongs to kdump image. 23 * KEXEC_FILE_NO_INITRAMFS : No initramfs is being loaded. Ignore the initrd 24 * fd field. 25 */ 26 #define KEXEC_FILE_UNLOAD 0x00000001 27 #define KEXEC_FILE_ON_CRASH 0x00000002 28 #define KEXEC_FILE_NO_INITRAMFS 0x00000004 29 #define KEXEC_FILE_DEBUG 0x00000008 30 31 /* These values match the ELF architecture values. 32 * Unless there is a good reason that should continue to be the case. 33 */ 34 #define KEXEC_ARCH_DEFAULT ( 0 << 16) 35 #define KEXEC_ARCH_386 ( 3 << 16) 36 #define KEXEC_ARCH_68K ( 4 << 16) 37 #define KEXEC_ARCH_PARISC (15 << 16) 38 #define KEXEC_ARCH_X86_64 (62 << 16) 39 #define KEXEC_ARCH_PPC (20 << 16) 40 #define KEXEC_ARCH_PPC64 (21 << 16) 41 #define KEXEC_ARCH_IA_64 (50 << 16) 42 #define KEXEC_ARCH_ARM (40 << 16) 43 #define KEXEC_ARCH_S390 (22 << 16) 44 #define KEXEC_ARCH_SH (42 << 16) 45 #define KEXEC_ARCH_MIPS_LE (10 << 16) 46 #define KEXEC_ARCH_MIPS ( 8 << 16) 47 #define KEXEC_ARCH_AARCH64 (183 << 16) 48 #define KEXEC_ARCH_RISCV (243 << 16) 49 #define KEXEC_ARCH_LOONGARCH (258 << 16) 50 51 /* The artificial cap on the number of segments passed to kexec_load. */ 52 #define KEXEC_SEGMENT_MAX 16 53 54 /* 55 * This structure is used to hold the arguments that are used when 56 * loading kernel binaries. 57 */ 58 struct kexec_segment { 59 const void *buf; 60 __kernel_size_t bufsz; 61 const void *mem; 62 __kernel_size_t memsz; 63 }; 64 65 66 #endif /* LINUX_KEXEC_H */