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