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 /* These values match the ELF architecture values. 17 * Unless there is a good reason that should continue to be the case. 18 */ 19 #define KEXEC_ARCH_DEFAULT ( 0 << 16) 20 #define KEXEC_ARCH_386 ( 3 << 16) 21 #define KEXEC_ARCH_X86_64 (62 << 16) 22 #define KEXEC_ARCH_PPC (20 << 16) 23 #define KEXEC_ARCH_PPC64 (21 << 16) 24 #define KEXEC_ARCH_IA_64 (50 << 16) 25 #define KEXEC_ARCH_ARM (40 << 16) 26 #define KEXEC_ARCH_S390 (22 << 16) 27 #define KEXEC_ARCH_SH (42 << 16) 28 #define KEXEC_ARCH_MIPS_LE (10 << 16) 29 #define KEXEC_ARCH_MIPS ( 8 << 16) 30 31 /* The artificial cap on the number of segments passed to kexec_load. */ 32 #define KEXEC_SEGMENT_MAX 16 33 34 #ifndef __KERNEL__ 35 /* 36 * This structure is used to hold the arguments that are used when 37 * loading kernel binaries. 38 */ 39 struct kexec_segment { 40 const void *buf; 41 size_t bufsz; 42 const void *mem; 43 size_t memsz; 44 }; 45 46 /* Load a new kernel image as described by the kexec_segment array 47 * consisting of passed number of segments at the entry-point address. 48 * The flags allow different useage types. 49 */ 50 extern int kexec_load(void *, size_t, struct kexec_segment *, 51 unsigned long int); 52 #endif /* __KERNEL__ */ 53 54 #endif /* _UAPILINUX_KEXEC_H */ 55