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#ifndef LINUX_KEXEC_H
#define LINUX_KEXEC_H
/* kexec system call - It loads the new kernel to boot into.
* kexec does not sync, or unmount filesystems so if you need
* that to happen you need to do that yourself.
*/
#include <linux/types.h>
/* kexec flags for different usage scenarios */
#define KEXEC_ON_CRASH 0x00000001
#define KEXEC_PRESERVE_CONTEXT 0x00000002
#define KEXEC_ARCH_MASK 0xffff0000
/*
* Kexec file load interface flags.
* KEXEC_FILE_UNLOAD : Unload already loaded kexec/kdump image.
* KEXEC_FILE_ON_CRASH : Load/unload operation belongs to kdump image.
* KEXEC_FILE_NO_INITRAMFS : No initramfs is being loaded. Ignore the initrd
* fd field.
*/
#define KEXEC_FILE_UNLOAD 0x00000001
#define KEXEC_FILE_ON_CRASH 0x00000002
#define KEXEC_FILE_NO_INITRAMFS 0x00000004
/* These values match the ELF architecture values.
* Unless there is a good reason that should continue to be the case.
*/
#define KEXEC_ARCH_DEFAULT ( 0 << 16)
#define KEXEC_ARCH_386 ( 3 << 16)
#define KEXEC_ARCH_X86_64 (62 << 16)
#define KEXEC_ARCH_PPC (20 << 16)
#define KEXEC_ARCH_PPC64 (21 << 16)
#define KEXEC_ARCH_IA_64 (50 << 16)
#define KEXEC_ARCH_ARM (40 << 16)
#define KEXEC_ARCH_S390 (22 << 16)
#define KEXEC_ARCH_SH (42 << 16)
#define KEXEC_ARCH_MIPS_LE (10 << 16)
#define KEXEC_ARCH_MIPS ( 8 << 16)
/* The artificial cap on the number of segments passed to kexec_load. */
#define KEXEC_SEGMENT_MAX 16
/*
* This structure is used to hold the arguments that are used when
* loading kernel binaries.
*/
struct kexec_segment {
const void *buf;
size_t bufsz;
const void *mem;
size_t memsz;
};
/* Load a new kernel image as described by the kexec_segment array
* consisting of passed number of segments at the entry-point address.
* The flags allow different useage types.
*/
extern int kexec_load(void *, size_t, struct kexec_segment *,
unsigned long int);
#endif /* LINUX_KEXEC_H */