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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

/* 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_68K     ( 4 << 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 */