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kernel/linux-imx6_3.14.28/include/uapi/linux/kexec.h 1.61 KB
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  #ifndef _UAPILINUX_KEXEC_H
  #define _UAPILINUX_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
  
  #ifndef __KERNEL__
  /*
   * 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 /* __KERNEL__ */
  
  #endif /* _UAPILINUX_KEXEC_H */