LXR linux/arch/s390/include/asm/kexec.h

   1/*
   2 * include/asm-s390/kexec.h
   3 *
   4 * (C) Copyright IBM Corp. 2005
   5 *
   6 * Author(s): Rolf Adelsberger <adelsberger@de.ibm.com>
   7 *
   8 */
   9
  10#ifndef _S390_KEXEC_H
  11#define _S390_KEXEC_H
  12
  13#ifdef __KERNEL__
  14#include <asm/page.h>
  15#endif
  16#include <asm/processor.h>
  17/*
  18 * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return.
  19 * I.e. Maximum page that is mapped directly into kernel memory,
  20 * and kmap is not required.
  21 */
  22
  23/* Maximum physical address we can use pages from */
  24#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
  25
  26/* Maximum address we can reach in physical address mode */
  27#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
  28
  29/* Maximum address we can use for the control pages */
  30/* Not more than 2GB */
  31#define KEXEC_CONTROL_MEMORY_LIMIT (1UL<<31)
  32
  33/* Allocate one page for the pdp and the second for the code */
  34#define KEXEC_CONTROL_PAGE_SIZE 4096
  35
  36/* The native architecture */
  37#define KEXEC_ARCH KEXEC_ARCH_S390
  38
  39/* Provide a dummy definition to avoid build failures. */
  40static inline void crash_setup_regs(struct pt_regs *newregs,
  41                                        struct pt_regs *oldregs) { }
  42
  43#endif /*_S390_KEXEC_H */
  44