arch/arm64/include/asm/kexec.h

   1 /*
   2  * kexec for arm64
   3  *
   4  * Copyright (C) Linaro.
   5  * Copyright (C) Huawei Futurewei Technologies.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #ifndef _ARM64_KEXEC_H
  13 #define _ARM64_KEXEC_H
  14
  15 /* Maximum physical address we can use pages from */
  16
  17 #define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
  18
  19 /* Maximum address we can reach in physical address mode */
  20
  21 #define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
  22
  23 /* Maximum address we can use for the control code buffer */
  24
  25 #define KEXEC_CONTROL_MEMORY_LIMIT (-1UL)
  26
  27 #define KEXEC_CONTROL_PAGE_SIZE 4096
  28
  29 #define KEXEC_ARCH KEXEC_ARCH_AARCH64
  30
  31 #ifndef __ASSEMBLY__
  32
  33 /**
  34  * crash_setup_regs() - save registers for the panic kernel
  35  *
  36  * @newregs: registers are saved here
  37  * @oldregs: registers to be saved (may be %NULL)
  38  */
  39
  40 static inline void crash_setup_regs(struct pt_regs *newregs,
  41                                     struct pt_regs *oldregs)
  42 {
  43         /* Empty routine needed to avoid build errors. */
  44 }
  45
  46 #endif /* __ASSEMBLY__ */
  47
  48 #endif