arch/arm64/kernel/cpu-reset.h

   1 /*
   2  * CPU reset routines
   3  *
   4  * Copyright (C) 2015 Huawei Futurewei Technologies.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 #ifndef _ARM64_CPU_RESET_H
  12 #define _ARM64_CPU_RESET_H
  13
  14 #include <asm/virt.h>
  15
  16 void __cpu_soft_restart(unsigned long el2_switch, unsigned long entry,
  17         unsigned long arg0, unsigned long arg1, unsigned long arg2);
  18
  19 static inline void __noreturn cpu_soft_restart(unsigned long entry,
  20                                                unsigned long arg0,
  21                                                unsigned long arg1,
  22                                                unsigned long arg2)
  23 {
  24         typeof(__cpu_soft_restart) *restart;
  25
  26         unsigned long el2_switch = !is_kernel_in_hyp_mode() &&
  27                 is_hyp_mode_available();
  28         restart = (void *)__pa_symbol(__cpu_soft_restart);
  29
  30         cpu_install_idmap();
  31         restart(el2_switch, entry, arg0, arg1, arg2);
  32         unreachable();
  33 }
  34
  35 #endif