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 el2_switch,
  20         unsigned long entry, unsigned long arg0, unsigned long arg1,
  21         unsigned long arg2)
  22 {
  23         typeof(__cpu_soft_restart) *restart;
  24
  25         el2_switch = el2_switch && !is_kernel_in_hyp_mode() &&
  26                 is_hyp_mode_available();
  27         restart = (void *)virt_to_phys(__cpu_soft_restart);
  28
  29         cpu_install_idmap();
  30         restart(el2_switch, entry, arg0, arg1, arg2);
  31         unreachable();
  32 }
  33
  34 #endif