arch/arm64/kernel/cpu-reset.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * CPU reset routines
   4  *
   5  * Copyright (C) 2015 Huawei Futurewei Technologies.
   6  */
   7
   8 #ifndef _ARM64_CPU_RESET_H
   9 #define _ARM64_CPU_RESET_H
  10
  11 #include <asm/virt.h>
  12
  13 void __cpu_soft_restart(unsigned long el2_switch, unsigned long entry,
  14         unsigned long arg0, unsigned long arg1, unsigned long arg2);
  15
  16 static inline void __noreturn __nocfi cpu_soft_restart(unsigned long entry,
  17                                                        unsigned long arg0,
  18                                                        unsigned long arg1,
  19                                                        unsigned long arg2)
  20 {
  21         typeof(__cpu_soft_restart) *restart;
  22
  23         unsigned long el2_switch = !is_kernel_in_hyp_mode() &&
  24                 is_hyp_mode_available();
  25         restart = (void *)__pa_symbol(function_nocfi(__cpu_soft_restart));
  26
  27         cpu_install_idmap();
  28         restart(el2_switch, entry, arg0, arg1, arg2);
  29         unreachable();
  30 }
  31
  32 #endif