arch/tile/kernel/reboot.c

   1 /*
   2  * Copyright 2010 Tilera Corporation. All Rights Reserved.
   3  *
   4  *   This program is free software; you can redistribute it and/or
   5  *   modify it under the terms of the GNU General Public License
   6  *   as published by the Free Software Foundation, version 2.
   7  *
   8  *   This program is distributed in the hope that it will be useful, but
   9  *   WITHOUT ANY WARRANTY; without even the implied warranty of
  10  *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
  11  *   NON INFRINGEMENT.  See the GNU General Public License for
  12  *   more details.
  13  */
  14
  15 #include <linux/stddef.h>
  16 #include <linux/reboot.h>
  17 #include <linux/smp.h>
  18 #include <linux/pm.h>
  19 #include <linux/export.h>
  20 #include <asm/page.h>
  21 #include <asm/setup.h>
  22 #include <hv/hypervisor.h>
  23
  24 #ifndef CONFIG_SMP
  25 #define smp_send_stop()
  26 #endif
  27
  28 void machine_halt(void)
  29 {
  30         warn_early_printk();
  31         arch_local_irq_disable_all();
  32         smp_send_stop();
  33         hv_halt();
  34 }
  35
  36 void machine_power_off(void)
  37 {
  38         warn_early_printk();
  39         arch_local_irq_disable_all();
  40         smp_send_stop();
  41         hv_power_off();
  42 }
  43
  44 void machine_restart(char *cmd)
  45 {
  46         arch_local_irq_disable_all();
  47         smp_send_stop();
  48         hv_restart((HV_VirtAddr) "vmlinux", (HV_VirtAddr) cmd);
  49 }
  50
  51 /* No interesting distinction to be made here. */
  52 void (*pm_power_off)(void) = NULL;
  53 EXPORT_SYMBOL(pm_power_off);