release/src-rt-6.x.4708/linux/linux-2.6.36/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 <asm/page.h>
  20 #include <asm/setup.h>
  21 #include <hv/hypervisor.h>
  22
  23 #ifndef CONFIG_SMP
  24 #define smp_send_stop()
  25 #endif
  26
  27 void machine_halt(void)
  28 {
  29         warn_early_printk();
  30         raw_local_irq_disable_all();
  31         smp_send_stop();
  32         hv_halt();
  33 }
  34
  35 void machine_power_off(void)
  36 {
  37         warn_early_printk();
  38         raw_local_irq_disable_all();
  39         smp_send_stop();
  40         hv_power_off();
  41 }
  42
  43 void machine_restart(char *cmd)
  44 {
  45         raw_local_irq_disable_all();
  46         smp_send_stop();
  47         hv_restart((HV_VirtAddr) "vmlinux", (HV_VirtAddr) cmd);
  48 }
  49
  50 /* No interesting distinction to be made here. */
  51 void (*pm_power_off)(void) = NULL;