target/linux/ifxmips/files/arch/mips/ifxmips/reset.c

   1 /*
   2  *   arch/mips/ifxmips/prom.c
   3  *
   4  *   This program is free software; you can redistribute it and/or modify
   5  *   it under the terms of the GNU General Public License as published by
   6  *   the Free Software Foundation; either version 2 of the License, or
   7  *   (at your option) any later version.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program; if not, write to the Free Software
  16  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  17  *
  18  *   Copyright (C) 2005 infineon
  19  *
  20  *   Rewrite of Infineon IFXMips code, thanks to infineon for the support,
  21  *   software and hardware
  22  *
  23  *   Copyright (C) 2007 John Crispin <blogic@openwrt.org>
  24  *
  25  */
  26
  27 #include <linux/kernel.h>
  28 #include <linux/pm.h>
  29 #include <asm/reboot.h>
  30 #include <asm/system.h>
  31 #include <asm/io.h>
  32 #include <asm/ifxmips/ifxmips.h>
  33
  34 static void
  35 ifxmips_machine_restart (char *command)
  36 {
  37         printk (KERN_NOTICE "System restart\n");
  38         local_irq_disable ();
  39
  40         writel(readl(IFXMIPS_RCU_REQ) | IFXMIPS_RST_ALL, IFXMIPS_RCU_REQ);
  41         for (;;);
  42 }
  43
  44 static void
  45 ifxmips_machine_halt (void)
  46 {
  47         printk (KERN_NOTICE "System halted.\n");
  48         local_irq_disable ();
  49         for (;;);
  50 }
  51
  52 static void
  53 ifxmips_machine_power_off (void)
  54 {
  55         printk (KERN_NOTICE "Please turn off the power now.\n");
  56         local_irq_disable ();
  57         for (;;);
  58 }
  59
  60 void
  61 ifxmips_reboot_setup (void)
  62 {
  63         _machine_restart = ifxmips_machine_restart;
  64         _machine_halt = ifxmips_machine_halt;
  65         pm_power_off = ifxmips_machine_power_off;
  66 }