release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/pnx833x/common/reset.c

   1 /*
   2  *  reset.c: reset support for PNX833X.
   3  *
   4  *  Copyright 2008 NXP Semiconductors
   5  *        Chris Steel <chris.steel@nxp.com>
   6  *    Daniel Laird <daniel.j.laird@nxp.com>
   7  *
   8  *  Based on software written by:
   9  *      Nikita Youshchenko <yoush@debian.org>, based on PNX8550 code.
  10  *
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of the GNU General Public License as published by
  13  *  the Free Software Foundation; either version 2 of the License, or
  14  *  (at your option) any later version.
  15  *
  16  *  This program is distributed in the hope that it will be useful,
  17  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  *  GNU General Public License for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License
  22  *  along with this program; if not, write to the Free Software
  23  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24  */
  25 #include <linux/reboot.h>
  26 #include <pnx833x.h>
  27
  28 void pnx833x_machine_restart(char *command)
  29 {
  30         PNX833X_RESET_CONTROL_2 = 0;
  31         PNX833X_RESET_CONTROL = 0;
  32 }
  33
  34 void pnx833x_machine_halt(void)
  35 {
  36         while (1)
  37                 __asm__ __volatile__ ("wait");
  38
  39 }
  40
  41 void pnx833x_machine_power_off(void)
  42 {
  43         pnx833x_machine_halt();
  44 }