target/linux/adm5120/files/arch/mips/adm5120/reset.c

   1 /*
   2  *  $Id$
   3  *
   4  *  ADM5120 specific reset routines
   5  *
   6  *  Copyright (C) ADMtek Incorporated.
   7  *  Copyright (C) 2005 Jeroen Vreeken (pe1rxq@amsat.org)
   8  *  Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
   9  *  Copyright (C) 2007 OpenWrt.org
  10  *
  11  *  This program is free software; you can redistribute it and/or
  12  *  modify it under the terms of the GNU General Public License
  13  *  as published by the Free Software Foundation; either version 2
  14  *  of the License, or (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
  23  *  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  24  *  Boston, MA  02110-1301, USA.
  25  *
  26  */
  27
  28 #include <linux/types.h>
  29 #include <linux/kernel.h>
  30 #include <linux/init.h>
  31
  32 #include <linux/irq.h>
  33 #include <linux/io.h>
  34
  35 #include <asm/bootinfo.h>
  36 #include <asm/addrspace.h>
  37
  38 #include <adm5120_info.h>
  39 #include <adm5120_defs.h>
  40 #include <adm5120_switch.h>
  41
  42 void (*adm5120_board_reset)(void);
  43
  44 void adm5120_restart(char *command)
  45 {
  46         /* TODO: stop switch before reset */
  47
  48         if (adm5120_board_reset)
  49                 adm5120_board_reset();
  50
  51         SW_WRITE_REG(SOFT_RESET, 1);
  52 }
  53
  54 void adm5120_halt(void)
  55 {
  56         local_irq_disable();
  57
  58         printk(KERN_NOTICE "\n** You can safely turn off the power\n");
  59         while (1) {
  60                 if (cpu_wait)
  61                         cpu_wait();
  62         };
  63 }