arch/arm/mach-ixp4xx/include/mach/system.h

   1 /*
   2  * arch/arm/mach-ixp4xx/include/mach/system.h
   3  *
   4  * Copyright (C) 2002 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  */
  11
  12 #include <mach/hardware.h>
  13
  14 static inline void arch_idle(void)
  15 {
  16         /* ixp4xx does not implement the XScale PWRMODE register,
  17          * so it must not call cpu_do_idle() here.
  18          */
  19 #if 0
  20         cpu_do_idle();
  21 #endif
  22 }
  23
  24
  25 static inline void arch_reset(char mode, const char *cmd)
  26 {
  27         if ( 1 && mode == 's') {
  28                 /* Jump into ROM at address 0 */
  29                 cpu_reset(0);
  30         } else {
  31                 /* Use on-chip reset capability */
  32
  33                 /* set the "key" register to enable access to
  34                  * "timer" and "enable" registers
  35                  */
  36                 *IXP4XX_OSWK = IXP4XX_WDT_KEY;
  37
  38                 /* write 0 to the timer register for an immediate reset */
  39                 *IXP4XX_OSWT = 0;
  40
  41                 *IXP4XX_OSWE = IXP4XX_WDT_RESET_ENABLE | IXP4XX_WDT_COUNT_ENABLE;
  42         }
  43 }
  44