include/asm-arm/arch-rpc/system.h

   1 /*
   2  *  linux/include/asm-arm/arch-rpc/system.h
   3  *
   4  *  Copyright (C) 1996-1999 Russell King.
   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 #include <asm/arch/hardware.h>
  11 #include <asm/hardware/iomd.h>
  12 #include <asm/io.h>
  13
  14 static void arch_idle(void)
  15 {
  16         unsigned long start_idle;
  17
  18         start_idle = jiffies;
  19
  20         do {
  21                 if (current->need_resched || hlt_counter)
  22                         goto slow_out;
  23                 cpu_do_idle(IDLE_WAIT_FAST);
  24         } while (time_before(jiffies, start_idle + HZ/50));
  25
  26         cpu_do_idle(IDLE_CLOCK_SLOW);
  27
  28         while (!current->need_resched && !hlt_counter) {
  29                 cpu_do_idle(IDLE_WAIT_SLOW);
  30         }
  31
  32         cpu_do_idle(IDLE_CLOCK_FAST);
  33 slow_out:
  34 }
  35
  36 static inline void arch_reset(char mode)
  37 {
  38         iomd_writeb(0, IOMD_ROMCR0);
  39
  40         /*
  41          * Jump into the ROM
  42          */
  43         cpu_reset(0);
  44 }