LXR linux/arch/arm/mach-at91/include/mach/system.h

   1/*
   2 * arch/arm/mach-at91/include/mach/system.h
   3 *
   4 *  Copyright (C) 2003 SAN People
   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 as published by
   8 * the Free Software Foundation; either version 2 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * This program is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program; if not, write to the Free Software
  18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 */
  20
  21#ifndef __ASM_ARCH_SYSTEM_H
  22#define __ASM_ARCH_SYSTEM_H
  23
  24#include <mach/hardware.h>
  25#include <mach/at91_st.h>
  26#include <mach/at91_dbgu.h>
  27
  28static inline void arch_idle(void)
  29{
  30        /*
  31         * Disable the processor clock.  The processor will be automatically
  32         * re-enabled by an interrupt or by a reset.
  33         */
  34//      at91_sys_write(AT91_PMC_SCDR, AT91_PMC_PCK);
  35
  36        /*
  37         * Set the processor (CP15) into 'Wait for Interrupt' mode.
  38         * Unlike disabling the processor clock via the PMC (above)
  39         *  this allows the processor to be woken via JTAG.
  40         */
  41        cpu_do_idle();
  42}
  43
  44void (*at91_arch_reset)(void);
  45
  46static inline void arch_reset(char mode, const char *cmd)
  47{
  48        /* call the CPU-specific reset function */
  49        if (at91_arch_reset)
  50                (at91_arch_reset)();
  51}
  52
  53#endif
  54