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
  28 static 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
  44 void (*at91_arch_reset)(void);
  45
  46 static 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