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

   1 /*
   2  *  arch/arm/mach-versatile/include/mach/system.h
   3  *
   4  *  Copyright (C) 2003 ARM Limited
   5  *  Copyright (C) 2000 Deep Blue Solutions Ltd
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21 #ifndef __ASM_ARCH_SYSTEM_H
  22 #define __ASM_ARCH_SYSTEM_H
  23
  24 #include <linux/io.h>
  25 #include <mach/hardware.h>
  26 #include <mach/platform.h>
  27
  28 static inline void arch_idle(void)
  29 {
  30         /*
  31          * This should do all the clock switching
  32          * and wait for interrupt tricks
  33          */
  34         cpu_do_idle();
  35 }
  36
  37 static inline void arch_reset(char mode)
  38 {
  39         u32 val;
  40
  41         val = __raw_readl(IO_ADDRESS(VERSATILE_SYS_RESETCTL)) & ~0x7;
  42         val |= 0x105;
  43
  44         __raw_writel(0xa05f, IO_ADDRESS(VERSATILE_SYS_LOCK));
  45         __raw_writel(val, IO_ADDRESS(VERSATILE_SYS_RESETCTL));
  46         __raw_writel(0, IO_ADDRESS(VERSATILE_SYS_LOCK));
  47 }
  48
  49 #endif