release/src-rt-6.x/linux/linux-2.6/include/asm-arm/arch-realview/system.h

   1 /*
   2  *  linux/include/asm-arm/arch-realview/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 <asm/hardware.h>
  25 #include <asm/io.h>
  26 #include <asm/arch/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         void __iomem *hdr_ctrl = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_RESETCTL_OFFSET;
  40         unsigned int val;
  41
  42         /*
  43          * To reset, we hit the on-board reset register
  44          * in the system FPGA
  45          */
  46         val = __raw_readl(hdr_ctrl);
  47         val |= REALVIEW_SYS_CTRL_RESET_CONFIGCLR;
  48         __raw_writel(val, hdr_ctrl);
  49 }
  50
  51 #endif