text: /*
   * MTD primitives for XIP support. Architecture specific functions
   *
   * Do not include this file directly. It's included from linux/mtd/xip.h
   * 
   * Author:	Nicolas Pitre
   * Created:	Nov 2, 2004
   * Copyright:	(C) 2004 MontaVista Software, Inc.
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   *
   * $Id: mtd-xip.h,v 1.1.1.1 2007-05-25 06:50:13 bruce Exp $
   */
  
  #ifndef __ARCH_PXA_MTD_XIP_H__
  #define __ARCH_PXA_MTD_XIP_H__
  
  #include <asm/arch/pxa-regs.h>
  
  #define xip_irqpending()	(ICIP & ICMR)
  
  /* we sample OSCR and convert desired delta to usec (1/4 ~= 1000000/3686400) */
  #define xip_currtime()		(OSCR)
  #define xip_elapsed_since(x)	(signed)((OSCR - (x)) / 4)
  
  /*
   * xip_cpu_idle() is used when waiting for a delay equal or larger than
   * the system timer tick period.  This should put the CPU into idle mode
   * to save power and to be woken up only when some interrupts are pending.
   * As above, this should not rely upon standard kernel code.
   */
  
  #define xip_cpu_idle()  asm volatile ("mcr p14, 0, %0, c7, c0, 0" :: "r" (1))
  
  #endif /* __ARCH_PXA_MTD_XIP_H__ */
  