/* * 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. */ #ifndef __ARCH_PXA_MTD_XIP_H__ #define __ARCH_PXA_MTD_XIP_H__ #include <mach/regs-ost.h> #include <mach/regs-intc.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__ */