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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* 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.
*/
#ifndef __ARCH_PXA_MTD_XIP_H__
#define __ARCH_PXA_MTD_XIP_H__
#include <mach/regs-ost.h>
/* restored July 2017, this did not build since 2011! */
#define ICIP io_p2v(0x40d00000)
#define ICMR io_p2v(0x40d00004)
#define xip_irqpending() (readl(ICIP) & readl(ICMR))
/* we sample OSCR and convert desired delta to usec (1/4 ~= 1000000/3686400) */
#define xip_currtime() readl(OSCR)
#define xip_elapsed_since(x) (signed)((readl(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__ */