forked from Minki/linux
d2912cb15b
Based on 2 normalized pattern(s): 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 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 # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
/* 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__ */
|