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36 lines
1.1 KiB
36 lines
1.1 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* MTD primitives for XIP support. Architecture specific functions |
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* |
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* Do not include this file directly. It's included from linux/mtd/xip.h |
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* |
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* Author: Nicolas Pitre |
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* Created: Nov 2, 2004 |
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* Copyright: (C) 2004 MontaVista Software, Inc. |
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*/ |
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#ifndef __ARCH_PXA_MTD_XIP_H__ |
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#define __ARCH_PXA_MTD_XIP_H__ |
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#include <mach/regs-ost.h> |
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/* restored July 2017, this did not build since 2011! */ |
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#define ICIP io_p2v(0x40d00000) |
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#define ICMR io_p2v(0x40d00004) |
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#define xip_irqpending() (readl(ICIP) & readl(ICMR)) |
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/* we sample OSCR and convert desired delta to usec (1/4 ~= 1000000/3686400) */ |
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#define xip_currtime() readl(OSCR) |
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#define xip_elapsed_since(x) (signed)((readl(OSCR) - (x)) / 4) |
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/* |
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* xip_cpu_idle() is used when waiting for a delay equal or larger than |
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* the system timer tick period. This should put the CPU into idle mode |
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* to save power and to be woken up only when some interrupts are pending. |
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* As above, this should not rely upon standard kernel code. |
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*/ |
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#define xip_cpu_idle() asm volatile ("mcr p14, 0, %0, c7, c0, 0" :: "r" (1)) |
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#endif /* __ARCH_PXA_MTD_XIP_H__ */
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