2dee01e56d
This patch updates the standalone files copyright information with the latest content. Signed-off-by: Venkata Naga Sai Krishna Kolapalli <venkatan@xilinx.com>
103 lines
3.3 KiB
C
Executable file
103 lines
3.3 KiB
C
Executable file
/******************************************************************************
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*
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* Copyright (C) 2014 Xilinx, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* Use of the Software is limited solely to applications:
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* (a) running on a Xilinx device, or
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* (b) that interact with a Xilinx device through a bus or interconnect.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* XILINX CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of the Xilinx shall not be used
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* in advertising or otherwise to promote the sale, use or other dealings in
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* this Software without prior written authorization from Xilinx.
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*
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******************************************************************************/
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/*****************************************************************************/
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/**
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*
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* @file microblaze_sleep.c
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*
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* Contains implementation of microblaze sleep function.
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*
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* <pre>
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* MODIFICATION HISTORY:
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*
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* Ver Who Date Changes
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* ----- ---- -------- -------------------------------------------------------
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* 4.1 hk 04/18/14 Add sleep function.
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*
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* </pre>
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*
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* @note
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*
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* This file may contain architecture-dependent code.
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*
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******************************************************************************/
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/***************************** Include Files *********************************/
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#include "microblaze_sleep.h"
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/************************** Constant Definitions *****************************/
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/**************************** Type Definitions *******************************/
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/***************** Macros (Inline Functions) Definitions *********************/
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/************************** Function Prototypes ******************************/
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/*****************************************************************************/
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/**
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*
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* Provides delay for requested duration.
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*
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* @param Delay time in milliseconds.
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*
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* @return None.
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*
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* @note Instruction cache should be enabled for this to work.
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*
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******************************************************************************/
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void MB_Sleep(u32 MilliSeconds)
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{
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if (((mfmsr() & 0x20U) == 0U)) {
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/*
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* Instruction cache not enabled.
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* Delay will be much higher than expected.
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*/
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}
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asm volatile ("\n"
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"1: \n\t"
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"addik r7, r0, %0 \n\t"
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"2: \n\t"
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"addik r7, r7, -1 \n\t"
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"bneid r7, 2b \n\t"
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"or r0, r0, r0 \n\t"
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"bneid %1, 1b \n\t"
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"addik %1, %1, -1 \n\t"
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:: "i"(ITERS_PER_MSEC), "d" (MilliSeconds));
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}
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