cf6c0895e2
Updated the permissions of sources files[c/h] in src and misc folder to 644. Signed-off-by: Krishna Chaitanya <kpataka@xilinx.com> Acked-by: Anirudha Sarangi <anirudh@xilinx.com>
144 lines
4.4 KiB
C
144 lines
4.4 KiB
C
/******************************************************************************
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*
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* Copyright (C) 2012 - 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 nor.c
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*
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* Contains code for the NOR FLASH functionality.
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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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* 1.00a ecm 01/10/10 Initial release
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* 2.00a mb 25/05/12 mio init removed
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* 3.00a sgd 30/01/13 Code cleanup
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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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******************************************************************************/
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/***************************** Include Files *********************************/
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#include "fsbl.h"
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#include "nor.h"
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#include "xstatus.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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/************************** Variable Definitions *****************************/
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extern u32 FlashReadBaseAddress;
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/******************************************************************************/
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/******************************************************************************/
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/**
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*
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* This function initializes the controller for the NOR FLASH interface.
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*
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* @param None
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*
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* @return None
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*
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* @note None.
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*
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****************************************************************************/
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void InitNor(void)
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{
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/*
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* Set up the base address for access
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*/
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FlashReadBaseAddress = XPS_NOR_BASEADDR;
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}
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/******************************************************************************/
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/**
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*
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* This function provides the NOR FLASH interface for the Simplified header
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* functionality.
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*
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* @param SourceAddress is address in FLASH data space
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* @param DestinationAddress is address in OCM data space
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* @param LengthBytes is the data length to transfer in bytes
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*
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* @return
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* - XST_SUCCESS if the write completes correctly
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* - XST_FAILURE if the write fails to completes correctly
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*
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* @note None.
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*
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****************************************************************************/
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u32 NorAccess(u32 SourceAddress, u32 DestinationAddress, u32 LengthBytes)
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{
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u32 Data;
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u32 Count;
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u32 *SourceAddr;
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u32 *DestAddr;
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u32 LengthWords;
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/*
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* check for non-word tail
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* add bytes to cover the end
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*/
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if ((LengthBytes%4) != 0){
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LengthBytes += (4 - (LengthBytes & 0x00000003));
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}
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LengthWords = LengthBytes >> WORD_LENGTH_SHIFT;
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SourceAddr = (u32 *)(SourceAddress + FlashReadBaseAddress);
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DestAddr = (u32 *)(DestinationAddress);
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/*
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* Word transfers, endianism isn't an issue
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*/
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for (Count=0; Count < LengthWords; Count++){
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Data = Xil_In32((u32)(SourceAddr++));
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Xil_Out32((u32)(DestAddr++), Data);
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}
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return XST_SUCCESS;
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}
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