// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).

 // All rights reserved.

 // This component and the accompanying materials are made available

 // under the terms of the License "Eclipse Public License v1.0"

 // which accompanies this distribution, and is available

 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

 //

 // Initial Contributors:

 // Nokia Corporation - initial contribution.

 //

 // Contributors:

 //

 // Description:

 // e32\drivers\crashflash\crashflashnor.h

 // 

 // WARNING: This file contains some APIs which are internal and are subject

 //          to change without notice. Such APIs should therefore not be used

 //          outside the Kernel and Hardware Services package.

 //

 #ifndef __CRASH_FLASH_NOR_H__

 #define __CRASH_FLASH_NOR_H__

 #ifndef EPOC32

 #include <crashflash.h>

 #include <kernel/kernel.h>

 /* @file

 @internalTechnology

 */

 /* The generic crash flash nor support allows for a 32, 16, or 8 bit interface

  * to the nor flash chip.  One of the following should be defined in the

  * variant's mmp file.

  */

 #ifdef TCFI_4BYTE_WORD

 typedef TUint32 TCFIWord;

 #elif defined(TCFI_2BYTE_WORD)

 typedef TUint16 TCFIWord;

 #elif defined(TCFI_1BYTE_WORD)

 typedef TUint8 TCFIWord;

 #else

 #error One of TCFI_4BYTE_WORD, TCFI_2BYTE_WORD, or TCFI_1BYTE_WORD must be defined.

 #endif

 /** 

 An implmentation of the CrashFlash interface for nor flash.

 @internalTechnology

 */

 class CrashFlashNor : public CrashFlash

 	{

 public:

 	TInt Initialise();

 	void StartTransaction();

 	void EndTransaction();

 	void Write(const TDesC8& aDes);

 	void WriteSignature(const TDesC8& aDes);

 	void Read(TDes8& aDes);

 	void SetReadPos(TUint aPos);

 	void SetWritePos(const TUint aPos);

 	void EraseLogArea();

 	TUint BytesWritten();

 	void EraseFlashBlock(TUint aBlock);

 #ifdef _CRASHLOG_COMPR	

 	TUint GetOutputLimit();

 	TUint GetLogOffset();

 #endif

 protected:

 	/** @publishedPartner

 	@released */

 	virtual TInt VariantInitialise()=0;

 	/** @publishedPartner

 	@released */

 	virtual void DoWrite(TCFIWord aWord)=0;

 	/** @publishedPartner

 	@released */

 	virtual TCFIWord DoRead()=0;

 	/** @publishedPartner

 	@released */

 	virtual void DoEraseBlock(TUint aBlock)=0;

 private:

 	TCFIWord iWriteBuf;

 	TCFIWord iReadBuf;

 	TUint iWriteBufBytes;

 	TUint iReadBufBytes;

 protected:

 	/** @publishedPartner

 	@released */

 	TUint iEraseBlockSize;

 	/** @publishedPartner

 	@released */

 	TUint iWritePos;

 	/** @publishedPartner

 	@released */

 	TUint iReadPos;

 private:

 	TUint iWriteTotal;

 	};

 #endif

 #endif