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// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// e32\drivers\crashflash\crashflashnor.h
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//
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// WARNING: This file contains some APIs which are internal and are subject
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// to change without notice. Such APIs should therefore not be used
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// outside the Kernel and Hardware Services package.
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//
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#ifndef __CRASH_FLASH_NOR_H__
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#define __CRASH_FLASH_NOR_H__
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#ifndef EPOC32
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#include <crashflash.h>
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#include <kernel/kernel.h>
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/* @file
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@internalTechnology
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*/
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/* The generic crash flash nor support allows for a 32, 16, or 8 bit interface
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* to the nor flash chip. One of the following should be defined in the
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* variant's mmp file.
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*/
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#ifdef TCFI_4BYTE_WORD
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typedef TUint32 TCFIWord;
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#elif defined(TCFI_2BYTE_WORD)
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typedef TUint16 TCFIWord;
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#elif defined(TCFI_1BYTE_WORD)
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typedef TUint8 TCFIWord;
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#else
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#error One of TCFI_4BYTE_WORD, TCFI_2BYTE_WORD, or TCFI_1BYTE_WORD must be defined.
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#endif
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/**
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An implmentation of the CrashFlash interface for nor flash.
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@internalTechnology
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*/
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class CrashFlashNor : public CrashFlash
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{
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public:
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TInt Initialise();
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void StartTransaction();
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void EndTransaction();
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void Write(const TDesC8& aDes);
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void WriteSignature(const TDesC8& aDes);
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void Read(TDes8& aDes);
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void SetReadPos(TUint aPos);
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void SetWritePos(const TUint aPos);
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void EraseLogArea();
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TUint BytesWritten();
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void EraseFlashBlock(TUint aBlock);
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#ifdef _CRASHLOG_COMPR
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TUint GetOutputLimit();
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TUint GetLogOffset();
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#endif
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protected:
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/** @publishedPartner
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@released */
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virtual TInt VariantInitialise()=0;
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/** @publishedPartner
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@released */
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virtual void DoWrite(TCFIWord aWord)=0;
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/** @publishedPartner
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@released */
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virtual TCFIWord DoRead()=0;
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/** @publishedPartner
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@released */
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virtual void DoEraseBlock(TUint aBlock)=0;
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private:
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TCFIWord iWriteBuf;
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TCFIWord iReadBuf;
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TUint iWriteBufBytes;
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TUint iReadBufBytes;
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protected:
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/** @publishedPartner
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@released */
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TUint iEraseBlockSize;
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/** @publishedPartner
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@released */
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TUint iWritePos;
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/** @publishedPartner
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@released */
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TUint iReadPos;
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private:
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TUint iWriteTotal;
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};
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#endif
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#endif
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