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