sl@0: // Copyright (c) 1998-2009 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: // e32test\misc\strataflash.cpp
sl@0: // 
sl@0: //
sl@0: 
sl@0: #include <e32def.h>
sl@0: #include <e32def_private.h>
sl@0: #include "flash.h"
sl@0: 
sl@0: class StrataFlash : public Flash
sl@0: 	{
sl@0: public:
sl@0: 	virtual TInt Read(TUint32 anAddr, TUint32 aSize, TUint8* aDest);
sl@0: 	virtual TInt BlankCheck(TUint32 anAddr, TUint32 aSize);
sl@0: 	virtual TInt Erase(TUint32 anAddr, TUint32 aSize);
sl@0: 	virtual TInt Write(TUint32 anAddr, TUint32 aSize, const TUint8* aSrc);
sl@0: 	};
sl@0: 
sl@0: 
sl@0: Flash* Flash::New(TUint32 /*anAddr*/)
sl@0: 	{
sl@0: 	return new StrataFlash;
sl@0: 	}
sl@0: 
sl@0: TInt StrataFlash::Read(TUint32 anAddr, TUint32 aSize, TUint8* aDest)
sl@0: 	{
sl@0: 	Mem::Copy(aDest,(const TUint8*)anAddr,aSize);
sl@0: 	return KErrNone;
sl@0: 	}
sl@0: 
sl@0: TInt StrataFlash::BlankCheck(TUint32 anAddr, TUint32 aSize)
sl@0: 	{
sl@0: 	const TUint8* p=(const TUint8*)anAddr;
sl@0: 	const TUint8* pE=p+aSize;
sl@0: 	while(p<pE)
sl@0: 		{
sl@0: 		if (*p++!=0xff)
sl@0: 			return (TUint32)p-anAddr;
sl@0: 		}
sl@0: 	return 0;
sl@0: 	}
sl@0: 
sl@0: TInt StrataFlash::Erase(TUint32 anAddr, TUint32 aSize)
sl@0: 	{
sl@0: 	TUint32 base=anAddr&~0x1ffff;	// round base address down to block
sl@0: 	TUint32 end=anAddr+aSize;
sl@0: 	end=(end+0x1ffff)&~0x1ffff;	// round end address up to block
sl@0: 	TUint32 size=end-base;
sl@0: 	for (; size; size-=0x20000, base+=0x20000)
sl@0: 		{
sl@0: 		volatile TUint8* p=(volatile TUint8*)base;
sl@0: 		*p=0x20;		// block erase
sl@0: 		*p=0xd0;		// block erase confirm
sl@0: 		TUint s=0;
sl@0: 		while ((s&0x80)==0)
sl@0: 			s=*p;
sl@0: 		*p=0x50;		// clear status reg
sl@0: 		*p=0xff;		// read mode
sl@0: 		if (s&0x20)
sl@0: 			{
sl@0: 			// error
sl@0: 			return (TUint32)p-anAddr+1;
sl@0: 			}
sl@0: 		}
sl@0: 	return 0;
sl@0: 	}
sl@0: 
sl@0: TInt StrataFlash::Write(TUint32 anAddr, TUint32 aSize, const TUint8* aSrc)
sl@0: 	{
sl@0: 	volatile TUint8* p=(volatile TUint8*)anAddr;
sl@0: 	const TUint8* pE=aSrc+aSize;
sl@0: 	for (; aSrc<pE; aSrc++, p++)
sl@0: 		{
sl@0: 		*p=0x40;		// byte write
sl@0: 		*p=*aSrc;		// write data
sl@0: 		TUint s=0;
sl@0: 		while ((s&0x80)==0)
sl@0: 			s=*p;
sl@0: 		*p=0x50;		// clear status reg
sl@0: 		*p=0xff;		// read mode
sl@0: 		if (s&0x10)
sl@0: 			{
sl@0: 			// error
sl@0: 			return (TUint32)p-anAddr+1;
sl@0: 			}
sl@0: 		}
sl@0: 	return 0;
sl@0: 	}
sl@0: 
sl@0: