kerneltest/e32test/misc/strataflash.cpp
changeset 0 a41df078684a
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kerneltest/e32test/misc/strataflash.cpp	Mon Oct 19 15:55:17 2009 +0100
@@ -0,0 +1,102 @@
+// Copyright (c) 1998-2009 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:
+// e32test\misc\strataflash.cpp
+// 
+//
+
+#include <e32def.h>
+#include <e32def_private.h>
+#include "flash.h"
+
+class StrataFlash : public Flash
+	{
+public:
+	virtual TInt Read(TUint32 anAddr, TUint32 aSize, TUint8* aDest);
+	virtual TInt BlankCheck(TUint32 anAddr, TUint32 aSize);
+	virtual TInt Erase(TUint32 anAddr, TUint32 aSize);
+	virtual TInt Write(TUint32 anAddr, TUint32 aSize, const TUint8* aSrc);
+	};
+
+
+Flash* Flash::New(TUint32 /*anAddr*/)
+	{
+	return new StrataFlash;
+	}
+
+TInt StrataFlash::Read(TUint32 anAddr, TUint32 aSize, TUint8* aDest)
+	{
+	Mem::Copy(aDest,(const TUint8*)anAddr,aSize);
+	return KErrNone;
+	}
+
+TInt StrataFlash::BlankCheck(TUint32 anAddr, TUint32 aSize)
+	{
+	const TUint8* p=(const TUint8*)anAddr;
+	const TUint8* pE=p+aSize;
+	while(p<pE)
+		{
+		if (*p++!=0xff)
+			return (TUint32)p-anAddr;
+		}
+	return 0;
+	}
+
+TInt StrataFlash::Erase(TUint32 anAddr, TUint32 aSize)
+	{
+	TUint32 base=anAddr&~0x1ffff;	// round base address down to block
+	TUint32 end=anAddr+aSize;
+	end=(end+0x1ffff)&~0x1ffff;	// round end address up to block
+	TUint32 size=end-base;
+	for (; size; size-=0x20000, base+=0x20000)
+		{
+		volatile TUint8* p=(volatile TUint8*)base;
+		*p=0x20;		// block erase
+		*p=0xd0;		// block erase confirm
+		TUint s=0;
+		while ((s&0x80)==0)
+			s=*p;
+		*p=0x50;		// clear status reg
+		*p=0xff;		// read mode
+		if (s&0x20)
+			{
+			// error
+			return (TUint32)p-anAddr+1;
+			}
+		}
+	return 0;
+	}
+
+TInt StrataFlash::Write(TUint32 anAddr, TUint32 aSize, const TUint8* aSrc)
+	{
+	volatile TUint8* p=(volatile TUint8*)anAddr;
+	const TUint8* pE=aSrc+aSize;
+	for (; aSrc<pE; aSrc++, p++)
+		{
+		*p=0x40;		// byte write
+		*p=*aSrc;		// write data
+		TUint s=0;
+		while ((s&0x80)==0)
+			s=*p;
+		*p=0x50;		// clear status reg
+		*p=0xff;		// read mode
+		if (s&0x10)
+			{
+			// error
+			return (TUint32)p-anAddr+1;
+			}
+		}
+	return 0;
+	}
+
+