diff -r 820b22e13ff1 -r 39c28ec933dd imgtools/imglib/filesystem/source/fat16bootsector.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imgtools/imglib/filesystem/source/fat16bootsector.cpp	Mon May 10 19:54:49 2010 +0100
@@ -0,0 +1,152 @@
+/*
+* Copyright (c) 2006-2009 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: 
+* This class represents the boot sector of a FAT16 image. 
+* This class is derived from basebootsector class which is constitutes 
+* the common boot sector fields for FAT16 and FAT32 class. 	
+* @internalComponent
+* @released
+*
+*/
+
+#include "fat16bootsector.h"
+#include <cstring>
+
+/**
+Constructor of the fat16 boot sector class
+
+@internalComponent
+@released
+*/
+TFAT16BootSector::TFAT16BootSector()
+{
+}
+
+/**
+Destructor of the fat16 boot sector class
+
+@internalComponent
+@released
+*/
+TFAT16BootSector::~TFAT16BootSector()
+{
+}
+
+/**
+Set the file system type
+
+@internalComponent
+@released
+*/
+void TFAT16BootSector::SetFileSysType()
+{
+	strcpy(reinterpret_cast<char*>(iFileSysType),"FAT16   ");
+}	
+/**
+returns the file system type
+@return file system type 
+
+@internalComponent
+@released
+*/
+unsigned char* TFAT16BootSector::FileSysType()
+{
+	return iFileSysType;
+}
+
+/**
+Number of entries allowed in the root directory,specific to Fat12/16,
+zero for FAT32
+
+@internalComponent
+@released
+*/
+void TFAT16BootSector::SetRootDirEntries()
+{
+	iRootDirEntries = KDefaultRootDirEntries;;		
+}
+
+/**
+Sets the number of reserved sectors on the volume
+
+@internalComponent
+@released
+*/
+void TFAT16BootSector::SetReservedSectors()
+{
+	iReservedSectors = KDefaultFat16ReservedSectors;
+}
+
+/**
+Computes the sectors per cluster ratio
+To refer this mathematical computation, Please see:
+Microsoft Extensible Firmware Initiative FAT32 File 
+System Specification document
+
+@internalComponent
+@released
+
+@param aPartitionSize partition size in bytes
+*/
+void TFAT16BootSector::ComputeSectorsPerCluster(Long64 aPartitionSize)
+{
+	
+	if(aPartitionSize > K1GB)
+	{
+		iSectorsPerCluster = K64SectorsPerCluster;
+	}
+	else if(aPartitionSize > K512MB)
+	{
+		iSectorsPerCluster = K32SectorsPerCluster;
+	}
+	else if(aPartitionSize > K256MB)
+	{
+		iSectorsPerCluster = K16SectorsPerCluster;
+	}
+	else if(aPartitionSize > K128MB)
+	{
+		iSectorsPerCluster = K8SectorsPerCluster;
+	}
+	else if(aPartitionSize > K16MB)
+	{
+		iSectorsPerCluster = K4SectorsPerCluster;
+	}
+	else 
+	{
+		iSectorsPerCluster = K2SectorsPerCluster;
+	}
+}
+
+/**
+Sectors used for the Fat table
+To refer this mathematical formulae, Please see:
+Microsoft Extensible Firmware Initiative FAT32 File System Specification 
+document
+
+@internalComponent
+@released
+
+@param aPartitionSize partition size
+*/
+void TFAT16BootSector::ComputeFatSectors(Long64 aPartitionSize)
+{
+	int iRootDirSectors = ((iRootDirEntries * 32) + (iBytesPerSector - 1)) / iBytesPerSector;
+	int Log2OfBytesPerSector = Log2(iBytesPerSector);
+	unsigned long TotalSectors64 = (unsigned long)(aPartitionSize >> Log2OfBytesPerSector);
+	unsigned int tmpval1 = TotalSectors64 - (iReservedSectors + iRootDirSectors);
+	unsigned int tmpval2 =(256 * iSectorsPerCluster) + iNumberOfFats;
+	unsigned int FatSectors =(tmpval1 + (tmpval2 - 1)) / tmpval2;
+	iFatSectors = (unsigned short)FatSectors;	
+	iFatSectors32 = 0;
+}