--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kernel/eka/memmodel/epoc/moving/mmu.cpp	Thu Dec 17 09:24:54 2009 +0200
@@ -0,0 +1,97 @@
+// 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:
+// e32\memmodel\epoc\moving\mmu.cpp
+// 
+//
+
+#include "memmodel.h"
+
+/*******************************************************************************
+ * "Independent" MMU code
+ *******************************************************************************/
+
+void Mmu::Panic(TPanic aPanic)
+	{
+	Kern::Fault("MMU",aPanic);
+	}
+
+void Mmu::Init1()
+	{
+	__KTRACE_OPT2(KBOOT,KMMU,Kern::Printf("Mmu::Init1"));
+	__ASSERT_ALWAYS(TheRomHeader().iUserDataAddress==iDllDataBase+iMaxDllDataSize,Panic(ERomUserDataAddressInvalid));
+	__ASSERT_ALWAYS((TheRomHeader().iTotalUserDataSize&iPageMask)==0,Panic(ERomUserDataSizeInvalid));
+	__ASSERT_ALWAYS(::RomHeaderAddress==iRomLinearBase,Panic(ERomLinearAddressInvalid));
+	MmuBase::Init1();
+	}
+
+void Mmu::DoInit2()
+	{
+	__KTRACE_OPT2(KBOOT,KMMU,Kern::Printf("Mmu::DoInit2"));
+	MM::DllDataAllocator=TBitMapAllocator::New(iMaxDllDataSize>>iPageShift, ETrue);
+	__ASSERT_ALWAYS(MM::DllDataAllocator,Panic(EDllDataAllocatorCreateFailed));
+	TInt rom_dll_pages=TheRomHeader().iTotalUserDataSize>>iPageShift;
+	__KTRACE_OPT2(KBOOT,KMMU,Kern::Printf("DllDataAllocator @ %08x, %d ROM DLL Data Pages", MM::DllDataAllocator, rom_dll_pages));
+	if (rom_dll_pages)
+		MM::DllDataAllocator->Alloc(0, rom_dll_pages);	// low bit numbers represent high addresses
+	}
+
+//#ifndef __MMU_MACHINE_CODED__
+TInt Mmu::PageTableId(TLinAddr aAddr)
+	{
+	NKern::LockSystem();
+	TInt id = GetPageTableId(aAddr);
+	NKern::UnlockSystem();
+	return id;
+	}
+//#endif
+
+void Mmu::AssignPageTable(TInt aId, TInt aUsage, TAny* aObject, TLinAddr aAddr, TPde aPdePerm)
+	{
+	__KTRACE_OPT(KMMU,Kern::Printf("Mmu::AssignPageTable id=%d, u=%08x, obj=%08x, addr=%08x, perm=%08x",
+					aId, aUsage, aObject, aAddr, aPdePerm));
+	NKern::LockSystem();
+	SPageTableInfo& pti=PtInfo(aId);
+	switch (aUsage)
+		{
+//		case SPageTableInfo::EChunk:
+//			{
+//			DMemModelChunk* pC=(DMemModelChunk*)aObject;
+//			TUint32 ccp=K::CompressKHeapPtr(pC);
+//			TUint32 offset=(aAddr-TLinAddr(pC->iBase))>>iChunkShift;
+//			pti.SetChunk(ccp,offset);
+//			break;
+//			}
+//		case SPageTableInfo::EHwChunk:
+//			break;
+		case SPageTableInfo::EGlobal:
+			pti.SetGlobal(aAddr>>iChunkShift);
+			break;
+		default:
+			Panic(EAssignPageTableInvalidUsage);
+		}
+	DoAssignPageTable(aId, aAddr, aPdePerm);
+	NKern::UnlockSystem();
+	}
+
+TInt Mmu::UnassignPageTable(TLinAddr aAddr)
+	{
+	__KTRACE_OPT(KMMU,Kern::Printf("Mmu::UnassignPageTable addr=%08x", aAddr));
+	NKern::LockSystem();
+	TInt id=GetPageTableId(aAddr);
+	if (id>=0)
+		DoUnassignPageTable(aAddr);
+	NKern::UnlockSystem();
+	return id;
+	}
+