--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/kernel/eka/memmodel/epoc/moving/mmu.cpp Mon Oct 19 15:55:17 2009 +0100
@@ -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;
+ }
+