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// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// e32\memmodel\epoc\moving\mmu.cpp
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//
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//
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#include "memmodel.h"
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/*******************************************************************************
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* "Independent" MMU code
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*******************************************************************************/
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void Mmu::Panic(TPanic aPanic)
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{
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Kern::Fault("MMU",aPanic);
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}
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void Mmu::Init1()
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{
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__KTRACE_OPT2(KBOOT,KMMU,Kern::Printf("Mmu::Init1"));
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__ASSERT_ALWAYS(TheRomHeader().iUserDataAddress==iDllDataBase+iMaxDllDataSize,Panic(ERomUserDataAddressInvalid));
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__ASSERT_ALWAYS((TheRomHeader().iTotalUserDataSize&iPageMask)==0,Panic(ERomUserDataSizeInvalid));
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__ASSERT_ALWAYS(::RomHeaderAddress==iRomLinearBase,Panic(ERomLinearAddressInvalid));
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MmuBase::Init1();
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}
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void Mmu::DoInit2()
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{
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__KTRACE_OPT2(KBOOT,KMMU,Kern::Printf("Mmu::DoInit2"));
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MM::DllDataAllocator=TBitMapAllocator::New(iMaxDllDataSize>>iPageShift, ETrue);
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__ASSERT_ALWAYS(MM::DllDataAllocator,Panic(EDllDataAllocatorCreateFailed));
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TInt rom_dll_pages=TheRomHeader().iTotalUserDataSize>>iPageShift;
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__KTRACE_OPT2(KBOOT,KMMU,Kern::Printf("DllDataAllocator @ %08x, %d ROM DLL Data Pages", MM::DllDataAllocator, rom_dll_pages));
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if (rom_dll_pages)
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MM::DllDataAllocator->Alloc(0, rom_dll_pages); // low bit numbers represent high addresses
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}
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//#ifndef __MMU_MACHINE_CODED__
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TInt Mmu::PageTableId(TLinAddr aAddr)
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{
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NKern::LockSystem();
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TInt id = GetPageTableId(aAddr);
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NKern::UnlockSystem();
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return id;
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}
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//#endif
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void Mmu::AssignPageTable(TInt aId, TInt aUsage, TAny* aObject, TLinAddr aAddr, TPde aPdePerm)
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{
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__KTRACE_OPT(KMMU,Kern::Printf("Mmu::AssignPageTable id=%d, u=%08x, obj=%08x, addr=%08x, perm=%08x",
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aId, aUsage, aObject, aAddr, aPdePerm));
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NKern::LockSystem();
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SPageTableInfo& pti=PtInfo(aId);
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switch (aUsage)
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{
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// case SPageTableInfo::EChunk:
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// {
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// DMemModelChunk* pC=(DMemModelChunk*)aObject;
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// TUint32 ccp=K::CompressKHeapPtr(pC);
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// TUint32 offset=(aAddr-TLinAddr(pC->iBase))>>iChunkShift;
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// pti.SetChunk(ccp,offset);
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// break;
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// }
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// case SPageTableInfo::EHwChunk:
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// break;
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case SPageTableInfo::EGlobal:
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pti.SetGlobal(aAddr>>iChunkShift);
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break;
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default:
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Panic(EAssignPageTableInvalidUsage);
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}
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DoAssignPageTable(aId, aAddr, aPdePerm);
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NKern::UnlockSystem();
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}
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TInt Mmu::UnassignPageTable(TLinAddr aAddr)
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{
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__KTRACE_OPT(KMMU,Kern::Printf("Mmu::UnassignPageTable addr=%08x", aAddr));
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NKern::LockSystem();
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TInt id=GetPageTableId(aAddr);
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if (id>=0)
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DoUnassignPageTable(aAddr);
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NKern::UnlockSystem();
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return id;
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}
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