We need a way to pass flags to rombuilds in Raptor via extension flm interfaces, so that the CPP pass
of the rom input files can be informed what toolchain we are building with and conditionally
include or exclude files depending on whether the toolchain could build them.
// Copyright (c) 1994-2009 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\direct\arm\xutils.cpp
//
//
//#define __DBG_MON_FAULT__
//#define __RAM_LOADED_CODE__
//#define __EARLY_DEBUG__
#include "arm_mem.h"
/**
@pre Call in a thread context.
@pre Interrupts must be enabled.
@pre Kernel must be unlocked.
*/
EXPORT_C TPhysAddr Epoc::LinearToPhysical(TLinAddr aLinAddr)
{
CHECK_PRECONDITIONS(MASK_KERNEL_UNLOCKED|MASK_INTERRUPTS_ENABLED|MASK_NOT_ISR|MASK_NOT_IDFC,"Epoc::LinearToPhysical");
__KTRACE_OPT(KMMU,Kern::Printf("Epoc::LinearToPhysical(%08x)", aLinAddr));
#ifdef __CPU_HAS_MMU
// Deal with faking no MMU on hardware with an MMU
if (!Arm::MmuActive())
return aLinAddr;
TUint32 phys=0xffffffffu;
TUint32 pdphys = Arm::MmuTTBR0();
TUint32 pdlin = TheSuperPage().iPageDir;
TUint32 offset = pdlin - pdphys; // offset from phys to lin for page directory/tables
const TUint32* pageDir = (const TUint32*)pdlin;
TUint32 pde = pageDir[aLinAddr>>20];
__KTRACE_OPT(KMMU,Kern::Printf("PDE %08x", pde));
if ((pde&3)==2)
{
// section
phys = (pde&0xfff00000u) | (aLinAddr&0x000fffffu);
}
else if ((pde&3)==1)
{
// page table
TUint32 ptphys = pde & 0xfffffc00u;
const TUint32* pageTable = (const TUint32*)(ptphys + offset);
TUint32 pte = pageTable[(aLinAddr>>12)&0xff];
__KTRACE_OPT(KMMU,Kern::Printf("PTE %08x", pte));
if ((pte&3)==1)
{
// 64K page
phys = (pte&0xffff0000u) | (aLinAddr&0x0000ffffu);
}
else if (pte&3)
{
// 4K page
phys = (pte&0xfffff000u) | (aLinAddr&0x00000fffu);
}
else
{
FAULT();
}
}
else
{
FAULT();
}
__KTRACE_OPT(KMMU,Kern::Printf("Physical address = %08x",phys));
return phys;
#else
// real non-MMU hardware
return aLinAddr;
#endif
}