sl@0: // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of the License "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // e32\nkernsmp\arm\nccpu.cpp
sl@0: // 
sl@0: //
sl@0: 
sl@0: #include <arm.h>
sl@0: #include <arm_gic.h>
sl@0: #include <arm_scu.h>
sl@0: #include <arm_tmr.h>
sl@0: 
sl@0: extern "C" {
sl@0: extern SVariantInterfaceBlock* VIB;
sl@0: }
sl@0: 
sl@0: struct SAPBootPage : public SFullArmRegSet
sl@0: 	{
sl@0: 	volatile T_UintPtr	iAPBootPtr[KMaxCpus];
sl@0: 	volatile T_UintPtr	iBootFlags;
sl@0: 	volatile T_UintPtr	iBootFlags2;
sl@0: 	volatile T_UintPtr	iBootFlags3;
sl@0: 	volatile T_UintPtr	iBootFlags4;
sl@0: 	volatile TUint64	iBPTimestamp;
sl@0: 	volatile TUint64	iAPTimestamp;
sl@0: 	};
sl@0: 
sl@0: extern "C" void _ApEntry();
sl@0: extern "C" void KickCpu(volatile T_UintPtr* aPtr, T_UintPtr aRegsPhys);
sl@0: extern void DumpFullRegSet(SFullArmRegSet& a);
sl@0: 
sl@0: TInt NKern::BootAP(volatile SAPBootInfo* aInfo)
sl@0: 	{
sl@0: 	volatile SArmAPBootInfo& a = *(volatile SArmAPBootInfo*)aInfo;
sl@0: 	__KTRACE_OPT(KBOOT,DEBUGPRINT("NKern::BootAP %d %08x+%x", a.iCpu, a.iInitStackBase, a.iInitStackSize));
sl@0: 
sl@0: 	T_UintPtr bp_phys = a.iAPBootPhys;
sl@0: 	T_UintPtr BootFlagsPhys = bp_phys + (T_UintPtr)_FOFF(SAPBootPage,iBootFlags);
sl@0: 	volatile SAPBootPage& bootPage = *(volatile SAPBootPage*)a.iAPBootLin;
sl@0: 	Arm::SaveState((SFullArmRegSet&)bootPage);
sl@0: 	NKern::EnableAllInterrupts();	// Arm::SaveState() disables interrupts
sl@0: 
sl@0: 	TLinAddr BootFlagsLin = (TLinAddr)&bootPage.iBootFlags;
sl@0: 	TLinAddr init_sp = a.iInitStackBase + a.iInitStackSize;
sl@0: 
sl@0: 	volatile T_UintPtr* pB = (volatile T_UintPtr*)BootFlagsLin;
sl@0: 	*pB = 0;
sl@0: 	pB[1] = 0;
sl@0: 	pB[2] = 0;
sl@0: 	pB[3] = 0;
sl@0: 
sl@0: 	__KTRACE_OPT(KBOOT,DEBUGPRINT("BootFlagsPhys=%08x BootFlagsLin=%08x RegsPhys=%08x RegsLin=%08x",
sl@0: 		BootFlagsPhys, BootFlagsLin, bp_phys, &bootPage));
sl@0: 	__KTRACE_OPT(KBOOT,DEBUGPRINT("SCU: iCtrl=%08x iConfig=%08x iCpuStat=%08x", SCU.iCtrl, SCU.iConfig, SCU.iCpuStatus));
sl@0: 
sl@0: 	bootPage.iN.iR13Abt		= a.iInitR13Abt;
sl@0: 	bootPage.iN.iR13Und		= a.iInitR13Und;
sl@0: 	bootPage.iN.iR13Irq		= a.iInitR13Irq;
sl@0: 	bootPage.iN.iR13Fiq		= a.iInitR13Fiq;
sl@0: 	bootPage.iN.iR13Svc		= init_sp;
sl@0: 	bootPage.iN.iFlags		= 0x1D3;
sl@0: 	bootPage.iN.iR1			= (TUint32)a.iAPBootPageDirPhys;
sl@0: 	bootPage.iN.iR2			= TUint32(a.iAPBootCodeLin) - TUint32(a.iAPBootCodePhys);
sl@0: 	bootPage.iN.iR3			= (TUint32)a.iAPBootLin;
sl@0: 	bootPage.iN.iR4			= (TUint32)aInfo;
sl@0: 	bootPage.iN.iR5			= BootFlagsPhys;
sl@0: 	bootPage.iN.iR6			= BootFlagsLin;
sl@0: 	bootPage.iN.iR7			= a.iInitStackSize;
sl@0: 	bootPage.iN.iR15		= (TLinAddr)&_ApEntry;
sl@0: 	bootPage.iB[0].iRWRWTID	= 0;
sl@0: 	bootPage.iB[0].iRWROTID	= 0;
sl@0: 	bootPage.iB[0].iRWNOTID	= 0;
sl@0: 
sl@0: 	__KTRACE_OPT(KBOOT,DumpFullRegSet((SFullArmRegSet&)bootPage));
sl@0: 
sl@0: 	arm_dsb();	// ensure writes to uncached memory visible
sl@0: 
sl@0: 	KickCpu(&bootPage.iAPBootPtr[a.iCpu], bp_phys);
sl@0: 
sl@0: 	TUint32 n = TUint32(VIB->iMaxCpuClock >> 3);
sl@0: 	n = -n;
sl@0: 	TUint32 b = 0;
sl@0: 	do	{
sl@0: 		++n;
sl@0: 		b = *pB;
sl@0: 		} while(b!=init_sp && n!=0);
sl@0: 	arm_dsb();
sl@0: 
sl@0: 	__KTRACE_OPT(KBOOT,DEBUGPRINT("BootFlag=%08x %08x %08x %08x n=%d", b, n, pB[1], pB[2], pB[3]));
sl@0: 	__KTRACE_OPT(KBOOT,DEBUGPRINT("SCU: iCtrl=%08x iConfig=%08x iCpuStat=%08x", SCU.iCtrl, SCU.iConfig, SCU.iCpuStatus));
sl@0: 	if (n==0)
sl@0: 		return KErrTimedOut;
sl@0: 	NKern::DisableAllInterrupts();
sl@0: 	arm_dsb();
sl@0: 	while (bootPage.iBootFlags2==0)
sl@0: 		{}
sl@0: 	arm_dsb();
sl@0: 	bootPage.iBootFlags2 = 2;
sl@0: 	arm_dsb();
sl@0: 	bootPage.iBPTimestamp = NKern::Timestamp();
sl@0: 	arm_dsb();
sl@0: 	while (bootPage.iBootFlags2==2)
sl@0: 		{}
sl@0: 	arm_dsb();
sl@0: 	NKern::EnableAllInterrupts();
sl@0: 	return KErrNone;
sl@0: 	}
sl@0: 
sl@0: void InitAPTimestamp(SNThreadCreateInfo& aInfo)
sl@0: 	{
sl@0: 	volatile SArmAPBootInfo& a = *(volatile SArmAPBootInfo*)aInfo.iParameterBlock;
sl@0: 	volatile SAPBootPage& bootPage = *(volatile SAPBootPage*)a.iAPBootLin;
sl@0: 	NKern::DisableAllInterrupts();
sl@0: 	bootPage.iBootFlags2 = 1;
sl@0: 	arm_dsb();
sl@0: 	while (bootPage.iBootFlags2==1)
sl@0: 		{}
sl@0: 	arm_dsb();
sl@0: 	bootPage.iAPTimestamp = NKern::Timestamp();
sl@0: 	arm_dsb();
sl@0: 	TUint64 bpt = bootPage.iBPTimestamp;
sl@0: 	TUint64 apt = bootPage.iAPTimestamp;
sl@0: 	TUint64 delta = bpt - apt;
sl@0: 	SubScheduler().iLastTimestamp64 += delta;
sl@0: 	__KTRACE_OPT(KBOOT,DEBUGPRINT("APT=0x%lx BPT=0x%lx Delta=0x%lx", apt, bpt, delta));
sl@0: 	arm_dsb();
sl@0: 	bootPage.iBootFlags2 = 3;
sl@0: 	NKern::EnableAllInterrupts();
sl@0: 	}
sl@0: