// 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:

// omap3530/assp/src/assp.cpp

//

#include <kernel.h>

#include <assp/omap3530_assp/omap3530_assp_priv.h>

#include <assp/omap3530_assp/omap3530_timer.h>

#include <assp/omap3530_assp/omap3530_prcm.h>

#include <assp/omap3530_assp/omap3530_irqmap.h>

#include <assp/omap3530_assp/omap3530_hardware_base.h>

#include <assp/omap3530_assp/omap3530_uart.h>

#include <assp/omap3530_shared/omap3_mstick.h>

#define PS_PER_SECOND 1000000000000

#define US_PER_SECOND 1000000

Omap3530Assp* Omap3530Assp::Variant;

DECLARE_STANDARD_ASSP()

EXPORT_C Omap3530Assp::Omap3530Assp()

	{

	Kern::Printf("%s::%s",__FUNCTION__,__FUNCTION__);

	}

EXPORT_C TMachineStartupType Omap3530Assp::StartupReason()

	{

	__KTRACE_OPT(KBOOT,Kern::Printf("Omap3530Assp::StartupReason"));

#ifdef _DEBUG															// REMOVE THIS

	TUint s = Kern::SuperPage().iHwStartupReason;

	__KTRACE_OPT(KBOOT,Kern::Printf("CPU page value %08x", s));

#endif																	// REMOVE THIS

	//

	// TO DO: (mandatory)

	//

	// Map the startup reason read from the Super Page to one of TMachineStartupType enumerated values

	// and return this

	//

	return EStartupCold;   // EXAMPLE ONLY

	}

EXPORT_C void Omap3530Assp::Init1()

	{

	__KTRACE_OPT(KBOOT,Kern::Printf("Omap3530Assp::Init1()"));

	Variant = (Omap3530Assp*)Arch::TheAsic();

	__ASSERT_ALWAYS( Variant != NULL, Kern::Fault( "assp Init1: no variant", 0 ) );

	Omap3530Interrupt::Init1();			// initialise the ASSP interrupt controller

	__KTRACE_OPT(KBOOT,Kern::Printf("Omap3530Assp::Init1() OUT"));

	}

EXPORT_C TUint64  Omap3530Assp::GetXtalFrequency()

	{

	return Prcm::ClockFrequency( Prcm::EClkSysClk );

	}

EXPORT_C void Omap3530Assp::Init3()

	{

	__KTRACE_OPT(KBOOT,Kern::Printf("Omap3530Assp::Init3() >"));

	Prcm::Init3();

	TArmCpuId id={0};

	ArmCpuVersionId(id);

	Omap3530Assp::NanoWaitCalibration();

	TUint64 hz = Prcm::ClockFrequency( Prcm::EClkMpu );

	Kern::Printf("CPU at %d MHz",(TInt)hz/1000000);

	Kern::SetNanoWaitHandler(NanoWait);

	Omap3::MsTick::Start();

	__KTRACE_OPT(KBOOT,Kern::Printf("Omap3530Assp::Init3() <"));

	}

/*

 * Returns the number of microseconds for the system millisecond tick;

 * */

EXPORT_C TInt Omap3530Assp::MsTickPeriod()

	{

	return 1000; 

	}

EXPORT_C TUint32 Omap3530Assp::NanoWaitCalibration()

	{

	// Return the minimum time in nano-seconds that it takes to execute the following code:

	//	 nanowait_loop:

	//	 		  subs r0, r0, r1

	//	 		  bhi nanowait_loop

	//THE cpu frequency can change so this calibration must be achieved each time the power management modifies the cpu freq.

	TInt cycles_ns =  Prcm::ClockFrequency( Prcm::EClkMpu ) /1000000000 ;

	return 2 * cycles_ns;  // 2 cycles approx 3.333ns at 600MHz

	}

EXPORT_C void Omap3530Assp::ArmCpuVersionId(TArmCpuId &id)

//

// Read and return the the CPU ID

//

	{

		TUint armString = Kern::SuperPage().iCpuId; 

		id.Implementor    = (armString & 0xFF000000) >>24;	

		id.Variant	  = (armString &     0x00F00000)  >>20;

		id.Architecture = (armString &   0x000F0000)  >>16; 		

		id.Primary	  = (armString &     0x0000FFF0)>> 4; 			

		id.Revision	  = (armString &     0x0000000F);

		Kern::Printf("%s  %s  Rev:%d",__FUNCTION__,(id.Primary ==0xc08)?"CORTEX_A8":"UNKNOWN",id.Revision);	

	}

EXPORT_C Omap3530Uart::TUartNumber Omap3530Assp::DebugPortNumber()

//

// Return index of the debug UART Omap3530Uart::EUart([0-2]|None)

//

	{

	Omap3530Uart::TUartNumber debugPort;

	switch (Kern::SuperPage().iDebugPort)

		{

		case 0:

			debugPort = Omap3530Uart::EUart0;

			break;

		case 1:

			debugPort = Omap3530Uart::EUart1;

			break;

		case 2:

			debugPort = Omap3530Uart::EUart2;

			break;

		default:

			debugPort = Omap3530Uart::EUartNone;

			break;

		}

	return debugPort;

	}

EXPORT_C TUint Omap3530Assp::ProcessorPeriodInPs()

//

// Return CPU clock period in picoseconds

//

	{

	TUint64 cycleTime =  (Prcm::ClockFrequency( Prcm::EClkMpu ) * US_PER_SECOND) /  PS_PER_SECOND ;

	return (TUint) cycleTime;

	}