1 // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of the License "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // e32\include\nkernsmp\x86\ncern.h

    15 // 

    16 // WARNING: This file contains some APIs which are internal and are subject

    17 //          to change without notice. Such APIs should therefore not be used

    18 //          outside the Kernel and Hardware Services package.

    19 //

    20 

    21 /**

    22  @file

    23  @publishedPartner

    24  @prototype

    25 */

    26 

    27 #ifndef __NCERN_H__

    28 #define __NCERN_H__

    29 

    30 

    31 /** Information needed to boot an AP (x86 specific)

    32 

    33 @internalTechnology

    34 */

    35 struct SX86APBootInfo : public SAPBootInfo

    36 	{

    37 	};

    38 

    39 /** Timer frequency specification

    40 

    41 Stores a frequency as a fraction of a (separately stored) maximum.

    42 The frequency must be at least 1/256 of the maximum.

    43 

    44 @internalTechnology

    45 @prototype

    46 */

    47 struct STimerMult

    48 	{

    49 	TUint32		iFreq;						// frequency as a fraction of maximum possible, multiplied by 2^32

    50 	TUint32		iInverse;					// 2^24/(iFreq/2^32) = 2^56/iFreq

    51 	};

    52 

    53 /** Variant interface block

    54 @internalTechnology

    55 @prototype

    56 */

    57 struct SVariantInterfaceBlock : public SInterfaceBlockBase

    58 	{

    59 	TUint64		iMaxCpuClock;				// maximum possible CPU clock frequency on this system

    60 	TUint32		iTimestampFreq;				// rate at which timestamp increments

    61 	TUint32		iMaxTimerClock;				// maximum possible local timer clock frequency

    62 	volatile STimerMult* iTimerMult[KMaxCpus];	// timer[i] frequency as a fraction of iMaxTimerClock

    63 	volatile TUint32* iCpuMult[KMaxCpus];	// CPU[i] frequency / iMaxCpuClock * 2^32

    64 	};

    65 

    66 // End of file

    67 #endif