arch/arm/mach-feroceon-kw2/kw2_family/cpu/mvCpu.c - kernel/prism - Git at Google

 /*******************************************************************************
 Copyright (C) Marvell International Ltd. and its affiliates

 This software file (the "File") is owned and distributed by Marvell
 International Ltd. and/or its affiliates ("Marvell") under the following
 alternative licensing terms.  Once you have made an election to distribute the
 File under one of the following license alternatives, please (i) delete this
 introductory statement regarding license alternatives, (ii) delete the two
 license alternatives that you have not elected to use and (iii) preserve the
 Marvell copyright notice above.

 ********************************************************************************
 Marvell Commercial License Option

 If you received this File from Marvell and you have entered into a commercial
 license agreement (a "Commercial License") with Marvell, the File is licensed
 to you under the terms of the applicable Commercial License.

 ********************************************************************************
 Marvell GPL License Option

 If you received this File from Marvell, you may opt to use, redistribute and/or
 modify this File in accordance with the terms and conditions of the General
 Public License Version 2, June 1991 (the "GPL License"), a copy of which is
 available along with the File in the license.txt file or by writing to the Free
 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 or
 on the worldwide web at http://www.gnu.org/licenses/gpl.txt.

 THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE IMPLIED
 WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY
 DISCLAIMED.  The GPL License provides additional details about this warranty
 disclaimer.
 ********************************************************************************
 Marvell BSD License Option

 If you received this File from Marvell, you may opt to use, redistribute and/or
 modify this File under the following licensing terms.
 Redistribution and use in source and binary forms, with or without modification,
 are permitted provided that the following conditions are met:

     * 	Redistributions of source code must retain the above copyright notice,
 	this list of conditions and the following disclaimer.

     *	Redistributions in binary form must reproduce the above copyright
 	notice, this list of conditions and the following disclaimer in the
 	documentation and/or other materials provided with the distribution.

     *	Neither the name of Marvell nor the names of its contributors may be
 	used to endorse or promote products derived from this software without
 	specific prior written permission.

 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 *******************************************************************************/

 #include "cpu/mvCpu.h"
 #include "ctrlEnv/mvCtrlEnvLib.h"
 #include "ctrlEnv/mvCtrlEnvRegs.h"
 #include "ctrlEnv/sys/mvCpuIfRegs.h"
 #include "boardEnv/mvBoardEnvSpec.h"
 #include "boardEnv/mvBoardEnvLib.h"

 /* defines  */
 #ifdef MV_DEBUG
 #define DB(x)	x
 #else
 #define DB(x)
 #endif

 /* locals */

 /*******************************************************************************
 * mvCpuClockEntryGet - Get the CPU / DDR / L2 entry index from the
 *			frequncies table.
 *
 * DESCRIPTION:
 *       This routine searches for a matching entry in the CPU / DDR / L2
 *	frequencies table according to the S@R value.
 *
 * INPUT:
 *       None.
 *
 * OUTPUT:
 *       None.
 *
 * RETURN:
 *       Index of matching entry, or 0xFFFFFFFF if S@R value is not valid.
 *
 *******************************************************************************/
 static MV_U32 mvCpuClockEntryGet(MV_VOID)
 {
 	MV_U32 i, res = -1;
 	MV_U32 sar0;
 	MV_U32 clockSatr;
 	MV_CPU_ARM_CLK cpuDdrL2Tbl[] = MV_CPU_DDR_L2_CLCK_TBL;
 	MV_CPU_ARM_CLK cpuDdrTbl6601[] = MV6601_CPU_DDR_CLCK_TBL;
 	MV_U32 boardId = mvBoardIdGet();

 	/* Read S@R registers value */
 	sar0 = MV_REG_READ(MPP_SAMPLE_AT_RESET(0));
 	clockSatr = MSAR_CPU_DDR_L2_CLCK_EXTRACT(sar0);

 	/* Search for a matching entry */
 	i = 0;
 	if (boardId == RD_88F6601_MC_ID || boardId == RD_88F6601_MC2L_ID ||
 	    boardId == DB_88F6601_BP_ID) {
 		while (cpuDdrTbl6601[i].satrValue != -1) {
 			if (cpuDdrTbl6601[i].satrValue == clockSatr) {
 				res = i;
 				break;
 			}
 			i++;
 		}
 	} else {
 		while (cpuDdrL2Tbl[i].satrValue != -1) {
 			if (cpuDdrL2Tbl[i].satrValue == clockSatr) {
 				res = i;
 				break;
 			}
 			i++;
 		}
 	}
 	return res;
 }

 /*******************************************************************************
 * mvCpuPclkGet - Get the CPU pClk (pipe clock)
 *
 * DESCRIPTION:
 *       This routine extract the CPU core clock.
 *
 * INPUT:
 *       None.
 *
 * OUTPUT:
 *       None.
 *
 * RETURN:
 *       32bit clock cycles in MHertz.
 *
 *******************************************************************************/
 MV_U32 mvCpuPclkGet(MV_VOID)
 {
 #if defined(PCLCK_AUTO_DETECT)
 	MV_U32 idx;
 	MV_CPU_ARM_CLK cpuDdrL2Tbl[] = MV_CPU_DDR_L2_CLCK_TBL;
 	MV_CPU_ARM_CLK cpuDdrTbl6601[] = MV6601_CPU_DDR_CLCK_TBL;
 	MV_U32 boardId = mvBoardIdGet();

 	idx = mvCpuClockEntryGet();
 	if (idx == 0xFFFFFFFF)
 		return 0;
 	else {
 		if (boardId == RD_88F6601_MC_ID || boardId == RD_88F6601_MC2L_ID ||
 		    boardId == DB_88F6601_BP_ID)
 			return cpuDdrTbl6601[idx].cpuClk;
 		else
 			return cpuDdrL2Tbl[idx].cpuClk;
 	}

 #else
 	return MV_DEFAULT_PCLK
 #endif
 }

 /*******************************************************************************
 * mvCpuL2ClkGet - Get the CPU L2 (CPU bus clock)
 *
 * DESCRIPTION:
 *       This routine extract the CPU L2 clock.
 *
 * RETURN:
 *       32bit clock cycles in Hertz.
 *
 *******************************************************************************/
 MV_U32 mvCpuL2ClkGet(MV_VOID)
 {
 #ifdef L2CLK_AUTO_DETECT
 	MV_U32 idx;
 	MV_CPU_ARM_CLK cpuDdrL2Tbl[] = MV_CPU_DDR_L2_CLCK_TBL;
 	MV_CPU_ARM_CLK cpuDdrTbl6601[] = MV6601_CPU_DDR_CLCK_TBL;
 	MV_U32 boardId = mvBoardIdGet();

 	idx = mvCpuClockEntryGet();
 	if (idx == 0xFFFFFFFF)
 		return 0;
 	else {
 		if (boardId == RD_88F6601_MC_ID || boardId == RD_88F6601_MC2L_ID ||
 		    boardId == RD_88F6601_MC_ID)
 			return cpuDdrTbl6601[idx].l2Clk;
 		else
 			return cpuDdrL2Tbl[idx].l2Clk;
 	}
 #else
 	return MV_BOARD_DEFAULT_L2CLK;
 #endif
 }

 /*******************************************************************************
 * mvCpuL2Exists
 *
 * DESCRIPTION:
 *       This routine checks if L2 exists according to reset strap.
 *
 * RETURN:
 *       MV_TRUE if L2 exists,
 *	MV_FALSE otherwise.
 *
 *******************************************************************************/
 MV_BOOL mvCpuL2Exists(MV_VOID)
 {
 	MV_U32 sar0;
 	MV_U32 id = mvBoardIdGet();

 	if (id == RD_88F6510_SFU_ID || id == DB_88F6601_BP_ID ||
 	    id == RD_88F6601_MC_ID || id == RD_88F6601_MC2L_ID)
 		return MV_FALSE;

 	/* Read S@R register value */
 	sar0 = MV_REG_READ(MPP_SAMPLE_AT_RESET(0));
 	if (sar0 & MSAR_L2EXIST_MASK)
 		return MV_TRUE;
 	else
 		return MV_FALSE;
 }

 /*******************************************************************************
 * mvCpuNameGet - Get CPU name
 *
 * DESCRIPTION:
 *       This function returns a string describing the CPU model and revision.
 *
 * INPUT:
 *       None.
 *
 * OUTPUT:
 *       pNameBuff - Buffer to contain board name string. Minimum size 32 chars.
 *
 * RETURN:
 *       None.
 *******************************************************************************/
 MV_VOID mvCpuNameGet(char *pNameBuff)
 {
 	MV_U32 cpuModel;

 	cpuModel = mvOsCpuPartGet();

 	/* The CPU module is indicated in the Processor Version Register (PVR) */
 	switch (cpuModel) {
 	case CPU_PART_MRVL131:
 		mvOsSPrintf(pNameBuff, "%s (Rev %d)", "Marvell Feroceon", mvOsCpuRevGet());
 		break;
 	case CPU_PART_ARM926:
 		mvOsSPrintf(pNameBuff, "%s (Rev %d)", "ARM926", mvOsCpuRevGet());
 		break;
 	case CPU_PART_ARM946:
 		mvOsSPrintf(pNameBuff, "%s (Rev %d)", "ARM946", mvOsCpuRevGet());
 		break;
 	default:
 		mvOsSPrintf(pNameBuff, "??? (0x%04x) (Rev %d)", cpuModel, mvOsCpuRevGet());
 		break;
 	}			/* switch  */

 	return;
 }

 #define MV_PROC_STR_SIZE 50

 static void mvCpuIfGetL2EccMode(MV_8 *buf)
 {
 	MV_U32 regVal = MV_REG_READ(CPU_L2_CONFIG_REG);

 	if (regVal & BIT2)
 		mvOsSPrintf(buf, "L2 ECC Enabled");
 	else
 		mvOsSPrintf(buf, "L2 ECC Disabled");
 }

 static void mvCpuIfGetL2Mode(MV_8 *buf)
 {
 	MV_U32 regVal = 0;

 	__asm volatile ("mrc	p15, 1, %0, c15, c1, 0" : "=r" (regVal));	/* Read Marvell extra features register */
 	if (regVal & BIT22)
 		mvOsSPrintf(buf, "L2 Enabled");
 	else
 		mvOsSPrintf(buf, "L2 Disabled");
 }

 static void mvCpuIfGetL2PrefetchMode(MV_8 *buf)
 {
 	MV_U32 regVal = 0;

 	__asm volatile ("mrc	p15, 1, %0, c15, c1, 0" : "=r" (regVal));	/* Read Marvell extra features register */
 	if (regVal & BIT24)
 		mvOsSPrintf(buf, "L2 Prefetch Disabled");
 	else
 		mvOsSPrintf(buf, "L2 Prefetch Enabled");
 }

 static void mvCpuIfGetWriteAllocMode(MV_8 *buf)
 {
 	MV_U32 regVal = 0;
 	__asm volatile ("mrc	p15, 1, %0, c15, c1, 0" : "=r" (regVal));	/* Read Marvell extra features register */
 	if (regVal & BIT28)
 		mvOsSPrintf(buf, "Write Allocate Enabled");
 	else
 		mvOsSPrintf(buf, "Write Allocate Disabled");
 }

 static void mvCpuIfGetCpuStreamMode(MV_8 *buf)
 {
 	MV_U32 regVal = 0;
 	__asm volatile ("mrc	p15, 1, %0, c15, c1, 0" : "=r" (regVal));	/* Read Marvell extra features register */
 	if (regVal & BIT29)
 		mvOsSPrintf(buf, "CPU Streaming Enabled");
 	else
 		mvOsSPrintf(buf, "CPU Streaming Disabled");
 }

 static void mvCpuIfPrintCpuRegs(void)
 {
 	MV_U32 regVal = 0;

 	__asm volatile ("mrc p15, 1, %0, c15, c1, 0" : "=r" (regVal));	/* Read Marvell extra features register */
 	mvOsPrintf("Extra Feature Reg = 0x%x\n", regVal);

 	__asm volatile ("mrc	p15, 0, %0, c1, c0, 0" : "=r" (regVal));	/* Read Control register */
 	mvOsPrintf("Control Reg = 0x%x\n", regVal);

 	__asm volatile ("mrc	p15, 0, %0, c0, c0, 0" : "=r" (regVal));	/* Read ID Code register */
 	mvOsPrintf("ID Code Reg = 0x%x\n", regVal);

 	__asm volatile ("mrc	p15, 0, %0, c0, c0, 1" : "=r" (regVal));	/* Read Cache Type register */
 	mvOsPrintf("Cache Type Reg = 0x%x\n", regVal);

 }

 MV_U32 mvCpuIfPrintSystemConfig(MV_8 *buffer, MV_U32 index)
 {
 	MV_U32 count = 0;

 	MV_8 L2_ECC_str[MV_PROC_STR_SIZE];
 	MV_8 L2_En_str[MV_PROC_STR_SIZE];
 	MV_8 L2_Prefetch_str[MV_PROC_STR_SIZE];
 	MV_8 Write_Alloc_str[MV_PROC_STR_SIZE];
 	MV_8 Cpu_Stream_str[MV_PROC_STR_SIZE];

 	if (mvCtrlModelGet() != MV_6601_DEV_ID) {
 		mvCpuIfGetL2Mode(L2_En_str);
 		mvCpuIfGetL2EccMode(L2_ECC_str);
 		mvCpuIfGetL2PrefetchMode(L2_Prefetch_str);
 	}
 	mvCpuIfGetWriteAllocMode(Write_Alloc_str);
 	mvCpuIfGetCpuStreamMode(Cpu_Stream_str);
 	mvCpuIfPrintCpuRegs();

 	if (mvCtrlModelGet() != MV_6601_DEV_ID) {
 		count += mvOsSPrintf(buffer + count + index, "%s\n", L2_En_str);
 		count += mvOsSPrintf(buffer + count + index, "%s\n", L2_ECC_str);
 		count += mvOsSPrintf(buffer + count + index, "%s\n", L2_Prefetch_str);
 	}
 	count += mvOsSPrintf(buffer + count + index, "%s\n", Write_Alloc_str);
 	count += mvOsSPrintf(buffer + count + index, "%s\n", Cpu_Stream_str);
 	count += mvOsSPrintf(buffer + count + index, "CPU Config Reg = 0x%08x\n", MV_REG_READ(CPU_CONFIG_REG));
 	if (mvCtrlModelGet() != MV_6601_DEV_ID)
 		count += mvOsSPrintf(buffer + count + index, "L2 Config Reg = 0x%08x\n", MV_REG_READ(CPU_L2_CONFIG_REG));

 	return count;
 }

 MV_U32 whoAmI(MV_VOID)
 {
 	return 0;
 }
	/*******************************************************************************
	Copyright (C) Marvell International Ltd. and its affiliates

	This software file (the "File") is owned and distributed by Marvell
	International Ltd. and/or its affiliates ("Marvell") under the following
	alternative licensing terms. Once you have made an election to distribute the
	File under one of the following license alternatives, please (i) delete this
	introductory statement regarding license alternatives, (ii) delete the two
	license alternatives that you have not elected to use and (iii) preserve the
	Marvell copyright notice above.

	********************************************************************************
	Marvell Commercial License Option

	If you received this File from Marvell and you have entered into a commercial
	license agreement (a "Commercial License") with Marvell, the File is licensed
	to you under the terms of the applicable Commercial License.

	********************************************************************************
	Marvell GPL License Option

	If you received this File from Marvell, you may opt to use, redistribute and/or
	modify this File in accordance with the terms and conditions of the General
	Public License Version 2, June 1991 (the "GPL License"), a copy of which is
	available along with the File in the license.txt file or by writing to the Free
	Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 or
	on the worldwide web at http://www.gnu.org/licenses/gpl.txt.

	THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE IMPLIED
	WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY
	DISCLAIMED. The GPL License provides additional details about this warranty
	disclaimer.
	********************************************************************************
	Marvell BSD License Option

	If you received this File from Marvell, you may opt to use, redistribute and/or
	modify this File under the following licensing terms.
	Redistribution and use in source and binary forms, with or without modification,
	are permitted provided that the following conditions are met:

	* Redistributions of source code must retain the above copyright notice,
	this list of conditions and the following disclaimer.

	* Redistributions in binary form must reproduce the above copyright
	notice, this list of conditions and the following disclaimer in the
	documentation and/or other materials provided with the distribution.

	* Neither the name of Marvell nor the names of its contributors may be
	used to endorse or promote products derived from this software without
	specific prior written permission.

	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
	ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
	WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
	ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
	(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
	ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
	SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

	*******************************************************************************/

	#include "cpu/mvCpu.h"
	#include "ctrlEnv/mvCtrlEnvLib.h"
	#include "ctrlEnv/mvCtrlEnvRegs.h"
	#include "ctrlEnv/sys/mvCpuIfRegs.h"
	#include "boardEnv/mvBoardEnvSpec.h"
	#include "boardEnv/mvBoardEnvLib.h"

	/* defines */
	#ifdef MV_DEBUG
	#define DB(x) x
	#else
	#define DB(x)
	#endif

	/* locals */

	/*******************************************************************************
	* mvCpuClockEntryGet - Get the CPU / DDR / L2 entry index from the
	* frequncies table.
	*
	* DESCRIPTION:
	* This routine searches for a matching entry in the CPU / DDR / L2
	* frequencies table according to the S@R value.
	*
	* INPUT:
	* None.
	*
	* OUTPUT:
	* None.
	*
	* RETURN:
	* Index of matching entry, or 0xFFFFFFFF if S@R value is not valid.
	*
	*******************************************************************************/
	static MV_U32 mvCpuClockEntryGet(MV_VOID)
	{
	MV_U32 i, res = -1;
	MV_U32 sar0;
	MV_U32 clockSatr;
	MV_CPU_ARM_CLK cpuDdrL2Tbl[] = MV_CPU_DDR_L2_CLCK_TBL;
	MV_CPU_ARM_CLK cpuDdrTbl6601[] = MV6601_CPU_DDR_CLCK_TBL;
	MV_U32 boardId = mvBoardIdGet();

	/* Read S@R registers value */
	sar0 = MV_REG_READ(MPP_SAMPLE_AT_RESET(0));
	clockSatr = MSAR_CPU_DDR_L2_CLCK_EXTRACT(sar0);

	/* Search for a matching entry */
	i = 0;
	if (boardId == RD_88F6601_MC_ID \|\| boardId == RD_88F6601_MC2L_ID \|\|
	boardId == DB_88F6601_BP_ID) {
	while (cpuDdrTbl6601[i].satrValue != -1) {
	if (cpuDdrTbl6601[i].satrValue == clockSatr) {
	res = i;
	break;
	}
	i++;
	}
	} else {
	while (cpuDdrL2Tbl[i].satrValue != -1) {
	if (cpuDdrL2Tbl[i].satrValue == clockSatr) {
	res = i;
	break;
	}
	i++;
	}
	}
	return res;
	}

	/*******************************************************************************
	* mvCpuPclkGet - Get the CPU pClk (pipe clock)
	*
	* DESCRIPTION:
	* This routine extract the CPU core clock.
	*
	* INPUT:
	* None.
	*
	* OUTPUT:
	* None.
	*
	* RETURN:
	* 32bit clock cycles in MHertz.
	*
	*******************************************************************************/
	MV_U32 mvCpuPclkGet(MV_VOID)
	{
	#if defined(PCLCK_AUTO_DETECT)
	MV_U32 idx;
	MV_CPU_ARM_CLK cpuDdrL2Tbl[] = MV_CPU_DDR_L2_CLCK_TBL;
	MV_CPU_ARM_CLK cpuDdrTbl6601[] = MV6601_CPU_DDR_CLCK_TBL;
	MV_U32 boardId = mvBoardIdGet();

	idx = mvCpuClockEntryGet();
	if (idx == 0xFFFFFFFF)
	return 0;
	else {
	if (boardId == RD_88F6601_MC_ID \|\| boardId == RD_88F6601_MC2L_ID \|\|
	boardId == DB_88F6601_BP_ID)
	return cpuDdrTbl6601[idx].cpuClk;
	else
	return cpuDdrL2Tbl[idx].cpuClk;
	}

	#else
	return MV_DEFAULT_PCLK
	#endif
	}

	/*******************************************************************************
	* mvCpuL2ClkGet - Get the CPU L2 (CPU bus clock)
	*
	* DESCRIPTION:
	* This routine extract the CPU L2 clock.
	*
	* RETURN:
	* 32bit clock cycles in Hertz.
	*
	*******************************************************************************/
	MV_U32 mvCpuL2ClkGet(MV_VOID)
	{
	#ifdef L2CLK_AUTO_DETECT
	MV_U32 idx;
	MV_CPU_ARM_CLK cpuDdrL2Tbl[] = MV_CPU_DDR_L2_CLCK_TBL;
	MV_CPU_ARM_CLK cpuDdrTbl6601[] = MV6601_CPU_DDR_CLCK_TBL;
	MV_U32 boardId = mvBoardIdGet();

	idx = mvCpuClockEntryGet();
	if (idx == 0xFFFFFFFF)
	return 0;
	else {
	if (boardId == RD_88F6601_MC_ID \|\| boardId == RD_88F6601_MC2L_ID \|\|
	boardId == RD_88F6601_MC_ID)
	return cpuDdrTbl6601[idx].l2Clk;
	else
	return cpuDdrL2Tbl[idx].l2Clk;
	}
	#else
	return MV_BOARD_DEFAULT_L2CLK;
	#endif
	}

	/*******************************************************************************
	* mvCpuL2Exists
	*
	* DESCRIPTION:
	* This routine checks if L2 exists according to reset strap.
	*
	* RETURN:
	* MV_TRUE if L2 exists,
	* MV_FALSE otherwise.
	*
	*******************************************************************************/
	MV_BOOL mvCpuL2Exists(MV_VOID)
	{
	MV_U32 sar0;
	MV_U32 id = mvBoardIdGet();

	if (id == RD_88F6510_SFU_ID \|\| id == DB_88F6601_BP_ID \|\|
	id == RD_88F6601_MC_ID \|\| id == RD_88F6601_MC2L_ID)
	return MV_FALSE;

	/* Read S@R register value */
	sar0 = MV_REG_READ(MPP_SAMPLE_AT_RESET(0));
	if (sar0 & MSAR_L2EXIST_MASK)
	return MV_TRUE;
	else
	return MV_FALSE;
	}

	/*******************************************************************************
	* mvCpuNameGet - Get CPU name
	*
	* DESCRIPTION:
	* This function returns a string describing the CPU model and revision.
	*
	* INPUT:
	* None.
	*
	* OUTPUT:
	* pNameBuff - Buffer to contain board name string. Minimum size 32 chars.
	*
	* RETURN:
	* None.
	*******************************************************************************/
	MV_VOID mvCpuNameGet(char *pNameBuff)
	{
	MV_U32 cpuModel;

	cpuModel = mvOsCpuPartGet();

	/* The CPU module is indicated in the Processor Version Register (PVR) */
	switch (cpuModel) {
	case CPU_PART_MRVL131:
	mvOsSPrintf(pNameBuff, "%s (Rev %d)", "Marvell Feroceon", mvOsCpuRevGet());
	break;
	case CPU_PART_ARM926:
	mvOsSPrintf(pNameBuff, "%s (Rev %d)", "ARM926", mvOsCpuRevGet());
	break;
	case CPU_PART_ARM946:
	mvOsSPrintf(pNameBuff, "%s (Rev %d)", "ARM946", mvOsCpuRevGet());
	break;
	default:
	mvOsSPrintf(pNameBuff, "??? (0x%04x) (Rev %d)", cpuModel, mvOsCpuRevGet());
	break;
	} /* switch */

	return;
	}

	#define MV_PROC_STR_SIZE 50

	static void mvCpuIfGetL2EccMode(MV_8 *buf)
	{
	MV_U32 regVal = MV_REG_READ(CPU_L2_CONFIG_REG);

	if (regVal & BIT2)
	mvOsSPrintf(buf, "L2 ECC Enabled");
	else
	mvOsSPrintf(buf, "L2 ECC Disabled");
	}

	static void mvCpuIfGetL2Mode(MV_8 *buf)
	{
	MV_U32 regVal = 0;

	__asm volatile ("mrc p15, 1, %0, c15, c1, 0" : "=r" (regVal)); /* Read Marvell extra features register */
	if (regVal & BIT22)
	mvOsSPrintf(buf, "L2 Enabled");
	else
	mvOsSPrintf(buf, "L2 Disabled");
	}

	static void mvCpuIfGetL2PrefetchMode(MV_8 *buf)
	{
	MV_U32 regVal = 0;

	__asm volatile ("mrc p15, 1, %0, c15, c1, 0" : "=r" (regVal)); /* Read Marvell extra features register */
	if (regVal & BIT24)
	mvOsSPrintf(buf, "L2 Prefetch Disabled");
	else
	mvOsSPrintf(buf, "L2 Prefetch Enabled");
	}

	static void mvCpuIfGetWriteAllocMode(MV_8 *buf)
	{
	MV_U32 regVal = 0;
	__asm volatile ("mrc p15, 1, %0, c15, c1, 0" : "=r" (regVal)); /* Read Marvell extra features register */
	if (regVal & BIT28)
	mvOsSPrintf(buf, "Write Allocate Enabled");
	else
	mvOsSPrintf(buf, "Write Allocate Disabled");
	}

	static void mvCpuIfGetCpuStreamMode(MV_8 *buf)
	{
	MV_U32 regVal = 0;
	__asm volatile ("mrc p15, 1, %0, c15, c1, 0" : "=r" (regVal)); /* Read Marvell extra features register */
	if (regVal & BIT29)
	mvOsSPrintf(buf, "CPU Streaming Enabled");
	else
	mvOsSPrintf(buf, "CPU Streaming Disabled");
	}

	static void mvCpuIfPrintCpuRegs(void)
	{
	MV_U32 regVal = 0;

	__asm volatile ("mrc p15, 1, %0, c15, c1, 0" : "=r" (regVal)); /* Read Marvell extra features register */
	mvOsPrintf("Extra Feature Reg = 0x%x\n", regVal);

	__asm volatile ("mrc p15, 0, %0, c1, c0, 0" : "=r" (regVal)); /* Read Control register */
	mvOsPrintf("Control Reg = 0x%x\n", regVal);

	__asm volatile ("mrc p15, 0, %0, c0, c0, 0" : "=r" (regVal)); /* Read ID Code register */
	mvOsPrintf("ID Code Reg = 0x%x\n", regVal);

	__asm volatile ("mrc p15, 0, %0, c0, c0, 1" : "=r" (regVal)); /* Read Cache Type register */
	mvOsPrintf("Cache Type Reg = 0x%x\n", regVal);

	}

	MV_U32 mvCpuIfPrintSystemConfig(MV_8 *buffer, MV_U32 index)
	{
	MV_U32 count = 0;

	MV_8 L2_ECC_str[MV_PROC_STR_SIZE];
	MV_8 L2_En_str[MV_PROC_STR_SIZE];
	MV_8 L2_Prefetch_str[MV_PROC_STR_SIZE];
	MV_8 Write_Alloc_str[MV_PROC_STR_SIZE];
	MV_8 Cpu_Stream_str[MV_PROC_STR_SIZE];

	if (mvCtrlModelGet() != MV_6601_DEV_ID) {
	mvCpuIfGetL2Mode(L2_En_str);
	mvCpuIfGetL2EccMode(L2_ECC_str);
	mvCpuIfGetL2PrefetchMode(L2_Prefetch_str);
	}
	mvCpuIfGetWriteAllocMode(Write_Alloc_str);
	mvCpuIfGetCpuStreamMode(Cpu_Stream_str);
	mvCpuIfPrintCpuRegs();

	if (mvCtrlModelGet() != MV_6601_DEV_ID) {
	count += mvOsSPrintf(buffer + count + index, "%s\n", L2_En_str);
	count += mvOsSPrintf(buffer + count + index, "%s\n", L2_ECC_str);
	count += mvOsSPrintf(buffer + count + index, "%s\n", L2_Prefetch_str);
	}
	count += mvOsSPrintf(buffer + count + index, "%s\n", Write_Alloc_str);
	count += mvOsSPrintf(buffer + count + index, "%s\n", Cpu_Stream_str);
	count += mvOsSPrintf(buffer + count + index, "CPU Config Reg = 0x%08x\n", MV_REG_READ(CPU_CONFIG_REG));
	if (mvCtrlModelGet() != MV_6601_DEV_ID)
	count += mvOsSPrintf(buffer + count + index, "L2 Config Reg = 0x%08x\n", MV_REG_READ(CPU_L2_CONFIG_REG));

	return count;
	}

	MV_U32 whoAmI(MV_VOID)
	{
	return 0;
	}