arch/arm/plat-feroceon/mv_hal/norflash/mvIntelFlash.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 "mvFlash.h"

 #undef MV_DEBUG

 #ifdef MV_DEBUG
 #define DB(x) x
 #else
 #define DB(x)
 #endif

 static MV_STATUS intelFlashStsGet(MV_FLASH_INFO *pFlash, MV_U32 sec, MV_BOOL enableReadCommand, MV_U32 *flashStatus);
 static MV_VOID intelFlashStatusClr(MV_FLASH_INFO *pFlash);

 /*******************************************************************************
 * reset the flash
 *******************************************************************************/
 MV_VOID intelFlashReset(MV_FLASH_INFO *pFlash)
 {
 	flashCmdSet(pFlash, 0, 0, INTEL_CHIP_CMD_RST);
 	return;
 }

 /*******************************************************************************
 * intelFlashSecErase - Erase a sector.
 *
 * DESCRIPTION:
 *	Erase a Flash sector.
 *
 * INPUT:
 *       secNum	- sector Number.
 *	pFlash	- flash information.
 *
 * OUTPUT:
 *	None
 *
 * RETURN:
 *       MV_OK if program completed successfully,
 *	MV_TIMEOUT if timeout reached,
 *	MV_FAIL otherwise.
 *
 *******************************************************************************/
 MV_STATUS intelFlashSecErase(MV_FLASH_INFO *pFlash, MV_U32 secNum)
 {
 	MV_U32 i, status, flashStatus;

 	DB(mvOsPrintf("Flash: intelFlashSecErase\n"));

 	/* clear status */
 	intelFlashStatusClr(pFlash);

 	/* erase sequence */
 	flashCmdSet(pFlash, 0, secNum, INTEL_CHIP_CMD_ERASE1);
 	flashCmdSet(pFlash, 0, secNum, INTEL_CHIP_CMD_ERASE2);

 	/* wait for erase to complete */
 	for (i = 0; i < INTEL_EARASE_MILI_TIMEOUT; i++) {
 		mvOsDelay(1);
 		status = intelFlashStsGet(pFlash, 0, MV_TRUE, &flashStatus);
 		if (MV_NOT_READY != status)
 			return status;
 	}
 	mvOsPrintf("Flash: ERROR intelFlashSecErase timeout \n");

 	return MV_TIMEOUT;
 }

 /*******************************************************************************
 * intelFlashProg - Prog busWidth Bits into the address offest in the flash.
 *
 * DESCRIPTION:
 *       This function writes busWidth data to a given flash offset.
 *
 * INPUT:
 *       pFlash - Flash identifier structure (flash cockie).
 *       offset - Offset from flash base address.
 *       data   - 32bit data to be written to flash.
 *
 * OUTPUT:
 *       None.
 *
 * RETURN:
 *       MV_OK if program completed successfully,
 *	MV_TIMEOUT if timeout reached,
 *	MV_FAIL otherwise.
 *
 *******************************************************************************/
 MV_STATUS intelFlashProg(MV_FLASH_INFO *pFlash, MV_U32 offset, MV_U32 data)
 {
 	MV_U32 i, status, flashStatus;

 	DB(mvOsPrintf("Flash: mvIntelFlashWr\n"));

 	/* clear status */
 	intelFlashStatusClr(pFlash);

 	/* write sequence */
 	flashCmdSet(pFlash, 0, 0, INTEL_CHIP_CMD_PROG);
 	flashBusWidthDataWr(pFlash, offset + mvFlashBaseAddrGet(pFlash), data);

 	/* wait for write to complete */
 	for (i = 0; i < INTEL_PROG_TIMEOUT; i++) {
 		status = intelFlashStsGet(pFlash, 0, MV_TRUE, &flashStatus);
 		if (MV_NOT_READY != status)
 			return status;
 	}
 	mvOsPrintf("Flash: ERROR intelFlashSecErase timeout \n");

 	return MV_TIMEOUT;
 }

 MV_U32 intelFlashGetHwBuffSize(MV_FLASH_INFO *pFlash)
 {
 	MV_U32 buffSize;

 	buffSize = mvFlashNumOfDevGet(pFlash) * pFlash->flashSpec.HwBuffLen;
 	return buffSize;
 }

 /*******************************************************************************
 * intelFlashBufferProg - Prog hw buff into the address offest in the flash.
 *
 * DESCRIPTION:
 *       This function writes busWidth data to a given flash offset.
 *
 * INPUT:
 *       pFlash - Flash identifier structure (flash cockie).
 *       offset - Offset from flash base address.
 *       pData  - buffer (32 byte) data to be written to flash.
 *
 * OUTPUT:
 *       None.
 *
 * RETURN:
 *   MV_OK if program completed successfully,
 *   MV_BAD_PARAM illegal param
 *	MV_TIMEOUT if timeout reached,
 *	MV_FAIL otherwise.
 *
 *******************************************************************************/
 MV_STATUS intelFlashHwBufferProg(MV_FLASH_INFO *pFlash, MV_U32 offset, MV_U32 byteCount, MV_U8 *pData)
 {
 	MV_U32 i, status, flashStatus;
 	MV_U32 buffSize, sec, wordCount, busWidth;
 	MV_U32 offInBuff, absOffInFlash;
 	MV_U32 data, j;

 	DB(mvOsPrintf("Flash: intelFlashBufferProg\n"));
 	buffSize = (intelFlashGetHwBuffSize(pFlash));
 	if (buffSize == 0)
 		return MV_BAD_PARAM;

 	if (0 != (byteCount % buffSize))
 		return MV_BAD_PARAM;

 	/* has to be aligned */
 	if ((offset % buffSize) != 0)
 		return MV_BAD_PARAM;
 #ifndef CONFIG_MARVELL
 	if (pData == NULL)
 		return MV_BAD_PARAM;
 #endif

 	busWidth = mvFlashBusWidthGet(pFlash);
 	wordCount = (pFlash->flashSpec.HwBuffLen / mvFlashDevWidthGet(pFlash));
 	absOffInFlash = mvFlashBaseAddrGet(pFlash) + offset;
 	offInBuff = 0;

 	/* clear status */
 	intelFlashStatusClr(pFlash);

 	do {

 		/* Start the 'write to buffer' sequence */
 		sec = mvFlashInWhichSec(pFlash, offset);

 		i = 0;
 		do {
 			flashCmdSet(pFlash, 0, sec, INTEL_CHIP_CMD_WR_BUF);

 			status = intelFlashStsGet(pFlash, sec, MV_FALSE, &flashStatus);

 			if ((i++ > INTEL_PROG_TIMEOUT) && (status != MV_OK)) {
 				DB(printf("intelFlashHwBufferProg1: Timeout:offset = 0x%x flashStatus =0x%x\n",
 					  offset, flashStatus));
 				return status;
 			}

 		} while (status != MV_OK);

 		/* write num of words to write minus 1 */
 		flashCmdSet(pFlash, 0, sec, wordCount - 1);

 		for (i = 0; i < wordCount * mvFlashNumOfDevGet(pFlash); i += mvFlashNumOfDevGet(pFlash)) {
 			data = 0;
 			switch (busWidth) {
 			case 4:
 				for (j = 0; j < 4; j++) {
 					/* [44][55][66][77] -> 0x44556677  */
 					data |= (pData[offInBuff + j] & FLASH_MASK_8BIT) << (8 * (3 - j));
 				}
 				data = MV_32BIT_BE(data);
 				break;
 			case 2:
 				for (j = 0; j < 2; j++) {
 					/* [44][55] -> 0x4455  */
 					data |= (pData[offInBuff + j] & FLASH_MASK_8BIT) << (8 * (1 - j));
 				}
 				data = MV_16BIT_BE(data);
 				break;
 			case 1:
 				data = *(MV_U8 *) (((MV_U32) pData) + offInBuff);
 				break;
 			}
 			flashBusWidthDataWr(pFlash, absOffInFlash, data);

 			offInBuff += busWidth;
 			absOffInFlash += busWidth;
 		}

 		flashCmdSet(pFlash, 0, sec, INTEL_CHIP_CMD_CONFIRM_BUF);

 		/* check status  */
 		for (i = 0; i < INTEL_PROG_TIMEOUT; i++) {
 			status = intelFlashStsGet(pFlash, sec, MV_FALSE, &flashStatus);
 			if (status == MV_OK)
 				break;
 		}

 		if (status != MV_OK)
 			break;

 		byteCount -= buffSize;
 	} while (byteCount);

 	if (status != MV_OK) {

 		DB(printf("intelFlashHwBufferProg2: Timeout:offset = 0x%x flashStatus =0x%x\n", offset, flashStatus));

 		return status;
 	}

 	return MV_OK;
 }

 /*******************************************************************************
 * intelSecLockGet - Return a sector Lock Bit status.
 *
 * DESCRIPTION:
 *	Return a sector Lock Bit status.
 *
 *
 * INPUT:
 *       pFlash	- Flash structure.
 *       secNum 	- Sector Number.
 *
 * OUTPUT:
 *	None.
 *
 * RETURN:
 *       MV_TRUE if lock is set
 *	MV_FALSE if lock isn't set
 *
 *******************************************************************************/
 MV_BOOL intelFlashSecLockGet(MV_FLASH_INFO *pFlash, MV_U32 secNum)
 {
 	MV_U32 status;

 	DB(mvOsPrintf("Flash: intelSecLockGet sector %d\n", secNum));

 	/* clear status */
 	intelFlashStatusClr(pFlash);

 	/* Some Micron flashes don't use A0 address for Identifier and
 	   Lock information, so in order to read Identifier and lock information
 	   properly we will do the following workarround:
 	   If our device width is 1 (x8) then if address 0 equal to address 1
 	   and address 2 equal to address 3 ,then we have this case (A0 is not used)
 	   and then we will issue the address without A0 to read the Identifier and
 	   lock information properly */

 	/* read Query sequence */
 	flashCmdSet(pFlash, 0, 0, INTEL_CHIP_CMD_RD_QUERY);

 	if ((pFlash->devWidth == 1) &&
 	    ((flashBusWidthRd(pFlash, flashAddrExt(pFlash, 0, 0)) ==
 	      flashBusWidthRd(pFlash, flashAddrExt(pFlash, 1, 0))) &&
 	     (flashBusWidthRd(pFlash, flashAddrExt(pFlash, 2, 0)) ==
 	      flashBusWidthRd(pFlash, flashAddrExt(pFlash, 3, 0))))) {
 		status = flashBusWidthRd(pFlash, flashAddrExt(pFlash, 4, secNum));

 	} else
 		status = flashBusWidthRd(pFlash, flashAddrExt(pFlash, 2, secNum));

 	if ((status & flashDataExt(pFlash, INTEL_CHIP_RD_ID_LOCK)) != 0) {
 		DB(mvOsPrintf("Flash: intelSecLockGet sector %d is locked \n", secNum));
 		return MV_TRUE;
 	}

 	return MV_FALSE;
 }

 /*******************************************************************************
 * intelSecLock - Lock/Unlock a Sector in the flash for Writing.
 *
 * DESCRIPTION:
 *       Lock/Unlock a Sector in the flash for Writing.
 *
 * INPUT:
 *       pFlash	- Flash identifier structure.
 *       secNum	- Sector Number.
 *       enable	- MV_TRUE for Lock MV_FALSE for un-lock.
 *
 * OUTPUT:
 *      None
 *
 * RETURN:
 *       MV_OK if program completed successfully,
 *	MV_TIMEOUT if timeout reached,
 *	MV_FAIL otherwise.
 *
 *******************************************************************************/
 MV_STATUS intelFlashSecLock(MV_FLASH_INFO *pFlash, MV_U32 secNum, MV_BOOL enable)
 {
 	MV_U32 status, intelLockEna, i, flashStatus;

 	status = MV_ERROR;

 	DB(mvOsPrintf("Flash: intelSecLock"));

 	/* lock */
 	if (enable == MV_TRUE) {
 		DB(mvOsPrintf("Flash: intelSecLock Lock sector %d \n", secNum));
 		intelLockEna = INTEL_CHIP_CMD_SET_LOCK_BLK;
 	} else {		/* unlock */
 		DB(mvOsPrintf("Flash: intelSecLock Unlock sector %d \n", secNum));
 		intelLockEna = INTEL_CHIP_CMD_CLR_LOCK_BLK;
 	}

 	/* clear status */
 	intelFlashStatusClr(pFlash);

 	/* Un/lock sequence */
 	flashCmdSet(pFlash, 0, 0, INTEL_CHIP_CMD_LOCK);
 	flashCmdSet(pFlash, 0, secNum, intelLockEna);

 	/* wait for write to complete */
 	for (i = 0; i < INTEL_LOCK_MILI_TIMEOUT; i++) {
 		mvOsDelay(1);
 		status = intelFlashStsGet(pFlash, 0, MV_TRUE, &flashStatus);
 		if (status != MV_NOT_READY)
 			break;
 	}
 	/* if timeout */
 	if (i >= INTEL_LOCK_MILI_TIMEOUT) {
 		mvOsPrintf("Flash: ERROR intelSecLock timeout \n");
 		return MV_TIMEOUT;
 	}
 	/* if completed successfully */
 	if (MV_OK == status) {
 		/* Unprotect one sector, which means unprotect all flash
 		 * and reprotect the other protected sectors.
 		 */
 		if (enable == MV_FALSE) {
 			for (i = 0; i < mvFlashNumOfSecsGet(pFlash); i++)
 				if ((i != secNum) && (MV_TRUE == mvFlashSecLockGet(pFlash, i)))
 					if (MV_OK != intelFlashSecLock(pFlash, i, MV_TRUE))
 						return MV_FAIL;
 		}
 		return MV_OK;
 	}
 	/* otherwise FAIL */
 	return MV_FAIL;
 }

 /*******************************************************************************
 * Check the Flash Status and return:
 *	MV_OK if status is ready and there isn't any error.
 *	MV_FAIL if status is ready and there is an error.
 *	MV_NOT_READY if status isn't ready.
 *******************************************************************************/
 static MV_STATUS intelFlashStsGet(MV_FLASH_INFO *pFlash, MV_U32 sec, MV_BOOL enableReadCommand, MV_U32 *flashStatus)
 {
 	MV_U32 status;

 	if (enableReadCommand)
 		flashCmdSet(pFlash, 0, 0, INTEL_CHIP_CMD_RD_STAT);
 	status = flashBusWidthRd(pFlash, pFlash->baseAddr + mvFlashSecOffsGet(pFlash, sec));

 	*flashStatus = status;

 	if ((status & flashDataExt(pFlash, INTEL_CHIP_STAT_RDY)) == flashDataExt(pFlash, INTEL_CHIP_STAT_RDY)) {
 		DB(mvOsPrintf("Flash: intelFlashStatusChk value is ready \n"));
 		if ((status & flashDataExt(pFlash, INTEL_CHIP_STAT_ERR)) != 0) {
 			mvOsPrintf("Flash: intelFlashStatusChk value has ERROR %x \n", status);
 			return MV_FAIL;
 		}
 		return MV_OK;
 	}

 	DB(mvOsPrintf("Flash: intelFlashStatusChk staus is %x and should %x \n",
 		      status, flashDataExt(pFlash, INTEL_CHIP_STAT_RDY)));
 	return MV_NOT_READY;
 }

 /*******************************************************************************
 * Clear the Flash Status.
 *******************************************************************************/
 static MV_VOID intelFlashStatusClr(MV_FLASH_INFO *pFlash)
 {
 	flashCmdSet(pFlash, 0, 0, INTEL_CHIP_CMD_CLR_STAT);
 	return;
 }
	/*******************************************************************************
	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 "mvFlash.h"

	#undef MV_DEBUG

	#ifdef MV_DEBUG
	#define DB(x) x
	#else
	#define DB(x)
	#endif

	static MV_STATUS intelFlashStsGet(MV_FLASH_INFO pFlash, MV_U32 sec, MV_BOOL enableReadCommand, MV_U32 flashStatus);
	static MV_VOID intelFlashStatusClr(MV_FLASH_INFO *pFlash);

	/*******************************************************************************
	* reset the flash
	*******************************************************************************/
	MV_VOID intelFlashReset(MV_FLASH_INFO *pFlash)
	{
	flashCmdSet(pFlash, 0, 0, INTEL_CHIP_CMD_RST);
	return;
	}

	/*******************************************************************************
	* intelFlashSecErase - Erase a sector.
	*
	* DESCRIPTION:
	* Erase a Flash sector.
	*
	* INPUT:
	* secNum - sector Number.
	* pFlash - flash information.
	*
	* OUTPUT:
	* None
	*
	* RETURN:
	* MV_OK if program completed successfully,
	* MV_TIMEOUT if timeout reached,
	* MV_FAIL otherwise.
	*
	*******************************************************************************/
	MV_STATUS intelFlashSecErase(MV_FLASH_INFO *pFlash, MV_U32 secNum)
	{
	MV_U32 i, status, flashStatus;

	DB(mvOsPrintf("Flash: intelFlashSecErase\n"));

	/* clear status */
	intelFlashStatusClr(pFlash);

	/* erase sequence */
	flashCmdSet(pFlash, 0, secNum, INTEL_CHIP_CMD_ERASE1);
	flashCmdSet(pFlash, 0, secNum, INTEL_CHIP_CMD_ERASE2);

	/* wait for erase to complete */
	for (i = 0; i < INTEL_EARASE_MILI_TIMEOUT; i++) {
	mvOsDelay(1);
	status = intelFlashStsGet(pFlash, 0, MV_TRUE, &flashStatus);
	if (MV_NOT_READY != status)
	return status;
	}
	mvOsPrintf("Flash: ERROR intelFlashSecErase timeout \n");

	return MV_TIMEOUT;
	}

	/*******************************************************************************
	* intelFlashProg - Prog busWidth Bits into the address offest in the flash.
	*
	* DESCRIPTION:
	* This function writes busWidth data to a given flash offset.
	*
	* INPUT:
	* pFlash - Flash identifier structure (flash cockie).
	* offset - Offset from flash base address.
	* data - 32bit data to be written to flash.
	*
	* OUTPUT:
	* None.
	*
	* RETURN:
	* MV_OK if program completed successfully,
	* MV_TIMEOUT if timeout reached,
	* MV_FAIL otherwise.
	*
	*******************************************************************************/
	MV_STATUS intelFlashProg(MV_FLASH_INFO *pFlash, MV_U32 offset, MV_U32 data)
	{
	MV_U32 i, status, flashStatus;

	DB(mvOsPrintf("Flash: mvIntelFlashWr\n"));

	/* clear status */
	intelFlashStatusClr(pFlash);

	/* write sequence */
	flashCmdSet(pFlash, 0, 0, INTEL_CHIP_CMD_PROG);
	flashBusWidthDataWr(pFlash, offset + mvFlashBaseAddrGet(pFlash), data);

	/* wait for write to complete */
	for (i = 0; i < INTEL_PROG_TIMEOUT; i++) {
	status = intelFlashStsGet(pFlash, 0, MV_TRUE, &flashStatus);
	if (MV_NOT_READY != status)
	return status;
	}
	mvOsPrintf("Flash: ERROR intelFlashSecErase timeout \n");

	return MV_TIMEOUT;
	}

	MV_U32 intelFlashGetHwBuffSize(MV_FLASH_INFO *pFlash)
	{
	MV_U32 buffSize;

	buffSize = mvFlashNumOfDevGet(pFlash) * pFlash->flashSpec.HwBuffLen;
	return buffSize;
	}

	/*******************************************************************************
	* intelFlashBufferProg - Prog hw buff into the address offest in the flash.
	*
	* DESCRIPTION:
	* This function writes busWidth data to a given flash offset.
	*
	* INPUT:
	* pFlash - Flash identifier structure (flash cockie).
	* offset - Offset from flash base address.
	* pData - buffer (32 byte) data to be written to flash.
	*
	* OUTPUT:
	* None.
	*
	* RETURN:
	* MV_OK if program completed successfully,
	* MV_BAD_PARAM illegal param
	* MV_TIMEOUT if timeout reached,
	* MV_FAIL otherwise.
	*
	*******************************************************************************/
	MV_STATUS intelFlashHwBufferProg(MV_FLASH_INFO pFlash, MV_U32 offset, MV_U32 byteCount, MV_U8 pData)
	{
	MV_U32 i, status, flashStatus;
	MV_U32 buffSize, sec, wordCount, busWidth;
	MV_U32 offInBuff, absOffInFlash;
	MV_U32 data, j;

	DB(mvOsPrintf("Flash: intelFlashBufferProg\n"));
	buffSize = (intelFlashGetHwBuffSize(pFlash));
	if (buffSize == 0)
	return MV_BAD_PARAM;

	if (0 != (byteCount % buffSize))
	return MV_BAD_PARAM;

	/* has to be aligned */
	if ((offset % buffSize) != 0)
	return MV_BAD_PARAM;
	#ifndef CONFIG_MARVELL
	if (pData == NULL)
	return MV_BAD_PARAM;
	#endif

	busWidth = mvFlashBusWidthGet(pFlash);
	wordCount = (pFlash->flashSpec.HwBuffLen / mvFlashDevWidthGet(pFlash));
	absOffInFlash = mvFlashBaseAddrGet(pFlash) + offset;
	offInBuff = 0;

	/* clear status */
	intelFlashStatusClr(pFlash);

	do {

	/* Start the 'write to buffer' sequence */
	sec = mvFlashInWhichSec(pFlash, offset);

	i = 0;
	do {
	flashCmdSet(pFlash, 0, sec, INTEL_CHIP_CMD_WR_BUF);

	status = intelFlashStsGet(pFlash, sec, MV_FALSE, &flashStatus);

	if ((i++ > INTEL_PROG_TIMEOUT) && (status != MV_OK)) {
	DB(printf("intelFlashHwBufferProg1: Timeout:offset = 0x%x flashStatus =0x%x\n",
	offset, flashStatus));
	return status;
	}

	} while (status != MV_OK);

	/* write num of words to write minus 1 */
	flashCmdSet(pFlash, 0, sec, wordCount - 1);

	for (i = 0; i < wordCount * mvFlashNumOfDevGet(pFlash); i += mvFlashNumOfDevGet(pFlash)) {
	data = 0;
	switch (busWidth) {
	case 4:
	for (j = 0; j < 4; j++) {
	/* [44][55][66][77] -> 0x44556677 */
	data \|= (pData[offInBuff + j] & FLASH_MASK_8BIT) << (8 * (3 - j));
	}
	data = MV_32BIT_BE(data);
	break;
	case 2:
	for (j = 0; j < 2; j++) {
	/* [44][55] -> 0x4455 */
	data \|= (pData[offInBuff + j] & FLASH_MASK_8BIT) << (8 * (1 - j));
	}
	data = MV_16BIT_BE(data);
	break;
	case 1:
	data = (MV_U8 ) (((MV_U32) pData) + offInBuff);
	break;
	}
	flashBusWidthDataWr(pFlash, absOffInFlash, data);

	offInBuff += busWidth;
	absOffInFlash += busWidth;
	}

	flashCmdSet(pFlash, 0, sec, INTEL_CHIP_CMD_CONFIRM_BUF);

	/* check status */
	for (i = 0; i < INTEL_PROG_TIMEOUT; i++) {
	status = intelFlashStsGet(pFlash, sec, MV_FALSE, &flashStatus);
	if (status == MV_OK)
	break;
	}

	if (status != MV_OK)
	break;

	byteCount -= buffSize;
	} while (byteCount);

	if (status != MV_OK) {

	DB(printf("intelFlashHwBufferProg2: Timeout:offset = 0x%x flashStatus =0x%x\n", offset, flashStatus));

	return status;
	}

	return MV_OK;
	}

	/*******************************************************************************
	* intelSecLockGet - Return a sector Lock Bit status.
	*
	* DESCRIPTION:
	* Return a sector Lock Bit status.
	*
	*
	* INPUT:
	* pFlash - Flash structure.
	* secNum - Sector Number.
	*
	* OUTPUT:
	* None.
	*
	* RETURN:
	* MV_TRUE if lock is set
	* MV_FALSE if lock isn't set
	*
	*******************************************************************************/
	MV_BOOL intelFlashSecLockGet(MV_FLASH_INFO *pFlash, MV_U32 secNum)
	{
	MV_U32 status;

	DB(mvOsPrintf("Flash: intelSecLockGet sector %d\n", secNum));

	/* clear status */
	intelFlashStatusClr(pFlash);

	/* Some Micron flashes don't use A0 address for Identifier and
	Lock information, so in order to read Identifier and lock information
	properly we will do the following workarround:
	If our device width is 1 (x8) then if address 0 equal to address 1
	and address 2 equal to address 3 ,then we have this case (A0 is not used)
	and then we will issue the address without A0 to read the Identifier and
	lock information properly */

	/* read Query sequence */
	flashCmdSet(pFlash, 0, 0, INTEL_CHIP_CMD_RD_QUERY);

	if ((pFlash->devWidth == 1) &&
	((flashBusWidthRd(pFlash, flashAddrExt(pFlash, 0, 0)) ==
	flashBusWidthRd(pFlash, flashAddrExt(pFlash, 1, 0))) &&
	(flashBusWidthRd(pFlash, flashAddrExt(pFlash, 2, 0)) ==
	flashBusWidthRd(pFlash, flashAddrExt(pFlash, 3, 0))))) {
	status = flashBusWidthRd(pFlash, flashAddrExt(pFlash, 4, secNum));

	} else
	status = flashBusWidthRd(pFlash, flashAddrExt(pFlash, 2, secNum));

	if ((status & flashDataExt(pFlash, INTEL_CHIP_RD_ID_LOCK)) != 0) {
	DB(mvOsPrintf("Flash: intelSecLockGet sector %d is locked \n", secNum));
	return MV_TRUE;
	}

	return MV_FALSE;
	}

	/*******************************************************************************
	* intelSecLock - Lock/Unlock a Sector in the flash for Writing.
	*
	* DESCRIPTION:
	* Lock/Unlock a Sector in the flash for Writing.
	*
	* INPUT:
	* pFlash - Flash identifier structure.
	* secNum - Sector Number.
	* enable - MV_TRUE for Lock MV_FALSE for un-lock.
	*
	* OUTPUT:
	* None
	*
	* RETURN:
	* MV_OK if program completed successfully,
	* MV_TIMEOUT if timeout reached,
	* MV_FAIL otherwise.
	*
	*******************************************************************************/
	MV_STATUS intelFlashSecLock(MV_FLASH_INFO *pFlash, MV_U32 secNum, MV_BOOL enable)
	{
	MV_U32 status, intelLockEna, i, flashStatus;

	status = MV_ERROR;

	DB(mvOsPrintf("Flash: intelSecLock"));

	/* lock */
	if (enable == MV_TRUE) {
	DB(mvOsPrintf("Flash: intelSecLock Lock sector %d \n", secNum));
	intelLockEna = INTEL_CHIP_CMD_SET_LOCK_BLK;
	} else { /* unlock */
	DB(mvOsPrintf("Flash: intelSecLock Unlock sector %d \n", secNum));
	intelLockEna = INTEL_CHIP_CMD_CLR_LOCK_BLK;
	}

	/* clear status */
	intelFlashStatusClr(pFlash);

	/* Un/lock sequence */
	flashCmdSet(pFlash, 0, 0, INTEL_CHIP_CMD_LOCK);
	flashCmdSet(pFlash, 0, secNum, intelLockEna);

	/* wait for write to complete */
	for (i = 0; i < INTEL_LOCK_MILI_TIMEOUT; i++) {
	mvOsDelay(1);
	status = intelFlashStsGet(pFlash, 0, MV_TRUE, &flashStatus);
	if (status != MV_NOT_READY)
	break;
	}
	/* if timeout */
	if (i >= INTEL_LOCK_MILI_TIMEOUT) {
	mvOsPrintf("Flash: ERROR intelSecLock timeout \n");
	return MV_TIMEOUT;
	}
	/* if completed successfully */
	if (MV_OK == status) {
	/* Unprotect one sector, which means unprotect all flash
	* and reprotect the other protected sectors.
	*/
	if (enable == MV_FALSE) {
	for (i = 0; i < mvFlashNumOfSecsGet(pFlash); i++)
	if ((i != secNum) && (MV_TRUE == mvFlashSecLockGet(pFlash, i)))
	if (MV_OK != intelFlashSecLock(pFlash, i, MV_TRUE))
	return MV_FAIL;
	}
	return MV_OK;
	}
	/* otherwise FAIL */
	return MV_FAIL;
	}

	/*******************************************************************************
	* Check the Flash Status and return:
	* MV_OK if status is ready and there isn't any error.
	* MV_FAIL if status is ready and there is an error.
	* MV_NOT_READY if status isn't ready.
	*******************************************************************************/
	static MV_STATUS intelFlashStsGet(MV_FLASH_INFO pFlash, MV_U32 sec, MV_BOOL enableReadCommand, MV_U32 flashStatus)
	{
	MV_U32 status;

	if (enableReadCommand)
	flashCmdSet(pFlash, 0, 0, INTEL_CHIP_CMD_RD_STAT);
	status = flashBusWidthRd(pFlash, pFlash->baseAddr + mvFlashSecOffsGet(pFlash, sec));

	*flashStatus = status;

	if ((status & flashDataExt(pFlash, INTEL_CHIP_STAT_RDY)) == flashDataExt(pFlash, INTEL_CHIP_STAT_RDY)) {
	DB(mvOsPrintf("Flash: intelFlashStatusChk value is ready \n"));
	if ((status & flashDataExt(pFlash, INTEL_CHIP_STAT_ERR)) != 0) {
	mvOsPrintf("Flash: intelFlashStatusChk value has ERROR %x \n", status);
	return MV_FAIL;
	}
	return MV_OK;
	}

	DB(mvOsPrintf("Flash: intelFlashStatusChk staus is %x and should %x \n",
	status, flashDataExt(pFlash, INTEL_CHIP_STAT_RDY)));
	return MV_NOT_READY;
	}

	/*******************************************************************************
	* Clear the Flash Status.
	*******************************************************************************/
	static MV_VOID intelFlashStatusClr(MV_FLASH_INFO *pFlash)
	{
	flashCmdSet(pFlash, 0, 0, INTEL_CHIP_CMD_CLR_STAT);
	return;
	}