arch/arm/plat-feroceon/mv_hal/mflash/mvPMFlash.c

/*******************************************************************************
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*******************************************************************************/
#include "mflash/mvMFlash.h"
#include "mflash/mvMFlashSpec.h"
#include "mflash/mvPMFlash.h"
#include "mflash/mvPMFlashSpec.h"
#include "ctrlEnv/mvCtrlEnvLib.h" 

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

/* MACROS */

/* Static Functions */
static MV_STATUS waitOnCmdDone              (MV_VOID);
static MV_STATUS waitOnEraseBitClear        (MV_VOID);
static MV_STATUS waitOnInfReadBitClear      (MV_VOID);
static MV_STATUS mvPMFlashReadSR            (MV_U8 * pStatusReg);
static MV_STATUS mvPMFlashReadRegSeq        (MV_U32 prgCmnd, MV_U8 * pStatusReg);
static MV_STATUS mvPMFlashWriteRegSeq       (MV_U32 prgCmnd, MV_U32 reg);
static MV_STATUS mvPMFlashProgSeq           (MV_MFLASH_INFO *pFlash, MV_U32 prgCmnd, MV_U32 offset, MV_U8 *pBlock);
static MV_STATUS mvPMFlashEraseSeq          (MV_MFLASH_INFO *pFlash, MV_U32 eraseCmnd);
static MV_STATUS mvPMFlashIndirectReadSeq   (MV_MFLASH_INFO *pFlash, MV_U32 readCmnd, MV_U8* p8Bytes);

/*******************************************************************************
* waitOnCmdDone - Wait for command done bit
*
* DESCRIPTION:
*       Block waiting for command done. Returns Error Status
*
********************************************************************************/
static MV_STATUS waitOnCmdDone(MV_VOID)
{
	MV_U32 i;
	/* loop over waiting for the command done bit to be set */
	for (i=0; i<MV_MFLASH_MAX_CMD_DONE_LOOP; i++)
		if (MV_REG_READ(MV_PMFLASH_IF_STATUS_REG) & MV_PMFLASH_CMD_DONE_MASK)
			return MV_OK;

    DB(mvOsPrintf("%s WARNING: Command Timeout!\n", __FUNCTION__);)
	return MV_TIMEOUT;
}

/*******************************************************************************
* waitOnEraseBitClear - Wait for erase bit to be cleared by H/W
*
* DESCRIPTION:
*       Block waiting for erase bit (bit13 in Flash command opcode register)
*		to be cleared by hardware as an indication that the command was accepted.
*
********************************************************************************/
static MV_STATUS waitOnEraseBitClear(MV_VOID)
{
	MV_U32 i;
	/* loop over waiting for the command done bit to be set */
	for (i=0; i<MV_MFLASH_MAX_CMD_DONE_LOOP; i++)
		if ((MV_REG_READ(MV_PMFLASH_CMD_OPCODE_REG) & MV_PMFLASH_ERASE_STRT_MASK) == 0)
			return MV_OK;

    DB(mvOsPrintf("%s WARNING: Command Timeout!\n", __FUNCTION__);)
	return MV_TIMEOUT;
}

/*******************************************************************************
* waitOnRdStatusBitClear - Wait for Read status bit to be cleared by H/W
*
* DESCRIPTION:
*       Block waiting for Read bit (bit14 in Flash command opcode register)
*		to be cleared by hardware as an indication that the command was executed.
*
********************************************************************************/
static MV_STATUS waitOnRdStatusBitClear(MV_VOID)
{
	MV_U32 i;
	/* loop over waiting for the command done bit to be set */
	for (i=0; i<MV_MFLASH_MAX_CMD_DONE_LOOP; i++)
		if ((MV_REG_READ(MV_PMFLASH_CMD_OPCODE_REG) & MV_PMFLASH_RDSR_SET_MASK) == 0)
			return MV_OK;

    DB(mvOsPrintf("%s WARNING: Command Timeout!\n", __FUNCTION__);)
	return MV_TIMEOUT;
}

/*******************************************************************************
* waitOnInfReadBitClear - Wait for Information Read bit to be cleared by H/W
*
* DESCRIPTION:
*       Block waiting for IREAD (bit15 in Flash command opcode register)
*		to be cleared by hardware as an indication that the requested 8bytes
*		are ready to be ready by s/w.
*
********************************************************************************/
static MV_STATUS waitOnInfReadBitClear(MV_VOID)
{
	MV_U32 i;
	/* loop over waiting for the command done bit to be set */
	for (i=0; i<MV_MFLASH_MAX_CMD_DONE_LOOP; i++)
		if ((MV_REG_READ(MV_PMFLASH_CMD_OPCODE_REG) & MV_PMFLASH_INF_READ_STRT_MASK) == 0)
			return MV_OK;

    DB(mvOsPrintf("%s WARNING: Command Timeout!\n", __FUNCTION__);)
	return MV_TIMEOUT;
}

/*******************************************************************************
* mvPMFlashReadRegSeq - Read internal register of the MFLASH
*
* DESCRIPTION:
*       Perform the Read internal register RAB
*
********************************************************************************/
static MV_STATUS mvPMFlashReadRegSeq(MV_U32 prgCmnd, MV_U8 * pStatusReg)
{	
	MV_U32 temp;
    MV_STATUS ret;

	/* set commnand opcode = RDSR */
	temp = MV_REG_READ(MV_PMFLASH_CMD_OPCODE_REG);
	temp = ((temp & ~MV_PMFLASH_CMD_OPCD_MASK) | prgCmnd | MV_PMFLASH_EAD9_8_MASK);
	MV_REG_WRITE(MV_PMFLASH_CMD_OPCODE_REG, temp);

	/* trigger the operation */
	MV_REG_BIT_SET(MV_PMFLASH_CMD_OPCODE_REG, MV_PMFLASH_RDSR_SET_MASK);	

	/* wait on the read status bit to be cleared */
	if ((ret = waitOnRdStatusBitClear()) != MV_OK)
		return ret;

	/* wait for command done bit - this is supposed to be immediate */
	if ((ret = waitOnCmdDone()) != MV_OK)
		return ret;

	/* read the satus register */
	*pStatusReg = (MV_REG_READ(MV_PMFLASH_STATUS_REG) & MV_PMFLASH_STATUS_MASK);
	
	return MV_OK;
}

/*******************************************************************************
* mvPMFlashWriteRegSeq - Write internal register of the MFLASH
*
* DESCRIPTION:
*       Perform the write internal register RAB
*
********************************************************************************/
static MV_STATUS mvPMFlashWriteRegSeq(MV_U32 prgCmnd, MV_U32 reg)
{	
    MV_STATUS ret;
	MV_U32 temp;

	/* set data to be written in the address low register */
	MV_REG_WRITE(MV_PMFLASH_ADDR_LOW_REG, (reg & 0xFFFF));

	/* set commnand opcode = prgCmnd */
	temp = MV_REG_READ(MV_PMFLASH_CMD_OPCODE_REG);
	temp = ((temp & ~MV_PMFLASH_CMD_OPCD_MASK) | prgCmnd | MV_PMFLASH_EAD9_8_MASK);
	MV_REG_WRITE(MV_PMFLASH_CMD_OPCODE_REG, temp);

	/* trigger the operation */
	MV_REG_BIT_SET(MV_PMFLASH_CMD_OPCODE_REG, MV_PMFLASH_ERASE_STRT_MASK);	

	/* wait for erase bit to be cleared */
	if ((ret = waitOnEraseBitClear()) != MV_OK)
		return ret;
	
	return MV_OK;
}

/*******************************************************************************
* mvPMFlashReadSR - Read the Status register
*
* DESCRIPTION:
*       Perform the Read status register RAB
*
********************************************************************************/
static MV_STATUS mvPMFlashReadSR(MV_U8 * pStatusReg)
{	
	return mvPMFlashReadRegSeq(MV_PMFLASH_OPCD_RDSR, pStatusReg);
}

/*******************************************************************************
* mvPMFlashProgSeq - Perform the program sequence for the MFLASH
*
* DESCRIPTION:
*       program a 64 byte block (with or without compare after program) on 
*		both the main and information regions of the flash.
*
********************************************************************************/
static MV_STATUS mvPMFlashProgSeq(MV_MFLASH_INFO *pFlash, MV_U32 prgCmnd, MV_U32 offset, 
                                  MV_U8 *pBlock)
{
	MV_U32 i;
	MV_U16 * pBuff;
	MV_U8 status;
	MV_U32 temp;
    MV_STATUS ret;

	/* check that the programming offset is alligned according to requirement */
	if (offset & MV_MFLASH_PROG_ALIGN_MASK)
    {
        DB(mvOsPrintf("%s WARNING: Programming allignment problem!\n", __FUNCTION__);)
		return MV_NOT_ALIGNED;
    }

	/* Set the flash address low */
	MV_REG_WRITE(MV_PMFLASH_ADDR_LOW_REG, (offset & 0xFFFF));

	/* set the flash address high */
	MV_REG_WRITE(MV_PMFLASH_ADDR_HI_REG, ((offset >> 16) & 0xFFFF));

	/* set commnand opcode = prgCmnd */
	temp = MV_REG_READ(MV_PMFLASH_CMD_OPCODE_REG);
	temp = ((temp & ~MV_PMFLASH_CMD_OPCD_MASK) | prgCmnd | MV_PMFLASH_EAD9_8_MASK);
	MV_REG_WRITE(MV_PMFLASH_CMD_OPCODE_REG, temp);

	/* start the programming operation - set bit 12 to 1 */
	MV_REG_BIT_SET(MV_PMFLASH_CMD_OPCODE_REG, MV_PMFLASH_WR_OPER_STRT_MASK);	

	/* serialize the whole 64 byte buffer */
	pBuff = (MV_U16*)pBlock;
	for (i=0; i<MV_PMFLASH_PROG_WORDS_PER_CHUNK; i++)
	{
		MV_REG_WRITE(MV_PMFLASH_DATA_REG, MV_16BIT_LE(*pBuff));
		pBuff++;
	}

	/* stop the programming operation - set bit 12 to 0 */
	MV_REG_BIT_RESET(MV_PMFLASH_CMD_OPCODE_REG, MV_PMFLASH_WR_OPER_STRT_MASK);	

	for (i=0; i<MV_MFLASH_MAX_PRG_LOOP; i++)
	{
		if ((ret = mvPMFlashReadSR(&status)) != MV_OK)
			return ret;

		/* check the WIP bit if cleared (indicating end of programming) */
		if ((status & MV_PMFLASH_STAT_WIP_MASK) == 0)
			return MV_OK;
	}

    DB(mvOsPrintf("%s WARNING: Command Timeout!\n", __FUNCTION__);)
	return MV_TIMEOUT;
}

/*******************************************************************************
* mvPMFlashEraseSeq - Perform the erase sequence for the MFLASH
*
* DESCRIPTION:
*       Erase a complete region in the MFlash (Main, Information or the 
*		whole flash).
*
********************************************************************************/
static MV_STATUS mvPMFlashEraseSeq(MV_MFLASH_INFO *pFlash, MV_U32 eraseCmnd)
{
	MV_U32 i;
	MV_U8 status;
	MV_U32 temp;
    MV_STATUS ret;

	/* set commnand opcode = prgCmnd */
	temp = MV_REG_READ(MV_PMFLASH_CMD_OPCODE_REG);
	temp = ((temp & ~MV_PMFLASH_CMD_OPCD_MASK) | eraseCmnd | MV_PMFLASH_EAD9_8_MASK);
	MV_REG_WRITE(MV_PMFLASH_CMD_OPCODE_REG, temp);

	/* Trigger the erase operation - set bit 13 to 1 */
	MV_REG_BIT_SET(MV_PMFLASH_CMD_OPCODE_REG, MV_PMFLASH_ERASE_STRT_MASK);	

	/* wait for the command to be sent to the device */
	if ((ret = waitOnEraseBitClear()) != MV_OK)
		return ret;

	/* wait for the erase command to be completed */
	for (i=0; i<MV_MFLASH_MAX_PRG_LOOP; i++)
	{
		/* read the Status register */
		if ((ret = mvPMFlashReadSR(&status)) != MV_OK)
			return ret;

		/* check the WIP bit if cleared (indicating end of programming) */
		if ((status & MV_PMFLASH_STAT_WIP_MASK) == 0)
			return MV_OK;
	}

    DB(mvOsPrintf("%s WARNING: Command Timeout!\n", __FUNCTION__);)
	return MV_TIMEOUT;
}

/*******************************************************************************
* mvPMFlashIndirectReadSeq - Perform the Information READ sequence
*
* DESCRIPTION:
*       Read indirectly from the FLASH information region
*
********************************************************************************/
static MV_STATUS mvPMFlashIndirectReadSeq(MV_MFLASH_INFO *pFlash, MV_U32 readCmnd, MV_U8* p8Bytes)
{
	MV_U32 i;
	MV_U16 * dataPrt = (MV_U16*)p8Bytes;
	MV_U32 temp;
    MV_STATUS ret;

	/* set commnand opcode = prgCmnd */
	temp = MV_REG_READ(MV_PMFLASH_CMD_OPCODE_REG);
	temp = ((temp & ~MV_PMFLASH_CMD_OPCD_MASK) | readCmnd | MV_PMFLASH_EAD9_8_MASK);
	MV_REG_WRITE(MV_PMFLASH_CMD_OPCODE_REG, temp);

	/* Trigger the erase operation - set bit 13 to 1 */
	MV_REG_BIT_SET(MV_PMFLASH_CMD_OPCODE_REG, MV_PMFLASH_INF_READ_STRT_MASK);
	
	/* block waiting for bit to be cleared by hardware */
	if ((ret = waitOnInfReadBitClear()) != MV_OK)
		return ret;

	/* read the 8bytes from the Data register into the buffer in 4 iterations */
	for (i=0; i<4; i++)
	{
		*dataPrt = MV_REG_READ(MV_PMFLASH_DATA_REG);
		dataPrt++;
	}

	return MV_OK;
}

/*
#####################################################################################
#####################################################################################
*/

/*******************************************************************************
* mvPMFlashInit - Perform basic initialize for the MFlash device in paralle mode
*
* DESCRIPTION:
*       This function performs the necessary initialization for a Marvell 
*       Sunol flash.
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*
* OUTPUT:
*       None.
*
* RETURN:
*       Success or Error code.
*       
*
*******************************************************************************/
MV_STATUS mvPMFlashInit (MV_MFLASH_INFO *pFlash)
{
    MV_STATUS ret;

    /* Check for null pointer */
    if (pFlash == NULL)
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	/* set the static timing parameters */
	if ((ret = mvPMFlashSetConfig1(pFlash, ((MV_PMFLASH_T2 << 4) | MV_PMFLASH_T1))) != MV_OK)
        return ret;

	if ((ret = mvPMFlashSetConfig3(pFlash, MV_PMFLASH_T7)) != MV_OK)
        return ret;

	if ((ret = mvPMFlashSetSlewRate(pFlash, ((MV_PMFLASH_PCLK_OUT << 4) | 
		                         (MV_PMFLASH_SLEW_2_3 << 2) | 
						          MV_PMFLASH_SLEW_0_1))) != MV_OK)
        return ret;

	return MV_OK;
}

/*******************************************************************************
* mvPMFlash64bWr - Program (no Verify) main flash data
*
* DESCRIPTION:
*       Program an alligned 64byte block in the main flash region of the MFlash
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		offset: offset within the Information region (limited to 1024)
*		pBlock: pointer to the 64 bytes buffer to be programed
*
* OUTPUT:
*       None.
*
* RETURN:
*       Success or Error code.
*       
*
*******************************************************************************/
MV_STATUS mvPMFlash64bWr (MV_MFLASH_INFO *pFlash, MV_U32 offset, MV_U8 *pBlock)
{
    /* Check for null pointer */
#ifndef CONFIG_MARVELL
    if(NULL == pBlock)
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }
#endif

    if (pFlash == NULL)
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	return mvPMFlashProgSeq(pFlash, MV_PMFLASH_OPCD_PROGRAM, offset, pBlock);
}

/*******************************************************************************
* mvPMFlash64bWrVerify - Program and Verify Main flash data
*
* DESCRIPTION:
*       Program and Verify a 64byte alligned block in the main region of the 
*       MFlash
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		offset: offset within the main region
*		pBlock: pointer to the 64 bytes buffer to be programed
*
* OUTPUT:
*       None.
*
* RETURN:
*       Success or Error code.
*       
*
*******************************************************************************/
MV_STATUS mvPMFlash64bWrVerify (MV_MFLASH_INFO *pFlash, MV_U32 offset, MV_U8 *pBlock)
{
    MV_STATUS ret;
    MV_U8 status;

    /* Check for null pointer */
#ifndef CONFIG_MARVELL
    if(NULL == pBlock)
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }
#endif

    if (pFlash == NULL)
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

    /* Perform the program sequence */
	if ((ret = mvPMFlashProgSeq(pFlash, MV_PMFLASH_OPCD_PRG_CMP, offset, pBlock)) != MV_OK)
        return ret;

    /* Read the status register */
	if ((ret = mvPMFlashReadSR(&status)) != MV_OK)
		return ret;

	/* check the result of the compare operartion */
	if (status & MV_PMFLASH_STAT_CMP_MASK)
    {
        DB(mvOsPrintf("%s WARNING: Compare after write Failed!\n", __FUNCTION__);)
		return MV_FAIL;
    }

    return MV_OK;
}

/*******************************************************************************
* mvPMFlash64bInfWr - Program (no Verify) Information data
*
* DESCRIPTION:
*       Program a 64byte alligned block in the information region of the 
*       MFlash - Offset is limited to 1024
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		offset: offset within the Information region (limited to 1024)
*		pBlock: pointer to the 64 bytes buffer to be programed
*
* OUTPUT:
*       None.
*
* RETURN:
*       Success or Error code.
*       
*
*******************************************************************************/
MV_STATUS mvPMFlash64bInfWr (MV_MFLASH_INFO *pFlash, MV_U32 offset, MV_U8 *pBlock)
{
    /* Check for null pointer */
    if ((pFlash == NULL) || (pBlock == NULL))
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	return mvPMFlashProgSeq(pFlash, MV_PMFLASH_OPCD_IPROGRAM, offset, pBlock);
}

/*******************************************************************************
* mvPMFlash64bInfWrVerify - Program and Verify Information data
*
* DESCRIPTION:
*       Program and Verify a 64byte alligned block in the information region 
*       of the MFlash - Offset is limited to 1024
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		offset: offset within the Information region (limited to 1024)
*		pBlock: pointer to the 64 bytes buffer to be programed
*
* OUTPUT:
*       None.
*
* RETURN:
*       Success or Error code.
*       
*
*******************************************************************************/
MV_STATUS mvPMFlash64bInfWrVerify (MV_MFLASH_INFO *pFlash, MV_U32 offset, MV_U8 *pBlock)
{
	MV_STATUS ret;
    MV_U8 status;

    /* Check for null pointer */
    if ((pFlash == NULL) || (pBlock == NULL))
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

    /* Perform the program sequence */
	if ((ret = mvPMFlashProgSeq(pFlash, MV_PMFLASH_OPCD_IPRG_CMP, offset, pBlock)) != MV_OK)
        return ret;

    /* Read the status register */
	if ((ret = mvPMFlashReadSR(&status)) != MV_OK)
		return ret;

	/* check the result of the compare operartion */
	if (status & MV_PMFLASH_STAT_CMP_MASK)
    {
        DB(mvOsPrintf("%s WARNING: Compare after write Failed!\n", __FUNCTION__);)
		return MV_FAIL;
    }

    return MV_OK;
}

/*******************************************************************************
* mvPMFlashChipErase - Erase the whole flash
*
* DESCRIPTION:
*       Erase the whole flash (both the Main and Information region).
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*
* OUTPUT:
*       None.
*
* RETURN:
*       Success or Error code.
*       
*
*******************************************************************************/
MV_STATUS mvPMFlashChipErase (MV_MFLASH_INFO *pFlash)
{
    /* Check for null pointer */
    if (pFlash == NULL)
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	return mvPMFlashEraseSeq(pFlash, MV_PMFLASH_OPCD_CHIP_ERASE);
}

/*******************************************************************************
* mvPMFlashMainErase - Erase the main flash region only
*
* DESCRIPTION:
*       Erase the Main flash region only. The information region will not be
*       affected.
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*
* OUTPUT:
*       None.
*
* RETURN:
*       Success or Error code.
*       
*
*******************************************************************************/
MV_STATUS mvPMFlashMainErase (MV_MFLASH_INFO *pFlash)
{
    /* Check for null pointer */
    if (pFlash == NULL)
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	return mvPMFlashEraseSeq(pFlash, MV_PMFLASH_OPCD_MAIN_ERASE);
}

/*******************************************************************************
* mvPMFlashInfErase - Erase the information flash region only
*
* DESCRIPTION:
*       Erase the information flash region. The main flash region will not be
*       affected.
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*
* OUTPUT:
*       None.
*
* RETURN:
*       Success or Error code.
*       
*
*******************************************************************************/
MV_STATUS mvPMFlashInfErase (MV_MFLASH_INFO *pFlash)
{
    /* Check for null pointer */
    if (pFlash == NULL)
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	return mvPMFlashEraseSeq(pFlash, MV_PMFLASH_OPCD_IPAGE_ERASE);
}


/*******************************************************************************
* mvPMFlashSecErase - Erase the single sector of the main flash region 
*
* DESCRIPTION:
*       Erase one sector of the main flash region
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		secNumber: sector number to erase
*
* OUTPUT:
*       None.
*
* RETURN:
*       Success or Error code.
*       
*
*******************************************************************************/
MV_STATUS mvPMFlashSecErase (MV_MFLASH_INFO *pFlash, MV_U32 secNumber)
{
    /* Check for null pointer */
    if (pFlash == NULL)
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	/* set the sector address in the flash address low */
	MV_REG_WRITE(MV_PMFLASH_ADDR_LOW_REG, (secNumber & 0xFFFF));

	/* Perform the erase sequence*/
	return mvPMFlashEraseSeq(pFlash, MV_PMFLASH_OPCD_PAGE_ERASE);
}


/*******************************************************************************
* mvPMFlashBlockRd - Read a block of Memory from the Main Flash 
*
* DESCRIPTION:
*       Read a block of Memory from the Main Flash 
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		offset: offset to read from the main region of the MFlash
*		blockSize: number of bytes to read from the offset
*
* OUTPUT:
*		pBlock: pointer of the buffer to fill
*
* RETURN:
*       Success or Error code.
*       
*
*******************************************************************************/
MV_STATUS mvPMFlashBlockRd (MV_MFLASH_INFO *pFlash, MV_U32 offset, MV_U32 blockSize, 
                            MV_U8 *pBlock)
{
    /* Check for null pointer */
    if ((pFlash == NULL) || (pBlock == NULL))
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	/* check that requested data is in the region */
    if ((offset + blockSize) > (pFlash->sectorNumber * pFlash->sectorSize))
    {
        DB(mvOsPrintf("%s WARNING: Read allignment problem!\n", __FUNCTION__);)
        return MV_BAD_PARAM;
    }
	
    /* Read using direct access */
	mvOsMemcpy(pBlock, (MV_VOID*)(pFlash->baseAddr + offset), blockSize);

	return MV_OK;
}

/*******************************************************************************
* mvPMFlashBlockInfRd - Read a block of Memory from the Information region 
*
* DESCRIPTION:
*       Read a block of Memory from the information region
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		offset: offset to read from the main region of the MFlash
*		blockSize: number of bytes to read from the offset
*
* OUTPUT:
*		pBlock: pointer of the buffer to fill
*
* RETURN:
*       Success or Error code.
*       
*
*******************************************************************************/
MV_STATUS mvPMFlashBlockInfRd (MV_MFLASH_INFO *pFlash, MV_U32 offset, MV_U32 blockSize, 
                               MV_U8 *pBlock)
{
    MV_STATUS ret;
	MV_U8 tempBuff[MV_PMFLASH_IREAD_CHUNK_SIZE];
	MV_U32 data2read	= blockSize;
	MV_U32 preAllOfst	= (offset & MV_PMFLASH_IREAD_ALIGN_MASK);
    MV_U32 preAllSz		= (preAllOfst ? (MV_PMFLASH_IREAD_CHUNK_SIZE - preAllOfst) : 0);	
	MV_U32 readOffset	= (offset & ~MV_PMFLASH_IREAD_ALIGN_MASK);

    /* Check for null pointer */
    if ((pFlash == NULL) || (pBlock == NULL))
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	/* sanity check on sizes and offsets based on chip model */
    if ((offset + blockSize) > pFlash->infoSize)
    {
        DB(mvOsPrintf("%s WARNING: Read exceeds flash size!\n", __FUNCTION__);)
        return MV_BAD_PARAM;
    }

	/* set the ADDDRESS HI to zero - since only the low address is needed */
	MV_REG_WRITE(MV_PMFLASH_ADDR_HI_REG, 0); /* only low address is needed */

	/* check if the total block size is less than the first chunk remainder */
	if (data2read < preAllSz)
		preAllSz = data2read;

	/* Check if read offset is not alligned to 8bytes; then perform a read alligned 
	   to 8 bytes and copy only the necessary data */
	if (preAllOfst)
	{
		/* set the read offset address in the flash address Low */
		MV_REG_WRITE(MV_PMFLASH_ADDR_LOW_REG, readOffset);
		if ((ret = mvPMFlashIndirectReadSeq(pFlash, MV_PMFLASH_OPCD_IREAD, tempBuff)) != MV_OK)
			return ret;

		/* copy to the buffer only the needed data */
		mvOsMemcpy (pBlock, &tempBuff[preAllOfst], preAllSz);

		/* increment the pointers and offsets */
		data2read -= preAllSz;
		readOffset += MV_PMFLASH_IREAD_CHUNK_SIZE;
		pBlock += preAllSz;
	}

	/* perform all reads that are alligned to 8bytes and full 8bytes */
	while (data2read >= MV_PMFLASH_IREAD_CHUNK_SIZE)
	{
		/* set the read offset address in the flash address Low */
		MV_REG_WRITE(MV_PMFLASH_ADDR_LOW_REG, readOffset);
		if ((ret = mvPMFlashIndirectReadSeq(pFlash, MV_PMFLASH_OPCD_IREAD, pBlock)) != MV_OK)
			return ret;

		/* increment the pointers and offsets */
		data2read -= MV_PMFLASH_IREAD_CHUNK_SIZE;
		readOffset += MV_PMFLASH_IREAD_CHUNK_SIZE;
		pBlock += MV_PMFLASH_IREAD_CHUNK_SIZE;
	}
	
	/* check if we need to perform a partial read at the end */
	if (data2read)
	{
		/* set the read offset address in the flash address Low */
		MV_REG_WRITE(MV_PMFLASH_ADDR_LOW_REG, readOffset);
		if ((ret = mvPMFlashIndirectReadSeq(pFlash, MV_PMFLASH_OPCD_IREAD, tempBuff)) != MV_OK)
			return ret;
		
		/* copy to the buffer only the needed data */
		mvOsMemcpy (pBlock, tempBuff, data2read);
	}

	return MV_OK;
}

/*******************************************************************************
* mvPMFlashReadConfig1 - Read the Configuration register
*
* DESCRIPTION:
*       Perform the Read CONFIG1 register RAB
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		pConfigReg: pointer to the variable to fill
*
* OUTPUT:
*       pConfigReg: pointer to the variable holding the register value
*
* RETURN:
*       Success or Error code.
*       
********************************************************************************/
MV_STATUS mvPMFlashReadConfig1(MV_MFLASH_INFO *pFlash, MV_U8 * pConfigReg)
{	
    if ((pFlash == NULL) || (pConfigReg == NULL))
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	return mvPMFlashReadRegSeq(MV_PMFLASH_OPCD_READ_CFG1, pConfigReg);
}

/*******************************************************************************
* mvPMFlashReadConfig2 - Read the Configuration register
*
* DESCRIPTION:
*       Perform the Read CONFIG2 register RAB
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		pConfigReg: pointer to the variable to fill
*
* OUTPUT:
*       pConfigReg: pointer to the variable holding the register value
*
* RETURN:
*       Success or Error code.
*       
********************************************************************************/
MV_STATUS mvPMFlashReadConfig2(MV_MFLASH_INFO *pFlash, MV_U8 * pConfigReg)
{	
	if ((pFlash == NULL) || (pConfigReg == NULL))
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	return mvPMFlashReadRegSeq(MV_PMFLASH_OPCD_READ_CFG2, pConfigReg);
}

/*******************************************************************************
* mvPMFlashReadConfig3 - Read the Configuration register
*
* DESCRIPTION:
*       Perform the Read CONFIG3 register RAB
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		pConfigReg: pointer to the variable to fill
*
* OUTPUT:
*       pConfigReg: pointer to the variable holding the register value
*
* RETURN:
*       Success or Error code.
*       
********************************************************************************/
MV_STATUS mvPMFlashReadConfig3(MV_MFLASH_INFO *pFlash, MV_U8 * pConfigReg)
{	
	if ((pFlash == NULL) || (pConfigReg == NULL))
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	return mvPMFlashReadRegSeq(MV_PMFLASH_OPCD_READ_CFG3, pConfigReg);
}

/*******************************************************************************
* mvPMFlashReadConfig4 - Read the Configuration register
*
* DESCRIPTION:
*       Perform the Read CONFIG4 register RAB
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		pConfigReg: pointer to the variable to fill
*
* OUTPUT:
*       pConfigReg: pointer to the variable holding the register value
*
* RETURN:
*       Success or Error code.
*       
********************************************************************************/
MV_STATUS mvPMFlashReadConfig4(MV_MFLASH_INFO *pFlash, MV_U8 * pConfigReg)
{	
	if ((pFlash == NULL) || (pConfigReg == NULL))
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	return mvPMFlashReadRegSeq(MV_PMFLASH_OPCD_READ_CFG4, pConfigReg);
}

/*******************************************************************************
* mvPMFlashSetConfig1 - Write the Configuration register
*
* DESCRIPTION:
*       Perform the SET CONFIG1 register RAB
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		configReg: value to set in the configuration register
*
* OUTPUT:
*       None.
*
* RETURN:
*       Success or Error code.
*       
********************************************************************************/
MV_STATUS mvPMFlashSetConfig1(MV_MFLASH_INFO *pFlash, MV_U8 configReg)
{	
	if (pFlash == NULL)
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	return mvPMFlashWriteRegSeq(MV_PMFLASH_OPCD_SET_CFG1, configReg);
}

/*******************************************************************************
* mvPMFlashSetConfig2 - Write the Configuration register
*
* DESCRIPTION:
*       Perform the SET CONFIG2 register RAB
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		configReg: value to set in the configuration register
*
* OUTPUT:
*       None.
*
* RETURN:
*       Success or Error code.
*       
********************************************************************************/
MV_STATUS mvPMFlashSetConfig2(MV_MFLASH_INFO *pFlash, MV_U8 configReg)
{	
	if (pFlash == NULL)
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	return mvPMFlashWriteRegSeq(MV_PMFLASH_OPCD_SET_CFG2, configReg);
}

/*******************************************************************************
* mvPMFlashSetConfig3 - Write the Configuration register
*
* DESCRIPTION:
*       Perform the SET CONFIG3 register RAB
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		configReg: value to set in the configuration register
*
* OUTPUT:
*       None.
*
* RETURN:
*       Success or Error code.
*       
********************************************************************************/
MV_STATUS mvPMFlashSetConfig3(MV_MFLASH_INFO *pFlash, MV_U8 configReg)
{	
	if (pFlash == NULL)
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	return mvPMFlashWriteRegSeq(MV_PMFLASH_OPCD_SET_CFG3, configReg);
}

/*******************************************************************************
* mvPMFlashSetConfig4 - Write the Configuration register
*
* DESCRIPTION:
*       Perform the SET CONFIG4 register RAB
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		configReg: value to set in the configuration register
*
* OUTPUT:
*       None.
*
* RETURN:
*       Success or Error code.
*       
********************************************************************************/
MV_STATUS mvPMFlashSetConfig4(MV_MFLASH_INFO *pFlash, MV_U8 configReg)
{	
	if (pFlash == NULL)
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	return mvPMFlashWriteRegSeq(MV_PMFLASH_OPCD_SET_CFG4, configReg);
}
/*******************************************************************************
* mvPMFlashSetConfig4 - Write the Configuration register
*
* DESCRIPTION:
*       Perform the SET CONFIG4 register RAB
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		configReg: value to set in the configuration register
*
* OUTPUT:
*       None.
*
* RETURN:
*       Success or Error code.
*       
********************************************************************************/
MV_STATUS mvPMFlashSetSlewRate (MV_MFLASH_INFO *pFlash, MV_U8 configReg)
{
	if (pFlash == NULL)
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	return mvPMFlashWriteRegSeq(MV_PMFLASH_OPCD_SET_SLEW, configReg);
}

/*******************************************************************************
* mvPMFlashWriteProtectSet - Set the write protection feature status
*
* DESCRIPTION:
*       Enable or disable the write protection
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		wp: write protection status (enable = MV_TRUE, disable = MVFALSE)
*
* OUTPUT:
*       None.
*
* RETURN:
*       Success or Error code.
*       
*
*******************************************************************************/
MV_STATUS mvPMFlashWriteProtectSet (MV_MFLASH_INFO *pFlash, MV_BOOL wp)
{
    MV_STATUS ret;
	MV_U8 tempReg;

    if (pFlash == NULL)
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;	
    }

	/* Read the original value */
	if ((ret = mvPMFlashReadConfig4(pFlash, &tempReg)) != MV_OK)
    {
        DB(mvOsPrintf("%s WARNING: Failed to read Config register!\n", __FUNCTION__);)
		return ret;
    }

	/* set the WP bit */
	if (wp) /* write protect active hi */
		tempReg |= MV_PMFLASH_CFG4_WP_MASK;
	else
		tempReg &= ~MV_PMFLASH_CFG4_WP_MASK;

	/* write the new register value */
	if ((ret = mvPMFlashSetConfig4(pFlash, tempReg)) != MV_OK)
		return ret;

	return MV_OK;
}

/*******************************************************************************
* mvPMFlashWriteProtectGet - Get the write protection feature status
*
* DESCRIPTION:
*       Read from the h/w the write protection status
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		pWp: pointer to the variable to read in the write protection status
*
* OUTPUT:
*		pWp: pointer to the variable holding the write protection status
*
* RETURN:
*       Success or Error code.
*       
*
*******************************************************************************/
MV_STATUS mvPMFlashWriteProtectGet(MV_MFLASH_INFO *pFlash, MV_BOOL * pWp)
{
    MV_STATUS ret;
	MV_U8 tempReg;

    if (pFlash == NULL)
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;	
    }

	/* Read the original value */
	if ((ret = mvPMFlashReadConfig4(pFlash, &tempReg)) != MV_OK)
    {
        DB(mvOsPrintf("%s WARNING: Failed to read Config register!\n", __FUNCTION__);)
		return ret;
    }

	/* Read the WP bit */
	if (tempReg &= ~MV_PMFLASH_CFG4_WP_MASK)
        *pWp = MV_TRUE;
    else
        *pWp = MV_FALSE;

	return MV_OK;
}

/*******************************************************************************
* mvPMFlashSectorSizeSet - Set the sector size (4K or 32K)
*
* DESCRIPTION:
*       Set the sector size of the MFLASH main region
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		secSize: size of sector in bytes (either 4K or 32K)
*
* OUTPUT:
*       None.
*
* RETURN:
*       Success or Error code.
*       
*
*******************************************************************************/
MV_STATUS mvPMFlashSectorSizeSet (MV_MFLASH_INFO *pFlash, MV_U32 secSize)
{
    MV_STATUS ret;
	MV_U8 tempReg;

    if (pFlash == NULL)
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;	
    }

	/* Read the original value */
	if ((ret = mvPMFlashReadConfig4(pFlash, &tempReg)) != MV_OK)
		return ret;

	/* set the sector size bit */
	switch (secSize)
	{
		case MV_MFLASH_SECTOR_SIZE_SMALL:
			tempReg |= MV_PMFLASH_CFG4_PG_SZ_MASK;		/* 1 - 4K */
			break;

		case MV_MFLASH_SECTOR_SIZE_BIG:
			tempReg &= ~MV_PMFLASH_CFG4_PG_SZ_MASK;		/* 0 - 32K */
			break;

		default:
            DB(mvOsPrintf("%s WARNING: Invalid parameter sector size!\n", __FUNCTION__);)
			return MV_BAD_PARAM;
	}

	/* write the new register value */
	if ((ret = mvPMFlashSetConfig4(pFlash, tempReg)) != MV_OK)
		return ret;

	return MV_OK;
}


/*******************************************************************************
* mvPMFlashPrefetchSet - Set the Prefetch mode enable/disable
*
* DESCRIPTION:
*       Enable (MV_TRUE) or Disable (MV_FALSE) the prefetch mode
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*		prefetch: enable/disable (true/false)
*
* OUTPUT:
*       None.
*
* RETURN:
*       Success or Error code.
*       
*
*******************************************************************************/
MV_STATUS mvPMFlashPrefetchSet (MV_MFLASH_INFO *pFlash, MV_BOOL prefetch)
{
    MV_STATUS ret;
	MV_U8 tempReg;

	if (pFlash == NULL)
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	/* Read the original value */
	if ((ret = mvPMFlashReadConfig2(pFlash, &tempReg)) != MV_OK)
		return ret;

	/* set the prefetch enable bit */
	if (prefetch) 
		tempReg |= MV_PMFLASH_CFG2_PRFTCH_MASK;		/* prefetch mode active HI */
	else
		tempReg &= ~MV_PMFLASH_CFG2_PRFTCH_MASK;

	/* write the new register value */
	if ((ret = mvPMFlashSetConfig2(pFlash, tempReg)) != MV_OK)
		return ret;

	return MV_OK;
}

/*******************************************************************************
* mvPMFlashShutdownSet - Shutdown the voltage regulator in the flash device
*
* DESCRIPTION:
*       Causes the device to enter in a power save mode untill the next access 
*		to the flash.
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*
* OUTPUT:
*       None.
*
* RETURN:
*       Success or Error code.
*       
*
*******************************************************************************/
MV_STATUS mvPMFlashShutdownSet(MV_MFLASH_INFO *pFlash)
{
	if (pFlash == NULL)
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	return mvPMFlashEraseSeq(pFlash, MV_PMFLASH_OPCD_SHUTDOWN);	
}

/*******************************************************************************
* mvPMFlashIdGet - Retreive the MFlash manufacturer and device IDs
*
* DESCRIPTION:
*       Read from the Mflash the 32bit manufacturer ID and the 16bit devide Id.
*
* INPUT:
*       pFlash: Structure with Marvell Flash information
*       pManfCode: pointer to the 32bit to fill the manufacturer Id
*       pDevCode: pointer to the 16bit to fill the device Id
*
* OUTPUT:
*       pManfCode: pointer to the 32bit holding the manufacturer Id
*       pDevCode: pointer to the 16bit holding the device Id
*
* RETURN:
*       Success or Error code.
*       
*
*******************************************************************************/
MV_STATUS mvPMFlashIdGet (MV_MFLASH_INFO *pFlash, MV_U32 * pManfCode, MV_U16 * pDevCode)
{
	MV_U32 temp;	
    MV_STATUS ret;

	if ((pFlash == NULL) || (pManfCode == NULL) || (pDevCode == NULL))
    {
        mvOsPrintf("%s ERROR: Null pointer parameter!\n", __FUNCTION__);
        return MV_BAD_PARAM;
    }

	/* first confiure the Inf Read Data length = 3 (i.e 3*16bit = 6bytes)
	  This is because we need to read 6 bytes (4bytes Manuf. ID and 2 bytes Dev ID) */
	MV_REG_WRITE(MV_PMFLASH_IF_CTRL_REG, MV_PMFLASH_READ_ID_16BIT_COUNT);

	/* set commnand opcode = prgCmnd */
	temp = MV_REG_READ(MV_PMFLASH_CMD_OPCODE_REG);
	temp = ((temp & ~MV_PMFLASH_CMD_OPCD_MASK) | MV_PMFLASH_OPCD_READ_ID | MV_PMFLASH_EAD9_8_MASK);
	MV_REG_WRITE(MV_PMFLASH_CMD_OPCODE_REG, temp);

	/* Trigger the erase operation - set bit 13 to 1 */
	MV_REG_BIT_SET(MV_PMFLASH_CMD_OPCODE_REG, MV_PMFLASH_INF_READ_STRT_MASK);
	
	/* block waiting for bit to be cleared by hardware */
	if ((ret = waitOnInfReadBitClear()) != MV_OK)
		return ret;

	/* read the 6bytes from the Data register into the buffer in 3 iterations */
	/* First re-organize the Manufacturer ID */
	*pManfCode = 0;
	temp = MV_REG_READ(MV_PMFLASH_DATA_REG);		/* First 16bit */
	*pManfCode |= ((temp << 24) & 0xFF000000);
	*pManfCode |= ((temp << 8)  & 0x00FF0000);
	temp = MV_REG_READ(MV_PMFLASH_DATA_REG);		/* Second 16bit */
	*pManfCode |= ((temp << 8) & 0x0000FF00);
	*pManfCode |= ((temp >> 8) & 0x000000FF);

	/* Then re-organize the Device ID */
	*pDevCode = 0;
	temp = MV_REG_READ(MV_PMFLASH_DATA_REG);		/* Third 16bit */
	*pDevCode |= ((temp << 8) & 0x0000FF00);
	*pDevCode |= ((temp >> 8) & 0x000000FF);

	/* Set the word count back to the defualt for IREAD commands = 4*16bit */
	MV_REG_WRITE(MV_PMFLASH_IF_CTRL_REG, MV_PMFLASH_IREAD_16BIT_COUNT);

	return MV_OK;
}