target/generated by cgit v1.2.3 (git 2.25.1) at 2024-07-12 07:05:53 +0000

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/* includes */
#include "ddr1_2/mvDramIf.h"
#include "ctrlEnv/sys/mvCpuIf.h"


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

/* DRAM bank presence encoding */
#define BANK_PRESENT_CS0				0x1
#define BANK_PRESENT_CS0_CS1			0x3
#define BANK_PRESENT_CS0_CS2			0x5
#define BANK_PRESENT_CS0_CS1_CS2		0x7
#define BANK_PRESENT_CS0_CS2_CS3		0xd
#define BANK_PRESENT_CS0_CS2_CS3_CS4	0xf

/* locals   */
static MV_BOOL sdramIfWinOverlap(MV_TARGET target, MV_ADDR_WIN *pAddrWin);
#if defined(MV_INC_BOARD_DDIM)
static void sdramDDr2OdtConfig(MV_DRAM_BANK_INFO *pBankInfo);
static MV_U32 dunitCtrlLowRegCalc(MV_DRAM_BANK_INFO *pBankInfo, MV_U32 minCas);
static MV_U32 sdramModeRegCalc(MV_U32 minCas);
static MV_U32 sdramExtModeRegCalc(MV_DRAM_BANK_INFO *pBankInfo);
static MV_U32 sdramAddrCtrlRegCalc(MV_DRAM_BANK_INFO *pBankInfo);
static MV_U32 sdramConfigRegCalc(MV_DRAM_BANK_INFO *pBankInfo, MV_U32 busClk);
static MV_U32 minCasCalc(MV_DRAM_BANK_INFO *pBankInfo, MV_U32 busClk, 
						 MV_U32 forcedCl);
static MV_U32 sdramTimeCtrlLowRegCalc(MV_DRAM_BANK_INFO *pBankInfo, 
									  MV_U32 minCas, MV_U32 busClk);
static MV_U32 sdramTimeCtrlHighRegCalc(MV_DRAM_BANK_INFO *pBankInfo, 
									   MV_U32 busClk);

/*******************************************************************************
* mvDramIfDetect - Prepare DRAM interface configuration values.
*
* DESCRIPTION:
*       This function implements the full DRAM detection and timing 
*       configuration for best system performance.
*       Since this routine runs from a ROM device (Boot Flash), its stack 
*       resides on RAM, that might be the system DRAM. Changing DRAM 
*       configuration values while keeping vital data in DRAM is risky. That
*       is why the function does not preform the configuration setting but 
*       prepare those in predefined 32bit registers (in this case IDMA 
*       registers are used) for other routine to perform the settings.
*       The function will call for board DRAM SPD information for each DRAM 
*       chip select. The function will then analyze those SPD parameters of 
*       all DRAM banks in order to decide on DRAM configuration compatible 
*       for all DRAM banks.
*       The function will set the CPU DRAM address decode registers.
*       Note: This routine prepares values that will overide configuration of
*       mvDramBasicAsmInit().
*       
* INPUT:
*       forcedCl - Forced CAL Latency. If equal to zero, do not force.
*
* OUTPUT:
*       None.
*
* RETURN:
*       None.
*
*******************************************************************************/
MV_STATUS mvDramIfDetect(MV_U32 forcedCl)
{
	MV_U32 retVal = MV_OK;	/* return value */
	MV_DRAM_BANK_INFO bankInfo[MV_DRAM_MAX_CS];
	MV_U32  busClk, size, base = 0, i, temp, deviceW, dimmW;
	MV_U8	minCas;
	MV_DRAM_DEC_WIN dramDecWin;

	dramDecWin.addrWin.baseHigh = 0;

	busClk = mvBoardSysClkGet();
	
	if (0 == busClk)
	{
		mvOsPrintf("Dram: ERR. Can't detect system clock! \n");
		return MV_ERROR;
	}
	
	/* Close DRAM banks except bank 0 (in case code is excecuting from it...) */
#if defined(MV_INCLUDE_SDRAM_CS1)
	for(i= SDRAM_CS1; i < MV_DRAM_MAX_CS; i++)
		mvCpuIfTargetWinEnable(i, MV_FALSE);
#endif

	/* we will use bank 0 as the representative of the all the DRAM banks,  */
	/* since bank 0 must exist.                                             */	
	for(i = 0; i < MV_DRAM_MAX_CS; i++)
	{ 
		/* if Bank exist */
		if(MV_OK == mvDramBankInfoGet(i, &bankInfo[i]))
		{
			/* check it isn't SDRAM */
			if(bankInfo[i].memoryType == MEM_TYPE_SDRAM)
			{
				mvOsPrintf("Dram: ERR. SDRAM type not supported !!!\n");
				return MV_ERROR;
			}
			/* All banks must support registry in order to activate it */
			if(bankInfo[i].registeredAddrAndControlInputs != 
			   bankInfo[0].registeredAddrAndControlInputs)
			{
				mvOsPrintf("Dram: ERR. different Registered settings !!!\n");
				return MV_ERROR;
			}

			/* Init the CPU window decode */
			/* Note that the size in Bank info is in MB units 			*/
			/* Note that the Dimm width might be different then the device DRAM width */
			temp = MV_REG_READ(SDRAM_CONFIG_REG);
			
			deviceW = ((temp & SDRAM_DWIDTH_MASK) == SDRAM_DWIDTH_16BIT )? 16 : 32;
			dimmW = bankInfo[0].dataWidth - (bankInfo[0].dataWidth % 16);
			size = ((bankInfo[i].size << 20) / (dimmW/deviceW)); 

			/* We can not change DRAM window settings while excecuting  	*/
			/* code from it. That is why we skip the DRAM CS[0], saving     */
			/* it to the ROM configuration routine	*/
			if(i == SDRAM_CS0)
			{
				MV_U32 sizeToReg;
				
				/* Translate the given window size to register format */
				sizeToReg = ctrlSizeToReg(size, SCSR_SIZE_ALIGNMENT);

				/* Size parameter validity check. */
				if (-1 == sizeToReg)
				{
					mvOsPrintf("mvCtrlAddrDecToReg: ERR. Win %d size invalid.\n"
							   ,i);
					return MV_BAD_PARAM;
				}
                
				/* Size is located at upper 16 bits */
				sizeToReg <<= SCSR_SIZE_OFFS;

				/* enable it */
				sizeToReg |= SCSR_WIN_EN;

				MV_REG_WRITE(DRAM_BUF_REG0, sizeToReg);
			}
			else
			{
				dramDecWin.addrWin.baseLow = base;
				dramDecWin.addrWin.size = size;
				dramDecWin.enable = MV_TRUE;
				
				if (MV_OK != mvDramIfWinSet(SDRAM_CS0 + i, &dramDecWin))
				{
					mvOsPrintf("Dram: ERR. Fail to set bank %d!!!\n", 
							   SDRAM_CS0 + i);
					return MV_ERROR;
				}
			}
			
			base += size;

			/* update the suportedCasLatencies mask */
			bankInfo[0].suportedCasLatencies &= bankInfo[i].suportedCasLatencies;

		}
		else
		{
			if( i == 0 ) /* bank 0 doesn't exist */
			{
				mvOsPrintf("Dram: ERR. Fail to detect bank 0 !!!\n");
				return MV_ERROR;
			}
			else
			{
				DB(mvOsPrintf("Dram: Could not find bank %d\n", i));
				bankInfo[i].size = 0;     /* Mark this bank as non exist */
			}
		}
	}

	/* calculate minimum CAS */
	minCas = minCasCalc(&bankInfo[0], busClk, forcedCl);
	if (0 == minCas) 
	{
		mvOsOutput("Dram: Warn: Could not find CAS compatible to SysClk %dMhz\n",
				   (busClk / 1000000));

		if (MV_REG_READ(SDRAM_CONFIG_REG) & SDRAM_DTYPE_DDR2)
		{
			minCas = DDR2_CL_4; /* Continue with this CAS */
			mvOsPrintf("Set default CAS latency 4\n");
		}
		else
		{
			minCas = DDR1_CL_3; /* Continue with this CAS */
			mvOsPrintf("Set default CAS latency 3\n");
		}
	}

	/* calc SDRAM_CONFIG_REG  and save it to temp register */
	temp = sdramConfigRegCalc(&bankInfo[0], busClk);
	if(-1 == temp)
	{
		mvOsPrintf("Dram: ERR. sdramConfigRegCalc failed !!!\n");
		return MV_ERROR;
	}
	MV_REG_WRITE(DRAM_BUF_REG1, temp);

	/* calc SDRAM_MODE_REG  and save it to temp register */ 
	temp = sdramModeRegCalc(minCas);
	if(-1 == temp)
	{
		mvOsPrintf("Dram: ERR. sdramModeRegCalc failed !!!\n");
		return MV_ERROR;
	}
	MV_REG_WRITE(DRAM_BUF_REG2, temp);

	/* calc SDRAM_EXTENDED_MODE_REG  and save it to temp register */ 
	temp = sdramExtModeRegCalc(&bankInfo[0]);
	if(-1 == temp)
	{
		mvOsPrintf("Dram: ERR. sdramModeRegCalc failed !!!\n");
		return MV_ERROR;
	}
	MV_REG_WRITE(DRAM_BUF_REG10, temp);

	/* calc D_UNIT_CONTROL_LOW  and save it to temp register */
	temp = dunitCtrlLowRegCalc(&bankInfo[0], minCas); 
	if(-1 == temp)
	{
		mvOsPrintf("Dram: ERR. dunitCtrlLowRegCalc failed !!!\n");
		return MV_ERROR;
	}
	MV_REG_WRITE(DRAM_BUF_REG3, temp); 

	/* calc SDRAM_ADDR_CTRL_REG  and save it to temp register */
	temp = sdramAddrCtrlRegCalc(&bankInfo[0]);
	if(-1 == temp)
	{
		mvOsPrintf("Dram: ERR. sdramAddrCtrlRegCalc failed !!!\n");
		return MV_ERROR;
	}
	MV_REG_WRITE(DRAM_BUF_REG4, temp);

	/* calc SDRAM_TIMING_CTRL_LOW_REG  and save it to temp register */
	temp = sdramTimeCtrlLowRegCalc(&bankInfo[0], minCas, busClk);
	if(-1 == temp)
	{
		mvOsPrintf("Dram: ERR. sdramTimeCtrlLowRegCalc failed !!!\n");
		return MV_ERROR;
	}
	MV_REG_WRITE(DRAM_BUF_REG5, temp);

	/* calc SDRAM_TIMING_CTRL_HIGH_REG  and save it to temp register */
	temp = sdramTimeCtrlHighRegCalc(&bankInfo[0], busClk);
	if(-1 == temp)
	{
		mvOsPrintf("Dram: ERR. sdramTimeCtrlHighRegCalc failed !!!\n");
		return MV_ERROR;
	}
	MV_REG_WRITE(DRAM_BUF_REG6, temp);

	/* Config DDR2 On Die Termination (ODT) registers */
	if (MV_REG_READ(SDRAM_CONFIG_REG) & SDRAM_DTYPE_DDR2)
	{
		sdramDDr2OdtConfig(bankInfo);
	}
	
	/* Note that DDR SDRAM Address/Control and Data pad calibration     */
	/* settings is done in mvSdramIfConfig.s                            */

	return retVal;
}

/*******************************************************************************
* minCasCalc - Calculate the Minimum CAS latency which can be used.
*
* DESCRIPTION:
*	Calculate the minimum CAS latency that can be used, base on the DRAM
*	parameters and the SDRAM bus Clock freq.
*
* INPUT:
*	busClk    - the DRAM bus Clock.
*	pBankInfo - bank info parameters.
*
* OUTPUT:
*       None
*
* RETURN:
*       The minimum CAS Latency. The function returns 0 if max CAS latency
*		supported by banks is incompatible with system bus clock frequancy.
*
*******************************************************************************/
static MV_U32 minCasCalc(MV_DRAM_BANK_INFO *pBankInfo, MV_U32 busClk, 
						 MV_U32 forcedCl)
{
	MV_U32 count = 1, j;
	MV_U32 busClkPs = 1000000000 / (busClk / 1000);  /* in ps units */
	MV_U32 startBit, stopBit;
	
	/*     DDR 1:
			*******-******-******-******-******-******-******-******* 
			* bit7 | bit6 | bit5 | bit4 | bit3 | bit2 | bit1 | bit0 * 
			*******-******-******-******-******-******-******-******* 
	CAS	=	* TBD  |  4   | 3.5  |   3  | 2.5  |  2   | 1.5  |   1  * 
			*********************************************************/
	
	/*     DDR 2:
			*******-******-******-******-******-******-******-******* 
			* bit7 | bit6 | bit5 | bit4 | bit3 | bit2 | bit1 | bit0 * 
			*******-******-******-******-******-******-******-******* 
	CAS	=	* TBD  | TBD  |  5   |  4   |  3   |  2   | TBD  | TBD  * 
			*********************************************************/
	
	
	/* If we are asked to use the forced CAL */
	if (forcedCl)
	{
		mvOsPrintf("DRAM: Using forced CL %d.%d\n", (forcedCl / 10), 
													(forcedCl % 10));
	
		if (MV_REG_READ(SDRAM_CONFIG_REG) & SDRAM_DTYPE_DDR2)
		{
			if (forcedCl == 30)
				pBankInfo->suportedCasLatencies = 0x08;
			else if (forcedCl == 40)
				pBankInfo->suportedCasLatencies = 0x10;
			else
			{
				mvOsPrintf("Forced CL %d.%d not supported. Set default CL 4\n", 
						   (forcedCl / 10), (forcedCl % 10));
				pBankInfo->suportedCasLatencies = 0x10;
			}
		}
		else
		{
			if (forcedCl == 15)
				pBankInfo->suportedCasLatencies = 0x02;
			else if (forcedCl == 20)
				pBankInfo->suportedCasLatencies = 0x04;
			else if (forcedCl == 25)
				pBankInfo->suportedCasLatencies = 0x08;
			else if (forcedCl == 30)
				pBankInfo->suportedCasLatencies = 0x10;
			else if (forcedCl == 40)
				pBankInfo->suportedCasLatencies = 0x40;
			else
			{
				mvOsPrintf("Forced CL %d.%d not supported. Set default CL 3\n", 
						   (forcedCl / 10), (forcedCl % 10));
				pBankInfo->suportedCasLatencies = 0x10;
			}
		}
	
		return pBankInfo->suportedCasLatencies;        
	}   
	
	/* go over the supported cas mask from Max Cas down and check if the 	*/
	/* SysClk stands in its time requirments.								*/
	
	
	DB(mvOsPrintf("Dram: minCasCalc supported mask = %x busClkPs = %x \n",
								pBankInfo->suportedCasLatencies,busClkPs ));
	for(j = 7; j > 0; j--)
	{
		if((pBankInfo->suportedCasLatencies >> j) & BIT0 )
		{
			/* Reset the bits for CL incompatible for the sysClk            */
			switch (count)
			{
				case 1: 
					if (pBankInfo->minCycleTimeAtMaxCasLatPs > busClkPs) 
						pBankInfo->suportedCasLatencies &= ~(BIT0 << j);
					count++;
					break;
				case 2: 
					if (pBankInfo->minCycleTimeAtMaxCasLatMinus1Ps > busClkPs)
						pBankInfo->suportedCasLatencies &= ~(BIT0 << j);
					count++;
					break;
				case 3: 
					if (pBankInfo->minCycleTimeAtMaxCasLatMinus2Ps > busClkPs)
						pBankInfo->suportedCasLatencies &= ~(BIT0 << j);
					count++;
					break;
				default: 
					pBankInfo->suportedCasLatencies &= ~(BIT0 << j);
					break;
			}
		}
	}
	
	DB(mvOsPrintf("Dram: minCasCalc support = %x (after SysCC calc)\n",
				  pBankInfo->suportedCasLatencies ));
	
	/* SDRAM DDR1 controller supports CL 1.5 to 3.5 */
	/* SDRAM DDR2 controller supports CL 3 to 5     */
	if (MV_REG_READ(SDRAM_CONFIG_REG) & SDRAM_DTYPE_DDR2)
	{
		startBit = 3;   /* DDR2 support CL start with CL3 (bit 3) */
		stopBit  = 5;   /* DDR2 support CL stops with CL5 (bit 5) */
	}
	else
	{
		startBit = 1;   /* DDR1 support CL start with CL1.5 (bit 3) */
		stopBit  = 4;   /* DDR1 support CL stops with CL3 (bit 4)   */
	}
	
	for(j = startBit; j <= stopBit ; j++)
	{
		if((pBankInfo->suportedCasLatencies >> j) & BIT0 )
		{
			DB(mvOsPrintf("Dram: minCasCalc choose CAS %x \n",(BIT0 << j)));
			return (BIT0 << j);
		}
	}
	
	return 0; 
}

/*******************************************************************************
* sdramConfigRegCalc - Calculate sdram config register
*
* DESCRIPTION: Calculate sdram config register optimized value based
*			on the bank info parameters.
*
* INPUT:
*	pBankInfo - sdram bank parameters
*
* OUTPUT:
*       None
*
* RETURN:
*       sdram config reg value.
*
*******************************************************************************/
static MV_U32 sdramConfigRegCalc(MV_DRAM_BANK_INFO *pBankInfo, MV_U32 busClk)
{
	MV_U32 sdramConfig = 0;
	MV_U32 refreshPeriod;
	
	busClk /= 1000000; /* we work with busClk in MHz */
	
	sdramConfig = MV_REG_READ(SDRAM_CONFIG_REG);
	
	/* figure out the memory refresh internal */
	switch (pBankInfo->refreshInterval & 0xf)
	{
		case 0x0: /* refresh period is 15.625 usec */
			refreshPeriod = 15625;
			break;
		case 0x1: /* refresh period is 3.9 usec  	*/
			refreshPeriod = 3900;
			break;
		case 0x2: /* refresh period is 7.8 usec 	*/
			refreshPeriod = 7800;
			break;
		case 0x3: /* refresh period is 31.3 usec	*/
			refreshPeriod = 31300;
			break;
		case 0x4: /* refresh period is 62.5 usec	*/
			refreshPeriod = 62500;
			break;
		case 0x5: /* refresh period is 125 usec 	*/
			refreshPeriod = 125000;
			break;
		default:  /* refresh period undefined 					*/
			mvOsPrintf("Dram: ERR. DRAM refresh period is unknown!\n");
			return -1;
	}
	
	/* Now the refreshPeriod is in register format value */
	refreshPeriod = (busClk * refreshPeriod) / 1000;
	
	DB(mvOsPrintf("Dram: sdramConfigRegCalc calculated refresh interval %0x\n", 
				  refreshPeriod));

	/* make sure the refresh value is only 14 bits */
	if(refreshPeriod > SDRAM_REFRESH_MAX)
	{
		refreshPeriod = SDRAM_REFRESH_MAX;
		DB(mvOsPrintf("Dram: sdramConfigRegCalc adjusted refresh interval %0x\n", 
					  refreshPeriod));
	}
	
	/* Clear the refresh field */
	sdramConfig &= ~SDRAM_REFRESH_MASK;
	
	/* Set new value to refresh field */
	sdramConfig |= (refreshPeriod & SDRAM_REFRESH_MASK);
	
	/*  registered DRAM ? */
	if ( pBankInfo->registeredAddrAndControlInputs )
	{
		/* it's registered DRAM, so set the reg. DRAM bit */
		sdramConfig |= SDRAM_REGISTERED;
		mvOsPrintf("DRAM Attribute: Registered address and control inputs.\n");
	}
	
	/* set DDR SDRAM devices configuration */
	sdramConfig &= ~SDRAM_DCFG_MASK;    /* Clear Dcfg field */
	
	switch (pBankInfo->sdramWidth)
	{
		case 8:  /* memory is x8 */
			sdramConfig |= SDRAM_DCFG_X8_DEV;
			DB(mvOsPrintf("Dram: sdramConfigRegCalc SDRAM device width x8\n"));
			break;
		case 16:
			sdramConfig |= SDRAM_DCFG_X16_DEV;
			DB(mvOsPrintf("Dram: sdramConfigRegCalc SDRAM device width x16\n"));
			break;
		default: /* memory width unsupported */
			mvOsPrintf("Dram: ERR. DRAM chip width is unknown!\n");
			return -1;
	}

	/* Set static default settings */
	sdramConfig |= SDRAM_CONFIG_DV;
	
	DB(mvOsPrintf("Dram: sdramConfigRegCalc set sdramConfig to 0x%x\n",
				  sdramConfig));
	
	return sdramConfig;  
}

/*******************************************************************************
* sdramModeRegCalc - Calculate sdram mode register
*
* DESCRIPTION: Calculate sdram mode register optimized value based
*			on the bank info parameters and the minCas.
*
* INPUT:
*	minCas	  - minimum CAS supported. 
*
* OUTPUT:
*       None
*
* RETURN:
*       sdram mode reg value.
*
*******************************************************************************/
static MV_U32 sdramModeRegCalc(MV_U32 minCas)
{
	MV_U32 sdramMode;
		
	sdramMode = MV_REG_READ(SDRAM_MODE_REG);
	
	/* Clear CAS Latency field */
	sdramMode &= ~SDRAM_CL_MASK;
	
	mvOsPrintf("DRAM CAS Latency ");
	
	if (MV_REG_READ(SDRAM_CONFIG_REG) & SDRAM_DTYPE_DDR2)
	{            	
		switch (minCas)
		{
			case DDR2_CL_3: 
				sdramMode |= SDRAM_DDR2_CL_3;
				mvOsPrintf("3.\n");
				break;
			case DDR2_CL_4: 
				sdramMode |= SDRAM_DDR2_CL_4;
				mvOsPrintf("4.\n");
				break;
			case DDR2_CL_5: 
				sdramMode |= SDRAM_DDR2_CL_5;
				mvOsPrintf("5.\n");
				break;
			default:
				mvOsPrintf("\nsdramModeRegCalc ERROR: Max. CL out of range\n");
				return -1;
		}
	sdramMode |= DDR2_MODE_REG_DV;
	}
	else	/* DDR1 */
	{
		switch (minCas)
		{			
			case DDR1_CL_1_5: 
				sdramMode |= SDRAM_DDR1_CL_1_5;
				mvOsPrintf("1.5\n");
				break;
			case DDR1_CL_2: 
				sdramMode |= SDRAM_DDR1_CL_2;
				mvOsPrintf("2\n");
				break;            
			case DDR1_CL_2_5: 
				sdramMode |= SDRAM_DDR1_CL_2_5;
				mvOsPrintf("2.5\n");
				break;
			case DDR1_CL_3: 
				sdramMode |= SDRAM_DDR1_CL_3;
				mvOsPrintf("3\n");
				break;
			case DDR1_CL_4: 
				sdramMode |= SDRAM_DDR1_CL_4;
				mvOsPrintf("4\n");
				break;
			default:
				mvOsPrintf("\nsdramModeRegCalc ERROR: Max. CL out of range\n");
				return -1;	
		}
		sdramMode |= DDR1_MODE_REG_DV;		
	}
	
	DB(mvOsPrintf("nsdramModeRegCalc register 0x%x\n", sdramMode ));

	return sdramMode;
}

/*******************************************************************************
* sdramExtModeRegCalc - Calculate sdram Extended mode register
*
* DESCRIPTION: 
*		Return sdram Extended mode register value based
*		on the bank info parameters and bank presence.
*
* INPUT:
*	pBankInfo - sdram bank parameters
*
* OUTPUT:
*       None
*
* RETURN:
*       sdram Extended mode reg value.
*
*******************************************************************************/
static MV_U32 sdramExtModeRegCalc(MV_DRAM_BANK_INFO *pBankInfo)
{
	MV_U32 populateBanks = 0;
	int bankNum;
	if (MV_REG_READ(SDRAM_CONFIG_REG) & SDRAM_DTYPE_DDR2)
	{
	/* Represent the populate banks in binary form */
	for(bankNum = 0; bankNum < MV_DRAM_MAX_CS; bankNum++)
	{
		if (0 != pBankInfo[bankNum].size)
		{
				populateBanks |= (1 << bankNum);
			}
		}
	
		switch(populateBanks)
		{
			case(BANK_PRESENT_CS0):
				return DDR_SDRAM_EXT_MODE_CS0_DV;
		
			case(BANK_PRESENT_CS0_CS1):
				return DDR_SDRAM_EXT_MODE_CS0_DV;
		
			case(BANK_PRESENT_CS0_CS2):
				return DDR_SDRAM_EXT_MODE_CS0_CS2_DV;
		
			case(BANK_PRESENT_CS0_CS1_CS2):
				return DDR_SDRAM_EXT_MODE_CS0_CS2_DV;
		
			case(BANK_PRESENT_CS0_CS2_CS3):
				return DDR_SDRAM_EXT_MODE_CS0_CS2_DV;
		
			case(BANK_PRESENT_CS0_CS2_CS3_CS4):
				return DDR_SDRAM_EXT_MODE_CS0_CS2_DV;
		
			default:
				mvOsPrintf("sdramExtModeRegCalc: Invalid DRAM bank presence\n");
				return -1;
		} 
	}
	return 0;
}

/*******************************************************************************
* dunitCtrlLowRegCalc - Calculate sdram dunit control low register
*
* DESCRIPTION: Calculate sdram dunit control low register optimized value based
*			on the bank info parameters and the minCas.
*
* INPUT:
*	pBankInfo - sdram bank parameters
*	minCas	  - minimum CAS supported. 
*
* OUTPUT:
*       None
*
* RETURN:
*       sdram dunit control low reg value.
*
*******************************************************************************/
static MV_U32 dunitCtrlLowRegCalc(MV_DRAM_BANK_INFO *pBankInfo, MV_U32 minCas)
{
	MV_U32 dunitCtrlLow;
	
	dunitCtrlLow = MV_REG_READ(SDRAM_DUNIT_CTRL_REG);
	
	/* Clear StBurstDel field */
	dunitCtrlLow &= ~SDRAM_ST_BURST_DEL_MASK;
	
#ifdef MV_88W8660
	/* Clear address/control output timing field */
	dunitCtrlLow &= ~SDRAM_CTRL_POS_RISE;
#endif /* MV_88W8660 */

	DB(mvOsPrintf("Dram: dunitCtrlLowRegCalc\n"));
	
	/* For proper sample of read data set the Dunit Control register's      */
	/* stBurstDel bits [27:24]                                              */
			/********-********-********-********-********-*********
			* CL=1.5 |  CL=2  | CL=2.5 |  CL=3  |  CL=4  |  CL=5  *
			*********-********-********-********-********-*********
Not Reg.	*  0011  |  0011  |  0100  |  0100  |  0101  |  TBD   *
			*********-********-********-********-********-*********
Registered	*  0100  |  0100  |  0101  |  0101  |  0110  |  TBD   *
			*********-********-********-********-********-*********/
    
	if (MV_REG_READ(SDRAM_CONFIG_REG) & SDRAM_DTYPE_DDR2)
	{
		switch (minCas)
		{
			case DDR2_CL_3: 
					/* registerd DDR SDRAM? */
				if (pBankInfo->registeredAddrAndControlInputs == MV_TRUE) 		
					dunitCtrlLow |= 0x5 << SDRAM_ST_BURST_DEL_OFFS;
				else
					dunitCtrlLow |= 0x4 << SDRAM_ST_BURST_DEL_OFFS;
				break;
			case DDR2_CL_4: 
				/* registerd DDR SDRAM? */
				if (pBankInfo->registeredAddrAndControlInputs == MV_TRUE) 		
					dunitCtrlLow |= 0x6 << SDRAM_ST_BURST_DEL_OFFS;
				else
					dunitCtrlLow |= 0x5 << SDRAM_ST_BURST_DEL_OFFS;	
				break;
			default:
				mvOsPrintf("Dram: dunitCtrlLowRegCalc Max. CL out of range %d\n", 
						   minCas);
				return -1;
		}
	}
	else    /* DDR1 */
	{
		switch (minCas)
		{
			case DDR1_CL_1_5: 
				/* registerd DDR SDRAM? */
				if (pBankInfo->registeredAddrAndControlInputs == MV_TRUE)
					dunitCtrlLow |= 0x4 << SDRAM_ST_BURST_DEL_OFFS;
				else
					dunitCtrlLow |= 0x3 << SDRAM_ST_BURST_DEL_OFFS;
				break;
			case DDR1_CL_2: 
				/* registerd DDR SDRAM? */
				if (pBankInfo->registeredAddrAndControlInputs == MV_TRUE)
					dunitCtrlLow |= 0x4 << SDRAM_ST_BURST_DEL_OFFS;
				else
					dunitCtrlLow |= 0x3 << SDRAM_ST_BURST_DEL_OFFS;
				break;
			case DDR1_CL_2_5: 
				/* registerd DDR SDRAM? */
				if (pBankInfo->registeredAddrAndControlInputs == MV_TRUE)
					dunitCtrlLow |= 0x5 << SDRAM_ST_BURST_DEL_OFFS;
				else
					dunitCtrlLow |= 0x4 << SDRAM_ST_BURST_DEL_OFFS;	
				break;
			case DDR1_CL_3: 
				/* registerd DDR SDRAM? */
				if (pBankInfo->registeredAddrAndControlInputs == MV_TRUE)
					dunitCtrlLow |= 0x5 << SDRAM_ST_BURST_DEL_OFFS;
				else
					dunitCtrlLow |= 0x4 << SDRAM_ST_BURST_DEL_OFFS;	
				break;
			case DDR1_CL_4: 
				/* registerd DDR SDRAM? */
				if (pBankInfo->registeredAddrAndControlInputs == MV_TRUE)
					dunitCtrlLow |= 0x6 << SDRAM_ST_BURST_DEL_OFFS;
				else
					dunitCtrlLow |= 0x5 << SDRAM_ST_BURST_DEL_OFFS;	
				break;
			default:
				mvOsPrintf("Dram: dunitCtrlLowRegCalc Max. CL out of range %d\n", 
						   minCas);
				return -1;
	}
	
	}
	DB(mvOsPrintf("Dram: Reg dunit control low = %x\n", dunitCtrlLow ));

	return dunitCtrlLow;
}  
                                                                    
/*******************************************************************************
* sdramAddrCtrlRegCalc - Calculate sdram address control register
*
* DESCRIPTION: Calculate sdram address control register optimized value based
*			on the bank info parameters and the minCas.
*
* INPUT:
*	pBankInfo - sdram bank parameters
*
* OUTPUT:
*       None
*
* RETURN:
*       sdram address control reg value.
*
*******************************************************************************/
static MV_U32 sdramAddrCtrlRegCalc(MV_DRAM_BANK_INFO *pBankInfo)
{
	MV_U32 addrCtrl = 0;
	
	/* Set Address Control register static configuration bits */
	addrCtrl = MV_REG_READ(SDRAM_ADDR_CTRL_REG);
	
	/* Set address control default value */
	addrCtrl |= SDRAM_ADDR_CTRL_DV;  
	
	/* Clear DSize field */
	addrCtrl &= ~SDRAM_DSIZE_MASK;
	
	/* Note that density is in MB units */
	switch (pBankInfo->deviceDensity) 
	{
		case 128:                 /* 128 Mbit */
			DB(mvOsPrintf("DRAM Device Density 128Mbit\n"));
			addrCtrl |= SDRAM_DSIZE_128Mb;
			break;
		case 256:                 /* 256 Mbit */
			DB(mvOsPrintf("DRAM Device Density 256Mbit\n"));
			addrCtrl |= SDRAM_DSIZE_256Mb;
			break;
		case 512:                /* 512 Mbit */
			DB(mvOsPrintf("DRAM Device Density 512Mbit\n"));
			addrCtrl |= SDRAM_DSIZE_512Mb;
			break;
		default:
			mvOsPrintf("Dram: sdramAddrCtrl unsupported RAM-Device size %d\n",
                       pBankInfo->deviceDensity);
			return -1;
	}
     
	/* SDRAM address control */
	DB(mvOsPrintf("Dram: setting sdram address control with: %x \n", addrCtrl));

	return addrCtrl;
}

/*******************************************************************************
* sdramTimeCtrlLowRegCalc - Calculate sdram timing control low register
*
* DESCRIPTION: 
*       This function calculates sdram timing control low register 
*       optimized value based on the bank info parameters and the minCas.
*
* INPUT:
*	    pBankInfo - sdram bank parameters
*       busClk    - Bus clock
*
* OUTPUT:
*       None
*
* RETURN:
*       sdram timinf control low reg value.
*
*******************************************************************************/
static MV_U32 sdramTimeCtrlLowRegCalc(MV_DRAM_BANK_INFO *pBankInfo, 
                                                MV_U32 minCas, MV_U32 busClk)
{
	MV_U32 tRp  = 0;
	MV_U32 tRrd = 0;
	MV_U32 tRcd = 0;
	MV_U32 tRas = 0;
	MV_U32 tWr  = 0;
	MV_U32 tWtr = 0;
	MV_U32 tRtp = 0;
	
	MV_U32 bankNum;
	
	busClk = busClk / 1000000;    /* In MHz */
	
	/* Scan all DRAM banks to find maximum timing values */
	for (bankNum = 0; bankNum < MV_DRAM_MAX_CS; bankNum++)
	{
		tRp  = MV_MAX(tRp,  pBankInfo[bankNum].minRowPrechargeTime);
		tRrd = MV_MAX(tRrd, pBankInfo[bankNum].minRowActiveToRowActive);
		tRcd = MV_MAX(tRcd, pBankInfo[bankNum].minRasToCasDelay);
		tRas = MV_MAX(tRas, pBankInfo[bankNum].minRasPulseWidth);
	}
	
	/* Extract timing (in ns) from SPD value. We ignore the tenth ns part.  */
	/* by shifting the data two bits right.                                 */
	tRp  = tRp  >> 2;    /* For example 0x50 -> 20ns                        */
	tRrd = tRrd >> 2;
	tRcd = tRcd >> 2;
	
	/* Extract clock cycles from time parameter. We need to round up        */
	tRp  = ((busClk * tRp)  / 1000) + (((busClk * tRp)  % 1000) ? 1 : 0);
	/* Micron work around for 133MHz */
	if (busClk == 133)
		tRp += 1;
	DB(mvOsPrintf("Dram  Timing Low: tRp = %d ", tRp));
	tRrd = ((busClk * tRrd) / 1000) + (((busClk * tRrd) % 1000) ? 1 : 0);
	/* JEDEC min reqeirments tRrd = 2 */
	if (tRrd < 2)
		tRrd = 2;
	DB(mvOsPrintf("tRrd = %d ", tRrd));
	tRcd = ((busClk * tRcd) / 1000) + (((busClk * tRcd) % 1000) ? 1 : 0);
	DB(mvOsPrintf("tRcd = %d ", tRcd));
	tRas = ((busClk * tRas) / 1000) + (((busClk * tRas) % 1000) ? 1 : 0);
	DB(mvOsPrintf("tRas = %d ", tRas));
	
	/* tWr and tWtr is different for DDR1 and DDR2. tRtp is only for DDR2   */
	if (MV_REG_READ(SDRAM_CONFIG_REG) & SDRAM_DTYPE_DDR2)
	{
		/* Scan all DRAM banks to find maximum timing values */
		for (bankNum = 0; bankNum < MV_DRAM_MAX_CS; bankNum++)
		{
			tWr  = MV_MAX(tWr,  pBankInfo[bankNum].minWriteRecoveryTime);
			tWtr = MV_MAX(tWtr, pBankInfo[bankNum].minWriteToReadCmdDelay);
			tRtp = MV_MAX(tRtp, pBankInfo[bankNum].minReadToPrechCmdDelay);
		}
		
		/* Extract timing (in ns) from SPD value. We ignore the tenth ns    */
		/* part by shifting the data two bits right.                        */
		tWr  = tWr  >> 2;    /* For example 0x50 -> 20ns                    */
		tWtr = tWtr >> 2;
		tRtp = tRtp >> 2;
	
		/* Extract clock cycles from time parameter. We need to round up    */
		tWr  = ((busClk * tWr)  / 1000) + (((busClk * tWr)  % 1000) ? 1 : 0);
		DB(mvOsPrintf("tWr = %d ", tWr));
		tWtr = ((busClk * tWtr) / 1000) + (((busClk * tWtr) % 1000) ? 1 : 0);
		/* JEDEC min reqeirments tWtr = 2 */
		if (tWtr < 2)
			tWtr = 2;
		DB(mvOsPrintf("tWtr = %d ", tWtr));
		tRtp = ((busClk * tRtp) / 1000) + (((busClk * tRtp) % 1000) ? 1 : 0);
		/* JEDEC min reqeirments tRtp = 2 */
		if (tRtp < 2)
			tRtp = 2;
		DB(mvOsPrintf("tRtp = %d ", tRtp));
	}
	else
	{    
		tWr  = ((busClk*SDRAM_TWR) / 1000) + (((busClk*SDRAM_TWR) % 1000)?1:0);
		
		if ((200 == busClk) || ((100 == busClk) && (DDR1_CL_1_5 == minCas)))
		{
			tWtr = 2;
		}
		else
		{
			tWtr = 1;
		}
		
		tRtp = 2; /* Must be set to 0x1 (two cycles) when using DDR1 */
	}
	
	DB(mvOsPrintf("tWtr = %d\n", tWtr));
	
	/* Note: value of 0 in register means one cycle, 1 means two and so on  */
	return (((tRp  - 1) << SDRAM_TRP_OFFS)	|
			((tRrd - 1) << SDRAM_TRRD_OFFS)	|
			((tRcd - 1) << SDRAM_TRCD_OFFS)	|
			((tRas - 1) << SDRAM_TRAS_OFFS)	|
			((tWr  - 1) << SDRAM_TWR_OFFS)	|
			((tWtr - 1) << SDRAM_TWTR_OFFS)	|
			((tRtp - 1) << SDRAM_TRTP_OFFS));
}

/*******************************************************************************
* sdramTimeCtrlHighRegCalc - Calculate sdram timing control high register
*
* DESCRIPTION: 
*       This function calculates sdram timing control high register 
*       optimized value based on the bank info parameters and the bus clock.
*
* INPUT:
*	    pBankInfo - sdram bank parameters
*       busClk    - Bus clock
*
* OUTPUT:
*       None
*
* RETURN:
*       sdram timinf control high reg value.
*
*******************************************************************************/
static MV_U32 sdramTimeCtrlHighRegCalc(MV_DRAM_BANK_INFO *pBankInfo, 
                                                                MV_U32 busClk)
{
	MV_U32 tRfc;
	MV_U32 timeNs = 0;
	int bankNum;
	MV_U32 sdramTw2wCyc = 0;
	
	busClk = busClk / 1000000;    /* In MHz */
	
	/* tRfc is different for DDR1 and DDR2. */
	if (MV_REG_READ(SDRAM_CONFIG_REG) & SDRAM_DTYPE_DDR2)
	{
		MV_U32 bankNum;
	
		/* Scan all DRAM banks to find maximum timing values */
		for (bankNum = 0; bankNum < MV_DRAM_MAX_CS; bankNum++)
			timeNs = MV_MAX(timeNs,  pBankInfo[bankNum].minRefreshToActiveCmd);
	}
	else
	{
		if (pBankInfo[0].deviceDensity == _1G)
		{
			timeNs = SDRAM_TRFC_1G;
		}
		else
		{
			if (200 == busClk)
			{
				timeNs = SDRAM_TRFC_64_512M_AT_200MHZ;
			}
			else
			{
				timeNs = SDRAM_TRFC_64_512M;
			}
		}
	}
	
	tRfc = ((busClk * timeNs)  / 1000) + (((busClk * timeNs)  % 1000) ? 1 : 0);
	
	DB(mvOsPrintf("Dram  Timing High: tRfc = %d\n", tRfc));

	
	/* Represent the populate banks in binary form */
	for(bankNum = 0; bankNum < MV_DRAM_MAX_CS; bankNum++)
	{
		if (0 != pBankInfo[bankNum].size)
			sdramTw2wCyc++;
	}

	/* If we have more the 1 bank then we need the TW2W in 1 for ODT switch */	
	if (sdramTw2wCyc > 1)
		sdramTw2wCyc = 1;
	else
		sdramTw2wCyc = 0;

	/* Note: value of 0 in register means one cycle, 1 means two and so on  */
	return ((((tRfc - 1) & SDRAM_TRFC_MASK)	<< SDRAM_TRFC_OFFS)		|
			((SDRAM_TR2R_CYC - 1)			<< SDRAM_TR2R_OFFS)		|
			((SDRAM_TR2WW2R_CYC - 1)		<< SDRAM_TR2W_W2R_OFFS)	|
			(((tRfc - 1) >> 4)				<< SDRAM_TRFC_EXT_OFFS)	|
			(sdramTw2wCyc					<< SDRAM_TW2W_OFFS));
	
}

/*******************************************************************************
* sdramDDr2OdtConfig - Set DRAM DDR2 On Die Termination registers.
*
* DESCRIPTION: 
*       This function config DDR2 On Die Termination (ODT) registers.
*	ODT configuration is done according to DIMM presence:
*	
*       Presence	  Ctrl Low    Ctrl High  Dunit Ctrl   Ext Mode  
*	CS0	         0x84210000  0x00000000  0x0000780F  0x00000440 
*	CS0+CS1          0x84210000  0x00000000  0x0000780F  0x00000440 
*	CS0+CS2	    	 0x030C030C  0x00000000  0x0000740F  0x00000404 
*	CS0+CS1+CS2	 0x030C030C  0x00000000  0x0000740F  0x00000404 
*	CS0+CS2+CS3	 0x030C030C  0x00000000  0x0000740F  0x00000404 
*	CS0+CS1+CS2+CS3  0x030C030C  0x00000000  0x0000740F  0x00000404 
*		
* INPUT:
*		pBankInfo - bank info parameters.
*
* OUTPUT:
*       None
*
* RETURN:
*       None
*******************************************************************************/
static void sdramDDr2OdtConfig(MV_DRAM_BANK_INFO *pBankInfo)
{
	MV_U32 populateBanks = 0;
	MV_U32 odtCtrlLow, odtCtrlHigh, dunitOdtCtrl;
	int bankNum;
	
	/* Represent the populate banks in binary form */
	for(bankNum = 0; bankNum < MV_DRAM_MAX_CS; bankNum++)
	{
		if (0 != pBankInfo[bankNum].size)
		{
				populateBanks |= (1 << bankNum);
			}
		}
	
	switch(populateBanks)
	{
		case(BANK_PRESENT_CS0):
			odtCtrlLow   = DDR2_ODT_CTRL_LOW_CS0_DV;
			odtCtrlHigh  = DDR2_ODT_CTRL_HIGH_CS0_DV;
			dunitOdtCtrl = DDR2_DUNIT_ODT_CTRL_CS0_DV;
			break;
		case(BANK_PRESENT_CS0_CS1):
			odtCtrlLow   = DDR2_ODT_CTRL_LOW_CS0_DV;
			odtCtrlHigh  = DDR2_ODT_CTRL_HIGH_CS0_DV;
			dunitOdtCtrl = DDR2_DUNIT_ODT_CTRL_CS0_DV;
			break;
		case(BANK_PRESENT_CS0_CS2):
			odtCtrlLow   = DDR2_ODT_CTRL_LOW_CS0_CS2_DV;
			odtCtrlHigh  = DDR2_ODT_CTRL_HIGH_CS0_CS2_DV;
			dunitOdtCtrl = DDR2_DUNIT_ODT_CTRL_CS0_CS2_DV;
			break;
		case(BANK_PRESENT_CS0_CS1_CS2):
			odtCtrlLow   = DDR2_ODT_CTRL_LOW_CS0_CS2_DV;
			odtCtrlHigh  = DDR2_ODT_CTRL_HIGH_CS0_CS2_DV;
			dunitOdtCtrl = DDR2_DUNIT_ODT_CTRL_CS0_CS2_DV;
			break;
		case(BANK_PRESENT_CS0_CS2_CS3):
			odtCtrlLow   = DDR2_ODT_CTRL_LOW_CS0_CS2_DV;
			odtCtrlHigh  = DDR2_ODT_CTRL_HIGH_CS0_CS2_DV;
			dunitOdtCtrl = DDR2_DUNIT_ODT_CTRL_CS0_CS2_DV;
			break;
		case(BANK_PRESENT_CS0_CS2_CS3_CS4):
			odtCtrlLow   = DDR2_ODT_CTRL_LOW_CS0_CS2_DV;
			odtCtrlHigh  = DDR2_ODT_CTRL_HIGH_CS0_CS2_DV;
			dunitOdtCtrl = DDR2_DUNIT_ODT_CTRL_CS0_CS2_DV;
			break;
		default:
			mvOsPrintf("sdramDDr2OdtConfig: Invalid DRAM bank presence\n");
			return;
	} 
	MV_REG_WRITE(DRAM_BUF_REG7, odtCtrlLow);
	MV_REG_WRITE(DRAM_BUF_REG8, odtCtrlHigh);
	MV_REG_WRITE(DRAM_BUF_REG9, dunitOdtCtrl);
	return;
}
#endif /* defined(MV_INC_BOARD_DDIM) */

/*******************************************************************************
* mvDramIfWinSet - Set DRAM interface address decode window
*
* DESCRIPTION: 
*       This function sets DRAM interface address decode window.
*
* INPUT:
*	    target      - System target. Use only SDRAM targets.
*       pAddrDecWin - SDRAM address window structure.
*
* OUTPUT:
*       None
*
* RETURN:
*       MV_BAD_PARAM if parameters are invalid or window is invalid, MV_OK
*       otherwise.
*******************************************************************************/
MV_STATUS mvDramIfWinSet(MV_TARGET target, MV_DRAM_DEC_WIN *pAddrDecWin)
{
	MV_U32 baseReg=0,sizeReg=0;
	MV_U32 baseToReg=0 , sizeToReg=0;

    /* Check parameters */
	if (!MV_TARGET_IS_DRAM(target))
	{
		mvOsPrintf("mvDramIfWinSet: target %d is not SDRAM\n", target);
		return MV_BAD_PARAM;
	}

    /* Check if the requested window overlaps with current enabled windows	*/
    if (MV_TRUE == sdramIfWinOverlap(target, &pAddrDecWin->addrWin))
	{
        mvOsPrintf("mvDramIfWinSet: ERR. Target %d overlaps\n", target);
		return MV_BAD_PARAM;
	}

	/* check if address is aligned to the size */
	if(MV_IS_NOT_ALIGN(pAddrDecWin->addrWin.baseLow, pAddrDecWin->addrWin.size))
	{
		mvOsPrintf("mvDramIfWinSet:Error setting DRAM interface window %d."\
				   "\nAddress 0x%08x is unaligned to size 0x%x.\n",
                   target, 
				   pAddrDecWin->addrWin.baseLow,
				   pAddrDecWin->addrWin.size);
		return MV_ERROR;
	}

	/* read base register*/
	baseReg = MV_REG_READ(SDRAM_BASE_ADDR_REG(target));

	/* read size register */
	sizeReg = MV_REG_READ(SDRAM_SIZE_REG(target));

	/* BaseLow[31:16] => base register [31:16]		*/
	baseToReg = pAddrDecWin->addrWin.baseLow & SCBAR_BASE_MASK;

	/* Write to address decode Base Address Register                  */
	baseReg &= ~SCBAR_BASE_MASK;
	baseReg |= baseToReg;

	/* Translate the given window size to register format			*/
	sizeToReg = ctrlSizeToReg(pAddrDecWin->addrWin.size, SCSR_SIZE_ALIGNMENT);

	/* Size parameter validity check.                                   */
	if (-1 == sizeToReg)
	{
		mvOsPrintf("mvCtrlAddrDecToReg: ERR. Win %d size invalid.\n",target);
		return MV_BAD_PARAM;
	}

	/* set size */
	sizeReg &= ~SCSR_SIZE_MASK;
	/* Size is located at upper 16 bits */
	sizeReg |= (sizeToReg << SCSR_SIZE_OFFS);

	/* enable/Disable */
	if (MV_TRUE == pAddrDecWin->enable)
	{
		sizeReg |= SCSR_WIN_EN;
	}
	else
	{
		sizeReg &= ~SCSR_WIN_EN;
	}

	/* 3) Write to address decode Base Address Register                   */
	MV_REG_WRITE(SDRAM_BASE_ADDR_REG(target), baseReg);

	/* Write to address decode Size Register                        	*/
	MV_REG_WRITE(SDRAM_SIZE_REG(target), sizeReg);
	
	return MV_OK;
}
/*******************************************************************************
* mvDramIfWinGet - Get DRAM interface address decode window
*
* DESCRIPTION: 
*       This function gets DRAM interface address decode window.
*
* INPUT:
*	    target - System target. Use only SDRAM targets.
*
* OUTPUT:
*       pAddrDecWin - SDRAM address window structure.
*
* RETURN:
*       MV_BAD_PARAM if parameters are invalid or window is invalid, MV_OK
*       otherwise.
*******************************************************************************/
MV_STATUS mvDramIfWinGet(MV_TARGET target, MV_DRAM_DEC_WIN *pAddrDecWin)
{
	MV_U32 baseReg,sizeReg;
	MV_U32 sizeRegVal;

	/* Check parameters */
	if (!MV_TARGET_IS_DRAM(target))
	{
		mvOsPrintf("mvDramIfWinGet: target %d is Illigal\n", target);
		return MV_ERROR;
	}

	/* Read base and size registers */
	sizeReg = MV_REG_READ(SDRAM_SIZE_REG(target));
	baseReg = MV_REG_READ(SDRAM_BASE_ADDR_REG(target));

	sizeRegVal = (sizeReg & SCSR_SIZE_MASK) >> SCSR_SIZE_OFFS;

	pAddrDecWin->addrWin.size = ctrlRegToSize(sizeRegVal,
											 SCSR_SIZE_ALIGNMENT);

    /* Check if ctrlRegToSize returned OK */
	if (-1 == pAddrDecWin->addrWin.size)
	{
		mvOsPrintf("mvDramIfWinGet: size of target %d is Illigal\n", target);
		return MV_ERROR;
	}

	/* Extract base address						*/
	/* Base register [31:16] ==> baseLow[31:16] 		*/
	pAddrDecWin->addrWin.baseLow = baseReg & SCBAR_BASE_MASK;

	pAddrDecWin->addrWin.baseHigh =  0;


	if (sizeReg & SCSR_WIN_EN)
	{
		pAddrDecWin->enable = MV_TRUE;
	}
	else
	{
		pAddrDecWin->enable = MV_FALSE;			
	}

	return MV_OK;
}
/*******************************************************************************
* mvDramIfWinEnable - Enable/Disable SDRAM address decode window
*
* DESCRIPTION: 
*		This function enable/Disable SDRAM address decode window.
*
* INPUT:
*	    target - System target. Use only SDRAM targets.
*
* OUTPUT:
*		None.
*
* RETURN:
*		MV_ERROR in case function parameter are invalid, MV_OK otherewise.
*
*******************************************************************************/
MV_STATUS mvDramIfWinEnable(MV_TARGET target,MV_BOOL enable)
{
	MV_DRAM_DEC_WIN 	addrDecWin;

	/* Check parameters */
	if (!MV_TARGET_IS_DRAM(target))
	{
		mvOsPrintf("mvDramIfWinEnable: target %d is Illigal\n", target);
		return MV_ERROR;
	}

	if (enable == MV_TRUE) 
	{   /* First check for overlap with other enabled windows				*/
		if (MV_OK != mvDramIfWinGet(target, &addrDecWin))
		{
			mvOsPrintf("mvDramIfWinEnable:ERR. Getting target %d failed.\n", 
                                                                        target);
			return MV_ERROR;
		}
		/* Check for overlapping */
		if (MV_FALSE == sdramIfWinOverlap(target, &(addrDecWin.addrWin)))
		{
			/* No Overlap. Enable address decode winNum window              */
			MV_REG_BIT_SET(SDRAM_SIZE_REG(target), SCSR_WIN_EN);
		}
		else
		{   /* Overlap detected	*/
			mvOsPrintf("mvDramIfWinEnable: ERR. Target %d overlap detect\n",
                                                                        target);
			return MV_ERROR;
		}
	}
	else
	{   /* Disable address decode winNum window                             */
		MV_REG_BIT_RESET(SDRAM_SIZE_REG(target), SCSR_WIN_EN);
	}

	return MV_OK;
}

/*******************************************************************************
* sdramIfWinOverlap - Check if an address window overlap an SDRAM address window
*
* DESCRIPTION:
*		This function scan each SDRAM address decode window to test if it 
*		overlapps the given address windoow 
*
* INPUT:
*       target      - SDRAM target where the function skips checking.
*       pAddrDecWin - The tested address window for overlapping with 
*					  SDRAM windows.
*
* OUTPUT:
*       None.
*
* RETURN:
*       MV_TRUE if the given address window overlaps any enabled address
*       decode map, MV_FALSE otherwise.
*
*******************************************************************************/
static MV_BOOL sdramIfWinOverlap(MV_TARGET target, MV_ADDR_WIN *pAddrWin)
{
	MV_TARGET	targetNum;
	MV_DRAM_DEC_WIN 	addrDecWin;
	
	for(targetNum = SDRAM_CS0; targetNum < MV_DRAM_MAX_CS ; targetNum++)
	{
		/* don't check our winNum or illegal targets */
		if (targetNum == target)
		{
			continue;
		}
		
		/* Get window parameters 	*/
		if (MV_OK != mvDramIfWinGet(targetNum, &addrDecWin))
		{
			mvOsPrintf("sdramIfWinOverlap: ERR. TargetWinGet failed\n");
			return MV_ERROR;
		}
	
		/* Do not check disabled windows	*/
		if (MV_FALSE == addrDecWin.enable)
		{
			continue;
		}
	
		if(MV_TRUE == ctrlWinOverlapTest(pAddrWin, &addrDecWin.addrWin))
		{                    
			mvOsPrintf(
			"sdramIfWinOverlap: Required target %d overlap winNum %d\n", 
			target, targetNum);
			return MV_TRUE;           
		}
	}
	
	return MV_FALSE;
}

/*******************************************************************************
* mvDramIfBankSizeGet - Get DRAM interface bank size.
*
* DESCRIPTION:
*       This function returns the size of a given DRAM bank.
*
* INPUT:
*       bankNum - Bank number.
*
* OUTPUT:
*       None.
*
* RETURN:
*       DRAM bank size. If bank is disabled the function return '0'. In case 
*		or paramter is invalid, the function returns -1.
*
*******************************************************************************/
MV_32 mvDramIfBankSizeGet(MV_U32 bankNum)
{
    MV_DRAM_DEC_WIN 	addrDecWin;
	
	/* Check parameters */
	if (!MV_TARGET_IS_DRAM(bankNum))
	{
		mvOsPrintf("mvDramIfBankBaseGet: bankNum %d is invalid\n", bankNum);
		return -1;
	}
	/* Get window parameters 	*/
	if (MV_OK != mvDramIfWinGet(bankNum, &addrDecWin))
	{
		mvOsPrintf("sdramIfWinOverlap: ERR. TargetWinGet failed\n");
		return -1;
	}
	
	if (MV_TRUE == addrDecWin.enable)
	{
		return addrDecWin.addrWin.size;
	}
	else
	{
		return 0;
	}
}


/*******************************************************************************
* mvDramIfSizeGet - Get DRAM interface total size.
*
* DESCRIPTION:
*       This function get the DRAM total size.
*
* INPUT:
*       None.
*
* OUTPUT:
*       None.
*
* RETURN:
*       DRAM total size. In case or paramter is invalid, the function 
*		returns -1.
*
*******************************************************************************/
MV_32 mvDramIfSizeGet(MV_VOID)
{
	MV_U32 totalSize = 0, bankSize = 0, bankNum;
	
	for(bankNum = 0; bankNum < MV_DRAM_MAX_CS; bankNum++)
	{
		bankSize = mvDramIfBankSizeGet(bankNum);

		if (-1 == bankSize)
		{
			mvOsPrintf("Dram: mvDramIfSizeGet error with bank %d \n",bankNum);
			return -1;
		}
		else
		{
			totalSize += bankSize;
		}
	}
	
	DB(mvOsPrintf("Dram: Total DRAM size is 0x%x \n",totalSize));
	
	return totalSize;
}

/*******************************************************************************
* mvDramIfBankBaseGet - Get DRAM interface bank base.
*
* DESCRIPTION:
*       This function returns the 32 bit base address of a given DRAM bank.
*
* INPUT:
*       bankNum - Bank number.
*
* OUTPUT:
*       None.
*
* RETURN:
*       DRAM bank size. If bank is disabled or paramter is invalid, the 
*		function returns -1.
*
*******************************************************************************/
MV_32 mvDramIfBankBaseGet(MV_U32 bankNum)
{
    MV_DRAM_DEC_WIN 	addrDecWin;
	
	/* Check parameters */
	if (!MV_TARGET_IS_DRAM(bankNum))
	{
		mvOsPrintf("mvDramIfBankBaseGet: bankNum %d is invalid\n", bankNum);
		return -1;
	}
	/* Get window parameters 	*/
	if (MV_OK != mvDramIfWinGet(bankNum, &addrDecWin))
	{
		mvOsPrintf("sdramIfWinOverlap: ERR. TargetWinGet failed\n");
		return -1;
	}
	
	if (MV_TRUE == addrDecWin.enable)
	{
		return addrDecWin.addrWin.baseLow;
	}
	else
	{
		return -1;
	}
}