board/mv_ebu/a38x/armada_38x_family/ctrlEnv/sys/mvCpuIf.c

/*******************************************************************************
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Redistribution and use in source and binary forms, with or without modification,
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    *   Redistributions of source code must retain the above copyright notice,
	    this list of conditions and the following disclaimer.

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	notice, this list of conditions and the following disclaimer in the
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	used to endorse or promote products derived from this software without
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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;
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*******************************************************************************/

/* includes */
/*#include "cpu/mvCpu.h" *//* whoAmI() */
#include "ctrlEnv/sys/mvCpuIf.h"
#include "ctrlEnv/sys/mvAhbToMbusRegs.h"
#include "cpu/mvCpu.h"
#include "ctrlEnv/mvCtrlEnvLib.h"
#include "mvSysHwConfig.h"
#include "ddr2_3/mvDramIf.h"
#include "ddr2_3/mvDramIfRegs.h"
#include "pex/mvPexRegs.h"

/*#define MV_DEBUG*/
/* defines  */

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

/* locals   */
/* static functions */
static MV_BOOL cpuTargetWinOverlap(MV_TARGET target, MV_ADDR_WIN *pAddrWin);

MV_STATUS mvCpuIfVerify(MV_CPU_DEC_WIN *cpuAddrWinMap)
{
	MV_CPU_DEC_WIN win;
	MV_U32 target;
	MV_32 diff;

	for (target = 0; target < MAX_TARGETS; target++) {
		memset(&win, 0, sizeof(MV_CPU_DEC_WIN));

		if(win.enable == cpuAddrWinMap->enable)
		{
			if(win.enable)
			{
				diff  = (win.addrWin.baseLow  - cpuAddrWinMap->addrWin.baseLow);
				diff |= (win.addrWin.baseHigh - cpuAddrWinMap->addrWin.baseHigh);
				diff |= (win.addrWin.size     - cpuAddrWinMap->addrWin.size);
				/*TODO - Need to compare the window attributes as well */

				if(diff)
				{
					mvOsOutput("mvCpuIfVerify: Mismatched window size in target %d\n", target);
					return MV_ERROR;
				}
			}
		}
		else
		{
			mvOsOutput("mvCpuIfVerify: Mismatched enable field in target %d\n", target);
			return MV_ERROR;
		}
	}
	return MV_OK;
}
/*******************************************************************************
* mvCpuIfInitForCpu - Initialize Controller CPU interface
*
* DESCRIPTION:
*       This function initialize Controller CPU interface:
*       1. Set CPU interface configuration registers.
*       2. Set CPU master Pizza arbiter control according to static
*          configuration described in configuration file.
*       3. Opens CPU address decode windows. DRAM windows are assumed to be
*		   already set (auto detection).
*
* INPUT:
*       cpu      	- CPU id.
*
* OUTPUT:
*       None.
*
* RETURN:
*       None.
*
*******************************************************************************/
MV_STATUS mvCpuIfInitForCpu(MV_U32 cpu, MV_CPU_DEC_WIN *cpuAddrWinMap)
{
	MV_U32 regVal, i;
	MV_TARGET target;
	MV_ADDR_WIN addrWin;
	MV_U32 minBase = 0xFFFFFFFF;
	MV_U32 minSize;

	if (cpuAddrWinMap == NULL) {
		DB(mvOsPrintf("%s: CPU map NULL pointer\n", __func__));
		return MV_ERROR;
	}

	/* Set IO Bypass base address and size according to the cpuAddrWinMap */
	for (target = 0; cpuAddrWinMap[target].enable != TBL_TERM; target++) {
		if ((MV_TARGET_IS_DRAM(target)) || (DIS == cpuAddrWinMap[target].enable))
			continue;
		if (cpuAddrWinMap[target].addrWin.baseLow == 0)
			continue;
		if (cpuAddrWinMap[target].addrWin.baseLow < minBase)
			minBase = cpuAddrWinMap[target].addrWin.baseLow;
	}
	if (minBase != 0x0) {
		minSize = 0xFFFFFFFF - minBase + 1;
		if (!MV_IS_POWER_OF_2(minSize)) {
			/* Round up to next power of 2. */
			minSize = (1 << (mvLog2(minSize) + 1));
			minBase = 0xFFFFFFFF - minSize + 1;
		}

		/* Now write the base and size */
		MV_REG_WRITE(MBUS_BRIDGE_WIN_BASE_REG, minBase);
		/* Align window size to 64KB */
		regVal = (minSize / SDRAMWBR_BASE_ALIGNMENT) - 1;
		regVal = (regVal << 16) | 0x1;
		MV_REG_WRITE(MBUS_BRIDGE_WIN_CTRL_REG, regVal);
	}

	/* Set CPU Configuration register */
	regVal = MV_REG_READ(CPU_CONFIG_REG(cpu));
	regVal &= ~CPU_CONFIG_DEFAULT_MASK;
	regVal |= CPU_CONFIG_DEFAULT;
	MV_REG_WRITE(CPU_CONFIG_REG(cpu), regVal);

	for (i = 0; i < MAX_AHB_TO_MBUS_WINS-2; i++)
		mvAhbToMbusWinEnable(i, MV_FALSE);

	/* Disable all SRAM windows */
	mvCpuIfSramWinDisable();

	/* First disable all CPU target windows  */
	for (target = 0; cpuAddrWinMap[target].enable != TBL_TERM; target++) {
		if ((MV_TARGET_IS_DRAM(target)) || (target == INTER_REGS))
			continue;
#ifdef CONFIG_MV_AMP_ENABLE
		if(target == BOOT_ROM_CS)
			continue;
#endif

#if defined(MV_MEM_OVER_PEX_WA) || defined(MV_UART_OVER_PEX_WA)
		/* If the target PEX or PCI and memory is over PEX or PCI we don't touch this CPU windows */
		if (MV_TARGET_IS_PEX(target))
			continue;
#endif
#if defined(MV_RUN_FROM_FLASH)
		/* Don't disable the boot device.                               */
		if (target == DEV_BOOCS)
			continue;
#endif /* MV_RUN_FROM_FLASH */
		mvCpuIfTargetWinEnable(MV_CHANGE_BOOT_CS(target), MV_FALSE);
	}

#if defined(MV_RUN_FROM_FLASH)
	/* Resize the bootcs windows before other windows, because this     */
	/* window is enabled and will cause an overlap if not resized.      */
	target = DEV_BOOCS;

	if (MV_OK != mvCpuIfTargetWinSet(target, &cpuAddrWinMap[target])) {
		DB(mvOsPrintf("%s: ERR: mvCpuIfTargetWinSet failed\n", __func__));
		return MV_ERROR;
	}

	addrWin.baseLow = cpuAddrWinMap[target].addrWin.baseLow;
	addrWin.baseHigh = cpuAddrWinMap[target].addrWin.baseHigh;
	if (0xffffffff == mvAhbToMbusWinRemap(cpuAddrWinMap[target].winNum, &addrWin)) {
		DB(mvOsPrintf("%s: WARN: mvAhbToMbusWinRemap can't remap winNum=%d\n",
			      __func__, cpuAddrWinMap[target].winNum));
	}
#endif /* MV_RUN_FROM_FLASH */

	/* Go through all targets in user table until table terminator                  */
	for (target = 0; cpuAddrWinMap[target].enable != TBL_TERM; target++) {

#if defined(MV_RUN_FROM_FLASH)
		if (target == DEV_BOOCS)
			continue;
#endif /* MV_RUN_FROM_FLASH */

		/* if DRAM auto sizing is used do not initialized DRAM target windows,  */
		/* assuming this already has been done earlier.                         */
#ifdef	MV_DRAM_AUTO_SIZE
		if (MV_TARGET_IS_DRAM(target))
			continue;
#endif

#if defined(MV_MEM_OVER_PEX_WA) || defined(MV_UART_OVER_PEX_WA)
		/* If the target PEX or PCI and memory is over PEX or PCI we don't touch this CPU windows */
		if (MV_TARGET_IS_PEX(target))
			continue;
#endif
		if ((0 == cpuAddrWinMap[target].addrWin.size) || (DIS == cpuAddrWinMap[target].enable))
			continue;
		else {
			if (MV_OK != mvCpuIfTargetWinSet(target, &cpuAddrWinMap[target])) {
				DB(mvOsPrintf("%s: ERR: mvCpuIfTargetWinSet failed\n", __func__));
				return MV_ERROR;
			}
			if ((mvCtrlDevFamilyIdGet(mvCtrlModelGet()) ==
				MV_88F69XX) && (target == PSS_PORT)) {
				/* We need to remap PSS ports window to address
				** 0x0, as the design requires addresses
				** [31:27] to be zero */
				addrWin.baseLow = 0x0;
				addrWin.baseHigh = 0x0;
			} else {
				addrWin.baseLow = cpuAddrWinMap[target].addrWin.baseLow;
				addrWin.baseHigh = cpuAddrWinMap[target].addrWin.baseHigh;
			}
			if (0xffffffff == mvAhbToMbusWinRemap(cpuAddrWinMap[target].winNum, &addrWin)) {
				DB(mvOsPrintf("%s: WARN: mvAhbToMbusWinRemap can't remap winNum=%d\n",
					      __func__, cpuAddrWinMap[target].winNum));
			}
		}
	}

	return MV_OK;
}

/*******************************************************************************/
MV_STATUS mvCpuIfInit(MV_CPU_DEC_WIN *cpuAddrWinMap)
{
	return mvCpuIfInitForCpu(whoAmI(), cpuAddrWinMap);
}

/*******************************************************************************
* mvCpuIfDramInit - Initialize Controller DRAM Fastpath windows
*
* DESCRIPTION:
*       This function initialize Controller DRAM Fastpath windows
*		It takes the CS size information from the 0x1500 scratch registers
*		and sets the correct windows sizes and base addresses accordingly
* INPUT:
*       None.
*
* OUTPUT:
*       None.
*
* RETURN:
*       None.
*
*******************************************************************************/
MV_STATUS mvCpuIfDramInit()
{
	MV_U64 base = 0;
	MV_U32 size, cs, temp;

	for (cs = 0; cs < SDRAM_MAX_CS; cs++) {
		size = MV_REG_READ(SDRAM_SIZE_REG(cs)) & SDRAM_ADDR_MASK;
		if (size != 0) {
			size |= ~(SDRAM_ADDR_MASK);

			/* Set Base Address */
			temp = (base & 0xFF000000ll) | ((base >> 32) & 0xF);
			MV_REG_WRITE(SDRAM_WIN_BASE_REG(cs), temp);

			/* Check if out of max window size and resize the window */
#if 0
			if (base+size > SDRAM_MAX_ADDR) {
				size = SDRAM_MAX_ADDR - base - 1;
				MV_REG_WRITE(SDRAM_SIZE_REG(cs), 0);
			}
#endif
			temp = (MV_REG_READ(SDRAM_WIN_CTRL_REG(cs)) & ~(SDRAM_ADDR_MASK)) | (1<<SDRAM_WIN_CTRL_WIN_ENA_OFFS);
			temp |= (size & SDRAM_ADDR_MASK);

			MV_REG_WRITE(SDRAM_WIN_CTRL_REG(cs), temp);
			base += ((MV_U64)size + 1);
		}
	}

	return MV_OK;
}

/*******************************************************************************
* mvCpuIfTargetWinSet - Set CPU-to-peripheral target address window
*
* DESCRIPTION:
*       This function sets a peripheral target (e.g. SDRAM bank0, PCI0_MEM0)
*       address window, also known as address decode window.
*       A new address decode window is set for specified target address window.
*       If address decode window parameter structure enables the window,
*       the routine will also enable the target window, allowing CPU to access
*       the target window.
*
* INPUT:
*       target      - Peripheral target enumerator.
*       pAddrDecWin - CPU target window data structure.
*
* OUTPUT:
*       N/A
*
* RETURN:
*       MV_OK if CPU target window was set correctly, MV_ERROR in case of
*       address window overlapps with other active CPU target window or
*		trying to assign 36bit base address while CPU does not support that.
*       The function returns MV_NOT_SUPPORTED, if the target is unsupported.
*
*******************************************************************************/
MV_STATUS mvCpuIfTargetWinSet(MV_TARGET target, MV_CPU_DEC_WIN *pAddrDecWin)
{
	MV_AHB_TO_MBUS_DEC_WIN decWin;
	MV_U32 existingWinNum;
	MV_DRAM_DEC_WIN addrDecWin;

	target = MV_CHANGE_BOOT_CS(target);

	/* Check parameters */
	if (target >= MAX_TARGETS) {
		mvOsPrintf("mvCpuIfTargetWinSet: target %d is illegal\n", target);
		return MV_ERROR;
	}

	/* 2) Check if the requested window overlaps with current windows */
	if (MV_TRUE == cpuTargetWinOverlap(target, &pAddrDecWin->addrWin)) {
		mvOsPrintf("mvCpuIfTargetWinSet: ERR. Target %d overlap\n", target);
		return MV_BAD_PARAM;
	}

	if (MV_TARGET_IS_DRAM(target)) {
		/* copy relevant data to MV_DRAM_DEC_WIN structure */
		addrDecWin.addrWin.baseHigh = pAddrDecWin->addrWin.baseHigh;
		addrDecWin.addrWin.baseLow = pAddrDecWin->addrWin.baseLow;
		addrDecWin.addrWin.size = pAddrDecWin->addrWin.size;
		addrDecWin.enable = pAddrDecWin->enable;

		if (mvDramIfWinSet(target, &addrDecWin) != MV_OK) {
			mvOsPrintf("mvCpuIfTargetWinSet: mvDramIfWinSet Failed\n");
			return MV_ERROR;
		}
	} else {
		/* copy relevant data to MV_AHB_TO_MBUS_DEC_WIN structure */
		decWin.addrWin.baseLow = pAddrDecWin->addrWin.baseLow;
		decWin.addrWin.baseHigh = pAddrDecWin->addrWin.baseHigh;
		decWin.addrWin.size = pAddrDecWin->addrWin.size;
		decWin.enable = pAddrDecWin->enable;
		decWin.target = target;

		existingWinNum = mvAhbToMbusWinTargetGet(target);

		/* check if there is already another Window configured
		   for this target */
		if ((existingWinNum < MAX_AHB_TO_MBUS_WINS) && (existingWinNum != pAddrDecWin->winNum)) {
			/* if we want to enable the new window number
			   passed by the user , then the old one should
			   be disabled */
			if (MV_TRUE == pAddrDecWin->enable) {
				/* be sure it is disabled */
				mvAhbToMbusWinEnable(existingWinNum, MV_FALSE);
			}
		}

		if (mvAhbToMbusWinSet(pAddrDecWin->winNum, &decWin) != MV_OK) {
			mvOsPrintf("mvCpuIfTargetWinSet: mvAhbToMbusWinSet Failed\n");
			return MV_ERROR;
		}
	}

	return MV_OK;
}

/*******************************************************************************
* mvCpuIfTargetWinGet - Get CPU-to-peripheral target address window
*
* DESCRIPTION:
*		Get the CPU peripheral target address window.
*
* INPUT:
*       target - Peripheral target enumerator
*
* OUTPUT:
*       pAddrDecWin - CPU target window information data structure.
*
* RETURN:
*       MV_OK if target exist, MV_ERROR otherwise.
*
*******************************************************************************/
MV_STATUS mvCpuIfTargetWinGet(MV_TARGET target, MV_CPU_DEC_WIN *pAddrDecWin)
{
	MV_U32 winNum = 0xffffffff;
	MV_AHB_TO_MBUS_DEC_WIN decWin;
	MV_DRAM_DEC_WIN addrDecWin;

	target = MV_CHANGE_BOOT_CS(target);

	/* Check parameters */
	if (target >= MAX_TARGETS) {
		mvOsPrintf("mvCpuIfTargetWinGet: target %d is illegal\n", target);
		return MV_ERROR;
	}

	if (MV_TARGET_IS_DRAM(target)) {
		if (mvDramIfWinGet(target, &addrDecWin) != MV_OK) {
			mvOsPrintf("mvCpuIfTargetWinGet: Failed to get window target %d\n", target);
			return MV_ERROR;
		}

		/* copy relevant data to MV_CPU_DEC_WIN structure */
		pAddrDecWin->addrWin.baseLow = addrDecWin.addrWin.baseLow;
		pAddrDecWin->addrWin.baseHigh = addrDecWin.addrWin.baseHigh;
		pAddrDecWin->addrWin.size = (MV_U64)addrDecWin.addrWin.size;
		pAddrDecWin->enable = addrDecWin.enable;
		pAddrDecWin->winNum = target;
	} else {
		/* get the Window number associated with this target */
		winNum = mvAhbToMbusWinTargetGet(target);
		if (winNum >= MAX_AHB_TO_MBUS_WINS)
			return MV_NO_SUCH;

		if (mvAhbToMbusWinGet(winNum, &decWin) != MV_OK) {
			mvOsPrintf("%s: mvAhbToMbusWinGet Failed at winNum = %d\n", __func__, winNum);
			return MV_ERROR;
		}

		/* copy relevant data to MV_CPU_DEC_WIN structure */
		pAddrDecWin->addrWin.baseLow = decWin.addrWin.baseLow;
		pAddrDecWin->addrWin.baseHigh = decWin.addrWin.baseHigh;
		pAddrDecWin->addrWin.size = decWin.addrWin.size;
		pAddrDecWin->enable = decWin.enable;
		pAddrDecWin->winNum = winNum;
	}

	return MV_OK;
}

/*******************************************************************************
* mvCpuIfTargetWinEnable - Enable/disable a CPU address decode window
*
* DESCRIPTION:
*       This function enable/disable a CPU address decode window.
*       if parameter 'enable' == MV_TRUE the routine will enable the
*       window, thus enabling CPU accesses (before enabling the window it is
*       tested for overlapping). Otherwise, the window will be disabled.
*
* INPUT:
*       target - Peripheral target enumerator.
*       enable - Enable/disable parameter.
*
* OUTPUT:
*       N/A
*
* RETURN:
*       MV_ERROR if protection window number was wrong, or the window
*       overlapps other target window.
*
*******************************************************************************/
MV_STATUS mvCpuIfTargetWinEnable(MV_TARGET target, MV_BOOL enable)
{
	MV_U32 winNum, temp;
	MV_CPU_DEC_WIN addrDecWin;

	target = MV_CHANGE_BOOT_CS(target);

	/* Check parameters */
	if (target >= MAX_TARGETS) {
		mvOsPrintf("mvCpuIfTargetWinEnable: target %d is illegal\n", target);
		return MV_ERROR;
	}

	/* get the window and check if it exist */
	temp = mvCpuIfTargetWinGet(target, &addrDecWin);
	if (MV_NO_SUCH == temp) {
		return (enable ? MV_ERROR : MV_OK);
	} else if (MV_OK != temp) {
		mvOsPrintf("%s: ERR. Getting target %d failed.\n", __func__, target);
		return MV_ERROR;
	}

	/* check overlap */
	if (MV_TRUE == enable) {
		if (MV_TRUE == cpuTargetWinOverlap(target, &addrDecWin.addrWin)) {
			DB(mvOsPrintf("%s: ERR. Target %d overlap\n", __func__, target));
			return MV_ERROR;
		}
	}

	if (MV_TARGET_IS_DRAM(target)) {
		if (mvDramIfWinEnable(target, enable) != MV_OK) {
			mvOsPrintf("mvCpuIfTargetWinGet: mvDramIfWinEnable Failed at \n");
			return MV_ERROR;
		}
	} else {
		/* get the Window number associated with this target */
		winNum = mvAhbToMbusWinTargetGet(target);

		if (winNum >= MAX_AHB_TO_MBUS_WINS)
			return (enable ? MV_ERROR : MV_OK);

		if (mvAhbToMbusWinEnable(winNum, enable) != MV_OK) {
			mvOsPrintf("mvCpuIfTargetWinGet: Failed to enable window = %d\n", winNum);
			return MV_ERROR;
		}
	}

	return MV_OK;
}

/*******************************************************************************
* mvCpuIfTargetWinSizeGet - Get CPU target address window size
*
* DESCRIPTION:
*		Get the size of CPU-to-peripheral target window.
*
* INPUT:
*       target - Peripheral target enumerator
*
* OUTPUT:
*       None.
*
* RETURN:
*       32bit size. Function also returns '0' if window is closed.
*		Function returns 0xFFFFFFFF in case of an error.
*
*******************************************************************************/
MV_U32 mvCpuIfTargetWinSizeGet(MV_TARGET target)
{
	MV_CPU_DEC_WIN addrDecWin;

	target = MV_CHANGE_BOOT_CS(target);

	/* Check parameters */
	if (target >= MAX_TARGETS) {
		mvOsPrintf("mvCpuIfTargetWinSizeGet: target %d is illegal\n", target);
		return 0;
	}

	/* Get the winNum window */
	if (MV_OK != mvCpuIfTargetWinGet(target, &addrDecWin)) {
		mvOsPrintf("mvCpuIfTargetWinSizeGet:ERR. Getting target %d failed.\n", target);
		return 0;
	}

	/* Check if window is enabled   */
	if (addrDecWin.enable == MV_TRUE)
		return (addrDecWin.addrWin.size);
	else
		return 0;	/* Window disabled. return 0 */
}

/*******************************************************************************
* mvCpuIfTargetWinBaseLowGet - Get CPU target address window base low
*
* DESCRIPTION:
*       CPU-to-peripheral target address window base is constructed of
*       two parts: Low and high.
*		This function gets the CPU peripheral target low base address.
*
* INPUT:
*       target - Peripheral target enumerator
*
* OUTPUT:
*       None.
*
* RETURN:
*       32bit low base address.
*
*******************************************************************************/
MV_U32 mvCpuIfTargetWinBaseLowGet(MV_TARGET target)
{
	MV_CPU_DEC_WIN addrDecWin;

	target = MV_CHANGE_BOOT_CS(target);

	/* Check parameters */
	if (target >= MAX_TARGETS) {
		mvOsPrintf("mvCpuIfTargetWinBaseLowGet: target %d is illegal\n", target);
		return 0xffffffff;
	}

	/* Get the target window */
	if (MV_OK != mvCpuIfTargetWinGet(target, &addrDecWin)) {
		mvOsPrintf("mvCpuIfTargetWinBaseLowGet:ERR. Getting target %d failed.\n", target);
		return 0xffffffff;
	}

	if (MV_FALSE == addrDecWin.enable)
		return 0xffffffff;

	return (addrDecWin.addrWin.baseLow);
}

/*******************************************************************************
* mvCpuIfTargetWinBaseHighGet - Get CPU target address window base high
*
* DESCRIPTION:
*       CPU-to-peripheral target address window base is constructed of
*       two parts: Low and high.
*		This function gets the CPU peripheral target high base address.
*
* INPUT:
*       target - Peripheral target enumerator
*
* OUTPUT:
*       None.
*
* RETURN:
*       32bit high base address.
*
*******************************************************************************/
MV_U32 mvCpuIfTargetWinBaseHighGet(MV_TARGET target)
{
	MV_CPU_DEC_WIN addrDecWin;

	target = MV_CHANGE_BOOT_CS(target);

	/* Check parameters */
	if (target >= MAX_TARGETS) {
		mvOsPrintf("mvCpuIfTargetWinBaseLowGet: target %d is illegal\n", target);
		return 0xffffffff;
	}

	/* Get the target window */
	if (MV_OK != mvCpuIfTargetWinGet(target, &addrDecWin)) {
		mvOsPrintf("mvCpuIfTargetWinBaseHighGet:ERR. Getting target %d failed.\n", target);
		return 0xffffffff;
	}

	if (MV_FALSE == addrDecWin.enable)
		return 0;

	return (addrDecWin.addrWin.baseHigh);
}


/*******************************************************************************
* mvCpuIfSramWinDisable
*
* DESCRIPTION:
*	Disable the SRAM windows.
*
* INPUT:
*		None.
*
* OUTPUT:
*       None.
*
* RETURN:
*       MV_OK on success.
*
*******************************************************************************/
MV_STATUS mvCpuIfSramWinDisable(MV_VOID)
{
	MV_U32 i;

	for (i = 0; i < 4; i++)
		MV_REG_WRITE(SRAM_WIN_CTRL_REG(i), SRAM_WIN_CTRL_DEFAULT_VAL);

	return MV_OK;
}


#if defined(MV_INCLUDE_PEX)
/*******************************************************************************
* mvCpuIfPexRemap - Set CPU remap register for address windows.
*
* DESCRIPTION:
*
* INPUT:
*       pexTarget   - Peripheral target enumerator. Must be a PEX target.
*       pAddrDecWin - CPU target window information data structure.
*                     Note that caller has to fill in the base field only. The
*                     size field is ignored.
*
* OUTPUT:
*       None.
*
* RETURN:
*       MV_ERROR if target is not a PEX one, MV_OK otherwise.
*
*******************************************************************************/
MV_U32 mvCpuIfPexRemap(MV_TARGET pexTarget, MV_ADDR_WIN *pAddrDecWin)
{
	MV_U32 winNum;

	/* Check parameters */
	if ((!MV_TARGET_IS_PEX0(pexTarget)) && (!MV_TARGET_IS_PEX1(pexTarget)) &&
	    (!MV_TARGET_IS_PEX2(pexTarget)) && (!MV_TARGET_IS_PEX3(pexTarget))) {
		mvOsPrintf("mvCpuIfPexRemap: target %d is illegal\n", pexTarget);
		return 0xffffffff;
	}

	/* get the Window number associated with this target */
	winNum = mvAhbToMbusWinTargetGet(pexTarget);

	if (winNum >= MAX_AHB_TO_MBUS_WINS) {
		mvOsPrintf("mvCpuIfPexRemap: mvAhbToMbusWinTargetGet Failed\n");
		return 0xffffffff;
	}

	return mvAhbToMbusWinRemap(winNum, pAddrDecWin);
}
#endif

#if defined(MV_INCLUDE_PCI)
/*******************************************************************************
* mvCpuIfPciRemap - Set CPU remap register for address windows.
*
* DESCRIPTION:
*
* INPUT:
*       pciTarget   - Peripheral target enumerator. Must be a PCI target.
*       pAddrDecWin - CPU target window information data structure.
*                     Note that caller has to fill in the base field only. The
*                     size field is ignored.
*
* OUTPUT:
*       None.
*
* RETURN:
*       MV_ERROR if target is not a PCI one, MV_OK otherwise.
*
*******************************************************************************/
MV_U32 mvCpuIfPciRemap(MV_TARGET pciIfTarget, MV_ADDR_WIN *pAddrDecWin)
{
	MV_U32 winNum;

	/* get the Window number associated with this target */
	winNum = mvAhbToMbusWinTargetGet(pciIfTarget);

	if (winNum >= MAX_AHB_TO_MBUS_WINS) {
		mvOsPrintf("mvCpuIfPexRemap: mvAhbToMbusWinTargetGet Failed\n");
		return 0xffffffff;
	}

	return mvAhbToMbusWinRemap(winNum, pAddrDecWin);
}
#endif

/*******************************************************************************
* mvCpuIfTargetOfBaseAddressGet - Get the target according to base address
*
* DESCRIPTION:
*
* INPUT:
*       baseAddress -  base address to be checked
*
* OUTPUT:
*       None.
*
* RETURN:
*       the target number that baseAddress belongs to or MAX_TARGETS is not
*       found
*
*******************************************************************************/
MV_TARGET mvCpuIfTargetOfBaseAddressGet(MV_U32 baseAddress)
{
	MV_CPU_DEC_WIN win;
	MV_U32 target;

	for (target = 0; target < MAX_TARGETS; target++) {
		if (mvCpuIfTargetWinGet(target, &win) == MV_OK) {
			if (win.enable) {
				if ((baseAddress >= win.addrWin.baseLow) &&
				    (baseAddress < win.addrWin.baseLow + win.addrWin.size))
					break;
			}
		} else
			return MAX_TARGETS;
	}

	return target;
}

/*******************************************************************************
* cpuTargetWinOverlap - Detect CPU address decode windows overlapping
*
* DESCRIPTION:
*       An unpredicted behaviur is expected in case CPU address decode
*       windows overlapps.
*       This function detects CPU address decode windows overlapping of a
*       specified target. The function does not check the target itself for
*       overlapping. The function also skipps disabled address decode windows.
*
* INPUT:
*       target      - Peripheral target enumerator.
*       pAddrDecWin - An address decode window struct.
*
* OUTPUT:
*       None.
*
* RETURN:
*       MV_TRUE if the given address window overlaps current address
*       decode map, MV_FALSE otherwise.
*
*******************************************************************************/
static MV_BOOL cpuTargetWinOverlap(MV_TARGET target, MV_ADDR_WIN *pAddrWin)
{
	MV_U32 targetNum;
	MV_CPU_DEC_WIN addrDecWin;
	MV_STATUS status;

	for (targetNum = 0; targetNum < MAX_TARGETS; targetNum++) {
		/* don't check our target or illegal targets */
		if (targetNum == target)
			continue;

		/* Get window parameters        */
		status = mvCpuIfTargetWinGet(targetNum, &addrDecWin);
		if (MV_NO_SUCH == status)
			continue;

		if (MV_OK != status) {
			DB(mvOsPrintf("cpuTargetWinOverlap: ERR. TargetWinGet failed\n"));
			return MV_TRUE;
		}

		/* Do not check disabled windows        */
		if (MV_FALSE == addrDecWin.enable)
			continue;

		if (MV_TRUE == mvWinOverlapTest(pAddrWin, &addrDecWin.addrWin)) {
			DB(mvOsPrintf("cpuTargetWinOverlap: Required target %d overlap current %d\n",
				      target, targetNum));
			return MV_TRUE;
		}
	}

	return MV_FALSE;
}

/*******************************************************************************
* mvCpuIfAddDecShow - Print the CPU address decode map.
*
* DESCRIPTION:
*		This function print the CPU address decode map.
*
* INPUT:
*       None.
*
* OUTPUT:
*       None.
*
* RETURN:
*       None.
*
*******************************************************************************/
MV_VOID mvCpuIfAddDecShow(MV_VOID)
{
	MV_CPU_DEC_WIN win;
	MV_U32 target;

	mvOsOutput("\n");
	mvOsOutput("CPU Interface\n");
	mvOsOutput("-------------\n");

	for (target = 0; target < MAX_TARGETS; target++) {
		memset(&win, 0, sizeof(MV_CPU_DEC_WIN));

		mvOsOutput("%s ", mvCtrlTargetNameGet(target));
		mvOsOutput("....");

		if (mvCpuIfTargetWinGet(target, &win) == MV_OK) {
			if (win.enable) {
				mvOsOutput("base %01x%08x, ", win.addrWin.baseHigh, win.addrWin.baseLow);
				mvSizePrint(win.addrWin.size);
				mvOsOutput("\n");
			} else
				mvOsOutput("disable\n");
		} else if (mvCpuIfTargetWinGet(target, &win) == MV_NO_SUCH) {
			mvOsOutput("no such\n");
		}
	}
}

/*******************************************************************************
* mvCpuIfLvdsPadsEnable
*
* DESCRIPTION:
*	Enable / Disable the LVDS pads.
*
* INPUT:
*	enable - MV_TRUE to enable the pads, MV_FALSE to disable.
*
* OUTPUT:
*       None.
*
* RETURN:
*       MV_OK on success.
*
*******************************************************************************/
MV_STATUS mvCpuIfLvdsPadsEnable(MV_BOOL enable)
{
	MV_U32 reg;
	MV_U32 i;

	reg = MV_REG_READ(LVDS_PADS_CTRL_REG);

	for (i = 0; i < 5; i++) {
		reg &= ~LVDS_PADS_CONF_PD_MASK(i);
		reg |= LVDS_PADS_CONF_PD_EN(i, enable);
	}

	MV_REG_WRITE(LVDS_PADS_CTRL_REG, reg);

	return MV_OK;
}

/*******************************************************************************
* mvCpuIfL2FilterSet
*
* DESCRIPTION:
*	Set L2 Filter base - IO prioritization filter
*
* INPUT:
*	L2 base value
*
* OUTPUT:
*       None.
*
* RETURN:
*       None.
*
*******************************************************************************/
MV_VOID mvCpuIfL2FilterSet(MV_U32 base)
{
	/* 0.25GB reserved for IO - verify no collision with IO @ 3.75GB (0xf000000) */
	if (base > 0xf0000000) {
		mvOsPrintf("Error: Requested L2 base (%x) overlaps with IO at 3.75GB\n", base);
		return;
	}

	MV_REG_WRITE(L2_FILTER_BASE_REG, base);
}

/*******************************************************************************
* mvCpuIfMbusWindowSet
*
* DESCRIPTION:
*	Set Mbus Bridge Window register
*
* INPUT:
*	Windows Base Address
*
* OUTPUT:
*       None.
*
* RETURN:
*       None.
*
*******************************************************************************/
MV_VOID mvCpuIfMbusWindowSet(MV_U32 base, MV_U32 size)
{
	MV_U32 reg;

	/* Align L2 (IO) filter with MBUS base */
	mvCpuIfL2FilterSet(base);

	MV_REG_WRITE(MBUS_BRIDGE_WIN_BASE_REG, base);
	/* Align window size to 64KB */
	size = ((size / _64K) - 1) << BRIDGWCR_SIZE_OFFS;
	reg = MV_REG_READ(MBUS_BRIDGE_WIN_CTRL_REG);
	reg &= ~BRIDGWCR_SIZE_MASK;
	reg |= (size & BRIDGWCR_SIZE_MASK);
	MV_REG_WRITE(MBUS_BRIDGE_WIN_CTRL_REG, reg);
}