/*******************************************************************************
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Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

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

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	notice, this list of conditions and the following disclaimer in the
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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

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

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

/* locals */

/*******************************************************************************
* mvCpuPclkGet - Get the CPU pClk (pipe clock)
*
* DESCRIPTION:
*       This routine extract the CPU core clock.
*
* INPUT:
*       None.
*
* OUTPUT:
*       None.
*
* RETURN:
*       32bit clock cycles in MHertz.
*
*******************************************************************************/
MV_U32 mvCpuPclkGet(MV_VOID)
{
	MV_FREQ_MODE freqMode;

	if (MV_ERROR != mvCtrlCpuDdrL2FreqGet(&freqMode))
		return (MV_U32)(1000000 * freqMode.cpuFreq);
	else
		return (MV_U32)MV_ERROR;
}

/*******************************************************************************
* mvCpuL2ClkGet - Get the CPU L2 (CPU bus clock)
*
* DESCRIPTION:
*       This routine extract the CPU L2 clock.
*
* RETURN:
*       32bit clock cycles in Hertz.
*
*******************************************************************************/
MV_U32 mvCpuL2ClkGet(MV_VOID)
{
	MV_FREQ_MODE freqMode;

	if (MV_ERROR != mvCtrlCpuDdrL2FreqGet(&freqMode))
		return (MV_U32)(1000000 * freqMode.l2Freq);
	else
		return (MV_U32)MV_ERROR;;
}

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

	cpuModel = mvOsCpuPartGet();
	archType = mvOsCpuThumbEEGet();

	/* The CPU module is indicated in the Processor Version Register (PVR) */
	switch (cpuModel & 0xfff) {
	case CPU_PART_ARM_V6UP:
	case CPU_PART_ARM_V7UP:
	case CPU_PART_MRVLPJ4B_UP:
		if (archType == 0x1)
			mvOsSPrintf(pNameBuff, "%s (Rev %d)", "Marvell PJ4B (581) v7", mvOsCpuRevGet());
		else
			mvOsSPrintf(pNameBuff, "%s (Rev %d)", "Marvell PJ4B (581) v6", mvOsCpuRevGet());
		break;
	case CPU_PART_MRVLPJ4B_MP:
	case CPU_PART_ARM_V6MP:
		if (archType == 0x1)
			mvOsSPrintf(pNameBuff, "%s (Rev %d)", "Marvell PJ4B (584) v7", mvOsCpuRevGet());
		else
			mvOsSPrintf(pNameBuff, "%s (Rev %d)", "Marvell PJ4B (584) v6", mvOsCpuRevGet());
		break;
	case CPU_PART_ARM_CA9:
		mvOsSPrintf(pNameBuff, "%s (Rev %d)", "ARM Cortex A9 MPCore", mvOsCpuRevGet());
		break;

	default:
		mvOsSPrintf(pNameBuff, "??? (0x%04x) (Rev %d)", cpuModel, mvOsCpuRevGet());
		break;
	}
}

#define MV_PROC_STR_SIZE 50

static void mvCpuIfGetL2EccMode(MV_8 *buf)
{
	MV_U32 regVal = MV_REG_READ(CPU_L2_AUX_CTRL_REG);
	if ((regVal & CL2ACR_ECC_MASK) == CL2ACR_ECC_EN)
		mvOsSPrintf(buf, "L2 ECC Enabled");
	else
		mvOsSPrintf(buf, "L2 ECC Disabled");
}

static void mvCpuIfGetL2ParityMode(MV_8 *buf)
{
	MV_U32 regVal = MV_REG_READ(CPU_L2_AUX_CTRL_REG);
	if ((regVal & CL2ACR_PARITY_MASK) == CL2ACR_PARITY_EN)
		mvOsSPrintf(buf, "L2 Parity Enabled");
	else
		mvOsSPrintf(buf, "L2 Parity Disabled");
}

static void mvCpuIfGetL2Mode(MV_8 *buf)
{
	MV_U32 regVal = MV_REG_READ(CPU_L2_CTRL_REG);
	if (regVal & CL2CR_L2_EN_MASK)
		mvOsSPrintf(buf, "L2 Enabled");
	else
		mvOsSPrintf(buf, "L2 Disabled");
}

static void mvCpuIfGetL2PrefetchMode(MV_8 *buf)
{				/* valid for PJ4B as well */
	MV_U32 regVal = MV_REG_READ(CPU_L2_AUX_CTRL_REG);
	if ((regVal & CL2ACR_PFU_MASK) == CL2ACR_PFU_DIS)
		mvOsSPrintf(buf, "L2 Prefetch Disabled");
	else
		mvOsSPrintf(buf, "L2 Prefetch Enabled");
}

static void mvCpuIfGetWriteAllocMode(MV_8 *buf)
{
	MV_U32 regVal = MV_REG_READ(CPU_L2_AUX_CTRL_REG);
	if ((regVal & CL2ACR_FORCE_WA_MASK) == CL2ACR_FORCE_NO_WA)
		mvOsSPrintf(buf, "L2 Write Allocate Disabled");
	else
		mvOsSPrintf(buf, "L2 Write Allocate Enabled");
}

static void mvCpuIfGetCpuStreamMode(MV_8 *buf)
{				/* valid for PJ4B as well */
	MV_U32 regVal = 0;
	__asm volatile ("mrc p15, 1, %0, c15, c1, 0" : "=r" (regVal));	/* Read Marvell extra features register */
	if (regVal & BIT29)
		mvOsSPrintf(buf, "CPU Streaming Enabled");
	else
		mvOsSPrintf(buf, "CPU Streaming Disabled");
}

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

	__asm volatile ("mrc p15, 1, %0, c15, c1, 0" : "=r" (regVal));	/* Read Marvell extra features register0 */
	mvOsPrintf("Extra Features Reg[0] = 0x%x\n", regVal);

	__asm volatile ("mrc p15, 1, %0, c15, c1, 1" : "=r" (regVal));	/* Read Marvell extra features register1 */
	mvOsPrintf("Extra Features Reg[1] = 0x%x\n", regVal);

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

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

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

	regVal = MV_REG_READ(CPU_L2_CTRL_REG);
	mvOsPrintf("L2 Control Reg = 0x%x\n", regVal);

	regVal = MV_REG_READ(CPU_L2_AUX_CTRL_REG);
	mvOsPrintf("L2 Auxilary Control Reg = 0x%x\n", regVal);

}

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

	MV_8 L2_ECC_str[MV_PROC_STR_SIZE];
	MV_8 L2_En_str[MV_PROC_STR_SIZE];
	MV_8 L2_Prefetch_str[MV_PROC_STR_SIZE];
	MV_8 Write_Alloc_str[MV_PROC_STR_SIZE];
	MV_8 Cpu_Stream_str[MV_PROC_STR_SIZE];
	MV_8 L2_Parity_str[MV_PROC_STR_SIZE];

	mvCpuIfGetL2Mode(L2_En_str);
	mvCpuIfGetL2EccMode(L2_ECC_str);
	mvCpuIfGetL2ParityMode(L2_Parity_str);
	mvCpuIfGetL2PrefetchMode(L2_Prefetch_str);
	mvCpuIfGetWriteAllocMode(Write_Alloc_str);
	mvCpuIfGetCpuStreamMode(Cpu_Stream_str);
	mvCpuIfPrintCpuRegs();

	count += mvOsSPrintf(buffer + count + index, "%s\n", L2_En_str);
	count += mvOsSPrintf(buffer + count + index, "%s\n", L2_ECC_str);
	count += mvOsSPrintf(buffer + count + index, "%s\n", L2_Parity_str);
	count += mvOsSPrintf(buffer + count + index, "%s\n", L2_Prefetch_str);
	count += mvOsSPrintf(buffer + count + index, "%s\n", Write_Alloc_str);
	count += mvOsSPrintf(buffer + count + index, "%s\n", Cpu_Stream_str);
	return count;
}

/*******************************************************************************
* whoAmI - Get the CPU ID
*
* DESCRIPTION:
*       This function returns CPU ID in multiprocessor system
*
* INPUT:
*       None.
*
* OUTPUT:
*       none.
*
* RETURN:
*       CPU ID.
*******************************************************************************/
unsigned int whoAmI(void)
{
	MV_U32 value;

	__asm__ __volatile__("mrc p15, 0, %0, c0, c0, 5   @ read CPUID reg\n" : "=r"(value) : : "memory");
	return value & 0x1;
}