/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2011 Advanced Micro Devices, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "agesawrapper.h"
#include "BiosCallOuts.h"

#include <Lib/amdlib.h>
#include <northbridge/amd/agesa/family14/dimmSpd.h>
#include <vendorcode/amd/agesa/f14/Proc/CPU/heapManager.h>
#include <vendorcode/amd/cimx/sb800/SB800.h>
#include <stdint.h>

STATIC BIOS_CALLOUT_STRUCT BiosCallouts[] =
{
	{AGESA_ALLOCATE_BUFFER,			BiosAllocateBuffer },
	{AGESA_DEALLOCATE_BUFFER,		BiosDeallocateBuffer },
	{AGESA_DO_RESET,			BiosReset },
	{AGESA_LOCATE_BUFFER,			BiosLocateBuffer },
	{AGESA_READ_SPD,			BiosReadSpd },
	{AGESA_READ_SPD_RECOVERY,		BiosDefaultRet },
	{AGESA_RUNFUNC_ONAP,			BiosRunFuncOnAp },
	{AGESA_GNB_PCIE_SLOT_RESET,		BiosGnbPcieSlotReset },
	{AGESA_HOOKBEFORE_DRAM_INIT,		BiosHookBeforeDramInit },
	{AGESA_HOOKBEFORE_DRAM_INIT_RECOVERY,	BiosHookBeforeDramInitRecovery },
	{AGESA_HOOKBEFORE_DQS_TRAINING,		BiosHookBeforeDQSTraining },
	{AGESA_HOOKBEFORE_EXIT_SELF_REF,	BiosHookBeforeExitSelfRefresh },
};

AGESA_STATUS GetBiosCallout (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
{
	size_t i;
	AGESA_STATUS CalloutStatus;
	size_t CallOutCount = sizeof (BiosCallouts) / sizeof (BiosCallouts [0]);

	/*
	 * printk(BIOS_SPEW,"%s function: %x\n", __func__, (u32) Func);
	 */

	CalloutStatus = AGESA_UNSUPPORTED;

	for (i = 0; i < CallOutCount; i++) {
		if (BiosCallouts[i].CalloutName == Func) {
			CalloutStatus = BiosCallouts[i].CalloutPtr (Func, Data, ConfigPtr);
			return CalloutStatus;
		}
	}

	return CalloutStatus;
}

/* Call the host environment interface to provide a user hook opportunity. */
AGESA_STATUS BiosHookBeforeDQSTraining (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
{
	return AGESA_SUCCESS;
}

/* Call the host environment interface to provide a user hook opportunity. */
AGESA_STATUS BiosHookBeforeDramInit (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
{
	/* Unlike e.g. AMD Inagua, Persimmon is unable to vary the RAM voltage.
	 * Make sure the right speed settings are selected.
	 */
	((MEM_DATA_STRUCT*)ConfigPtr)->ParameterListPtr->DDR3Voltage = VOLT1_5;
	return AGESA_SUCCESS;
}

/* Call the host environment interface to provide a user hook opportunity. */
AGESA_STATUS BiosHookBeforeDramInitRecovery (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
{
	return AGESA_SUCCESS;
}

/* Call the host environment interface to provide a user hook opportunity. */
AGESA_STATUS BiosHookBeforeExitSelfRefresh (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
{
	return AGESA_SUCCESS;
}

/* PCIE slot reset control */
AGESA_STATUS BiosGnbPcieSlotReset (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
{
	AGESA_STATUS Status;
	uint32_t 		FcnData;
	PCIe_SLOT_RESET_INFO	*ResetInfo;

	uint32_t	GpioMmioAddr;
	uint32_t	AcpiMmioAddr;
	uint8_t	 Data8;
	uint16_t	Data16;

	FcnData = Data;
	ResetInfo = ConfigPtr;
	/* Get SB800 MMIO Base (AcpiMmioAddr) */
	WriteIo8(0xCD6, 0x27);
	Data8 = ReadIo8(0xCD7);
	Data16=Data8<<8;
	WriteIo8(0xCD6, 0x26);
	Data8 = ReadIo8(0xCD7);
	Data16|=Data8;
	AcpiMmioAddr = (uint32_t)Data16 << 16;
	Status = AGESA_UNSUPPORTED;
	GpioMmioAddr = AcpiMmioAddr + GPIO_BASE;
	switch (ResetInfo->ResetId)
	{
	case 46:	/* GPIO50 = SBGPIO_PCIE_RST# affects LAN0, LAN1, PCIe slot */
		switch (ResetInfo->ResetControl) {
		case AssertSlotReset:
			Data8 = Read64Mem8(GpioMmioAddr+SB_GPIO_REG50);
			Data8 &= ~(uint8_t)BIT6 ;
			Write64Mem8(GpioMmioAddr+SB_GPIO_REG50, Data8);
			Status = AGESA_SUCCESS;
			break;
		case DeassertSlotReset:
			Data8 = Read64Mem8(GpioMmioAddr+SB_GPIO_REG50);
			Data8 |= BIT6 ;
			Write64Mem8 (GpioMmioAddr+SB_GPIO_REG50, Data8);
			Status = AGESA_SUCCESS;
			break;
		}
		break;
	}
	return	Status;
}