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/*
* 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.
*/
#include "AGESA.h"
#include "amdlib.h"
#include <northbridge/amd/agesa/BiosCallOuts.h>
#include "SB800.h"
#include <southbridge/amd/cimx/sb800/gpio_oem.h>
#include <stdlib.h>
/* Should AGESA_GNB_PCIE_SLOT_RESET use agesa_NoopSuccess?
*
* COM Express doesn't provide dedicated resets for individual lanes
* and it's not needed for the on-board Intel I210 GbE controller.
*/
static AGESA_STATUS board_BeforeDramInit (UINT32 Func, UINTN Data, VOID *ConfigPtr);
const BIOS_CALLOUT_STRUCT BiosCallouts[] =
{
{AGESA_DO_RESET, agesa_Reset },
{AGESA_READ_SPD, agesa_ReadSpd },
{AGESA_READ_SPD_RECOVERY, agesa_NoopUnsupported },
{AGESA_RUNFUNC_ONAP, agesa_RunFuncOnAp },
{AGESA_GNB_PCIE_SLOT_RESET, agesa_NoopUnsupported },
{AGESA_HOOKBEFORE_DRAM_INIT, board_BeforeDramInit},
{AGESA_HOOKBEFORE_DRAM_INIT_RECOVERY, agesa_NoopSuccess },
{AGESA_HOOKBEFORE_DQS_TRAINING, agesa_NoopSuccess },
{AGESA_HOOKBEFORE_EXIT_SELF_REF, agesa_NoopSuccess },
};
const int BiosCalloutsLen = ARRAY_SIZE(BiosCallouts);
/* Call the host environment interface to provide a user hook opportunity. */
static AGESA_STATUS board_BeforeDramInit (UINT32 Func, UINTN Data, VOID *ConfigPtr)
{
MEM_DATA_STRUCT *MemData = ConfigPtr;
printk(BIOS_INFO, "Setting DDR3 voltage: ");
FCH_IOMUX(65) = 1; // GPIO65: VMEM_LV_EN# lowers VMEM from 1.5 to 1.35V
switch (MemData->ParameterListPtr->DDR3Voltage) {
case VOLT1_25: // board is not able to provide this
MemData->ParameterListPtr->DDR3Voltage = VOLT1_35; // sorry
printk(BIOS_INFO, "can't provide 1.25 V, using ");
// fall through
default: // AGESA.h says in mixed case 1.5V DIMMs get excluded
case VOLT1_35:
FCH_GPIO(65) = 0x08; // = output, disable PU, set to 0
printk(BIOS_INFO, "1.35 V\n");
break;
case VOLT1_5:
FCH_GPIO(65) = 0xC8; // = output, disable PU, set to 1
printk(BIOS_INFO, "1.5 V\n");
}
return AGESA_SUCCESS;
}
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