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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2012 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/agesawrapper.h>
#include <northbridge/amd/agesa/BiosCallOuts.h>
#include "Ids.h"
#include "heapManager.h"
#include "SB700.h"
#include "OEM.h" /* SMBUS0_BASE_ADDRESS */
#include <stdlib.h>
#include <southbridge/amd/cimx/sb700/smbus_spd.h>
#ifdef __PRE_RAM__
/* This define is used when selecting the appropriate socket for the SPD read
* because this is a multi-socket design.
*/
#define LTC4305_SMBUS_ADDR (0x94)
static void select_socket(UINT8 socket_id)
{
AMD_CONFIG_PARAMS StdHeader;
UINT32 PciData32;
UINT8 PciData8;
PCI_ADDR PciAddress;
/* Set SMBus MMIO. */
PciAddress.AddressValue = MAKE_SBDFO (0, 0, 20, 0, 0x90);
PciData32 = (SMBUS0_BASE_ADDRESS & 0xFFFFFFF0) | BIT0;
LibAmdPciWrite(AccessWidth32, PciAddress, &PciData32, &StdHeader);
/* Enable SMBus MMIO. */
PciAddress.AddressValue = MAKE_SBDFO (0, 0, 20, 0, 0xD2);
LibAmdPciRead(AccessWidth8, PciAddress, &PciData8, &StdHeader);
PciData8 |= BIT0;
LibAmdPciWrite(AccessWidth8, PciAddress, &PciData8, &StdHeader);
switch (socket_id) {
case 0:
/* Switch onto the First CPU Socket SMBus */
writeSmbusByte(SMBUS0_BASE_ADDRESS, LTC4305_SMBUS_ADDR, 0x80, 0x03);
break;
case 1:
/* Switch onto the Second CPU Socket SMBus */
writeSmbusByte(SMBUS0_BASE_ADDRESS, LTC4305_SMBUS_ADDR, 0x40, 0x03);
break;
default:
/* Switch off two CPU Sockets SMBus */
writeSmbusByte(SMBUS0_BASE_ADDRESS, LTC4305_SMBUS_ADDR, 0x00, 0x03);
break;
}
}
static void restore_socket(void)
{
/* Switch off two CPU Sockets SMBus */
writeSmbusByte(SMBUS0_BASE_ADDRESS, LTC4305_SMBUS_ADDR, 0x00, 0x03);
}
#endif
static AGESA_STATUS board_ReadSpd (UINT32 Func, UINTN Data, VOID *ConfigPtr);
const BIOS_CALLOUT_STRUCT BiosCallouts[] =
{
{AGESA_DO_RESET, agesa_Reset },
{AGESA_READ_SPD, board_ReadSpd },
{AGESA_READ_SPD_RECOVERY, agesa_NoopUnsupported },
{AGESA_RUNFUNC_ONAP, agesa_RunFuncOnAp },
{AGESA_GNB_PCIE_SLOT_RESET, agesa_NoopSuccess },
{AGESA_GET_IDS_INIT_DATA, agesa_EmptyIdsInitData },
{AGESA_HOOKBEFORE_DRAM_INIT, agesa_NoopSuccess },
{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);
static AGESA_STATUS board_ReadSpd (UINT32 Func, UINTN Data, VOID *ConfigPtr)
{
AGESA_STATUS Status;
#ifdef __PRE_RAM__
if (ConfigPtr == NULL)
return AGESA_ERROR;
select_socket(((AGESA_READ_SPD_PARAMS *)ConfigPtr)->SocketId);
Status = agesa_ReadSpd (Func, Data, ConfigPtr);
restore_socket();
#else
Status = AGESA_UNSUPPORTED;
#endif
return Status;
}
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