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/* $NoKeywords:$ */
/**
* @file
*
* AMD CPU Warm Reset Implementation.
*
* Implement Warm Reset Interface.
*
* @xrefitem bom "File Content Label" "Release Content"
* @e project: AGESA
* @e sub-project: CPU
* @e \$Revision: 63425 $ @e \$Date: 2011-12-22 11:24:10 -0600 (Thu, 22 Dec 2011) $
*
*/
/*
******************************************************************************
*
* Copyright (c) 2008 - 2012, Advanced Micro Devices, Inc.
* All rights reserved.
*
* 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.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Advanced Micro Devices, Inc. nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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 ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
******************************************************************************
*/
/*----------------------------------------------------------------------------------------
* M O D U L E S U S E D
*----------------------------------------------------------------------------------------
*/
#include "AGESA.h"
#include "cpuRegisters.h"
#include "cpuServices.h"
#include "cpuFamilyTranslation.h"
#include "Filecode.h"
CODE_GROUP (G1_PEICC)
RDATA_GROUP (G1_PEICC)
#define FILECODE PROC_CPU_CPUWARMRESET_FILECODE
/*----------------------------------------------------------------------------------------
* D E F I N I T I O N S A N D M A C R O S
*----------------------------------------------------------------------------------------
*/
/*----------------------------------------------------------------------------------------
* T Y P E D E F S A N D S T R U C T U R E S
*----------------------------------------------------------------------------------------
*/
/*----------------------------------------------------------------------------------------
* P R O T O T Y P E S O F L O C A L F U N C T I O N S
*----------------------------------------------------------------------------------------
*/
/*----------------------------------------------------------------------------------------
* E X P O R T E D F U N C T I O N S
*----------------------------------------------------------------------------------------
*/
/*---------------------------------------------------------------------------------------*/
/**
* This function will set the CPU register warm reset bits.
*
* Note: This function will be called by UEFI BIOS's
* The UEFI wrapper code should register this function, to be called back later point
* in time, before the wrapper code does warm reset.
*
* @param[in] StdHeader Config handle for library and services
* @param[in] Request Indicate warm reset status
*
*---------------------------------------------------------------------------------------
**/
VOID
SetWarmResetFlag (
IN AMD_CONFIG_PARAMS *StdHeader,
IN WARM_RESET_REQUEST *Request
)
{
CPU_SPECIFIC_SERVICES *FamilySpecificServices;
FamilySpecificServices = NULL;
GetCpuServicesOfCurrentCore ((CONST CPU_SPECIFIC_SERVICES **)&FamilySpecificServices, StdHeader);
FamilySpecificServices->SetWarmResetFlag (FamilySpecificServices, StdHeader, Request);
}
/*---------------------------------------------------------------------------------------*/
/**
* This function will get the CPU register warm reset bits.
*
* Note: This function will be called by UEFI BIOS's
* The UEFI wrapper code should register this function, to be called back later point
* in time, before the wrapper code does warm reset.
*
* @param[in] StdHeader Config handle for library and services
* @param[out] Request Indicate warm reset status
*
*---------------------------------------------------------------------------------------
**/
VOID
GetWarmResetFlag (
IN AMD_CONFIG_PARAMS *StdHeader,
OUT WARM_RESET_REQUEST *Request
)
{
CPU_SPECIFIC_SERVICES *FamilySpecificServices;
FamilySpecificServices = NULL;
GetCpuServicesOfCurrentCore ((CONST CPU_SPECIFIC_SERVICES **)&FamilySpecificServices, StdHeader);
FamilySpecificServices->GetWarmResetFlag (FamilySpecificServices, StdHeader, Request);
switch (StdHeader->Func) {
case AMD_INIT_RESET:
Request->PostStage = (UINT8) WR_STATE_RESET;
break;
case AMD_INIT_EARLY:
Request->PostStage = (UINT8) WR_STATE_EARLY;
break;
case AMD_INIT_POST:
// Fall through to default case
default:
Request->PostStage = (UINT8) WR_STATE_POST;
break;
}
}
/*----------------------------------------------------------------------------------------
* E X P O R T E D F U N C T I O N S - (AGESA ONLY)
*----------------------------------------------------------------------------------------
*/
/*---------------------------------------------------------------------------------------*/
/**
* Is this boot a warm reset?
*
* This function reads the CPU register warm reset bit that is preserved after a warm reset.
* Which in fact gets set before issuing warm reset. We just use the BSP's register always.
*
* @param[in] StdHeader Config handle for library and services
*
* @retval TRUE Warm Reset
* @retval FALSE Not Warm Reset
*
*/
BOOLEAN
IsWarmReset (
IN AMD_CONFIG_PARAMS *StdHeader
)
{
UINT8 PostStage;
WARM_RESET_REQUEST Request;
BOOLEAN WarmReset;
CPU_SPECIFIC_SERVICES *FamilySpecificServices;
FamilySpecificServices = NULL;
switch (StdHeader->Func) {
case AMD_INIT_RESET:
PostStage = WR_STATE_RESET;
break;
case AMD_INIT_EARLY:
PostStage = WR_STATE_EARLY;
break;
case AMD_INIT_POST:
default:
PostStage = WR_STATE_POST;
break;
}
GetCpuServicesOfCurrentCore ((CONST CPU_SPECIFIC_SERVICES **)&FamilySpecificServices, StdHeader);
FamilySpecificServices->GetWarmResetFlag (FamilySpecificServices, StdHeader, &Request);
if (Request.StateBits >= PostStage) {
WarmReset = TRUE;
} else {
WarmReset = FALSE;
}
return WarmReset;
}
/*---------------------------------------------------------------------------------------*/
/**
* This function will set the CPU register warm reset bits at AmdInitEarly if it is
* currently in cold boot. To request for a warm reset, set the RequestBit to TRUE
* and the StateBits to (current poststage - 1)
*
* @param[in] Data The table data value (unused in this routine)
* @param[in] StdHeader Config handle for library and services
*
*---------------------------------------------------------------------------------------
**/
VOID
SetWarmResetAtEarly (
IN UINT32 Data,
IN AMD_CONFIG_PARAMS *StdHeader
)
{
WARM_RESET_REQUEST Request;
if (!IsWarmReset (StdHeader)) {
GetWarmResetFlag (StdHeader, &Request);
Request.RequestBit = TRUE;
Request.StateBits = (Request.PostStage - 1);
SetWarmResetFlag (StdHeader, &Request);
}
}
/*----------------------------------------------------------------------------------------
* L O C A L F U N C T I O N S
*----------------------------------------------------------------------------------------
*/
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