/* $NoKeywords:$ */ /** * @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: 35136 $ @e \$Date: 2010-07-16 11:29:48 +0800 (Fri, 16 Jul 2010) $ * */ /* ***************************************************************************** * * Copyright (c) 2011, 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 "amdlib.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 *---------------------------------------------------------------------------------------- */