/* $NoKeywords:$ */ /** * @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 2008 - 2012 ADVANCED MICRO DEVICES, INC. All Rights Reserved. * * AMD is granting you permission to use this software (the Materials) * pursuant to the terms and conditions of your Software License Agreement * with AMD. This header does *NOT* give you permission to use the Materials * or any rights under AMD's intellectual property. Your use of any portion * of these Materials shall constitute your acceptance of those terms and * conditions. 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Use of the Materials by the * Government constitutes acknowledgement of AMD's proprietary rights in them. * * EXPORT ASSURANCE: You agree and certify that neither the Materials, nor any * direct product thereof will be exported directly or indirectly, into any * country prohibited by the United States Export Administration Act and the * regulations thereunder, without the required authorization from the U.S. * government nor will be used for any purpose prohibited by the same. ****************************************************************************** */ /*---------------------------------------------------------------------------------------- * 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 *---------------------------------------------------------------------------------------- */