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Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/UefiCpuPkg/Library/RegisterCpuFeaturesLib/PeiRegisterCpuFeaturesLib.c')
| -rw-r--r-- | src/VBox/Devices/EFI/Firmware/UefiCpuPkg/Library/RegisterCpuFeaturesLib/PeiRegisterCpuFeaturesLib.c | 309 |
1 files changed, 309 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/UefiCpuPkg/Library/RegisterCpuFeaturesLib/PeiRegisterCpuFeaturesLib.c b/src/VBox/Devices/EFI/Firmware/UefiCpuPkg/Library/RegisterCpuFeaturesLib/PeiRegisterCpuFeaturesLib.c new file mode 100644 index 00000000..860a5295 --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/UefiCpuPkg/Library/RegisterCpuFeaturesLib/PeiRegisterCpuFeaturesLib.c @@ -0,0 +1,309 @@ +/** @file + CPU Register Table Library functions. + + Copyright (c) 2016 - 2020, Intel Corporation. All rights reserved.<BR> + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include <PiPei.h> + +#include <Library/HobLib.h> +#include <Library/PeiServicesLib.h> +#include <Library/PeiServicesTablePointerLib.h> +#include <Ppi/MpServices2.h> + +#include "RegisterCpuFeatures.h" + +#define REGISTER_CPU_FEATURES_GUID \ + { \ + 0xa694c467, 0x697a, 0x446b, { 0xb9, 0x29, 0x5b, 0x14, 0xa0, 0xcf, 0x39, 0xf } \ + } + +EFI_GUID mRegisterCpuFeaturesHobGuid = REGISTER_CPU_FEATURES_GUID; + +/** + Worker function to get CPU_FEATURES_DATA pointer. + + @return Pointer to CPU_FEATURES_DATA. +**/ +CPU_FEATURES_DATA * +GetCpuFeaturesData ( + VOID + ) +{ + CPU_FEATURES_DATA *CpuInitData; + EFI_HOB_GUID_TYPE *GuidHob; + VOID *DataInHob; + UINT64 Data64; + + CpuInitData = NULL; + GuidHob = GetFirstGuidHob (&mRegisterCpuFeaturesHobGuid); + if (GuidHob != NULL) { + DataInHob = GET_GUID_HOB_DATA (GuidHob); + CpuInitData = (CPU_FEATURES_DATA *) (*(UINTN *) DataInHob); + ASSERT (CpuInitData != NULL); + } else { + CpuInitData = AllocateZeroPool (sizeof (CPU_FEATURES_DATA)); + ASSERT (CpuInitData != NULL); + // + // Build location of CPU MP DATA buffer in HOB + // + Data64 = (UINT64) (UINTN) CpuInitData; + BuildGuidDataHob ( + &mRegisterCpuFeaturesHobGuid, + (VOID *) &Data64, + sizeof (UINT64) + ); + } + + return CpuInitData; +} + +/** + Worker function to get MP PPI service pointer. + + @return MP_SERVICES variable. +**/ +MP_SERVICES +GetMpService ( + VOID + ) +{ + EFI_STATUS Status; + MP_SERVICES MpService; + + // + // Get MP Services2 Ppi + // + Status = PeiServicesLocatePpi ( + &gEdkiiPeiMpServices2PpiGuid, + 0, + NULL, + (VOID **)&MpService.Ppi + ); + ASSERT_EFI_ERROR (Status); + return MpService; +} + +/** + Worker function to return processor index. + + @param CpuFeaturesData Cpu Feature Data structure. + + @return The processor index. +**/ +UINTN +GetProcessorIndex ( + IN CPU_FEATURES_DATA *CpuFeaturesData + ) +{ + EFI_STATUS Status; + EDKII_PEI_MP_SERVICES2_PPI *CpuMp2Ppi; + UINTN ProcessorIndex; + + CpuMp2Ppi = CpuFeaturesData->MpService.Ppi; + + // + // For two reasons which use NULL for WhoAmI: + // 1. This function will be called by APs and AP should not use PeiServices Table + // 2. Check WhoAmI implementation, this parameter will not be used. + // + Status = CpuMp2Ppi->WhoAmI (CpuMp2Ppi, &ProcessorIndex); + ASSERT_EFI_ERROR (Status); + return ProcessorIndex; +} + +/** + Worker function to MP-related information on the requested processor at the + instant this call is made. + + @param[in] ProcessorNumber The handle number of processor. + @param[out] ProcessorInfoBuffer A pointer to the buffer where information for + the requested processor is deposited. + + @return Status of MpServices->GetProcessorInfo(). +**/ +EFI_STATUS +GetProcessorInformation ( + IN UINTN ProcessorNumber, + OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer + ) +{ + EDKII_PEI_MP_SERVICES2_PPI *CpuMp2Ppi; + EFI_STATUS Status; + CPU_FEATURES_DATA *CpuFeaturesData; + + CpuFeaturesData = GetCpuFeaturesData (); + CpuMp2Ppi = CpuFeaturesData->MpService.Ppi; + + Status = CpuMp2Ppi->GetProcessorInfo ( + CpuMp2Ppi, + ProcessorNumber, + ProcessorInfoBuffer + ); + return Status; +} + +/** + Worker function to execute a caller provided function on all enabled APs. + + @param[in] Procedure A pointer to the function to be run on + enabled APs of the system. + @param[in] MpEvent The Event used to sync the result. + +**/ +VOID +StartupAllAPsWorker ( + IN EFI_AP_PROCEDURE Procedure, + IN EFI_EVENT MpEvent + ) +{ + EFI_STATUS Status; + EDKII_PEI_MP_SERVICES2_PPI *CpuMp2Ppi; + CPU_FEATURES_DATA *CpuFeaturesData; + + CpuFeaturesData = GetCpuFeaturesData (); + CpuMp2Ppi = CpuFeaturesData->MpService.Ppi; + + // + // Wakeup all APs for data collection. + // + Status = CpuMp2Ppi->StartupAllAPs ( + CpuMp2Ppi, + Procedure, + FALSE, + 0, + CpuFeaturesData + ); + ASSERT_EFI_ERROR (Status); +} + +/** + Worker function to execute a caller provided function on all enabled CPUs. + + @param[in] Procedure A pointer to the function to be run on + enabled CPUs of the system. + +**/ +VOID +StartupAllCPUsWorker ( + IN EFI_AP_PROCEDURE Procedure + ) +{ + EFI_STATUS Status; + EDKII_PEI_MP_SERVICES2_PPI *CpuMp2Ppi; + CPU_FEATURES_DATA *CpuFeaturesData; + + CpuFeaturesData = GetCpuFeaturesData (); + + // + // Get MP Services2 Ppi + // + CpuMp2Ppi = CpuFeaturesData->MpService.Ppi; + Status = CpuMp2Ppi->StartupAllCPUs ( + CpuMp2Ppi, + Procedure, + 0, + CpuFeaturesData + ); + ASSERT_EFI_ERROR (Status); +} + +/** + Worker function to switch the requested AP to be the BSP from that point onward. + + @param[in] ProcessorNumber The handle number of AP that is to become the new BSP. +**/ +VOID +SwitchNewBsp ( + IN UINTN ProcessorNumber + ) +{ + EFI_STATUS Status; + EDKII_PEI_MP_SERVICES2_PPI *CpuMp2Ppi; + CPU_FEATURES_DATA *CpuFeaturesData; + + CpuFeaturesData = GetCpuFeaturesData (); + CpuMp2Ppi = CpuFeaturesData->MpService.Ppi; + + // + // Wakeup all APs for data collection. + // + Status = CpuMp2Ppi->SwitchBSP ( + CpuMp2Ppi, + ProcessorNumber, + TRUE + ); + ASSERT_EFI_ERROR (Status); +} + +/** + Worker function to retrieve the number of logical processor in the platform. + + @param[out] NumberOfCpus Pointer to the total number of logical + processors in the system, including the BSP + and disabled APs. + @param[out] NumberOfEnabledProcessors Pointer to the number of enabled logical + processors that exist in system, including + the BSP. +**/ +VOID +GetNumberOfProcessor ( + OUT UINTN *NumberOfCpus, + OUT UINTN *NumberOfEnabledProcessors + ) +{ + EFI_STATUS Status; + EDKII_PEI_MP_SERVICES2_PPI *CpuMp2Ppi; + CPU_FEATURES_DATA *CpuFeaturesData; + + CpuFeaturesData = GetCpuFeaturesData (); + CpuMp2Ppi = CpuFeaturesData->MpService.Ppi; + + // + // Get the number of CPUs + // + Status = CpuMp2Ppi->GetNumberOfProcessors ( + CpuMp2Ppi, + NumberOfCpus, + NumberOfEnabledProcessors + ); + ASSERT_EFI_ERROR (Status); +} + +/** + Performs CPU features Initialization. + + This service will invoke MP service to perform CPU features + initialization on BSP/APs per user configuration. + + @note This service could be called by BSP only. +**/ +VOID +EFIAPI +CpuFeaturesInitialize ( + VOID + ) +{ + CPU_FEATURES_DATA *CpuFeaturesData; + UINTN OldBspNumber; + + CpuFeaturesData = GetCpuFeaturesData (); + + OldBspNumber = GetProcessorIndex (CpuFeaturesData); + CpuFeaturesData->BspNumber = OldBspNumber; + + // + // Start to program register for all CPUs. + // + StartupAllCPUsWorker (SetProcessorRegister); + + // + // Switch to new BSP if required + // + if (CpuFeaturesData->BspNumber != OldBspNumber) { + SwitchNewBsp (CpuFeaturesData->BspNumber); + } +} + |