diff options
Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c')
| -rw-r--r-- | src/VBox/Devices/EFI/Firmware/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c | 729 |
1 files changed, 729 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c b/src/VBox/Devices/EFI/Firmware/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c new file mode 100644 index 00000000..4ee7ef6a --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c @@ -0,0 +1,729 @@ +/** @file + MP initialize support functions for PEI phase. + + Copyright (c) 2016 - 2020, Intel Corporation. All rights reserved.<BR> + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include "MpLib.h" +#include <Library/PeiServicesLib.h> +#include <Guid/S3SmmInitDone.h> +#include <Ppi/ShadowMicrocode.h> + +/** + S3 SMM Init Done notification function. + + @param PeiServices Indirect reference to the PEI Services Table. + @param NotifyDesc Address of the notification descriptor data structure. + @param InvokePpi Address of the PPI that was invoked. + + @retval EFI_SUCCESS The function completes successfully. + +**/ +EFI_STATUS +EFIAPI +NotifyOnS3SmmInitDonePpi ( + IN EFI_PEI_SERVICES **PeiServices, + IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDesc, + IN VOID *InvokePpi + ); + + +// +// Global function +// +EFI_PEI_NOTIFY_DESCRIPTOR mS3SmmInitDoneNotifyDesc = { + EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST, + &gEdkiiS3SmmInitDoneGuid, + NotifyOnS3SmmInitDonePpi +}; + +/** + S3 SMM Init Done notification function. + + @param PeiServices Indirect reference to the PEI Services Table. + @param NotifyDesc Address of the notification descriptor data structure. + @param InvokePpi Address of the PPI that was invoked. + + @retval EFI_SUCCESS The function completes successfully. + +**/ +EFI_STATUS +EFIAPI +NotifyOnS3SmmInitDonePpi ( + IN EFI_PEI_SERVICES **PeiServices, + IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDesc, + IN VOID *InvokePpi + ) +{ + CPU_MP_DATA *CpuMpData; + + CpuMpData = GetCpuMpData (); + + // + // PiSmmCpuDxeSmm driver hardcode change the loop mode to HLT mode. + // So in this notify function, code need to check the current loop + // mode, if it is not HLT mode, code need to change loop mode back + // to the original mode. + // + if (CpuMpData->ApLoopMode != ApInHltLoop) { + CpuMpData->WakeUpByInitSipiSipi = TRUE; + } + + return EFI_SUCCESS; +} + + +/** + Enable Debug Agent to support source debugging on AP function. + +**/ +VOID +EnableDebugAgent ( + VOID + ) +{ +} + +/** + Get pointer to CPU MP Data structure. + For BSP, the pointer is retrieved from HOB. + For AP, the structure is just after IDT. + + @return The pointer to CPU MP Data structure. +**/ +CPU_MP_DATA * +GetCpuMpData ( + VOID + ) +{ + CPU_MP_DATA *CpuMpData; + MSR_IA32_APIC_BASE_REGISTER ApicBaseMsr; + IA32_DESCRIPTOR Idtr; + + ApicBaseMsr.Uint64 = AsmReadMsr64 (MSR_IA32_APIC_BASE); + if (ApicBaseMsr.Bits.BSP == 1) { + CpuMpData = GetCpuMpDataFromGuidedHob (); + ASSERT (CpuMpData != NULL); + } else { + AsmReadIdtr (&Idtr); + CpuMpData = (CPU_MP_DATA *) (Idtr.Base + Idtr.Limit + 1); + } + return CpuMpData; +} + +/** + Save the pointer to CPU MP Data structure. + + @param[in] CpuMpData The pointer to CPU MP Data structure will be saved. +**/ +VOID +SaveCpuMpData ( + IN CPU_MP_DATA *CpuMpData + ) +{ + UINT64 Data64; + // + // Build location of CPU MP DATA buffer in HOB + // + Data64 = (UINT64) (UINTN) CpuMpData; + BuildGuidDataHob ( + &mCpuInitMpLibHobGuid, + (VOID *) &Data64, + sizeof (UINT64) + ); +} + +/** + Check if AP wakeup buffer is overlapped with existing allocated buffer. + + @param[in] WakeupBufferStart AP wakeup buffer start address. + @param[in] WakeupBufferEnd AP wakeup buffer end address. + + @retval TRUE There is overlap. + @retval FALSE There is no overlap. +**/ +BOOLEAN +CheckOverlapWithAllocatedBuffer ( + IN UINT64 WakeupBufferStart, + IN UINT64 WakeupBufferEnd + ) +{ + EFI_PEI_HOB_POINTERS Hob; + EFI_HOB_MEMORY_ALLOCATION *MemoryHob; + BOOLEAN Overlapped; + UINT64 MemoryStart; + UINT64 MemoryEnd; + + Overlapped = FALSE; + // + // Get the HOB list for processing + // + Hob.Raw = GetHobList (); + // + // Collect memory ranges + // + while (!END_OF_HOB_LIST (Hob)) { + if (Hob.Header->HobType == EFI_HOB_TYPE_MEMORY_ALLOCATION) { + MemoryHob = Hob.MemoryAllocation; + MemoryStart = MemoryHob->AllocDescriptor.MemoryBaseAddress; + MemoryEnd = MemoryHob->AllocDescriptor.MemoryBaseAddress + MemoryHob->AllocDescriptor.MemoryLength; + if (!((WakeupBufferStart >= MemoryEnd) || (WakeupBufferEnd <= MemoryStart))) { + Overlapped = TRUE; + break; + } + } + Hob.Raw = GET_NEXT_HOB (Hob); + } + return Overlapped; +} + +/** + Get available system memory below 1MB by specified size. + + @param[in] WakeupBufferSize Wakeup buffer size required + + @retval other Return wakeup buffer address below 1MB. + @retval -1 Cannot find free memory below 1MB. +**/ +UINTN +GetWakeupBuffer ( + IN UINTN WakeupBufferSize + ) +{ + EFI_PEI_HOB_POINTERS Hob; + UINT64 WakeupBufferStart; + UINT64 WakeupBufferEnd; + + WakeupBufferSize = (WakeupBufferSize + SIZE_4KB - 1) & ~(SIZE_4KB - 1); + + // + // Get the HOB list for processing + // + Hob.Raw = GetHobList (); + + // + // Collect memory ranges + // + while (!END_OF_HOB_LIST (Hob)) { + if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) { + if ((Hob.ResourceDescriptor->PhysicalStart < BASE_1MB) && + (Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) && + ((Hob.ResourceDescriptor->ResourceAttribute & + (EFI_RESOURCE_ATTRIBUTE_READ_PROTECTED | + EFI_RESOURCE_ATTRIBUTE_WRITE_PROTECTED | + EFI_RESOURCE_ATTRIBUTE_EXECUTION_PROTECTED + )) == 0) + ) { + // + // Need memory under 1MB to be collected here + // + WakeupBufferEnd = Hob.ResourceDescriptor->PhysicalStart + Hob.ResourceDescriptor->ResourceLength; + if (WakeupBufferEnd > BASE_1MB) { + // + // Wakeup buffer should be under 1MB + // + WakeupBufferEnd = BASE_1MB; + } + while (WakeupBufferEnd > WakeupBufferSize) { + // + // Wakeup buffer should be aligned on 4KB + // + WakeupBufferStart = (WakeupBufferEnd - WakeupBufferSize) & ~(SIZE_4KB - 1); + if (WakeupBufferStart < Hob.ResourceDescriptor->PhysicalStart) { + break; + } + if (CheckOverlapWithAllocatedBuffer (WakeupBufferStart, WakeupBufferEnd)) { + // + // If this range is overlapped with existing allocated buffer, skip it + // and find the next range + // + WakeupBufferEnd -= WakeupBufferSize; + continue; + } + DEBUG ((DEBUG_INFO, "WakeupBufferStart = %x, WakeupBufferSize = %x\n", + WakeupBufferStart, WakeupBufferSize)); + return (UINTN)WakeupBufferStart; + } + } + } + // + // Find the next HOB + // + Hob.Raw = GET_NEXT_HOB (Hob); + } + + return (UINTN) -1; +} + +/** + Get available EfiBootServicesCode memory below 4GB by specified size. + + This buffer is required to safely transfer AP from real address mode to + protected mode or long mode, due to the fact that the buffer returned by + GetWakeupBuffer() may be marked as non-executable. + + @param[in] BufferSize Wakeup transition buffer size. + + @retval other Return wakeup transition buffer address below 4GB. + @retval 0 Cannot find free memory below 4GB. +**/ +UINTN +GetModeTransitionBuffer ( + IN UINTN BufferSize + ) +{ + // + // PEI phase doesn't need to do such transition. So simply return 0. + // + return 0; +} + +/** + Return the address of the SEV-ES AP jump table. + + This buffer is required in order for an SEV-ES guest to transition from + UEFI into an OS. + + @return Return SEV-ES AP jump table buffer +**/ +UINTN +GetSevEsAPMemory ( + VOID + ) +{ + // + // PEI phase doesn't need to do such transition. So simply return 0. + // + return 0; +} + +/** + Checks APs status and updates APs status if needed. + +**/ +VOID +CheckAndUpdateApsStatus ( + VOID + ) +{ +} + +/** + Build the microcode patch HOB that contains the base address and size of the + microcode patch stored in the memory. + + @param[in] CpuMpData Pointer to the CPU_MP_DATA structure. + +**/ +VOID +BuildMicrocodeCacheHob ( + IN CPU_MP_DATA *CpuMpData + ) +{ + EDKII_MICROCODE_PATCH_HOB *MicrocodeHob; + UINTN HobDataLength; + UINT32 Index; + + HobDataLength = sizeof (EDKII_MICROCODE_PATCH_HOB) + + sizeof (UINT64) * CpuMpData->CpuCount; + + MicrocodeHob = AllocatePool (HobDataLength); + if (MicrocodeHob == NULL) { + ASSERT (FALSE); + return; + } + + // + // Store the information of the memory region that holds the microcode patches. + // + MicrocodeHob->MicrocodePatchAddress = CpuMpData->MicrocodePatchAddress; + MicrocodeHob->MicrocodePatchRegionSize = CpuMpData->MicrocodePatchRegionSize; + + // + // Store the detected microcode patch for each processor as well. + // + MicrocodeHob->ProcessorCount = CpuMpData->CpuCount; + for (Index = 0; Index < CpuMpData->CpuCount; Index++) { + if (CpuMpData->CpuData[Index].MicrocodeEntryAddr != 0) { + MicrocodeHob->ProcessorSpecificPatchOffset[Index] = + CpuMpData->CpuData[Index].MicrocodeEntryAddr - CpuMpData->MicrocodePatchAddress; + } else { + MicrocodeHob->ProcessorSpecificPatchOffset[Index] = MAX_UINT64; + } + } + + BuildGuidDataHob ( + &gEdkiiMicrocodePatchHobGuid, + MicrocodeHob, + HobDataLength + ); + + return; +} + +/** + Initialize global data for MP support. + + @param[in] CpuMpData The pointer to CPU MP Data structure. +**/ +VOID +InitMpGlobalData ( + IN CPU_MP_DATA *CpuMpData + ) +{ + EFI_STATUS Status; + + BuildMicrocodeCacheHob (CpuMpData); + SaveCpuMpData (CpuMpData); + + /// + /// Install Notify + /// + Status = PeiServicesNotifyPpi (&mS3SmmInitDoneNotifyDesc); + ASSERT_EFI_ERROR (Status); +} + +/** + This service executes 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. See type + EFI_AP_PROCEDURE. + @param[in] SingleThread If TRUE, then all the enabled APs execute + the function specified by Procedure one by + one, in ascending order of processor handle + number. If FALSE, then all the enabled APs + execute the function specified by Procedure + simultaneously. + @param[in] WaitEvent The event created by the caller with CreateEvent() + service. If it is NULL, then execute in + blocking mode. BSP waits until all APs finish + or TimeoutInMicroSeconds expires. If it's + not NULL, then execute in non-blocking mode. + BSP requests the function specified by + Procedure to be started on all the enabled + APs, and go on executing immediately. If + all return from Procedure, or TimeoutInMicroSeconds + expires, this event is signaled. The BSP + can use the CheckEvent() or WaitForEvent() + services to check the state of event. Type + EFI_EVENT is defined in CreateEvent() in + the Unified Extensible Firmware Interface + Specification. + @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for + APs to return from Procedure, either for + blocking or non-blocking mode. Zero means + infinity. If the timeout expires before + all APs return from Procedure, then Procedure + on the failed APs is terminated. All enabled + APs are available for next function assigned + by MpInitLibStartupAllAPs() or + MPInitLibStartupThisAP(). + If the timeout expires in blocking mode, + BSP returns EFI_TIMEOUT. If the timeout + expires in non-blocking mode, WaitEvent + is signaled with SignalEvent(). + @param[in] ProcedureArgument The parameter passed into Procedure for + all APs. + @param[out] FailedCpuList If NULL, this parameter is ignored. Otherwise, + if all APs finish successfully, then its + content is set to NULL. If not all APs + finish before timeout expires, then its + content is set to address of the buffer + holding handle numbers of the failed APs. + The buffer is allocated by MP Initialization + library, and it's the caller's responsibility to + free the buffer with FreePool() service. + In blocking mode, it is ready for consumption + when the call returns. In non-blocking mode, + it is ready when WaitEvent is signaled. The + list of failed CPU is terminated by + END_OF_CPU_LIST. + + @retval EFI_SUCCESS In blocking mode, all APs have finished before + the timeout expired. + @retval EFI_SUCCESS In non-blocking mode, function has been dispatched + to all enabled APs. + @retval EFI_UNSUPPORTED A non-blocking mode request was made after the + UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was + signaled. + @retval EFI_UNSUPPORTED WaitEvent is not NULL if non-blocking mode is not + supported. + @retval EFI_DEVICE_ERROR Caller processor is AP. + @retval EFI_NOT_STARTED No enabled APs exist in the system. + @retval EFI_NOT_READY Any enabled APs are busy. + @retval EFI_NOT_READY MP Initialize Library is not initialized. + @retval EFI_TIMEOUT In blocking mode, the timeout expired before + all enabled APs have finished. + @retval EFI_INVALID_PARAMETER Procedure is NULL. + +**/ +EFI_STATUS +EFIAPI +MpInitLibStartupAllAPs ( + IN EFI_AP_PROCEDURE Procedure, + IN BOOLEAN SingleThread, + IN EFI_EVENT WaitEvent OPTIONAL, + IN UINTN TimeoutInMicroseconds, + IN VOID *ProcedureArgument OPTIONAL, + OUT UINTN **FailedCpuList OPTIONAL + ) +{ + if (WaitEvent != NULL) { + return EFI_UNSUPPORTED; + } + + return StartupAllCPUsWorker ( + Procedure, + SingleThread, + TRUE, + NULL, + TimeoutInMicroseconds, + ProcedureArgument, + FailedCpuList + ); +} + +/** + This service lets the caller get one enabled AP to execute a caller-provided + function. + + @param[in] Procedure A pointer to the function to be run on the + designated AP of the system. See type + EFI_AP_PROCEDURE. + @param[in] ProcessorNumber The handle number of the AP. The range is + from 0 to the total number of logical + processors minus 1. The total number of + logical processors can be retrieved by + MpInitLibGetNumberOfProcessors(). + @param[in] WaitEvent The event created by the caller with CreateEvent() + service. If it is NULL, then execute in + blocking mode. BSP waits until this AP finish + or TimeoutInMicroSeconds expires. If it's + not NULL, then execute in non-blocking mode. + BSP requests the function specified by + Procedure to be started on this AP, + and go on executing immediately. If this AP + return from Procedure or TimeoutInMicroSeconds + expires, this event is signaled. The BSP + can use the CheckEvent() or WaitForEvent() + services to check the state of event. Type + EFI_EVENT is defined in CreateEvent() in + the Unified Extensible Firmware Interface + Specification. + @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for + this AP to finish this Procedure, either for + blocking or non-blocking mode. Zero means + infinity. If the timeout expires before + this AP returns from Procedure, then Procedure + on the AP is terminated. The + AP is available for next function assigned + by MpInitLibStartupAllAPs() or + MpInitLibStartupThisAP(). + If the timeout expires in blocking mode, + BSP returns EFI_TIMEOUT. If the timeout + expires in non-blocking mode, WaitEvent + is signaled with SignalEvent(). + @param[in] ProcedureArgument The parameter passed into Procedure on the + specified AP. + @param[out] Finished If NULL, this parameter is ignored. In + blocking mode, this parameter is ignored. + In non-blocking mode, if AP returns from + Procedure before the timeout expires, its + content is set to TRUE. Otherwise, the + value is set to FALSE. The caller can + determine if the AP returned from Procedure + by evaluating this value. + + @retval EFI_SUCCESS In blocking mode, specified AP finished before + the timeout expires. + @retval EFI_SUCCESS In non-blocking mode, the function has been + dispatched to specified AP. + @retval EFI_UNSUPPORTED A non-blocking mode request was made after the + UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was + signaled. + @retval EFI_UNSUPPORTED WaitEvent is not NULL if non-blocking mode is not + supported. + @retval EFI_DEVICE_ERROR The calling processor is an AP. + @retval EFI_TIMEOUT In blocking mode, the timeout expired before + the specified AP has finished. + @retval EFI_NOT_READY The specified AP is busy. + @retval EFI_NOT_READY MP Initialize Library is not initialized. + @retval EFI_NOT_FOUND The processor with the handle specified by + ProcessorNumber does not exist. + @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP or disabled AP. + @retval EFI_INVALID_PARAMETER Procedure is NULL. + +**/ +EFI_STATUS +EFIAPI +MpInitLibStartupThisAP ( + IN EFI_AP_PROCEDURE Procedure, + IN UINTN ProcessorNumber, + IN EFI_EVENT WaitEvent OPTIONAL, + IN UINTN TimeoutInMicroseconds, + IN VOID *ProcedureArgument OPTIONAL, + OUT BOOLEAN *Finished OPTIONAL + ) +{ + if (WaitEvent != NULL) { + return EFI_UNSUPPORTED; + } + + return StartupThisAPWorker ( + Procedure, + ProcessorNumber, + NULL, + TimeoutInMicroseconds, + ProcedureArgument, + Finished + ); +} + +/** + This service switches the requested AP to be the BSP from that point onward. + This service changes the BSP for all purposes. This call can only be performed + by the current BSP. + + @param[in] ProcessorNumber The handle number of AP that is to become the new + BSP. The range is from 0 to the total number of + logical processors minus 1. The total number of + logical processors can be retrieved by + MpInitLibGetNumberOfProcessors(). + @param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an + enabled AP. Otherwise, it will be disabled. + + @retval EFI_SUCCESS BSP successfully switched. + @retval EFI_UNSUPPORTED Switching the BSP cannot be completed prior to + this service returning. + @retval EFI_UNSUPPORTED Switching the BSP is not supported. + @retval EFI_DEVICE_ERROR The calling processor is an AP. + @retval EFI_NOT_FOUND The processor with the handle specified by + ProcessorNumber does not exist. + @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current BSP or + a disabled AP. + @retval EFI_NOT_READY The specified AP is busy. + @retval EFI_NOT_READY MP Initialize Library is not initialized. + +**/ +EFI_STATUS +EFIAPI +MpInitLibSwitchBSP ( + IN UINTN ProcessorNumber, + IN BOOLEAN EnableOldBSP + ) +{ + return SwitchBSPWorker (ProcessorNumber, EnableOldBSP); +} + +/** + This service lets the caller enable or disable an AP from this point onward. + This service may only be called from the BSP. + + @param[in] ProcessorNumber The handle number of AP. + The range is from 0 to the total number of + logical processors minus 1. The total number of + logical processors can be retrieved by + MpInitLibGetNumberOfProcessors(). + @param[in] EnableAP Specifies the new state for the processor for + enabled, FALSE for disabled. + @param[in] HealthFlag If not NULL, a pointer to a value that specifies + the new health status of the AP. This flag + corresponds to StatusFlag defined in + EFI_MP_SERVICES_PROTOCOL.GetProcessorInfo(). Only + the PROCESSOR_HEALTH_STATUS_BIT is used. All other + bits are ignored. If it is NULL, this parameter + is ignored. + + @retval EFI_SUCCESS The specified AP was enabled or disabled successfully. + @retval EFI_UNSUPPORTED Enabling or disabling an AP cannot be completed + prior to this service returning. + @retval EFI_UNSUPPORTED Enabling or disabling an AP is not supported. + @retval EFI_DEVICE_ERROR The calling processor is an AP. + @retval EFI_NOT_FOUND Processor with the handle specified by ProcessorNumber + does not exist. + @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP. + @retval EFI_NOT_READY MP Initialize Library is not initialized. + +**/ +EFI_STATUS +EFIAPI +MpInitLibEnableDisableAP ( + IN UINTN ProcessorNumber, + IN BOOLEAN EnableAP, + IN UINT32 *HealthFlag OPTIONAL + ) +{ + return EnableDisableApWorker (ProcessorNumber, EnableAP, HealthFlag); +} + +/** + This funtion will try to invoke platform specific microcode shadow logic to + relocate microcode update patches into memory. + + @param[in, out] CpuMpData The pointer to CPU MP Data structure. + + @retval EFI_SUCCESS Shadow microcode success. + @retval EFI_OUT_OF_RESOURCES No enough resource to complete the operation. + @retval EFI_UNSUPPORTED Can't find platform specific microcode shadow + PPI/Protocol. +**/ +EFI_STATUS +PlatformShadowMicrocode ( + IN OUT CPU_MP_DATA *CpuMpData + ) +{ + EFI_STATUS Status; + EDKII_PEI_SHADOW_MICROCODE_PPI *ShadowMicrocodePpi; + UINTN CpuCount; + EDKII_PEI_MICROCODE_CPU_ID *MicrocodeCpuId; + UINTN Index; + UINTN BufferSize; + VOID *Buffer; + + Status = PeiServicesLocatePpi ( + &gEdkiiPeiShadowMicrocodePpiGuid, + 0, + NULL, + (VOID **) &ShadowMicrocodePpi + ); + if (EFI_ERROR (Status)) { + return EFI_UNSUPPORTED; + } + + CpuCount = CpuMpData->CpuCount; + MicrocodeCpuId = (EDKII_PEI_MICROCODE_CPU_ID *) AllocateZeroPool (sizeof (EDKII_PEI_MICROCODE_CPU_ID) * CpuCount); + if (MicrocodeCpuId == NULL) { + return EFI_OUT_OF_RESOURCES; + } + + for (Index = 0; Index < CpuMpData->CpuCount; Index++) { + MicrocodeCpuId[Index].ProcessorSignature = CpuMpData->CpuData[Index].ProcessorSignature; + MicrocodeCpuId[Index].PlatformId = CpuMpData->CpuData[Index].PlatformId; + } + + Status = ShadowMicrocodePpi->ShadowMicrocode ( + ShadowMicrocodePpi, + CpuCount, + MicrocodeCpuId, + &BufferSize, + &Buffer + ); + FreePool (MicrocodeCpuId); + if (EFI_ERROR (Status)) { + return EFI_NOT_FOUND; + } + + CpuMpData->MicrocodePatchAddress = (UINTN) Buffer; + CpuMpData->MicrocodePatchRegionSize = BufferSize; + + DEBUG (( + DEBUG_INFO, + "%a: Required microcode patches have been loaded at 0x%lx, with size 0x%lx.\n", + __FUNCTION__, CpuMpData->MicrocodePatchAddress, CpuMpData->MicrocodePatchRegionSize + )); + + return EFI_SUCCESS; +} |