/** @file\r
MP initialize support functions for PEI phase.\r
\r
- Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>\r
- This program and the accompanying materials\r
- are licensed and made available under the terms and conditions of the BSD License\r
- which accompanies this distribution. The full text of the license may be found at\r
- http://opensource.org/licenses/bsd-license.php\r
-\r
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+ Copyright (c) 2016 - 2020, Intel Corporation. All rights reserved.<BR>\r
+ SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include "MpLib.h"\r
-#include <Ppi/EndOfPeiPhase.h>\r
#include <Library/PeiServicesLib.h>\r
+#include <Guid/S3SmmInitDone.h>\r
+#include <Ppi/ShadowMicrocode.h>\r
+\r
+STATIC UINT64 mSevEsPeiWakeupBuffer = BASE_1MB;\r
+\r
+/**\r
+ S3 SMM Init Done notification function.\r
+\r
+ @param PeiServices Indirect reference to the PEI Services Table.\r
+ @param NotifyDesc Address of the notification descriptor data structure.\r
+ @param InvokePpi Address of the PPI that was invoked.\r
+\r
+ @retval EFI_SUCCESS The function completes successfully.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+NotifyOnS3SmmInitDonePpi (\r
+ IN EFI_PEI_SERVICES **PeiServices,\r
+ IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDesc,\r
+ IN VOID *InvokePpi\r
+ );\r
\r
//\r
-// Global PEI notify function descriptor on EndofPei event\r
+// Global function\r
//\r
-GLOBAL_REMOVE_IF_UNREFERENCED EFI_PEI_NOTIFY_DESCRIPTOR mMpInitLibNotifyList = {\r
- (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r
- &gEfiEndOfPeiSignalPpiGuid,\r
- CpuMpEndOfPeiCallback\r
+EFI_PEI_NOTIFY_DESCRIPTOR mS3SmmInitDoneNotifyDesc = {\r
+ EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,\r
+ &gEdkiiS3SmmInitDoneGuid,\r
+ NotifyOnS3SmmInitDonePpi\r
};\r
\r
+/**\r
+ S3 SMM Init Done notification function.\r
+\r
+ @param PeiServices Indirect reference to the PEI Services Table.\r
+ @param NotifyDesc Address of the notification descriptor data structure.\r
+ @param InvokePpi Address of the PPI that was invoked.\r
+\r
+ @retval EFI_SUCCESS The function completes successfully.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+NotifyOnS3SmmInitDonePpi (\r
+ IN EFI_PEI_SERVICES **PeiServices,\r
+ IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDesc,\r
+ IN VOID *InvokePpi\r
+ )\r
+{\r
+ CPU_MP_DATA *CpuMpData;\r
+\r
+ CpuMpData = GetCpuMpData ();\r
+\r
+ //\r
+ // PiSmmCpuDxeSmm driver hardcode change the loop mode to HLT mode.\r
+ // So in this notify function, code need to check the current loop\r
+ // mode, if it is not HLT mode, code need to change loop mode back\r
+ // to the original mode.\r
+ //\r
+ if (CpuMpData->ApLoopMode != ApInHltLoop) {\r
+ CpuMpData->WakeUpByInitSipiSipi = TRUE;\r
+ }\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+/**\r
+ Enable Debug Agent to support source debugging on AP function.\r
+\r
+**/\r
+VOID\r
+EnableDebugAgent (\r
+ VOID\r
+ )\r
+{\r
+}\r
+\r
/**\r
Get pointer to CPU MP Data structure.\r
+ For BSP, the pointer is retrieved from HOB.\r
+ For AP, the structure is stored in the top of each AP's stack.\r
\r
@return The pointer to CPU MP Data structure.\r
**/\r
VOID\r
)\r
{\r
- CPU_MP_DATA *CpuMpData;\r
+ CPU_MP_DATA *CpuMpData;\r
+ MSR_IA32_APIC_BASE_REGISTER ApicBaseMsr;\r
+ UINTN ApTopOfStack;\r
+ AP_STACK_DATA *ApStackData;\r
+\r
+ ApicBaseMsr.Uint64 = AsmReadMsr64 (MSR_IA32_APIC_BASE);\r
+ if (ApicBaseMsr.Bits.BSP == 1) {\r
+ CpuMpData = GetCpuMpDataFromGuidedHob ();\r
+ ASSERT (CpuMpData != NULL);\r
+ } else {\r
+ ApTopOfStack = ALIGN_VALUE ((UINTN)&ApTopOfStack, (UINTN)PcdGet32 (PcdCpuApStackSize));\r
+ ApStackData = (AP_STACK_DATA *)((UINTN)ApTopOfStack- sizeof (AP_STACK_DATA));\r
+ CpuMpData = (CPU_MP_DATA *)ApStackData->MpData;\r
+ }\r
\r
- CpuMpData = GetCpuMpDataFromGuidedHob ();\r
- ASSERT (CpuMpData != NULL);\r
return CpuMpData;\r
}\r
\r
**/\r
VOID\r
SaveCpuMpData (\r
- IN CPU_MP_DATA *CpuMpData\r
+ IN CPU_MP_DATA *CpuMpData\r
)\r
{\r
- UINT64 Data64;\r
+ UINT64 Data64;\r
+\r
//\r
// Build location of CPU MP DATA buffer in HOB\r
//\r
- Data64 = (UINT64) (UINTN) CpuMpData;\r
+ Data64 = (UINT64)(UINTN)CpuMpData;\r
BuildGuidDataHob (\r
&mCpuInitMpLibHobGuid,\r
- (VOID *) &Data64,\r
+ (VOID *)&Data64,\r
sizeof (UINT64)\r
);\r
}\r
\r
+/**\r
+ Check if AP wakeup buffer is overlapped with existing allocated buffer.\r
+\r
+ @param[in] WakeupBufferStart AP wakeup buffer start address.\r
+ @param[in] WakeupBufferEnd AP wakeup buffer end address.\r
+\r
+ @retval TRUE There is overlap.\r
+ @retval FALSE There is no overlap.\r
+**/\r
+BOOLEAN\r
+CheckOverlapWithAllocatedBuffer (\r
+ IN UINT64 WakeupBufferStart,\r
+ IN UINT64 WakeupBufferEnd\r
+ )\r
+{\r
+ EFI_PEI_HOB_POINTERS Hob;\r
+ EFI_HOB_MEMORY_ALLOCATION *MemoryHob;\r
+ BOOLEAN Overlapped;\r
+ UINT64 MemoryStart;\r
+ UINT64 MemoryEnd;\r
+\r
+ Overlapped = FALSE;\r
+ //\r
+ // Get the HOB list for processing\r
+ //\r
+ Hob.Raw = GetHobList ();\r
+ //\r
+ // Collect memory ranges\r
+ //\r
+ while (!END_OF_HOB_LIST (Hob)) {\r
+ if (Hob.Header->HobType == EFI_HOB_TYPE_MEMORY_ALLOCATION) {\r
+ MemoryHob = Hob.MemoryAllocation;\r
+ MemoryStart = MemoryHob->AllocDescriptor.MemoryBaseAddress;\r
+ MemoryEnd = MemoryHob->AllocDescriptor.MemoryBaseAddress + MemoryHob->AllocDescriptor.MemoryLength;\r
+ if (!((WakeupBufferStart >= MemoryEnd) || (WakeupBufferEnd <= MemoryStart))) {\r
+ Overlapped = TRUE;\r
+ break;\r
+ }\r
+ }\r
+\r
+ Hob.Raw = GET_NEXT_HOB (Hob);\r
+ }\r
+\r
+ return Overlapped;\r
+}\r
+\r
+/**\r
+ Get available system memory below 1MB by specified size.\r
+\r
+ @param[in] WakeupBufferSize Wakeup buffer size required\r
+\r
+ @retval other Return wakeup buffer address below 1MB.\r
+ @retval -1 Cannot find free memory below 1MB.\r
+**/\r
+UINTN\r
+GetWakeupBuffer (\r
+ IN UINTN WakeupBufferSize\r
+ )\r
+{\r
+ EFI_PEI_HOB_POINTERS Hob;\r
+ UINT64 WakeupBufferStart;\r
+ UINT64 WakeupBufferEnd;\r
+\r
+ WakeupBufferSize = (WakeupBufferSize + SIZE_4KB - 1) & ~(SIZE_4KB - 1);\r
+\r
+ //\r
+ // Get the HOB list for processing\r
+ //\r
+ Hob.Raw = GetHobList ();\r
+\r
+ //\r
+ // Collect memory ranges\r
+ //\r
+ while (!END_OF_HOB_LIST (Hob)) {\r
+ if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {\r
+ if ((Hob.ResourceDescriptor->PhysicalStart < BASE_1MB) &&\r
+ (Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) &&\r
+ ((Hob.ResourceDescriptor->ResourceAttribute &\r
+ (EFI_RESOURCE_ATTRIBUTE_READ_PROTECTED |\r
+ EFI_RESOURCE_ATTRIBUTE_WRITE_PROTECTED |\r
+ EFI_RESOURCE_ATTRIBUTE_EXECUTION_PROTECTED\r
+ )) == 0)\r
+ )\r
+ {\r
+ //\r
+ // Need memory under 1MB to be collected here\r
+ //\r
+ WakeupBufferEnd = Hob.ResourceDescriptor->PhysicalStart + Hob.ResourceDescriptor->ResourceLength;\r
+ if (ConfidentialComputingGuestHas (CCAttrAmdSevEs) &&\r
+ (WakeupBufferEnd > mSevEsPeiWakeupBuffer))\r
+ {\r
+ //\r
+ // SEV-ES Wakeup buffer should be under 1MB and under any previous one\r
+ //\r
+ WakeupBufferEnd = mSevEsPeiWakeupBuffer;\r
+ } else if (WakeupBufferEnd > BASE_1MB) {\r
+ //\r
+ // Wakeup buffer should be under 1MB\r
+ //\r
+ WakeupBufferEnd = BASE_1MB;\r
+ }\r
+\r
+ while (WakeupBufferEnd > WakeupBufferSize) {\r
+ //\r
+ // Wakeup buffer should be aligned on 4KB\r
+ //\r
+ WakeupBufferStart = (WakeupBufferEnd - WakeupBufferSize) & ~(SIZE_4KB - 1);\r
+ if (WakeupBufferStart < Hob.ResourceDescriptor->PhysicalStart) {\r
+ break;\r
+ }\r
+\r
+ if (CheckOverlapWithAllocatedBuffer (WakeupBufferStart, WakeupBufferEnd)) {\r
+ //\r
+ // If this range is overlapped with existing allocated buffer, skip it\r
+ // and find the next range\r
+ //\r
+ WakeupBufferEnd -= WakeupBufferSize;\r
+ continue;\r
+ }\r
+\r
+ DEBUG ((\r
+ DEBUG_INFO,\r
+ "WakeupBufferStart = %x, WakeupBufferSize = %x\n",\r
+ WakeupBufferStart,\r
+ WakeupBufferSize\r
+ ));\r
+\r
+ if (ConfidentialComputingGuestHas (CCAttrAmdSevEs)) {\r
+ //\r
+ // Next SEV-ES wakeup buffer allocation must be below this\r
+ // allocation\r
+ //\r
+ mSevEsPeiWakeupBuffer = WakeupBufferStart;\r
+ }\r
+\r
+ return (UINTN)WakeupBufferStart;\r
+ }\r
+ }\r
+ }\r
+\r
+ //\r
+ // Find the next HOB\r
+ //\r
+ Hob.Raw = GET_NEXT_HOB (Hob);\r
+ }\r
+\r
+ return (UINTN)-1;\r
+}\r
+\r
+/**\r
+ Get available EfiBootServicesCode memory below 4GB by specified size.\r
+\r
+ This buffer is required to safely transfer AP from real address mode to\r
+ protected mode or long mode, due to the fact that the buffer returned by\r
+ GetWakeupBuffer() may be marked as non-executable.\r
+\r
+ @param[in] BufferSize Wakeup transition buffer size.\r
+\r
+ @retval other Return wakeup transition buffer address below 4GB.\r
+ @retval 0 Cannot find free memory below 4GB.\r
+**/\r
+UINTN\r
+AllocateCodeBuffer (\r
+ IN UINTN BufferSize\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_PHYSICAL_ADDRESS Address;\r
+\r
+ Status = PeiServicesAllocatePages (EfiBootServicesCode, EFI_SIZE_TO_PAGES (BufferSize), &Address);\r
+ if (EFI_ERROR (Status)) {\r
+ Address = 0;\r
+ }\r
+\r
+ return (UINTN)Address;\r
+}\r
\r
/**\r
+ Return the address of the SEV-ES AP jump table.\r
+\r
+ This buffer is required in order for an SEV-ES guest to transition from\r
+ UEFI into an OS.\r
+\r
+ @return Return SEV-ES AP jump table buffer\r
+**/\r
+UINTN\r
+GetSevEsAPMemory (\r
+ VOID\r
+ )\r
+{\r
+ //\r
+ // PEI phase doesn't need to do such transition. So simply return 0.\r
+ //\r
+ return 0;\r
+}\r
+\r
/**\r
- Notify function on End Of PEI PPI.\r
+ Checks APs status and updates APs status if needed.\r
+\r
+**/\r
+VOID\r
+CheckAndUpdateApsStatus (\r
+ VOID\r
+ )\r
+{\r
+}\r
\r
- On S3 boot, this function will restore wakeup buffer data.\r
- On normal boot, this function will flag wakeup buffer to be un-used type.\r
+/**\r
+ Build the microcode patch HOB that contains the base address and size of the\r
+ microcode patch stored in the memory.\r
\r
- @param[in] PeiServices The pointer to the PEI Services Table.\r
- @param[in] NotifyDescriptor Address of the notification descriptor data structure.\r
- @param[in] Ppi Address of the PPI that was installed.\r
+ @param[in] CpuMpData Pointer to the CPU_MP_DATA structure.\r
\r
- @retval EFI_SUCCESS When everything is OK.\r
**/\r
-EFI_STATUS\r
-EFIAPI\r
-CpuMpEndOfPeiCallback (\r
- IN EFI_PEI_SERVICES **PeiServices,\r
- IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,\r
- IN VOID *Ppi\r
+VOID\r
+BuildMicrocodeCacheHob (\r
+ IN CPU_MP_DATA *CpuMpData\r
)\r
{\r
+ EDKII_MICROCODE_PATCH_HOB *MicrocodeHob;\r
+ UINTN HobDataLength;\r
+ UINT32 Index;\r
\r
- DEBUG ((DEBUG_INFO, "PeiMpInitLib: CpuMpEndOfPeiCallback () invoked\n"));\r
+ HobDataLength = sizeof (EDKII_MICROCODE_PATCH_HOB) +\r
+ sizeof (UINT64) * CpuMpData->CpuCount;\r
\r
- return EFI_SUCCESS;\r
+ MicrocodeHob = AllocatePool (HobDataLength);\r
+ if (MicrocodeHob == NULL) {\r
+ ASSERT (FALSE);\r
+ return;\r
+ }\r
+\r
+ //\r
+ // Store the information of the memory region that holds the microcode patches.\r
+ //\r
+ MicrocodeHob->MicrocodePatchAddress = CpuMpData->MicrocodePatchAddress;\r
+ MicrocodeHob->MicrocodePatchRegionSize = CpuMpData->MicrocodePatchRegionSize;\r
+\r
+ //\r
+ // Store the detected microcode patch for each processor as well.\r
+ //\r
+ MicrocodeHob->ProcessorCount = CpuMpData->CpuCount;\r
+ for (Index = 0; Index < CpuMpData->CpuCount; Index++) {\r
+ if (CpuMpData->CpuData[Index].MicrocodeEntryAddr != 0) {\r
+ MicrocodeHob->ProcessorSpecificPatchOffset[Index] =\r
+ CpuMpData->CpuData[Index].MicrocodeEntryAddr - CpuMpData->MicrocodePatchAddress;\r
+ } else {\r
+ MicrocodeHob->ProcessorSpecificPatchOffset[Index] = MAX_UINT64;\r
+ }\r
+ }\r
+\r
+ BuildGuidDataHob (\r
+ &gEdkiiMicrocodePatchHobGuid,\r
+ MicrocodeHob,\r
+ HobDataLength\r
+ );\r
+\r
+ return;\r
}\r
+\r
/**\r
Initialize global data for MP support.\r
\r
**/\r
VOID\r
InitMpGlobalData (\r
- IN CPU_MP_DATA *CpuMpData\r
+ IN CPU_MP_DATA *CpuMpData\r
)\r
{\r
- EFI_STATUS Status;\r
+ EFI_STATUS Status;\r
\r
+ BuildMicrocodeCacheHob (CpuMpData);\r
SaveCpuMpData (CpuMpData);\r
- //\r
- // Register an event for EndOfPei\r
- //\r
- Status = PeiServicesNotifyPpi (&mMpInitLibNotifyList);\r
+\r
+ ///\r
+ /// Install Notify\r
+ ///\r
+ Status = PeiServicesNotifyPpi (&mS3SmmInitDoneNotifyDesc);\r
ASSERT_EFI_ERROR (Status);\r
}\r
\r
EFI_EVENT is defined in CreateEvent() in\r
the Unified Extensible Firmware Interface\r
Specification.\r
- @param[in] TimeoutInMicrosecsond Indicates the time limit in microseconds for\r
+ @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r
APs to return from Procedure, either for\r
blocking or non-blocking mode. Zero means\r
infinity. If the timeout expires before\r
EFI_STATUS\r
EFIAPI\r
MpInitLibStartupAllAPs (\r
- IN EFI_AP_PROCEDURE Procedure,\r
- IN BOOLEAN SingleThread,\r
- IN EFI_EVENT WaitEvent OPTIONAL,\r
- IN UINTN TimeoutInMicroseconds,\r
- IN VOID *ProcedureArgument OPTIONAL,\r
- OUT UINTN **FailedCpuList OPTIONAL\r
+ IN EFI_AP_PROCEDURE Procedure,\r
+ IN BOOLEAN SingleThread,\r
+ IN EFI_EVENT WaitEvent OPTIONAL,\r
+ IN UINTN TimeoutInMicroseconds,\r
+ IN VOID *ProcedureArgument OPTIONAL,\r
+ OUT UINTN **FailedCpuList OPTIONAL\r
)\r
{\r
- return EFI_UNSUPPORTED;\r
+ if (WaitEvent != NULL) {\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ return StartupAllCPUsWorker (\r
+ Procedure,\r
+ SingleThread,\r
+ TRUE,\r
+ NULL,\r
+ TimeoutInMicroseconds,\r
+ ProcedureArgument,\r
+ FailedCpuList\r
+ );\r
}\r
\r
/**\r
EFI_EVENT is defined in CreateEvent() in\r
the Unified Extensible Firmware Interface\r
Specification.\r
- @param[in] TimeoutInMicrosecsond Indicates the time limit in microseconds for\r
+ @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r
this AP to finish this Procedure, either for\r
blocking or non-blocking mode. Zero means\r
infinity. If the timeout expires before\r
EFI_STATUS\r
EFIAPI\r
MpInitLibStartupThisAP (\r
- IN EFI_AP_PROCEDURE Procedure,\r
- IN UINTN ProcessorNumber,\r
- IN EFI_EVENT WaitEvent OPTIONAL,\r
- IN UINTN TimeoutInMicroseconds,\r
- IN VOID *ProcedureArgument OPTIONAL,\r
- OUT BOOLEAN *Finished OPTIONAL\r
+ IN EFI_AP_PROCEDURE Procedure,\r
+ IN UINTN ProcessorNumber,\r
+ IN EFI_EVENT WaitEvent OPTIONAL,\r
+ IN UINTN TimeoutInMicroseconds,\r
+ IN VOID *ProcedureArgument OPTIONAL,\r
+ OUT BOOLEAN *Finished OPTIONAL\r
)\r
{\r
- return EFI_UNSUPPORTED;\r
+ if (WaitEvent != NULL) {\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ return StartupThisAPWorker (\r
+ Procedure,\r
+ ProcessorNumber,\r
+ NULL,\r
+ TimeoutInMicroseconds,\r
+ ProcedureArgument,\r
+ Finished\r
+ );\r
}\r
\r
/**\r
EFI_STATUS\r
EFIAPI\r
MpInitLibSwitchBSP (\r
- IN UINTN ProcessorNumber,\r
- IN BOOLEAN EnableOldBSP\r
+ IN UINTN ProcessorNumber,\r
+ IN BOOLEAN EnableOldBSP\r
)\r
{\r
- return EFI_UNSUPPORTED;\r
+ return SwitchBSPWorker (ProcessorNumber, EnableOldBSP);\r
}\r
\r
/**\r
EFI_STATUS\r
EFIAPI\r
MpInitLibEnableDisableAP (\r
- IN UINTN ProcessorNumber,\r
- IN BOOLEAN EnableAP,\r
- IN UINT32 *HealthFlag OPTIONAL\r
+ IN UINTN ProcessorNumber,\r
+ IN BOOLEAN EnableAP,\r
+ IN UINT32 *HealthFlag OPTIONAL\r
)\r
{\r
- return EFI_UNSUPPORTED;\r
+ return EnableDisableApWorker (ProcessorNumber, EnableAP, HealthFlag);\r
}\r
\r
+/**\r
+ This funtion will try to invoke platform specific microcode shadow logic to\r
+ relocate microcode update patches into memory.\r
+\r
+ @param[in, out] CpuMpData The pointer to CPU MP Data structure.\r
\r
+ @retval EFI_SUCCESS Shadow microcode success.\r
+ @retval EFI_OUT_OF_RESOURCES No enough resource to complete the operation.\r
+ @retval EFI_UNSUPPORTED Can't find platform specific microcode shadow\r
+ PPI/Protocol.\r
+**/\r
+EFI_STATUS\r
+PlatformShadowMicrocode (\r
+ IN OUT CPU_MP_DATA *CpuMpData\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EDKII_PEI_SHADOW_MICROCODE_PPI *ShadowMicrocodePpi;\r
+ UINTN CpuCount;\r
+ EDKII_PEI_MICROCODE_CPU_ID *MicrocodeCpuId;\r
+ UINTN Index;\r
+ UINTN BufferSize;\r
+ VOID *Buffer;\r
+\r
+ Status = PeiServicesLocatePpi (\r
+ &gEdkiiPeiShadowMicrocodePpiGuid,\r
+ 0,\r
+ NULL,\r
+ (VOID **)&ShadowMicrocodePpi\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ CpuCount = CpuMpData->CpuCount;\r
+ MicrocodeCpuId = (EDKII_PEI_MICROCODE_CPU_ID *)AllocateZeroPool (sizeof (EDKII_PEI_MICROCODE_CPU_ID) * CpuCount);\r
+ if (MicrocodeCpuId == NULL) {\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+\r
+ for (Index = 0; Index < CpuMpData->CpuCount; Index++) {\r
+ MicrocodeCpuId[Index].ProcessorSignature = CpuMpData->CpuData[Index].ProcessorSignature;\r
+ MicrocodeCpuId[Index].PlatformId = CpuMpData->CpuData[Index].PlatformId;\r
+ }\r
+\r
+ Status = ShadowMicrocodePpi->ShadowMicrocode (\r
+ ShadowMicrocodePpi,\r
+ CpuCount,\r
+ MicrocodeCpuId,\r
+ &BufferSize,\r
+ &Buffer\r
+ );\r
+ FreePool (MicrocodeCpuId);\r
+ if (EFI_ERROR (Status)) {\r
+ return EFI_NOT_FOUND;\r
+ }\r
+\r
+ CpuMpData->MicrocodePatchAddress = (UINTN)Buffer;\r
+ CpuMpData->MicrocodePatchRegionSize = BufferSize;\r
+\r
+ DEBUG ((\r
+ DEBUG_INFO,\r
+ "%a: Required microcode patches have been loaded at 0x%lx, with size 0x%lx.\n",\r
+ __FUNCTION__,\r
+ CpuMpData->MicrocodePatchAddress,\r
+ CpuMpData->MicrocodePatchRegionSize\r
+ ));\r
+\r
+ return EFI_SUCCESS;\r
+}\r
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