b95908e043
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3275 Previous commit introduced a generic confidential computing PCD that can determine whether AMD SEV-ES is enabled. Update the MpInitLib to drop the PcdSevEsIsEnabled in favor of PcdConfidentialComputingAttr. Cc: Michael Roth <michael.roth@amd.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Rahul Kumar <rahul1.kumar@intel.com> Cc: Eric Dong <eric.dong@intel.com> Cc: James Bottomley <jejb@linux.ibm.com> Cc: Min Xu <min.m.xu@intel.com> Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Cc: Erdem Aktas <erdemaktas@google.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Ray Ni <ray.ni@intel.com> Suggested-by: Jiewen Yao <jiewen.yao@intel.com> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
761 lines
28 KiB
C
761 lines
28 KiB
C
/** @file
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MP initialize support functions for PEI phase.
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Copyright (c) 2016 - 2020, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "MpLib.h"
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#include <Library/PeiServicesLib.h>
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#include <Guid/S3SmmInitDone.h>
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#include <Ppi/ShadowMicrocode.h>
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STATIC UINT64 mSevEsPeiWakeupBuffer = BASE_1MB;
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/**
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S3 SMM Init Done notification function.
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@param PeiServices Indirect reference to the PEI Services Table.
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@param NotifyDesc Address of the notification descriptor data structure.
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@param InvokePpi Address of the PPI that was invoked.
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@retval EFI_SUCCESS The function completes successfully.
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**/
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EFI_STATUS
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EFIAPI
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NotifyOnS3SmmInitDonePpi (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDesc,
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IN VOID *InvokePpi
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);
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//
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// Global function
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//
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EFI_PEI_NOTIFY_DESCRIPTOR mS3SmmInitDoneNotifyDesc = {
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EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
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&gEdkiiS3SmmInitDoneGuid,
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NotifyOnS3SmmInitDonePpi
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};
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/**
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S3 SMM Init Done notification function.
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@param PeiServices Indirect reference to the PEI Services Table.
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@param NotifyDesc Address of the notification descriptor data structure.
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@param InvokePpi Address of the PPI that was invoked.
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@retval EFI_SUCCESS The function completes successfully.
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**/
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EFI_STATUS
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EFIAPI
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NotifyOnS3SmmInitDonePpi (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDesc,
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IN VOID *InvokePpi
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)
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{
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CPU_MP_DATA *CpuMpData;
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CpuMpData = GetCpuMpData ();
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//
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// PiSmmCpuDxeSmm driver hardcode change the loop mode to HLT mode.
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// So in this notify function, code need to check the current loop
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// mode, if it is not HLT mode, code need to change loop mode back
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// to the original mode.
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//
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if (CpuMpData->ApLoopMode != ApInHltLoop) {
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CpuMpData->WakeUpByInitSipiSipi = TRUE;
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}
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return EFI_SUCCESS;
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}
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/**
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Enable Debug Agent to support source debugging on AP function.
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**/
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VOID
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EnableDebugAgent (
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VOID
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)
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{
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}
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/**
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Get pointer to CPU MP Data structure.
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For BSP, the pointer is retrieved from HOB.
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For AP, the structure is just after IDT.
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@return The pointer to CPU MP Data structure.
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**/
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CPU_MP_DATA *
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GetCpuMpData (
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VOID
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)
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{
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CPU_MP_DATA *CpuMpData;
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MSR_IA32_APIC_BASE_REGISTER ApicBaseMsr;
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IA32_DESCRIPTOR Idtr;
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ApicBaseMsr.Uint64 = AsmReadMsr64 (MSR_IA32_APIC_BASE);
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if (ApicBaseMsr.Bits.BSP == 1) {
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CpuMpData = GetCpuMpDataFromGuidedHob ();
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ASSERT (CpuMpData != NULL);
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} else {
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AsmReadIdtr (&Idtr);
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CpuMpData = (CPU_MP_DATA *)(Idtr.Base + Idtr.Limit + 1);
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}
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return CpuMpData;
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}
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/**
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Save the pointer to CPU MP Data structure.
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@param[in] CpuMpData The pointer to CPU MP Data structure will be saved.
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**/
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VOID
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SaveCpuMpData (
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IN CPU_MP_DATA *CpuMpData
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)
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{
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UINT64 Data64;
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//
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// Build location of CPU MP DATA buffer in HOB
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//
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Data64 = (UINT64)(UINTN)CpuMpData;
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BuildGuidDataHob (
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&mCpuInitMpLibHobGuid,
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(VOID *)&Data64,
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sizeof (UINT64)
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);
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}
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/**
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Check if AP wakeup buffer is overlapped with existing allocated buffer.
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@param[in] WakeupBufferStart AP wakeup buffer start address.
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@param[in] WakeupBufferEnd AP wakeup buffer end address.
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@retval TRUE There is overlap.
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@retval FALSE There is no overlap.
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**/
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BOOLEAN
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CheckOverlapWithAllocatedBuffer (
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IN UINT64 WakeupBufferStart,
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IN UINT64 WakeupBufferEnd
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)
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{
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EFI_PEI_HOB_POINTERS Hob;
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EFI_HOB_MEMORY_ALLOCATION *MemoryHob;
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BOOLEAN Overlapped;
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UINT64 MemoryStart;
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UINT64 MemoryEnd;
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Overlapped = FALSE;
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//
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// Get the HOB list for processing
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//
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Hob.Raw = GetHobList ();
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//
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// Collect memory ranges
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//
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while (!END_OF_HOB_LIST (Hob)) {
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if (Hob.Header->HobType == EFI_HOB_TYPE_MEMORY_ALLOCATION) {
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MemoryHob = Hob.MemoryAllocation;
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MemoryStart = MemoryHob->AllocDescriptor.MemoryBaseAddress;
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MemoryEnd = MemoryHob->AllocDescriptor.MemoryBaseAddress + MemoryHob->AllocDescriptor.MemoryLength;
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if (!((WakeupBufferStart >= MemoryEnd) || (WakeupBufferEnd <= MemoryStart))) {
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Overlapped = TRUE;
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break;
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}
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}
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Hob.Raw = GET_NEXT_HOB (Hob);
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}
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return Overlapped;
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}
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/**
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Get available system memory below 1MB by specified size.
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@param[in] WakeupBufferSize Wakeup buffer size required
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@retval other Return wakeup buffer address below 1MB.
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@retval -1 Cannot find free memory below 1MB.
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**/
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UINTN
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GetWakeupBuffer (
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IN UINTN WakeupBufferSize
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)
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{
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EFI_PEI_HOB_POINTERS Hob;
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UINT64 WakeupBufferStart;
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UINT64 WakeupBufferEnd;
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WakeupBufferSize = (WakeupBufferSize + SIZE_4KB - 1) & ~(SIZE_4KB - 1);
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//
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// Get the HOB list for processing
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//
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Hob.Raw = GetHobList ();
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//
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// Collect memory ranges
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//
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while (!END_OF_HOB_LIST (Hob)) {
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if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
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if ((Hob.ResourceDescriptor->PhysicalStart < BASE_1MB) &&
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(Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) &&
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((Hob.ResourceDescriptor->ResourceAttribute &
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(EFI_RESOURCE_ATTRIBUTE_READ_PROTECTED |
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EFI_RESOURCE_ATTRIBUTE_WRITE_PROTECTED |
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EFI_RESOURCE_ATTRIBUTE_EXECUTION_PROTECTED
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)) == 0)
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)
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{
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//
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// Need memory under 1MB to be collected here
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//
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WakeupBufferEnd = Hob.ResourceDescriptor->PhysicalStart + Hob.ResourceDescriptor->ResourceLength;
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if (ConfidentialComputingGuestHas (CCAttrAmdSevEs) &&
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(WakeupBufferEnd > mSevEsPeiWakeupBuffer))
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{
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//
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// SEV-ES Wakeup buffer should be under 1MB and under any previous one
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//
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WakeupBufferEnd = mSevEsPeiWakeupBuffer;
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} else if (WakeupBufferEnd > BASE_1MB) {
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//
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// Wakeup buffer should be under 1MB
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//
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WakeupBufferEnd = BASE_1MB;
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}
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while (WakeupBufferEnd > WakeupBufferSize) {
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//
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// Wakeup buffer should be aligned on 4KB
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//
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WakeupBufferStart = (WakeupBufferEnd - WakeupBufferSize) & ~(SIZE_4KB - 1);
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if (WakeupBufferStart < Hob.ResourceDescriptor->PhysicalStart) {
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break;
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}
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if (CheckOverlapWithAllocatedBuffer (WakeupBufferStart, WakeupBufferEnd)) {
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//
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// If this range is overlapped with existing allocated buffer, skip it
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// and find the next range
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//
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WakeupBufferEnd -= WakeupBufferSize;
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continue;
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}
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DEBUG ((
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DEBUG_INFO,
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"WakeupBufferStart = %x, WakeupBufferSize = %x\n",
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WakeupBufferStart,
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WakeupBufferSize
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));
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if (ConfidentialComputingGuestHas (CCAttrAmdSevEs)) {
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//
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// Next SEV-ES wakeup buffer allocation must be below this
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// allocation
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//
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mSevEsPeiWakeupBuffer = WakeupBufferStart;
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}
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return (UINTN)WakeupBufferStart;
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}
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}
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}
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//
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// Find the next HOB
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//
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Hob.Raw = GET_NEXT_HOB (Hob);
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}
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return (UINTN)-1;
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}
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/**
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Get available EfiBootServicesCode memory below 4GB by specified size.
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This buffer is required to safely transfer AP from real address mode to
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protected mode or long mode, due to the fact that the buffer returned by
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GetWakeupBuffer() may be marked as non-executable.
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@param[in] BufferSize Wakeup transition buffer size.
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@retval other Return wakeup transition buffer address below 4GB.
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@retval 0 Cannot find free memory below 4GB.
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**/
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UINTN
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GetModeTransitionBuffer (
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IN UINTN BufferSize
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)
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{
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//
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// PEI phase doesn't need to do such transition. So simply return 0.
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//
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return 0;
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}
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/**
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Return the address of the SEV-ES AP jump table.
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This buffer is required in order for an SEV-ES guest to transition from
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UEFI into an OS.
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@return Return SEV-ES AP jump table buffer
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**/
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UINTN
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GetSevEsAPMemory (
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VOID
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)
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{
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//
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// PEI phase doesn't need to do such transition. So simply return 0.
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//
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return 0;
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}
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/**
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Checks APs status and updates APs status if needed.
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**/
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VOID
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CheckAndUpdateApsStatus (
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VOID
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)
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{
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}
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/**
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Build the microcode patch HOB that contains the base address and size of the
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microcode patch stored in the memory.
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@param[in] CpuMpData Pointer to the CPU_MP_DATA structure.
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**/
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VOID
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BuildMicrocodeCacheHob (
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IN CPU_MP_DATA *CpuMpData
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)
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{
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EDKII_MICROCODE_PATCH_HOB *MicrocodeHob;
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UINTN HobDataLength;
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UINT32 Index;
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HobDataLength = sizeof (EDKII_MICROCODE_PATCH_HOB) +
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sizeof (UINT64) * CpuMpData->CpuCount;
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MicrocodeHob = AllocatePool (HobDataLength);
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if (MicrocodeHob == NULL) {
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ASSERT (FALSE);
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return;
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}
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//
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// Store the information of the memory region that holds the microcode patches.
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//
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MicrocodeHob->MicrocodePatchAddress = CpuMpData->MicrocodePatchAddress;
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MicrocodeHob->MicrocodePatchRegionSize = CpuMpData->MicrocodePatchRegionSize;
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//
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// Store the detected microcode patch for each processor as well.
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//
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MicrocodeHob->ProcessorCount = CpuMpData->CpuCount;
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for (Index = 0; Index < CpuMpData->CpuCount; Index++) {
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if (CpuMpData->CpuData[Index].MicrocodeEntryAddr != 0) {
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MicrocodeHob->ProcessorSpecificPatchOffset[Index] =
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CpuMpData->CpuData[Index].MicrocodeEntryAddr - CpuMpData->MicrocodePatchAddress;
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} else {
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MicrocodeHob->ProcessorSpecificPatchOffset[Index] = MAX_UINT64;
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}
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}
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BuildGuidDataHob (
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&gEdkiiMicrocodePatchHobGuid,
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MicrocodeHob,
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HobDataLength
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);
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return;
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}
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/**
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Initialize global data for MP support.
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@param[in] CpuMpData The pointer to CPU MP Data structure.
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**/
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VOID
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InitMpGlobalData (
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IN CPU_MP_DATA *CpuMpData
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)
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{
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EFI_STATUS Status;
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BuildMicrocodeCacheHob (CpuMpData);
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SaveCpuMpData (CpuMpData);
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///
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/// Install Notify
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///
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Status = PeiServicesNotifyPpi (&mS3SmmInitDoneNotifyDesc);
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ASSERT_EFI_ERROR (Status);
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}
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/**
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This service executes a caller provided function on all enabled APs.
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@param[in] Procedure A pointer to the function to be run on
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enabled APs of the system. See type
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EFI_AP_PROCEDURE.
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@param[in] SingleThread If TRUE, then all the enabled APs execute
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the function specified by Procedure one by
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one, in ascending order of processor handle
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number. If FALSE, then all the enabled APs
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execute the function specified by Procedure
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simultaneously.
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@param[in] WaitEvent The event created by the caller with CreateEvent()
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service. If it is NULL, then execute in
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blocking mode. BSP waits until all APs finish
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or TimeoutInMicroSeconds expires. If it's
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not NULL, then execute in non-blocking mode.
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BSP requests the function specified by
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Procedure to be started on all the enabled
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APs, and go on executing immediately. If
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all return from Procedure, or TimeoutInMicroSeconds
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expires, this event is signaled. The BSP
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can use the CheckEvent() or WaitForEvent()
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services to check the state of event. Type
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EFI_EVENT is defined in CreateEvent() in
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the Unified Extensible Firmware Interface
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Specification.
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@param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for
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APs to return from Procedure, either for
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blocking or non-blocking mode. Zero means
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infinity. If the timeout expires before
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all APs return from Procedure, then Procedure
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on the failed APs is terminated. All enabled
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APs are available for next function assigned
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by MpInitLibStartupAllAPs() or
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MPInitLibStartupThisAP().
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If the timeout expires in blocking mode,
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BSP returns EFI_TIMEOUT. If the timeout
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expires in non-blocking mode, WaitEvent
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is signaled with SignalEvent().
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@param[in] ProcedureArgument The parameter passed into Procedure for
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all APs.
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@param[out] FailedCpuList If NULL, this parameter is ignored. Otherwise,
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if all APs finish successfully, then its
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content is set to NULL. If not all APs
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finish before timeout expires, then its
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content is set to address of the buffer
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holding handle numbers of the failed APs.
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The buffer is allocated by MP Initialization
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library, and it's the caller's responsibility to
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free the buffer with FreePool() service.
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In blocking mode, it is ready for consumption
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when the call returns. In non-blocking mode,
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it is ready when WaitEvent is signaled. The
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list of failed CPU is terminated by
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END_OF_CPU_LIST.
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@retval EFI_SUCCESS In blocking mode, all APs have finished before
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the timeout expired.
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@retval EFI_SUCCESS In non-blocking mode, function has been dispatched
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to all enabled APs.
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@retval EFI_UNSUPPORTED A non-blocking mode request was made after the
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UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was
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signaled.
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@retval EFI_UNSUPPORTED WaitEvent is not NULL if non-blocking mode is not
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supported.
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@retval EFI_DEVICE_ERROR Caller processor is AP.
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@retval EFI_NOT_STARTED No enabled APs exist in the system.
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@retval EFI_NOT_READY Any enabled APs are busy.
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@retval EFI_NOT_READY MP Initialize Library is not initialized.
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@retval EFI_TIMEOUT In blocking mode, the timeout expired before
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all enabled APs have finished.
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@retval EFI_INVALID_PARAMETER Procedure is NULL.
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**/
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EFI_STATUS
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EFIAPI
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MpInitLibStartupAllAPs (
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IN EFI_AP_PROCEDURE Procedure,
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IN BOOLEAN SingleThread,
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IN EFI_EVENT WaitEvent OPTIONAL,
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IN UINTN TimeoutInMicroseconds,
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IN VOID *ProcedureArgument OPTIONAL,
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OUT UINTN **FailedCpuList OPTIONAL
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)
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{
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if (WaitEvent != NULL) {
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return EFI_UNSUPPORTED;
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}
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return StartupAllCPUsWorker (
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Procedure,
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SingleThread,
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TRUE,
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NULL,
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TimeoutInMicroseconds,
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ProcedureArgument,
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FailedCpuList
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);
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}
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/**
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This service lets the caller get one enabled AP to execute a caller-provided
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function.
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@param[in] Procedure A pointer to the function to be run on the
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designated AP of the system. See type
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EFI_AP_PROCEDURE.
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@param[in] ProcessorNumber The handle number of the AP. The range is
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from 0 to the total number of logical
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processors minus 1. The total number of
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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;
|
|
}
|