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UefiCpuPkg/MpInitLib: Produce EDKII microcode patch HOB

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REF:https://bugzilla.tianocore.org/show_bug.cgi?id=2430

This commit will update the MpInitLib to:

A. Collect the base address and size information after microcode patches
   being loaded into memory;
B. Collect the detected microcode patch for each processor within system;
C. Based on the collected information, produce the EDKII microcode patch
   HOB.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Siyuan Fu <siyuan.fu@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Signed-off-by: Hao A Wu <hao.a.wu@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
This commit is contained in:
Hao A Wu
2019-12-23 14:32:49 +08:00
committed by mergify[bot]
parent 253909974a
commit e1ed55738e
5 changed files with 100 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

55
UefiCpuPkg/Library/MpInitLib/PeiMpLib.c
View File

@@ -9,6 +9,7 @@
#include "MpLib.h"
#include <Library/PeiServicesLib.h>
#include <Guid/S3SmmInitDone.h>
#include <Guid/MicrocodePatchHob.h>
/**
S3 SMM Init Done notification function.
@@ -290,6 +291,59 @@ CheckAndUpdateApsStatus (
{
}
/**
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.
@@ -302,6 +356,7 @@ InitMpGlobalData (
{
EFI_STATUS Status;
BuildMicrocodeCacheHob (CpuMpData);
SaveCpuMpData (CpuMpData);
///