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UefiCpuPkg: Build MpInfo2HOB in CpuMpPei

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Build MpInfo2HOB in CpuMpPei module so that later
PiSmmCpuDxe or other StandaloneMm module can consume
the HOB.
Since there might be more one gMpInformationHobGuid2
in HOB list, CpuMpPei create a gMpInformationHobGuid2
with 0 value NumberOfProcessors field in the end of the
process to indicate it's the last MP_INFORMATION2_HOB.

Signed-off-by: Dun Tan <dun.tan@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Dun Tan
2023-11-24 15:53:33 +08:00
committed by mergify[bot]
parent c02eed8e5a
commit e10f1f5a04
3 changed files with 96 additions and 2 deletions
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91
UefiCpuPkg/CpuMpPei/CpuMpPei.c
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@@ -541,6 +541,92 @@ InitializeMpExceptionStackSwitchHandlers (
FreePages (SwitchStackData, EFI_SIZE_TO_PAGES (NumberOfProcessors * sizeof (EXCEPTION_STACK_SWITCH_CONTEXT)));
}
/**
Create gMpInformationHobGuid2.
**/
VOID
BuildMpInformationHob (
VOID
)
{
EFI_STATUS Status;
UINTN ProcessorIndex;
UINTN NumberOfProcessors;
UINTN NumberOfEnabledProcessors;
UINTN NumberOfProcessorsInHob;
UINTN MaxProcessorsPerHob;
MP_INFORMATION2_HOB_DATA *MpInformation2HobData;
MP_INFORMATION2_ENTRY *MpInformation2Entry;
UINTN Index;
ProcessorIndex = 0;
MpInformation2HobData = NULL;
MpInformation2Entry = NULL;
Status = MpInitLibGetNumberOfProcessors (&NumberOfProcessors, &NumberOfEnabledProcessors);
ASSERT_EFI_ERROR (Status);
MaxProcessorsPerHob = ((MAX_UINT16 & ~7) - sizeof (EFI_HOB_GUID_TYPE) - sizeof (MP_INFORMATION2_HOB_DATA)) / sizeof (MP_INFORMATION2_ENTRY);
NumberOfProcessorsInHob = MaxProcessorsPerHob;
//
// Create MP_INFORMATION2_HOB. when the max HobLength 0xFFF8 is not enough, there
// will be a MP_INFORMATION2_HOB series in the HOB list.
// In the HOB list, there is a gMpInformationHobGuid2 with 0 value NumberOfProcessors
// fields to indicate it's the last MP_INFORMATION2_HOB.
//
while (NumberOfProcessorsInHob != 0) {
NumberOfProcessorsInHob = MIN (NumberOfProcessors - ProcessorIndex, MaxProcessorsPerHob);
MpInformation2HobData = BuildGuidHob (
&gMpInformationHobGuid2,
sizeof (MP_INFORMATION2_HOB_DATA) + sizeof (MP_INFORMATION2_ENTRY) * NumberOfProcessorsInHob
);
ASSERT (MpInformation2HobData != NULL);
MpInformation2HobData->Version = MP_INFORMATION2_HOB_REVISION;
MpInformation2HobData->ProcessorIndex = ProcessorIndex;
MpInformation2HobData->NumberOfProcessors = (UINT16)NumberOfProcessorsInHob;
MpInformation2HobData->EntrySize = sizeof (MP_INFORMATION2_ENTRY);
DEBUG ((DEBUG_INFO, "Creating MpInformation2 HOB...\n"));
for (Index = 0; Index < NumberOfProcessorsInHob; Index++) {
MpInformation2Entry = &MpInformation2HobData->Entry[Index];
Status = MpInitLibGetProcessorInfo (
(Index + ProcessorIndex) | CPU_V2_EXTENDED_TOPOLOGY,
&MpInformation2Entry->ProcessorInfo,
NULL
);
ASSERT_EFI_ERROR (Status);
DEBUG ((
DEBUG_INFO,
" Processor[%04d]: ProcessorId = 0x%lx, StatusFlag = 0x%x\n",
Index + ProcessorIndex,
MpInformation2Entry->ProcessorInfo.ProcessorId,
MpInformation2Entry->ProcessorInfo.StatusFlag
));
DEBUG ((
DEBUG_INFO,
" Location = Package:%d Core:%d Thread:%d\n",
MpInformation2Entry->ProcessorInfo.Location.Package,
MpInformation2Entry->ProcessorInfo.Location.Core,
MpInformation2Entry->ProcessorInfo.Location.Thread
));
DEBUG ((
DEBUG_INFO,
" Location2 = Package:%d Die:%d Tile:%d Module:%d Core:%d Thread:%d\n",
MpInformation2Entry->ProcessorInfo.ExtendedInformation.Location2.Package,
MpInformation2Entry->ProcessorInfo.ExtendedInformation.Location2.Die,
MpInformation2Entry->ProcessorInfo.ExtendedInformation.Location2.Tile,
MpInformation2Entry->ProcessorInfo.ExtendedInformation.Location2.Module,
MpInformation2Entry->ProcessorInfo.ExtendedInformation.Location2.Core,
MpInformation2Entry->ProcessorInfo.ExtendedInformation.Location2.Thread
));
}
ProcessorIndex += NumberOfProcessorsInHob;
}
}
/**
Initializes MP and exceptions handlers.
@@ -602,6 +688,11 @@ InitializeCpuMpWorker (
Status = PeiServicesInstallPpi (mPeiCpuMpPpiList);
ASSERT_EFI_ERROR (Status);
//
// Create gMpInformationHobGuid2
//
BuildMpInformationHob ();
return Status;
}