I see the CoreType is an 8-bit field, but this gets filtered down to IsBigCore
BOOLEAN.
If there may be different core type values, would it be more flexible to collect
the 8-bit core type value from each CPU and have a configurable policy on how to
sort the CPUs in the MADT based on the core type values?
Mike
> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of JackX Lin
> Sent: Tuesday, November 15, 2022 6:53 PM
> To: devel@edk2.groups.io
> Cc: Lin, JackX <jackx....@intel.com>; Lin, JackX <jackx....@intel.com>; Chiu,
> Chasel <chasel.c...@intel.com>; Desimone,
> Nathaniel L <nathaniel.l.desim...@intel.com>; Oram, Isaac W
> <isaac.w.o...@intel.com>; Gao, Liming <gaolim...@byosoft.com.cn>;
> Dong, Eric <eric.d...@intel.com>; Kuo, Donald <donald....@intel.com>; Kumar,
> Chandana C <chandana.c.ku...@intel.com>
> Subject: [edk2-devel] [edk2-platforms: PATCH] BIOS needs to present cores in
> order of relative performance in MADT
>
> BIOS should keep MADT ordering by big core first then small core
>
> Signed-off-by: JackX Lin <jackx....@intel.com>
> Cc: Chasel Chiu <chasel.c...@intel.com>
> Cc: Nate DeSimone <nathaniel.l.desim...@intel.com>
> Cc: Isaac Oram <isaac.w.o...@intel.com>
> Cc: Liming Gao <gaolim...@byosoft.com.cn>
> Cc: Eric Dong <eric.d...@intel.com>
> Cc: Donald Kuo <donald....@intel.com>
> Cc: Chandana C Kumar <chandana.c.ku...@intel.com>
> Cc: JackX Lin <jackx....@intel.com>
> ---
> Platform/Intel/MinPlatformPkg/Acpi/AcpiTables/AcpiPlatform.c | 149
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> ++++++++++++++-------
> 1 file changed, 142 insertions(+), 7 deletions(-)
>
> diff --git a/Platform/Intel/MinPlatformPkg/Acpi/AcpiTables/AcpiPlatform.c
> b/Platform/Intel/MinPlatformPkg/Acpi/AcpiTables/AcpiPlatform.c
> index 6e57b638e0..02c1dd3a91 100644
> --- a/Platform/Intel/MinPlatformPkg/Acpi/AcpiTables/AcpiPlatform.c
> +++ b/Platform/Intel/MinPlatformPkg/Acpi/AcpiTables/AcpiPlatform.c
> @@ -18,6 +18,7 @@ typedef struct {
> UINT32 Flags;
> UINT32 SocketNum;
> UINT32 Thread;
> + BOOLEAN IsBigCore;
> } EFI_CPU_ID_ORDER_MAP;
>
> //
> @@ -131,6 +132,104 @@ AppendCpuMapTableEntry (
>
> }
>
> +/**
> + Detect if Hetero Core is supported.
> +
> + @retval TRUE - Processor support HeteroCore
> + @retval FALSE - Processor doesnt support HeteroCore
> +**/
> +BOOLEAN
> +EFIAPI
> +IsHeteroCoreSupported (
> + VOID
> + )
> +{
> + CPUID_STRUCTURED_EXTENDED_FEATURE_FLAGS_EDX Edx;
> +
> + ///
> + /// Check Hetero feature is supported
> + /// with CPUID.(EAX=7,ECX=0):EDX[15]=1
> + ///
> + AsmCpuidEx (CPUID_STRUCTURED_EXTENDED_FEATURE_FLAGS, 0, NULL, NULL, NULL,
> &Edx.Uint32);
> + if (Edx.Bits.Hybrid == 1) {
> + return TRUE;
> + }
> + return FALSE;
> +}
> +
> +/**
> + Detect the type of core, whether it is Big/Small Core.
> +
> + @param[out] CoreType Output pointer that get
> CPUID_NATIVE_MODEL_ID_INFO data
> + 10h - Quark
> + 20h - Atom
> + 30H - Knights
> + 40H - Core
> +**/
> +VOID
> +EFIAPI
> +GetCoreType (
> + OUT UINT8 *CoreType
> + )
> +{
> + UINT32 Eax;
> +
> + if (IsHeteroCoreSupported ()) {
> + //
> + // Check which is the running core by reading CPUID.(EAX=1AH,
> ECX=00H):EAX
> + //
> + AsmCpuid (CPUID_HYBRID_INFORMATION, &Eax, NULL, NULL, NULL);
> + *CoreType = (UINT8)((Eax & 0xFF000000) >> 24);
> + } else {
> + *CoreType = CPUID_CORE_TYPE_INTEL_CORE;
> + }
> +}
> +
> +/**
> + Function will go through all processors to identify Core or Atom
> + by checking Core Type and update in IsBigCore.
> +
> + @param[in] CpuApicIdOrderTable Point to a buffer which will be
> filled in Core type information.
> +**/
> +VOID
> +STATIC
> +EFIAPI
> +CollectCpuCoreType (
> + IN EFI_CPU_ID_ORDER_MAP *CpuApicIdOrderTable
> + )
> +{
> + CPUID_STRUCTURED_EXTENDED_FEATURE_FLAGS_EDX Edx;
> + UINT32 Eax;
> + UINTN ApNumber;
> + EFI_STATUS Status;
> + UINT8 CoreType;
> +
> + Status = mMpService->WhoAmI (
> + mMpService,
> + &ApNumber
> + );
> + ASSERT_EFI_ERROR (Status);
> +
> + ///
> + /// Check Hetero feature is supported
> + /// with CPUID.(EAX=7,ECX=0):EDX[15]=1
> + ///
> + AsmCpuidEx (CPUID_STRUCTURED_EXTENDED_FEATURE_FLAGS, 0, NULL, NULL, NULL,
> &Edx.Uint32);
> + if (Edx.Bits.Hybrid == 1) {
> + //
> + // Check which is the running core by reading CPUID.(EAX=1AH,
> ECX=00H):EAX
> + //
> + AsmCpuid (CPUID_HYBRID_INFORMATION, &Eax, NULL, NULL, NULL);
> + CoreType = (UINT8) ((Eax & 0xFF000000) >> 24);
> + } else {
> + CoreType = CPUID_CORE_TYPE_INTEL_CORE;
> + }
> +
> + if (CoreType == CPUID_CORE_TYPE_INTEL_CORE) {
> + CpuApicIdOrderTable[ApNumber].IsBigCore = TRUE;
> + }
> +}
> +
> /**
> Collect all processors information and create a Cpu Apic Id table.
>
> @@ -138,7 +237,7 @@ AppendCpuMapTableEntry (
> **/
> EFI_STATUS
> CreateCpuLocalApicInTable (
> - IN EFI_CPU_ID_ORDER_MAP *CpuApicIdOrderTable
> + IN EFI_CPU_ID_ORDER_MAP *CpuApicIdOrderTable
> )
> {
> EFI_STATUS Status;
> @@ -146,9 +245,24 @@ CreateCpuLocalApicInTable (
> UINT32 Index;
> UINT32 CurrProcessor;
> EFI_CPU_ID_ORDER_MAP *CpuIdMapPtr;
> + EFI_CPU_ID_ORDER_MAP *TempCpuApicIdOrderTable;
> UINT32 Socket;
>
> - Status = EFI_SUCCESS;
> + TempCpuApicIdOrderTable = AllocateZeroPool (mNumberOfCpus * sizeof
> (EFI_CPU_ID_ORDER_MAP));
> + if (TempCpuApicIdOrderTable == NULL) {
> + return EFI_UNSUPPORTED;
> + }
> +
> + CollectCpuCoreType (TempCpuApicIdOrderTable);
> + mMpService->StartupAllAPs (
> + mMpService, // This
> + (EFI_AP_PROCEDURE) CollectCpuCoreType, // Procedure
> + TRUE, // SingleThread
> + NULL, // WaitEvent
> + 0, //
> TimeoutInMicrosecsond
> + TempCpuApicIdOrderTable, //
> ProcedureArgument
> + NULL // FailedCpuList
> + );
>
> for (CurrProcessor = 0, Index = 0; CurrProcessor < mNumberOfCpus;
> CurrProcessor++, Index++) {
> Status = mMpService->GetProcessorInfo (
> @@ -157,9 +271,9 @@ CreateCpuLocalApicInTable (
> &ProcessorInfoBuffer
> );
>
> - CpuIdMapPtr = (EFI_CPU_ID_ORDER_MAP *) &CpuApicIdOrderTable[Index];
> + CpuIdMapPtr = (EFI_CPU_ID_ORDER_MAP *) &TempCpuApicIdOrderTable[Index];
> if ((ProcessorInfoBuffer.StatusFlag & PROCESSOR_ENABLED_BIT) != 0) {
> - CpuIdMapPtr->ApicId = (UINT32)ProcessorInfoBuffer.ProcessorId;
> + CpuIdMapPtr->ApicId = (UINT32) ProcessorInfoBuffer.ProcessorId;
> CpuIdMapPtr->Thread = ProcessorInfoBuffer.Location.Thread;
> CpuIdMapPtr->Flags = ((ProcessorInfoBuffer.StatusFlag &
> PROCESSOR_ENABLED_BIT) != 0);
> CpuIdMapPtr->SocketNum = ProcessorInfoBuffer.Location.Package;
> @@ -184,22 +298,43 @@ CreateCpuLocalApicInTable (
> //
> DEBUG ((DEBUG_INFO, "BspApicId - 0x%x\n", GetApicId ()));
>
> -
> //
> // Fill in AcpiProcessorUid.
> //
> for (Socket = 0; Socket < FixedPcdGet32 (PcdMaxCpuSocketCount); Socket++) {
> for (CurrProcessor = 0, Index = 0; CurrProcessor < mNumberOfCpus;
> CurrProcessor++) {
> - if (CpuApicIdOrderTable[CurrProcessor].Flags &&
> (CpuApicIdOrderTable[CurrProcessor].SocketNum == Socket)) {
> - CpuApicIdOrderTable[CurrProcessor].AcpiProcessorUid =
> (CpuApicIdOrderTable[CurrProcessor].SocketNum << mNumOfBitShift)
> + Index;
> + if (TempCpuApicIdOrderTable[CurrProcessor].Flags &&
> (TempCpuApicIdOrderTable[CurrProcessor].SocketNum == Socket)) {
> + TempCpuApicIdOrderTable[CurrProcessor].AcpiProcessorUid =
> (TempCpuApicIdOrderTable[CurrProcessor].SocketNum <<
> mNumOfBitShift) + Index;
> Index++;
> }
> }
> }
>
> + //
> + // Re-ordering Cpu cores information to CpuApicIdOrderTable
> + // by big core first, then small core.
> + //
> + for (Index = 0, CurrProcessor = 0; Index < mNumberOfCpus; Index++) {
> + if (TempCpuApicIdOrderTable[Index].IsBigCore) {
> + CopyMem (&CpuApicIdOrderTable[CurrProcessor],
> &TempCpuApicIdOrderTable[Index], sizeof (EFI_CPU_ID_ORDER_MAP));
> + CurrProcessor++;
> + }
> + }
> +
> + for (Index = 0; Index < mNumberOfCpus; Index++) {
> + if (!(TempCpuApicIdOrderTable[Index].IsBigCore)) {
> + CopyMem (&CpuApicIdOrderTable[CurrProcessor],
> &TempCpuApicIdOrderTable[Index], sizeof (EFI_CPU_ID_ORDER_MAP));
> + CurrProcessor++;
> + }
> + }
> +
> DEBUG ((DEBUG_INFO, "::ACPI:: APIC ID Order Table Init. mNumOfBitShift
> = %x\n", mNumOfBitShift));
> DebugDisplayReOrderTable (CpuApicIdOrderTable);
>
> + if (TempCpuApicIdOrderTable != NULL) {
> + FreePool (TempCpuApicIdOrderTable);
> + }
> +
> return Status;
> }
>
> --
> 2.32.0.windows.2
>
>
>
>
>
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