e806bb29cf
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3195 Support system has no enabled AP case in DxeCpuCacheInfoLib. Otherwise, if the system only has 1 BSP without any enabled AP, UEFI POST hangs when invoking StartupAllAPs protocol because EFI_NOT_STARTED is returned. Signed-off-by: Jason Lou <yun.lou@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com> Cc: Eric Dong <eric.dong@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Rahul Kumar <rahul1.kumar@intel.com>
128 lines
3.6 KiB
C
128 lines
3.6 KiB
C
/** @file
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Provides cache info for each package, core type, cache level and cache type.
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Copyright (c) 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 <PiDxe.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/CpuCacheInfoLib.h>
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#include <InternalCpuCacheInfoLib.h>
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/**
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Get EFI_MP_SERVICES_PROTOCOL pointer.
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@param[out] MpServices A pointer to the buffer where EFI_MP_SERVICES_PROTOCOL is stored
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@retval EFI_SUCCESS EFI_MP_SERVICES_PROTOCOL interface is returned
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@retval EFI_NOT_FOUND EFI_MP_SERVICES_PROTOCOL interface is not found
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**/
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EFI_STATUS
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CpuCacheInfoGetMpServices (
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OUT MP_SERVICES *MpServices
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)
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{
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EFI_STATUS Status;
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Status = gBS->LocateProtocol (&gEfiMpServiceProtocolGuid, NULL, (VOID **)&MpServices->Protocol);
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ASSERT_EFI_ERROR (Status);
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return Status;
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}
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/**
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Activate all of the logical processors.
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@param[in] MpServices MP_SERVICES structure.
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@param[in] Procedure A pointer to the function to be run on enabled logical processors.
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@param[in] ProcedureArgument The parameter passed into Procedure for all enabled logical processors.
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**/
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VOID
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CpuCacheInfoStartupAllCPUs (
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IN MP_SERVICES MpServices,
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IN EFI_AP_PROCEDURE Procedure,
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IN VOID *ProcedureArgument
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)
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{
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EFI_STATUS Status;
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Status = MpServices.Protocol->StartupAllAPs (MpServices.Protocol, Procedure, FALSE, NULL, 0, ProcedureArgument, NULL);
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if (Status == EFI_NOT_STARTED) {
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//
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// EFI_NOT_STARTED is returned when there is no enabled AP.
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// Treat this case as EFI_SUCCESS.
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//
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Status = EFI_SUCCESS;
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}
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ASSERT_EFI_ERROR (Status);
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Procedure (ProcedureArgument);
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}
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/**
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Get detailed information of the requested logical processor.
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@param[in] MpServices MP_SERVICES structure.
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@param[in] ProcessorNum The requested logical processor number.
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@param[out] ProcessorInfo A pointer to the buffer where the processor information is stored
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**/
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VOID
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CpuCacheInfoGetProcessorInfo (
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IN MP_SERVICES MpServices,
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IN UINTN ProcessorNum,
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OUT EFI_PROCESSOR_INFORMATION *ProcessorInfo
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)
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{
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EFI_STATUS Status;
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Status = MpServices.Protocol->GetProcessorInfo (MpServices.Protocol, ProcessorNum, ProcessorInfo);
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ASSERT_EFI_ERROR (Status);
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}
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/**
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Get the logical processor number.
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@param[in] MpServices MP_SERVICES structure.
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@retval Return the logical processor number.
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**/
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UINT32
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CpuCacheInfoWhoAmI (
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IN MP_SERVICES MpServices
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)
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{
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EFI_STATUS Status;
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UINTN ProcessorNum;
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Status = MpServices.Protocol->WhoAmI (MpServices.Protocol, &ProcessorNum);
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ASSERT_EFI_ERROR (Status);
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return (UINT32)ProcessorNum;
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}
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/**
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Get the total number of logical processors in the platform.
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@param[in] MpServices MP_SERVICES structure.
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@retval Return the total number of logical processors.
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**/
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UINT32
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CpuCacheInfoGetNumberOfProcessors (
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IN MP_SERVICES MpServices
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)
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{
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EFI_STATUS Status;
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UINTN NumberOfProcessor;
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UINTN NumberOfEnabledProcessor;
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Status = MpServices.Protocol->GetNumberOfProcessors (MpServices.Protocol, &NumberOfProcessor, &NumberOfEnabledProcessor);
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ASSERT_EFI_ERROR (Status);
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return (UINT32)NumberOfProcessor;
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}
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