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UefiCpuPkg/SmmCpuFeaturesLib: Abstract PcdCpuMaxLogicalProcessorNumber

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REF:https://bugzilla.tianocore.org/show_bug.cgi?id=3218

Adds a new function called GetCpuMaxLogicalProcessorNumber() to
return the number of maximum CPU logical processors (currently
gUefiCpuPkgTokenSpaceGuid.PcdCpuMaxLogicalProcessorNumber).

This allows the the mechanism used to retrieve the CPU maximum
logical processor number to be abstracted from the logic that
needs the value.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20210217213227.1277-5-mikuback@linux.microsoft.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
This commit is contained in:
Michael Kubacki
2021-02-17 13:32:26 -08:00
committed by mergify[bot]
parent 2002e950ea
commit e542e05d4f
5 changed files with 45 additions and 1 deletions
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14
UefiCpuPkg/Library/SmmCpuFeaturesLib/CpuFeaturesLib.h
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@@ -31,4 +31,18 @@ FinishSmmCpuFeaturesInitializeProcessor (
VOID
);
/**
Gets the maximum number of logical processors from the PCD PcdCpuMaxLogicalProcessorNumber.
This access is abstracted from the PCD services to enforce that the PCD be
FixedAtBuild in the Standalone MM build of this driver.
@return The value of PcdCpuMaxLogicalProcessorNumber.
**/
UINT32
GetCpuMaxLogicalProcessorNumber (
VOID
);
#endif