[Patch v4 29/46] UefiCpuPkg/MpInitLib: Implementation of MpInitLibWhoAmI()

[Jeff Fan <jeff.fan@intel.com>]

Cc: Michael Kinney <michael.d.kinney@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Cc: Giri P Mudusuru <giri.p.mudusuru@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
---
 UefiCpuPkg/Library/MpInitLib/MpLib.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c
index 58eb392..225f172 100644
--- a/UefiCpuPkg/Library/MpInitLib/MpLib.c
+++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c
@@ -1131,7 +1131,15 @@ MpInitLibWhoAmI (
   OUT UINTN                    *ProcessorNumber
   )
 {
-  return EFI_UNSUPPORTED;
+  CPU_MP_DATA           *CpuMpData;
+
+  CpuMpData = GetCpuMpData ();
+
+  if (ProcessorNumber == NULL) {
+    return EFI_INVALID_PARAMETER;
+  }
+
+  return GetProcessorNumber (CpuMpData, ProcessorNumber);
 }
 
 /**
-- 
2.7.4.windows.1