diff options
| -rw-r--r-- | UefiCpuPkg/CpuMpPei/Microcode.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/UefiCpuPkg/CpuMpPei/Microcode.c b/UefiCpuPkg/CpuMpPei/Microcode.c index 3fd3a8bb81..67280d334d 100644 --- a/UefiCpuPkg/CpuMpPei/Microcode.c +++ b/UefiCpuPkg/CpuMpPei/Microcode.c @@ -53,6 +53,7 @@ MicrocodeDetect ( UINTN Index;
UINT8 PlatformId;
UINT32 RegEax;
+ UINT32 CurrentRevision;
UINT32 LatestRevision;
UINTN TotalSize;
UINT32 CheckSum32;
@@ -69,6 +70,14 @@ MicrocodeDetect ( return;
}
+ CurrentRevision = GetCurrentMicrocodeSignature ();
+ if (CurrentRevision != 0) {
+ //
+ // Skip loading microcode if it has been loaded successfully
+ //
+ return;
+ }
+
ExtendedTableLength = 0;
//
// Here data of CPUID leafs have not been collected into context buffer, so
|