Handle case when PAL calls 13 or 14 may not be available.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3708 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 11 insertions, 7 deletions

diff --git a/MdePkg/Library/SecPeiDxeTimerLibCpu/IpfTimerLib.c b/MdePkg/Library/SecPeiDxeTimerLibCpu/IpfTimerLib.c
index 8d3c3fd6f3..9fe33ec134 100644
--- a/MdePkg/Library/SecPeiDxeTimerLibCpu/IpfTimerLib.c
+++ b/MdePkg/Library/SecPeiDxeTimerLibCpu/IpfTimerLib.c
@@ -152,13 +152,6 @@ GetPerformanceCounterProperties (
   PAL_CALL_RETURN                   PalRet;

   UINT64                            BaseFrequence;

 

-  PalRet = PalCallStatic (NULL, 13, 0, 0, 0);

-  ASSERT (PalRet.Status == 0);

-  BaseFrequence = PalRet.r9;

-

-  PalRet = PalCallStatic (NULL, 14, 0, 0, 0);

-  ASSERT (PalRet.Status == 0);

-

   if (StartValue != NULL) {

     *StartValue = 0;

   }

@@ -167,5 +160,16 @@ GetPerformanceCounterProperties (
     *EndValue = (UINT64)(-1);

   }

 

+  PalRet = PalCallStatic (NULL, 13, 0, 0, 0);

+  if (PalRet.Status != 0) {

+    return 1000000;

+  }

+  BaseFrequence = PalRet.r9;

+

+  PalRet = PalCallStatic (NULL, 14, 0, 0, 0);

+  if (PalRet.Status != 0) {

+    return 1000000;

+  }

+

   return BaseFrequence * (PalRet.r11 >> 32) / (UINT32)PalRet.r11;

 }