ArmPlatformPkg/EblCmdLib: Fixed 'performance' command

Added support for performance counter that counts up or down

Signed-off-by: Olivier Martin <olivier.martin@arm.com>




git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13747 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 9 insertions, 3 deletions

diff --git a/ArmPlatformPkg/Library/EblCmdLib/EblCmdLib.c b/ArmPlatformPkg/Library/EblCmdLib/EblCmdLib.c
index f9e4b40a8e..4c298a61cf 100644
--- a/ArmPlatformPkg/Library/EblCmdLib/EblCmdLib.c
+++ b/ArmPlatformPkg/Library/EblCmdLib/EblCmdLib.c
@@ -223,8 +223,14 @@ EblPerformance (
   UINT64      Start, Stop, TimeStamp;

   UINT64      Delta, TicksPerSecond, Milliseconds, Microseconds;

   UINTN       Index;

+  BOOLEAN     CountUp;

 

-  TicksPerSecond = GetPerformanceCounterProperties (NULL, NULL);

+  TicksPerSecond = GetPerformanceCounterProperties (&Start, &Stop);

+  if (Start < Stop) {

+    CountUp = TRUE;

+  } else {

+    CountUp = FALSE;

+  }

 

   Key       = 0;

   do {

@@ -235,7 +241,7 @@ EblPerformance (
           // The entry for EBL is still running so the stop time will be zero. Skip it

           AsciiPrint ("   running     %a\n", ImageHandleToPdbFileName ((EFI_HANDLE)Handle));

         } else {

-          Delta = Start - Stop;

+          Delta =  CountUp?(Stop - Start):(Start - Stop);

           Microseconds = DivU64x64Remainder (MultU64x32 (Delta, 1000000), TicksPerSecond, NULL);

           AsciiPrint ("%10ld us  %a\n", Microseconds, ImageHandleToPdbFileName ((EFI_HANDLE)Handle));

         }

@@ -252,7 +258,7 @@ EblPerformance (
     if (Key != 0) {

       for (Index = 0; mTokenList[Index] != NULL; Index++) {

         if (AsciiStriCmp (mTokenList[Index], Token) == 0) {

-          Delta = Start - Stop;

+          Delta =  CountUp?(Stop - Start):(Start - Stop);

           TimeStamp += Delta;

           Milliseconds = DivU64x64Remainder (MultU64x32 (Delta, 1000), TicksPerSecond, NULL);

           AsciiPrint ("%6a %6ld ms\n", Token, Milliseconds);