From 580ad4a03d84ba7a97f10a27c3838c178227b685 Mon Sep 17 00:00:00 2001 From: mdkinney Date: Mon, 27 Aug 2007 01:01:44 +0000 Subject: 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 --- MdePkg/Library/SecPeiDxeTimerLibCpu/IpfTimerLib.c | 18 +++++++++++------- 1 file 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; } -- cgit v1.2.3