Revision: 17604
http://sourceforge.net/p/edk2/code/17604
Author: vanjeff
Date: 2015-06-10 01:45:18 +0000 (Wed, 10 Jun 2015)
Log Message:
-----------
SourceLevelDebugPkg/DxeDebugAgent: Initialize Local APIC Timer
Now Debug Agent library uses Local APIC Timer to implement time-out mechanism.
For AP, its local APIC timer may not work. This fix is to initialize Local
APIC timer if it doesn't work as expected when debugging AP function.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <[email protected]>
Reviewed-by: Ruiyu Ni <[email protected]>
Modified Paths:
--------------
trunk/edk2/SourceLevelDebugPkg/Library/DebugAgent/DxeDebugAgent/DxeDebugAgentLib.c
Modified:
trunk/edk2/SourceLevelDebugPkg/Library/DebugAgent/DxeDebugAgent/DxeDebugAgentLib.c
===================================================================
---
trunk/edk2/SourceLevelDebugPkg/Library/DebugAgent/DxeDebugAgent/DxeDebugAgentLib.c
2015-06-10 00:26:48 UTC (rev 17603)
+++
trunk/edk2/SourceLevelDebugPkg/Library/DebugAgent/DxeDebugAgent/DxeDebugAgentLib.c
2015-06-10 01:45:18 UTC (rev 17604)
@@ -365,9 +365,19 @@
IA32_DESCRIPTOR IdtDescriptor;
IA32_DESCRIPTOR *Ia32Idtr;
IA32_IDT_ENTRY *Ia32IdtEntry;
+ BOOLEAN PeriodicMode;
+ UINTN TimerCycle;
if (InitFlag == DEBUG_AGENT_INIT_DXE_AP) {
//
+ // Check if CPU APIC Timer is working, otherwise initialize it.
+ //
+ GetApicTimerState (NULL, &PeriodicMode, NULL);
+ TimerCycle = GetApicTimerInitCount ();
+ if (!PeriodicMode || TimerCycle == 0) {
+ InitializeDebugTimer (NULL, FALSE);
+ }
+ //
// Invoked by AP, enable interrupt to let AP could receive IPI from other
processors
//
EnableInterrupts ();
------------------------------------------------------------------------------
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