diff options
Diffstat (limited to 'SourceLevelDebugPkg')
| -rw-r--r-- | SourceLevelDebugPkg/Library/DebugAgent/SmmDebugAgent/SmmDebugAgentLib.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/SourceLevelDebugPkg/Library/DebugAgent/SmmDebugAgent/SmmDebugAgentLib.c b/SourceLevelDebugPkg/Library/DebugAgent/SmmDebugAgent/SmmDebugAgentLib.c index ac96a00240..544067b4d6 100644 --- a/SourceLevelDebugPkg/Library/DebugAgent/SmmDebugAgent/SmmDebugAgentLib.c +++ b/SourceLevelDebugPkg/Library/DebugAgent/SmmDebugAgent/SmmDebugAgentLib.c @@ -190,6 +190,8 @@ InitializeDebugAgent ( DEBUG_AGENT_MAILBOX *Mailbox;
UINT64 *MailboxLocation;
UINT32 DebugTimerFrequency;
+ BOOLEAN PeriodicMode;
+ UINTN TimerCycle;
switch (InitFlag) {
case DEBUG_AGENT_INIT_SMM:
@@ -275,7 +277,15 @@ InitializeDebugAgent ( case DEBUG_AGENT_INIT_ENTER_SMI:
SaveDebugRegister ();
InitializeDebugIdt ();
-
+ //
+ // Check if CPU APIC Timer is working, otherwise initialize it.
+ //
+ GetApicTimerState (NULL, &PeriodicMode, NULL);
+ TimerCycle = GetApicTimerInitCount ();
+ if (PeriodicMode != TRUE || TimerCycle == 0) {
+ InitializeDebugTimer (NULL);
+ DisableApicTimerInterrupt ();
+ }
Mailbox = GetMailboxPointer ();
if (GetDebugFlag (DEBUG_AGENT_FLAG_AGENT_IN_PROGRESS) == 1) {
//
|