diff options
Diffstat (limited to 'UefiCpuPkg/Library')
| -rw-r--r-- | UefiCpuPkg/Library/MpInitLib/MpLib.c | 51 | ||||
| -rw-r--r-- | UefiCpuPkg/Library/MpInitLib/MpLib.h | 2 |
2 files changed, 29 insertions, 24 deletions
diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c index 69c53c6228..5cbcef70e8 100644 --- a/UefiCpuPkg/Library/MpInitLib/MpLib.c +++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c @@ -167,16 +167,19 @@ SaveLocalApicTimerSetting ( IN CPU_MP_DATA *CpuMpData
)
{
- //
- // Record the current local APIC timer setting of BSP
- //
- GetApicTimerState (
- &CpuMpData->DivideValue,
- &CpuMpData->PeriodicMode,
- &CpuMpData->Vector
- );
- CpuMpData->CurrentTimerCount = GetApicTimerCurrentCount ();
- CpuMpData->TimerInterruptState = GetApicTimerInterruptState ();
+ CpuMpData->InitTimerCount = GetApicTimerInitCount ();
+ if (CpuMpData->InitTimerCount != 0) {
+ //
+ // Record the current local APIC timer setting of BSP
+ //
+ GetApicTimerState (
+ &CpuMpData->DivideValue,
+ &CpuMpData->PeriodicMode,
+ &CpuMpData->Vector
+ );
+
+ CpuMpData->TimerInterruptState = GetApicTimerInterruptState ();
+ }
}
/**
@@ -189,19 +192,21 @@ SyncLocalApicTimerSetting ( IN CPU_MP_DATA *CpuMpData
)
{
- //
- // Sync local APIC timer setting from BSP to AP
- //
- InitializeApicTimer (
- CpuMpData->DivideValue,
- CpuMpData->CurrentTimerCount,
- CpuMpData->PeriodicMode,
- CpuMpData->Vector
- );
- //
- // Disable AP's local APIC timer interrupt
- //
- DisableApicTimerInterrupt ();
+ if (CpuMpData->InitTimerCount != 0) {
+ //
+ // Sync local APIC timer setting from BSP to AP
+ //
+ InitializeApicTimer (
+ CpuMpData->DivideValue,
+ CpuMpData->InitTimerCount,
+ CpuMpData->PeriodicMode,
+ CpuMpData->Vector
+ );
+ //
+ // Disable AP's local APIC timer interrupt
+ //
+ DisableApicTimerInterrupt ();
+ }
}
/**
diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.h b/UefiCpuPkg/Library/MpInitLib/MpLib.h index 88b31fecca..8742fa175b 100644 --- a/UefiCpuPkg/Library/MpInitLib/MpLib.h +++ b/UefiCpuPkg/Library/MpInitLib/MpLib.h @@ -289,7 +289,7 @@ struct _CPU_MP_DATA { CPU_AP_DATA *CpuData;
volatile MP_CPU_EXCHANGE_INFO *MpCpuExchangeInfo;
- UINT32 CurrentTimerCount;
+ UINT32 InitTimerCount;
UINTN DivideValue;
UINT8 Vector;
BOOLEAN PeriodicMode;
|