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UefiCpuPkg/MpInitLib: Update AP information when BSP switched 

When BSP switched, we need to update some AP information. For example,
ApStartupSignalBuffer and ApTopOfStack.

Cc: Feng Tian <feng.tian@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
This commit is contained in:
Jeff Fan 2016-11-14 11:43:26 +08:00
parent 845c5be1fd
commit b3775af277
2 changed files with 4 additions and 0 deletions
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3
UefiCpuPkg/Library/MpInitLib/MpLib.c
View File

@ -549,6 +549,8 @@ ApWakeupFunction (
GetProcessorNumber (CpuMpData, &ProcessorNumber);
CpuMpData->CpuData[ProcessorNumber].ApFunction = 0;
CpuMpData->CpuData[ProcessorNumber].ApFunctionArgument = 0;
ApStartupSignalBuffer = CpuMpData->CpuData[ProcessorNumber].StartupApSignal;
CpuInfoInHob[ProcessorNumber].ApTopOfStack = CpuInfoInHob[CpuMpData->NewBspNumber].ApTopOfStack;
} else {
//
// Re-get the CPU APICID and Initial APICID
@ -1420,6 +1422,7 @@ SwitchBSPWorker (
CpuMpData->BSPInfo.State = CPU_SWITCH_STATE_IDLE;
CpuMpData->APInfo.State = CPU_SWITCH_STATE_IDLE;
CpuMpData->SwitchBspFlag = TRUE;
CpuMpData->NewBspNumber = ProcessorNumber;
//
// Clear the BSP bit of MSR_IA32_APIC_BASE

1
UefiCpuPkg/Library/MpInitLib/MpLib.h
View File

@ -216,6 +216,7 @@ struct _CPU_MP_DATA {
AP_INIT_STATE InitFlag;
BOOLEAN X2ApicEnable;
BOOLEAN SwitchBspFlag;
UINTN NewBspNumber;
CPU_EXCHANGE_ROLE_INFO BSPInfo;
CPU_EXCHANGE_ROLE_INFO APInfo;
MTRR_SETTINGS MtrrTable;