sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

UefiCpuPkg/CpuMpPei: Set X2APIC flag if one x2APIC ID larger than 254

Browse Source 
If there are any logical processor reporting an APIC ID of 255 or greater, set
X2ApicEnable flag.

GetInitialApicId() will return x2APIC ID if CPUID leaf B supported.

Cc: Feng Tian <feng.tian@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18933 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Jeff Fan
2015-11-25 02:47:34 +00:00
committed by vanjeff
parent bf14e1077a
commit 2f0261b7dc
2 changed files with 18 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
UefiCpuPkg/CpuMpPei/CpuMpPei.c
View File

@@ -146,11 +146,20 @@ ApCFunction (
PeiCpuMpData = ExchangeInfo->PeiCpuMpData;
if (PeiCpuMpData->InitFlag) {
//
// This is first time AP wakeup, get BIST inforamtion from AP stack
// This is first time AP wakeup, get BIST information from AP stack
//
BistData = *(UINTN *) (PeiCpuMpData->Buffer + NumApsExecuting * PeiCpuMpData->CpuApStackSize - sizeof (UINTN));
PeiCpuMpData->CpuData[NumApsExecuting].ApicId = GetInitialApicId ();
PeiCpuMpData->CpuData[NumApsExecuting].Health.Uint32 = (UINT32) BistData;
PeiCpuMpData->CpuData[NumApsExecuting].ApicId = GetInitialApicId ();
if (PeiCpuMpData->CpuData[NumApsExecuting].ApicId >= 0xFF) {
//
// Set x2APIC mode if there are any logical processor reporting
// an APIC ID of 255 or greater.
//
AcquireSpinLock(&PeiCpuMpData->MpLock);
PeiCpuMpData->X2ApicEnable = TRUE;
ReleaseSpinLock(&PeiCpuMpData->MpLock);
}
//
// Sync BSP's Mtrr table to all wakeup APs and load microcode on APs.
//
@@ -363,15 +372,16 @@ CountProcessorNumber (
//
if (PcdGet32 (PcdCpuMaxLogicalProcessorNumber) > 1) {
//
// Send broadcast IPI to APs to wakeup APs
// Send 1st broadcast IPI to APs to wakeup APs
//
PeiCpuMpData->InitFlag = 1;
PeiCpuMpData->InitFlag = TRUE;
PeiCpuMpData->X2ApicEnable = FALSE;
WakeUpAP (PeiCpuMpData, TRUE, 0, NULL, NULL);
//
// Wait for AP task to complete and then exit.
//
MicroSecondDelay (PcdGet32 (PcdCpuApInitTimeOutInMicroSeconds));
PeiCpuMpData->InitFlag = 0;
PeiCpuMpData->InitFlag = FALSE;
PeiCpuMpData->CpuCount += (UINT32)PeiCpuMpData->MpCpuExchangeInfo->NumApsExecuting;
ASSERT (PeiCpuMpData->CpuCount <= PcdGet32 (PcdCpuMaxLogicalProcessorNumber));
//
@@ -439,6 +449,7 @@ PrepareAPStartupVector (
PeiCpuMpData->CpuData[0].ApicId = GetInitialApicId ();
PeiCpuMpData->CpuData[0].Health.Uint32 = 0;
PeiCpuMpData->EndOfPeiFlag = FALSE;
InitializeSpinLock(&PeiCpuMpData->MpLock);
CopyMem (&PeiCpuMpData->AddressMap, &AddressMap, sizeof (MP_ASSEMBLY_ADDRESS_MAP));
//