Revision: 19094
http://sourceforge.net/p/edk2/code/19094
Author: vanjeff
Date: 2015-12-02 03:25:45 +0000 (Wed, 02 Dec 2015)
Log Message:
-----------
UefiCpuPkg/CpuMpPei: Sync BSP's CRx to APs when initialization
Save BSP's volatile register and sync CRx register to APs when AP 1st wake up.
(Sync patch r19088 from main trunk.)
Cc: Feng Tian <[email protected]>
Cc: Michael Kinney <[email protected]>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <[email protected]>
Reviewed-by: Feng Tian <[email protected]>
Revision Links:
--------------
http://sourceforge.net/p/edk2/code/19088
Modified Paths:
--------------
branches/UDK2015/UefiCpuPkg/CpuMpPei/CpuMpPei.c
Modified: branches/UDK2015/UefiCpuPkg/CpuMpPei/CpuMpPei.c
===================================================================
--- branches/UDK2015/UefiCpuPkg/CpuMpPei/CpuMpPei.c 2015-12-02 03:25:21 UTC
(rev 19093)
+++ branches/UDK2015/UefiCpuPkg/CpuMpPei/CpuMpPei.c 2015-12-02 03:25:45 UTC
(rev 19094)
@@ -230,6 +230,10 @@
if (PeiCpuMpData->InitFlag) {
ProcessorNumber = NumApsExecuting;
//
+ // Sync BSP's Control registers to APs
+ //
+ RestoreVolatileRegisters (&PeiCpuMpData->CpuData[0].VolatileRegisters,
FALSE);
+ //
// This is first time AP wakeup, get BIST information from AP stack
//
BistData = *(UINTN *) (PeiCpuMpData->Buffer + ProcessorNumber *
PeiCpuMpData->CpuApStackSize - sizeof (UINTN));
@@ -560,6 +564,7 @@
PeiCpuMpData->CpuData[0].Health.Uint32 = 0;
PeiCpuMpData->EndOfPeiFlag = FALSE;
InitializeSpinLock(&PeiCpuMpData->MpLock);
+ SaveVolatileRegisters (&PeiCpuMpData->CpuData[0].VolatileRegisters);
CopyMem (&PeiCpuMpData->AddressMap, &AddressMap, sizeof
(MP_ASSEMBLY_ADDRESS_MAP));
//
------------------------------------------------------------------------------
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