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UefiCpuPkg/MpLib.c: Set AP state after X2APIC mode enabled 

After X2APIC mode is enabled, APs need to be set tp IDLE state, otherwise APs
cannot be waken up by MP PPI services.

https://bugzilla.tianocore.org/show_bug.cgi?id=505

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: Feng Tian <feng.tian@intel.com>
This commit is contained in:
Jeff Fan 2017-04-25 11:22:00 +08:00
parent 9d64a9fd9e
commit 59a119f0fc
1 changed files with 8 additions and 0 deletions
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8
UefiCpuPkg/Library/MpInitLib/MpLib.c
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@ -434,6 +434,8 @@ CollectProcessorCount (
IN CPU_MP_DATA *CpuMpData
)
{
UINTN Index;
//
// Send 1st broadcast IPI to APs to wakeup APs
//
@ -465,6 +467,12 @@ CollectProcessorCount (
// Enable x2APIC on BSP
//
SetApicMode (LOCAL_APIC_MODE_X2APIC);
//
// Set BSP/Aps state to IDLE
//
for (Index = 0; Index < CpuMpData->CpuCount; Index++) {
SetApState (&CpuMpData->CpuData[Index], CpuStateIdle);
}
}
DEBUG ((DEBUG_INFO, "APIC MODE is %d\n", GetApicMode ()));
//