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

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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 ()));
//