diff options
| author | Jeff Fan <jeff.fan@intel.com> | 2014-07-10 02:12:27 +0000 |
|---|---|---|
| committer | vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524> | 2014-07-10 02:12:27 +0000 |
| commit | cf1eb6e6f85952b0fad82b937054f611cf148d57 (patch) | |
| tree | a73cb236c7dd69bd1997f0eb82bc35c269746227 /UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.c | |
| parent | 5039b444fe8c2b8757de53b009d9f4c6bb0f9302 (diff) | |
| download | edk2-platforms-cf1eb6e6f85952b0fad82b937054f611cf148d57.tar.xz | |
Introduce one PCD PcdCpuInitIpiDelayInMicroSeconds to specify the delay value after sending out INIT IPI instead of hard code 10 MicroSeconds.
Its default value is 10 millisecond per IA32 manual.
Platform could customize this PCD value for performance requirement.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Kinney, Michael <michael.d.kinney@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15650 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.c')
| -rw-r--r-- | UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.c b/UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.c index 23dc7910ae..ec54d01eb6 100644 --- a/UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.c +++ b/UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.c @@ -4,7 +4,7 @@ This local APIC library instance supports x2APIC capable processors
which have xAPIC and x2APIC modes.
- Copyright (c) 2010 - 2013, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2010 - 2014, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -517,7 +517,7 @@ SendInitSipiSipi ( ASSERT ((StartupRoutine & 0xfff) == 0);
SendInitIpi (ApicId);
- MicroSecondDelay (10);
+ MicroSecondDelay (PcdGet32(PcdCpuInitIpiDelayInMicroSeconds));
IcrLow.Uint32 = 0;
IcrLow.Bits.Vector = (StartupRoutine >> 12);
IcrLow.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_STARTUP;
@@ -550,7 +550,7 @@ SendInitSipiSipiAllExcludingSelf ( ASSERT ((StartupRoutine & 0xfff) == 0);
SendInitIpiAllExcludingSelf ();
- MicroSecondDelay (10);
+ MicroSecondDelay (PcdGet32(PcdCpuInitIpiDelayInMicroSeconds));
IcrLow.Uint32 = 0;
IcrLow.Bits.Vector = (StartupRoutine >> 12);
IcrLow.Bits.DeliveryMode = LOCAL_APIC_DELIVERY_MODE_STARTUP;
|