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/BaseXApicLib/BaseXApicLib.c | |
| parent | 5039b444fe8c2b8757de53b009d9f4c6bb0f9302 (diff) | |
| download | edk2-cf1eb6e6f85952b0fad82b937054f611cf148d57.tar.gz edk2-cf1eb6e6f85952b0fad82b937054f611cf148d57.tar.bz2 edk2-cf1eb6e6f85952b0fad82b937054f611cf148d57.zip | |
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/BaseXApicLib/BaseXApicLib.c')
| -rw-r--r-- | UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c b/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c index bd97fae9c2..6bf9c43dc9 100644 --- a/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c +++ b/UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c @@ -3,7 +3,7 @@ This local APIC library instance supports xAPIC mode only.
- 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
@@ -438,7 +438,7 @@ 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;
@@ -471,7 +471,7 @@ 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;
|