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UefiCpuPkg: CpuDxe: Use PCD for AP detection timeout 

Use PcdCpuApInitTimeOutInMicroSeconds instead of hardcoded 100ms for
the time to wait for all APs to respond to first INIT SIPI SIPI
wake request.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Cc: Jeff Fan <jeff.fan@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18630 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Michael Kinney 2015-10-19 19:08:11 +00:00 committed by mdkinney
parent 944f45ae2f
commit 1e410eadd8
2 changed files with 5 additions and 4 deletions
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4
UefiCpuPkg/CpuDxe/ApStartup.c
View File

@ -452,9 +452,9 @@ StartApsStackless (
{ {
SendInitSipiSipiAllExcludingSelf ((UINT32)(UINTN)(VOID*) StartupCode); SendInitSipiSipiAllExcludingSelf ((UINT32)(UINTN)(VOID*) StartupCode);
// //
// Wait 100 milliseconds for APs to arrive at the ApEntryPoint routine // Wait for APs to arrive at the ApEntryPoint routine
// //
MicroSecondDelay (100 * 1000); MicroSecondDelay (PcdGet32 (PcdCpuApInitTimeOutInMicroSeconds));
return EFI_SUCCESS; return EFI_SUCCESS;
} }

5
UefiCpuPkg/CpuDxe/CpuDxe.inf
View File

@ -84,8 +84,9 @@
gEfiSecPlatformInformationPpiGuid ## UNDEFINED # HOB gEfiSecPlatformInformationPpiGuid ## UNDEFINED # HOB
[Pcd] [Pcd]
gUefiCpuPkgTokenSpaceGuid.PcdCpuMaxLogicalProcessorNumber ## CONSUMES gUefiCpuPkgTokenSpaceGuid.PcdCpuMaxLogicalProcessorNumber ## CONSUMES
gUefiCpuPkgTokenSpaceGuid.PcdCpuApStackSize ## CONSUMES gUefiCpuPkgTokenSpaceGuid.PcdCpuApStackSize ## CONSUMES
gUefiCpuPkgTokenSpaceGuid.PcdCpuApInitTimeOutInMicroSeconds ## CONSUMES
[Depex] [Depex]
TRUE TRUE