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UefiCpuPkg/CpuMpPei: Build one GUIDed HOB to save CPU MP Data 

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18003 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Jeff Fan 2015-07-15 03:41:07 +00:00 committed by vanjeff
parent d1cf93333f
commit 8805c91231
1 changed files with 33 additions and 0 deletions
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33
UefiCpuPkg/CpuMpPei/CpuMpPei.c
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@ -94,6 +94,31 @@ SortApicId (
}
}
}
/**
Get CPU MP Data pointer from the Guided HOB.
@return Pointer to Pointer to PEI CPU MP Data
**/
PEI_CPU_MP_DATA *
GetMpHobData (
VOID
)
{
EFI_HOB_GUID_TYPE *GuidHob;
VOID *DataInHob;
PEI_CPU_MP_DATA *CpuMpData;
CpuMpData = NULL;
GuidHob = GetFirstGuidHob (&gEfiCallerIdGuid);
if (GuidHob != NULL) {
DataInHob = GET_GUID_HOB_DATA (GuidHob);
CpuMpData = (PEI_CPU_MP_DATA *)(*(UINTN *)DataInHob);
}
ASSERT (CpuMpData != NULL);
return CpuMpData;
}
/**
This function will be called from AP reset code if BSP uses WakeUpAP.
@ -413,6 +438,14 @@ CpuMpPeimInit (
// Count processor number and collect processor information
//
ProcessorCount = CountProcessorNumber (PeiCpuMpData);
//
// Build location of PEI CPU MP DATA buffer in HOB
//
BuildGuidDataHob (
&gEfiCallerIdGuid,
(VOID *)&PeiCpuMpData,
sizeof(UINT64)
);
return EFI_SUCCESS;
}