Revision: 18003
http://sourceforge.net/p/edk2/code/18003
Author: vanjeff
Date: 2015-07-15 03:41:07 +0000 (Wed, 15 Jul 2015)
Log Message:
-----------
UefiCpuPkg/CpuMpPei: Build one GUIDed HOB to save CPU MP Data
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <[email protected]>
Reviewed-by: Feng Tian <[email protected]>
Reviewed-by: Jiewen Yao <[email protected]>
Modified Paths:
--------------
trunk/edk2/UefiCpuPkg/CpuMpPei/CpuMpPei.c
Modified: trunk/edk2/UefiCpuPkg/CpuMpPei/CpuMpPei.c
===================================================================
--- trunk/edk2/UefiCpuPkg/CpuMpPei/CpuMpPei.c 2015-07-15 03:40:41 UTC (rev
18002)
+++ trunk/edk2/UefiCpuPkg/CpuMpPei/CpuMpPei.c 2015-07-15 03:41:07 UTC (rev
18003)
@@ -94,7 +94,32 @@
}
}
}
+
/**
+ 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.
@param ExchangeInfo Pointer to the MP exchange info buffer
@@ -413,6 +438,14 @@
// 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;
}
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