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UefiCpuPkg/MpInitLib: Save CPU MP Data pointer

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In PeiMpInitLib, save CPU MP Data pointer into one local Guided HOB.
In DxeMpInitLib, save CPU MP Data pointer into one global variable.

Add helper functions GetCpuMpData()/SaveCpuMpData().

v5:
  1. Move CPU_INIT_MP_LIB_HOB_GUID from MpLib.c to MpLib.h to make
     all C files visible.

Cc: Michael Kinney <michael.d.kinney@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Cc: Giri P Mudusuru <giri.p.mudusuru@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Michael Kinney <michael.d.kinney@intel.com>
This commit is contained in:
Jeff Fan
2016-07-21 16:08:12 +08:00
parent 94f63c765f
commit 93ca4c0fd7
4 changed files with 174 additions and 0 deletions
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30
UefiCpuPkg/Library/MpInitLib/MpLib.c
View File

@@ -14,6 +14,8 @@
#include "MpLib.h"
EFI_GUID mCpuInitMpLibHobGuid = CPU_INIT_MP_LIB_HOB_GUID;
/**
Get the Application Processors state.
@@ -303,6 +305,12 @@ MpInitLibInitialize (
//
MtrrGetAllMtrrs (&CpuMpData->MtrrTable);
//
// Initialize global data for MP support
//
InitMpGlobalData (CpuMpData);
return EFI_SUCCESS;
}
@@ -386,3 +394,25 @@ MpInitLibGetNumberOfProcessors (
{
return EFI_UNSUPPORTED;
}
/**
Get pointer to CPU MP Data structure from GUIDed HOB.
@return The pointer to CPU MP Data structure.
**/
CPU_MP_DATA *
GetCpuMpDataFromGuidedHob (
VOID
)
{
EFI_HOB_GUID_TYPE *GuidHob;
VOID *DataInHob;
CPU_MP_DATA *CpuMpData;
CpuMpData = NULL;
GuidHob = GetFirstGuidHob (&mCpuInitMpLibHobGuid);
if (GuidHob != NULL) {
DataInHob = GET_GUID_HOB_DATA (GuidHob);
CpuMpData = (CPU_MP_DATA *) (*(UINTN *) DataInHob);
}
return CpuMpData;
}