diff options
| author | Jeff Fan <jeff.fan@intel.com> | 2016-07-21 16:08:12 +0800 |
|---|---|---|
| committer | Jeff Fan <jeff.fan@intel.com> | 2016-08-17 20:00:28 +0800 |
| commit | 93ca4c0fd7d96f182790e56f147463ab1799da2a (patch) | |
| tree | c6bd58289d48f2e85f27982b75a118f18869d7a8 /UefiCpuPkg/Library/MpInitLib/MpLib.c | |
| parent | 94f63c765fb0b48b287cc1cf3bc61a46dde4f524 (diff) | |
| download | edk2-platforms-93ca4c0fd7d96f182790e56f147463ab1799da2a.tar.xz | |
UefiCpuPkg/MpInitLib: Save CPU MP Data pointer
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>
Diffstat (limited to 'UefiCpuPkg/Library/MpInitLib/MpLib.c')
| -rw-r--r-- | UefiCpuPkg/Library/MpInitLib/MpLib.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c index 7384f5d0d2..8dfbf5706a 100644 --- a/UefiCpuPkg/Library/MpInitLib/MpLib.c +++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c @@ -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;
+}
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