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MdeModulePkg DxeIpl: Skip install MemoryInfoHob if this hob exists

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Add the check at DxeLoadCore() on MdeModulePkg\Core\DxeIplPeim\DxeLoad.c
to skip install the "gEfiMemoryTypeInformationGuid" hob if it is already
installed.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18018 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Liming Gao
2015-07-16 05:42:58 +00:00
committed by lgao4
parent 90ae1f0270
commit d1d89e86ed
1 changed files with 30 additions and 25 deletions
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55
MdeModulePkg/Core/DxeIplPeim/DxeLoad.c
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@ -273,31 +273,36 @@ DxeLoadCore (
// //
} }
Status = PeiServicesLocatePpi ( if (GetFirstGuidHob ((CONST EFI_GUID *)&gEfiMemoryTypeInformationGuid) == NULL) {
&gEfiPeiReadOnlyVariable2PpiGuid, //
0, // Don't build GuidHob if GuidHob has been installed.
NULL, //
(VOID **)&Variable Status = PeiServicesLocatePpi (
); &gEfiPeiReadOnlyVariable2PpiGuid,
if (!EFI_ERROR (Status)) { 0,
DataSize = sizeof (MemoryData); NULL,
Status = Variable->GetVariable ( (VOID **)&Variable
Variable, );
EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME, if (!EFI_ERROR (Status)) {
&gEfiMemoryTypeInformationGuid, DataSize = sizeof (MemoryData);
NULL, Status = Variable->GetVariable (
&DataSize, Variable,
&MemoryData EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,
); &gEfiMemoryTypeInformationGuid,
if (!EFI_ERROR (Status) && ValidateMemoryTypeInfoVariable(MemoryData, DataSize)) { NULL,
// &DataSize,
// Build the GUID'd HOB for DXE &MemoryData
// );
BuildGuidDataHob ( if (!EFI_ERROR (Status) && ValidateMemoryTypeInfoVariable(MemoryData, DataSize)) {
&gEfiMemoryTypeInformationGuid, //
MemoryData, // Build the GUID'd HOB for DXE
DataSize //
); BuildGuidDataHob (
&gEfiMemoryTypeInformationGuid,
MemoryData,
DataSize
);
}
} }
} }