Revision: 18018
http://sourceforge.net/p/edk2/code/18018
Author: lgao4
Date: 2015-07-16 05:42:58 +0000 (Thu, 16 Jul 2015)
Log Message:
-----------
MdeModulePkg DxeIpl: Skip install MemoryInfoHob if this hob exists
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 <[email protected]>
Reviewed-by: Star Zeng <[email protected]>
Modified Paths:
--------------
trunk/edk2/MdeModulePkg/Core/DxeIplPeim/DxeLoad.c
Modified: trunk/edk2/MdeModulePkg/Core/DxeIplPeim/DxeLoad.c
===================================================================
--- trunk/edk2/MdeModulePkg/Core/DxeIplPeim/DxeLoad.c 2015-07-16 02:37:53 UTC
(rev 18017)
+++ trunk/edk2/MdeModulePkg/Core/DxeIplPeim/DxeLoad.c 2015-07-16 05:42:58 UTC
(rev 18018)
@@ -273,31 +273,36 @@
//
}
- Status = PeiServicesLocatePpi (
- &gEfiPeiReadOnlyVariable2PpiGuid,
- 0,
- NULL,
- (VOID **)&Variable
- );
- if (!EFI_ERROR (Status)) {
- DataSize = sizeof (MemoryData);
- Status = Variable->GetVariable (
- Variable,
- EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,
- &gEfiMemoryTypeInformationGuid,
- NULL,
- &DataSize,
- &MemoryData
- );
- if (!EFI_ERROR (Status) && ValidateMemoryTypeInfoVariable(MemoryData,
DataSize)) {
- //
- // Build the GUID'd HOB for DXE
- //
- BuildGuidDataHob (
- &gEfiMemoryTypeInformationGuid,
- MemoryData,
- DataSize
- );
+ if (GetFirstGuidHob ((CONST EFI_GUID *)&gEfiMemoryTypeInformationGuid) ==
NULL) {
+ //
+ // Don't build GuidHob if GuidHob has been installed.
+ //
+ Status = PeiServicesLocatePpi (
+ &gEfiPeiReadOnlyVariable2PpiGuid,
+ 0,
+ NULL,
+ (VOID **)&Variable
+ );
+ if (!EFI_ERROR (Status)) {
+ DataSize = sizeof (MemoryData);
+ Status = Variable->GetVariable (
+ Variable,
+ EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,
+ &gEfiMemoryTypeInformationGuid,
+ NULL,
+ &DataSize,
+ &MemoryData
+ );
+ if (!EFI_ERROR (Status) && ValidateMemoryTypeInfoVariable(MemoryData,
DataSize)) {
+ //
+ // Build the GUID'd HOB for DXE
+ //
+ BuildGuidDataHob (
+ &gEfiMemoryTypeInformationGuid,
+ MemoryData,
+ DataSize
+ );
+ }
}
}
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