MdePkg: Update PeiMemoryAllocationLib to allocate EfiReservedMemoryType memory directly.

The old implementation was to allocate EfiBootServicesData memory first,
and then update the MemoryType of memory allocation hob to
EfiReservedMemoryType.

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

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17395 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 2 insertions, 29 deletions

diff --git a/MdePkg/Library/PeiMemoryAllocationLib/MemoryAllocationLib.c b/MdePkg/Library/PeiMemoryAllocationLib/MemoryAllocationLib.c
index afc3909612..a6cce6c235 100644
--- a/MdePkg/Library/PeiMemoryAllocationLib/MemoryAllocationLib.c
+++ b/MdePkg/Library/PeiMemoryAllocationLib/MemoryAllocationLib.c
@@ -2,7 +2,7 @@
   Support routines for memory allocation routines 

   based on PeiService for PEI phase drivers.

 

-  Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>

+  Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>

   This program and the accompanying materials                          

   are licensed and made available under the terms and conditions of the BSD License         

   which accompanies this distribution.  The full text of the license may be found at        

@@ -45,42 +45,15 @@ InternalAllocatePages (
 {

   EFI_STATUS            Status;

   EFI_PHYSICAL_ADDRESS  Memory; 

-  EFI_MEMORY_TYPE       RequestType;

-  EFI_PEI_HOB_POINTERS  Hob;

 

   if (Pages == 0) {

     return NULL;

   }

 

-  RequestType = MemoryType;

-  if (MemoryType == EfiReservedMemoryType) {

-    //

-    // PEI AllocatePages() doesn't support EfiReservedMemoryType. 

-    // Change RequestType to EfiBootServicesData for memory allocation.

-    //

-    RequestType = EfiBootServicesData;

-  }

-

-  Status = PeiServicesAllocatePages (RequestType, Pages, &Memory);

+  Status = PeiServicesAllocatePages (MemoryType, Pages, &Memory);

   if (EFI_ERROR (Status)) {

     return NULL;

   }

-  

-  if (MemoryType == EfiReservedMemoryType) {

-    //

-    // Memory type needs to be updated to EfiReservedMemoryType. Per PI spec Volume 1, 

-    // PEI AllocatePages() will automate the creation of the Memory Allocation HOB types. 

-    // Search Memory Allocation HOB and find the matched memory region,

-    // then change its memory type to EfiReservedMemoryType.

-    //

-    Hob.Raw = GetFirstHob (EFI_HOB_TYPE_MEMORY_ALLOCATION);

-    while (Hob.Raw != NULL && Hob.MemoryAllocation->AllocDescriptor.MemoryBaseAddress != Memory) {

-      Hob.Raw = GET_NEXT_HOB (Hob);

-      Hob.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, Hob.Raw);

-    }

-    ASSERT (Hob.Raw != NULL);

-    Hob.MemoryAllocation->AllocDescriptor.MemoryType = EfiReservedMemoryType;

-  }

 

   return (VOID *) (UINTN) Memory;

 }