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Update PeiMemoryAllocationLib instance to support AllocateReservedPages() API. 

Signed-off-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: michael.d.kinney@intel.com

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14466 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Liming Gao 2013-07-12 02:49:22 +00:00 committed by lgao4
parent 068a82fc5a
commit 1dde8b08dd
2 changed files with 33 additions and 3 deletions
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33
MdePkg/Library/PeiMemoryAllocationLib/MemoryAllocationLib.c
View File

@ -2,7 +2,7 @@
Support routines for memory allocation routines
based on PeiService for PEI phase drivers.
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2013, 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
@ -21,6 +21,7 @@
#include <Library/PeiServicesLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/HobLib.h>
/**
@ -44,15 +45,43 @@ InternalAllocatePages (
{
EFI_STATUS Status;
EFI_PHYSICAL_ADDRESS Memory;
EFI_MEMORY_TYPE RequestType;
EFI_PEI_HOB_POINTERS Hob;
if (Pages == 0) {
return NULL;
}
Status = PeiServicesAllocatePages (MemoryType, Pages, &Memory);
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);
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;
}

3
MdePkg/Library/PeiMemoryAllocationLib/PeiMemoryAllocationLib.inf
View File

@ -4,7 +4,7 @@
# Memory Allocation Library that uses PEI Services to allocate memory.
# Free operations are ignored.
#
# Copyright (c) 2007 - 2010, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2007 - 2013, 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
@ -40,4 +40,5 @@
DebugLib
BaseMemoryLib
PeiServicesLib
HobLib