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ArmPkg: Changed Uncached System Memory from EFI_MEMORY_UC to EFI_MEMORY_WC

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EFI_MEMORY_UC is mapped to Strongly Ordered memory while EFI_MEMORY_WC is
mapped to Uncached Normal/System memory.
This change improve performance while accessing uncached regions in the
System Memory.


Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eugene Cohen <eugene@hp.com>
Reviewed-by: Olivier Martin <oliviermartin@arm.com



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13693 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
oliviermartin
2012-08-31 16:24:01 +00:00
parent f1660263de
commit 3f5aa1932f
2 changed files with 5 additions and 3 deletions
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2
ArmPkg/Library/UncachedMemoryAllocationLib/UncachedMemoryAllocationLib.c
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@ -245,7 +245,7 @@ UncachedInternalAllocateAlignedPages (
gAttributes = Descriptor.Attributes;
}
Status = gDS->SetMemorySpaceAttributes (Memory, EFI_PAGES_TO_SIZE (Pages), EFI_MEMORY_UC);
Status = gDS->SetMemorySpaceAttributes (Memory, EFI_PAGES_TO_SIZE (Pages), EFI_MEMORY_WC);
ASSERT_EFI_ERROR (Status);
return (VOID *)(UINTN)Memory;