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ArmPkg: Invalidate cache after allocating UC memory 

It is implied that the memory returned from UncachedMemoryAllocationLib
should have cache invalidated. So we invalidate memory range after
changing memory attribute to uncached.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Heyi Guo <heyi.guo@linaro.org>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18920 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Heyi Guo 2015-11-23 07:48:33 +00:00 committed by abiesheuvel
parent 78b6eb659d
commit e266db592b
2 changed files with 4 additions and 0 deletions
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3
ArmPkg/Library/UncachedMemoryAllocationLib/UncachedMemoryAllocationLib.c
View File

@ -25,6 +25,7 @@
#include <Library/PcdLib.h>
#include <Library/ArmLib.h>
#include <Library/DxeServicesTableLib.h>
#include <Library/CacheMaintenanceLib.h>
VOID *
UncachedInternalAllocatePages (
@ -165,6 +166,8 @@ AllocatePagesFromList (
return Status;
}
InvalidateDataCacheRange ((VOID *)(UINTN)Memory, EFI_PAGES_TO_SIZE (Pages));
NewNode = AllocatePool (sizeof (FREE_PAGE_NODE));
if (NewNode == NULL) {
ASSERT (FALSE);

1
ArmPkg/Library/UncachedMemoryAllocationLib/UncachedMemoryAllocationLib.inf
View File

@ -38,6 +38,7 @@
MemoryAllocationLib
PcdLib
DxeServicesTableLib
CacheMaintenanceLib
[Pcd]
gArmTokenSpaceGuid.PcdArmFreeUncachedMemorySizeThreshold