In preparation for introducing an implementation of the EFI memory
attributes protocol that is shared between ARM and AArch64, unify the
existing code that converts a page table descriptor into a
EFI_MEMORY_xxx bitfield, so it can be called from the generic code.
Signed-off-by: Ard Biesheuvel <a...@kernel.org>
---
ArmPkg/Drivers/CpuDxe/AArch64/Mmu.c | 8 ++++++++
ArmPkg/Drivers/CpuDxe/Arm/Mmu.c | 13 +++++++++++++
ArmPkg/Drivers/CpuDxe/CpuDxe.h | 5 +++++
3 files changed, 26 insertions(+)
diff --git a/ArmPkg/Drivers/CpuDxe/AArch64/Mmu.c
b/ArmPkg/Drivers/CpuDxe/AArch64/Mmu.c
index 8bb33046e707..a4bde2034fa0 100644
--- a/ArmPkg/Drivers/CpuDxe/AArch64/Mmu.c
+++ b/ArmPkg/Drivers/CpuDxe/AArch64/Mmu.c
@@ -79,6 +79,14 @@ PageAttributeToGcdAttribute (
return GcdAttributes;
}
+UINT64
+RegionAttributeToGcdAttribute (
+ IN UINTN PageAttributes
+ )
+{
+ return PageAttributeToGcdAttribute (PageAttributes);
+}
+
STATIC
UINT64
GetFirstPageAttribute (
diff --git a/ArmPkg/Drivers/CpuDxe/Arm/Mmu.c b/ArmPkg/Drivers/CpuDxe/Arm/Mmu.c
index e7acd84b8af9..a3a7fde9a872 100644
--- a/ArmPkg/Drivers/CpuDxe/Arm/Mmu.c
+++ b/ArmPkg/Drivers/CpuDxe/Arm/Mmu.c
@@ -13,6 +13,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
#include <Library/MemoryAllocationLib.h>
#include "CpuDxe.h"
+STATIC
EFI_STATUS
SectionToGcdAttributes (
IN UINT32 SectionAttributes,
@@ -77,6 +78,18 @@ SectionToGcdAttributes (
return EFI_SUCCESS;
}
+UINT64
+RegionAttributeToGcdAttribute (
+ IN UINTN PageAttributes
+ )
+{
+ UINT64 Result;
+
+ SectionToGcdAttributes (PageAttributes, &Result);
+ return Result;
+}
+
+STATIC
EFI_STATUS
PageToGcdAttributes (
IN UINT32 PageAttributes,
diff --git a/ArmPkg/Drivers/CpuDxe/CpuDxe.h b/ArmPkg/Drivers/CpuDxe/CpuDxe.h
index ff672390ce51..5a9f1ef1f969 100644
--- a/ArmPkg/Drivers/CpuDxe/CpuDxe.h
+++ b/ArmPkg/Drivers/CpuDxe/CpuDxe.h
@@ -126,4 +126,9 @@ SetGcdMemorySpaceAttributes (
IN UINT64 Attributes
);
+UINT64
+RegionAttributeToGcdAttribute (
+ IN UINTN PageAttributes
+ );
+
#endif // CPU_DXE_H_
--
2.39.1
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