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| author | Ard Biesheuvel <ardb@kernel.org> | 2023-01-31 23:23:14 +0100 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2023-03-16 21:14:49 +0000 |
| commit | f4a6f63999a1de2f1cca002db0624c14b22c9b05 (patch) | |
| tree | 358a63f88c8c27abac9d6bd25bf9ff1a23ea8e9a /ArmPkg/Drivers | |
| parent | ae2c904c3de9d42b70805e42c687de874a5c6d25 (diff) | |
| download | edk2-f4a6f63999a1de2f1cca002db0624c14b22c9b05.tar.gz edk2-f4a6f63999a1de2f1cca002db0624c14b22c9b05.tar.bz2 edk2-f4a6f63999a1de2f1cca002db0624c14b22c9b05.zip | |
ArmPkg/CpuDxe: Expose unified region-to-EFI attribute conversion
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_xx bitfield, so it can be called from the generic code.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
Diffstat (limited to 'ArmPkg/Drivers')
| -rw-r--r-- | ArmPkg/Drivers/CpuDxe/AArch64/Mmu.c | 17 | ||||
| -rw-r--r-- | ArmPkg/Drivers/CpuDxe/Arm/Mmu.c | 38 | ||||
| -rw-r--r-- | ArmPkg/Drivers/CpuDxe/CpuDxe.h | 14 |
3 files changed, 69 insertions, 0 deletions
diff --git a/ArmPkg/Drivers/CpuDxe/AArch64/Mmu.c b/ArmPkg/Drivers/CpuDxe/AArch64/Mmu.c index 8bda11f08a..0859c7418a 100644 --- a/ArmPkg/Drivers/CpuDxe/AArch64/Mmu.c +++ b/ArmPkg/Drivers/CpuDxe/AArch64/Mmu.c @@ -83,6 +83,23 @@ PageAttributeToGcdAttribute ( return GcdAttributes;
}
+/**
+ Convert an arch specific set of page attributes into a mask
+ of EFI_MEMORY_xx constants.
+
+ @param PageAttributes The set of page attributes.
+
+ @retval The mask of EFI_MEMORY_xx constants.
+
+**/
+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 07faab8216..afd6aab602 100644 --- a/ArmPkg/Drivers/CpuDxe/Arm/Mmu.c +++ b/ArmPkg/Drivers/CpuDxe/Arm/Mmu.c @@ -13,6 +13,15 @@ SPDX-License-Identifier: BSD-2-Clause-Patent #include <Library/MemoryAllocationLib.h>
#include "CpuDxe.h"
+/**
+ Convert a set of ARM short descriptor section attributes into a mask
+ of EFI_MEMORY_xx constants.
+
+ @param SectionAttributes The set of page attributes.
+ @param GcdAttributes Pointer to the return value.
+
+**/
+STATIC
EFI_STATUS
SectionToGcdAttributes (
IN UINT32 SectionAttributes,
@@ -74,6 +83,35 @@ SectionToGcdAttributes ( return EFI_SUCCESS;
}
+/**
+ Convert an arch specific set of page attributes into a mask
+ of EFI_MEMORY_xx constants.
+
+ @param PageAttributes The set of page attributes.
+
+ @retval The mask of EFI_MEMORY_xx constants.
+
+**/
+UINT64
+RegionAttributeToGcdAttribute (
+ IN UINTN PageAttributes
+ )
+{
+ UINT64 Result;
+
+ SectionToGcdAttributes (PageAttributes, &Result);
+ return Result;
+}
+
+/**
+ Convert a set of ARM short descriptor page attributes into a mask
+ of EFI_MEMORY_xx constants.
+
+ @param PageAttributes The set of page attributes.
+ @param GcdAttributes Pointer to the return value.
+
+**/
+STATIC
EFI_STATUS
PageToGcdAttributes (
IN UINT32 PageAttributes,
diff --git a/ArmPkg/Drivers/CpuDxe/CpuDxe.h b/ArmPkg/Drivers/CpuDxe/CpuDxe.h index ff672390ce..39e1bbed44 100644 --- a/ArmPkg/Drivers/CpuDxe/CpuDxe.h +++ b/ArmPkg/Drivers/CpuDxe/CpuDxe.h @@ -126,4 +126,18 @@ SetGcdMemorySpaceAttributes ( IN UINT64 Attributes
);
+/**
+ Convert an arch specific set of page attributes into a mask
+ of EFI_MEMORY_xx constants.
+
+ @param PageAttributes The set of page attributes.
+
+ @retval The mask of EFI_MEMORY_xx constants.
+
+**/
+UINT64
+RegionAttributeToGcdAttribute (
+ IN UINTN PageAttributes
+ );
+
#endif // CPU_DXE_H_
|