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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2015-10-08 18:52:16 +0000 |
|---|---|---|
| committer | abiesheuvel <abiesheuvel@Edk2> | 2015-10-08 18:52:16 +0000 |
| commit | 4d9a4f62cfc8d04f822edb8f3467ba2de45a16de (patch) | |
| tree | cc5e67ef654e86f815d56225b7afbb23859b3025 /ArmPkg/Include | |
| parent | 5ab77c6630317f0ab2da1892e6d36a4b83e06a2f (diff) | |
| download | edk2-4d9a4f62cfc8d04f822edb8f3467ba2de45a16de.tar.gz edk2-4d9a4f62cfc8d04f822edb8f3467ba2de45a16de.tar.bz2 edk2-4d9a4f62cfc8d04f822edb8f3467ba2de45a16de.zip | |
ArmPkg/ArmLib MMU: add functions to set/clear RO and XN bits on regions
Use the refactored UpdateRegionMapping () to traverse the translation
tables, splitting block entries along the way if required, and apply
a mask + or on each to set or clear the PXN/UXN/XN or RO bits.
For now, the 32-bit ARM versions remain unimplemented.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18587 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPkg/Include')
| -rw-r--r-- | ArmPkg/Include/Library/ArmLib.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/ArmPkg/Include/Library/ArmLib.h b/ArmPkg/Include/Library/ArmLib.h index c83a5a7f1b..b4768841bd 100644 --- a/ArmPkg/Include/Library/ArmLib.h +++ b/ArmPkg/Include/Library/ArmLib.h @@ -661,4 +661,28 @@ ArmUnsetCpuActlrBit ( IN UINTN Bits
);
+RETURN_STATUS
+ArmSetMemoryRegionNoExec (
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length
+ );
+
+RETURN_STATUS
+ArmClearMemoryRegionNoExec (
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length
+ );
+
+RETURN_STATUS
+ArmSetMemoryRegionReadOnly (
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length
+ );
+
+RETURN_STATUS
+ArmClearMemoryRegionReadOnly (
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,
+ IN UINT64 Length
+ );
+
#endif // __ARM_LIB__
|