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| author | Leif Lindholm <leif@nuviainc.com> | 2020-12-18 11:55:52 +0000 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2020-12-18 15:27:26 +0000 |
| commit | 5cc25cff5de191583f3ecb2d9a7e9a13baa70071 (patch) | |
| tree | 1c83d57184b39170cb8cb2f2c8973cb1edef4c39 /ArmPkg/Include/Library | |
| parent | 6573ae8c85750a0badb902eb9ffe37b13fc74ba6 (diff) | |
| download | edk2-5cc25cff5de191583f3ecb2d9a7e9a13baa70071.tar.gz edk2-5cc25cff5de191583f3ecb2d9a7e9a13baa70071.tar.bz2 edk2-5cc25cff5de191583f3ecb2d9a7e9a13baa70071.zip | |
ArmPkg/ArmLib: add ArmHasGicSystemRegisters () helper function
Create a helper function to eliminate direct feature register reading,
which gets messy in code shared between ARM/AArch64.
Returns BOOLEAN True if the CPU implements the GIC System Register
Interface (any version), otherwise returns BOOL False.
Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Signed-off-by: Leif Lindholm <leif@nuviainc.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
Diffstat (limited to 'ArmPkg/Include/Library')
| -rw-r--r-- | ArmPkg/Include/Library/ArmLib.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/ArmPkg/Include/Library/ArmLib.h b/ArmPkg/Include/Library/ArmLib.h index 5a27b7c2fc..8a364f2ca9 100644 --- a/ArmPkg/Include/Library/ArmLib.h +++ b/ArmPkg/Include/Library/ArmLib.h @@ -2,6 +2,7 @@ Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
Copyright (c) 2011 - 2016, ARM Ltd. All rights reserved.<BR>
+ Copyright (c) 2020, NUVIA Inc. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -715,4 +716,21 @@ ArmGetPhysicalAddressBits ( VOID
);
+
+///
+/// ID Register Helper functions
+///
+
+/**
+ Check whether the CPU supports the GIC system register interface (any version)
+
+ @return Whether GIC System Register Interface is supported
+
+**/
+BOOLEAN
+EFIAPI
+ArmHasGicSystemRegisters (
+ VOID
+ );
+
#endif // __ARM_LIB__
|