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| author | Rebecca Cran <rebecca@nuviainc.com> | 2021-02-07 17:52:42 -0700 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2021-02-08 19:35:23 +0000 |
| commit | 6e131aff00805deb9a508eb250f753faf11ce669 (patch) | |
| tree | 57380824638fa76cf1930ddec6305700f5559e4b /ArmPkg | |
| parent | 4f92cfa44d1141d9e57cceac0386c08b4be86d58 (diff) | |
| download | edk2-6e131aff00805deb9a508eb250f753faf11ce669.tar.gz edk2-6e131aff00805deb9a508eb250f753faf11ce669.tar.bz2 edk2-6e131aff00805deb9a508eb250f753faf11ce669.zip | |
ArmPkg: Add helper to read CCIDX status
Add a helper function to determine CCIDX support.
Signed-off-by: Rebecca Cran <rebecca@nuviainc.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Leif Lindholm <leif@nuviainc.com>
Diffstat (limited to 'ArmPkg')
| -rw-r--r-- | ArmPkg/Include/Library/ArmLib.h | 11 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/AArch64/AArch64Lib.c | 19 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/Arm/ArmV7Lib.c | 19 |
3 files changed, 47 insertions, 2 deletions
diff --git a/ArmPkg/Include/Library/ArmLib.h b/ArmPkg/Include/Library/ArmLib.h index fd4f06d242..70b9d816b7 100644 --- a/ArmPkg/Include/Library/ArmLib.h +++ b/ArmPkg/Include/Library/ArmLib.h @@ -725,6 +725,17 @@ ArmHasGicSystemRegisters ( VOID
);
+/** Checks if CCIDX is implemented.
+
+ @retval TRUE CCIDX is implemented.
+ @retval FALSE CCIDX is not implemented.
+**/
+BOOLEAN
+EFIAPI
+ArmHasCcidx (
+ VOID
+ );
+
#ifdef MDE_CPU_ARM
///
/// AArch32-only ID Register Helper functions
diff --git a/ArmPkg/Library/ArmLib/AArch64/AArch64Lib.c b/ArmPkg/Library/ArmLib/AArch64/AArch64Lib.c index 53e593bc99..191a5fea31 100644 --- a/ArmPkg/Library/ArmLib/AArch64/AArch64Lib.c +++ b/ArmPkg/Library/ArmLib/AArch64/AArch64Lib.c @@ -2,7 +2,7 @@ Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
Portions copyright (c) 2011 - 2014, ARM Ltd. All rights reserved.<BR>
- Copyright (c) 2020, NUVIA Inc. All rights reserved.<BR>
+ Copyright (c) 2021, NUVIA Inc. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -87,3 +87,20 @@ ArmHasGicSystemRegisters ( {
return ((ArmReadIdAA64Pfr0 () & AARCH64_PFR0_GIC) != 0);
}
+
+/** Checks if CCIDX is implemented.
+
+ @retval TRUE CCIDX is implemented.
+ @retval FALSE CCIDX is not implemented.
+**/
+BOOLEAN
+EFIAPI
+ArmHasCcidx (
+ VOID
+ )
+{
+ UINTN Mmfr2;
+
+ Mmfr2 = ArmReadIdAA64Mmfr2 ();
+ return (((Mmfr2 >> 20) & 0xF) == 1) ? TRUE : FALSE;
+}
diff --git a/ArmPkg/Library/ArmLib/Arm/ArmV7Lib.c b/ArmPkg/Library/ArmLib/Arm/ArmV7Lib.c index 9f81a72237..c5dd3f8b2f 100644 --- a/ArmPkg/Library/ArmLib/Arm/ArmV7Lib.c +++ b/ArmPkg/Library/ArmLib/Arm/ArmV7Lib.c @@ -2,7 +2,7 @@ Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
Copyright (c) 2011 - 2014, ARM Limited. All rights reserved.
- Copyright (c) 2020, NUVIA Inc. All rights reserved.<BR>
+ Copyright (c) 2021, NUVIA Inc. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -102,3 +102,20 @@ ArmHasSecurityExtensions ( {
return ((ArmReadIdPfr1 () & ARM_PFR1_SEC) != 0);
}
+
+/** Checks if CCIDX is implemented.
+
+ @retval TRUE CCIDX is implemented.
+ @retval FALSE CCIDX is not implemented.
+**/
+BOOLEAN
+EFIAPI
+ArmHasCcidx (
+ VOID
+ )
+{
+ UINTN Mmfr4;
+
+ Mmfr4 = ArmReadIdMmfr4 ();
+ return (((Mmfr4 >> 24) & 0xF) == 1) ? TRUE : FALSE;
+}
|