diff options
Diffstat (limited to 'ArmPkg')
| -rw-r--r-- | ArmPkg/Library/ArmLib/AArch64/AArch64Lib.h | 11 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/AArch64/AArch64Support.S | 3 |
2 files changed, 14 insertions, 0 deletions
diff --git a/ArmPkg/Library/ArmLib/AArch64/AArch64Lib.h b/ArmPkg/Library/ArmLib/AArch64/AArch64Lib.h index 85bcecda73..cfc0c878a4 100644 --- a/ArmPkg/Library/ArmLib/AArch64/AArch64Lib.h +++ b/ArmPkg/Library/ArmLib/AArch64/AArch64Lib.h @@ -41,5 +41,16 @@ EFIAPI ArmReadIdAA64Pfr0 (
VOID
);
+
+/** Reads the ID_AA64MMFR2_EL1 register.
+
+ @return The contents of the ID_AA64MMFR2_EL1 register.
+**/
+UINTN
+EFIAPI
+ArmReadIdAA64Mmfr2 (
+ VOID
+ );
+
#endif // __AARCH64_LIB_H__
diff --git a/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S b/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S index 129205d2ac..d3cc1e8671 100644 --- a/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S +++ b/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S @@ -425,6 +425,9 @@ ASM_FUNC(ArmCallWFI) wfi
ret
+ASM_FUNC(ArmReadIdAA64Mmfr2)
+ mrs x0, ID_AA64MMFR2_EL1 // read EL1 MMFR2
+ ret
ASM_FUNC(ArmReadMpidr)
mrs x0, mpidr_el1 // read EL1 MPIDR
|