ArmPkg: Add helper to read the Memory Model Features Register 2

[mirror_edk2.git] / ArmPkg / Library / ArmLib / AArch64 / AArch64Support.S

diff --git a/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S b/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S
index 129205d2ac27e323b37852e850771bf49adca063..d3cc1e86716b93a44265c1b133dee945ad335ae6 100644 (file)
--- a/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S
+++ b/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S
@@ -425,6 +425,9 @@ ASM_FUNC(ArmCallWFI)
   wfi\r
   ret\r
 \r
+ASM_FUNC(ArmReadIdAA64Mmfr2)\r
+  mrs   x0, ID_AA64MMFR2_EL1           // read EL1 MMFR2\r
+  ret\r
 \r
 ASM_FUNC(ArmReadMpidr)\r
   mrs   x0, mpidr_el1           // read EL1 MPIDR\r