1 files changed, 8 insertions, 1 deletions
diff --git a/ArmPkg/Library/ArmLib/ArmLibPrivate.h b/ArmPkg/Library/ArmLib/ArmLibPrivate.h
index 2e90739eb8..8959bdd9d7 100644
--- a/ArmPkg/Library/ArmLib/ArmLibPrivate.h
+++ b/ArmPkg/Library/ArmLib/ArmLibPrivate.h
@@ -61,7 +61,14 @@ CPSRRead (
   VOID
   );
 
-UINT32
+/** Reads the CCSIDR register for the specified cache.
+
+  @param CSSELR The CSSELR cache selection register value.
+
+  @return The contents of the CCSIDR_EL1 register for the specified cache, when in AARCH64 mode.
+          Returns the contents of the CCSIDR register in AARCH32 mode.
+**/
+UINTN
 ReadCCSIDR (
   IN UINT32 CSSELR
   );