diff --git a/include/lib/cpus/aarch64/cortex_deimos.h b/include/lib/cpus/aarch64/cortex_a77.h
similarity index 66%
rename from include/lib/cpus/aarch64/cortex_deimos.h
rename to include/lib/cpus/aarch64/cortex_a77.h
index 9d024b6..0467ef3 100644
--- a/include/lib/cpus/aarch64/cortex_deimos.h
+++ b/include/lib/cpus/aarch64/cortex_a77.h
@@ -4,22 +4,23 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef CORTEX_DEIMOS_H
-#define CORTEX_DEIMOS_H
+#ifndef CORTEX_A77_H
+#define CORTEX_A77_H
 
 #include <lib/utils_def.h>
 
-#define CORTEX_DEIMOS_MIDR					U(0x410FD0D0)
+/* Cortex-A77 MIDR */
+#define CORTEX_A77_MIDR					U(0x410FD0D0)
 
 /*******************************************************************************
  * CPU Extended Control register specific definitions.
  ******************************************************************************/
-#define CORTEX_DEIMOS_CPUECTLR_EL1				S3_0_C15_C1_4
+#define CORTEX_A77_CPUECTLR_EL1				S3_0_C15_C1_4
 
 /*******************************************************************************
  * CPU Power Control register specific definitions.
  ******************************************************************************/
-#define CORTEX_DEIMOS_CPUPWRCTLR_EL1				S3_0_C15_C2_7
-#define CORTEX_DEIMOS_CPUPWRCTLR_EL1_CORE_PWRDN_BIT		(U(1) << 0)
+#define CORTEX_A77_CPUPWRCTLR_EL1			S3_0_C15_C2_7
+#define CORTEX_A77_CPUPWRCTLR_EL1_CORE_PWRDN_BIT	(U(1) << 0)
 
-#endif /* CORTEX_DEIMOS_H */
+#endif /* CORTEX_A77_H */