diff --git a/ArmPkg/Include/Chipset/ArmCortexA9.h b/ArmPkg/Include/Chipset/ArmCortexA9.h
deleted file mode 100644
index a89aeebd4a..0000000000
--- a/ArmPkg/Include/Chipset/ArmCortexA9.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/** @file
-
-  Copyright (c) 2011, ARM Limited. All rights reserved.
-
-  SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#ifndef ARM_CORTEX_A9_H_
-#define ARM_CORTEX_A9_H_
-
-#include <Chipset/ArmV7.h>
-
-//
-// Cortex A9 feature bit definitions
-//
-#define A9_FEATURE_PARITY  (1<<9)
-#define A9_FEATURE_AOW     (1<<8)
-#define A9_FEATURE_EXCL    (1<<7)
-#define A9_FEATURE_SMP     (1<<6)
-#define A9_FEATURE_FOZ     (1<<3)
-#define A9_FEATURE_DPREF   (1<<2)
-#define A9_FEATURE_HINT    (1<<1)
-#define A9_FEATURE_FWD     (1<<0)
-
-//
-// Cortex A9 Watchdog
-//
-#define ARM_A9_WATCHDOG_REGION  0x600
-
-#define ARM_A9_WATCHDOG_LOAD_REGISTER     0x20
-#define ARM_A9_WATCHDOG_CONTROL_REGISTER  0x28
-
-#define ARM_A9_WATCHDOG_WATCHDOG_MODE  (1 << 3)
-#define ARM_A9_WATCHDOG_TIMER_MODE     (0 << 3)
-#define ARM_A9_WATCHDOG_SINGLE_SHOT    (0 << 1)
-#define ARM_A9_WATCHDOG_AUTORELOAD     (1 << 1)
-#define ARM_A9_WATCHDOG_ENABLE         1
-
-//
-// SCU register offsets & masks
-//
-#define A9_SCU_CONTROL_OFFSET     0x0
-#define A9_SCU_CONFIG_OFFSET      0x4
-#define A9_SCU_INVALL_OFFSET      0xC
-#define A9_SCU_FILT_START_OFFSET  0x40
-#define A9_SCU_FILT_END_OFFSET    0x44
-#define A9_SCU_SACR_OFFSET        0x50
-#define A9_SCU_SSACR_OFFSET       0x54
-
-UINTN
-EFIAPI
-ArmGetScuBaseAddress (
-  VOID
-  );
-
-#endif // ARM_CORTEX_A9_H_