diff --git a/lib/extensions/debug/debugv8p9.c b/lib/extensions/debug/debugv8p9.c
new file mode 100644
index 0000000..f3cffa7
--- /dev/null
+++ b/lib/extensions/debug/debugv8p9.c
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2024, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <arch_features.h>
+#include <arch_helpers.h>
+#include <lib/extensions/debug_v8p9.h>
+
+void debugv8p9_extended_bp_wp_enable(cpu_context_t *ctx)
+{
+	el3_state_t *state = get_el3state_ctx(ctx);
+	u_register_t mdcr_el3_val = read_ctx_reg(state, CTX_MDCR_EL3);
+
+	/* When FEAT_Debugv8p9 is implemented:
+	 *
+	 * MDCR_EL3.EBWE: Set to 0b1
+	 * Enables use of additional breakpoints or watchpoints,
+	 * and disables trap to EL3 on accesses to debug register.
+	 */
+
+	mdcr_el3_val |= MDCR_EBWE_BIT;
+	write_ctx_reg(state, CTX_MDCR_EL3, mdcr_el3_val);
+}