diff --git a/include/plat/arm/common/arm_def.h b/include/plat/arm/common/arm_def.h
index 9e82e29..5177b06 100644
--- a/include/plat/arm/common/arm_def.h
+++ b/include/plat/arm/common/arm_def.h
@@ -454,5 +454,11 @@
  */
 #define PLAT_PERCPU_BAKERY_LOCK_SIZE		(1 * CACHE_WRITEBACK_GRANULE)
 
+/* Priority levels for ARM platforms */
+#define PLAT_SDEI_CRITICAL_PRI		0x60
+#define PLAT_SDEI_NORMAL_PRI		0x70
+
+/* ARM platforms use 3 upper bits of secure interrupt priority */
+#define ARM_PRI_BITS			3
 
 #endif /* __ARM_DEF_H__ */
diff --git a/plat/arm/common/aarch64/arm_ehf.c b/plat/arm/common/aarch64/arm_ehf.c
new file mode 100644
index 0000000..785b7bb
--- /dev/null
+++ b/plat/arm/common/aarch64/arm_ehf.c
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <ehf.h>
+#include <platform_def.h>
+
+/*
+ * Enumeration of priority levels on ARM platforms.
+ */
+ehf_pri_desc_t arm_exceptions[] = {
+#if SDEI_SUPPORT
+	/* Critical priority SDEI */
+	EHF_PRI_DESC(ARM_PRI_BITS, PLAT_SDEI_CRITICAL_PRI),
+
+	/* Normal priority SDEI */
+	EHF_PRI_DESC(ARM_PRI_BITS, PLAT_SDEI_NORMAL_PRI),
+#endif
+};
+
+/* Plug in ARM exceptions to Exception Handling Framework. */
+EHF_REGISTER_PRIORITIES(arm_exceptions, ARRAY_SIZE(arm_exceptions), ARM_PRI_BITS);
diff --git a/plat/arm/common/arm_common.mk b/plat/arm/common/arm_common.mk
index 44eb43f..a3cd9d8 100644
--- a/plat/arm/common/arm_common.mk
+++ b/plat/arm/common/arm_common.mk
@@ -184,6 +184,10 @@
 				lib/pmf/pmf_smc.c
 endif
 
+ifeq (${EL3_EXCEPTION_HANDLING},1)
+BL31_SOURCES		+=	plat/arm/common/aarch64/arm_ehf.c
+endif
+
 ifneq (${TRUSTED_BOARD_BOOT},0)
 
     # Include common TBB sources