diff --git a/plat/imx/imx8m/imx8mm/platform.mk b/plat/imx/imx8m/imx8mm/platform.mk
index cd8de89..9727db3 100644
--- a/plat/imx/imx8m/imx8mm/platform.mk
+++ b/plat/imx/imx8m/imx8mm/platform.mk
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2019-2020, ARM Limited and Contributors. All rights reserved.
+# Copyright (c) 2019-2022, ARM Limited and Contributors. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
@@ -34,8 +34,6 @@
 				plat/imx/common/imx_sip_handler.c		\
 				plat/imx/common/imx_sip_svc.c			\
 				plat/imx/common/imx_uart_console.S		\
-				plat/imx/common/imx_ehf.c                       \
-				plat/imx/common/imx_sdei.c                      \
 				lib/xlat_tables/aarch64/xlat_tables.c		\
 				lib/xlat_tables/xlat_tables_common.c		\
 				lib/cpus/aarch64/cortex_a53.S			\
@@ -150,8 +148,11 @@
 IMX_BOOT_UART_BASE	?=	0x30890000
 $(eval $(call add_define,IMX_BOOT_UART_BASE))
 
-EL3_EXCEPTION_HANDLING := 1
-SDEI_SUPPORT := 1
+EL3_EXCEPTION_HANDLING := $(SDEI_SUPPORT)
+ifeq (${SDEI_SUPPORT}, 1)
+BL31_SOURCES 		+= 	plat/imx/common/imx_ehf.c	\
+				plat/imx/common/imx_sdei.c
+endif
 
 ifeq (${MEASURED_BOOT},1)
     MEASURED_BOOT_MK := drivers/measured_boot/event_log/event_log.mk
diff --git a/plat/imx/imx8m/imx8mn/platform.mk b/plat/imx/imx8m/imx8mn/platform.mk
index 2087089..2c746fe 100644
--- a/plat/imx/imx8m/imx8mn/platform.mk
+++ b/plat/imx/imx8m/imx8mn/platform.mk
@@ -1,5 +1,5 @@
 #
-# Copyright 2019-2020 NXP
+# Copyright 2019-2022 NXP
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
@@ -31,8 +31,6 @@
 				plat/imx/common/imx_sip_handler.c		\
 				plat/imx/common/imx_sip_svc.c			\
 				plat/imx/common/imx_uart_console.S		\
-				plat/imx/common/imx_ehf.c                       \
-				plat/imx/common/imx_sdei.c                      \
 				lib/cpus/aarch64/cortex_a53.S			\
 				drivers/arm/tzc/tzc380.c			\
 				drivers/delay_timer/delay_timer.c		\
@@ -57,5 +55,8 @@
 IMX_BOOT_UART_BASE	?=	0x30890000
 $(eval $(call add_define,IMX_BOOT_UART_BASE))
 
-EL3_EXCEPTION_HANDLING := 1
-SDEI_SUPPORT := 1
+EL3_EXCEPTION_HANDLING := $(SDEI_SUPPORT)
+ifeq (${SDEI_SUPPORT}, 1)
+BL31_SOURCES 		+= 	plat/imx/common/imx_ehf.c	\
+				plat/imx/common/imx_sdei.c
+endif
diff --git a/plat/imx/imx8m/imx8mp/platform.mk b/plat/imx/imx8m/imx8mp/platform.mk
index 823b5d6..d82ed4f 100644
--- a/plat/imx/imx8m/imx8mp/platform.mk
+++ b/plat/imx/imx8m/imx8mp/platform.mk
@@ -1,5 +1,5 @@
 #
-# Copyright 2019-2020 NXP
+# Copyright 2019-2022 NXP
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
@@ -30,8 +30,6 @@
 				plat/imx/imx8m/imx8mp/imx8mp_psci.c		\
 				plat/imx/imx8m/imx8mp/gpc.c			\
 				plat/imx/common/imx8_topology.c			\
-				plat/imx/common/imx_ehf.c                       \
-				plat/imx/common/imx_sdei.c                      \
 				plat/imx/common/imx_sip_handler.c		\
 				plat/imx/common/imx_sip_svc.c			\
 				plat/imx/common/imx_uart_console.S		\
@@ -149,5 +147,8 @@
 IMX_BOOT_UART_BASE	?=	0x30890000
 $(eval $(call add_define,IMX_BOOT_UART_BASE))
 
-EL3_EXCEPTION_HANDLING := 1
-SDEI_SUPPORT := 1
+EL3_EXCEPTION_HANDLING := $(SDEI_SUPPORT)
+ifeq (${SDEI_SUPPORT}, 1)
+BL31_SOURCES 		+= 	plat/imx/common/imx_ehf.c	\
+				plat/imx/common/imx_sdei.c
+endif