diff --git a/plat/imx/imx7/picopi/include/platform_def.h b/plat/imx/imx7/picopi/include/platform_def.h
index 1af1d0c..141571c 100644
--- a/plat/imx/imx7/picopi/include/platform_def.h
+++ b/plat/imx/imx7/picopi/include/platform_def.h
@@ -13,15 +13,15 @@
 
 #define PLATFORM_STACK_SIZE		0x1000
 
-#define PLATFORM_MAX_CPUS_PER_CLUSTER	2
-#define PLATFORM_CLUSTER_COUNT		1
+#define PLATFORM_MAX_CPUS_PER_CLUSTER	U(2)
+#define PLATFORM_CLUSTER_COUNT		U(1)
 #define PLATFORM_CLUSTER0_CORE_COUNT	PLATFORM_MAX_CPUS_PER_CLUSTER
 
 #define PLATFORM_CORE_COUNT		PLATFORM_CLUSTER0_CORE_COUNT
 
-#define PICOPI_PRIMARY_CPU		0
+#define PICOPI_PRIMARY_CPU		U(0)
 
-#define PLAT_NUM_PWR_DOMAINS		(PLATFORM_CLUSTER_COUNT + \
+#define PLAT_NUM_PWR_DOMAINS	(PLATFORM_CLUSTER_COUNT + \
 					PLATFORM_CORE_COUNT)
 #define PLAT_MAX_PWR_LVL		MPIDR_AFFLVL1
 
diff --git a/plat/imx/imx7/warp7/include/platform_def.h b/plat/imx/imx7/warp7/include/platform_def.h
index 4f71908..4afcb54 100644
--- a/plat/imx/imx7/warp7/include/platform_def.h
+++ b/plat/imx/imx7/warp7/include/platform_def.h
@@ -13,15 +13,15 @@
 
 #define PLATFORM_STACK_SIZE		0x1000
 
-#define PLATFORM_MAX_CPUS_PER_CLUSTER	2
-#define PLATFORM_CLUSTER_COUNT		1
+#define PLATFORM_MAX_CPUS_PER_CLUSTER	U(2)
+#define PLATFORM_CLUSTER_COUNT		U(1)
 #define PLATFORM_CLUSTER0_CORE_COUNT	PLATFORM_MAX_CPUS_PER_CLUSTER
-#define PLATFORM_CLUSTER1_CORE_COUNT	0
+#define PLATFORM_CLUSTER1_CORE_COUNT	U(0)
 
 #define PLATFORM_CORE_COUNT		(PLATFORM_CLUSTER0_CORE_COUNT + \
 					 PLATFORM_CLUSTER1_CORE_COUNT)
 
-#define WARP7_PRIMARY_CPU		0
+#define WARP7_PRIMARY_CPU		U(0)
 
 #define PLAT_NUM_PWR_DOMAINS		(PLATFORM_CLUSTER_COUNT + \
 					PLATFORM_CORE_COUNT)
diff --git a/plat/imx/imx8m/imx8mm/include/platform_def.h b/plat/imx/imx8m/imx8mm/include/platform_def.h
index fc35dac..56caab7 100644
--- a/plat/imx/imx8m/imx8mm/include/platform_def.h
+++ b/plat/imx/imx8m/imx8mm/include/platform_def.h
@@ -10,11 +10,11 @@
 #define PLATFORM_STACK_SIZE		0xB00
 #define CACHE_WRITEBACK_GRANULE		64
 
-#define PLAT_PRIMARY_CPU		0x0
-#define PLATFORM_MAX_CPU_PER_CLUSTER	4
-#define PLATFORM_CLUSTER_COUNT		1
-#define PLATFORM_CLUSTER0_CORE_COUNT	4
-#define PLATFORM_CLUSTER1_CORE_COUNT	0
+#define PLAT_PRIMARY_CPU		U(0x0)
+#define PLATFORM_MAX_CPU_PER_CLUSTER	U(4)
+#define PLATFORM_CLUSTER_COUNT		U(1)
+#define PLATFORM_CLUSTER0_CORE_COUNT	U(4)
+#define PLATFORM_CLUSTER1_CORE_COUNT	U(0)
 #define PLATFORM_CORE_COUNT		(PLATFORM_CLUSTER0_CORE_COUNT)
 
 #define IMX_PWR_LVL0			MPIDR_AFFLVL0
diff --git a/plat/imx/imx8m/imx8mq/include/platform_def.h b/plat/imx/imx8m/imx8mq/include/platform_def.h
index 9aa759f..9db3a13 100644
--- a/plat/imx/imx8m/imx8mq/include/platform_def.h
+++ b/plat/imx/imx8m/imx8mq/include/platform_def.h
@@ -10,11 +10,11 @@
 #define PLATFORM_STACK_SIZE		0x800
 #define CACHE_WRITEBACK_GRANULE		64
 
-#define PLAT_PRIMARY_CPU		0x0
-#define PLATFORM_MAX_CPU_PER_CLUSTER	4
-#define PLATFORM_CLUSTER_COUNT		1
-#define PLATFORM_CLUSTER0_CORE_COUNT	4
-#define PLATFORM_CLUSTER1_CORE_COUNT	0
+#define PLAT_PRIMARY_CPU		U(0x0)
+#define PLATFORM_MAX_CPU_PER_CLUSTER	U(4)
+#define PLATFORM_CLUSTER_COUNT		U(1)
+#define PLATFORM_CLUSTER0_CORE_COUNT	U(4)
+#define PLATFORM_CLUSTER1_CORE_COUNT	U(0)
 #define PLATFORM_CORE_COUNT		(PLATFORM_CLUSTER0_CORE_COUNT)
 
 #define IMX_PWR_LVL0			MPIDR_AFFLVL0
diff --git a/plat/imx/imx8qm/include/platform_def.h b/plat/imx/imx8qm/include/platform_def.h
index 138a4e1..b54943d 100644
--- a/plat/imx/imx8qm/include/platform_def.h
+++ b/plat/imx/imx8qm/include/platform_def.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -15,11 +15,11 @@
 #define PLATFORM_STACK_SIZE		0X400
 #define CACHE_WRITEBACK_GRANULE		64
 
-#define PLAT_PRIMARY_CPU		0x0
-#define PLATFORM_MAX_CPU_PER_CLUSTER	4
-#define PLATFORM_CLUSTER_COUNT		2
-#define PLATFORM_CLUSTER0_CORE_COUNT	4
-#define PLATFORM_CLUSTER1_CORE_COUNT	2
+#define PLAT_PRIMARY_CPU		U(0x0)
+#define PLATFORM_MAX_CPU_PER_CLUSTER	U(4)
+#define PLATFORM_CLUSTER_COUNT		U(2)
+#define PLATFORM_CLUSTER0_CORE_COUNT	U(4)
+#define PLATFORM_CLUSTER1_CORE_COUNT	U(2)
 #define PLATFORM_CORE_COUNT		(PLATFORM_CLUSTER0_CORE_COUNT + \
 					 PLATFORM_CLUSTER1_CORE_COUNT)
 
diff --git a/plat/imx/imx8qx/include/platform_def.h b/plat/imx/imx8qx/include/platform_def.h
index 108627f..41475ff 100644
--- a/plat/imx/imx8qx/include/platform_def.h
+++ b/plat/imx/imx8qx/include/platform_def.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -15,12 +15,12 @@
 #define PLATFORM_STACK_SIZE		0x400
 #define CACHE_WRITEBACK_GRANULE		64
 
-#define PLAT_PRIMARY_CPU		0x0
-#define PLATFORM_MAX_CPU_PER_CLUSTER	4
-#define PLATFORM_CLUSTER_COUNT		1
-#define PLATFORM_CORE_COUNT		4
-#define PLATFORM_CLUSTER0_CORE_COUNT	4
-#define PLATFORM_CLUSTER1_CORE_COUNT	0
+#define PLAT_PRIMARY_CPU		U(0x0)
+#define PLATFORM_MAX_CPU_PER_CLUSTER	U(4)
+#define PLATFORM_CLUSTER_COUNT		U(1)
+#define PLATFORM_CORE_COUNT		U(4)
+#define PLATFORM_CLUSTER0_CORE_COUNT	U(4)
+#define PLATFORM_CLUSTER1_CORE_COUNT	U(0)
 
 #define PWR_DOMAIN_AT_MAX_LVL           U(1)
 #define PLAT_MAX_PWR_LVL                U(2)