diff --git a/drivers/mtd/nand/raw_nand.c b/drivers/mtd/nand/raw_nand.c
index 1fb5fac..021e30b 100644
--- a/drivers/mtd/nand/raw_nand.c
+++ b/drivers/mtd/nand/raw_nand.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019-2020, STMicroelectronics - All Rights Reserved
+ * Copyright (c) 2019-2022, STMicroelectronics - All Rights Reserved
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -8,13 +8,13 @@
 #include <errno.h>
 #include <stddef.h>
 
-#include <platform_def.h>
-
 #include <common/debug.h>
 #include <drivers/delay_timer.h>
 #include <drivers/raw_nand.h>
 #include <lib/utils.h>
 
+#include <platform_def.h>
+
 #define ONFI_SIGNATURE_ADDR	0x20U
 
 /* CRC calculation */
@@ -24,9 +24,6 @@
 /* Status register */
 #define NAND_STATUS_READY	BIT(6)
 
-#define SZ_128M			0x08000000U
-#define SZ_512			0x200U
-
 static struct rawnand_device rawnand_dev;
 
 #pragma weak plat_get_raw_nand_data
diff --git a/include/plat/common/common_def.h b/include/plat/common/common_def.h
index 632f122..1d3ac15 100644
--- a/include/plat/common/common_def.h
+++ b/include/plat/common/common_def.h
@@ -1,17 +1,48 @@
 /*
- * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2022, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
 #ifndef COMMON_DEF_H
 #define COMMON_DEF_H
 
-#include <platform_def.h>
-
 #include <common/bl_common.h>
 #include <lib/utils_def.h>
 #include <lib/xlat_tables/xlat_tables_defs.h>
 
+#include <platform_def.h>
+
+#define SZ_32				U(0x00000020)
+#define SZ_64				U(0x00000040)
+#define SZ_128				U(0x00000080)
+#define SZ_256				U(0x00000100)
+#define SZ_512				U(0x00000200)
+
+#define SZ_1K				U(0x00000400)
+#define SZ_2K				U(0x00000800)
+#define SZ_4K				U(0x00001000)
+#define SZ_8K				U(0x00002000)
+#define SZ_16K				U(0x00004000)
+#define SZ_32K				U(0x00008000)
+#define SZ_64K				U(0x00010000)
+#define SZ_128K				U(0x00020000)
+#define SZ_256K				U(0x00040000)
+#define SZ_512K				U(0x00080000)
+
+#define SZ_1M				U(0x00100000)
+#define SZ_2M				U(0x00200000)
+#define SZ_4M				U(0x00400000)
+#define SZ_8M				U(0x00800000)
+#define SZ_16M				U(0x01000000)
+#define SZ_32M				U(0x02000000)
+#define SZ_64M				U(0x04000000)
+#define SZ_128M				U(0x08000000)
+#define SZ_256M				U(0x10000000)
+#define SZ_512M				U(0x20000000)
+
+#define SZ_1G				U(0x40000000)
+#define SZ_2G				U(0x80000000)
+
 /******************************************************************************
  * Required platform porting definitions that are expected to be common to
  * all platforms
diff --git a/plat/st/stm32mp1/stm32mp1_boot_device.c b/plat/st/stm32mp1/stm32mp1_boot_device.c
index 714ab80..27dbf4e 100644
--- a/plat/st/stm32mp1/stm32mp1_boot_device.c
+++ b/plat/st/stm32mp1/stm32mp1_boot_device.c
@@ -14,9 +14,6 @@
 #include <lib/utils.h>
 #include <plat/common/platform.h>
 
-#define SZ_512		0x200U
-#define SZ_64M		0x4000000U
-
 #if STM32MP_RAW_NAND || STM32MP_SPI_NAND
 static int get_data_from_otp(struct nand_device *nand_dev, bool is_slc)
 {