diff --git a/plat/st/stm32mp1/platform.mk b/plat/st/stm32mp1/platform.mk
index b425fa5..7203de8 100644
--- a/plat/st/stm32mp1/platform.mk
+++ b/plat/st/stm32mp1/platform.mk
@@ -357,6 +357,9 @@
 endif
 
 ifeq (${STM32MP_SPI_NOR},1)
+ifneq (${STM32MP_FORCE_MTD_START_OFFSET},)
+$(eval $(call add_define_val,STM32MP_NOR_FIP_OFFSET,${STM32MP_FORCE_MTD_START_OFFSET}))
+endif
 BL2_SOURCES		+=	drivers/mtd/nor/spi_nor.c
 endif
 
@@ -366,6 +369,9 @@
 endif
 
 ifneq ($(filter 1,${STM32MP_RAW_NAND} ${STM32MP_SPI_NAND}),)
+ifneq (${STM32MP_FORCE_MTD_START_OFFSET},)
+$(eval $(call add_define_val,STM32MP_NAND_FIP_OFFSET,${STM32MP_FORCE_MTD_START_OFFSET}))
+endif
 BL2_SOURCES		+=	drivers/mtd/nand/core.c
 endif
 
diff --git a/plat/st/stm32mp1/stm32mp1_fip_def.h b/plat/st/stm32mp1/stm32mp1_fip_def.h
index 82e53db..5652597 100644
--- a/plat/st/stm32mp1/stm32mp1_fip_def.h
+++ b/plat/st/stm32mp1/stm32mp1_fip_def.h
@@ -106,7 +106,11 @@
  * STM32MP1 RAW partition offset for devices without GPT
  ******************************************************************************/
 #define STM32MP_EMMC_BOOT_FIP_OFFSET	U(0x00040000)
+#ifndef STM32MP_NOR_FIP_OFFSET
 #define STM32MP_NOR_FIP_OFFSET		U(0x00080000)
+#endif
+#ifndef STM32MP_NAND_FIP_OFFSET
 #define STM32MP_NAND_FIP_OFFSET		U(0x00200000)
+#endif
 
 #endif /* STM32MP1_FIP_DEF_H */