diff --git a/plat/st/stm32mp1/stm32mp1_def.h b/plat/st/stm32mp1/stm32mp1_def.h
index 801b9474a..1d5580752 100644
--- a/plat/st/stm32mp1/stm32mp1_def.h
+++ b/plat/st/stm32mp1/stm32mp1_def.h
@@ -69,8 +69,20 @@
 #define STM32MP_ROM_SIZE		U(0x00020000)
 #define STM32MP_ROM_SIZE_2MB_ALIGNED	U(0x00200000)
 
+#if STM32MP13
+#define STM32MP_SYSRAM_BASE		U(0x2FFE0000)
+#define STM32MP_SYSRAM_SIZE		U(0x00020000)
+#define SRAM1_BASE			U(0x30000000)
+#define SRAM1_SIZE			U(0x00004000)
+#define SRAM2_BASE			U(0x30004000)
+#define SRAM2_SIZE			U(0x00002000)
+#define SRAM3_BASE			U(0x30006000)
+#define SRAM3_SIZE			U(0x00002000)
+#endif /* STM32MP13 */
+#if STM32MP15
 #define STM32MP_SYSRAM_BASE		U(0x2FFC0000)
 #define STM32MP_SYSRAM_SIZE		U(0x00040000)
+#endif /* STM32MP15 */
 
 #define STM32MP_NS_SYSRAM_SIZE		PAGE_SIZE
 #define STM32MP_NS_SYSRAM_BASE		(STM32MP_SYSRAM_BASE + \
diff --git a/plat/st/stm32mp1/stm32mp1_fip_def.h b/plat/st/stm32mp1/stm32mp1_fip_def.h
index 41972e4f8..7a277fdcb 100644
--- a/plat/st/stm32mp1/stm32mp1_fip_def.h
+++ b/plat/st/stm32mp1/stm32mp1_fip_def.h
@@ -10,29 +10,51 @@
 #define STM32MP_DDR_S_SIZE		U(0x01E00000)	/* 30 MB */
 #define STM32MP_DDR_SHMEM_SIZE		U(0x00200000)	/* 2 MB */
 
+#if STM32MP13
+#define STM32MP_BL2_RO_SIZE		U(0x00015000)	/* 84 KB */
+#define STM32MP_BL2_SIZE		U(0x00017000)	/* 92 KB for BL2 */
+#define STM32MP_BL2_DTB_SIZE		U(0x00004000)	/* 16 KB for DTB */
+#endif /* STM32MP13 */
+#if STM32MP15
 #define STM32MP_BL2_RO_SIZE		U(0x00011000)	/* 68 KB */
 #define STM32MP_BL2_SIZE		U(0x00016000)	/* 88 KB for BL2 */
 #define STM32MP_BL2_DTB_SIZE		U(0x00007000)	/* 28 KB for DTB */
+#endif /* STM32MP15 */
 #define STM32MP_BL32_SIZE		U(0x0001B000)	/* 108 KB for BL32 */
 #define STM32MP_BL32_DTB_SIZE		U(0x00005000)	/* 20 KB for DTB */
 #define STM32MP_FW_CONFIG_MAX_SIZE	PAGE_SIZE	/* 4 KB for FCONF DTB */
 #define STM32MP_HW_CONFIG_MAX_SIZE	U(0x40000)	/* 256 KB for HW config DTB */
 
+#if STM32MP13
+#define STM32MP_BL2_BASE		(STM32MP_BL2_DTB_BASE + \
+					 STM32MP_BL2_DTB_SIZE)
+#endif /* STM32MP13 */
+#if STM32MP15
 #define STM32MP_BL2_BASE		(STM32MP_SEC_SYSRAM_BASE + \
 					 STM32MP_SEC_SYSRAM_SIZE - \
 					 STM32MP_BL2_SIZE)
+#endif /* STM32MP15 */
 
 #define STM32MP_BL2_RO_BASE		STM32MP_BL2_BASE
 
 #define STM32MP_BL2_RW_BASE		(STM32MP_BL2_RO_BASE + \
 					 STM32MP_BL2_RO_SIZE)
 
+#if STM32MP13
+#define STM32MP_BL2_RW_SIZE		(STM32MP_SYSRAM_BASE + \
+					 STM32MP_SYSRAM_SIZE - \
+					 STM32MP_BL2_RW_BASE)
+
+#define STM32MP_BL2_DTB_BASE		STM32MP_SEC_SYSRAM_BASE
+#endif /* STM32MP13 */
+#if STM32MP15
 #define STM32MP_BL2_RW_SIZE		(STM32MP_SEC_SYSRAM_BASE + \
 					 STM32MP_SEC_SYSRAM_SIZE - \
 					 STM32MP_BL2_RW_BASE)
 
 #define STM32MP_BL2_DTB_BASE		(STM32MP_BL2_BASE - \
 					 STM32MP_BL2_DTB_SIZE)
+#endif /* STM32MP15 */
 
 #define STM32MP_BL32_DTB_BASE		STM32MP_SYSRAM_BASE
 
@@ -56,9 +78,14 @@
 					 STM32MP_OPTEE_BASE)
 #endif
 
+#if STM32MP13
+#define STM32MP_FW_CONFIG_BASE		SRAM3_BASE
+#endif /* STM32MP13 */
+#if STM32MP15
 #define STM32MP_FW_CONFIG_BASE		(STM32MP_SYSRAM_BASE + \
 					 STM32MP_SYSRAM_SIZE - \
 					 PAGE_SIZE)
+#endif /* STM32MP15 */
 #define STM32MP_HW_CONFIG_BASE		(STM32MP_BL33_BASE + \
 					STM32MP_BL33_MAX_SIZE)