diff --git a/plat/st/common/include/stm32mp_common.h b/plat/st/common/include/stm32mp_common.h
index 4f85679..27ddab0 100644
--- a/plat/st/common/include/stm32mp_common.h
+++ b/plat/st/common/include/stm32mp_common.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018-2019, STMicroelectronics - All Rights Reserved
+ * Copyright (C) 2018-2020, STMicroelectronics - All Rights Reserved
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -87,4 +87,8 @@
  */
 int stm32mp_check_header(boot_api_image_header_t *header, uintptr_t buffer);
 
+/* Functions to map DDR in MMU with non-cacheable attribute, and unmap it */
+int stm32mp_map_ddr_non_cacheable(void);
+int stm32mp_unmap_ddr(void);
+
 #endif /* STM32MP_COMMON_H */
diff --git a/plat/st/common/stm32mp_common.c b/plat/st/common/stm32mp_common.c
index afa87f4..9af1564 100644
--- a/plat/st/common/stm32mp_common.c
+++ b/plat/st/common/stm32mp_common.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -12,6 +12,7 @@
 #include <arch_helpers.h>
 #include <common/debug.h>
 #include <drivers/st/stm32mp_clkfunc.h>
+#include <lib/xlat_tables/xlat_tables_v2.h>
 #include <plat/common/platform.h>
 
 uintptr_t plat_get_ns_image_entrypoint(void)
@@ -151,3 +152,16 @@
 
 	return 0;
 }
+
+int stm32mp_map_ddr_non_cacheable(void)
+{
+	return  mmap_add_dynamic_region(STM32MP_DDR_BASE, STM32MP_DDR_BASE,
+					STM32MP_DDR_MAX_SIZE,
+					MT_NON_CACHEABLE | MT_RW | MT_NS);
+}
+
+int stm32mp_unmap_ddr(void)
+{
+	return  mmap_remove_dynamic_region(STM32MP_DDR_BASE,
+					   STM32MP_DDR_MAX_SIZE);
+}