diff --git a/include/lib/utils.h b/include/lib/utils.h
index 3d215c3..f367a1f 100644
--- a/include/lib/utils.h
+++ b/include/lib/utils.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -29,6 +29,18 @@
  */
 void clear_mem_regions(mem_region_t *tbl, size_t nregions);
 
+/*
+ * zero_normalmem all the regions defined in region. It dynamically
+ * maps chunks of 'chunk_size' in 'va' virtual address and clears them.
+ * For this reason memory regions must be multiple of chunk_size and
+ * must be aligned to it as well. chunk_size and va can be selected
+ * in a way that they minimize the number of entries used in the
+ * translation tables.
+ */
+void clear_map_dyn_mem_regions(mem_region_t *region,
+			       size_t nregions,
+			       uintptr_t va,
+			       size_t chunk_size);
 
 /*
  * checks that a region (addr + nbytes-1) of memory is totally covered by
diff --git a/include/plat/arm/board/common/board_arm_def.h b/include/plat/arm/board/common/board_arm_def.h
index 12a21fb..845f140 100644
--- a/include/plat/arm/board/common/board_arm_def.h
+++ b/include/plat/arm/board/common/board_arm_def.h
@@ -30,7 +30,11 @@
 #elif defined(IMAGE_BL2U)
 # define PLATFORM_STACK_SIZE 0x200
 #elif defined(IMAGE_BL31)
+#ifdef PLAT_XLAT_TABLES_DYNAMIC
+# define PLATFORM_STACK_SIZE 0x800
+#else
 # define PLATFORM_STACK_SIZE 0x400
+#endif
 #elif defined(IMAGE_BL32)
 # define PLATFORM_STACK_SIZE 0x440
 #endif
@@ -59,11 +63,11 @@
 #  define PLAT_SP_IMAGE_MMAP_REGIONS	7
 #  define PLAT_SP_IMAGE_MAX_XLAT_TABLES	10
 # else
-#  define PLAT_ARM_MMAP_ENTRIES		7
+#  define PLAT_ARM_MMAP_ENTRIES		8
 #  define MAX_XLAT_TABLES		5
 # endif
 #elif defined(IMAGE_BL32)
-# define PLAT_ARM_MMAP_ENTRIES		7
+# define PLAT_ARM_MMAP_ENTRIES		8
 # define MAX_XLAT_TABLES		5
 #else
 # define PLAT_ARM_MMAP_ENTRIES		11
diff --git a/include/plat/arm/common/plat_arm.h b/include/plat/arm/common/plat_arm.h
index f79450c..612a63a 100644
--- a/include/plat/arm/common/plat_arm.h
+++ b/include/plat/arm/common/plat_arm.h
@@ -166,7 +166,8 @@
 void arm_program_trusted_mailbox(uintptr_t address);
 int arm_psci_read_mem_protect(int *enabled);
 int arm_nor_psci_write_mem_protect(int val);
-void arm_nor_psci_do_mem_protect(void);
+void arm_nor_psci_do_static_mem_protect(void);
+void arm_nor_psci_do_dyn_mem_protect(void);
 int arm_psci_mem_protect_chk(uintptr_t base, u_register_t length);
 
 /* Topology utility function */
diff --git a/include/plat/arm/css/common/css_def.h b/include/plat/arm/css/common/css_def.h
index a2c0b4e..deea1bb 100644
--- a/include/plat/arm/css/common/css_def.h
+++ b/include/plat/arm/css/common/css_def.h
@@ -172,7 +172,7 @@
 #endif /* CSS_LOAD_SCP_IMAGES */
 
 /* Load address of Non-Secure Image for CSS platform ports */
-#define PLAT_ARM_NS_IMAGE_OFFSET	0xE0000000
+#define PLAT_ARM_NS_IMAGE_OFFSET	U(0xE0000000)
 
 /* TZC related constants */
 #define PLAT_ARM_TZC_FILTERS		TZC_400_REGION_ATTR_FILTER_BIT_ALL