diff --git a/docs/user-guide.md b/docs/user-guide.md
index 41a272fa3..c9312f2c6 100644
--- a/docs/user-guide.md
+++ b/docs/user-guide.md
@@ -465,12 +465,13 @@ map is explained in the [Firmware Design].
     match the frame used by the Non-Secure image (normally the Linux kernel).
     Default is true (access to the frame is allowed).
 
-*   `ARM_BOARD_OPTIMISE_MMAP`: Boolean option to enable or disable optimisation
-    of page table and MMU related macros `PLAT_ARM_MMAP_ENTRIES` and
-    `MAX_XLAT_TABLES`. By default this flag is 0, which means it uses the
-    default unoptimised values for these macros. ARM development platforms
-    that wish to optimise memory usage for page tables need to set this flag to 1
-    and must override the related macros.
+*   `ARM_BOARD_OPTIMISE_MEM`: Boolean option to enable or disable optimisation
+    of the memory reserved for each image. This affects the maximum size of each
+    BL image as well as the number of allocated memory regions and translation
+    tables. By default this flag is 0, which means it uses the default
+    unoptimised values for these macros. ARM development platforms that wish to
+    optimise memory usage need to set this flag to 1 and must override the
+    related macros.
 
 *   'ARM_BL31_IN_DRAM': Boolean option to select loading of BL31 in TZC secured
     DRAM. By default, BL31 is in the secure SRAM. Set this flag to 1 to load
diff --git a/include/plat/arm/board/common/board_arm_def.h b/include/plat/arm/board/common/board_arm_def.h
index d70fbb466..ad82923e6 100644
--- a/include/plat/arm/board/common/board_arm_def.h
+++ b/include/plat/arm/board/common/board_arm_def.h
@@ -61,10 +61,10 @@
 
 /*
  * The constants below are not optimised for memory usage. Platforms that wish
- * to optimise these constants should set `ARM_BOARD_OPTIMISE_MMAP` to 1 and
+ * to optimise these constants should set `ARM_BOARD_OPTIMISE_MEM` to 1 and
  * provide there own values.
  */
-#if !ARM_BOARD_OPTIMISE_MMAP
+#if !ARM_BOARD_OPTIMISE_MEM
 /*
  * PLAT_ARM_MMAP_ENTRIES depends on the number of entries in the
  * plat_arm_mmap array defined for each BL stage.
@@ -81,7 +81,29 @@
 # define MAX_XLAT_TABLES		5
 #endif
 
-#endif /* ARM_BOARD_OPTIMISE_MMAP */
+/*
+ * PLAT_ARM_MAX_BL1_RW_SIZE is calculated using the current BL1 RW debug size
+ * plus a little space for growth.
+ */
+#define PLAT_ARM_MAX_BL1_RW_SIZE	0xA000
+
+/*
+ * PLAT_ARM_MAX_BL2_SIZE is calculated using the current BL2 debug size plus a
+ * little space for growth.
+ */
+#if TRUSTED_BOARD_BOOT
+# define PLAT_ARM_MAX_BL2_SIZE		0x1D000
+#else
+# define PLAT_ARM_MAX_BL2_SIZE		0xF000
+#endif
+
+/*
+ * PLAT_ARM_MAX_BL31_SIZE is calculated using the current BL31 debug size plus a
+ * little space for growth.
+ */
+#define PLAT_ARM_MAX_BL31_SIZE		0x1D000
+
+#endif /* ARM_BOARD_OPTIMISE_MEM */
 
 #define MAX_IO_DEVICES			3
 #define MAX_IO_HANDLES			4
diff --git a/plat/arm/board/common/board_common.mk b/plat/arm/board/common/board_common.mk
index 6ddc0c928..a5636d5e8 100644
--- a/plat/arm/board/common/board_common.mk
+++ b/plat/arm/board/common/board_common.mk
@@ -61,8 +61,8 @@ ifneq (${TRUSTED_BOARD_BOOT},0)
 endif
 
 # This flag controls whether memory usage needs to be optimised
-ARM_BOARD_OPTIMISE_MMAP	?=	0
+ARM_BOARD_OPTIMISE_MEM	?=	0
 
 # Process flags
-$(eval $(call assert_boolean,ARM_BOARD_OPTIMISE_MMAP))
-$(eval $(call add_define,ARM_BOARD_OPTIMISE_MMAP))
+$(eval $(call assert_boolean,ARM_BOARD_OPTIMISE_MEM))
+$(eval $(call add_define,ARM_BOARD_OPTIMISE_MEM))
diff --git a/plat/arm/board/fvp/include/platform_def.h b/plat/arm/board/fvp/include/platform_def.h
index 1e906d82b..d0898adcc 100644
--- a/plat/arm/board/fvp/include/platform_def.h
+++ b/plat/arm/board/fvp/include/platform_def.h
@@ -146,26 +146,4 @@
 
 #define PLAT_ARM_G0_IRQS		ARM_G0_IRQS
 
-/*
- * PLAT_ARM_MAX_BL1_RW_SIZE is calculated using the current BL1 RW debug size
- * plus a little space for growth.
- */
-#define PLAT_ARM_MAX_BL1_RW_SIZE	0xA000
-
-/*
- * PLAT_ARM_MAX_BL2_SIZE is calculated using the current BL2 debug size plus a
- * little space for growth.
- */
-#if TRUSTED_BOARD_BOOT
-# define PLAT_ARM_MAX_BL2_SIZE		0x1D000
-#else
-# define PLAT_ARM_MAX_BL2_SIZE		0xC000
-#endif
-
-/*
- * PLAT_ARM_MAX_BL31_SIZE is calculated using the current BL31 debug size plus a
- * little space for growth.
- */
-#define PLAT_ARM_MAX_BL31_SIZE		0x1D000
-
 #endif /* __PLATFORM_DEF_H__ */
diff --git a/plat/arm/board/juno/include/platform_def.h b/plat/arm/board/juno/include/platform_def.h
index a2cf0368d..c53e938fd 100644
--- a/plat/arm/board/juno/include/platform_def.h
+++ b/plat/arm/board/juno/include/platform_def.h
@@ -74,10 +74,10 @@
 #endif /* TRUSTED_BOARD_BOOT */
 
 /*
- * If ARM_BOARD_OPTIMISE_MMAP=0 then Juno uses the default, unoptimised values
+ * If ARM_BOARD_OPTIMISE_MEM=0 then Juno uses the default, unoptimised values
  * defined for ARM development platforms.
  */
-#if ARM_BOARD_OPTIMISE_MMAP
+#if ARM_BOARD_OPTIMISE_MEM
 /*
  * PLAT_ARM_MMAP_ENTRIES depends on the number of entries in the
  * plat_arm_mmap array defined for each BL stage.
@@ -107,7 +107,33 @@
 # define MAX_XLAT_TABLES		3
 #endif
 
-#endif /* ARM_BOARD_OPTIMISE_MMAP */
+/*
+ * PLAT_ARM_MAX_BL1_RW_SIZE is calculated using the current BL1 RW debug size
+ * plus a little space for growth.
+ */
+#if TRUSTED_BOARD_BOOT
+# define PLAT_ARM_MAX_BL1_RW_SIZE	0x9000
+#else
+# define PLAT_ARM_MAX_BL1_RW_SIZE	0x6000
+#endif
+
+/*
+ * PLAT_ARM_MAX_BL2_SIZE is calculated using the current BL2 debug size plus a
+ * little space for growth.
+ */
+#if TRUSTED_BOARD_BOOT
+# define PLAT_ARM_MAX_BL2_SIZE		0x1D000
+#else
+# define PLAT_ARM_MAX_BL2_SIZE		0xC000
+#endif
+
+/*
+ * PLAT_ARM_MAX_BL31_SIZE is calculated using the current BL31 debug size plus a
+ * little space for growth.
+ */
+#define PLAT_ARM_MAX_BL31_SIZE		0x1D000
+
+#endif /* ARM_BOARD_OPTIMISE_MEM */
 
 /* CCI related constants */
 #define PLAT_ARM_CCI_BASE		0x2c090000
@@ -183,30 +209,4 @@
 /* CSS SoC NIC-400 Global Programmers View (GPV) */
 #define PLAT_SOC_CSS_NIC400_BASE	0x2a000000
 
-/*
- * PLAT_ARM_MAX_BL1_RW_SIZE is calculated using the current BL1 RW debug size
- * plus a little space for growth.
- */
-#if TRUSTED_BOARD_BOOT
-# define PLAT_ARM_MAX_BL1_RW_SIZE	0x9000
-#else
-# define PLAT_ARM_MAX_BL1_RW_SIZE	0x6000
-#endif
-
-/*
- * PLAT_ARM_MAX_BL2_SIZE is calculated using the current BL2 debug size plus a
- * little space for growth.
- */
-#if TRUSTED_BOARD_BOOT
-# define PLAT_ARM_MAX_BL2_SIZE		0x1D000
-#else
-# define PLAT_ARM_MAX_BL2_SIZE		0xC000
-#endif
-
-/*
- * PLAT_ARM_MAX_BL31_SIZE is calculated using the current BL31 debug size plus a
- * little space for growth.
- */
-#define PLAT_ARM_MAX_BL31_SIZE		0x1D000
-
 #endif /* __PLATFORM_DEF_H__ */
diff --git a/plat/arm/board/juno/platform.mk b/plat/arm/board/juno/platform.mk
index 4fda4ca10..c1cfffc44 100644
--- a/plat/arm/board/juno/platform.mk
+++ b/plat/arm/board/juno/platform.mk
@@ -79,7 +79,7 @@ SKIP_A57_L1_FLUSH_PWR_DWN	:=	 1
 ENABLE_PLAT_COMPAT		:= 	0
 
 # Enable memory map related constants optimisation
-ARM_BOARD_OPTIMISE_MMAP		:=	1
+ARM_BOARD_OPTIMISE_MEM		:=	1
 
 include plat/arm/board/common/board_css.mk
 include plat/arm/common/arm_common.mk