diff --git a/docs/user-guide.rst b/docs/user-guide.rst
index 47a04a3..2632329 100644
--- a/docs/user-guide.rst
+++ b/docs/user-guide.rst
@@ -707,14 +707,6 @@
    sets the TSP location to DRAM and ignores the ``ARM_TSP_RAM_LOCATION`` build
    flag.
 
--  ``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_CONFIG_CNTACR``: boolean option to unlock access to the ``CNTBase<N>``
    frame registers by setting the ``CNTCTLBase.CNTACR<N>`` register bits. The
    frame number ``<N>`` is defined by ``PLAT_ARM_NSTIMER_FRAME_ID``, which should
diff --git a/include/plat/arm/board/common/board_arm_def.h b/include/plat/arm/board/common/board_arm_def.h
index 9af8f8c..a927208 100644
--- a/include/plat/arm/board/common/board_arm_def.h
+++ b/include/plat/arm/board/common/board_arm_def.h
@@ -8,7 +8,6 @@
 
 #include <v2m_def.h>
 
-
 /*
  * Required platform porting definitions common to all ARM
  * development platforms
@@ -41,90 +40,6 @@
 # define PLATFORM_STACK_SIZE 0x440
 #endif
 
-/*
- * The constants below are not optimised for memory usage. Platforms that wish
- * to optimise these constants should set `ARM_BOARD_OPTIMISE_MEM` to 1 and
- * provide there own values.
- */
-#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.
- *
- * Provide relatively optimised values for the runtime images (BL31 and BL32).
- * Optimisation is less important for the other, transient boot images so a
- * common, maximum value is used across these images.
- *
- * They are also used for the dynamically mapped regions in the images that
- * enable dynamic memory mapping.
- */
-#if defined(IMAGE_BL31)
-# if ENABLE_SPM
-#  define PLAT_ARM_MMAP_ENTRIES		9
-#  define MAX_XLAT_TABLES		7
-#  define PLAT_SP_IMAGE_MMAP_REGIONS	7
-#  define PLAT_SP_IMAGE_MAX_XLAT_TABLES	10
-# else
-#  define PLAT_ARM_MMAP_ENTRIES		8
-#  define MAX_XLAT_TABLES		5
-# endif
-#elif defined(IMAGE_BL32)
-# define PLAT_ARM_MMAP_ENTRIES		8
-# define MAX_XLAT_TABLES		5
-#elif !USE_ROMLIB
-# define PLAT_ARM_MMAP_ENTRIES		11
-# define MAX_XLAT_TABLES		5
-#else
-# define PLAT_ARM_MMAP_ENTRIES		12
-# define MAX_XLAT_TABLES		6
-#endif
-
-/*
- * 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	0xB000
-
-/*
- * PLAT_ARM_MAX_ROMLIB_RW_SIZE is define to use a full page
- */
-
-#if USE_ROMLIB
-#define PLAT_ARM_MAX_ROMLIB_RW_SIZE	0x1000
-#define PLAT_ARM_MAX_ROMLIB_RO_SIZE	0xe000
-#else
-#define PLAT_ARM_MAX_ROMLIB_RW_SIZE	0
-#define PLAT_ARM_MAX_ROMLIB_RO_SIZE	0
-#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		0x11000
-#endif
-
-/*
- * Since BL31 NOBITS overlays BL2 and BL1-RW, PLAT_ARM_MAX_BL31_SIZE is
- * calculated using the current BL31 PROGBITS debug size plus the sizes of
- * BL2 and BL1-RW
- */
-#define PLAT_ARM_MAX_BL31_SIZE		0x3B000
-
-#ifdef AARCH32
-/*
- * Since BL32 NOBITS overlays BL2 and BL1-RW, PLAT_ARM_MAX_BL32_SIZE is
- * calculated using the current SP_MIN PROGBITS debug size plus the sizes of
- * BL2 and BL1-RW
- */
-# define PLAT_ARM_MAX_BL32_SIZE		0x3B000
-#endif
-
-#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 af47c0d..8b46c4b 100644
--- a/plat/arm/board/common/board_common.mk
+++ b/plat/arm/board/common/board_common.mk
@@ -43,10 +43,3 @@
     BL1_SOURCES		+=	plat/arm/board/common/board_arm_trusted_boot.c
     BL2_SOURCES		+=	plat/arm/board/common/board_arm_trusted_boot.c
 endif
-
-# This flag controls whether memory usage needs to be optimised
-ARM_BOARD_OPTIMISE_MEM	?=	0
-
-# Process flags
-$(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 44ab953..e4df227 100644
--- a/plat/arm/board/fvp/include/platform_def.h
+++ b/plat/arm/board/fvp/include/platform_def.h
@@ -64,6 +64,74 @@
  */
 #define PLAT_ARM_NS_IMAGE_OFFSET	(ARM_DRAM1_BASE + U(0x8000000))
 
+/*
+ * PLAT_ARM_MMAP_ENTRIES depends on the number of entries in the
+ * plat_arm_mmap array defined for each BL stage.
+ */
+#if defined(IMAGE_BL31)
+# if ENABLE_SPM
+#  define PLAT_ARM_MMAP_ENTRIES		9
+#  define MAX_XLAT_TABLES		7
+#  define PLAT_SP_IMAGE_MMAP_REGIONS	7
+#  define PLAT_SP_IMAGE_MAX_XLAT_TABLES	10
+# else
+#  define PLAT_ARM_MMAP_ENTRIES		8
+#  define MAX_XLAT_TABLES		5
+# endif
+#elif defined(IMAGE_BL32)
+# define PLAT_ARM_MMAP_ENTRIES		8
+# define MAX_XLAT_TABLES		5
+#elif !USE_ROMLIB
+# define PLAT_ARM_MMAP_ENTRIES		11
+# define MAX_XLAT_TABLES		5
+#else
+# define PLAT_ARM_MMAP_ENTRIES		12
+# define MAX_XLAT_TABLES		6
+#endif
+
+/*
+ * 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	0xB000
+
+/*
+ * PLAT_ARM_MAX_ROMLIB_RW_SIZE is define to use a full page
+ */
+
+#if USE_ROMLIB
+#define PLAT_ARM_MAX_ROMLIB_RW_SIZE	0x1000
+#define PLAT_ARM_MAX_ROMLIB_RO_SIZE	0xe000
+#else
+#define PLAT_ARM_MAX_ROMLIB_RW_SIZE	0
+#define PLAT_ARM_MAX_ROMLIB_RO_SIZE	0
+#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		0x11000
+#endif
+
+/*
+ * Since BL31 NOBITS overlays BL2 and BL1-RW, PLAT_ARM_MAX_BL31_SIZE is
+ * calculated using the current BL31 PROGBITS debug size plus the sizes of
+ * BL2 and BL1-RW
+ */
+#define PLAT_ARM_MAX_BL31_SIZE		0x3B000
+
+#ifdef AARCH32
+/*
+ * Since BL32 NOBITS overlays BL2 and BL1-RW, PLAT_ARM_MAX_BL32_SIZE is
+ * calculated using the current SP_MIN PROGBITS debug size plus the sizes of
+ * BL2 and BL1-RW
+ */
+# define PLAT_ARM_MAX_BL32_SIZE		0x3B000
+#endif
 
 /*
  * PL011 related constants
diff --git a/plat/arm/board/juno/include/platform_def.h b/plat/arm/board/juno/include/platform_def.h
index 3f71d73..d130beb 100644
--- a/plat/arm/board/juno/include/platform_def.h
+++ b/plat/arm/board/juno/include/platform_def.h
@@ -76,11 +76,6 @@
 #endif /* TRUSTED_BOARD_BOOT */
 
 /*
- * If ARM_BOARD_OPTIMISE_MEM=0 then Juno uses the default, unoptimised values
- * defined for ARM development platforms.
- */
-#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.
  */
@@ -173,8 +168,6 @@
  */
 #define PLAT_LOG_LEVEL_ASSERT		40
 
-#endif /* ARM_BOARD_OPTIMISE_MEM */
-
 /* CCI related constants */
 #define PLAT_ARM_CCI_BASE		0x2c090000
 #define PLAT_ARM_CCI_CLUSTER0_SL_IFACE_IX	4
diff --git a/plat/arm/board/juno/platform.mk b/plat/arm/board/juno/platform.mk
index 67fc19a..90fa938 100644
--- a/plat/arm/board/juno/platform.mk
+++ b/plat/arm/board/juno/platform.mk
@@ -115,9 +115,6 @@
 # power down sequence
 SKIP_A57_L1_FLUSH_PWR_DWN	:=	 1
 
-# Enable memory map related constants optimisation
-ARM_BOARD_OPTIMISE_MEM		:=	1
-
 # Do not enable SVE
 ENABLE_SVE_FOR_NS		:=	0
 
diff --git a/plat/arm/css/sgi/include/platform_def.h b/plat/arm/css/sgi/include/platform_def.h
index ce86a75..b87bded 100644
--- a/plat/arm/css/sgi/include/platform_def.h
+++ b/plat/arm/css/sgi/include/platform_def.h
@@ -26,29 +26,65 @@
 					CSS_SGI_MAX_CPUS_PER_CLUSTER * \
 					CSS_SGI_MAX_PE_PER_CPU)
 
-#if ARM_BOARD_OPTIMISE_MEM
-
-#if defined(IMAGE_BL31) || defined(IMAGE_BL32)
-# define PLAT_ARM_MMAP_ENTRIES		6
-# define MAX_XLAT_TABLES		4
-#else
-# define PLAT_ARM_MMAP_ENTRIES		10
+/*
+ * PLAT_ARM_MMAP_ENTRIES depends on the number of entries in the
+ * plat_arm_mmap array defined for each BL stage.
+ */
+#if defined(IMAGE_BL31)
+# if ENABLE_SPM
+#  define PLAT_ARM_MMAP_ENTRIES		9
+#  define MAX_XLAT_TABLES		7
+#  define PLAT_SP_IMAGE_MMAP_REGIONS	7
+#  define PLAT_SP_IMAGE_MAX_XLAT_TABLES	10
+# else
+#  define PLAT_ARM_MMAP_ENTRIES		8
+#  define MAX_XLAT_TABLES		5
+# endif
+#elif defined(IMAGE_BL32)
+# define PLAT_ARM_MMAP_ENTRIES		8
 # define MAX_XLAT_TABLES		5
+#elif !USE_ROMLIB
+# define PLAT_ARM_MMAP_ENTRIES		11
+# define MAX_XLAT_TABLES		5
+#else
+# define PLAT_ARM_MMAP_ENTRIES		12
+# define MAX_XLAT_TABLES		6
 #endif
 
-#if TRUSTED_BOARD_BOOT
-# define PLAT_ARM_MAX_BL1_RW_SIZE	0xA000
+/*
+ * 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	0xB000
+
+/*
+ * PLAT_ARM_MAX_ROMLIB_RW_SIZE is define to use a full page
+ */
+
+#if USE_ROMLIB
+#define PLAT_ARM_MAX_ROMLIB_RW_SIZE	0x1000
+#define PLAT_ARM_MAX_ROMLIB_RO_SIZE	0xe000
 #else
-# define PLAT_ARM_MAX_BL1_RW_SIZE	0x6000
+#define PLAT_ARM_MAX_ROMLIB_RW_SIZE	0
+#define PLAT_ARM_MAX_ROMLIB_RO_SIZE	0
 #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
+# define PLAT_ARM_MAX_BL2_SIZE		0x11000
 #endif
 
-#endif /* ARM_BOARD_OPTIMISE_MEM */
+/*
+ * Since BL31 NOBITS overlays BL2 and BL1-RW, PLAT_ARM_MAX_BL31_SIZE is
+ * calculated using the current BL31 PROGBITS debug size plus the sizes of
+ * BL2 and BL1-RW
+ */
+#define PLAT_ARM_MAX_BL31_SIZE		0x3B000
 
 #define PLAT_ARM_NSTIMER_FRAME_ID	0
 
diff --git a/plat/arm/css/sgm/include/sgm_base_platform_def.h b/plat/arm/css/sgm/include/sgm_base_platform_def.h
index 2498430..7d35bd5 100644
--- a/plat/arm/css/sgm/include/sgm_base_platform_def.h
+++ b/plat/arm/css/sgm/include/sgm_base_platform_def.h
@@ -152,61 +152,39 @@
  */
 
 /*
- * If ARM_BOARD_OPTIMISE_MEM=0 then use the default, unoptimised values
- * defined for ARM development platforms.
- */
-#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.
  */
-#if IMAGE_BL1
-# if TRUSTED_BOARD_BOOT
-#  define PLAT_ARM_MMAP_ENTRIES		7
-# else
-#  define PLAT_ARM_MMAP_ENTRIES		6
-# endif /* TRUSTED_BOARD_BOOT */
-#elif IMAGE_BL2
-#  define PLAT_ARM_MMAP_ENTRIES		8
-#elif IMAGE_BL2U
-#  define PLAT_ARM_MMAP_ENTRIES		4
-#elif IMAGE_BL31
-#  define PLAT_ARM_MMAP_ENTRIES		6
-#elif IMAGE_BL32
-#  define PLAT_ARM_MMAP_ENTRIES		5
+#if defined(IMAGE_BL31)
+# define PLAT_ARM_MMAP_ENTRIES		8
+# define MAX_XLAT_TABLES		5
+#elif defined(IMAGE_BL32)
+# define PLAT_ARM_MMAP_ENTRIES		8
+# define MAX_XLAT_TABLES		5
+#elif !USE_ROMLIB
+# define PLAT_ARM_MMAP_ENTRIES		11
+# define MAX_XLAT_TABLES		5
+#else
+# define PLAT_ARM_MMAP_ENTRIES		12
+# define MAX_XLAT_TABLES		6
 #endif
 
 /*
- * Platform specific page table and MMU setup constants
+ * PLAT_ARM_MAX_BL1_RW_SIZE is calculated using the current BL1 RW debug size
+ * plus a little space for growth.
  */
-#if IMAGE_BL1
-# if TRUSTED_BOARD_BOOT
-#  define MAX_XLAT_TABLES		4
-# else
-#  define MAX_XLAT_TABLES		3
-#endif
-#elif IMAGE_BL2
-#  define MAX_XLAT_TABLES		4
-#elif IMAGE_BL2U
-#  define MAX_XLAT_TABLES		4
-#elif IMAGE_BL31
-#  define MAX_XLAT_TABLES		2
-#elif IMAGE_BL32
-# if ARM_TSP_RAM_LOCATION_ID == ARM_DRAM_ID
-#  define MAX_XLAT_TABLES		3
-# else
-#  define MAX_XLAT_TABLES		2
-# endif
-#endif
+#define PLAT_ARM_MAX_BL1_RW_SIZE	0xB000
 
 /*
- * PLAT_ARM_MAX_BL1_RW_SIZE is calculated using the current BL1 RW debug size
- * plus a little space for growth.
+ * PLAT_ARM_MAX_ROMLIB_RW_SIZE is define to use a full page
  */
-#if TRUSTED_BOARD_BOOT
-# define PLAT_ARM_MAX_BL1_RW_SIZE	0xA000
+
+#if USE_ROMLIB
+#define PLAT_ARM_MAX_ROMLIB_RW_SIZE	0x1000
+#define PLAT_ARM_MAX_ROMLIB_RO_SIZE	0xe000
 #else
-# define PLAT_ARM_MAX_BL1_RW_SIZE	0x7000
+#define PLAT_ARM_MAX_ROMLIB_RW_SIZE	0
+#define PLAT_ARM_MAX_ROMLIB_RO_SIZE	0
 #endif
 
 /*
@@ -216,10 +194,15 @@
 #if TRUSTED_BOARD_BOOT
 # define PLAT_ARM_MAX_BL2_SIZE		0x1D000
 #else
-# define PLAT_ARM_MAX_BL2_SIZE		0xD000
+# define PLAT_ARM_MAX_BL2_SIZE		0x11000
 #endif
 
-#endif /* ARM_BOARD_OPTIMISE_MEM */
+/*
+ * Since BL31 NOBITS overlays BL2 and BL1-RW, PLAT_ARM_MAX_BL31_SIZE is
+ * calculated using the current BL31 PROGBITS debug size plus the sizes of
+ * BL2 and BL1-RW
+ */
+#define PLAT_ARM_MAX_BL31_SIZE		0x3B000
 
 /*******************************************************************************
  * Memprotect definitions