diff --git a/bl1/bl1_main.c b/bl1/bl1_main.c
index 6fe551188..1dfdc459b 100644
--- a/bl1/bl1_main.c
+++ b/bl1/bl1_main.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2023, Arm Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2024, Arm Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -38,27 +38,6 @@ uint64_t bl1_apiakey[2];
 		BL_TOTAL_IDS, PMF_DUMP_ENABLE)
 #endif
 
-/*******************************************************************************
- * Helper utility to calculate the BL2 memory layout taking into consideration
- * the BL1 RW data assuming that it is at the top of the memory layout.
- ******************************************************************************/
-void bl1_calc_bl2_mem_layout(const meminfo_t *bl1_mem_layout,
-			meminfo_t *bl2_mem_layout)
-{
-	assert(bl1_mem_layout != NULL);
-	assert(bl2_mem_layout != NULL);
-
-	/*
-	 * Remove BL1 RW data from the scope of memory visible to BL2.
-	 * This is assuming BL1 RW data is at the top of bl1_mem_layout.
-	 */
-	assert(BL1_RW_BASE > bl1_mem_layout->total_base);
-	bl2_mem_layout->total_base = bl1_mem_layout->total_base;
-	bl2_mem_layout->total_size = BL1_RW_BASE - bl1_mem_layout->total_base;
-
-	flush_dcache_range((uintptr_t)bl2_mem_layout, sizeof(meminfo_t));
-}
-
 /*******************************************************************************
  * Setup function for BL1.
  ******************************************************************************/
diff --git a/docs/porting-guide.rst b/docs/porting-guide.rst
index 7c66d1118..5d9840aab 100644
--- a/docs/porting-guide.rst
+++ b/docs/porting-guide.rst
@@ -1712,6 +1712,18 @@ This function can be used by the platforms to update/use image information
 corresponding to ``image_id``. This function is invoked in BL1, both in cold
 boot and FWU code path, before loading the image.
 
+Function : bl1_plat_calc_bl2_layout() [optional]
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+::
+
+    Argument : const meminfo_t *bl1_mem_layout, meminfo_t *bl2_mem_layout
+    Return   : void
+
+This utility function calculates the memory layout of BL2, representing it in a
+`meminfo_t` structure. The default implementation derives this layout from the
+positioning of BL1’s RW data at the top of the memory layout.
+
 Function : bl1_plat_handle_post_image_load() [optional]
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
diff --git a/include/bl1/bl1.h b/include/bl1/bl1.h
index 7cd7e727c..3ab88de96 100644
--- a/include/bl1/bl1.h
+++ b/include/bl1/bl1.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2024, Arm Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -94,9 +94,5 @@ CASSERT(FWU_NUM_SMC_CALLS ==
 		(FWU_SMC_FID_END - FWU_SMC_FID_START + 1),
 		assert_FWU_NUM_SMC_CALLS_mismatch);
 
-/* Utility functions */
-void bl1_calc_bl2_mem_layout(const meminfo_t *bl1_mem_layout,
-			meminfo_t *bl2_mem_layout);
-
 #endif /* __ASSEMBLER__ */
 #endif /* BL1_H */
diff --git a/include/plat/common/platform.h b/include/plat/common/platform.h
index 4fe362005..2af49a93e 100644
--- a/include/plat/common/platform.h
+++ b/include/plat/common/platform.h
@@ -243,7 +243,11 @@ __dead2 void bl1_plat_fwu_done(void *client_cookie, void *reserved);
 int bl1_plat_handle_pre_image_load(unsigned int image_id);
 int bl1_plat_handle_post_image_load(unsigned int image_id);
 
-#if (MEASURED_BOOT || DICE_PROTECTION_ENVIRONMENT)
+/* Utility functions */
+void bl1_plat_calc_bl2_layout(const meminfo_t *bl1_mem_layout,
+			      meminfo_t *bl2_mem_layout);
+
+#if MEASURED_BOOT
 void bl1_plat_mboot_init(void);
 void bl1_plat_mboot_finish(void);
 #else
diff --git a/plat/arm/board/fvp_r/fvp_r_bl1_main.c b/plat/arm/board/fvp_r/fvp_r_bl1_main.c
index 252fc31fb..29495cfcb 100644
--- a/plat/arm/board/fvp_r/fvp_r_bl1_main.c
+++ b/plat/arm/board/fvp_r/fvp_r_bl1_main.c
@@ -91,27 +91,6 @@ void bl1_load_bl33(void)
 	NOTICE("BL1: Booting BL33\n");
 }
 
-/*******************************************************************************
- * Helper utility to calculate the BL2 memory layout taking into consideration
- * the BL1 RW data assuming that it is at the top of the memory layout.
- ******************************************************************************/
-void bl1_calc_bl2_mem_layout(const meminfo_t *bl1_mem_layout,
-			meminfo_t *bl2_mem_layout)
-{
-	assert(bl1_mem_layout != NULL);
-	assert(bl2_mem_layout != NULL);
-
-	/*
-	 * Remove BL1 RW data from the scope of memory visible to BL2.
-	 * This is assuming BL1 RW data is at the top of bl1_mem_layout.
-	 */
-	assert(bl1_mem_layout->total_base < BL1_RW_BASE);
-	bl2_mem_layout->total_base = bl1_mem_layout->total_base;
-	bl2_mem_layout->total_size = BL1_RW_BASE - bl1_mem_layout->total_base;
-
-	flush_dcache_range((uintptr_t)bl2_mem_layout, sizeof(meminfo_t));
-}
-
 /*******************************************************************************
  * This function prepares for entry to BL33
  ******************************************************************************/
diff --git a/plat/arm/board/fvp_r/fvp_r_bl1_setup.c b/plat/arm/board/fvp_r/fvp_r_bl1_setup.c
index 6a7c0c808..dcf5e0465 100644
--- a/plat/arm/board/fvp_r/fvp_r_bl1_setup.c
+++ b/plat/arm/board/fvp_r/fvp_r_bl1_setup.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2021-2024, Arm Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -235,7 +235,7 @@ int bl1_plat_handle_post_image_load(unsigned int image_id)
 	 */
 	bl33_secram_layout = (meminfo_t *) bl1_secram_layout->total_base;
 
-	bl1_calc_bl2_mem_layout(bl1_secram_layout, bl33_secram_layout);
+	bl1_plat_calc_bl2_layout(bl1_secram_layout, bl33_secram_layout);
 
 	ep_info->args.arg1 = (uintptr_t)bl33_secram_layout;
 
diff --git a/plat/common/plat_bl1_common.c b/plat/common/plat_bl1_common.c
index bcf9f8956..ff0e0828c 100644
--- a/plat/common/plat_bl1_common.c
+++ b/plat/common/plat_bl1_common.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2021, Arm Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2024, Arm Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -80,10 +80,8 @@ int bl1_plat_mem_check(uintptr_t mem_base, unsigned int mem_size,
  */
 int bl1_plat_handle_post_image_load(unsigned int image_id)
 {
-	meminfo_t *bl2_secram_layout;
-	meminfo_t *bl1_secram_layout;
+	meminfo_t *bl1_tzram_layout;
 	image_desc_t *image_desc;
-	entry_point_info_t *ep_info;
 
 	if (image_id != BL2_IMAGE_ID)
 		return 0;
@@ -92,26 +90,41 @@ int bl1_plat_handle_post_image_load(unsigned int image_id)
 	image_desc = bl1_plat_get_image_desc(BL2_IMAGE_ID);
 	assert(image_desc != NULL);
 
-	/* Get the entry point info */
-	ep_info = &image_desc->ep_info;
-
 	/* Find out how much free trusted ram remains after BL1 load */
-	bl1_secram_layout = bl1_plat_sec_mem_layout();
+	bl1_tzram_layout = bl1_plat_sec_mem_layout();
 
 	/*
-	 * Create a new layout of memory for BL2 as seen by BL1 i.e.
-	 * tell it the amount of total and free memory available.
-	 * This layout is created at the first free address visible
-	 * to BL2. BL2 will read the memory layout before using its
-	 * memory for other purposes.
+	 * Convey this information to BL2 by storing the layout at the first free
+	 * address visible to BL2.
 	 */
-	bl2_secram_layout = (meminfo_t *) bl1_secram_layout->total_base;
+	bl1_plat_calc_bl2_layout(bl1_tzram_layout,
+				 (meminfo_t *)bl1_tzram_layout->total_base);
 
-	bl1_calc_bl2_mem_layout(bl1_secram_layout, bl2_secram_layout);
-
-	ep_info->args.arg1 = (uintptr_t)bl2_secram_layout;
+	image_desc->ep_info.args.arg1 = (uintptr_t)bl1_tzram_layout->total_base;
 
 	VERBOSE("BL1: BL2 memory layout address = %p\n",
-		(void *) bl2_secram_layout);
+		(void *)image_desc->ep_info.args.arg1);
+
 	return 0;
 }
+
+/*******************************************************************************
+ * Helper utility to calculate the BL2 memory layout taking into consideration
+ * the BL1 RW data assuming that it is at the top of the memory layout.
+ ******************************************************************************/
+void bl1_plat_calc_bl2_layout(const meminfo_t *bl1_mem_layout,
+			      meminfo_t *bl2_mem_layout)
+{
+	assert(bl1_mem_layout != NULL);
+	assert(bl2_mem_layout != NULL);
+
+	/*
+	 * Remove BL1 RW data from the scope of memory visible to BL2.
+	 * This is assuming BL1 RW data is at the top of bl1_mem_layout.
+	 */
+	assert(BL1_RW_BASE > bl1_mem_layout->total_base);
+	bl2_mem_layout->total_base = bl1_mem_layout->total_base;
+	bl2_mem_layout->total_size = BL1_RW_BASE - bl1_mem_layout->total_base;
+
+	flush_dcache_range((uintptr_t)bl2_mem_layout, sizeof(meminfo_t));
+}