diff --git a/arch/x86/cpu/broadwell/sdram.c b/arch/x86/cpu/broadwell/sdram.c
index 1295121..f477d51 100644
--- a/arch/x86/cpu/broadwell/sdram.c
+++ b/arch/x86/cpu/broadwell/sdram.c
@@ -25,7 +25,7 @@
 #include <asm/arch/pei_data.h>
 #include <asm/arch/pm.h>
 
-phys_size_t board_get_usable_ram_top(phys_size_t total_size)
+phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
 {
 	return mrc_common_board_get_usable_ram_top(total_size);
 }
diff --git a/arch/x86/cpu/coreboot/sdram.c b/arch/x86/cpu/coreboot/sdram.c
index f4ee4cd..26352df 100644
--- a/arch/x86/cpu/coreboot/sdram.c
+++ b/arch/x86/cpu/coreboot/sdram.c
@@ -27,7 +27,7 @@
  * address, and how far U-Boot is moved by relocation are set in the global
  * data structure.
  */
-phys_size_t board_get_usable_ram_top(phys_size_t total_size)
+phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
 {
 	uintptr_t dest_addr = 0;
 	int i;
diff --git a/arch/x86/cpu/efi/payload.c b/arch/x86/cpu/efi/payload.c
index 19a25dd6..d8920ef 100644
--- a/arch/x86/cpu/efi/payload.c
+++ b/arch/x86/cpu/efi/payload.c
@@ -27,7 +27,7 @@
  * the relocation address, and how far U-Boot is moved by relocation are
  * set in the global data structure.
  */
-phys_size_t board_get_usable_ram_top(phys_size_t total_size)
+phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
 {
 	struct efi_mem_desc *desc, *end;
 	struct efi_entry_memmap *map;
diff --git a/arch/x86/cpu/efi/sdram.c b/arch/x86/cpu/efi/sdram.c
index f3086db..56f3326 100644
--- a/arch/x86/cpu/efi/sdram.c
+++ b/arch/x86/cpu/efi/sdram.c
@@ -11,7 +11,7 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-phys_size_t board_get_usable_ram_top(phys_size_t total_size)
+phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
 {
 	return (ulong)efi_get_ram_base() + gd->ram_size;
 }
diff --git a/arch/x86/cpu/ivybridge/sdram.c b/arch/x86/cpu/ivybridge/sdram.c
index 0718aef..95a826d 100644
--- a/arch/x86/cpu/ivybridge/sdram.c
+++ b/arch/x86/cpu/ivybridge/sdram.c
@@ -46,7 +46,7 @@
 #define CMOS_OFFSET_MRC_SEED_S3		156
 #define CMOS_OFFSET_MRC_SEED_CHK	160
 
-phys_size_t board_get_usable_ram_top(phys_size_t total_size)
+phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
 {
 	return mrc_common_board_get_usable_ram_top(total_size);
 }
diff --git a/arch/x86/cpu/qemu/dram.c b/arch/x86/cpu/qemu/dram.c
index 1a52d1d..d83abf0 100644
--- a/arch/x86/cpu/qemu/dram.c
+++ b/arch/x86/cpu/qemu/dram.c
@@ -72,7 +72,7 @@
  * the relocation address, and how far U-Boot is moved by relocation are
  * set in the global data structure.
  */
-phys_size_t board_get_usable_ram_top(phys_size_t total_size)
+phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
 {
 	return qemu_get_low_memory_size();
 }
diff --git a/arch/x86/cpu/quark/dram.c b/arch/x86/cpu/quark/dram.c
index 8b1ee2d..ad98f3e 100644
--- a/arch/x86/cpu/quark/dram.c
+++ b/arch/x86/cpu/quark/dram.c
@@ -184,7 +184,7 @@
  * the relocation address, and how far U-Boot is moved by relocation are
  * set in the global data structure.
  */
-phys_size_t board_get_usable_ram_top(phys_size_t total_size)
+phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
 {
 	return gd->ram_size;
 }
diff --git a/arch/x86/cpu/slimbootloader/sdram.c b/arch/x86/cpu/slimbootloader/sdram.c
index d748d5c..fbb33b2 100644
--- a/arch/x86/cpu/slimbootloader/sdram.c
+++ b/arch/x86/cpu/slimbootloader/sdram.c
@@ -48,7 +48,7 @@
  * @total_size: The memory size that u-boot occupies
  * Return:    : The top available memory address lower than 4GB
  */
-phys_size_t board_get_usable_ram_top(phys_size_t total_size)
+phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
 {
 	struct sbl_memory_map_info *data;
 	int i;
diff --git a/arch/x86/cpu/tangier/sdram.c b/arch/x86/cpu/tangier/sdram.c
index 8a4b1c5..ee74a1f 100644
--- a/arch/x86/cpu/tangier/sdram.c
+++ b/arch/x86/cpu/tangier/sdram.c
@@ -204,7 +204,7 @@
  * address, and how far U-Boot is moved by relocation are set in the global
  * data structure.
  */
-phys_size_t board_get_usable_ram_top(phys_size_t total_size)
+phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
 {
 	struct sfi_table_simple *sb;
 	struct sfi_mem_entry *mentry;