diff --git a/include/asm-generic/global_data.h b/include/asm-generic/global_data.h
index b6f707e97e..998beb0176 100644
--- a/include/asm-generic/global_data.h
+++ b/include/asm-generic/global_data.h
@@ -147,7 +147,7 @@ struct global_data {
 	/**
 	 * @ram_top: top address of RAM used by U-Boot
 	 */
-	unsigned long ram_top;
+	phys_addr_t ram_top;
 	/**
 	 * @relocaddr: start address of U-Boot in RAM
 	 *