diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c
index 2439c36..0855907 100644
--- a/arch/arm/lib/bootm.c
+++ b/arch/arm/lib/bootm.c
@@ -135,7 +135,7 @@
 		 * relocate itself before decompression.
 		 */
 		load_address = mem_start + PAGE_ALIGN(
-		               uimage_get_size(data->os, data->os_num) * 4);
+		               bootm_get_os_size(data) * 4);
 		if (bootm_verbose(data))
 			printf("no OS load address, defaulting to 0x%08lx\n",
 				load_address);
diff --git a/common/bootm.c b/common/bootm.c
index affab24..a38d7e0 100644
--- a/common/bootm.c
+++ b/common/bootm.c
@@ -19,6 +19,7 @@
 #include <libfile.h>
 #include <globalvar.h>
 #include <init.h>
+#include <linux/stat.h>
 
 static LIST_HEAD(handler_list);
 
@@ -185,6 +186,24 @@
 	return 0;
 }
 
+int bootm_get_os_size(struct image_data *data)
+{
+	int ret;
+
+	if (data->os)
+		return uimage_get_size(data->os, data->os_num);
+
+	if (data->os_file) {
+		struct stat s;
+		ret = stat(data->os_file, &s);
+		if (ret)
+			return ret;
+		return s.st_size;
+	}
+
+	return -EINVAL;
+}
+
 static int bootm_open_os_uimage(struct image_data *data)
 {
 	int ret;
diff --git a/include/boot.h b/include/boot.h
index bdd5477..b172c05 100644
--- a/include/boot.h
+++ b/include/boot.h
@@ -112,6 +112,7 @@
 int bootm_load_os(struct image_data *data, unsigned long load_address);
 int bootm_load_initrd(struct image_data *data, unsigned long load_address);
 int bootm_load_devicetree(struct image_data *data, unsigned long load_address);
+int bootm_get_os_size(struct image_data *data);
 
 #define UIMAGE_SOME_ADDRESS (UIMAGE_INVALID_ADDRESS - 1)