diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py
index 5e4055a..5037ac5 100644
--- a/tools/releasetools/common.py
+++ b/tools/releasetools/common.py
@@ -196,7 +196,7 @@
   for k, v in sorted(d.items()):
     print "%-25s = (%s) %s" % (k, type(v).__name__, v)
 
-def BuildBootableImage(sourcedir, fs_config_file):
+def BuildBootableImage(sourcedir, fs_config_file, info_dict=None):
   """Take a kernel, cmdline, and ramdisk directory from the input (in
   'sourcedir'), and turn them into a boot image.  Return the image
   data, or None if sourcedir does not appear to contains files for
@@ -206,6 +206,9 @@
       not os.access(os.path.join(sourcedir, "kernel"), os.F_OK)):
     return None
 
+  if info_dict is None:
+    info_dict = OPTIONS.info_dict
+
   ramdisk_img = tempfile.NamedTemporaryFile()
   img = tempfile.NamedTemporaryFile()
 
@@ -239,6 +242,10 @@
     cmd.append("--pagesize")
     cmd.append(open(fn).read().rstrip("\n"))
 
+  args = info_dict.get("mkbootimg_args", None)
+  if args and args.strip():
+    cmd.extend(args.split())
+
   cmd.extend(["--ramdisk", ramdisk_img.name,
               "--output", img.name])
 
@@ -256,7 +263,8 @@
   return data
 
 
-def GetBootableImage(name, prebuilt_name, unpack_dir, tree_subdir):
+def GetBootableImage(name, prebuilt_name, unpack_dir, tree_subdir,
+                     info_dict=None):
   """Return a File object (with name 'name') with the desired bootable
   image.  Look for it in 'unpack_dir'/BOOTABLE_IMAGES under the name
   'prebuilt_name', otherwise construct it from the source files in
@@ -270,7 +278,8 @@
     print "building image from target_files %s..." % (tree_subdir,)
     fs_config = "META/" + tree_subdir.lower() + "_filesystem_config.txt"
     return File(name, BuildBootableImage(os.path.join(unpack_dir, tree_subdir),
-                                         os.path.join(unpack_dir, fs_config)))
+                                         os.path.join(unpack_dir, fs_config),
+                                         info_dict))
 
 
 def UnzipTemp(filename, pattern=None):
diff --git a/tools/releasetools/ota_from_target_files b/tools/releasetools/ota_from_target_files
index 3dcfbee..b8fe68c 100755
--- a/tools/releasetools/ota_from_target_files
+++ b/tools/releasetools/ota_from_target_files
@@ -531,13 +531,15 @@
   script.AssertSomeFingerprint(source_fp, target_fp)
 
   source_boot = common.GetBootableImage(
-      "/tmp/boot.img", "boot.img", OPTIONS.source_tmp, "BOOT")
+      "/tmp/boot.img", "boot.img", OPTIONS.source_tmp, "BOOT",
+      OPTIONS.source_info_dict)
   target_boot = common.GetBootableImage(
       "/tmp/boot.img", "boot.img", OPTIONS.target_tmp, "BOOT")
   updating_boot = (source_boot.data != target_boot.data)
 
   source_recovery = common.GetBootableImage(
-      "/tmp/recovery.img", "recovery.img", OPTIONS.source_tmp, "RECOVERY")
+      "/tmp/recovery.img", "recovery.img", OPTIONS.source_tmp, "RECOVERY",
+      OPTIONS.source_info_dict)
   target_recovery = common.GetBootableImage(
       "/tmp/recovery.img", "recovery.img", OPTIONS.target_tmp, "RECOVERY")
   updating_recovery = (source_recovery.data != target_recovery.data)