diff --git a/releasetools/common.py b/releasetools/common.py
index 2fb3aa5..f9c0776 100644
--- a/releasetools/common.py
+++ b/releasetools/common.py
@@ -852,6 +852,7 @@ def worker():
 # map recovery.fstab's fs_types to mount/format "partition types"
 PARTITION_TYPES = { "yaffs2": "MTD", "mtd": "MTD", "ext3": "EMMC",
                     "ext4": "EMMC", "emmc": "EMMC", "vfat": "EMMC",
+		    "f2fs": "EMMC","bml": "BML",
 					"auto": "EMMC"}
 
 def GetTypeAndDevice(mount_point, info):
diff --git a/releasetools/edify_generator.py b/releasetools/edify_generator.py
index 537af1c..2a01efc 100644
--- a/releasetools/edify_generator.py
+++ b/releasetools/edify_generator.py
@@ -210,6 +210,11 @@ def WriteRawImage(self, mount_point, fn):
       elif partition_type == "EMMC":
         self.script.append(
             'package_extract_file("%(fn)s", "%(device)s");' % args)
+      elif partition_type == "BML":
+          self.script.append(
+            ('assert(package_extract_file("%(fn)s", "/tmp/%(device)s.img"),\n'
+             '       write_raw_image("/tmp/%(device)s.img", "%(device)s"),\n'
+             '       delete("/tmp/%(device)s.img"));') % args)
       else:
         raise ValueError("don't know how to write \"%s\" partitions" % (p.fs_type,))