wic/bootimg-efi: if fixed-size is set then use that for mkdosfs

This is a bit of a compatibility issue more than anything. Some devices
get upset if the FAT file system contains less blocks than the
partition.

The fixed-size argument is currently respected by the partition creation
step but not by the file system creation step. Let's make it so the file
system respects this value as well.

Signed-off-by: Randolph Sapp <rs@ti.com>

diff --git a/scripts/lib/wic/plugins/source/bootimg-efi.py b/scripts/lib/wic/plugins/source/bootimg-efi.py
index d6aeab2aade7011ef5e950de96f4080475139bef..43c6fd94d981c268d812f9849597ceb778ac3e3a 100644 (file)
--- a/scripts/lib/wic/plugins/source/bootimg-efi.py
+++ b/scripts/lib/wic/plugins/source/bootimg-efi.py
@@ -439,6 +439,13 @@ class BootimgEFIPlugin(SourcePlugin):
         logger.debug("Added %d extra blocks to %s to get to %d total blocks",
                      extra_blocks, part.mountpoint, blocks)
 
+        # required for compatibility with certain devices expecting file system
+        # block count to be equal to partition block count
+        if blocks < part.fixed_size:
+            blocks = part.fixed_size
+            logger.debug("Overriding %s to %d total blocks for compatibility",
+                     part.mountpoint, blocks)
+
         # dosfs image, created by mkdosfs
         bootimg = "%s/boot.img" % cr_workdir