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.

(From OE-Core rev: 2126242c19b0c3dea12c605da8b24b08a9cb803f)

Signed-off-by: Randolph Sapp <rs@ti.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
(cherry picked from commit d16301ccdfb97bf126738262eec594008c282df1)
Signed-off-by: Steve Sakoman <steve@sakoman.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/scripts/lib/wic/plugins/source/bootimg-efi.py b/scripts/lib/wic/plugins/source/bootimg-efi.py
index 2cfdc10ecd..05e8471116 100644
--- a/scripts/lib/wic/plugins/source/bootimg-efi.py
+++ b/scripts/lib/wic/plugins/source/bootimg-efi.py
@@ -277,6 +277,13 @@ 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