binman: Convert mkimage to Entry_section

This is needed to handle mkimage with inner section located itself in a
section.

Signed-off-by: Marek Vasut <[email protected]>
Use BuildSectionData() instead of ObtainContents(), add tests and a few
other minor fixes:
Signed-off-by: Simon Glass <[email protected]>

1 files changed, 2 insertions, 4 deletions

diff --git a/tools/binman/entry.py b/tools/binman/entry.py
index f20f32213a9..0d4cb94f700 100644
--- a/tools/binman/entry.py
+++ b/tools/binman/entry.py
@@ -1314,10 +1314,8 @@ features to produce new behaviours.
         """
         data = b''
         for entry in entries:
-            # First get the input data and put it in a file. If not available,
-            # try later.
-            if not entry.ObtainContents(fake_size=fake_size):
-                return None, None, None
+            # First get the input data and put it in a file
+            entry.ObtainContents(fake_size=fake_size)
             data += entry.GetData()
         uniq = self.GetUniqueName()
         fname = tools.get_output_filename(f'{prefix}.{uniq}')