binman: Support alignment of files

When packing files it is sometimes useful to align the start of each file,
e.g. if the flash driver can only access 32-bit-aligned data. Provides a
new property to support this.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/tools/binman/etype/files.py b/tools/binman/etype/files.py
index ce3832e3cd..1feebd0510 100644
--- a/tools/binman/etype/files.py
+++ b/tools/binman/etype/files.py
@@ -22,6 +22,7 @@ class Entry_files(Entry_section):
         - files-compress: Compression algorithm to use:
             none: No compression
             lz4: Use lz4 compression (via 'lz4' command-line utility)
+        - files-align: Align each file to the given alignment
 
     This entry reads a number of files and places each in a separate sub-entry
     within this entry. To access these you need to enable device-tree updates
@@ -38,6 +39,7 @@ class Entry_files(Entry_section):
             self.Raise("Missing 'pattern' property")
         self._files_compress = fdt_util.GetString(self._node, 'files-compress',
                                                   'none')
+        self._files_align = fdt_util.GetInt(self._node, 'files-align');
         self._require_matches = fdt_util.GetBool(self._node,
                                                 'require-matches')
 
@@ -55,6 +57,8 @@ class Entry_files(Entry_section):
             state.AddString(subnode, 'type', 'blob')
             state.AddString(subnode, 'filename', fname)
             state.AddString(subnode, 'compress', self._files_compress)
+            if self._files_align:
+                state.AddInt(subnode, 'align', self._files_align)
 
         # Read entries again, now that we have some
         self._ReadEntries()