u-boot/scripts/avbtool.py

655 class ImageChunk(object):  class
796     if chunk_hdr_sz != struct.calcsize(ImageChunk.FORMAT):
813       header_bin = self._image.read(struct.calcsize(ImageChunk.FORMAT))
814       (chunk_type, _, chunk_sz, total_sz) = struct.unpack(ImageChunk.FORMAT,
816       data_sz = total_sz - struct.calcsize(ImageChunk.FORMAT)
818       if chunk_type == ImageChunk.TYPE_RAW:
823         self._chunks.append(ImageChunk(ImageChunk.TYPE_RAW,
831       elif chunk_type == ImageChunk.TYPE_FILL:
836         self._chunks.append(ImageChunk(ImageChunk.TYPE_FILL,
842       elif chunk_type == ImageChunk.TYPE_DONT_CARE:
846         self._chunks.append(ImageChunk(ImageChunk.TYPE_DONT_CARE,
852       elif chunk_type == ImageChunk.TYPE_CRC32:
926     self._image.write(struct.pack(ImageChunk.FORMAT,
927                                   ImageChunk.TYPE_DONT_CARE,
930                                   struct.calcsize(ImageChunk.FORMAT)))
960     self._image.write(struct.pack(ImageChunk.FORMAT,
961                                   ImageChunk.TYPE_RAW,
965                                   struct.calcsize(ImageChunk.FORMAT)))
999     self._image.write(struct.pack(ImageChunk.FORMAT,
1000                                   ImageChunk.TYPE_FILL,
1003                                   4 + struct.calcsize(ImageChunk.FORMAT)))
1051       if chunk.chunk_type == ImageChunk.TYPE_RAW:
1054       elif chunk.chunk_type == ImageChunk.TYPE_FILL:
1059         assert chunk.chunk_type == ImageChunk.TYPE_DONT_CARE
1114         if chunk.chunk_type == ImageChunk.TYPE_RAW:
1116                          struct.calcsize(ImageChunk.FORMAT) + num_to_keep)
1118         elif chunk.chunk_type == ImageChunk.TYPE_FILL:
1120                          struct.calcsize(ImageChunk.FORMAT) + 4)
1123           assert chunk.chunk_type == ImageChunk.TYPE_DONT_CARE
1124           truncate_at = chunk.chunk_offset + struct.calcsize(ImageChunk.FORMAT)
1127         total_sz = data_sz + struct.calcsize(ImageChunk.FORMAT)
1129         self._image.write(struct.pack(ImageChunk.FORMAT,