imgsplit
Utility to split an image file into multiple segement files by removing runs of null or zero bytes.
Flashing just the non-null segments of an embedded firmware can be substantially faster than flashing the entire image.
Install
pip3 install imgsplit
Usage
imgsplit input.img
imgsplit input output_segment_at_%d.img`
$ imgsplit --help
Usage:
imgsplit (--version|--help)
imgsplit [--bs BS] [--minskip MINSKIP] [--outdir OUTDIR] <image> [<outpattern>]
Arguments:
--bs BS Block size in bytes. Segments are aligned to this size. [default: 512]
--minskip MINSKIP Minimum number of zero blocks to skip. [default: 1024]
--outdir OUTDIR Directory to put the image segments in. [default: ./]
<image> Image file to split.
<outpattern> Pattern to expand with segment offset to name the segment files, e.g., `image_%08x.img`.
Contributing
Please submit bugs, questions, suggestions, or (ideally) contributions as issues and pull requests on Github.
Authors
David R. Bild
License
Copyright 2019 David R. Bild
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this work except in compliance with the License. You may obtain a copy of the License from the LICENSE.txt file or at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
