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android / platform / external / dtc / refs/tags/platform-tools-34.0.5
tag2985cc6e02c3dd4e0569a8b1f37633408debb20f
taggerThe Android Open Source Project <initial-contribution@android.com>Tue Jan 30 14:48:07 2024 -0800
object620454b3add85d5e92aadeda457a25fa63e210eb 
Platform Tools Release 34.0.5 (10900879)
commit620454b3add85d5e92aadeda457a25fa63e210eb[log] [tgz]
authorAndroid Build Coastguard Worker <android-build-coastguard-worker@google.com>Wed Jun 28 13:25:56 2023 +0000
committerAndroid Build Coastguard Worker <android-build-coastguard-worker@google.com>Wed Jun 28 13:25:56 2023 +0000
tree95478043033d47d0447e141e8174777cf0446efc
parente7c134a8bfc124640f393d9ae6c4b178325971ec [diff]
parent11c0b06b54e0492b7fec14aede564f0034b7b975 [diff]
Snap for 10399941 from 11c0b06b54e0492b7fec14aede564f0034b7b975 to sdk-release

Change-Id: Ide9638a044e1c659c1909d956c2db10912b5a282
tree: 95478043033d47d0447e141e8174777cf0446efc
  1. Documentation/
  2. fuzzing/
  3. libfdt/
  4. pylibfdt/
  5. scripts/
  6. tests/
  7. .cirrus.yml
  8. .editorconfig
  9. .gitignore
  10. .travis.yml
  11. Android.bp
  12. BSD-2-Clause
  13. BUILD.bazel
  14. checks.c
  15. CONTRIBUTING.md
  16. convert-dtsv0-lexer.l
  17. data.c
  18. dtc-lexer.l
  19. dtc-parser.y
  20. dtc.c
  21. dtc.h
  22. dtdiff
  23. fdtdump.c
  24. fdtget.c
  25. fdtoverlay.c
  26. fdtput.c
  27. flattree.c
  28. fstree.c
  29. GPL
  30. LGPL
  31. LICENSE
  32. livetree.c
  33. Makefile
  34. Makefile.convert-dtsv0
  35. Makefile.dtc
  36. Makefile.utils
  37. MANIFEST.in
  38. meson.build
  39. meson_options.txt
  40. METADATA
  41. MODULE_LICENSE_BSD
  42. MODULE_LICENSE_GPL
  43. MODULE_LICENSE_LGPL
  44. OWNERS
  45. README.license
  46. README.md
  47. README.version
  48. setup.py
  49. srcpos.c
  50. srcpos.h
  51. TODO
  52. treesource.c
  53. util.c
  54. util.h
  55. version_gen.h.in
  56. version_non_gen.h
  57. WORKSPACE
  58. yamltree.c
README.md

Device Tree Compiler and libfdt

The source tree contains the Device Tree Compiler (dtc) toolchain for working with device tree source and binary files and also libfdt, a utility library for reading and manipulating the binary format.

dtc and libfdt are maintained by:

Python library

A Python library wrapping libfdt is also available. To build this you will need to install swig and Python development files. On Debian distributions:

$ sudo apt-get install swig python3-dev

The library provides an Fdt class which you can use like this:

$ PYTHONPATH=../pylibfdt python3
>>> import libfdt
>>> fdt = libfdt.Fdt(open('test_tree1.dtb', mode='rb').read())
>>> node = fdt.path_offset('/subnode@1')
>>> print(node)
124
>>> prop_offset = fdt.first_property_offset(node)
>>> prop = fdt.get_property_by_offset(prop_offset)
>>> print('%s=%s' % (prop.name, prop.as_str()))
compatible=subnode1
>>> node2 = fdt.path_offset('/')
>>> print(fdt.getprop(node2, 'compatible').as_str())
test_tree1

You will find tests in tests/pylibfdt_tests.py showing how to use each method. Help is available using the Python help command, e.g.:

$ cd pylibfdt
$ python3 -c "import libfdt; help(libfdt)"

If you add new features, please check code coverage:

$ sudo apt-get install python3-coverage
$ cd tests
# It's just 'coverage' on most other distributions
$ python3-coverage run pylibfdt_tests.py
$ python3-coverage html
# Open 'htmlcov/index.html' in your browser

The library can be installed with pip from a local source tree:

$ pip install . [--user|--prefix=/path/to/install_dir]

Or directly from a remote git repo:

$ pip install git+git://git.kernel.org/pub/scm/utils/dtc/dtc.git@main

The install depends on libfdt shared library being installed on the host system first. Generally, using --user or --prefix is not necessary and pip will use the default location for the Python installation which varies if the user is root or not.

You can also install everything via make if you like, but pip is recommended.

To install both libfdt and pylibfdt you can use:

$ make install [PREFIX=/path/to/install_dir]

To disable building the python library, even if swig and Python are available, use:

$ make NO_PYTHON=1

More work remains to support all of libfdt, including access to numeric values.

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