| tag | 66dbfc5bbbbc2aade889881a2b4358eab6b4fac7 | |
|---|---|---|
| tagger | David Gibson <david@gibson.dropbear.id.au> | Thu Feb 09 21:34:16 2023 +1100 |
| object | 039a99414e778332d8f9c04cbd3072e1dcc62798 |
DTC 1.7.0
Changes since v1.6.1 include:
* dtc
* Fix -Oasm output on PA-RISC by avoiding ';' separators
* Put symbolic label references in -Odts output when possible
* Add label relative path references
* Don't incorrectly attempt to create fixups for reference to path
in overlays
* Warning rather than hard error if integer expression results are
truncated due to cell size
* libfdt
* Add fdt_get_property_by_offset_w() function
* pylibfdt
* Fixed to work with Python 3.10
* A number of extra methods
* Fix out of tree build
* fdtget
* Add raw bytes output mode
* General
* Fixes for mixed-signedness comparison warnings
* Assorted other warning fixes
* Assorted updates to checks
* Assorted bugfixes
* Fix scripts to work with dash as well as bash
* Allow static builds
* Formalize Signed-off-by usage
| commit | 039a99414e778332d8f9c04cbd3072e1dcc62798 | [log] [tgz] |
|---|---|---|
| author | David Gibson <david@gibson.dropbear.id.au> | Thu Feb 09 21:01:35 2023 +1100 |
| committer | David Gibson <david@gibson.dropbear.id.au> | Thu Feb 09 21:01:35 2023 +1100 |
| tree | 7ba4001b0434c08233a3ffa6d910e1610cae58d3 | |
| parent | 9b62ec84bb2da0ce42bc978ce8dc0ba197c9fa71 [diff] |
Bump version to v1.7.0 It's been rather too long since the last release, and quite a lot of changes have accumulated. Finally get around to rolling a release. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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:
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.