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Simon Glass
14c4171f4f
|
8 years ago | |
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Documentation | ||
libfdt | 8 years ago | |
pylibfdt | 8 years ago | |
scripts | ||
tests | 8 years ago | |
.gitignore | ||
.travis.yml | ||
GPL | ||
Makefile | 8 years ago | |
Makefile.convert-dtsv0 | ||
Makefile.dtc | ||
Makefile.utils | ||
README | 8 years ago | |
README.license | ||
TODO | ||
checks.c | 8 years ago | |
convert-dtsv0-lexer.l | 8 years ago | |
data.c | 8 years ago | |
dtc-lexer.l | ||
dtc-parser.y | ||
dtc.c | 8 years ago | |
dtc.h | 8 years ago | |
dtdiff | ||
fdtdump.c | 8 years ago | |
fdtget.c | 8 years ago | |
fdtput.c | 8 years ago | |
flattree.c | 8 years ago | |
fstree.c | ||
livetree.c | 8 years ago | |
srcpos.c | ||
srcpos.h | ||
treesource.c | 8 years ago | |
util.c | 8 years ago | |
util.h |
README
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:
David Gibson <david@gibson.dropbear.id.au>
Jon Loeliger <jdl@jdl.com>
Python library
--------------
A Python library is also available. To build this you will need to install
swig and Python development files. On Debian distributions:
sudo apt-get install swig python-dev
The library provides an Fdt class which you can use like this:
$ PYTHONPATH=../pylibfdt python
>>> import libfdt
>>> fdt = libfdt.Fdt(open('test_tree1.dtb').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=%r' % (prop.name, prop.value)
compatible=bytearray(b'subnode1\x00')
>>> print '%s=%s' % (prop.name, prop.value)
compatible=subnode1
>>> node2 = fdt.path_offset('/')
>>> print fdt.getprop(node2, 'compatible')
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
$ python -c "import libfdt; help(libfdt)"
If you add new features, please check code coverage:
$ sudo apt-get install python-pip python-pytest
$ sudo pip install coverage
$ cd tests
$ coverage run pylibfdt_tests.py
$ coverage html
# Open 'htmlcov/index.html' in your browser
More work remains to support all of libfdt, including access to numeric
values.
Mailing list
------------
The following list is for discussion about dtc and libfdt implementation
mailto:devicetree-compiler@vger.kernel.org
Core device tree bindings are discussed on the devicetree-spec list:
mailto:devicetree-spec@vger.kernel.org