111 lines
4.1 KiB
Python
111 lines
4.1 KiB
Python
|
#!/usr/bin/env python3
|
||
|
|
|
||
|
|
# Copyright (c) 2019 - 2020 Nordic Semiconductor ASA
|
||
|
|
# Copyright (c) 2019 Linaro Limited
|
||
|
|
# Copyright (c) 2024 SILA Embedded Solutions GmbH
|
||
|
|
# SPDX-License-Identifier: Apache-2.0
|
||
|
|
|
||
|
|
# This script uses edtlib to generate a pickled edt from a devicetree
|
||
|
|
# (.dts) file. Information from binding files in YAML format is used
|
||
|
|
# as well.
|
||
|
|
#
|
||
|
|
# Bindings are files that describe devicetree nodes. Devicetree nodes are
|
||
|
|
# usually mapped to bindings via their 'compatible = "..."' property.
|
||
|
|
#
|
||
|
|
# See Zephyr's Devicetree user guide for details.
|
||
|
|
#
|
||
|
|
# Note: Do not access private (_-prefixed) identifiers from edtlib here (and
|
||
|
|
# also note that edtlib is not meant to expose the dtlib API directly).
|
||
|
|
# Instead, think of what API you need, and add it as a public documented API in
|
||
|
|
# edtlib. This will keep this script simple.
|
||
|
|
|
||
|
|
import argparse
|
||
|
|
import os
|
||
|
|
import pickle
|
||
|
|
import sys
|
||
|
|
from typing import NoReturn
|
||
|
|
|
||
|
|
sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'python-devicetree',
|
||
|
|
'src'))
|
||
|
|
|
||
|
|
import edtlib_logger
|
||
|
|
from devicetree import edtlib
|
||
|
|
|
||
|
|
|
||
|
|
def main():
|
||
|
|
args = parse_args()
|
||
|
|
|
||
|
|
edtlib_logger.setup_edtlib_logging()
|
||
|
|
|
||
|
|
vendor_prefixes = {}
|
||
|
|
for prefixes_file in args.vendor_prefixes:
|
||
|
|
vendor_prefixes.update(edtlib.load_vendor_prefixes_txt(prefixes_file))
|
||
|
|
|
||
|
|
try:
|
||
|
|
edt = edtlib.EDT(args.dts, args.bindings_dirs,
|
||
|
|
# Suppress this warning if it's suppressed in dtc
|
||
|
|
warn_reg_unit_address_mismatch=
|
||
|
|
"-Wno-simple_bus_reg" not in args.dtc_flags,
|
||
|
|
default_prop_types=True,
|
||
|
|
infer_binding_for_paths=["/zephyr,user"],
|
||
|
|
werror=args.edtlib_Werror,
|
||
|
|
vendor_prefixes=vendor_prefixes)
|
||
|
|
except edtlib.EDTError as e:
|
||
|
|
sys.exit(f"devicetree error: {e}")
|
||
|
|
|
||
|
|
# Save merged DTS source, as a debugging aid
|
||
|
|
with open(args.dts_out, "w", encoding="utf-8") as f:
|
||
|
|
print(edt.dts_source, file=f)
|
||
|
|
|
||
|
|
write_pickled_edt(edt, args.edt_pickle_out)
|
||
|
|
|
||
|
|
|
||
|
|
def parse_args() -> argparse.Namespace:
|
||
|
|
# Returns parsed command-line arguments
|
||
|
|
|
||
|
|
parser = argparse.ArgumentParser(allow_abbrev=False)
|
||
|
|
parser.add_argument("--dts", required=True, help="DTS file")
|
||
|
|
parser.add_argument("--dtc-flags",
|
||
|
|
help="'dtc' devicetree compiler flags, some of which "
|
||
|
|
"might be respected here")
|
||
|
|
parser.add_argument("--bindings-dirs", nargs='+', required=True,
|
||
|
|
help="directory with bindings in YAML format, "
|
||
|
|
"we allow multiple")
|
||
|
|
parser.add_argument("--dts-out", required=True,
|
||
|
|
help="path to write merged DTS source code to (e.g. "
|
||
|
|
"as a debugging aid)")
|
||
|
|
parser.add_argument("--edt-pickle-out",
|
||
|
|
help="path to write pickled edtlib.EDT object to", required=True)
|
||
|
|
parser.add_argument("--vendor-prefixes", action='append', default=[],
|
||
|
|
help="vendor-prefixes.txt path; used for validation; "
|
||
|
|
"may be given multiple times")
|
||
|
|
parser.add_argument("--edtlib-Werror", action="store_true",
|
||
|
|
help="if set, edtlib-specific warnings become errors. "
|
||
|
|
"(this does not apply to warnings shared "
|
||
|
|
"with dtc.)")
|
||
|
|
|
||
|
|
return parser.parse_args()
|
||
|
|
|
||
|
|
|
||
|
|
def write_pickled_edt(edt: edtlib.EDT, out_file: str) -> None:
|
||
|
|
# Writes the edt object in pickle format to out_file.
|
||
|
|
|
||
|
|
with open(out_file, 'wb') as f:
|
||
|
|
# Pickle protocol version 4 is the default as of Python 3.8
|
||
|
|
# and was introduced in 3.4, so it is both available and
|
||
|
|
# recommended on all versions of Python that Zephyr supports
|
||
|
|
# (at time of writing, Python 3.6 was Zephyr's minimum
|
||
|
|
# version, and 3.10 the most recent CPython release).
|
||
|
|
#
|
||
|
|
# Using a common protocol version here will hopefully avoid
|
||
|
|
# reproducibility issues in different Python installations.
|
||
|
|
pickle.dump(edt, f, protocol=4)
|
||
|
|
|
||
|
|
|
||
|
|
def err(s: str) -> NoReturn:
|
||
|
|
raise Exception(s)
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == "__main__":
|
||
|
|
main()
|