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93 lines
2.7 KiB
93 lines
2.7 KiB
#!/usr/bin/env python3 |
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# |
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# Copyright (c) 2022 Kumar Gala <galak@kernel.org> |
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# Copyright (c) 2025 Nordic Semiconductor ASA |
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# |
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# SPDX-License-Identifier: Apache-2.0 |
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import argparse |
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import os |
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import yaml |
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try: |
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# Use the C LibYAML parser if available, rather than the Python parser. |
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from yaml import CSafeLoader as SafeLoader |
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except ImportError: |
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from yaml import SafeLoader # type: ignore |
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HEADER = """\ |
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# Generated devicetree Kconfig |
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# |
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# SPDX-License-Identifier: Apache-2.0""" |
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KCONFIG_TEMPLATE = """ |
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DT_COMPAT_{COMPAT} := {compat} |
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config DT_HAS_{COMPAT}_ENABLED |
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\tdef_bool $(dt_compat_enabled,$(DT_COMPAT_{COMPAT}))""" |
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# Character translation table used to derive Kconfig symbol names |
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TO_UNDERSCORES = str.maketrans("-,.@/+", "______") |
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def binding_paths(bindings_dirs): |
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# Yields paths to all bindings (.yaml files) in 'bindings_dirs' |
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for bindings_dir in bindings_dirs: |
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for root, _, filenames in os.walk(bindings_dir): |
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for filename in filenames: |
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if filename.endswith((".yaml", ".yml")): |
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yield os.path.join(root, filename) |
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def parse_args(): |
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# Returns parsed command-line arguments |
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parser = argparse.ArgumentParser(allow_abbrev=False) |
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parser.add_argument("--kconfig-out", required=True, |
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help="path to write the Kconfig file") |
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parser.add_argument("--bindings-dirs", nargs='+', required=True, |
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help="directory with bindings in YAML format, " |
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"we allow multiple") |
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return parser.parse_args() |
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def main(): |
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args = parse_args() |
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compats = set() |
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for binding_path in binding_paths(args.bindings_dirs): |
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with open(binding_path, encoding="utf-8") as f: |
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try: |
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# Parsed PyYAML representation graph. For our purpose, |
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# we don't need the whole file converted into a dict. |
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root = yaml.compose(f, Loader=SafeLoader) |
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except yaml.YAMLError as e: |
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print(f"WARNING: '{binding_path}' appears in binding " |
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f"directories but isn't valid YAML: {e}") |
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continue |
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if not isinstance(root, yaml.MappingNode): |
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continue |
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for key, node in root.value: |
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if key.value == "compatible" and isinstance(node, yaml.ScalarNode): |
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compats.add(node.value) |
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break |
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with open(args.kconfig_out, "w", encoding="utf-8") as kconfig_file: |
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print(HEADER, file=kconfig_file) |
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for c in sorted(compats): |
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out = KCONFIG_TEMPLATE.format( |
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compat=c, COMPAT=c.upper().translate(TO_UNDERSCORES) |
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) |
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print(out, file=kconfig_file) |
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if __name__ == "__main__": |
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main()
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