754 lines
26 KiB
Python
Executable File
754 lines
26 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# Copyright (c) 2017, Linaro Limited
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# Copyright (c) 2018, Bobby Noelte
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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# vim: ai:ts=4:sw=4
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import sys
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from os import listdir
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import os, fnmatch
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import re
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import yaml
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import argparse
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from collections.abc import Mapping
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from copy import deepcopy
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from devicetree import parse_file
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from extract.globals import *
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import extract.globals
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from extract.clocks import clocks
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from extract.compatible import compatible
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from extract.interrupts import interrupts
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from extract.reg import reg
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from extract.flash import flash
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from extract.pinctrl import pinctrl
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from extract.default import default
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class Bindings(yaml.Loader):
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##
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# List of all yaml files available for yaml loaders
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# of this class. Must be preset before the first
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# load operation.
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_files = []
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##
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# Files that are already included.
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# Must be reset on the load of every new binding
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_included = []
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@classmethod
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def bindings(cls, compatibles, yaml_dirs):
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# find unique set of compatibles across all active nodes
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s = set()
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for k, v in compatibles.items():
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if isinstance(v, list):
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for item in v:
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s.add(item)
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else:
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s.add(v)
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# scan YAML files and find the ones we are interested in
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cls._files = []
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for yaml_dir in yaml_dirs:
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for root, dirnames, filenames in os.walk(yaml_dir):
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for filename in fnmatch.filter(filenames, '*.yaml'):
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cls._files.append(os.path.join(root, filename))
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yaml_list = {}
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yaml_list['node'] = {}
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yaml_list['bus'] = {}
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yaml_list['compat'] = []
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file_load_list = set()
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for file in cls._files:
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for line in open(file, 'r', encoding='utf-8'):
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if re.search('^\s+constraint:*', line):
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c = line.split(':')[1].strip()
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c = c.strip('"')
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if c in s:
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if file not in file_load_list:
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file_load_list.add(file)
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with open(file, 'r', encoding='utf-8') as yf:
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cls._included = []
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l = yaml_traverse_inherited(yaml.load(yf, cls))
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if c not in yaml_list['compat']:
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yaml_list['compat'].append(c)
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if 'parent' in l:
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bus = l['parent']['bus']
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if not bus in yaml_list['bus']:
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yaml_list['bus'][bus] = {}
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yaml_list['bus'][bus][c] = l
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else:
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yaml_list['node'][c] = l
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return (yaml_list['node'], yaml_list['bus'], yaml_list['compat'])
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def __init__(self, stream):
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filepath = os.path.realpath(stream.name)
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if filepath in self._included:
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print("Error:: circular inclusion for file name '{}'".
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format(stream.name))
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raise yaml.constructor.ConstructorError
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self._included.append(filepath)
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super(Bindings, self).__init__(stream)
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Bindings.add_constructor('!include', Bindings._include)
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Bindings.add_constructor('!import', Bindings._include)
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def _include(self, node):
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if isinstance(node, yaml.ScalarNode):
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return self._extract_file(self.construct_scalar(node))
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elif isinstance(node, yaml.SequenceNode):
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result = []
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for filename in self.construct_sequence(node):
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result.append(self._extract_file(filename))
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return result
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elif isinstance(node, yaml.MappingNode):
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result = {}
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for k, v in self.construct_mapping(node).iteritems():
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result[k] = self._extract_file(v)
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return result
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else:
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print("Error:: unrecognised node type in !include statement")
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raise yaml.constructor.ConstructorError
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def _extract_file(self, filename):
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filepaths = [filepath for filepath in self._files if filepath.endswith(filename)]
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if len(filepaths) == 0:
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print("Error:: unknown file name '{}' in !include statement".
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format(filename))
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raise yaml.constructor.ConstructorError
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elif len(filepaths) > 1:
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# multiple candidates for filename
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files = []
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for filepath in filepaths:
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if os.path.basename(filename) == os.path.basename(filepath):
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files.append(filepath)
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if len(files) > 1:
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print("Error:: multiple candidates for file name '{}' in !include statement".
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format(filename), filepaths)
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raise yaml.constructor.ConstructorError
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filepaths = files
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with open(filepaths[0], 'r', encoding='utf-8') as f:
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return yaml.load(f, Bindings)
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def extract_controller(node_address, prop, prop_values, index, def_label, generic):
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prop_def = {}
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prop_alias = {}
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# get controller node (referenced via phandle)
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cell_parent = phandles[prop_values[0]]
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for k in reduced[cell_parent]['props'].keys():
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if k[0] == '#' and '-cells' in k:
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num_cells = reduced[cell_parent]['props'].get(k)
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# get controller node (referenced via phandle)
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cell_parent = phandles[prop_values[0]]
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try:
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l_cell = reduced[cell_parent]['props'].get('label')
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except KeyError:
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l_cell = None
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if l_cell is not None:
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l_base = def_label.split('/')
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# Check is defined should be indexed (_0, _1)
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if index == 0 and len(prop_values) < (num_cells + 2):
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# 0 or 1 element in prop_values
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# ( ie len < num_cells + phandle + 1 )
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l_idx = []
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else:
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l_idx = [str(index)]
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# Check node generation requirements
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try:
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generation = get_binding(node_address)['properties'
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][prop]['generation']
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except:
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generation = ''
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if 'use-prop-name' in generation:
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l_cellname = convert_string_to_label(prop + '_' + 'controller')
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else:
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l_cellname = convert_string_to_label(generic + '_' + 'controller')
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label = l_base + [l_cellname] + l_idx
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prop_def['_'.join(label)] = "\"" + l_cell + "\""
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#generate defs also if node is referenced as an alias in dts
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if node_address in aliases:
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add_prop_aliases(
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node_address,
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lambda alias:
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'_'.join([convert_string_to_label(alias)] + label[1:]),
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'_'.join(label),
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prop_alias)
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insert_defs(node_address, prop_def, prop_alias)
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# prop off phandle + num_cells to get to next list item
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prop_values = prop_values[num_cells+1:]
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# recurse if we have anything left
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if len(prop_values):
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extract_controller(node_address, prop, prop_values, index + 1,
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def_label, generic)
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def extract_cells(node_address, prop, prop_values, names, index,
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def_label, generic):
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cell_parent = phandles[prop_values.pop(0)]
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try:
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cell_yaml = get_binding(cell_parent)
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except:
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raise Exception(
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"Could not find yaml description for " +
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reduced[cell_parent]['name'])
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try:
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name = names.pop(0).upper()
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except:
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name = ''
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# Get number of cells per element of current property
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for k in reduced[cell_parent]['props'].keys():
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if k[0] == '#' and '-cells' in k:
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num_cells = reduced[cell_parent]['props'].get(k)
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if k in cell_yaml.keys():
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cell_yaml_names = k
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else:
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cell_yaml_names = '#cells'
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try:
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generation = get_binding(node_address)['properties'][prop
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]['generation']
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except:
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generation = ''
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if 'use-prop-name' in generation:
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l_cell = [convert_string_to_label(str(prop))]
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else:
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l_cell = [convert_string_to_label(str(generic))]
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l_base = def_label.split('/')
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# Check if #define should be indexed (_0, _1, ...)
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if index == 0 and len(prop_values) < (num_cells + 2):
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# Less than 2 elements in prop_values (ie len < num_cells + phandle + 1)
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# Indexing is not needed
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l_idx = []
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else:
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l_idx = [str(index)]
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prop_def = {}
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prop_alias = {}
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# Generate label for each field of the property element
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for i in range(num_cells):
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l_cellname = [str(cell_yaml[cell_yaml_names][i]).upper()]
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if l_cell == l_cellname:
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label = l_base + l_cell + l_idx
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else:
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label = l_base + l_cell + l_cellname + l_idx
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label_name = l_base + [name] + l_cellname
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prop_def['_'.join(label)] = prop_values.pop(0)
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if len(name):
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prop_alias['_'.join(label_name)] = '_'.join(label)
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# generate defs for node aliases
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if node_address in aliases:
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add_prop_aliases(
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node_address,
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lambda alias:
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'_'.join([convert_string_to_label(alias)] + label[1:]),
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'_'.join(label),
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prop_alias)
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insert_defs(node_address, prop_def, prop_alias)
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# recurse if we have anything left
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if len(prop_values):
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extract_cells(node_address, prop, prop_values, names,
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index + 1, def_label, generic)
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def extract_single(node_address, prop, key, def_label):
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prop_def = {}
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prop_alias = {}
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if isinstance(prop, list):
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for i, p in enumerate(prop):
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k = convert_string_to_label(key)
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label = def_label + '_' + k
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if isinstance(p, str):
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p = "\"" + p + "\""
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prop_def[label + '_' + str(i)] = p
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else:
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k = convert_string_to_label(key)
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label = def_label + '_' + k
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if prop == 'parent-label':
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prop = find_parent_prop(node_address, 'label')
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if isinstance(prop, str):
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prop = "\"" + prop + "\""
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prop_def[label] = prop
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# generate defs for node aliases
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if node_address in aliases:
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add_prop_aliases(
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node_address,
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lambda alias:
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convert_string_to_label(alias) + '_' + k,
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label,
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prop_alias)
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insert_defs(node_address, prop_def, prop_alias)
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def extract_string_prop(node_address, key, label):
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prop_def = {}
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node = reduced[node_address]
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prop = node['props'][key]
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k = convert_string_to_label(key)
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prop_def[label] = "\"" + prop + "\""
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if node_address in defs:
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defs[node_address].update(prop_def)
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else:
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defs[node_address] = prop_def
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def extract_property(node_compat, node_address, prop, prop_val, names):
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node = reduced[node_address]
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yaml_node_compat = get_binding(node_address)
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if 'base_label' in yaml_node_compat:
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def_label = yaml_node_compat.get('base_label')
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else:
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def_label = get_node_label(node_address)
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if 'parent' in yaml_node_compat:
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if 'bus' in yaml_node_compat['parent']:
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# get parent label
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parent_address = get_parent_address(node_address)
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#check parent has matching child bus value
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try:
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parent_yaml = get_binding(parent_address)
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parent_bus = parent_yaml['child']['bus']
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except (KeyError, TypeError) as e:
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raise Exception(str(node_address) + " defines parent " +
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str(parent_address) + " as bus master but " +
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str(parent_address) + " not configured as bus master " +
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"in yaml description")
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if parent_bus != yaml_node_compat['parent']['bus']:
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bus_value = yaml_node_compat['parent']['bus']
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raise Exception(str(node_address) + " defines parent " +
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str(parent_address) + " as " + bus_value +
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" bus master but " + str(parent_address) +
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" configured as " + str(parent_bus) +
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" bus master")
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# Generate alias definition if parent has any alias
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if parent_address in aliases:
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for i in aliases[parent_address]:
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# Build an alias name that respects device tree specs
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node_name = node_compat + '-' + node_address.split('@')[-1]
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node_strip = node_name.replace('@','-').replace(',','-')
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node_alias = i + '-' + node_strip
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if node_alias not in aliases[node_address]:
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# Need to generate alias name for this node:
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aliases[node_address].append(node_alias)
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# Use parent label to generate label
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parent_label = get_node_label(parent_address)
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def_label = parent_label + '_' + def_label
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# Generate bus-name define
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extract_single(node_address, 'parent-label',
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'bus-name', 'DT_' + def_label)
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if 'base_label' not in yaml_node_compat:
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def_label = 'DT_' + def_label
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if prop == 'reg':
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reg.extract(node_address, names, def_label, 1)
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elif prop == 'interrupts' or prop == 'interrupts-extended':
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interrupts.extract(node_address, prop, names, def_label)
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elif prop == 'compatible':
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compatible.extract(node_address, prop, def_label)
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elif 'pinctrl-' in prop:
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pinctrl.extract(node_address, prop, def_label)
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elif 'clocks' in prop:
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clocks.extract(node_address, prop, def_label)
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elif 'pwms' in prop or 'gpios' in prop:
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# drop the 's' from the prop
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generic = prop[:-1]
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try:
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prop_values = list(reduced[node_address]['props'].get(prop))
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except:
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prop_values = reduced[node_address]['props'].get(prop)
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# Newer versions of dtc might have the property look like
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# cs-gpios = <0x05 0x0d 0x00>, < 0x06 0x00 0x00>;
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# So we need to flatten the list in that case
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if isinstance(prop_values[0], list):
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prop_values = [item for sublist in prop_values for item in sublist]
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extract_controller(node_address, prop, prop_values, 0,
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def_label, generic)
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extract_cells(node_address, prop, prop_values,
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names, 0, def_label, generic)
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else:
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default.extract(node_address, prop, prop_val['type'], def_label)
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def extract_node_include_info(reduced, root_node_address, sub_node_address,
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y_sub):
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filter_list = ['interrupt-names',
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'reg-names',
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'phandle',
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'linux,phandle']
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node = reduced[sub_node_address]
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node_compat = get_compat(root_node_address)
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if node_compat not in get_binding_compats():
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return {}, {}
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if y_sub is None:
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y_node = get_binding(root_node_address)
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else:
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y_node = y_sub
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# check to see if we need to process the properties
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for k, v in y_node['properties'].items():
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if 'properties' in v:
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for c in reduced:
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if root_node_address + '/' in c:
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extract_node_include_info(
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reduced, root_node_address, c, v)
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if 'generation' in v:
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match = False
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# Handle any per node extraction first. For example we
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# extract a few different defines for a flash partition so its
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# easier to handle the partition node in one step
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if 'partition@' in sub_node_address:
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flash.extract_partition(sub_node_address)
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continue
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# Handle each property individually, this ends up handling common
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# patterns for things like reg, interrupts, etc that we don't need
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# any special case handling at a node level
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for c in node['props'].keys():
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# if prop is in filter list - ignore it
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if c in filter_list:
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continue
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if re.match(k + '$', c):
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if 'pinctrl-' in c:
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names = deepcopy(node['props'].get(
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'pinctrl-names', []))
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else:
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if not c.endswith("-names"):
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names = deepcopy(node['props'].get(
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c[:-1] + '-names', []))
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if not names:
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names = deepcopy(node['props'].get(
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c + '-names', []))
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if not isinstance(names, list):
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names = [names]
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extract_property(
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node_compat, sub_node_address, c, v, names)
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match = True
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# Handle the case that we have a boolean property, but its not
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# in the dts
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if not match:
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if v['type'] == "boolean":
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extract_property(
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node_compat, sub_node_address, k, v, None)
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def dict_merge(dct, merge_dct):
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# from https://gist.github.com/angstwad/bf22d1822c38a92ec0a9
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""" Recursive dict merge. Inspired by :meth:``dict.update()``, instead of
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updating only top-level keys, dict_merge recurses down into dicts nested
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to an arbitrary depth, updating keys. The ``merge_dct`` is merged into
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``dct``.
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:param dct: dict onto which the merge is executed
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:param merge_dct: dct merged into dct
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:return: None
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"""
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for k, v in merge_dct.items():
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if (k in dct and isinstance(dct[k], dict)
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and isinstance(merge_dct[k], Mapping)):
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dict_merge(dct[k], merge_dct[k])
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else:
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if k in dct and dct[k] != merge_dct[k]:
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print("extract_dts_includes.py: Merge of '{}': '{}' overwrites '{}'.".format(
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k, merge_dct[k], dct[k]))
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dct[k] = merge_dct[k]
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def yaml_traverse_inherited(node):
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""" Recursive overload procedure inside ``node``
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``inherits`` section is searched for and used as node base when found.
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Base values are then overloaded by node values
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and some consistency checks are done.
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:param node:
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:return: node
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"""
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# do some consistency checks. Especially id is needed for further
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# processing. title must be first to check.
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if 'title' not in node:
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# If 'title' is missing, make fault finding more easy.
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# Give a hint what node we are looking at.
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print("extract_dts_includes.py: node without 'title' -", node)
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for prop in ('title', 'version', 'description'):
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if prop not in node:
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node[prop] = "<unknown {}>".format(prop)
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print("extract_dts_includes.py: '{}' property missing".format(prop),
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"in '{}' binding. Using '{}'.".format(node['title'], node[prop]))
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# warn if we have an 'id' field
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if 'id' in node:
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print("extract_dts_includes.py: WARNING: id field set",
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"in '{}', should be removed.".format(node['title']))
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if 'inherits' in node:
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if isinstance(node['inherits'], list):
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inherits_list = node['inherits']
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else:
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inherits_list = [node['inherits'],]
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node.pop('inherits')
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for inherits in inherits_list:
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if 'inherits' in inherits:
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inherits = yaml_traverse_inherited(inherits)
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# title, description, version of inherited node
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# are overwritten by intention. Remove to prevent dct_merge to
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# complain about duplicates.
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inherits.pop('title', None)
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inherits.pop('version', None)
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inherits.pop('description', None)
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dict_merge(inherits, node)
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node = inherits
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return node
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def get_key_value(k, v, tabstop):
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label = "#define " + k
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# calculate the name's tabs
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if len(label) % 8:
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tabs = (len(label) + 7) >> 3
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else:
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tabs = (len(label) >> 3) + 1
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line = label
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for i in range(0, tabstop - tabs + 1):
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line += '\t'
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line += str(v)
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line += '\n'
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return line
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def output_keyvalue_lines(fd):
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node_keys = sorted(defs.keys())
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for node in node_keys:
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fd.write('# ' + node.split('/')[-1])
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fd.write("\n")
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prop_keys = sorted(defs[node].keys())
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for prop in prop_keys:
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if prop == 'aliases':
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for entry in sorted(defs[node][prop]):
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a = defs[node][prop].get(entry)
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fd.write("%s=%s\n" % (entry, defs[node].get(a)))
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else:
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fd.write("%s=%s\n" % (prop, defs[node].get(prop)))
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fd.write("\n")
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def generate_keyvalue_file(kv_file):
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with open(kv_file, "w") as fd:
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output_keyvalue_lines(fd)
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def output_include_lines(fd, fixups):
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compatible = reduced['/']['props']['compatible'][0]
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fd.write("/**************************************************\n")
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fd.write(" * Generated include file for " + compatible)
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fd.write("\n")
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fd.write(" * DO NOT MODIFY\n")
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fd.write(" */\n")
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fd.write("\n")
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fd.write("#ifndef DEVICE_TREE_BOARD_H" + "\n")
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fd.write("#define DEVICE_TREE_BOARD_H" + "\n")
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fd.write("\n")
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node_keys = sorted(defs.keys())
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for node in node_keys:
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fd.write('/* ' + node.split('/')[-1] + ' */')
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fd.write("\n")
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max_dict_key = lambda d: max(len(k) for k in d.keys())
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maxlength = 0
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if defs[node].get('aliases'):
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maxlength = max_dict_key(defs[node]['aliases'])
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maxlength = max(maxlength, max_dict_key(defs[node])) + len('#define ')
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if maxlength % 8:
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maxtabstop = (maxlength + 7) >> 3
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else:
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maxtabstop = (maxlength >> 3) + 1
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if (maxtabstop * 8 - maxlength) <= 2:
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maxtabstop += 1
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prop_keys = sorted(defs[node].keys())
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for prop in prop_keys:
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if prop == 'aliases':
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for entry in sorted(defs[node][prop]):
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a = defs[node][prop].get(entry)
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fd.write(get_key_value(entry, a, maxtabstop))
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else:
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fd.write(get_key_value(prop, defs[node].get(prop), maxtabstop))
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fd.write("\n")
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if fixups:
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for fixup in fixups:
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if os.path.exists(fixup):
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fd.write("\n")
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fd.write(
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"/* Following definitions fixup the generated include */\n")
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try:
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with open(fixup, "r", encoding="utf-8") as fixup_fd:
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for line in fixup_fd.readlines():
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fd.write(line)
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fd.write("\n")
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except:
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raise Exception(
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"Input file " + os.path.abspath(fixup) +
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" does not exist.")
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fd.write("#endif\n")
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def generate_include_file(inc_file, fixups):
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with open(inc_file, "w") as fd:
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output_include_lines(fd, fixups)
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def load_and_parse_dts(dts_file):
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with open(dts_file, "r", encoding="utf-8") as fd:
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dts = parse_file(fd)
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return dts
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def load_yaml_descriptions(dts, yaml_dirs):
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compatibles = get_all_compatibles(dts['/'], '/', {})
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(bindings, bus, bindings_compat) = Bindings.bindings(compatibles, yaml_dirs)
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if not bindings:
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raise Exception("Missing YAML information. Check YAML sources")
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return (bindings, bus, bindings_compat)
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def generate_node_definitions():
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for k, v in reduced.items():
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node_compat = get_compat(k)
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if node_compat is not None and node_compat in get_binding_compats():
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extract_node_include_info(reduced, k, k, None)
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if defs == {}:
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raise Exception("No information parsed from dts file.")
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for k, v in regs_config.items():
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if k in chosen:
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reg.extract(chosen[k], None, v, 1024)
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for k, v in name_config.items():
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if k in chosen:
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extract_string_prop(chosen[k], "label", v)
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node_address = chosen.get('zephyr,flash', 'dummy-flash')
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flash.extract(node_address, 'zephyr,flash', 'FLASH')
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node_address = chosen.get('zephyr,code-partition', node_address)
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flash.extract(node_address, 'zephyr,code-partition', 'FLASH')
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return defs
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def parse_arguments():
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rdh = argparse.RawDescriptionHelpFormatter
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parser = argparse.ArgumentParser(description=__doc__, formatter_class=rdh)
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parser.add_argument("-d", "--dts", nargs=1, required=True, help="DTS file")
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parser.add_argument("-y", "--yaml", nargs='+', required=True,
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help="YAML file directories, we allow multiple")
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parser.add_argument("-f", "--fixup", nargs='+',
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help="Fixup file(s), we allow multiple")
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parser.add_argument("-i", "--include", nargs=1, required=True,
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help="Generate include file for the build system")
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parser.add_argument("-k", "--keyvalue", nargs=1, required=True,
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help="Generate config file for the build system")
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parser.add_argument("--old-alias-names", action='store_true',
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help="Generate aliases also in the old way, without "
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"compatibility information in their labels")
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return parser.parse_args()
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def main():
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args = parse_arguments()
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enable_old_alias_names(args.old_alias_names)
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dts = load_and_parse_dts(args.dts[0])
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# build up useful lists
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get_reduced(dts['/'], '/')
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get_phandles(dts['/'], '/', {})
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get_aliases(dts['/'])
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get_chosen(dts['/'])
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(extract.globals.bindings, extract.globals.bus_bindings,
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extract.globals.bindings_compat) = load_yaml_descriptions(dts, args.yaml)
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defs = generate_node_definitions()
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# generate config and include file
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generate_keyvalue_file(args.keyvalue[0])
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generate_include_file(args.include[0], args.fixup)
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if __name__ == '__main__':
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main()
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