qmk_firmware/lib/python/qmk/info.py

"""Functions that help us generate and use info.json files.
"""
from glob import glob
from pathlib import Path

import jsonschema
from dotty_dict import dotty
from milc import cli

from qmk.constants import CHIBIOS_PROCESSORS, LUFA_PROCESSORS, VUSB_PROCESSORS
from qmk.c_parse import find_layouts, parse_config_h_file
from qmk.json_schema import deep_update, json_load, validate
from qmk.keyboard import config_h, rules_mk
from qmk.keymap import list_keymaps, locate_keymap
from qmk.commands import parse_configurator_json
from qmk.makefile import parse_rules_mk_file
from qmk.math import compute

true_values = ['1', 'on', 'yes']
false_values = ['0', 'off', 'no']


def _valid_community_layout(layout):
    """Validate that a declared community list exists
    """
    return (Path('layouts/default') / layout).exists()


def _remove_newlines_from_labels(layouts):
    for layout_name, layout_json in layouts.items():
        for key in layout_json['layout']:
            if '\n' in key['label']:
                key['label'] = key['label'].split('\n')[0]


def info_json(keyboard):
    """Generate the info.json data for a specific keyboard.
    """
    cur_dir = Path('keyboards')
    root_rules_mk = parse_rules_mk_file(cur_dir / keyboard / 'rules.mk')

    if 'DEFAULT_FOLDER' in root_rules_mk:
        keyboard = root_rules_mk['DEFAULT_FOLDER']

    info_data = {
        'keyboard_name': str(keyboard),
        'keyboard_folder': str(keyboard),
        'keymaps': {},
        'layouts': {},
        'parse_errors': [],
        'parse_warnings': [],
        'maintainer': 'qmk',
    }

    # Populate the list of JSON keymaps
    for keymap in list_keymaps(keyboard, c=False, fullpath=True):
        info_data['keymaps'][keymap.name] = {'url': f'https://raw.githubusercontent.com/qmk/qmk_firmware/master/{keymap}/keymap.json'}

    # Populate layout data
    layouts, aliases = _search_keyboard_h(keyboard)

    if aliases:
        info_data['layout_aliases'] = aliases

    for layout_name, layout_json in layouts.items():
        if not layout_name.startswith('LAYOUT_kc'):
            layout_json['c_macro'] = True
            info_data['layouts'][layout_name] = layout_json

    # Merge in the data from info.json, config.h, and rules.mk
    info_data = merge_info_jsons(keyboard, info_data)
    info_data = _process_defaults(info_data)
    info_data = _extract_rules_mk(info_data, rules_mk(str(keyboard)))
    info_data = _extract_config_h(info_data, config_h(str(keyboard)))

    # Ensure that we have matrix row and column counts
    info_data = _matrix_size(info_data)

    # Validate against the jsonschema
    try:
        validate(info_data, 'qmk.api.keyboard.v1')

    except jsonschema.ValidationError as e:
        json_path = '.'.join([str(p) for p in e.absolute_path])
        cli.log.error('Invalid API data: %s: %s: %s', keyboard, json_path, e.message)
        exit(1)

    # Make sure we have at least one layout
    if not info_data.get('layouts'):
        _find_missing_layouts(info_data, keyboard)

    if not info_data.get('layouts'):
        _log_error(info_data, 'No LAYOUTs defined! Need at least one layout defined in the keyboard.h or info.json.')

    # Filter out any non-existing community layouts
    for layout in info_data.get('community_layouts', []):
        if not _valid_community_layout(layout):
            # Ignore layout from future checks
            info_data['community_layouts'].remove(layout)
            _log_error(info_data, 'Claims to support a community layout that does not exist: %s' % (layout))

    # Make sure we supply layout macros for the community layouts we claim to support
    for layout in info_data.get('community_layouts', []):
        layout_name = 'LAYOUT_' + layout
        if layout_name not in info_data.get('layouts', {}) and layout_name not in info_data.get('layout_aliases', {}):
            _log_error(info_data, 'Claims to support community layout %s but no %s() macro found' % (layout, layout_name))

    # Check that the reported matrix size is consistent with the actual matrix size
    _check_matrix(info_data)

    # Remove newline characters from layout labels
    _remove_newlines_from_labels(layouts)

    return info_data


def _extract_features(info_data, rules):
    """Find all the features enabled in rules.mk.
    """
    # Special handling for bootmagic which also supports a "lite" mode.
    if rules.get('BOOTMAGIC_ENABLE') == 'lite':
        rules['BOOTMAGIC_LITE_ENABLE'] = 'on'
        del rules['BOOTMAGIC_ENABLE']
    if rules.get('BOOTMAGIC_ENABLE') == 'full':
        rules['BOOTMAGIC_ENABLE'] = 'on'

    # Process the rest of the rules as booleans
    for key, value in rules.items():
        if key.endswith('_ENABLE'):
            key = '_'.join(key.split('_')[:-1]).lower()
            value = True if value.lower() in true_values else False if value.lower() in false_values else value

            if 'config_h_features' not in info_data:
                info_data['config_h_features'] = {}

            if 'features' not in info_data:
                info_data['features'] = {}

            if key in info_data['features']:
                _log_warning(info_data, 'Feature %s is specified in both info.json and rules.mk, the rules.mk value wins.' % (key,))

            info_data['features'][key] = value
            info_data['config_h_features'][key] = value

    return info_data


def _pin_name(pin):
    """Returns the proper representation for a pin.
    """
    pin = pin.strip()

    if not pin:
        return None

    elif pin.isdigit():
        return int(pin)

    elif pin == 'NO_PIN':
        return None

    return pin


def _extract_pins(pins):
    """Returns a list of pins from a comma separated string of pins.
    """
    return [_pin_name(pin) for pin in pins.split(',')]


def _extract_direct_matrix(direct_pins):
    """
    """
    direct_pin_array = []

    while direct_pins[-1] != '}':
        direct_pins = direct_pins[:-1]

    for row in direct_pins.split('},{'):
        if row.startswith('{'):
            row = row[1:]

        if row.endswith('}'):
            row = row[:-1]

        direct_pin_array.append([])

        for pin in row.split(','):
            if pin == 'NO_PIN':
                pin = None

            direct_pin_array[-1].append(pin)

    return direct_pin_array


def _extract_audio(info_data, config_c):
    """Populate data about the audio configuration
    """
    audio_pins = []

    for pin in 'B5', 'B6', 'B7', 'C4', 'C5', 'C6':
        if config_c.get(f'{pin}_AUDIO'):
            audio_pins.append(pin)

    if audio_pins:
        info_data['audio'] = {'pins': audio_pins}


def _extract_split_main(info_data, config_c):
    """Populate data about the split configuration
    """
    # Figure out how the main half is determined
    if config_c.get('SPLIT_HAND_PIN') is True:
        if 'split' not in info_data:
            info_data['split'] = {}

        if 'main' in info_data['split']:
            _log_warning(info_data, 'Split main hand is specified in both config.h (SPLIT_HAND_PIN) and info.json (split.main) (Value: %s), the config.h value wins.' % info_data['split']['main'])

        info_data['split']['main'] = 'pin'

    if config_c.get('SPLIT_HAND_MATRIX_GRID'):
        if 'split' not in info_data:
            info_data['split'] = {}

        if 'main' in info_data['split']:
            _log_warning(info_data, 'Split main hand is specified in both config.h (SPLIT_HAND_MATRIX_GRID) and info.json (split.main) (Value: %s), the config.h value wins.' % info_data['split']['main'])

        info_data['split']['main'] = 'matrix_grid'
        info_data['split']['matrix_grid'] = _extract_pins(config_c['SPLIT_HAND_MATRIX_GRID'])

    if config_c.get('EE_HANDS') is True:
        if 'split' not in info_data:
            info_data['split'] = {}

        if 'main' in info_data['split']:
            _log_warning(info_data, 'Split main hand is specified in both config.h (EE_HANDS) and info.json (split.main) (Value: %s), the config.h value wins.' % info_data['split']['main'])

        info_data['split']['main'] = 'eeprom'

    if config_c.get('MASTER_RIGHT') is True:
        if 'split' not in info_data:
            info_data['split'] = {}

        if 'main' in info_data['split']:
            _log_warning(info_data, 'Split main hand is specified in both config.h (MASTER_RIGHT) and info.json (split.main) (Value: %s), the config.h value wins.' % info_data['split']['main'])

        info_data['split']['main'] = 'right'

    if config_c.get('MASTER_LEFT') is True:
        if 'split' not in info_data:
            info_data['split'] = {}

        if 'main' in info_data['split']:
            _log_warning(info_data, 'Split main hand is specified in both config.h (MASTER_LEFT) and info.json (split.main) (Value: %s), the config.h value wins.' % info_data['split']['main'])

        info_data['split']['main'] = 'left'


def _extract_split_transport(info_data, config_c):
    # Figure out the transport method
    if config_c.get('USE_I2C') is True:
        if 'split' not in info_data:
            info_data['split'] = {}

        if 'transport' not in info_data['split']:
            info_data['split']['transport'] = {}

        if 'protocol' in info_data['split']['transport']:
            _log_warning(info_data, 'Split transport is specified in both config.h (USE_I2C) and info.json (split.transport.protocol) (Value: %s), the config.h value wins.' % info_data['split']['transport'])

        info_data['split']['transport']['protocol'] = 'i2c'

    # Ignore transport defaults if "SPLIT_KEYBOARD" is unset
    elif 'enabled' in info_data.get('split', {}):
        if 'split' not in info_data:
            info_data['split'] = {}

        if 'transport' not in info_data['split']:
            info_data['split']['transport'] = {}

        if 'protocol' not in info_data['split']['transport']:
            info_data['split']['transport']['protocol'] = 'serial'


def _extract_split_right_pins(info_data, config_c):
    # Figure out the right half matrix pins
    row_pins = config_c.get('MATRIX_ROW_PINS_RIGHT', '').replace('{', '').replace('}', '').strip()
    col_pins = config_c.get('MATRIX_COL_PINS_RIGHT', '').replace('{', '').replace('}', '').strip()
    unused_pin_text = config_c.get('UNUSED_PINS_RIGHT')
    unused_pins = unused_pin_text.replace('{', '').replace('}', '').strip() if isinstance(unused_pin_text, str) else None
    direct_pins = config_c.get('DIRECT_PINS_RIGHT', '').replace(' ', '')[1:-1]

    if row_pins and col_pins:
        if info_data.get('split', {}).get('matrix_pins', {}).get('right') in info_data:
            _log_warning(info_data, 'Right hand matrix data is specified in both info.json and config.h, the config.h values win.')

        if 'split' not in info_data:
            info_data['split'] = {}

        if 'matrix_pins' not in info_data['split']:
            info_data['split']['matrix_pins'] = {}

        if 'right' not in info_data['split']['matrix_pins']:
            info_data['split']['matrix_pins']['right'] = {}

        info_data['split']['matrix_pins']['right'] = {
            'cols': _extract_pins(col_pins),
            'rows': _extract_pins(row_pins),
        }

    if direct_pins:
        if info_data.get('split', {}).get('matrix_pins', {}).get('right', {}):
            _log_warning(info_data, 'Right hand matrix data is specified in both info.json and config.h, the config.h values win.')

        if 'split' not in info_data:
            info_data['split'] = {}

        if 'matrix_pins' not in info_data['split']:
            info_data['split']['matrix_pins'] = {}

        if 'right' not in info_data['split']['matrix_pins']:
            info_data['split']['matrix_pins']['right'] = {}

        info_data['split']['matrix_pins']['right']['direct'] = _extract_direct_matrix(direct_pins)

    if unused_pins:
        if 'split' not in info_data:
            info_data['split'] = {}

        if 'matrix_pins' not in info_data['split']:
            info_data['split']['matrix_pins'] = {}

        if 'right' not in info_data['split']['matrix_pins']:
            info_data['split']['matrix_pins']['right'] = {}

        info_data['split']['matrix_pins']['right']['unused'] = _extract_pins(unused_pins)


def _extract_matrix_info(info_data, config_c):
    """Populate the matrix information.
    """
    row_pins = config_c.get('MATRIX_ROW_PINS', '').replace('{', '').replace('}', '').strip()
    col_pins = config_c.get('MATRIX_COL_PINS', '').replace('{', '').replace('}', '').strip()
    unused_pin_text = config_c.get('UNUSED_PINS')
    unused_pins = unused_pin_text.replace('{', '').replace('}', '').strip() if isinstance(unused_pin_text, str) else None
    direct_pins = config_c.get('DIRECT_PINS', '').replace(' ', '')[1:-1]
    info_snippet = {}

    if 'MATRIX_ROWS' in config_c and 'MATRIX_COLS' in config_c:
        if 'matrix_size' in info_data:
            _log_warning(info_data, 'Matrix size is specified in both info.json and config.h, the config.h values win.')

        info_data['matrix_size'] = {
            'cols': compute(config_c.get('MATRIX_COLS', '0')),
            'rows': compute(config_c.get('MATRIX_ROWS', '0')),
        }

    if row_pins and col_pins:
        if 'matrix_pins' in info_data and 'cols' in info_data['matrix_pins'] and 'rows' in info_data['matrix_pins']:
            _log_warning(info_data, 'Matrix pins are specified in both info.json and config.h, the config.h values win.')

        info_snippet['cols'] = _extract_pins(col_pins)
        info_snippet['rows'] = _extract_pins(row_pins)

    if direct_pins:
        if 'matrix_pins' in info_data and 'direct' in info_data['matrix_pins']:
            _log_warning(info_data, 'Direct pins are specified in both info.json and config.h, the config.h values win.')

        info_snippet['direct'] = _extract_direct_matrix(direct_pins)

    if unused_pins:
        if 'matrix_pins' not in info_data:
            info_data['matrix_pins'] = {}

        info_snippet['unused'] = _extract_pins(unused_pins)

    if config_c.get('CUSTOM_MATRIX', 'no') != 'no':
        if 'matrix_pins' in info_data and 'custom' in info_data['matrix_pins']:
            _log_warning(info_data, 'Custom Matrix is specified in both info.json and config.h, the config.h values win.')

        info_snippet['custom'] = True

        if config_c['CUSTOM_MATRIX'] == 'lite':
            info_snippet['custom_lite'] = True

    if info_snippet:
        info_data['matrix_pins'] = info_snippet

    return info_data


# TODO: kill off usb.device_ver in favor of usb.device_version
def _extract_device_version(info_data):
    if info_data.get('usb'):
        if info_data['usb'].get('device_version') and not info_data['usb'].get('device_ver'):
            (major, minor, revision) = info_data['usb']['device_version'].split('.', 3)
            info_data['usb']['device_ver'] = f'0x{major.zfill(2)}{minor}{revision}'
        if not info_data['usb'].get('device_version') and info_data['usb'].get('device_ver'):
            major = int(info_data['usb']['device_ver'][2:4])
            minor = int(info_data['usb']['device_ver'][4])
            revision = int(info_data['usb']['device_ver'][5])
            info_data['usb']['device_version'] = f'{major}.{minor}.{revision}'


def _extract_config_h(info_data, config_c):
    """Pull some keyboard information from existing config.h files
    """
    # Pull in data from the json map
    dotty_info = dotty(info_data)
    info_config_map = json_load(Path('data/mappings/info_config.json'))

    for config_key, info_dict in info_config_map.items():
        info_key = info_dict['info_key']
        key_type = info_dict.get('value_type', 'raw')

        try:
            if config_key in config_c and info_dict.get('to_json', True):
                if dotty_info.get(info_key) and info_dict.get('warn_duplicate', True):
                    _log_warning(info_data, '%s in config.h is overwriting %s in info.json' % (config_key, info_key))

                if key_type.startswith('array'):
                    if '.' in key_type:
                        key_type, array_type = key_type.split('.', 1)
                    else:
                        array_type = None

                    config_value = config_c[config_key].replace('{', '').replace('}', '').strip()

                    if array_type == 'int':
                        dotty_info[info_key] = list(map(int, config_value.split(',')))
                    else:
                        dotty_info[info_key] = config_value.split(',')

                elif key_type == 'bool':
                    dotty_info[info_key] = config_c[config_key] in true_values

                elif key_type == 'hex':
                    dotty_info[info_key] = '0x' + config_c[config_key][2:].upper()

                elif key_type == 'list':
                    dotty_info[info_key] = config_c[config_key].split()

                elif key_type == 'int':
                    dotty_info[info_key] = int(config_c[config_key])

                elif key_type == 'str':
                    dotty_info[info_key] = config_c[config_key].strip('"')

                elif key_type == 'bcd_version':
                    major = int(config_c[config_key][2:4])
                    minor = int(config_c[config_key][4])
                    revision = int(config_c[config_key][5])

                    dotty_info[info_key] = f'{major}.{minor}.{revision}'

                else:
                    dotty_info[info_key] = config_c[config_key]

        except Exception as e:
            _log_warning(info_data, f'{config_key}->{info_key}: {e}')

    info_data.update(dotty_info)

    # Pull data that easily can't be mapped in json
    _extract_matrix_info(info_data, config_c)
    _extract_audio(info_data, config_c)
    _extract_split_main(info_data, config_c)
    _extract_split_transport(info_data, config_c)
    _extract_split_right_pins(info_data, config_c)
    _extract_device_version(info_data)

    return info_data


def _process_defaults(info_data):
    """Process any additional defaults based on currently discovered information
    """
    defaults_map = json_load(Path('data/mappings/defaults.json'))
    for default_type in defaults_map.keys():
        thing_map = defaults_map[default_type]
        if default_type in info_data:
            for key, value in thing_map.get(info_data[default_type], {}).items():
                info_data[key] = value
    return info_data


def _extract_rules_mk(info_data, rules):
    """Pull some keyboard information from existing rules.mk files
    """
    info_data['processor'] = rules.get('MCU', info_data.get('processor', 'atmega32u4'))

    if info_data['processor'] in CHIBIOS_PROCESSORS:
        arm_processor_rules(info_data, rules)

    elif info_data['processor'] in LUFA_PROCESSORS + VUSB_PROCESSORS:
        avr_processor_rules(info_data, rules)

    else:
        cli.log.warning("%s: Unknown MCU: %s" % (info_data['keyboard_folder'], info_data['processor']))
        unknown_processor_rules(info_data, rules)

    # Pull in data from the json map
    dotty_info = dotty(info_data)
    info_rules_map = json_load(Path('data/mappings/info_rules.json'))

    for rules_key, info_dict in info_rules_map.items():
        info_key = info_dict['info_key']
        key_type = info_dict.get('value_type', 'raw')

        try:
            if rules_key in rules and info_dict.get('to_json', True):
                if dotty_info.get(info_key) and info_dict.get('warn_duplicate', True):
                    _log_warning(info_data, '%s in rules.mk is overwriting %s in info.json' % (rules_key, info_key))

                if key_type.startswith('array'):
                    if '.' in key_type:
                        key_type, array_type = key_type.split('.', 1)
                    else:
                        array_type = None

                    rules_value = rules[rules_key].replace('{', '').replace('}', '').strip()

                    if array_type == 'int':
                        dotty_info[info_key] = list(map(int, rules_value.split(',')))
                    else:
                        dotty_info[info_key] = rules_value.split(',')

                elif key_type == 'list':
                    dotty_info[info_key] = rules[rules_key].split()

                elif key_type == 'bool':
                    dotty_info[info_key] = rules[rules_key] in true_values

                elif key_type == 'hex':
                    dotty_info[info_key] = '0x' + rules[rules_key][2:].upper()

                elif key_type == 'int':
                    dotty_info[info_key] = int(rules[rules_key])

                elif key_type == 'str':
                    dotty_info[info_key] = rules[rules_key].strip('"')

                else:
                    dotty_info[info_key] = rules[rules_key]

        except Exception as e:
            _log_warning(info_data, f'{rules_key}->{info_key}: {e}')

    info_data.update(dotty_info)

    # Merge in config values that can't be easily mapped
    _extract_features(info_data, rules)

    return info_data


def _matrix_size(info_data):
    """Add info_data['matrix_size'] if it doesn't exist.
    """
    if 'matrix_size' not in info_data and 'matrix_pins' in info_data:
        info_data['matrix_size'] = {}

        if 'direct' in info_data['matrix_pins']:
            info_data['matrix_size']['cols'] = len(info_data['matrix_pins']['direct'][0])
            info_data['matrix_size']['rows'] = len(info_data['matrix_pins']['direct'])
        elif 'cols' in info_data['matrix_pins'] and 'rows' in info_data['matrix_pins']:
            info_data['matrix_size']['cols'] = len(info_data['matrix_pins']['cols'])
            info_data['matrix_size']['rows'] = len(info_data['matrix_pins']['rows'])

        # Assumption of split common
        if 'split' in info_data:
            if info_data['split'].get('enabled', False):
                info_data['matrix_size']['rows'] *= 2

    return info_data


def _check_matrix(info_data):
    """Check the matrix to ensure that row/column count is consistent.
    """
    if 'matrix_pins' in info_data and 'matrix_size' in info_data:
        actual_col_count = info_data['matrix_size'].get('cols', 0)
        actual_row_count = info_data['matrix_size'].get('rows', 0)
        col_count = row_count = 0

        if 'direct' in info_data['matrix_pins']:
            col_count = len(info_data['matrix_pins']['direct'][0])
            row_count = len(info_data['matrix_pins']['direct'])
        elif 'cols' in info_data['matrix_pins'] and 'rows' in info_data['matrix_pins']:
            col_count = len(info_data['matrix_pins']['cols'])
            row_count = len(info_data['matrix_pins']['rows'])

        if col_count != actual_col_count and col_count != (actual_col_count / 2):
            # FIXME: once we can we should detect if split is enabled to do the actual_col_count/2 check.
            _log_error(info_data, f'MATRIX_COLS is inconsistent with the size of MATRIX_COL_PINS: {col_count} != {actual_col_count}')

        if row_count != actual_row_count and row_count != (actual_row_count / 2):
            # FIXME: once we can we should detect if split is enabled to do the actual_row_count/2 check.
            _log_error(info_data, f'MATRIX_ROWS is inconsistent with the size of MATRIX_ROW_PINS: {row_count} != {actual_row_count}')


def _search_keyboard_h(keyboard):
    keyboard = Path(keyboard)
    current_path = Path('keyboards/')
    aliases = {}
    layouts = {}

    for directory in keyboard.parts:
        current_path = current_path / directory
        keyboard_h = '%s.h' % (directory,)
        keyboard_h_path = current_path / keyboard_h
        if keyboard_h_path.exists():
            new_layouts, new_aliases = find_layouts(keyboard_h_path)
            layouts.update(new_layouts)

            for alias, alias_text in new_aliases.items():
                if alias_text in layouts:
                    aliases[alias] = alias_text

    return layouts, aliases


def _find_missing_layouts(info_data, keyboard):
    """Looks for layout macros when they aren't found other places.

    If we don't find any layouts from info.json or keyboard.h we widen our search. This is error prone which is why we want to encourage people to follow the standard above.
    """
    _log_warning(info_data, '%s: Falling back to searching for KEYMAP/LAYOUT macros.' % (keyboard))

    for file in glob('keyboards/%s/*.h' % keyboard):
        these_layouts, these_aliases = find_layouts(file)

        if these_layouts:
            for layout_name, layout_json in these_layouts.items():
                if not layout_name.startswith('LAYOUT_kc'):
                    layout_json['c_macro'] = True
                    info_data['layouts'][layout_name] = layout_json

        for alias, alias_text in these_aliases.items():
            if alias_text in these_layouts:
                if 'layout_aliases' not in info_data:
                    info_data['layout_aliases'] = {}

                info_data['layout_aliases'][alias] = alias_text


def _log_error(info_data, message):
    """Send an error message to both JSON and the log.
    """
    info_data['parse_errors'].append(message)
    cli.log.error('%s: %s', info_data.get('keyboard_folder', 'Unknown Keyboard!'), message)


def _log_warning(info_data, message):
    """Send a warning message to both JSON and the log.
    """
    info_data['parse_warnings'].append(message)
    cli.log.warning('%s: %s', info_data.get('keyboard_folder', 'Unknown Keyboard!'), message)


def arm_processor_rules(info_data, rules):
    """Setup the default info for an ARM board.
    """
    info_data['processor_type'] = 'arm'
    info_data['protocol'] = 'ChibiOS'

    if 'bootloader' not in info_data:
        info_data['bootloader'] = 'unknown'

    if 'STM32' in info_data['processor']:
        info_data['platform'] = 'STM32'
    elif 'MCU_SERIES' in rules:
        info_data['platform'] = rules['MCU_SERIES']
    elif 'ARM_ATSAM' in rules:
        info_data['platform'] = 'ARM_ATSAM'

    return info_data


def avr_processor_rules(info_data, rules):
    """Setup the default info for an AVR board.
    """
    info_data['processor_type'] = 'avr'
    info_data['platform'] = rules['ARCH'] if 'ARCH' in rules else 'unknown'
    info_data['protocol'] = 'V-USB' if rules.get('MCU') in VUSB_PROCESSORS else 'LUFA'

    if 'bootloader' not in info_data:
        info_data['bootloader'] = 'atmel-dfu'

    # FIXME(fauxpark/anyone): Eventually we should detect the protocol by looking at PROTOCOL inherited from mcu_selection.mk:
    # info_data['protocol'] = 'V-USB' if rules.get('PROTOCOL') == 'VUSB' else 'LUFA'

    return info_data


def unknown_processor_rules(info_data, rules):
    """Setup the default keyboard info for unknown boards.
    """
    info_data['bootloader'] = 'unknown'
    info_data['platform'] = 'unknown'
    info_data['processor'] = 'unknown'
    info_data['processor_type'] = 'unknown'
    info_data['protocol'] = 'unknown'

    return info_data


def merge_info_jsons(keyboard, info_data):
    """Return a merged copy of all the info.json files for a keyboard.
    """
    for info_file in find_info_json(keyboard):
        # Load and validate the JSON data
        new_info_data = json_load(info_file)

        if not isinstance(new_info_data, dict):
            _log_error(info_data, "Invalid file %s, root object should be a dictionary." % (str(info_file),))
            continue

        try:
            validate(new_info_data, 'qmk.keyboard.v1')
        except jsonschema.ValidationError as e:
            json_path = '.'.join([str(p) for p in e.absolute_path])
            cli.log.error('Not including data from file: %s', info_file)
            cli.log.error('\t%s: %s', json_path, e.message)
            continue

        # Merge layout data in
        if 'layout_aliases' in new_info_data:
            info_data['layout_aliases'] = {**info_data.get('layout_aliases', {}), **new_info_data['layout_aliases']}
            del new_info_data['layout_aliases']

        for layout_name, layout in new_info_data.get('layouts', {}).items():
            if layout_name in info_data.get('layout_aliases', {}):
                _log_warning(info_data, f"info.json uses alias name {layout_name} instead of {info_data['layout_aliases'][layout_name]}")
                layout_name = info_data['layout_aliases'][layout_name]

            if layout_name in info_data['layouts']:
                if len(info_data['layouts'][layout_name]['layout']) != len(layout['layout']):
                    msg = 'Number of keys for %s does not match! info.json specifies %d keys, C macro specifies %d'
                    _log_error(info_data, msg % (layout_name, len(layout['layout']), len(info_data['layouts'][layout_name]['layout'])))
                else:
                    for new_key, existing_key in zip(layout['layout'], info_data['layouts'][layout_name]['layout']):
                        existing_key.update(new_key)
            else:
                layout['c_macro'] = False
                info_data['layouts'][layout_name] = layout

        # Update info_data with the new data
        if 'layouts' in new_info_data:
            del new_info_data['layouts']

        deep_update(info_data, new_info_data)

    return info_data


def find_info_json(keyboard):
    """Finds all the info.json files associated with a keyboard.
    """
    # Find the most specific first
    base_path = Path('keyboards')
    keyboard_path = base_path / keyboard
    keyboard_parent = keyboard_path.parent
    info_jsons = [keyboard_path / 'info.json']

    # Add DEFAULT_FOLDER before parents, if present
    rules = rules_mk(keyboard)
    if 'DEFAULT_FOLDER' in rules:
        info_jsons.append(Path(rules['DEFAULT_FOLDER']) / 'info.json')

    # Add in parent folders for least specific
    for _ in range(5):
        if keyboard_parent == base_path:
            break
        info_jsons.append(keyboard_parent / 'info.json')
        keyboard_parent = keyboard_parent.parent

    # Return a list of the info.json files that actually exist
    return [info_json for info_json in info_jsons if info_json.exists()]


def keymap_json_config(keyboard, keymap):
    """Extract keymap level config
    """
    keymap_folder = locate_keymap(keyboard, keymap).parent

    km_info_json = parse_configurator_json(keymap_folder / 'keymap.json')
    return km_info_json.get('config', {})


def keymap_json(keyboard, keymap):
    """Generate the info.json data for a specific keymap.
    """
    keymap_folder = locate_keymap(keyboard, keymap).parent

    # Files to scan
    keymap_config = keymap_folder / 'config.h'
    keymap_rules = keymap_folder / 'rules.mk'
    keymap_file = keymap_folder / 'keymap.json'

    # Build the info.json file
    kb_info_json = info_json(keyboard)

    # Merge in the data from keymap.json
    km_info_json = keymap_json_config(keyboard, keymap) if keymap_file.exists() else {}
    deep_update(kb_info_json, km_info_json)

    # Merge in the data from config.h, and rules.mk
    _extract_rules_mk(kb_info_json, parse_rules_mk_file(keymap_rules))
    _extract_config_h(kb_info_json, parse_config_h_file(keymap_config))

    return kb_info_json