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| -rwxr-xr-x | tools/genboardscfg.py | 504 |
1 files changed, 504 insertions, 0 deletions
diff --git a/tools/genboardscfg.py b/tools/genboardscfg.py new file mode 100755 index 0000000..734d90b --- /dev/null +++ b/tools/genboardscfg.py @@ -0,0 +1,504 @@ +#!/usr/bin/env python +# +# Author: Masahiro Yamada <yamada.m@jp.panasonic.com> +# +# SPDX-License-Identifier: GPL-2.0+ +# + +""" +Converter from Kconfig and MAINTAINERS to boards.cfg + +Run 'tools/genboardscfg.py' to create boards.cfg file. + +Run 'tools/genboardscfg.py -h' for available options. +""" + +import errno +import fnmatch +import glob +import optparse +import os +import re +import shutil +import subprocess +import sys +import tempfile +import time + +BOARD_FILE = 'boards.cfg' +CONFIG_DIR = 'configs' +REFORMAT_CMD = [os.path.join('tools', 'reformat.py'), + '-i', '-d', '-', '-s', '8'] +SHOW_GNU_MAKE = 'scripts/show-gnu-make' +SLEEP_TIME=0.03 + +COMMENT_BLOCK = '''# +# List of boards +# Automatically generated by %s: don't edit +# +# Status, Arch, CPU(:SPLCPU), SoC, Vendor, Board, Target, Options, Maintainers + +''' % __file__ + +### helper functions ### +def get_terminal_columns(): + """Get the width of the terminal. + + Returns: + The width of the terminal, or zero if the stdout is not + associated with tty. + """ + try: + return shutil.get_terminal_size().columns # Python 3.3~ + except AttributeError: + import fcntl + import termios + import struct + arg = struct.pack('hhhh', 0, 0, 0, 0) + try: + ret = fcntl.ioctl(sys.stdout.fileno(), termios.TIOCGWINSZ, arg) + except IOError as exception: + if exception.errno != errno.ENOTTY: + raise + # If 'Inappropriate ioctl for device' error occurs, + # stdout is probably redirected. Return 0. + return 0 + return struct.unpack('hhhh', ret)[1] + +def get_devnull(): + """Get the file object of '/dev/null' device.""" + try: + devnull = subprocess.DEVNULL # py3k + except AttributeError: + devnull = open(os.devnull, 'wb') + return devnull + +def check_top_directory(): + """Exit if we are not at the top of source directory.""" + for f in ('README', 'Licenses'): + if not os.path.exists(f): + print >> sys.stderr, 'Please run at the top of source directory.' + sys.exit(1) + +def get_make_cmd(): + """Get the command name of GNU Make.""" + process = subprocess.Popen([SHOW_GNU_MAKE], stdout=subprocess.PIPE) + ret = process.communicate() + if process.returncode: + print >> sys.stderr, 'GNU Make not found' + sys.exit(1) + return ret[0].rstrip() + +### classes ### +class MaintainersDatabase: + + """The database of board status and maintainers.""" + + def __init__(self): + """Create an empty database.""" + self.database = {} + + def get_status(self, target): + """Return the status of the given board. + + Returns: + Either 'Active' or 'Orphan' + """ + tmp = self.database[target][0] + if tmp.startswith('Maintained'): + return 'Active' + elif tmp.startswith('Orphan'): + return 'Orphan' + else: + print >> sys.stderr, 'Error: %s: unknown status' % tmp + + def get_maintainers(self, target): + """Return the maintainers of the given board. + + If the board has two or more maintainers, they are separated + with colons. + """ + return ':'.join(self.database[target][1]) + + def parse_file(self, file): + """Parse the given MAINTAINERS file. + + This method parses MAINTAINERS and add board status and + maintainers information to the database. + + Arguments: + file: MAINTAINERS file to be parsed + """ + targets = [] + maintainers = [] + status = '-' + for line in open(file): + tag, rest = line[:2], line[2:].strip() + if tag == 'M:': + maintainers.append(rest) + elif tag == 'F:': + # expand wildcard and filter by 'configs/*_defconfig' + for f in glob.glob(rest): + front, match, rear = f.partition('configs/') + if not front and match: + front, match, rear = rear.rpartition('_defconfig') + if match and not rear: + targets.append(front) + elif tag == 'S:': + status = rest + elif line == '\n' and targets: + for target in targets: + self.database[target] = (status, maintainers) + targets = [] + maintainers = [] + status = '-' + if targets: + for target in targets: + self.database[target] = (status, maintainers) + +class DotConfigParser: + + """A parser of .config file. + + Each line of the output should have the form of: + Status, Arch, CPU, SoC, Vendor, Board, Target, Options, Maintainers + Most of them are extracted from .config file. + MAINTAINERS files are also consulted for Status and Maintainers fields. + """ + + re_arch = re.compile(r'CONFIG_SYS_ARCH="(.*)"') + re_cpu = re.compile(r'CONFIG_SYS_CPU="(.*)"') + re_soc = re.compile(r'CONFIG_SYS_SOC="(.*)"') + re_vendor = re.compile(r'CONFIG_SYS_VENDOR="(.*)"') + re_board = re.compile(r'CONFIG_SYS_BOARD="(.*)"') + re_config = re.compile(r'CONFIG_SYS_CONFIG_NAME="(.*)"') + re_options = re.compile(r'CONFIG_SYS_EXTRA_OPTIONS="(.*)"') + re_list = (('arch', re_arch), ('cpu', re_cpu), ('soc', re_soc), + ('vendor', re_vendor), ('board', re_board), + ('config', re_config), ('options', re_options)) + must_fields = ('arch', 'config') + + def __init__(self, build_dir, output, maintainers_database): + """Create a new .config perser. + + Arguments: + build_dir: Build directory where .config is located + output: File object which the result is written to + maintainers_database: An instance of class MaintainersDatabase + """ + self.dotconfig = os.path.join(build_dir, '.config') + self.output = output + self.database = maintainers_database + + def parse(self, defconfig): + """Parse .config file and output one-line database for the given board. + + Arguments: + defconfig: Board (defconfig) name + """ + fields = {} + for line in open(self.dotconfig): + if not line.startswith('CONFIG_SYS_'): + continue + for (key, pattern) in self.re_list: + m = pattern.match(line) + if m and m.group(1): + fields[key] = m.group(1) + break + + # sanity check of '.config' file + for field in self.must_fields: + if not field in fields: + print >> sys.stderr, 'Error: %s is not defined in %s' % \ + (field, defconfig) + sys.exit(1) + + # fix-up for aarch64 and tegra + if fields['arch'] == 'arm' and 'cpu' in fields: + if fields['cpu'] == 'armv8': + fields['arch'] = 'aarch64' + if 'soc' in fields and re.match('tegra[0-9]*$', fields['soc']): + fields['cpu'] += ':arm720t' + + target, match, rear = defconfig.partition('_defconfig') + assert match and not rear, \ + '%s : invalid defconfig file name' % defconfig + + fields['status'] = self.database.get_status(target) + fields['maintainers'] = self.database.get_maintainers(target) + + if 'options' in fields: + options = fields['config'] + ':' + \ + fields['options'].replace(r'\"', '"') + elif fields['config'] != target: + options = fields['config'] + else: + options = '-' + + self.output.write((' '.join(['%s'] * 9) + '\n') % + (fields['status'], + fields['arch'], + fields.get('cpu', '-'), + fields.get('soc', '-'), + fields.get('vendor', '-'), + fields.get('board', '-'), + target, + options, + fields['maintainers'])) + +class Slot: + + """A slot to store a subprocess. + + Each instance of this class handles one subprocess. + This class is useful to control multiple processes + for faster processing. + """ + + def __init__(self, output, maintainers_database, devnull, make_cmd): + """Create a new slot. + + Arguments: + output: File object which the result is written to + maintainers_database: An instance of class MaintainersDatabase + """ + self.occupied = False + self.build_dir = tempfile.mkdtemp() + self.devnull = devnull + self.make_cmd = make_cmd + self.parser = DotConfigParser(self.build_dir, output, + maintainers_database) + + def __del__(self): + """Delete the working directory""" + shutil.rmtree(self.build_dir) + + def add(self, defconfig): + """Add a new subprocess to the slot. + + Fails if the slot is occupied, that is, the current subprocess + is still running. + + Arguments: + defconfig: Board (defconfig) name + + Returns: + Return True on success or False on fail + """ + if self.occupied: + return False + o = 'O=' + self.build_dir + self.ps = subprocess.Popen([self.make_cmd, o, defconfig], + stdout=self.devnull) + self.defconfig = defconfig + self.occupied = True + return True + + def poll(self): + """Check if the subprocess is running and invoke the .config + parser if the subprocess is terminated. + + Returns: + Return True if the subprocess is terminated, False otherwise + """ + if not self.occupied: + return True + if self.ps.poll() == None: + return False + self.parser.parse(self.defconfig) + self.occupied = False + return True + +class Slots: + + """Controller of the array of subprocess slots.""" + + def __init__(self, jobs, output, maintainers_database): + """Create a new slots controller. + + Arguments: + jobs: A number of slots to instantiate + output: File object which the result is written to + maintainers_database: An instance of class MaintainersDatabase + """ + self.slots = [] + devnull = get_devnull() + make_cmd = get_make_cmd() + for i in range(jobs): + self.slots.append(Slot(output, maintainers_database, + devnull, make_cmd)) + + def add(self, defconfig): + """Add a new subprocess if a vacant slot is available. + + Arguments: + defconfig: Board (defconfig) name + + Returns: + Return True on success or False on fail + """ + for slot in self.slots: + if slot.add(defconfig): + return True + return False + + def available(self): + """Check if there is a vacant slot. + + Returns: + Return True if a vacant slot is found, False if all slots are full + """ + for slot in self.slots: + if slot.poll(): + return True + return False + + def empty(self): + """Check if all slots are vacant. + + Returns: + Return True if all slots are vacant, False if at least one slot + is running + """ + ret = True + for slot in self.slots: + if not slot.poll(): + ret = False + return ret + +class Indicator: + + """A class to control the progress indicator.""" + + MIN_WIDTH = 15 + MAX_WIDTH = 70 + + def __init__(self, total): + """Create an instance. + + Arguments: + total: A number of boards + """ + self.total = total + self.cur = 0 + width = get_terminal_columns() + width = min(width, self.MAX_WIDTH) + width -= self.MIN_WIDTH + if width > 0: + self.enabled = True + else: + self.enabled = False + self.width = width + + def inc(self): + """Increment the counter and show the progress bar.""" + if not self.enabled: + return + self.cur += 1 + arrow_len = self.width * self.cur // self.total + msg = '%4d/%d [' % (self.cur, self.total) + msg += '=' * arrow_len + '>' + ' ' * (self.width - arrow_len) + ']' + sys.stdout.write('\r' + msg) + sys.stdout.flush() + +def __gen_boards_cfg(jobs): + """Generate boards.cfg file. + + Arguments: + jobs: The number of jobs to run simultaneously + + Note: + The incomplete boards.cfg is left over when an error (including + the termination by the keyboard interrupt) occurs on the halfway. + """ + check_top_directory() + print 'Generating %s ... (jobs: %d)' % (BOARD_FILE, jobs) + + # All the defconfig files to be processed + defconfigs = [] + for (dirpath, dirnames, filenames) in os.walk(CONFIG_DIR): + dirpath = dirpath[len(CONFIG_DIR) + 1:] + for filename in fnmatch.filter(filenames, '*_defconfig'): + defconfigs.append(os.path.join(dirpath, filename)) + + # Parse all the MAINTAINERS files + maintainers_database = MaintainersDatabase() + for (dirpath, dirnames, filenames) in os.walk('.'): + if 'MAINTAINERS' in filenames: + maintainers_database.parse_file(os.path.join(dirpath, + 'MAINTAINERS')) + + # Output lines should be piped into the reformat tool + reformat_process = subprocess.Popen(REFORMAT_CMD, stdin=subprocess.PIPE, + stdout=open(BOARD_FILE, 'w')) + pipe = reformat_process.stdin + pipe.write(COMMENT_BLOCK) + + indicator = Indicator(len(defconfigs)) + slots = Slots(jobs, pipe, maintainers_database) + + # Main loop to process defconfig files: + # Add a new subprocess into a vacant slot. + # Sleep if there is no available slot. + for defconfig in defconfigs: + while not slots.add(defconfig): + while not slots.available(): + # No available slot: sleep for a while + time.sleep(SLEEP_TIME) + indicator.inc() + + # wait until all the subprocesses finish + while not slots.empty(): + time.sleep(SLEEP_TIME) + print '' + + # wait until the reformat tool finishes + reformat_process.communicate() + if reformat_process.returncode != 0: + print >> sys.stderr, '"%s" failed' % REFORMAT_CMD[0] + sys.exit(1) + +def gen_boards_cfg(jobs): + """Generate boards.cfg file. + + The incomplete boards.cfg is deleted if an error (including + the termination by the keyboard interrupt) occurs on the halfway. + + Arguments: + jobs: The number of jobs to run simultaneously + """ + try: + __gen_boards_cfg(jobs) + except: + # We should remove incomplete boards.cfg + try: + os.remove(BOARD_FILE) + except OSError as exception: + # Ignore 'No such file or directory' error + if exception.errno != errno.ENOENT: + raise + raise + +def main(): + parser = optparse.OptionParser() + # Add options here + parser.add_option('-j', '--jobs', + help='the number of jobs to run simultaneously') + (options, args) = parser.parse_args() + if options.jobs: + try: + jobs = int(options.jobs) + except ValueError: + print >> sys.stderr, 'Option -j (--jobs) takes a number' + sys.exit(1) + else: + try: + jobs = int(subprocess.Popen(['getconf', '_NPROCESSORS_ONLN'], + stdout=subprocess.PIPE).communicate()[0]) + except (OSError, ValueError): + print 'info: failed to get the number of CPUs. Set jobs to 1' + jobs = 1 + gen_boards_cfg(jobs) + +if __name__ == '__main__': + main() |