diff --git a/tools/genboardscfg.py b/tools/genboardscfg.py
new file mode 100755
index 0000000000000000000000000000000000000000..734d90b5e58ad0c16993490d1a1755e7dc8dcddc
--- /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()