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256126c294
This appears in boards.cfg but we want to remove it. Drop support for generating it and reading it. Detect an old boards.cfg file that has this field and regenerate it, to avoid problems. Instead, add the config name in that place. This fixes a subtle bug in the generation code, since it uses 'target' for the config name and then overwrites the value in scan() by setting params['target'] to the name of the defconfig. The defconfig name is not the same as the SYS_CONFIG_NAME variable. With this change, we still have the config name and it can be searched by buildman, e.g. with: buildman -nv sun5i Signed-off-by: Simon Glass <sjg@chromium.org> Reported-by: Tom Rini <trini@konsulko.com>
741 lines
23 KiB
Python
741 lines
23 KiB
Python
# SPDX-License-Identifier: GPL-2.0+
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# Copyright (c) 2012 The Chromium OS Authors.
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# Author: Simon Glass <sjg@chromium.org>
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# Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
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"""Maintains a list of boards and allows them to be selected"""
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from collections import OrderedDict
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import errno
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import fnmatch
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import glob
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import multiprocessing
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import os
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import re
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import sys
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import tempfile
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import time
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from buildman import board
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from buildman import kconfiglib
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### constant variables ###
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OUTPUT_FILE = 'boards.cfg'
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CONFIG_DIR = 'configs'
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SLEEP_TIME = 0.03
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COMMENT_BLOCK = f'''#
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# List of boards
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# Automatically generated by {__file__}: don't edit
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#
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# Status, Arch, CPU, SoC, Vendor, Board, Target, Config, Maintainers
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'''
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def try_remove(fname):
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"""Remove a file ignoring 'No such file or directory' error.
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Args:
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fname (str): Filename to remove
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Raises:
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OSError: output file exists but could not be removed
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"""
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try:
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os.remove(fname)
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except OSError as exception:
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# Ignore 'No such file or directory' error
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if exception.errno != errno.ENOENT:
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raise
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def output_is_new(output):
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"""Check if the output file is up to date.
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Looks at defconfig and Kconfig files to make sure none is newer than the
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output file. Also ensures that the boards.cfg does not mention any removed
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boards.
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Args:
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output (str): Filename to check
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Returns:
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True if the given output file exists and is newer than any of
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*_defconfig, MAINTAINERS and Kconfig*. False otherwise.
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Raises:
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OSError: output file exists but could not be opened
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"""
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# pylint: disable=too-many-branches
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try:
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ctime = os.path.getctime(output)
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except OSError as exception:
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if exception.errno == errno.ENOENT:
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# return False on 'No such file or directory' error
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return False
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raise
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for (dirpath, _, filenames) in os.walk(CONFIG_DIR):
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for filename in fnmatch.filter(filenames, '*_defconfig'):
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if fnmatch.fnmatch(filename, '.*'):
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continue
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filepath = os.path.join(dirpath, filename)
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if ctime < os.path.getctime(filepath):
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return False
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for (dirpath, _, filenames) in os.walk('.'):
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for filename in filenames:
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if (fnmatch.fnmatch(filename, '*~') or
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not fnmatch.fnmatch(filename, 'Kconfig*') and
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not filename == 'MAINTAINERS'):
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continue
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filepath = os.path.join(dirpath, filename)
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if ctime < os.path.getctime(filepath):
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return False
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# Detect a board that has been removed since the current board database
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# was generated
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with open(output, encoding="utf-8") as inf:
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for line in inf:
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if 'Options,' in line:
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return False
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if line[0] == '#' or line == '\n':
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continue
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defconfig = line.split()[6] + '_defconfig'
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if not os.path.exists(os.path.join(CONFIG_DIR, defconfig)):
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return False
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return True
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class Expr:
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"""A single regular expression for matching boards to build"""
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def __init__(self, expr):
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"""Set up a new Expr object.
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Args:
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expr (str): String cotaining regular expression to store
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"""
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self._expr = expr
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self._re = re.compile(expr)
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def matches(self, props):
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"""Check if any of the properties match the regular expression.
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Args:
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props (list of str): List of properties to check
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Returns:
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True if any of the properties match the regular expression
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"""
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for prop in props:
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if self._re.match(prop):
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return True
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return False
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def __str__(self):
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return self._expr
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class Term:
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"""A list of expressions each of which must match with properties.
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This provides a list of 'AND' expressions, meaning that each must
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match the board properties for that board to be built.
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"""
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def __init__(self):
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self._expr_list = []
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self._board_count = 0
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def add_expr(self, expr):
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"""Add an Expr object to the list to check.
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Args:
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expr (Expr): New Expr object to add to the list of those that must
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match for a board to be built.
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"""
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self._expr_list.append(Expr(expr))
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def __str__(self):
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"""Return some sort of useful string describing the term"""
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return '&'.join([str(expr) for expr in self._expr_list])
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def matches(self, props):
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"""Check if any of the properties match this term
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Each of the expressions in the term is checked. All must match.
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Args:
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props (list of str): List of properties to check
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Returns:
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True if all of the expressions in the Term match, else False
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"""
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for expr in self._expr_list:
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if not expr.matches(props):
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return False
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return True
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class KconfigScanner:
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"""Kconfig scanner."""
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### constant variable only used in this class ###
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_SYMBOL_TABLE = {
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'arch' : 'SYS_ARCH',
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'cpu' : 'SYS_CPU',
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'soc' : 'SYS_SOC',
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'vendor' : 'SYS_VENDOR',
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'board' : 'SYS_BOARD',
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'config' : 'SYS_CONFIG_NAME',
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# 'target' is added later
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}
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def __init__(self):
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"""Scan all the Kconfig files and create a Kconfig object."""
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# Define environment variables referenced from Kconfig
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os.environ['srctree'] = os.getcwd()
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os.environ['UBOOTVERSION'] = 'dummy'
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os.environ['KCONFIG_OBJDIR'] = ''
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self._tmpfile = None
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self._conf = kconfiglib.Kconfig(warn=False)
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def __del__(self):
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"""Delete a leftover temporary file before exit.
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The scan() method of this class creates a temporay file and deletes
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it on success. If scan() method throws an exception on the way,
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the temporary file might be left over. In that case, it should be
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deleted in this destructor.
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"""
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if self._tmpfile:
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try_remove(self._tmpfile)
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def scan(self, defconfig):
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"""Load a defconfig file to obtain board parameters.
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Args:
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defconfig (str): path to the defconfig file to be processed
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Returns:
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A dictionary of board parameters. It has a form of:
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{
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'arch': <arch_name>,
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'cpu': <cpu_name>,
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'soc': <soc_name>,
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'vendor': <vendor_name>,
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'board': <board_name>,
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'target': <target_name>,
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'config': <config_header_name>,
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}
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"""
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# strip special prefixes and save it in a temporary file
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outfd, self._tmpfile = tempfile.mkstemp()
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with os.fdopen(outfd, 'w') as outf:
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with open(defconfig, encoding='utf-8') as inf:
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for line in inf:
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colon = line.find(':CONFIG_')
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if colon == -1:
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outf.write(line)
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else:
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outf.write(line[colon + 1:])
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self._conf.load_config(self._tmpfile)
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try_remove(self._tmpfile)
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self._tmpfile = None
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params = {}
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# Get the value of CONFIG_SYS_ARCH, CONFIG_SYS_CPU, ... etc.
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# Set '-' if the value is empty.
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for key, symbol in list(self._SYMBOL_TABLE.items()):
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value = self._conf.syms.get(symbol).str_value
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if value:
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params[key] = value
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else:
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params[key] = '-'
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defconfig = os.path.basename(defconfig)
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params['target'], match, rear = defconfig.partition('_defconfig')
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assert match and not rear, f'{defconfig} : invalid defconfig'
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# fix-up for aarch64
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if params['arch'] == 'arm' and params['cpu'] == 'armv8':
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params['arch'] = 'aarch64'
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return params
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class MaintainersDatabase:
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"""The database of board status and maintainers.
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Properties:
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database: dict:
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key: Board-target name (e.g. 'snow')
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value: tuple:
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str: Board status (e.g. 'Active')
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str: List of maintainers, separated by :
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"""
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def __init__(self):
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"""Create an empty database."""
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self.database = {}
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def get_status(self, target):
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"""Return the status of the given board.
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The board status is generally either 'Active' or 'Orphan'.
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Display a warning message and return '-' if status information
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is not found.
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Args:
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target (str): Build-target name
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Returns:
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str: 'Active', 'Orphan' or '-'.
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"""
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if not target in self.database:
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print(f"WARNING: no status info for '{target}'", file=sys.stderr)
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return '-'
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tmp = self.database[target][0]
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if tmp.startswith('Maintained'):
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return 'Active'
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if tmp.startswith('Supported'):
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return 'Active'
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if tmp.startswith('Orphan'):
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return 'Orphan'
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print(f"WARNING: {tmp}: unknown status for '{target}'", file=sys.stderr)
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return '-'
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def get_maintainers(self, target):
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"""Return the maintainers of the given board.
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Args:
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target (str): Build-target name
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Returns:
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str: Maintainers of the board. If the board has two or more
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maintainers, they are separated with colons.
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"""
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if not target in self.database:
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print(f"WARNING: no maintainers for '{target}'", file=sys.stderr)
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return ''
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return ':'.join(self.database[target][1])
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def parse_file(self, fname):
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"""Parse a MAINTAINERS file.
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Parse a MAINTAINERS file and accumulate board status and maintainers
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information in the self.database dict.
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Args:
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fname (str): MAINTAINERS file to be parsed
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"""
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targets = []
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maintainers = []
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status = '-'
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with open(fname, encoding="utf-8") as inf:
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for line in inf:
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# Check also commented maintainers
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if line[:3] == '#M:':
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line = line[1:]
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tag, rest = line[:2], line[2:].strip()
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if tag == 'M:':
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maintainers.append(rest)
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elif tag == 'F:':
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# expand wildcard and filter by 'configs/*_defconfig'
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for item in glob.glob(rest):
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front, match, rear = item.partition('configs/')
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if not front and match:
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front, match, rear = rear.rpartition('_defconfig')
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if match and not rear:
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targets.append(front)
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elif tag == 'S:':
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status = rest
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elif line == '\n':
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for target in targets:
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self.database[target] = (status, maintainers)
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targets = []
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maintainers = []
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status = '-'
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if targets:
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for target in targets:
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self.database[target] = (status, maintainers)
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class Boards:
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"""Manage a list of boards."""
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def __init__(self):
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# Use a simple list here, sinc OrderedDict requires Python 2.7
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self._boards = []
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def add_board(self, brd):
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"""Add a new board to the list.
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The board's target member must not already exist in the board list.
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Args:
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brd (Board): board to add
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"""
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self._boards.append(brd)
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def read_boards(self, fname):
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"""Read a list of boards from a board file.
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Create a Board object for each and add it to our _boards list.
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Args:
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fname (str): Filename of boards.cfg file
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"""
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with open(fname, 'r', encoding='utf-8') as inf:
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for line in inf:
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if line[0] == '#':
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continue
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fields = line.split()
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if not fields:
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continue
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for upto, field in enumerate(fields):
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if field == '-':
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fields[upto] = ''
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while len(fields) < 8:
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fields.append('')
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if len(fields) > 8:
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fields = fields[:8]
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brd = board.Board(*fields)
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self.add_board(brd)
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def get_list(self):
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"""Return a list of available boards.
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Returns:
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List of Board objects
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"""
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return self._boards
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def get_dict(self):
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"""Build a dictionary containing all the boards.
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Returns:
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Dictionary:
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key is board.target
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value is board
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"""
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board_dict = OrderedDict()
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for brd in self._boards:
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board_dict[brd.target] = brd
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return board_dict
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def get_selected_dict(self):
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"""Return a dictionary containing the selected boards
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Returns:
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List of Board objects that are marked selected
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"""
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board_dict = OrderedDict()
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for brd in self._boards:
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if brd.build_it:
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board_dict[brd.target] = brd
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return board_dict
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def get_selected(self):
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"""Return a list of selected boards
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Returns:
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List of Board objects that are marked selected
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"""
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return [brd for brd in self._boards if brd.build_it]
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def get_selected_names(self):
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"""Return a list of selected boards
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Returns:
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List of board names that are marked selected
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"""
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return [brd.target for brd in self._boards if brd.build_it]
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@classmethod
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def _build_terms(cls, args):
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"""Convert command line arguments to a list of terms.
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This deals with parsing of the arguments. It handles the '&'
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operator, which joins several expressions into a single Term.
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For example:
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['arm & freescale sandbox', 'tegra']
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will produce 3 Terms containing expressions as follows:
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arm, freescale
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sandbox
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tegra
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The first Term has two expressions, both of which must match for
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a board to be selected.
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Args:
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args (list of str): List of command line arguments
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Returns:
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list of Term: A list of Term objects
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"""
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syms = []
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for arg in args:
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for word in arg.split():
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sym_build = []
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for term in word.split('&'):
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if term:
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sym_build.append(term)
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sym_build.append('&')
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syms += sym_build[:-1]
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terms = []
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term = None
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oper = None
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for sym in syms:
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if sym == '&':
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oper = sym
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elif oper:
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term.add_expr(sym)
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oper = None
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else:
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if term:
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terms.append(term)
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term = Term()
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term.add_expr(sym)
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if term:
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terms.append(term)
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return terms
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def select_boards(self, args, exclude=None, brds=None):
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"""Mark boards selected based on args
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Normally either boards (an explicit list of boards) or args (a list of
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terms to match against) is used. It is possible to specify both, in
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which case they are additive.
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If brds and args are both empty, all boards are selected.
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Args:
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args (list of str): List of strings specifying boards to include,
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either named, or by their target, architecture, cpu, vendor or
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soc. If empty, all boards are selected.
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exclude (list of str): List of boards to exclude, regardless of
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'args', or None for none
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brds (list of Board): List of boards to build, or None/[] for all
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Returns:
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Tuple
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Dictionary which holds the list of boards which were selected
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due to each argument, arranged by argument.
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List of errors found
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"""
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def _check_board(brd):
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"""Check whether to include or exclude a board
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Checks the various terms and decide whether to build it or not (the
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'build_it' variable).
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If it is built, add the board to the result[term] list so we know
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which term caused it to be built. Add it to result['all'] also.
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Keep a list of boards we found in 'found', so we can report boards
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which appear in self._boards but not in brds.
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Args:
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brd (Board): Board to check
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"""
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matching_term = None
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build_it = False
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if terms:
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for term in terms:
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if term.matches(brd.props):
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matching_term = str(term)
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build_it = True
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break
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elif brds:
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if brd.target in brds:
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build_it = True
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found.append(brd.target)
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else:
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build_it = True
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# Check that it is not specifically excluded
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for expr in exclude_list:
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if expr.matches(brd.props):
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build_it = False
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break
|
|
|
|
if build_it:
|
|
brd.build_it = True
|
|
if matching_term:
|
|
result[matching_term].append(brd.target)
|
|
result['all'].append(brd.target)
|
|
|
|
result = OrderedDict()
|
|
warnings = []
|
|
terms = self._build_terms(args)
|
|
|
|
result['all'] = []
|
|
for term in terms:
|
|
result[str(term)] = []
|
|
|
|
exclude_list = []
|
|
if exclude:
|
|
for expr in exclude:
|
|
exclude_list.append(Expr(expr))
|
|
|
|
found = []
|
|
for brd in self._boards:
|
|
_check_board(brd)
|
|
|
|
if brds:
|
|
remaining = set(brds) - set(found)
|
|
if remaining:
|
|
warnings.append(f"Boards not found: {', '.join(remaining)}\n")
|
|
|
|
return result, warnings
|
|
|
|
@classmethod
|
|
def scan_defconfigs_for_multiprocess(cls, queue, defconfigs):
|
|
"""Scan defconfig files and queue their board parameters
|
|
|
|
This function is intended to be passed to multiprocessing.Process()
|
|
constructor.
|
|
|
|
Args:
|
|
queue (multiprocessing.Queue): The resulting board parameters are
|
|
written into this.
|
|
defconfigs (sequence of str): A sequence of defconfig files to be
|
|
scanned.
|
|
"""
|
|
kconf_scanner = KconfigScanner()
|
|
for defconfig in defconfigs:
|
|
queue.put(kconf_scanner.scan(defconfig))
|
|
|
|
@classmethod
|
|
def read_queues(cls, queues, params_list):
|
|
"""Read the queues and append the data to the paramers list"""
|
|
for que in queues:
|
|
while not que.empty():
|
|
params_list.append(que.get())
|
|
|
|
def scan_defconfigs(self, jobs=1):
|
|
"""Collect board parameters for all defconfig files.
|
|
|
|
This function invokes multiple processes for faster processing.
|
|
|
|
Args:
|
|
jobs (int): The number of jobs to run simultaneously
|
|
"""
|
|
all_defconfigs = []
|
|
for (dirpath, _, filenames) in os.walk(CONFIG_DIR):
|
|
for filename in fnmatch.filter(filenames, '*_defconfig'):
|
|
if fnmatch.fnmatch(filename, '.*'):
|
|
continue
|
|
all_defconfigs.append(os.path.join(dirpath, filename))
|
|
|
|
total_boards = len(all_defconfigs)
|
|
processes = []
|
|
queues = []
|
|
for i in range(jobs):
|
|
defconfigs = all_defconfigs[total_boards * i // jobs :
|
|
total_boards * (i + 1) // jobs]
|
|
que = multiprocessing.Queue(maxsize=-1)
|
|
proc = multiprocessing.Process(
|
|
target=self.scan_defconfigs_for_multiprocess,
|
|
args=(que, defconfigs))
|
|
proc.start()
|
|
processes.append(proc)
|
|
queues.append(que)
|
|
|
|
# The resulting data should be accumulated to this list
|
|
params_list = []
|
|
|
|
# Data in the queues should be retrieved preriodically.
|
|
# Otherwise, the queues would become full and subprocesses would get stuck.
|
|
while any(p.is_alive() for p in processes):
|
|
self.read_queues(queues, params_list)
|
|
# sleep for a while until the queues are filled
|
|
time.sleep(SLEEP_TIME)
|
|
|
|
# Joining subprocesses just in case
|
|
# (All subprocesses should already have been finished)
|
|
for proc in processes:
|
|
proc.join()
|
|
|
|
# retrieve leftover data
|
|
self.read_queues(queues, params_list)
|
|
|
|
return params_list
|
|
|
|
@classmethod
|
|
def insert_maintainers_info(cls, params_list):
|
|
"""Add Status and Maintainers information to the board parameters list.
|
|
|
|
Args:
|
|
params_list (list of dict): A list of the board parameters
|
|
"""
|
|
database = MaintainersDatabase()
|
|
for (dirpath, _, filenames) in os.walk('.'):
|
|
if 'MAINTAINERS' in filenames:
|
|
database.parse_file(os.path.join(dirpath, 'MAINTAINERS'))
|
|
|
|
for i, params in enumerate(params_list):
|
|
target = params['target']
|
|
params['status'] = database.get_status(target)
|
|
params['maintainers'] = database.get_maintainers(target)
|
|
params_list[i] = params
|
|
|
|
@classmethod
|
|
def format_and_output(cls, params_list, output):
|
|
"""Write board parameters into a file.
|
|
|
|
Columnate the board parameters, sort lines alphabetically,
|
|
and then write them to a file.
|
|
|
|
Args:
|
|
params_list (list of dict): The list of board parameters
|
|
output (str): The path to the output file
|
|
"""
|
|
fields = ('status', 'arch', 'cpu', 'soc', 'vendor', 'board', 'target',
|
|
'config', 'maintainers')
|
|
|
|
# First, decide the width of each column
|
|
max_length = {f: 0 for f in fields}
|
|
for params in params_list:
|
|
for field in fields:
|
|
max_length[field] = max(max_length[field], len(params[field]))
|
|
|
|
output_lines = []
|
|
for params in params_list:
|
|
line = ''
|
|
for field in fields:
|
|
# insert two spaces between fields like column -t would
|
|
line += ' ' + params[field].ljust(max_length[field])
|
|
output_lines.append(line.strip())
|
|
|
|
# ignore case when sorting
|
|
output_lines.sort(key=str.lower)
|
|
|
|
with open(output, 'w', encoding="utf-8") as outf:
|
|
outf.write(COMMENT_BLOCK + '\n'.join(output_lines) + '\n')
|
|
|
|
def ensure_board_list(self, output, jobs=1, force=False, quiet=False):
|
|
"""Generate a board database file if needed.
|
|
|
|
Args:
|
|
output (str): The name of the output file
|
|
jobs (int): The number of jobs to run simultaneously
|
|
force (bool): Force to generate the output even if it is new
|
|
quiet (bool): True to avoid printing a message if nothing needs doing
|
|
"""
|
|
if not force and output_is_new(output):
|
|
if not quiet:
|
|
print(f'{output} is up to date. Nothing to do.')
|
|
return
|
|
params_list = self.scan_defconfigs(jobs)
|
|
self.insert_maintainers_info(params_list)
|
|
self.format_and_output(params_list, output)
|