#!/usr/bin/env python3 # SPDX-License-Identifier: GPL-2.0+ """Build and query a Kconfig database for boards. See doc/develop/qconfig.rst for documentation. Author: Masahiro Yamada Author: Simon Glass """ from argparse import ArgumentParser import collections from contextlib import ExitStack import doctest import filecmp import fnmatch import glob import multiprocessing import os import queue import re import shutil import subprocess import sys import tempfile import threading import time import unittest from buildman import bsettings from buildman import kconfiglib from buildman import toolchain from u_boot_pylib import terminal SHOW_GNU_MAKE = 'scripts/show-gnu-make' SLEEP_TIME=0.03 STATE_IDLE = 0 STATE_DEFCONFIG = 1 STATE_AUTOCONF = 2 STATE_SAVEDEFCONFIG = 3 AUTO_CONF_PATH = 'include/config/auto.conf' CONFIG_DATABASE = 'qconfig.db' FAILED_LIST = 'qconfig.failed' CONFIG_LEN = len('CONFIG_') SIZES = { 'SZ_1': 0x00000001, 'SZ_2': 0x00000002, 'SZ_4': 0x00000004, 'SZ_8': 0x00000008, 'SZ_16': 0x00000010, 'SZ_32': 0x00000020, 'SZ_64': 0x00000040, 'SZ_128': 0x00000080, 'SZ_256': 0x00000100, 'SZ_512': 0x00000200, 'SZ_1K': 0x00000400, 'SZ_2K': 0x00000800, 'SZ_4K': 0x00001000, 'SZ_8K': 0x00002000, 'SZ_16K': 0x00004000, 'SZ_32K': 0x00008000, 'SZ_64K': 0x00010000, 'SZ_128K': 0x00020000, 'SZ_256K': 0x00040000, 'SZ_512K': 0x00080000, 'SZ_1M': 0x00100000, 'SZ_2M': 0x00200000, 'SZ_4M': 0x00400000, 'SZ_8M': 0x00800000, 'SZ_16M': 0x01000000, 'SZ_32M': 0x02000000, 'SZ_64M': 0x04000000, 'SZ_128M': 0x08000000, 'SZ_256M': 0x10000000, 'SZ_512M': 0x20000000, 'SZ_1G': 0x40000000, 'SZ_2G': 0x80000000, 'SZ_4G': 0x100000000 } RE_REMOVE_DEFCONFIG = re.compile(r'(.*)_defconfig') # CONFIG symbols present in the build system (from Linux) but not actually used # in U-Boot; KCONFIG symbols IGNORE_SYMS = ['DEBUG_SECTION_MISMATCH', 'FTRACE_MCOUNT_RECORD', 'GCOV_KERNEL', 'GCOV_PROFILE_ALL', 'KALLSYMS', 'KASAN', 'MODVERSIONS', 'SHELL', 'TPL_BUILD', 'VPL_BUILD', 'IS_ENABLED', 'FOO', 'IF_ENABLED_INT', 'IS_ENABLED_', 'IS_ENABLED_1', 'IS_ENABLED_2', 'IS_ENABLED_3', 'SPL_', 'TPL_', 'SPL_FOO', 'TPL_FOO', 'TOOLS_FOO', 'ACME', 'SPL_ACME', 'TPL_ACME', 'TRACE_BRANCH_PROFILING', 'VAL', '_UNDEFINED', 'SPL_BUILD', ] SPL_PREFIXES = ['SPL_', 'TPL_', 'VPL_', 'TOOLS_'] ### helper functions ### def check_top_directory(): """Exit if we are not at the top of source directory.""" for fname in 'README', 'Licenses': if not os.path.exists(fname): sys.exit('Please run at the top of source directory.') def check_clean_directory(): """Exit if the source tree is not clean.""" for fname in '.config', 'include/config': if os.path.exists(fname): sys.exit("source tree is not clean, please run 'make mrproper'") def get_make_cmd(): """Get the command name of GNU Make. U-Boot needs GNU Make for building, but the command name is not necessarily "make". (for example, "gmake" on FreeBSD). Returns the most appropriate command name on your system. """ with subprocess.Popen([SHOW_GNU_MAKE], stdout=subprocess.PIPE) as proc: ret = proc.communicate() if proc.returncode: sys.exit('GNU Make not found') return ret[0].rstrip() def get_matched_defconfig(line): """Get the defconfig files that match a pattern Args: line (str): Path or filename to match, e.g. 'configs/snow_defconfig' or 'k2*_defconfig'. If no directory is provided, 'configs/' is prepended Returns: list of str: a list of matching defconfig files """ dirname = os.path.dirname(line) if dirname: pattern = line else: pattern = os.path.join('configs', line) return glob.glob(pattern) + glob.glob(pattern + '_defconfig') def get_matched_defconfigs(defconfigs_file): """Get all the defconfig files that match the patterns in a file. Args: defconfigs_file (str): File containing a list of defconfigs to process, or '-' to read the list from stdin Returns: list of str: A list of paths to defconfig files, with no duplicates """ defconfigs = [] with ExitStack() as stack: if defconfigs_file == '-': inf = sys.stdin defconfigs_file = 'stdin' else: inf = stack.enter_context(open(defconfigs_file, encoding='utf-8')) for i, line in enumerate(inf): line = line.strip() if not line: continue # skip blank lines silently if ' ' in line: line = line.split(' ')[0] # handle 'git log' input matched = get_matched_defconfig(line) if not matched: print(f"warning: {defconfigs_file}:{i + 1}: no defconfig matched '{line}'", file=sys.stderr) defconfigs += matched # use set() to drop multiple matching return [defconfig[len('configs') + 1:] for defconfig in set(defconfigs)] def get_all_defconfigs(): """Get all the defconfig files under the configs/ directory. Returns: list of str: List of paths to defconfig files """ defconfigs = [] for (dirpath, _, filenames) in os.walk('configs'): dirpath = dirpath[len('configs') + 1:] for filename in fnmatch.filter(filenames, '*_defconfig'): defconfigs.append(os.path.join(dirpath, filename)) return defconfigs def write_file(fname, data): """Write data to a file Args: fname (str): Filename to write to data (list of str): Lines to write (with or without trailing newline); or str to write """ with open(fname, 'w', encoding='utf-8') as out: if isinstance(data, list): for line in data: print(line.rstrip('\n'), file=out) else: out.write(data) def read_file(fname, as_lines=True, skip_unicode=False): """Read a file and return the contents Args: fname (str): Filename to read from as_lines (bool): Return file contents as a list of lines skip_unicode (bool): True to report unicode errors and continue Returns: iter of str: List of ;ines from the file with newline removed; str if as_lines is False with newlines intact; or None if a unicode error occurred Raises: UnicodeDecodeError: Unicode error occurred when reading """ with open(fname, encoding='utf-8') as inf: try: if as_lines: return [line.rstrip('\n') for line in inf.readlines()] return inf.read() except UnicodeDecodeError as exc: if not skip_unicode: raise print(f"Failed on file '{fname}: {exc}") return None ### classes ### class Progress: """Progress Indicator""" def __init__(self, col, total): """Create a new progress indicator. Args: col (terminal.Color): Colour-output class total (int): A number of defconfig files to process. current (int): Number of boards processed so far failed (int): Number of failed boards failure_msg (str): Message indicating number of failures, '' if none """ self.col = col self.total = total self.current = 0 self.good = 0 self.failed = None self.failure_msg = None def inc(self, success): """Increment the number of processed defconfig files. Args: success (bool): True if processing succeeded """ self.good += success self.current += 1 def show(self): """Display the progress.""" if self.current != self.total: line = self.col.build(self.col.GREEN, f'{self.good:5d}') line += self.col.build(self.col.RED, f'{self.current - self.good:5d}') line += self.col.build(self.col.MAGENTA, f'/{self.total - self.current}') print(f'{line} \r', end='') sys.stdout.flush() def completed(self): """Set up extra properties when completed""" self.failed = self.total - self.good self.failure_msg = f'{self.failed} failed, ' if self.failed else '' def scan_kconfig(): """Scan all the Kconfig files and create a Config object Returns: Kconfig object """ # Define environment variables referenced from Kconfig os.environ['srctree'] = os.getcwd() os.environ['UBOOTVERSION'] = 'dummy' os.environ['KCONFIG_OBJDIR'] = '' os.environ['CC'] = 'gcc' return kconfiglib.Kconfig() # pylint: disable=R0903 class KconfigParser: """A parser of .config and include/autoconf.mk.""" re_arch = re.compile(r'CONFIG_SYS_ARCH="(.*)"') re_cpu = re.compile(r'CONFIG_SYS_CPU="(.*)"') def __init__(self, args, build_dir): """Create a new parser. Args: args (Namespace): program arguments build_dir: Build directory. """ self.args = args self.dotconfig = os.path.join(build_dir, '.config') self.autoconf = os.path.join(build_dir, 'include', 'autoconf.mk') self.spl_autoconf = os.path.join(build_dir, 'spl', 'include', 'autoconf.mk') self.config_autoconf = os.path.join(build_dir, AUTO_CONF_PATH) self.defconfig = os.path.join(build_dir, 'defconfig') def get_arch(self): """Parse .config file and return the architecture. Returns: Architecture name (e.g. 'arm'). """ arch = '' cpu = '' for line in read_file(self.dotconfig): m_arch = self.re_arch.match(line) if m_arch: arch = m_arch.group(1) continue m_cpu = self.re_cpu.match(line) if m_cpu: cpu = m_cpu.group(1) if not arch: return None # fix-up for aarch64 if arch == 'arm' and cpu == 'armv8': arch = 'aarch64' return arch class DatabaseThread(threading.Thread): """This thread processes results from Slot threads. It collects the data in the master config directary. There is only one result thread, and this helps to serialise the build output. """ def __init__(self, config_db, db_queue): """Set up a new result thread Args: builder: Builder which will be sent each result """ threading.Thread.__init__(self) self.config_db = config_db self.db_queue= db_queue def run(self): """Called to start up the result thread. We collect the next result job and pass it on to the build. """ while True: defconfig, configs = self.db_queue.get() self.config_db[defconfig] = configs self.db_queue.task_done() class Slot: """A slot to store a subprocess. Each instance of this class handles one subprocess. This class is useful to control multiple threads for faster processing. """ def __init__(self, toolchains, args, progress, devnull, make_cmd, reference_src_dir, db_queue): """Create a new process slot. Args: toolchains: Toolchains object containing toolchains. args: Program arguments progress: A progress indicator. devnull: A file object of '/dev/null'. make_cmd: command name of GNU Make. reference_src_dir: Determine the true starting config state from this source tree. db_queue: output queue to write config info for the database col (terminal.Color): Colour object """ self.toolchains = toolchains self.args = args self.progress = progress self.build_dir = tempfile.mkdtemp() self.devnull = devnull self.make_cmd = (make_cmd, 'O=' + self.build_dir) self.reference_src_dir = reference_src_dir self.db_queue = db_queue self.col = progress.col self.parser = KconfigParser(args, self.build_dir) self.state = STATE_IDLE self.failed_boards = set() self.defconfig = None self.log = [] self.current_src_dir = None self.proc = None def __del__(self): """Delete the working directory This function makes sure the temporary directory is cleaned away even if Python suddenly dies due to error. It should be done in here because it is guaranteed the destructor is always invoked when the instance of the class gets unreferenced. If the subprocess is still running, wait until it finishes. """ if self.state != STATE_IDLE: while self.proc.poll() is None: pass shutil.rmtree(self.build_dir) def add(self, defconfig): """Assign a new subprocess for defconfig and add it to the slot. If the slot is vacant, create a new subprocess for processing the given defconfig and add it to the slot. Just returns False if the slot is occupied (i.e. the current subprocess is still running). Args: defconfig (str): defconfig name. Returns: Return True on success or False on failure """ if self.state != STATE_IDLE: return False self.defconfig = defconfig self.log = [] self.current_src_dir = self.reference_src_dir self.do_defconfig() return True def poll(self): """Check the status of the subprocess and handle it as needed. Returns True if the slot is vacant (i.e. in idle state). If the configuration is successfully finished, assign a new subprocess to build include/autoconf.mk. If include/autoconf.mk is generated, invoke the parser to parse the .config and the include/autoconf.mk, moving config options to the .config as needed. If the .config was updated, run "make savedefconfig" to sync it, update the original defconfig, and then set the slot back to the idle state. Returns: Return True if the subprocess is terminated, False otherwise """ if self.state == STATE_IDLE: return True if self.proc.poll() is None: return False if self.proc.poll() != 0: self.handle_error() elif self.state == STATE_DEFCONFIG: if self.reference_src_dir and not self.current_src_dir: self.do_savedefconfig() else: self.do_autoconf() elif self.state == STATE_AUTOCONF: if self.current_src_dir: self.current_src_dir = None self.do_defconfig() elif self.args.build_db: self.do_build_db() else: self.do_savedefconfig() elif self.state == STATE_SAVEDEFCONFIG: self.update_defconfig() else: sys.exit('Internal Error. This should not happen.') return self.state == STATE_IDLE def handle_error(self): """Handle error cases.""" self.log.append(self.col.build(self.col.RED, 'Failed to process', bright=True)) if self.args.verbose: for line in self.proc.stderr.read().decode().splitlines(): self.log.append(self.col.build(self.col.CYAN, line, True)) self.finish(False) def do_defconfig(self): """Run 'make _defconfig' to create the .config file.""" cmd = list(self.make_cmd) cmd.append(self.defconfig) # pylint: disable=R1732 self.proc = subprocess.Popen(cmd, stdout=self.devnull, stderr=subprocess.PIPE, cwd=self.current_src_dir) self.state = STATE_DEFCONFIG def do_autoconf(self): """Run 'make AUTO_CONF_PATH'.""" arch = self.parser.get_arch() try: tchain = self.toolchains.Select(arch) except ValueError: self.log.append(self.col.build( self.col.YELLOW, f"Tool chain for '{arch}' is missing: do nothing")) self.finish(False) return env = tchain.MakeEnvironment(False) cmd = list(self.make_cmd) cmd.append('KCONFIG_IGNORE_DUPLICATES=1') cmd.append(AUTO_CONF_PATH) # pylint: disable=R1732 self.proc = subprocess.Popen(cmd, stdout=self.devnull, env=env, stderr=subprocess.PIPE, cwd=self.current_src_dir) self.state = STATE_AUTOCONF def do_build_db(self): """Add the board to the database""" configs = {} for line in read_file(os.path.join(self.build_dir, AUTO_CONF_PATH)): if line.startswith('CONFIG'): config, value = line.split('=', 1) configs[config] = value.rstrip() self.db_queue.put([self.defconfig, configs]) self.finish(True) def do_savedefconfig(self): """Update the .config and run 'make savedefconfig'.""" if not self.args.force_sync: self.finish(True) return cmd = list(self.make_cmd) cmd.append('savedefconfig') # pylint: disable=R1732 self.proc = subprocess.Popen(cmd, stdout=self.devnull, stderr=subprocess.PIPE) self.state = STATE_SAVEDEFCONFIG def update_defconfig(self): """Update the input defconfig and go back to the idle state.""" orig_defconfig = os.path.join('configs', self.defconfig) new_defconfig = os.path.join(self.build_dir, 'defconfig') updated = not filecmp.cmp(orig_defconfig, new_defconfig) if updated: self.log.append( self.col.build(self.col.BLUE, 'defconfig updated', bright=True)) if not self.args.dry_run and updated: shutil.move(new_defconfig, orig_defconfig) self.finish(True) def finish(self, success): """Display log along with progress and go to the idle state. Args: success (bool): Should be True when the defconfig was processed successfully, or False when it fails. """ # output at least 30 characters to hide the "* defconfigs out of *". name = self.defconfig[:-len('_defconfig')] if self.log: # Put the first log line on the first line log = name.ljust(20) + ' ' + self.log[0] if len(self.log) > 1: log += '\n' + '\n'.join([' ' + s for s in self.log[1:]]) # Some threads are running in parallel. # Print log atomically to not mix up logs from different threads. print(log, file=(sys.stdout if success else sys.stderr)) if not success: if self.args.exit_on_error: sys.exit('Exit on error.') # If --exit-on-error flag is not set, skip this board and continue. # Record the failed board. self.failed_boards.add(name) self.progress.inc(success) self.progress.show() self.state = STATE_IDLE def get_failed_boards(self): """Returns a set of failed boards (defconfigs) in this slot. """ return self.failed_boards class Slots: """Controller of the array of subprocess slots.""" def __init__(self, toolchains, args, progress, reference_src_dir, db_queue): """Create a new slots controller. Args: toolchains (Toolchains): Toolchains object containing toolchains args (Namespace): Program arguments progress (Progress): A progress indicator. reference_src_dir (str): Determine the true starting config state from this source tree (None for none) db_queue (Queue): output queue to write config info for the database """ self.args = args self.slots = [] self.progress = progress self.col = progress.col devnull = subprocess.DEVNULL make_cmd = get_make_cmd() for _ in range(args.jobs): self.slots.append(Slot(toolchains, args, progress, devnull, make_cmd, reference_src_dir, db_queue)) def add(self, defconfig): """Add a new subprocess if a vacant slot is found. Args: defconfig (str): defconfig name to be put into. Returns: Return True on success or False on failure """ 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 at lease one vacant slot is found, False otherwise. """ 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 the slots are vacant, False otherwise. """ ret = True for slot in self.slots: if not slot.poll(): ret = False return ret def write_failed_boards(self): """Show the results of processing""" boards = set() for slot in self.slots: boards |= slot.get_failed_boards() if boards: boards = '\n'.join(sorted(boards)) + '\n' write_file(FAILED_LIST, boards) class ReferenceSource: """Reference source against which original configs should be parsed.""" def __init__(self, commit): """Create a reference source directory based on a specified commit. Args: commit: commit to git-clone """ self.src_dir = tempfile.mkdtemp() print('Cloning git repo to a separate work directory...') subprocess.check_output(['git', 'clone', os.getcwd(), '.'], cwd=self.src_dir) rev = subprocess.check_output(['git', 'rev-parse', '--short', commit]).strip() print(f"Checkout '{rev}' to build the original autoconf.mk.") subprocess.check_output(['git', 'checkout', commit], stderr=subprocess.STDOUT, cwd=self.src_dir) def __del__(self): """Delete the reference source directory This function makes sure the temporary directory is cleaned away even if Python suddenly dies due to error. It should be done in here because it is guaranteed the destructor is always invoked when the instance of the class gets unreferenced. """ shutil.rmtree(self.src_dir) def get_dir(self): """Return the absolute path to the reference source directory.""" return self.src_dir def move_config(args): """Build database or sync config options to defconfig files. Args: args (Namespace): Program arguments Returns: tuple: config_db (dict of configs for each defconfig): key: defconfig name, e.g. "MPC8548CDS_legacy_defconfig" value: dict: key: CONFIG option value: Value of option Progress: Progress indicator """ config_db = {} db_queue = queue.Queue() dbt = DatabaseThread(config_db, db_queue) dbt.daemon = True dbt.start() check_clean_directory() bsettings.setup('') # Get toolchains to use toolchains = toolchain.Toolchains() toolchains.GetSettings() toolchains.Scan(verbose=False) if args.git_ref: reference_src = ReferenceSource(args.git_ref) reference_src_dir = reference_src.get_dir() else: reference_src_dir = None if args.defconfigs: defconfigs = get_matched_defconfigs(args.defconfigs) else: defconfigs = get_all_defconfigs() col = terminal.Color(terminal.COLOR_NEVER if args.nocolour else terminal.COLOR_IF_TERMINAL) progress = Progress(col, len(defconfigs)) slots = Slots(toolchains, args, progress, reference_src_dir, db_queue) # 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) # wait until all the subprocesses finish while not slots.empty(): time.sleep(SLEEP_TIME) slots.write_failed_boards() db_queue.join() progress.completed() return config_db, progress def find_kconfig_rules(kconf, config, imply_config): """Check whether a config has a 'select' or 'imply' keyword Args: kconf (Kconfiglib.Kconfig): Kconfig object config (str): Name of config to check (without CONFIG_ prefix) imply_config (str): Implying config (without CONFIG_ prefix) which may or may not have an 'imply' for 'config') Returns: Symbol object for 'config' if found, else None """ sym = kconf.syms.get(imply_config) if sym: for sel, _ in (sym.selects + sym.implies): if sel.name == config: return sym return None def check_imply_rule(kconf, imply_config): """Check if we can add an 'imply' option This finds imply_config in the Kconfig and looks to see if it is possible to add an 'imply' for 'config' to that part of the Kconfig. Args: kconf (Kconfiglib.Kconfig): Kconfig object imply_config (str): Implying config (without CONFIG_ prefix) which may or may not have an 'imply' for 'config') Returns: tuple: str: filename of Kconfig file containing imply_config, or None if none int: line number within the Kconfig file, or 0 if none str: message indicating the result """ sym = kconf.syms.get(imply_config) if not sym: return 'cannot find sym' nodes = sym.nodes if len(nodes) != 1: return f'{len(nodes)} locations' node = nodes[0] fname, linenum = node.filename, node.linenr cwd = os.getcwd() if cwd and fname.startswith(cwd): fname = fname[len(cwd) + 1:] file_line = f' at {fname}:{linenum}' data = read_file(fname) if data[linenum - 1] != f'config {imply_config}': return None, 0, f'bad sym format {data[linenum]}{file_line})' return fname, linenum, f'adding{file_line}' def add_imply_rule(config, fname, linenum): """Add a new 'imply' option to a Kconfig Args: config (str): config option to add an imply for (without CONFIG_ prefix) fname (str): Kconfig filename to update linenum (int): Line number to place the 'imply' before Returns: Message indicating the result """ file_line = f' at {fname}:{linenum}' data = read_file(fname) linenum -= 1 for offset, line in enumerate(data[linenum:]): if line.strip().startswith('help') or not line: data.insert(linenum + offset, f'\timply {config}') write_file(fname, data) return f'added{file_line}' return 'could not insert%s' (IMPLY_MIN_2, IMPLY_TARGET, IMPLY_CMD, IMPLY_NON_ARCH_BOARD) = ( 1, 2, 4, 8) IMPLY_FLAGS = { 'min2': [IMPLY_MIN_2, 'Show options which imply >2 boards (normally >5)'], 'target': [IMPLY_TARGET, 'Allow CONFIG_TARGET_... options to imply'], 'cmd': [IMPLY_CMD, 'Allow CONFIG_CMD_... to imply'], 'non-arch-board': [ IMPLY_NON_ARCH_BOARD, 'Allow Kconfig options outside arch/ and /board/ to imply'], } def read_database(): """Read in the config database Returns: tuple: set of all config options seen (each a str) set of all defconfigs seen (each a str) dict of configs for each defconfig: key: defconfig name, e.g. "MPC8548CDS_legacy_defconfig" value: dict: key: CONFIG option value: Value of option dict of defconfigs for each config: key: CONFIG option value: set of boards using that option """ configs = {} # key is defconfig name, value is dict of (CONFIG_xxx, value) config_db = {} # Set of all config options we have seen all_configs = set() # Set of all defconfigs we have seen all_defconfigs = set() defconfig_db = collections.defaultdict(set) defconfig = None for line in read_file(CONFIG_DATABASE): line = line.rstrip() if not line: # Separator between defconfigs config_db[defconfig] = configs all_defconfigs.add(defconfig) configs = {} elif line[0] == ' ': # CONFIG line config, value = line.strip().split('=', 1) configs[config] = value defconfig_db[config].add(defconfig) all_configs.add(config) else: # New defconfig defconfig = line return all_configs, all_defconfigs, config_db, defconfig_db def do_imply_config(config_list, add_imply, imply_flags, skip_added, check_kconfig=True, find_superset=False): """Find CONFIG options which imply those in the list Some CONFIG options can be implied by others and this can help to reduce the size of the defconfig files. For example, CONFIG_X86 implies CONFIG_CMD_IRQ, so we can put 'imply CMD_IRQ' under 'config X86' and all x86 boards will have that option, avoiding adding CONFIG_CMD_IRQ to each of the x86 defconfig files. This function uses the qconfig database to find such options. It displays a list of things that could possibly imply those in the list. The algorithm ignores any that start with CONFIG_TARGET since these typically refer to only a few defconfigs (often one). It also does not display a config with less than 5 defconfigs. The algorithm works using sets. For each target config in config_list: - Get the set 'defconfigs' which use that target config - For each config (from a list of all configs): - Get the set 'imply_defconfig' of defconfigs which use that config - - If imply_defconfigs contains anything not in defconfigs then this config does not imply the target config Args: config_list (list of str): List of CONFIG options to check add_imply (bool): Automatically add an 'imply' for each config. imply_flags (int): Flags which control which implying configs are allowed (IMPLY_...) skip_added (bool): Don't show options which already have an imply added. check_kconfig (bool): Check if implied symbols already have an 'imply' or 'select' for the target config, and show this information if so. find_superset (bool): True to look for configs which are a superset of those already found. So for example if CONFIG_EXYNOS5 implies an option, but CONFIG_EXYNOS covers a larger set of defconfigs and also implies that option, this will drop the former in favour of the latter. In practice this option has not proved very used. Note the terminoloy: config - a CONFIG_XXX options (a string, e.g. 'CONFIG_CMD_EEPROM') defconfig - a defconfig file (a string, e.g. 'configs/snow_defconfig') """ kconf = scan_kconfig() if check_kconfig else None if add_imply and add_imply != 'all': add_imply = add_imply.split(',') all_configs, all_defconfigs, _, defconfig_db = read_database() # Work through each target config option in turn, independently for config in config_list: defconfigs = defconfig_db.get(config) if not defconfigs: print(f'{config} not found in any defconfig') continue # Get the set of defconfigs without this one (since a config cannot # imply itself) non_defconfigs = all_defconfigs - defconfigs num_defconfigs = len(defconfigs) print(f'{config} found in {num_defconfigs}/{len(all_configs)} defconfigs') # This will hold the results: key=config, value=defconfigs containing it imply_configs = {} rest_configs = all_configs - set([config]) # Look at every possible config, except the target one for imply_config in rest_configs: if 'ERRATUM' in imply_config: continue if not imply_flags & IMPLY_CMD: if 'CONFIG_CMD' in imply_config: continue if not imply_flags & IMPLY_TARGET: if 'CONFIG_TARGET' in imply_config: continue # Find set of defconfigs that have this config imply_defconfig = defconfig_db[imply_config] # Get the intersection of this with defconfigs containing the # target config common_defconfigs = imply_defconfig & defconfigs # Get the set of defconfigs containing this config which DO NOT # also contain the taret config. If this set is non-empty it means # that this config affects other defconfigs as well as (possibly) # the ones affected by the target config. This means it implies # things we don't want to imply. not_common_defconfigs = imply_defconfig & non_defconfigs if not_common_defconfigs: continue # If there are common defconfigs, imply_config may be useful if common_defconfigs: skip = False if find_superset: for prev in list(imply_configs.keys()): prev_count = len(imply_configs[prev]) count = len(common_defconfigs) if (prev_count > count and (imply_configs[prev] & common_defconfigs == common_defconfigs)): # skip imply_config because prev is a superset skip = True break if count > prev_count: # delete prev because imply_config is a superset del imply_configs[prev] if not skip: imply_configs[imply_config] = common_defconfigs # Now we have a dict imply_configs of configs which imply each config # The value of each dict item is the set of defconfigs containing that # config. Rank them so that we print the configs that imply the largest # number of defconfigs first. ranked_iconfigs = sorted(imply_configs, key=lambda k: len(imply_configs[k]), reverse=True) kconfig_info = '' cwd = os.getcwd() add_list = collections.defaultdict(list) for iconfig in ranked_iconfigs: num_common = len(imply_configs[iconfig]) # Don't bother if there are less than 5 defconfigs affected. if num_common < (2 if imply_flags & IMPLY_MIN_2 else 5): continue missing = defconfigs - imply_configs[iconfig] missing_str = ', '.join(missing) if missing else 'all' missing_str = '' show = True if kconf: sym = find_kconfig_rules(kconf, config[CONFIG_LEN:], iconfig[CONFIG_LEN:]) kconfig_info = '' if sym: nodes = sym.nodes if len(nodes) == 1: fname, linenum = nodes[0].filename, nodes[0].linenr if cwd and fname.startswith(cwd): fname = fname[len(cwd) + 1:] kconfig_info = f'{fname}:{linenum}' if skip_added: show = False else: sym = kconf.syms.get(iconfig[CONFIG_LEN:]) fname = '' if sym: nodes = sym.nodes if len(nodes) == 1: fname, linenum = nodes[0].filename, nodes[0].linenr if cwd and fname.startswith(cwd): fname = fname[len(cwd) + 1:] in_arch_board = not sym or (fname.startswith('arch') or fname.startswith('board')) if (not in_arch_board and not imply_flags & IMPLY_NON_ARCH_BOARD): continue if add_imply and (add_imply == 'all' or iconfig in add_imply): fname, linenum, kconfig_info = (check_imply_rule(kconf, iconfig[CONFIG_LEN:])) if fname: add_list[fname].append(linenum) if show and kconfig_info != 'skip': print(f'{num_common:5} : ' f'{iconfig.ljust(30)}{kconfig_info.ljust(25)} {missing_str}') # Having collected a list of things to add, now we add them. We process # each file from the largest line number to the smallest so that # earlier additions do not affect our line numbers. E.g. if we added an # imply at line 20 it would change the position of each line after # that. for fname, linenums in add_list.items(): for linenum in sorted(linenums, reverse=True): add_imply_rule(config[CONFIG_LEN:], fname, linenum) def defconfig_matches(configs, re_match, re_val): """Check if any CONFIG option matches a regex The match must be complete, i.e. from the start to end of the CONFIG option. Args: configs (dict): Dict of CONFIG options: key: CONFIG option value: Value of option re_match (re.Pattern): Match to check re_val (re.Pattern): Regular expression to check against value (or None) Returns: bool: True if any CONFIG matches the regex """ for cfg, val in configs.items(): if re_match.fullmatch(cfg): if not re_val or re_val.fullmatch(val): return True return False def do_find_config(config_list, list_format): """Find boards with a given combination of CONFIGs Args: config_list (list of str): List of CONFIG options to check (each a regex consisting of a config option, with or without a CONFIG_ prefix. If an option is preceded by a tilde (~) then it must be false, otherwise it must be true) list_format (bool): True to write in 'list' format, one board name per line Returns: int: exit code (0 for success) """ _, all_defconfigs, config_db, _ = read_database() # Start with all defconfigs out = all_defconfigs # Work through each config in turn for item in config_list: # Get the real config name and whether we want this config or not cfg = item want = True if cfg[0] == '~': want = False cfg = cfg[1:] val = None re_val = None if '=' in cfg: cfg, val = cfg.split('=', maxsplit=1) re_val = re.compile(val) # Search everything that is still in the running. If it has a config # that we want, or doesn't have one that we don't, add it into the # running for the next stage in_list = out out = set() re_match = re.compile(cfg) for defc in in_list: has_cfg = defconfig_matches(config_db[defc], re_match, re_val) if has_cfg == want: out.add(defc) if not list_format: print(f'{len(out)} matches') sep = '\n' if list_format else ' ' print(sep.join(item.split('_defconfig')[0] for item in sorted(list(out)))) return 0 def prefix_config(cfg): """Prefix a config with CONFIG_ if needed This handles ~ operator, which indicates that the CONFIG should be disabled >>> prefix_config('FRED') 'CONFIG_FRED' >>> prefix_config('CONFIG_FRED') 'CONFIG_FRED' >>> prefix_config('~FRED') '~CONFIG_FRED' >>> prefix_config('~CONFIG_FRED') '~CONFIG_FRED' >>> prefix_config('A123') 'CONFIG_A123' """ oper = '' if cfg[0] == '~': oper = cfg[0] cfg = cfg[1:] if not cfg.startswith('CONFIG_'): cfg = 'CONFIG_' + cfg return oper + cfg RE_MK_CONFIGS = re.compile(r'CONFIG_(\$\(SPL_(?:TPL_)?\))?([A-Za-z0-9_]*)') RE_IFDEF = re.compile(r'(ifdef|ifndef)') RE_C_CONFIGS = re.compile(r'CONFIG_([A-Za-z0-9_]*)') RE_CONFIG_IS = re.compile(r'CONFIG_IS_ENABLED\(([A-Za-z0-9_]*)\)') class ConfigUse: """Tracks whether a config relates to SPL or not""" def __init__(self, cfg, is_spl, fname, rest): """Set up a new ConfigUse Args: cfg (str): CONFIG option, without any CONFIG_ or SPL_ prefix is_spl (bool): True if this option relates to SPL fname (str): Makefile filename where the CONFIG option was found rest (str): Line of the Makefile """ self.cfg = cfg self.is_spl = is_spl self.fname = fname self.rest = rest def __hash__(self): return hash((self.cfg, self.is_spl)) def scan_makefiles(fnames): """Scan Makefiles looking for Kconfig options Looks for uses of CONFIG options in Makefiles Args: fnames (list of tuple): str: Makefile filename where the option was found str: Line of the Makefile Returns: tuple: dict: all_uses key (ConfigUse): object value (list of str): matching lines dict: Uses by filename key (str): filename value (set of ConfigUse): uses in that filename >>> RE_MK_CONFIGS.search('CONFIG_FRED').groups() (None, 'FRED') >>> RE_MK_CONFIGS.search('CONFIG_$(SPL_)MARY').groups() ('$(SPL_)', 'MARY') >>> RE_MK_CONFIGS.search('CONFIG_$(SPL_TPL_)MARY').groups() ('$(SPL_TPL_)', 'MARY') """ all_uses = collections.defaultdict(list) fname_uses = {} for fname, rest in fnames: m_iter = RE_MK_CONFIGS.finditer(rest) for mat in m_iter: real_opt = mat.group(2) if real_opt == '': continue is_spl = False if mat.group(1): is_spl = True use = ConfigUse(real_opt, is_spl, fname, rest) if fname not in fname_uses: fname_uses[fname] = set() fname_uses[fname].add(use) all_uses[use].append(rest) return all_uses, fname_uses def scan_src_files(fnames): """Scan source files (other than Makefiles) looking for Kconfig options Looks for uses of CONFIG options Args: fnames (list of tuple): str: Makefile filename where the option was found str: Line of the Makefile Returns: tuple: dict: all_uses key (ConfigUse): object value (list of str): matching lines dict: Uses by filename key (str): filename value (set of ConfigUse): uses in that filename >>> RE_C_CONFIGS.search('CONFIG_FRED').groups() ('FRED',) >>> RE_CONFIG_IS.search('CONFIG_IS_ENABLED(MARY)').groups() ('MARY',) >>> RE_CONFIG_IS.search('#if CONFIG_IS_ENABLED(OF_PLATDATA)').groups() ('OF_PLATDATA',) """ fname = None rest = None def add_uses(m_iter, is_spl): for mat in m_iter: real_opt = mat.group(1) if real_opt == '': continue use = ConfigUse(real_opt, is_spl, fname, rest) if fname not in fname_uses: fname_uses[fname] = set() fname_uses[fname].add(use) all_uses[use].append(rest) all_uses = collections.defaultdict(list) fname_uses = {} for fname, rest in fnames: m_iter = RE_C_CONFIGS.finditer(rest) add_uses(m_iter, False) m_iter2 = RE_CONFIG_IS.finditer(rest) add_uses(m_iter2, True) return all_uses, fname_uses MODE_NORMAL, MODE_SPL, MODE_PROPER = range(3) def do_scan_source(path, do_update): """Scan the source tree for Kconfig inconsistencies Args: path (str): Path to source tree do_update (bool) : True to write to scripts/kconf_... files """ def is_not_proper(name): for prefix in SPL_PREFIXES: if name.startswith(prefix): return name[len(prefix):] return False def check_not_found(all_uses, spl_mode): """Check for Kconfig options mentioned in the source but not in Kconfig Args: all_uses (dict): key (ConfigUse): object value (list of str): matching lines spl_mode (int): If MODE_SPL, look at source code which implies an SPL_ option, but for which there is none; for MOD_PROPER, look at source code which implies a Proper option (i.e. use of CONFIG_IS_ENABLED() or $(SPL_) or $(SPL_TPL_) but for which there none; if MODE_NORMAL, ignore SPL Returns: dict: key (str): CONFIG name (without 'CONFIG_' prefix value (list of ConfigUse): List of uses of this CONFIG """ # Make sure we know about all the options not_found = collections.defaultdict(list) for use, _ in all_uses.items(): name = use.cfg if name in IGNORE_SYMS: continue check = True if spl_mode == MODE_SPL: check = use.is_spl # If it is an SPL symbol, try prepending all SPL_ prefixes to # find at least one SPL symbol if use.is_spl: for prefix in SPL_PREFIXES: try_name = prefix + name sym = kconf.syms.get(try_name) if sym: break if not sym: not_found[f'SPL_{name}'].append(use) continue elif spl_mode == MODE_PROPER: # Try to find the Proper version of this symbol, i.e. without # the SPL_ prefix proper_name = is_not_proper(name) if proper_name: name = proper_name elif not use.is_spl: check = False else: # MODE_NORMAL sym = kconf.syms.get(name) if not sym: proper_name = is_not_proper(name) if proper_name: name = proper_name sym = kconf.syms.get(name) if not sym: for prefix in SPL_PREFIXES: try_name = prefix + name sym = kconf.syms.get(try_name) if sym: break if not sym: not_found[name].append(use) continue sym = kconf.syms.get(name) if not sym and check: not_found[name].append(use) return not_found def show_uses(uses): """Show a list of uses along with their filename and code snippet Args: uses (dict): key (str): CONFIG name (without 'CONFIG_' prefix value (list of ConfigUse): List of uses of this CONFIG """ for name in sorted(uses): print(f'{name}: ', end='') for i, use in enumerate(uses[name]): print(f'{" " if i else ""}{use.fname}: {use.rest.strip()}') print('Scanning Kconfig') kconf = scan_kconfig() print(f'Scanning source in {path}') args = ['git', 'grep', '-E', r'IS_ENABLED|\bCONFIG'] with subprocess.Popen(args, stdout=subprocess.PIPE) as proc: out, _ = proc.communicate() lines = out.splitlines() re_fname = re.compile('^([^:]*):(.*)') src_list = [] mk_list = [] for line in lines: linestr = line.decode('utf-8') m_fname = re_fname.search(linestr) if not m_fname: continue fname, rest = m_fname.groups() dirname, leaf = os.path.split(fname) root, ext = os.path.splitext(leaf) if ext == '.autoconf': pass elif ext in ['.c', '.h', '.S', '.lds', '.dts', '.dtsi', '.asl', '.cfg', '.env', '.tmpl']: src_list.append([fname, rest]) elif 'Makefile' in root or ext == '.mk': mk_list.append([fname, rest]) elif ext in ['.yml', '.sh', '.py', '.awk', '.pl', '.rst', '', '.sed']: pass elif 'Kconfig' in root or 'Kbuild' in root: pass elif 'README' in root: pass elif dirname in ['configs']: pass elif dirname.startswith('doc') or dirname.startswith('scripts/kconfig'): pass else: print(f'Not sure how to handle file {fname}') # Scan the Makefiles all_uses, _ = scan_makefiles(mk_list) spl_not_found = set() proper_not_found = set() # Make sure we know about all the options print('\nCONFIG options present in Makefiles but not Kconfig:') not_found = check_not_found(all_uses, MODE_NORMAL) show_uses(not_found) print('\nCONFIG options present in Makefiles but not Kconfig (SPL):') not_found = check_not_found(all_uses, MODE_SPL) show_uses(not_found) spl_not_found |= {is_not_proper(key) or key for key in not_found.keys()} print('\nCONFIG options used as Proper in Makefiles but without a non-SPL_ variant:') not_found = check_not_found(all_uses, MODE_PROPER) show_uses(not_found) proper_not_found |= {not_found.keys()} # Scan the source code all_uses, _ = scan_src_files(src_list) # Make sure we know about all the options print('\nCONFIG options present in source but not Kconfig:') not_found = check_not_found(all_uses, MODE_NORMAL) show_uses(not_found) print('\nCONFIG options present in source but not Kconfig (SPL):') not_found = check_not_found(all_uses, MODE_SPL) show_uses(not_found) spl_not_found |= {is_not_proper(key) or key for key in not_found.keys()} print('\nCONFIG options used as Proper in source but without a non-SPL_ variant:') not_found = check_not_found(all_uses, MODE_PROPER) show_uses(not_found) proper_not_found |= {not_found.keys()} print('\nCONFIG options used as SPL but without an SPL_ variant:') for item in sorted(spl_not_found): print(f' {item}') print('\nCONFIG options used as Proper but without a non-SPL_ variant:') for item in sorted(proper_not_found): print(f' {item}') # Write out the updated information if do_update: with open(os.path.join(path, 'scripts', 'conf_nospl'), 'w', encoding='utf-8') as out: print('# These options should not be enabled in SPL builds\n', file=out) for item in sorted(spl_not_found): print(item, file=out) with open(os.path.join(path, 'scripts', 'conf_noproper'), 'w', encoding='utf-8') as out: print('# These options should not be enabled in Proper builds\n', file=out) for item in sorted(proper_not_found): print(item, file=out) return 0 def parse_args(): """Parse the program arguments Returns: tuple: argparse.ArgumentParser: parser argparse.Namespace: Parsed arguments """ try: cpu_count = multiprocessing.cpu_count() except NotImplementedError: cpu_count = 1 epilog = '''Move config options from headers to defconfig files. See doc/develop/moveconfig.rst for documentation.''' parser = ArgumentParser(epilog=epilog) # Add arguments here parser.add_argument('-a', '--add-imply', type=str, default='', help='comma-separated list of CONFIG options to add ' "an 'imply' statement to for the CONFIG in -i") parser.add_argument('-A', '--skip-added', action='store_true', default=False, help="don't show options which are already marked as " 'implying others') parser.add_argument('-b', '--build-db', action='store_true', default=False, help='build a CONFIG database') parser.add_argument('-C', '--commit', action='store_true', default=False, help='Create a git commit for the operation') parser.add_argument('--nocolour', action='store_true', default=False, help="don't display the log in colour") parser.add_argument('-d', '--defconfigs', type=str, help='a file containing a list of defconfigs to move, ' "one per line (for example 'snow_defconfig') " "or '-' to read from stdin") parser.add_argument('-e', '--exit-on-error', action='store_true', default=False, help='exit immediately on any error') parser.add_argument('-f', '--find', action='store_true', default=False, help='Find boards with a given config combination') parser.add_argument('-i', '--imply', action='store_true', default=False, help='find options which imply others') parser.add_argument('-l', '--list', action='store_true', default=False, help='Show a sorted list of board names, one per line') parser.add_argument('-I', '--imply-flags', type=str, default='', help="control the -i option ('help' for help") parser.add_argument('-j', '--jobs', type=int, default=cpu_count, help='the number of jobs to run simultaneously') parser.add_argument('-n', '--dry-run', action='store_true', default=False, help='perform a trial run (show log with no changes)') parser.add_argument('-r', '--git-ref', type=str, help='the git ref to clone for building the autoconf.mk') parser.add_argument('-s', '--force-sync', action='store_true', default=False, help='force sync by savedefconfig') parser.add_argument('-S', '--spl', action='store_true', default=False, help='parse config options defined for SPL build') parser.add_argument('--scan-source', action='store_true', default=False, help='scan source for uses of CONFIG options') parser.add_argument('-t', '--test', action='store_true', default=False, help='run unit tests') parser.add_argument('-y', '--yes', action='store_true', default=False, help="respond 'yes' to any prompts") parser.add_argument('-u', '--update', action='store_true', default=False, help="update scripts/ files (use with --scan-source)") parser.add_argument('-v', '--verbose', action='store_true', default=False, help='show any build errors as boards are built') parser.add_argument('configs', nargs='*') args = parser.parse_args() if not any((args.force_sync, args.build_db, args.imply, args.find, args.scan_source, args.test)): parser.print_usage() sys.exit(1) return parser, args def imply(args): """Handle checking for flags which imply others Args: args (argparse.Namespace): Program arguments Returns: int: exit code (0 for success) """ imply_flags = 0 if args.imply_flags == 'all': imply_flags = -1 elif args.imply_flags: for flag in args.imply_flags.split(','): bad = flag not in IMPLY_FLAGS if bad: print(f"Invalid flag '{flag}'") if flag == 'help' or bad: print("Imply flags: (separate with ',')") for name, info in IMPLY_FLAGS.items(): print(f' {name:-15s}: {info[1]}') return 1 imply_flags |= IMPLY_FLAGS[flag][0] do_imply_config(args.configs, args.add_imply, imply_flags, args.skip_added) return 0 def add_commit(configs): """Add a commit indicating which CONFIG options were converted Args: configs (list of str) List of CONFIG_... options to process """ subprocess.call(['git', 'add', '-u']) if configs: part = 'et al ' if len(configs) > 1 else '' msg = f'Convert {configs[0]} {part}to Kconfig' msg += ('\n\nThis converts the following to Kconfig:\n %s\n' % '\n '.join(configs)) else: msg = 'configs: Resync with savedefconfig' msg += '\n\nRsync all defconfig files using moveconfig.py' subprocess.call(['git', 'commit', '-s', '-m', msg]) def write_db(config_db, progress): """Write the database to a file Args: config_db (dict of dict): configs for each defconfig key: defconfig name, e.g. "MPC8548CDS_legacy_defconfig" value: dict: key: CONFIG option value: Value of option progress (Progress): Progress indicator. Returns: int: exit code (0 for success) """ col = progress.col with open(CONFIG_DATABASE, 'w', encoding='utf-8') as outf: for defconfig, configs in config_db.items(): outf.write(f'{defconfig}\n') for config in sorted(configs.keys()): outf.write(f' {config}={configs[config]}\n') outf.write('\n') print(col.build( col.RED if progress.failed else col.GREEN, f'{progress.failure_msg}{len(config_db)} boards written to {CONFIG_DATABASE}')) return 0 def move_done(progress): """Write a message indicating that the move is done Args: progress (Progress): Progress indicator. Returns: int: exit code (0 for success) """ col = progress.col if progress.failed: print(col.build(col.RED, f'{progress.failure_msg}see {FAILED_LIST}', True)) else: # Add enough spaces to overwrite the progress indicator print(col.build( col.GREEN, f'{progress.total} processed ', bright=True)) return 0 def do_tests(): """Run doctests and unit tests (so far there are no unit tests)""" sys.argv = [sys.argv[0]] fail, _ = doctest.testmod() if fail: return 1 unittest.main() return 0 def main(): """Main program""" parser, args = parse_args() check_top_directory() # prefix the option name with CONFIG_ if missing args.configs = [prefix_config(cfg) for cfg in args.configs] if args.test: return do_tests() if args.scan_source: return do_scan_source(os.getcwd(), args.update) if args.imply: if imply(args): parser.print_usage() sys.exit(1) return 0 if args.find: return do_find_config(args.configs, args.list) config_db, progress = move_config(args) if args.commit: add_commit(args.configs) if args.build_db: return write_db(config_db, progress) return move_done(progress) if __name__ == '__main__': sys.exit(main())