3 # Author: Masahiro Yamada <yamada.masahiro@socionext.com>
5 # SPDX-License-Identifier: GPL-2.0+
9 Move config options from headers to defconfig files.
11 Since Kconfig was introduced to U-Boot, we have worked on moving
12 config options from headers to Kconfig (defconfig).
14 This tool intends to help this tremendous work.
20 This tool takes one input file. (let's say 'recipe' file here.)
21 The recipe describes the list of config options you want to move.
22 Each line takes the form:
23 <config_name> <type> <default>
24 (the fields must be separated with whitespaces.)
26 <config_name> is the name of config option.
28 <type> is the type of the option. It must be one of bool, tristate,
31 <default> is the default value of the option. It must be appropriate
32 value corresponding to the option type. It must be either y or n for
33 the bool type. Tristate options can also take m (although U-Boot has
34 not supported the module feature).
36 You can add two or more lines in the recipe file, so you can move
37 multiple options at once.
39 Let's say, for example, you want to move CONFIG_CMD_USB and
42 The type should be bool, hex, respectively. So, the recipe file
43 should look like this:
47 CONFIG_SYS_TEXT_BASE hex 0x00000000
49 Next you must edit the Kconfig to add the menu entries for the configs
52 And then run this tool giving the file name of the recipe
54 $ tools/moveconfig.py recipe
56 The tool walks through all the defconfig files to move the config
57 options specified by the recipe file.
59 The log is also displayed on the terminal.
61 Each line is printed in the format
62 <defconfig_name> : <action>
64 <defconfig_name> is the name of the defconfig
65 (without the suffix _defconfig).
67 <action> shows what the tool did for that defconfig.
68 It looks like one of the followings:
71 This config option was moved to the defconfig
73 - Default value 'CONFIG_...'. Do nothing.
74 The value of this option is the same as default.
75 We do not have to add it to the defconfig.
77 - 'CONFIG_...' already exists in Kconfig. Do nothing.
78 This config option is already defined in Kconfig.
79 We do not need/want to touch it.
81 - Undefined. Do nothing.
82 This config option was not found in the config header.
85 - Failed to process. Skip.
86 An error occurred during processing this defconfig. Skipped.
87 (If -e option is passed, the tool exits immediately on error.)
89 Finally, you will be asked, Clean up headers? [y/n]:
91 If you say 'y' here, the unnecessary config defines are removed
92 from the config headers (include/configs/*.h).
93 It just uses the regex method, so you should not rely on it.
94 Just in case, please do 'git diff' to see what happened.
100 This tool runs configuration and builds include/autoconf.mk for every
101 defconfig. The config options defined in Kconfig appear in the .config
102 file (unless they are hidden because of unmet dependency.)
103 On the other hand, the config options defined by board headers are seen
104 in include/autoconf.mk. The tool looks for the specified options in both
105 of them to decide the appropriate action for the options. If the option
106 is found in the .config or the value is the same as the specified default,
107 the option does not need to be touched. If the option is found in
108 include/autoconf.mk, but not in the .config, and the value is different
109 from the default, the tools adds the option to the defconfig.
111 For faster processing, this tool handles multi-threading. It creates
112 separate build directories where the out-of-tree build is run. The
113 temporary build directories are automatically created and deleted as
114 needed. The number of threads are chosen based on the number of the CPU
115 cores of your system although you can change it via -j (--jobs) option.
121 Appropriate toolchain are necessary to generate include/autoconf.mk
122 for all the architectures supported by U-Boot. Most of them are available
123 at the kernel.org site, some are not provided by kernel.org.
125 The default per-arch CROSS_COMPILE used by this tool is specified by
126 the list below, CROSS_COMPILE. You may wish to update the list to
127 use your own. Instead of modifying the list directly, you can give
128 them via environments.
135 Surround each portion of the log with escape sequences to display it
136 in color on the terminal.
139 Specify a file containing a list of defconfigs to move
142 Peform a trial run that does not make any changes. It is useful to
143 see what is going to happen before one actually runs it.
146 Exit immediately if Make exits with a non-zero status while processing
150 Only cleanup the headers; skip the defconfig processing
153 Specify the number of threads to run simultaneously. If not specified,
154 the number of threads is the same as the number of CPU cores.
156 To see the complete list of supported options, run
158 $ tools/moveconfig.py -h
163 import multiprocessing
173 SHOW_GNU_MAKE = 'scripts/show-gnu-make'
176 # Here is the list of cross-tools I use.
177 # Most of them are available at kernel.org
178 # (https://www.kernel.org/pub/tools/crosstool/files/bin/), except the followings:
179 # arc: https://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/releases
180 # blackfin: http://sourceforge.net/projects/adi-toolchain/files/
181 # nds32: http://osdk.andestech.com/packages/
182 # nios2: https://sourcery.mentor.com/GNUToolchain/subscription42545
183 # sh: http://sourcery.mentor.com/public/gnu_toolchain/sh-linux-gnu
186 'aarch64': 'aarch64-linux-',
187 'arm': 'arm-unknown-linux-gnueabi-',
188 'avr32': 'avr32-linux-',
189 'blackfin': 'bfin-elf-',
190 'm68k': 'm68k-linux-',
191 'microblaze': 'microblaze-linux-',
192 'mips': 'mips-linux-',
193 'nds32': 'nds32le-linux-',
194 'nios2': 'nios2-linux-gnu-',
195 'openrisc': 'or32-linux-',
196 'powerpc': 'powerpc-linux-',
197 'sh': 'sh-linux-gnu-',
198 'sparc': 'sparc-linux-',
205 STATE_SAVEDEFCONFIG = 3
208 ACTION_DEFAULT_VALUE = 1
209 ACTION_ALREADY_EXIST = 2
217 COLOR_PURPLE = '0;35'
219 COLOR_LIGHT_GRAY = '0;37'
220 COLOR_DARK_GRAY = '1;30'
221 COLOR_LIGHT_RED = '1;31'
222 COLOR_LIGHT_GREEN = '1;32'
223 COLOR_YELLOW = '1;33'
224 COLOR_LIGHT_BLUE = '1;34'
225 COLOR_LIGHT_PURPLE = '1;35'
226 COLOR_LIGHT_CYAN = '1;36'
229 ### helper functions ###
231 """Get the file object of '/dev/null' device."""
233 devnull = subprocess.DEVNULL # py3k
234 except AttributeError:
235 devnull = open(os.devnull, 'wb')
238 def check_top_directory():
239 """Exit if we are not at the top of source directory."""
240 for f in ('README', 'Licenses'):
241 if not os.path.exists(f):
242 sys.exit('Please run at the top of source directory.')
245 """Get the command name of GNU Make.
247 U-Boot needs GNU Make for building, but the command name is not
248 necessarily "make". (for example, "gmake" on FreeBSD).
249 Returns the most appropriate command name on your system.
251 process = subprocess.Popen([SHOW_GNU_MAKE], stdout=subprocess.PIPE)
252 ret = process.communicate()
253 if process.returncode:
254 sys.exit('GNU Make not found')
255 return ret[0].rstrip()
257 def color_text(color_enabled, color, string):
258 """Return colored string."""
260 return '\033[' + color + 'm' + string + '\033[0m'
264 def log_msg(color_enabled, color, defconfig, msg):
265 """Return the formated line for the log."""
266 return defconfig[:-len('_defconfig')].ljust(37) + ': ' + \
267 color_text(color_enabled, color, msg) + '\n'
269 def update_cross_compile():
270 """Update per-arch CROSS_COMPILE via enviroment variables
272 The default CROSS_COMPILE values are available
273 in the CROSS_COMPILE list above.
275 You can override them via enviroment variables
276 CROSS_COMPILE_{ARCH}.
278 For example, if you want to override toolchain prefixes
279 for ARM and PowerPC, you can do as follows in your shell:
281 export CROSS_COMPILE_ARM=...
282 export CROSS_COMPILE_POWERPC=...
286 for arch in os.listdir('arch'):
287 if os.path.exists(os.path.join('arch', arch, 'Makefile')):
290 # arm64 is a special case
291 archs.append('aarch64')
294 env = 'CROSS_COMPILE_' + arch.upper()
295 cross_compile = os.environ.get(env)
297 CROSS_COMPILE[arch] = cross_compile
299 def cleanup_one_header(header_path, patterns, dry_run):
300 """Clean regex-matched lines away from a file.
303 header_path: path to the cleaned file.
304 patterns: list of regex patterns. Any lines matching to these
305 patterns are deleted.
306 dry_run: make no changes, but still display log.
308 with open(header_path) as f:
309 lines = f.readlines()
312 for i, line in enumerate(lines):
313 for pattern in patterns:
314 m = pattern.search(line)
316 print '%s: %s: %s' % (header_path, i + 1, line),
320 if dry_run or not matched:
323 with open(header_path, 'w') as f:
324 for i, line in enumerate(lines):
328 def cleanup_headers(config_attrs, dry_run):
329 """Delete config defines from board headers.
332 config_attrs: A list of dictionaris, each of them includes the name,
333 the type, and the default value of the target config.
334 dry_run: make no changes, but still display log.
337 choice = raw_input('Clean up headers? [y/n]: ').lower()
339 if choice == 'y' or choice == 'n':
346 for config_attr in config_attrs:
347 config = config_attr['config']
348 patterns.append(re.compile(r'#\s*define\s+%s\W' % config))
349 patterns.append(re.compile(r'#\s*undef\s+%s\W' % config))
351 for dir in 'include', 'arch', 'board':
352 for (dirpath, dirnames, filenames) in os.walk(dir):
353 for filename in filenames:
354 if not fnmatch.fnmatch(filename, '*~'):
355 cleanup_one_header(os.path.join(dirpath, filename),
361 """A parser of .config and include/autoconf.mk."""
363 re_arch = re.compile(r'CONFIG_SYS_ARCH="(.*)"')
364 re_cpu = re.compile(r'CONFIG_SYS_CPU="(.*)"')
366 def __init__(self, config_attrs, options, build_dir):
367 """Create a new parser.
370 config_attrs: A list of dictionaris, each of them includes the name,
371 the type, and the default value of the target config.
372 options: option flags.
373 build_dir: Build directory.
375 self.config_attrs = config_attrs
376 self.options = options
377 self.build_dir = build_dir
379 def get_cross_compile(self):
380 """Parse .config file and return CROSS_COMPILE.
383 A string storing the compiler prefix for the architecture.
387 dotconfig = os.path.join(self.build_dir, '.config')
388 for line in open(dotconfig):
389 m = self.re_arch.match(line)
393 m = self.re_cpu.match(line)
397 assert arch, 'Error: arch is not defined in %s' % defconfig
400 if arch == 'arm' and cpu == 'armv8':
403 return CROSS_COMPILE.get(arch, '')
405 def parse_one_config(self, config_attr, defconfig_lines, autoconf_lines):
406 """Parse .config, defconfig, include/autoconf.mk for one config.
408 This function looks for the config options in the lines from
409 defconfig, .config, and include/autoconf.mk in order to decide
410 which action should be taken for this defconfig.
413 config_attr: A dictionary including the name, the type,
414 and the default value of the target config.
415 defconfig_lines: lines from the original defconfig file.
416 autoconf_lines: lines from the include/autoconf.mk file.
419 A tupple of the action for this defconfig and the line
420 matched for the config.
422 config = config_attr['config']
423 not_set = '# %s is not set' % config
425 if config_attr['type'] in ('bool', 'tristate') and \
426 config_attr['default'] == 'n':
429 default = config + '=' + config_attr['default']
431 for line in defconfig_lines:
433 if line.startswith(config + '=') or line == not_set:
434 return (ACTION_ALREADY_EXIST, line)
436 if config_attr['type'] in ('bool', 'tristate'):
439 value = '(undefined)'
441 for line in autoconf_lines:
443 if line.startswith(config + '='):
448 action = ACTION_DEFAULT_VALUE
449 elif value == '(undefined)':
450 action = ACTION_UNDEFINED
454 return (action, value)
456 def update_defconfig(self, defconfig):
457 """Parse files for the config options and update the defconfig.
459 This function parses the given defconfig, the generated .config
460 and include/autoconf.mk searching the target options.
461 Move the config option(s) to the defconfig or do nothing if unneeded.
462 Also, display the log to show what happened to this defconfig.
465 defconfig: defconfig name.
468 defconfig_path = os.path.join('configs', defconfig)
469 dotconfig_path = os.path.join(self.build_dir, '.config')
470 autoconf_path = os.path.join(self.build_dir, 'include', 'autoconf.mk')
473 with open(defconfig_path) as f:
474 defconfig_lines = f.readlines()
476 with open(autoconf_path) as f:
477 autoconf_lines = f.readlines()
479 for config_attr in self.config_attrs:
480 result = self.parse_one_config(config_attr, defconfig_lines,
482 results.append(result)
486 for (action, value) in results:
487 if action == ACTION_MOVE:
488 actlog = "Move '%s'" % value
489 log_color = COLOR_LIGHT_GREEN
490 elif action == ACTION_DEFAULT_VALUE:
491 actlog = "Default value '%s'. Do nothing." % value
492 log_color = COLOR_LIGHT_BLUE
493 elif action == ACTION_ALREADY_EXIST:
494 actlog = "'%s' already defined in Kconfig. Do nothing." % value
495 log_color = COLOR_LIGHT_PURPLE
496 elif action == ACTION_UNDEFINED:
497 actlog = "Undefined. Do nothing."
498 log_color = COLOR_DARK_GRAY
500 sys.exit("Internal Error. This should not happen.")
502 log += log_msg(self.options.color, log_color, defconfig, actlog)
504 # Some threads are running in parallel.
505 # Print log in one shot to not mix up logs from different threads.
508 if not self.options.dry_run:
509 with open(dotconfig_path, 'a') as f:
510 for (action, value) in results:
511 if action == ACTION_MOVE:
512 f.write(value + '\n')
514 os.remove(os.path.join(self.build_dir, 'include', 'config', 'auto.conf'))
515 os.remove(autoconf_path)
519 """A slot to store a subprocess.
521 Each instance of this class handles one subprocess.
522 This class is useful to control multiple threads
523 for faster processing.
526 def __init__(self, config_attrs, options, devnull, make_cmd):
527 """Create a new process slot.
530 config_attrs: A list of dictionaris, each of them includes the name,
531 the type, and the default value of the target config.
532 options: option flags.
533 devnull: A file object of '/dev/null'.
534 make_cmd: command name of GNU Make.
536 self.options = options
537 self.build_dir = tempfile.mkdtemp()
538 self.devnull = devnull
539 self.make_cmd = (make_cmd, 'O=' + self.build_dir)
540 self.parser = KconfigParser(config_attrs, options, self.build_dir)
541 self.state = STATE_IDLE
542 self.failed_boards = []
545 """Delete the working directory
547 This function makes sure the temporary directory is cleaned away
548 even if Python suddenly dies due to error. It should be done in here
549 because it is guranteed the destructor is always invoked when the
550 instance of the class gets unreferenced.
552 If the subprocess is still running, wait until it finishes.
554 if self.state != STATE_IDLE:
555 while self.ps.poll() == None:
557 shutil.rmtree(self.build_dir)
559 def add(self, defconfig):
560 """Assign a new subprocess for defconfig and add it to the slot.
562 If the slot is vacant, create a new subprocess for processing the
563 given defconfig and add it to the slot. Just returns False if
564 the slot is occupied (i.e. the current subprocess is still running).
567 defconfig: defconfig name.
570 Return True on success or False on failure
572 if self.state != STATE_IDLE:
574 cmd = list(self.make_cmd)
575 cmd.append(defconfig)
576 self.ps = subprocess.Popen(cmd, stdout=self.devnull)
577 self.defconfig = defconfig
578 self.state = STATE_DEFCONFIG
582 """Check the status of the subprocess and handle it as needed.
584 Returns True if the slot is vacant (i.e. in idle state).
585 If the configuration is successfully finished, assign a new
586 subprocess to build include/autoconf.mk.
587 If include/autoconf.mk is generated, invoke the parser to
588 parse the .config and the include/autoconf.mk, and then set the
589 slot back to the idle state.
592 Return True if the subprocess is terminated, False otherwise
594 if self.state == STATE_IDLE:
597 if self.ps.poll() == None:
600 if self.ps.poll() != 0:
602 print >> sys.stderr, log_msg(self.options.color,
605 "failed to process.")
606 if self.options.exit_on_error:
607 sys.exit("Exit on error.")
609 # If --exit-on-error flag is not set,
610 # skip this board and continue.
611 # Record the failed board.
612 self.failed_boards.append(self.defconfig)
613 self.state = STATE_IDLE
616 if self.state == STATE_AUTOCONF:
617 self.parser.update_defconfig(self.defconfig)
619 """Save off the defconfig in a consistent way"""
620 cmd = list(self.make_cmd)
621 cmd.append('savedefconfig')
622 self.ps = subprocess.Popen(cmd, stdout=self.devnull,
624 self.state = STATE_SAVEDEFCONFIG
627 if self.state == STATE_SAVEDEFCONFIG:
628 defconfig_path = os.path.join(self.build_dir, 'defconfig')
629 shutil.move(defconfig_path,
630 os.path.join('configs', self.defconfig))
631 self.state = STATE_IDLE
634 cross_compile = self.parser.get_cross_compile()
635 cmd = list(self.make_cmd)
637 cmd.append('CROSS_COMPILE=%s' % cross_compile)
638 cmd.append('KCONFIG_IGNORE_DUPLICATES=1')
639 cmd.append('include/config/auto.conf')
640 self.ps = subprocess.Popen(cmd, stdout=self.devnull)
641 self.state = STATE_AUTOCONF
644 def get_failed_boards(self):
645 """Returns a list of failed boards (defconfigs) in this slot.
647 return self.failed_boards
651 """Controller of the array of subprocess slots."""
653 def __init__(self, config_attrs, options):
654 """Create a new slots controller.
657 config_attrs: A list of dictionaris containing the name, the type,
658 and the default value of the target CONFIG.
659 options: option flags.
661 self.options = options
663 devnull = get_devnull()
664 make_cmd = get_make_cmd()
665 for i in range(options.jobs):
666 self.slots.append(Slot(config_attrs, options, devnull, make_cmd))
668 def add(self, defconfig):
669 """Add a new subprocess if a vacant slot is found.
672 defconfig: defconfig name to be put into.
675 Return True on success or False on failure
677 for slot in self.slots:
678 if slot.add(defconfig):
683 """Check if there is a vacant slot.
686 Return True if at lease one vacant slot is found, False otherwise.
688 for slot in self.slots:
694 """Check if all slots are vacant.
697 Return True if all the slots are vacant, False otherwise.
700 for slot in self.slots:
705 def show_failed_boards(self):
706 """Display all of the failed boards (defconfigs)."""
709 for slot in self.slots:
710 failed_boards += slot.get_failed_boards()
712 if len(failed_boards) > 0:
713 msg = [ "The following boards were not processed due to error:" ]
716 print >> sys.stderr, color_text(self.options.color,
717 COLOR_LIGHT_RED, line)
719 def move_config(config_attrs, options):
720 """Move config options to defconfig files.
723 config_attrs: A list of dictionaris, each of them includes the name,
724 the type, and the default value of the target config.
725 options: option flags
727 if len(config_attrs) == 0:
728 print 'Nothing to do. exit.'
731 print 'Move the following CONFIG options (jobs: %d)' % options.jobs
732 for config_attr in config_attrs:
733 print ' %s (type: %s, default: %s)' % (config_attr['config'],
735 config_attr['default'])
737 if options.defconfigs:
738 defconfigs = [line.strip() for line in open(options.defconfigs)]
739 for i, defconfig in enumerate(defconfigs):
740 if not defconfig.endswith('_defconfig'):
741 defconfigs[i] = defconfig + '_defconfig'
742 if not os.path.exists(os.path.join('configs', defconfigs[i])):
743 sys.exit('%s - defconfig does not exist. Stopping.' %
746 # All the defconfig files to be processed
748 for (dirpath, dirnames, filenames) in os.walk('configs'):
749 dirpath = dirpath[len('configs') + 1:]
750 for filename in fnmatch.filter(filenames, '*_defconfig'):
751 defconfigs.append(os.path.join(dirpath, filename))
753 slots = Slots(config_attrs, options)
755 # Main loop to process defconfig files:
756 # Add a new subprocess into a vacant slot.
757 # Sleep if there is no available slot.
758 for defconfig in defconfigs:
759 while not slots.add(defconfig):
760 while not slots.available():
761 # No available slot: sleep for a while
762 time.sleep(SLEEP_TIME)
764 # wait until all the subprocesses finish
765 while not slots.empty():
766 time.sleep(SLEEP_TIME)
768 slots.show_failed_boards()
770 def bad_recipe(filename, linenum, msg):
771 """Print error message with the file name and the line number and exit."""
772 sys.exit("%s: line %d: error : " % (filename, linenum) + msg)
774 def parse_recipe(filename):
775 """Parse the recipe file and retrieve the config attributes.
777 This function parses the given recipe file and gets the name,
778 the type, and the default value of the target config options.
781 filename: path to file to be parsed.
783 A list of dictionaris, each of them includes the name,
784 the type, and the default value of the target config.
789 for line in open(filename):
790 tokens = line.split()
792 bad_recipe(filename, linenum,
793 "%d fields in this line. Each line must contain 3 fields"
796 (config, type, default) = tokens
798 # prefix the option name with CONFIG_ if missing
799 if not config.startswith('CONFIG_'):
800 config = 'CONFIG_' + config
802 # sanity check of default values
804 if not default in ('y', 'n'):
805 bad_recipe(filename, linenum,
806 "default for bool type must be either y or n")
807 elif type == 'tristate':
808 if not default in ('y', 'm', 'n'):
809 bad_recipe(filename, linenum,
810 "default for tristate type must be y, m, or n")
811 elif type == 'string':
812 if default[0] != '"' or default[-1] != '"':
813 bad_recipe(filename, linenum,
814 "default for string type must be surrounded by double-quotations")
819 bad_recipe(filename, linenum,
820 "type is int, but default value is not decimal")
822 if len(default) < 2 or default[:2] != '0x':
823 bad_recipe(filename, linenum,
824 "default for hex type must be prefixed with 0x")
828 bad_recipe(filename, linenum,
829 "type is hex, but default value is not hexadecimal")
831 bad_recipe(filename, linenum,
832 "unsupported type '%s'. type must be one of bool, tristate, string, int, hex"
835 config_attrs.append({'config': config, 'type': type, 'default': default})
842 cpu_count = multiprocessing.cpu_count()
843 except NotImplementedError:
846 parser = optparse.OptionParser()
848 parser.add_option('-c', '--color', action='store_true', default=False,
849 help='display the log in color')
850 parser.add_option('-d', '--defconfigs', type='string',
851 help='a file containing a list of defconfigs to move')
852 parser.add_option('-n', '--dry-run', action='store_true', default=False,
853 help='perform a trial run (show log with no changes)')
854 parser.add_option('-e', '--exit-on-error', action='store_true',
856 help='exit immediately on any error')
857 parser.add_option('-H', '--headers-only', dest='cleanup_headers_only',
858 action='store_true', default=False,
859 help='only cleanup the headers')
860 parser.add_option('-j', '--jobs', type='int', default=cpu_count,
861 help='the number of jobs to run simultaneously')
862 parser.usage += ' recipe_file\n\n' + \
863 'The recipe_file should describe config options you want to move.\n' + \
864 'Each line should contain config_name, type, default_value\n\n' + \
866 'CONFIG_FOO bool n\n' + \
867 'CONFIG_BAR int 100\n' + \
868 'CONFIG_BAZ string "hello"\n'
870 (options, args) = parser.parse_args()
876 config_attrs = parse_recipe(args[0])
878 update_cross_compile()
880 check_top_directory()
882 if not options.cleanup_headers_only:
883 move_config(config_attrs, options)
885 cleanup_headers(config_attrs, options.dry_run)
887 if __name__ == '__main__':