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diff --git a/tools/reformat.py b/tools/reformat.py
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+#! /usr/bin/python
+########################################################################
+#
+# reorder and reformat a file in columns
+#
+# this utility takes lines from its standard input and reproduces them,
+# partially reordered and reformatted, on its standard output.
+#
+# It has the same effect as a 'sort | column -t', with the exception
+# that empty lines, as well as lines which start with a '#' sign, are
+# not affected, i.e. they keep their position and formatting, and act
+# as separators, i.e. the parts before and after them are each sorted
+# separately (but overall field widths are computed across the whole
+# input).
+#
+# Options:
+#   -i:
+#   --ignore-case:
+#	Do not consider case when sorting.
+#   -d:
+#   --default:
+#	What to chage empty fields to.
+#    -s <N>:
+#    --split=<N>:
+#       Treat only the first N whitespace sequences as separators.
+#       line content after the Nth separator will count as only one
+#       field even if it contains whitespace.
+#       Example : '-s 2' causes input 'a b c d e' to be split into
+#       three fields, 'a', 'b', and 'c d e'.
+#
+# boards.cfg requires -ids 6.
+#
+########################################################################
+
+import sys, getopt, locale
+
+# ensure we sort using the C locale.
+
+locale.setlocale(locale.LC_ALL, 'C')
+
+# check options
+
+maxsplit = 0
+ignore_case = 0
+default_field =''
+
+try:
+	opts, args = getopt.getopt(sys.argv[1:], "id:s:",
+		["ignore-case","default","split="])
+except getopt.GetoptError as err:
+	print str(err) # will print something like "option -a not recognized"
+        sys.exit(2)
+
+for o, a in opts:
+	if o in ("-s", "--split"):
+		maxsplit = eval(a)
+	elif o in ("-i", "--ignore-case"):
+		ignore_case = 1
+	elif o in ("-d", "--default"):
+		default_field = a
+	else:
+		assert False, "unhandled option"
+
+# collect all lines from standard input and, for the ones which must be
+# reformatted and sorted, count their fields and compute each field's
+# maximum size
+
+input_lines = []
+field_width = []
+
+for line in sys.stdin:
+	# remove final end of line
+	input_line = line.strip('\n')
+	if (len(input_line)>0) and (input_line[0] != '#'):
+		# sortable line: split into fields
+		fields = input_line.split(None,maxsplit)
+		# if there are new fields, top up field_widths
+		for f in range(len(field_width), len(fields)):
+			field_width.append(0)
+		# compute the maximum witdh of each field
+		for f in range(len(fields)):
+			field_width[f] = max(field_width[f],len(fields[f]))
+	# collect the line for next stage
+	input_lines.append(input_line)
+
+# run through collected input lines, collect the ones which must be
+# reformatted and sorted, and whenever a non-reformattable, non-sortable
+# line is met, sort the collected lines before it and append them to the
+# output lines, then add the non-sortable line too.
+
+output_lines = []
+sortable_lines = []
+for input_line in input_lines:
+	if (len(input_line)>0) and (input_line[0] != '#'):
+		# this line should be reformatted and sorted
+		input_fields = input_line.split(None,maxsplit)
+		output_fields = [];
+		# reformat each field to this field's column width
+		for f in range(len(input_fields)):
+			output_field = input_fields[f];
+			output_fields.append(output_field.ljust(field_width[f]))
+		# any missing field is set to default if it exists
+		if default_field != '':
+			for f in range(len(input_fields),len(field_width)):
+				output_fields.append(default_field.ljust(field_width[f]))
+		# join fields using two spaces, like column -t would
+		output_line = '  '.join(output_fields);
+		# collect line for later
+		sortable_lines.append(output_line)
+	else:
+		# this line is non-sortable
+		# sort collected sortable lines
+		if ignore_case!=0:
+			sortable_lines.sort(key=lambda x: str.lower(locale.strxfrm(x)))
+		else:
+			sortable_lines.sort(key=lambda x: locale.strxfrm(x))
+		# append sortable lines to the final output
+		output_lines.extend(sortable_lines)
+		sortable_lines = []
+		# append non-sortable line to the final output
+		output_lines.append(input_line)
+# maybe we had sortable lines pending, so append them to the final output
+if ignore_case!=0:
+	sortable_lines.sort(key=lambda x: str.lower(locale.strxfrm(x)))
+else:
+	sortable_lines.sort(key=lambda x: locale.strxfrm(x))
+output_lines.extend(sortable_lines)
+
+# run through output lines and print them, except rightmost whitespace
+
+for output_line in output_lines:
+	print output_line.rstrip()