136 lines
4.9 KiB
Python
Executable File
136 lines
4.9 KiB
Python
Executable File
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""Add a new variant to the Kconfig and Kconfig.name for the baseboard
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To start a new variant of an existing baseboard, we need to add
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the variant into the Kconfig and Kconfig.name files for the
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baseboard. In Kconfig, we have two sections that need additional
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entries, MAINBOARD_PART_NUMBER and VARIANT_DIR.
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The MAINBOARD_PART_NUMBER and VARIANT_DIR just use various
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capitalizations of the variant name to create the strings.
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Kconfig.name adds an entire section for the new variant, and all
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of these use various capitalizations of the variant name. The strings
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in this section are SOC-specific, so we'll need versions for each
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SOC that we support.
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Copyright 2019 Google LLC.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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"""
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from __future__ import print_function
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import argparse
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import sys
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def main():
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parser = argparse.ArgumentParser(
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description='Add strings to coreboot Kconfig for a new board variant')
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parser.add_argument('--board', type=str, required=True,
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help='Name of the baseboard')
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parser.add_argument('--variant', type=str, required=True,
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help='Name of the board variant')
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args = parser.parse_args()
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if args.board not in ['hatch', 'volteer']:
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print('Unsupported baseboard "' + args.board + '"')
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sys.exit(1)
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add_to_Kconfig(args.variant)
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add_to_Kconfig_name(args.board, args.variant)
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def add_to_Kconfig(variant_name):
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"""Add options for the variant to the Kconfig
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Open the Kconfig file and read it line-by-line. When we detect that we're
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in one of the sections of interest, wait until we get a blank line
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(signalling the end of that section), and then add our new line before
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the blank line. The updated lines are written out to Kconfig.new in the
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same directory as Kconfig.
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variant_name The name of the board variant, e.g. 'kohaku'
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"""
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# These are the part of the strings that we'll add to the sections
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BOARD = 'BOARD_GOOGLE_' + variant_name.upper()
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lowercase = variant_name.lower()
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capitalized = lowercase.capitalize()
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# These flags track whether we're in a section where we need to add an option
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in_mainboard_part_number = False
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in_variant_dir = False
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inputname = 'Kconfig'
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outputname = 'Kconfig.new'
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with open(outputname, 'w') as outfile:
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with open(inputname, 'r') as infile:
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for rawline in infile:
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line = rawline.rstrip('\r\n')
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# Are we in one of the sections of interest?
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if line == 'config MAINBOARD_PART_NUMBER':
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in_mainboard_part_number = True
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if line == 'config VARIANT_DIR':
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in_variant_dir = True
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# Are we at the end of a section, and if so, is it one of the
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# sections of interest?
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if line == '':
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if in_mainboard_part_number:
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print('\tdefault "' + capitalized + '" if ' + BOARD, file=outfile)
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in_mainboard_part_number = False
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if in_variant_dir:
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print('\tdefault "' + lowercase + '" if ' + BOARD, file=outfile)
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in_variant_dir = False
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print(line, file=outfile)
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def add_to_Kconfig_name(baseboard_name, variant_name):
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"""Add a config section for the variant to the Kconfig.name
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Kconfig.name is easier to modify than Kconfig; it only has a block at
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the end with the new variant's details.
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baseboard_name The name of the baseboard, e.g. 'hatch'
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We expect the caller to have checked that it is one we support
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variant_name The name of the board variant, e.g. 'kohaku'
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"""
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# Board name for the config section
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uppercase = variant_name.upper()
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capitalized = variant_name.lower().capitalize()
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inputname = 'Kconfig.name'
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outputname = 'Kconfig.name.new'
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with open(outputname, 'w') as outfile:
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with open(inputname, 'r') as infile:
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# Copy all input lines to output
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for rawline in infile:
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line = rawline.rstrip('\r\n')
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print(line, file=outfile)
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# Now add the new section
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if baseboard_name == 'hatch':
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print('\nconfig ' + 'BOARD_GOOGLE_' + uppercase, file=outfile)
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print('\tbool "-> ' + capitalized + '"', file=outfile)
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print('\tselect BOARD_GOOGLE_BASEBOARD_HATCH', file=outfile)
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print('\tselect BOARD_ROMSIZE_KB_16384', file=outfile)
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if baseboard_name == 'volteer':
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print('\nconfig ' + 'BOARD_GOOGLE_' + uppercase, file=outfile)
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print('\tbool "-> ' + capitalized + '"', file=outfile)
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print('\tselect BOARD_GOOGLE_BASEBOARD_VOLTEER', file=outfile)
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if __name__ == '__main__':
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main()
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