| # |
| # Copyright (c) 2018-2019 Linaro |
| # Copyright (c) 2019 Nordic Semiconductor ASA |
| # |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| import os |
| |
| # Types we support |
| # 'string', 'int', 'hex', 'bool' |
| |
| doc_mode = os.environ.get('KCONFIG_DOC_MODE') == "1" |
| bin_dir = os.environ.get('PROJECT_BINARY_DIR') |
| conf_file = os.path.join(bin_dir, 'include', 'generated', |
| 'generated_dts_board.conf') if bin_dir else None |
| |
| dt_defines = {} |
| if (not doc_mode) and conf_file and os.path.isfile(conf_file): |
| with open(conf_file, 'r', encoding='utf-8') as fd: |
| for line in fd: |
| if '=' in line: |
| define, val = line.split('=') |
| dt_defines[define] = val.strip() |
| |
| def _dt_units_to_scale(unit): |
| if not unit: |
| return 0 |
| if unit in {'k', 'K'}: |
| return 10 |
| if unit in {'m', 'M'}: |
| return 20 |
| if unit in {'g', 'G'}: |
| return 30 |
| |
| def dt_int_val(kconf, _, name, unit=None): |
| """ |
| This function looks up 'name' in the DTS generated "conf" style database |
| and if its found it will return the value as an decimal integer. The |
| function will divide the value based on 'unit': |
| None No division |
| 'k' or 'K' divide by 1024 (1 << 10) |
| 'm' or 'M' divide by 1,048,576 (1 << 20) |
| 'g' or 'G' divide by 1,073,741,824 (1 << 30) |
| """ |
| if doc_mode or name not in dt_defines: |
| return "0" |
| |
| d = dt_defines[name] |
| if d.startswith(('0x', '0X')): |
| d = int(d, 16) |
| else: |
| d = int(d) |
| d >>= _dt_units_to_scale(unit) |
| |
| return str(d) |
| |
| def dt_hex_val(kconf, _, name, unit=None): |
| """ |
| This function looks up 'name' in the DTS generated "conf" style database |
| and if its found it will return the value as an hex integer. The |
| function will divide the value based on 'unit': |
| None No division |
| 'k' or 'K' divide by 1024 (1 << 10) |
| 'm' or 'M' divide by 1,048,576 (1 << 20) |
| 'g' or 'G' divide by 1,073,741,824 (1 << 30) |
| """ |
| if doc_mode or name not in dt_defines: |
| return "0x0" |
| |
| d = dt_defines[name] |
| if d.startswith(('0x', '0X')): |
| d = int(d, 16) |
| else: |
| d = int(d) |
| d >>= _dt_units_to_scale(unit) |
| |
| return hex(d) |
| |
| |
| functions = { |
| "dt_int_val": (dt_int_val, 1, 2), |
| "dt_hex_val": (dt_hex_val, 1, 2), |
| } |
