- # Copyright (c) 2014-2018 Adafruit Industries
- # Author: Tony DiCola, Limor Fried, Brennen Bearnes
-
- # Permission is hereby granted, free of charge, to any person obtaining a copy
- # of this software and associated documentation files (the "Software"), to deal
- # in the Software without restriction, including without limitation the rights
- # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- # copies of the Software, and to permit persons to whom the Software is
- # furnished to do so, subject to the following conditions:
-
- # The above copyright notice and this permission notice shall be included in all
- # copies or substantial portions of the Software.
-
- # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- # SOFTWARE.
-
- """
- Attempt to detect the current platform.
- """
- import re
-
- from adafruit_platformdetect.board import Board
- from adafruit_platformdetect.chip import Chip
-
-
- # Various methods here may retain state in future, so tell pylint not to worry
- # that they don't use self right now:
- # pylint: disable=no-self-use
- class Detector:
- """Wrap various platform detection functions."""
-
- def __init__(self):
- self.board = Board(self)
- self.chip = Chip(self)
-
- def get_cpuinfo_field(self, field):
- """
- Search /proc/cpuinfo for a field and return its value, if found,
- otherwise None.
- """
- # Match a line like 'Hardware : BCM2709':
- pattern = r"^" + field + r"\s+:\s+(.*)$"
-
- with open("/proc/cpuinfo", "r") as infile:
- cpuinfo = infile.read().split("\n")
- for line in cpuinfo:
- match = re.search(pattern, line, flags=re.IGNORECASE)
- if match:
- return match.group(1)
- return None
-
- def check_dt_compatible_value(self, value):
- """
- Search /proc/device-tree/compatible for a value and return True, if found,
- otherwise False.
- """
- # Match a value like 'qcom,apq8016-sbc':
- dt_compatible = self.get_device_compatible()
- if dt_compatible and value in dt_compatible:
- return True
-
- return False
-
- def get_armbian_release_field(self, field):
- """
- Search /etc/armbian-release, if it exists, for a field and return its
- value, if found, otherwise None.
- """
- field_value = None
-
- pattern = r"^" + field + r"=(.*)"
- try:
- with open("/etc/armbian-release", "r") as release_file:
- armbian = release_file.read().split("\n")
- for line in armbian:
- match = re.search(pattern, line)
- if match:
- field_value = match.group(1)
- except FileNotFoundError:
- pass
-
- return field_value
-
- def get_device_model(self):
- """
- Search /proc/device-tree/model for the device model and return its value, if found,
- otherwise None.
- """
- try:
- with open("/proc/device-tree/model", "r") as model_file:
- return model_file.read()
- except FileNotFoundError:
- pass
- return None
-
- def get_device_compatible(self):
- """
- Search /proc/device-tree/compatible for the compatible chip name.
- """
- try:
- with open("/proc/device-tree/compatible", "r") as model_file:
- return model_file.read()
- except FileNotFoundError:
- pass
- return None
-
- def check_board_asset_tag_value(self):
- """
- Search /sys/devices/virtual/dmi/id for the device model and return its value, if found,
- otherwise None.
- """
- try:
- with open("/sys/devices/virtual/dmi/id/board_asset_tag", "r") as tag_file:
- return tag_file.read().strip()
- except FileNotFoundError:
- pass
- return None
-
- def check_board_name_value(self):
- """
- Search /sys/devices/virtual/dmi/id for the board name and return its value, if found,
- otherwise None. Debian/ubuntu based
- """
- try:
- with open("/sys/devices/virtual/dmi/id/board_name", "r") as board_name_file:
- return board_name_file.read().strip()
- except FileNotFoundError:
- pass
- return None
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