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