143 lines
4.8 KiB
Python
143 lines
4.8 KiB
Python
#!/usr/bin/env python
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#############################################################################
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# Celestica
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#
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# Module contains an implementation of SONiC Platform Base API and
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# provides the Chassis information which are available in the platform
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#
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#############################################################################
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import sys
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import re
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import os
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import subprocess
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import json
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try:
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from sonic_platform_base.chassis_base import ChassisBase
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from sonic_platform.fan import Fan
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from sonic_platform.psu import Psu
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from sonic_platform.component import Component
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from sonic_platform.watchdog import Watchdog
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from sonic_platform.thermal import Thermal
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except ImportError as e:
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raise ImportError(str(e) + "- required module not found")
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NUM_FAN = 3
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NUM_PSU = 2
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NUM_THERMAL = 7
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CONFIG_DB_PATH = "/etc/sonic/config_db.json"
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RESET_REGISTER = "0x112"
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REBOOT_CAUSE_PATH = "/host/reboot-cause/previous-reboot-cause.txt"
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COMPONENT_NAME_LIST = ["SMC_CPLD", "MMC_CPLD", "BIOS"]
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class Chassis(ChassisBase):
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"""Platform-specific Chassis class"""
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def __init__(self):
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self.config_data = {}
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for index in range(0, NUM_FAN):
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fan = Fan(index)
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self._fan_list.append(fan)
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for index in range(0, NUM_PSU):
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psu = Psu(index)
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self._psu_list.append(psu)
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for index in range(0, NUM_THERMAL):
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thermal = Thermal(index)
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self._thermal_list.append(thermal)
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ChassisBase.__init__(self)
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self._component_name_list = COMPONENT_NAME_LIST
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self._watchdog = Watchdog()
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def __read_config_db(self):
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try:
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with open(CONFIG_DB_PATH, 'r') as fd:
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data = json.load(fd)
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return data
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except IOError:
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raise IOError("Unable to open config_db file !")
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def __read_txt_file(self, file_path):
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try:
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with open(file_path, 'r') as fd:
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data = fd.read()
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return data.strip()
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except IOError:
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raise IOError("Unable to open %s file !" % file_path)
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def get_base_mac(self):
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"""
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Retrieves the base MAC address for the chassis
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Returns:
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A string containing the MAC address in the format
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'XX:XX:XX:XX:XX:XX'
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"""
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try:
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self.config_data = self.__read_config_db()
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base_mac = self.config_data["DEVICE_METADATA"]["localhost"]["mac"]
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return str(base_mac)
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except KeyError:
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return str(None)
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def get_firmware_version(self, component_name):
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"""
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Retrieves platform-specific hardware/firmware versions for chassis
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componenets such as BIOS, CPLD, FPGA, etc.
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Args:
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type: A string, component name
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Returns:
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A string containing platform-specific component versions
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"""
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self.component = Component(component_name)
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if component_name not in self._component_name_list:
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return None
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return self.component.get_firmware_version()
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def install_component_firmware(self, component_name, image_path):
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"""
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Install firmware to module
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Args:
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type: A string, component name.
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image_path: A string, path to firmware image.
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Returns:
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A boolean, True if install successfully, False if not
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"""
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self.component = Component(component_name)
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if component_name not in self._component_name_list:
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return False
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return self.component.upgrade_firmware(image_path)
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def get_reboot_cause(self):
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"""
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Retrieves the cause of the previous reboot
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Returns:
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A tuple (string, string) where the first element is a string
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containing the cause of the previous reboot. This string must be
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one of the predefined strings in this class. If the first string
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is "REBOOT_CAUSE_HARDWARE_OTHER", the second string can be used
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to pass a description of the reboot cause.
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"""
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self.component = Component("SMC_CPLD")
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description = 'None'
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reboot_cause = self.REBOOT_CAUSE_HARDWARE_OTHER
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hw_reboot_cause = self.component.get_register_value(RESET_REGISTER)
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sw_reboot_cause = self.__read_txt_file(REBOOT_CAUSE_PATH)
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if sw_reboot_cause != "Unexpected reboot":
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reboot_cause = self.REBOOT_CAUSE_NON_HARDWARE
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description = sw_reboot_cause
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elif hw_reboot_cause == "0x11":
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reboot_cause = self.REBOOT_CAUSE_POWER_LOSS
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elif hw_reboot_cause == "0x33" or hw_reboot_cause == "0x55":
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reboot_cause = self.REBOOT_CAUSE_WATCHDOG
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else:
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reboot_cause = self.REBOOT_CAUSE_HARDWARE_OTHER
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description = 'Unknown reason'
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return (reboot_cause, description)
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