Source code for labgrid.strategy.ubootstrategy

import enum

import attr

from ..factory import target_factory
from .common import Strategy, StrategyError


[docs]class Status(enum.Enum): unknown = 0 off = 1 uboot = 2 shell = 3
[docs]@target_factory.reg_driver @attr.s(eq=False) class UBootStrategy(Strategy): """UbootStrategy - Strategy to switch to uboot or shell""" bindings = { "power": "PowerProtocol", "console": "ConsoleProtocol", "uboot": "UBootDriver", "shell": "ShellDriver", } status = attr.ib(default=Status.unknown)
[docs] def __attrs_post_init__(self): super().__attrs_post_init__()
[docs] def transition(self, status): if not isinstance(status, Status): status = Status[status] if status == Status.unknown: raise StrategyError(f"can not transition to {status}") elif status == self.status: return # nothing to do elif status == Status.off: self.target.deactivate(self.console) self.target.activate(self.power) self.power.off() elif status == Status.uboot: self.transition(Status.off) # pylint: disable=missing-kwoa self.target.activate(self.console) # cycle power self.power.cycle() # interrupt uboot self.target.activate(self.uboot) elif status == Status.shell: # transition to uboot self.transition(Status.uboot) self.uboot.boot("") self.uboot.await_boot() self.target.activate(self.shell) self.shell.run("systemctl is-system-running --wait") else: raise StrategyError(f"no transition found from {self.status} to {status}") self.status = status