87 lines
2.2 KiB
Python
87 lines
2.2 KiB
Python
# Copyright (c) 2015 Stephen Warren
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# Copyright (c) 2015-2016, NVIDIA CORPORATION. All rights reserved.
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#
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# SPDX-License-Identifier: GPL-2.0
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# Logic to interact with the sandbox port of U-Boot, running as a sub-process.
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import time
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from u_boot_spawn import Spawn
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from u_boot_console_base import ConsoleBase
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class ConsoleSandbox(ConsoleBase):
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"""Represents a connection to a sandbox U-Boot console, executed as a sub-
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process."""
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def __init__(self, log, config):
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"""Initialize a U-Boot console connection.
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Args:
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log: A multiplexed_log.Logfile instance.
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config: A "configuration" object as defined in conftest.py.
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Returns:
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Nothing.
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"""
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super(ConsoleSandbox, self).__init__(log, config, max_fifo_fill=1024)
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def get_spawn(self):
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"""Connect to a fresh U-Boot instance.
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A new sandbox process is created, so that U-Boot begins running from
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scratch.
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Args:
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None.
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Returns:
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A u_boot_spawn.Spawn object that is attached to U-Boot.
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"""
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cmd = []
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if self.config.gdbserver:
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cmd += ['gdbserver', self.config.gdbserver]
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cmd += [
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self.config.build_dir + '/u-boot',
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'-d',
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self.config.build_dir + '/arch/sandbox/dts/test.dtb'
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]
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return Spawn(cmd, cwd=self.config.source_dir)
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def kill(self, sig):
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"""Send a specific Unix signal to the sandbox process.
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Args:
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sig: The Unix signal to send to the process.
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Returns:
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Nothing.
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"""
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self.log.action('kill %d' % sig)
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self.p.kill(sig)
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def validate_exited(self):
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"""Determine whether the sandbox process has exited.
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If required, this function waits a reasonable time for the process to
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exit.
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Args:
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None.
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Returns:
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Boolean indicating whether the process has exited.
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"""
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p = self.p
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self.p = None
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for i in xrange(100):
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ret = not p.isalive()
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if ret:
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break
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time.sleep(0.1)
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p.close()
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return ret
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