summaryrefslogtreecommitdiff
path: root/test/py/u_boot_console_sandbox.py
blob: 3de0fe4a3b6df831239b9825c06dcfd789e676db (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
# Copyright (c) 2015 Stephen Warren
# Copyright (c) 2015-2016, NVIDIA CORPORATION. All rights reserved.
#
# SPDX-License-Identifier: GPL-2.0

# Logic to interact with the sandbox port of U-Boot, running as a sub-process.

import time
from u_boot_spawn import Spawn
from u_boot_console_base import ConsoleBase

class ConsoleSandbox(ConsoleBase):
    """Represents a connection to a sandbox U-Boot console, executed as a sub-
    process."""

    def __init__(self, log, config):
        """Initialize a U-Boot console connection.

        Args:
            log: A multiplexed_log.Logfile instance.
            config: A "configuration" object as defined in conftest.py.

        Returns:
            Nothing.
        """

        super(ConsoleSandbox, self).__init__(log, config, max_fifo_fill=1024)

    def get_spawn(self):
        """Connect to a fresh U-Boot instance.

        A new sandbox process is created, so that U-Boot begins running from
        scratch.

        Args:
            None.

        Returns:
            A u_boot_spawn.Spawn object that is attached to U-Boot.
        """

        cmd = []
        if self.config.gdbserver:
            cmd += ['gdbserver', self.config.gdbserver]
        cmd += [
            self.config.build_dir + '/u-boot',
            '-d',
            self.config.build_dir + '/arch/sandbox/dts/test.dtb'
        ]
        return Spawn(cmd, cwd=self.config.source_dir)

    def kill(self, sig):
        """Send a specific Unix signal to the sandbox process.

        Args:
            sig: The Unix signal to send to the process.

        Returns:
            Nothing.
        """

        self.log.action('kill %d' % sig)
        self.p.kill(sig)

    def validate_exited(self):
        """Determine whether the sandbox process has exited.

        If required, this function waits a reasonable time for the process to
        exit.

        Args:
            None.

        Returns:
            Boolean indicating whether the process has exited.
        """

        p = self.p
        self.p = None
        for i in xrange(100):
            ret = not p.isalive()
            if ret:
                break
            time.sleep(0.1)
        p.close()
        return ret