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git.ipfire.org Git - people/ms/u-boot.git/blob - test/py/u_boot_console_exec_attach.py
1 # Copyright (c) 2015 Stephen Warren
2 # Copyright (c) 2015-2016, NVIDIA CORPORATION. All rights reserved.
4 # SPDX-License-Identifier: GPL-2.0
6 # Logic to interact with U-Boot running on real hardware, typically via a
7 # physical serial port.
10 from u_boot_spawn
import Spawn
11 from u_boot_console_base
import ConsoleBase
13 class ConsoleExecAttach(ConsoleBase
):
14 """Represents a physical connection to a U-Boot console, typically via a
15 serial port. This implementation executes a sub-process to attach to the
16 console, expecting that the stdin/out of the sub-process will be forwarded
17 to/from the physical hardware. This approach isolates the test infra-
18 structure from the user-/installation-specific details of how to
19 communicate with, and the identity of, serial ports etc."""
21 def __init__(self
, log
, config
):
22 """Initialize a U-Boot console connection.
25 log: A multiplexed_log.Logfile instance.
26 config: A "configuration" object as defined in conftest.py.
32 # The max_fifo_fill value might need tweaking per-board/-SoC?
33 # 1 would be safe anywhere, but is very slow (a pexpect issue?).
34 # 16 is a common FIFO size.
35 # HW flow control would mean this could be infinite.
36 super(ConsoleExecAttach
, self
).__init
__(log
, config
, max_fifo_fill
=16)
38 with self
.log
.section('flash'):
39 self
.log
.action('Flashing U-Boot')
40 cmd
= ['u-boot-test-flash', config
.board_type
, config
.board_identity
]
41 runner
= self
.log
.get_runner(cmd
[0], sys
.stdout
)
44 self
.log
.status_pass('OK')
47 """Connect to a fresh U-Boot instance.
49 The target board is reset, so that U-Boot begins running from scratch.
55 A u_boot_spawn.Spawn object that is attached to U-Boot.
58 args
= [self
.config
.board_type
, self
.config
.board_identity
]
59 s
= Spawn(['u-boot-test-console'] + args
)
62 self
.log
.action('Resetting board')
63 cmd
= ['u-boot-test-reset'] + args
64 runner
= self
.log
.get_runner(cmd
[0], sys
.stdout
)