mirror of
https://github.com/smaeul/u-boot.git
synced 2025-10-26 09:38:14 +00:00
2b5e710859
* provide module docstring Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Simon Glass <sjg@chromium.org>
73 lines
2.4 KiB
Python
73 lines
2.4 KiB
Python
# SPDX-License-Identifier: GPL-2.0
|
|
# Copyright (c) 2015 Stephen Warren
|
|
# Copyright (c) 2015-2016, NVIDIA CORPORATION. All rights reserved.
|
|
|
|
"""
|
|
Logic to interact with U-Boot running on real hardware, typically via a
|
|
physical serial port.
|
|
"""
|
|
|
|
import sys
|
|
from u_boot_spawn import Spawn
|
|
from u_boot_console_base import ConsoleBase
|
|
|
|
class ConsoleExecAttach(ConsoleBase):
|
|
"""Represents a physical connection to a U-Boot console, typically via a
|
|
serial port. This implementation executes a sub-process to attach to the
|
|
console, expecting that the stdin/out of the sub-process will be forwarded
|
|
to/from the physical hardware. This approach isolates the test infra-
|
|
structure from the user-/installation-specific details of how to
|
|
communicate with, and the identity of, serial ports etc."""
|
|
|
|
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.
|
|
"""
|
|
|
|
# The max_fifo_fill value might need tweaking per-board/-SoC?
|
|
# 1 would be safe anywhere, but is very slow (a pexpect issue?).
|
|
# 16 is a common FIFO size.
|
|
# HW flow control would mean this could be infinite.
|
|
super(ConsoleExecAttach, self).__init__(log, config, max_fifo_fill=16)
|
|
|
|
with self.log.section('flash'):
|
|
self.log.action('Flashing U-Boot')
|
|
cmd = ['u-boot-test-flash', config.board_type, config.board_identity]
|
|
runner = self.log.get_runner(cmd[0], sys.stdout)
|
|
runner.run(cmd)
|
|
runner.close()
|
|
self.log.status_pass('OK')
|
|
|
|
def get_spawn(self):
|
|
"""Connect to a fresh U-Boot instance.
|
|
|
|
The target board is reset, so that U-Boot begins running from scratch.
|
|
|
|
Args:
|
|
None.
|
|
|
|
Returns:
|
|
A u_boot_spawn.Spawn object that is attached to U-Boot.
|
|
"""
|
|
|
|
args = [self.config.board_type, self.config.board_identity]
|
|
s = Spawn(['u-boot-test-console'] + args)
|
|
|
|
try:
|
|
self.log.action('Resetting board')
|
|
cmd = ['u-boot-test-reset'] + args
|
|
runner = self.log.get_runner(cmd[0], sys.stdout)
|
|
runner.run(cmd)
|
|
runner.close()
|
|
except:
|
|
s.close()
|
|
raise
|
|
|
|
return s
|