u-boot/test/py/u_boot_console_exec_attach.py
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

70 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