mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-08 04:06:15 +09:00
d201506cca
This tool aims to test U-Boot by executing U-Boot shell commands using the console interface. A single top-level script exists to execute or attach to the U-Boot console, run the entire script of tests against it, and summarize the results. Advantages of this approach are: - Testing is performed in the same way a user or script would interact with U-Boot; there can be no disconnect. - There is no need to write or embed test-related code into U-Boot itself. It is asserted that writing test-related code in Python is simpler and more flexible that writing it all in C. - It is reasonably simple to interact with U-Boot in this way. A few simple tests are provided as examples. Soon, we should convert as many as possible of the other tests in test/* and test/cmd_ut.c too. The hook scripts, relay control utilities, and udev rules I use for my own HW setup are published at https://github.com/swarren/uboot-test-hooks. See README.md for more details! Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Stephen Warren <swarren@nvidia.com> Tested-by: Michal Simek <michal.simek@xilinx.com> Tested-by: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org> #v3
66 lines
2.2 KiB
Python
66 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 U-Boot running on real hardware, typically via a
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# physical serial port.
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import sys
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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 ConsoleExecAttach(ConsoleBase):
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'''Represents a physical connection to a U-Boot console, typically via a
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serial port. This implementation executes a sub-process to attach to the
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console, expecting that the stdin/out of the sub-process will be forwarded
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to/from the physical hardware. This approach isolates the test infra-
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structure from the user-/installation-specific details of how to
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communicate with, and the identity of, serial ports etc.'''
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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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# The max_fifo_fill value might need tweaking per-board/-SoC?
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# 1 would be safe anywhere, but is very slow (a pexpect issue?).
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# 16 is a common FIFO size.
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# HW flow control would mean this could be infinite.
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super(ConsoleExecAttach, self).__init__(log, config, max_fifo_fill=16)
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self.log.action('Flashing U-Boot')
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cmd = ['u-boot-test-flash', config.board_type, config.board_identity]
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runner = self.log.get_runner(cmd[0], sys.stdout)
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runner.run(cmd)
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runner.close()
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def get_spawn(self):
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'''Connect to a fresh U-Boot instance.
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The target board is reset, so that U-Boot begins running from 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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args = [self.config.board_type, self.config.board_identity]
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s = Spawn(['u-boot-test-console'] + args)
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self.log.action('Resetting board')
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cmd = ['u-boot-test-reset'] + args
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runner = self.log.get_runner(cmd[0], sys.stdout)
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runner.run(cmd)
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runner.close()
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return s
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