6e6d37f7f9
* provide module docstring Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Simon Glass <sjg@chromium.org>
111 lines
2.8 KiB
Python
111 lines
2.8 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 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)
|
|
self.sandbox_flags = []
|
|
|
|
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.
|
|
"""
|
|
|
|
bcfg = self.config.buildconfig
|
|
config_spl = bcfg.get('config_spl', 'n') == 'y'
|
|
fname = '/spl/u-boot-spl' if config_spl else '/u-boot'
|
|
print(fname)
|
|
cmd = []
|
|
if self.config.gdbserver:
|
|
cmd += ['gdbserver', self.config.gdbserver]
|
|
cmd += [
|
|
self.config.build_dir + fname,
|
|
'-v',
|
|
'-d',
|
|
self.config.dtb
|
|
]
|
|
cmd += self.sandbox_flags
|
|
return Spawn(cmd, cwd=self.config.source_dir)
|
|
|
|
def restart_uboot_with_flags(self, flags):
|
|
"""Run U-Boot with the given command-line flags
|
|
|
|
Args:
|
|
flags: List of flags to pass, each a string
|
|
|
|
Returns:
|
|
A u_boot_spawn.Spawn object that is attached to U-Boot.
|
|
"""
|
|
|
|
try:
|
|
self.sandbox_flags = flags
|
|
return self.restart_uboot()
|
|
finally:
|
|
self.sandbox_flags = []
|
|
|
|
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 range(100):
|
|
ret = not p.isalive()
|
|
if ret:
|
|
break
|
|
time.sleep(0.1)
|
|
p.close()
|
|
return ret
|