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# Functional test that boots known good tuxboot images the same way
# that tuxrun (www.tuxrun.org) does. This tool is used by things like
# the LKFT project to run regression tests on kernels.
#
# Copyright (c) 2023 Linaro Ltd.
#
# Author:
# Alex Bennée <alex.bennee@linaro.org>
#
# SPDX-License-Identifier: GPL-2.0-or-later
import os
import time
import tempfile
from avocado import skip, skipUnless
from avocado_qemu import QemuSystemTest
from avocado_qemu import exec_command, exec_command_and_wait_for_pattern
from avocado_qemu import wait_for_console_pattern
from avocado.utils import process
from avocado.utils.path import find_command
class TuxRunBaselineTest(QemuSystemTest):
"""
:avocado: tags=accel:tcg
"""
KERNEL_COMMON_COMMAND_LINE = 'printk.time=0'
# Tests are ~10-40s, allow for --debug/--enable-gcov overhead
timeout = 100
def get_tag(self, tagname, default=None):
"""
Get the metadata tag or return the default.
"""
utag = self._get_unique_tag_val(tagname)
print(f"{tagname}/{default} -> {utag}")
if utag:
return utag
return default
def setUp(self):
super().setUp()
# We need zstd for all the tuxrun tests
# See https://github.com/avocado-framework/avocado/issues/5609
zstd = find_command('zstd', False)
if zstd is False:
self.cancel('Could not find "zstd", which is required to '
'decompress rootfs')
self.zstd = zstd
# Process the TuxRun specific tags, most machines work with
# reasonable defaults but we sometimes need to tweak the
# config. To avoid open coding everything we store all these
# details in the metadata for each test.
# The tuxboot tag matches the root directory
self.tuxboot = self.get_tag('tuxboot')
# Most Linux's use ttyS0 for their serial port
self.console = self.get_tag('console', "ttyS0")
# Does the machine shutdown QEMU nicely on "halt"
self.shutdown = self.get_tag('shutdown')
# The name of the kernel Image file
self.image = self.get_tag('image', "Image")
self.root = self.get_tag('root', "vda")
# Occasionally we need extra devices to hook things up
self.extradev = self.get_tag('extradev')
self.qemu_img = super().get_qemu_img()
def wait_for_console_pattern(self, success_message, vm=None):
wait_for_console_pattern(self, success_message,
failure_message='Kernel panic - not syncing',
vm=vm)
def fetch_tuxrun_assets(self, csums=None, dt=None):
"""
Fetch the TuxBoot assets. They are stored in a standard way so we
use the per-test tags to fetch details.
"""
base_url = f"https://storage.tuxboot.com/20230331/{self.tuxboot}/"
# empty hash if we weren't passed one
csums = {} if csums is None else csums
ksum = csums.get(self.image, None)
isum = csums.get("rootfs.ext4.zst", None)
kernel_image = self.fetch_asset(base_url + self.image,
asset_hash = ksum,
algorithm = "sha256")
disk_image_zst = self.fetch_asset(base_url + "rootfs.ext4.zst",
asset_hash = isum,
algorithm = "sha256")
cmd = f"{self.zstd} -d {disk_image_zst} -o {self.workdir}/rootfs.ext4"
process.run(cmd)
if dt:
dsum = csums.get(dt, None)
dtb = self.fetch_asset(base_url + dt,
asset_hash = dsum,
algorithm = "sha256")
else:
dtb = None
return (kernel_image, self.workdir + "/rootfs.ext4", dtb)
def prepare_run(self, kernel, disk, drive, dtb=None, console_index=0):
"""
Setup to run and add the common parameters to the system
"""
self.vm.set_console(console_index=console_index)
# all block devices are raw ext4's
blockdev = "driver=raw,file.driver=file," \
+ f"file.filename={disk},node-name=hd0"
kcmd_line = self.KERNEL_COMMON_COMMAND_LINE
kcmd_line += f" root=/dev/{self.root}"
kcmd_line += f" console={self.console}"
self.vm.add_args('-kernel', kernel,
'-append', kcmd_line,
'-blockdev', blockdev)
# Sometimes we need extra devices attached
if self.extradev:
self.vm.add_args('-device', self.extradev)
self.vm.add_args('-device',
f"{drive},drive=hd0")
# Some machines need an explicit DTB
if dtb:
self.vm.add_args('-dtb', dtb)
def run_tuxtest_tests(self, haltmsg):
"""
Wait for the system to boot up, wait for the login prompt and
then do a few things on the console. Trigger a shutdown and
wait to exit cleanly.
"""
self.wait_for_console_pattern("Welcome to TuxTest")
time.sleep(0.2)
exec_command(self, 'root')
time.sleep(0.2)
exec_command(self, 'cat /proc/interrupts')
time.sleep(0.1)
exec_command(self, 'cat /proc/self/maps')
time.sleep(0.1)
exec_command(self, 'uname -a')
time.sleep(0.1)
exec_command_and_wait_for_pattern(self, 'halt', haltmsg)
# Wait for VM to shut down gracefully if it can
if self.shutdown == "nowait":
self.vm.shutdown()
else:
self.vm.wait()
def common_tuxrun(self,
csums=None,
dt=None,
drive="virtio-blk-device",
haltmsg="reboot: System halted",
console_index=0):
"""
Common path for LKFT tests. Unless we need to do something
special with the command line we can process most things using
the tag metadata.
"""
(kernel, disk, dtb) = self.fetch_tuxrun_assets(csums, dt)
self.prepare_run(kernel, disk, drive, dtb, console_index)
self.vm.launch()
self.run_tuxtest_tests(haltmsg)
#
# The tests themselves. The configuration is derived from how
# tuxrun invokes qemu (with minor tweaks like using -blockdev
# consistently). The tuxrun equivalent is something like:
#
# tuxrun --device qemu-{ARCH} \
# --kernel https://storage.tuxboot.com/{TUXBOOT}/{IMAGE}
#
def test_arm64(self):
"""
:avocado: tags=arch:aarch64
:avocado: tags=cpu:cortex-a57
:avocado: tags=machine:virt
:avocado: tags=tuxboot:arm64
:avocado: tags=console:ttyAMA0
:avocado: tags=shutdown:nowait
"""
sums = {"Image" :
"ce95a7101a5fecebe0fe630deee6bd97b32ba41bc8754090e9ad8961ea8674c7",
"rootfs.ext4.zst" :
"bbd5ed4b9c7d3f4ca19ba71a323a843c6b585e880115df3b7765769dbd9dd061"}
self.common_tuxrun(csums=sums)
def test_arm64be(self):
"""
:avocado: tags=arch:aarch64
:avocado: tags=cpu:cortex-a57
:avocado: tags=endian:big
:avocado: tags=machine:virt
:avocado: tags=tuxboot:arm64be
:avocado: tags=console:ttyAMA0
:avocado: tags=shutdown:nowait
"""
sums = { "Image" :
"e0df4425eb2cd9ea9a283e808037f805641c65d8fcecc8f6407d8f4f339561b4",
"rootfs.ext4.zst" :
"e6ffd8813c8a335bc15728f2835f90539c84be7f8f5f691a8b01451b47fb4bd7"}
self.common_tuxrun(csums=sums)
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