345c29a4b7
By default, Qemu emulates a system with 128 MB of RAM. This is not sufficient for some test cases we have, such as TestPerlDBDmysql, where the initramfs is quite large. Therefore, this commit extends the RAM size emulated by Qemu to 256 MB. Fixes: https://gitlab.com/buildroot.org/buildroot/-/jobs/237108668 Thanks to Arnout for the analysis of the issue. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Acked-by: Francois Perrad <francois.perrad@gadz.org> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
121 lines
4.5 KiB
Python
121 lines
4.5 KiB
Python
import pexpect
|
|
|
|
import infra
|
|
|
|
|
|
class Emulator(object):
|
|
|
|
def __init__(self, builddir, downloaddir, logtofile, timeout_multiplier):
|
|
self.qemu = None
|
|
self.downloaddir = downloaddir
|
|
self.logfile = infra.open_log_file(builddir, "run", logtofile)
|
|
# We use elastic runners on the cloud to runs our tests. Those runners
|
|
# can take a long time to run the emulator. Use a timeout multiplier
|
|
# when running the tests to avoid sporadic failures.
|
|
self.timeout_multiplier = timeout_multiplier
|
|
|
|
# Start Qemu to boot the system
|
|
#
|
|
# arch: Qemu architecture to use
|
|
#
|
|
# kernel: path to the kernel image, or the special string
|
|
# 'builtin'. 'builtin' means a pre-built kernel image will be
|
|
# downloaded from ARTEFACTS_URL and suitable options are
|
|
# automatically passed to qemu and added to the kernel cmdline. So
|
|
# far only armv5, armv7 and i386 builtin kernels are available.
|
|
# If None, then no kernel is used, and we assume a bootable device
|
|
# will be specified.
|
|
#
|
|
# kernel_cmdline: array of kernel arguments to pass to Qemu -append option
|
|
#
|
|
# options: array of command line options to pass to Qemu
|
|
#
|
|
def boot(self, arch, kernel=None, kernel_cmdline=None, options=None):
|
|
if arch in ["armv7", "armv5"]:
|
|
qemu_arch = "arm"
|
|
else:
|
|
qemu_arch = arch
|
|
|
|
qemu_cmd = ["qemu-system-{}".format(qemu_arch),
|
|
"-serial", "stdio",
|
|
"-display", "none",
|
|
"-m", "256"]
|
|
|
|
if options:
|
|
qemu_cmd += options
|
|
|
|
if kernel_cmdline is None:
|
|
kernel_cmdline = []
|
|
|
|
if kernel:
|
|
if kernel == "builtin":
|
|
if arch in ["armv7", "armv5"]:
|
|
kernel_cmdline.append("console=ttyAMA0")
|
|
|
|
if arch == "armv7":
|
|
kernel = infra.download(self.downloaddir,
|
|
"kernel-vexpress")
|
|
dtb = infra.download(self.downloaddir,
|
|
"vexpress-v2p-ca9.dtb")
|
|
qemu_cmd += ["-dtb", dtb]
|
|
qemu_cmd += ["-M", "vexpress-a9"]
|
|
elif arch == "armv5":
|
|
kernel = infra.download(self.downloaddir,
|
|
"kernel-versatile")
|
|
qemu_cmd += ["-M", "versatilepb"]
|
|
|
|
qemu_cmd += ["-kernel", kernel]
|
|
|
|
if kernel_cmdline:
|
|
qemu_cmd += ["-append", " ".join(kernel_cmdline)]
|
|
|
|
self.logfile.write("> starting qemu with '%s'\n" % " ".join(qemu_cmd))
|
|
self.qemu = pexpect.spawn(qemu_cmd[0], qemu_cmd[1:],
|
|
timeout=5 * self.timeout_multiplier,
|
|
env={"QEMU_AUDIO_DRV": "none"})
|
|
# We want only stdout into the log to avoid double echo
|
|
self.qemu.logfile_read = self.logfile
|
|
|
|
# Wait for the login prompt to appear, and then login as root with
|
|
# the provided password, or no password if not specified.
|
|
def login(self, password=None):
|
|
# The login prompt can take some time to appear when running multiple
|
|
# instances in parallel, so set the timeout to a large value
|
|
index = self.qemu.expect(["buildroot login:", pexpect.TIMEOUT],
|
|
timeout=60 * self.timeout_multiplier)
|
|
if index != 0:
|
|
self.logfile.write("==> System does not boot")
|
|
raise SystemError("System does not boot")
|
|
|
|
self.qemu.sendline("root")
|
|
if password:
|
|
self.qemu.expect("Password:")
|
|
self.qemu.sendline(password)
|
|
index = self.qemu.expect(["# ", pexpect.TIMEOUT])
|
|
if index != 0:
|
|
raise SystemError("Cannot login")
|
|
self.run("dmesg -n 1")
|
|
|
|
# Run the given 'cmd' with a 'timeout' on the target
|
|
# return a tuple (output, exit_code)
|
|
def run(self, cmd, timeout=-1):
|
|
self.qemu.sendline(cmd)
|
|
if timeout != -1:
|
|
timeout *= self.timeout_multiplier
|
|
self.qemu.expect("# ", timeout=timeout)
|
|
# Remove double carriage return from qemu stdout so str.splitlines()
|
|
# works as expected.
|
|
output = self.qemu.before.replace("\r\r", "\r").splitlines()[1:]
|
|
|
|
self.qemu.sendline("echo $?")
|
|
self.qemu.expect("# ")
|
|
exit_code = self.qemu.before.splitlines()[2]
|
|
exit_code = int(exit_code)
|
|
|
|
return output, exit_code
|
|
|
|
def stop(self):
|
|
if self.qemu is None:
|
|
return
|
|
self.qemu.terminate(force=True)
|