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beb6b57b3b
move python/qemu/*.py to python/qemu/[machine, qmp, utils]/*.py and
update import directives across the tree.
This is done to create a PEP420 namespace package, in which we may
create subpackages. To do this, the namespace directory ("qemu") should
not have any modules in it. Those files will go into new 'machine',
'qmp' and 'utils' subpackages instead.
Implement machine/__init__.py making the top-level classes and functions
from its various modules available directly inside the package. Change
qmp.py to qmp/__init__.py similarly, such that all of the useful QMP
library classes are available directly from "qemu.qmp" instead of
"qemu.qmp.qmp".
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Message-id: 20210527211715.394144-10-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
107 lines
4.1 KiB
Python
107 lines
4.1 KiB
Python
#!/usr/bin/env python3
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#
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# VM testing aarch64 library
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#
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# Copyright 2020 Linaro
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#
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# Authors:
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# Robert Foley <robert.foley@linaro.org>
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#
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# This code is licensed under the GPL version 2 or later. See
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# the COPYING file in the top-level directory.
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#
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import os
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import sys
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import subprocess
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import basevm
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from qemu.utils import kvm_available
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# This is the config needed for current version of QEMU.
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# This works for both kvm and tcg.
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CURRENT_CONFIG = {
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'cpu' : "max",
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'machine' : "virt,gic-version=max",
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}
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# The minimum minor version of QEMU we will support with aarch64 VMs is 3.
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# QEMU versions less than 3 have various issues running these VMs.
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QEMU_AARCH64_MIN_VERSION = 3
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# The DEFAULT_CONFIG will default to a version of
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# parameters that works for backwards compatibility.
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DEFAULT_CONFIG = {'kvm' : {'cpu' : "host",
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'machine' : "virt,gic-version=host"},
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'tcg' : {'cpu' : "cortex-a57",
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'machine' : "virt"},
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}
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def get_config_defaults(vmcls, default_config):
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"""Fetch the configuration defaults for this VM,
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taking into consideration the defaults for
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aarch64 first, followed by the defaults for this VM."""
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config = default_config
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config.update(aarch_get_config_defaults(vmcls))
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return config
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def aarch_get_config_defaults(vmcls):
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"""Set the defaults for current version of QEMU."""
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config = CURRENT_CONFIG
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args = basevm.parse_args(vmcls)
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qemu_path = basevm.get_qemu_path(vmcls.arch, args.build_path)
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qemu_version = basevm.get_qemu_version(qemu_path)
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if qemu_version < QEMU_AARCH64_MIN_VERSION:
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error = "\nThis major version of QEMU {} is to old for aarch64 VMs.\n"\
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"The major version must be at least {}.\n"\
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"To continue with the current build of QEMU, "\
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"please restart with QEMU_LOCAL=1 .\n"
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print(error.format(qemu_version, QEMU_AARCH64_MIN_VERSION))
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exit(1)
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if qemu_version == QEMU_AARCH64_MIN_VERSION:
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# We have an older version of QEMU,
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# set the config values for backwards compatibility.
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if kvm_available('aarch64'):
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config.update(DEFAULT_CONFIG['kvm'])
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else:
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config.update(DEFAULT_CONFIG['tcg'])
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return config
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def create_flash_images(flash_dir="./", efi_img=""):
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"""Creates the appropriate pflash files
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for an aarch64 VM."""
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flash0_path = get_flash_path(flash_dir, "flash0")
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flash1_path = get_flash_path(flash_dir, "flash1")
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fd_null = open(os.devnull, 'w')
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subprocess.check_call(["dd", "if=/dev/zero", "of={}".format(flash0_path),
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"bs=1M", "count=64"],
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stdout=fd_null, stderr=subprocess.STDOUT)
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# A reliable way to get the QEMU EFI image is via an installed package or
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# via the bios included with qemu.
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if not os.path.exists(efi_img):
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sys.stderr.write("*** efi argument is invalid ({})\n".format(efi_img))
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sys.stderr.write("*** please check --efi-aarch64 argument or "\
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"install qemu-efi-aarch64 package\n")
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exit(3)
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subprocess.check_call(["dd", "if={}".format(efi_img),
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"of={}".format(flash0_path),
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"conv=notrunc"],
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stdout=fd_null, stderr=subprocess.STDOUT)
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subprocess.check_call(["dd", "if=/dev/zero",
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"of={}".format(flash1_path),
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"bs=1M", "count=64"],
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stdout=fd_null, stderr=subprocess.STDOUT)
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fd_null.close()
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def get_pflash_args(flash_dir="./"):
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"""Returns a string that can be used to
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boot qemu using the appropriate pflash files
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for aarch64."""
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flash0_path = get_flash_path(flash_dir, "flash0")
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flash1_path = get_flash_path(flash_dir, "flash1")
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pflash_args_str = "-drive file={},format=raw,if=pflash "\
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"-drive file={},format=raw,if=pflash"
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pflash_args = pflash_args_str.format(flash0_path, flash1_path)
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return pflash_args.split(" ")
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def get_flash_path(flash_dir, name):
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return os.path.join(flash_dir, "{}.img".format(name))
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