mirror of
https://github.com/xen-project/xen.git
synced 2026-10-29 02:30:03 +01:00
Keir Fraser
41859f6925
From: Andreas Florath <xen@flonatel.org> Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
127 lines
4.1 KiB
Python
127 lines
4.1 KiB
Python
#!/usr/bin/python
|
|
"""
|
|
arch.py - Encapsulate all logic regarding what type of hardware xen
|
|
is running on to make adding new platforms easier.
|
|
|
|
Copyright (C) 2006 Tony Breeds IBM Corporation
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; under version 2 of the License.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
"""
|
|
|
|
import os
|
|
import re
|
|
import config
|
|
import commands
|
|
|
|
from Test import *
|
|
|
|
BLOCK_ROOT_DEV = "hda"
|
|
|
|
# This isn't truly platform related but it makes the code tidier
|
|
def getRdPath():
|
|
"""Locate the full path to ramdisks needed by domUs"""
|
|
rdpath = os.environ.get("RD_PATH")
|
|
if not rdpath:
|
|
rdpath = "../../ramdisk"
|
|
rdpath = os.path.abspath(rdpath)
|
|
|
|
return rdpath
|
|
|
|
# Begin: Intel ia32 and ia64 as well as AMD 32-bit and 64-bit processors
|
|
def ia_checkBuffer(buffer):
|
|
return
|
|
|
|
def ia_minSafeMem():
|
|
return 32
|
|
|
|
def ia64_minSafeMem():
|
|
return 128
|
|
|
|
def ia_getDeviceModel():
|
|
"""Get the path to the device model based on
|
|
the architecture reported in uname"""
|
|
architecture = os.uname()[4]
|
|
if re.search("64", architecture):
|
|
return "/usr/lib64/xen/bin/qemu-dm"
|
|
else:
|
|
return "/usr/lib/xen/bin/qemu-dm"
|
|
|
|
def ia_getDefaultKernel():
|
|
"""Get the path to the default DomU kernel"""
|
|
dom0Ver = commands.getoutput("uname -r");
|
|
domUVer = dom0Ver.replace("xen0", "xenU");
|
|
|
|
return "/boot/vmlinuz-" + domUVer;
|
|
|
|
ia_ParavirtDefaults = {"memory" : 64,
|
|
"vcpus" : 1,
|
|
"kernel" : ia_getDefaultKernel(),
|
|
"root" : "/dev/ram0",
|
|
"ramdisk" : getRdPath() + "/initrd.img",
|
|
}
|
|
ia_HVMDefaults = {"memory" : 64,
|
|
"vcpus" : 1,
|
|
"acpi" : 0,
|
|
"disk" : ["file:%s/disk.img,ioemu:%s,w!" %
|
|
(getRdPath(), BLOCK_ROOT_DEV)],
|
|
"kernel" : "hvmloader",
|
|
"builder" : "hvm",
|
|
"sdl" : 0,
|
|
"vnc" : 0,
|
|
"vncviewer" : 0,
|
|
"nographic" : 1,
|
|
"serial" : "pty",
|
|
"device_model" : ia_getDeviceModel(),
|
|
}
|
|
# End : Intel ia32 and ia64 as well as AMD 32-bit and 64-bit processors
|
|
|
|
"""Convert from uname specification to a more general platform."""
|
|
_uname_to_arch_map = {
|
|
"i386" : "x86",
|
|
"i486" : "x86",
|
|
"i586" : "x86",
|
|
"i686" : "x86",
|
|
"x86_64": "x86_64",
|
|
"ia64" : "ia64",
|
|
}
|
|
|
|
# Lookup current platform.
|
|
_arch = _uname_to_arch_map.get(os.uname()[4], "Unknown")
|
|
if _arch == "x86" or _arch == "x86_64" or _arch == "ia64":
|
|
minSafeMem = ia_minSafeMem
|
|
getDefaultKernel = ia_getDefaultKernel
|
|
checkBuffer = ia_checkBuffer
|
|
if config.ENABLE_HVM_SUPPORT:
|
|
configDefaults = ia_HVMDefaults
|
|
else:
|
|
configDefaults = ia_ParavirtDefaults
|
|
|
|
# note: xm-test generates an uncompressed image, and this code
|
|
# expects one. This will fail with a gzip-ed image.
|
|
if configDefaults['ramdisk']:
|
|
rd_size = os.stat(configDefaults['ramdisk']).st_size
|
|
clause = 'ramdisk_size=' + str((rd_size / 1024)+1)
|
|
if configDefaults.has_key('extra'):
|
|
configDefaults['extra'] = configDefaults['extra'] + " " + clause
|
|
else:
|
|
configDefaults['extra'] = clause
|
|
|
|
if _arch == "ia64":
|
|
minSafeMem = ia64_minSafeMem
|
|
configDefaults['memory'] = ia64_minSafeMem()
|
|
|
|
else:
|
|
raise ValueError, "Unknown architecture!"
|