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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [XenPPC] [xenppc-unstable] [POWERPC] add PowerPC-specific loader to xend
# HG changeset patch
# User Hollis Blanchard <hollisb@xxxxxxxxxx>
# Node ID 279843441136b04e11d8c49249c009ef7823cc5e
# Parent f4e9ed4708a39ef9abe37cc9148867d4e4a53322
[POWERPC] add PowerPC-specific loader to xend
- create a flat device tree to pass to libxc
Signed-off-by: Hollis Blanchard <hollisb@xxxxxxxxxx>
---
tools/python/xen/xend/FlatDeviceTree.py | 286 ++++++++++++++++++++++++++++++++
tools/python/xen/xend/image.py | 35 +++
2 files changed, 320 insertions(+), 1 deletion(-)
diff -r f4e9ed4708a3 -r 279843441136 tools/python/xen/xend/image.py
--- a/tools/python/xen/xend/image.py Wed Aug 16 17:19:38 2006 -0500
+++ b/tools/python/xen/xend/image.py Wed Aug 16 17:19:38 2006 -0500
@@ -28,6 +28,7 @@ from xen.xend.server.netif import random
from xen.xend.server.netif import randomMAC
from xen.xend.xenstore.xswatch import xswatch
from xen.xend import arch
+from xen.xend import FlatDeviceTree
xc = xen.lowlevel.xc.xc()
@@ -182,6 +183,38 @@ class LinuxImageHandler(ImageHandler):
cmdline = self.cmdline,
ramdisk = self.ramdisk,
features = self.vm.getFeatures())
+
+class PPC_LinuxImageHandler(LinuxImageHandler):
+
+ ostype = "linux"
+
+ def configure(self, imageConfig, deviceConfig):
+ LinuxImageHandler.configure(self, imageConfig, deviceConfig)
+ self.imageConfig = imageConfig
+
+ def buildDomain(self):
+ store_evtchn = self.vm.getStorePort()
+ console_evtchn = self.vm.getConsolePort()
+
+ log.debug("dom = %d", self.vm.getDomid())
+ log.debug("image = %s", self.kernel)
+ log.debug("store_evtchn = %d", store_evtchn)
+ log.debug("console_evtchn = %d", console_evtchn)
+ log.debug("cmdline = %s", self.cmdline)
+ log.debug("ramdisk = %s", self.ramdisk)
+ log.debug("vcpus = %d", self.vm.getVCpuCount())
+ log.debug("features = %s", self.vm.getFeatures())
+
+ devtree = FlatDeviceTree.build(self)
+
+ return xc.linux_build(dom = self.vm.getDomid(),
+ image = self.kernel,
+ store_evtchn = store_evtchn,
+ console_evtchn = console_evtchn,
+ cmdline = self.cmdline,
+ ramdisk = self.ramdisk,
+ features = self.vm.getFeatures(),
+ arch_args = devtree.to_bin())
class HVMImageHandler(ImageHandler):
@@ -400,7 +433,7 @@ class X86_HVM_ImageHandler(HVMImageHandl
_handlers = {
"powerpc": {
- "linux": LinuxImageHandler,
+ "linux": PPC_LinuxImageHandler,
},
"ia64": {
"linux": LinuxImageHandler,
diff -r f4e9ed4708a3 -r 279843441136 tools/python/xen/xend/FlatDeviceTree.py
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/python/xen/xend/FlatDeviceTree.py Wed Aug 16 17:19:38 2006 -0500
@@ -0,0 +1,286 @@
+#!/usr/bin/env python
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of version 2.1 of the GNU Lesser General Public
+# License as published by the Free Software Foundation.
+#
+# This library 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+# Copyright (C) IBM Corp. 2006
+#
+# Authors: Hollis Blanchard <hollisb@xxxxxxxxxx>
+
+import os
+import sys
+import struct
+
+_OF_DT_HEADER = 0xd00dfeed
+_OF_DT_BEGIN_NODE = 0x1
+_OF_DT_END_NODE = 0x2
+_OF_DT_PROP = 0x3
+_OF_DT_END = 0x9
+
+def _bincat(seq, separator=''):
+ '''Concatenate the contents of seq into a bytestream.'''
+ strs = []
+ for item in seq:
+ if type(item) == type(0):
+ strs.append(struct.pack(">I", item))
+ else:
+ try:
+ strs.append(item.to_bin())
+ except AttributeError, e:
+ strs.append(item)
+ return separator.join(strs)
+
+def _alignup(val, alignment):
+ return (val + alignment - 1) & ~(alignment - 1)
+
+def _pad(buf, alignment):
+ '''Pad bytestream with NULLs to specified alignment.'''
+ padlen = _alignup(len(buf), alignment)
+ return buf + '\0' * (padlen - len(buf))
+ # not present in Python 2.3:
+ #return buf.ljust(_padlen, '\0')
+
+class _Property:
+ def __init__(self, node, name, value):
+ self.node = node
+ self.value = value
+ self.name = name
+ self.node.tree.stradd(name)
+ def to_bin(self):
+ offset = self.node.tree.stroffset(self.name)
+ return struct.pack('>III', _OF_DT_PROP, len(self.value), offset) \
+ + _pad(self.value, 4)
+
+class _Node:
+ def __init__(self, tree, name):
+ self.tree = tree
+ self.name = name
+ self.props = {}
+ self.children = {}
+ self.phandle = 0
+
+ def to_bin(self):
+ name = _pad(self.name + '\0', 4)
+ return struct.pack('>I', _OF_DT_BEGIN_NODE) + \
+ name + \
+ _bincat(self.props.values()) + \
+ _bincat(self.children.values()) + \
+ struct.pack('>I', _OF_DT_END_NODE)
+
+ def addprop(self, propname, *cells):
+ '''setprop with duplicate error-checking.'''
+ if propname in self.props:
+ raise AttributeError('%s/%s already exists' % (self.name,
propname))
+ self.setprop(propname, *cells)
+
+ def setprop(self, propname, *cells):
+ self.props[propname] = _Property(self, propname, _bincat(cells))
+
+ def addnode(self, nodename):
+ '''newnode with duplicate error-checking.'''
+ if nodename in self.children:
+ raise AttributeError('%s/%s already exists' % (self.name,
nodename))
+ return self.newnode(nodename)
+
+ def newnode(self, nodename):
+ node = _Node(self.tree, nodename)
+ self.children[nodename] = node
+ return node
+
+ def getprop(self, propname):
+ return self.props[propname]
+
+ def getchild(self, nodename):
+ return self.children[nodename]
+
+ def get_phandle(self):
+ if self.phandle:
+ return self.phandle
+ self.phandle = self.tree.alloc_phandle()
+ self.addprop('linux,phandle', self.phandle)
+ return self.phandle
+
+class _Header:
+ def __init__(self):
+ self.magic = 0
+ self.totalsize = 0
+ self.off_dt_struct = 0
+ self.off_dt_strings = 0
+ self.off_mem_rsvmap = 0
+ self.version = 0
+ self.last_comp_version = 0
+ self.boot_cpuid_phys = 0
+ self.size_dt_strings = 0
+ def to_bin(self):
+ return struct.pack('>9I',
+ self.magic,
+ self.totalsize,
+ self.off_dt_struct,
+ self.off_dt_strings,
+ self.off_mem_rsvmap,
+ self.version,
+ self.last_comp_version,
+ self.boot_cpuid_phys,
+ self.size_dt_strings)
+
+class _StringBlock:
+ def __init__(self):
+ self.table = []
+ def to_bin(self):
+ return _bincat(self.table, '\0') + '\0'
+ def add(self, str):
+ self.table.append(str)
+ def getoffset(self, str):
+ return self.to_bin().index(str + '\0')
+
+class Tree(_Node):
+ def __init__(self):
+ self.last_phandle = 0
+ self.strings = _StringBlock()
+ self.reserved = [(0, 0)]
+ _Node.__init__(self, self, '\0')
+
+ def alloc_phandle(self):
+ self.last_phandle += 1
+ return self.last_phandle
+
+ def stradd(self, str):
+ return self.strings.add(str)
+
+ def stroffset(self, str):
+ return self.strings.getoffset(str)
+
+ def reserve(self, start, len):
+ self.reserved.insert(0, (start, len))
+
+ def to_bin(self):
+ # layout:
+ # header
+ # reservation map
+ # string block
+ # data block
+
+ datablock = _Node.to_bin(self)
+
+ r = [ struct.pack('>QQ', rsrv[0], rsrv[1]) for rsrv in self.reserved ]
+ reserved = _bincat(r)
+
+ strblock = _pad(self.strings.to_bin(), 4)
+ strblocklen = len(strblock)
+
+ header = _Header()
+ header.magic = _OF_DT_HEADER
+ header.off_mem_rsvmap = _alignup(len(header.to_bin()), 8)
+ header.off_dt_strings = header.off_mem_rsvmap + len(reserved)
+ header.off_dt_struct = header.off_dt_strings + strblocklen
+ header.version = 0x10
+ header.last_comp_version = 0x10
+ header.boot_cpuid_phys = 0
+ header.size_dt_strings = strblocklen
+
+ payload = reserved + \
+ strblock + \
+ datablock + \
+ struct.pack('>I', _OF_DT_END)
+ header.totalsize = len(payload) + _alignup(len(header.to_bin()), 8)
+ return _pad(header.to_bin(), 8) + payload
+
+_host_devtree_root = '/proc/device-tree'
+def _getprop(propname):
+ '''Extract a property from the system's device tree.'''
+ f = file(os.path.join(_host_devtree_root, propname), 'r')
+ data = f.read()
+ f.close()
+ return data
+
+def build(imghandler):
+ '''Construct a device tree by combining the domain's configuration and
+ the host's device tree.'''
+ root = Tree()
+
+ # 4 pages: start_info, console, store, shared_info
+ root.reserve(0x3ffc000, 0x4000)
+
+ root.addprop('device_type', 'chrp-but-not-really\0')
+ root.addprop('#size-cells', 2)
+ root.addprop('#address-cells', 2)
+ root.addprop('model', 'Momentum,Maple-D\0')
+ root.addprop('compatible', 'Momentum,Maple\0')
+
+ xen = root.addnode('xen')
+ xen.addprop('start-info', 0, 0x3ffc000, 0, 0x1000)
+ xen.addprop('version', 'Xen-3.0-unstable\0')
+ xen.addprop('reg', 0, imghandler.vm.domid, 0, 0)
+ xen.addprop('domain-name', imghandler.vm.getName() + '\0')
+ xencons = xen.addnode('console')
+ xencons.addprop('interrupts', 1, 0)
+
+ # XXX split out RMA node
+ mem = root.addnode('memory@0')
+ totalmem = imghandler.vm.getMemoryTarget() * 1024
+ mem.addprop('reg', 0, 0, 0, totalmem)
+ mem.addprop('device_type', 'memory\0')
+
+ cpus = root.addnode('cpus')
+ cpus.addprop('smp-enabled')
+ cpus.addprop('#size-cells', 0)
+ cpus.addprop('#address-cells', 1)
+
+ # create a cpu node for each vcpu
+ cpu0 = None
+ for i in range(imghandler.vm.getVCpuCount()):
+ cpu = cpus.addnode('PowerPC,970@0')
+ pft_size = imghandler.vm.info.get('pft-size', 0x14)
+ cpu.addprop('ibm,pft-size', 0, pft_size)
+ cpu.addprop('reg', i)
+ cpu.addprop('cpu#', i)
+ cpu.addprop('device_type', 'cpu\0')
+ for prop in ('d-cache-size', 'd-cache-line-size', 'd-cache-sets',
+ 'i-cache-size', 'i-cache-line-size', 'i-cache-sets',
+ 'clock-frequency', 'timebase-frequency',
+ 'timebases-in-sync'):
+ val = _getprop(os.path.join('cpus/PowerPC,970@0', prop))
+ cpu.addprop(prop, val)
+ # XXX 64-bit, more
+
+ # L2 cache
+ l2 = cpu.addnode('l2-cache')
+ l2.addprop('name', 'l2-cache\0')
+ l2.addprop('device_type', 'cache\0')
+ for prop in ('d-cache-size', 'd-cache-sets',
+ 'i-cache-size', 'i-cache-sets',
+ 'cache-unified'):
+ fullprop = os.path.join('cpus/PowerPC,970@%d/l2-cache' % i, prop)
+ val = _getprop(fullprop)
+ l2.addprop(prop, val)
+
+ # set default CPU
+ if cpu0 == None:
+ cpu0 = cpu
+
+ chosen = root.addnode('chosen')
+ chosen.addprop('cpu', cpu0.get_phandle())
+ chosen.addprop('memory', mem.get_phandle())
+ chosen.addprop('linux,stdout-path', '/xen/console\0')
+ chosen.addprop('interrupt-controller', xen.get_phandle())
+ chosen.addprop('bootargs', imghandler.cmdline + '\0')
+ # xc_linux_load.c will overwrite these 64-bit properties later
+ chosen.addprop('linux,initrd-start', 0, 0)
+ chosen.addprop('linux,initrd-end', 0, 0)
+
+ if 1:
+ f = file('/tmp/domU.dtb', 'w')
+ f.write(root.to_bin())
+ f.close()
+
+ return root
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