Merge with the main repo.

--HG--
rename : src/mem/vport.hh => src/mem/fs_translating_port_proxy.hh
rename : src/mem/translating_port.cc => src/mem/se_translating_port_proxy.cc
rename : src/mem/translating_port.hh => src/mem/se_translating_port_proxy.hh

13 files changed, 386 insertions, 49 deletions

diff --git a/configs/common/CacheConfig.py b/configs/common/CacheConfig.py
index 00517dfc4..364b20f28 100644
--- a/configs/common/CacheConfig.py
+++ b/configs/common/CacheConfig.py
@@ -32,11 +32,17 @@
 import m5
 from m5.objects import *
 from Caches import *
+from O3_ARM_v7a import *
 
 def config_cache(options, system):
     if options.l2cache:
-        system.l2 = L2Cache(size = options.l2_size, assoc = options.l2_assoc,
-                            block_size=options.cacheline_size)
+        if options.cpu_type == "arm_detailed":
+            system.l2 = O3_ARM_v7aL2(size = options.l2_size, assoc = options.l2_assoc,
+                                block_size=options.cacheline_size)
+        else:
+            system.l2 = L2Cache(size = options.l2_size, assoc = options.l2_assoc,
+                                block_size=options.cacheline_size)
+
         system.tol2bus = Bus()
         system.l2.cpu_side = system.tol2bus.port
         system.l2.mem_side = system.membus.port
@@ -44,10 +50,21 @@ def config_cache(options, system):
 
     for i in xrange(options.num_cpus):
         if options.caches:
-            icache = L1Cache(size = options.l1i_size, assoc = options.l1i_assoc,
-                             block_size=options.cacheline_size)
-            dcache = L1Cache(size = options.l1d_size, assoc = options.l1d_assoc,
-                             block_size=options.cacheline_size)
+            if options.cpu_type == "arm_detailed":
+                icache = O3_ARM_v7a_ICache(size = options.l1i_size,
+                                     assoc = options.l1i_assoc,
+                                     block_size=options.cacheline_size)
+                dcache = O3_ARM_v7a_DCache(size = options.l1d_size,
+                                     assoc = options.l1d_assoc,
+                                     block_size=options.cacheline_size)
+            else:
+                icache = L1Cache(size = options.l1i_size,
+                                 assoc = options.l1i_assoc,
+                                 block_size=options.cacheline_size)
+                dcache = L1Cache(size = options.l1d_size,
+                                 assoc = options.l1d_assoc,
+                                 block_size=options.cacheline_size)
+
             if buildEnv['TARGET_ISA'] == 'x86':
                 system.cpu[i].addPrivateSplitL1Caches(icache, dcache,
                                                       PageTableWalkerCache(),
diff --git a/configs/common/FSConfig.py b/configs/common/FSConfig.py
index f54d63852..6154f9877 100644
--- a/configs/common/FSConfig.py
+++ b/configs/common/FSConfig.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2010 ARM Limited
+# Copyright (c) 2010-2012 ARM Limited
 # All rights reserved.
 #
 # The license below extends only to copyright in the software and shall
@@ -56,6 +56,7 @@ class MemBus(Bus):
 
 
 def makeLinuxAlphaSystem(mem_mode, mdesc = None):
+    IO_address_space_base = 0x80000000000
     class BaseTsunami(Tsunami):
         ethernet = NSGigE(pci_bus=0, pci_dev=1, pci_func=0)
         ide = IdeController(disks=[Parent.disk0, Parent.disk2],
@@ -68,10 +69,13 @@ def makeLinuxAlphaSystem(mem_mode, mdesc = None):
     self.readfile = mdesc.script()
     self.iobus = Bus(bus_id=0)
     self.membus = MemBus(bus_id=1)
-    self.bridge = Bridge(delay='50ns', nack_delay='4ns')
+    # By default the bridge responds to all addresses above the I/O
+    # base address (including the PCI config space)
+    self.bridge = Bridge(delay='50ns', nack_delay='4ns',
+                         ranges = [AddrRange(IO_address_space_base, Addr.max)])
     self.physmem = PhysicalMemory(range = AddrRange(mdesc.mem()))
-    self.bridge.side_a = self.iobus.port
-    self.bridge.side_b = self.membus.port
+    self.bridge.master = self.iobus.port
+    self.bridge.slave = self.membus.port
     self.physmem.port = self.membus.port
     self.disk0 = CowIdeDisk(driveID='master')
     self.disk2 = CowIdeDisk(driveID='master')
@@ -80,7 +84,11 @@ def makeLinuxAlphaSystem(mem_mode, mdesc = None):
     self.tsunami = BaseTsunami()
     self.tsunami.attachIO(self.iobus)
     self.tsunami.ide.pio = self.iobus.port
+    self.tsunami.ide.config = self.iobus.port
+    self.tsunami.ide.dma = self.iobus.port
     self.tsunami.ethernet.pio = self.iobus.port
+    self.tsunami.ethernet.config = self.iobus.port
+    self.tsunami.ethernet.dma = self.iobus.port
     self.simple_disk = SimpleDisk(disk=RawDiskImage(image_file = mdesc.disk(),
                                                read_only = True))
     self.intrctrl = IntrControl()
@@ -91,6 +99,8 @@ def makeLinuxAlphaSystem(mem_mode, mdesc = None):
     self.console = binary('console')
     self.boot_osflags = 'root=/dev/hda1 console=ttyS0'
 
+    self.system_port = self.membus.port
+
     return self
 
 def makeLinuxAlphaRubySystem(mem_mode, mdesc = None):
@@ -123,7 +133,11 @@ def makeLinuxAlphaRubySystem(mem_mode, mdesc = None):
     self.tsunami = BaseTsunami()
     self.tsunami.attachIO(self.piobus)
     self.tsunami.ide.pio = self.piobus.port
+    self.tsunami.ide.config = self.piobus.port
+    self.tsunami.ide.dma = self.piobus.port
     self.tsunami.ethernet.pio = self.piobus.port
+    self.tsunami.ethernet.config = self.piobus.port
+    self.tsunami.ethernet.dma = self.piobus.port
 
     #
     # Store the dma devices for later connection to dma ruby ports.
@@ -144,6 +158,10 @@ def makeLinuxAlphaRubySystem(mem_mode, mdesc = None):
     return self
 
 def makeSparcSystem(mem_mode, mdesc = None):
+    # Constants from iob.cc and uart8250.cc
+    iob_man_addr = 0x9800000000
+    uart_pio_size = 8
+
     class CowMmDisk(MmDisk):
         image = CowDiskImage(child=RawDiskImage(read_only=True),
                              read_only=False)
@@ -164,8 +182,8 @@ def makeSparcSystem(mem_mode, mdesc = None):
     self.t1000.attachIO(self.iobus)
     self.physmem = PhysicalMemory(range = AddrRange(Addr('1MB'), size = '64MB'), zero = True)
     self.physmem2 = PhysicalMemory(range = AddrRange(Addr('2GB'), size ='256MB'), zero = True)
-    self.bridge.side_a = self.iobus.port
-    self.bridge.side_b = self.membus.port
+    self.bridge.master = self.iobus.port
+    self.bridge.slave = self.membus.port
     self.physmem.port = self.membus.port
     self.physmem2.port = self.membus.port
     self.rom.port = self.membus.port
@@ -176,6 +194,25 @@ def makeSparcSystem(mem_mode, mdesc = None):
     self.disk0 = CowMmDisk()
     self.disk0.childImage(disk('disk.s10hw2'))
     self.disk0.pio = self.iobus.port
+
+    # The puart0 and hvuart are placed on the IO bus, so create ranges
+    # for them. The remaining IO range is rather fragmented, so poke
+    # holes for the iob and partition descriptors etc.
+    self.bridge.ranges = \
+        [
+        AddrRange(self.t1000.puart0.pio_addr,
+                  self.t1000.puart0.pio_addr + uart_pio_size - 1),
+        AddrRange(self.disk0.pio_addr,
+                  self.t1000.fake_jbi.pio_addr +
+                  self.t1000.fake_jbi.pio_size - 1),
+        AddrRange(self.t1000.fake_clk.pio_addr,
+                  iob_man_addr - 1),
+        AddrRange(self.t1000.fake_l2_1.pio_addr,
+                  self.t1000.fake_ssi.pio_addr +
+                  self.t1000.fake_ssi.pio_size - 1),
+        AddrRange(self.t1000.hvuart.pio_addr,
+                  self.t1000.hvuart.pio_addr + uart_pio_size - 1)
+        ]
     self.reset_bin = binary('reset_new.bin')
     self.hypervisor_bin = binary('q_new.bin')
     self.openboot_bin = binary('openboot_new.bin')
@@ -183,6 +220,8 @@ def makeSparcSystem(mem_mode, mdesc = None):
     self.hypervisor_desc_bin = binary('1up-hv.bin')
     self.partition_desc_bin = binary('1up-md.bin')
 
+    self.system_port = self.membus.port
+
     return self
 
 def makeArmSystem(mem_mode, machine_type, mdesc = None, bare_metal=False):
@@ -202,8 +241,8 @@ def makeArmSystem(mem_mode, machine_type, mdesc = None, bare_metal=False):
     self.membus = MemBus(bus_id=1)
     self.membus.badaddr_responder.warn_access = "warn"
     self.bridge = Bridge(delay='50ns', nack_delay='4ns')
-    self.bridge.side_a = self.iobus.port
-    self.bridge.side_b = self.membus.port
+    self.bridge.master = self.iobus.port
+    self.bridge.slave = self.membus.port
 
     self.mem_mode = mem_mode
 
@@ -257,12 +296,14 @@ def makeArmSystem(mem_mode, machine_type, mdesc = None, bare_metal=False):
         self.boot_osflags = boot_flags
 
     self.physmem.port = self.membus.port
-    self.realview.attachOnChipIO(self.membus)
+    self.realview.attachOnChipIO(self.membus, self.bridge)
     self.realview.attachIO(self.iobus)
     self.intrctrl = IntrControl()
     self.terminal = Terminal()
     self.vncserver = VncServer()
 
+    self.system_port = self.membus.port
+
     return self
 
 
@@ -281,8 +322,8 @@ def makeLinuxMipsSystem(mem_mode, mdesc = None):
     self.membus = MemBus(bus_id=1)
     self.bridge = Bridge(delay='50ns', nack_delay='4ns')
     self.physmem = PhysicalMemory(range = AddrRange('1GB'))
-    self.bridge.side_a = self.iobus.port
-    self.bridge.side_b = self.membus.port
+    self.bridge.master = self.iobus.port
+    self.bridge.slave = self.membus.port
     self.physmem.port = self.membus.port
     self.disk0 = CowIdeDisk(driveID='master')
     self.disk2 = CowIdeDisk(driveID='master')
@@ -291,7 +332,11 @@ def makeLinuxMipsSystem(mem_mode, mdesc = None):
     self.malta = BaseMalta()
     self.malta.attachIO(self.iobus)
     self.malta.ide.pio = self.iobus.port
+    self.malta.ide.config = self.iobus.port
+    self.malta.ide.dma = self.iobus.port
     self.malta.ethernet.pio = self.iobus.port
+    self.malta.ethernet.config = self.iobus.port
+    self.malta.ethernet.dma = self.iobus.port
     self.simple_disk = SimpleDisk(disk=RawDiskImage(image_file = mdesc.disk(),
                                                read_only = True))
     self.intrctrl = IntrControl()
@@ -301,6 +346,8 @@ def makeLinuxMipsSystem(mem_mode, mdesc = None):
     self.console = binary('mips/console')
     self.boot_osflags = 'root=/dev/hda1 console=ttyS0'
 
+    self.system_port = self.membus.port
+
     return self
 
 def x86IOAddress(port):
@@ -308,18 +355,48 @@ def x86IOAddress(port):
     return IO_address_space_base + port
 
 def connectX86ClassicSystem(x86_sys):
+    # Constants similar to x86_traits.hh
+    IO_address_space_base = 0x8000000000000000
+    pci_config_address_space_base = 0xc000000000000000
+    interrupts_address_space_base = 0xa000000000000000
+    APIC_range_size = 1 << 12;
+
     x86_sys.membus = MemBus(bus_id=1)
     x86_sys.physmem.port = x86_sys.membus.port
 
     # North Bridge
     x86_sys.iobus = Bus(bus_id=0)
     x86_sys.bridge = Bridge(delay='50ns', nack_delay='4ns')
-    x86_sys.bridge.side_a = x86_sys.iobus.port
-    x86_sys.bridge.side_b = x86_sys.membus.port
+    x86_sys.bridge.master = x86_sys.iobus.port
+    x86_sys.bridge.slave = x86_sys.membus.port
+    # Allow the bridge to pass through the IO APIC (two pages),
+    # everything in the IO address range up to the local APIC, and
+    # then the entire PCI address space and beyond
+    x86_sys.bridge.ranges = \
+        [
+        AddrRange(x86_sys.pc.south_bridge.io_apic.pio_addr,
+                  x86_sys.pc.south_bridge.io_apic.pio_addr +
+                  APIC_range_size - 1),
+        AddrRange(IO_address_space_base,
+                  interrupts_address_space_base - 1),
+        AddrRange(pci_config_address_space_base,
+                  Addr.max)
+        ]
+
+    # Create a bridge from the IO bus to the memory bus to allow access to
+    # the local APIC (two pages)
+    x86_sys.iobridge = Bridge(delay='50ns', nack_delay='4ns')
+    x86_sys.iobridge.slave = x86_sys.iobus.port
+    x86_sys.iobridge.master = x86_sys.membus.port
+    x86_sys.iobridge.ranges = [AddrRange(interrupts_address_space_base,
+                                         interrupts_address_space_base +
+                                         APIC_range_size - 1)]
 
     # connect the io bus
     x86_sys.pc.attachIO(x86_sys.iobus)
 
+    x86_sys.system_port = x86_sys.membus.port
+
 def connectX86RubySystem(x86_sys):
     # North Bridge
     x86_sys.piobus = Bus(bus_id=0)
diff --git a/configs/common/O3_ARM_v7a.py b/configs/common/O3_ARM_v7a.py
new file mode 100644
index 000000000..a2b769f27
--- /dev/null
+++ b/configs/common/O3_ARM_v7a.py
@@ -0,0 +1,199 @@
+# Copyright (c) 2012 The Regents of The University of Michigan
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Authors: Ron Dreslinski
+
+
+from m5.objects import *
+
+# Simple ALU Instructions have a latency of 1
+class O3_ARM_v7a_Simple_Int(FUDesc):
+    opList = [ OpDesc(opClass='IntAlu', opLat=1) ]
+    count = 2
+
+# Complex ALU instructions have a variable latencies
+class O3_ARM_v7a_Complex_Int(FUDesc):
+    opList = [ OpDesc(opClass='IntMult', opLat=3, issueLat=1),
+               OpDesc(opClass='IntDiv', opLat=12, issueLat=12),
+               OpDesc(opClass='IprAccess', opLat=3, issueLat=1) ]
+    count = 1
+
+
+# Floating point and SIMD instructions 
+class O3_ARM_v7a_FP(FUDesc):
+    opList = [ OpDesc(opClass='SimdAdd', opLat=4),
+               OpDesc(opClass='SimdAddAcc', opLat=4),
+               OpDesc(opClass='SimdAlu', opLat=4),
+               OpDesc(opClass='SimdCmp', opLat=4),
+               OpDesc(opClass='SimdCvt', opLat=3),
+               OpDesc(opClass='SimdMisc', opLat=3),
+               OpDesc(opClass='SimdMult',opLat=5),
+               OpDesc(opClass='SimdMultAcc',opLat=5),
+               OpDesc(opClass='SimdShift',opLat=3),
+               OpDesc(opClass='SimdShiftAcc', opLat=3),
+               OpDesc(opClass='SimdSqrt', opLat=9),
+               OpDesc(opClass='SimdFloatAdd',opLat=5),
+               OpDesc(opClass='SimdFloatAlu',opLat=5),
+               OpDesc(opClass='SimdFloatCmp', opLat=3),
+               OpDesc(opClass='SimdFloatCvt', opLat=3),
+               OpDesc(opClass='SimdFloatDiv', opLat=3),
+               OpDesc(opClass='SimdFloatMisc', opLat=3),
+               OpDesc(opClass='SimdFloatMult', opLat=3),
+               OpDesc(opClass='SimdFloatMultAcc',opLat=1),
+               OpDesc(opClass='SimdFloatSqrt', opLat=9),
+               OpDesc(opClass='FloatAdd', opLat=5),
+               OpDesc(opClass='FloatCmp', opLat=5),
+               OpDesc(opClass='FloatCvt', opLat=5),
+               OpDesc(opClass='FloatDiv', opLat=9, issueLat=9),
+               OpDesc(opClass='FloatSqrt', opLat=33, issueLat=33),
+               OpDesc(opClass='FloatMult', opLat=4) ]
+    count = 2
+
+
+# Load/Store Units
+class O3_ARM_v7a_Load(FUDesc):
+    opList = [ OpDesc(opClass='MemRead',opLat=2) ]
+    count = 1
+
+class O3_ARM_v7a_Store(FUDesc):
+    opList = [OpDesc(opClass='MemWrite',opLat=2) ]
+    count = 1
+
+# Functional Units for this CPU
+class O3_ARM_v7a_FUP(FUPool):
+    FUList = [O3_ARM_v7a_Simple_Int(), O3_ARM_v7a_Complex_Int(),
+              O3_ARM_v7a_Load(), O3_ARM_v7a_Store(), O3_ARM_v7a_FP()]
+
+
+class O3_ARM_v7a_3(DerivO3CPU):
+    predType = "tournament"
+    localPredictorSize = 64
+    localCtrBits = 2
+    localHistoryTableSize = 64
+    localHistoryBits = 6
+    globalPredictorSize = 8192
+    globalCtrBits = 2
+    globalHistoryBits = 13
+    choicePredictorSize = 8192
+    choiceCtrBits = 2
+    BTBEntries = 2048
+    BTBTagSize = 18
+    RASSize = 16
+    instShiftAmt = 2
+    LQEntries = 16
+    SQEntries = 16
+    LSQDepCheckShift = 0
+    LFSTSize = 1024
+    SSITSize = 1024
+    decodeToFetchDelay = 1
+    renameToFetchDelay = 1
+    iewToFetchDelay = 1
+    commitToFetchDelay = 1
+    renameToDecodeDelay = 1
+    iewToDecodeDelay = 1
+    commitToDecodeDelay = 1
+    iewToRenameDelay = 1
+    commitToRenameDelay = 1
+    commitToIEWDelay = 1
+    fetchWidth = 3
+    fetchToDecodeDelay = 3
+    decodeWidth = 3
+    decodeToRenameDelay = 2
+    renameWidth = 3
+    renameToIEWDelay = 1
+    issueToExecuteDelay = 1
+    dispatchWidth = 6
+    issueWidth = 8
+    wbWidth = 8
+    wbDepth = 1
+    fuPool = O3_ARM_v7a_FUP()
+    iewToCommitDelay = 1
+    renameToROBDelay = 1
+    commitWidth = 8
+    squashWidth = 8
+    trapLatency = 13
+    backComSize = 5
+    forwardComSize = 5
+    numPhysIntRegs = 128
+    numPhysFloatRegs = 128
+    numIQEntries = 32
+    numROBEntries = 40
+
+    defer_registration= False
+
+# Instruction Cache
+# All latencys assume a 1GHz clock rate, with a faster clock they would be faster
+class O3_ARM_v7a_ICache(BaseCache):
+    latency = '1ns'
+    block_size = 64
+    mshrs = 2
+    tgts_per_mshr = 8
+    size = '32kB'
+    assoc = 2
+    is_top_level = 'true'
+
+# Data Cache
+# All latencys assume a 1GHz clock rate, with a faster clock they would be faster
+class O3_ARM_v7a_DCache(BaseCache):
+    latency = '2ns'
+    block_size = 64
+    mshrs = 6
+    tgts_per_mshr = 8
+    size = '32kB'
+    assoc = 2
+    write_buffers = 16
+    is_top_level = 'true'
+
+# TLB Cache 
+# Use a cache as a L2 TLB
+class O3_ARM_v7aWalkCache(BaseCache):
+    latency = '4ns'
+    block_size = 64
+    mshrs = 6
+    tgts_per_mshr = 8
+    size = '1kB'
+    assoc = 8
+    write_buffers = 16
+    is_top_level = 'true'
+
+
+# L2 Cache
+# All latencys assume a 1GHz clock rate, with a faster clock they would be faster
+class O3_ARM_v7aL2(BaseCache):
+    latency = '12ns'
+    block_size = 64
+    mshrs = 16
+    tgts_per_mshr = 8
+    size = '1MB'
+    assoc = 16
+    write_buffers = 8
+    # Simple stride prefetcher
+    prefetch_policy = 'stride'
+    prefetch_on_access = 'true'
+    prefetch_latency = '1.0ns'
+    prefetch_degree = 8
+
+
diff --git a/configs/common/Options.py b/configs/common/Options.py
index 1941875bc..0932f2629 100644
--- a/configs/common/Options.py
+++ b/configs/common/Options.py
@@ -28,7 +28,8 @@
 
 # system options
 parser.add_option("--cpu-type", type="choice", default="atomic",
-                  choices = ["atomic", "timing", "detailed", "inorder"],
+                  choices = ["atomic", "timing", "detailed", "inorder",
+                             "arm_detailed"],
                   help = "type of cpu to run with")
 parser.add_option("-n", "--num-cpus", type="int", default=1)
 parser.add_option("--caches", action="store_true")
diff --git a/configs/common/Simulation.py b/configs/common/Simulation.py
index 434fe8369..193f8d487 100644
--- a/configs/common/Simulation.py
+++ b/configs/common/Simulation.py
@@ -34,6 +34,7 @@ import m5
 from m5.defines import buildEnv
 from m5.objects import *
 from m5.util import *
+from O3_ARM_v7a import *
 
 addToPath('../common')
 
@@ -42,11 +43,14 @@ def setCPUClass(options):
     atomic = False
     if options.cpu_type == "timing":
         class TmpClass(TimingSimpleCPU): pass
-    elif options.cpu_type == "detailed":
-        if not options.caches:
+    elif options.cpu_type == "detailed" or options.cpu_type == "arm_detailed":
+        if not options.caches and not options.ruby:
             print "O3 CPU must be used with caches"
             sys.exit(1)
-        class TmpClass(DerivO3CPU): pass
+        if options.cpu_type == "arm_detailed":
+            class TmpClass(O3_ARM_v7a_3): pass
+        else:
+            class TmpClass(DerivO3CPU): pass
     elif options.cpu_type == "inorder":
         if not options.caches:
             print "InOrder CPU must be used with caches"
diff --git a/configs/example/fs.py b/configs/example/fs.py
index 05e35c4ba..08484559a 100644
--- a/configs/example/fs.py
+++ b/configs/example/fs.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2010 ARM Limited
+# Copyright (c) 2010-2011 ARM Limited
 # All rights reserved.
 #
 # The license below extends only to copyright in the software and shall
@@ -157,23 +157,19 @@ test_sys.cpu = [TestCPUClass(cpu_id=i) for i in xrange(np)]
 
 CacheConfig.config_cache(options, test_sys)
 
+if bm[0]:
+    mem_size = bm[0].mem()
+else:
+    mem_size = SysConfig().mem()
 if options.caches or options.l2cache:
-    if bm[0]:
-        mem_size = bm[0].mem()
-    else:
-        mem_size = SysConfig().mem()
-    # For x86, we need to poke a hole for interrupt messages to get back to the
-    # CPU. These use a portion of the physical address space which has a
-    # non-zero prefix in the top nibble. Normal memory accesses have a 0
-    # prefix.
-    if buildEnv['TARGET_ISA'] == 'x86':
-        test_sys.bridge.filter_ranges_a=[AddrRange(0, Addr.max >> 4)]
-    else:
-        test_sys.bridge.filter_ranges_a=[AddrRange(0, Addr.max)]
-    test_sys.bridge.filter_ranges_b=[AddrRange(mem_size)]
     test_sys.iocache = IOCache(addr_range=mem_size)
     test_sys.iocache.cpu_side = test_sys.iobus.port
     test_sys.iocache.mem_side = test_sys.membus.port
+else:
+    test_sys.iobridge = Bridge(delay='50ns', nack_delay='4ns',
+                               ranges = [AddrRange(mem_size)])
+    test_sys.iobridge.slave = test_sys.iobus.port
+    test_sys.iobridge.master = test_sys.membus.port
 
 for i in xrange(np):
     if options.fastmem:
diff --git a/configs/example/se.py b/configs/example/se.py
index 56737d6d5..572364482 100644
--- a/configs/example/se.py
+++ b/configs/example/se.py
@@ -1,3 +1,15 @@
+# Copyright (c) 2012 ARM Limited
+# All rights reserved.
+#
+# The license below extends only to copyright in the software and shall
+# not be construed as granting a license to any other intellectual
+# property including but not limited to intellectual property relating
+# to a hardware implementation of the functionality of the software
+# licensed hereunder.  You may use the software subject to the license
+# terms below provided that you ensure that this notice is replicated
+# unmodified and in its entirety in all distributions of the software,
+# modified or unmodified, in source code or in binary form.
+#
 # Copyright (c) 2006-2008 The Regents of The University of Michigan
 # All rights reserved.
 #
@@ -152,20 +164,13 @@ if options.cpu_type == "detailed" or options.cpu_type == "inorder":
             process += [smt_process, ]
             smt_idx += 1
     numThreads = len(workloads)
-    
+
 if options.ruby:
-    if options.cpu_type == "detailed":
-        print >> sys.stderr, "Ruby only works with TimingSimpleCPU!!"
+    if not (options.cpu_type == "detailed" or options.cpu_type == "timing"):
+        print >> sys.stderr, "Ruby requires TimingSimpleCPU or O3CPU!!"
         sys.exit(1)
-    elif not options.cpu_type == "timing":
-        print >> sys.stderr, "****WARN:  using Timing CPU since it's needed by Ruby"
-
-    class CPUClass(TimingSimpleCPU): pass
-    test_mem_mode = 'timing'
-    FutureClass = None
-else:
-    (CPUClass, test_mem_mode, FutureClass) = Simulation.setCPUClass(options)
 
+(CPUClass, test_mem_mode, FutureClass) = Simulation.setCPUClass(options)
 CPUClass.clock = '2GHz'
 CPUClass.numThreads = numThreads;
 
@@ -179,7 +184,9 @@ if options.ruby:
     options.use_map = True
     Ruby.create_system(options, system)
     assert(options.num_cpus == len(system.ruby._cpu_ruby_ports))
+    system.system_port = system.ruby._sys_port_proxy.port
 else:
+    system.system_port = system.membus.port
     system.physmem.port = system.membus.port
     CacheConfig.config_cache(options, system)
 
diff --git a/configs/ruby/MESI_CMP_directory.py b/configs/ruby/MESI_CMP_directory.py
index 6e70944b7..79de421bb 100644
--- a/configs/ruby/MESI_CMP_directory.py
+++ b/configs/ruby/MESI_CMP_directory.py
@@ -89,6 +89,8 @@ def create_system(options, system, piobus, dma_devices, ruby_system):
                                       L1IcacheMemory = l1i_cache,
                                       L1DcacheMemory = l1d_cache,
                                       l2_select_num_bits = l2_bits,
+                                      send_evictions = (
+                                          options.cpu_type == "detailed"),
                                       ruby_system = ruby_system)
 
         cpu_seq = RubySequencer(version = i,
@@ -151,7 +153,9 @@ def create_system(options, system, piobus, dma_devices, ruby_system):
                                          cntrl_id = cntrl_count,
                                          directory = \
                                          RubyDirectoryMemory(version = i,
-                                                             size = dir_size),
+                                                             size = dir_size,
+                                                             use_map =
+                                                           options.use_map),
                                          memBuffer = mem_cntrl,
                                          ruby_system = ruby_system)
 
diff --git a/configs/ruby/MI_example.py b/configs/ruby/MI_example.py
index eeb81e8a3..13f4c9c80 100644
--- a/configs/ruby/MI_example.py
+++ b/configs/ruby/MI_example.py
@@ -81,6 +81,8 @@ def create_system(options, system, piobus, dma_devices, ruby_system):
         l1_cntrl = L1Cache_Controller(version = i,
                                       cntrl_id = cntrl_count,
                                       cacheMemory = cache,
+                                      send_evictions = (
+                                          options.cpu_type == "detailed"),
                                       ruby_system = ruby_system)
 
         cpu_seq = RubySequencer(version = i,
diff --git a/configs/ruby/MOESI_CMP_directory.py b/configs/ruby/MOESI_CMP_directory.py
index e3bc9ae85..f6baa4026 100644
--- a/configs/ruby/MOESI_CMP_directory.py
+++ b/configs/ruby/MOESI_CMP_directory.py
@@ -89,6 +89,8 @@ def create_system(options, system, piobus, dma_devices, ruby_system):
                                       L1IcacheMemory = l1i_cache,
                                       L1DcacheMemory = l1d_cache,
                                       l2_select_num_bits = l2_bits,
+                                      send_evictions = (
+                                          options.cpu_type == "detailed"),
                                       ruby_system = ruby_system)
 
         cpu_seq = RubySequencer(version = i,
diff --git a/configs/ruby/MOESI_CMP_token.py b/configs/ruby/MOESI_CMP_token.py
index d11bb320c..79e0f15f9 100644
--- a/configs/ruby/MOESI_CMP_token.py
+++ b/configs/ruby/MOESI_CMP_token.py
@@ -111,6 +111,8 @@ def create_system(options, system, piobus, dma_devices, ruby_system):
                                         not options.disable_dyn_timeouts,
                                       no_mig_atomic = not \
                                         options.allow_atomic_migration,
+                                      send_evictions = (
+                                          options.cpu_type == "detailed"),
                                       ruby_system = ruby_system)
 
         cpu_seq = RubySequencer(version = i,
diff --git a/configs/ruby/MOESI_hammer.py b/configs/ruby/MOESI_hammer.py
index 4cc377ec8..f50315599 100644
--- a/configs/ruby/MOESI_hammer.py
+++ b/configs/ruby/MOESI_hammer.py
@@ -104,6 +104,8 @@ def create_system(options, system, piobus, dma_devices, ruby_system):
                                       L2cacheMemory = l2_cache,
                                       no_mig_atomic = not \
                                         options.allow_atomic_migration,
+                                      send_evictions = (
+                                          options.cpu_type == "detailed"),
                                       ruby_system = ruby_system)
 
         cpu_seq = RubySequencer(version = i,
diff --git a/configs/ruby/Ruby.py b/configs/ruby/Ruby.py
index a07bea1bb..b2342eed4 100644
--- a/configs/ruby/Ruby.py
+++ b/configs/ruby/Ruby.py
@@ -1,3 +1,15 @@
+# Copyright (c) 2012 ARM Limited
+# All rights reserved.
+#
+# The license below extends only to copyright in the software and shall
+# not be construed as granting a license to any other intellectual
+# property including but not limited to intellectual property relating
+# to a hardware implementation of the functionality of the software
+# licensed hereunder.  You may use the software subject to the license
+# terms below provided that you ensure that this notice is replicated
+# unmodified and in its entirety in all distributions of the software,
+# modified or unmodified, in source code or in binary form.
+#
 # Copyright (c) 2006-2007 The Regents of The University of Michigan
 # Copyright (c) 2009 Advanced Micro Devices, Inc.
 # All rights reserved.
@@ -82,6 +94,17 @@ def create_system(options, system, piobus = None, dma_devices = []):
         print "Error: could not create sytem for ruby protocol %s" % protocol
         raise
 
+    # Create a port proxy for connecting the system port. This is
+    # independent of the protocol and kept in the protocol-agnostic
+    # part (i.e. here).
+    sys_port_proxy = RubyPortProxy(version = 0,
+                                   physMemPort = system.physmem.port,
+                                   physmem = system.physmem,
+                                   ruby_system = ruby)
+    # Give the system port proxy a SimObject parent without creating a
+    # full-fledged controller
+    system.sys_port_proxy = sys_port_proxy
+
     #
     # Set the network classes based on the command line options
     #
@@ -159,4 +182,5 @@ def create_system(options, system, piobus = None, dma_devices = []):
     ruby.profiler = ruby_profiler
     ruby.mem_size = total_mem_size
     ruby._cpu_ruby_ports = cpu_sequencers
+    ruby._sys_port_proxy = sys_port_proxy
     ruby.random_seed    = options.random_seed