diff -r b21b3aad6bd1 configs/common/FSConfig.py
--- a/configs/common/FSConfig.py	Tue Jun 10 17:44:39 2014 -0400
+++ b/configs/common/FSConfig.py	Fri Jun 13 10:32:27 2014 +0800
@@ -331,13 +331,13 @@
     interrupts_address_space_base = 0xa000000000000000
     APIC_range_size = 1 << 12;
 
-    x86_sys.membus = MemBus()
+    x86_sys.membus = CoherentBus()
 
     # North Bridge
     x86_sys.iobus = NoncoherentBus()
     x86_sys.bridge = Bridge(delay='50ns')
     x86_sys.bridge.master = x86_sys.iobus.slave
-    x86_sys.bridge.slave = x86_sys.membus.master
+    x86_sys.bridge.slave = x86_sys.membus.default
     # 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
@@ -423,6 +423,13 @@
     disk2.childImage(disk('linux-bigswap2.img'))
     self.pc.south_bridge.ide.disks = [disk0, disk2]
 
+    # Ethernet
+    self.pc.ethernet = IGbE_e1000(pci_bus=0, pci_dev=2, pci_func=0,
+                                  InterruptLine=13, InterruptPin=1)
+    self.pc.ethernet.pio = self.iobus.master
+    self.pc.ethernet.config = self.iobus.master
+    self.pc.ethernet.dma = self.iobus.slave
+
     # Add in a Bios information structure.
     structures = [X86SMBiosBiosInformation()]
     self.smbios_table.structures = structures
@@ -444,18 +451,18 @@
             address = 0xfec00000)
     self.pc.south_bridge.io_apic.apic_id = io_apic.id
     base_entries.append(io_apic)
-    isa_bus = X86IntelMPBus(bus_id = 0, bus_type='ISA')
+    pci_bus = X86IntelMPBus(bus_id = 0, bus_type='PCI')
+    base_entries.append(pci_bus)
+    isa_bus = X86IntelMPBus(bus_id = 1, bus_type='ISA')
     base_entries.append(isa_bus)
-    pci_bus = X86IntelMPBus(bus_id = 1, bus_type='PCI')
-    base_entries.append(pci_bus)
-    connect_busses = X86IntelMPBusHierarchy(bus_id=0,
-            subtractive_decode=True, parent_bus=1)
+    connect_busses = X86IntelMPBusHierarchy(bus_id=1,
+            subtractive_decode=True, parent_bus=0)
     ext_entries.append(connect_busses)
     pci_dev4_inta = X86IntelMPIOIntAssignment(
             interrupt_type = 'INT',
             polarity = 'ConformPolarity',
             trigger = 'ConformTrigger',
-            source_bus_id = 1,
+            source_bus_id = 0,
             source_bus_irq = 0 + (4 << 2),
             dest_io_apic_id = io_apic.id,
             dest_io_apic_intin = 16)
@@ -465,7 +472,7 @@
                 interrupt_type = 'ExtInt',
                 polarity = 'ConformPolarity',
                 trigger = 'ConformTrigger',
-                source_bus_id = 0,
+                source_bus_id = 1,
                 source_bus_irq = irq,
                 dest_io_apic_id = io_apic.id,
                 dest_io_apic_intin = 0)
@@ -474,7 +481,7 @@
                 interrupt_type = 'INT',
                 polarity = 'ConformPolarity',
                 trigger = 'ConformTrigger',
-                source_bus_id = 0,
+                source_bus_id = 1,
                 source_bus_irq = irq,
                 dest_io_apic_id = io_apic.id,
                 dest_io_apic_intin = apicPin)
@@ -525,7 +532,7 @@
 
     # Command line
     self.boot_osflags = 'earlyprintk=ttyS0 console=ttyS0 lpj=7999923 ' + \
-                        'root=/dev/hda1'
+                        'root=/dev/sda1'
     self.kernel = binary('x86_64-vmlinux-2.6.22.9')
     return self