diff --git a/src/cpu/o3/O3CPU.py b/src/cpu/o3/O3CPU.py
index e031faefa..e691cfe5d 100644
--- a/src/cpu/o3/O3CPU.py
+++ b/src/cpu/o3/O3CPU.py
@@ -55,7 +55,7 @@ class DerivO3CPU(BaseCPU):
             checker.itb = Parent.itb
             checker.dtb = Parent.dtb
 
-    cachePorts = Param.Unsigned("Cache Ports")
+    cachePorts = Param.Unsigned(200, "Cache Ports")
     icache_port = Port("Instruction Port")
     dcache_port = Port("Data Port")
     _mem_ports = ['icache_port', 'dcache_port']
@@ -137,15 +137,15 @@ class DerivO3CPU(BaseCPU):
     function_trace = Param.Bool(False, "Enable function trace")
     function_trace_start = Param.Tick(0, "Cycle to start function trace")
 
-    smtNumFetchingThreads = Param.Unsigned("SMT Number of Fetching Threads")
-    smtFetchPolicy = Param.String("SMT Fetch policy")
-    smtLSQPolicy    = Param.String("SMT LSQ Sharing Policy")
-    smtLSQThreshold = Param.String("SMT LSQ Threshold Sharing Parameter")
-    smtIQPolicy    = Param.String("SMT IQ Sharing Policy")
-    smtIQThreshold = Param.String("SMT IQ Threshold Sharing Parameter")
-    smtROBPolicy   = Param.String("SMT ROB Sharing Policy")
-    smtROBThreshold = Param.String("SMT ROB Threshold Sharing Parameter")
-    smtCommitPolicy = Param.String("SMT Commit Policy")
+    smtNumFetchingThreads = Param.Unsigned(1, "SMT Number of Fetching Threads")
+    smtFetchPolicy = Param.String('SingleThread', "SMT Fetch policy")
+    smtLSQPolicy    = Param.String('Partitioned', "SMT LSQ Sharing Policy")
+    smtLSQThreshold = Param.Int(100, "SMT LSQ Threshold Sharing Parameter")
+    smtIQPolicy    = Param.String('Partitioned', "SMT IQ Sharing Policy")
+    smtIQThreshold = Param.Int(100, "SMT IQ Threshold Sharing Parameter")
+    smtROBPolicy   = Param.String('Partitioned', "SMT ROB Sharing Policy")
+    smtROBThreshold = Param.Int(100, "SMT ROB Threshold Sharing Parameter")
+    smtCommitPolicy = Param.String('RoundRobin', "SMT Commit Policy")
 
     def addPrivateSplitL1Caches(self, ic, dc):
         BaseCPU.addPrivateSplitL1Caches(self, ic, dc)
diff --git a/src/dev/Ethernet.py b/src/dev/Ethernet.py
index e81862a96..587087640 100644
--- a/src/dev/Ethernet.py
+++ b/src/dev/Ethernet.py
@@ -64,7 +64,8 @@ class EtherDump(SimObject):
 
 class IGbE(PciDevice):
     type = 'IGbE'
-    hardware_address = Param.String("Ethernet Hardware Address")
+    hardware_address = Param.EthernetAddr(NextEthernetAddr,
+        "Ethernet Hardware Address")
     use_flow_control = Param.Bool(False,
         "Should we use xon/xoff flow contorl (UNIMPLEMENTD)")
     rx_fifo_size = Param.MemorySize('384kB', "Size of the rx FIFO")
@@ -100,9 +101,9 @@ class IGbEInt(EtherInt):
     type = 'IGbEInt'
     device = Param.IGbE("Ethernet device of this interface")
 
-
-
 class EtherDevBase(PciDevice):
+    type = 'EtherDevBase'
+    abstract = True
     hardware_address = Param.EthernetAddr(NextEthernetAddr,
         "Ethernet Hardware Address")
 
diff --git a/src/mem/cache/BaseCache.py b/src/mem/cache/BaseCache.py
index 32f3f0174..55b68f81f 100644
--- a/src/mem/cache/BaseCache.py
+++ b/src/mem/cache/BaseCache.py
@@ -90,3 +90,4 @@ class BaseCache(MemObject):
          "Only prefetch on data not on instruction accesses")
     cpu_side = Port("Port on side closer to CPU")
     mem_side = Port("Port on side closer to MEM")
+    addr_range = VectorParam.AddrRange(AllMemory, "The address range in bytes")
diff --git a/src/sim/Process.py b/src/sim/Process.py
index 16be65fd4..34ff6c394 100644
--- a/src/sim/Process.py
+++ b/src/sim/Process.py
@@ -40,7 +40,7 @@ class LiveProcess(Process):
     type = 'LiveProcess'
     executable = Param.String('', "executable (overrides cmd[0] if set)")
     cmd = VectorParam.String("command line (executable plus arguments)")
-    env = VectorParam.String('', "environment settings")
+    env = VectorParam.String([], "environment settings")
     cwd = Param.String('', "current working directory")
     input = Param.String('cin', "filename for stdin")
     uid = Param.Int(100, 'user id')
diff --git a/src/sim/System.py b/src/sim/System.py
index b37e385c1..3f4c57f0c 100644
--- a/src/sim/System.py
+++ b/src/sim/System.py
@@ -39,6 +39,7 @@ class System(SimObject):
     physmem = Param.PhysicalMemory(Parent.any, "phsyical memory")
     mem_mode = Param.MemoryMode('atomic', "The mode the memory system is in")
     if build_env['FULL_SYSTEM']:
+        abstract = True
         boot_cpu_frequency = Param.Frequency(Self.cpu[0].clock.frequency,
                                              "boot processor frequency")
         init_param = Param.UInt64(0, "numerical value to pass into simulator")