Merge pull request #1105 from freechipsproject/axi4-xbar

axi4: add an Xbar

src/main/scala/tilelink/Filter.scala

@@ -42,7 +42,7 @@ class TLFilter(
         require (m.supportsPutFull.contains(o.supportsPutFull))
         require (m.supportsPutPartial.contains(o.supportsPutPartial))
         require (m.supportsHint.contains(o.supportsHint))
-        require (m.fifoId == o.fifoId) // could relax this, but hard to validate
+        require (!o.fifoId.isDefined || m.fifoId == o.fifoId)
       }
       out
     })})

src/main/scala/tilelink/RAMModel.scala

@@ -333,6 +333,9 @@ class TLRAMModel(log: String = "", ignoreErrorData: Boolean = false)(implicit p:
 
 object TLRAMModel
 {
+  def apply(log: String = "", ignoreErrorData: Boolean = false)(implicit p: Parameters) =
+    LazyModule(new TLRAMModel(log, ignoreErrorData)).node
+
   case class MonitorParameters(addressBits: Int, sizeBits: Int)
 
   class ByteMonitor(params: MonitorParameters) extends GenericParameterizedBundle(params) {