Refactor package hierarchy and remove legacy bus protocol implementations (#845)

* Refactors package hierarchy.

Additionally:
  - Removes legacy ground tests and configs
  - Removes legacy bus protocol implementations
  - Removes NTiles
  - Adds devices package
  - Adds more functions to util package

src/main/scala/diplomacy/AddressDecoder.scala

@@ -1,8 +1,8 @@
 // See LICENSE.SiFive for license details.
 
-package diplomacy
+package freechips.rocketchip.diplomacy
 
-import Chisel._
+import Chisel.log2Ceil
 import scala.math.{max,min}
 
 object AddressDecoder

src/main/scala/diplomacy/DeviceTree.scala

@@ -1,9 +1,8 @@
 // See LICENSE.SiFive for license details.
 
-package diplomacy
+package freechips.rocketchip.diplomacy
 
-import Chisel._
-import config._
+import freechips.rocketchip.config.Field
 import sys.process._
 import java.io.{ByteArrayInputStream, ByteArrayOutputStream}
 

src/main/scala/diplomacy/JSON.scala

@@ -1,6 +1,6 @@
 // See LICENSE.SiFive for license details.
 
-package diplomacy
+package freechips.rocketchip.diplomacy
 
 import scala.collection.immutable.SortedMap
 

src/main/scala/diplomacy/LazyModule.scala

@@ -1,11 +1,11 @@
 // See LICENSE.SiFive for license details.
 
-package diplomacy
+package freechips.rocketchip.diplomacy
 
 import Chisel._
-import config._
 import chisel3.experimental.{BaseModule, RawModule, MultiIOModule}
 import chisel3.internal.sourceinfo.{SourceInfo, SourceLine, UnlocatableSourceInfo}
+import freechips.rocketchip.config.Parameters
 
 abstract class LazyModule()(implicit val p: Parameters)
 {

src/main/scala/diplomacy/Monitor.scala

@@ -1,10 +1,9 @@
 // See LICENSE.SiFive for license details.
 
-package diplomacy
+package freechips.rocketchip.diplomacy
 
-import Chisel._
 import chisel3.internal.sourceinfo.{SourceInfo, SourceLine}
-import config._
+import freechips.rocketchip.config.Parameters
 
 abstract class MonitorBase(implicit sourceInfo: SourceInfo, p: Parameters) extends LazyModule()(p) {
   override val module: LazyModuleImp

src/main/scala/diplomacy/Nodes.scala

@@ -1,12 +1,12 @@
 // See LICENSE.SiFive for license details.
 
-package diplomacy
+package freechips.rocketchip.diplomacy
 
 import Chisel._
-import config._
-import util.HeterogeneousBag
-import scala.collection.mutable.ListBuffer
 import chisel3.internal.sourceinfo.SourceInfo
+import freechips.rocketchip.config.Parameters
+import freechips.rocketchip.util.HeterogeneousBag
+import scala.collection.mutable.ListBuffer
 
 // DI = Downwards flowing Parameters received on the inner side of the node
 // UI = Upwards   flowing Parameters generated by the inner side of the node

src/main/scala/diplomacy/Parameters.scala

@@ -1,6 +1,6 @@
 // See LICENSE.SiFive for license details.
 
-package diplomacy
+package freechips.rocketchip.diplomacy
 
 import Chisel._
 

src/main/scala/diplomacy/Resources.scala

@@ -1,9 +1,8 @@
 // See LICENSE.SiFive for license details.
 
-package diplomacy
+package freechips.rocketchip.diplomacy
 
-import Chisel._
-import config._
+import Chisel.log2Ceil
 import scala.collection.immutable.{ListMap,SortedMap}
 
 sealed trait ResourceValue

src/main/scala/diplomacy/package.scala

@@ -1,6 +1,7 @@
 // See LICENSE.SiFive for license details.
 
-import Chisel._
+package freechips.rocketchip
+
 import chisel3.internal.sourceinfo.{SourceInfo, SourceLine, UnlocatableSourceInfo}
 
 package object diplomacy