separate PWM and basic example into separate packages

src/main/scala/Configs.scala

@@ -1,27 +0,0 @@
-package example
-
-import cde.{Parameters, Config, CDEMatchError}
-import testchipip.WithSerialAdapter
-import chisel3._
-import diplomacy.LazyModule
-
-class WithExampleTop extends Config(
-  (pname, site, here) => pname match {
-    case BuildExampleTop => (p: Parameters) => LazyModule(new ExampleTop(p))
-    case _ => throw new CDEMatchError
-  })
-
-class WithPWM extends Config(
-  (pname, site, here) => pname match {
-    case BuildExampleTop => (p: Parameters) => LazyModule(new ExampleTopWithPWM(p))
-    case _ => throw new CDEMatchError
-  })
-
-class SerialAdapterConfig extends Config(
-  new WithSerialAdapter ++ new rocketchip.BaseConfig)
-
-class DefaultExampleConfig extends Config(
-  new WithExampleTop ++ new SerialAdapterConfig)
-
-class PWMExampleConfig extends Config(
-  new WithPWM ++ new SerialAdapterConfig)

src/main/scala/example/Configs.scala

@@ -0,0 +1,7 @@
+package example
+
+import cde.{Parameters, Config, CDEMatchError}
+import testchipip.WithSerialAdapter
+
+class DefaultExampleConfig extends Config(
+  new WithSerialAdapter ++ new rocketchip.BaseConfig)

src/main/scala/example/TestHarness.scala

@@ -5,9 +5,7 @@ import diplomacy.LazyModule
 import rocketchip._
 import testchipip._
 import chisel3._
-import cde.{Parameters, Field}
-
-case object BuildExampleTop extends Field[Parameters => ExampleTop]
+import cde.Parameters
 
 class TestHarness(implicit val p: Parameters) extends Module {
   val io = new Bundle {
@@ -16,7 +14,7 @@ class TestHarness(implicit val p: Parameters) extends Module {
 
   def buildTop(p: Parameters): ExampleTop = LazyModule(new ExampleTop(p))
 
-  val dut = p(BuildExampleTop)(p).module
+  val dut = buildTop(p).module
   val ser = Module(new SimSerialWrapper(p(SerialInterfaceWidth)))
 
   val nMemChannels = dut.io.mem_axi.size

src/main/scala/example/Top.scala

@@ -2,7 +2,6 @@ package example
 
 import chisel3._
 import cde.Parameters
-import diplomacy.LazyModule
 import testchipip._
 import rocketchip._
 
@@ -22,15 +21,3 @@ class ExampleTopModule[+L <: ExampleTop, +B <: ExampleTopBundle](p: Parameters,
   with PeripheryBootROMModule with PeripheryCoreplexLocalInterrupterModule
   with PeripheryMasterMemModule with PeripherySerialModule
   with HardwiredResetVector with DirectConnection with NoDebug
-
-class ExampleTopWithPWM(q: Parameters) extends ExampleTop(q)
-    with PeripheryPWM {
-  override lazy val module = Module(
-    new ExampleTopWithPWMModule(p, this, new ExampleTopWithPWMBundle(p)))
-}
-
-class ExampleTopWithPWMBundle(p: Parameters) extends ExampleTopBundle(p)
-  with PeripheryPWMBundle
-
-class ExampleTopWithPWMModule(p: Parameters, l: ExampleTopWithPWM, b: => ExampleTopWithPWMBundle)
-  extends ExampleTopModule(p, l, b) with PeripheryPWMModule

src/main/scala/pwm/Configs.scala

@@ -0,0 +1,6 @@
+package pwm
+
+import cde.{Parameters, Config, CDEMatchError}
+import testchipip.WithSerialAdapter
+
+class PWMConfig extends Config(new example.DefaultExampleConfig)

src/main/scala/pwm/PWM.scala

@@ -1,4 +1,4 @@
-package example
+package pwm
 
 import chisel3._
 import chisel3.util._

src/main/scala/pwm/TestHarness.scala

@@ -0,0 +1,17 @@
+package pwm
+
+import util.GeneratorApp
+import cde.Parameters
+import diplomacy.LazyModule
+
+class TestHarness(q: Parameters) extends example.TestHarness()(q) {
+  override def buildTop(p: Parameters) =
+    LazyModule(new ExampleTopWithPWM(p))
+}
+
+object Generator extends GeneratorApp {
+  val longName = names.topModuleProject + "." +
+                 names.topModuleClass + "." +
+                 names.configs
+  generateFirrtl
+}

src/main/scala/pwm/Top.scala

@@ -0,0 +1,17 @@
+package pwm
+
+import chisel3._
+import example._
+import cde.Parameters
+
+class ExampleTopWithPWM(q: Parameters) extends ExampleTop(q)
+    with PeripheryPWM {
+  override lazy val module = Module(
+    new ExampleTopWithPWMModule(p, this, new ExampleTopWithPWMBundle(p)))
+}
+
+class ExampleTopWithPWMBundle(p: Parameters) extends ExampleTopBundle(p)
+  with PeripheryPWMBundle
+
+class ExampleTopWithPWMModule(p: Parameters, l: ExampleTopWithPWM, b: => ExampleTopWithPWMBundle)
+  extends ExampleTopModule(p, l, b) with PeripheryPWMModule