Add option to disable ChipTop port dontTouch

generators/chipyard/src/main/scala/IOBinders.scala

@@ -51,6 +51,12 @@ case object IOBinders extends Field[Map[String, Seq[IOBinderFunction]]](
   Map[String, Seq[IOBinderFunction]]().withDefaultValue(Nil)
 )
 
+case object DontTouchIOBindersPorts extends Field[Boolean](true)
+
+class WithDontTouchIOBinders(b: Boolean = true) extends Config((site, here, up) => {
+  case DontTouchIOBindersPorts => b
+})
+
 abstract trait HasIOBinders { this: LazyModule =>
   val lazySystem: LazyModule
   private val iobinders = p(IOBinders)
@@ -76,8 +82,10 @@ abstract trait HasIOBinders { this: LazyModule =>
   val iocellMap = InModuleBody { iobinders.keys.map(k => k -> (lzyFlattened(k)._2 ++ impFlattened(k)._2)).toMap }
 
   InModuleBody {
-    portMap.values.foreach(_.foreach(dontTouch(_)))
-  
+    if (p(DontTouchIOBindersPorts)) {
+      portMap.values.foreach(_.foreach(dontTouch(_)))
+    }
+
     println("IOCells generated by IOBinders:")
     for ((k, v) <- iocellMap) {
       if (!v.isEmpty) {

generators/chipyard/src/main/scala/config/MMIOAcceleratorConfigs.scala

@@ -9,6 +9,7 @@ import freechips.rocketchip.diplomacy.{AsynchronousCrossing}
 
 // DOC include start: FFTRocketConfig
 class FFTRocketConfig extends Config(
+  new chipyard.iobinders.WithDontTouchIOBinders(false) ++              // TODO: hack around dontTouch not working in SFC
   new fftgenerator.WithFFTGenerator(numPoints=8, width=16, decPt=8) ++ // add 8-point mmio fft at the default addr (0x2400) with 16bit fixed-point numbers.
   new freechips.rocketchip.subsystem.WithNBigCores(1) ++
   new chipyard.config.AbstractConfig)
@@ -58,6 +59,7 @@ class LargeNVDLARocketConfig extends Config(
   new chipyard.config.AbstractConfig)
 
 class ManyMMIOAcceleratorRocketConfig extends Config(
+  new chipyard.iobinders.WithDontTouchIOBinders(false) ++   // TODO: hack around dontTouch not working in SFC
   new fftgenerator.WithFFTGenerator(numPoints=8, width=16, decPt=8) ++ // add 8-point mmio fft at the default addr (0x2400) with 16bit fixed-point numbers.
   new nvidia.blocks.dla.WithNVDLA("small") ++               // add a small NVDLA
   new chipyard.example.WithStreamingPassthrough ++          // use top with tilelink-controlled streaming passthrough

generators/chipyard/src/main/scala/config/RocketConfigs.scala

@@ -12,6 +12,7 @@ class RocketConfig extends Config(
   new chipyard.config.AbstractConfig)
 
 class TinyRocketConfig extends Config(
+  new chipyard.iobinders.WithDontTouchIOBinders(false) ++         // TODO FIX: Don't dontTouch the ports
   new chipyard.config.WithTLSerialLocation(
     freechips.rocketchip.subsystem.FBUS,
     freechips.rocketchip.subsystem.PBUS) ++                       // attach TL serial adapter to f/p busses

generators/chipyard/src/main/scala/config/TutorialConfigs.scala

@@ -77,6 +77,7 @@ class TutorialSha3BlackBoxConfig extends Config(
 
 // Tutorial Phase 5: Map a multicore heterogeneous SoC with multiple cores and memory-mapped accelerators
 class TutorialNoCConfig extends Config(
+  new chipyard.iobinders.WithDontTouchIOBinders(false) ++
   // Try changing the dimensions of the Mesh topology
   new constellation.soc.WithGlobalNoC(constellation.soc.GlobalNoCParams(
     NoCParams(