coreplex: configString is a property of the RISCVPlatform

src/main/scala/coreplex/BaseCoreplex.scala

@@ -105,7 +105,6 @@ trait CoreplexNetworkModule extends HasCoreplexParameters {
 
   implicit val p = outer.p
 
-  {
   println("\nGenerated Address Map")
   for (manager <- outer.l1tol2.node.edgesIn(0).manager.managers) {
     val prot = (if (manager.supportsGet)     "R" else "") +
@@ -117,7 +116,6 @@ trait CoreplexNetworkModule extends HasCoreplexParameters {
     }
   }
 }
-}
 
 trait BankedL2CoherenceManagers extends CoreplexNetwork {
   val module: BankedL2CoherenceManagersModule

src/main/scala/coreplex/RISCVPlatform.scala

@@ -26,6 +26,11 @@ trait CoreplexRISCVPlatform extends CoreplexNetwork {
   clint.node := TLFragmenter(cbus_beatBytes, cbus_lineBytes)(cbus.node)
 
   plic.intnode := intBar.intnode
+
+  lazy val configString = {
+    val managers = l1tol2.node.edgesIn(0).manager.managers
+    rocketchip.GenerateConfigString(p, clint, plic, managers)
+  }
 }
 
 trait CoreplexRISCVPlatformBundle extends CoreplexNetworkBundle {
@@ -48,14 +53,6 @@ trait CoreplexRISCVPlatformModule extends CoreplexNetworkModule {
   val rtcLast = Reg(init = Bool(false), next=rtcSync)
   outer.clint.module.io.rtcTick := Reg(init = Bool(false), next=(rtcSync & (~rtcLast)))
 
-  {
+  println(s"\nGenerated Configuration String\n${outer.configString}")
-    val managers = outer.l1tol2.node.edgesIn(0).manager.managers
+  ConfigStringOutput.contents = Some(outer.configString)
-
-    // Allow something else to have override the config string
-    if (!ConfigStringOutput.contents.isDefined) {
-      ConfigStringOutput.contents = Some(rocketchip.GenerateConfigString(p, outer.clint, outer.plic, managers))
-    }
-
-    println(s"\nGenerated Configuration String\n${ConfigStringOutput.contents.get}")
-  }
 }

src/main/scala/rocketchip/ExampleTop.scala

@@ -11,7 +11,6 @@ import rocketchip._
 /** Example Top with Periphery */
 class ExampleTop[+C <: BaseCoreplex](_coreplex: Parameters => C)(implicit p: Parameters) extends BaseTop(_coreplex)
     with DirectConnection
-    with PeripheryBootROM
     with PeripheryExtInterrupts
     with PeripheryMasterAXI4Mem
     with PeripheryMasterAXI4MMIO {
@@ -19,18 +18,17 @@ class ExampleTop[+C <: BaseCoreplex](_coreplex: Parameters => C)(implicit p: Par
 }
 
 class ExampleTopBundle[+L <: ExampleTop[BaseCoreplex]](_outer: L) extends BaseTopBundle(_outer)
-    with PeripheryBootROMBundle
     with PeripheryExtInterruptsBundle
     with PeripheryMasterAXI4MemBundle
     with PeripheryMasterAXI4MMIOBundle
 
 class ExampleTopModule[+L <: ExampleTop[BaseCoreplex], +B <: ExampleTopBundle[L]](_outer: L, _io: () => B) extends BaseTopModule(_outer, _io)
-    with PeripheryBootROMModule
     with PeripheryExtInterruptsModule
     with PeripheryMasterAXI4MemModule
     with PeripheryMasterAXI4MMIOModule
 
 class ExampleRocketTop[+C <: DefaultCoreplex](_coreplex: Parameters => C)(implicit p: Parameters) extends ExampleTop(_coreplex)
+    with PeripheryBootROM
     with PeripheryDTM
     with PeripheryCounter
     with HardwiredResetVector {
@@ -38,11 +36,13 @@ class ExampleRocketTop[+C <: DefaultCoreplex](_coreplex: Parameters => C)(implic
 }
 
 class ExampleRocketTopBundle[+L <: ExampleRocketTop[DefaultCoreplex]](_outer: L) extends ExampleTopBundle(_outer)
+    with PeripheryBootROMBundle
     with PeripheryDTMBundle
     with PeripheryCounterBundle
     with HardwiredResetVectorBundle
 
 class ExampleRocketTopModule[+L <: ExampleRocketTop[DefaultCoreplex], +B <: ExampleRocketTopBundle[L]](_outer: L, _io: () => B) extends ExampleTopModule(_outer, _io)
+    with PeripheryBootROMModule
     with PeripheryDTMModule
     with PeripheryCounterModule
     with HardwiredResetVectorModule

src/main/scala/rocketchip/Periphery.scala

@@ -156,10 +156,12 @@ trait PeripheryMasterAXI4MMIOModule {
 
 trait PeripheryBootROM {
   this: TopNetwork =>
+  val coreplex: CoreplexRISCVPlatform
 
-  val bootrom_address = 0x1000
+  private val bootrom_address = 0x1000
-  val bootrom_size = 0x1000
+  private val bootrom_size = 0x1000
-  val bootrom = LazyModule(new TLROM(bootrom_address, bootrom_size, GenerateBootROM(p, bootrom_address), true, peripheryBusConfig.beatBytes))
+  private lazy val bootrom_contents = GenerateBootROM(p, bootrom_address, coreplex.configString)
+  val bootrom = LazyModule(new TLROM(bootrom_address, bootrom_size, bootrom_contents, true, peripheryBusConfig.beatBytes))
   bootrom.node := TLFragmenter(peripheryBusConfig.beatBytes, cacheBlockBytes)(peripheryBus.node)
 }
 

src/main/scala/rocketchip/Utils.scala

@@ -84,7 +84,7 @@ object GenerateConfigString {
 }
 
 object GenerateBootROM {
-  def apply(p: Parameters, address: BigInt) = {
+  def apply(p: Parameters, address: BigInt, configString: String) = {
     val romdata = Files.readAllBytes(Paths.get(p(BootROMFile)))
     val rom = ByteBuffer.wrap(romdata)
 
@@ -95,6 +95,6 @@ object GenerateBootROM {
     require(rom.getInt(12) == 0,
       "Config string address position should not be occupied by code")
     rom.putInt(12, configStringAddr)
-    rom.array() ++ (ConfigStringOutput.contents.get.getBytes.toSeq)
+    rom.array() ++ (configString.getBytes.toSeq)
   }
 }