CsrPlugin now implement a IWake interface

DebugPlugin now wake the CPU if a halt is asked to flush the pipeline

src/main/scala/vexriscv/plugin/CsrPlugin.scala

@@ -311,8 +311,11 @@ trait CsrInterface{
 trait IContextSwitching{
   def isContextSwitching : Bool
 }
+trait IWake{
+  def askWake() : Unit
+}
 
-class CsrPlugin(val config: CsrPluginConfig) extends Plugin[VexRiscv] with ExceptionService with PrivilegeService with InterruptionInhibitor with ExceptionInhibitor with IContextSwitching with CsrInterface{
+class CsrPlugin(val config: CsrPluginConfig) extends Plugin[VexRiscv] with ExceptionService with PrivilegeService with InterruptionInhibitor with ExceptionInhibitor with IContextSwitching with CsrInterface with IWake{
   import config._
   import CsrAccess._
 
@@ -338,6 +341,10 @@ class CsrPlugin(val config: CsrPluginConfig) extends Plugin[VexRiscv] with Excep
   var privilege : UInt = null
   var selfException : Flow[ExceptionCause] = null
   var contextSwitching : Bool = null
+  var thirdPartyWake : Bool = null
+
+  override def askWake(): Unit = thirdPartyWake := True
+
   override def isContextSwitching = contextSwitching
 
   object EnvCtrlEnum extends SpinalEnum(binarySequential){
@@ -378,6 +385,8 @@ class CsrPlugin(val config: CsrPluginConfig) extends Plugin[VexRiscv] with Excep
   override def setup(pipeline: VexRiscv): Unit = {
     import pipeline.config._
 
+    thirdPartyWake = False
+
     val defaultEnv = List[(Stageable[_ <: BaseType],Any)](
     )
 
@@ -886,7 +895,7 @@ class CsrPlugin(val config: CsrPluginConfig) extends Plugin[VexRiscv] with Excep
         import execute._
         //Manage WFI instructions
         val inWfi = False.addTag(Verilator.public)
-        val wfiWake = RegNext(interruptSpecs.map(_.cond).orR) init(False)
+        val wfiWake = RegNext(interruptSpecs.map(_.cond).orR || thirdPartyWake) init(False)
         if(wfiGenAsWait) when(arbitration.isValid && input(ENV_CTRL) === EnvCtrlEnum.WFI){
           inWfi := True
           when(!wfiWake){

src/main/scala/vexriscv/plugin/DebugPlugin.scala

@@ -246,6 +246,11 @@ class DebugPlugin(val debugClockDomain : ClockDomain, hardwareBreakpointCount :
         }
         if(pipeline.things.contains(DEBUG_BYPASS_CACHE)) pipeline(DEBUG_BYPASS_CACHE) := True
       }
+
+      val wakeService = serviceElse(classOf[IWake], null)
+      if(wakeService != null) when(haltIt){
+        wakeService.askWake()
+      }
     }}
   }
 }