optionally export detailed status information in DirectGroundTest

src/main/scala/Configs.scala

@@ -307,6 +307,7 @@ class BaseConfig extends Config (
       case ConfigString => makeConfigString()
       case GlobalAddrMap => globalAddrMap
       case EnableL2Logging => false
+      case ExportGroundTestStatus => false
       case _ => throw new CDEMatchError
   }},
   knobValues = {
@@ -416,6 +417,7 @@ class WithRV32 extends Config(
 class FPGAConfig extends Config (
   (pname,site,here) => pname match {
     case NAcquireTransactors => 4
+    case ExportGroundTestStatus => true
     case _ => throw new CDEMatchError
   }
 )

src/main/scala/DirectGroundTest.scala

@@ -6,10 +6,15 @@ import groundtest._
 import uncore.tilelink._
 import uncore.agents._
 
+case object ExportGroundTestStatus extends Field[Boolean]
+
 class DirectGroundTestTop(topParams: Parameters) extends Module
     with HasTopLevelParameters {
   implicit val p = topParams
-  val io = new TopIO
+  val io = new TopIO {
+    // Need to export this for FPGA testing, but not for simulator
+    val status = if (p(ExportGroundTestStatus)) Some(new GroundTestStatus) else None
+  }
 
   // Not using the debug 
   io.debug.req.ready := Bool(false)
@@ -28,7 +33,7 @@ class DirectGroundTestTop(topParams: Parameters) extends Module
   require(test.io.mem.size == nBanksPerMemChannel)
   require(test.io.ptw.size == 0)
 
-  when (test.io.finished) { stop() }
+  when (test.io.status.finished) { stop() }
 
   val mem_ic = Module(new TileLinkMemoryInterconnect(
     nBanksPerMemChannel, nMemChannels)(outermostParams))
@@ -37,4 +42,26 @@ class DirectGroundTestTop(topParams: Parameters) extends Module
   io.mem_axi.zip(mem_ic.io.out).foreach { case (nasti, tl) =>
     TopUtils.connectTilelinkNasti(nasti, tl)(outermostParams)
   }
+  io.status.map { status =>
+    val s_running :: s_finished :: s_errored :: s_timeout :: Nil = Enum(Bits(), 4)
+    val state = Reg(init = s_running)
+    val error_code = Reg(status.error.bits)
+    val timeout_code = Reg(status.timeout.bits)
+    when (state === s_running) {
+      when (test.io.status.finished) { state := s_finished }
+      when (test.io.status.error.valid) {
+        state := s_errored
+        error_code := test.io.status.error.bits
+      }
+      when (test.io.status.timeout.valid) {
+        state := s_timeout
+        timeout_code := test.io.status.timeout.bits
+      }
+    }
+    status.finished := (state === s_finished)
+    status.error.valid := (state === s_errored)
+    status.error.bits := error_code
+    status.timeout.valid := (state === s_timeout)
+    status.timeout.bits := timeout_code
+  }
 }

src/main/scala/TestConfigs.scala

@@ -300,3 +300,8 @@ class DirectMemtestConfig extends Config(
   new WithDirectMemtest ++ new GroundTestConfig)
 class DirectComparatorConfig extends Config(
   new WithDirectComparator ++ new GroundTestConfig)
+
+class DirectMemtestFPGAConfig extends Config(
+  new FPGAConfig ++ new DirectMemtestConfig)
+class DirectComparatorFPGAConfig extends Config(
+  new FPGAConfig ++ new DirectComparatorConfig)