Add alternative Rocket Chip setup using local source checkout

emulator/build.sc

@@ -7,32 +7,96 @@ import scalalib._
 // support BSP
 import mill.bsp._
 
-object emulator extends ScalaModule {
-  def millSourcePath = os.pwd
-  def scalaVersion = "2.13.12"
+/** Local rocket-chip checkout path */
+def rocketRoot = os.Path("/workspace/rocket-chip")
 
+/** Common settings */
+trait CommonScala extends ScalaModule {
+  def scalaVersion = "2.13.12"
   def scalacOptions = Seq(
     "-language:reflectiveCalls",
     "-deprecation",
     "-feature",
     "-Xcheckinit",
     "-Ymacro-annotations",
   )
+
+
+  override def ivyDeps = Agg(
+    ivy"org.chipsalliance::chisel:6.0.0"
+  )
+
+  override def scalacPluginIvyDeps = Agg(
+    ivy"org.chipsalliance:::chisel-plugin:6.0.0"
+  )
+}
+// /** ---- Local rocket-chip submodules (from rocket-chip/dependencies/*) ----
+//   * These folders exist in your local clone. We compile them as source modules
+//   * so we don't rely on remote SNAPSHOT artifacts.
+//   *
+//   * Path assumptions (based on typical rocket-chip layout):
+//   *   rocket-chip/dependencies/cde/cde/src/...
+//   *   rocket-chip/dependencies/diplomacy/diplomacy/src/...
+//   *   rocket-chip/dependencies/hardfloat/hardfloat/src/...
+//   *
+//   * If your folder names differ slightly, adjust millSourcePath accordingly.
+//   */
+object cde extends CommonScala {
+  def millSourcePath = rocketRoot / "dependencies" / "cde" / "cde"
+}
+
+object diplomacy extends CommonScala {
+  def millSourcePath = rocketRoot / "dependencies" / "diplomacy" / "diplomacy"
+  override def moduleDeps = Seq(cde)
+}
+
+object hardfloat extends CommonScala {
+  def millSourcePath = rocketRoot / "dependencies" / "hardfloat" / "hardfloat"
+}
+
+/** ---- Local rocket-chip main module ---- */
+object rocketchip extends CommonScala {
+  def millSourcePath = rocketRoot
+
+  // Ensure rocket-chip sees its local submodules
+  override def moduleDeps = Seq(cde, diplomacy, hardfloat)
+
+  // rocket-chip needs extra libs: mainargs + json4s-jackson
+  override def ivyDeps = super.ivyDeps() ++ Agg(
+    ivy"com.lihaoyi::mainargs:0.7.6",
+    ivy"org.json4s::json4s-jackson:4.0.7"
+  )
+}
+
+
+/** ---- Your emulator module ---- */
+object emulator extends CommonScala {
+  def millSourcePath = os.pwd
+
+  // Make emulator depend on the local rocket-chip build outputs
+  override def moduleDeps = Seq(rocketchip)
+
   override def ivyDeps = Agg(
     ivy"org.chipsalliance::chisel:6.0.0",
-    ivy"edu.berkeley.cs::rocketchip-6.0.0:1.6-6.0.0-1b9f43352-SNAPSHOT",
     ivy"com.lihaoyi::pprint:0.9.0"
   )
+
   override def scalacPluginIvyDeps = Agg(
     ivy"org.chipsalliance:::chisel-plugin:6.0.0",
   )
 
-  // https://mill-build.org/mill/0.11.12/Scala_Module_Config.html
+  // Keep these repos (harmless), but no longer required for rocketchip SNAPSHOT
   val sonatypeReleases = Seq(
     coursier.maven.MavenRepository("https://oss.sonatype.org/content/repositories/snapshots/"),
     coursier.maven.MavenRepository("https://oss.sonatype.org/content/repositories/releases/"),
   )
+   val extraRepos = Seq(
+    coursier.maven.MavenRepository("https://repo.maven.apache.org/maven2"), 
+    coursier.maven.MavenRepository("https://maven.aliyun.com/repository/central"),
+    coursier.maven.MavenRepository("https://mirrors.cloud.tencent.com/nexus/repository/maven-public/")
+  )
+
   def repositoriesTask = T.task {
-    super.repositoriesTask() ++ sonatypeReleases
+    super.repositoriesTask() ++ extraRepos ++ sonatypeReleases
   }
-}
+}