Bump rocket, make possible to use published deps (#47)

* Use published rocketchip

* Simulator works!

* Gitignore was masking csrc

* Fix broken submodules

* Update gitignore

* Fix things up

* Some more cleanup

* Clean up so that using maven works

* Incorporate feedback

* Oops

* Add workaround for some of csrc

* Forgot dtm and jtag

* Make name better and add comment

* Extraneous comment

* Fix includes.

After running a clean build, I realized old build state was masking this
problem. verisim/csrc needs to be in the include path until we find a more
permanent solution to our problem.

* Add target to generate verilator-specific files.

* Ignore DS_Store

* Generate bootrom from testchipip

* Oops

* Add extraneous rocket-dsptools reference

build.sbt

@@ -12,6 +12,7 @@ lazy val commonSettings = Seq(
   libraryDependencies += "org.json4s" %% "json4s-native" % "3.5.3",
   libraryDependencies += "org.scala-lang" % "scala-reflect" % scalaVersion.value,
   libraryDependencies += "edu.berkeley.cs" %% "firrtl-interpreter" % "1.2-SNAPSHOT",
+  libraryDependencies += "com.github.scopt" %% "scopt" % "3.7.1",
   addCompilerPlugin("org.scalamacros" % "paradise" % "2.1.0" cross CrossVersion.full),
   resolvers ++= Seq(
     Resolver.sonatypeRepo("snapshots"),
@@ -23,18 +24,28 @@ lazy val rocketchip = RootProject(file("rocket-chip"))
 lazy val testchipip = project.settings(commonSettings)
   .dependsOn(rocketchip)
 
-lazy val example = (project in file("."))
+// Checks for -DROCKET_USE_MAVEN.
+// If it's there, use a maven dependency.
+// Else, depend on subprojects in git submodules.
+def conditionalDependsOn(prj: Project): Project = {
+  if (sys.props.contains("ROCKET_USE_MAVEN")) {
+    prj.settings(Seq(
+      libraryDependencies += "edu.berkeley.cs" %% "testchipip" % "1.0-020719-SNAPSHOT",
+    ))
+  } else {
+    prj.dependsOn(testchipip)
+  }
+}
+lazy val example = conditionalDependsOn(project in file("."))
   .settings(commonSettings)
-  .dependsOn(testchipip)
 
-lazy val tapeout = (project in file("./barstools/tapeout/"))
+lazy val tapeout = conditionalDependsOn(project in file("./barstools/tapeout/"))
   .settings(commonSettings)
-  .dependsOn(rocketchip)
 
 lazy val mdf = (project in file("./barstools/mdf/scalalib/"))
 
-lazy val `barstools-macros` = (project in file("./barstools/macros/"))
+lazy val `barstools-macros` = conditionalDependsOn(project in file("./barstools/macros/"))
   .enablePlugins(sbtassembly.AssemblyPlugin)
   .settings(commonSettings)
-  .dependsOn(rocketchip, mdf)
+  .dependsOn(mdf)