rocket-chip/rocket/src/main/scala/core.scala

package rocket

import Chisel._
import uncore.constants.MemoryOpConstants._
import Util._

class RocketIO(implicit conf: RocketConfiguration) extends Bundle
{
  val host = new HTIFIO(conf.tl.ln.nClients)
  val imem = new CPUFrontendIO()(conf.icache)
  val dmem = new HellaCacheIO()(conf.dcache)
  val ptw = new DatapathPTWIO().flip
  val rocc = new RoCCInterface().flip
}

class Core(implicit conf: RocketConfiguration) extends Module
{
  val io    = new RocketIO
   
  val ctrl  = Module(new Control)
  val dpath = Module(new Datapath)

  val fpu: FPU = if (conf.fpu) {
    val fpu = Module(new FPU(4,6))
    dpath.io.fpu <> fpu.io.dpath
    ctrl.io.fpu <> fpu.io.ctrl
    fpu.io.sfma.valid := Bool(false) // hook these up to coprocessor?
    fpu.io.dfma.valid := Bool(false)
    fpu
  } else null

  ctrl.io.dpath <> dpath.io.ctrl
  dpath.io.host <> io.host

  ctrl.io.imem <> io.imem
  dpath.io.imem <> io.imem

  ctrl.io.dmem <> io.dmem
  dpath.io.dmem <> io.dmem

  dpath.io.ptw <> io.ptw

  ctrl.io.rocc <> io.rocc
  dpath.io.rocc <> io.rocc
}