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subsystem: add MaskROM to RocketSubsystem #2009

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merged 4 commits into from
Jun 22, 2019
Merged

subsystem: add MaskROM to RocketSubsystem #2009

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2c0aa5f
subsystem: add MaskROM to RocketSubsystem
hcook Jun 22, 2019
fc6f096
subsystem: key is called PeripheryMaskROMKey
hcook Jun 22, 2019
7d94381
subsystem: key is called PeripheryMaskROMKey
hcook Jun 22, 2019
f561c8f
subsystem: factor bus topology out of example system
hcook Jun 22, 2019
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8 changes: 7 additions & 1 deletion src/main/scala/subsystem/RocketSubsystem.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,6 @@ import freechips.rocketchip.diplomaticobjectmodel.logicaltree._
import freechips.rocketchip.diplomaticobjectmodel.model._
import freechips.rocketchip.tile._


// TODO: how specific are these to RocketTiles?
case class TileMasterPortParams(buffers: Int = 0, cork: Option[Boolean] = None)
case class TileSlavePortParams(buffers: Int = 0, blockerCtrlAddr: Option[BigInt] = None)
Expand Down Expand Up @@ -65,9 +64,16 @@ trait HasRocketTilesModuleImp extends HasTilesModuleImp
val outer: HasRocketTiles
}

// Field for specifying MaskROM addition to subsystem
case object PeripheryMaskROMKey extends Field[Seq[MaskROMParams]](Nil)

class RocketSubsystem(implicit p: Parameters) extends BaseSubsystem
with HasRocketTiles {
val tiles = rocketTiles

// add Mask ROM devices
val maskROMs = p(SubsystemMaskROMKey).map { MaskROM.attach(_, cbus) }

override lazy val module = new RocketSubsystemModuleImp(this)
}

Expand Down