import Chisel._
import chisel3.experimental.{withClockAndReset}
import freechips.rocketchip.config.Field
-import freechips.rocketchip.util.SynchronizerShiftRegInit
-import freechips.rocketchip.coreplex.{HasPeripheryBus, PeripheryBusParams, HasInterruptBus}
-import freechips.rocketchip.diplomacy.{LazyModule, LazyMultiIOModuleImp}
-import sifive.blocks.devices.pinctrl.{Pin}
+import freechips.rocketchip.diplomacy.{LazyModule, LazyModuleImp}
+import freechips.rocketchip.subsystem.{BaseSubsystem, PeripheryBusKey}
case object PeripheryUARTKey extends Field[Seq[UARTParams]]
-trait HasPeripheryUART extends HasPeripheryBus with HasInterruptBus {
- private val divinit = (p(PeripheryBusParams).frequency / 115200).toInt
+trait HasPeripheryUART { this: BaseSubsystem =>
+ private val divinit = (p(PeripheryBusKey).frequency / 115200).toInt
val uartParams = p(PeripheryUARTKey).map(_.copy(divisorInit = divinit))
- val uarts = uartParams map { params =>
- val uart = LazyModule(new TLUART(pbus.beatBytes, params))
- uart.node := pbus.toVariableWidthSlaves
+ val uarts = uartParams.zipWithIndex.map { case(params, i) =>
+ val name = Some(s"uart_$i")
+ val uart = LazyModule(new TLUART(pbus.beatBytes, params)).suggestName(name)
+ pbus.toVariableWidthSlave(name) { uart.node }
ibus.fromSync := uart.intnode
uart
}
}
-trait HasPeripheryUARTModuleImp extends LazyMultiIOModuleImp with HasPeripheryUARTBundle {
+trait HasPeripheryUARTModuleImp extends LazyModuleImp with HasPeripheryUARTBundle {
val outer: HasPeripheryUART
val uart = IO(Vec(outer.uartParams.size, new UARTPortIO))
io <> device.module.io.port
}
}
-
-class UARTPins[T <: Pin] (pingen: () => T) extends Bundle {
- val rxd = pingen()
- val txd = pingen()
-
- override def cloneType: this.type =
- this.getClass.getConstructors.head.newInstance(pingen).asInstanceOf[this.type]
-
- def fromPort(uart: UARTPortIO, clock: Clock, reset: Bool, syncStages: Int = 0) {
- withClockAndReset(clock, reset) {
- txd.outputPin(uart.txd)
- val rxd_t = rxd.inputPin()
- uart.rxd := SynchronizerShiftRegInit(rxd_t, n = syncStages, init = Bool(true), name = Some("uart_rxd_sync"))
- }
- }
-}
-