加挂gpio编译

src/main/scala/backBoard/pico/BackSystem.scala

@@ -57,7 +57,7 @@ class BackSys()(implicit p: Parameters) extends LazyModule with HasBackParameter
     managers = Seq(TLSlaveParameters.v1(
       address = Seq(AddressSet(0x40000000L, 0xffL)),
       regionType = RegionType.UNCACHED,
-      executable = true,
+      executable = false,
       supportsGet         = TransferSizes(32/8, 32/8),
       supportsPutFull     = TransferSizes(32/8, 32/8),
       supportsPutPartial  = TransferSizes(32/8, 32/8)
@@ -81,16 +81,22 @@ class BackSys()(implicit p: Parameters) extends LazyModule with HasBackParameter
   //     initBaudRate = BigInt(115200),
   //   ), divinit = 0) )
 
-  // val gpio = LazyModule(new TLGPIO(busWidthBytes = 4, params = GPIOParams(
-  //     address = BigInt(0x60000000L),
-  //     width = 16,
-  //   )))
+  val gpioNode = TLManagerNode(Seq(TLSlavePortParameters.v1(
+    managers = Seq(TLSlaveParameters.v1(
+      address = Seq(AddressSet(0x60000000L, 0xffL)),
+      regionType = RegionType.UNCACHED,
+      executable = false,
+      supportsGet         = TransferSizes(32/8, 32/8),
+      supportsPutFull     = TransferSizes(32/8, 32/8),
+      supportsPutPartial  = TransferSizes(32/8, 32/8)
+    )),
+    beatBytes = 32/8)))
 
   val xbar = TLXbar()
   xbar := coreClientNode
   cdrNode := xbar
   sram.node := xbar
-
+  gpioNode := xbar
 
 
 
@@ -105,10 +111,18 @@ class BackSysImp(outer: BackSys) extends LazyModuleImp(outer) with HasBackParame
     val uDatOut  = Output(Bool())
     val dDatIn   = Input(Bool())
     val dDatOut  = Output(Bool())
+
+    val out = Output(UInt(32.W))
+    val in  = Input(UInt(32.W))
+
+    val isOnline = Output(Bool())
+    val isLast   = Input(Bool())
+    val DCIn   = Input(Bool())
   }
   
   val ( core_bus, core_edge ) = outer.coreClientNode.out.head
   val ( cdr_bus, cdr_edge ) = outer.cdrNode.in.head
+  val ( gpio_bus, gpio_edge ) = outer.gpioNode.in.head
 
 
   val io: BackSysIO = IO(new BackSysIO)
@@ -116,11 +130,18 @@ class BackSysImp(outer: BackSys) extends LazyModuleImp(outer) with HasBackParame
   val pico = Module(new Picorv32_tl(edge = core_edge))
   val cdr = for( i <- 0 until 2 ) yield { Module(new TLCDR(cdr_edge)) }
 
+  val gpio = Module(new SimpleGpio(gpio_edge))
+
+
     // val trap = Output(Bool())
-  pico.io.irq := Cat( cdr(1).io.interrupt.asUInt, cdr(0).io.interrupt.asUInt )
+  pico.io.irq := Cat( io.DCIn, cdr(1).io.interrupt.asUInt, cdr(0).io.interrupt.asUInt )
     // val eoi = Output(UInt(32.W))
 
+  io.out := gpio.io.out
+  gpio.io.in := io.in
 
+  io.isOnline := gpio.io.isOnline
+  gpio.io.isLast  := io.isLast 
 
 
 
@@ -133,6 +154,15 @@ class BackSysImp(outer: BackSys) extends LazyModuleImp(outer) with HasBackParame
   cdr(1).io.datIn := io.dDatIn
   io.dDatOut := cdr(1).io.datOut
 
+  io.out := gpio.io.out
+
+
+
+
+
+
+
+
 
   pico.io.tld.bits  := core_bus.d.bits
   pico.io.tld.valid := core_bus.d.valid
@@ -165,4 +195,13 @@ class BackSysImp(outer: BackSys) extends LazyModuleImp(outer) with HasBackParame
 
 
 
+  gpio.io.tla.valid := gpio_bus.a.valid
+  gpio.io.tla.bits  := gpio_bus.a.bits 
+  gpio_bus.a.ready  := gpio.io.tla.ready
+
+  gpio_bus.d.valid  := gpio.io.tld.valid
+  gpio_bus.d.bits   := gpio.io.tld.bits
+  gpio.io.tld.ready := gpio_bus.d.ready
+
+
 }

src/main/scala/backBoard/pico/SimpleGpio.scala

@@ -0,0 +1,59 @@
+package BACK
+
+import chisel3._
+import chisel3.util._
+
+import org.chipsalliance.cde.config._
+import freechips.rocketchip.diplomacy._
+import freechips.rocketchip.tilelink._
+
+
+class SimpleGpio(val edge: TLEdgeIn)(implicit p: Parameters) extends BackModule{
+  class SimpleGpioIO extends Bundle{
+    val tla = Flipped(new DecoupledIO(new TLBundleA(edge.bundle)))
+    val tld = new DecoupledIO(new TLBundleD(edge.bundle))
+
+    val out = Output(UInt(32.W))
+    val in  = Input(UInt(32.W))
+
+
+    val isOnline = Output(Bool())
+    val isLast   = Input(Bool())
+
+  }
+
+  val io: SimpleGpioIO = IO(new SimpleGpioIO)
+
+  val isWriteGpio  = io.tla.fire & io.tla.bits.address(6,0) === "h0".U & ( (io.tla.bits.opcode === 0.U) || (io.tla.bits.opcode === 1.U) )
+  val isReadGpio   = io.tla.fire & io.tla.bits.address(3,0) === "h0".U & ( io.tla.bits.opcode === 4.U )
+  // val isWriteDir   = io.tla.fire & io.tla.bits.address(6,0) === "h4".U & ( (io.tla.bits.opcode === 0.U) || (io.tla.bits.opcode === 1.U) )
+  val isReadIsLast = io.tla.fire & io.tla.bits.address(3,0) === "h8".U & ( io.tla.bits.opcode === 4.U )
+
+
+  io.isOnline := false.B
+
+  val tldValid = RegInit(false.B)
+  val tlaInfo = Reg(new TLBundleA(edge.bundle))
+  val isRead = Reg(Bool())
+
+  io.out := RegEnable( io.tla.bits.data, 0.U(32.W), isWriteGpio )
+
+  when( io.tld.fire ){
+    tldValid := false.B
+  } .elsewhen( io.tla.fire ){
+    tldValid := true.B
+    tlaInfo := io.tla.bits
+    isRead := io.tla.bits.opcode === 4.U
+  }
+
+  io.tla.ready := true.B
+  io.tld.valid := tldValid
+
+  when(isRead) {
+    io.tld.bits := edge.AccessAck(tlaInfo, 
+      Mux( tlaInfo.address(3,0) === "h0".U, io.in, Mux( tlaInfo.address(3,0) === "h8".U, io.isLast, 0.U ) )
+    )
+  } .otherwise {
+    io.tld.bits := edge.AccessAck(tlaInfo)
+  }
+}