From 082b2304520a48c78f2a0dd1f8a98857c53df140 Mon Sep 17 00:00:00 2001 From: abejgonzalez Date: Sun, 8 Nov 2020 17:51:21 -0800 Subject: [PATCH] Add missing file --- .../main/scala/vcu118/CustomOverlays.scala | 110 ++++++++++++++++++ 1 file changed, 110 insertions(+) create mode 100644 fpga/src/main/scala/vcu118/CustomOverlays.scala diff --git a/fpga/src/main/scala/vcu118/CustomOverlays.scala b/fpga/src/main/scala/vcu118/CustomOverlays.scala new file mode 100644 index 00000000..a58fb424 --- /dev/null +++ b/fpga/src/main/scala/vcu118/CustomOverlays.scala @@ -0,0 +1,110 @@ +package chipyard.fpga.vcu118 + +import chisel3._ + +import freechips.rocketchip.diplomacy._ +import freechips.rocketchip.config.{Parameters, Field} +import freechips.rocketchip.tilelink.{TLInwardNode, TLAsyncCrossingSink} + +import sifive.fpgashells.shell._ +import sifive.fpgashells.ip.xilinx._ +import sifive.fpgashells.shell.xilinx._ +import sifive.fpgashells.clocks._ +import sifive.fpgashells.devices.xilinx.xilinxvcu118mig.{XilinxVCU118MIGPads, XilinxVCU118MIGParams, XilinxVCU118MIG} + +class SysClock2VCU118PlacedOverlay(val shell: VCU118ShellBasicOverlays, name: String, val designInput: ClockInputDesignInput, val shellInput: ClockInputShellInput) + extends LVDSClockInputXilinxPlacedOverlay(name, designInput, shellInput) +{ + val node = shell { ClockSourceNode(freqMHz = 250, jitterPS = 50)(ValName(name)) } + + shell { InModuleBody { + shell.xdc.addPackagePin(io.p, "AW26") + shell.xdc.addPackagePin(io.n, "AW27") + shell.xdc.addIOStandard(io.p, "DIFF_SSTL12") + shell.xdc.addIOStandard(io.n, "DIFF_SSTL12") + } } +} +class SysClock2VCU118ShellPlacer(shell: VCU118ShellBasicOverlays, val shellInput: ClockInputShellInput)(implicit val valName: ValName) + extends ClockInputShellPlacer[VCU118ShellBasicOverlays] +{ + def place(designInput: ClockInputDesignInput) = new SysClock2VCU118PlacedOverlay(shell, valName.name, designInput, shellInput) +} + +case object VCU118DDR2Size extends Field[BigInt](0x40000000L * 2) // 2GB +class DDR2VCU118PlacedOverlay(val shell: VCU118FPGATestHarness, name: String, val designInput: DDRDesignInput, val shellInput: DDRShellInput) + extends DDRPlacedOverlay[XilinxVCU118MIGPads](name, designInput, shellInput) +{ + val size = p(VCU118DDRSize) + + val migParams = XilinxVCU118MIGParams(address = AddressSet.misaligned(di.baseAddress, size)) + val mig = LazyModule(new XilinxVCU118MIG(migParams)) + val ioNode = BundleBridgeSource(() => mig.module.io.cloneType) + val topIONode = shell { ioNode.makeSink() } + val ddrUI = shell { ClockSourceNode(freqMHz = 200) } + val areset = shell { ClockSinkNode(Seq(ClockSinkParameters())) } + areset := designInput.wrangler := ddrUI + + // since this uses a separate clk/rst need to put an async crossing + val asyncSink = LazyModule(new TLAsyncCrossingSink()) + val migClkRstNode = BundleBridgeSource(() => new Bundle { + val clock = Output(Clock()) + val reset = Output(Bool()) + }) + val topMigClkRstIONode = shell { migClkRstNode.makeSink() } + + def overlayOutput = DDROverlayOutput(ddr = mig.node) + def ioFactory = new XilinxVCU118MIGPads(size) + + InModuleBody { + ioNode.bundle <> mig.module.io + + // setup async crossing + asyncSink.module.clock := migClkRstNode.bundle.clock + asyncSink.module.reset := migClkRstNode.bundle.reset + } + + shell { InModuleBody { + require (shell.sys_clock2.get.isDefined, "Use of DDRVCU118Overlay depends on SysClock2VCU118Overlay") + val (sys, _) = shell.sys_clock2.get.get.overlayOutput.node.out(0) + val (ui, _) = ddrUI.out(0) + val (ar, _) = areset.in(0) + + // connect the async fifo sync to sys_clock2 + topMigClkRstIONode.bundle.clock := sys.clock + topMigClkRstIONode.bundle.reset := sys.reset + + val port = topIONode.bundle.port + io <> port + ui.clock := port.c0_ddr4_ui_clk + ui.reset := /*!port.mmcm_locked ||*/ port.c0_ddr4_ui_clk_sync_rst + port.c0_sys_clk_i := sys.clock.asUInt + port.sys_rst := sys.reset // pllReset + port.c0_ddr4_aresetn := !ar.reset + + // This was just copied from the SiFive example, but it's hard to follow. + // The pins are emitted in the following order: + // adr[0->13], we_n, cas_n, ras_n, bg, ba[0->1], reset_n, act_n, ck_c, ck_t, cke, cs_n, odt, dq[0->63], dqs_c[0->7], dqs_t[0->7], dm_dbi_n[0->7] + val allddrpins = Seq( + "AM27", "AL27", "AP26", "AP25", "AN28", "AM28", "AP28", "AP27", "AN26", "AM26", "AR28", "AR27", "AV25", "AT25", // adr[0->13] + "AV28", "AU26", "AV26", "AU27", // we_n, cas_n, ras_n, bg + "AR25", "AU28", // ba[0->1] + "BD35", "AN25", "AT27", "AT26", "AW28", "AY29", "BB29", // reset_n, act_n, ck_c, ck_t, cke, cs_n, odt + "BD30", "BE30", "BD32", "BE33", "BC33", "BD33", "BC31", "BD31", "BA32", "BB33", "BA30", "BA31", "AW31", "AW32", "AY32", "AY33", // dq[0->15] + "AV30", "AW30", "AU33", "AU34", "AT31", "AU32", "AU31", "AV31", "AR33", "AT34", "AT29", "AT30", "AP30", "AR30", "AN30", "AN31", // dq[16->31] + "BE34", "BF34", "BC35", "BC36", "BD36", "BE37", "BF36", "BF37", "BD37", "BE38", "BC39", "BD40", "BB38", "BB39", "BC38", "BD38", // dq[32->47] + "BB36", "BB37", "BA39", "BA40", "AW40", "AY40", "AY38", "AY39", "AW35", "AW36", "AU40", "AV40", "AU38", "AU39", "AV38", "AV39", // dq[48->63] + "BF31", "BA34", "AV29", "AP32", "BF35", "BF39", "BA36", "AW38", // dqs_c[0->7] + "BF30", "AY34", "AU29", "AP31", "BE35", "BE39", "BA35", "AW37", // dqs_t[0->7] + "BE32", "BB31", "AV33", "AR32", "BC34", "BE40", "AY37", "AV35") // dm_dbi_n[0->7] + + (IOPin.of(io) zip allddrpins) foreach { case (io, pin) => shell.xdc.addPackagePin(io, pin) } + } } + + shell.sdc.addGroup(pins = Seq(mig.island.module.blackbox.io.c0_ddr4_ui_clk)) +} + +class DDR2VCU118ShellPlacer(shell: VCU118FPGATestHarness, val shellInput: DDRShellInput)(implicit val valName: ValName) + extends DDRShellPlacer[VCU118FPGATestHarness] { + def place(designInput: DDRDesignInput) = new DDR2VCU118PlacedOverlay(shell, valName.name, designInput, shellInput) +} +