Add vexiiriscv CPU support

.github/scripts/check-commit.sh

@@ -46,7 +46,7 @@ search () {
 }
 
 
-submodules=("cva6" "boom" "ibex" "gemmini" "icenet" "nvdla" "rocket-chip" "rocket-chip-blocks" "rocket-chip-inclusive-cache" "testchipip" "riscv-sodor" "mempress" "bar-fetchers" "shuttle" "constellation" "fft-generator" "hardfloat" "caliptra-aes-acc" "rocc-acc-utils" "diplomacy" "rerocc" "compress-acc" "saturn" "ara")
+submodules=("cva6" "boom" "ibex" "gemmini" "icenet" "nvdla" "rocket-chip" "rocket-chip-blocks" "rocket-chip-inclusive-cache" "testchipip" "riscv-sodor" "mempress" "bar-fetchers" "shuttle" "constellation" "fft-generator" "hardfloat" "caliptra-aes-acc" "rocc-acc-utils" "diplomacy" "rerocc" "compress-acc" "saturn" "ara" "vexiiriscv")
 dir="generators"
 branches=("master" "main" "dev")
 search

.github/scripts/defaults.sh

@@ -25,7 +25,7 @@ REMOTE_COURSIER_CACHE=$REMOTE_WORK_DIR/.coursier-cache
 
 # key value store to get the build groups
 declare -A grouping
-grouping["group-cores"]="chipyard-cva6 chipyard-ibex chipyard-rocket chipyard-hetero chipyard-boomv3 chipyard-boomv4 chipyard-sodor chipyard-digitaltop chipyard-multiclock-rocket chipyard-nomem-scratchpad chipyard-spike chipyard-clone chipyard-prefetchers chipyard-shuttle"
+grouping["group-cores"]="chipyard-cva6 chipyard-ibex chipyard-rocket chipyard-hetero chipyard-boomv3 chipyard-boomv4 chipyard-sodor chipyard-digitaltop chipyard-multiclock-rocket chipyard-nomem-scratchpad chipyard-spike chipyard-clone chipyard-prefetchers chipyard-shuttle chipyard-vexiiriscv"
 grouping["group-peripherals"]="chipyard-dmirocket chipyard-dmiboomv3 chipyard-dmiboomv4 chipyard-spiflashwrite chipyard-mmios chipyard-nocores chipyard-manyperipherals chipyard-chiplike chipyard-tethered chipyard-symmetric chipyard-llcchiplet"
 grouping["group-accels"]="chipyard-compressacc chipyard-mempress chipyard-gemmini chipyard-manymmioaccels chipyard-nvdla chipyard-aes256ecb chipyard-rerocc chipyard-rocketvector chipyard-shuttlevector chipyard-shuttleara"
 grouping["group-constellation"]="chipyard-constellation"
@@ -54,6 +54,7 @@ mapping["chipyard-spike"]=" CONFIG=SpikeZicntrConfig EXTRA_SIM_FLAGS='+spike-ipc
 mapping["chipyard-gemmini"]=" CONFIG=GemminiRocketConfig"
 mapping["chipyard-cva6"]=" CONFIG=CVA6Config"
 mapping["chipyard-ibex"]=" CONFIG=IbexConfig"
+mapping["chipyard-vexiiriscv"]=" CONFIG=VexiiRiscvConfig"
 mapping["chipyard-spiflashwrite"]=" CONFIG=SmallSPIFlashRocketConfig EXTRA_SIM_FLAGS='+spiflash0=${LOCAL_CHIPYARD_DIR}/tests/spiflash.img'"
 mapping["chipyard-manyperipherals"]=" CONFIG=ManyPeripheralsRocketConfig EXTRA_SIM_FLAGS='+spiflash0=${LOCAL_CHIPYARD_DIR}/tests/spiflash.img'"
 mapping["chipyard-chiplike"]=" CONFIG=ChipLikeRocketConfig MODEL=FlatTestHarness MODEL_PACKAGE=chipyard.example verilog"

.github/scripts/run-tests.sh

@@ -160,6 +160,10 @@ case $1 in
         # Ibex cannot run the riscv-tests binaries for some reason
         # run_binary BINARY=$RISCV/riscv64-unknown-elf/share/riscv-tests/isa/rv32ui-p-simple
         ;;
+    chipyard-vexiiriscv)
+        run_asm LOADMEM=1
+        run_bmark LOADMEM=1
+        ;;
     chipyard-sodor)
         run_asm
         ;;

.github/workflows/chipyard-run-tests.yml

@@ -558,6 +558,29 @@ jobs:
           group-key: "group-cores"
           project-key: "chipyard-ibex"
 
+  chipyard-vexiiriscv-run-tests:
+    name: chipyard-vexiiriscv-run-tests
+    needs: prepare-chipyard-cores
+    runs-on: as4
+    steps:
+      - name: Delete old checkout
+        run: |
+            ls -alh .
+            rm -rf ${{ github.workspace }}/* || true
+            rm -rf ${{ github.workspace }}/.* || true
+            ls -alh .
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Git workaround
+        uses: ./.github/actions/git-workaround
+      - name: Create conda env
+        uses: ./.github/actions/create-conda-env
+      - name: Run tests
+        uses: ./.github/actions/run-tests
+        with:
+          group-key: "group-cores"
+          project-key: "chipyard-vexiiriscv"
+
   chipyard-sodor-run-tests:
     name: chipyard-sodor-run-tests
     needs: prepare-chipyard-cores
@@ -1188,6 +1211,7 @@ jobs:
             chipyard-shuttle-run-tests,
             chipyard-cva6-run-tests,
             chipyard-ibex-run-tests,
+            chipyard-vexiiriscv-run-tests,
             chipyard-sodor-run-tests,
             chipyard-dmiboomv3-run-tests,
             chipyard-dmiboomv4-run-tests,

.gitmodules

@@ -151,3 +151,6 @@
 [submodule "tools/firrtl2"]
 	path = tools/firrtl2
 	url = https://github.com/ucb-bar/firrtl2.git
+[submodule "generators/vexiiriscv"]
+	path = generators/vexiiriscv
+	url = https://github.com/ucb-bar/vexiiriscv-tile.git

build.sbt

@@ -158,7 +158,7 @@ lazy val chipyard = (project in file("generators/chipyard"))
     dsptools, rocket_dsp_utils,
     gemmini, icenet, tracegen, cva6, nvdla, sodor, ibex, fft_generator,
     constellation, mempress, barf, shuttle, caliptra_aes, rerocc,
-    compressacc, saturn, ara, firrtl2_bridge)
+    compressacc, saturn, ara, firrtl2_bridge, vexiiriscv)
   .settings(libraryDependencies ++= rocketLibDeps.value)
   .settings(
     libraryDependencies ++= Seq(
@@ -233,6 +233,11 @@ lazy val ibex = (project in file("generators/ibex"))
   .settings(libraryDependencies ++= rocketLibDeps.value)
   .settings(commonSettings)
 
+lazy val vexiiriscv = (project in file("generators/vexiiriscv"))
+  .dependsOn(rocketchip)
+  .settings(libraryDependencies ++= rocketLibDeps.value)
+  .settings(commonSettings)
+
 lazy val sodor = (project in file("generators/riscv-sodor"))
   .dependsOn(rocketchip)
   .settings(libraryDependencies ++= rocketLibDeps.value)

docs/Chipyard-Basics/Chipyard-Components.rst

@@ -20,6 +20,10 @@ Processor Cores
   An out-of-order RISC-V core.
   See :ref:`Generators/BOOM:Berkeley Out-of-Order Machine (BOOM)` for more information.
 
+**Shuttle Core**
+  A superscalar in-order RISC-V core.
+  See :ref:`Generators/Shuttle:Shuttle RISC-V Core` for more information
+
 **CVA6 Core**
   An in-order RISC-V core written in System Verilog. Previously called Ariane.
   See :ref:`Generators/CVA6:CVA6 Core` for more information.
@@ -28,6 +32,11 @@ Processor Cores
   An in-order 32 bit RISC-V core written in System Verilog.
   See :ref:`Generators/Ibex:Ibex Core` for more information.
 
+**VexiiRiscv Core**
+  A dual-issue in-order 64 bit RISC-V core implemented in SpinalHDL
+  See :ref:`Generators/VexiiRiscv:VexiiRiscv Core` for more information.
+
+
 Accelerators
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 

docs/Generators/Shuttle.rst

@@ -6,3 +6,5 @@ Shuttle is a Rocket-based superscalar in-order RISC-V core, supporting the base
 The superscalar microarchitecture presents the most advantages for 1) floating-point kernels and 2) RoCC accelerator kernels, as scalar control code can execute concurrently with floating point or RoCC instructions, maintaining high utilization of those units.
 
 Shuttle is tape-out proven, and has similar physical design complexity as Rocket.
+
+``ShuttleConfig`` provides a base configuration of a single-core Shuttle-based SoC.

docs/Generators/VexiiRiscv.rst

@@ -0,0 +1,9 @@
+VexiiRiscv Core
+===================================
+`VexiiRiscv <https://github.com/SpinalHDL/VexiiRiscv>`__ is a RV64IMAFDCB in-order superscalar core implemented in `SpinalHDL <https://spinalhdl.github.io/SpinalDoc-RTD/master/index.html#>`__.
+VexiiRiscv is Linux-capable and achieves competitive IPC in its design class.
+VexiiRiscv implements cache-coherent TileLink L1 data caches and is integrated as a selectable Tile in Chipyard.
+
+The example VexiiRiscv config is ``VexiiRiscvConfig``.
+When building this Config, Chipyard will call VexiiRiscv's SpinalHDL RTL generator to generate the core's SystemVerilog, before integrating it as a Chisel blackbox.
+

docs/Generators/index.rst

@@ -29,6 +29,7 @@ so changes to the generators themselves will automatically be used when building
    Rocket-Chip-Generators
    CVA6
    Ibex
+   VexiiRiscv
    fft
    NVDLA
    Sodor

generators/chipyard/src/main/scala/config/VexiiRiscvConfigs.scala

@@ -0,0 +1,13 @@
+package chipyard
+
+import chisel3._
+
+import org.chipsalliance.cde.config.{Config}
+
+// ---------------------
+// VexiiRiscv Configs
+// ---------------------
+
+class VexiiRiscvConfig extends Config(
+  new vexiiriscv.WithNVexiiRiscvCores(1) ++
+  new chipyard.config.AbstractConfig)

generators/chipyard/src/main/scala/config/fragments/TileFragments.scala

@@ -10,6 +10,7 @@ import freechips.rocketchip.rocket.{RocketCoreParams, MulDivParams, DCacheParams
 import cva6.{CVA6TileAttachParams}
 import sodor.common.{SodorTileAttachParams}
 import ibex.{IbexTileAttachParams}
+import vexiiriscv.{VexiiRiscvTileAttachParams}
 import testchipip.cosim.{TracePortKey, TracePortParams}
 import barf.{TilePrefetchingMasterPortParams}
 
@@ -106,6 +107,8 @@ class WithTilePrefetchers extends Config((site, here, up) => {
       master = TilePrefetchingMasterPortParams(tp.tileParams.tileId, tp.crossingParams.master)))
     case tp: IbexTileAttachParams => tp.copy(crossingParams = tp.crossingParams.copy(
       master = TilePrefetchingMasterPortParams(tp.tileParams.tileId, tp.crossingParams.master)))
+    case tp: VexiiRiscvTileAttachParams => tp.copy(crossingParams = tp.crossingParams.copy(
+      master = TilePrefetchingMasterPortParams(tp.tileParams.tileId, tp.crossingParams.master)))
     case tp: CVA6TileAttachParams => tp.copy(crossingParams = tp.crossingParams.copy(
       master = TilePrefetchingMasterPortParams(tp.tileParams.tileId, tp.crossingParams.master)))
   }

scripts/init-submodules-no-riscv-tools-nolog.sh

@@ -76,6 +76,7 @@ cd "$RDIR"
             generators/gemmini \
             generators/rocket-chip \
             generators/compress-acc \
+            generators/vexiiriscv \
             sims/firesim \
             software/nvdla-workload \
             software/coremark \
@@ -130,6 +131,12 @@ cd "$RDIR"
     # Non-recursive clone
     git submodule update --init generators/compress-acc
 
+    # Non-recursive clone
+    git submodule update --init generators/vexiiriscv
+    git -C generators/vexiiriscv submodule update --init VexiiRiscv
+    git -C generators/vexiiriscv/VexiiRiscv submodule update --init ext/SpinalHDL
+    git -C generators/vexiiriscv/VexiiRiscv submodule update --init ext/rvls
+
     # Minimal non-recursive clone to initialize sbt dependencies
     git submodule update --init sims/firesim
     git config --local submodule.sims/firesim.update none