Ibex integration

.circleci/check-commit.sh

@@ -48,13 +48,13 @@ search () {
     done
 }
 
-submodules=("cva6" "boom" "gemmini" "hwacha" "icenet" "nvdla" "rocket-chip" "sha3" "sifive-blocks" "sifive-cache" "testchipip" "riscv-sodor")
+submodules=("cva6" "boom" "ibex" "gemmini" "hwacha" "icenet" "nvdla" "rocket-chip" "sha3" "sifive-blocks" "sifive-cache" "testchipip" "riscv-sodor")
 dir="generators"
 if [ "$CIRCLE_BRANCH" == "master" ] || [ "$CIRCLE_BRANCH" == "dev" ]
 then
-    branches=("master")
+    branches=("master" "main")
 else
-    branches=("master" "dev")
+    branches=("master" "main" "dev")
 fi
 search
 

.circleci/config.yml

@@ -252,6 +252,13 @@ jobs:
                 group-key: "group-cores"
                 project-key: "chipyard-sodor"
                 timeout: "30m"
+    chipyard-ibex-run-tests:
+        executor: main-env
+        steps:
+            - run-tests:
+                group-key: "group-cores"
+                project-key: "chipyard-ibex"
+                timeout: "30m"
     chipyard-multiclock-rocket-run-tests:
         executor: main-env
         steps:
@@ -309,7 +316,7 @@ jobs:
                 tools-version: "esp-tools"
                 group-key: "group-accels"
                 project-key: "chipyard-hwacha"
-                timeout: "30m"
+                timeout: "60m"
     chipyard-gemmini-run-tests:
         executor: main-env
         steps:
@@ -455,6 +462,9 @@ workflows:
             - chipyard-sodor-run-tests:
                 requires:
                     - prepare-chipyard-cores
+            - chipyard-ibex-run-tests:
+                requires:
+                    - prepare-chipyard-cores
             - chipyard-dmirocket-run-tests:
                 requires:
                     - prepare-chipyard-peripherals

.circleci/defaults.sh

@@ -49,7 +49,7 @@ LOCAL_FIRESIM_DIR=$LOCAL_CHIPYARD_DIR/sims/firesim/sim
 
 # key value store to get the build groups
 declare -A grouping
-grouping["group-cores"]="chipyard-cva6 chipyard-rocket chipyard-hetero chipyard-boom chipyard-sodor chipyard-digitaltop chipyard-multiclock-rocket"
+grouping["group-cores"]="chipyard-cva6 chipyard-ibex chipyard-rocket chipyard-hetero chipyard-boom chipyard-sodor chipyard-digitaltop chipyard-multiclock-rocket"
 grouping["group-peripherals"]="chipyard-dmirocket chipyard-blkdev chipyard-spiflashread chipyard-spiflashwrite chipyard-mmios chipyard-lbwif"
 grouping["group-accels"]="chipyard-nvdla chipyard-sha3 chipyard-hwacha chipyard-gemmini chipyard-streaming-fir chipyard-streaming-passthrough"
 grouping["group-tracegen"]="tracegen tracegen-boom"
@@ -71,6 +71,7 @@ mapping["chipyard-blkdev"]=" CONFIG=SimBlockDeviceRocketConfig"
 mapping["chipyard-hwacha"]=" CONFIG=HwachaRocketConfig"
 mapping["chipyard-gemmini"]=" CONFIG=GemminiRocketConfig"
 mapping["chipyard-cva6"]=" CONFIG=CVA6Config"
+mapping["chipyard-ibex"]=" CONFIG=IbexConfig"
 mapping["chipyard-spiflashread"]=" CONFIG=LargeSPIFlashROMRocketConfig"
 mapping["chipyard-spiflashwrite"]=" CONFIG=SmallSPIFlashRocketConfig"
 mapping["chipyard-mmios"]=" CONFIG=MMIORocketConfig verilog"

.circleci/run-tests.sh

@@ -100,6 +100,9 @@ case $1 in
     chipyard-sodor)
         run_asm ${mapping[$1]}
         ;;
+    chipyard-ibex)
+        run_bmark ${mapping[$1]} #TODO: Find 32-bit test
+        ;;
     chipyard-nvdla)
         make -C $LOCAL_CHIPYARD_DIR/tests
         make -C $LOCAL_SIM_DIR ${mapping[$1]} BINARY=$LOCAL_CHIPYARD_DIR/tests/nvdla.riscv run-binary

.github/scripts/check-commit.sh

@@ -47,13 +47,13 @@ search () {
     done
 }
 
-submodules=("cva6" "boom" "gemmini" "hwacha" "icenet" "nvdla" "rocket-chip" "sha3" "sifive-blocks" "sifive-cache" "testchipip" "riscv-sodor")
+submodules=("cva6" "ibex" "boom" "gemmini" "hwacha" "icenet" "nvdla" "rocket-chip" "sha3" "sifive-blocks" "sifive-cache" "testchipip" "riscv-sodor")
 dir="generators"
 if [ "$CIRCLE_BRANCH" == "master" ] || [ "$CIRCLE_BRANCH" == "dev" ]
 then
-    branches=("master")
+    branches=("master" "main")
 else
-    branches=("master" "dev")
+    branches=("master" "main" "dev")
 fi
 search
 

.github/scripts/defaults.sh

@@ -37,7 +37,7 @@ LOCAL_FIRESIM_DIR=$LOCAL_CHIPYARD_DIR/sims/firesim/sim
 
 # key value store to get the build groups
 declare -A grouping
-grouping["group-cores"]="chipyard-cva6 chipyard-rocket chipyard-hetero chipyard-boom chipyard-sodor chipyard-digitaltop chipyard-multiclock-rocket"
+grouping["group-cores"]="chipyard-cva6 chipyard-ibex chipyard-rocket chipyard-hetero chipyard-boom chipyard-sodor chipyard-digitaltop chipyard-multiclock-rocket"
 grouping["group-peripherals"]="chipyard-dmirocket chipyard-blkdev chipyard-spiflashread chipyard-spiflashwrite chipyard-mmios chipyard-lbwif"
 grouping["group-accels"]="chipyard-nvdla chipyard-sha3 chipyard-hwacha chipyard-gemmini chipyard-streaming-fir chipyard-streaming-passthrough"
 grouping["group-tracegen"]="tracegen tracegen-boom"
@@ -59,6 +59,7 @@ mapping["chipyard-blkdev"]=" CONFIG=SimBlockDeviceRocketConfig"
 mapping["chipyard-hwacha"]=" CONFIG=HwachaRocketConfig"
 mapping["chipyard-gemmini"]=" CONFIG=GemminiRocketConfig"
 mapping["chipyard-cva6"]=" CONFIG=CVA6Config"
+mapping["chipyard-ibex"]=" CONFIG=IbexConfig"
 mapping["chipyard-spiflashread"]=" CONFIG=LargeSPIFlashROMRocketConfig"
 mapping["chipyard-spiflashwrite"]=" CONFIG=SmallSPIFlashRocketConfig"
 mapping["chipyard-mmios"]=" CONFIG=MMIORocketConfig verilog"

.github/scripts/run-tests.sh

@@ -101,6 +101,9 @@ case $1 in
     chipyard-cva6)
         make run-binary-fast -C $LOCAL_SIM_DIR $DISABLE_SIM_PREREQ ${mapping[$1]} BINARY=$RISCV/riscv64-unknown-elf/share/riscv-tests/benchmarks/multiply.riscv
         ;;
+    chipyard-ibex)
+        run_bmark ${mapping[$1]} #TODO: Find 32-bit test
+        ;;
     chipyard-sodor)
         run_asm ${mapping[$1]}
         ;;

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

@@ -329,6 +329,26 @@ jobs:
           project-key: "chipyard-cva6"
       - uses: ./.github/actions/job-end
 
+  chipyard-ibex-run-tests:
+    name: chipyard-ibex-run-tests
+    needs: prepare-chipyard-cores
+    runs-on: ubuntu-latest
+    container:
+      image: ucbbar/chipyard-ci-image:554b436
+      options: --entrypoint /bin/bash
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - uses: ./.github/actions/job-start
+        id: job-start
+      - name: Run tests
+        if: steps.job-start.outputs.run_result != 'success'
+        uses: ./.github/actions/run-tests
+        with:
+          group-key: "group-cores"
+          project-key: "chipyard-ibex"
+      - uses: ./.github/actions/job-end
+
   chipyard-sodor-run-tests:
     name: chipyard-sodor-run-tests
     needs: prepare-chipyard-cores
@@ -690,7 +710,7 @@ jobs:
   all_tests_passed:
     name: "all tests passed"
     needs: [commit-on-master-check, tutorial-setup-check, documentation-check,
-            chipyard-rocket-run-tests, chipyard-hetero-run-tests, chipyard-boom-run-tests, chipyard-cva6-run-tests,
+            chipyard-rocket-run-tests, chipyard-hetero-run-tests, chipyard-boom-run-tests, chipyard-cva6-run-tests, chipyard-ibex-run-tests,
             chipyard-sodor-run-tests, chipyard-dmirocket-run-tests, chipyard-spiflashwrite-run-tests,
             chipyard-spiflashread-run-tests, chipyard-lbwif-run-tests, chipyard-sha3-run-tests,
             chipyard-streaming-fir-run-tests, chipyard-streaming-passthrough-run-tests, chipyard-hwacha-run-tests,

.gitmodules

@@ -140,3 +140,6 @@
 [submodule "tools/rocket-dsp-utils"]
 	path = tools/rocket-dsp-utils
 	url = https://github.com/ucb-bar/rocket-dsp-utils
+[submodule "generators/ibex"]
+	path = generators/ibex
+	url = https://github.com/ucb-bar/ibex-wrapper

build.sbt

@@ -186,7 +186,7 @@ lazy val chipyard = (project in file("generators/chipyard"))
   .dependsOn(rocketchip, boom, hwacha, sifive_blocks, sifive_cache, iocell,
     sha3, // On separate line to allow for cleaner tutorial-setup patches
     dsptools, `rocket-dsp-utils`,
-    gemmini, icenet, tracegen, cva6, nvdla, sodor)
+    gemmini, icenet, tracegen, cva6, nvdla, sodor, ibex)
   .settings(libraryDependencies ++= rocketLibDeps.value)
   .settings(commonSettings)
 
@@ -218,6 +218,11 @@ lazy val cva6 = (project in file("generators/cva6"))
   .settings(libraryDependencies ++= rocketLibDeps.value)
   .settings(commonSettings)
 
+lazy val ibex = (project in file("generators/ibex"))
+  .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

@@ -24,6 +24,10 @@ Processor Cores
   An in-order RISC-V core written in System Verilog. Previously called Ariane.
   See :ref:`Generators/CVA6:CVA6 Core` for more information.
 
+**Ibex Core**
+  An in-order 32 bit RISC-V core written in System Verilog.
+  See :ref:`Generators/Ibex:Ibex Core` for more information.
+
 Accelerators
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 

docs/Generators/Ibex.rst

@@ -0,0 +1,14 @@
+Ibex Core
+====================================
+
+`Ibex <https://github.com/lowRISC/ibex>`__ is a parameterizable RV32IMC embedded core written in SystemVerilog, currently maintained by `lowRISC <https://lowrisc.org>`__.
+The `Ibex core` is wrapped in an `Ibex tile` so it can be used with the `Rocket Chip SoC generator`.
+The core exposes a custom memory interface, interrupt ports, and other misc. ports that are connected from within the tile to TileLink buses and other parameterization signals.
+
+.. Warning:: The Ibex mtvec register is 256 byte aligned. When writing/running tests, ensure that the trap vector is also 256 byte aligned.
+
+.. Warning:: The Ibex reset vector is located at BOOT_ADDR + 0x80.
+
+While the core itself is not a generator, we expose the same parameterization that the Ibex core provides so that all supported Ibex configurations are available.
+
+For more information, see the `GitHub repository for Ibex <https://github.com/lowRISC/ibex>`__.

docs/Generators/index.rst

@@ -28,6 +28,7 @@ so changes to the generators themselves will automatically be used when building
    SiFive-Generators
    SHA3
    CVA6
+   Ibex
    NVDLA
    Sodor
 

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

@@ -0,0 +1,15 @@
+package chipyard
+
+import chisel3._
+
+import freechips.rocketchip.config.{Config}
+
+// ---------------------
+// Ibex Configs
+// ---------------------
+
+// Multi-core and 32b heterogeneous configs are supported
+
+class IbexConfig extends Config(
+  new ibex.WithNIbexCores(1) ++
+  new chipyard.config.AbstractConfig)

scripts/tutorial-patches/build.sbt.patch

@@ -1,17 +1,17 @@
 diff --git a/build.sbt b/build.sbt
-index 3123c4b8..487fc428 100644
+index b1f7e004..f39c3712 100644
 --- a/build.sbt
 +++ b/build.sbt
 @@ -184,7 +184,7 @@ lazy val testchipipLib = "edu.berkeley.cs" %% "testchipip" % "1.0-020719-SNAPSHO
  lazy val chipyard = (project in file("generators/chipyard"))
    .sourceDependency(testchipip, testchipipLib)
    .dependsOn(rocketchip, boom, hwacha, sifive_blocks, sifive_cache, iocell,
 -    sha3, // On separate line to allow for cleaner tutorial-setup patches
-+//    sha3, // On separate line to allow for cleaner tutorial-setup patches
++    //sha3, // On separate line to allow for cleaner tutorial-setup patches
      dsptools, `rocket-dsp-utils`,
-     gemmini, icenet, tracegen, cva6, nvdla, sodor)
+     gemmini, icenet, tracegen, cva6, nvdla, sodor, ibex)
    .settings(libraryDependencies ++= rocketLibDeps.value)
-@@ -223,11 +223,11 @@ lazy val sodor = (project in file("generators/riscv-sodor"))
+@@ -228,11 +228,11 @@ lazy val sodor = (project in file("generators/riscv-sodor"))
    .settings(libraryDependencies ++= rocketLibDeps.value)
    .settings(commonSettings)