From eb9c99b0fd94f7ea3e97f351044d522ef83c2d40 Mon Sep 17 00:00:00 2001
From: tracer-ysyx <tracer@ysyx.org>
Date: Wed, 3 Jan 2024 00:10:12 +0800
Subject: [PATCH] =?UTF-8?q?>=20nvboard=20ysyx=5F22040000=20=E6=9D=8E?=
 =?UTF-8?q?=E5=BF=83=E6=9D=A8=20Linux=20calcite=206.1.69=20#1-NixOS=20SMP?=
 =?UTF-8?q?=20PREEMPT=5FDYNAMIC=20Wed=20Dec=2020=2016:00:29=20UTC=202023?=
 =?UTF-8?q?=20x86=5F64=20GNU/Linux=20=2000:10:12=20=20up=202=20days=20=208?=
 =?UTF-8?q?:49,=20=202=20users,=20=20load=20average:=200.43,=200.56,=200.4?=
 =?UTF-8?q?9?=
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Content-Transfer-Encoding: 8bit

---
 npc/.gitignore |  6 ++++
 npc/Makefile   |  1 -
 npc/build.sbt  | 22 +++++++++++++++
 npc/flake.nix  | 76 +++++++++++++++++++++++++++++++++++++++++++++++---
 4 files changed, 100 insertions(+), 5 deletions(-)
 create mode 100644 npc/build.sbt

diff --git a/npc/.gitignore b/npc/.gitignore
index 7040bf9..27545c4 100644
--- a/npc/.gitignore
+++ b/npc/.gitignore
@@ -10,3 +10,9 @@
 !.gitignore
 !README.md
 build/
+
+*.class
+*.log
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
diff --git a/npc/Makefile b/npc/Makefile
index 1f78dc1..ee02342 100644
--- a/npc/Makefile
+++ b/npc/Makefile
@@ -61,7 +61,6 @@ sim: sim-bin git_trace_sim
 	@echo "================================"
 	@$(OBJDIR)/Vexample
 
-
 compile_commands.json: clean
 	bear --output nvboard.json -- $(MAKE) nvboard-bin
 	bear --output all.json -- $(MAKE) sim-bin
diff --git a/npc/build.sbt b/npc/build.sbt
new file mode 100644
index 0000000..792a764
--- /dev/null
+++ b/npc/build.sbt
@@ -0,0 +1,22 @@
+ThisBuild / scalaVersion     := "2.13.12"
+ThisBuild / version          := "0.1.0"
+
+
+val chiselVersion = "5.1.0"
+
+lazy val root = (project in file("."))
+  .settings(
+    name := "ChiselLearning",
+    libraryDependencies ++= Seq(
+      "org.chipsalliance" %% "chisel" % chiselVersion,
+      "edu.berkeley.cs" %% "chiseltest" % "5.0.2" % "test"
+    ),
+    scalacOptions ++= Seq(
+      "-language:reflectiveCalls",
+      "-deprecation",
+      "-feature",
+      "-Xcheckinit",
+      "-Ymacro-annotations",
+    ),
+    addCompilerPlugin("org.chipsalliance" % "chisel-plugin" % chiselVersion cross CrossVersion.full),
+  )
\ No newline at end of file
diff --git a/npc/flake.nix b/npc/flake.nix
index 3eae8b3..42348c3 100644
--- a/npc/flake.nix
+++ b/npc/flake.nix
@@ -6,30 +6,98 @@
 
   outputs = { self, ... }@inputs: with inputs;
     flake-utils.lib.eachDefaultSystem (system:
-     let pkgs = nixpkgs.legacyPackages.${system}; in
+      let pkgs = nixpkgs.legacyPackages.${system}; in
       {
         devShells.default = pkgs.mkShell {
           packages = with pkgs; [
-            verilator
             gtkwave
-            gcc
             gdb
             jq
             bear
             clang-tools
             rnix-lsp
+            sbt
           ];
 
           nativeBuildInputs = with pkgs; [
+            verilator
+            gcc
+            python3
+            scala
+            self.packages.${system}.circt
+          ];
+
+          buildInputs = with pkgs; [
             SDL2
             SDL2_image
-            python3
+            jre
           ];
 
           shellHook = ''
             export NEMU_HOME=/home/xin/repo/ysyx-workbench/nemu
           '';
         };
+        
+        # This version (1.43.0) of circt does not exist in nixpkgs
+        # and Chisel 5.1.0 specifically build against it, so here we are.
+        # Ref: https://github.com/NixOS/nixpkgs/blob/b6465c8/pkgs/development/compilers/circt/default.nix
+        packages.circt =
+          with pkgs;
+          let
+            pythonEnv = python3.withPackages (ps: [ ps.psutil ]);
+          in
+          stdenv.mkDerivation rec {
+            pname = "circt";
+            version = "1.43.0";
+            src = fetchFromGitHub {
+              owner = "llvm";
+              repo = "circt";
+              rev = "firtool-${version}";
+              sha256 = "sha256-RkjigboswLkLgLkgOGahQLIygCkC3Q9rbVw3LqIzREY=";
+              fetchSubmodules = true;
+            };
+
+            requiredSystemFeatures = [ "big-parallel" ];
+
+            nativeBuildInputs = [ cmake ninja git pythonEnv ];
+
+            cmakeDir = "../llvm/llvm";
+            cmakeFlags = [
+              "-DLLVM_ENABLE_BINDINGS=OFF"
+              "-DLLVM_ENABLE_OCAMLDOC=OFF"
+              "-DLLVM_BUILD_EXAMPLES=OFF"
+              "-DLLVM_OPTIMIZED_TABLEGEN=ON"
+              "-DLLVM_ENABLE_PROJECTS=mlir"
+              "-DLLVM_EXTERNAL_PROJECTS=circt"
+              "-DLLVM_EXTERNAL_CIRCT_SOURCE_DIR=.."
+              "-DCIRCT_LLHD_SIM_ENABLED=OFF"
+            ];
+
+            LIT_FILTER_OUT = if stdenv.cc.isClang then "CIRCT :: Target/ExportSystemC/.*\.mlir" else null;
+
+            preConfigure = ''
+              find ./test -name '*.mlir' -exec sed -i 's|/usr/bin/env|${coreutils}/bin/env|g' {} \;
+            '';
+
+            installPhase = ''
+              runHook preInstall
+              mkdir -p $out/bin
+              mv bin/{{fir,hls}tool,circt-{as,dis,lsp-server,opt,reduce,translate}} $out/bin
+              runHook postInstall
+            '';
+
+            doCheck = true;
+            checkTarget = "check-circt check-circt-integration";
+
+            meta = {
+              description = "Circuit IR compilers and tools";
+              homepage = "https://circt.org/";
+              license = lib.licenses.asl20;
+              maintainers = with lib.maintainers; [ sharzy ];
+              platforms = lib.platforms.all;
+            };
+          };
       }
     );
 }
+