From 2d44e5651eee8b50f3538c061714b8153a061572 Mon Sep 17 00:00:00 2001
From: Nick Spinale <nick@nickspinale.com>
Date: Mon, 10 Jun 2024 21:08:35 +0000
Subject: [PATCH] nix: Add Xilinx QEMU

Signed-off-by: Nick Spinale <nick@nickspinale.com>
---
 hacking/nix/scope/default.nix      | 12 +---
 hacking/nix/scope/qemu/default.nix | 16 ++++--
 hacking/nix/scope/qemu/xilinx.nix  | 89 ++++++++++++++++++++++++++++++
 hacking/nix/scope/worlds.nix       | 16 ++++++
 4 files changed, 119 insertions(+), 14 deletions(-)
 create mode 100644 hacking/nix/scope/qemu/xilinx.nix

diff --git a/hacking/nix/scope/default.nix b/hacking/nix/scope/default.nix
index 2eb313216..31edf7d47 100644
--- a/hacking/nix/scope/default.nix
+++ b/hacking/nix/scope/default.nix
@@ -261,15 +261,7 @@ superCallPackage ../rust-utils {} self //
 
   opensbi = callPackage ./opensbi.nix {};
 
-  qemuForSeL4 = callPackage ./qemu {
-    hostCpuTargets = [
-      "arm-softmmu"
-      "aarch64-softmmu"
-      "riscv32-softmmu"
-      "riscv64-softmmu"
-      "i386-softmmu"
-      "x86_64-softmmu"
-    ];
-  };
+  qemuForSeL4 = callPackage ./qemu {};
+  qemuForSeL4Xilinx = callPackage ./qemu/xilinx.nix {};
 
 })
diff --git a/hacking/nix/scope/qemu/default.nix b/hacking/nix/scope/qemu/default.nix
index 7159df9f3..ace709380 100644
--- a/hacking/nix/scope/qemu/default.nix
+++ b/hacking/nix/scope/qemu/default.nix
@@ -6,7 +6,7 @@
 
 { lib, stdenv
 , buildPackages
-, fetchurl, fetchpatch
+, fetchurl, fetchpatch, fetchFromGitHub, fetchFromGitLab
 , python3Packages
 , pkg-config, ninja, meson, perl
 , zlib, lzo, glib
@@ -15,10 +15,18 @@
 , texinfo
 , snappy, libaio, libtasn1, gnutls, nettle, curl
 , attr, libcap, libcap_ng, libslirp
-, hostCpuTargets ? []
+
+, hostCpuTargets ? [
+    "arm-softmmu"
+    "aarch64-softmmu"
+    "riscv32-softmmu"
+    "riscv64-softmmu"
+    "i386-softmmu"
+    "x86_64-softmmu"
+  ]
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: with finalAttrs; {
   pname = "qemu";
   version = "9.0.0";
 
@@ -94,4 +102,4 @@ stdenv.mkDerivation rec {
   preBuild = ''
     cd build
   '';
-}
+})
diff --git a/hacking/nix/scope/qemu/xilinx.nix b/hacking/nix/scope/qemu/xilinx.nix
new file mode 100644
index 000000000..26aaef83a
--- /dev/null
+++ b/hacking/nix/scope/qemu/xilinx.nix
@@ -0,0 +1,89 @@
+#
+# Copyright 2024, Colias Group, LLC
+#
+# SPDX-License-Identifier: BSD-2-Clause
+#
+
+{ lib, stdenv
+, fetchFromGitHub, fetchFromGitLab
+, python3, dtc
+, qemuForSeL4
+}:
+
+let
+  version = "xilinx_v2024.1";
+
+  src = fetchFromGitHub {
+    owner = "Xilinx";
+    repo = "qemu";
+    rev = version;
+    hash = "sha256-FKaoTRTftaIId+VkjMqKzcdO48ngQirymH4XLzMm+t8=";
+  };
+
+  keycodemapdb = fetchFromGitLab {
+    owner = "qemu-project";
+    repo = "keycodemapdb";
+    rev = "f5772a62ec52591ff6870b7e8ef32482371f22c6";
+    hash = "sha256-GbZ5mrUYLXMi0IX4IZzles0Oyc095ij2xAsiLNJwfKQ=";
+  };
+
+  berkeley-softfloat-3 = fetchFromGitLab {
+    owner = "qemu-project";
+    repo = "berkeley-softfloat-3";
+    rev = "b64af41c3276f97f0e181920400ee056b9c88037";
+    hash = "sha256-Yflpx+mjU8mD5biClNpdmon24EHg4aWBZszbOur5VEA=";
+  };
+
+  berkeley-testfloat-3 = fetchFromGitLab {
+    owner = "qemu-project";
+    repo = "berkeley-testfloat-3";
+    rev = "40619cbb3bf32872df8c53cc457039229428a263";
+    hash = "sha256-EBz1uYnjehCtJqrSFzERH23N5ELZU3gGM26JnsGFcWg=";
+  };
+
+  devicetrees = stdenv.mkDerivation {
+    name = "devicetrees";
+    src = fetchFromGitHub {
+      owner = "Xilinx";
+      repo = "qemu-devicetrees";
+      rev = version;
+      hash = "sha256-FYNo/2XVq/viWIB+yFDwzY5eaosC5omQZ3LyypMu2bM=";
+    };
+    nativeBuildInputs = [
+      python3
+      dtc
+    ];
+    dontConfigure = true;
+    dontFixup = true;
+    installPhase = ''
+      mv LATEST $out
+    '';
+  };
+
+in
+
+(qemuForSeL4.override {
+  hostCpuTargets = [
+    "aarch64-softmmu"
+  ];
+}).overrideAttrs (finalAttrs: previousAttrs: {
+  inherit version src;
+
+  postPatch = (previousAttrs.postPatch or "") + ''
+    pushd subprojects
+      ln -sf ${keycodemapdb} keycodemapdb
+
+      d=berkeley-softfloat-3
+      cp -r --no-preserve=owner,mode ${berkeley-softfloat-3} $d
+      cp -r packagefiles/$d/* $d
+
+      d=berkeley-testfloat-3
+      cp -r --no-preserve=owner,mode ${berkeley-testfloat-3} $d
+      cp -r packagefiles/$d/* $d
+    popd
+  '';
+
+  passthru = (previousAttrs.passthru or {}) // {
+    inherit devicetrees;
+  };
+})
diff --git a/hacking/nix/scope/worlds.nix b/hacking/nix/scope/worlds.nix
index e809b93fc..ee3de6204 100644
--- a/hacking/nix/scope/worlds.nix
+++ b/hacking/nix/scope/worlds.nix
@@ -156,6 +156,22 @@ in rec {
           board = "zcu102";
           config = "debug";
         };
+        canSimulate = true;
+        mkInstanceForPlatform = platUtils.qemu.mkMkInstanceForPlatform {
+          mkQemuCmd = loader: [
+            "${pkgsBuildBuild.this.qemuForSeL4Xilinx}/bin/qemu-system-aarch64"
+            # "${pkgsBuildBuild.this.qemuForSeL4}/bin/qemu-system-aarch64"
+              "-machine" "xlnx-zcu102"
+              # "-machine" "arm-generic-fdt"
+              # "-hw-dtb" "${pkgsBuildBuild.this.qemuForSeL4Xilinx.devicetrees}/SINGLE_ARCH//zcu102-arm.dtb"
+              "-m" "size=4G"
+              "-nographic"
+              "-serial" "mon:stdio"
+              "-device" "loader,file=${loader},addr=0x40000000,cpu-num=0"
+              "-device" "loader,addr=0xfd1a0104,data=0x0000000e,data-len=4"
+          ];
+        };
+
       };
     };