default.nix

@@ -52,7 +52,7 @@ let
       borderVmConf
     ];
   }).config.system;
-in {
+in rec {
   inherit evalModules;
 
   outputs = config.system.outputs // {
@@ -90,4 +90,16 @@ in {
       lua
     ];
   };
+
+  try-nand = pkgs.pkgsBuildBuild.writeShellScriptBin "try-nand.sh" ''
+    rootfs=$(mktemp)
+    cp ${outputs.default}/rootfs $rootfs
+    ${pkgs.pkgsBuildBuild.qemuLim}/bin/qemu-system-mips \
+      -M malta -echr 16 -m 272 \
+      -device nand,chip_id=0x59,id=nand -drive format=raw,file=''${rootfs},if=mtd,id=nand \
+      -serial mon:stdio -kernel ${outputs.default}/vmlinux \
+      -append "root=/dev/mtdblock0 console=ttyS0,115200 panic=10 oops=panic init=/bin/init loglevel=8 root=/dev/mtdblock0 rootfstype=squashfs fw_devlink=off mem=256M liminix mtdparts=phram0:16M(rootfs) phram.phram=phram0,0x90000000,16Mi,65536" \
+      -display none
+    rm $rootfs
+  '';
 }

overlay.nix

@@ -254,6 +254,7 @@ extraPkgs // {
   qemuLim = let q = prev.qemu.overrideAttrs (o: {
     patches = o.patches ++ [
       ./pkgs/qemu/arm-image-friendly-load-addr.patch
+      ./pkgs/qemu/mips-with-nand.patch
     ];
   }); in q.override { nixosTestRunner = true; sdlSupport = false; };
 

pkgs/qemu/mips-with-nand.patch

@@ -0,0 +1,25 @@
+From 875b1f312b6a5b432e020723007a374d82a797f1 Mon Sep 17 00:00:00 2001
+From: Raito Bezarius <masterancpp@gmail.com>
+Date: Mon, 7 Oct 2024 13:05:06 +0200
+Subject: [PATCH] feat: support NAND devices for MIPS
+
+Signed-off-by: Raito Bezarius <masterancpp@gmail.com>
+---
+ hw/mips/Kconfig | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/hw/mips/Kconfig b/hw/mips/Kconfig
+index 692bede538..60738ac659 100644
+--- a/hw/mips/Kconfig
++++ b/hw/mips/Kconfig
+@@ -10,6 +10,7 @@ config MALTA
+     select MIPS_CPS
+     select PIIX
+     select PFLASH_CFI01
++    select NAND
+     select SERIAL
+     select SMBUS_EEPROM
+ 
+-- 
+2.46.0
+