Add qemu serial output to stdio

Signed-off-by: Noah Knegt <git@noahknegt.com>

LICENSE

@@ -1,18 +1,18 @@
 MIT License
 
-Copyright (c) 2025 noah.knegt
+Copyright (c) 2025 Noah Knegt <personal@noahknegt.com>
 
-Permission is hereby granted, free of charge, to any person obtaining a copy of this software and 
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
-associated documentation files (the "Software"), to deal in the Software without restriction, including 
+associated documentation files (the "Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
+without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the 
+copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the
 following conditions:
 
-The above copyright notice and this permission notice shall be included in all copies or substantial 
+The above copyright notice and this permission notice shall be included in all copies or substantial
 portions of the Software.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
-LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO 
+LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO
-EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 
+EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 USE OR OTHER DEALINGS IN THE SOFTWARE.

rust-toolchain.toml

@@ -1,5 +1,7 @@
 [toolchain]
-channel = "nightly"
+# The nightly version that was build on 24-07-2025 is the last known working version,
+# the c-int-width definition for rust targets has changed from a string to a u16
+channel = "nightly-2025-07-24"
 targets = [
     "x86_64-unknown-none"
 ]

src/main.rs

@@ -4,17 +4,22 @@ fn main() {
     // read env variables that were set in build script
     let uefi_path = env!("UEFI_PATH");
     let bios_path = env!("BIOS_PATH");
-    
+
     // choose whether to start the UEFI or BIOS image
     let uefi = true;
 
     let mut cmd = std::process::Command::new("qemu-system-x86_64");
     if uefi {
         cmd.arg("-bios").arg(ovmf_prebuilt::ovmf_pure_efi());
-        cmd.arg("-drive").arg(format!("format=raw,file={uefi_path}"));
+        cmd.arg("-drive")
+            .arg(format!("format=raw,file={uefi_path}"));
     } else {
-        cmd.arg("-drive").arg(format!("format=raw,file={bios_path}"));
+        cmd.arg("-drive")
+            .arg(format!("format=raw,file={bios_path}"));
     }
+
+    cmd.arg("-serial").arg("stdio");
+
     let mut child = cmd.spawn().unwrap();
     child.wait().unwrap();
 }