Add a qemu-uefi executable to start the UEFI disk image in QEMU

Cargo.lock

@@ -132,6 +132,7 @@ version = "0.1.0"
 dependencies = [
  "bootloader",
  "kernel",
+ "ovmf-prebuilt",
 ]
 
 [[package]]
@@ -495,6 +496,12 @@ version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
 
+[[package]]
+name = "ovmf-prebuilt"
+version = "0.1.0-alpha.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa50141d081512ab30fd9e7e7692476866df5098b028536ad6680212e717fa8d"
+
 [[package]]
 name = "parking"
 version = "2.1.0"

Cargo.toml

@@ -8,6 +8,7 @@ default-run = "blog_os"
 members = ["kernel"]
 
 [dependencies]
+ovmf-prebuilt = "0.1.0-alpha"
 
 [build-dependencies]
 kernel = { path = "kernel", artifact = "bin", target = "x86_64-unknown-none" }

src/bin/qemu-uefi.rs

@@ -0,0 +1,13 @@
+use std::{
+    env,
+    process::{self, Command},
+};
+
+fn main() {
+    let mut qemu = Command::new("qemu-system-x86_64");
+    qemu.arg("-drive");
+    qemu.arg(format!("format=raw,file={}", env!("UEFI_IMAGE")));
+    qemu.arg("-bios").arg(ovmf_prebuilt::ovmf_pure_efi());
+    let exit_status = qemu.status().unwrap();
+    process::exit(exit_status.code().unwrap_or(-1));
+}