Copy boot config file to boot partition

boot.json

@@ -0,0 +1,10 @@
+{
+  "frame_buffer": {
+    "minimum_framebuffer_height": null,
+    "minimum_framebuffer_width": null
+  },
+  "log_level": "Trace",
+  "frame_buffer_logging": true,
+  "serial_logging": true,
+  "_test_sentinel": 0
+}

build.rs

@@ -1,10 +1,4 @@
-use std::{
-    env,
-    fs,
-    os::unix::ffi::OsStrExt,
-    path::PathBuf,
-    process::Command,
-};
+use std::{env, fs, os::unix::ffi::OsStrExt, path::PathBuf, process::Command};
 
 use gpt::{mbr::ProtectiveMBR, GptConfig};
 
@@ -15,6 +9,7 @@ fn main() {
     println!("cargo:rerun-if-changed=build.rs");
     println!("cargo:rerun-if-changed=initrd_file_list");
     println!("cargo:rerun-if-changed=bootloader-x86_64-uefi.efi");
+    println!("cargo:rerun-if-changed=boot.json");
 
     // set by cargo, build scripts should use this directory for output files
     let out_dir = std::env::var_os("OUT_DIR").unwrap();
@@ -151,6 +146,13 @@ fn main() {
         .arg("::ramdisk")
         .output()
         .unwrap();
+    Command::new("mcopy")
+        .arg("-i")
+        .arg("tmp_esp.img")
+        .arg("boot.json")
+        .arg("::")
+        .output()
+        .unwrap();
 
     Command::new("dd")
         .arg("if=tmp_esp.img")