Better vga buffer

src/main.rs

@@ -13,7 +13,9 @@ fn panic(_info: &PanicInfo) -> !{
 #[no_mangle]
 pub extern "C" fn _start() -> ! {
 
-  vga_buffer::yolo();
+  use core::fmt::Write;
+  vga_buffer::WRITER.lock().write_str("Gamarjoba, munde").unwrap();
+  write!(vga_buffer::WRITER.lock(), ", hella {} bro", 2).unwrap();
 
   loop {}
 }

src/vga_buffer.rs

@@ -1,6 +1,7 @@
 use volatile::Volatile;
 use core::fmt;
-use core::fmt::Write;
+use spin::Mutex;
+use lazy_static::lazy_static;
 
 #[allow(dead_code)]
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
@@ -95,11 +96,11 @@ impl fmt::Write for Writer {
   }
 }
 
-pub fn yolo() {
-  let mut writer = Writer {
+
+lazy_static! {
+  pub static ref WRITER: Mutex<Writer> = Mutex::new(Writer {
     column_position: 0, color_code: ColorCode::new(Color::Yellow, Color::Black),
     buffer: unsafe { &mut *(0xb8000 as *mut Buffer) },
-  };
-
-  write!(writer, "Gamarjoba munde {}", 34);
+  });
 }
+