Create an EFI entry point function

src/main.rs

@@ -1,8 +1,16 @@
+#![feature(abi_efiapi)]
+
 #![no_std]
 #![no_main]
 
+use core::ffi::c_void;
 use core::panic::PanicInfo;
 
+#[no_mangle]
+pub extern "efiapi" fn efi_main(image: *mut c_void, system_table: *const c_void) -> usize {
+    loop {}
+}
+
 #[panic_handler]
 fn panic(_info: &PanicInfo) -> ! {
     loop {}