diff --git a/modules/axruntime/src/lib.rs b/modules/axruntime/src/lib.rs
index 3da48db99..0a512db34 100644
--- a/modules/axruntime/src/lib.rs
+++ b/modules/axruntime/src/lib.rs
@@ -110,6 +110,8 @@ static INITED_CPUS: AtomicUsize = AtomicUsize::new(0);
 fn is_init_ok() -> bool {
     INITED_CPUS.load(Ordering::Acquire) == axconfig::SMP
 }
+
+#[cfg(feature = "alloc")]
 cfg_if::cfg_if! {
     if #[cfg(any(target_arch = "x86", target_arch = "x86_64"))] {
         unsafe fn get_boot_str() -> &'static str {
@@ -129,21 +131,7 @@ cfg_if::cfg_if! {
         }
     }
 }
-// fn get_boot_str() -> &'static str {
-// 	if cfg!(any(target_arch = "x86", target_arch = "x86_64")) {
-// 		let cmdline_buf: &[u8] = &axhal::COMLINE_BUF;
-// 		let mut len = 0;
-// 		for c in cmdline_buf.iter() {
-// 			if *c == 0 {
-// 				break;
-// 			}
-// 			len += 1;
-// 		}
-// 		core::str::from_utf8(&cmdline_buf[..len]).unwrap()
-// 	} else {
-// 		dtb::get_node("chosen").unwrap().prop("bootargs").str()
-// 	};
-// }
+
 /// The main entry point of the ArceOS runtime.
 ///
 /// It is called from the bootstrapping code in [axhal]. `cpu_id` is the ID of