diff --git a/src/arch/aarch64/time.rs b/src/arch/aarch64/time.rs
index 8bf457db66..54e2354b9f 100644
--- a/src/arch/aarch64/time.rs
+++ b/src/arch/aarch64/time.rs
@@ -1,4 +1,11 @@
+use crate::time::NANOS_PER_SEC;
+
 pub fn monotonic_absolute() -> u128 {
     //TODO: aarch64 generic timer counter
-    *crate::time::OFFSET.lock()
+    let ticks: usize;
+    unsafe { core::arch::asm!("mrs {}, cntpct_el0", out(reg) ticks) };
+    let freq: usize;
+    unsafe { core::arch::asm!("mrs {}, cntfrq_el0", out(reg) freq) };
+
+    ticks as u128 * NANOS_PER_SEC / freq as u128
 }