diff --git a/arch/sparc64/openbios.c b/arch/sparc64/openbios.c
index a6c956a..6b2b041 100644
--- a/arch/sparc64/openbios.c
+++ b/arch/sparc64/openbios.c
@@ -547,6 +547,9 @@ void setup_timers(void)
 
 void udelay(unsigned int usecs)
 {
+    volatile int i;
+
+    for (i = 0; i < usecs * 100; i++);
 }
 
 static void init_memory(void)