diff --git a/libc/kernel/arch-arm/asm/delay.h b/libc/kernel/arch-arm/asm/delay.h
new file mode 100644
index 0000000..631fd9b
--- /dev/null
+++ b/libc/kernel/arch-arm/asm/delay.h
@@ -0,0 +1,22 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef __ASM_ARM_DELAY_H
+#define __ASM_ARM_DELAY_H
+
+#include <asm/param.h>  
+
+#define MAX_UDELAY_MS 2
+
+#define udelay(n)   (__builtin_constant_p(n) ?   ((n) > (MAX_UDELAY_MS * 1000) ? __bad_udelay() :   __const_udelay((n) * ((2199023U*HZ)>>11))) :   __udelay(n))
+
+#endif
+