auto import from //depot/cupcake/@135843
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
+