Index: linux-2.6.21.1/arch/mips/kernel/head.S
===================================================================
--- linux-2.6.21.1.orig/arch/mips/kernel/head.S	2007-06-07 01:26:11.862575128 +0200
+++ linux-2.6.21.1/arch/mips/kernel/head.S	2007-06-07 01:31:06.499783464 +0200
@@ -133,6 +133,9 @@
 	j kernel_entry
 	nop
 
+EXPORT(_image_cmdline)
+ 	.ascii "CMDLINE:"
+
 	/*
 	 * Reserved space for exception handlers.
 	 * Necessary for machines which link their kernels at KSEG0.