--- a/arch/mips/kernel/head.S
+++ b/arch/mips/kernel/head.S
@@ -122,6 +122,10 @@
 
 	j kernel_entry
 	nop
+
+EXPORT(_image_cmdline)
+       .ascii "CMDLINE:"
+
 #ifndef CONFIG_NO_EXCEPT_FILL
 	/*
 	 * Reserved space for exception handlers.
