Index: linux-3.10.20/arch/mips/Kconfig
===================================================================
--- linux-3.10.20.orig/arch/mips/Kconfig
+++ linux-3.10.20/arch/mips/Kconfig
@@ -992,6 +992,10 @@ config SYNC_R4K
 config MIPS_MACHINE
 	def_bool n
 
+config IMAGE_CMDLINE_HACK
+	bool "OpenWrt specific image command line hack"
+	default n
+
 config NO_IOPORT
 	def_bool n
 
Index: linux-3.10.20/arch/mips/kernel/head.S
===================================================================
--- linux-3.10.20.orig/arch/mips/kernel/head.S
+++ linux-3.10.20/arch/mips/kernel/head.S
@@ -140,6 +140,12 @@ FEXPORT(__kernel_entry)
 	j	kernel_entry
 #endif
 
+#ifdef CONFIG_IMAGE_CMDLINE_HACK
+	.ascii  "CMDLINE:"
+EXPORT(__image_cmdline)
+	.fill   0x400
+#endif /* CONFIG_IMAGE_CMDLINE_HACK */
+
 	__REF
 
 NESTED(kernel_entry, 16, sp)			# kernel entry point