--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -36,6 +36,7 @@ config ATHEROS_AR71XX
 	select SYS_SUPPORTS_BIG_ENDIAN
 	select SYS_HAS_EARLY_PRINTK
 	select MIPS_MACHINE
+	select PROM_EMU
 	help
 	  Support for Atheros AR71xx based boards.