--- a/arch/mips/au1000/mtx-1/init.c
+++ b/arch/mips/au1000/mtx-1/init.c
@@ -54,7 +54,7 @@ void __init prom_init(void)
 	prom_argv = (char **) fw_arg1;
 	prom_envp = (char **) fw_arg2;
 
-	prom_init_cmdline();
+	strcpy(arcs_cmdline, CONFIG_CMDLINE);
 
 	memsize_str = prom_getenv("memsize");
 	if (!memsize_str)
