--- a/arch/mips/sibyte/cfe/setup.c
+++ b/arch/mips/sibyte/cfe/setup.c
@@ -293,7 +293,11 @@ void __init prom_init(void)
 			 * It's OK for direct boot to not provide a
 			 *  command line
 			 */
+#ifdef CONFIG_CMDLINE
+			strlcpy(arcs_cmdline, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
+#else
 			strcpy(arcs_cmdline, "root=/dev/ram0 ");
+#endif
 		} else {
 			/* The loader should have set the command line */
 			/* too early for panic to do any good */