diff --git a/include/asm-ppc64/setup.h b/include/asm-ppc64/setup.h
new file mode 100644
index 0000000..b257b83
--- /dev/null
+++ b/include/asm-ppc64/setup.h
@@ -0,0 +1,6 @@
+#ifndef _PPC_SETUP_H
+#define _PPC_SETUP_H
+
+#define COMMAND_LINE_SIZE 512
+
+#endif /* _PPC_SETUP_H */