v4.19.13 snapshot.
diff --git a/arch/arc/plat-sim/platform.c b/arch/arc/plat-sim/platform.c
new file mode 100644
index 0000000..5cda56b
--- /dev/null
+++ b/arch/arc/plat-sim/platform.c
@@ -0,0 +1,36 @@
+/*
+ * ARC simulation Platform support code
+ *
+ * Copyright (C) 2012 Synopsys, Inc. (www.synopsys.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/init.h>
+#include <asm/mach_desc.h>
+
+/*----------------------- Machine Descriptions ------------------------------
+ *
+ * Machine description is simply a set of platform/board specific callbacks
+ * This is not directly related to DeviceTree based dynamic device creation,
+ * however as part of early device tree scan, we also select the right
+ * callback set, by matching the DT compatible name.
+ */
+
+static const char *simulation_compat[] __initconst = {
+#ifdef CONFIG_ISA_ARCOMPACT
+ "snps,nsim",
+ "snps,nsimosci",
+#else
+ "snps,nsim_hs",
+ "snps,nsimosci_hs",
+ "snps,zebu_hs",
+#endif
+ NULL,
+};
+
+MACHINE_START(SIMULATION, "simulation")
+ .dt_compat = simulation_compat,
+MACHINE_END