v4.19.13 snapshot.
diff --git a/arch/arm/mach-sti/board-dt.c b/arch/arm/mach-sti/board-dt.c
new file mode 100644
index 0000000..e04cd1b
--- /dev/null
+++ b/arch/arm/mach-sti/board-dt.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2013 STMicroelectronics (R&D) Limited.
+ * Author(s): Srinivas Kandagatla <srinivas.kandagatla@st.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/irq.h>
+#include <linux/of_platform.h>
+#include <asm/hardware/cache-l2x0.h>
+#include <asm/mach/arch.h>
+
+#include "smp.h"
+
+static const char *const stih41x_dt_match[] __initconst = {
+ "st,stih415",
+ "st,stih416",
+ "st,stih407",
+ "st,stih410",
+ "st,stih418",
+ NULL
+};
+
+static void sti_l2_write_sec(unsigned long val, unsigned reg)
+{
+ /*
+ * We can't write to secure registers as we are in non-secure
+ * mode, until we have some SMI service available.
+ */
+}
+
+DT_MACHINE_START(STM, "STi SoC with Flattened Device Tree")
+ .dt_compat = stih41x_dt_match,
+ .l2c_aux_val = L2C_AUX_CTRL_SHARED_OVERRIDE |
+ L310_AUX_CTRL_DATA_PREFETCH |
+ L310_AUX_CTRL_INSTR_PREFETCH |
+ L2C_AUX_CTRL_WAY_SIZE(4),
+ .l2c_aux_mask = 0xc0000fff,
+ .smp = smp_ops(sti_smp_ops),
+ .l2c_write_sec = sti_l2_write_sec,
+MACHINE_END