renesas: rzg: Add support for DRAM initialization
Add support for initializing DRAM on RZ/G2M SoC.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Change-Id: I99f1a6971a061a44687af498d55306a93e4fc8f7
diff --git a/drivers/renesas/rzg/ddr/dram_sub_func.h b/drivers/renesas/rzg/ddr/dram_sub_func.h
new file mode 100644
index 0000000..7affb61
--- /dev/null
+++ b/drivers/renesas/rzg/ddr/dram_sub_func.h
@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) 2020, Renesas Electronics Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef DRAM_SUB_FUNC_H
+#define DRAM_SUB_FUNC_H
+
+#define DRAM_UPDATE_STATUS_ERR -1
+#define DRAM_BOOT_STATUS_COLD 0
+#define DRAM_BOOT_STATUS_WARM 1
+
+#endif /* DRAM_SUB_FUNC_H */