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/boot_init_dram.h b/drivers/renesas/rzg/ddr/boot_init_dram.h
new file mode 100644
index 0000000..294582f
--- /dev/null
+++ b/drivers/renesas/rzg/ddr/boot_init_dram.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2020, Renesas Electronics Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef BOOT_INIT_DRAM_H
+#define BOOT_INIT_DRAM_H
+
+extern int32_t rzg_dram_init(void);
+
+#define INITDRAM_OK 0
+#define INITDRAM_NG 0xffffffff
+#define INITDRAM_ERR_I 0xffffffff
+#define INITDRAM_ERR_O 0xfffffffe
+#define INITDRAM_ERR_T 0xfffffff0
+
+#endif /* BOOT_INIT_DRAM_H */