board: mediatek: add MT7988 reference boards
This patch adds general board files based on MT7988 SoCs.
MT7988 uses one mmc controller for booting from both SD and eMMC,
and the pins of mmc controller booting from SD are also shared with
one of spi controllers.
So two configs are need for these boot types:
1. mt7988_rfb_defconfig - SPI-NOR, SPI-NAND and eMMC
2. mt7988_sd_rfb_defconfig - SPI-NAND and SD
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
diff --git a/include/configs/mt7988.h b/include/configs/mt7988.h
new file mode 100644
index 0000000..e63825a
--- /dev/null
+++ b/include/configs/mt7988.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Configuration for MediaTek MT7988 SoC
+ *
+ * Copyright (C) 2022 MediaTek Inc.
+ * Author: Sam Shih <sam.shih@mediatek.com>
+ */
+
+#ifndef __MT7988_H
+#define __MT7988_H
+
+#define CFG_MAX_MEM_MAPPED 0xC0000000
+
+#endif