riscv: sophgo: milkv_duo: initial support added
Add support for Sophgo's Milk-V Duo board, only minimal device tree and
serial console are enabled, and it can boot via vendor first stage
bootloader.
Signed-off-by: Kongyang Liu <seashell11234455@gmail.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
diff --git a/board/sophgo/milkv_duo/Kconfig b/board/sophgo/milkv_duo/Kconfig
new file mode 100644
index 0000000..2a458f2
--- /dev/null
+++ b/board/sophgo/milkv_duo/Kconfig
@@ -0,0 +1,28 @@
+if TARGET_MILKV_DUO
+
+config SYS_BOARD
+ default "milkv_duo"
+
+config SYS_VENDOR
+ default "sophgo"
+
+config SYS_CPU
+ default "generic"
+
+config SYS_CONFIG_NAME
+ default "milkv_duo"
+
+config TEXT_BASE
+ default 0x80200000
+
+config ENV_SIZE
+ default 0x20000
+
+config ENV_SECT_SIZE
+ default 0x40000
+
+config BOARD_SPECIFIC_OPTIONS
+ def_bool y
+ select GENERIC_RISCV
+
+endif
diff --git a/board/sophgo/milkv_duo/MAINTAINERS b/board/sophgo/milkv_duo/MAINTAINERS
new file mode 100644
index 0000000..651a059
--- /dev/null
+++ b/board/sophgo/milkv_duo/MAINTAINERS
@@ -0,0 +1,6 @@
+Milk-V Duo
+M: Kongyang Liu <seashell11234455@gmail.com>
+S: Maintained
+F: board/sophgo/milkv_duo/
+F: configs/milkv_duo_defconfig
+F: doc/board/sophgo/milkv_duo.rst
diff --git a/board/sophgo/milkv_duo/Makefile b/board/sophgo/milkv_duo/Makefile
new file mode 100644
index 0000000..a087013
--- /dev/null
+++ b/board/sophgo/milkv_duo/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (c) 2024, Kongyang Liu <seashell11234455@gmail.com>
+
+obj-y := board.o
diff --git a/board/sophgo/milkv_duo/board.c b/board/sophgo/milkv_duo/board.c
new file mode 100644
index 0000000..eaa47be
--- /dev/null
+++ b/board/sophgo/milkv_duo/board.c
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2024, Kongyang Liu <seashell11234455@gmail.com>
+ */
+
+int board_init(void)
+{
+ return 0;
+}