riscv: board: Add Andes Voyager board Kconfig support

The Voyager is Andes' first RISC-V development board.
It is built around Qilai SoC,
which includes Andes AX45MP quad-core cluster.

Introduce the Kconfig entry for the Voyager board.

Signed-off-by: Randolph Sheng-Kai Lin <randolph@andestech.com>
Signed-off-by: Leo Yu-Chi Liang <ycliang@andestech.com>

arch/riscv/Kconfig

@@ -11,6 +11,9 @@ choice
 config TARGET_ANDES_AE350
 	bool "Support Andes ae350"
 
+config TARGET_ANDES_VOYAGER
+	bool "Support Andes Voyager Board"
+
 config TARGET_BANANAPI_F3
 	bool "Support BananaPi F3 Board"
 
@@ -101,6 +104,7 @@ config SPL_ZERO_MEM_BEFORE_USE
 
 # board-specific options below
 source "board/andestech/ae350/Kconfig"
+source "board/andestech/voyager/Kconfig"
 source "board/aspeed/ibex_ast2700/Kconfig"
 source "board/canaan/k230_canmv/Kconfig"
 source "board/emulation/qemu-riscv/Kconfig"

board/andestech/voyager/Kconfig

@@ -0,0 +1,44 @@
+if TARGET_ANDES_VOYAGER
+
+config SYS_CPU
+	default "andes"
+
+config SYS_BOARD
+	default "voyager"
+
+config SYS_VENDOR
+	default "andestech"
+
+config SYS_SOC
+	default "qilai"
+
+config SYS_CONFIG_NAME
+	default "voyager"
+
+config ENV_SIZE
+	default 0x2000 if ENV_IS_IN_SPI_FLASH
+
+config ENV_OFFSET
+	default 0x1F0000 if ENV_IS_IN_SPI_FLASH
+
+config SPL_TEXT_BASE
+	default 0x400800000
+
+config SPL_OPENSBI_LOAD_ADDR
+	default 0x400000000
+
+config SYS_FDT_BASE
+	hex
+	default 0x81E0000 if OF_SEPARATE
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+	select RISCV_ANDES
+	select SUPPORT_SPL
+	select BINMAN if SPL
+	imply SMP
+	imply SPL_RAM_SUPPORT
+	imply SPL_RAM_DEVICE
+	imply OF_HAS_PRIOR_STAGE
+
+endif