Add Arch for SG2000. Add Board for Milk-V Duo S.

arch/risc-v/Kconfig

@@ -322,6 +322,25 @@ config ARCH_CHIP_K230
 	---help---
 		Kendryte K230 SoC (RV64GCV and RV64GCVX C908 cores).
 
+config ARCH_CHIP_SG2000
+	bool "SOPHGO SG2000"
+	select ARCH_RV64
+	select ARCH_RV_ISA_M
+	select ARCH_RV_ISA_A
+	select ARCH_RV_ISA_C
+	select ARCH_HAVE_FPU
+	select ARCH_HAVE_DPFPU
+	select ARCH_HAVE_MULTICPU
+	select ARCH_HAVE_MPU
+	select ARCH_MMU_TYPE_SV39
+	select ARCH_HAVE_ADDRENV
+	select ARCH_NEED_ADDRENV_MAPPING
+	select ARCH_HAVE_S_MODE
+	select ONESHOT
+	select ALARM_ARCH
+	---help---
+		SOPHGO SG2000 SoC.
+
 config ARCH_CHIP_RISCV_CUSTOM
 	bool "Custom RISC-V chip"
 	select ARCH_CHIP_CUSTOM
@@ -452,6 +471,7 @@ config ARCH_CHIP
 	default "jh7110"                if ARCH_CHIP_JH7110
 	default "bl808"                 if ARCH_CHIP_BL808
 	default "k230"                  if ARCH_CHIP_K230
+	default "sg2000"                if ARCH_CHIP_SG2000
 
 config ARCH_RISCV_INTXCPT_EXTENSIONS
 	bool "RISC-V Integer Context Extensions"
@@ -658,4 +678,7 @@ endif
 if ARCH_CHIP_K230
 source "arch/risc-v/src/k230/Kconfig"
 endif
+if ARCH_CHIP_SG2000
+source "arch/risc-v/src/sg2000/Kconfig"
+endif
 endif # ARCH_RISCV

boards/Kconfig

@@ -2007,6 +2007,13 @@ config ARCH_BOARD_BL808_OX64
 		This options selects support for NuttX on PINE64 Ox64 based
 		on Bouffalo Lab BL808 SoC.
 
+config ARCH_BOARD_SG2000_DUOS
+	bool "Milk-V Duo S"
+	depends on ARCH_CHIP_SG2000
+	---help---
+		This options selects support for NuttX on Milk-V Duo S based
+		on SOPHGO SG2000 SoC.
+
 config ARCH_BOARD_S32K118EVB
 	bool "NXP S32K118EVB"
 	depends on ARCH_CHIP_S32K118
@@ -3368,6 +3375,7 @@ config ARCH_BOARD
 	default "star64"                    if ARCH_BOARD_JH7110_STAR64
 	default "canmv230"                  if ARCH_BOARD_K230_CANMV
 	default "ox64"                      if ARCH_BOARD_BL808_OX64
+	default "duos"                      if ARCH_BOARD_SG2000_DUOS
 	default "sabre-6quad"               if ARCH_BOARD_SABRE_6QUAD
 	default "tc397"                     if ARCH_BOARD_TC397
 	default "qemu-armv7a"               if ARCH_BOARD_QEMU_ARMV7A
@@ -4302,6 +4310,9 @@ endif
 if ARCH_BOARD_BL808_OX64
 source "boards/risc-v/bl808/ox64/Kconfig"
 endif
+if ARCH_BOARD_SG2000_DUOS
+source "boards/risc-v/sg2000/duos/Kconfig"
+endif
 if ARCH_BOARD_ESP32C3_DEVKIT
 source "boards/risc-v/esp32c3-legacy/esp32c3-devkit/Kconfig"
 endif