diff --git a/build.sh b/build.sh
index cac0b4a13..5bbea6bc1 100755
--- a/build.sh
+++ b/build.sh
@@ -168,13 +168,15 @@ function milkv_pack_nor_nand()
mkdir -p out/$nor_out_name
if [ "${STORAGE_TYPE}" == "spinor" ]; then
- mv ${OUTPUT_DIR}/fip.bin out/$nor_out_name
- mv ${OUTPUT_DIR}/*.spinor out/$nor_out_name
+ cp ${OUTPUT_DIR}/fip.bin out/$nor_out_name
+ cp ${OUTPUT_DIR}/*.spinor out/$nor_out_name
else
- mv ${OUTPUT_DIR}/fip.bin out/$nor_out_name
- mv ${OUTPUT_DIR}/*.spinand out/$nor_out_name
+ cp ${OUTPUT_DIR}/fip.bin out/$nor_out_name
+ cp ${OUTPUT_DIR}/*.spinand out/$nor_out_name
fi
-
+
+ touch ${OUTPUT_DIR}/how_to_download.txt
+ echo "Copy all to a blank tf card, power on and automatically download firmware to NOR or NAND in U-bOOT." >> out/$nor_out_name/how_to_download.txt
print_info "Create spinor img successful: ${nor_out_name}"
else
print_err "Create spinor img failed!"
diff --git a/build/Makefile b/build/Makefile
index d0f804a26..a0e4ba690 100644
--- a/build/Makefile
+++ b/build/Makefile
@@ -589,6 +589,14 @@ endif
${Q}mkdir -p $(BR_OVERLAY_DIR)
${Q}cp -arf $(BR_ROOTFS_DIR)/* $(BR_OVERLAY_DIR)
+ # create partition mounting points and move sytems to read-write partitions
+ifeq ($(STORAGE_TYPE), spinand)
+ ${Q}mkdir -p $(BR_OVERLAY_DIR)/mnt/cfg
+ ${Q}mkdir -p $(BR_OVERLAY_DIR)/mnt/data
+ ${Q}mkdir -p $(OUTPUT_DIR)/system
+ ${Q}cp -arf $(BR_OVERLAY_DIR)/mnt/system/* $(OUTPUT_DIR)/system
+endif
+
br-rootfs-pack:export TARGET_OUTPUT_DIR=$(BR_DIR)/output/$(BR_BOARD)
br-rootfs-pack:
$(call print_target)
@@ -597,7 +605,7 @@ br-rootfs-pack:
# ${Q}rm -rf $(BR_ROOTFS_DIR)/*
${Q}rm -rf $(BR_MV_VENDOR_DIR)
# copy rootfs to rawimg dir
-ifeq ($(STORAGE_TYPE),spinand)
+ifeq ($(STORAGE_TYPE), spinand)
${Q}python3 $(COMMON_TOOLS_PATH)/spinand_tool/mkubiimg.py --ubionly $(FLASH_PARTITION_XML) ROOTFS $(TARGET_OUTPUT_DIR)/images/rootfs.squashfs $(OUTPUT_DIR)/rawimages/rootfs.spinand -b $(CONFIG_NANDFLASH_BLOCKSIZE) -p $(CONFIG_NANDFLASH_PAGESIZE)
$(call raw2cimg ,rootfs.$(STORAGE_TYPE))
else ifeq ($(STORAGE_TYPE), spinor)
diff --git a/build/boards/cv180x/cv1800b_milkv_duo_spinand/config.json b/build/boards/cv180x/cv1800b_milkv_duo_spinand/config.json
new file mode 100644
index 000000000..7962aa5dd
--- /dev/null
+++ b/build/boards/cv180x/cv1800b_milkv_duo_spinand/config.json
@@ -0,0 +1,6 @@
+{
+ "ddr_cfg_list": [
+ "ddr2_1333_x16"
+ ],
+ "board_information": "C906B + SPINAND 128MB + QFN SIP 64MB"
+}
diff --git a/build/boards/cv180x/cv1800b_milkv_duo_spinand/cv1800b_milkv_duo_spinand_defconfig b/build/boards/cv180x/cv1800b_milkv_duo_spinand/cv1800b_milkv_duo_spinand_defconfig
new file mode 100644
index 000000000..c6cf61e84
--- /dev/null
+++ b/build/boards/cv180x/cv1800b_milkv_duo_spinand/cv1800b_milkv_duo_spinand_defconfig
@@ -0,0 +1,44 @@
+CONFIG_CHIP_cv1800b=y
+CONFIG_BOARD_milkv_duo_spinand=y
+CONFIG_DDR_CFG_ddr2_1333_x16=y
+CONFIG_ARCH="riscv"
+CONFIG_CROSS_COMPILE="riscv64-unknown-linux-musl-"
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_KERNEL_ENTRY_HACK=y
+CONFIG_KERNEL_ENTRY_HACK_ADDR="0x80200000"
+CONFIG_TOOLCHAIN_MUSL_RISCV64=y
+CONFIG_FLASH_SIZE_SHRINK=y
+CONFIG_NO_FB=y
+CONFIG_NO_TP=y
+CONFIG_DDR_64MB_SIZE=y
+CONFIG_BOOT_IMAGE_SINGLE_DTB=y
+CONFIG_STORAGE_TYPE_spinand=y
+CONFIG_SENSOR_TUNING_PARAM_cv180x_src_sms_sc200ai=y
+CONFIG_SENSOR_SMS_SC200AI=y
+CONFIG_SENSOR_GCORE_GC2053=y
+CONFIG_SENSOR_GCORE_GC2083=y
+CONFIG_SENSOR_SMS_SC035HGS=y
+CONFIG_SENSOR_OV_OV5647=y
+CONFIG_UBOOT_2021_10=y
+CONFIG_KERNEL_SRC_5.10=y
+CONFIG_KERNEL_LZMA=y
+CONFIG_SKIP_RAMDISK=y
+# CONFIG_ROOTFS_OVERLAYFS is not set
+# CONFIG_TARGET_PACKAGE_CVITRACER is not set
+# CONFIG_TARGET_PACKAGE_GDBSERVER is not set
+# CONFIG_TARGET_PACKAGE_LIBCRYPTO is not set
+# CONFIG_TARGET_PACKAGE_LIBZ is not set
+# CONFIG_TARGET_PACKAGE_OTASERVER is not set
+# CONFIG_TARGET_PACKAGE_RSYSLOG is not set
+CONFIG_TARGET_PACKAGE_CRONTABS=y
+# CONFIG_TARGET_PACKAGE_GATORD is not set
+CONFIG_TARGET_PACKAGE_WIFI=y
+CONFIG_TARGET_PACKAGE_DROPBEAR=y
+CONFIG_TARGET_PACKAGE_NTP=y
+CONFIG_ENABLE_FREERTOS=y
+CONFIG_ENABLE_RTOS_DUMP_PRINT=y
+CONFIG_DUMP_PRINT_SZ_IDX=17
+CONFIG_USE_4K_ERASE_SIZE_FOR_JFFS2=y
+CONFIG_USB_OSDRV_CVITEK_GADGET=n
+CONFIG_BUILDROOT_FS=y
+CONFIG_BUILD_FOR_DEBUG=y
diff --git a/build/boards/cv180x/cv1800b_milkv_duo_spinand/dts_riscv/cv1800b_milkv_duo_spinand.dts b/build/boards/cv180x/cv1800b_milkv_duo_spinand/dts_riscv/cv1800b_milkv_duo_spinand.dts
new file mode 100644
index 000000000..1dbc63b93
--- /dev/null
+++ b/build/boards/cv180x/cv1800b_milkv_duo_spinand/dts_riscv/cv1800b_milkv_duo_spinand.dts
@@ -0,0 +1,39 @@
+/dts-v1/;
+#include "cv180x_base_riscv.dtsi"
+#include "cv180x_asic_qfn.dtsi"
+#include "cv180x_asic_spinand.dtsi"
+#include "cv180x_default_memmap.dtsi"
+
+&mipi_rx{
+ snsr-reset = <&portc 8 GPIO_ACTIVE_LOW>, <&portc 8 GPIO_ACTIVE_LOW>, <&portc 8 GPIO_ACTIVE_LOW>;
+};
+
+&spi0 {
+ status = "okay";
+ flash@0 {
+ compatible = "winbond,w25n01", "spi-nand";
+ reg = <0>;
+ };
+};
+
+
+&spi2 {
+ status = "okay";
+
+ spidev@0 {
+ status = "okay";
+ };
+};
+
+&uart4 {
+ status = "okay";
+};
+
+&i2c1 {
+ status = "okay";
+ clock-frequency = <100000>;
+};
+
+/ {
+
+};
diff --git a/build/boards/cv180x/cv1800b_milkv_duo_spinand/linux/cvitek_cv1800b_milkv_duo_spinand_defconfig b/build/boards/cv180x/cv1800b_milkv_duo_spinand/linux/cvitek_cv1800b_milkv_duo_spinand_defconfig
new file mode 100644
index 000000000..2368dcb85
--- /dev/null
+++ b/build/boards/cv180x/cv1800b_milkv_duo_spinand/linux/cvitek_cv1800b_milkv_duo_spinand_defconfig
@@ -0,0 +1,271 @@
+# CONFIG_SWAP is not set
+CONFIG_SYSVIPC=y
+CONFIG_POSIX_MQUEUE=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_PREEMPT=y
+CONFIG_IKCONFIG=n
+CONFIG_IKCONFIG_PROC=n
+CONFIG_LOG_BUF_SHIFT=15
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+# CONFIG_SYSFS_SYSCALL is not set
+# CONFIG_FHANDLE is not set
+# CONFIG_BUG is not set
+# CONFIG_BASE_FULL is not set
+# CONFIG_EPOLL is not set
+# CONFIG_SIGNALFD is not set
+# CONFIG_TIMERFD is not set
+# CONFIG_AIO is not set
+# CONFIG_IO_URING is not set
+# CONFIG_ADVISE_SYSCALLS is not set
+CONFIG_EMBEDDED=y
+# CONFIG_SLUB_DEBUG is not set
+CONFIG_FORCE_MAX_ZONEORDER=10
+CONFIG_ARCH_CVITEK=y
+CONFIG_SOC_THEAD=y
+# CONFIG_RISCV_SWIOTLB is not set
+CONFIG_VECTOR=y
+CONFIG_VECTOR_0_7=y
+# CONFIG_COMPAT is not set
+CONFIG_ARCH_CV180X=y
+CONFIG_ARCH_CVITEK_CHIP="cv180x"
+CONFIG_ARCH_CV180X_ASIC=y
+CONFIG_COMPAT_32BIT_TIME=y
+# CONFIG_STRICT_KERNEL_RWX is not set
+CONFIG_MODULES=y
+CONFIG_MODULE_FORCE_LOAD=y
+CONFIG_MODULE_UNLOAD=y
+CONFIG_BLOCK=y
+CONFIG_BLK_SCSI_REQUEST=y
+# CONFIG_BLK_DEV_BSG is not set
+# CONFIG_MQ_IOSCHED_DEADLINE is not set
+# CONFIG_MQ_IOSCHED_KYBER is not set
+# CONFIG_COREDUMP is not set
+CONFIG_CMA=y
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_INET=y
+CONFIG_IP_MULTICAST=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+# CONFIG_INET_DIAG is not set
+CONFIG_IPV6_ROUTER_PREF=y
+CONFIG_IPV6_ROUTE_INFO=y
+CONFIG_IPV6_OPTIMISTIC_DAD=y
+# CONFIG_IPV6_SIT is not set
+CONFIG_IPV6_MROUTE=y
+CONFIG_CFG80211=y
+# CONFIG_CFG80211_CRDA_SUPPORT is not set
+CONFIG_CFG80211_WEXT=y
+CONFIG_MAC80211=y
+CONFIG_RFKILL=y
+CONFIG_UEVENT_HELPER=y
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+# CONFIG_ALLOW_DEV_COREDUMP is not set
+CONFIG_MTD=y
+CONFIG_MTD_CMDLINE_PARTS=y
+# CONFIG_MTD_OF_PARTS is not set
+CONFIG_MTD_BLOCK=y
+CONFIG_MTD_RAW_NAND=y
+CONFIG_MTD_NAND_CVSNFC=y
+CONFIG_MTD_SPI_NOR=y
+CONFIG_SPI_CVI_SPIF=y
+CONFIG_SCSI=y
+CONFIG_SCSI_DMA=y
+CONFIG_SCSI_PROC_FS=y
+CONFIG_BLK_DEV_SD=y
+CONFIG_SCSI_LOWLEVEL=y
+CONFIG_MTD_UBI=y
+CONFIG_MTD_UBI_BLOCK=y
+CONFIG_NETDEVICES=y
+# CONFIG_NET_CORE is not set
+# CONFIG_NET_VENDOR_ALACRITECH is not set
+# CONFIG_NET_VENDOR_AMAZON is not set
+# CONFIG_NET_VENDOR_AQUANTIA is not set
+# CONFIG_NET_VENDOR_ARC is not set
+# CONFIG_NET_VENDOR_AURORA is not set
+# CONFIG_NET_VENDOR_BROADCOM is not set
+# CONFIG_NET_VENDOR_CADENCE is not set
+# CONFIG_NET_VENDOR_CAVIUM is not set
+# CONFIG_NET_VENDOR_CORTINA is not set
+# CONFIG_NET_VENDOR_EZCHIP is not set
+# CONFIG_NET_VENDOR_HUAWEI is not set
+# CONFIG_NET_VENDOR_INTEL is not set
+# CONFIG_NET_VENDOR_MARVELL is not set
+# CONFIG_NET_VENDOR_MICREL is not set
+# CONFIG_NET_VENDOR_MICROCHIP is not set
+# CONFIG_NET_VENDOR_MICROSEMI is not set
+# CONFIG_NET_VENDOR_NATSEMI is not set
+# CONFIG_NET_VENDOR_NETRONOME is not set
+# CONFIG_NET_VENDOR_NI is not set
+# CONFIG_NET_VENDOR_QUALCOMM is not set
+# CONFIG_NET_VENDOR_RENESAS is not set
+# CONFIG_NET_VENDOR_ROCKER is not set
+# CONFIG_NET_VENDOR_SAMSUNG is not set
+# CONFIG_NET_VENDOR_SEEQ is not set
+# CONFIG_NET_VENDOR_SOLARFLARE is not set
+# CONFIG_NET_VENDOR_SOCIONEXT is not set
+CONFIG_STMMAC_ETH=y
+# CONFIG_DWMAC_GENERIC is not set
+# CONFIG_NET_VENDOR_SYNOPSYS is not set
+# CONFIG_NET_VENDOR_VIA is not set
+# CONFIG_NET_VENDOR_WIZNET is not set
+# CONFIG_USB_NET_DRIVERS is not set
+# CONFIG_WLAN_VENDOR_ADMTEK is not set
+# CONFIG_WLAN_VENDOR_ATH is not set
+# CONFIG_WLAN_VENDOR_ATMEL is not set
+# CONFIG_WLAN_VENDOR_BROADCOM is not set
+# CONFIG_WLAN_VENDOR_CISCO is not set
+# CONFIG_WLAN_VENDOR_INTEL is not set
+# CONFIG_WLAN_VENDOR_INTERSIL is not set
+# CONFIG_WLAN_VENDOR_MARVELL is not set
+# CONFIG_WLAN_VENDOR_MEDIATEK is not set
+# CONFIG_WLAN_VENDOR_MICROCHIP is not set
+# CONFIG_WLAN_VENDOR_RALINK is not set
+# CONFIG_WLAN_VENDOR_REALTEK is not set
+# CONFIG_WLAN_VENDOR_RSI is not set
+# CONFIG_WLAN_VENDOR_ST is not set
+# CONFIG_WLAN_VENDOR_TI is not set
+# CONFIG_WLAN_VENDOR_ZYDAS is not set
+# CONFIG_WLAN_VENDOR_QUANTENNA is not set
+# CONFIG_WLAN_VENDOR_ICOMMSEMI is not set
+# CONFIG_WLAN_VENDOR_AICSEMI is not set
+# CONFIG_VT is not set
+# CONFIG_LEGACY_PTYS is not set
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_NR_UARTS=5
+CONFIG_SERIAL_8250_RUNTIME_UARTS=5
+CONFIG_SERIAL_8250_DW=y
+CONFIG_SERIAL_EARLYCON_RISCV_SBI=y
+CONFIG_HW_RANDOM=y
+CONFIG_I2C=y
+CONFIG_I2C_CHARDEV=y
+CONFIG_I2C_MUX=y
+CONFIG_I2C_DESIGNWARE_PLATFORM=y
+CONFIG_SPI=y
+# CONFIG_PTP_1588_CLOCK is not set
+CONFIG_PINCTRL=y
+CONFIG_CVITEK_PINCTRL_CV1835=y
+CONFIG_GPIOLIB=y
+CONFIG_GPIO_SYSFS=y
+CONFIG_GPIO_DWAPB=y
+CONFIG_POWER_RESET=y
+CONFIG_THERMAL=y
+CONFIG_THERMAL_NETLINK=y
+CONFIG_THERMAL_WRITABLE_TRIPS=y
+CONFIG_THERMAL_EMULATION=y
+CONFIG_CV180X_THERMAL=m
+CONFIG_WATCHDOG=y
+CONFIG_MEDIA_SUPPORT=n
+CONFIG_VIDEO_V4L2_SUBDEV_API=n
+# CONFIG_DVB_NET is not set
+# CONFIG_DVB_DYNAMIC_MINORS is not set
+CONFIG_V4L_PLATFORM_DRIVERS=n
+CONFIG_V4L_MEM2MEM_DRIVERS=n
+CONFIG_VIDEO_MEM2MEM_DEINTERLACE=n
+CONFIG_VIDEO_CVITEK_CIF=m
+CONFIG_VIDEO_CVITEK_SNS_I2C=m
+CONFIG_FB=y
+CONFIG_FB_CVITEK=m
+CONFIG_FB_TFT=y
+CONFIG_FB_TFT_SSD1306=m
+CONFIG_SOUND=y
+CONFIG_SND=y
+# CONFIG_SND_SUPPORT_OLD_API is not set
+# CONFIG_SND_PROC_FS is not set
+# CONFIG_SND_DRIVERS is not set
+CONFIG_SND_HDA_PREALLOC_SIZE=1
+# CONFIG_SND_SPI is not set
+# CONFIG_SND_USB is not set
+CONFIG_SND_SOC=y
+CONFIG_SND_SOC_CV182XA_CV182XAADC=y
+CONFIG_SND_SOC_CV182XA_CV182XADAC=y
+CONFIG_SND_CV1835_I2S=y
+CONFIG_SND_SOC_CV182XAADC=y
+CONFIG_SND_SOC_CV182XADAC=y
+CONFIG_SND_SOC_CV1835_USE_AUDIO_PLL=y
+CONFIG_CV1835_I2S_SUBSYS=y
+CONFIG_USB=y
+CONFIG_USB_STORAGE=y
+CONFIG_USB_DWC2=y
+CONFIG_USB_GADGET=y
+CONFIG_USB_LIBCOMPOSITE=y
+CONFIG_USB_F_ACM=y
+CONFIG_USB_U_SERIAL=y
+CONFIG_USB_U_ETHER=y
+CONFIG_USB_U_AUDIO=y
+CONFIG_USB_F_SERIAL=y
+CONFIG_USB_F_ECM=y
+CONFIG_USB_F_EEM=y
+CONFIG_USB_F_RNDIS=y
+CONFIG_USB_F_MASS_STORAGE=y
+CONFIG_USB_F_FS=y
+CONFIG_USB_F_UAC1=y
+CONFIG_USB_F_UVC=y
+CONFIG_USB_CONFIGFS=y
+CONFIG_USB_CONFIGFS_SERIAL=y
+CONFIG_USB_CONFIGFS_RNDIS=y
+CONFIG_USB_CONFIGFS_ACM=y
+CONFIG_USB_ROLE_SWITCH=y
+CONFIG_MMC=y
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_PLTFM=y
+CONFIG_MMC_SDHCI_CVI=y
+CONFIG_RTC_CLASS=y
+CONFIG_DMADEVICES=y
+CONFIG_DW_DMAC_CVITEK=y
+# CONFIG_VIRTIO_MENU is not set
+CONFIG_STAGING=y
+CONFIG_ION=y
+CONFIG_ION_SYSTEM_HEAP=y
+CONFIG_ION_CARVEOUT_HEAP=y
+CONFIG_ION_CMA_HEAP=y
+# CONFIG_IOMMU_SUPPORT is not set
+CONFIG_CV1835_SYSDMA_REMAP=y
+CONFIG_CVI_MAILBOX=y
+CONFIG_PWM=y
+CONFIG_SIFIVE_PLIC=y
+CONFIG_ANDROID=y
+CONFIG_EXT3_FS=y
+CONFIG_EXT4_DEBUG=y
+# CONFIG_MANDATORY_FILE_LOCKING is not set
+CONFIG_VFAT_FS=y
+# CONFIG_PROC_PAGE_MONITOR is not set
+CONFIG_TMPFS=y
+CONFIG_JFFS2_FS=y
+CONFIG_JFFS2_FS_WBUF_VERIFY=y
+CONFIG_UBIFS_FS=y
+CONFIG_SQUASHFS=y
+CONFIG_SQUASHFS_XZ=y
+CONFIG_NFS_FS=y
+CONFIG_NFS_V4=y
+CONFIG_ROOT_NFS=y
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_ISO8859_1=y
+CONFIG_NLS_ISO8859_2=y
+CONFIG_NLS_ISO8859_3=y
+CONFIG_CRYPTO_ECDH=y
+CONFIG_CRYPTO_ECB=y
+CONFIG_CRYPTO_SHA256=y
+# CONFIG_CRYPTO_HW is not set
+# CONFIG_XZ_DEC_X86 is not set
+# CONFIG_XZ_DEC_POWERPC is not set
+# CONFIG_XZ_DEC_IA64 is not set
+# CONFIG_XZ_DEC_ARMTHUMB is not set
+# CONFIG_XZ_DEC_SPARC is not set
+CONFIG_DMA_CMA=y
+CONFIG_CMA_SIZE_MBYTES=0
+CONFIG_PRINTK_TIME=y
+CONFIG_DYNAMIC_DEBUG=y
+# CONFIG_ENABLE_MUST_CHECK is not set
+# CONFIG_FRAME_POINTER is not set
+CONFIG_DEBUG_FS=y
+# CONFIG_DEBUG_MISC is not set
+# CONFIG_SCHED_DEBUG is not set
+# CONFIG_DEBUG_PREEMPT is not set
+# CONFIG_FTRACE is not set
+# CONFIG_RUNTIME_TESTING_MENU is not set
diff --git a/build/boards/cv180x/cv1800b_milkv_duo_spinand/memmap.py b/build/boards/cv180x/cv1800b_milkv_duo_spinand/memmap.py
new file mode 100644
index 000000000..84161267a
--- /dev/null
+++ b/build/boards/cv180x/cv1800b_milkv_duo_spinand/memmap.py
@@ -0,0 +1,82 @@
+SIZE_1M = 0x100000
+SIZE_1K = 1024
+
+
+# Only attributes in class MemoryMap are generated to .h
+class MemoryMap:
+ # No prefix "CVIMMAP_" for the items in _no_prefix[]
+ _no_prefix = [
+ "CONFIG_SYS_TEXT_BASE" # u-boot's CONFIG_SYS_TEXT_BASE is used without CPP.
+ ]
+
+ DRAM_BASE = 0x80000000
+ DRAM_SIZE = 64 * SIZE_1M
+
+ # ==============
+ # C906L FreeRTOS
+ # ==============
+ FREERTOS_SIZE = 768 * SIZE_1K
+ # FreeRTOS is at the end of DRAM
+ FREERTOS_ADDR = DRAM_BASE + DRAM_SIZE - FREERTOS_SIZE
+ FSBL_C906L_START_ADDR = FREERTOS_ADDR
+
+ # ==============================
+ # OpenSBI | arm-trusted-firmware
+ # ==============================
+ # Monitor is at the begining of DRAM
+ MONITOR_ADDR = DRAM_BASE
+
+ ATF_SIZE = 512 * SIZE_1K
+ OPENSBI_SIZE = 512 * SIZE_1K
+ OPENSBI_FDT_ADDR = MONITOR_ADDR + OPENSBI_SIZE
+
+ # =========================
+ # memory@DRAM_BASE in .dts.
+ # =========================
+ # Ignore the area of FreeRTOS in u-boot and kernel
+ KERNEL_MEMORY_ADDR = DRAM_BASE
+ KERNEL_MEMORY_SIZE = DRAM_SIZE - FREERTOS_SIZE
+
+ # =================
+ # Multimedia buffer. Used by u-boot/kernel/FreeRTOS
+ # =================
+ ION_SIZE = 26.80078125 * SIZE_1M
+ H26X_BITSTREAM_SIZE = 0 * SIZE_1M
+ H26X_ENC_BUFF_SIZE = 0
+ ISP_MEM_BASE_SIZE = 0 * SIZE_1M
+ BOOTLOGO_SIZE = 0 * SIZE_1M
+ FREERTOS_RESERVED_ION_SIZE = H26X_BITSTREAM_SIZE + H26X_ENC_BUFF_SIZE + ISP_MEM_BASE_SIZE + BOOTLOGO_SIZE
+
+ # ION after FreeRTOS
+ ION_ADDR = FREERTOS_ADDR - ION_SIZE
+
+ # Buffers of the fast image are inside the ION buffer
+ H26X_BITSTREAM_ADDR = ION_ADDR
+ H26X_ENC_BUFF_ADDR = H26X_BITSTREAM_ADDR + H26X_BITSTREAM_SIZE
+ ISP_MEM_BASE_ADDR = H26X_ENC_BUFF_ADDR + H26X_ENC_BUFF_SIZE
+
+ # Boot logo is after ISP buffer and inside the ION buffer
+ BOOTLOGO_ADDR = ISP_MEM_BASE_ADDR + ISP_MEM_BASE_SIZE
+
+ assert BOOTLOGO_ADDR + BOOTLOGO_SIZE <= ION_ADDR + ION_SIZE
+
+ # ===================
+ # FSBL and u-boot-2021
+ # ===================
+ CVI_UPDATE_HEADER_SIZE = SIZE_1K
+ UIMAG_SIZE = 15 * SIZE_1M
+
+ # kernel image loading buffer
+ UIMAG_ADDR = DRAM_BASE + 20 * SIZE_1M
+ CVI_UPDATE_HEADER_ADDR = UIMAG_ADDR - CVI_UPDATE_HEADER_SIZE
+
+ # FSBL decompress buffer
+ FSBL_UNZIP_ADDR = UIMAG_ADDR
+ FSBL_UNZIP_SIZE = UIMAG_SIZE
+
+ assert UIMAG_ADDR + UIMAG_SIZE <= ION_ADDR
+
+ # u-boot's run address and entry point
+ CONFIG_SYS_TEXT_BASE = DRAM_BASE + 2 * SIZE_1M
+ # u-boot's init stack point is only used before board_init_f()
+ CONFIG_SYS_INIT_SP_ADDR = UIMAG_ADDR + UIMAG_SIZE
diff --git a/build/boards/cv180x/cv1800b_milkv_duo_spinand/partition/partition_spinand.xml b/build/boards/cv180x/cv1800b_milkv_duo_spinand/partition/partition_spinand.xml
new file mode 100644
index 000000000..41f62f4c6
--- /dev/null
+++ b/build/boards/cv180x/cv1800b_milkv_duo_spinand/partition/partition_spinand.xml
@@ -0,0 +1,10 @@
+
+
+
+
+
+
+
+
+
+
diff --git a/build/boards/cv180x/cv1800b_milkv_duo_spinand/rootfs_script/clean_rootfs.sh b/build/boards/cv180x/cv1800b_milkv_duo_spinand/rootfs_script/clean_rootfs.sh
new file mode 100755
index 000000000..85bf2408f
--- /dev/null
+++ b/build/boards/cv180x/cv1800b_milkv_duo_spinand/rootfs_script/clean_rootfs.sh
@@ -0,0 +1,30 @@
+#!/bin/bash
+
+SYSTEM_DIR=$1
+rm -rf $SYSTEM_DIR/mnt/system/usr
+rm -rf $SYSTEM_DIR/mnt/system/lib
+
+rm -rf $SYSTEM_DIR/etc/init.d/S01syslogd
+rm -rf $SYSTEM_DIR/etc/init.d/S02klogd
+rm -rf $SYSTEM_DIR/etc/init.d/S02sysctl
+rm -rf $SYSTEM_DIR/etc/init.d/S20urandom
+rm -rf $SYSTEM_DIR/etc/init.d/S40network
+rm -rf $SYSTEM_DIR/etc/init.d/S23ntp
+
+rm -rf $SYSTEM_DIR/bin/ntpd
+rm -rf $SYSTEM_DIR/mnt/cfg/secure.img
+
+#del cv181x_mipi_tx.ko
+rm -rf $SYSTEM_DIR/mnt/system/ko/cv181x_mipi_tx.ko
+sed -i "/cv181x_mipi_tx.ko/d" $SYSTEM_DIR/mnt/system/ko/loadsystemko.sh
+
+if [ $BUILD_FOR_DEBUG != "y" ]
+then
+#del dmesg cmd if CONFIG_PRINTK=n
+#sed -i "/dmesg/d" $SYSTEM_DIR/mnt/system/ko/loadsystemko.sh
+
+#del debugfs node
+sed -i "/debugfs/d" $SYSTEM_DIR/etc/fstab
+fi
+
+du -sh $SYSTEM_DIR/* |sort -rh
diff --git a/build/boards/cv180x/cv1800b_milkv_duo_spinand/u-boot/cvi_board_init.c b/build/boards/cv180x/cv1800b_milkv_duo_spinand/u-boot/cvi_board_init.c
new file mode 100644
index 000000000..92fdc9bf7
--- /dev/null
+++ b/build/boards/cv180x/cv1800b_milkv_duo_spinand/u-boot/cvi_board_init.c
@@ -0,0 +1,45 @@
+int cvi_board_init(void)
+{
+ // sensor mclk reset
+ PINMUX_CONFIG(PAD_MIPIRX0P, CAM_MCLK0); // Camera MCLK0
+ PINMUX_CONFIG(PAD_MIPIRX1N, XGPIOC_8); // Camera Reset
+
+ // all default gpio
+ PINMUX_CONFIG(SD0_PWR_EN, XGPIOA_14); // Duo Pin 19
+ PINMUX_CONFIG(SPK_EN, XGPIOA_15); // Duo Pin 20
+ //PINMUX_CONFIG(SPINOR_MISO, XGPIOA_23); // Duo Pin 21
+ //PINMUX_CONFIG(SPINOR_CS_X, XGPIOA_24); // Duo Pin 22
+ //PINMUX_CONFIG(SPINOR_SCK, XGPIOA_22); // Duo Pin 24
+ //PINMUX_CONFIG(SPINOR_MOSI, XGPIOA_25); // Duo Pin 25
+ //PINMUX_CONFIG(SPINOR_WP_X, XGPIOA_27); // Duo Pin 26
+ //PINMUX_CONFIG(SPINOR_HOLD_X, XGPIOA_26); // Duo Pin 27
+ PINMUX_CONFIG(PWR_SEQ2, PWR_GPIO_4); // Duo Pin 29
+
+ // ADC pins set to gpio
+ PINMUX_CONFIG(ADC1, XGPIOB_3); // ADC1
+ PINMUX_CONFIG(USB_VBUS_DET, XGPIOB_6); // ADC2
+
+ // I2C0
+ PINMUX_CONFIG(IIC0_SCL, IIC0_SCL);
+ PINMUX_CONFIG(IIC0_SDA, IIC0_SDA);
+
+ // I2C1
+ PINMUX_CONFIG(PAD_MIPIRX1P, IIC1_SDA);
+ PINMUX_CONFIG(PAD_MIPIRX0N, IIC1_SCL);
+
+ // PWM
+ PINMUX_CONFIG(SD1_D2, PWM_5);
+ PINMUX_CONFIG(SD1_D1, PWM_6);
+
+ // UART 4
+ PINMUX_CONFIG(SD1_GPIO1, UART4_TX);
+ PINMUX_CONFIG(SD1_GPIO0, UART4_RX);
+
+ // SPI
+ PINMUX_CONFIG(SD1_CLK, SPI2_SCK);
+ PINMUX_CONFIG(SD1_CMD, SPI2_SDO);
+ PINMUX_CONFIG(SD1_D0, SPI2_SDI);
+ PINMUX_CONFIG(SD1_D3, SPI2_CS_X);
+
+ return 0;
+}
diff --git a/build/boards/cv180x/cv1800b_milkv_duo_spinand/u-boot/cvitek.h b/build/boards/cv180x/cv1800b_milkv_duo_spinand/u-boot/cvitek.h
new file mode 100644
index 000000000..d515dc254
--- /dev/null
+++ b/build/boards/cv180x/cv1800b_milkv_duo_spinand/u-boot/cvitek.h
@@ -0,0 +1,13 @@
+/*
+ *VO control GPIOs
+ */
+#define VO_GPIO_RESET_PORT portb
+#define VO_GPIO_RESET_INDEX 5
+#define VO_GPIO_RESET_ACTIVE GPIO_ACTIVE_LOW
+#define VO_GPIO_PWM_PORT portb
+#define VO_GPIO_PWM_INDEX 4
+#define VO_GPIO_PWM_ACTIVE GPIO_ACTIVE_HIGH
+#define VO_GPIO_POWER_CT_PORT portb
+#define VO_GPIO_POWER_CT_INDEX 3
+#define VO_GPIO_POWER_CT_ACTIVE GPIO_ACTIVE_HIGH
+
diff --git a/build/boards/cv180x/cv1800b_milkv_duo_spinand/u-boot/cvitek_cv1800b_milkv_duo_spinand_defconfig b/build/boards/cv180x/cv1800b_milkv_duo_spinand/u-boot/cvitek_cv1800b_milkv_duo_spinand_defconfig
new file mode 100644
index 000000000..01119253f
--- /dev/null
+++ b/build/boards/cv180x/cv1800b_milkv_duo_spinand/u-boot/cvitek_cv1800b_milkv_duo_spinand_defconfig
@@ -0,0 +1,50 @@
+CONFIG_RISCV=y
+CONFIG_SYS_MALLOC_F_LEN=0x2000
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_DEFAULT_DEVICE_TREE="cv180x_asic"
+CONFIG_IDENT_STRING=" cvitek_cv180x"
+CONFIG_ARCH_RV64I=y
+CONFIG_RISCV_SMODE=y
+CONFIG_TARGET_CVITEK_CV180X=y
+CONFIG_DISTRO_DEFAULTS=y
+CONFIG_FIT=y
+# CONFIG_ARCH_FIXUP_FDT_MEMORY is not set
+CONFIG_BOOTDELAY=1
+CONFIG_SYS_PROMPT="cv180x_c906# "
+# CONFIG_CMD_CONSOLE is not set
+# CONFIG_CMD_XIMG is not set
+# CONFIG_CMD_EDITENV is not set
+# CONFIG_CMD_CRC32 is not set
+# CONFIG_CMD_LZMADEC is not set
+# CONFIG_CMD_UNLZ4 is not set
+# CONFIG_CMD_UNZIP is not set
+# CONFIG_CMD_LOADS is not set
+CONFIG_CMD_MMC=y
+# CONFIG_CMD_ITEST is not set
+CONFIG_CMD_CACHE=y
+CONFIG_CMD_CVI_SD_UPDATE=y
+# CONFIG_ISO_PARTITION is not set
+# CONFIG_EFI_PARTITION is not set
+CONFIG_NET_RANDOM_ETHADDR=y
+CONFIG_MMC=y
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_SDMA=y
+CONFIG_MMC_SDHCI_CVITEK=y
+CONFIG_MTD=y
+# CONFIG_SPI_FLASH is not set
+# CONFIG_PHY_SMSC is not set
+CONFIG_DM_ETH=y
+CONFIG_ETH_DESIGNWARE=y
+CONFIG_PHY_CVITEK=y
+CONFIG_SYS_NS16550=y
+CONFIG_SPI=y
+CONFIG_LZ4=y
+CONFIG_LZMA=y
+# CONFIG_TOOLS_LIBCRYPTO is not set
+# CONFIG_SPI_FLASH_USE_4K_SECTORS is not set
+CONFIG_NAND_BOOT=y
+CONFIG_NAND_SUPPORT=y
+CONFIG_MTD_RAW_NAND=y
+CONFIG_NAND_FLASH_CVSNFC_V3=y
+CONFIG_ENV_IS_IN_NAND=y
+
diff --git a/build/milkvsetup.sh b/build/milkvsetup.sh
index 7b7e9e1f4..63d9f89bd 100644
--- a/build/milkvsetup.sh
+++ b/build/milkvsetup.sh
@@ -529,19 +529,19 @@ function cvi_setup_env()
# envs setup for specific ${SDK_VER}
envs_sdk_ver
- if [ "${STORAGE_TYPE}" == "spinand" ]; then
- PAGE_SUFFIX=2k
- if [ ${NANDFLASH_PAGESIZE} == 4096 ]; then
- PAGE_SUFFIX=4k
- fi
+# if [ "${STORAGE_TYPE}" == "spinand" ]; then
+# PAGE_SUFFIX=2k
+# if [ ${NANDFLASH_PAGESIZE} == 4096 ]; then
+# PAGE_SUFFIX=4k
+# fi
- if [[ "$ENABLE_ALIOS" != "y" ]]; then
- pushd "$BUILD_PATH"/boards/"${CHIP_ARCH,,}"/"$PROJECT_FULLNAME"/partition/
- ln -fs ../../../default/partition/partition_spinand_page_"$PAGE_SUFFIX".xml \
- partition_"$STORAGE_TYPE".xml
- popd
- fi
- fi
+# if [[ "$ENABLE_ALIOS" != "y" ]]; then
+# pushd "$BUILD_PATH"/boards/"${CHIP_ARCH,,}"/"$PROJECT_FULLNAME"/partition/
+# ln -fs ../../../default/partition/partition_spinand_page_"$PAGE_SUFFIX".xml \
+# partition_"$STORAGE_TYPE".xml
+# popd
+# fi
+# fi
# configure flash partition table
if [ -z "${STORAGE_TYPE}" ]; then
diff --git a/buildroot-2021.05/configs/milkv-duo-spinand_musl_riscv64_defconfig b/buildroot-2021.05/configs/milkv-duo-spinand_musl_riscv64_defconfig
new file mode 100644
index 000000000..04652d926
--- /dev/null
+++ b/buildroot-2021.05/configs/milkv-duo-spinand_musl_riscv64_defconfig
@@ -0,0 +1,41 @@
+BR2_riscv=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX="riscv64-unknown-linux-musl"
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_5_10=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_MUSL=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
+BR2_TARGET_LDFLAGS="-mcpu=c906fdv -march=rv64imafdcv0p7xthead -mcmodel=medany -mabi=lp64d"
+BR2_TARGET_GENERIC_HOSTNAME="milkv-duo"
+BR2_TARGET_GENERIC_ISSUE="Welcome to Milk-V Duo"
+BR2_TARGET_GENERIC_ROOT_PASSWD="milkv"
+BR2_ROOTFS_OVERLAY="board/milkv/milkv-duo-spinand/overlay"
+BR2_PACKAGE_DUO_PINMUX=y
+BR2_PACKAGE_SPIDEV_TEST=y
+BR2_PACKAGE_STRACE=y
+BR2_PACKAGE_E2FSPROGS=y
+BR2_PACKAGE_E2FSPROGS_RESIZE2FS=y
+BR2_PACKAGE_MTD=y
+BR2_PACKAGE_EVTEST=y
+BR2_PACKAGE_OPENSSL=y
+BR2_PACKAGE_FREETYPE=y
+BR2_PACKAGE_EXPAT=y
+BR2_PACKAGE_JSON_C=y
+BR2_PACKAGE_LIBXSLT=y
+BR2_PACKAGE_LIBNL=y
+BR2_PACKAGE_LIBFFI=y
+BR2_PACKAGE_DHCPCD=y
+BR2_PACKAGE_DNSMASQ=y
+BR2_PACKAGE_DROPBEAR=y
+BR2_PACKAGE_ETHTOOL=y
+BR2_PACKAGE_IPERF3=y
+BR2_PACKAGE_NTP=y
+BR2_PACKAGE_NTP_NTPDATE=y
+BR2_PACKAGE_NTP_NTPTIME=y
+BR2_PACKAGE_HTOP=y
+BR2_PACKAGE_KMOD=y
+BR2_PACKAGE_UTIL_LINUX_UUIDD=y
+BR2_TARGET_ROOTFS_SQUASHFS=y
+BR2_TARGET_ROOTFS_SQUASHFS4_XZ=y
+# BR2_TARGET_ROOTFS_TAR is not set
+BR2_PACKAGE_HOST_E2FSPROGS=y
+BR2_PACKAGE_HOST_GENIMAGE=y
diff --git a/device/milkv-duo-spinand/boardconfig.sh b/device/milkv-duo-spinand/boardconfig.sh
new file mode 100644
index 000000000..cce52961b
--- /dev/null
+++ b/device/milkv-duo-spinand/boardconfig.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+export MV_BOARD=milkv-duo-spinand
+export MV_BOARD_CPU=cv1800b
+export MV_VENDOR=milkv
+export MV_BUILD_ENV=milkvsetup.sh
+export MV_BOARD_LINK=cv1800b_milkv_duo_spinand
+
diff --git a/device/milkv-duo-spinand/br_overlay/.gitignore b/device/milkv-duo-spinand/br_overlay/.gitignore
new file mode 100644
index 000000000..f89c6b2d5
--- /dev/null
+++ b/device/milkv-duo-spinand/br_overlay/.gitignore
@@ -0,0 +1,6 @@
+mnt/system/
+mnt/cfg/
+mnt/data/
+usr/bin
+usr/share
+usr/lib
diff --git a/device/milkv-duo-spinand/br_overlay/etc/dnsmasq.conf b/device/milkv-duo-spinand/br_overlay/etc/dnsmasq.conf
new file mode 100644
index 000000000..fcdb620ff
--- /dev/null
+++ b/device/milkv-duo-spinand/br_overlay/etc/dnsmasq.conf
@@ -0,0 +1,4 @@
+interface=usb0
+dhcp-range=192.168.42.2,192.168.42.242,1h
+dhcp-option=3
+dhcp-option=6
diff --git a/device/milkv-duo-spinand/br_overlay/etc/init.d/S99user b/device/milkv-duo-spinand/br_overlay/etc/init.d/S99user
new file mode 100755
index 000000000..32b524845
--- /dev/null
+++ b/device/milkv-duo-spinand/br_overlay/etc/init.d/S99user
@@ -0,0 +1,50 @@
+#!/bin/sh
+${CVI_SHOPTS}
+#
+# Start firmware
+#
+export USERDATAPATH=/mnt/data/
+export SYSTEMPATH=/mnt/system/
+
+case "$1" in
+ start)
+ echo "init mpp system..."
+ if [ -d $SYSTEMPATH/ko ]; then
+ sh $SYSTEMPATH/ko/loadsystemko.sh
+ fi
+
+ echo "Starting app..."
+
+ if [ -f $SYSTEMPATH/duo-init.sh ]; then
+ . $SYSTEMPATH/duo-init.sh &
+ fi
+
+ if [ -f $SYSTEMPATH/blink.sh ]; then
+ . $SYSTEMPATH/blink.sh &
+ fi
+
+ if [ -f $SYSTEMPATH/usb.sh ]; then
+ . $SYSTEMPATH/usb.sh &
+ fi
+
+ if [ -f $USERDATAPATH/auto.sh ]; then
+ usleep 30000
+ . $USERDATAPATH/auto.sh &
+ exit 1
+ fi
+ if [ -f $SYSTEMPATH/auto.sh ]; then
+ usleep 30000
+ . $SYSTEMPATH/auto.sh &
+ fi
+ ;;
+ stop)
+ ;;
+ restart|reload)
+ ;;
+ *)
+ echo "Usage: $0 {start|stop|restart}"
+ exit 1
+esac
+
+exit $?
+
diff --git a/device/milkv-duo-spinand/br_overlay/etc/inittab b/device/milkv-duo-spinand/br_overlay/etc/inittab
new file mode 100644
index 000000000..2c9793ce9
--- /dev/null
+++ b/device/milkv-duo-spinand/br_overlay/etc/inittab
@@ -0,0 +1,40 @@
+# /etc/inittab
+#
+# Copyright (C) 2001 Erik Andersen
+#
+# Note: BusyBox init doesn't support runlevels. The runlevels field is
+# completely ignored by BusyBox init. If you want runlevels, use
+# sysvinit.
+#
+# Format for each entry: :::
+#
+# id == tty to run on, or empty for /dev/console
+# runlevels == ignored
+# action == one of sysinit, respawn, askfirst, wait, and once
+# process == program to run
+
+# Startup the system
+::sysinit:/bin/mount -t proc proc /proc
+::sysinit:/bin/mount -o remount,rw /
+::sysinit:/bin/mkdir -p /dev/pts /dev/shm
+::sysinit:/bin/mount -a
+::sysinit:/sbin/swapon -a
+null::sysinit:/bin/ln -sf /proc/self/fd /dev/fd
+null::sysinit:/bin/ln -sf /proc/self/fd/0 /dev/stdin
+null::sysinit:/bin/ln -sf /proc/self/fd/1 /dev/stdout
+null::sysinit:/bin/ln -sf /proc/self/fd/2 /dev/stderr
+::sysinit:/bin/hostname -F /etc/hostname
+# now run any rc scripts
+::sysinit:/etc/init.d/rcS
+
+# Put a getty on the serial port
+# console::respawn:/sbin/getty -L console 0 vt100 # GENERIC_SERIAL
+console::respawn:/sbin/getty -L console 115200 vt100 -n -l /usr/local/bin/autologin
+
+# Stuff to do for the 3-finger salute
+#::ctrlaltdel:/sbin/reboot
+
+# Stuff to do before rebooting
+::shutdown:/etc/init.d/rcK
+::shutdown:/sbin/swapoff -a
+::shutdown:/bin/umount -a -r
diff --git a/device/milkv-duo-spinand/br_overlay/etc/profile b/device/milkv-duo-spinand/br_overlay/etc/profile
new file mode 100644
index 000000000..d99b37863
--- /dev/null
+++ b/device/milkv-duo-spinand/br_overlay/etc/profile
@@ -0,0 +1,37 @@
+export PATH="/bin:/sbin:/usr/bin:/usr/sbin"
+export PATH="/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/mnt/system/usr/bin:/mnt/system/usr/sbin:/mnt/data/bin:/mnt/data/sbin"
+
+if [ "$PS1" ]; then
+ if [ "`id -u`" -eq 0 ]; then
+ export PS1='# '
+ else
+ export PS1='$ '
+ fi
+fi
+
+export PAGER='/bin/more '
+export EDITOR='/bin/vi'
+
+# Source configuration files from /etc/profile.d
+for i in /etc/profile.d/*.sh ; do
+ if [ -r "$i" ]; then
+ . $i
+ fi
+ unset i
+done
+
+export HOSTNAME="$(hostname)"
+export OLDPWD=/root
+
+if [ '$USER' == 'root' ]; then
+ export PS1='[\u@\h]\w\# '
+else
+ export PS1='[\u@\h]\w\$ '
+fi
+
+alias ll='ls -alF'
+alias la='ls -A'
+alias l='ls -CF'
+
+export TERM=vt100
+export TERMINFO=/usr/share/terminfo
diff --git a/device/milkv-duo-spinand/br_overlay/etc/run_usb.sh b/device/milkv-duo-spinand/br_overlay/etc/run_usb.sh
new file mode 100755
index 000000000..760c70284
--- /dev/null
+++ b/device/milkv-duo-spinand/br_overlay/etc/run_usb.sh
@@ -0,0 +1,292 @@
+CLASS=acm
+VID=0x3346
+PID=0x1003
+MSC_PID=0x1008
+RNDIS_PID=0x1009
+UVC_PID=0x100A
+UAC_PID=0x100B
+ADB_VID=0x18D1
+ADB_PID=0x4EE0
+ADB_PID_M1=0x4EE2
+ADB_PID_M2=0x4EE4
+MANUFACTURER="Cvitek"
+PRODUCT="USB Com Port"
+PRODUCT_RNDIS="RNDIS"
+PRODUCT_UVC="UVC"
+PRODUCT_UAC="UAC"
+PRODUCT_ADB="ADB"
+ADBD_PATH=/usr/bin/
+SERIAL="0123456789"
+MSC_FILE=$3
+CVI_DIR=/tmp/usb
+CVI_GADGET=$CVI_DIR/usb_gadget/cvitek
+CVI_FUNC=$CVI_GADGET/functions
+FUNC_NUM=0
+MAX_EP_NUM=4
+TMP_NUM=0
+INTF_NUM=0
+EP_IN=0
+EP_OUT=0
+
+case "$2" in
+ acm)
+ CLASS=acm
+ ;;
+ msc)
+ CLASS=mass_storage
+ PID=$MSC_PID
+ ;;
+ cvg)
+ CLASS=cvg
+ ;;
+ rndis)
+ CLASS=rndis
+ PID=$RNDIS_PID
+ PRODUCT=$PRODUCT_RNDIS
+ ;;
+ uvc)
+ CLASS=uvc
+ PID=$UVC_PID
+ PRODUCT=$PRODUCT_UVC
+ ;;
+ uac1)
+ CLASS=uac1
+ PID=$UAC_PID
+ PRODUCT=$PRODUCT_UAC
+ ;;
+ adb)
+ CLASS=ffs.adb
+ VID=$ADB_VID
+ PID=$ADB_PID
+ PRODUCT=$PRODUCT_ADB
+ ;;
+ *)
+ if [ "$1" = "probe" ] ; then
+ echo "Usage: $0 probe {acm|msc|cvg|rndis|uvc|uac1|adb}"
+ exit 1
+ fi
+esac
+
+calc_func() {
+ FUNC_NUM=$(ls $CVI_GADGET/functions -l | grep ^d | wc -l)
+ echo "$FUNC_NUM file(s)"
+}
+
+res_check() {
+ TMP_NUM=$(find $CVI_GADGET/functions/ -name "acm*" | wc -l)
+ EP_OUT=$(($EP_OUT+$TMP_NUM))
+ TMP_NUM=$(($TMP_NUM * 2))
+ EP_IN=$(($EP_IN+$TMP_NUM))
+ INTF_NUM=$(($INTF_NUM+$TMP_NUM))
+ TMP_NUM=$(find $CVI_GADGET/functions/ -name "mass_storage*" | wc -l)
+ EP_IN=$(($EP_IN+$TMP_NUM))
+ EP_OUT=$(($EP_OUT+$TMP_NUM))
+ INTF_NUM=$(($INTF_NUM+$TMP_NUM))
+ TMP_NUM=$(find $CVI_GADGET/functions/ -name "cvg*" | wc -l)
+ EP_IN=$(($EP_IN+$TMP_NUM))
+ EP_OUT=$(($EP_OUT+$TMP_NUM))
+ INTF_NUM=$(($INTF_NUM+$TMP_NUM))
+ TMP_NUM=$(find $CVI_GADGET/functions/ -name "rndis*" | wc -l)
+ EP_OUT=$(($EP_OUT+$TMP_NUM))
+ TMP_NUM=$(($TMP_NUM * 2))
+ EP_IN=$(($EP_IN+$TMP_NUM))
+ INTF_NUM=$(($INTF_NUM+$TMP_NUM))
+ TMP_NUM=$(find $CVI_GADGET/functions/ -name "uvc*" | wc -l)
+ TMP_NUM=$(($TMP_NUM * 2))
+ EP_IN=$(($EP_IN+$TMP_NUM))
+ INTF_NUM=$(($INTF_NUM+$TMP_NUM))
+ TMP_NUM=$(find $CVI_GADGET/functions/ -name "uac1*" | wc -l)
+ TMP_NUM=$(($TMP_NUM * 2))
+ EP_IN=$(($EP_IN+$TMP_NUM))
+ EP_OUT=$(($EP_OUT+$TMP_NUM))
+ INTF_NUM=$(($INTF_NUM+$TMP_NUM))
+ TMP_NUM=$(find $CVI_GADGET/functions/ -name ffs.adb | wc -l)
+ EP_IN=$(($EP_IN+$TMP_NUM))
+ EP_OUT=$(($EP_OUT+$TMP_NUM))
+ INTF_NUM=$(($INTF_NUM+$TMP_NUM))
+
+ if [ "$CLASS" = "acm" ] ; then
+ EP_IN=$(($EP_IN+2))
+ EP_OUT=$(($EP_OUT+1))
+ fi
+ if [ "$CLASS" = "mass_storage" ] ; then
+ EP_IN=$(($EP_IN+1))
+ EP_OUT=$(($EP_OUT+1))
+ fi
+ if [ "$CLASS" = "cvg" ] ; then
+ EP_IN=$(($EP_IN+1))
+ EP_OUT=$(($EP_OUT+1))
+ fi
+ if [ "$CLASS" = "rndis" ] ; then
+ EP_IN=$(($EP_IN+2))
+ EP_OUT=$(($EP_OUT+1))
+ fi
+ if [ "$CLASS" = "uvc" ] ; then
+ EP_IN=$(($EP_IN+2))
+ fi
+ if [ "$CLASS" = "uac1" ] ; then
+ EP_IN=$(($EP_IN+1))
+ EP_OUT=$(($EP_OUT+1))
+ fi
+ if [ "$CLASS" = "ffs.adb" ] ; then
+ EP_IN=$(($EP_IN+1))
+ EP_OUT=$(($EP_OUT+1))
+ fi
+ echo "$EP_IN in ep"
+ echo "$EP_OUT out ep"
+ if [ $EP_IN -gt $MAX_EP_NUM ]; then
+ echo "reach maximum resource"
+ exit 1
+ fi
+ if [ $EP_OUT -gt $MAX_EP_NUM ]; then
+ echo "reach maximum resource"
+ exit 1
+ fi
+}
+
+probe() {
+ if [ ! -d $CVI_DIR ]; then
+ mkdir $CVI_DIR
+ fi
+ if [ ! -d $CVI_DIR/usb_gadget ]; then
+ # Enale USB ConfigFS
+ mount none $CVI_DIR -t configfs
+ # Create gadget dev
+ mkdir $CVI_GADGET
+ # Set the VID and PID
+ echo $VID >$CVI_GADGET/idVendor
+ echo $PID >$CVI_GADGET/idProduct
+ # Set the product information string
+ mkdir $CVI_GADGET/strings/0x409
+ echo $MANUFACTURER>$CVI_GADGET/strings/0x409/manufacturer
+ echo $PRODUCT>$CVI_GADGET/strings/0x409/product
+ echo $SERIAL>$CVI_GADGET/strings/0x409/serialnumber
+ # Set the USB configuration
+ mkdir $CVI_GADGET/configs/c.1
+ mkdir $CVI_GADGET/configs/c.1/strings/0x409
+ echo "config1">$CVI_GADGET/configs/c.1/strings/0x409/configuration
+ # Set the MaxPower of USB descriptor
+ echo 120 >$CVI_GADGET/configs/c.1/MaxPower
+ fi
+ # get current functions number
+ calc_func
+ # assign the class code for composite device
+ if [ ! $FUNC_NUM -eq 0 ]; then
+ echo 0xEF >$CVI_GADGET/bDeviceClass
+ echo 0x02 >$CVI_GADGET/bDeviceSubClass
+ echo 0x01 >$CVI_GADGET/bDeviceProtocol
+ fi
+ # resource check
+ res_check
+ # create the desired function
+ if [ "$CLASS" = "ffs.adb" ] ; then
+ # adb shall be the last function to probe. Override the pid/vid
+ echo $VID >$CVI_GADGET/idVendor
+ echo $PID >$CVI_GADGET/idProduct
+ # choose pid for different function number
+ if [ $INTF_NUM -eq 1 ]; then
+ echo $ADB_PID_M1 >$CVI_GADGET/idProduct
+ fi
+ if [ $INTF_NUM -eq 2 ]; then
+ echo $ADB_PID_M2 >$CVI_GADGET/idProduct
+ fi
+ mkdir $CVI_GADGET/functions/$CLASS
+ else
+ mkdir $CVI_GADGET/functions/$CLASS.usb$FUNC_NUM
+ fi
+ if [ "$CLASS" = "mass_storage" ] ; then
+ echo $MSC_FILE >$CVI_GADGET/functions/$CLASS.usb$FUNC_NUM/lun.0/file
+ fi
+ if [ "$CLASS" = "rndis" ] ; then
+ #OS STRING
+ echo 1 >$CVI_GADGET/os_desc/use
+ echo 0xcd >$CVI_GADGET/os_desc/b_vendor_code
+ echo MSFT100 >$CVI_GADGET/os_desc/qw_sign
+ #COMPATIBLE ID
+ echo RNDIS >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/compatible_id
+ #MAKE c.1 THE ONE ASSOCIATED WITH OS DESCRIPTORS
+ ln -s $CVI_GADGET/configs/c.1 $CVI_GADGET/os_desc
+ #MAKE "Icons" EXTENDED PROPERTY
+ mkdir $CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons
+ echo 2 >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons/type
+ echo "%SystemRoot%\\system32\\shell32.dll,-233" >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Icons/data
+ #MAKE "Label" EXTENDED PROPERTY
+ mkdir $CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label
+ echo 1 >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label/type
+ echo "XYZ Device" >$CVI_FUNC/rndis.usb$FUNC_NUM/os_desc/interface.rndis/Label/data
+ fi
+
+}
+
+start() {
+ # link this function to the configuration
+ calc_func
+ if [ $FUNC_NUM -eq 0 ]; then
+ echo "Functions Empty!"
+ exit 1
+ fi
+ if [ -d $CVI_GADGET/functions/ffs.adb ]; then
+ FUNC_NUM=$(($FUNC_NUM-1))
+ fi
+ for i in `seq 0 $(($FUNC_NUM-1))`;
+ do
+ find $CVI_GADGET/functions/ -name "*.usb$i" | xargs -I % ln -s % $CVI_GADGET/configs/c.1
+ done
+ if [ -d $CVI_GADGET/functions/ffs.adb ]; then
+ ln -s $CVI_GADGET/functions/ffs.adb $CVI_GADGET/configs/c.1
+ mkdir /dev/usb-ffs/adb -p
+ mount -t functionfs adb /dev/usb-ffs/adb
+ if [ -f $ADBD_PATH/adbd ]; then
+ $ADBD_PATH/adbd &
+ fi
+ else
+ # Start the gadget driver
+ UDC=`ls /sys/class/udc/ | awk '{print $1}'`
+ echo ${UDC} >$CVI_GADGET/UDC
+ fi
+}
+
+stop() {
+ if [ -d $CVI_GADGET/configs/c.1/ffs.adb ]; then
+ pkill adbd
+ rm $CVI_GADGET/configs/c.1/ffs.adb
+ else
+ echo "" >$CVI_GADGET/UDC
+ fi
+ find $CVI_GADGET/configs/ -name "*.usb*" | xargs rm -f
+ rmdir $CVI_GADGET/configs/c.*/strings/0x409/
+ tmp_dirs=$(find $CVI_GADGET/os_desc/c.* -type d)
+ if [ -n tmp_dirs ]; then
+ echo "remove os_desc!"
+ rm -rf $CVI_GADGET/os_desc/c.*/
+ find $CVI_GADGET/functions/ -name Icons | xargs rmdir
+ find $CVI_GADGET/functions/ -name Label | xargs rmdir
+ fi
+ rmdir $CVI_GADGET/configs/c.*/
+ rmdir $CVI_GADGET/functions/*
+ rmdir $CVI_GADGET/strings/0x409/
+ rmdir $CVI_GADGET
+ umount $CVI_DIR
+ rmdir $CVI_DIR
+}
+
+case "$1" in
+ start)
+ start
+ ;;
+ stop)
+ stop
+ ;;
+ probe)
+ probe
+ ;;
+ UDC)
+ ls /sys/class/udc/ >$CVI_GADGET/UDC
+ ;;
+ *)
+ echo "Usage: $0 probe {acm|msc|cvg|uvc|uac1} {file (msc)}"
+ echo "Usage: $0 start"
+ echo "Usage: $0 stop"
+ exit 1
+esac
+exit $?
diff --git a/device/milkv-duo-spinand/br_overlay/etc/uhubon.sh b/device/milkv-duo-spinand/br_overlay/etc/uhubon.sh
new file mode 100755
index 000000000..a8256765d
--- /dev/null
+++ b/device/milkv-duo-spinand/br_overlay/etc/uhubon.sh
@@ -0,0 +1,83 @@
+GPIO_HUBPORT_EN=449
+GPIO_ROLESEL=450
+GPIO_HUBRST=451
+SYS_GPIO=/sys/class/gpio
+
+hub_on() {
+ echo "turn on usb hub"
+ if [ ! -d $SYS_GPIO/gpio$GPIO_HUBPORT_EN ]; then
+ echo $GPIO_HUBPORT_EN >/sys/class/gpio/export
+ fi
+
+ if [ ! -d $SYS_GPIO/gpio$GPIO_ROLESEL ]; then
+ echo $GPIO_ROLESEL >/sys/class/gpio/export
+ fi
+
+ if [ ! -d $SYS_GPIO/gpio$GPIO_HUBRST ]; then
+ echo $GPIO_HUBRST >/sys/class/gpio/export
+ fi
+
+ echo "out" >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/direction
+ echo "out" >/sys/class/gpio/gpio$GPIO_ROLESEL/direction
+ echo "out" >/sys/class/gpio/gpio$GPIO_HUBRST/direction
+
+ echo 1 >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/value
+ echo 0 >/sys/class/gpio/gpio$GPIO_ROLESEL/value
+ echo 0 >/sys/class/gpio/gpio$GPIO_HUBRST/value
+}
+
+hub_off() {
+ echo "turn off usb hub"
+ if [ ! -d $SYS_GPIO/gpio$GPIO_HUBPORT_EN ]; then
+ echo $GPIO_HUBPORT_EN >/sys/class/gpio/export
+ fi
+
+ if [ ! -d $SYS_GPIO/gpio$GPIO_ROLESEL ]; then
+ echo $GPIO_ROLESEL >/sys/class/gpio/export
+ fi
+
+ if [ ! -d $SYS_GPIO/gpio$GPIO_HUBRST ]; then
+ echo $GPIO_HUBRST >/sys/class/gpio/export
+ fi
+
+ echo "out" >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/direction
+ echo "out" >/sys/class/gpio/gpio$GPIO_ROLESEL/direction
+ echo "out" >/sys/class/gpio/gpio$GPIO_HUBRST/direction
+
+ echo 0 >/sys/class/gpio/gpio$GPIO_HUBPORT_EN/value
+ echo 1 >/sys/class/gpio/gpio$GPIO_ROLESEL/value
+ echo 1 >/sys/class/gpio/gpio$GPIO_HUBRST/value
+}
+
+inst_mod() {
+ insmod /mnt/system/ko/configfs.ko
+ insmod /mnt/system/ko/libcomposite.ko
+ insmod /mnt/system/ko/u_serial.ko
+ insmod /mnt/system/ko/usb_f_acm.ko
+ insmod /mnt/system/ko/cvi_usb_f_cvg.ko
+ insmod /mnt/system/ko/usb_f_uvc.ko
+ insmod /mnt/system/ko/usb_f_fs.ko
+ insmod /mnt/system/ko/u_audio.ko
+ insmod /mnt/system/ko/usb_f_uac1.ko
+ insmod /mnt/system/ko/usb_f_serial.ko
+ insmod /mnt/system/ko/usb_f_mass_storage.ko
+ insmod /mnt/system/ko/u_ether.ko
+ insmod /mnt/system/ko/usb_f_ecm.ko
+ insmod /mnt/system/ko/usb_f_eem.ko
+ insmod /mnt/system/ko/usb_f_rndis.ko
+}
+
+case "$1" in
+ host)
+ insmod /mnt/system/ko/dwc2.ko
+ echo host > /proc/cviusb/otg_role
+ ;;
+ device)
+ echo device > /proc/cviusb/otg_role
+ ;;
+ *)
+ echo "Usage: $0 host"
+ echo "Usage: $0 device"
+ exit 1
+esac
+exit $?
diff --git a/device/milkv-duo-spinand/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1 b/device/milkv-duo-spinand/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1
new file mode 120000
index 000000000..4665bcf84
--- /dev/null
+++ b/device/milkv-duo-spinand/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1
@@ -0,0 +1 @@
+../usr/lib64v0p7_xthead/lp64d/libc.so
\ No newline at end of file
diff --git a/device/milkv-duo-spinand/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so b/device/milkv-duo-spinand/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so
new file mode 100755
index 000000000..8a2b8ff7d
Binary files /dev/null and b/device/milkv-duo-spinand/br_overlay/usr/lib64v0p7_xthead/lp64d/libc.so differ
diff --git a/device/milkv-duo-spinand/br_overlay/usr/local/bin/autologin b/device/milkv-duo-spinand/br_overlay/usr/local/bin/autologin
new file mode 100755
index 000000000..6f12842ec
--- /dev/null
+++ b/device/milkv-duo-spinand/br_overlay/usr/local/bin/autologin
@@ -0,0 +1,2 @@
+#! /bin/sh
+exec /bin/login -f root
diff --git a/device/milkv-duo-spinand/genimage.cfg b/device/milkv-duo-spinand/genimage.cfg
new file mode 100644
index 000000000..bd4cbe61b
--- /dev/null
+++ b/device/milkv-duo-spinand/genimage.cfg
@@ -0,0 +1,43 @@
+flash nand-128M-2048 {
+ pebsize = 131072
+ numpebs = 1024
+ minimum-io-unit-size = 2048
+}
+
+image milkv-duospinand.img {
+ flash {
+ }
+ flashtype = "nand-128M-2048"
+
+ partition fip {
+ image = "fip.bin"
+ size = 2560k
+ }
+
+ partition boot {
+ image = "rawimages/boot.spinand"
+ size = 6144k
+ }
+
+ partition env {
+ size = 128k
+ }
+
+ partition env_bak {
+ size = 128k
+ }
+
+ partition rootfs {
+ image = "rootfs.spinand"
+ size = 40960k
+ }
+
+ partition system {
+ image = "rawimages/system.spinand"
+ size = 71680k
+
+ partition cfg {
+ image = "rawimages/cfg.spinand"
+ size = 4096k
+ }
+}
diff --git a/device/milkv-duo-spinand/overlay/mnt/system/blink.sh b/device/milkv-duo-spinand/overlay/mnt/system/blink.sh
new file mode 100755
index 000000000..b7bf4e0dd
--- /dev/null
+++ b/device/milkv-duo-spinand/overlay/mnt/system/blink.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+LED_PIN=440
+
+LED_GPIO=/sys/class/gpio/gpio${LED_PIN}
+
+if test -d ${LED_GPIO}; then
+ echo "PIN ${LED_PIN} already exported"
+else
+ echo ${LED_PIN} > /sys/class/gpio/export
+fi
+
+echo out > ${LED_GPIO}/direction
+
+while true; do
+ echo 0 > ${LED_GPIO}/value
+ sleep 0.5
+ echo 1 > ${LED_GPIO}/value
+ sleep 0.5
+done
+
diff --git a/device/milkv-duo-spinand/overlay/mnt/system/duo-init.sh b/device/milkv-duo-spinand/overlay/mnt/system/duo-init.sh
new file mode 100755
index 000000000..b7f31bcc4
--- /dev/null
+++ b/device/milkv-duo-spinand/overlay/mnt/system/duo-init.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+
+# Set Pin-29(GP22) to GPIO
+devmem 0x0502707c 32 0x111
+devmem 0x03001068 32 0x3
+
+# Set Pin-19(GP14) to GPIO
+duo-pinmux -w GP14/GP14 > /dev/null
+
+# insmod pwm module
+insmod /mnt/system/ko/cv180x_pwm.ko
diff --git a/device/milkv-duo-spinand/overlay/mnt/system/usb-host.sh b/device/milkv-duo-spinand/overlay/mnt/system/usb-host.sh
new file mode 100755
index 000000000..a80cdb89f
--- /dev/null
+++ b/device/milkv-duo-spinand/overlay/mnt/system/usb-host.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+echo host > /proc/cviusb/otg_role >> /tmp/usb.log 2>&1
+
diff --git a/device/milkv-duo-spinand/overlay/mnt/system/usb-rndis.sh b/device/milkv-duo-spinand/overlay/mnt/system/usb-rndis.sh
new file mode 100755
index 000000000..e0f132b3a
--- /dev/null
+++ b/device/milkv-duo-spinand/overlay/mnt/system/usb-rndis.sh
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+/etc/uhubon.sh device >> /tmp/rndis.log 2>&1
+/etc/run_usb.sh probe rndis >> /tmp/rndis.log 2>&1
+/etc/run_usb.sh start rndis >> /tmp/rndis.log 2>&1
+
+sleep 0.5
+ifconfig usb0 192.168.42.1
+
+count=`ps | grep dnsmasq | grep -v grep | wc -l`
+if [ ${count} -lt 1 ] ;then
+ echo "/etc/init.d/S80dnsmasq start" >> /tmp/rndis.log 2>&1
+ /etc/init.d/S80dnsmasq start >> /tmp/rndis.log 2>&1
+fi
diff --git a/device/milkv-duo-spinand/overlay/mnt/system/usb.sh b/device/milkv-duo-spinand/overlay/mnt/system/usb.sh
new file mode 120000
index 000000000..f8f9c5257
--- /dev/null
+++ b/device/milkv-duo-spinand/overlay/mnt/system/usb.sh
@@ -0,0 +1 @@
+usb-host.sh
\ No newline at end of file
diff --git a/fsbl/plat/cv180x/bl2_objs/cv1800b_milkv_duo_spinand b/fsbl/plat/cv180x/bl2_objs/cv1800b_milkv_duo_spinand
new file mode 120000
index 000000000..b3b23abfe
--- /dev/null
+++ b/fsbl/plat/cv180x/bl2_objs/cv1800b_milkv_duo_spinand
@@ -0,0 +1 @@
+cv1800b_wdmb_0008a_spinor
\ No newline at end of file