Merge pull request #56 from yue-xiaomin/dev

add NOR/NAND configurations

README-zh.md

@@ -71,10 +71,12 @@ Usage:
 ./build.sh [board]      - Build [board] directly, supported boards asfollows:
 milkv-duo
 milkv-duo-lite
+milkv-duo-spinand
+milkv-duo-spinor
 milkv-duo256m
 milkv-duo256m-lite
 ```
-最下边列出的是当前支持的目标版本列表，带 `lite` 后缀的为精简版，不包含 python，pip, pinpong 等库和应用包。
+最下边列出的是当前支持的目标版本列表，带 `lite` 后缀的为精简版，不包含 python，pip, pinpong 等库和应用包。带`spinor`或者`spinand` 后缀的为基于IOB板载NOR FLASH或者NAND FLASH的版本。
 
 如提示中所示，有两种方法来编译目录版本。
 
@@ -84,8 +86,11 @@ milkv-duo256m-lite
 Select a target to build:
 1. milkv-duo
 2. milkv-duo-lite
-3. milkv-duo256m
+3. milkv-duo-spinand
-4. milkv-duo256m-lite
+4. milkv-duo-spinor
+5. milkv-duo256m
+6. milkv-duo256m-lite
+7. milkv-duos
 Which would you like:
 ```
 
@@ -94,7 +99,7 @@ Which would you like:
 # ./build.sh milkv-duo
 ```
 
-编译成功后可以在 `out` 目录下看到生成的SD卡烧录镜像 `milkv-duo-*-*.img`
+编译成功后可以在 `out` 目录下看到生成的SD卡烧录镜像 `milkv-duo-*-*.img`，或者NOR FLASH/NAND FLASH 的烧录文件目录`milkv-duo-*-*`。
 
 *注: 第一次编译会自动下载所需的工具链，大小为 840M 左右，下载完会自动解压到 SDK 目录下的 `host-tools` 目录，下次编译时检测到已存在 `host-tools` 目录，就不会再次下载了*
 
@@ -110,6 +115,8 @@ tar -xf host-tools.tar.gz -C /your/sdk/path/
 ```
 milkv-duo               cv1800b_milkv_duo_sd
 milkv-duo-lite          cv1800b_milkv_duo_sd
+milkv-duo-spinand		cv1800b_milkv_duo_spinand
+milkv-duo-spinor		cv1800b_milkv_duo_spinor
 milkv-duo256m           cv1812cp_milkv_duo256m_sd
 milkv-duo256m-lite      cv1812cp_milkv_duo256m_sd
 ```
@@ -137,8 +144,10 @@ pack_sd_image
 
 生成的固件位置：
 ```
-Duo:      install/soc_cv1800b_milkv_duo_sd/[board].img
+Duo:      	install/soc_cv1800b_milkv_duo_sd/[board].img
-Duo256M:  install/soc_cv1812cp_milkv_duo256m_sd/[board].img
+Duo(nor): 	install/soc_cv1800b_milkv_duo_sd/fip.bin、boot.spinor、rootfs.spinor
+Duo(nand):	install/soc_cv1800b_milkv_duo_sd/fip.bin、boot.spinand、rootfs.spinand、system.spinand、cfg.spinand
+Duo256M:  	install/soc_cv1812cp_milkv_duo256m_sd/[board].img
 ```
 
 ## 二、使用 Docker 编译
@@ -188,6 +197,8 @@ docker exec -it duodocker /bin/bash -c "cd /home/work && cat /etc/issue && ./bui
 ```
 milkv-duo
 milkv-duo-lite
+milkv-duo-spinand
+milkv-duo-spinor
 milkv-duo256m
 milkv-duo256m-lite
 ```
@@ -231,6 +242,8 @@ root@8edea33c2239:/# cd /home/work/
 ```
 milkv-duo               cv1800b_milkv_duo_sd
 milkv-duo-lite          cv1800b_milkv_duo_sd
+milkv-duo-spinand		cv1800b_milkv_duo_spinand
+milkv-duo-spinor		cv1800b_milkv_duo_spinor
 milkv-duo256m           cv1812cp_milkv_duo256m_sd
 milkv-duo256m-lite      cv1812cp_milkv_duo256m_sd
 ```
@@ -259,6 +272,8 @@ pack_sd_image
 生成的固件位置：
 ```
 Duo:      install/soc_cv1800b_milkv_duo_sd/[board].img
+Duo(nor): 	install/soc_cv1800b_milkv_duo_sd/fip.bin、boot.spinor、rootfs.spinor
+Duo(nand):	install/soc_cv1800b_milkv_duo_sd/fip.bin、boot.spinand、rootfs.spinand、system.spinand、cfg.spinand
 Duo256M:  install/soc_cv1812cp_milkv_duo256m_sd/[board].img
 ```
 
@@ -332,6 +347,14 @@ appendWindowsPath = false
   ```bash
   sudo dd if=milkv-duo-XXX.img of=/dev/sdX
   ```
+## IOB板FLASH烧录
+
+- 需要IOB板FLASH位置处焊接上NOR或者NAND FLASH(需要用户后期自己动手)
+- 准备一张没有烧录SD镜像的SD卡，将out下`milkv-duo-spinor-*-*`或者`milkv-duo-spinand-*-*`目录下全部文件拷贝至内存卡根目录
+- 将拷贝好镜像的 TF 卡插入 Milk-V Duo 的 TF 卡槽中
+- 接好串口线，可观察刻录进度
+- 开机上电即开始刻录镜像到NOR或者NAND，等待uboot中自动刻录镜像完成
+- 拔掉Milk-V Duo 的 TF 卡槽中的 TF 卡，重新上电即可从NOR或者NAND启动
 
 ## 开机
 

build.sh

@@ -111,6 +111,11 @@ function milkv_build()
     popd
   fi
 
+  # clean nor/nand img
+  if [ -f "${OUTPUT_DIR}/upgrade.zip" ]; then
+	  rm -rf ${OUTPUT_DIR}/*
+  fi
+   
   clean_all
   build_all
   if [ $? -eq 0 ]; then
@@ -154,10 +159,37 @@ function milkv_pack_sd()
   fi
 }
 
+function milkv_pack_nor_nand()
+{
+  [ ! -d out ] && mkdir out
+	
+  if [ -f "${OUTPUT_DIR}/upgrade.zip" ]; then
+	nor_out_name=${MILKV_BOARD}-`date +%Y%m%d-%H%M`
+	mkdir -p out/$nor_out_name
+  
+	if [ "${STORAGE_TYPE}" == "spinor" ]; then
+		cp ${OUTPUT_DIR}/fip.bin out/$nor_out_name
+		cp ${OUTPUT_DIR}/*.spinor out/$nor_out_name 		
+	else
+		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: ${nor_out_name}"
+  else
+    print_err "Create spinor img failed!"
+    exit 1
+  fi
+}
+
 function milkv_pack()
 {
   if [ "${STORAGE_TYPE}" == "sd" ]; then
     milkv_pack_sd
+  else
+    milkv_pack_nor_nand
   fi
 }
 

build/Makefile

@@ -562,11 +562,21 @@ br-rootfs-prepare:export CROSS_COMPILE_KERNEL=$(patsubst "%",%,$(CONFIG_CROSS_CO
 br-rootfs-prepare:export CROSS_COMPILE_SDK=$(patsubst "%",%,$(CONFIG_CROSS_COMPILE_SDK))
 br-rootfs-prepare:
 	$(call print_target)
+ifneq ($(STORAGE_TYPE), sd)
+	#${Q}cp -r ${RAMDISK_PATH}/rootfs/buildroot_fs/arm/* $(BR_ROOTFS_DIR)
+	$(call TARGET_PACKAGE_INSTALL_BR_ROOTFS)
+	${Q}mkdir -p $(BR_ROOTFS_DIR)/etc/init.d/
+	${Q}python3 $(COMMON_TOOLS_PATH)/image_tool/create_automount.py $(FLASH_PARTITION_XML) $(BR_ROOTFS_DIR)/etc/init.d/
+	# Generate /etc/fw_env.config
+	# ${Q}mkdir -p $(BR_ROOTFS_DIR)/etc
+	${Q}python3 $(COMMON_TOOLS_PATH)/image_tool/mkcvipart.py $(FLASH_PARTITION_XML) $(BR_ROOTFS_DIR)/etc --fw_env
+endif
+
 	# copy ko and mmf libs
 	${Q}mkdir -p $(BR_ROOTFS_DIR)/mnt/system
 	${Q}cp -arf ${SYSTEM_OUT_DIR}/* $(BR_ROOTFS_DIR)/mnt/system/
 
-# copy milkv overlay files
+	# copy milkv overlay files
 ifeq ($(MV_VENDOR), milkv)
 	${Q}cp -arf $(TOP_DIR)/device/$(MV_BOARD)/overlay/* $(BR_ROOTFS_DIR)/
 	${Q}cp -arf $(TOP_DIR)/device/$(MV_BOARD)/br_overlay/* $(BR_ROOTFS_DIR)/
@@ -579,6 +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)
@@ -587,8 +605,16 @@ 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)
+	${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)
+	${Q}cp $(TARGET_OUTPUT_DIR)/images/rootfs.squashfs $(OUTPUT_DIR)/rawimages/rootfs.$(STORAGE_TYPE)
+	$(call raw2cimg ,rootfs.$(STORAGE_TYPE))
+else
 	${Q}cp $(TARGET_OUTPUT_DIR)/images/rootfs.ext4 $(OUTPUT_DIR)/rawimages/rootfs_ext4.$(STORAGE_TYPE)
 	$(call raw2cimg ,rootfs_ext4.$(STORAGE_TYPE))
+endif	
 
 ifeq ($(CONFIG_BUILDROOT_FS),y)
 rootfs:br-rootfs-prepare

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"
+}

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

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>;
+};
+
+/ {
+
+};

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

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

build/boards/cv180x/cv1800b_milkv_duo_spinand/partition/partition_spinand.xml

@@ -0,0 +1,10 @@
+<physical_partition type="spinand">
+    <partition label="fip" size_in_kb="2560" file="fip.bin"/>
+    <partition label="BOOT" size_in_kb="6144" file="boot.spinand"/>
+    <partition label="ENV" size_in_kb="128" file="" />
+    <partition label="ENV_BAK" size_in_kb="128" file="" />
+    <partition label="ROOTFS" size_in_kb="40960" file="rootfs.spinand" />
+    <partition label="SYSTEM" size_in_kb="71680" file="system.spinand" mountpoint="/mnt/system" type="ubifs" />
+    <partition label="CFG" size_in_kb="4096" file="cfg.spinand" mountpoint="/mnt/cfg" type="ubifs" />
+    <partition label="DATA" file="" mountpoint="/mnt/data" type="ubifs" />
+</physical_partition>

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

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;
+}

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
+

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
+

build/boards/cv180x/cv1800b_milkv_duo_spinor/config.json

@@ -0,0 +1,6 @@
+{
+    "ddr_cfg_list": [
+        "ddr2_1333_x16"
+    ],
+    "board_information": "C906B + SPINOR 32MB + QFN SIP 64MB"
+}

build/boards/cv180x/cv1800b_milkv_duo_spinor/cv1800b_milkv_duo_spinor_defconfig

@@ -0,0 +1,44 @@
+CONFIG_CHIP_cv1800b=y
+CONFIG_BOARD_milkv_duo_spinor=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_spinor=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

build/boards/cv180x/cv1800b_milkv_duo_spinor/dts_riscv/cv1800b_milkv_duo_spinor.dts

@@ -0,0 +1,39 @@
+/dts-v1/;
+#include "cv180x_base_riscv.dtsi"
+#include "cv180x_asic_qfn.dtsi"
+#include "cv180x_asic_sd.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,w25q256", "jedec,spi-nor";
+                reg = <0>;
+        };
+};
+
+&spi2 {
+	status = "okay";
+
+	spidev@0 {
+		status = "okay";
+	};
+};
+
+&uart4 {
+	status = "okay";
+};
+
+&i2c1 {
+       status = "okay";
+       clock-frequency = <100000>;
+};
+
+/ {
+
+};
+

build/boards/cv180x/cv1800b_milkv_duo_spinor/linux/cvitek_cv1800b_milkv_duo_spinor_defconfig

@@ -0,0 +1,240 @@
+CONFIG_SYSVIPC=y
+CONFIG_POSIX_MQUEUE=y
+CONFIG_NO_HZ_IDLE=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_PREEMPT=y
+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_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_WEXT=y
+CONFIG_MAC80211=y
+CONFIG_RFKILL=y
+CONFIG_RFKILL_INPUT=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_SPI_NOR=y
+CONFIG_SPI_CVI_SPIF=y
+CONFIG_EEPROM_93CX6=m
+CONFIG_SCSI=y
+CONFIG_BLK_DEV_SD=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_SPI_DESIGNWARE=y
+CONFIG_SPI_DW_MMIO=y
+CONFIG_SPI_SPIDEV=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_FB=y
+CONFIG_FB_CVITEK=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_CONFIGFS=y
+CONFIG_USB_CONFIGFS_SERIAL=y
+CONFIG_USB_CONFIGFS_ACM=y
+CONFIG_USB_CONFIGFS_RNDIS=y
+CONFIG_USB_CONFIGFS_MASS_STORAGE=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_FB_TFT=y
+CONFIG_FB_TFT_SSD1306=m
+# CONFIG_IOMMU_SUPPORT is not set
+CONFIG_CV1835_SYSDMA_REMAP=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_SQUASHFS=y
+# CONFIG_SQUASHFS_ZLIB is not set
+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_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

build/boards/cv180x/cv1800b_milkv_duo_spinor/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

build/boards/cv180x/cv1800b_milkv_duo_spinor/partition/partition_spinor.xml

@@ -0,0 +1,7 @@
+<physical_partition type="spinor">
+    <partition label="fip" size_in_kb="640" readonly="false" file="fip.bin"/>
+    <partition label="BOOT" size_in_kb="4096" readonly="false" file="boot.spinor"/>
+    <partition label="ENV" size_in_kb="64" file="" />
+    <partition label="ROOTFS" size_in_kb="27968" readonly="true" file="rootfs.spinor" />
+</physical_partition>
+

build/boards/cv180x/cv1800b_milkv_duo_spinor/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

build/boards/cv180x/cv1800b_milkv_duo_spinor/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;
+}

build/boards/cv180x/cv1800b_milkv_duo_spinor/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
+

build/boards/cv180x/cv1800b_milkv_duo_spinor/u-boot/cvitek_cv1800b_milkv_duo_spinor_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_CVITEK_SPI_FLASH=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_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 is not set
+# CONFIG_ONENAND_BOOT is not set
+CONFIG_QSPI_BOOT=y
+# CONFIG_SATA_BOOT is not set
+CONFIG_SPI_BOOT=y
+

build/milkvsetup.sh

@@ -529,19 +529,19 @@ function cvi_setup_env()
   # envs setup for specific ${SDK_VER}
   envs_sdk_ver
 
-  if [ "${STORAGE_TYPE}" == "spinand" ]; then
+#  if [ "${STORAGE_TYPE}" == "spinand" ]; then
-    PAGE_SUFFIX=2k
+#    PAGE_SUFFIX=2k
-    if [ ${NANDFLASH_PAGESIZE} == 4096 ]; then
+#    if [ ${NANDFLASH_PAGESIZE} == 4096 ]; then
-      PAGE_SUFFIX=4k
+#      PAGE_SUFFIX=4k
-    fi
+#    fi
 
-    if [[ "$ENABLE_ALIOS" != "y" ]]; then
+#    if [[ "$ENABLE_ALIOS" != "y" ]]; then
-      pushd "$BUILD_PATH"/boards/"${CHIP_ARCH,,}"/"$PROJECT_FULLNAME"/partition/
+#      pushd "$BUILD_PATH"/boards/"${CHIP_ARCH,,}"/"$PROJECT_FULLNAME"/partition/
-      ln -fs ../../../default/partition/partition_spinand_page_"$PAGE_SUFFIX".xml \
+#      ln -fs ../../../default/partition/partition_spinand_page_"$PAGE_SUFFIX".xml \
-        partition_"$STORAGE_TYPE".xml
+#        partition_"$STORAGE_TYPE".xml
-      popd
+#      popd
-    fi
+#    fi
-  fi
+#  fi
 
   # configure flash partition table
   if [ -z "${STORAGE_TYPE}" ]; then

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

buildroot-2021.05/configs/milkv-duo-spinor_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-spinor/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

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
+

device/milkv-duo-spinand/br_overlay/.gitignore

@@ -0,0 +1,6 @@
+mnt/system/
+mnt/cfg/
+mnt/data/
+usr/bin
+usr/share
+usr/lib

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

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 $?
+

device/milkv-duo-spinand/br_overlay/etc/inittab

@@ -0,0 +1,40 @@
+# /etc/inittab
+#
+# Copyright (C) 2001 Erik Andersen <andersen@codepoet.org>
+#
+# 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>:<runlevels>:<action>:<process>
+#
+# 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

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

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 $?

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 $?

device/milkv-duo-spinand/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1

@@ -0,0 +1 @@
+../usr/lib64v0p7_xthead/lp64d/libc.so

device/milkv-duo-spinand/br_overlay/usr/local/bin/autologin

@@ -0,0 +1,2 @@
+#! /bin/sh
+exec /bin/login -f root

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
+	}
+}

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
+

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

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
+

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

device/milkv-duo-spinand/overlay/mnt/system/usb.sh

@@ -0,0 +1 @@
+usb-host.sh

device/milkv-duo-spinor/boardconfig.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+export MV_BOARD=milkv-duo-spinor
+export MV_BOARD_CPU=cv1800b
+export MV_VENDOR=milkv
+export MV_BUILD_ENV=milkvsetup.sh
+export MV_BOARD_LINK=cv1800b_milkv_duo_spinor
+

device/milkv-duo-spinor/br_overlay/.gitignore

@@ -0,0 +1,6 @@
+mnt/system/
+mnt/cfg/
+mnt/data/
+usr/bin
+usr/share
+usr/lib

device/milkv-duo-spinor/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

device/milkv-duo-spinor/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 $?
+

device/milkv-duo-spinor/br_overlay/etc/inittab

@@ -0,0 +1,40 @@
+# /etc/inittab
+#
+# Copyright (C) 2001 Erik Andersen <andersen@codepoet.org>
+#
+# 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>:<runlevels>:<action>:<process>
+#
+# 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

device/milkv-duo-spinor/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

device/milkv-duo-spinor/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 $?

device/milkv-duo-spinor/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 $?

device/milkv-duo-spinor/br_overlay/lib/ld-musl-riscv64v0p7_xthead.so.1

@@ -0,0 +1 @@
+../usr/lib64v0p7_xthead/lp64d/libc.so

device/milkv-duo-spinor/br_overlay/usr/local/bin/autologin

@@ -0,0 +1,2 @@
+#! /bin/sh
+exec /bin/login -f root

device/milkv-duo-spinor/genimage.cfg

@@ -0,0 +1,30 @@
+flash nor-32M-256 {
+	pebsize = 4096
+	numpebs = 8192
+	minimum-io-unit-size = 256
+}
+
+image milkv-duospinor.img {
+	flash {
+	}
+	flashtype = "nor-32M-256"
+
+	partition fip {
+		image = "fip.bin"
+		size = 640k
+	}
+
+	partition boot {
+		image = "rawimages/boot.spinor"
+		size = 4096k
+	}
+
+	partition env {
+		size = 64k
+	}
+
+	partition rootfs {
+		image = "rawimages/rootfs.spinor"
+		size = 27968k
+	}
+}

device/milkv-duo-spinor/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
+

device/milkv-duo-spinor/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

device/milkv-duo-spinor/overlay/mnt/system/usb-host.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+echo host > /proc/cviusb/otg_role >> /tmp/usb.log 2>&1
+

device/milkv-duo-spinor/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

device/milkv-duo-spinor/overlay/mnt/system/usb.sh

@@ -0,0 +1 @@
+usb-host.sh

fsbl/plat/cv180x/bl2_objs/cv1800b_milkv_duo_spinand

@@ -0,0 +1 @@
+cv1800b_wdmb_0008a_spinor

fsbl/plat/cv180x/bl2_objs/cv1800b_milkv_duo_spinor

@@ -0,0 +1 @@
+cv1800b_wdmb_0008a_spinor

u-boot-2021.10/cmd/cvi_update.c

@@ -86,7 +86,8 @@ int _prgImage(char *file, uint32_t chunk_header_size, char *file_name)
 #elif defined(CONFIG_SPI_FLASH)
 	if (update_magic == SD_UPDATE_MAGIC && (!strcmp(file_name, "fip_spl.bin")
 		|| !strcmp(file_name, "fip.bin")
-		|| !strcmp(file_name, "boot.spinor"))) {
+		|| !strcmp(file_name, "boot.spinor")
+		|| !strcmp(file_name, "rootfs.spinor"))) {
 		snprintf(cmd, 255, "sf update %p 0x%x 0x%x",
 			 (void *)file + chunk_header_size, offset, size);
 	} else {