chaoyangnz / rvx

xv6 on risc-v baremetal -> Nezha (Allwinner D1)

RVX

A xv6 port on D1.

Currently I run on Nezha.

Development (Ubuntu)

Prerequisite

• Nazhe

Unbuntu:

• USB-UART driver: sudo apt install libusb-1.0-0-dev
• build xfel
• COM GUI: [cutecom]: sudo apt install cutecom

Validation

• lsusb

Bus 001 Device 004: ID 0403:6001 Future Technology Devices International, Ltd FT232 Serial (UART) IC Bus 001 Device 005: ID 1f3a:efe8 Allwinner Technology sunxi SoC OTG connector in FEL/flashing mode

sudo adduser <user> dialout

• sudo xfel version

AWUSBFEX ID=0x00185900(D1/F133) dflag=0x44 dlength=0x08 scratchpad=0x00045000

Build

npm install --global xpm@latest
xpm install
./dev build

Now open a Serial session in Cutecom GUI, select serial device "/dev/ttyUSB0", baud rate is 115200bps

Run ./dev start

See UTART output in Cutecom.

Development (Windows + WSL)

Prerequisite

• MangoPI MQ Pro

WSL:

• build xfel
• USB-UART driver: sudo apt-get install libusb-1.0-0-dev

Windows:

• xfel (we don't use xfel in Windows actually)
• Driver for FTDI USB-UART converter
• FEL Driver for Allwinner Technology sunxi SoC OTG, this one is for FEL mode

Both: usbipd

https://blog.golioth.io/program-mcu-from-wsl2-with-usb-support/

Validation

In Windows:

usbipd wsl list
# find the bus_id of vid 1f3a:efe8
usbipd wsl -a -b 1-8

Now open a Serial session in Mobxterm, select serial device "COM3 (USB Serial Port (COM3))", baud rate is 115200bps

In WSL Ubuntu:

lsusb
# an additional usb device
# Bus 001 Device 004: ID 1f3a:efe8 Allwinner Technology sunxi SoC OTG connector in FEL/flashing mode

BUild

npm install --global xpm@latest
xpm install
./dev build
./dev start

check the serial port output in the above Mobxterm session tab.