Bouffaloader demo

Usage with Cargo

Compile

cargo build --target riscv64imac-unknown-none-elf --release

Convert ELF file to binary file

cargo blri elf2bin ./target/riscv64imac-unknown-none-elf/release/bouffaloader

Fix the image header (CRC and other fields)

cargo blri patch ./target/riscv64imac-unknown-none-elf/release/bouffaloader.bin

Flash to the development board

cargo blri flash ./target/riscv64imac-unknown-none-elf/release/bouffaloader.bin

Usage with Bouffalo Lab Dev Cube

Build

rustup target install riscv64imac-unknown-none-elf
cargo build --target riscv64imac-unknown-none-elf --release

Convert the elf file to a binary file

cargo install cargo-binutils
rustup component add llvm-tools-preview
rust-objcopy .\target\riscv64imac-unknown-none-elf\release\bouffaloader -O binary .\target\riscv64imac-unknown-none-elf\release\bouffaloader.bin

Flash the binary file to the board with Bouffalo Lab Dev Cube on Windows

1. Connect the board to the computer via UART (Here takes M1s Dock as an example):

   • Normally, you can see 2 new serial ports. If not, visit Burn onboard bl702 for help.

2. Run the BLDevCube.exe, choose BL808, and click Finish.

3. In MCU page, browse target\riscv64imac-unknown-none-elf\release\bouffaloader.bin as the target of D0 Group. Choose the bigger number serial port, and set uart rate 2000000.

4. Press BOOT and RST on the board, then release RST first and BOOT after to be into UART burning mode.

5. Click Create & Download, wait for flash the binary file to success.

Interact

After flashing, repower the board and open the serial port monitor to see the output and interact with the CLI:

• help: print out all commands.

• hello: print out 'Hello world!'.

• led [<none>|on|off|switch]: operate on LED.

• reload: reload from sdcard.

• read <addr>: fetch data from address.

• write <addr> <val>: write value to address.

• boot: boot M-mode firmware.

• bootargs get|set <val>: print or set the bootargs in memory.

• print: print the configs.bootargs.