GNU Toolchain on macOS and Apple Silicon

In this repository you will find all the necesary files to compile the SDK from Bouffalo labs: https://github.com/bouffalolab/bouffalo_sdk/

Installation

Basically you need to place this folder somewhere in your mac, in my machine I have this folder in this path:

/opt/riscv-toolchain/

Then, add the toolchain to the PATH environment like this:

export PATH=$PATH:/opt/riscv-toolchain/bin

Patch the SDK

The toolchain is at least 80% of the work, but you also need to patch the SDK with some changes, the SDK remember must be clonned from this location https://github.com/bouffalolab/bouffalo_sdk/

Patch project.build

Open the file "project.build" from the sdk and look for this code

    ifeq ($(OS),Windows_NT)
    CMAKE = $(BL_SDK_BASE)/tools/cmake/bin/cmake.exe
    BL_FLASH_PROGRAM = ${BL_SDK_BASE}/tools/bflb_tools/bouffalo_flash_cube/BLFlashCommand.exe
    cmake_generator = "MinGW Makefiles"
    else
	ifeq ($(shell uname),Darwin)
	CMAKE = cmake # use user cmake
	BL_FLASH_PROGRAM = ${BL_SDK_BASE}/tools/bflb_tools/bouffalo_flash_cube/BLFlashCommand-macos
	cmake_generator = "Unix Makefiles"
	else
	CMAKE = $(BL_SDK_BASE)/tools/cmake/bin/cmake
	BL_FLASH_PROGRAM = ${BL_SDK_BASE}/tools/bflb_tools/bouffalo_flash_cube/BLFlashCommand-ubuntu
	cmake_generator = "Unix Makefiles"
	endif

Replace it with this:

ifeq ($(OS),Windows_NT)
CMAKE = $(BL_SDK_BASE)/tools/cmake/bin/cmake.exe
cmake_generator = "MinGW Makefiles"
else
CMAKE = /opt/homebrew/bin/cmake
BL_FLASH_PROGRAM = ${BL_SDK_BASE}/tools/bflb_tools/bouffalo_flash_cube/BLFlashCommand-macos
cmake_generator = "Unix Makefiles"
endif

Patch bflb_flash.cmake

Find the bflb_flash.cmake file in the same SDK folder and replace this line set(TOOL_SUFFIX "-ubuntu") For this line (this is a lazy fix!): set(TOOL_SUFFIX "-macos")

Compile

Now, you can compile in the Apple M1 like this: make CHIP=bl616 BOARD=bl616dk make flash CHIP=bl616 BOARD=bl616dk COMX=/dev/tty.xyz

Enjoy!