Collection of example libraries and test programs for the existing Rocket Custom Coprocessor (RoCC) accelerators for Rocket Chip.
Usage
Install the RISC-V toolchain and make sure that it's on your path. You need to build a patched Proxy Kernel that will set the XS bits to allow access to the "extension", i.e., some RoCC accelerator. You can change this manually or use the provided patch (patches/riscv-pk.patch):
cd $RISCV_PK_DIR
git apply $THIS_REPO_DIR/patches/riscv-pk.patch
mkdir build
cd build
../configure --prefix=$RISCV/riscv64-unknown-elf --host=riscv64-unknown-elf
make
make install
Build everything in this repository (librocc.a and test-accumulator):
cd $THIS_REPO_DIR
make
Build a rocket-chip emulator with the RoCC examples baked in and run the provided test program:
cd $ROCKET_CHIP_DIR/emulator
make CONFIG=RoccExampleConfig
./emulator-Top-RoccExampleConfig pk $THIS_REPO_DIR/build/test-accumulator