riscv-soc-cores

This repo contains core description files for FuseSoC to create a simple RISC-V-based SoC for FPGA. Based on https://github.com/openrisc/orpsoc-cores.

It is intended to implement as fully-featured system as possible, depending on the targeted hardware.

Currently supported FPGA boards:

Board	FPGA	on-chip RAM	external RAM
	Cyclone II
Waveshare CoreEP2C5	EP2C5T144C8	8 KiB
Altera DE1 Board	EP2C20F484C7	16 KiB	8 MiB SDRAM
	Cyclone III
Marsohod2	EP3C10E144C8	16 KiB	8 MiB SDRAM
	Cyclone IV
Waveshare CoreEP4CE6	EP4CE6E22C8	16 KiB
Marsohod2bis	EP4CE6E22C8	16 KiB	8 MiB SDRAM
Marsohod2RPI	EP4CE6E22C8	16 KiB
DE0-Nano	EP4CE22F17C6	32 KiB	32 MiB SDRAM
DE2-115	EP4CE115F29C7	32 KiB ?
	MAX 10
Marsohod3	10M50SAE144C8GES	64 KiB	8 MiB SDRAM
Marsohod3bis	10M08SAE144C8GES	32 KiB
	Cyclone 10 LP
Intel Cyclone 10 LP FPGA Evaluation Kit	10CL025YU256I7G	16 KiB
	Artix-7
Digilent Arty A7-35T	XC7A35T-L1CSG324I	16 KiB

Preparing

First install fusesoc:

$ sudo apt-get install -y python3-pip
$ git clone https://github.com/olofk/fusesoc
$ cd fusesoc
$ git checkout 1.12.0
$ sudo pip3 install -e .

Simulation

Install Icarus Verilog and GtkWave software:

$ sudo apt-get install iverilog gtkwave

elf-loader needs libelf-dev so install it:

$ sudo apt-get install libelf-dev

Simulation:

$ fusesoc --cores-root cores/ run --target sim picorv32-wb-soc
$ gtkwave build/picorv32-wb-soc_0/sim-icarus/picorv32-wb-soc.vcd

Build

Marsohod2 needs Quartus <= 13.1:

$ export PATH=$PATH:/opt/altera/13.1/quartus/bin
$ fusesoc --cores-root cores/ run --build --tool quartus marsohod3-picorv32-wb-soc

Marsohod3 needs Quartus >= 15.0:

$ export PATH=$PATH:/opt/altera/16.0/quartus/bin
$ fusesoc --cores-root cores/ run --build --tool quartus marsohod3-picorv32-wb-soc

Programmming FPGA

Marsohod2:

$ sudo openocd -f board/marsohod2.cfg -c init -c "svf -tap ep3c10.tap build/marsohod2-picorv32-wb-soc_0/bld-quartus/marsohod2-picorv32-wb-soc_0.svf" -c shutdown

Marsohod3:

$ sudo openocd -f board/marsohod3.cfg -c init -c "svf -tap 10m50.tap build/marsohod3-picorv32-wb-soc_0/bld-quartus/marsohod3-picorv32-wb-soc_0.svf" -c shutdown