DE10-NANO-RISCV

A RISC-V SoC on Terasic DE10-NANO

• DE10-Nano
• T-Core (As far as I known, terasic has ported the E203 to T-Core,which is a sweet board)

Description

1. Hbird E203 form Nuclei Technology
2. Ported the code form LiChee-Tang
3. 16Mhz clock input now(can works higher)
4. 6927 LAMs and about 65Kb block ram now (maybe less)
5. mask-rom boot default, and jump to itcm ram 0x80000000
6. LED0 and LED2 blink default

Works

• change the pll and ram ip for intel FPGA
• Write the LED-Blink ASM Code for E203
• Build the binary and make a mif(hex) file for itcm ram
• some timing check by signaltap and verdi simulation
• write the binary to itcam hex tools
• add led C code
• add hbird-sdk runtime (testing)
• add a simple C-based RISC-V simulator that can run led blink binary
• update the ftdi script for e203 debug with ft2232hl tools (upload the binary to itcm, then run openocd and gdb)

Build the itcm ram hex

02.led_c

riscv-none-embed-gcc -march=rv32i -mabi=ilp32 -Tlink_itcm.lds  -nostartfiles -o led.elf start.S main.c
riscv-none-embed-objcopy -O binary led.elf led.bin
../../../tools/bin2ihex led.bin > led.hex

hbird-sdk

    cd de10-nano-riscv/hbird-sdk
    export RISCV_OPENOCD= path to openocd (eg./opt/xpack-openocd-0.10.0-14/bin)
    export RISCV_PATH= path to risc-v gcc path (eg./opt/riscv-none-gcc/7.2.0-2-20180111-2230)
    make dasm PROGRAM=hello_world DOWNLOAD=itcm USE_NANO=1 NANO_PFLOAT=0
    make upload PROGRAM=hello_world DOWNLOAD=itcm
    make run_openocd PROGRAM=hello_world DOWNLOAD=itcm
open a new terminal
    cd de10-nano-riscv/hbird-sdk
    export RISCV_OPENOCD= path to openocd (eg./opt/xpack-openocd-0.10.0-14/bin)
    export RISCV_PATH= path to risc-v gcc path (eg./opt/riscv-none-gcc/7.2.0-2-20180111-2230)
    make run_gdb PROGRAM=hello_world DWONLOAD=itcm

(gdb)
    break main

    jump main
    
    l

    n

here is the riscv-none-gcc link

run simulation with verilator

brabect1's e200_opensource repo

1. install verilator and gtkwave
2. make build test-rv32ui-p-xori cflags='-DVCDTRACE=1'
3. gtkwave dump.vcd