Akaria NS BSP (Board Support Package)

Akaria NS BSP (Board Support Package) is available to the public and you can try NS Family Processor soon and free. Akaria NS BSP can be run using Arty-A7 FPGA Development Board by Digilent and any of JTAG Debugger, for example Flyswatter2, DLP-USB1232H, etc. .

All components to make it run are availabe on this site free of chage, but if you would like a ready-to-run environment, you can also buy a complete Akaria NS BSP package from Hagiwara Electornics.
See here..
*At this time, this product is only available for purchase in Japan

 

This site provides following data

• Akaria NS31A FPGA bitstream
• Akaria NS Family toolchain
• Akaria NS BSP software platform
• Akaria NS31A on Arty-A7 sample test application

 

Akaria NS31A FPGA bitstream
You can download NS31A FPGA bitstream data and documents including User Manual: akaria-ns31-arty-fpga-231219.tar.gz (5.40MB).
To view the User Manuals (Akaria NS31A and NS31A FPGA on Arty A7) immediatly

 

Akaria NS Family toolchain (akaria-riscv-toolchain)
You can get toolchain source codes and compiled binary including compiler, linker, library, etc from following GitHub site.
https://github.com/nsitexe/akaria-riscv-toolchain

Open on-chip debugger, openocd is available for NS Family. you can download compiled software binaries and sample configuration files and docker files to reproduce compilation: akaria-openocd.tar.gz (29.5MB).
If you need source code, download from below and build with the release tag of “v0.12.0”
https://github.com/openocd-org/openocd

 

Akaria NS BSP software platform (akaria-bmetal)
You can download the source codes following
https://github.com/nsitexe/akaria-bmetal

 

Akaria NS31A on Arty-A7 sample test applicaion (akaria-ns31-arty)
You can download the source codes following
https://github.com/nsitexe/akaria-ns31-arty

 

Getting Started

1. Download each data from the links provided on this site.

2. Write FPGA bitstream in your Arty-A7 Board. refer to "Akaria_NS31A_Arty_bitstream_writing.pdf" in akaria-ns31-arty-fpga.
DIP-SW[3:0]=2'b0101 is recommend setting for first use.

3. Install the toolchain, refer to https://github.com/nsitexe/akaria-riscv-toolchain

4. Build the akaria-bmetal, The command to build runtime for NS31A on Arty-A7 is following
    $ mkdir build
    $ cd build
    $ cmake ../ -G Ninja \
      -DCMAKE_BUILD_TYPE=RelWithDebInfo \
      -DCMAKE_INSTALL_PREFIX=../test/sysroot/ \
      -DARCH=riscv \
      -DCROSS_COMPILE=riscv64-unknown-elf- \
      -DCC=gcc \
      -DDEFCONF=riscv_nsitexe_ns31_arty
    $ ninja
    $ ninja install
* When you occur errors by failing to find commands, try following command
    $ sudo apt install cmake g++ ninja-build doxygen graphviz

5. Put "akaria-ns31-arty" on akaria-bmetal/test/ . change directory to akaria-bmetal/test/akaria-ns31-arty and make. 
refer to https://github.com/nsitexe/akaria-ns31-arty
Following is command to build blink LED sample application.
    $ cd sample_blink_led
    $ make
"sample_blink_led.elf" will be created.

6. Launch openocd
    $ sudo /opt/openocd/bin/openocd -c 'bindto 0.0.0.0' -f /opt/openocd/sample/akaria-ns31-arty-flyswatter2.cfg
* When you occur errors about "libftdi", try following a command
    $ sudo apt install libftdi1

7. Launch gdb
    $ /opt/riscv/riscv64-unknown-elf/bin/riscv64-unknown-elf-gdb  sample_blink_led.elf
    (gdb) target remote localhost:3333
    (gdb) monitor reset halt
    (gdb) load
    (gdb) c