60 lines
1.9 KiB
ReStructuredText
60 lines
1.9 KiB
ReStructuredText
|
Linux LiteX demo
|
||
|
|
~~~~~~~~~~~~~~~~
|
||
|
|
|
||
|
|
This example design features a Linix-capable SoC based around VexRiscv soft
|
||
|
|
CPU. It also includes DDR and Ethernet controllers. To build the litex example,
|
||
|
|
run the following commands:
|
||
|
|
|
||
|
|
.. code-block:: bash
|
||
|
|
:name: example-litex-deps
|
||
|
|
|
||
|
|
wget https://raw.githubusercontent.com/enjoy-digital/litex/master/litex_setup.py;
|
||
|
|
chmod +x litex_setup.py;
|
||
|
|
./litex_setup.py init;
|
||
|
|
./litex_setup.py install;
|
||
|
|
wget https://static.dev.sifive.com/dev-tools/riscv64-unknown-elf-gcc-8.1.0-2019.01.0-x86_64-linux-ubuntu14.tar.gz;
|
||
|
|
tar -xf riscv64-unknown-elf-gcc-8.1.0-2019.01.0-x86_64-linux-ubuntu14.tar.gz;
|
||
|
|
export PATH=$PATH:$PWD/riscv64-unknown-elf-gcc-8.1.0-2019.01.0-x86_64-linux-ubuntu14/bin/;
|
||
|
|
pushd litex/litex/boards/targets && ./arty.py --toolchain symbiflow --cpu-type vexriscv --build && popd
|
||
|
|
|
||
|
|
To build the linux-litex-demo example, depending on your hardware, run:
|
||
|
|
|
||
|
|
.. code-block:: bash
|
||
|
|
:name: example-litex-a35t-group
|
||
|
|
|
||
|
|
TARGET="arty_35" make -C linux_litex_demo
|
||
|
|
|
||
|
|
.. code-block:: bash
|
||
|
|
:name: example-litex-a100t-group
|
||
|
|
|
||
|
|
TARGET="arty_100" make -C linux_litex_demo
|
||
|
|
|
||
|
|
Now you can upload the design with:
|
||
|
|
|
||
|
|
.. code-block:: bash
|
||
|
|
|
||
|
|
openocd -f ${INSTALL_DIR}/conda/share/openocd/scripts/board/digilent_arty.cfg -c "init; pld load 0 top.bit; exit"
|
||
|
|
|
||
|
|
.. note::
|
||
|
|
|
||
|
|
LiteX on Linux demo excepts you to use IPv4 address of ``192.168.100.100/24``
|
||
|
|
on your network interface.
|
||
|
|
|
||
|
|
You should observe the following line in the OpenOCD output
|
||
|
|
|
||
|
|
.. code-block:: bash
|
||
|
|
|
||
|
|
Info : JTAG tap: xc7.tap tap/device found: 0x0362d093 (mfg: 0x049 (Xilinx), part: 0x362d, ver: 0x0)
|
||
|
|
|
||
|
|
In the ``picocom`` terminal, you should observe the following output:
|
||
|
|
|
||
|
|
.. image:: ../../docs/images/linux-example-console.gif
|
||
|
|
:align: center
|
||
|
|
:width: 80%
|
||
|
|
|
||
|
|
Additionally, two LED's on the board should be turned on
|
||
|
|
|
||
|
|
.. image:: ../../docs/images/linux-example-arty.jpg
|
||
|
|
:width: 49%
|
||
|
|
:align: center
|