litex/README

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                      / /  (_) /____ | |/_/
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                         Migen inside

                Build your hardware, easily!
              Copyright 2012-2018 / EnjoyDigital

[> Intro
--------
LiteX is an alternative to MiSoC maintained and used by Enjoy-Digital to build
our cores, integrate them in complete SoC and load/flash them to the hardware
and experiment new features. (structure is kept close to MiSoC to ease
collaboration)

Typical LiteX design flow:
--------------------------

                        +---------------+
                        |FPGA toolchains|
                        +----^-----+----+
                             |     |
                          +--+-----v--+
         +-------+        |           |
         | Migen +-------->           |
         +-------+        |           |        Your design
                          |   LiteX   +---> ready to be used!
                          |           |
+----------------------+  |           |
|LiteX Cores Ecosystem +-->           |
+----------------------+  +-^-------^-+
 (Eth, SATA, DRAM, USB,     |       |
  PCIe, Video, etc...)      +       +
                           board   target
                           file    file


[> Sub-packages
---------------
gen:
  Provides specific or experimental modules to generate HDL that are not integrated
  in Migen.

build:
  Provides tools to build FPGA bitstreams (interface to vendor toolchains) and to
  simulate HDL code or full SoCs.

soc:
  Provides definitions/modules to build cores (bus, bank, flow), cores and tools
  to build a SoC from such cores.

boards:
  Provides platforms and targets for the supported boards.

[> Quick start guide
--------------------
0. If cloned from Git without the --recursive option, get the submodules:
  git submodule update --init

1. Install Python 3.3+ and FPGA vendor's development tools and JTAG tools.

2. Compile and install binutils. Take the latest version from GNU.
  mkdir build && cd build
  ../configure --target=lm32-elf
  make
  make install

3. (Optional, only if you want to use a lm32 CPU in you SoC)
  Compile and install GCC. Take gcc-core and gcc-g++ from GNU
  (version 4.5 or >=4.9).
  rm -rf libstdc++-v3
  mkdir build && cd build
  ../configure --target=lm32-elf --enable-languages="c,c++" --disable-libgcc \
    --disable-libssp
  make
  make install

4. Build the target of your board...:
  Go to boards/targets and execute the target you want to build

5. ... and/or install Verilator and test LiteX on your computer:
  Download and install Verilator: http://www.veripool.org/
  Install libevent-devel / json-c-devel packages
  Go to boards/targets
  ./sim.py

6. Run a terminal program on the board's serial port at 115200 8-N-1.
  You should get the BIOS prompt.

[> Contact
----------
E-mail: florent [AT] enjoy-digital.fr