- _____ _ ____ _ _ _ _
- | __|___ |_|___ _ _ | \|_|___|_| |_ ___| |
- | __| | | | . | | | | | | | . | | _| .'| |
- |_____|_|_|_| |___|_ | |____/|_|_ |_|_| |__,|_|
- |___| |___| |___|
-
- Copyright 2012-2014 / Florent Kermarrec / florent@enjoy-digital.fr
-
- Miscope
---------------------------------------------------------------------------------
+ __ _ __ _ __
+ / / (_) /____ | |/_/
+ / /__/ / __/ -_)> <
+ /____/_/\__/\__/_/|_|
+ Migen inside
-[> Miscope
-------------
+ Build your hardware, easily!
+ Copyright 2012-2018 / EnjoyDigital
-Miscope is a small logic analyzer to embed in an FPGA.
+[> 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)
-While free vendor toolchains are generally used by beginners or for prototyping
-(situations where having a logic analyzer in the design is generally helpful)
-free toolchains are always provided without the proprietary logic analyzer
-solution... :(
+Typical LiteX design flow:
+--------------------------
-Baseid on Migen, Miscope aims to provide a free, portable and flexible
-alternatve to vendor's solutions!
+ +---------------+
+ |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
-[> Specification:
-Miscope provides Migen cores to embed in the design and Python drivers to control
-the logic analyzer from the Host. Miscope automatically interconnects all cores
-to a CSR bus. When using Python on the Host, no needs to worry about cores register
-mapping, importing miscope project gives you direct access to all the cores!
+LiteX already supports various softcores CPUs: LM32, Mor1kx, PicoRV32, VexRiscv
+and is compatible with the LiteX's Cores Ecosystem:
-Miscope produces .vcd output files to be analyzed in your favorite waveform viewer.
+- LiteDRAM: https://github.com/enjoy-digital/litedram
+- LiteEth: https://github.com/enjoy-digital/liteeth
+- LitePCIe: https://github.com/enjoy-digital/litepcie
+- LiteSATA: https://github.com/enjoy-digital/litesata
+- LiteUSB: https://github.com/enjoy-digital/litesata
+- LiteSDCard: https://github.com/enjoy-digital/litesdcard
+- LiteICLink: https://github.com/enjoy-digital/liteiclink
+- LiteJESD204B: https://github.com/enjoy-digital/litejesd204b
+- LiteVideo: https://github.com/enjoy-digital/litevideo
+- LiteScope: https://github.com/enjoy-digital/litescope
-Since Miscope also provides an Uart2Wishbone bridge, you only need 2 external Rx/Tx
-pins to be ready to debug!
-[> Status:
-MiIo & Mila working on board with standard term.
-RLE working on board.
-RangeDetector and EdgeDector terms not tested.
+[> Sub-packages
+---------------
+gen:
+ Provides specific or experimental modules to generate HDL that are not integrated
+ in Migen.
-[> Examples:
-Have a look at http://github.com/Florent-Kermarrec/misoc-de0nano
-miio.py : Led & Switch Test controlled by Python Host.
-mila.py : Logic Analyzer controlled by Python Host.
+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. All Migen's platforms
+ can also be used in LiteX.
+
+[> Very Quick start guide (for newcomers)
+-----------------------------------------
+TimVideos.us has done an awesome job for setting up a LiteX environment easily in
+the litex-buildenv repo: https://github.com/timvideos/litex-buildenv
+
+It's recommended for newcomers to go this way. Various FPGA boards are supported
+and multiple examples provided! You can even run Linux on your FPGA using LiteX
+very easily!
+
+Migen documentation can be found here: https://m-labs.hk/migen/manual
+
+FPGA lessons/tutorials can be found at: https://github.com/enjoy-digital/fpga_101
+
+[> Medium Quick start guide with Conda
+-----------------------------------------
+
+0. Get miniconda by following instructions at https://conda.io/miniconda.html
+
+1. Clone LiteX
+ git clone --recurse-submodules https://github.com/enjoy-digital/litex.git
+
+2. Create a LiteX environment from environment.yml
+ conda env create -f environment.yml
+
+3. Enter conda environment
+ conda activate litex
+
+4. Build the target of your board...:
+ Go to boards/targets and execute the target you want to build
+
+
+[> Quick start guide (for advanced users)
+-----------------------------------------
+0. Install Python 3.5+ and FPGA vendor's development tools.
+
+1. Get litex_setup.py script and execute:
+ ./litex_setup.py init install
+ This will clone and install Migen, LiteX and LiteX's cores.
+ To update all repositories execute:
+ ./litex_setup.py update
+
+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@enjoy-digital.fr
+----------
+E-mail: florent [AT] enjoy-digital.fr