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include README.md | ||
include README.rst |
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PyCoRAM | ||
======= | ||
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Python-based Portable IP-core Synthesis Framework for FPGA-based | ||
Computing | ||
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Copyright (C) 2013, Shinya Takamaeda-Yamazaki | ||
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E-mail: shinya\_at\_is.naist.jp | ||
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License | ||
======= | ||
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Apache License 2.0 (http://www.apache.org/licenses/LICENSE-2.0) | ||
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What's PyCoRAM? | ||
=============== | ||
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PyCoRAM is a Python-based portable IP-core synthesis framework with | ||
CoRAM (Connected RAM) memory architecture. | ||
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PyCoRAM framework generates a portable IP-core package from computing | ||
logic descriptions in Verilog HDL and memory access pattern descriptions | ||
in Python. Designers can easily build an FPGA-based custom accelerator | ||
using a generated IP-core with any common IP-cores on vendor-provided | ||
EDA tools. PyCoRAM framework includes (1) the Verilog-to-Verilog design | ||
translation compiler and (2) the Python-to-Verilog high-level synthesis | ||
(HLS) compiler for generating control circuits of memory operations. | ||
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There are some major differences between PyCoRAM and the original | ||
soft-logic implementation of CoRAM. | ||
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- Memory access pattern representation in Python | ||
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- The original CoRAM uses C language to represent a memory access | ||
pattern (called 'control thread'). | ||
- In PyCoRAM, you can easily describe them by using popular | ||
lightweight scripting language. | ||
- A Python script of memory access patterns is translated into an | ||
RT-level hardware design in Verilog HDL by the Python-to-Verilog | ||
high-level synthesis compiler. | ||
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- Commercial interconnect supports (AMBA AXI4 and Altera Avalon) | ||
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- The original CoRAM uses CONNECT to generate an on-chip | ||
interconnect. | ||
- PyCoRAM compiler generates a IP-core design with AMBA AXI4 or | ||
Altera Avalon. Both are commonly used on vendor-provided EDA | ||
tools. | ||
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- Parameterized RTL Design Support | ||
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- The original CoRAM has some limitations in Verilog HDL description | ||
of computing logic, such as no supports of generate statement. | ||
- PyCoRAM has a sophisticated RTL analyzer/translator to convert RTL | ||
descriptions into synthesizable IP-core package under memory | ||
abstractions of CoRAM. | ||
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Requirements | ||
============ | ||
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Software | ||
-------- | ||
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- Python (2.7 or later, 3.3 or later) | ||
- Icarus Verilog (0.9.6 or later) | ||
- 'iverilog -E' command is used for the preprocessor. | ||
- Jinja2 (2.7 or later) | ||
- The code generator uses Jinja2 template engine. | ||
- 'pip install jinja2' (for Python 2.x) or 'pip3 install jinja2' (for | ||
Python 3.x) | ||
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- Pyverilog (Python-based Verilog HDL Design Processing Toolkit) is | ||
already included in this package. | ||
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for RTL simulation | ||
~~~~~~~~~~~~~~~~~~ | ||
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- Icarus Verilog or Synopsys VCS | ||
- Icarus Verilog is an open-sourced Verilog simulator | ||
- VCS is a very fast commercial Verilog simulator | ||
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for bitstream synthesis | ||
~~~~~~~~~~~~~~~~~~~~~~~ | ||
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- Xilinx Platform Studio (14.6 or later) | ||
- Altera Qsys (14.0 or later) | ||
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(Recommended) FPGA Board | ||
------------------------ | ||
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- Digilent Atlys (Xilinx Spartan-6) | ||
- Xilinx ML605 (Xilinx Virtex-6) | ||
- Xilinx VC707 (Xilinx Virtex-7) | ||
- Altera DE2-115 (Altera Cyclone-4) | ||
- Altera Cyclone-5 GX Starter Kit | ||
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Installation | ||
============ | ||
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If you want to use PyCoRAM as a general library, you can install on your | ||
environment by using setup.py. | ||
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If Python 2.7 is used, | ||
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:: | ||
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python setup.py install | ||
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If Python 3.x is used, | ||
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:: | ||
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python3 setup.py install | ||
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Then you can use the pycoram command from your console (the version | ||
number depends on your environment). | ||
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:: | ||
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pycoram-0.9.0-py3.4.1 | ||
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Getting Started | ||
=============== | ||
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First, please make sure TARGET in 'base.mk' in 'sample' is correctly | ||
defined. If you use the installed pycoram command on your environment, | ||
please modify 'TARGET' in base.mk as below (the version number depends | ||
on your environment) | ||
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:: | ||
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TARGET=pycoram-0.9.0-py3.4.1 | ||
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You can find the sample projects in 'sample/tests/single\_memory'. | ||
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- ctrl\_thread.py : Control-thread definition in Python | ||
- userlogic.v : User-defined Verilog code using CoRAM memory blocks | ||
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Then type 'make' and 'make run' to simulate sample system. | ||
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:: | ||
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make build | ||
make sim | ||
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Or type commands as below directly. | ||
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:: | ||
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python pycoram/pycoram.py sample/default.config -t userlogic -I include/ sample/tests/single_memory/ctrl_thread.py sample/tests/single_memory/userlogic.v | ||
iverilog -I pycoram_userlogic_v1_00_a/hdl/verilog/ pycoram_userlogic_v1_00_a/test/test_pycoram_userlogic.v | ||
./a.out | ||
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PyCoRAM compiler generates a directory for IP-core | ||
(pycoram\_userlogic\_v1\_00\_a, in this example). | ||
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'pycoram\_userlogic\_v1\_00\_a.v' includes \* IP-core RTL design | ||
(hdl/verilog/pycoram\_userlogic.v) \* Test bench | ||
(test/test\_pycoram\_userlogic.v) \* XPS setting files | ||
(pycoram\_userlogic\_v2\_1\_0.{mpd,pao,tcl}) | ||
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A bit-stream can be synthesized by using Xilinx Platform Studio. Please | ||
copy the generated IP-core into 'pcores' directory of XPS project. | ||
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This software has some sample project in 'sample'. To build them, please | ||
modify 'Makefile', so that the corresponding files and parameters are | ||
selected (especially INPUT, MEMIMG and USERTEST) | ||
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PyCoRAM Command Options | ||
======================= | ||
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Command | ||
------- | ||
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:: | ||
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python pycoram.py [config] [-t topmodule] [-I includepath]+ [--memimg=filename] [--usertest=filename] [file]+ | ||
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Description | ||
----------- | ||
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- file | ||
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- User-logic Verilog file (.v) and control-thread definition file | ||
(.py). Automatically, .v file is recognized as a user-logic | ||
Verilog file, and .py file recongnized as a control-thread | ||
definition, respectively. | ||
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- config | ||
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- Configuration file which includes memory and device specification | ||
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- -t | ||
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- Name of user-defined top module, default is "userlogic". | ||
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- -I | ||
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- Include path for input Verilog HDL files. | ||
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- --memimg | ||
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- DRAM image file in HEX DRAM (option, if you need). The file is | ||
copied into test directory. If no file is assigned, the array is | ||
initialized with incremental values. | ||
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- --usertest | ||
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- User-defined test code file (option, if you need). The code is | ||
copied into testbench script. | ||
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Publication | ||
=========== | ||
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- Shinya Takamaeda-Yamazaki, Kenji Kise and James C. Hoe: PyCoRAM: Yet | ||
Another Implementation of CoRAM Memory Architecture for Modern | ||
FPGA-based Computing, The Third Workshop on the Intersections of | ||
Computer Architecture and Reconfigurable Logic (CARL 2013) | ||
(Co-located with MICRO-46), December 2013. | ||
`Paper <http://users.ece.cmu.edu/~jhoe/distribution/2013/carl13pycoram.pdf>`__ | ||
`Slide <http://www.slideshare.net/shtaxxx/pycoramcarl2013>`__ | ||
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Related Project | ||
=============== | ||
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`Pyverilog <http://shtaxxx.github.io/Pyverilog/>`__ - Python-based | ||
Hardware Design Processing Toolkit for Verilog HDL - Used as basic code | ||
analyser and generator in PyCoRAM | ||
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`CoRAM <http://www.ece.cmu.edu/coram/doku.php?id=home>`__ - A General | ||
Purpose Memory Architecture for FPGAs - The original CoRAM developed at | ||
CMU |
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[metadata] | ||
description-file = README.md | ||
description-file = README.rst |
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