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a high performance and small footprint SoC based on Migen
[> Features
-----------
* LatticeMico32 CPU, modified to include an optional MMU (experimental).
* mor1kx (a better OpenRISC implementation) as alternative CPU option.
* High performance memory controller capable of issuing several SDRAM commands
per FPGA cycle.
* Supports SDR, DDR, LPDDR and DDR2.
* Provided peripherals: UART, GPIO, timer, GPIO, NOR flash controller, SPI
flash controller, Ethernet MAC, and more.
* High performance: on Spartan-6, 83MHz system clock frequencies, 10+Gbps DDR
SDRAM bandwidth, 1080p 32bpp framebuffer, etc.
* Low resource usage: basic implementation fits easily in Spartan-6 LX9.
* Portable and easy to customize thanks to Python- and Migen-based
architecture.
* Design new peripherals using Migen and benefit from automatic CSR maps
and logic, etc.
* Possibility to encapsulate legacy Verilog/VHDL code.
MiSoC comes with built-in support for the following boards:
* Mixxeo, the digital video mixer from M-Labs [XC6SLX45]
* Milkymist One, the original M-Labs video synthesizer [XC6SLX45]
* Papilio Pro, a simple and low-cost development board [XC6SLX9]
* KC705, a Kintex-7 devboard from Xilinx [XC7K325T]
MiSoC is portable and support for other boards can easily be added as external
modules.
[> Quick start guide
--------------------
1. Install Python 3.3+, Migen and FPGA vendor's development tools.
Get Migen from: https://github.com/m-labs/migen
2. Install JTAG tools.
For Mixxeo and M1: http://urjtag.org
For Papilio Pro and KC705: http://xc3sprog.sourceforge.net
3. Obtain and build any required flash proxy bitstreams. Flash proxy bitstreams
give JTAG access to a flash chip through the FPGA.
For Mixxeo and M1: https://github.com/m-labs/fjmem-m1
For Papilio Pro: https://github.com/GadgetFactory/Papilio-Loader
(xc3sprog/trunk/bscan_spi/bscan_spi_lx9_papilio.bit)
4. Compile and install binutils. Take the latest version from GNU.
mkdir build && cd build
../configure --target=lm32-elf
make
make install
5. 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
6. Obtain compiler-rt and set the CRTDIR environment variable to the root of
its source tree.
svn co http://llvm.org/svn/llvm-project/compiler-rt/trunk compiler-rt
export CRTDIR=/path_to/compiler-rt
7. Build and flash the BIOS and bitstream. Run from MiSoC:
For Mixxeo: ./make.py all
For M1: ./make.py -p m1 all
For Papilio Pro: ./make.py -t ppro all
For KC705: ./make.py -t kc705 all
8. Run a terminal program on the board's serial port at 115200 8-N-1.
You should get the BIOS prompt.
9. Read and experiment with the source!
Come to our IRC channel and mailing list!
[> License
----------
MiSoC is released under the very permissive two-clause BSD license. Under
the terms of this license, you are authorized to use MiSoC for
closed-source proprietary designs.
Even though we do not require you to do so, those things are awesome, so please
do them if possible:
* tell us that you are using MiSoC
* cite MiSoC in publications related to research it has helped
* send us feedback and suggestions for improvements
* send us bug reports when something goes wrong
* send us the modifications and improvements you have done to MiSoC.
The use of "git format-patch" is recommended. If your submission is large and
complex and/or you are not sure how to proceed, feel free to discuss it on
the mailing list or IRC (#m-labs on Freenode) beforehand.
See LICENSE file for full copyright and license info.
[> Links
--------
Web:
http://m-labs.hk
Code repository:
https://github.com/m-labs/misoc
You can contact us on the public mailing list devel [AT] lists.m-labs.hk.
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