fpga: Add READMEs describing Lattice and ADI IP sourcing

Original-commit: 9bd160663c4da345ee79bef4c2d43b672633f938
This commit is contained in:
Aaron Rossetto
2022-07-14 16:26:03 -05:00
committed by skooNI
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This files in this directory and associated subdirectories bearing Analog
Devices Inc.'s (ADI) copyright notice are available (albeit updated versions
compared to these files) from Analog Devices' GitHub repository[1] containing
HDL libraries for various reference designs. This repository contains a license
file[2] that dictates the terms of use of the ADI IP.
The `axi_dmac`, `util_axis_fifo`, and `util_axis_resize` modules are offered
under either a GPLv2[3] or ADI-specific BSD[4] license. See, for example,
the copyright notices in [5], [6], and [7].
[1] https://github.com/analogdevicesinc/hdl
[2] https://github.com/analogdevicesinc/hdl/blob/master/LICENSE
[3] https://github.com/analogdevicesinc/hdl/blob/master/LICENSE_GPL2
[4] https://github.com/analogdevicesinc/hdl/blob/master/LICENSE_ADIBSD
[5] https://github.com/analogdevicesinc/hdl/blob/master/library/axi_dmac/axi_dmac.v
[6] https://github.com/analogdevicesinc/hdl/blob/master/library/util_axis_fifo/util_axis_fifo.v
[7] https://github.com/analogdevicesinc/hdl/blob/master/library/util_axis_resize/util_axis_resize.v
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The files in this directory and its associated subdirectories bearing Lattice
Semiconductor's copyright notice were sourced from the `general-cores` module of
the Open Hardware Repository[1]. Specifically, these files were taken from the
portion of the repository[2] that provides support for Lattice Semiconductor's
open-source LatticeMico (LM32) CPU core and some associated IP for use with the
White Rabbit project.
The README.txt file[3] in the LM32 portion of the repository acknowledges
Lattice Semiconductor for making the LM32 core open-source, but there is no
license information provided with these files in that repository. However,
m-labs' GitHub repository[4] maintains a fork of the version of the LM32 core
and associated IP, which contains the original license file from Lattice[5].
[1] https://ohwr.org
[2] https://ohwr.org/project/general-cores/blob/master/modules/wishbone/wb_lm32
[3] https://ohwr.org/project/general-cores/blob/master/modules/wishbone/wb_lm32/README.txt
[4] https://github.com/m-labs
[5] https://github.com/m-labs/lm32/blob/master/LICENSE.LATTICE