Jan Kowalewski

Symbiflow further enhancements

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This PR consists of following changes regarding the symbiflow toolchain: * Add fasm2bels feature - this feature enables to generate e.g. `.dcp` files from symbiflow workflow output, which can be...

This PR adds: * support for nexys_video in litex tests * litesata example for nexys video board Depends on: * https://github.com/SymbiFlow/symbiflow-arch-defs/pull/2003 * https://github.com/litex-hub/litex-boards/pull/171

Partial bitstream support litex test

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This PR introduces a LiteX test with enabled partial reconfiguration feature. Dependencies: PR with the partial bitstream generation feature: https://github.com/SymbiFlow/symbiflow-arch-defs/pull/1808 LiteX branch: https://github.com/antmicro/litex/tree/symbiflow_partial_reconfiguration_support XDC plugin SYN_BUFs support: https://github.com/SymbiFlow/yosys-symbiflow-plugins/pull/68

Partial bitstream support

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This PR adds partial bitstream generation support to the `switch_processing` example. Submodule dependencies: prjxray: https://github.com/SymbiFlow/prjxray/pull/1492 xc-fasm: https://github.com/SymbiFlow/xc-fasm/pull/6

WIP: interchange: add BELs chain support

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Initial support for BELs chains. Related to: * https://github.com/SymbiFlow/nextpnr/issues/262 * https://github.com/SymbiFlow/python-fpga-interchange/pull/70 Signed-off-by: Jan Kowalewski