How to read an EDIF netlist into Vivado that isn't the toplevel? #426
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shareefj
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this issue
Apr 12, 2024
This commit updates tools/vivado.py to allow the user to skip the
link_design step normally used after reading in a toplevel netlist.
The use case here is when an EDIF netlist, or any other netlist, is read
in as a submodule and is not the toplevel. In this case the link_design
step will fail as Vivado is expecting a netlist with the toplevel name.
In order to bypass the link_design step, use the no_link_design tag when
specifying the netlist in your Core file:
filesets:
netlist:
files:
- cute_a7_core/cute_a7_core.edf: { file_type: edif, tags: [no_link_design] }
shareefj
added a commit
to shareefj/edalize
that referenced
this issue
Apr 17, 2024
This commit updates tools/vivado.py to allow the user to skip the
link_design step normally used after reading in a toplevel netlist.
The use case here is when an EDIF netlist, or any other netlist, is read
in as a submodule and is not the toplevel. In this case the link_design
step will fail as Vivado is expecting a netlist with the toplevel name.
In order to bypass the link_design step, use the no_link_design tag when
specifying the netlist in your Core file:
filesets:
netlist:
files:
- cute_a7_core/cute_a7_core.edf: { file_type: edif, tags: [no_link_design] }
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I'm working with some IP where they supply an EDIF netlist and I want to read this in as a submodule. If I specify the source file as having a
file_type: edif, then thenetlist_flowboolean is set which in turn causes alink_designcommand to be run. Also see #425 for a bug here.https://github.com/olofk/edalize/blob/main/edalize/tools/vivado.py#L179
I can't say I've used a lot of EDIF netlists before so don't know when the
link_designcommand is required. In this case, if I just comment it out, then the flow completes without issue. Is it only needed if you're trying to read in a toplevel netlist?A simple fix looks to be to use the
tagsfield in the Core file to set something like ano_link_designflag.The text was updated successfully, but these errors were encountered: