Create a SDF file canonicalizer

[mithro]

We need a tool which takes a SDF file and generates a "canonical" form. It probably wants to sort via INSTANCE and then CELLTYPE.

Currently we get SLICEL and SLICEM timing information stored together;

    (CELL
        (CELLTYPE "SELMUX2_1")
        (INSTANCE SLICEL/F7AMUX)
        (DELAY
            (ABSOLUTE
                (IOPATH 0 OUT (0.053::0.067)(0.153::0.190))
                (IOPATH 1 OUT (0.055::0.069)(0.156::0.193))
                (IOPATH S0 OUT (0.085::0.106)(0.222::0.276))
            )
        )
    )
    (CELL
        (CELLTYPE "LUT_OR_MEM5LRAM")
        (INSTANCE SLICEM/B5LUT)
        (DELAY
            (ABSOLUTE
                (IOPATH A1 O5 (0.045::0.056)(0.122::0.152))
                (IOPATH A2 O5 (0.044::0.055)(0.122::0.152))
                (IOPATH A3 O5 (0.043::0.053)(0.121::0.150))
                (IOPATH A4 O5 (0.047::0.058)(0.121::0.150))
                (IOPATH A5 O5 (0.048::0.060)(0.094::0.117))
                (IOPATH CLK O5 (0.348::0.434)(0.957::1.187))
            )
        )
        (TIMINGCHECK
            (HOLD CLK (posedge CLK) (0.154::0.191))
            (SETUP CLK (posedge CLK) (0.250::0.311))
        )
    )
    (CELL
        (CELLTYPE "LUT_OR_MEM5SHFREG")
        (INSTANCE SLICEM/B5LUT)
        (DELAY
            (ABSOLUTE
                (IOPATH CLK O5 (0.439::0.547)(1.190::1.476))
            )
        )
        (TIMINGCHECK
            (HOLD CLK (posedge CLK) (0.070::0.087))
            (SETUP CLK (posedge CLK) (0.126::0.156))
        )
    )
    (CELL
        (CELLTYPE "LUT6")
        (INSTANCE SLICEL/C6LUT)
        (DELAY
            (ABSOLUTE
                (IOPATH A1 O6 (0.045::0.056)(0.100::0.124))
                (IOPATH A2 O6 (0.045::0.056)(0.100::0.124))
                (IOPATH A3 O6 (0.045::0.056)(0.100::0.124))
                (IOPATH A4 O6 (0.045::0.056)(0.100::0.124))
                (IOPATH A5 O6 (0.045::0.056)(0.100::0.124))
                (IOPATH A6 O6 (0.045::0.056)(0.100::0.124))
            )
        )
    )

[kgugala]

a basic version of such tool already exists see: https://github.com/SymbiFlow/prjxray/blob/master/utils/sdfmerge.py

@mithro do you think it should be part of this lib?

GitHub

SymbiFlow/prjxray

Documenting the Xilinx 7-series bit-stream format. - SymbiFlow/prjxray

[mithro]

@kgugala Yes.