Use nextpnr-xilinx for Genesys2/xc7k325t: prjxray/prjxray/fasm_assembler.py fails

[unbtorsten]

The following steps are similar to those outlined in https://github.com/kintex-chatter/xc7k325t-blinky-nextpnr/blob/main/README.md. I repeat them explicitly below, since there have been different errors popping up:

• Using the latest yosys 0.13+28 (git sha1 bf85dfee5, gcc 10.2.1-6 -fPIC -Os), available from https://github.com/YosysHQ/oss-cad-suite-build/releases or build from sources
• Patching nextpnr-xilinx/xilinx-upstream-k7 based on hansfbaier's recommendation: openXC7/nextpnr-xilinx@1c89de2
• Using prjxray-db for xc7k325t from jrrk2: https://github.com/jrrk2/prjxray-db/tree/k325/kintex7
• Adapting the basic nextpnr readme instructions for the branch nextpnr-xilinx/xilinx-upstream-k7:

1. Run pypy3 xilinx/python/bbaexport.py --device xc7k325tffg900-2 --bba xilinx/xc7k325t.bba
2. Run ./bbasm xilinx/xc7k325t.bba xilinx/xc7k325t.bin -l
3. Set XRAY_DIR to the path where Project Xray has been cloned and built (you may also need to patch out the Vivado check for utils/environment.sh in Xray)
4. Run blinky.sh in xilinx/examples/genesys2 (may need to adjust binary paths)

Output seems to point to an issue with the documented cells. Does this point us back to doing a better job at documenting, i.e. building prjxray-db?

${XRAY_UTILS_DIR}/fasm2frames.py --part xc7k325tffg900-2 --db-root
${XRAY_UTILS_DIR}/../database/kintex7 blinky.fasm > blinky.frames
Traceback (most recent call last):
  File "prjxray/utils/fasm2frames.py", line 315, in <module>
    main()
  File "prjxray/utils/fasm2frames.py", line 303, in main
    run(
  File "prjxray/utils/fasm2frames.py", line 188, in run
    assembler.parse_fasm_filename(filename_in,
extra_features=extra_features)
  File "prjxray/prjxray/fasm_assembler.py", line 190, in
parse_fasm_filename
    raise FasmLookupError('\n'.join(missing_features))
prjxray.fasm_assembler.FasmLookupError: Segment DB RIOB18, key RIOB18.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18.SLEW.SLOW not found from line 'RIOB18_X95Y75.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18.SLEW.SLOW'
Segment DB RIOB18, key RIOB18.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135_SSTL135_DCI_SSTL15_SSTL15_DCI.IN_ONLY not found from line 'RIOB18_X95Y75.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135_SSTL135_DCI_SSTL15_SSTL15_DCI.IN_ONLY'
Segment DB RIOB18, key RIOB18.IOB_Y0.LVDS_SSTL135_SSTL15.IN_DIFF not found from line 'RIOB18_X95Y75.IOB_Y0.LVDS_SSTL135_SSTL15.IN_DIFF'
Segment DB RIOB18, key RIOB18.IOB_Y0.PULLTYPE.NONE not found from line 'RIOB18_X95Y75.IOB_Y0.PULLTYPE.NONE'
Segment DB RIOB18, key RIOB18.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18.SLEW.SLOW not found from line 'RIOB18_X95Y75.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18.SLEW.SLOW'
Segment DB RIOB18, key RIOB18.IOB_Y1.LVCMOS12_LVCMOS15_SSTL135_SSTL135_DCI_SSTL15_SSTL15_DCI.IN_ONLY not found from line 'RIOB18_X95Y75.IOB_Y1.LVCMOS12_LVCMOS15_SSTL135_SSTL135_DCI_SSTL15_SSTL15_DCI.IN_ONLY'
Segment DB RIOB18, key RIOB18.IOB_Y1.PULLTYPE.NONE not found from line 'RIOB18_X95Y75.IOB_Y1.PULLTYPE.NONE'
Segment DB LIOB33, key LIOB33.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW not found from line 'LIOB33_X0Y127.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW'
Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW not found from line 'LIOB33_X0Y111.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW'
Segment DB LIOB33, key LIOB33.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW not found from line 'LIOB33_X0Y119.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW'
Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW not found from line 'LIOB33_X0Y119.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW'
Segment DB LIOB33, key LIOB33.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW not found from line 'LIOB33_X0Y111.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW'
Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW not found from line 'LIOB33_X0Y117.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW'
Segment DB LIOB33, key LIOB33.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW not found from line 'LIOB33_X0Y109.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW'
Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW not found from line 'LIOB33_X0Y109.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW'
Segment DB LIOB33_SING, key LIOB33_SING.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY not found from line 'LIOB33_SING_X0Y299.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY'
Segment DB LIOB33_SING, key LIOB33_SING.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN not found from line 'LIOB33_SING_X0Y299.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN'
Segment DB LIOB33_SING, key LIOB33_SING.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY not found from line 'LIOB33_SING_X0Y200.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY'
Segment DB LIOB33_SING, key LIOB33_SING.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN not found from line 'LIOB33_SING_X0Y200.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN'
Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY not found from line 'LIOB33_X0Y211.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY'
Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN not found from line 'LIOB33_X0Y211.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN'
Segment DB LIOB33, key LIOB33.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN not found from line 'LIOB33_X0Y211.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN'
Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY not found from line 'LIOB33_X0Y287.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY'
Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN not found from line 'LIOB33_X0Y287.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN'
Segment DB LIOB33, key LIOB33.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN not found from line 'LIOB33_X0Y287.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN'
Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY not found from line 'LIOB33_X0Y161.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY'
Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN not found from line 'LIOB33_X0Y161.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN'
Segment DB LIOB33, key LIOB33.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN not found from line 'LIOB33_X0Y161.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN'
Segment DB LIOB33_SING, key LIOB33_SING.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY not found from line 'LIOB33_SING_X0Y150.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY'
Segment DB LIOB33_SING, key LIOB33_SING.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN not found from line 'LIOB33_SING_X0Y150.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN'
Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY not found from line 'LIOB33_X0Y129.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY'
Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY not found from line 'LIOB33_X0Y133.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY'
Segment DB RIOI, key RIOI.ILOGIC_Y0.ZINV_D not found from line 'RIOI_X95Y75.ILOGIC_Y0.ZINV_D'
Segment DB RIOI, key RIOI.RIOI_I2GCLK_TOP0.IOI_ILOGIC0_O not found from line 'RIOI_X95Y75.RIOI_I2GCLK_TOP0.IOI_ILOGIC0_O'
Segment DB RIOI, key RIOI.RIOI_I0.RIOI_IBUF0 not found from line 'RIOI_X95Y75.RIOI_I0.RIOI_IBUF0'
Segment DB RIOI, key RIOI.RIOI_ILOGIC0_D.RIOI_I0 not found from line 'RIOI_X95Y75.RIOI_ILOGIC0_D.RIOI_I0'

[hansfbaier]

Did you try to build the QMTech part, just to see if your toolchain installation is fine? I actually used the default branch of nextpnr-xilinx, not the k7 branch. I wonder what the difference is, might want to do a diff. Am Mi., 2. Feb. 2022 um 09:48 Uhr schrieb unbtorsten < ***@***.***>:

…

The following steps are similar to those outlined in https://github.com/kintex-chatter/xc7k325t-blinky-nextpnr/blob/main/README.md. I repeat them explicitly below, since there have been different errors popping up: - Using the latest yosys 0.13+28 (git sha1 bf85dfee5, gcc 10.2.1-6 -fPIC -Os), available from https://github.com/YosysHQ/oss-cad-suite-build/releases or build from sources - Patching nextpnr-xilinx/xilinx-upstream-k7 based on hansfbaier's recommendation: ***@***.*** <openXC7/nextpnr-xilinx@1c89de2> - Using prjxray-db for xc7k325t from jrrk2: https://github.com/jrrk2/prjxray-db/tree/k325/kintex7 - Adapting the basic nextpnr readme instructions for the branch nextpnr-xilinx/xilinx-upstream-k7: 1. Run pypy3 xilinx/python/bbaexport.py --device xc7a35tcsg324-1 --bba xilinx/xc7a35t.bba (regular cpython works as well, but is a lot slower) 2. Run ./bbasm xilinx/xc7k325t.bba xilinx/xc7k325t.bin -l (add option for little endian) 3. Set XRAY_DIR to the path where Project Xray has been cloned and built (you may also need to patch out the Vivado check for utils/environment.sh in Xray) 4. Run blinky.sh in xilinx/examples/genesys2 (may need to adjust binary paths) Output seems to point to an issue with the documented cells. Does this point us back to doing a better job at documenting, i.e. building prjxray-db? ${XRAY_UTILS_DIR}/fasm2frames.py --part xc7k325tffg900-2 --db-root ${XRAY_UTILS_DIR}/../database/kintex7 blinky.fasm > blinky.frames Traceback (most recent call last): File "prjxray/utils/fasm2frames.py", line 315, in <module> main() File "prjxray/utils/fasm2frames.py", line 303, in main run( File "prjxray/utils/fasm2frames.py", line 188, in run assembler.parse_fasm_filename(filename_in, extra_features=extra_features) File "prjxray/prjxray/fasm_assembler.py", line 190, in parse_fasm_filename raise FasmLookupError('\n'.join(missing_features)) prjxray.fasm_assembler.FasmLookupError: Segment DB RIOB18, key RIOB18.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18.SLEW.SLOW not found from line 'RIOB18_X95Y75.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18.SLEW.SLOW' Segment DB RIOB18, key RIOB18.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135_SSTL135_DCI_SSTL15_SSTL15_DCI.IN_ONLY not found from line 'RIOB18_X95Y75.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135_SSTL135_DCI_SSTL15_SSTL15_DCI.IN_ONLY' Segment DB RIOB18, key RIOB18.IOB_Y0.LVDS_SSTL135_SSTL15.IN_DIFF not found from line 'RIOB18_X95Y75.IOB_Y0.LVDS_SSTL135_SSTL15.IN_DIFF' Segment DB RIOB18, key RIOB18.IOB_Y0.PULLTYPE.NONE not found from line 'RIOB18_X95Y75.IOB_Y0.PULLTYPE.NONE' Segment DB RIOB18, key RIOB18.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18.SLEW.SLOW not found from line 'RIOB18_X95Y75.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18.SLEW.SLOW' Segment DB RIOB18, key RIOB18.IOB_Y1.LVCMOS12_LVCMOS15_SSTL135_SSTL135_DCI_SSTL15_SSTL15_DCI.IN_ONLY not found from line 'RIOB18_X95Y75.IOB_Y1.LVCMOS12_LVCMOS15_SSTL135_SSTL135_DCI_SSTL15_SSTL15_DCI.IN_ONLY' Segment DB RIOB18, key RIOB18.IOB_Y1.PULLTYPE.NONE not found from line 'RIOB18_X95Y75.IOB_Y1.PULLTYPE.NONE' Segment DB LIOB33, key LIOB33.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW not found from line 'LIOB33_X0Y127.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW' Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW not found from line 'LIOB33_X0Y111.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW' Segment DB LIOB33, key LIOB33.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW not found from line 'LIOB33_X0Y119.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW' Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW not found from line 'LIOB33_X0Y119.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW' Segment DB LIOB33, key LIOB33.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW not found from line 'LIOB33_X0Y111.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW' Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW not found from line 'LIOB33_X0Y117.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW' Segment DB LIOB33, key LIOB33.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW not found from line 'LIOB33_X0Y109.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW' Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW not found from line 'LIOB33_X0Y109.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.SLEW.SLOW' Segment DB LIOB33_SING, key LIOB33_SING.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY not found from line 'LIOB33_SING_X0Y299.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY' Segment DB LIOB33_SING, key LIOB33_SING.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN not found from line 'LIOB33_SING_X0Y299.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN' Segment DB LIOB33_SING, key LIOB33_SING.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY not found from line 'LIOB33_SING_X0Y200.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY' Segment DB LIOB33_SING, key LIOB33_SING.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN not found from line 'LIOB33_SING_X0Y200.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN' Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY not found from line 'LIOB33_X0Y211.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY' Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN not found from line 'LIOB33_X0Y211.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN' Segment DB LIOB33, key LIOB33.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN not found from line 'LIOB33_X0Y211.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN' Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY not found from line 'LIOB33_X0Y287.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY' Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN not found from line 'LIOB33_X0Y287.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN' Segment DB LIOB33, key LIOB33.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN not found from line 'LIOB33_X0Y287.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN' Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY not found from line 'LIOB33_X0Y161.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY' Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN not found from line 'LIOB33_X0Y161.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN' Segment DB LIOB33, key LIOB33.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN not found from line 'LIOB33_X0Y161.IOB_Y1.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN' Segment DB LIOB33_SING, key LIOB33_SING.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY not found from line 'LIOB33_SING_X0Y150.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY' Segment DB LIOB33_SING, key LIOB33_SING.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN not found from line 'LIOB33_SING_X0Y150.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_SSTL135.STEPDOWN' Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY not found from line 'LIOB33_X0Y129.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY' Segment DB LIOB33, key LIOB33.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY not found from line 'LIOB33_X0Y133.IOB_Y0.LVCMOS12_LVCMOS15_LVCMOS18_LVCMOS25_LVCMOS33_LVTTL_SSTL135.IN_ONLY' Segment DB RIOI, key RIOI.ILOGIC_Y0.ZINV_D not found from line 'RIOI_X95Y75.ILOGIC_Y0.ZINV_D' Segment DB RIOI, key RIOI.RIOI_I2GCLK_TOP0.IOI_ILOGIC0_O not found from line 'RIOI_X95Y75.RIOI_I2GCLK_TOP0.IOI_ILOGIC0_O' Segment DB RIOI, key RIOI.RIOI_I0.RIOI_IBUF0 not found from line 'RIOI_X95Y75.RIOI_I0.RIOI_IBUF0' Segment DB RIOI, key RIOI.RIOI_ILOGIC0_D.RIOI_I0 not found from line 'RIOI_X95Y75.RIOI_ILOGIC0_D.RIOI_I0' — Reply to this email directly, view it on GitHub <#1>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AABEI7ZDJOMCYXMRURVRED3UZCLQDANCNFSM5NK36UFQ> . 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[unbtorsten]

Good guess.. I run into the same issue in case of the QMTech part. Looks like we need to do some more differential testing.
Difference that I see right now:

• I used the -k7 branch.
• I did not sudo make install nextpnr-xilinx

Update: the difference lies in the upstream-xilinx-k7 branch:
I am able to build the QMTech part with the main branch and am confronted with an assertion failure in case of Genesys2 part (xc7k325tffg9000-2):

Info: Packing constants..
Info: Inserting IO buffers..
Info:     IO port 'clk' driven by IBUF '$iopadmap$top.clk'
Info:     IO port 'led' driven by OBUF '$iopadmap$top.led'
Info:     Constraining 'clk' to site 'IOB_X1Y24'
Info:     Constraining 'led' to site 'IOB_X0Y127'
Info: Generating input buffer for '$iopadmap$top.clk'
terminate called after throwing an instance of 'nextpnr_xilinx::assertion_failure'
  what():  Assertion failure: s != -1 (nextpnr-xilinx/xilinx/arch.h:1602)
Aborted

The assertion failure does not occur when using the -k7 branch, however, then you are facing the Python error outlined above.

[hansfbaier]

I just found this out independently, the nextpnr-xilinx-k7 branch seems to be no good any more (stale?): see here

[hansfbaier]

I just adjusted the README so that other users don't fall into the same trap

[unbtorsten]

[...], the nextpnr-xilinx-k7 branch seems to be no good any more (stale?): see here

Are you saying that it used to work for you at some point?

[jrrk2]

Genesys2 assertion failure goes away when constraints are changed. See this issue #6

[unbtorsten]

Vice versa, it is possible to force the design with a QMTech part into assertion failures: #9

[hansfbaier]

@unbtorsten You might want to try again now, things have changed quite dramatically and your results will be entirely different.
You won't need to patch nextpnr-xilinx anymore, the setup script will pull in the iob18-trial branch and use the latest database generated from my prjxray efforts.