How to Use Sram generated from OpenRAM (skywater130) into OpenLane.

Thouheed

10/10/2022, 10:49 AM

How to Use Sram generated from OpenRAM (skywater130) into OpenLane.

Vijayan Krishnan

10/10/2022, 10:53 AM

Check this discussion: https://open-source-silicon.slack.com/archives/C016H8WJMBR/p1665396286661479?thread_ts=1665395643.023009&cid=C016H8WJMBR

👍 1

Thouheed

10/10/2022, 10:57 AM

I generated SRAM from OpenRAM. When I try to use these in OpenLane to do synthesis facing a few issues.

Vijayan Krishnan

10/10/2022, 11:00 AM

how you initialized sram in verilog file?

config.tcl

missing path to sram source RTL file

Thouheed

10/10/2022, 11:01 AM

like this

Vijayan Krishnan

10/10/2022, 11:03 AM

same error explained here: https://armleo-openlane.readthedocs.io/en/merge-window-4/tutorials/openram.html#connect-the-blackbox-information-and-timing-data Read and understand complete document and execute the flow

Thouheed

10/10/2022, 11:08 AM

@Vijayan Krishnan sure i shall go through the document first.

Thouheed

10/10/2022, 11:14 AM

@Vijayan Krishnan thank you for pointing. setting the below environment variable helped in synthesizing the design.

set ::env(EXTRA_LIBS)  "/openlane/pdks/sky130A/libs.ref/sky130_fd_sc_hd/lib/sky130_sram_1kbytes_1r1w_8x1024_8_TT_1p8V_25C.lib"

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