Openlane implementation error

[dineshannayya]

Openlane implementation error

[dineshannayya]

I guess this may be due to openlane docker ..

1. Can you pull my project openlane docker: riscduino/openlane:mpw5

docker pull riscduino/openlane:mpw5

2. set the environmental variable
   export IMAGE_NAME=riscduino/openlane:mpw5
   export OPENLANE_IMAGE_NAME=riscduino/openlane:mpw5
   export OPENLANE_TAG=mpw5

3. Run Make file

make user_project_wrapper

Note: In the latest git version i have moved docker from my name to project name .. i.e now
dineshannayya/dv_setup:mpw5 => riscduino/dv_setup:mpw5
dineshannayya/openlane:mpw5 => riscduino/openlane:mpw5

I will cross-check if there any specific issue in SPI simulation

[dineshannayya]

I have cross-check the spi simulation issue, look like one the .hex is not in git repo .. i have update it to git repo ..

You can update the repo .. this should resolve the simulation issue

[Sya0]

I do not get it. I still get this path error.
couldn't read file "/home/sukruuzun/caravel_user_project/caravel/openlane/user_project_wrapper_empty/fixed_wrapper_cfgs.tcl": no such file or directory.

My caravel example project (32 bit counter) openlane synthesis run flawless but this one gives me error about caravel. fixed_wrapper_cfgs.tcl script is under user_project_wrapper, not user_project_wrapper_empty. I thought, I do not suppose to change those directory paths.

[dineshannayya]

If are using MPW-5 caravel repo .. there is change in fixed_wrapper_cfgs.tcl file location

In MPW-4 : $::env(CARAVEL_ROOT)/openlane/user_project_wrapper_empty/fixed_wrapper_cfgs.tcl
in MPW-5: $::env(CARAVEL_ROOT)/openlane/user_project_wrapper/fixed_wrapper_cfgs.tcl

You need to locally change this file path based on your caravel repo ...

Note: As there is continuous update in caravel repo, My repo still uses MPW4 caravel repo.

[Sya0]

Yes, I use MPW-5 caravel repo. I do not want to make changes in caravel repo. Is there any other way, I made some changes Makefile but it does not work. Should I edit docker image ?

[Sya0]

I changed them locally, now I have this;

FileNotFoundError: [Errno 2] No such file or directory: '/project/openlane/user_project_wrapper/../../lef//qspim.lef'
[ERROR]: during executing: "/openlane/scripts/mergeLef.py -i /project/openlane/user_project_wrapper/runs/user_project_wrapper/tmp/merged_unpadded.lef /project/openlane/user_project_wrapper/../../lef//qspim.lef /project/openlane/user_project_wrapper/../../lef//pinmux.lef /project/openlane/user_project_wrapper/../../lef//wb_interconnect.lef /project/openlane/user_project_wrapper/../../lef//uart_i2cm_usb_spi.lef /project/openlane/user_project_wrapper/../../lef//wb_host.lef /project/openlane/user_project_wrapper/../../lef//yifive.lef /project/openlane/user_project_wrapper/../../lef//DFFRAM.lef -o /project/openlane/user_project_wrapper/runs/user_project_wrapper/tmp/merged_unpadded.lef |& tee >&@stdout"

Sorry to bother you but I am new to this, I stuck a lot.

[dineshannayya]

Default all the lef and gds files are compressed (.gz) in git repo.

You need to unzip the file in lef and gds folder by using below command
gzip -d *

OR If you using latest repo .. use below command in base folder
make unzip

[Sya0]

I think, I fix the version issue, no more path or version error. However, I have an error about pdn:

key "straps" not known in dictionary
[ERROR]: during executing openroad script /openlane/scripts/openroad/pdn.tcl
[ERROR]: Exit code: 1
[ERROR]: Last 10 lines:
child process exited abnormally

[dineshannayya]

Are you using riscduino/openlane:mpw5 OR efabless/openlane docker ?

I have done PDN hack in Openroad setup to get Power Straps only for vccd1/vssd1. Else in standard Openlane flow does power straps for all the power vccd1/vssd1/vccd2/vssd2/vdda1/vssa1/vdda2/vssa2
This should work with riscduino/openlane:mpw5 docker.

If you want to works with efabless/openlane docker .. Then you can mask below line in user_project_wrapper/Makefile
set ::env(PDN_CFG) $proj_dir/pdn_cfg.tcl

[Sya0]

Yes, I use efabless/openlane. Is there any possible disadvantage of doing that hack during tape-out?
Then you can mask below line in user_project_wrapper/Makefile by meaning that should I comment that line ?

[dineshannayya]

My Design uses only one set of power domain (vccd1/vssd1). Default openlane flow does power straps for all power domain vccd1/vssd1/vccd2/vssd2/vdda1/vssa1/vdda2/vssa2, even though design need one set of power hook up for hard-macro.
Due to these i need to keep more free space between each hard-macro to get all 8 vertical and horizontal power strip to get connected .. As my design has less free space between IP. I have hacked PDN script to excluded un-intended power straps generation, which helps me to keep only 2 vertical and horizontal power strip spacing between hard-ip.

Correction: You need to comment pdn_cfg.tcl in user_project_wrapper/config.tcl to get openlane flow to working ..
set ::env(PDN_CFG) $proj_dir/pdn_cfg.tcl

If openlane flow PDN connection breaks then you need to move around the macro location to get PDN to pass.

Note: I have asked Openroad team on alternative option to achieve this .. still no closure on this ..

[Sya0]

I passed lot of checks and synthesis including PDN but now I have this.

[ERROR]: during executing: "magic -noconsole -dnull -rcfile /home/sukruuzun/caravel_pdk/sky130A/libs.tech/magic/sky130A.magicrc /openlane/scripts/magic/gds_pointers.tcl </dev/null |& tee >&@stdout /project/openlane/user_project_wrapper/runs/user_project_wrapper/logs/finishing/20-gds_ptrs.log"                                                       
[ERROR]: Exit code: 1
[ERROR]: Last 10 lines:
child killed: kill signal

[dineshannayya]

@Sya0 I don't know if this issue related to latest openlane tools. you may need to get help from openlane team.

As you see some of the tool update breaks project .. periodically i check for working openlane docker and clone it to riscdino/openlane