Examples for Serial Payload Interface (PI) in CERN IPMC

Software
1

Hi Julian,

As you know, we want to use the UART PI interface to exchange data from SOC and CERN IPMC.

Besides the documents under NDA ( Cern Authentication ) Is there any example about how to using this interface? I don’t know how to use it accurately.

I saw in the new version of CERN IPMC firmware, you have added such support. Have you test it with a example design?

Or do you know any group which has achieve such function in CERN IPMC? We can ask them directly.

Thank you very much!

Best Regards,
Weigang

2

Hi Weigang,

I thought I had already replied, but I couldn’t find a trace in Discourse. So, here again some information.

The Payload Interface of the IPMC can be used quite easily in “TM = Text Mode”, which uses IPMI commands in human-readable raw code between square brackets, e.g. “[B0 00 01 00]” for PICMG Get Address Info command.

You can find software in the ATLAS gitlab project IpmcSetrialInterface, at Cern Authentication. This if for use with Linux and cross-compilation. If you want to run the Payload Interface already during U-Boot, you can find some software in soc / u-boot-sipl · GitLab.

Hope this helps. Cheers,
Ralf.