Use EEPROM to store FRU/SDR information

1

Hi Stefan,

We want to use the EEPROM on our blade (i.e., LATOURNETT) to store the FRU/SDR information. What solution can you suggest ensuring that this information is read during the discovery phase, after the board has been inserted?

Note that this question has already been addressed in this post.

Cheers,

Fatih

2

Hello Fatih,

by default the IPMC stores the SDR/FRU information in the EEPROM on the mezzanine. This was done to be independent of the ATCA blade design. As far as I understand you would like to use an EEPROM on the ATCA blade instead, which may be of interest in case you are planning to swap the IPMC mezzanine cards. Although this is supported by the PigeonPoint software framework, this is currently not supported by the XML scheme (but it may be possible implement it using custom defines in a user header file). We will however first have to test this, in particular the interplay with the HPM upgrade, since all users so far use the mezzanine on the EEPROM for FRU/SDR storage. BTW, is your EEPROM connected to the MGT I2C bus?

cheers,

Stefan

3

Hi Stefan,

Yes, the EEPROM on the blade is connected to the MGT I2C bus.

Cheers,

Fatih

4

Dear Stefan,

Let me please reactivate this discussion, and widen it furthermore to RTM on-board FRU EEPROM support please ?

Best regards,

Sylvain L.

5

Hi there,

To follow my last message, we also need the same possibility for the main board: store FRU and SDR metatdata in a dedicated EEPROM soldered on the main board, and not in the IPMC itself, in order to keep metadata even in case of IPMC swap.

Any doc already about this please ?

Best regards,

Sylvain

6

Hi Stefan,

I would like to contact you again regarding the topic “Use EEPROM to store FRU/SDR information”, originally discussed in 2022 and last followed up in December 2025, but for which we unfortunately have not received any reply so far.

As previously mentioned by Sylvain, we require the ability to store FRU and SDR metadata in a dedicated on‑board EEPROM, both for the RTM and for the Balde. This capability is important for us in order to ensure that all metadata remains available even in the event of an IPMC replacement.

Could you please let us know whether there are any updates, documentation, or plans to support this feature?

Thank you in advance for your assistance.

Cheers,

Fatih