Hi Sourabh, > Thanks for the update. Looking at the board/raspberrypi/rpi/rpi.c I think MAC > address is only returned for models that have onboard ethernet. but for > models raspberry pi 0w / pi 02w it might not return any value. > Am I correct? (maybe I overlooked it?) Is there any other approach for this?
TBH I have no idea, in a lot of cases the MACs are written to SoCs long before they end up in a final product so they may well be there. I have not tried, I was merely pointing out to you possible solutions for you to try. I don't have the original pi0 but I also gave you other possible ways to solve you're problem :) > Thanks in advance > > On Wed, Aug 28, 2024 at 5:31 PM Peter Robinson <pbrobin...@gmail.com> wrote: >> >> Hi, >> >> I appear to have missed the first post. >> >> > Is there any update on the below request? Are there any functions similar >> > to eth_get_ethaddr() to retrieve device-specific info? I am working with >> > raspberry pi 0 and there is no network interface card. >> > So, eth_get_ethaddr() returns null >> >> So there's a bunch of drivers for OTP/eFuses in drivers/misc/* which >> provide access to those sort of unique options such as CPU serial >> numbers, and possibly stored MACs etc. >> >> I know the RPi has a OTP/eFUSE HW IP block, I don't believe U-Boot has >> a driver for that as yet. >> The main RPi firmware may have an mbox/API for querying those sorts of >> things, looking at board/raspberrypi/rpi/rpi.c there's a >> set_usbethaddr which calls a msg_get_mac_address to request a MAC from >> the RPi firmware, I suspect that may work for your needs. >> >> Peter >> >> > Thanks in advance >> > >> > On Wed, Jun 19, 2024 at 9:11 AM Sourabh Hegde Ramu >> > <hrsourabh1...@gmail.com> >> > wrote: >> > >> > > Hello, >> > > >> > > Currently, I am using the MAC address from eth_get_ethaddr() function to >> > > calculate a hash value. But, I would like to replace this with a more >> > > unique device info such as cpuid or other values. But I could not find >> > > any >> > > function that can retrieve cpu info. >> > > >> > > Can anyone please point me in the correct direction? Do we have any >> > > functions for this? Are these things part of the documentation? >> > > >> > > Thanks in advance. >> > > >> > > Kind regards, >> > > Sourabh >> > >
