Of the 8 e310s that I have tested with the same image, only one of them has
the actual MAC address of 00:80:2f:19:4c:37, which I was able to find out
via:
hexdump /sys/bus/nvmem/devices/0-00510/nvmem
Weird. Glad I found the one device that had that MAC though. So that must
have been patient 0. Then I copied that image to the others. But the
question is why did they adopt the same MAC address instead of reading from
the PROM at every boot up? I'll have to dig deeper into U-Boot to see.
On Wed, Nov 25, 2020 at 2:09 PM Marcus D Leech <patchvonbr...@gmail.com>
wrote:
> Near as I can tell the e310 gets its MAC from the motherboard i2c eeprom.
>
> Sent from my iPhone
>
> On Nov 25, 2020, at 12:55 PM, Andrew Payne via USRP-users <
> usrp-users@lists.ettus.com> wrote:
>
>
> So does the U-Boot environment determine the MAC address of eth0 prior to
> booting the kernel? Or is it during the make of the boot image? I just
> find it a stretch to believe that I am running an image on a number of
> SDRs, and they're all using the same MAC address, possibly from the e310
> for which the boot image was generated?
>
>
>
> On Wed, Nov 25, 2020 at 8:59 AM Philip Balister <phi...@balister.org>
> wrote:
>
>> Mine is different, but both seem to be from the National Instruments
>> block (which is good):
>>
>> root@ni-e31x-30D280A:~# ifconfig
>> eth0 Link encap:Ethernet HWaddr 00:80:2F:25:02:37
>> inet addr:192.168.11.152 Bcast:192.168.11.255
>>
>> I see a warning early in boot about using a MAC address from ROM. I'm
>> not sure where that came from.
>>
>> Philip
>>
>> On 11/25/20 8:36 AM, Andrew Payne via USRP-users wrote:
>> > ---------- Forwarded message ---------
>> > From: Andrew Payne <wandr...@gmail.com>
>> > Date: Wed, Nov 25, 2020 at 8:35 AM
>> > Subject: Re: [USRP-users] E310: Change MAC Address?
>> > To: Philip Balister <phi...@balister.org>
>> >
>> >
>> > It is: 00:80:2f:19:4c:37
>> >
>> > When is that .patch file ran, is it during compilation of the BSP? When
>> > would I see that error message printf("I2C EEPROM MAC address read
>> > failed\n");?
>> >
>> > How could I experiment with compiling a new BSP with the UHD 3.15
>> > environment loaded, so then I may insert my own MAC Address or get the
>> i2c
>> > EEPROM read to work? Do I need
>> > https://github.com/EttusResearch/meta-ettus
>> > and
>> > https://github.com/Xilinx/u-boot-xlnx
>> > and may be use this guide:
>> > https://opencpi.github.io/bsp_e310/Ettus_E3xx_Getting_Started_Guide.pdf
>> > ?
>> >
>> > Thanks,
>> > Andrew
>> >
>> >
>> > On Wed, Nov 25, 2020 at 8:26 AM Philip Balister <phi...@balister.org>
>> wrote:
>> >
>> >> What is that mac address? I'd like to see if it matches mine.
>> >>
>> >> If I recall correctly, the mac address is flashed into the i2c eeprom,
>> >> u-boot is supposed to read that and use it. Factory test should set it
>> >> up uniquely. But my memories fade. Inspecting the u-boot source might
>> >> show us ....
>> >>
>> >>
>> >>
>> https://github.com/EttusResearch/meta-ettus/blob/zeus/meta-e31x/recipes-bsp/u-boot/files/0001-ni-zynq-Add-support-for-NI-E31x-SG1-SG3-boards.patch#L397
>> >>
>> >> I didn't sift through the ifdef's though.
>> >>
>> >> Philip
>> >>
>> >> On 11/24/20 7:28 PM, Andrew Payne via USRP-users wrote:
>> >>> Is there a way to change the mac address of my e310s? I have imaged
>> >>> several e310s using the image file in
>> >>> https://files.ettus.com/binaries/cache/e3xx/meta-ettus-v3.15.0.0/,
>> and
>> >> they
>> >>> all have the same MAC address.
>> >>>
>> >>> On some searching around the web I can see that it is likely that the
>> MAC
>> >>> address parameter is specified as a U-boot parameter. I'd like to
>> know
>> >>> what my options are for changing it.
>> >>>
>> >>> Thanks,
>> >>> Andrew
>> >>>
>> >>>
>> >>> _______________________________________________
>> >>> USRP-users mailing list
>> >>> USRP-users@lists.ettus.com
>> >>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>> >>>
>> >>
>> >
>> >
>> > _______________________________________________
>> > USRP-users mailing list
>> > USRP-users@lists.ettus.com
>> > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>> >
>>
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