[MinnowBoard] How can I set MAC address in EFI shell!?

John Hawley john.hawley at intel.com
Fri Jul 10 18:17:38 UTC 2015

If you've got a board with a MAC address of all 0s you'll need to RMA it
to have the MAC address set, or if you happen to be at a conference
where I'll be, let me know, and bring your bored and I can fix it for you.

- John 'Warthog9' Hawley

On 7/10/2015 10:59 AM, Dave Smith wrote:
> This was true on one of my boards as well.
> I was told it was because it was one of the first production boards
> built. Still waiting on a resolution/utility to fix it.
> -- 
> Dave Smith, PE
> @devunwired
> On Friday, July 10, 2015 at 11:57 AM, Gerard Bucas wrote:
>> Yes - all zeros!
>> Anything I can do to fix this!?
>>> On Jul 10, 2015, at 7:56 PM, John 'Warthog9' Hawley
>>> <warthog9 at eaglescrag.net <mailto:warthog9 at eaglescrag.net>> wrote:
>>>> On 07/10/2015 10:27 AM, Gerard Bucas wrote:
>>>> Somehow my MAC address on one of my minnowBoard MAX's got screwed up.
>>>> Does anyone know how to write a new address into nvram (or wherever
>>>> it is
>>>> stored) using the EFI shell?
>>>> I am using latest 0.81 firmware.
>>>> While on this topic, how is the MAC address initially created during
>>>> manufacturing (is there some utility the factory runs to set the MAC
>>>> address
>>>> for each new minnow board produced)? Also where exactly is it stored?
>>>> My firmware got corrupted (so I "bricked" this board) and had to use my
>>>> DediProg SF100 to write a new (0.81) firmware to the flash chip.
>>>> After that
>>>> it boots fine and everything seems back to normal but somehow my MAC
>>>> address
>>>> got screwed up in the process.
>>>> I own a number of minnowMAX boards and have noticed that the MAC
>>>> address is
>>>> normally "retained" even when one completely erases and re-writes
>>>> the flash
>>>> memory chip (using a DediProg SF100), so this says to me that the MAC
>>>> address is not stored in the same flash memory chip that contains the
>>>> firmware/BIOS.
>>>> Would like to learn more about this...
>>> The MAC address for the NIC isn't stored in the nvram firmware, and the
>>> process of writing it into the NIC itself is permanent. What exactly
>>> are you seeing with your MAC address? Is it all 0's?
>>> - John 'Warthog9' Hawley
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