[U-Boot-Users] EEPROM content and multiple NIC

Mark Rakes mrakes at mac.com
Wed Apr 20 08:07:22 CEST 2005


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On Apr 19, 2005, at 10:24 PM, Daniel Ann wrote:
> I'm very curious about this output I'm getting,
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>         00  14  100b  0020  0200  ff
...
> Net:   natsemi: EEPROM contents:
>  d008 0001 0001 0001 0001 0001 0001 0001 0001 0001 1841 0001
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>
> As far as I know, NS83815 manual claims that d008 is a default value
> for vendor ID. but pci_ids thinks 100b is National semiconductor's
> vendor ID. Does anyone know why the difference ?
d008 == 1101000000001000
100b == 0001000000001011

It's been a long, long time since I touched/looked at this code (or the
docs!), so don't ask me why this is like it is, but, there you have 
it...

I do remember that getting MAC addresses into the EEPROM wasn't much
fun because of the shifting required to get the bits into the right
places.

hope this helps,
- -mark rakes


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