[LinuxBIOS] ck804 romstrap modification

Roman Kononov kononov195-lbl at yahoo.com
Wed Feb 7 19:46:57 CET 2007

On 02/07/2007 12:13 PM, Lu, Yinghai wrote:
> So you need to scripts for flash
> 1. get mac address from the legacy bios from flash
> 2. flash your linuxbios.
> 3. reprogram you mac address again.

Thank you for the clarifications.

> Good HW design should use serial EEPROM on smbus to preserve the MAC
> address instead like s2895.

It is not my case. Sun Ultra40 has AT24C64, which has no MAC in
it. This EEPROM looks smbus-unfriendly for it needs 13-bit data
words. In any case, the original BIOSes contain MACs, serial
numbers and other tags.

> -----Original Message-----
> From: Roman Kononov [mailto:kononov195-lbl at yahoo.com] 

> Another point is that I've spent quite a bit of time figuring
> out exactly why my networking is screwed and how it would be
> possible to move the MAC address definition from the secret
> file closer to the particular target configuration and the
> person compiling it. The MAC address is not a property of
> ck804, it is a property of the mainboard or the target.

What do you think about the above stuff?

I panned to modify romstrap.inc and Sun Ultra40 mainboard's
Config.lb, and put that mac_address.h into the target directory
so that a potential user of linuxbios.org would be aware about
all this.


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