hi, does anyone know is it possible to use tftp from the pegasos1 smartfirmware, and, if yes, how can i do to load a kernel image from the tftp?

thank you

As far as I recall, network booting was never implemented on the Pegasos I.

Might I ask what you're going to use it for?

I would like to make parthenope works on pegasos1 too

I wouldn't waste your time on it, to be honest. The very few Pegasos 1 owners out there plus the myriad bugs in OF on that board (if you even have an April version, otherwise the chipset bugs make it a doorstop) make it pretty pointless.