Re: [RFC PATCH net-next 9/9] ethtool: Add ability to flash transceiver modules' firmware

From: Andrew Lunn
Date: Wed Jan 31 2024 - 11:33:17 EST


> > > How big are these firmware blobs?
> > >
>
> The largest file I came across is 400K.

https://hack-gpon.org/ont-fs-com-gpon-onu-stick-with-mac/

Suggests that some GPON devices have 16MB of flash. Ideally we don't
want to map a 16MB firmware image into the kernel address space. A
high end switch could do it, but a typical OpenWRT 'cable modem' is
likely to have trouble.

Andrew