[U-Boot] [PATCH v7 00/15] SiFive FU540 Support

[Bin Meng]

On Tue, Feb 12, 2019 at 6:23 PM Andreas Schwab <schwab at suse.de> wrote:
>
> On Feb 12 2019, Bin Meng <bmeng.cn at gmail.com> wrote:
>
> > The env var is stored in whatever supported media in U-Boot. Not like
> > PCI NICs which normally have EEPROM to store pre-flashed MAC address
> > by their vendors, for most embedded network controllers in the SoC,
> > normally there is no hardware provided mechanism to ensure a unique
> > MAC address, instead it relies on software to program one to the
> > hardware before bringing it up.
>
> On the Hifive the MAC is part of the initial DT, so there is no need to
> use a secondary store.
>

So for the HiFive board, who is supposed to guarantee the uniqueness
of the MAC address? Does SiFive program DT with different MAC to every
board they shipped? If so, we can just read  "local-mac-address" from
DT in U-Boot.

Regards,
Bin