On 13.02.19 02:31, Bin Meng wrote: > On Tue, Feb 12, 2019 at 6:23 PM Andreas Schwab <sch...@suse.de> wrote: >> >> On Feb 12 2019, Bin Meng <bmeng...@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.
The DT is supplied via SD card, just like U-Boot is. So it's up to the user to modify the DT and ensure that it contains a unique MAC address. Alex _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
