On Fri, 14 Jun 2019 23:36:53 +0200 Andreas Färber <[email protected]> wrote:
> Am 14.06.19 um 21:46 schrieb Michal Suchánek: > > I suspect our u-boot would need to be reconfigured to > > load grub from network. > > Upstream U-Boot is already configured to fall back to network if there's > no bootable files on SD or USB. Yes, we can construct situations where > that would break, but let's start easy... Yes, it is possible to enforce PXE network boot even when an SD card is inserted. The firmware continues booting from the network in that case. FWIW the boot ROM indicates the chosen boot method by storing some status values in the mailbox registers (totally undocumented, of course), but I'm not sure whether the firmware makes use of them, or if they re-implement the boot ROM logic. So, yes, let's start easy. Petr T > For the 3B+ it may be necessary to use an updated u-boot-rpi3 binary > from the :Update channel rather than from original Leap 15.0 release. > Symptoms would be unreliable TFTP transmissions. > > Regards, > Andreas >
pgppg6QAHpxdO.pgp
Description: Digitální podpis OpenPGP
