I'd like to share again a patch that got posted a long while ago here and
never seen to get attention on it:
https://lists.gnu.org/archive/html/grub-devel/2015-09/msg00065.html
I found this patch useful as it allows my servers to reboot automatically
if grub is unable to boots within a defined time. Yes, some of my servers
don't have the hardware bios watchdog.
I can share here the patch is working fine on the infra I'm working on,
using it for 8 months in production. 50K servers are using it with success.
I get the patch downstream but think it would have its place upstream too.
If anyone wants to get a look at it, I'd be happy to help.