CTF: UEFI HTTP boot support

[Rebecca Cran]

On 6/17/20 2:11 PM, Rodney W. Grimes wrote:

> Does freeBSD have any way to access these "Virtual Disk"
> or Virtual CD images once we leave the world of the loader?
> I believe we do not, as these are BIOS/UEFI devices that
> require calls into the UEFI code, which, IIRC is gone
> once we exit the loader and start the kernel proper,
> or shortly there after.
>
> As far as I know these devices well not be found by the FreeBSD
> cam layer ATA or AHCI drivers as they do not present an actual
> PCI device to find.

I just tried it on my Supermicro server and you're right, it doesn't 
show up under FreeBSD. I'm not sure if there's a way to access them via 
UEFI Runtime Services or if it's designed purely as a boot-time thing.


-- 
Rebecca Cran