Re: [RFC] Defining firmware (OVMF, et al) metadata format & file

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On Thu, Mar 08, 2018 at 08:45:07AM +0100, Gerd Hoffmann wrote:
> > Suggested approach
> > ------------------
> > 
> > Based on an upstream discussion on 'virt-tools'[1] mailing list and some
> > Bugzillas, Gerd Hoffmann, Laszlo Ersek and Dan Berrangé had a suggestion
> > to define a firmware metadata format and file (example in [1]):
> > 
> >   - For each firmware file we need a metadata file in a well defined
> >     location, e.g. /usr/share/qemu/bios/ that lists stuff like:
> > 
> >       - Path to the firmware binary
> >       - Path to the pre-built OVMF 'vars' file (if any)
> 
> How to load the binary (using -bios, -pflash, possibly also -kernel, for
> uboot @ arm).

I wonder if there's value in also using this for describing secondary
device specific ROMs like iPXE and friends.

> 
> >       - Support architectures - associated QEMU feature flags (Secure
> >         Boot)
> 
> Also machine types.  ovmf builds with smm don't boot on pc.  coreboot
> has hardware-specific roms too, so the pc build wouldn't boot on q35 and
> visa versa.  Same on arm, where the firmware typically is board-specific.
> 
> >       - If the binary provides / requires SMM (System Management Mode)
> 
> Possibly a more generic "flags" or "properties" thing, I can easily
> imagine that simliar requirements show up on other platforms too.
> 
> Also a "name" and a "description" field would be useful.
> 
> cheers,
>   Gerd
> 

Regards,
Daniel
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