Re: Transfering Data from GRUB to userspace?

[Daniel Kiper]

On Thu, Nov 14, 2019 at 12:56:25PM +0200, Toomas Soome via Grub-devel wrote:
> > On 14. Nov 2019, at 12:27, Max Tottenham via Grub-devel <address@hidden> 
> > wrote:
> > On 10/28, Daniel Kiper wrote:
> >> Hi Max,
> >
> > ...
> >
> >> Yeah, I think you are right. Additionally, please take a look at [1] and
> >> especially at [2]. The series is about to commit and setup_indirect part
> >> can be very useful for you. And I would like to see similar feature in the
> >> Multiboot2 protocol [3].
> >
> > So it looks to me like setup_data is linux specific, which is fine for
> > me, but would mean that the BSDs wouldn't be able to take advantage of
> > some more generic bootloader <-> userspace interface (like a file in a
> > ramdisk).
>
> multiboot2 already does have modules mechanism, which is pretty
> generic because the identification can be done via module command
> line.
>
> For example, for illumos we are providing boot loader environment
> variables as module (commandline) type=environment, console font as
> type=console-font and so on.

This is another option but I prefer to have separate Multiboot2 type for
"log" thing. This way we will not confuse existing users of module
Multiboot2 type.

Daniel