[PATCH] xilinx: Enable efi debug command

[Ilias Apalodimas]

Hi Tom, Michal,

On Tue, Mar 30, 2021 at 02:16:22PM +0200, Michal Simek wrote:
> Hi,
> 
> On 3/30/21 2:06 PM, Tom Rini wrote:
> > On Mon, Mar 29, 2021 at 08:27:00AM +0200, Michal Simek wrote:
> > 
> >> Enable EFI debug command to be able to setup various efi variables to avoid
> >> software like grub.
> >>
> >> Signed-off-by: Michal Simek <michal.simek at xilinx.com>
> > 
> > Can you elaborate on what you're setting here?  This seems like a
> > potentially neat trick that should be documented.
> 
> It just enabling efidebug command to be able to setup efi variables.
> We have discussed it recently with Ilias in connection to efi boot
> without grub.
> I think Ilias is the best person to talk about details based on patches
> he is sending.
> 

It is documented, just not pushed yet u-boot/next, due to the file renaming
on the documentation.
You can find details here
https://lists.denx.de/pipermail/u-boot/2021-March/444855.html
but the tl;dr version is that , with newer kernels we can add the initrd path
of the specific image in an EFI Boot### variable.

That allows you to boot EFI based vertical distros, that contain multiple
initrd-kernel pairs, by just using the EFI interfaces and not have to rely on
GRUB or whatever people were doing up to now.


Cheers
/Ilias

> Thanks,
> Michal
> 
> 
> 
> 
>