[PATCH] doc: bootstd: Describe the optional extension_overlay_addr environment

[Tom Rini]

On Tue, Nov 04, 2025 at 04:15:32PM +0100, Heinrich Schuchardt wrote:
> On 11/4/25 11:45, Kory Maincent wrote:
> > From: "Kory Maincent (TI.com)" <kory.maincent at bootlin.com>
> > 
> > Add extension_overlay_addr description to the list of environment
> > variables that can be useful during the standard boot.
> > 
> > Signed-off-by: Kory Maincent (TI.com) <kory.maincent at bootlin.com>
> > ---
> >   doc/develop/bootstd/overview.rst | 3 +++
> >   1 file changed, 3 insertions(+)
> > 
> > diff --git a/doc/develop/bootstd/overview.rst b/doc/develop/bootstd/overview.rst
> > index 6cf3b48efca..d3dba2a3405 100644
> > --- a/doc/develop/bootstd/overview.rst
> > +++ b/doc/develop/bootstd/overview.rst
> > @@ -261,6 +261,9 @@ fdt_addr_r
> >   fdtoverlay_addr_r (needed if overlays are used)
> >       Address at which to load the overlay for the FDT, e.g. 0x02000000
> > +extension_overlay_addr (needed if extension is used)
> > +    Address at which to load the extension FDT overlays, e.g. 0x02000000
> 
> Requiring a predefined address instead of allocating memory via LMB is not a
> good design.

That's not a general feature right now.

-- 
Tom
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