Re: [REGRESSION] Verdin AM62/62P not booting with 42b3ee7fa524

[Francesco Dolcini <francesco@dolcini.it>]

Hello Tom,

On Tue, Feb 24, 2026 at 03:38:06PM +0100, Francesco Dolcini wrote:
> On Tue, Feb 24, 2026 at 11:21:23AM +0100, Francesco Dolcini wrote:
> > On Mon, Feb 23, 2026 at 04:58:21PM +0100, Francesco Dolcini wrote:
> > > On Fri, Feb 20, 2026 at 07:23:42AM -0600, Bryan Brattlof wrote:
> > > > On February 20, 2026 thus sayeth Francesco Dolcini:
> > > 
> > > I was not able to verify this yet, but it seems that since commit
> > > ba20b2443c29 ("arm: mach-k3: common: Reserve video memory from end of
> > > the RAM") the ram top is overwritten and our
> > > verdin-am62.c:board_get_usable_ram_top() is ignored :-(
> > > 
> > > So, the change from devarsh broke it, but before the addition of the
> > > memory firewall the memory corruption was not leading to a crash ...
> > 
> > I can confirm that the issue is around the board_init_f() that is
> > overridden on the k3 architecture and spl_enable_cache(). It messes up
> > with gd->*ram* variables ignoring various config options, including
> > verdin-am62.c:board_get_usable_ram_top(). Any comment on this?
> > 
> > Trying to get out of this regression, one solution would be to move the
> > whole memory map as it was done on the pocket beagle2, as it was
> > suggested a few email ago.
> > 
> > Or fix the spl_enable_cache() implementation.
> > 
> > Bryan, and TI folks, what's your suggestion on the next steps here?
> > 
> > In addition to that, no matter if I do a quick and dirty hack on
> > spl_enable_cache(), or if I move the optee at the beginning of the ram,
> > I get this error once every few resets
> > 
> > ```
> > ...
> > Authentication passed
> > Authentication passed
> > Loading Environment from nowhere... OK
> > init_env from device 9 not supported!
> > Warning: Did not detect image signing certificate. Skipping authentication to prevent boot failure.
> > This will fail on Security Enforcing(HS-SE) devices
> > ```
> > 
> > and after that a freeze. I am starting to think that this is another,
> > unrelated issue.
> 
> Yes, I can confirm that this is another, but related issue :-/

...

> On the other topic I am waiting for TI advise if they plan to fix
> spl_enable_cache() or I would need to work on revising the memory map
> for the various firmwares + U-Boot.

current master +

https://lore.kernel.org/all/20260224134557.2067046-1-devarsht@ti.com/
https://lore.kernel.org/all/20250314100734.23777-1-eichest@gmail.com/

fixes the boot failure on Verdin AM62 512MB variants.

Tom: does this looks ok to you? It should solve this regression,
finally.

Francesco