[PATCHv3 2/6] lmb: add LMB_FDT for fdt reserved regions

[Simon Glass]

Hi Randolph,

On Tue, 14 Apr 2026 at 08:36, <rs at ti.com> wrote:
>
> From: Randolph Sapp <rs at ti.com>
>
> Add an LMB_FDT bit for fdt reserved regions, so we can reclaim them when
> parsing a new device tree and properly warn people when a reservation
> overlaps with an existing allocation.
>
> If we don't at least warn the user of these reservation failures,
> there's a chance that this region could be freed and reallocated for
> something important later.
>
> This useful warning mechanism was broken in:
> 5a6aa7d5913 ("boot: fdt: Handle already reserved memory in boot_fdt_reserve_region()")
>
> Signed-off-by: Randolph Sapp <rs at ti.com>
> ---
>  boot/image-fdt.c |  5 ++++-
>  include/lmb.h    | 14 ++++++++++++++
>  lib/lmb.c        | 33 +++++++++++++++++++++++++++++----
>  3 files changed, 47 insertions(+), 5 deletions(-)
>

With bootstd we maintain a list of images attached to each bootflow,
including the address when loaded. Could that provide a solution here?

Regards,
Simon