efi_loader: fix AllocatePages overlap status

Return EFI_NOT_FOUND for EFI_ALLOCATE_ADDRESS overlap

When efi_allocate_pages() is called with EFI_ALLOCATE_ADDRESS, UEFI
expects EFI_NOT_FOUND if the requested address range is already
allocated or unavailable. U-Boot currently returns
EFI_OUT_OF_RESOURCES when efi_update_memory_map() detects an overlap
after a successful lmb_alloc_mem(), which does not match
EFI_ALLOCATE_ADDRESS semantics.

Return EFI_NOT_FOUND for EFI_ALLOCATE_ADDRESS requests that fail due
to an overlapping EFI memory descriptor, while keeping
EFI_OUT_OF_RESOURCES for other allocation types.

The UEFI specification [1] specifies that
EFI_BOOT_SERVICES.AllocatePages must return EFI_NOT_FOUND when the
requested address range is unavailable or already allocated;
EFI_OUT_OF_RESOURCES applies to non‑address‑specific allocation
failures.

[1] https://uefi.org/specs/UEFI/2.10_A/07_Services_Boot_Services.html

Signed-off-by: Harsimran Singh Tungal <[email protected]>

The UEFI specification does not clearly specify the behavior.
But let's follow the EDK II precedent here.

Reviewed-by: Heinrich Schuchardt <[email protected]>

0 files changed, 0 insertions, 0 deletions