On 1/12/2026 8:09 PM, Marek Vasut wrote:
On 1/12/26 11:11 AM, Beleswar Padhi wrote:
When CONFIG_SPL_MULTI_DTB_FIT is enabled, multiple device trees are
packed inside the multidtb.fit FIT image. While the individual DTBs
and the FIT image start address are 8-byte aligned, the DTBs embedded
within the FIT image are not guaranteed to maintain 8-byte alignment.
Because DT properties are 4-byte aligned, and fitImage is a DT with
long binary strings encoded in them. But that is not the case here,
because the invocation does use mkimage -E .
Therefore I see two issues:
- Should the code which handles LEGACY fitImages with 4-byte alignment
be fixed to relocate the blobs ? I think yes.
This we can fix in the Makefile via the dd command as suggested by Tom.
- Should mkimage -E align blobs to 8 bytes by default ? I think yes,
and frankly, I thought it does so already, but apparently not.
This can be done, but should it be? Not all FITs demand an 8-byte
alignment right? It is only the FDT which requires this.
