Hi Rasmus, On Mon, 5 Oct 2020 at 23:41, Rasmus Villemoes <rasmus.villem...@prevas.dk> wrote: > > On 20/09/2020 02.49, Simon Glass wrote: > > The intention which bloblists is that each blob's data is aligned in > > memory. At present it is only the headers that are aligned. > > > > Update the code to correct this and add a little more documentation. > > Hi Simon > > I haven't read this patch in detail, but I have a general request > regarding changes to the bloblist layout: Backwards compatibility - in > the sense that, if the bloblist is generated by SPL from 2020.04, that > should also be usable from a U-Boot proper as of 2021.01 etc. > > While I/we don't actually use bloblist currently, we have some ideas for > what we might use it for on various boards. But, on at least one board, > our SPL is stored in read-only storage after production, while we have > redundant (and updatable) copies of U-Boot proper - so it's important > that a future U-Boot can also grok a bloblist generated by earlier code. > > Is that guaranteed?
It is intended. If we add a test for this we can provide that guarantee, yes. The test will need to encode a pre-built binary bloblist though, not use the code in master to generate it. Regards, Simon
