Carlo Caione [2026-08-21 09:05:37] wrote: > It is possible to include U-Boot proper in the host-loaded bootstrap > and use its existing fastboot implementation. That is a valid approach > and is preferable where the Boot ROM download limit and memory budget > allow it.
Right, that's the situation I'm familiar with. > But it is not always possible: some platforms (like the one we are > enabling) impose a strict size limit on the bootstrap, or only provide > enough early memory for the DDR initialization code and (small) > SPL-sized payload. I associate "fastboot" with the Android nebula, so I find it hard to imagine a machine with enough resources to run Android yet with a small enough boot memory for U-Boot not to fit into it. I assume the SPL is pre-installed in some dedicated boot memory (SPI NOR?) whereas the main storage is left uninitialized during production. And the NOR flash is so small that it can't even accommodate a proper U-Boot? I wonder how many cents it saves the manufacturer (e.g. compared to having a slightly bigger NOR, or not having the NOR at all and pre-installing U-Boot on the main storage) 🙁 Anyway, this is clearly getting offtopic. Thanks for the answer. === Stefan
