On Mon, Aug 3, 2026 at 9:37 PM Gregory Nutt <[email protected]> wrote:
> I'm experimenting to see how much of an effort it will take to get nuttx > running on a nucleo-h7s3l8 board which uses a small internal flash and > external octo-flash. Boot process requires a bootloader in internal flash > to configure power/clocking/octo-flash and then execute the full > nuttx/application from octo-flash that completes the rest of the > initialization. > > There are several boards in the source tree that boot in a similar > two-step way. For example, all run-from-SDRAM configurations require some > startup logic that initializes the SDRAM before you can run from it. The > (SAM5D has several such tiny loaders. I recall it loads from SPI FLASH > into IRAM where the SDRAM is initialized). > > > There was some work some time ago to make it possible to use a minimal build of NuttX itself as a bootloader, which could then load a more full featured build of NuttX as the operating system. Just thought I should mention that, as potential "idea material." Nathan
