[U-Boot] [PATCH 00/12] Enable returning back to BootROM from spear SPL

[Stefan Roese]

On 07.05.19 14:18, Miquel Raynal wrote:
> Spear machines currently have only the possibility to boot from NOR
> while an interesting alternative exist: booting from USB. For this,
> the BootROM will enumerate an USB device and wait for a RAM driver
> (likely, the SPL). It will load the driver in SRAM and jump to
> it. Once the initialization done, the SPL must return back into the
> BootROM so that another enumeration occurs allowing the user to upload
> the full Bootloader (eg. U-Boot). The BootROM will finally load the
> file in RAM and jump into it.
> 
> Most of the patches are cleanups and preparation work to ease the
> reading of the main assembly file.
> 
> The last patch is a fallback on USB Boot if the NOR is empty or
> corrupted. Of course if USB boot has not been enabled, nothing will
> happen.
> 
> Tested on a custom board featuring a SPEAr600.
> 
> Hope this change will find users!

Many thanks for working on this and improving the neglected SPEAr
U-Boot port. It's quite some time since I worked on this platform
and I still do have a x600 board hidden somewhere. Frankly, if
there is no real need I will not dig this board up to update and
test a new U-Boot version on it (sorry).

Thanks,
Stefan