Observations with AT91SAM9263-EK

[Jean-Christophe PLAGNIOL-VILLARD]

> On 4 Jul 2017, at 12:19 AM, Sam Ravnborg <sam at ravnborg.org> wrote:
> 
> Hi all.
> 
> I recently purchased an AT91SAM9263-EK from ebay and
> have played around a little with barebox.
> For now only some observations.
> 
> I had the impression that I could
> drop AT91BootStrap when using barebox.

Yes Wrote the support for that but on the 9263 you are limited.

you have 2 choice boot a small barebox <= 72kiB

or use a console less barebox to boot the second barebox

as the rom code on at91 will load the barebox from the SD or Nand
into SRAM
> 
> But I could not make it boot until I deployed 
> at91bootstrap (named BOOT.BIN) on the SD-card.
> And I named arch/arm/pbl/zbarebox.bin => u-boot.bin
> on the SD-card.
> 

on 9263ek you have a nor flash so why not flash it

in this case barebox will boot by itself

without the bootstrap

Best Regards,
J. 
> I wanted to boot barebox - but nothing happened.
> So I tried older versions af barebox:
> 
> v2017.06.0 => Boots OK (did not try to load a kernel)
> 
> v2017.07.0 => Boots but emits:
> NULL pointer dereference at address 0x00000014
> ### Please RESET the board ###
> (A bit more was written to the serial console)
> 

> master from git => Nothing written to the console at all
> 
> I will as time permits dig deeper into this.
> Seems like we are facing two bugs:
> One that causes the NULL pointer, and another that
> prevents any output.
> 
> As barebox is quick to build and the bug is simple to spot
> I will likely just try to bisect and see where I end up.
> 
> 	Sam
> 
> _______________________________________________
> barebox mailing list
> barebox at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/barebox