Re: Observations with AT91SAM9263-EK
On Tue, Jul 04, 2017 at 12:34:58AM +0800, Jean-Christophe PLAGNIOL-VILLARD wrote: > > > On 4 Jul 2017, at 12:19 AM, Sam Ravnborg 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 Thanks for the info. I will try to collect this in a at91.rst file in Documentation/boards/ When there is something useful I will post a patch for review. > > > > 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 The EK only have NAND, the NOR is not mounted. But anyway - the idea here is to have a testbed for my at91 patches that I can use before I send them upstream. I have a proprietary at91sam9263 based board that I will try to add support for in barebox. But only the parts touching the atmel boards are relevant for the upstream barebox. Step 1 was to get barebox workign with the EK, and with the two small patches I already sent it looks like I had some luck there. Sam ___ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox
Re: Observations with AT91SAM9263-EK
> On 4 Jul 2017, at 12:19 AM, Sam Ravnborg 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 0x0014 > ### 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@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/barebox ___ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox
Observations with AT91SAM9263-EK
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. 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. 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 0x0014 ### 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@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox
