Re: Reset on Beaglebone Black has become unreliable/broken

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

Hello Konstantin,

On 28.11.24 13:02, Konstantin Kletschke wrote:
> On Thu, Nov 28, 2024 at 12:18:45PM +0100, Ahmad Fatoum wrote:
>>
>> Are you still building with the same toolchain?
> Checked out current barebox git: barebox 2024.10.0-00150-g7a3cb7e6fd63 #2 Thu Nov 28 12:37:15 CET 2024
> Changed CONFIG_BAREBOX_MAX_IMAGE_SIZE from 0x1b400 to 0x2b400

Why do you do this step? 0x1b400 == 109KiB, which is chosen, because the MLO
needs to fit into the On-Chip SRAM of the AM335x.

Increasing the size won't magically increase RAM size, but it may result
in a truncated MLO being loaded into memory or worse: barebox overwriting
memory and MMIO that it shouldn't be touching.

Do you also change this when compiling your normal image?

Cheers,
Ahmad

> Did am335x_mlo_defconfig and omap_defconfig and copied those images.
> I used another crosscompiler toolchain for this: gcc-linaro-7.5.0-2019.12-x86_64_arm-linux-gnueabihf
> 
> Same error behaviour: Power up -> S1 or "reset" produce freeze.
> 
> Will test CONFIG_DEBUG_LL and/or move those lines around.
> 
> Regards
> Konsti
> 
> 


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