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From: Sam Ravnborg <sam@ravnborg.org>
To: barebox@lists.infradead.org
Subject: Observations with AT91SAM9263-EK
Date: Mon, 3 Jul 2017 18:19:22 +0200	[thread overview]
Message-ID: <20170703161922.GA24614@ravnborg.org> (raw)

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 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

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             reply	other threads:[~2017-07-03 16:19 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-07-03 16:19 Sam Ravnborg [this message]
2017-07-03 16:34 ` Jean-Christophe PLAGNIOL-VILLARD
2017-07-03 21:07   ` Sam Ravnborg
2017-07-03 20:17 ` [PATCH 1/2] clk: fix clk_get error handling Sam Ravnborg
2017-07-04  6:11   ` Uwe Kleine-König
2017-07-04  6:53     ` Sam Ravnborg
2017-07-03 20:22 ` [PATCH 2/2] gpio: fix null pointer exception when there is no oftree Sam Ravnborg

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