From: Ahmad Fatoum <a.fatoum@pengutronix.de>
To: Giorgio <giorgio.nicole@arcor.de>
Cc: barebox@lists.infradead.org
Subject: Re: imx7d dual core boot
Date: Mon, 6 Apr 2020 08:16:44 +0200 [thread overview]
Message-ID: <f075fcf2-5703-37ee-b197-84afe0585560@pengutronix.de> (raw)
In-Reply-To: <9bd7f507-8f59-98ee-18af-48be3dba9372@arcor.de>
Hello Giorgio,
On 4/3/20 3:47 PM, Giorgio wrote:
> Hi Ahmad,
>
> thank you for the detailed explanations, I'll have a look
> at the armv7 ref. manual for more background.
>
> I wanted just to note, the problem is specifically linked
> to enabling the MMU:
>
> in arch/arm/cpu/cache-armv7.S:
>
>
> orrne r0, r0, #1 @ MMU enabled
> ...
> mcr p15, 0, r0, c1, c0, 0 @ load control register
>
> without the 'orrne ...' the imx7 does not hang.
I can't reproduce this exact problem. My setup:
- i.MX7D sabresd board,
- imx_v7_defconfig
- check out of upstream/next, commit 5931fe40 ("Merge branch 'for-next/zii' into next")
- revert of commit 8b2104d ("driver: Call of_clk_set_defaults for each probed device")
- nv bootm.secure_state=nonsecure
With this, I didn't observe any barebox hangs[1] while preparing a Linux net boot.
What's your setup?
[1]: Linux still hangs due to what I assume to be a psci issue, kernel log says
"unsupported enable-method property: psci" before getting stuck durcing SDHCI probe
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next prev parent reply other threads:[~2020-04-06 6:16 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-26 10:21 Giorgio
2020-03-27 5:56 ` Ahmad Fatoum
2020-03-27 8:27 ` Giorgio
2020-03-27 10:01 ` Ahmad Fatoum
2020-03-30 14:33 ` Giorgio
2020-04-03 13:01 ` Ahmad Fatoum
2020-04-03 13:47 ` Giorgio
2020-04-06 6:16 ` Ahmad Fatoum [this message]
2020-04-06 6:29 ` Ahmad Fatoum
2020-04-06 15:15 ` Giorgio
2020-04-06 18:44 ` Ahmad Fatoum
2020-04-07 7:46 ` Giorgio
2020-04-07 8:23 ` Ahmad Fatoum
2020-04-07 12:28 ` Giorgio
2020-04-07 13:43 ` Ahmad Fatoum
2020-04-13 22:30 ` Giorgio
2020-04-14 7:59 ` Sascha Hauer
2020-04-14 13:05 ` Giorgio
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