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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