Re: [BISECTED] arm: mvebu: Kernel hang after ae9304c9d311 if OF_SELFTEST=y

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Hi Arnaud,

On 23/10/2014 13:00, Arnaud Ebalard wrote:
> Hi,
> 
> Trying to boot a 3.17.1 (same thing w/ current tip of Linus tree or
> 3.17.1) on two Marvell Armada 370 based platforms (NETGEAR ReadyNAS
> 102 and Synology DS213j) ends up w/ the following:
> 
>    Starting kernel ...
>    
>    Uncompressing Linux... done, booting the kernel.
>    
>    Error: unrecognized/unsupported machine ID (r1 = 0x00000bde).
>    
>    Available machine support:
>    
>    ID (hex)        NAME
>    ffffffff        Generic DT based system
>    ffffffff        Marvell Armada 380/385 (Device Tree)
>    ffffffff        Marvell Armada 375 (Device Tree)
>    ffffffff        Marvell Armada 370/XP (Device Tree)
>    
>    Please check your kernel config and/or bootloader.
> 
> I bisected it up to ae9304c9d31117 ("Adding selftest testdata
> dynamically into live tree"). For a while, my kernels are compiled w/
> OF_SELFTEST and it works w/o issue. After that commit, boot hangs as

It would be interesting to have a feedback of a kernel with an appended dtb
and OF_SELFTEST enabled to a different platform (ie non mvebu). Then we
will know if it something related to mvebu or to the device tree support.

I will try to see if I can do this.

> presented above. Disabling the option solves the issue on 3.17 and
> also for current tip of Linus tree. Reverting the commit on those
> kernel is not straightforward.
> 
> A config is attached.
> 
> Cheers,
> 
> a+
> 
> ps: my platforms all boot a kernel w/ an appended dtb.
> 


Thanks for you report,

Gregory


-- 
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
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