Re: Boot fails with Unexpected/invalid #address-cells/#size-cells in device tree

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On 15/08/12 16:32, Jessica Allison wrote:
> 
> 
>> Date: Wed, 15 Aug 2012 16:20:12 +0100
>> From: marc.zyngier@xxxxxxx
>> To: jessica.allison.2012@xxxxxxxxxxx
>> CC: peter.maydell@xxxxxxxxxx; kvmarm@xxxxxxxxxxxxxxxxxxxxx
>> Subject: Re:  Boot fails with Unexpected/invalid #address-cells/#size-cells in device tree
>>
>> On 15/08/12 16:13, Jessica Allison wrote:
>>>
>>>
>>>> Date: Wed, 15 Aug 2012 16:06:49 +0100
>>>> From: marc.zyngier@xxxxxxx
>>>> To: peter.maydell@xxxxxxxxxx
>>>> CC: jessica.allison.2012@xxxxxxxxxxx; kvmarm@xxxxxxxxxxxxxxxxxxxxx
>>>> Subject: Re:  Boot fails with Unexpected/invalid #address-cells/#size-cells in device tree
>>>>
>>>> On 15/08/12 15:50, Peter Maydell wrote:
>>>>> On 15 August 2012 15:45, Jessica Allison
>>>>> <jessica.allison.2012@xxxxxxxxxxx> wrote:
>>>>>> Yes, when I quickly remove that check in the code, it boots up just fine.
>>>>>
>>>>> Good (although we should probably do a proper fix and make sure
>>>>> we handle 64 bit sizes correctly in the following code).
>>>>>
>>>>>> Is there already a way to boot up a full graphical user environment on the
>>>>>> FastModel simulator with the KVM on ARM kernel?
>>>>>> I use
>>>>>> http://git.kernel.org/?p=linux/kernel/git/maz/arm-platforms.git;a=summary
>>>>>> for my kernel and the system boots fine into a root shell.
>>>>>> Is there a kernel driver for the LCD by now, and included in the device
>>>>>> tree?
>>>>>
>>>>> Graphics via the pl11x should work fine, but I don't think anybody has
>>>>> actually tested because the effect of stacking KVM on top of the Fast
>>>>> Model means it would run pretty slowly. Try getting it running with
>>>>> plain QEMU on x86 first, then the same kernel config should behave
>>>>> the same on KVM.
>>>>
>>>> Only the A9 tile code has some support for its private pl111. The new DT
>>>> code has no knowledge of the VE baseboard pl111. Not to mention the
>>>> HDLCD on TC1/TC2, which doesn't even have a driver.
>>>>
>>>> As mentioned in an email to Jessica a while ago, this bit is waiting for
>>>> a kind soul who'd actually cares about video output to pick it up...
>>>
>>> When my kernel boots with the rtsm_ve-cortex_a15x2.dts device tree I see the following error which, I assume, is related to the pl111 not working?
>>>
>>> clcd-pl11x: probe of 1c1f0000.clcd failed with error -22
>>
>> That's one of the many problems. I have a really ugly workaround in one
>> of my branches that allows the frame buffer to be used, but that patch
>> will not go anywhere near mainline:
>>
>> http://git.us.kernel.org/?p=linux/kernel/git/maz/arm-platforms.git;a=commitdiff;h=de81b299148b84548fe6c563d8d70dcfddf3145c;hp=edf2c53a89824cb5752d42b89997ae8bc96dcff8
> 
> With that patch, I still get an error:
> 
> clcd-pl11x mb:clcd: PL111 rev0 at 0x1c1f0000
> clcd-pl11x: probe of mb:clcd failed with error -2

No idea. You'll have to trace it, I'm afraid.

> I use the kvm-arm-3.5-rc3 branch right now. Is that the right one? It was suggested in the description here: https://wiki.linaro.org/PeterMaydell/KVM/HowTo/KVMHostSetup.

This is probably my last stable branch. The rest is work in progress.

	M.
-- 
Jazz is not dead. It just smells funny...


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