Failed to boot ARM64 boards for recent linux-next
Marc Zyngier
marc.zyngier at arm.com
Tue Mar 20 09:06:41 PDT 2018
Hi John,
On 20/03/18 15:52, John Garry wrote:
> On 20/03/2018 13:34, Marc Zyngier wrote:
>> On 20/03/18 10:13, JeffyChen wrote:
>>> Hi Shawn,
>>>
>>> On 03/20/2018 05:39 PM, Shawn Lin wrote:
>>>>
>>>>
>>>> Also another patch warns a lot when booting the kernel. Is there
>>>> anything else I could do to let it go? Seems I am using broken
>>>> dts for requesting IRQ_TYPE_NONE there?
>>>
>>> could be:
>>> https://github.com/torvalds/linux/blob/master/drivers/irqchip/irq-gic-v3.c#L1145
>>>
>>> struct irq_fwspec ppi_fwspec = {
>>> .fwnode = gic_data.fwnode,
>>> .param_count = 3,
>>> .param = {
>>> [0] = 1,
>>> [1] = i,
>>> [2] = IRQ_TYPE_NONE, <--
>>> },
>>> };
>>>
>>> irq = irq_create_fwspec_mapping(&ppi_fwspec);
>>
>> Probably is. Caught at my own game, fun! ;-)
>>
>> Turning that NONE into LEVEL will work, as there is no known PPIs
>> configured as edge (specially in a partitioned system), but the general
>> case isn't pretty. I'll queue a workaround for now, and will look at
>> addressing the more general issue.
>>
>
> JFYI, reverting the original patch mentioned by Shawn resolved the boot
> hang I was seeing on my Huawei D03. My D05 was fine without the revert.
I guess your D05 doesn't set SCR_EL3.FIQ, meaning that no Group-0
interrupts can reach the firmware. Hopefully it doesn't need them.
Would you mind testing the last patch I posted earlier today[1]?
Thanks,
M.
[1] https://www.spinics.net/lists/arm-kernel/msg642440.html
--
Jazz is not dead. It just smells funny...
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