[Linaro-acpi] Touching the initrd before paging_init

[G Gregory]

On 15 December 2015 at 16:13, G Gregory <graeme.gregory at linaro.org> wrote:
> On 15 December 2015 at 15:36, Jon Masters <jcm at redhat.com> wrote:
>> On 12/15/2015 06:19 AM, G Gregory wrote:
>>
>> <below refers to the GRUB-based approach not the initrd override>
>>
>>> Tried it, results were not great :-(
>>>
>>> set root='hd0,gpt2'
>>> insmod acpi
>>> acpi /DSDT.aml
>>> linux /Image-leg earlycon=pl011,0xe1010000 console=ttyAMA0 acpi=force root
>>> =/dev/sda2
>>
>> <snip>
>>
>>> [    0.000000] PC is at setup_arch+0xfc/0x564
>>> [    0.000000] LR is at setup_arch+0xf8/0x564
>>
>> <snip>
>>
>> So we unmask SError in setup_arch, which happens now later enough that
>> it'll come out of the UART where you can see it. However there are still
>> occasions on some of these early platforms where an unhandled SError can
>> exist as GRUB exits. I have seen that a number of times on Seattle if
>> there's a pending error from one of the IO IP blocks on the SoC You
>> might need a firmware update, but can you also confirm that this
>> happened reproducibly?
>>
> It is Seattle RevB I am using and it is repeatable. I have pre-release
> firmware on there!
>
Repeatable on ROD0084E as well.

Graeme