[PATCH 2/5] arm: mvebu: Move internal registers in arch_very_early_init() function

[Stefan Roese]

Hi Pali,

On 01.06.22 12:27, Pali Rohár wrote:
> On Friday 06 May 2022 14:44:48 Pali Rohár wrote:
>> On Friday 06 May 2022 14:35:55 Stefan Roese wrote:
>>> While doing this I noticed though, that kwboot UART booting only worked
>>> in roughly 1 out of 2 cases. With no progress after this line:
>>>
>>> Sending boot message. Please reboot the target...\
>>>
>>> IIRC, this worked more reliable a few weeks ago. Any idea, what might
>>> have caused this regression - if I am correct here?
>>
>> There were changes in handling of bootrom boot message. There is option
>> -s which can change default timeout option. And plus there is option -a
>> which sets this timeout option to AXP value.
>>
>> Default value is 50 and for AXP default value is 1000.
>>
>> Maybe it is needed to tune AXP value... Try to call with -s option
>> between 50 and 1000...
> 
> Hello Stefan! Have you tried to tune kwboot's -s or -a option for AXP board?

Thanks for getting back on this. I totally forgot about it.

'-a' makes it actually worse. Zero success with 5 tries. '-s 10' worked
5 out of 5 times. So I'll stick with this version I think.

Thanks,
Stefan