[Letux-kernel] LX20 prototype is booting

[H. Nikolaus Schaller]

> Am 29.04.2025 um 07:48 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
> 
> 
> 
>> Am 28.04.2025 um 22:18 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
>> 
>> So there is something wrong with passing or processing the command line...
>> Maybe kernel gets stuck in some loop.
>> Shouldn't be very difficult to analyse.
> 
> Ok, it turns out to be stuck in this panic (which can not be printed before standard printk is set up):
> 
> https://elixir.bootlin.com/linux/v6.1.28/source/drivers/of/fdt.c#L1265
> 
> So I have to analyse why memblock_alloc() fails. AFAIR we had a similar issue with the X1600.

Ok, it appears that there is no mem= entry in the command line... Hence there is no early
memory which can be allocated and

https://elixir.bootlin.com/linux/v6.1.28/source/mm/memblock.c#L295

fails to set the end (which is 0 by default) to a reasonable value.

This is consistent with that our 6.15 kernel and the sudomaker 6.1 kernel show the same
failure.

So we have to find the fix in our U-Boot and not the kernel. And it is likely something
very simple...

BR,
Nikolaus