[PATCH v3 0/3] Ethernet support for Raspberry Pi 4

[Matthias Brugger]

On 28/01/2020 23:21, Jaehoon Chung wrote:
> On 1/27/20 9:06 PM, Andre Przywara wrote:
>> On Mon, 27 Jan 2020 12:50:16 +0100
>> LABBE Corentin <clabbe at baylibre.com> wrote:
>>
>> Hi,
>>
>>> On Mon, Jan 27, 2020 at 04:27:03PM +0530, Amit Tomer wrote:
>>>> Hi,
>>>>   
>>>>> The kernel panic just after with "OF: reserved mem: failed to allocate memory for node 'linux,cma'" but that's another story.  
>>>>
>>>> But this comes even without having Ethernet patches and when one use
>>>> booti instead of bootefi, right ?
>>>>   
>>>
>>> So booti is unsupported on rpi 4 ?
>>
>> It should be supported, but apparently there is some bug. I guess it's about not properly reserving memory used by the armstub/ATF. Do you use the embedded RPi foundation armstub or ATF (do you have an "armstub=..." line in config.txt)?
>>
>> I will try take a look at this later.
> 
> I'm not sure, i had similar issue about failed to allocate memory cma.
> I had enabled CONFIG_ARCH_FIXUP_OF_MEMORY. And i changed the loading address (kernel/ramdisk/device-tree) in boot script for our environment.
> Because sometime some address range is overwritten.
> 

Can you share some more details? Might it make sense to change the memory
addresses in include/configs/rpi.h so that it work out-of-the-box for all cases?

Regards,
Matthias