How do I use both internal and external HyperRAM/OctaRAM as system memory on RZ/A2M?

Hi all,

I have a RZ/A2M development board and I would like to use both the internal and external RAM (only HyperRAM, not the SDRAM).

Surfing the forum I saw this topic a lot of times and follow the procedures in order to obtain the same of the  RZ/A1H for this board (of course I adapt the procedure to my board).

This is the topic: https://renesasrulz.com/rz/f/rz---forum/6488/sdram/20323

...but I'm not able to use the internal block of memory (the internal 4MB RAM).

There are some tricks or suggestions that differs from the RZ/A1H CPU?

Thanks a lot and best regards,

Matteo