I am running with the following bblayer setup for a rasberrypi 3a+ board project.
I am facing the problem that even the rpi has 512 MB of ram only 256 MB is accessible by the running applications. The other 256 MB of memory are reserved by kernel CMD (contiguous memory allocator) and compared to rasbpian which only uses 8 MB for CMD.
Q1: It seems to be strange that 256 MB ram is reserved for the kernel by default since it is only 8 MB on the raspbian-buster distro. Is this standard what you get with the above bblayer setup without any tweaking?
Q2: I think this could be changed by changing somehow the boot arguments for the kernel. Is this a problem for mender u-boot?
Q3: How can this be done? Any advice where to start (maybe an example) would be very helpful.