May i get some help before starting porting NuttX to a new arch namely LoongArch

Hello there,
I\`m trying to port NuttX to LoongArch, which is used in 64-bit microcontroller.
Currently i`m a student and hope to learn some OS knowledge during porting.

Is it a good choice to take riscv-k210 as a referrence?
I\`m planning to read documents from official NuttX website.
I\`ve glanced some code snippets and found the code for uart, interrupt and so on. But i didn`t find out how the memoy page table was established (Sorry for my poor knowledge). Can i get some help about memory mapping? Like: the layout of virtual memory.

Could you tell me something about the proper process of porting NuttX? Maybe start with head.S, uart, memory mapping...and something else?

Thanks a lot :)