>What does matter is standardization. For example a booting process.

Truth.

This is why RISC-V put a lot of effort on this, and put it early.

Relevant specs include but isn't limited to SBI[0], UEFI protocol[1] and the ongoing platform specification[2].

0. https://github.com/riscv-non-isa/riscv-sbi-doc/releases

1. https://github.com/riscv-non-isa/riscv-uefi/releases/tag/1.0...

2. https://github.com/riscv/riscv-platform-specs