5 ms·

Yep, and if you're playing with your own homebrew OS or other non-linux OSes you don't really need all of OpenSBI - implementing the equivalent of putchar() and

Yep, and if you're playing with your own homebrew OS or other non-linux OSes you don't really need all of OpenSBI - implementing the equivalent of putchar() and a few timer calls will get you up and running. (Source - did bring up for rv32 simulators running TockOS and seL4).

Taniwha 3y ago
you may need the emulation of unaligned memory accesses - which is something else that OpenSBI does for you
kaycebasques 3y ago
Are there any highly regarded bringup docs out there? I.e. docs from an OS, emulator, etc. that do a great job of explaining how to get the OS running on new hardware. Or is it usually just done by studying previous code examples and asking experts for help?
- arcbyte 3y ago
  Plugging osdev.org in case its new to you.
- snvzz 3y ago
  As it applies to RISC-V, you'll want to get started by looking at the privileged ISA spec, the SBI spec and the platform spec.