- Use new syscall API from hw
- 4 byte align the syscall function
- Restore blake2s
- Remove setting system_mode_ctrl since it is done by the hardware instead
Co-authored-by: Mikael Ågren <mikael@tillitis.se>
Add an erase command to let the user have more control over the
allocated area. This will also be more familiar to embedded developers.
As a bonus it minimizes the logic needed in firmware, and in theory we
can now increase the current write limit of one sector.
