arch/riscv: Refactor SMP code

Currently only a fixed number of harts/cores can be detected.

This patch adds a Kconfig option which allows to detect the number of
harts at runtime if a SOC or mainboard has a scheme to do so.
As part of that patch SMP logic has been mostly moved to smp_resume,
since it is easier to debug issues at the time smp_resume is called
than it is at smp_pause, since the serial is usually not present at the
time of the first smp_pause call.

Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: Icc53185991fed4dbed032a52e51ff71d085ad587
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81082
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Alicja Michalska <ahplka19@gmail.com>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>

0 files changed, 0 insertions, 0 deletions