Change in coreboot[master]: acpi,Makefile: Add preload_acpi_dsdt

[Raul Rangel (Code Review)]

Attention is currently required from: Lance Zhao, Patrick Georgi, Martin Roth, Tim Wawrzynczak, Julius Werner.
Raul Rangel has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/59504 )

Change subject: acpi,Makefile: Add preload_acpi_dsdt
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Patch Set 2:

(1 comment)

Patchset:

PS2:
> > I agree we can look into other solutions, but can we keep it simple for now? […]

Ah great, I didn't want to take another detour :)

IMO, it needs to be at a lower layer. APOB prefetch (start_apob_cache_read) only uses fmap_locate_area_as_rdev, so making it call into cbfs gets a little strange... Come to think of it, ELOG also uses a raw region.

I think we can make threads cheaper. Before, when they used v1 cpu_info(), the stack size needed to match the BSP stack size. Now that it's decoupled we can in theory resize the thread stack size. We could add a simple runtime stack size check that prints out the total stack used when we terminate a thread. This will help tuning that value.