Benjamin Lamowski ec5e1a6b4b hw: calibrate Local APIC via ACPI timer
Upto now, bootstrap used the Programmable Interval Timer to set a
suitable divider and determine the frequency of the Local APIC.
The PIT is not available on recent x86_64 hardware anymore.

Move Local APIC calibration to bootstrap and use the ACPI timer as a
reference. Clean up hw's timer implementation a little and disable the
PIT in bootstrap.

Fixes #5215
2025-01-30 16:30:14 +01:00
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