Changeset bc731313 in rtems for c/src/lib/libbsp

Timestamp:
08/13/18 10:55:34 (6 years ago)
Author:
Amaan Cheval <amaan.cheval@…>
Branches:
5, master
Children:
adbd7e7
Parents:
6869321
git-author:
Amaan Cheval <amaan.cheval@…> (08/13/18 10:55:34)
git-committer:
Joel Sherrill <joel@…> (08/13/18 15:48:20)
Message:

bsps/x86_64: Add APIC timer based clock driver

The APIC timer is calibrated by running the i8254 PIT for a fraction of a
second (determined by PIT_CALIBRATE_DIVIDER) and counting how many times the
APIC counter has ticked. The calibration can be run multiple times (determined
by APIC_TIMER_NUM_CALIBRATIONS) and averaged out.

Updates #2898.

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