CVS commit: src/sys/arch/alpha

["Jason R Thorpe" <thorpej%netbsd.org@localhost>]

Module Name:    src
Committed By:   thorpej
Date:           Wed Mar  6 07:34:11 UTC 2024

Modified Files:
        src/sys/arch/alpha/alpha: mcclock.c mcclockvar.h
        src/sys/arch/alpha/gbus: mcclock_gbus.c

Log Message:
Alpha systems based on the "Laser" and "TurboLaser" system architecture
have an interesting feature: the RTC and console UART are present on each
CPU module, but only those peripherals on the "primary" CPU module matter,
because each CPU's module's periperals are mapped to the same physical
address, but are only accessible by that CPU module.  The firmware selects
a primary CPU to boot the system, and that CPU's RTC and UART are the
system RTC and console, respectively.

To handle this, on systems where it's needed, we wrap the RTC gettime/settime
calls and, if not running on the primary CPU already, cross-call to the primary
to perform the RTC access.


To generate a diff of this commit:
cvs rdiff -u -r1.22 -r1.23 src/sys/arch/alpha/alpha/mcclock.c
cvs rdiff -u -r1.6 -r1.7 src/sys/arch/alpha/alpha/mcclockvar.h
cvs rdiff -u -r1.4 -r1.5 src/sys/arch/alpha/gbus/mcclock_gbus.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.