If OPAL_RTC_READ is busy and does not return the information on the first run,
as returning OPAL_BUSY_EVENT, the system will crash since ymd and hmsm variable
will contain junk values.
This is happening because we were not calling OPAL_RTC_READ again after
OPAL_POLL_EVENTS' return, which would finally replace the old/junk hmsm and ymd
values.
The code was also mixing OPAL_RTC_READ and OPAL_POLL_EVENTS return values.
This patch fix this logic and guarantee that we call OPAL_RTC_READ after
OPAL_POLL_EVENTS return, and guarantee the code will only proceed if
OPAL_RTC_READ returns OPAL_SUCCESS.
Reviewed by: jhibbits
Approved by: jhibbits (mentor)
Differential Revision: https://reviews.freebsd.org/D16617
Add function which can store RTC values to OPAL.
Submitted by: Wojciech Macek <wma@semihalf.org>
Obtained from: Semihalf
Sponsored by: IBM, QCM Technologies
Add basic power control (reset, power off) and bind
ttyuX to opal console so that init will start login there.
Created by: Nathan Whitehorn <nw@freebsd.org>
Submitted by: Wojciech Macek <wma@freebsd.org>
Sponsored by: FreeBSD Foundation
