System Management Ipmc Watchdog Timer Commands

System Management: IPMC Watchdog Timer Commands

IPMC WATCHDOG TIMER COMMANDS

The IPMC implements a standardized ‘Watchdog Timer’ that can be used for a number of system time-out functions by System Management Software (SMS) or by the monitor. Set- ting a time-out value of zero allows the selected time-out action to occur immediately. This provides a standardized means for devices on the IPMB to perform emergency recovery actions.

Table 7-7:IPMC Watchdog Timer Commands

Command:	See Page:	Optional/Mandatory:
Reset Watchdog Timer	7-14	M

Set Watchdog Timer	7-14	M

Get Watchdog Timer	7-16	M

Watchdog Timer Actions

The following actions are available on expiration of the Watchdog Timer:

•System Reset

•System Power Off

The System Reset and System Power Off on time-out selections are mutually exclusive. The watchdog timer is stopped whenever the system is powered down. A command must be sent to start the timer after the system powers up.

Watchdog Timer Use Field and Expiration Flags

The watchdog timer provides a ‘timer use’ field that indicates the current use assigned to the watchdog timer. The watchdog timer provides a corresponding set of ‘timer use expira- tion’ flags that are used to track the type of time-out(s) that had occurred.

The time-out use expiration flags retain their state across system resets and power cycles, as long as the IPMC remains powered. The flags are normally cleared solely by the Set Watch- dog Timer command; with the exception of the “don’t log” flag, which is cleared after every system hard reset or timer time-out.

The Timer Use fields indicate:

Monitor FRB-2 Time-out:

A Fault-resilient Booting, level 2 (FRB-2) time-out has occurred. This indicates that the last system reset or power cycle was due to the system time-out during POST, presumed to be caused by a failure or hang related to the bootstrap processor.

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ATCA-9305 User’s Manual

10009109-01

ATCA-9305 specifications

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Emerson ATCA-9305 System Management Ipmc Watchdog Timer Commands, Watchdog Timer Actions

Models: ATCA-9305