Kontron AM4901 IPMI - Manual (Page 17)

AM5901/AM4901 IPMI Firmware User Guide
ID: 1035-8760, Rev. 3.0 Page 17
3.3 Activation and Deactivation of MCH and AMC Modules
Once the MCH is activated, it automatically controls the activation and deactivation of all AMC
modules under its control in accordance with the position of the AMC module Hot Swap switch-
es. In the process, E-keying is performed in accordance with the FRU data of the involved de-
vices: MCH, backplane, AMC modules, and power modules if installed.
If the MCH is deactivated (Hot Swap switch open, blue LED off), then all AMC modules that are
currently active (blue LED off) and supervised by the MCH are deactivated. In the opposite
case, if the MCH is activated (Hot Swap switch closed, blue LED on) all AMC modules currently
supervised by the MCH which have their Hot Swap switches closed are also activated.
Activation or deactivation of the entire system or individual AMC modules is possible by issuing
standard IPMI commands to the MCH in accordance with the applicable specification. The IPMI
commands "Set FRU Activation" and "Set FRU Activation Policy" are available for this purpose.
The Hot Swap switches of the devices addressed must be in the closed state.
Conflicts arising from the activation or deactivation of the MCH or an AMC module as a result
of too quickly opening or closing of the device's Hot Swap switch are solved by first completing
the action that was started, and then determining how to further proceed on the basis of the
current position of the involved Hot Swap switch.
3.3.1 Sequence of Activation and Deactivation of AMC Modules
The sequence of activation is defined by the backplane FRU data. There the priority of the slots
is defined. The sequence of deactivation is the reverse. If this sequence is not sufficient and it
is not possible or desirable to adapt the FRU data to the situation (e.g. for tests only), there is
the CLI command ‘prioopts’ and the IPMI OEM command ‘Set Priority Options Parameters’ for
manually setting slot priority parameters.
3.3.2 Timing for Activation and Deactivation of AMC Modules
The timing during activation and deactivation is defined by the backplane FRU data. During
activation the maximum wait time for a module to become operational and the wait time after
the activation of every slot is defined. If the wait time specified is not sufficient and it is not
possible or desirable to modify the FRU data to support the current activity (e.g. for tests only),
the CLI command ‘activopts’ and the IPMI OEM command ‘Set Activation Options Parameters’
are available to manually set timing parameters.
If the maximum activation wait time for a given module is exceeded before it reaches state M4,
a warning message will be displayed at the console:
This message indicates that the module in slot has caused an activation timeout
during the activation sequence and will be ignored. The specified activation sequence has
failed.
The operator should then verify the status of the module in question and correct the selected
mode and time parameters as required using the CLI command or IPMI OEM command indi-
cated above.
WARNING: ACTIVATION TIMEOUT FOR MODULE IN SLOT .
CHECK MODULE AND PARAMETERS! ‘activopts’ MODE IS .