IntelÃ‚Â® Server System Server System "Emerald Ridge ... - CTL

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錯誤 ! 尚未定義樣式。 EPSFunctional SpecificationCodeReason for Beep1-5-4-2 Power fault: DC power unexpectedly lost(power good dropout).1-5-4-4 Power control fault (power good assertiontimeout).Associated SensorsPower unit – power unit failureoffset.Power unit – soft power controlfailure offset.SupportedYesYes3.12.1 Signal GenerationThe BMC generates an NMI pulse under certain conditions. The BMC-generated NMI pulseduration is at least 30 ms. once an NMI has been generated by the BMC, the BMC does notgenerate another until the system has been reset or powered down.The following actions will cause the BMC to generate an NMI pulse:Receiving a Chassis Control command to pulse the diagnostic interrupt. This commanddoes not cause an event to be logged in the SEL.Detecting that the front panel diagnostic interrupt button has been pressed. See Section3.5.5.4.Watchdog timer pre-timeout expiration with NMI / diagnostic interrupt pre-timeout actionenabled.The following table shows behavior regarding NMI signal generation and event logging by theBMC.Causal EventChassis Control command (pulse diagnosticinterrupt)Table 9. NMI Signal Generation and Event LoggingNMI (IA-32 Only)Signal GenerationFront Panel Diag Interrupt Sensor Event LoggingSupportX –Front panel diagnostic interrupt button pressed X XWatchdog Timer pre-timeout expiration with NMI/ diagnostic interrupt actionX –3.13 Sensor Rearm Behavior3.13.1.1 Manual vs. Rearm SensorsSensors can be either manual or automatic re-arm. An automatic re-arm sensor will "re-arm"(clear) the assertion event state for a threshold or offset if that threshold or offset is deassertedafter having been asserted. This allows a subsequent assertion of the threshold or offset togenerate a new event and associated side-effect. An example side-effect would be boostingfans due to an upper critical threshold crossing of a temperature sensor. The event state andthe input state (value) of the sensor track each other. Most sensors are auto-rearm.A manual re-arm sensor does not clear the assertion state even when the threshold or offsetbecomes deasserted. In this case, the event state and the input state (value) of the sensor donot track each other. The event assertion state is "sticky".The following methods can be used to re-arm a sensor: Automatic re-arm – Only applies to sensors that are designated as “auto-rearm”.Revision 1.1Intel ® Confidential 23
錯誤 ! 尚未定義樣式。錯誤 ! 尚未定義樣式。 EPSIPMI command Re-arm Sensor Event.BMC internal method – The BMC may re-arm certain sensors due to a trigger condition. Forexample, some sensors may be re-armed due to a system reset.3.13.1.2 Rearm and Event GenerationAll BMC-owned sensors that show an asserted event status generate a deassertion SEL eventwhen the sensor is rearmed, provided that the associated SDR is configured to enable adeassertion event for that condition. This applies regardless of whether the sensor is athreshold/analog sensor or a discrete sensor.To manually re-arm the sensors, the sequence is outlined below:1. A failure condition occurs and the BMC logs an assertion event.2. The sensor is rearmed by one of the methods described in the previous section.3. The BMC clears the sensor status and, if so configured, generates a deassertion event.4. The sensor is put into “reading-state-unavailable” state until it is polled again orotherwise updated.5. The sensor is updated and the “reading-state-unavailable” state is cleared. A newassertion event will be logged if the fault state is once again detected.There are some special cases, specifically for sensor offsets representing presence condition,where regeneration of events due to a manual rearm may be suppressed. This is noted in thesections describing the specific sensors.All auto-rearm sensors that show an asserted event status generate a deassertion SEL event atthe time the BMC detects that the condition causing the original assertion is no longer presentand the associated SDR is configured to enable a deassertion event for that condition.3.14 Processor SensorsThe BMC provides IPMI sensors for processors and associated components, such as voltageregulators and fans. The sensors are implemented on a per-processor basis.Table 10. Processor SensorsSensor NamePer-ProcProcDescriptionSocketProcessor Status Yes Processor presence and fault stateDigital Thermal Sensor Yes Relative temperature reading via PECIProcessor VRD Over-TemperatureIndicationYesDiscrete sensor that indicates a processor VRDhas crossed an upper operating temperaturethresholdProcessor Voltage Yes Threshold sensor that indicates a processorpower good stateProcessor Thermal Control(Prochot)YesPercentage of time a processor is throttling dueto thermal conditions24Intel ConfidentialRevision 1.1
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IntelÃ‚Â® Server System Server System "Emerald Ridge ... - CTL

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