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

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Intel® Server System "Emerald Ridge” Integrated BaseboardManagement Controller EPSAppendix A: OEM SDR RecordsByte10NameFan Profile SupportTemperature Sensor Sub-recordsDescriptionFan Control Profile Support. This bitmask indicates which fan controlprofiles that this record is valid for.Bit[7] 1 = Valid for profile 7[6] 1 = Valid for profile 6[5] 1 = Valid for profile 5[4] 1 = Valid for profile 4[3] 1 = Valid for profile 3[2] 1 = Valid for profile 2[1] 1 = Valid for profile 1[0] 1 = Valid for profile 0Table 90 contains the stepwise linear FSC SDR sub-record format. The front panel thermalsensor and any board level thermal sensors will follow the stepwise linear control algorithmand all the parameters documented in the table below. Front panel and/or board temperaturesensors are intended to be used to thermally managed components without a temperaturesensor by setting minimum FSC.Table 91 shows the clamped algorithm FSC SDR sub-record. All component (CPU, chipset,memory, etc.) thermal sensors will follow the clamped algorithm and all the parametersdocumented in Table 91.Table 89. Temperature Fan Speed Control SDR Record Format, Version 2ByteNameDescription0:2 OEM ID Intel manufacturer’s ID – 157h, little endian.3 Record Subtype Value 0Ch.Temperature Fan Control Record4 Record Version Version # of this specific SDR record subtype. Set to 01h for the formatdescribed in this document.5 Fan Control Domain Fan control domain number defined in the platform spec.6 Normal Control Value If no temperature sub-records present:The PWM value (% value – 0-100) to use when fans are commanded tobe at nominal speed.If only clamp type temperature sub-records present:The PWM value (% value – 0-100) base for contributions from theclamp type sub-records.In all cases:7 Boost Control Value If value is 0-100:Minimum PWM value (% value – 0-100) that the BMC must guaranteewill be in effect for the domain at all times.PWM value (%) to use when a fan has failed or a critical temperaturehas been detected.If value = 0xFF:Use Boost values from sub-recordRevision 1.0Intel ® Confidential 167
Appendix A: OEM SDR RecordsIntel® Server System "Emerald Ridge” Integrated BaseboardManagement Controller EPSByteNameDescription8 Ramp Step Max step up / down ramp (in %) when applying contribution.9 Scan Rate Number of scan cycles before applying the next ramp step.10Fan Profile SupportTemperature Sensor Sub-recordsFan Control Profile Support. This bitmask indicates which fan controlprofiles that this record is valid for.Bit[7] 1 = Valid for profile 7[6] 1 = Valid for profile 6[5] 1 = Valid for profile 5[4] 1 = Valid for profile 4[3] 1 = Valid for profile 3[2] 1 = Valid for profile 2[1] 1 = Valid for profile 1[0] 1 = Valid for profile 0Additive type Temperature Sensor sub-recordTable 90. Stepwise Linear type Temperature Sensor sub-recordByteNameDescription0 Sensor Owner ID [7:1] – 7-bit I 2 C slave address or 7-bit system software ID1 Temperature SensorNumber2 Temp Sensor Failure ControlValue[0]0b = ID is IPMB slave address1b = ReservedSensor number of the temperature sensor associated with the fancontrol domain.This is the PWM value (% value – 0-100) to use if the giventemperature sensor is in update-in-progress state (indicating noupdate has occurred). If the sensor is in a disabled state, then thissub-record does not contribute to the fan speed control.4 Sleep Control Offset/Value Signed PWM offset (% value – 0-100) or value to use when thesystem is in S1 sleep state. This offset/value is applied as describedin the S1 sleep state support parameter description.5 Control Type and SleepState Support[7:6] S1 sleep state support0 = Ignore sub-record1 = Use sensor but apply sleep control offset to PWM output drivenfor this fan domain2 = Ignore sensor and apply sleep control offset to PWM outputdriven for this fan domain3 = Ignore sensor and use fixed sleep control PWM value as fandomain PWM contribution for this sub-record[5:3] - Reserved[2:0] - Control Type = 001 b (stepwise linear)168Intel ConfidentialRevision 1.1
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