5.15 Processor Sensors; Processor Status Sensors; Table 33. Processor Sensors; Table 34. Processor Status Sensor Implementation - Intel X38ML - Server Board Motherboard Technical Manual

Platform Management

5.15 Processor Sensors

The BMC provides IPMI sensors for processors and associated components, such as voltage
regulators and fans. The sensors are implemented on a per-processor basis.
Sensor Name
Processor Status
Digital Thermal Sensor
Processor Voltage
5.15.1

Processor Status Sensors

The BMC provides an IPMI sensor of type processor for monitoring status information for each
processor slot. Except for the processor presence offset, if an event state (sensor offset) is
asserted, it remains asserted until one of the following happens:
A Rearm Sensor Events command is executed for the processor status sensor.
AC or DC power cycle or system boot occurs.
The BMC provides system status indication to the front panel LEDs for processor fault
conditions shown in the table below. For more information refer to Section 5.7.2.
Offset
0 Internal error (IERR)
1 Thermal trip
2 FRB1/BIST failure
3 FRB2/Hang in POST failure
4 FRB3/Processor startup/initialization failure (CPU fails to start)
5 Configuration error (for DMI)
6 SM BIOS uncorrectable CPU-complex error
7 Processor presence detected
8 Processor disabled
9 Terminator presence detected
Note:
1. The fault is not reflected in the processor status sensor.
5.15.1.1 ThermTrip Monitoring
The BMC retains ThermTrip history for each processor. This history tracks whether the
processor has had a ThermTrip since the last processor sensor re-arm or retest.
When a ThermTrip occurs, the BMC polls the ThermTrip status for each processor and then the
system begins the power down sequence. If the BMC detects a ThermTrip occurred, it sets the
ThermTrip offset for the applicable processor status sensor.
This ThermTrip data is not persistent across AC or DC cycles.
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Table 33. Processor Sensors

Processor presence and fault state
Relative temperature reading via PECI
Discrete sensor that indicates a processor power good
state

Table 34. Processor Status Sensor Implementation

Processor Status
Intel order number E15331-006
Intel® Server Board X38ML
Description
Detected By
BMC
BMC
Not Supported
1
BIOS
Not Supported
BIOS
Not Supported
Not Supported
BIOS
Not Supported
Revision 1.3