Platform Management
Intel® Server Board X38ML
Revision
1.3
Intel order number E15331-006
68
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.
Table 33. Processor Sensors
Sensor Name
Description
Processor Status
Processor presence and fault state
Digital Thermal Sensor
Relative temperature reading via PECI
Processor Voltage
Discrete sensor that indicates a processor power good
state
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.
Table 34. Processor Status Sensor Implementation
Offset
Processor Status
Detected By
0
Internal error (IERR)
BMC
1 Thermal
trip
BMC
2
FRB1/BIST failure
Not Supported
3
FRB2/Hang in POST failure
BIOS
1
4
FRB3/Processor startup/initialization failure (CPU fails to start)
Not Supported
5
Configuration error (for DMI)
BIOS
6
SM BIOS uncorrectable CPU-complex error
Not Supported
7 Processor
presence
detected Not
Supported
8 Processor
disabled
BIOS
9 Terminator
presence
detected Not
Supported
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.