Intel® Server Board X38ML
Platform Management
Revision 1.3
Intel order number E15331-006
63
Color
State
System Status
Description
Amber
Solid on
Fatal
Fatal alarm – system has failed or shutdown. Condition detected by
BMC.
CPU IERR signal asserted
CPU
THERMTRIP
No power good – power fault
Off
N/A
Not ready
Power off
Note:
Support for upper non-critical state is not provided in default SDR configuration. If a user
enables this threshold in the SDR, then the system status LED behaves as described.
5.7.3
Front Panel/Chassis Inputs
The BMC monitors the front panel buttons and other chassis signals. The front panel input
buttons are momentary contact switches that are de-bounced by the BMC’s integrated
hardware. The de-bounce time is 8 ms; the signal must be in a constant low state for 8 ms
before it is treated as asserted. BMC de-bouncing does not affect the operation of the power or
reset button, since the power and reset buttons are connected to the chipset. The de-bouncing
is only for BMC monitoring.
5.7.3.1
Chassis Intrusion
Chassis intrusion detection is supported. The BMC monitors the state of the
Chassis Intrusion
signal and makes the status of the signal available via the
Get Chassis Status
command and
the
Physical Security
sensor state. A chassis intrusion state change causes the BMC to
generate a
Physical Security
sensor event message with a
General Chassis Intrusion
offset
(00h).
The BMC boosts all fans when the chassis intrusion signal is active. Fans return to their
previous level when the chassis intrusion signal is no longer active. This provides sufficient
cooling during system servicing. The BMC monitors the chassis intrusion cable. If the cable is
missing, the BMC logs a SEL event and sets the chassis intrusion status to the init-in-progress
state.
The BMC detects chassis intrusion and logs a SEL event when the system is in an on, sleep, or
standby state. Chassis intrusion is not detected when the system is in an AC power-off state.
5.7.3.2
Power Button
See Section 5.2.5.1.
5.7.3.3
Reset Button
An assertion of the
Front
Panel Reset
signal to the BMC causes the system to start the reset
and reboot process, as long as the BMC has not locked-out this input. This assertion is
immediate and without the cooperation of software or the operating system.
See Section 5.4.3.
5.7.4
Front Panel Lock-out Operation
You can lock the front panel using the
Set Front Panel Enables
command. You can check the
front panel lock-out status using the
Get chassis Status
command.