System Security - Intel R440LX Product Manual

PBC—The PBC monitors processor voltage levels, processor thermal trip
and internal error signals, and provides the interface to the board ID
information. The PBC can be polled for current status or configured to
automatically send an alert message when an error condition is detected.
The PBC implements Fault Resilient Booting (FRB) levels 1, 2, and 3. If two
processors are installed and the processor designated as the bootstrap
processor fails to complete the boot process, FRB attempts to boot the
system using the alternate processor.
•
FRB level 1 is for recovery from a BIST failure detected during
POST. This FRB recovery is fully handled by BIOS code.
•
FRB level 2 is for recovery from a Watchdog timeout during
POST. The Watchdog timer for FRB level 2 detection is
implemented in the PBC.
•
FRB level 3 is for recovery from a Watchdog timeout on hard
reset / power up. Hardware functionality for this level of FRB
is managed by the PBC on the processor subsystem.
DISMIC—The two microcontrollers on the motherboard communicate
using the IMB bus. The BMC and DISMIC manage communication between
this distributed controller network, SMI handler, and Systems Management
Software (SMS) running on the server. The DISMIC functions as a bridge
between the BMC and ISA bus.

System Security

The Setup program enables you to set both an administrative and a user
password. To set a password, see Chapter 2.
R440LX Server Motherboard Product Guide
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