Private Management I 2 C Buses; Watchdog Timer; System Event Log (Sel); Table 38. Secure Mode Versus Acpi State - Intel 5000 Series Datasheet

Intel® 5000 Series Chipsets Server Board Family Datasheet
Front panel lock-out allows specific front panel buttons to be protected. This protection includes
blocking the buttons and generating violation events if one of the buttons is pressed while the
front panel is in a lock-out state. Support is available only for protecting the front panel power
and reset buttons as a unit. These buttons cannot be individually locked.
The set of buttons that is protected when front panel lock-out mode is active varies, depending
on the system ACPI power state.
ACPI Power Button
State
S0 Protected
S1 / S3 Unprotected
S4 / S5 Unprotected
4.6 Private Management I
The BMC controls multiple private I
4.7

Watchdog Timer

The BMC implements a fully IPMI 2.0 compatible, watchdog timer. See the IPMI specifications
for details. The NMI / diagnostic interrupt specified for an IPMI 2.0 watchdog timer is associated
with an NMI on IA-32 platforms. A watchdog pre-timeout SMI (or equivalent signal assertion) is
not supported on platforms that use one of the Intel
4.8

System Event Log (SEL)

The BMC implements the logical system event log as specified in the Intelligent Platform
Management Interface Specification, Version 2.0. The SEL is accessible via all communication
transports. This way, out-of-band interfaces can access SEL information while the server is
down.
The BMC allocates 65,536 bytes (64 KB) of non-volatile storage space for storing system
events. Every system log record is padded with an extra four-byte timestamp that indicates
when the record is deleted, making each SEL record 20 bytes in size. This means there can be
up to 3,276 SEL records stored at a time. An attempt to add a SEL record after 3,276 records
are stored results in a failure, and the out of space completion code is returned.
Revision 1.1

Table 38. Secure Mode versus ACPI State

Reset Button Diagnostic Interrupt Button
Protected Unprotected
Unprotected Unprotected
Unprotected Unprotected
2 C Buses
2
C buses. The BMC is the sole master on these buses.
Intel order number D38960-004
(Front Panel NMI)
®
5000 Series Chipsets.
System Management
ID Button
Unprotected
Unprotected
Unprotected
109