BIOS Initialization Intel® Server System S7000FC4UR
Revision 1.0
132
See the chipset technical documentation for a detailed description regarding the FBDIMM Error
Recovery Scheme. The documentation covers both memory read and memory write
transactions in redundant mode.
14.2.14.5 Memory Error Handling
Memory errors are reported through a variety of platform-specific elements, as described in this
section.
Table 31. Memory Error Reporting Agent Summary
Platform Element Description
POST Error Manager Memory errors found during the POST MemBIST are reported in the BIOS Error
Manager.
POST Beep Codes The BIOS emits beep code for the following cases:
Where the system has no memory, or
When a link failure is detected during memory discovery, causing all memory
to be mapped out.
BIOS Setup Screen When FBDIMMs fail MemBIST, or RAS configuration errors occur, the FBDIMM
status is captured in the Advanced | Memory screen in BIOS setup.
System Event Logging
(SEL)
When a memory error occurs at runtime, the BIOS logs the error into the
Baseboard Management Controller (BMC) System Event Log (SEL) repository in
compliance with the formats described in the Error Handling section.
Memory Riser Board
DIMM Fault Indicator LEDs
A set of DIMM Fault Indicator LEDs is on each memory riser board. One LED is
provided for each FBDIMM socket.
Front Panel
System Fault/Status LED
There is a Front Panel System Fault Status LED. The BIOS controls the behavior
of this LED using BMC commands in response to certain memory sub-system
errors.
BMC Memory RAS The BIOS sends the memory riser board and FBDIMM status to the BMC during
POST and in response to certain memory subsystem error conditions at runtime.
The user can retrieve this information from the BMC.
NMI Generation The BIOS triggers / initiates an NMI to halt the system when a critical error occurs.
The tables on the following pages describe the platform response to various memory sub-
system errors both during POST and runtime.
The BIOS issues a Set Fault Indication command to the BMC to request a change to the Front
Panel System Fault Status LED. The table below indicates the desired behavior of the LED after
this command.
The BMC maintains an internal state machine to manage requests from different sources so the
final behavior of the LED may differ from what the BIOS requests.
To Next Page
Loading...
Need help?
General
