Technical Advisory TA-915-06t

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This Technical Advisory describes an issue which affects product functionality, reliability or safety

Intel Technical Advisory TA-915-7

5200 NE Elam Young Parkway

Hillsboro, OR 97124

November 11, 2008

BIOS may cause Non-Maskable Interrupts (NMI) during boot

Information in this document is provided in connection with Intel products. No license, express or implied, by estoppel or otherwise,

to any intellectual property rights is granted by this document. Except as provided in Intel's Terms and Conditions of Sale for such

products, Intel assumes no liability whatsoever, and Intel disclaims any express or implied warranty, relating to sale and/or use of

Intel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent,

copyright or other intellectual property right. Intel products are not intended for use in medical, life saving, or life sustaining

applications. Intel may make changes to specifications and product descriptions at any time, without notice. The products listed in

this document may contain design defects or errors known as errata which may cause the product to deviate from published

specifications. Current characterized errata are available on request.

Products Affected

• MFSYS25

• MFS5000SI

• MFS5000SIB

• S5000PSLR

• S5000XVNR

• S5000PALR

• SR2500ALLXR

• SR2500ALBRPR

• SR1550ALR

• SR1550ALSR

• SR1550ALSASR

• S5000VSAR

• SR2520SAXSR

• SR2520SAXR

• SR2520SAFR

• S5000VCLR

• SR1530HCLR

• SR1530HCLSR

• SR1530CLR

• T5000PAL

• NSC2U

• TIGH2U

• S5000PHB

• TIGW1U

• NSW1U

• SSR212MC2

Description

An issue has been discovered by an Intel customer implementing Intel

Xeon

Processors 5400 Series E-0 stepping

and BIOS R0091 or Intel

Modular Server BIOS R0047. Approximately one out of three boots will exhibit an NMI with

one or more of the following characteristics:

• Immediately following POST, the following error may be seen: “NMI detected. System Halted”, followed by a

system hang.

• No POST, no video (system hang).

• System hang with the following POST Code LED indicators: MSB off | off | green | amber LSB

• In some instances uncorrectable memory errors may be falsely reported in the System Event Log (SEL) and

DIMM’s C1 and D1 may be taken offline.

Summary of content (3 pages)

PAGE 1
This Technical Advisory describes an issue which affects product functionality, reliability or safety Intel Technical Advisory TA-915-7 5200 NE Elam Young Parkway Hillsboro, OR 97124 November 11, 2008 BIOS may cause Non-Maskable Interrupts (NMI) during boot Information in this document is provided in connection with Intel products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document.
PAGE 2
Root Cause Some combinations of processor and memory speeds created a timing issue that resulted in application processors (APs) being out of synchronization. When BIOS code is executed on APs that are out of synchronization an NMI is generated. Corrective Action / Resolution During Power-on self-test (POST) several milliseconds of delay were added after commands that request all APs to run the same code. This ensures all APs are synchronized before continuing BIOS execution. Intel® Modular Server UFU 2.
PAGE 3
NSW1U SSR212MC2 S5000XVNR MFSYS25 MFS5000SI MFS5000SIB BIOS R91 or R91.6 UFU P2.3.1 or P2.3.5 BIOS R43 or R48.1 BIOS R91 or R91.6 UFU P2.3.1 or P2.3.5 BIOS R43 or R48.1 BIOS R91.6 UFU P2.3.5 BIOS R48.1 ATTENTION: Customers using Intel® Workstation S5000XVN Should not use BIOS 94 but should remain on BIOS 91.6 until a replacement BIOS is available in December 2008. Intel will also review the BIOS evaluation process to determine how this type of issue can be found during validation.