Netra T2000 - IOBD/PCI-Bridge fail POST with PCIe link width warning despite firmware 6.3.x in place

Asset ID:	1-72-1942692.1
Update Date:	2017-04-06
Keywords:

Solution Type Problem Resolution Sure

Solution 1942692.1 : Netra T2000 - IOBD/PCI-Bridge fail POST with PCIe link width warning despite firmware 6.3.x in place

Applies to:

Sun Netra T2000 Server - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

POST fails with:

WARNING: PCIe link width not set to x4 on J2100 !!!

Netra T2000, No Keyboard
Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
OpenBoot 4.30.4.e, 16256 MB memory available, Serial #71059520.
Ethernet address 0:14:4f:3c:48:40, Host ID: 843c4840.

ERROR: The following devices are disabled:
IOBD/PCI-BRIDGE1

Components may appear as disabled on SC logs and prtdiag -v and showfaults -v may flag IOBD/MB as faulty:

============================ FRU Status ============================
Location Name Status
------------------------------------------------------
CH/FT0/F0 FAN enabled
CH/FT0/F1 FAN enabled
CH/FT0/F2 FAN enabled
CH/FT1/F0 FAN enabled
CH/FT1/F1 FAN enabled
CH/PS0/F0 FAN enabled
CH/PS0 PS enabled
CH/PS1/F0 FAN enabled
CH/PS1 PS enabled
CH SC enabled
CH IOBD disabled
CH    MB disabled
CH/MB/CMP0/CH0/R0/D0 DIMM enabled
CH/MB/CMP0/CH0/R0/D1 DIMM enabled
CH/MB/CMP0/CH0/R1/D0 DIMM enabled
CH/MB/CMP0/CH0/R1/D1 DIMM enabled
CH/MB/CMP0/CH1/R0/D0 DIMM enabled
CH/MB/CMP0/CH1/R0/D1 DIMM enabled
CH/MB/CMP0/CH1/R1/D0 DIMM enabled
CH/MB/CMP0/CH1/R1/D1 DIMM enabled
CH/MB/CMP0/CH2/R0/D0 DIMM enabled
CH/MB/CMP0/CH2/R0/D1 DIMM enabled
CH/MB/CMP0/CH2/R1/D0 DIMM enabled
CH/MB/CMP0/CH2/R1/D1 DIMM enabled
CH/MB/CMP0/CH3/R0/D0 DIMM enabled
CH/MB/CMP0/CH3/R0/D1 DIMM enabled
CH/MB/CMP0/CH3/R1/D0 DIMM enabled
CH/MB/CMP0/CH3/R1/D1 DIMM enabled
CH    PDB enabled
CH    ALARM enabled
CH    SASBP enabled
CH PCIMEZZ enabled

Cause

This is a known bug (15470208) caused by Pericom 4402 Re-drivers used on Pelton/Draco PCI tray.

Solution

The first step is to ensure that the firmware is at revision 6.3.11, 6.3.12, or 6.6.3 (or above) which resolves a known firmware bug.

If beyond this firmware version, then system board replacement is the solution.

The following steps are recommended to determine if a system board replacement is required:

1) Clean all faults from fma from Solaris and the SC, try to re-enable the components and reset the SC:

(e.g.)

sc> showfaults -v
Last POST run: THU OCT 16 18:23:02 2014
POST status: Failed devices: IOBD/PCI-BRIDGE1

ID Time FRU Fault
0 OCT 16 17:19:24 IOBD IOBD/PCI-BRIDGE1 deemed faulty and disabled
1 OCT 16 18:55:52 MB Host detected fault, MSGID: SUN4-8000-4P UUID: 3a8b4c62-a0e2-6272-aaaa-84bff3ce43bb

sc> clearfault 3a8b4c62-a0e2-6272-aaaa-84bff3ce43bb

sc> clearasrdb

- Run sc> showcomponent ... to see the disabled device

- Enable the component:
sc> enablecomponent IOBD/PCI-BRIDGE1

- sc> resetsc -y

2) If the faults persist after step 1 or if components get disabled again, a system board replacement may be required.

References

<BUG:15468691> - SUNBT6678885-4.29.X LINK WIDTH ISSUE WITH PLX VERSION BC CHIP ON PELTON
<BUG:15468688> - SUNBT6678885-4.26.X LINK WIDTH ISSUE WITH PLX VERSION BC CHIP ON PELTON
<BUG:15468690> - SUNBT6678885-4.28.X LINK WIDTH ISSUE WITH PLX VERSION BC CHIP ON PELTON
<BUG:15468689> - SUNBT6678885-4.27.X LINK WIDTH ISSUE WITH PLX VERSION BC CHIP ON PELTON
<BUG:15467082> - SUNBT6678885-4.25.X LINK WIDTH ISSUE WITH PLX VERSION BC CHIP ON PELTON

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