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- Sun Proprietary/Confidential: Internal Use Only -
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                            FIELD INFORMATION NOTICE
                  (For Authorized Distribution by SunService)

FIN #: I0695-1

Create Date: Jul/20/01

Keywords: 

Netra X1/T1 shipped with diag switch set to true on respective OBP versions

SunAlert: No

Top FIN/FCO Report: No

Products Reference: Netra X1 & Netra T1 AC200/DC200 Server

Product Category: Server / Service

Product Affected: 

Mkt_ID           Platform   Model   Description           Serial Number
------           --------   -----   -----------           -------------
Systems Affected
----------------

  -                N19       ALL    Netra X1 Server             -
  -                N21       ALL    Netra T1 DC200              -

X-Options Affected
------------------
  -                 -         -           -                     -

Parts Affected: 

Part Number       Description                   Model
-----------       -----------                   -----

600-7084-02       400MHz 128MB 20GB AC FJL        -
600-7085-02       400MHz 512MB 20GB AC FJL        -
600-7097-02       400MHz 1GB  2*20GB AC FJL       -
F600-7084-02      400MHz 128MB 20GB               -
F600-7085-02      400MHz 512MB 20GB               -
F600-7097-02      400MHz 1GB 2*20GB               -
600-6900-04	  500MHz 256MB 18GB AC FJ2        -	
600-6899-04	  500MHz 512MB 18GB AC FJ2        -	
600-6898-04	  500MHz 1GB 2*20GB AC FJ2        -		
600-6980-01	  500MHz 256MB 18GB DC FJ2        -

References: 

BugId:  4414628

Issue Description: 

This FIN explains why the Netra X1 and Netra T1 AC200/DC200 server
has been shipped with the diag switch within the OBP set to true.  It
would normally be set to false at the time of shipment.  The bugId
associated with this is 4414628.  The issue has been changed for the
next release of OBP V4.0.9 and the next hard disk image currently
released to Operations for next product build.   
  
The impact of the diag switch being set to true will only affect the
boot time to unix of the system on initial power up.  Normally the boot
time of a Netra X1 would be around 1.5 mins with diag switch set to
false. With diag switch set to true, it would run at around 3 minutes.

If the diag switch was set to the normal setting of false a "Data
Exception Error" was observed booting at the PROM level. This occurred
on 1 in 10 units.  going through power on. It is not seen with diag
switch set to true.  
 
here are two problem symptoms in this area:

  1. The retained memory is controlled by a structure which is at a fixed
     address relative to the top of the top memory bank.  CORE thinks that
     this address is (top - 2M - 8K), but OBP puts the structure at (top -
     16M - 8K) (this was changed from (top - 4M - 8K) not long ago).  So 
     the memory containing the retained structure never gets cleared or 
     ECC scrubbed by CORE. 

  2. the routine 'init-retained' relies on knowing whether the last reset
     was a soft reset or a hard/power-on reset.  If it was a soft reset, 
     it looks for a valid retained structure, and if it finds one, it claims
     all of the physical memory therein described: it expects this memory 
     to be ECC scrubbed (not cleared - that would destroy the point of the
     feature).  If there was a hard reset, then it clears and initializes
     the 8K structure (with protection against ECC errors).

NOTE: Symptom 1 applies to both the Netra T1 AC200/DC200 and Netra X1 servers.
      While symptom 2 applies to only Netra X1 servers. 

However, the routine which decides whether there was a soft reset or a
hard reset/power-on always returns that there was a soft reset.  This
is because CORE/cPOST do not set the OBP post-ret# values to anything
sensible (they get random values).
  
The outcome is that init-retained can assume memory is ECC scrubbed
when it isn't, and this causes the hangs/errors.

The corrective actions are INTERNAL. These are actions the FW
programmer has taken to restore the diag switch setting in OBP to its
default shipping value of "false" in the respective product OBP's

	For X1		OBP V 4.0.9
	For T1          OBP V 4.0.4

Implementation: 

---
        |   |   MANDATORY (Fully Pro-Active)
         ---    
         
  
         ---
        |   |   CONTROLLED PRO-ACTIVE (per Sun Geo Plan) 
         --- 
         
                                
         ---
        | X |   REACTIVE (As Required)
         ---

Corrective Action: 

An Authorized Enterprise Field Service Representative may avoid the
above mentioned problems by following the recommendations as shown
below.

"None required, leave diag switch set to "true" for X1 OBP V 4.0.6 or    
less. For T1 V 4.0.3 or less. Diag switch set to normal default "false"
in future OBP releases.

	 For Netra X1	       OBP V 4.0.9 and higher
	 For Netra T1          OBP V 4.0.4 and higher

Comments: 

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Implementation Footnote: 

i)   In case of MANDATORY FINs, Enterprise Services will attempt to    
     contact all affected customers to recommend implementation of 
     the FIN. 
   
ii)  For CONTROLLED PROACTIVE FINs, Enterprise Services mission critical    
     support teams will recommend implementation of the FIN  (to their  
     respective accounts), at the convenience of the customer. 

iii) For REACTIVE FINs, Enterprise Services will implement the FIN as the   
     need arises.
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