Re: serial numbers on new motherboards

2011-10-17 Thread Martin Langhoff
Hi Sridhar!

I didn't know you were getting bare motherboards. Reuben should have
some scripts and recommendations as to how to handle the situation.

You'll want to have the right mfg data -- serial number, UUID, KL, KA,
KV, LO -- for things to work correctly. Otherwise quite a few things
will be not-quite-right in fun and surprising ways.

cheers,



m

On Mon, Oct 17, 2011 at 1:47 AM, Sridhar Dhanapalan
srid...@laptop.org.au wrote:
 I'm wondering what is the recommended process for changing an XO
 motherboard. The hardware side is relatively straightforward. However,
 new motherboards come with blank serial numbers.

 What is the impact of leaving the SN# in the mfg-data blank? My
 understanding is that parts of the XO OS first-boot setup and
 interactions with an XS are derived from the serial number.

 We have devised a method (using an olpc.fth script) to write the
 serial number of the XO chassis to the mfg-data on the board. What is
 the method used in other deployments?

 Thanks,
 Sridhar



 Sridhar Dhanapalan
 Engineering Manager
 One Laptop per Child Australia
 M: +61 425 239 701
 E: srid...@laptop.org.au
 A: G.P.O. Box 731
      Sydney, NSW 2001
 W: www.laptop.org.au
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serial numbers on new motherboards

2011-10-16 Thread Sridhar Dhanapalan
I'm wondering what is the recommended process for changing an XO
motherboard. The hardware side is relatively straightforward. However,
new motherboards come with blank serial numbers.

What is the impact of leaving the SN# in the mfg-data blank? My
understanding is that parts of the XO OS first-boot setup and
interactions with an XS are derived from the serial number.

We have devised a method (using an olpc.fth script) to write the
serial number of the XO chassis to the mfg-data on the board. What is
the method used in other deployments?

Thanks,
Sridhar



Sridhar Dhanapalan
Engineering Manager
One Laptop per Child Australia
M: +61 425 239 701
E: srid...@laptop.org.au
A: G.P.O. Box 731
     Sydney, NSW 2001
W: www.laptop.org.au
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Re: serial numbers on new motherboards

2011-10-16 Thread John Watlington

On Oct 17, 2011, at 1:47 AM, Sridhar Dhanapalan wrote:

 I'm wondering what is the recommended process for changing an XO
 motherboard. The hardware side is relatively straightforward. However,
 new motherboards come with blank serial numbers.
 
 What is the impact of leaving the SN# in the mfg-data blank? My
 understanding is that parts of the XO OS first-boot setup and
 interactions with an XS are derived from the serial number.

I can't recommend leaving it blank.  It is a required field in the
manufacturing data, which is expected to be present and to be
unique among XOs.

 We have devised a method (using an olpc.fth script) to write the
 serial number of the XO chassis to the mfg-data on the board. What is
 the method used in other deployments?

Good.  That should work well.  How are you generating/setting the UUID,
the secret part of the device authentication ?

I too am interested in hearing how other deployments such as Uruguay
deal with this problem.

Cheers,
wad


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