Re: [coreboot] Chromebooks overview

[David Hendricks]

Hi Tim,
Thanks so much for doing this!

I see you've already found a wealth of resources. I have a test rack with
every kind of Chromebook and can send additional pictures if needed.

A couple comments in-line.

On Mon, Jun 10, 2013 at 2:45 PM, Tim Zander  wrote:

> Hi, try to collect information about the chromebooks to write things up in
> the wiki.
>
> Which of the following things are true (for the lastest coreboot version):
>
> 0. all 5 Chromebooks are supported by coreboot (
> http://www.google.com/intl/**en/chrome/devices/chromebooks.**html)
> Ok 5 names show in the   config menu, so are there maybe unsupported older
> version of the chromebooks (ones with other working names then
>
>   1. Butterfly (BOARD_GOOGLE_BUTTERFLY) (NEW)
>   2. Link (BOARD_GOOGLE_LINK) (NEW)
>   3. Parrot (BOARD_GOOGLE_PARROT) (NEW)
>   4. Snow (BOARD_GOOGLE_SNOW) (NEW)
>   5. Stout (BOARD_GOOGLE_STOUT) (NEW)!
>
>
> 1. all chromebooks need to be flashed by an external programmer to get
> your own coreboot version (and payload) running (but it is doable without
> breaking things)
>

While it is recommended that the user have an external programmer in case
something goes wrong, it is possible to run flashrom from within the OS.
The chromium.org branch of flashrom
(here)
will detect and skip over the management engine region on Intel platforms
and comes installed on all Chromebooks.

Is there information about where the spi chips can be found?
>

Hmmm, I don't know off-hand :-/ If not, we can augment existing pics on the
site you found or get some new ones.


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David Hendricks (dhendrix)
Systems Software Engineer, Google Inc.
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Re: [coreboot] Chromebooks overview

[Stefan Reinauer]

* Tim Zander  [130611 02:50]:
> 
> Hardware Preparation
> 
> Open the case
> You'll now have to disassemble your device (which most
> likely voids your warranty).
> Disable write protect
> You'll have to locate the Write Protect jumper and enable it.
> This will make the BIOS read-write so you can update it.
> Once things have been updated, you can undo this so your
> BIOS is read-only again.
> Reassemble the device
> Now that you've done toggled the jumper, you need to
> reassemble the device and power it up.
> Check the write protect
> Run crossystem and look at the wpsw_cur field; it should be 0.
> Plug your system in to be safe!
> For the Chromebook laptop, make sure the battery is charged,
> and the power supply is connected.
> For the Chromebox, try and plug it into a battery backup
> (UPS), and don't try this during a storm :).
> 
> 
> see
> http://www.chromium.org/chromium-os/developer-information-for-chrome-os-devices/samsung-sandy-bridge
> 
> for location of jumper
 

Stumpy / Lumpy had a jumper. On the Pixel it's a screw next to the USB
port.



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Re: [coreboot] Chromebooks overview

[Stefan Reinauer]

* Tim Zander  [130611 00:49]:

These 3 used Insyde H2C. They were all Atom based.

> December 2010  Google  Cr-48   Mario
> support unknown/no
> 
>  June 2011 Samsung Series 5 Chromebook Alex
> support unknown/no
> 
>  July 2011 AcerAC700 ChromebookZGB
> support unknown/no
 
These were the first ChromeOS systems tp be shipped with coreboot:

>  May 2012  Samsung Series 3 Chromebox  Stumpy
> support yes: choose mainboard vendor samsung
> 
> 
>  May 2012  Samsung Series 5 550 Chromebook Lumpy
> support yes: choose mainboard vendor samsung
> 
> 

A coreboot port is available, but the system has shipped with u-boot:
>  October 2012  Samsung ARM Chromebook  Snow (aka Daisy)

These all shipped with coreboot:
>  November 2012 AcerC7 Chromebook   Parrot
>  January 2013  Lenovo  Thinkpad X131e Chromebook   Stout
>  February 2013 HP  Pavilion 14 Chromebook  Butterfly
>  February 2013 Google  Chromebook PixelLink   
> support of all 5 yes: choose mainboard vendor google  
>   
> if you have information about the support of the other (guess no
> support) please contribute..
> 
> 
> ok and they have nice pictures of the mainboards (link above)
> 
> now we need to identify the spi chips on the board and will write up
> the wiki but I will try doing that tomorrow...
> 
> -- 
> coreboot mailing list: coreboot@coreboot.org
> http://www.coreboot.org/mailman/listinfo/coreboot
> 

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Re: [coreboot] Chromebooks overview

[Stefan Reinauer]

* tim zander  [130611 16:02]:
> 
> >Could we convince you to organize it on a coreboot.org/Chromebook
> >wiki page?
> >
> >
> >
> Sure, if you give me an  account...
 
Done.
 

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Re: [coreboot] Chromebooks overview

[Tim Zander]

ok found more information:


http://www.chromium.org/chromium-os/developer-information-for-chrome-os-devices 




December 2010Google  Cr-48   Mario
support unknown/no

 June 2011   Samsung Series 5 Chromebook Alex
support unknown/no

 July 2011   AcerAC700 ChromebookZGB
support unknown/no

 May 2012Samsung Series 3 Chromebox  Stumpy
support yes: choose mainboard vendor samsung


 May 2012Samsung Series 5 550 Chromebook Lumpy
support yes: choose mainboard vendor samsung



 October 2012Samsung ARM Chromebook  Snow (aka Daisy)
 November 2012   AcerC7 Chromebook   Parrot
 January 2013Lenovo  Thinkpad X131e Chromebook   Stout
 February 2013   HP  Pavilion 14 Chromebook  Butterfly
 February 2013   Google  Chromebook PixelLink   
support of all 5 yes: choose mainboard vendor google

if you have information about the support of the other (guess no 
support) please contribute..



ok and they have nice pictures of the mainboards (link above)

now we need to identify the spi chips on the board and will write up the 
wiki but I will try doing that tomorrow...


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Re: [coreboot] Chromebooks overview

[ron minnich]

This is helpful, thanks.

ron

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