nandblaster: can't open fs.plc for reading

[Emiliano Pastorino]

It worked. I'll continue with my tests.

Thanks again, Erik!

On Wed, Dec 17, 2008 at 2:50 PM, Emiliano Pastorino <
epastorino at plan.ceibal.edu.uy> wrote:

> Thanks, Erik!
> I'll try it right now
>
>
> On Wed, Dec 17, 2008 at 2:46 PM, Erik Garrison <erik at laptop.org> wrote:
>
>> Hi Emiliano!
>>
>> On Wed, Dec 17, 2008 at 02:22:37PM -0200, Emiliano Pastorino wrote:
>> > Hi everyone!
>> >
>> > We're doing some tests with firmware q2e24 but we're having trouble when
>> > trying to serve an unsigned build.
>> > As it says at http://wiki.laptop.org/go/Multicast_NAND_FLASH_Update ,
>> we
>> > need an fs.plc file, but we don't know
>> > how to generate it.
>> >
>>
>> Judging by the description on the afformentioned page, the fs.plc file
>> has the format described at
>> http://wiki.laptop.org/go/OFW_NAND_FLASH_Updater
>>
>> It is basically a script used by OFW during the update process to build
>> any partitions on the NAND and to validate the eblocks.  The bulk of the
>> script is a bunch of sha256 digests for each 128KiB piece (erase-block,
>> or eblock) of the image you're flashing.  You can see such scripts by
>> unzipping an fs.zip from one of our signed builds and examining the file
>> data.img.
>>
>> > Any tips?
>>
>> Ironically I just built a simple script to generate such files because
>> it will help us in getting your custom images ready for secure reflash.
>> Instructions regarding that process will be forthcoming this afternoon.
>> In the meantime I suspect you can resolve the NANDBlaster issue by using
>> the script.
>>
>> You can obtain the script from:
>>
>>  git-clone git://dev.laptop.org/users/erik/image-digestor
>>
>> Run it as follows against the image file you are trying to NANDBlast:
>>
>>  image-digestor.sh <image_file_name>
>>
>> After a minute or so it will produce a file called
>> <image_file_name>.ofw_update_script.  Rename this file fs.plc, put it on
>> the USB alongside fs.img, and start the NANDBlaster again by following
>> the instructions on the Multicast NAND Updater page.
>>
>> Hopefully that resolves the issue.  Please indicate if you encounter
>> more problems.
>>
>> Best,
>> Erik
>>
>
>
>
> --
> Emiliano Pastorino
> LATU - Plan Ceibal
> Av. Italia 6201 CP: 11500, Montevideo, Uruguay
> Tel: (598 2) 601 3724 int.: 469
>



-- 
Emiliano Pastorino
LATU - Plan Ceibal
Av. Italia 6201 CP: 11500, Montevideo, Uruguay
Tel: (598 2) 601 3724 int.: 469
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