[U-Boot] [PATCH 6/6] fdt: Add a Linux tool for reading values from FDT files

Joe Hershberger joe.hershberger at gmail.com
Tue Aug 21 02:51:32 CEST 2012


Hi Mike,

On Mon, Aug 20, 2012 at 7:24 PM, Mike Frysinger <vapier at gentoo.org> wrote:
> On Monday 20 August 2012 19:40:45 Joe Hershberger wrote:
>> On Fri, Aug 17, 2012 at 6:35 PM, Mike Frysinger wrote:
>> > On Friday 17 August 2012 16:34:40 Joe Hershberger wrote:
>> >> Designed to be able to access itb files on a filesystem or an mtd
>> >> partition.
>> >>
>> >> Supports print and list (like the fdt command) and also offset for
>> >> finding the offset and size of a given property in an FDT file.
>> >>
>> >> This is especially helpful when reading properties from an ITB file.
>> >
>> > doesn't the ftdump utility from the dtc package cover your needs ?
>>
>> No.  The purpose is to use this utility e.g. in a Linux shell script
>> to retrieve a property from the ITB.  The two places I use it are to
>> retrieve a version number from the ITB and to identify the offset and
>> size of a data block (image) in the ITB.
>>
>> From what I can see the ftdump utility in the dtc component just dumps
>> the ITB as a single blob with no options.  I'm looking at the dtc
>> 1.2.0 source.
>
> ... so wouldn't the logical thing be to extend ftdump to support your needs
> and send a patch to the DTC authors rather than to write an entire tool from
> scratch and commit it to a tree that is merely a user of device trees ?

Yes it probably would have been, if I had noticed that the ftdump
utility existed, then that is the approach I would have taken.  I
think it is of specific use to u-boot users, but if you think it's
better to extend ftdump, I guess I could take that approach.

-Joe


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