Cmdline FDT query tool

John Williams john.williams at petalogix.com
Thu May 27 11:40:51 EST 2010


On Sat, May 22, 2010 at 10:17 AM, David Gibson
<david at gibson.dropbear.id.au> wrote:
> On Tue, May 18, 2010 at 12:20:05PM -0600, Grant Likely wrote:
>> On Mon, May 17, 2010 at 8:03 PM, John Williams
>> <john.williams at petalogix.com> wrote:
>> > Hi Grant,
>> >
>> > At ELC I mentioned a tool I'd written that basically hacked u-boot's
>> > "fdt" command into a commandline util for querying DTBs.  You can do
>> > stuff like this:
>> >
>> > $ fdt-tool system.dtp print
>> >
>> > <dump entire DTB in text format>
>> >
>> > $ fdt-tool system.dtb list /cpus/cpu at 0 xlnx,use-dcache
>> > xlnx,use-dcache = <0x1>
>> >
>> > and so on.
>>
>> Cool.  Thanks John.
>>
>> I agree with David.  It would probably be useful to include in the
>> libfdt (which U-Boot fdt support makes use of too) source repo.  Seems
>> like a useful tool.
>
> Of course, to incorporate it with libfdt, it would need to be BSD
> dual-licensed, like the rest of libfdt, and we'd need sign-offs from
> all authors to that effect.

I have no problem with that, but since I ripped the guts of it
directly from u-boot there'll be a conversation to be had there.

John


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