[U-Boot-Users] fdt in u-boot

[U-Boot-Users] fdt in u-boot

[Jerry Van Baren]

Kumar Gala wrote:
> Jerry,
> 
> I was wondering if you wouldn't mind summarizing the state of the 
> fdt/libfdt work.  I haven't been following what's been going on here in 
> u-boot.
> 
> thanks
> 
> - k

Hi Kumar,

I try to keep the wiki page up to date, I've updated it in response to 
your query:
   <http://www.denx.de/wiki/UBoot/UBootFdtInfo>
(it is linked off the Custodian page:)
   <http://www.denx.de/wiki/UBoot/Custodians>

LIBFDT is in good shape in general, quite usable (send patches if I 
lie...).  The #1 outstanding task as I see it is to convert the board-, 
CPU-, and PCI-specific ft_*() fdt initialization/update routines over to 
to use libfdt.  Patches for these improvements would go to the 
appropriate 8Yxx maintainer's repositories {Kim|Andy|Jon}.

Outstanding Patches:
--------------------
    * Andy Fleming's patch WRT making sure the blob is in the lower 
portion (16GB at the moment) of memory.  Discussion has been resolved, 
it will be applied and a pull request will go out tonight (Wolfgang's 
tomorrow ;-).

    * Unpublished patch of JerryVanBaren, implementing a suggestion by 
Scott Wood to make the /chosen handling finer grained: if the /chosen 
node exists, currently u-boot-fdt bails out. A better methodology is to 
not overwrite pre-existing properties on a per-property basis, so if 
/chosen exists but a necessary /chosen/property doesn't, it gets 
created. Good idea, but not published and poorly tested at the moment.

CPU sub-architectures:
----------------------
See the table(and update or send me updates):
   <http://www.denx.de/wiki/UBoot/UBootFdtInfo#AdoptionTable>

83xx: mpc8360emds is converted (my eval board).  Kim has done work on 
834x board(s) but I'm not sure which ones have been converted off-hand.

86xx: Jon has said he has a note on his whiteboard to convert the 86xx 
over to using LIBFDT.

85xx: Unknown.  Andy is the maintainer and has submitted patch(es) so 
there obviously is some activity there.

Best regards,
gvb

[U-Boot-Users] fdt in u-boot

[Jon Loeliger]

On Tue, 2007-08-14 at 07:34, Jerry Van Baren wrote:

> CPU sub-architectures:
> ----------------------
> See the table(and update or send me updates):
>    <http://www.denx.de/wiki/UBoot/UBootFdtInfo#AdoptionTable>
> 
> 83xx: mpc8360emds is converted (my eval board).  Kim has done work on 
> 834x board(s) but I'm not sure which ones have been converted off-hand.
> 
> 86xx: Jon has said he has a note on his whiteboard to convert the 86xx 
> over to using LIBFDT.
> 
> 85xx: Unknown.  Andy is the maintainer and has submitted patch(es) so 
> there obviously is some activity there.

My whiteboard note is broader than that.  It actually states
the ambitious goal of converting all FSL boards over to libfdt.
For some value of "all", likely "all current" or "83xx/85xx/86xx"
and maybe even "74xx/82xx/8xx" as needed.  We'll see.

jdl