[U-Boot] [PATCH v5 1/3] Add README for the "Falcon" mode

[Andreas Bießmann]

On 02/12/2013 01:52 PM, Stefan Roese wrote:
> On 12.02.2013 13:44, Andreas Bießmann wrote:
>>> 3. Use "fdt" commands to patch the DT blob:
>>> => fdt addr 1800000
>>> => fdt boardsetup
>>> => fdt chosen
>>>
>>> 4. Display patched DT blob (optional):
>>> => fdt print
>>>
>>> 5. Save fdt to NOR flash:
>>> => erase fc060000 fc07ffff
>>> => cp.b 1800000 fc060000 10000
>>> ...
>>>
>>> So all we need for DT based booting (compared to ATAG booting) is the
>>> "fdt" command.
>>
>> As I understand this guide there is no 'spl export' required for 'Falcon
>> Mode' with FDT, is that correct?
> 
> Correct. At least thats how it works on PowerPC. It should work that way
> on ARM as well. No need for any "spl export" commands here.

Well, Ok, this changes things a bit. The'spl export' command was
prepared for 'bootm with fdt' to gather the same information as in ATAGS
mode, honestly this was never tested cause Simon Schwarz worked with
ATAGS too. If this is not required to prepare the fdt blob it was a
misunderstanding from the very beginning of that command.
However the README should reflect that the 'spl export' with fdt is
untested and that ppc prepares the fdt blob with the fdt command instead.

Best regards

Andreas Bießmann