[U-Boot] [PATCH v3 6/8] fdt: cmd_fdt: Call fdt_chosen() from "fdt boardsetup"

Stefan Roese sr at denx.de
Tue Oct 2 12:26:05 CEST 2012


On 09/27/2012 10:43 PM, McClintock Matthew-B29882 wrote:
>>>>> By calling fdt_chosen(), the chosen node will be updated /
>>>>> created by the "fdt boardsetup" command. This is useful for
>>>>> setting of the kernel commandline via the "bootargs"
>>>>> env variable.
>>>>>
>>>>> With this change, the "fdt boardsetup" can be used to prepare
>>>>> the DT blob for SPL booting. The patched DT blob can be saved
>>>>> to flash and can be used by the SPL U-Boot version directly
>>>>> for Linux booting.
>>>>>
>>>>> Signed-off-by: Stefan Roese <sr at denx.de>
>>>>> ---
>>>>>
>>>>> common/cmd_fdt.c | 4 +++-
>>>>> 1 file changed, 3 insertions(+), 1 deletion(-)
>>>>
>>>> There are possibly some workflows this breaks.  I can't remember
>>>> if for AMP boot we need to do something between ft_board_setup()
>>>> and fdt_chosen()
>>>
>>> Could you please elaborate what exactly you fear here? Is this a NACK
>>> for this patch?
>>
>> Possibly.  I've got to find our docs on how we do 2-core AMP booting sequence w/regards to device tree.
> 
> See if this works:
> 
> http://www.freescale.com/infocenter/index.jsp?topic=%2FQORIQSDK%2F2151493.html

Kumar, did you find the time to check/test this? I would really like to
know if this patch is okay with you.

Thanks,
Stefan



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