[U-Boot] [PATCH] fdt: Add warning about CONFIG_OF_EMBED

[Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>]

Hi Simon,

Am 05.12.2018 um 16:57 schrieb Simon Glass:
> Hi Simon,
> 
> On Wed, 5 Dec 2018 at 07:22, Simon Goldschmidt
> <simon.k.r.goldschmidt@gmail.com> wrote:
>>
>> Am 05.12.2018 um 14:57 schrieb Simon Glass:
>>> This option has crept into use with some boards. Add a warning to try to
>>> prevent this.
>>>
>>> As an example:
>>>      https://lists.denx.de/pipermail/u-boot/2017-September/304966.html
>>
>> We have just discussed this in another thread. There seem to be ~109
>> defconfigs in the tree that enable OF_EMBED.
>>
>> I doubt all of them do this for fun, so we might want to collect the
>> reasons they do so. I do know two:
>>
>> - socfpga_stratix10_defconfig needs this to get a correct u-boot-spl.hex
> 
> Let's fix that then.
> 
>> - I would need it to ensure in SPL, the DTB is in one block with the
>> other readonly parts. Without OF_EMBED, we have '.text', '.bss', DT.
> 
> Similarly, let's change that.
> 
> CONFIG_OF_EMBED should not be a work-around for missing features that we need.

I'm with you there. Don't get me wrong, I don't want to argue to use 
OF_EMBED, just wanted to list the use cases I know so that we only fix 
them once instead of letting everyone fixing them on their own.

Regards,
Simon