[U-Boot] [RFC PATCH] arm: bootm: Boot kernel with U-Boot's FDT blob

[Michal Simek]

On 10.1.2017 14:02, Alexander Graf wrote:
> On 01/10/2017 01:58 PM, Michal Simek wrote:
>> U-Boot configured via DTB can use the same DTB for booting the kernel.
>> When OF_CONTROL is used fdtcontroladdr is setup and can be use for boot.
>>
>> Signed-off-by: Michal Simek <michal.simek at xilinx.com>
>> ---
>>
>> Didn't check if there is any side effect or not but it looks weird when
>> you have DT driver u-boot that you have to load dtb again.
> 
> I agree, and I think it's very reasonable to try and use the same device
> tree for U-Boot and Linux.
> 
> I'm not sure it's a great idea to check for the builtin device tree
> after ATAGs though. Shouldn't we prefer the built-in one over ATAGs?

No problem to do it. The reason why I have done it in this way was not
to change behavior for existing platforms.

u-boot is also doing some automatic updates which can require fdt resize
but I didn't check if resize can be done in that space where build-in
dtb is.

Thanks,
Michal