Am 13.04.2016 um 15:15 schrieb Alexander Graf:
On 04/13/2016 02:58 PM, Andreas Färber wrote:
Am 11.04.2016 um 16:55 schrieb Alexander Graf:
When the user did not pass any device tree or the boot script didn't find any, let's use the system device tree as last resort to get something the payload (Linux) may understand.
This means that on systems that use the same device tree for U-Boot and Linux we can just share it and there's no need to manually provide a device tree in the target image.
While at it, also copy and pad the device tree by 64kb to give us space for modifications.
Signed-off-by: Alexander Graf agraf@suse.de
Tested-by: Andreas Färber afaerber@suse.de
It definitely avoids a warning message. However, it does not always allow Linux to actually boot, e.g. on jetson-tk1 (patch sent).
We could give the user a warning in the fallback case as well, but ideally I'd like to move to a model where all device trees really are interchangable and work with every component. So then we would warn the user about the preferred default case. I'm not sure that's a great idea.
I'm not saying we need a warning here, just that this solution by itself is not sufficient and other fixes (like supplying $fdtfile) are still necessary today.
Regards, Andreas