How to add metadata to device-trees

Dear all,

in the DTE meetings we have been discussing how we should add signatures to device-trees.

Due to the way how libfdt adds properties the sanest place to add metadata is before the memory reservation block. I have tested this with the U-Boot->GRUB->Linux boot sequence.

See my slides at

https://github.com/xypron/dte/blob/master/DTE%20-%20Adding%20Metadata.pdf

and the test program I used

https://github.com/xypron/dte/blob/master/src/add_metadata_area.c

In the next DTE meetings we could discuss drafting a specification change for this.

Best regards

Heinrich