[U-Boot-Users] DTB /OF_TREE Newbie and U-boot

[Jerry Van Baren <gerald.vanbaren@smiths-aerospace.com>]

Timur Tabi wrote:
> Russell McGuire wrote:

[snip]

>> 3)       Is this built into the bd_info structure?
> 
> I'm not sure I understand.  The DTB itself is not part of U-Boot, but U-Boot can 
> parse the tree and modify it.

The dtb obsoletes the bd_info structure (but that is directly or 
indirectly the source of some of the added information that bootm puts 
into the dtb).  Instead of passing a pointer to a C struct that is 
defined both in u-boot and the kernel (which must be identical or 
literally nothing happens), the dtb is structured as a searchable 
key/value data structure that is well defined.  If the necessary 
key/value is in there, it will be found an used.  If not, that will be 
reported if possible (some errors, e.g. bad console port definitions, 
are obviously not recoverable).

HTH,
gvb