[U-Boot-Users] Does ft_dump_blob() work for anyone?

[Jerry Van Baren]

Timur Tabi wrote:
> I'm trying to debug some problems with ft_setup(), and when I call 
> ft_dump_blob(), I get output like this:
> 
> recieved oftree
> / {
>      model = [00 00 00 00 4d 50 43 38 33 34 39 45 4d];
>       ** Unknown tag 0x00000000 at 0xfd9d05c
> final OF-tree
> /memreserve/ 1 0;
> / {
>      model = [00 00 00 00 4d 50 43 38 33 34 39 45 4d];
>       ** Unknown tag 0x00000000 at 0xfd9d06c
> /memreserve/ 1 0;
> / {
>      model = [00 00 00 00 4d 50 43 38 33 34 39 45 4d];
>       ** Unknown tag 0x00000000 at 0xfd9d06c
> 
> Obviously, it's hard to debug OF code without this function working.  I believe 
> the bug is somewhere in this code:
> 
> 		sz = be32_to_cpu(*p++);
> 		s = (const char *)p_strings + be32_to_cpu(*p++);
> 		t = (const char *)p;
> 		p = (const u32 *)_ALIGN((unsigned long)p + sz, 4);
> 
> 
> Notice, for instance, the 'model' node, how it displays 4 zeros first. 
> Obviously, the value of 't' above is incorrect.
> 
> Unfortunately, I don't know the binary layout of the DTB, so this will take me a 
> while to debug.  I was just wondering if anyone else is seeing these problems.

It worked for me 2006-10-31
   <http://comments.gmane.org/gmane.comp.boot-loaders.u-boot/24664>
I have not been using it lately, so I cannot vouch for it still working. 
  You may also want to double-check your dtb version, I was using 
version 16 when it worked.

gvb