From mboxrd@z Thu Jan  1 00:00:00 1970
From: Timur Tabi <timur@freescale.com>
Date: Tue, 23 Jan 2007 10:10:03 -0600
Subject: [U-Boot-Users] Does ft_dump_blob() work for anyone?
Message-ID: <45B6335B.9040201@freescale.com>
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To: u-boot@lists.denx.de

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.

-- 
Timur Tabi
Linux Kernel Developer @ Freescale