Gah. List foo. Sorry. -- jdl

-------- Forwarded Message -------- From: Jon Loeliger jdl@freescale.com To: Simon Pasch fpasch@googlemail.com Cc: u-boot-users u-boot-users@lists.sourceforge.net Subject: Re: [U-Boot-Users] FIT-image with fdt doesn't work Date: Tue, 30 Sep 2008 10:37:50 -0500 On Tue, 2008-09-30 at 14:06 +0200, Simon Pasch wrote:

3.) create a flat device tree blob (using dtc 1.2.0): dtc -b 0 -V 17 -R 4 -S 0x3000 -I dts -O dtb -f devicetree.dts > target.dtb

The -V 17 is the current default, so the option isn't needed. The -S 0x3000 may not be enough, and is really obsoleted but the -p <pad-value> option too. Try, oh, -p 0x1000 instead.

If you have a large DTS or resulting DTB file, it might lead to problems like this:

7.) try to boot it: => bootm ## Booting kernel from FIT Image at 00700000 ... Using 'conf@1' configuration Trying 'kernel@1' kernel subimage Description: Vanilla Linux kernel Type: Kernel Image Compression: gzip compressed Data Start: 0x007000ec Data Size: 4052683 Bytes = 3.9 MB Architecture: PowerPC OS: Linux Load Address: 0x00000000 Entry Point: 0x00000000 Hash algo: crc32 Hash value: d4c2683b Hash algo: sha1 Hash value: 0f3c591c4f201d8cc1020725da0639d0b04d065a Verifying Hash Integrity ... crc32+ sha1+ OK Uncompressing Kernel Image ... OK ## Flattened Device Tree from FIT Image at 00700000 Using 'conf@1' configuration Trying 'fdt@1' FDT blob subimage Description: Flattened Device Tree blob Type: Unknown Image Compression: Unknown Compression Data Start: 0x00add8e4 Data Size: 12288 Bytes = 12 kB Hash algo: crc32 Hash value: e07e11d2 Hash algo: sha1 Hash value: 8ee8e8ce07508c534666f6d79fe89e46b8a7ae7a Verifying Hash Integrity ... crc32+ sha1+ OK ERROR: Not a FDT image - must RESET the board to recover.

As you can see the image-type of the fdt changed from "Flat Device Tree" to "Unknown Image" after decompressing the kernel, but the hash integrity seems to be fine (?!)

What am I doing wrong? What's missing?

Do some length analysis and make sure you are not stomping on any images in memory too, especially after uncompressing.

jdl