"No valid device tree blob found" error

[Luiz Otavio O Souza]

On 16 February 2014 18:31, Glen Barber wrote:
> On Sun, Feb 16, 2014 at 04:30:01PM -0500, Glen Barber wrote:
>> Images for RPI-B and BEAGLEBONE (and I suspect PANDABOARD) are failing
>> to boot this week.
>>
>> The images are built against r261948.  Console messages during boot:
>>
>>   ## Starting application at 0x88000054 ...
>>   Consoles: U-Boot console
>>   Compatible API signature found @9f242240
>>   MMC Device 2 not found
>>   MMC Device 3 not found
>>   Number of U-Boot devices: 2
>>
>>   FreeBSD/armv6 U-Boot loader, Revision 1.2
>>   (root at grind.freebsd.org, Sun Feb 16 18:10:43 UTC 2014)
>>   DRAM:    512MB
>>
>>   Device: disk
>>   Loading /boot/defaults/loader.conf
>>   /boot/kernel/kernel data=0x460bc8+0x2c7438
>>   syms=[0x4+0x85a60+0x4+0x50c89]
>>
>>   Hit [Enter] to boot immediately, or any other key for command prompt.
>>   Booting [/boot/kernel/kernel]...
>>   Using DTB provided by U-Boot.
>>   No valid device tree blob found!WARNING! Trying to fire up the kernel,
>>   but no device tree blob found!
>>
>> Any ideas if this is error on my part, or a problem in head/ ?  The
>> stable/10/ images boot fine, so I do not suspect any code changes in the
>> build process.
>>
>
> Correction:  RPI-B fails to boot.  BEAGLEBONE boots after pressing 'q'
> when this message is displayed.
>
> Glen
>


Yeah, i had noted this difference already (and forgot to ask about it...).

It works on BEAGLEBONE because the BEAGLEBONE kernel still has the
FDT_DTB_STATIC option.

I have booted mine without the static dtb blob included in kernel
without any issue (using crochet images - other images which doesn't
use ubldr may be broken by this change).

If you guys think it is appropriate i can ask to commit the attached patch.

Luiz
-------------- next part --------------
Index: sys/arm/conf/BEAGLEBONE
===================================================================
--- sys/arm/conf/BEAGLEBONE	(revision 262037)
+++ sys/arm/conf/BEAGLEBONE	(working copy)
@@ -132,5 +132,7 @@
 
 # Flattened Device Tree
 options         FDT
-options         FDT_DTB_STATIC
+# Note:  DTB is normally loaded by beaglebone U-Boot and then handed
+# to kernel via ubldr.
+#options         FDT_DTB_STATIC
 makeoptions     FDT_DTS_FILE=beaglebone.dts