[ELDK] Kernel hangs after fdt unpacking

[Axel Beierlein]

On Thu, May 20, 2010 at 11:22:00AM +0200, Wolfgang Grandegger wrote:
> On 05/20/2010 11:01 AM, Axel Beierlein wrote:
> > Hello,
> > 
> > i try to port our TQM5200S Module OS from Kernel Version 2.4 to 2.6.
> > I choose the Kernel Version 2.6.32.3 from the Denx Repository cause this
> > was the last version wich i can patch with the lates Xenomai Stable
> > release (2.5.3).
> > Ok, patching and building Kernel was no Problem.
> > I use the latest U-Boot commit to build an actual Bootloader with
> > the configuration for an TQM5200B Board.
> > 
> > I use tqm5200.dts from /arch/powerpc/boot/dts to build an fdt blob with
> > the dtc compiler on my Ubuntu 9.10.
> > 
> > dtc -I dts -O dtb -o tqm5200.dtb tqm5200.dts
> 
> You need to reserve some spare space, e.g. by adding "-p 0x1000" or even
> better, use make to build tqm5200.dtb:
> 
>   $ cd linux-2.6-denx
>   $ make tqm5200.dtb
> 
> That's documented in
> http://www.denx.de/wiki/view/DULG/Manual?stickboard=tqm5200
> 

Ok, nice hint but doesn't fit the Problem

> > was the command to getting the fdt blob for the Board.
> > But when i try to boot the Kernel the System hangs after uncompressing
> > the fdt blob.
> > 
> > Where is the Problem? Where can i see why the Kernel doesn't boot?
> 
> Also, make sure that the right console bootargs are used:
> 
>   console=ttyPSC0,115200

bootargs=root=/dev/nfs rw nfsroot=192.168.0.133:/mnt/tqm5200
ip=192.168.0.50:192.168.0.133:::tqm5200:eth0:off panic=1
console=ttyPSC0,115200

that is not the Problem...

> 
> Most likely that's the primary problem.
> 
> > 
> > Also when i try to get some information about the device tree blob with
> > fdt header. The System hangs after the output.
> 
> What exactly did you do?
> 

=> tftp ${kernel_addr_r} ${bootfile}; tftp ${fdt_addr_r} ${fdt_file};
Using FEC ETHERNET device
TFTP from server 192.168.0.133; our IP address is 192.168.0.50
Filename 'uImage'.
Load address: 0x400000
Loading:
#################################################################
	 ################################################################
done
Bytes transferred = 1889268 (1cd3f4 hex)
Using FEC ETHERNET device
TFTP from server 192.168.0.133; our IP address is 192.168.0.50
Filename 'tqm5200.dtb'.
Load address: 0x600000
Loading: #
done
Bytes transferred = 5229 (146d hex)

after that..

=> fdt header
magic:			0x60000000
totalsize:		0x60000000 (1610612736)
off_dt_struct:		0x60000000
off_dt_strings:		0x2c050000
off_mem_rsvmap:		0x4182001c
version:		1117716485
last_comp_version:	2097676966
boot_cpuid_phys:	0x3d080000
size_dt_strings:	0x3908ffe8
size_dt_struct:		0x4837ef11

and here it hangs and i have to hard reboot
 
> Wolfgang.
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Axel