[ELDK] Kernel hangs after fdt unpacking

[Axel Beierlein]

On Thu, May 20, 2010 at 01:16:00PM +0200, Wolfgang Grandegger wrote:
> On 05/20/2010 12:55 PM, Axel Beierlein wrote:
> > 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...
> 
> Is this kernel already with built-in Xenomai support? If yes, please try
> without first.

Xenomai was not really the Problem. It was the tqm5200s_defconfig file.
When i use tqm5200_defconfig the kernel is working. Also with xenomai.
xeno-test is runnning too. 

Thanks for your help!
> 
> >>
> >> 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
> 
> => fdt addr 600000
> => fdt header
> 
> should work.
> 
> Wolfgang.
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Axel