Subject: Re: 2.6 kernel hangs after loading device tree

From: abhi_linux <[email-masked]>
Date: Mon, 19 Nov 2007 16:08:03 -0800 (PST)

Hello
Did u get a solution to this? I have similar issues. How do u enable
debugging in UBoot?
Thanks

charanya venkatraman wrote:
> 
> Hi all
>        Sorry about the previous mail.Got sent  by mistake.
> 
> Iam using the 2.6.22.5 kernel on MPC 8560 and MPC8540 on my custom
> board.Mykernel hangs after loading the device tree in both the
> processors .There is
> no output on the serial port after loading the device tree.Am using U-boot
> 1.2.0 as the bootloader.After enabling debug in u-boot i could see that
> the
> control is getting transferred to the kernel after which it hangs.Earlier
> i
> tried using 2.6.21 which also hangs at the same point.The config files
> used
> were MPC8540ADS_defconfig and MPC8560ADS_defconfig under powerpc
> directory.
> The changes that were made to the device tree are:
> 1.The reg and ranges properties of the soc node have been changed to
> account
> for the change in CCSRBAR of my board.
> 2.Removed the PCI,mdio nodes and ethernet nodes since i dont need support
> for these as of now.
> 
> I have tried the following console arguments:
> MPC8540: bootargs root=/dev/ram rw console=ttyS0,115200
> MPC8560:bootargs root=/dev/ram rw console=ttyCPM0,115200
> 
> Any help on this issue??
> 
> Thanks.
> Charanya.
> 
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> 

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