Compile new kernel for 5200B w/ ELDK

Laxmikant Rashinkar lk.atwork at yahoo.com
Wed Sep 3 08:36:17 EST 2008


I had the same problem as you.

For what its worth, here is what I added to the end of my .dts file to get my console working for a MPC8347 embedded systems

chosen {
        linux,stdout-path = &serial0;
};

Also, since I use uboot and not OF, I load the cuImage file instead of the uImage file


thanks
LK


----- Original Message ----
From: Albrecht Dreß <albrecht.dress at arcor.de>
To: linuxppc-embedded at ozlabs.org
Sent: Tuesday, September 2, 2008 10:18:15 AM
Subject: Re: Compile new kernel for 5200B w/ ELDK

Hi Detlev:

Am 01.09.08 16:42 schrieb(en) Detlev Zundel:
> Use a recent kernel version.  2.6.26 should work out of the box  
> without too much hassle.  Some of the older versions had problems  
> effectively stalling Linux very early without any output on the  
> console.

Thanks a lot for your hint, but unfortunately it doesn't solve my  
problem:
- downloaded 2.6.26.3 from kernel.org;
- called "make ARCH=powerpc CROSS_COMPILE=ppc_6xx-  
52xx/lite5200b_defconfig";
- called "make ARCH=powerpc CROSS_COMPILE=ppc_6xx- uImage".

However, even with "console=ttyPSC0,115200 verbose panic=1" in the  
bootargs, the kernel simply doesn't say /anything/ after decompression:

<snip>
=> bootm
## Booting kernel from Legacy Image at 01000000 ...
    Image Name:   Linux-2.6.26.3
    Created:      2008-09-02   9:11:12 UTC
    Image Type:   PowerPC Linux Kernel Image (gzip compressed)
    Data Size:    1341904 Bytes =  1.3 MB
    Load Address: 00000000
    Entry Point:  00000000
    Verifying Checksum ... OK
    Uncompressing Kernel Image ... OK
</snip>

Do I understand the remark in  
Documentation/powerpc/booting-without-of.txt, section "The /chosen  
node", correctly that it is *not* necessary to add it to the dts file  
as u-boot 1.3.4 should fill it in automatically?  Anyway, adding this  
section doesn't change anything...

HELP!  I'm really lost here...

Thanks, Albrecht.



      
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