Re: [Ltib] NBOOT command and kernel boot

[Stuart Hughes]

Hi Tom,

I can't see anything obviously wrong.  I guess you've made sure that
your MTD drivers are compiled into the kernel rather than loadable
modules?  Maybe the tty setting is wrong? have you tried to ping the
board after allowing time for it to boot (e.g. maybe it's not really
dead?)

Can you send a copy of your kernel config file. If you're using LTIB,
it'll be in config/platform/<target>/xxxxx.config.dev.  You should be
able to see the name of the config file from looking ./ltib -m config.
I'd like to see if I can spot anything in the changes you've made that
may prevent it booting.

Regards, Stuart

On Tue, 2007-07-31 at 13:28 -0500, Tom Moulton wrote:
> I am trying to boot from a flash disk (NAND flash on mpc8313)
> 
>  
> 
> I am using the MTD commands (mtdparts etc) and am able to come up in
> u-boot, load & start the kernel but it never starts running
> 
>  
> 
> => echo $bootargs
> 
> root=/dev/mtdblock6 rw rootfstype=jffs2
> mtdparts=nand0:1m(u-boot),2M(kernel),-(jffs2)
> 
> => setenv autostart yes
> 
> => nboot kernel
> 
>  
> 
> Loading from NAND 32MiB 3,3V 8-bit, offset 0x100000
> 
>    Image Name:   Linux-2.6.20
> 
>    Created:      2007-07-31 13:41:49 UTC
> 
>    Image Type:   PowerPC Linux Kernel Image (gzip compressed)
> 
>    Data Size:    1836829 Bytes =  1.8 MB
> 
>    Load Address: 00000000
> 
>    Entry Point:  00000000
> 
> Automatic boot of image at addr 0x02000000 ...
> 
> ## Booting image at 02000000 ...
> 
>    Image Name:   Linux-2.6.20
> 
>    Created:      2007-07-31 13:41:49 UTC
> 
>    Image Type:   PowerPC Linux Kernel Image (gzip compressed)
> 
>    Data Size:    1836829 Bytes =  1.8 MB
> 
>    Load Address: 00000000
> 
>    Entry Point:  00000000
> 
>    Verifying Checksum ... OK
> 
>    Uncompressing Kernel Image ... OK
> 
>  
> 
>  
> 
> I get the same thing if I use bootm
> 
>  
> 
> => run mtd_args
> 
> => echo $bootargs
> 
> root=/dev/mtdblock6 rw rootfstype=jffs2
> mtdparts=nand0:1m(u-boot),2M(kernel),-(jffs2)
> 
> => nand read 1000000 kernel
> 
>  
> 
> NAND read: device 0 offset 0x100000, size 0x200000
> 
>  2097152 bytes read: OK
> 
> => bootm 1000000
> 
> ## Booting image at 01000000 ...
> 
>    Image Name:   Linux-2.6.20
> 
>    Created:      2007-07-31 13:41:49 UTC
> 
>    Image Type:   PowerPC Linux Kernel Image (gzip compressed)
> 
>    Data Size:    1836829 Bytes =  1.8 MB
> 
>    Load Address: 00000000
> 
>    Entry Point:  00000000
> 
>    Verifying Checksum ... OK
> 
>    Uncompressing Kernel Image ... OK
> 
>  
> 
> Actually that is good (I hope) since it may then have *nothing* to do
> with NAND Flash
> 
>  
> 
> I have loaded from RAM and verified that the JFFS2 file system is
> in /dev/mtdblock6
> 
>  
> 
> I also have /boot in that system with the hopes that the kernel would
> find the extra files it needs from there
> 
>  
> 
> Anyone have any ideas?
> 
>  
> 
> tom
> 
>  
> 
> 
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