New user: need a hand booting the kernel from NAND

New user: need a hand booting the kernel from NAND

[George Pontis]

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Machine is a custom at91sam9g45 board with NOR and NAND flash. The bootstrap
loader and barebox, and barebox environment are in the NOR flash. All seems
to be working well there. The NAND is partitioned into 2 chunks:
2560K(kernel),-(root)

 

I used ubimkvol to create a volume on root and the nfs command to put a root
filesystem on it. Seems to work fine if I get the kernel via NFS.

 

I have a good working kernel in uImage format, and used "nfs
/var/share/uImage  /dev/nand0.kernel.bb" in an attempt to write it to the
2560K partition. The nfs copy seemed to work fine. However, it will not
accept the image. I get messages about an unknown format, suggesting to try
-f. Was it the wrong procedure that I used to copy the uImage ?

 

Thanks for any help or pointers.

 

George


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Re: New user: need a hand booting the kernel from NAND

[Sascha Hauer]

On Wed, Apr 18, 2012 at 11:42:25PM -0700, George Pontis wrote:
> Machine is a custom at91sam9g45 board with NOR and NAND flash. The bootstrap
> loader and barebox, and barebox environment are in the NOR flash. All seems
> to be working well there. The NAND is partitioned into 2 chunks:
> 2560K(kernel),-(root)
> 
>  
> 
> I used ubimkvol to create a volume on root and the nfs command to put a root
> filesystem on it. Seems to work fine if I get the kernel via NFS.
> 
>  
> 
> I have a good working kernel in uImage format, and used "nfs
> /var/share/uImage  /dev/nand0.kernel.bb" in an attempt to write it to the
> 2560K partition. The nfs copy seemed to work fine. However, it will not
> accept the image. I get messages about an unknown format, suggesting to try
> -f. Was it the wrong procedure that I used to copy the uImage ?

Have you erased you nand before (erase /dev/nand0.kernel.bb)?

Sascha

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Re: New user: need a hand booting the kernel from NAND

[Jean-Christophe PLAGNIOL-VILLARD]

On 23:42 Wed 18 Apr     , George Pontis wrote:
>    Machine is a custom at91sam9g45 board with NOR and NAND flash. The
>    bootstrap loader and barebox, and barebox environment are in the NOR
>    flash. All seems to be working well there. The NAND is partitioned into 2
>    chunks: 2560K(kernel),-(root)
> 
>     
> 
>    I used ubimkvol to create a volume on root and the nfs command to put a
>    root filesystem on it. Seems to work fine if I get the kernel via NFS.
> 
>     
> 
>    I have a good working kernel in uImage format, and used "nfs
>     /var/share/uImage  /dev/nand0.kernel.bb" in an attempt to write it to the
>    2560K partition. The nfs copy seemed to work fine. However, it will not
>    accept the image. I get messages about an unknown format, suggesting to
>    try -f. Was it the wrong procedure that I used to copy the uImage ?
> 
>     
> 
>    Thanks for any help or pointers.
I recommand you to use upate command to bo so

update -t kernel -d nand -m nfs -f /var/share/uImage

I recommand you also to drop the uImage support and boot the zImage directly

you will boot more fast

and I also recommand you to boot from nor if you can

so you don't need the bootstrap

Best Regards,
J.

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