[U-Boot-Users] Noob question regarding uncompressed kernel image

Wolfgang Denk wd at denx.de
Wed Jan 2 12:46:24 CET 2008


In message <6721.193.89.194.31.1199268155.squirrel at mail.pgpoulsen.dk> you wrote:
> 
> I'm trying to make my board load an uncompressed kernel (I'm playing with boot
> times). I make the image like this:
> 
> mkimage  -A ppc -O linux -T kernel -d vmlinux -C none -n "uImage" uImage

I don't see the (required) "-a" and "-e"  options  in  your  call  to
mkimage...

> Unfortunately my board boots like this:

Like this? What is "this"? You don't shouw us which exact boot
commands you used, nor what your environment settings are.

How are we supposed to help you without all this important information?

> ## Booting image at 01000000 ...
>    Image Name:   uImage
>    Image Type:   PowerPC Linux Kernel Image (uncompressed)
>    Data Size:    4242375 Bytes =  4 MB
>    Load Address: 00000000
>    Entry Point:  c000000c
^^^^^^^^^^^^^^^^^^^^^^^^^^^

Where is this coming from?

>    Verifying Checksum ... OK
> OK

If boot time plays a role, you might consider turning off the checksum
verification - which will take a looong time on an uncompressed kernel
image. See "verify" environment variable.

> And that was it :-(

No big surprise if you jump right in the middle of nowhere...

> it boots fine, so I think that my vmlinux/vmlinux.bin.gz image is fine.

No, it is not.

> Can anybody tell what I'm doing wrong?

See above.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
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Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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