[U-Boot-Users] help - loading linux kernel

[U-Boot-Users] help - loading linux kernel

[Ronen Shitrit]

Hi

I have a U-Boot which is working just fine,
and I'm trying to boot a kernel(ver 2.4) image with it ,
after I load the uImage to the DRAM by using the tftp as it is described
in the README file, I'm doing bootm to the uImage location,
I see that the code is getting to the kernel code , but there it get lost
after we disable the MMU in head.S.

(I know that the kernel version I have should be stable on my board 
cause with the DINK monitor
I can load it just fine.)

Are there any special changes I should make to the Kernel in order for 
it to be able to boot from the U-Boot??
If so, where can I find a good reference for it??

Thanks a lot

-- 
Ronen Shitrit

M.S.I.L
D.N. Misgav  20184
Tel:   +972-4-9951000
Fax:   +972-4-9951001
Email: mailto: ronen.shitrit at il.marvell.com
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[U-Boot-Users] help - loading linux kernel

[Wolfgang Denk]

Dear Ronen,

in message <3FA7F2E9.5080302@il.marvell.com> you wrote:
> 
> I have a U-Boot which is working just fine,
> and I'm trying to boot a kernel(ver 2.4) image with it ,
> after I load the uImage to the DRAM by using the tftp as it is described
> in the README file, I'm doing bootm to the uImage location,
> I see that the code is getting to the kernel code , but there it get lost
> after we disable the MMU in head.S.

...in other words, you see no output on  the  console  after  passing
control to the Linux kernel.

> Are there any special changes I should make to the Kernel in order for 
> it to be able to boot from the U-Boot??
> If so, where can I find a good reference for it??

Well, I think it is especially useful to read

(1) the README file which comes with U-Boot

(2) the FAQ section of the DULG at
    http://www.denx.de/twiki/bin/view/DULG/Manual
    Pay special attention to question "12.1.3. Linux hangs ..."
    at http://www.denx.de/twiki/bin/view/DULG/LinuxHangsAfterUncompressingKernel


Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at denx.de
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