Hi Curt,
in message <20020910051430.GA1543 at lenin.net> you wrote:
>
> Note, however that I jump to 0x410000, not the 0x400000 where I loaded
> the image. A kind soul informed me that I had to start execution at
> an offset of 0x10000 from where I load the image. That really helped
> me a lot, since trying to execute at 0x400000 would just hang at the go.
>
> Does anyone know a reason for the 0x10000 offset? Can you point me to
It seems you are loading a file in ELF format. 0x10000 is 64 kB -
this size of the ELF file header. In the Pre-PPCBoot times when we
still used this bootstrap loader method for booting we alsways
stipped this header - this saves 64 kB (more than 10% of the image
size!) in flash:
dd if=zImage of=zImage.raw bs=64k skip=1
> the documentation ? Also what do the two columns of addresses mean in
> the above output ? Subsequent to this break through, however, I am
These are the start and end addresses of the respective memory areas
used by your bootstrap loader code.
> stuck at the "Linux/PPC load:" line. The system just hangs here. I
> would have expected to see messages like:
>
> >> Uncompressing Linux...done.
> >> Now booting the kernel
> >> Linux version 2.4.4 ....
> >> .....
>
> But I get nothing. It is as if the uncompression code is not being
> run. Anyone have any ideas on how to get past this step?
Attach a debugger? Do you have access to a BDI2000?
> I thought it might be my serial port is not configured properly.
> Maybe the system is booting, but I'm not seeing anything over the
> serial line. In the documentation for my board it says the serial
> port is SMC1 and the ethernet is SMC2. In the kernel config I see
This is impossible. The SMC ports cannot be used for Ethernet. I bet
you mistake this for SCCx.
> options for setting the ethernet to SMC1-SMC3, but I do not see
No, again, this is SCCx - there is not even a SMC3.
> anything about setting the serial port to SMC1. Could that be a
> problem?
SMC1 is enabled as serial console port by default. In the standard
kernel there is no configuration option for this.
> I do appreciate your time, really. I'm doing this as a hobby --
> nobody is going to get rich if I can get this board to boot :)
Good luck!
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
At the source of every error which is blamed on the computer you will
find at least two human errors, including the error of blaming it on
the computer.
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