Trouble "Transferring control to Linux (at address 00000000)"

[Frank Svendsbøe]

On Fri, Jun 26, 2009 at 7:12 PM, Mikhail
Zaturenskiy<mzaturenskiy.st at gmail.com> wrote:
> Hi Scott,
>
>> This isn't the denx list;
> I've noticed :) but I'm still learning about this whole process so I
> though I could get some general suggestions.
>
>> what kernel version is that, and with what
>> modifications from mainline?
> Kernel is v2.6.30, I'm not yet familiar enough with it to know what's
> been modified from mainline, just following instructions.
>
>> Note that ep88xc.dts in mainline is intended for use with PlanetCore, which
>> is what ships on that board.  You may need to make modifications for it to
>> work with u-boot (at the least, the IMMR base is probably different).
> Hmm, this hasn't occurred to me, thank you for pointing it out.
>

I don't have access to this board, but have experience with a similar
one (Adder 875), and
I might be able to help out. Scott's right. According to U-Boots
include/configs/EP88x.h,
CONFIG_SYS_IMMR is 0xf0000000, but the Linux the ep88xc.dts is
referring to an IMMR set
to 0xfa200000. Replace every instance of 0xfa20 with 0xf000, and it may work.

>> Also, make sure u-boot is properly updating the memory size in the device
>> tree.  Can you dump the post-fixup device tree in u-boot?
> Not sure, but I'll try to find out if that's possible. It'd certainly
> answer a lot of questions...
>
> Thanks,
> Mikhail Zaturenskiy
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