[U-Boot-Users] ppc405gp cpu problems

[Wolfgang Denk]

In message <008d01c4986d$8293fb90$030aa8c0 at t> you wrote:
>
> first problem with bootloader:
...
> Seems everybody else is executing this code without problems

Indeed. Are you sure your CPU can read  the  flash  contents  without
problems?

> Another problem is with MMU on linux.
> cpu crashes almost immediately at start.
> when linux atempts to initialize MMU

How do you know? Are you using a JTAG debugger? Which  one/  Does  it
understand  to  use virtual addresses, and is it configured correctly
for this?

> What can cause such behavior? Or these cpu have some defect?

I guess you are using an  inappropriate  and/or  misconfigured  tool.
Additionally,  there  might  be the typical RAM problems you can read
about in at least 9 out of 10 postings on tis list.

Best regards,

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
8 Catfish                                               = 1 Octo-puss