Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Tue, 3 Feb 2009 10:01:18 -0600

On Monday 02 February 2009 20:11:28 zhuangjian wrote:
> I think the flash bank A has some physical
> problem. It can not be reprogramed in ppcbug.

Are you sure it's not just write protected?  Jumper J16 controls Flash write 
protection.  In case they help, my local instructions for programming the 
flash on an MVME5100 are here:
    http://www.aps.anl.gov/asd/controls/vxWorks/boot5100.html

>   I have loaded vxworks bootrom and ramimage into ram by ppcbug.Some
> version of ram image can run, but can not excute many shell command, like
> i, reporting instruction pointer exception.All version of bootrom can not
> run.I have checked the code of bootrom and find that at some instruction
> initializing memory part,bootrom will run fly. So, I have a question, is
> the memory map in ppcbug same as in vxworks?And what job should I do in 
> _sysInit?Because there are so many difference between sysInit(sysAlib.s)
> and romInit(romInit.s), I think maybe the initialization is incompleted in
> sysInit and do some job can not be done in romInit for booting by ppcbug.

Some BSPs (e.g. the mv6100 BSP) can be built to allow them to be run from the 
Bootrom, but the mv5100 doesn't have this capability.  I expect you could 
modify the mv5100 BSP to allow this, but it would probably be quite a lot of 
work to find out what all the settings are.

- Andrew
-- 
The best FOSS code is written to be read by other humans -- Harold Welte

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System