ARM926 EJ-S MMU problem in WinCE5.0

[Sanjay]

Hi all,

I'm developing a bootloader for ARM926 EJ-S, but there's a serious problem
need your help.
I've enabled MMU in bootloader in order to use virtual addresses.
But when I turn off MMU before jumping to the physical start address of
kernel, PC (porgram Counter) doesn't jump to the physical address I want.
It seems all instructions after turning off MMU cannot be fetched to execute
because PC is not there.

By the way,
I'm sure that MMU has been disabled because I've dumped the memory content
with physical address in ICE.

I don't know how to solve this problem, but I need this bootloader to bring
my WinCE OS image.

Hope there's someone could help me....
Thank you very much

Best Regards,
Sanjay

 

[CyberTaz]

And in 25 words or less, you thought you'd find the help you need in a
PowerPoint for Macintosh newsgroup because...

Regards |:>)
Bob Jones
[MVP] Office:Mac

 

[Jim Gordon MVP]

Hi all,

I'm developing a bootloader for ARM926 EJ-S, but there's a serious problem
need your help.
I've enabled MMU in bootloader in order to use virtual addresses.
But when I turn off MMU before jumping to the physical start address of
kernel, PC (porgram Counter) doesn't jump to the physical address I want.
It seems all instructions after turning off MMU cannot be fetched to execute
because PC is not there.

By the way,
I'm sure that MMU has been disabled because I've dumped the memory content
with physical address in ICE.

I don't know how to solve this problem, but I need this bootloader to bring
my WinCE OS image.

Hope there's someone could help me....
Thank you very much

Best Regards,
Sanjay

Hi Sanjay,

As Cybertaz noted, you wound up in a PowerPoint for Macintosh newsgroup.
Others have wound up here inadvertently, as well.

We can't help you with the Win CES problem, but maybe you can tell us
how you wound up here so we can try to fix the broken path to the WinCE
group.

Thanks.

-Jim