Re: Linux on IPAQ 214 (PXA310)

Kevin O'Connor wrote:
> On Fri, Mar 07, 2008 at 01:22:21PM +0000, Oliver Ford wrote:
>> Further to the not shutting down properly thoughts, I was looking at the
>> resume-into-boot feature of HaRET, in the hope that letting windows do
>> the hardware shutdown would be more successful. Unfortunately I can't
>> work out how to find the required RESUMEADDR. Is there some method for
>> doing this?
>
> I found it by just searching ram for the signature. It is 0xea0003fe
> followed by 4K of zeros. It is usually aligned on some large boundary
> near the top of ram. (For example, it is at 0xa0040000 on Apache and
> 0x30100000 on Hermes.)
>
> Note that the resume-into-boot feature of haret has never really been
> tested.
>
>> I notice that the resume into boot handler checks for a specific
>> instruction at the beginning of winCE's resume handler. Is this always
>> what it is, even for the newest versions of windows mobile? If so, I may
>> just try searching the entire memory for it and attempting the resume
>> tracing stuff a each place, see where it gets to. My ipaq is running Win
>> Mobile 6 (CE v5.2.1711).
>
> I don't know if it still holds true for wince 6, but I think there is
> a good chance it does.
>
> -Kevin
>
Thanks. It's no longer necessary though. We have fixed the kernel oops
in normal boot process. We think it is just HaRET over-estimating the
amount of RAM and then the kernel trying to use memory that isn't there.
Including a specific RAMSIZE instruction fixes it.

Oliver
Received on Sat Mar 08 2008 - 14:51:44 EST