Re: hx4700 Gentoo files

pHilipp Zabel wrote:
> On Dec 20, 2007 9:31 PM, Tamas Szabo <klt29_at_freemail.hu> wrote:
>> pHilipp Zabel wrote:
>>> On Dec 20, 2007 7:11 PM, Tamas Szabo <klt29_at_freemail.hu> wrote:
>>>> Hi,
>>>>
>>>> Currently I'm using WM6 / Linux on CF and works correctly.
>>>>
>>>> I made a comparison on WM6 and WM5 image. The first difference appeared
>>>> at 0x1C0045 which is far more then bootloader stuff.
>>> Hm? 1.75MB is well past the wince kernel...
>>> So the WM6 image builds on a WM5 kernel?
>>>
>>>> Anyway, the address is relative. Do you mean in the physical flash or SD
>>>> image or "nbf" or "nb0" file?
>>>>
>>>> In case of flash content it starts at 0x40000 but immediately jumps to
>>>> 0x41000 ie. right after the first 256k (ipl?).
>>> The hx4700 has NOR flash, not a DoC flashdrive, so there is no IPL/SPL split.
>>> The first 0x40000 contain the complete bootloader (the stuff mostly in
>>> SPL on newer devices).
>> Ok, it was a misunderstanding. I thought ipl as initial bootloader. I
>> think the correct terminology may 1stage loader.
>>
>> Nevertheless, I know that this is a Linux list not Windows Mobile, is
>> there resources from which a newbie can learn how the WM system is
>> working on HX4700? Ex.: where the execution starts after wake up from
>> sleep mode, how hardware initialized, etc...
>
> Disassemble the htc bootloader and wince kernel
> or look at the SDG bootloader / linux kernel source :)
> After reset, most ARM CPUs always start executing at address
> 0x00000000 (which is the start of flash all handhelds that I know)

Well, I also read the PXA datasheet, so 0x0 is obvious, and sorry, my
English is no fluent, thus sometime I can't say exactly what I want...

Of course, disassembling (and inspect) HTC bootloader and WinCE kernel
is a good idea, but I feel it too difficult with my poor knowledge:-(

I thought someone else already did this work.

So basically it would be nice to see and understand the boot
process/sequence of HTC and WinCE.

Also, a schematic of this PDA would be a big help, but of course HP
keeps this as a secret...

>
> cheers
> Philipp
>
>

/sza2
Received on Fri Dec 21 2007 - 03:05:27 EST