Re: Problems with PXA270 migration from 4.20 to 5.0

From: Dean Ramsier (ramsiernospam_at_nospam.com)
Date: 02/25/05 

Date: Fri, 25 Feb 2005 09:08:30 -0500

Well, I'd recommend a new code base :)

http://www.vibren.com/Products/Schema_BSP.htm 

-- 
Dean Ramsier - eMVP
Vibren Technologies
"Mark Murawski" <mmurawski@nVoCtOhLaLnEkCyTou.com> wrote in message
news:e9UmV$rGFHA.3724@TK2MSFTNGP10.phx.gbl...
> Hey everyone.
>
> We've been running CE 4.20 on our Mainstone derived PXA270 based
> platform for a while now.  We had a bit of trouble getting anyone to
> give us a starting point BSP (long story), but we ended up basing our
> BSP on Intel's Pocket PC 2003 BSP for Mainstone II.  Aside from the
> usual "What were they thinking when they wrote this?" issues, things
> went pretty well.
>
> Just recently, I've started trying to move our platform to CE 5.0.  I've
> read a lot of the discussions here about following the new PQOAL model
> versus moving an existing BSP from 4.20 over as-is, and I decided
> (perhaps foolishly) to follow the PQOAL.  In fact, my plan has been to
> basically port the Mainstone II BSP from Platform Builder 5.0 to our
> platform by cloning it, and then merging our changes we made in our PB
> 4.20 BSP forward.  Our 4.20 BSP and the 5.0 Mainstone BSP have a lot of
> common roots.
>
> Sounds sane, right?  Um...all except for the part where I realize that
> Microsoft put very Mainstone hardware specific components into
> platform\common and public\common.  This stuff might be production
> quality, but only if you intend to ship a Mainstone board as-is.
>
> My next plan was to identify each of this Mainstone tainted libraries,
> copy them into my own BSP, and make my own modifications there.  I'm
> still going down this path, but I'm pretty sure I'm going to run into
> problems trying to avoid namespace collisions with header files.  I
> mean, I'm still using XLLP stuff.  Just, my own copy of it.
>
> So, has anyone else run into the same challenge?  If so, have you come
> up with a better solution than my current course of action?
>
> For reference, here's a quick list of the libraries I've spotted so far
> that have lots of Mainstone specific pieces in them.  (The specifics
> include stuff like specific GPIO assignments, Mainstone BLR references,
> etc.)
>
> *-  $(_COMMONOAKROOT)\lib\$(_CPUINDPATH)\pxa27x_xllp.lib
> *-  $(_PLATCOMMONLIB)\$(_CPUINDPATH)\oal_intr_pxa27x.lib
>
> (Plus, all the headers.  Why is this stuff in the common directories
> when it is so tightly tied to a specific hardware implementation?!?!?)
>
> You know, after writing this out...it doesn't seem as bad as I thought
> originally.  Hmm...
>
> Mark Murawski
> Lead Software Engineer
> Vocollect, Inc.

Relevant Pages

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