Re: [Qemu-devel] TCG on PowerPC arch

[Salvatore Lionetti]

Hi,

thanks for trustworth toward me!

As i said in previous email, i decide to test u-boot emac driver.
Actually:
- uboot cross compile and make process generates an image for walnut board
- qemu load such image but stop executing during board init

Next step i'm doing is to build a new board in u-boot (possibly linking the 
configuration of qemu machine with u-boot, but with low priority) and verify 
emac/mal layer.

The link you give is about 'Sycamore' board, also support by u-boot.
Thanks for this info, i'll try the most 'simple' board to give feedback ASAP.

Have a good day

--- Ven 31/10/08, Hollis Blanchard <address@hidden> ha scritto:

> Da: Hollis Blanchard <address@hidden>
> Oggetto: Re: [Qemu-devel] TCG on PowerPC arch
> A: address@hidden
> Cc: address@hidden
> Data: Venerdì 31 ottobre 2008, 15:44
> To summarize, you're saying that the only way you're
> able to test the
> EMAC patch is with a custom firmware you can't make
> public? Obviously
> that's not ideal, but I think some EMAC emulation is
> better than none
> at all, so IMHO that shouldn't necessarily block your
> patch.
> 
> The problem I had when trying to test qemu's 405
> emulation was that
> Linux needed firmware to load it, and no 405 firmware is
> distributed
> with qemu. At the time, Jocelyn claimed we could download a
> binary
> uboot image from AMCC, but that didn't actually work.
> (I think we
> ended up using
> http://www.amcc.com/Embedded/Downloads/download.html?item=129&start=y).
> This was probably a year ago, so details are fuzzy now.
> 
> However, if you have access to a 440 board, you could use
> KVM
> (http://kvm.qumranet.com/kvmwiki/PowerPc) to boot a guest
> kernel with
> the EMAC driver and test that way. Qemu's instruction
> emulation
> doesn't support 440, but KVM implements all the
> instruction emulation
> itself and does run on 440.
> 
> Anyways, I definitely think it's worthwhile to update
> your patch to current SVN.
> 
> -Hollis
> 
> On Thu, Oct 30, 2008 at 3:53 AM, Salvatore Lionetti
> <address@hidden> wrote:
> > Hi Hollis,
> >
> > please excuse me, but i can't release my firmware
> (based on OSE)
> > If you agree, i'd like to
> > - catch svn status to test emac for my 405 based
> board, custom fw
> > - compile a linux kernel for ppc405 cpu, with emac
> driver
> > (i've trying eCos but no emac driver :(0)
> >
> > For first step actually have some pb with proxy
> script.
> > The second one is not strictly depend on me, but
> 'm very glad if anybody do it. Moreover emac driver in
> our custom firmware only used reversed mii, and is not well
> written code!  so however i'd like to use another os.
> > Moreover the emac device is tested only with such
> driver so i expect some pb during porting, so excuse in
> advance if some pb could arise.
> >
> > Have a good day
> > Salvatore
> >
> > --- Mer 29/10/08, Hollis Blanchard
> <address@hidden> ha scritto:
> >
> >> Da: Hollis Blanchard <address@hidden>
> >> Oggetto: Re: [Qemu-devel] TCG on PowerPC arch
> >> A: address@hidden
> >> Cc: address@hidden
> >> Data: Mercoledì 29 ottobre 2008, 16:15
> >> On Tue, Oct 28, 2008 at 3:41 PM, Andreas Färber
> >> <address@hidden> wrote:
> >> >
> >> > How did you actually use and test your eMac
> emulation?
> >> I assume you did not
> >> > use a PReP Linux kernel for that? If you
> could provide
> >> some details, that
> >> > might help with testing the TCG conversion
> too.
> >>
> >> (Just in case there's any confusion, EMAC is
> the name
> >> for the ethernet
> >> controller on IBM's 405- and 440-based SoCs,
> not to be
> >> confused with
> >> Apple's eMac product.)
> >>
> >> Salvatore, did you use a 405 Linux kernel with the
> EMAC
> >> driver to test
> >> this patch? If so, how exactly did you boot? What
> did you
> >> do for
> >> firmware?
> >>
> >> -Hollis
> >
> >
> >      Unisciti alla community di Io fotografo e video,
> il nuovo corso di fotografia di Gazzetta dello sport:
> > http://www.flickr.com/groups/iofotografoevideo
> >


      Unisciti alla community di Io fotografo e video, il nuovo corso di 
fotografia di Gazzetta dello sport:
http://www.flickr.com/groups/iofotografoevideo