Re: [Qemu-ppc] [PATCH v2 0/3] Sam460ex emulation

[BALATON Zoltan]

On Fri, 16 Feb 2018, Thomas Huth wrote:
> On 15.02.2018 22:27, BALATON Zoltan wrote:
> > Remaining patches for Sam460ex emulation. The original cover letter
> > with more details is here:
> >
> > http://lists.nongnu.org/archive/html/qemu-ppc/2017-08/msg00112.html
> >
> > We'll need to also add binaries for firmware (customised u-boot
> > version) and dtb but I'm not sure how to submit those.
>
> For the dtb, I think you could simply provide a patch that adds the dts
> file to the pc-bios directory and another one that adds the dtb. Just
> like it is already done with pc-bios/bamboo.dts / pc-bios/bamboo.dtb.

OK thanks, I'll do that. Does it have to be two separate patches?

> For u-boot, can you use the same upstream level as e500 ? I.e. check
> whether "git submodule status roms/u-boot" is fine for you? If that's
> ok, just do a "git submodule update roms/u-boot" and build uboot from
> that directory - you then can submit a binary patch with that file for
> pc-bios, too.
>
> In case you need another u-boot version, I think you've got to update
> the submodule to the newer upstream version first, and then also rebuild
> the e500 binary... Cumbersome, but that's necessary since we've got to
> ship the u-boot sources in the QEMU release tarballs, too, to be
> compliant with the GPL.

Unfortunately we can't use the same u-boot as e500 because this board uses 
a forked and patched version which is not in upstream u-boot and upstream 
u-boot has even dropped support for this CPU in latest version so we 
actually need an older version (with patches) and not a newer one.

Therefore, it needs to be a binary built from a separate source so I think 
a new submodule will need to be added for this. How to do that? Where to 
host this git repo? Should I put it on github and refer to that as an 
external repo or should it be hosted in qemu repo somehow?

Regards,
BALATON Zoltan