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

From: BALATON Zoltan
Subject: Re: [Qemu-ppc] [PATCH v2 0/3] Sam460ex emulation
Date: Fri, 16 Feb 2018 11:55:36 +0100 (CET)
User-agent: Alpine 2.21 (BSF 202 2017-01-01)

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:


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?


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