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Re: [Qemu-ppc] [Qemu-devel] [PATCH 0/2] Firmware blob and git submodule

From: BALATON Zoltan
Subject: Re: [Qemu-ppc] [Qemu-devel] [PATCH 0/2] Firmware blob and git submodule for Sam460ex
Date: Wed, 21 Feb 2018 18:06:38 +0100 (CET)
User-agent: Alpine 2.21 (BSF 202 2017-01-01)

On Wed, 21 Feb 2018, Peter Maydell wrote:
On 20 February 2018 at 20:44, Emilio G. Cota <address@hidden> wrote:
On Tue, Feb 20, 2018 at 18:31:17 +0000, Peter Maydell wrote:
On 20 February 2018 at 18:10, BALATON Zoltan <address@hidden> wrote:
I've created a git repo for the Sam460ex u-boot sources and this adds
that as a submodule and a separate patch to add the binary built from
these sources. Feel free to keep this as two patches, squash them into
one patch or take the git repo and commit the content under the QEMU
repo and use that as a submodule as you see fit (or let me know if any
changes are needed for these patches).

BALATON Zoltan (2):
  roms: Added git submodule for u-boot-sam460 (firmware for sam460ex)
  pc-bios: Added u-boot-sam460 firmware binary

We already have a submodule for u-boot. Is it not possible to
build this bios blob from those upstream u-boot sources?

This is discussed in the following thread:
  Re: [Qemu-ppc] [PATCH v3 2/2] ppc: Add aCube Sam460ex board

If upstream u-boot have abandoned the board support I'm not very
enthusiastic about our taking it on :-(

It's not that upstream u-boot has abandoned board support (it only removed support for the PPC440 CPU it once had). The board itself never had support in upstream u-boot, it only exists in vendor's fork which is the reason we need a separate source and cannot use upstream u-boot source we already have.

In my opinion we don't aim to take on support for this board in u-boot, we only need to include the firmware binary for the emulation to be useful which then requires us to also include the source for the GPL it's licensed under. I've also found a few bugs in the firmware which I've fixed but apart from such occasional bug fixes when needed I don't expect to take over support for the board from the hardware vendor so this source is only so we can include the firmware binary which is needed for the board emulation. Does this answer your concerns?


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