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Wed, 6 Jul 2022 03:54:23 -0400 (EDT) Date: Wed, 6 Jul 2022 00:54:20 -0700 From: Peter Delevoryas To: =?iso-8859-1?Q?C=E9dric?= Le Goater Cc: Peter Maydell , Andrew Jeffery , Joel Stanley , qemu-arm@nongnu.org, qemu-devel@nongnu.org Subject: Re: [PATCH v2 9/9] docs: aspeed: Add fby35 multi-SoC machine section Message-ID: References: <20220705191400.41632-1-peter@pjd.dev> <20220705191400.41632-10-peter@pjd.dev> <6dc63502-11ae-633a-a9a0-90f0fe32e808@kaod.org> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <6dc63502-11ae-633a-a9a0-90f0fe32e808@kaod.org> Received-SPF: pass client-ip=66.111.4.229; envelope-from=peter@pjd.dev; helo=new3-smtp.messagingengine.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FROM_FMBLA_NEWDOM14=0.998, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Wed, Jul 06, 2022 at 07:58:44AM +0200, Cédric Le Goater wrote: > On 7/5/22 21:14, Peter Delevoryas wrote: > > Signed-off-by: Peter Delevoryas > > Reviewed-by: Cédric Le Goater > > I fixed inline the URL links and moved the section at the end of the file. > > Thanks, > > C. Thanks for that! > > > --- > > docs/system/arm/aspeed.rst | 48 ++++++++++++++++++++++++++++++++++++++ > > 1 file changed, 48 insertions(+) > > > > diff --git a/docs/system/arm/aspeed.rst b/docs/system/arm/aspeed.rst > > index 5d0a7865d3..b233191b67 100644 > > --- a/docs/system/arm/aspeed.rst > > +++ b/docs/system/arm/aspeed.rst > > @@ -136,6 +136,54 @@ AST1030 SoC based machines : > > - ``ast1030-evb`` Aspeed AST1030 Evaluation board (Cortex-M4F) > > +Facebook Yosemite v3.5 Platform and CraterLake Server (``fby35``) > > +================================================================== > > + > > +Facebook has a series of multi-node compute server designs named > > +Yosemite. The most recent version released was > > +`Yosemite v3 `. > > + > > +Yosemite v3.5 is an iteration on this design, and is very similar: there's a > > +baseboard with a BMC, and 4 server slots. The new server board design termed > > +"CraterLake" includes a Bridge IC (BIC), with room for expansion boards to > > +include various compute accelerators (video, inferencing, etc). At the moment, > > +only the first server slot's BIC is included. > > + > > +Yosemite v3.5 is itself a sled which fits into a 40U chassis, and 3 sleds > > +can be fit into a chassis. See `here ` > > +for an example. > > + > > +In this generation, the BMC is an AST2600 and each BIC is an AST1030. The BMC > > +runs `OpenBMC `, and the BIC runs > > +`OpenBIC `. > > + > > +Firmware images can be retrieved from the Github releases or built from the > > +source code, see the README's for instructions on that. This image uses the > > +"fby35" machine recipe from OpenBMC, and the "yv35-cl" target from OpenBIC. > > +Some reference images can also be found here: > > + > > +.. code-block:: bash > > + > > + $ wget https://github.com/facebook/openbmc/releases/download/openbmc-e2294ff5d31d/fby35.mtd > > + $ wget https://github.com/peterdelevoryas/OpenBIC/releases/download/oby35-cl-2022.13.01/Y35BCL.elf > > + > > +Since this machine has multiple SoC's, each with their own serial console, the > > +recommended way to run it is to allocate a pseudoterminal for each serial > > +console and let the monitor use stdio. Also, starting in a paused state is > > +useful because it allows you to attach to the pseudoterminals before the boot > > +process starts. > > + > > +.. code-block:: bash > > + > > + $ qemu-system-arm -machine fby35 \ > > + -drive file=fby35.mtd,format=raw,if=mtd \ > > + -device loader,file=Y35BCL.elf,addr=0,cpu-num=2 \ > > + -serial pty -serial pty -serial mon:stdio \ > > + -display none -S > > + $ screen /dev/tty0 # In a separate TMUX pane, terminal window, etc. > > + $ screen /dev/tty1 > > + $ (qemu) c # Start the boot process once screen is setup. > > + > > Supported devices > > ----------------- >