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Tue, 5 Jul 2022 15:14:19 -0400 (EDT) From: Peter Delevoryas To: Cc: Peter Delevoryas , =?utf-8?q?C=C3=A9dric_Le_Goater?= , Peter Maydell , Andrew Jeffery , Joel Stanley , qemu-arm@nongnu.org, qemu-devel@nongnu.org Subject: [PATCH v2 9/9] docs: aspeed: Add fby35 multi-SoC machine section Date: Tue, 5 Jul 2022 12:14:00 -0700 Message-Id: <20220705191400.41632-10-peter@pjd.dev> X-Mailer: git-send-email 2.37.0 In-Reply-To: <20220705191400.41632-1-peter@pjd.dev> References: <20220705191400.41632-1-peter@pjd.dev> MIME-Version: 1.0 Received-SPF: pass client-ip=66.111.4.229; envelope-from=peter@pjd.dev; helo=new3-smtp.messagingengine.com X-Spam_score_int: -12 X-Spam_score: -1.3 X-Spam_bar: - X-Spam_report: (-1.3 / 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_NEWDOM=1.498, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Peter Delevoryas Reviewed-by: Cédric Le Goater Reviewed-by: Joel Stanley --- 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 -----------------