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Mon, 15 Dec 2025 09:01:44 -0800 (PST) From: Chao Liu To: pbonzini@redhat.com, dbarboza@ventanamicro.com, palmer@dabbelt.com, alistair.francis@wdc.com, liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com Cc: qemu-riscv@nongnu.org, qemu-devel@nongnu.org, hust-os-kernel-patches@googlegroups.com, 1440332527@qq.com, 3160104094@zju.edu.cn, temashking@foxmail.com, me@ziyao.cc, Chao Liu , Chao Liu Subject: [RESEND PATCH v3 5/5] docs/system/riscv: add documentation for k230 machine Date: Tue, 16 Dec 2025 01:01:18 +0800 Message-ID: <13ed5f4d13d117739f94d592cf2fc183c99f1f95.1765816341.git.chao.liu.zevorn@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::644; envelope-from=chao.liu.zevorn@gmail.com; helo=mail-pl1-x644.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Mon, 15 Dec 2025 12:15:19 -0500 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1765829348379158500 From: Chao Liu Add documentation for k230 virt reference platform. Signed-off-by: Chao Liu Reviewed-by: Daniel Henrique Barboza --- MAINTAINERS | 1 + docs/system/riscv/k230.rst | 48 ++++++++++++++++++++++++++++++++++++ docs/system/target-riscv.rst | 1 + 3 files changed, 50 insertions(+) create mode 100644 docs/system/riscv/k230.rst diff --git a/MAINTAINERS b/MAINTAINERS index 1d2f2c468c..e84703c1bb 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1740,6 +1740,7 @@ F: include/hw/riscv/xiangshan_kmh.h K230 Machines M: Chao Liu S: Maintained +F: docs/system/riscv/k230.rst F: hw/riscv/k230.c F: hw/watchdog/k230_wdt.c F: include/hw/riscv/k230.h diff --git a/docs/system/riscv/k230.rst b/docs/system/riscv/k230.rst new file mode 100644 index 0000000000..3e6ca295df --- /dev/null +++ b/docs/system/riscv/k230.rst @@ -0,0 +1,48 @@ +Kendryte K230 virt reference platform (``k230``) +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D +The ``k230`` machine is compatible with with Kendryte K230 SDK. + +The K230 is a chip from the AIoT SoC series made by Kendryte =C2=AE =E2=80= =94 a part of +Canaan Inc. It uses a brand-new multi-heterogeneous unit accelerated compu= ting +structure. + +This chip has 2 RISC-V computing cores and a new-generation KPU (Knowledge +Process Unit) smart computing unit. + +It has multi-precision AI computing ability, works with many common AI com= puting +frameworks, and for some typical networks, its usage rate is over 70%. Bes= ides, +the K230 chip supports many peripheral connections and has several special +hardware acceleration units (like 2D and 2.5D accelerators). It can speed = up +different tasks (such as image processing, video processing, audio process= ing +and AI computing). It also has many good features: low delay, high perform= ance, +low power use and fast start-up. + +For more information, see + +Supported devices +----------------- +The ``k230`` machine supports the following devices: + +* 1 c908 cores +* Core Local Interruptor (CLINT) +* Incoming MSI Controller (IMSIC) +* 2 K230 Watchdog Timer +* 4 UART + +Boot options +------------ +The ``k230`` machine can start using the standard ``-bios`` +functionality for loading the boot image. You need to compile and link +the firmware, kernel, and Device Tree (FDT) into a single binary file with +K230 SDK(k230_canmv_defconfig), such as ``uboot``. + +Running +------- +Below is an example command line for running the ``k230`` +machine: + +.. code-block:: bash + + $ qemu-system-riscv64 -machine k230 \ + -bios k230_sdk/output/k230_canmv_defconfig/little/uboot/u-boot \ + -nographic diff --git a/docs/system/target-riscv.rst b/docs/system/target-riscv.rst index 89b2cb732c..2103ff6173 100644 --- a/docs/system/target-riscv.rst +++ b/docs/system/target-riscv.rst @@ -66,6 +66,7 @@ undocumented; you can get a complete list by running .. toctree:: :maxdepth: 1 =20 + riscv/k230 riscv/microblaze-v-generic riscv/microchip-icicle-kit riscv/shakti-c --=20 2.51.0