[PATCH v2 5/5] docs/system/riscv: add documentation for k230 machine

[Chao Liu <chao.liu@zevorn.cn>]

Add documentation for k230 virt reference platform.

Signed-off-by: Chao Liu <chao.liu@zevorn.cn>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
---
 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 8bdab8fb8a..bfa63f832e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1713,6 +1713,7 @@ F: include/hw/riscv/xiangshan_kmh.h
 K230 Machines
 M: Chao Liu <chao.liu@zevorn.cn>
 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``)
+==========================================================================
+The ``k230`` machine is compatible with with Kendryte K230 SDK.
+
+The K230 is a chip from the AIoT SoC series made by Kendryte ® — a part of
+Canaan Inc. It uses a brand-new multi-heterogeneous unit accelerated computing
+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 computing
+frameworks, and for some typical networks, its usage rate is over 70%. Besides,
+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 processing
+and AI computing). It also has many good features: low delay, high performance,
+low power use and fast start-up.
+
+For more information, see <https://www.kendryte.com/en/proDetail/230>
+
+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
 
+   riscv/k230
    riscv/microblaze-v-generic
    riscv/microchip-icicle-kit
    riscv/shakti-c
-- 
2.51.0