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:orphan:
==========================================
loongson3 virt generic platform (``virt``)
==========================================
The ``virt`` machine use gpex host bridge, and there are some
emulated devices on virt board, such as loongson7a RTC device,
IOAPIC device, ACPI device and so on.
Supported devices
-----------------
The ``virt`` machine supports:
- Gpex host bridge
- Ls7a RTC device
- Ls7a IOAPIC device
- Ls7a ACPI device
- Fw_cfg device
- PCI/PCIe devices
- Memory device
- CPU device. Type: Loongson-3A5000.
CPU and machine Type
--------------------
The ``qemu-system-loongarch64`` provides emulation for virt
machine. You can specify the machine type ``virt`` and
cpu type ``Loongson-3A5000``.
Boot options
------------
Now the ``virt`` machine can run test program in ELF format and the
method of compiling is in target/loongarch/README.
.. code-block:: bash
$ qemu-system-loongarch64 -machine virt -m 4G -cpu Loongson-3A5000 \
-smp 1 -kernel hello -monitor none -display none \
-chardev file,path=hello.out,id=output -serial chardev:output
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