@@ -15,27 +15,115 @@ The ``virt`` machine supports:
- Gpex host bridge
- Ls7a RTC device
- Ls7a IOAPIC device
-- Ls7a ACPI device
+- ACPI GED device
- Fw_cfg device
- PCI/PCIe devices
- Memory device
-- CPU device. Type: Loongson-3A5000.
+- CPU device. Type: la464-loongarch-cpu.
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``.
+cpu type ``la464-loongarch-cpu``.
Boot options
------------
-Now the ``virt`` machine can run test program in ELF format and the
-method of compiling is in target/loongarch/README.
+We can boot the LoongArch virt machine by specifying the uefi bios,
+initrd, and linux kernel. And those source codes and binary files
+can be accessed by following steps.
+
+(1) booting command:
.. 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
+ $ qemu-system-loongarch64 -machine virt -m 4G -cpu la464-loongarch-cpu \
+ -smp 1 -bios QEMU_EFI.fd -kernel vmlinuz.efi -initrd initrd.img \
+ -append "root=/dev/ram rdinit=/sbin/init consol e=ttyS0,115200" \
+ --nographic
+
+Note: The running speed may be a little slow, as the performance of our
+qemu and uefi bios is not perfect, and it is being fixed.
+
+(2) cross compiler tools:
+
+.. code-block:: bash
+
+ wget https://github.com/loongson/build-tools/releases/download/ \
+ 2022.05.29/loongarch64-clfs-5.0-cross-tools-gcc-full.tar.xz
+
+ tar -vxf loongarch64-clfs-5.0-cross-tools-gcc-full.tar.xz
+
+(3) qemu compile configure option:
+
+.. code-block:: bash
+
+ ./configure --disable-rdma --disable-pvrdma --prefix=usr \
+ --target-list="loongarch64-softmmu" \
+ --disable-libiscsi --disable-libnfs --disable-libpmem \
+ --disable-glusterfs --enable-libusb --enable-usb-redir \
+ --disable-opengl --disable-xen --enable-spice \
+ --enable-debug --disable-capstone --disable-kvm \
+ --enable-profiler
+ make
+
+(4) uefi bios source code and compile method:
+
+.. code-block:: bash
+
+ git clone https://github.com/loongson/edk2-LoongarchVirt.git
+
+ cd edk2-LoongarchVirt
+
+ git submodule update --init
+
+ export PATH=$YOUR_COMPILER_PATH/bin:$PATH
+
+ export WORKSPACE=`pwd`
+
+ export PACKAGES_PATH=$WORKSPACE/edk2-LoongarchVirt
+
+ export GCC5_LOONGARCH64_PREFIX=loongarch64-unknown-linux-gnu-
+
+ edk2-LoongarchVirt/edksetup.sh
+
+ make -C edk2-LoongarchVirt/BaseTools
+
+ build --buildtarget=DEBUG --tagname=GCC5 --arch=LOONGARCH64 --platform=OvmfPkg/LoongArchQemu/Loongson.dsc
+
+ build --buildtarget=RELEASE --tagname=GCC5 --arch=LOONGARCH64 --platform=OvmfPkg/LoongArchQemu/Loongson.dsc
+
+The efi binary file path:
+
+ Build/LoongArchQemu/DEBUG_GCC5/FV/QEMU_EFI.fd
+
+ Build/LoongArchQemu/RELEASE_GCC5/FV/QEMU_EFI.fd
+
+(5) linux kernel source code and compile method:
+
+.. code-block:: bash
+
+ git clone https://github.com/loongson/linux.git
+
+ export PATH=$YOUR_COMPILER_PATH/bin:$PATH
+
+ export LD_LIBRARY_PATH=$YOUR_COMPILER_PATH/lib:$LD_LIBRARY_PATH
+
+ export LD_LIBRARY_PATH=$YOUR_COMPILER_PATH/loongarch64-unknown-linux-gnu/lib/:$LD_LIBRARY_PATH
+
+ make ARCH=loongarch CROSS_COMPILE=loongarch64-unknown-linux-gnu- loongson3_defconfig
+
+ make ARCH=loongarch CROSS_COMPILE=loongarch64-unknown-linux-gnu-
+
+ make ARCH=loongarch CROSS_COMPILE=loongarch64-unknown-linux-gnu- install
+
+ make ARCH=loongarch CROSS_COMPILE=loongarch64-unknown-linux-gnu- modules_install
+
+Note: The branch of linux source code is loongarch-next.
+
+(6) initrd file:
+
+ You can use busybox tool and the linux modules to make a initrd file. Or you can access the
+ binary files: https://github.com/yangxiaojuan-loongson/qemu-binary
@@ -11,54 +11,7 @@
- System emulation
- Mainly emulate a virt 3A5000 board and ls7a bridge that is not exactly the same as the host.
- 3A5000 support multiple interrupt cascading while here we just emulate the extioi interrupt
- cascading. LS7A1000 host bridge support multiple devices, such as sata, gmac, uart, rtc
- and so on. But we just realize the rtc. Others use the qemu common devices. It does not affect
- the general use. We also introduced the emulation of devices at docs/system/loongarch/virt.rst.
-
- This version only supports running binary files in ELF format, and does not depend on BIOS and kernel file.
- You can compile the test program with 'make & make check-tcg' and run the test case with the following command:
-
- 1. Install LoongArch cross-tools on X86 machines.
-
- Download cross-tools.
-
- wget https://github.com/loongson/build-tools/releases/download/2022.05.29/loongarch64-clfs-5.0-cross-tools-gcc-full.tar.xz
-
- tar -vxf loongarch64-clfs-5.0-cross-tools-gcc-full.tar.xz -C /opt
-
- Config cross-tools env.
-
- . setenv.sh
-
- setenv.sh:
-
- #!/bin/sh
- set -x
- CC_PREFIX=/opt/cross-tools
-
- export PATH=$CC_PREFIX/bin:$PATH
- export LD_LIBRARY_PATH=$CC_PREFIX/lib:$LD_LIBRARY_PATH
- export LD_LIBRARY_PATH=$CC_PREFIX/loongarch64-unknown-linux-gnu/lib/:$LD_LIBRARY_PATH
- set +x
-
- 2. Test tests/tcg/multiarch.
-
- ./configure --disable-rdma --disable-pvrdma --prefix=/usr \
- --target-list="loongarch64-softmmu" \
- --disable-libiscsi --disable-libnfs --disable-libpmem \
- --disable-glusterfs --enable-libusb --enable-usb-redir \
- --disable-opengl --disable-xen --enable-spice --disable-werror \
- --enable-debug --disable-capstone --disable-kvm --enable-profiler
-
- cd build/
-
- make && make check-tcg
-
- or
-
- ./build/qemu-system-loongarch64 -machine virt -m 4G -cpu Loongson-3A5000 -smp 1 -kernel build/tests/tcg/loongarch64-softmmu/hello -monitor none -display none -chardev file,path=hello.out,id=output -serial chardev:output
+ You can reference docs/system/loongarch/loongson3.rst to get the information about system emulation of LoongArch.
- Linux-user emulation