Loongarch docs update
-----BEGIN PGP SIGNATURE----- iQFRBAABCgA7FiEEekgeeIaLTbaoWgXAZN846K9+IV8FAmL4/I8dHHJpY2hhcmQu aGVuZGVyc29uQGxpbmFyby5vcmcACgkQZN846K9+IV/kCQf9HTiK6VSrbJXdOLQi iGfXwZTcRDxG4brzj+GQ2/nuag2Dg9McADUxs1/3zlb965+CuQdfqtjSzgfxCjzX iVvHq3wtCoOQZ5/T+XrFCaew0djkT6N/hBsa33oORXg5o5mAzCIFObuTMnusvjTu VPXWe65fxTv3dsHZgjWekRZLu8Bn/anLypJxHzzFbXL3+RTKJ5u6GGVMn0DEcvEq ooHYhETBEXmdKCbj2QpRmG1sldiKSMEcBQ6OXPM6ehOgWoucR00/LyKi1ucQq5JP gJIEhV4iCKfPHykoTiBcMlz8zqphcn6GgU71Ekv1GGmYxBWBLAj3tfmX4yiFh33p x25afA== =gfY0 -----END PGP SIGNATURE----- Merge tag 'pull-la-20220814' of https://gitlab.com/rth7680/qemu into staging Loongarch docs update # -----BEGIN PGP SIGNATURE----- # # iQFRBAABCgA7FiEEekgeeIaLTbaoWgXAZN846K9+IV8FAmL4/I8dHHJpY2hhcmQu # aGVuZGVyc29uQGxpbmFyby5vcmcACgkQZN846K9+IV/kCQf9HTiK6VSrbJXdOLQi # iGfXwZTcRDxG4brzj+GQ2/nuag2Dg9McADUxs1/3zlb965+CuQdfqtjSzgfxCjzX # iVvHq3wtCoOQZ5/T+XrFCaew0djkT6N/hBsa33oORXg5o5mAzCIFObuTMnusvjTu # VPXWe65fxTv3dsHZgjWekRZLu8Bn/anLypJxHzzFbXL3+RTKJ5u6GGVMn0DEcvEq # ooHYhETBEXmdKCbj2QpRmG1sldiKSMEcBQ6OXPM6ehOgWoucR00/LyKi1ucQq5JP # gJIEhV4iCKfPHykoTiBcMlz8zqphcn6GgU71Ekv1GGmYxBWBLAj3tfmX4yiFh33p # x25afA== # =gfY0 # -----END PGP SIGNATURE----- # gpg: Signature made Sun 14 Aug 2022 08:45:51 AM CDT # gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F # gpg: issuer "richard.henderson@linaro.org" # gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [ultimate] * tag 'pull-la-20220814' of https://gitlab.com/rth7680/qemu: docs/system/loongarch: Update the LoongArch document Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Richard Henderson
commit
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@ -15,27 +15,115 @@ The ``virt`` machine supports:
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- Gpex host bridge
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- Ls7a RTC device
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- Ls7a IOAPIC device
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- Ls7a ACPI device
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- ACPI GED device
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- Fw_cfg device
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- PCI/PCIe devices
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- Memory device
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- CPU device. Type: Loongson-3A5000.
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- CPU device. Type: la464-loongarch-cpu.
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CPU and machine Type
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--------------------
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The ``qemu-system-loongarch64`` provides emulation for virt
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machine. You can specify the machine type ``virt`` and
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cpu type ``Loongson-3A5000``.
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cpu type ``la464-loongarch-cpu``.
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Boot options
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------------
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Now the ``virt`` machine can run test program in ELF format and the
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method of compiling is in target/loongarch/README.
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We can boot the LoongArch virt machine by specifying the uefi bios,
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initrd, and linux kernel. And those source codes and binary files
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can be accessed by following steps.
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(1) booting command:
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.. code-block:: bash
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$ qemu-system-loongarch64 -machine virt -m 4G -cpu Loongson-3A5000 \
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-smp 1 -kernel hello -monitor none -display none \
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-chardev file,path=hello.out,id=output -serial chardev:output
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$ qemu-system-loongarch64 -machine virt -m 4G -cpu la464-loongarch-cpu \
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-smp 1 -bios QEMU_EFI.fd -kernel vmlinuz.efi -initrd initrd.img \
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-append "root=/dev/ram rdinit=/sbin/init consol e=ttyS0,115200" \
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--nographic
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Note: The running speed may be a little slow, as the performance of our
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qemu and uefi bios is not perfect, and it is being fixed.
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(2) cross compiler tools:
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.. code-block:: bash
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wget https://github.com/loongson/build-tools/releases/download/ \
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2022.05.29/loongarch64-clfs-5.0-cross-tools-gcc-full.tar.xz
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tar -vxf loongarch64-clfs-5.0-cross-tools-gcc-full.tar.xz
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(3) qemu compile configure option:
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.. code-block:: bash
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./configure --disable-rdma --disable-pvrdma --prefix=usr \
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--target-list="loongarch64-softmmu" \
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--disable-libiscsi --disable-libnfs --disable-libpmem \
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--disable-glusterfs --enable-libusb --enable-usb-redir \
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--disable-opengl --disable-xen --enable-spice \
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--enable-debug --disable-capstone --disable-kvm \
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--enable-profiler
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make
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(4) uefi bios source code and compile method:
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.. code-block:: bash
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git clone https://github.com/loongson/edk2-LoongarchVirt.git
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cd edk2-LoongarchVirt
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git submodule update --init
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export PATH=$YOUR_COMPILER_PATH/bin:$PATH
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export WORKSPACE=`pwd`
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export PACKAGES_PATH=$WORKSPACE/edk2-LoongarchVirt
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export GCC5_LOONGARCH64_PREFIX=loongarch64-unknown-linux-gnu-
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edk2-LoongarchVirt/edksetup.sh
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make -C edk2-LoongarchVirt/BaseTools
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build --buildtarget=DEBUG --tagname=GCC5 --arch=LOONGARCH64 --platform=OvmfPkg/LoongArchQemu/Loongson.dsc
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build --buildtarget=RELEASE --tagname=GCC5 --arch=LOONGARCH64 --platform=OvmfPkg/LoongArchQemu/Loongson.dsc
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The efi binary file path:
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Build/LoongArchQemu/DEBUG_GCC5/FV/QEMU_EFI.fd
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Build/LoongArchQemu/RELEASE_GCC5/FV/QEMU_EFI.fd
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(5) linux kernel source code and compile method:
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.. code-block:: bash
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git clone https://github.com/loongson/linux.git
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export PATH=$YOUR_COMPILER_PATH/bin:$PATH
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export LD_LIBRARY_PATH=$YOUR_COMPILER_PATH/lib:$LD_LIBRARY_PATH
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export LD_LIBRARY_PATH=$YOUR_COMPILER_PATH/loongarch64-unknown-linux-gnu/lib/:$LD_LIBRARY_PATH
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make ARCH=loongarch CROSS_COMPILE=loongarch64-unknown-linux-gnu- loongson3_defconfig
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make ARCH=loongarch CROSS_COMPILE=loongarch64-unknown-linux-gnu-
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make ARCH=loongarch CROSS_COMPILE=loongarch64-unknown-linux-gnu- install
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make ARCH=loongarch CROSS_COMPILE=loongarch64-unknown-linux-gnu- modules_install
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Note: The branch of linux source code is loongarch-next.
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(6) initrd file:
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You can use busybox tool and the linux modules to make a initrd file. Or you can access the
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binary files: https://github.com/yangxiaojuan-loongson/qemu-binary
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@ -11,54 +11,7 @@
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- System emulation
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Mainly emulate a virt 3A5000 board and ls7a bridge that is not exactly the same as the host.
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3A5000 support multiple interrupt cascading while here we just emulate the extioi interrupt
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cascading. LS7A1000 host bridge support multiple devices, such as sata, gmac, uart, rtc
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and so on. But we just realize the rtc. Others use the qemu common devices. It does not affect
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the general use. We also introduced the emulation of devices at docs/system/loongarch/virt.rst.
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This version only supports running binary files in ELF format, and does not depend on BIOS and kernel file.
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You can compile the test program with 'make & make check-tcg' and run the test case with the following command:
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1. Install LoongArch cross-tools on X86 machines.
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Download cross-tools.
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wget https://github.com/loongson/build-tools/releases/download/2022.05.29/loongarch64-clfs-5.0-cross-tools-gcc-full.tar.xz
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tar -vxf loongarch64-clfs-5.0-cross-tools-gcc-full.tar.xz -C /opt
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Config cross-tools env.
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. setenv.sh
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setenv.sh:
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#!/bin/sh
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set -x
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CC_PREFIX=/opt/cross-tools
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export PATH=$CC_PREFIX/bin:$PATH
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export LD_LIBRARY_PATH=$CC_PREFIX/lib:$LD_LIBRARY_PATH
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export LD_LIBRARY_PATH=$CC_PREFIX/loongarch64-unknown-linux-gnu/lib/:$LD_LIBRARY_PATH
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set +x
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2. Test tests/tcg/multiarch.
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./configure --disable-rdma --disable-pvrdma --prefix=/usr \
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--target-list="loongarch64-softmmu" \
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--disable-libiscsi --disable-libnfs --disable-libpmem \
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--disable-glusterfs --enable-libusb --enable-usb-redir \
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--disable-opengl --disable-xen --enable-spice --disable-werror \
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--enable-debug --disable-capstone --disable-kvm --enable-profiler
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cd build/
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make && make check-tcg
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or
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./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
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You can reference docs/system/loongarch/loongson3.rst to get the information about system emulation of LoongArch.
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- Linux-user emulation
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