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# LoongArch QEMU virt platform
## Overview
LoongArch QEMU virt is a generic platform that does not require any actual hardware.
The minimum required QEMU version is [8.1](https://gitlab.com/qemu-project/qemu/-/tags), the minimum required GCC version is [GCC13](https://gcc.gnu.org/gcc-13/), the minimum required Binutils version is [2.40](https://ftp.gnu.org/gnu/binutils/).
## Prepare (X86 Linux Environment)
### Fedora39 and higher
Install LoongArch64 cross compiler, LoongArch system QEMU.
yum install gcc-loongarch64-linux-gnu
yum install qemu-system-loongarch64
### Others X86 OS ENV
#### Configure cross-tools
**Download:**
wget https://github.com/loongson/build-tools/releases/download/2023.08.08/x86_64-cross-tools-loongarch64-binutils_2.41-gcc_13.2.0.tar.xz
**Configure the cross-tools environment:**
mkdir /opt/loongarch64_cross-toolchain/
tar -vxf x86_64-cross-tools-loongarch64-binutils_2.41-gcc_13.2.0.tar.xz -C /opt/loongarch64_cross-toolchain/
export PATH=/opt/loongarch64_cross-toolchain/cross-tools/bin:$PATH
Note: Please obtain [the latest cross-compilation](https://github.com/loongson/build-tools) toolchains.
#### Build QEMU
git clone https://gitlab.com/qemu-project/qemu.git
Note: Please refer to QEMU compilation rules, located in qemu/doc/system/loongarch/virt.rst.
## Build LoongArch QEMU virtual machine firmware
#### Get edk2 resouces
git clone --recurse-submodule https://github.com/tianocore/edk2.git
#### Building LoongArch QEMU virt FW with GCC
export WORKSPACE=`pwd`
export GCC5_LOONGARCH64_PREFIX=loongarch64-unknown-linux-gnu-
export PACKAGES_PATH=$WORKSPACE/edk2
export EDK_TOOLS_PATH=$WORKSPACE/edk2/BaseTools
source edk2/edksetup.sh --reconfig
make -C edk2/BaseTools
source edk2/edksetup.sh BaseTools
build -b RELEASE -t GCC5 -a LOONGARCH64 -p OvmfPkg/LoongArchVirt/LoongArchVirtQemu.dsc
## Test LoongArch QEMU virtual machine firmware
qemu-system-loongarch64 \
-m 4G \
-M virt \
-smp 2 \
-cpu la464 \
-bios Build/LoongArchVirtQemu/RELEASE_GCC5/FV/QEMU_EFI.fd \
-serial stdio
## Test LoongArch QEMU virtual machine OS
* Download ArchLinux QCOW [images](https://mirrors.pku.edu.cn/loongarch/archlinux/images) for LoongArch.
* [Running LoongArch ArchLinux on virtual machine](https://mirrors.pku.edu.cn/loongarch/archlinux/images/README.html).
* Download openEuler 22.03 LTS QCOW [images](https://mirrors.nju.edu.cn/openeuler/openEuler-22.03-LTS/virtual_machine_img/loongarch64/openEuler-22.03-LTS-LoongArch-loongarch64.qcow2.xz) for LoongArch.
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