qemu-system-arm搭建arm仿真环境

1.sudo  apt-get install qemu-system-arm

2.编译kernel:

下载个linux源码;比如linux-5.4

export ARCH=arm64
export CROSS_COPILE=aarch64-linux-gnu-
make defconfig
make menuconfig
make -j8 ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu-

3.准备rootfs:

qemu-img create -f raw disk.img 512M
mkfs -t ext4 ./disk.img

mkdir tmpfs
sudo mount -o loop ./disk.img tmpfs/  
sudo cp -r rootfs/* tmpfs/
sudo umount tmpfs

4.启动;

qemu-system-aarch64 -machine virt      
                    -cpu cortex-a53    
                    -nographic         
                    -smp 2             
                    -m 2048            
                    -kernel ./Image   
                    -append ;root=/dev/vda console=ttyAMA0; -hda ./disk.img