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有专门做试吃的网站吗/国际新闻今日头条
admin2025/4/21 23:58:23【news】
简介有专门做试吃的网站吗,国际新闻今日头条,网站建设力洋,辽宁省建设科学研究院网站前篇文章介绍了fastmodel如何安装，但是fastmodel安装复杂，不适合linux初学者（绝对不是因为我还没画好能启动最小arm64系统的仿真图），所以这篇介绍qemu启动arm64系统。系统环境：ubuntu-14.04.4交叉编译工具链…
前篇文章介绍了fastmodel如何安装，但是fastmodel安装复杂，不适合linux初学者（绝对不是因为我还没画好能启动最小arm64系统的仿真图），所以这篇介绍qemu启动arm64系统。
系统环境：ubuntu-14.04.4
交叉编译工具链：aarch64-linux-gnu-
qemu安装
sudo apt-get install qemu安装完毕后，qemu-system-aarch64命令存在
$ which qemu-system-aarch64
/usr/bin/qemu-system-aarch64下载linux，编译arm64内核
1.下载
社区linux下载命令：
git clone https://github.com/torvalds/linux当然如果你无法访问或者下载非常慢，国内可以fork我的码云仓库：cbx/linux
此时下载命令：
git clone https://gitee.com/cuibixuan/linux.git2. 下载完毕切换到5.0分支（19年算起v5.0分支比较新），并编译
cd linux
git checkout v5.0
make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- defconfig
make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- Image -j8编译完毕，内核文件：arch/arm64/boot/Image
使用busybox制作简易文件系统
busybox下载地址：Index of /downloads
下载命令
wget https://busybox.net/downloads/busybox-1.31.0.tar.bz2解压
tar -jxvf busybox-1.31.0.tar.bz2设置交叉编译工具链以及Build static binary
cd busybox-1.31.0
make menuconfig-> Settings
[*] Build static binary (no shared libs)
(aarch64-linux-gnu-) Cross compiler prefix
编译安装
make && make install
编译完毕后busybox生成如下_install目录：
文件系统创建console
cd _install
mkdir dev
cd dev
sudo mknod console c 5 1
sudo mknod null c 1 3压缩成cpio.gz文件系统
find . | cpio -o -H newc |gzip > ../rootfs.cpio.gz启动arm64内核
可以参考我这样将Image，rootfs.cpio.gz和启动脚本qemu.sh放在同个目录
$ cat qemu.sh
qemu-system-aarch64 -machine virt,virtualization=true,gic-version=3 -nographic -m size=1024M -cpu cortex-a57 -smp 2 -kernel Image -initrd rootfs.cpio.gz --append "console=ttyAMA0 rdinit=/linuxrc"启动qemu
$ sh qemu.sh
[ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x411fd070]
[ 0.000000] Linux version 5.0.0 (cuibixuan@hulk-ubuntu) (gcc version 7.4.1 20181213 [linaro-7.4-2019.02 revision 56ec6f6b99cc167ff0c2f8e1a2eed33b1edc85d4] (Linaro GCC 7.4-2019.02)) #3 SMP PREEMPT Sun Aug 11 07:47:37 CST 2019
[ 0.000000] Machine model: linux,dummy-virt
[ 0.000000] efi: Getting EFI parameters from FDT:
[ 0.000000] efi: UEFI not found.
[ 0.000000] cma: Reserved 32 MiB at 0x000000007e000000
[ 0.000000] NUMA: No NUMA configuration found
[ 0.000000] NUMA: Faking a node at [mem 0x0000000040000000-0x000000007fffffff]
[ 0.000000] NUMA: NODE_DATA [mem 0x7ddf4840-0x7ddf5fff]
[ 0.000000] Zone ranges:
[ 0.000000] DMA32 [mem 0x0000000040000000-0x000000007fffffff]
[ 0.000000] Normal empty
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000040000000-0x000000007fffffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000040000000-0x000000007fffffff]
[ 0.000000] psci: probing for conduit method from DT.
[ 0.000000] psci: PSCIv0.2 detected in firmware.
[ 0.000000] psci: Using standard PSCI v0.2 function IDs
[ 0.000000] psci: Trusted OS migration not required
...
[ 2.099820] Loading compiled-in X.509 certificates
[ 2.112983] input: gpio-keys as /devices/platform/gpio-keys/input/input0
[ 2.117698] rtc-pl031 9010000.pl031: setting system clock to 2019-08-11T14:43:32 UTC (1565534612)
[ 2.119838] ALSA device list:
[ 2.120508] No soundcards found.
[ 2.123408] uart-pl011 9000000.pl011: no DMA platform data
[ 2.209212] Freeing unused kernel memory: 1408K
[ 2.214516] Run /linuxrc as init processcan't open /dev/tty2: No such file or directory
can't open /dev/tty3: No such file or directory
can't open /dev/tty4: No such file or directory
can't open /dev/tty2: No such file or directory
can't open /dev/tty4: No such file or directory
can't open /dev/tty3: No such file or directory
can't open /dev/tty2: No such file or directory
can't open /dev/tty4: No such file or directory
can't open /dev/tty3: No such file or directory/ #
/ #打印“can't open /dev/tty2: No such file or directory”说明文件系统没做好
解决办法
ln -sf /dev/null /dev/tty2
ln -sf /dev/null /dev/tty3
ln -sf /dev/null /dev/tty4
