又花了半天的时间终于搞完了,实现了半自动化搭建环境.废话少说,开始了!!

主要思路:在Docker容器中交叉编译linux-3.16,busybox-1.20.2.在主机中制作根目录并搭建QEMU模拟硬件运行环境.

Docker镜像制作脚本Dockerfile如下:

FROM ubuntu:16.04
WORKDIR /root/
RUN apt-get update && apt-get install bc xz-utils bzip2 wget make gcc gcc-4.9-arm-linux-gnueabi vim -y
ADD busybox-1.20.2.tar.bz2 ./
ADD linux-3.16.tar.xz ./
COPY compile.sh mkvm.sh ./

由脚本可知需要在buid content(Dockerfile文件所在的目录)中准备四个文件(下载连接 busybox,linux):

## 源文件
busybox-1.20.2.tar.bz2 
linux-3.16.tar.xz

## shell 脚本
compile.sh // 编译源文件
mkvm.sh // 从编译完成的文件中收集QEMU运行所需要的文件,并打包成vm.tar.bz2

#!/bin/bash
# fileName: compile.sh
# Date: Sun 17 Jun 2018 05:12:05 PM CST
# Author: light

# link arm-gcc
[ ! -f /usr/bin/arm-linux-gnueabi-gcc ] && ln -s /usr/bin/arm-linux-gnueabi-gcc-4.9 /usr/bin/arm-linux-gnueabi-gcc

# compile busybox
cd /root/busybox-1.20.2/
[ ! -f include/.libbb.h ] && cp include/libbb.h include/.libbb.h
sed  '43i #include<sys/resource.h>' include/.libbb.h > include/libbb.h # why? 请参考我的文章 交叉编译busybox

make defconfig
make CROSS_COMPILE=arm-linux-gnueabi-
make install CROSS_COMPILE=arm-linux-gnueabi-

# compile kernel
cd /root/linux-3.16/
make CROSS_COMPILE=arm-linux-gnueabi- ARCH=arm vexpress_defconfig
make CROSS_COMPILE=arm-linux-gnueabi- ARCH=arm

#!/bin/bash
# fileName: mkvm.sh
# Date: Sun 17 Jun 2018 05:13:40 PM CST
# Author: light

# collect files to rootfs/
cd /root/
mkdir -p vm/rootfs/{proc,etc/init.d,sys,tmp,root,var,mnt,lib,dev}
cp busybox-1.20.2/_install/* vm/rootfs/ -r
cp busybox-1.20.2/examples/bootfloppy/etc/* vm/rootfs/etc/ -r
cp /usr/arm-linux-gnueabi/lib/* vm/rootfs/lib/ -Pr 


dd if=/dev/zero of=a9rootfs.ext3 bs=1M count=32
mkfs.ext3 a9rootfs.ext3
mv a9rootfs.ext3 vm/a9rootfs.ext3

cp linux-3.16/arch/arm/boot/dts/vexpress-v2p-ca9.dtb vm/ 
cp linux-3.16/arch/arm/boot/zImage vm/ 

# generate boot.sh mkrootfs.sh
cat > vm/boot.sh << EOF
qemu-system-arm -M vexpress-a9 -m 512M -kernel  ./zImage -dtb ./vexpress-v2p-ca9.dtb -nographic -append "root=/dev/mmcblk0  console=ttyAMA0" -sd a9rootfs.ext3
EOF

cat > vm/mkrootfs.sh << EOF
sudo mknod ./rootfs/dev/tty1 c 4 1
sudo mknod ./rootfs/dev/tty2 c 4 2
sudo mknod ./rootfs/dev/tty3 c 4 3
sudo mknod ./rootfs/dev/tty4 c 4 4

mkdir tmpfs
sudo mount -t ext3 a9rootfs.ext3 tmpfs/ -o loop
sudo cp rootfs/* tmpfs/ -r
sudo umount tmpfs/
EOF

# tar
tar cjf vm.tar.bz2 vm/ 
rm -fr vm

此时build content中有五个文件:

light@light-Inspiron-3559 ~/Docker/arm $ ls
busybox-1.20.2.tar.bz2  compile.sh  Dockerfile  linux-3.16.tar.xz  mkvm.sh

build一下,"镜子"就做好了:

light@light-Inspiron-3559 ~/Docker/arm $ docker build -t arm-compil ./
light@light-Inspiron-3559 ~/Docker/arm $ docker images | grep arm
arm-compile         latest              1bb5ddf21eca        About an hour ago   929MB

足足有1G....^.^```

构建容器:

light@light-Inspiron-3559 ~/Docker/arm $ docker run --name arm -ti arm-compil /bin/bash

编译源文件:

root@5845a78f3cc9:~# bash compile.sh 

从编译完成的文件中收集QEMU运行所需要的文件,并打包成vm.tar.bz2:

root@5845a78f3cc9:~# bash mkvm.sh 
32+0 records in
32+0 records out
33554432 bytes (34 MB, 32 MiB) copied, 0.020181 s, 1.7 GB/s
mke2fs 1.42.13 (17-May-2015)
Discarding device blocks: done                            
Creating filesystem with 32768 1k blocks and 8192 inodes
Filesystem UUID: 821b2aaf-7ce0-498b-b5f4-8d47824d68ec
Superblock backups stored on blocks: 
	8193, 24577

Allocating group tables: done                            
Writing inode tables: done                            
Creating journal (4096 blocks): done
Writing superblocks and filesystem accounting information: done

root@5845a78f3cc9:~# ls vm.tar.bz2 
vm.tar.bz2

从容器中导出文件至host:

light@light-Inspiron-3559 ~/Docker/arm $ docker cp arm:/root/vm.tar.bz2 ./
light@light-Inspiron-3559 ~/Docker/arm $ ls vm.tar.bz2 
vm.tar.bz2

解包,切换文件,构建根文件:

light@light-Inspiron-3559 ~/Docker/arm $ tar xjf vm.tar.bz2 ; cd vm
light@light-Inspiron-3559 ~/Docker/arm/vm $ bash mkrootfs.sh 
[sudo] password for light: 

启动:

light@light-Inspiron-3559 ~/Docker/arm/vm $ bash boot.sh 

/ # cat /proc/cpuinfo 
processor	: 0
model name	: ARMv7 Processor rev 0 (v7l)
Features	: swp half thumb fastmult vfp edsp neon vfpv3 tls vfpd32 
CPU implementer	: 0x41
CPU architecture: 7
CPU variant	: 0x0
CPU part	: 0xc09
CPU revision	: 0

Hardware	: ARM-Versatile Express
Revision	: 0000
Serial		: 0000000000000000
/ # 

相关文件已上传至github.

参考文章:

从零使用qemu模拟器搭建arm运行环境

使用qemu模拟器搭建arm运行环境

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修改排版问题 Sun Jun 17 19:22:32 CST 2018

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添加相关文件github连接 Sun Jun 17 19:52:55 CST 2018