尝试向树莓派3B引入Drbian 9 arm64-PART 2

Stage 1：使用debootstrap制作64位组件

尽管内核工作于64位模式，但系统大多数组件仍旧处于32位模式下。
我们的目标是引入Debian 9 arm64，自然会想到使用debootstrap。
在树莓派上，给一张SD卡分两个区：

• 一个在前面，大小100M左右，使用mkfs.vfat，类型为W95 FAT32
• 一个占用后面所有的空间，视/boot/cmdline.txt中rootfstype的设置选择分区格式

然后（在树莓派上）开干：
sudo debootstrap --verbose --arch=arm64 stretch . https://mirrors.ustc.edu.cn/debian/
编辑sources.list：

deb http://mirrors.ustc.edu.cn/debian/ stretch main
deb http://mirrors.ustc.edu.cn/archive.raspberrypi.org/ jessie main non-free contrib

apt.conf：
APT::Default-Release "stretch";
Chroot和之前的准备工作：

sudo mount -t proc proc proc
sudo mount -t sysfs sysfs sys
sudo mount -o bind /dev dev
sudo chroot .

视具体情况安装软件包。

apt install hostapd wpasupplicant udhcpd screen dnsmasq sudo openssh-server firmware-brcm80211 ...

• firmware-brcm80211：使系统识别树莓派3板载网卡
• hostapd,udhcpd,dnsmasq：启动AP必备
• wpasupplicant：用于连接Wifi热点
• openssh-server：SSH服务器
• sudo,screen：这两个想必大家都听说过吧……

退出Chroot环境，复制配置文件及其它核心组件，例如：

/boot
/lib/modules
/etc/passwd
/etc/shadow
/etc/sudoers
/etc/hostapd
/etc/default
/etc/udhcpd.conf
/etc/udev/
/etc/dnsmasq.conf
...

成功启动。
但是有烦人的提示（如果没有就无视掉吧……）：
ERROR: ld.so: object '/usr/lib/arm-linux-gnueabihf/libarmmem.so' from /etc/ld.so.preload cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
解决方案显而易见：

sudo mv /etc/ld.so.preload /etc/ld.so.preload.bak
sudo touch /etc/ld.so.preload

如果你使用了一张新的SD卡，记得编辑/etc/fstab！

Stage 2：站稳脚跟

*执行apt-get update，提示：

Ign:1 https://mirrors.ustc.edu.cn/debian stretch InRelease
Get:2 https://mirrors.ustc.edu.cn/archive.raspberrypi.org jessie InRelease [22.9 kB]
Hit:2 https://mirrors.ustc.edu.cn/archive.raspberrypi.org jessie InRelease
Get:3 https://mirrors.ustc.edu.cn/debian stretch Release [113 kB]
Hit:3 https://mirrors.ustc.edu.cn/debian stretch Release
Can't locate Storable.pm in @INC (you may need to install the Storable module) (@INC contains: /etc/perl /usr/local/lib/aarch64-linux-gnu/perl/5.24.1 /usr/local/share/perl/5.24.1 /usr/lib/aarch64-linux-gnu/perl5/5.24 /usr/share/perl5 /usr/lib/aarch64-linux-gnu/perl/5.24 /usr/share/perl/5.24 /usr/local/lib/site_perl /usr/lib/aarch64-linux-gnu/perl-base) at /usr/bin/apt-show-versions line 37.
BEGIN failed--compilation aborted at /usr/bin/apt-show-versions line 37.
Reading package lists... Done
N: Skipping acquire of configured file 'main/binary-arm64/Packages' as repository 'https://mirrors.ustc.edu.cn/archive.raspberrypi.org jessie InRelease' doesn't support architecture 'arm64'
N: Skipping acquire of configured file 'non-free/binary-arm64/Packages' as repository 'https://mirrors.ustc.edu.cn/archive.raspberrypi.org jessie InRelease' doesn't support architecture 'arm64'
N: Skipping acquire of configured file 'contrib/binary-arm64/Packages' as repository 'https://mirrors.ustc.edu.cn/archive.raspberrypi.org jessie InRelease' doesn't support architecture 'arm64'
N: Skipping acquire of configured file 'ui/binary-arm64/Packages' as repository 'https://mirrors.ustc.edu.cn/archive.raspberrypi.org jessie InRelease' doesn't support architecture 'arm64'
E: Problem executing scripts APT::Update::Post-Invoke-Success 'test -x /usr/bin/apt-show-versions || exit 0 ; apt-show-versions -i'
E: Sub-process returned an error code

笔者尝试执行sudo apt-get install apt-show-versions，问题解决。

小结

路曼曼其修远兮，吾将上下而求索。

目前整个系统仅仅只是能用，还有许多不完美的地方。

更新

4.12的内核可以使树莓派工作得更好，ACT灯和VCHI将正常工作。