Raspi3 Usage

Rapsi3 almost works, but:

• reboot fails with kernel hang
• usb not work (qemu not support)
• network is based on usb, not work, nfs boot not work

Boot with graphic

Note: login console is there, but not accept input currently.

$ make boot V=1 G=1

Boot with serial

$ make boot V=1        // with pl011, by default

Boot debian

It is able to boot externl kernel, dtb, initrd and sdcard rootfs image from debian, please refer to Raspi3 debian:

$ mkdir debian
$ cd debian
$ wget -c https://people.debian.org/~stapelberg/raspberrypi3/2018-01-08/2018-01-08-raspberry-pi-3-buster-PREVIEW.img.xz
$ xz -d 2018-01-08-raspberry-pi-3-buster-PREVIEW.img.xz

$ fdisk -l 2018*.img
Disk 2018-01-08-raspberry-pi-3-buster-PREVIEW.img: 1.1 GiB, 1153433600 bytes, 2252800 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xac8dad98

Device                                        Boot  Start     End Sectors  Size Id Type
2018-01-08-raspberry-pi-3-buster-PREVIEW.img1        2048  614399  612352  299M  c W95 FAT32 (LBA)
2018-01-08-raspberry-pi-3-buster-PREVIEW.img2      614400 2252799 1638400  800M 83 Linux

$ sudo mkdir /mnt/debian
$ sudo mount -o offset=$((2048*512)) /mnt/debian/

$ sudo cp /mnt/debian/vmlinuz-4.14.0-3-arm64 .
$ sudo cp /mnt/debian/initrd.img-4.14.0-3-arm64 .
$ sudo cp /mnt/debian/bcm2837-rpi-3-b.dtb .

$ make boot KIMAGE=$PWD/debian/vmlinuz-4.14.0-3-arm64 INITRD=$PWD/debian/initrd.img-4.14.0-3-arm64 DTB=$PWD/debian/bcm2837-rpi-3-b.dtb \
ROOTDEV=/dev/mmcblk0p2 ROOTFS=$PWD/debian/2018-01-08-raspberry-pi-3-buster-PREVIEW.img V=1

rpi3 login: root
password:                    <------ input raspberry as passwd

root@rpi3:~# cat /etc/issue
Debian GNU/Linux buster/sid \n \l

root@rpi3:~# uname -a
Linux rpi3 4.14.0-3-arm64 #1 SMP Debian 4.14.12-2 (2018-01-06) aarch64 GNU/Linux

Boot ubuntu

Here introduces how to download and boot ubuntu from docker image, the following steps are done in host system, except the one explicitly said in Linux Lab.

Check official arm64 ubuntu image:

$ docker search arm64v8 | grep ubuntu
arm64v8/ubuntu Ubuntu is a Debian-based Linux operating system  25

Download and extract the rootfs out to prebuilt/fullroot/tmp:

$ cd $(path-to)/linux-lab
$ tools/root/docker/extract.sh arm64v8/ubuntu aarch64
LOG: Pulling arm64v8/ubuntu
Using default tag: latest
latest: Pulling from arm64v8/ubuntu
745b76626a20: Pulling fs layer
6ce7a8922cb8: Download complete
565a1332f5cd: Download complete
...
LOG: Running arm64v8/ubuntu
LOG: Creating temporary rootdir: ...linux-lab/prebuilt/fullroot/tmp/arm64v8-ubuntu
LOG: Extract docker image to ...linux-lab/prebuilt/fullroot/tmp/arm64v8-ubuntu
[sudo] password for falcon:
LOG: Removing docker container
8c15a9d30b402e46f63227b6286d54c6afdd80d9193c2ee28684395830fef042
LOG: Chroot into new rootfs
Linux ubuntu 4.4.0-148-generic #174-Ubuntu SMP Tue May 7 12:20:14 UTC 2019 aarch64 aarch64 aarch64 GNU/Linux
Ubuntu 18.04.2 LTS \n \l

Or pull it and then extract:

$ docker pull arm64v8/ubuntu
$ PULL=0 tools/root/docker/extract.sh arm64v8/ubuntu aarch64

Use it with docker:

$ sudo apt-get install qemu-user-static
$ $ docker run -it -v /usr/bin/qemu-aarch64-static:/usr/bin/qemu-aarch64-static arm64v8/ubuntu
root@bceb61278159:/# uname -a
Linux bceb61278159 4.4.0-148-generic #174-Ubuntu SMP Tue May 7 12:20:14 UTC 2019 aarch64 aarch64 aarch64 GNU/Linux
root@bceb61278159:/# cat /etc/issue
Ubuntu 18.04.2 LTS \n \l

Use it with chroot:

$ tools/root/docker/chroot.sh arm64v8/ubuntu
LOG: Chroot into ...linux-lab/prebuilt/fullroot/tmp/arm64v8-ubuntu
root@ubuntu:/#

Boot it in Linux Lab, please launch it at fist:

$ make boot ROOTFS=$PWD/prebuilt/fullroot/tmp/arm64v8-ubuntu
hctosys: unable to open rtc device (rtc0)
EXT4-fs (vda): mounting ext2 file system using the ext4 subsystem
EXT4-fs (vda): mounted filesystem without journal. Opts: (null)
VFS: Mounted root (ext2 filesystem) on device 254:0.
devtmpfs: mounted
Freeing unused kernel memory: 832K
Run /sbin/init as init process
Run /etc/init as init process
Run /bin/init as init process
Run /bin/sh as init process
/bin/sh: 0: can't access tty; job control turned off
# uname -a
Linux (none) 5.1.0-dirty #13 SMP Tue May 28 02:17:08 UTC 2019 aarch64 aarch64 aarch64 GNU/Linux

Similarly, boot another tinylab/arm64v8-ubuntu docker image, it is a more powerful ubuntu system, please download and extract it at first:

$ make boot ROOTFS=$PWD/prebuilt/fullroot/tmp/tinylab-arm64-ubuntu
...
[  OK  ] Started Set console scheme.
[  OK  ] Created slice system-getty.slice.
[  OK  ] Started Getty on tty1.
[  OK  ] Reached target Login Prompts.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.

Ubuntu 18.04.2 LTS localhost.localdomain ttyAMA0

localhost login: root
Password:                                 <------ input root as password
Last login: Wed May 15 04:58:46 UTC 2019 on ttyAMA0

Welcome to Ubuntu 18.04.2 LTS (GNU/Linux 5.1.0-dirty aarch64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage


root@localhost:~#
root@localhost:~#
root@localhost:~# cat /etc/issue
Ubuntu 18.04.2 LTS \n \l

root@localhost:~# uname -a
Linux localhost.localdomain 5.1.0-dirty #13 SMP Tue May 28 02:17:08 UTC 2019 aarch64 aarch64 aarch64 GNU/Linux

Since raspi3 qemu not support network yet, please use chroot or docker to run the rootfs and install necessary packages if required.

Boot buildroot

Buildroot is able to compile a whole system for raspi3, include kernel image, dtb, initrd and sdcard image, just configure, build and boot:

$ find buildroot/ -name "*pi3*defconfig"
buildroot/configs/raspberrypi3_defconfig
buildroot/configs/raspberrypi3_qt5we_defconfig
buildroot/configs/raspberrypi3_64_defconfig

$ make root-defconfig RCFG=raspberrypi3_64_defconfig V=1
$ make root-menuconfig
$ make root

$ make boot KIMAGE=$PWD/build/aarch64/buildroot-2019.02.2-cortex-a53/images/Image DTB=$PWD/build/aarch64/buildroot-2019.02.2-cortex-a53/images/bcm2710-rpi-3-b.dtb INITRD=$PWD/build/aarch64/buildroot-2019.02.2-cortex-a53/images/rootfs.cpio.gz V=1

References

• Qemu raspi3 support
• Raspi3 hardware spec
• Raspi3 linux kernel
• Raspi3 debian
• Raspbian
• Ubuntu rootfs
• Ubuntu docker image
• Debian rootfs
• Debian docker image
• Reproducible, snapshot-based Debian rootfs builder
• buildroot/configs/raspberrypi3_64_defconfig