Differences between revisions 57 and 59 (spanning 2 versions)
Revision 57 as of 2019-04-22 08:11:41
Size: 12788
Comment: Working u-boot has entered Debian unstable! Also update status of related patchsets, and drop older obsolete patchset
Revision 59 as of 2019-04-25 11:54:01
Size: 11410
Comment: Document state of wifi.
Deletions are marked like this. Additions are marked like this.
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 * [[https://box.redpill.dk/core_with_quirks/|Redpill]]  * [[https://box.redpill.dk/|Redpill]]
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  * Build: Boxer + qemu + multistrap + [[http://source.homebase.dk/box.git|custom scripts]]
  * Quirks: No bootloader (download separately). Includes nonfree package firmware-realtek.
  * Build: Boxer + qemu + multistrap + [[https://salsa.debian.org/tinker-team/box/|custom scripts]]
  * Quirks: Main image lack support for internal wifi - separate nonfree image includes support for it
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  * Build: debootstrap + [[https://github.com/igorpecovnik/lib|custom scripts]]   * Build: debootstrap + [[https://github.com/armbian/build|custom scripts]]
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 * [[ftp://staging.olimex.com/Allwinner_Images/A64-Teres/linux/armbian_experimental/|Olimex (Armbian)]]
  * Source: Ubuntu + Armbian + Olimex + Olimex-maintained forks of kernel and bootloader
  * Build: qemu-debootstrap + [[https://github.com/OLIMEX/build|custom scripts]]
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Buster and newer include kernel and arm64 userspace tools working out of the box,
but you will need to get or compile yourself a custom bootloader
.
Buster and newer include boot-loader, kernel and arm64 userspace tools working out of the box.
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==== Debian ====
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includes a patch from [[https://freenode.irclog.whitequark.org/linux-sunxi/2019-04-13#24411386|Vasily Khoruzhick a.k.a. anarsoul]]
to
support Teres I
except USB support,
includes a patch enabling support Teres I except USB support,
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==== anarsoul+Icenowy ====

One alternative approach is to get this [[https://salsa.debian.org/js/u-boot|fork of mainline]]:

{{{
git clone https://salsa.debian.org/js/u-boot
cd u-boot
}}}

It is a slight fork of the official Debian u-boot package
with an additional fix by Icenowy to enable USB support
(built-in keyboard is still failing for other reasons however)
and can therefore be built and used as such:

{{{
debuild -i -us -uc -b
sudo dpkg -i ../u-boot-sunxi_*.deb
sudo u-boot-install-sunxi64 /dev/sdx
}}}

The final binary package can also be downloaded:
 * [[https://box.redpill.dk/quirks/u-boot-sunxi.deb]]

You can skip the package build and instead compile u-boot files explicitly:

{{{
QUILT_PATCHES=debian/patches quilt push -a
BL31=/usr/lib/arm-trusted-firmware/sun50i_a64/bl31.bin make teres_i_defconfig
BL31=/usr/lib/arm-trusted-firmware/sun50i_a64/bl31.bin make
dd if=spl/sunxi-spl.bin of=/dev/sdx bs=8k seek=1
dd if=u-boot.itb of=/dev/sdx bs=8k seek=5
}}}

The final files can also be downloaded:
 * [[https://box.redpill.dk/quirks/sunxi-spl.bin]]
 * [[https://box.redpill.dk/quirks/u-boot.itb]]

==== Duwe ====

Another recent approach is to get this [[https://salsa.debian.org/js/u-boot/tree/wip/opensuse|fork of mainline]]:

{{{
git --branch wip/opensuse clone https://salsa.debian.org/js/u-boot
cd u-boot
}}}

It is a fork of the official Debian u-boot package
with rebased patches from an [[https://en.opensuse.org/HCL:Teres-I|openSUSE project]]
(enabling more but possibly but possibly unneeded or even wrong features including audo and video related drivers)
and can therefore be built same ways as above.
Pre-built u-boot binaries are [[https://box.redpill.dk/quirks/|available]].
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Since there is already an ubuntu system preinstalled on the teres,
you can simple download [[https://packages.debian.org/sid/all/debootstrap/download|debootstrap from unstable]]
and install it on ubuntu -
 it's only a shell script, so no dependency problems.

Then just follow the debootstrap chapter
Follow the debootstrap chapter
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To fix this we need to write a custom bootscript Simplest way to fix this is to install DebPkg:u-boot-menu which should work out of the box.

Alternatively you can try write a custom bootscript
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 (not covered yet) Requires non-free package DebPkg:firmware-realtek

A possibly race condition between wifi driver and mmc driver
is avoided by adding "rtl8723bs" to the file /etc/initramfs-tools/modules
and then regenerating initramfs with "update-initramfs -u".
This issue and workaround was found [[https://en.opensuse.org/HCL:Teres-I|here]].

Translation(s): none

DebianOn is an effort to document how to install, configure and use Debian on some specific hardware. Therefore potential buyers would know if that hardware is supported and owners would know how get the best out of that hardware.

The purpose is not to duplicate the Debian Official Documentation, but to document how to install Debian on some specific hardware.

If you need help to get Debian running on your hardware, please have a look at our user support channels where you may find specific channels (mailing list, IRC channel) dedicated to certain types of hardware.

Introduction

The Teres-I is a DIY open hardware laptop sold by Olimex. Olimex has stated that they intend the Teres-I to be very modular, allowing main boards built around different SoCs to be used interchangeably. However the only main board available at the moment is based on the Allwinner A64 SoC with 2GB RAM and 16GB eMMC internal storage. The CPU is supported by the arm64 architecture in debian. armhf should work too, but is untested.

The laptop is sold with linux (ubuntu + vendor supplied kernel) preinstalled. Source code is only partially available for the vendor kernel, which means that users of the preinstalled system are permanently stuck with an old version of linux. On the other hand since a linux system is available, no external computer and no cross-compilation is required to bootstrap a debian system.

While debian should run fine from the eMMC internal storage, most people install debian to an external microSD card (there is one slot available) to have both systems available. That's also what is described in this guide.

Overall Status

To get an overview of mainline kernel support, see the status matrix of the linux sunxi community.

Core Components

[ATTACH]

Boot Standard Kernel:

{OK} - since Buster

Detect mmc:

{OK}

Extra Features

CPU Frequency Scaling

{OK}

Hibernation

[?]

Sleep / Suspend

{OK} - since Linux 4.19

Xorg

{OK}

- OpenGL

[?]

- Resize-and-Rotate(randr)

[?]

Switch to External Screen

{X} - only with non-Mainline patches e.g. included in Olimex images

Mouse

- Built-in (Touchpad)

{OK}

Wireless/Wifi

X-(

Keyboard's Hotkeys

[?]

Legend :
{OK} = OK ; {X} Unsupported(No Driver) ; /!\ = Error (Couldn't get it working); [?] Unknown, Not Test ; [-] Not-applicable
{i} = Configuration Required; X-( = Only works with a non-free driver and or firmware

Installation

The laptop is sold as a kit for self-assembly. Here we assume that it is completely assembled and confirmed working correctly with the preinstalled system.

Image install

Several images exist for directly writing to your microSD card:

  • Redpill

    • Source: Debian
    • Build: Boxer + qemu + multistrap + custom scripts

    • Quirks: Main image lack support for internal wifi - separate nonfree image includes support for it
  • Armbian

    • Source: Debian (or Ubuntu) + Armbian + Armbian-maintained forks of kernel and bootloader
    • Build: debootstrap + custom scripts

  • Olimex (torrent link)

    • Source: Ubuntu + Olimex + Olimex-maintained forks of kernel and bootloader
    • Build: qemu-debootstrap + custom scripts

  • Olimex (Armbian)

    • Source: Ubuntu + Armbian + Olimex + Olimex-maintained forks of kernel and bootloader
    • Build: qemu-debootstrap + custom scripts

For links, further information and discussion see the dedicated thread at the olimex forum.

Manual install

Buster and newer include boot-loader, kernel and arm64 userspace tools working out of the box.

partitioning

There are no real requirements for disk layout other than that the bootloader is stored in an area close to the start of the disk but outside any partition. Most microSD cards already come with a compatible partition layout, so you only have to change the type of the existing partition from Windows to Linux and format it with your favorite filesystem.

device tree

Buster and newer ships with working device-tree (DT) file for the teres.

arm trusted firmware

Stage 2 of bootstrapping the hardware is ARM Trusted Firmware.

The debian package arm-trusted-firmware has support for Teres I using this binary:

/usr/lib/arm-trusted-firmware/sun50i_a64/bl31.bin

u-boot

Stage 1 and 3 of bootstrapping the hardware is U-boot.

mainline u-boot still (as of release 2019.04) misses a few bits including the sun50i-a64-teres-i.dtb device tree file with hints to enable the pwm driver (to get display backlight up).

The debian package u-boot-sunxi since release 2019.01+dfsg-5 includes a patch enabling support Teres I except USB support, which implies that the built-in USB keyboard is not usable until Linux has loaded.

The included patch is currently being proposed mainlined into u-boot.

Pre-built u-boot binaries are available.

rootfs

Follow the debootstrap chapter in the installation manual.

The default bootscript built into u-boot probably won't find all the files necessary to boot the system. Simplest way to fix this is to install u-boot-menu which should work out of the box.

Alternatively you can try write a custom bootscript and reformat it with mkimage from the package u-boot-tools:

mkimage -T script -d boot.txt /boot.scr

Here is a minimal example bootscript which assumes that /dtb, /vmlinuz and /initrd.gz are symlinks to the real files.

Using debian installer

There is no support in the official installer yet. However it might be possible to copy the arm64 installer files and a suitable device tree file onto a microSD card with a bootloader from external sources. If you try that approach, please share your experience.

Troubleshooting

If the screen remains blank or the system doesn't boot (is stuck in u-boot or initramfs) you can connect a serial console. The serial console is multiplexed with the headphone output. Instructions how to make or buy a proper connector are at the olimex forum.

Configuration

Display

  • (not covered yet)

Audio

  • (not covered yet)

Power Management

Sleep is supported since Linux 4.19.

WiFi

Requires non-free package firmware-realtek

A possibly race condition between wifi driver and mmc driver is avoided by adding "rtl8723bs" to the file /etc/initramfs-tools/modules and then regenerating initramfs with "update-initramfs -u". This issue and workaround was found here.


System Summary

lsusb

lsusb -v | grep -E '\<(Bus|iProduct|bDeviceClass|bDeviceProtocol)' 2>/dev/null

Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  bDeviceClass            9 Hub
  bDeviceProtocol         0 Full speed (or root) hub
  iProduct                2 SW USB2.0 'Open' Host Controller (OHCI) Driver
Bus 001 Device 005: ID 15ba:003c Olimex Ltd. 
  bDeviceClass            0 (Defined at Interface level)
  bDeviceProtocol         0 
  iProduct                2 TERES Keyboard+Touchpad
  (Bus Powered)
Bus 001 Device 003: ID 1908:2311 GEMBIRD 
  bDeviceClass          239 Miscellaneous Device
  bDeviceProtocol         1 Interface Association
  iProduct                2 USB2.0 PC CAMERA
      (Bus Powered)
  bDeviceClass          239 Miscellaneous Device
  bDeviceProtocol         1 Interface Association
  (Bus Powered)
Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. Hub
  bDeviceClass            9 Hub
  bDeviceProtocol         1 Single TT
  iProduct                1 USB2.0 Hub
  bDeviceClass            9 Hub
  bDeviceProtocol         0 Full speed (or root) hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  bDeviceClass            9 Hub
  bDeviceProtocol         0 Full speed (or root) hub
  iProduct                2 SW USB2.0 'Enhanced' Host Controller (EHCI) Driver
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  bDeviceClass            9 Hub
  bDeviceProtocol         0 Full speed (or root) hub
  iProduct                2 SW USB2.0 'Open' Host Controller (OHCI) Driver
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  bDeviceClass            9 Hub
  bDeviceProtocol         0 Full speed (or root) hub
  iProduct                2 SW USB2.0 'Enhanced' Host Controller (EHCI) Driver

Resources

Attachments

Some configuration files and sample outputs.

  • [get | view] (2018-04-07 09:22:19, 0.2 KB) [[attachment:boot.txt]]
 All files | Selected Files: delete move to page copy to page

Credits


CategoryLaptopComputer