Group: Hardware/Computers/e-readers

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Revision as of 11:31, 25 March 2018 by GNUtoo2 (talk | contribs) (→‎Being evaluated)
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Rationale

This page aims to document which existing ebook readers could become RYF certified without too much work. This is to see what the pros and the cons of liberating an existing e-reader versus making one.

RYF interpretation and resulting hardware choices

  • Devices without WiFi/Telephony network are old. This typically results in the device having very few RAM. Deactivating the WiFi chip in hardware might be a way to get around this issue. TODO: Look how to do it for WiFi chips commonly used in e-readers (for instance look if there is a disable pin).
  • If a hardware block is present but typically not used (for instance if a device has a GPU but doesn't use it because it uses an e-ink display which has a high latency) does it requires fully functional free software for it?

Existing hardware

Hardware Requirements

Basic requirements

  • No WiFi unless the Wifi chip works with free software.
  • Free boot software or the ability to easily port one to the e-reader.
    • If the code is signed, the system on a chip should have hardware flaws to enable users to bypass it. Some old I.MX are affected by that.
    • If there is no free software, enough documentation should be available as source code to enable porting an existing bootloader to it.
  • Enough RAM to run free software operating systems.

Requirements to do hardware support work faster

Since e-readers without WiFi or telephony network connection are old, the software they come with and the corresponding source code is also really old. To be able to use modern GNU/Linux or Android distribution on them, the source code needs to be used to add support for the device in recent hardware support software such as Linux or free software boot software like u-boot.


Software support that helps:

  • Most of the hardware of the device already supported by upstream projects (Linux and a free software bootloader).

Hardware features that helps:

  • Serial port that is easy to access
  • Booting the Bootloader from the USB or serial port
  • Ethernet (unlikely to be found on such devices)

Additional requirements

  • More RAM is better: Devices with not enough RAM may not be able to use modern FSDG distributions. Creating a specific distribution for such devices would require someone to maintain it.
  • Touchscreen: This enables to use most of the GNU/Linux applications and alleviate the need for custom software that works with buttons only.
  • CPU that is supported by FSDG distributions or the ability to support the CPU with very few maintenance cost.

Issues

  • Hardware availability: Older models are not manufactured anymore, and some vendors even went bankrupt.
  • Batteries: Batteries might need to be changed. The availability and compatibility of replacements were not researched yet. We need your help to do it.

Software

Operating systems and distributions

Distribution Architectures RAM Requirements work required to add a device Self hosting FSDG compliant
Parabola

Packages:

? (low)
  • Add bootloader package
 Yes Yes
GuixSD

Packages:

Requires (cross) compilation:

? (low)
  • Add bootloader package
 Yes Yes
LibreCMC

Packages:

Requires (cross) compilation:

? (lowest)
  • Add device target, bootloader and kernel configuration
 No Yes
Replicant

Requires (cross) compilation:

  • ARM (Which version? Which requirements?)
  • Not sure about other architectures
 424M for Android 6.0 (High)
  • Add device git repository, kernel, bootloader
 No Yes

e-ink displays

e-ink displays have a huge latency. I'm not sure if special software is needed to handle it or if Linux standard e-ink drivers are enough. Available software:

  • F-droid has a laucnher for e-ink displays

Reader software

  • Off the shelf free software pdf readers (check RAM usage)
  • FBReader
  • Calibre

Hardware

Candidates without WiFi

This list devices that:

  • can run free boot software, potentially with some work
  • don't have WiFi (or have a WiFi chip that works with free software)
Board Vendor Product SOC RAM Display Touchscreen developement facilities source code Ammount of work required for upstreaming Ammount of work for RYF Issues References
Story HD iRiver Story HD (Basic) NXP (formerly Freescale) I.MX508 128MB e-ink
  • TODO: Find how to boot the bootloader through USB on this device (boot modes + software to use)
  • TODO: Find the serial port
 iRiver source code for Story HD Basic:
  • Upstream to the devicetree (fast)
  • TODO: look if devices drivers are upstream
  • Port it to a bootloader (uboot or barebox)
  • TODO: Display type
  • GPU?
  • Video decoding offload?
  • Low ammount of RAM
? Sony PRS-600 NXP (formerly freescale) I.MX31 128MB e-ink ?
  • Finish porting the I.MX31 to devicetree
  • Port the device hardware support code to devicetree
  • TODO: look if devices drivers are upstream
  • Port the bootloader code to a standard bootloader (u-boot or Barebox)
  • TODO: Display type
  • GPU?
  • Video decoding offload?
  • Low ammount of RAM
EB600
  • Kobo eReader
 Samsung S3C2440AL-40 32MB e-ink
  • Serial port pads known
  • JTAG pinout known
 ?
  • Port the S3C2440AL to the devicetree
  • Port the devices to the devicetree
  • TODO: look if devices drivers are upstream
  • Port it to a bootloader (uboot or barebox)?
  • TODO: Bluetooth is an AW-BT105, check if it works with free software
  • Very low ammount of RAM

Candidates with WiFi

Deactivating the WiFi chip in hardware might be sufficent to make the devices RYF compliant

Board Vendor Product SOC RAM Display Touchscreen developement facilities source code Ammount of work required for upstreaming Ammount of work for RYF Issues References
A6 series
  • Jinke A6 series
 Samsung <?> (Arm9 400MHz) 128M ? ? ? ?
  • Has WiFi
Boox 60
  • Onyx Boox 60
  • Wolder Boox
 I.MX31 128M ? ? ? ? ?
  • Both devices have WiFi
Story HD iRiver Story HD (WiFi) NXP (formerly Freescale) I.MX508 128MB e-ink ? ? iRiver source code for Story HD WiFi:
  • Linux
  • Bootloader?
  • TODO: Find how to deactivate the WiFi chip
  • Has WiFi
  • Low ammount of RAM

Bad candidates

Board Vendor Product SOC RAM Display Touchscreen developement facilities source code Ammount of work required for upstreaming Ammount of work for RYF Issues References
Amazon Kindle Fire (first generation) OMAP4430 512M Standard (Tablet)
  • Incomplete support in upstream Linux
  • Unsigned bootloader, Supported in upstream u-boot
  • Display driver
  • Peripherals devicetree hardware configuration
  • Has WiFi
  • Has standard display and no free software GPU driver

Being evaluated

TODO: Import from OpenInkpot:

  • N510
  • N516
  • N518
  • PRS-500
  • Nook Color
  • Nook Simple Touch
  • Nook Tablet
  • PRS-700
  • SoriBOOK
  • Story
  • V2
  • V6
  • V8
Board Vendor Product SOC RAM Display Touchscreen developement facilities source code Ammount of work required for upstreaming Ammount of work for RYF Issues References
Bookeen Cybook Gen1 Probably not available: Proprietary OS
Bookeen Cybook Gen3 S3C2410 or S3C2440? 16M or 32M? e-ink ?
  • No WiFi
  • No Bluetooth
Bookeen Cybook Opus S3C2440 32M e-ink ?
  • No wireless
Bookeen Cybook Orizon
Bookeen Cybook Odyssey
Bookeen Cybook Muse
Bookeen Cybook Ocean
Bookeen Bookeen Saga
Kobo eReader WiFi NXP (formerly Freescale) i.MX357 e-ink
  • Serial ports pins known
  • Can boot from SD

Source code available:

  • Linux 2.6.28
  • Redboot
  • Port to the devicetree
  • Port to a recent free software bootloader
  • Deactivate WiFi
  • Has WiFi
  • Has bluetooth?
Kobo Wi-Fi SOC: NXP (formerly Freescale) i.MX357 128M e-ink
Kobo Touch e-ink
Kobo Mini e-ink
Kobo Glo e-ink
Kobo Aura NXP (formerly Freescale) i.MX507 e-ink
  • u-boot
Kobo Aura HD e-ink
Kobo Aura H2O e-ink
Kobo Glo HD e-ink
Kobo Touch 2.0 e-ink
Kobo Aura One e-ink
Kobo Aura Edition 2 e-ink
A9 series Jinke A9 series Samsung <?> (Arm9 400MHz) 128M ?
  • Has WiFi
E60 Samsung S5PC100A66 256M
  • Has WiFi
  • SoC bootloader signed?
PocketBook Pro 912 Samsung <?> (arm) 256M
  • WiFi
  • Bluetooth
  • 3G
iRiver Cover Story ? ?

?

EB100
  • Explay TXT.BOOK (1st & 2nd revision)
  • eRead STAReBOOK (STK 101)
  • Ganaxa GeR2
  • Orsio b721
  • Orsio b721+
  • PocketBook 301
  • Foxit eSlick
EB600
  • Coolreaders Cool-er
  • DittoBook DittoBook
  • Elonex 600eb
  • Explay TXT.BOOK (version 3)
  • Foxit eSlick Reader(newer)
  • Kobo eReader
  • Kolporter Info SA eClicto
  • Merlin HYEG0109B
  • Orsio b731
  • PocketBook 301+
  • Ritmix RBK-500
  • ViewSonic VEB612
FLEPia Fujitsu FLEPia
G5
  • Sibrary G5
  • Boeye Technology E510
  • Digma e500
  • Ergo Book 0501R Black
  • Other
 Samsung S3C2416
G6
  • Boeye Technology E600
  • Ergo Book 0603RK White
  • Qumo Libro
  • Qumo Libro II
  • Sibrary G6
  • Others
 Samsung S3C2416
G10
  • Boeye Technology E900
  • Digma q1000
  • Sibrary G10
  • Others
 Samsung S3C2416
G51
  • Sibrary G51
  • Qumo Colibri
  • G-mini magicbook M5
 Samsung S3C2416
Iliad
  • ARINC eFlyBook: Has WiFi
  • HixBooks HixReader: Has WiFi
  • iRex iLiad: Has WiFi
 PXA255 64M
Qisda ES600 / ES900:
  • Asus eeeReader DR-900: Has WiFi
  • Benq K60: Has WiFi
  • Bq Avant
  • Bq Avant XL
  • EGriver Touch
  • Icaruse Sense E650 and probably many more
  • Medion Oyo
  • Mr.Book ONext Touch & Read 001
  • Positivo Alfa
  • Promedia PO-541
  • Sagem Binder
  • Probably every eBook-Reader with Sipix display
 Samsung S3C2416 128M Linux, u-boot

See also

Building hardware

Considerations

Components

System on a chip and associated companion chips

Vendor Product Minumum quantities Available until RYF issues Linux upstream status Bootloader upstream status Companion chips
NXP I.MX 25 ? ? No issues Mostly complete Mostly complete? (bareobx?, u-boot?) ?
NXP I.MX 50 ? ? ?

Issues:

  • GPU
  • Video decoding offload

TODO:

  • Does the SDMA driver works with in-rom code?
 Mostly complete Mostly complete? (bareobx?, u-boot?) ?
NXP I.MX 51 ? ? ?

Issues:

  • GPU
  • Video decoding offload

Optional:

Mostly complete Mostly complete? (bareobx?, u-boot?) ?
NXP I.MX6Q ? ?

Issues:

  • GPU (WIP)
  • Video encoding/decoding offload processor

Optional:

  • SDMA should work with in-rom firmware
 Mostly complete Mostly complete? (bareobx?, u-boot?) ?
Allwinner A20 ? ?
  • GPU (WIP)
  • Video encoding/decoding offload processor (WIP)
 very few missing drivers ? ?
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