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diff --git a/i18n/fr_FR/docs/hardware/c201.md b/i18n/fr_FR/docs/hardware/c201.md new file mode 100644 index 00000000..2fd9b973 --- /dev/null +++ b/i18n/fr_FR/docs/hardware/c201.md @@ -0,0 +1,183 @@ +--- +title: ASUS Chromebook C201 +x-toc-enable: true +... + +This is a Chromebook, using the Rockchip RK3288 SoC. It uses an ARM CPU, +and has free EC firmware (unlike some other laptops). More RK3288-based +laptops will be added to libreboot at a later date. + +Flashing instructions can be found at +[../install/\#flashrom](../install/#flashrom) + +Google's intent with CrOS devices +================================== + +CrOS (Chromium OS/Chrome OS) devices, such as Chromebooks, were not +designed with the intent of bringing more freedom to users. However, +they run with a lot of free software at the boot software and embedded +controller levels, since free software gives Google enough flexibility +to optimize various aspects such as boot time and most importantly, to +implement the CrOS security system, that involves various aspects of the +software. Google does hire a lot of Coreboot developers, who are +generally friendly to the free software movement and try to be good +members of the free software community, by contributing code back. + +CrOS devices are designed (from the factory) to actually coax the user +into using proprietary web services (SaaSS) that invade the user's +privacy (ChromeOS is literally just the Google Chrome browser when you +boot up, itself proprietary and comes with proprietary add-ons like +flash. It's only intended for SaaSS, not actual, real computing). +Google is even a member of the *PRISM* program, as outlined by Edward +Snowden. See notes about ChromeOS below. The libreboot project +recommends that the user replace the default *ChromeOS* with a +distribution that can be used in freedom, without invading the user's +privacy. + +We also use a similar argument for the MacBook and the ThinkPads that +are supported in libreboot. Those laptops are supported, in spite of +Apple and Lenovo, companies which are actually *hostile* to the free +software movement. + +Considerations about ChromeOS and free operating systems +======================================================== + +This laptop comes preinstalled (from the factory) with Google ChromeOS. +This is a GNU+Linux distribution, but it's not general purpose and it +comes with proprietary software. It's designed for SaaSS. Libreboot +recommends that users of this laptop replace it with another +distribution. + +Debian GNU+Linux +---------------- + +<https://wiki.debian.org/InstallingDebianOn/Asus/C201> shows how to +install Debian. + +Devuan GNU+Linux +---------------- + +<https://notabug.org/dimkr/devsus> produces bootable and installable +Devuan images. + +Parabola GNU+Linux +------------------ + +See: +<https://lists.gnu.org/archive/html/libreboot/2015-12/msg00026.html> + +In this discussion thread (on the old GNU Libreboot mailing lists), there are +instructions for installing Parabola on C201 and other rockchip chromebooks +supported by Libreboot. + +Caution: Video acceleration requires a non-free blob, software rendering can be used instead. +============================================================================================= + +The C201 has a Mali T GPU, which requires a non-free blob. A driver, +Tamil, was written, but its source code has not been released. The +developer has so-far [withheld +it](http://libv.livejournal.com/27461.html). Use software rendering to +avoid the blob instead. Most tasks can still be performed without video +acceleration, without any noticeable performance penalty. + +In practise, this means that certain things like games, blender and +GNOME shell (or other fancy desktops) won't work well. The libreboot +project recommends a lightweight desktop which does not need video +acceleration, such as *XFCE* or *LXDE*. + +As it is unlikely that Tamil will be released, the +[chai](https://notabug.org/cafe/chai) project is writing a driver as +well. Ask on IRC if you think you can contribute. + +Caution: WiFi requires a non-free blob, a USB dongle can be used instead. +========================================================================= + +These laptops have non-removeable (soldered on) M.2 Type 1216 card +with WiFi+Bluetooth, which requires non-free firmware to be loaded by +the Linux kernel in order to work. + +The libreboot project recommends using an external USB wifi dongle that +works with free software. See +[\#recommended\_wifi](./#recommended_wifi). + +There are 2 companies (endorsed by Free Software Foundation, under their +*Respects your Freedom* guidelines), that sell USB WiFi dongles +guaranteed to work with free software (i.e. linux-libre kernel): + +- [ThinkPenguin sells + them](https://www.thinkpenguin.com/gnu-linux/penguin-wireless-n-usb-adapter-gnu-linux-tpe-n150usb) + (company based in USA) +- [Tehnoetic sells + them](https://tehnoetic.com/tehnoetic-wireless-adapter-gnu-linux-libre-tet-n150) + (company based in Europe) + +These wifi dongles use the AR9271 (atheros) chipset, supported by the +free *ath9k\_htc* driver in the Linux kernel. They work in *linux-libre* +too. + +EC firmware is free software! +============================= + +It's free software. Google provides the source. Build scripts will be +added later, with EC sources provided in libreboot, and builds of the EC +firmware. + +This is unlike the other current libreboot laptops (Intel based). In +practise, you can (if you do without the video/wifi blobs, and replace +ChromeOS with a distribution that respects your freedom) be more free +when using one of these laptops. + +The libreboot FAQ briefly describes what an *EC* is: +[../../faq.md#firmware-ec](../../faq.md#firmware-ec) + +No microcode! +============= + +Unlike x86 (e.g. Intel/AMD) CPUs, ARM CPUs do not use microcode, not +even built in. On the Intel/AMD based libreboot systems, there is still +microcode in the CPU (not considered problematic by the FSF, provided +that it is reasonably trusted to not be malicious, since it's part of +the hardware and read-only), but we exclude microcode updates (volatile +updates which are uploaded at boot time by the boot firmware, if +present), which are proprietary software. + +On ARM CPUs, the instruction set is implemented in circuitry, without +microcode. + +Depthcharge payload +=================== + +These systems do not use the GRUB payload. Instead, they use a payload +called depthcharge, which is common on CrOS devices. This is free +software, maintained by Google. + +Flash chip write protection: the screw +====================================== + +It's next to the flash chip. Unscrew it, and the flash chip is +read-write. Screw it back in, and the flash chip is read-only. It's +called the screw. + +*The screw* is accessible by removing other screws and gently prying off +the upper shell, where the flash chip and the screw are then directly +accessible. User flashing from software is possible, without having to +externally re-flash, but the flash chip is SPI (SOIC-8 form factor) so +you can also externally re-flash if you want to. In practise, you only +need to externally re-flash if you brick the laptop; read +[../install/bbb\_setup.md](../install/bbb_setup.md) for an example +of how to set up an SPI programmer. + +Write protection is useful, because it prevents the firmware from being +re-flashed by any malicious software that might become executed on your +GNU+Linux system, as root. In other words, it can prevent a +firmware-level *evil maid* attack. It's possible to write protect on +all current libreboot systems, but CrOS devices make it easy. The screw +is such a stupidly simple idea, which all designs should implement. + +Copyright © 2015, 2017 Leah Rowe <info@minifree.org>\ + +Permission is granted to copy, distribute and/or modify this document +under the terms of the GNU Free Documentation License Version 1.3 or any later +version published by the Free Software Foundation +with no Invariant Sections, no Front Cover Texts, and no Back Cover Texts. +A copy of this license is found in [../fdl-1.3.md](../fdl-1.3.md) |