RE: https://bonito.cafe/@linux0/116253109970856474

Bueno, ya hay drivers y de todo (Que no hice yo)... lo que necesito ahora es ver como reemplazo todo esto de forma casera.

Estos SoCs hacen el siguiente boot sequence.

Conceptualmente SPL carga el mismo código que U-Boot pero restringido, solo los drivers necesarios y una version recortada de esos drivers, todo para meterlo en la SRAM.

A mi parecer, son conceptualmente equivalentes estos terminos.

Al margen de eso, dejo estos artículos de utilidad.

Libreria F1C200S
Codigo pelado para Allwiners
Proyectos con F1C100s/F1C200s
F1C100s-info

#sunxi #linux #reverseengineering #devlog #drivers #lowlevel #hacking #os #firmware #soc #arm

Très fun cette session de jailbreak d'une liseuse #bookeen #muse #sunxi

Avec un peu d'aide de https://blog.soutade.fr/post/2015/03/game_over.html et http://blog.soutade.fr/post/2015/07/how-to-make-custom-rom-for-cybook-e-readers.html j'ai copié dropbear (via un serveur https://www.thc.org/segfault/ car wget ne savait que faire du http) et j'ai un ssh fonctionnel.

Un autre jour je le rend persistent et jouerais avec https://bitbucket.org/alexantunez/nolim-ebook-sdk/src/master/ pour afficher des choses sur le FrameBuffer...

#bookeen #recycle #sunxi #hack #jailbreak #root

good progress on porting #barebox on the pine64 (Allwinner #sunxi A64)

I've managed get a barebox image capable to boot #linux under 108KB... only 16 bytes left...

Sadly it fails very early during the boot 😢
I am not very familiar with the Linux kernel boot image. I am not sure where the entry point should go

Patch to implement an official support for OLIMEX Teres-A64 submitted in GNU Guix https://debbugs.gnu.org/cgi/bugreport.cgi?bug=62024

#olimex #teres #OSHW #FOSHW #FOSS #FOSSW #OSS #OpenSource #OpenSourceHardware #guix #gnu #gnuguix #a64 #sunxi #allwinner #nix

I am halting any kind of work on archlinux, parabola and pacman due to:
* Archlinux not giving a shit about aarch64 and actively blocks any kind of development for it
* ArchLinuxArm not replying to me and evidently removing my issue from their bug tracker about it
* Parabola, because Denis 'GNUToo' Carikli is keep kicking me from an IRC for no fucking reason
* Pacman is a trash package manager which source code should be put on a flash disk and thrown into a fire which would be a major help to address replication crisis in the computer science

The unfinished work that would provide a full compatibility of Parabola and ArchLinuxArm with all sunxi boards that currently builds a functional u-boot for OLIMEX Teres-A64 and can be easily adjusted to build other sunxi boards is provided on https://gist.github.com/Kreyren/97eef26fb6c92e3f6188b72b4dc2c26a

The preliminary ArchLinuxArm image for OLIMEX Teres-A64 which is using a hotfix with armbian u-boot, bootloader, kernel and kernel modules (due to lack of parabola's compatence to implement the required infrastructure) is provided on https://git.dotya.ml/kreyren/teres-a64-arch-preliminary

Fuck you arch and fuck you GNUToo

#ArchLinux #ArchLinuxArm #Parabola #pacman #FOSS #FLOSS #OSS #openSource #olimex #uboot #sunxi #teres #gnu