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Chrome OS RMA Shim Bootloader

This is a set of scripts for patching a Chrome OS RMA shim to serve as a bootloader for a standard Linux disto.

Current Development Roadmap:

  • build the image automatically
  • boot to a shell
  • switch_root into an actual rootfs
  • start X11 in the actual rootfs
  • ui improvements in the bootloader
  • load all needed drivers
  • autostart X11

Usage:

  1. Grab a Chrome OS RMA Shim from somewhere. Most of them have already been leaked and aren't too difficult to find.
  2. Download a Devuan live ISO. Run it inside a VM and install it to a disk image. Mount the disk image in the host. (Use losetup -P for this.)
  3. Run sudo DEBUG=1 ./build.sh. The rootfs_dir argument should point to where you mounted the rootfs in part 2.
  4. Flash the generated image to a USB drive or SD card.

License:

ading2210/shimboot: Boot desktop Linux from a Chrome OS RMA shim.
Copyright (C) 2023 ading2210

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.