2023-10-02 15:17:59 -04:00
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# Chrome OS RMA Shim Bootloader
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2023-10-04 02:56:57 -04:00
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This is a set of scripts for patching a Chrome OS RMA shim to serve as a bootloader for a standard Linux disto.
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## Current Development Roadmap:
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- ~~build the image automatically~~
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- ~~boot to a shell~~
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- ~~switch_root into an actual rootfs~~
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- ~~start X11 in the actual rootfs~~
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- ~~ui improvements in the bootloader~~
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2023-10-20 08:04:19 -04:00
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- ~~load all needed drivers~~
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- ~~autostart X11~~
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- ~~host repo for patched systemd packages~~
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- ~~use debootstrap to install debian~~
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- ~~prompt user for hostname and account when creating the rootfs~~
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2023-10-20 22:30:02 -04:00
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- ~~auto load iwlmvm~~
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- get wifi fully working
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- host prebuilt images
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- write detailed documentation
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2023-10-20 16:51:56 -04:00
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### Long Term Goals:
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- get zram to work
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- eliminate binwalk dependency
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- get audio to work
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2023-10-06 13:29:10 -04:00
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## Usage:
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### Prerequisites:
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- A separate Linux PC for the build process (preferably something Debian-based)
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- A USB that is at least 8GB in size
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- At least 20GB of free disk space
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- An x86-based Chromebook
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### Instructions:
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1. Grab a Chrome OS RMA Shim from somewhere. Most of them have already been leaked and aren't too difficult to find.
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2. Download a Chrome OS [recovery image](https://chromiumdash.appspot.com/serving-builds?deviceCategory=ChromeOS) for your board.
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3. Clone this repository and cd into it.
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4. Run `mkdir -p data/rootfs` to make a directory for the rootfs.
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5. Run `sudo ./build_rootfs.sh data/rootfs bookworm` to build the base rootfs.
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6. Run `sudo ./patch_rootfs.sh path_to_shim path_to_reco data/rootfs` to patch the base rootfs and add any needed drivers.
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7. Run `sudo ./build.sh image.bin path_to_shim data/rootfs` to generate a disk image at `image.bin`.
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8. Flash the generated image to a USB drive or SD card.
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2023-10-06 14:05:15 -04:00
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2023-10-20 08:18:09 -04:00
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Note that these instructions are currently incomplete.
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2023-10-06 14:05:15 -04:00
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## License:
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```
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ading2210/shimboot: Boot desktop Linux from a Chrome OS RMA shim.
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Copyright (C) 2023 ading2210
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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```
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