System76 Launch Configurable Keyboard with Open Source Code

Re:System76 Launch Configurable Keyboard with Open Source Code by tzarc on Thursday February 11, 2021 @01:34AM (#26098875)

QMK requires a RESET keycode to be added to your keymap in order to reboot into firmware update mode while it's running. Alternatively, depending on the configured options at compile-time, you can either hold ESC as you plug it in, or hold Space+B.

system76's launch requires the holding of ESC on bootup (well, top-left matrix position).

Under normal circumstances there's no "unattended update" functionality built in. Unsure if system76 has modified this behaviour to do so.

(Full disclosure, am a QMK maintainer)

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Re:System76 Launch Configurable Keyboard with Open Source Code by sigprof on Thursday February 11, 2021 @08:56AM (#26101522)

Unfortunately, system76 developers added exactly that functionality to their firmware: https://github.com/system76/qmk_firmware/commit/a1ab70c3a28a...

So it is possible to reboot into the firmware update mode just by sending some bytes to the raw HID interface. Apparently they did not think about the security aspect of this feature.

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Re:System76 Launch Configurable Keyboard with Open Source Code by jackpot51 on Thursday February 11, 2021 @09:18PM (#26110097)

Would you mind creating a GitHub issue to track this on? We may decide to change the behavior before production

EDIT: I have created an issue here: https://github.com/system76/launch/issues/17

We do not intend for the production firmware to include any software reset to bootloader functionality. It will require a physical keypress (Fn+ESC)

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