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fwupd/plugins/system76-launch
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Richard Hughes 40cd18fa97 Allow using a per-device global percentage completion 
It's actually quite hard to build a front-end for fwupd at the moment
as you're never sure when the progress bar is going to zip back to 0%
and start all over again. Some plugins go 0..100% for write, others
go 0..100% for erase, then again for write, then *again* for verify.

By creating a helper object we can easily split up the progress of the
specific task, e.g. write_firmware().

We can encode at the plugin level "the erase takes 50% of the time, the
write takes 40% and the read takes 10%". This means we can have a
progressbar which goes up just once at a consistent speed.
2021-09-13 14:28:15 +01:00
..
fu-plugin-system76-launch.c trivial: reformat the whole tree to match new format 2021-08-24 11:18:40 -05:00
fu-system76-launch-device.c Allow using a per-device global percentage completion 2021-09-13 14:28:15 +01:00
fu-system76-launch-device.h trivial: reformat the whole tree to match new format 2021-08-24 11:18:40 -05:00
meson.build system76-launch: Prompt for unlock keypress if reset command is blocked 2021-02-25 12:37:24 -06:00
README.md trivial: update markdown for pre-commit style 2021-07-18 14:42:47 -05:00
system76-launch.quirk Simplify the quirk file format 2021-03-03 08:30:34 +00:00

README.md

System76 Launch

Introduction

This plugin is used to detach the System76 Launch device to DFU mode.

To switch to bootloader mode a USB packet must be written, as specified by the System76 EC protocol.

GUID Generation

These devices use the standard USB DeviceInstanceId values, e.g.

  • USB\VID_3384&PID_0001&REV_0001

Update Behavior

The device usually presents in runtime mode, but on detach re-enumerates with a different USB VID and PID in DFU mode. The device is then handled by the dfu plugin.

On DFU attach the device again re-enumerates back to the runtime mode.

For this reason the REPLUG_MATCH_GUID internal device flag is used so that the bootloader and runtime modes are treated as the same device.

Vendor ID Security

The vendor ID is set from the USB vendor, in this instance set to USB:0x3384

External Interface Access

This plugin requires read/write access to /dev/bus/usb.