proxmox-mirrors/fwupd
1
0
Fork 0
mirror of https://git.proxmox.com/git/fwupd synced 2025-05-15 08:44:56 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity
10c3fd2ff9
fwupd/plugins/csr
History
Richard Hughes fbd8b5d325 Add fu_device_dump_firmware() 
Conceptually we were trying to stuff subtly different actions into one vfunc:

 * Read firmware from the device to update the verification checksums

 * Read a firmware blob from the device for debugging

For the first action we might want to mask out the sections of the flash with
serial numbers (so the verification hashes match the ones published on the LVFS)
and for the second we want just a raw ROM file from the hardware with no
pre-processing that we can compare against an external SPI dumper.

Split out ->dump_firmware to get the raw blob, and allow plugins to also
implement ->read_firmware() if they have to mask out specific offsets or remove
specific images from the FuFirmware container.

In the common case when masking is not required, fall back to using a 'binary'
FuFirmware automatically to make most plugins simpler.
2020-09-24 10:54:27 -05:00
..
data csr: Add a new plugin to add support for CSR "Driverless DFU" 2017-12-11 10:47:18 +00:00
csr-aiaiai.quirk Change the quirk file structure to be more efficient 2018-06-28 13:32:30 +01:00
fu-csr-device.c Add fu_device_dump_firmware() 2020-09-24 10:54:27 -05:00
fu-csr-device.h Add FuHidDevice abstraction 2020-03-19 17:02:07 +00:00
fu-plugin-csr.c Set the protocol per-device not per-plugin 2019-11-25 18:01:54 +00:00
meson.build Convert libfwupdprivate to a shared library libfwupdplugin 2019-11-27 11:32:43 +00:00
README.md trivial: Document the use of vendor-id in each plugin 2019-12-11 18:10:44 +00:00

README.md

CSR Support

Introduction

CSR is often called “driverless DFU” and is used only by BlueCore chips from Cambridge Silicon Radio (now owned by Qualcomm). The driverless just means that it's DFU like, and is routed over HID.

CSR is a ODM that makes most of the Bluetooth audio chips in vendor hardware. The hardware vendor can enable or disable features on the CSR microcontroller depending on licensing options (for instance echo cancellation), and there’s even a little virtual machine to do simple vendor-specific things.

All the CSR chips are updatable in-field, and most vendors issue updates to fix sound quality issues or to add support for new protocols or devices.

Firmware Format

The daemon will decompress the cabinet archive and extract a firmware blob in DFU file format.

This plugin supports the following protocol ID:

  • com.qualcomm.dfu

GUID Generation

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

  • USB\VID_0A12&PID_1337&REV_2520
  • USB\VID_0A12&PID_1337
  • USB\VID_0A12

Vendor ID Security

The vendor ID is set from the USB vendor, in this instance set to USB:0x0A12