Matthew Jackson
a7745ad931
LibreDrive::matches now requires ctx.kind == DiscKind::Unknown (the drive-prep dispatch) in addition to a bundled-profile hit. This keeps the firmware unlock from firing during the later content-keyed (Aacs/Css) dispatch on a profiled drive — the registry is walked at one spot per phase and matches() is the only filter.
freemkv-unlock-ld
The LibreDrive unlocker plugin for libfreemkv.
libfreemkv ships only the Unlocker trait + registry and stays firmware-clean.
This crate owns how MediaTek MT1959 drives are firmware-unlocked: the bundled
drive-profile database (profiles.json), the firmware blobs, the
WRITE_BUFFER / MODE SELECT upload, the unlock CDBs, and the variant-A / variant-B
handshake logic.
Usage
Register the unlocker once at process start, before any rip:
libfreemkv::register_unlocker(Box::new(freemkv_unlock_ld::LibreDrive::new()));
That single line is the whole plug. Any drive whose identity matches a bundled profile is firmware-unlocked at drive-prep; everything else falls through to libfreemkv's host-certificate AACS handshake.
The Unlocker contract
This crate is the LibreDrive unlocker — an implementation of libfreemkv's
Unlocker trait. The trait is a 3-method capability contract:
unlock_drive— put the drive into extended-access mode. The one required capability.read_volume_id— read the disc Volume ID directly, bypassing the AACS cert handshake.None→ libfreemkv falls back to the cert-based read. No-op default.set_max_read_speed— raise the drive to its maximum read speed. No-op default.
libfreemkv's AACS layer is the always-present baseline; it uses an unlocker's capabilities when one matches, and does the full cert handshake when none do. Remove this crate and libfreemkv still compiles and rips — every capability falls back to the OEM/baseline path.
Scope: RAM microcode only (#2), never the bootloader flash (#1)
freemkv uploads the RAM microcode to an already-bootloader-flashed drive.
The permanent bootloader flash (#1) is the drive owner's one-time manual
step; it is never automated by freemkv. This crate only performs the
non-persistent #2 step — the microcode lives in RAM and is gone on power
cycle.
Credits
LibreDrive was created by Mike Chen and the MakeMKV team. This crate builds on their work — our thanks and full credit to them for the LibreDrive capabilities.