add support for rockchip USB MSC

[svenrademakers]

Is your feature request related to a problem? Please describe.
The Turing Pi can expose a given node as a mass storage device over USB. executing tpi advanced msd --node 1 will reboot node 1 and load the MSD driver for that given node. Currently, only Raspberry Pi's are supported. The goal of this ticket is to add support for rockchip devices (RK1).

Describe the solution you'd like
The rockusb driver, created by one of our contributors, is already present in the current firmware and can expose an MSD block device. The work left to do is to update the bmcd implementation to use this driver rather than the rockusb rust backend.

Describe alternatives you've considered

na

Additional context
current rust implementation

[bhuism]

Can this potentially work for other rockchip based sbc's? (Like the mixtile) Or is it firmware dependent for instance.

[svenrademakers]

Potentially yes. The rockusb driver talks a proprietary rockusb protocol. It is dependent on the loader implementation of your device how good or not its supported

[gjrtimmer]

@svenrademakers does the msd work with RK1 and also the NVMe ?

[gjrtimmer]

I saw there where several commits related to have the msd work for the RK1. Would it be possible to have a new release like 2.0.6 so people who have issues with the RK1 can use the msd to fix there modules.

[svenrademakers]

Hi @gjrtimmer, we are preparing some other features for the next release. However, the main branch is pretty stable, so it should not be a problem to run a latest build on your turing pi.

we load the rockusb driver onto the RK1 in maskrom mode. As far as i can tell it does not support NVME. You would first need to write a bootloader that can interact with a NVME drive to make something like this work.