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That ARM requires "trusted" (LOL) firmware to boot at all makes me cringe. I'm not sure I "trust" that firmware.
by orangepurple 4y ago
That ARM requires "trusted" (LOL) firmware to boot at all makes me cringe. I'm not sure I "trust" that firmware.
- matrix12 4y agoCompared to the undocumented blobs RPI gear makes you load, the documentation of the Rock64 stuff is all open.
- CameronNemo 4y agoIt is just the name of the project. The TF-A project is 100% open source.
- ranma42 4y agoIts just the reference implementation of the EL3 "Secure world" monitor, and this is where some of the power management stuff is implemented according to ARM standards (e.g. PSCI). Technically I'm pretty sure you could do without it, but then you'd need to amend the devicetree and drivers to handle power state transitions. On the Rockchip SoC in question, boot security is disabled by default, so you can compile it yourself from source and run your own modified version if you want to.
- taffronaut 4y agoTrusted Firmware is an open governance project[1] and you build it from source. It's not 'required' by Arm. It's perfectly possible to boot without it, as demonstrated by most if not all Qualcomm CPUs. [1] www.trustedfirmware.org