Carlo Caione <carlo.caione@xxxxxxxxx> writes: > this problem came up while I was trying to solve the problem: how do I > query the U-Boot version from userspace on an ARM platform so that I > can upgrade it when necessary. > > One possible solution (adopted also from ChromeOS IIRC) is basically to > export the firmware information into the DT. I think that this could be > a nice and elegant solution (the firmware itself is in charge to add > the information to the DTB before passing it down to the kernel). > > Is this allowed by the DT specs? Is there already any bindings around > to carry this kind of information? > > (Or maybe is there some other elegant solution already in place for > this exact problem) For OpenPOWER systems, we have some device tree bindings for an 'ibm,firmware-versions' node that lists firmware components and the versions of which we believe we booted with. If other platforms are interested in a consistent binding, I'd be happy to work with others on it, it'd probably make sense to have something consistent across platforms. -- Stewart Smith OPAL Architect, IBM. -- To unsubscribe from this list: send the line "unsubscribe devicetree-spec" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
