Hi,

We at NVIDIA are evaluating Hafnium. During the initial investigation, we found out that the repository size (in terms of MB) is huge. This is mostly because of the "git submodules" used by the project. This is a great way to deliver Hafnium with its dependencies in one go.

But we think that the size can be trimmed by moving the toolchain, linux folder, googletest and dtc compiler out, leaving just the Hafnium code in the project. This way, companies like us can pick and choose instead of having to use everything. In a bid to ease the pain internally and only use the Hafnium code base we have crafted the following changes:

1. hafnium: support external projects (I10a07de3) * Gerrit Code Review (trustedfirmware.org)https://review.trustedfirmware.org/c/hafnium/hafnium/+/10142 2. hafnium: build with dtc and googletest out of tree (I057c9ad6) * Gerrit Code Review (trustedfirmware.org)https://review.trustedfirmware.org/c/hafnium/hafnium/+/10144 3. build: support external toolchain (Iafd029c1) * Gerrit Code Review (trustedfirmware.org)https://review.trustedfirmware.org/c/hafnium/hafnium/+/10145

This series does not have the patch to use an out of tree linux codebase. I assume these patches wont be acceptable in their current state, so would like to know how the community plans to handle this situation.

The code size is a real concern for us, as we already have copies of the dependencies in our codebase, so have no use for these duplicates.

Thanks.