OpenBSD has radeondrm enabled on mips64, powerpc and arm64. It can initialize the board just fine without emulating x86, since KMS. Working 3D acceleration is another story.
OpenBSD even has (or had, build breaks often) packages for chromium browser on arm64 that were tested on this.
OpenBSD even has (or had, build breaks often) packages for chromium browser on arm64 that were tested on this.