With the increasing popularity of ARM64/AArch64 systems, from the Raspberry Pi 3 and PINE64 to Fujitsu’s move away from SPARC64 supercomputers, there hasn’t been a better time to get started with learning this architecture. I wanted to make a start to an Aarch64 assembly language tutorial but didn’t have access to my RPi3, so I looked into the state of QEMU’s emulation. I didn’t need RPi3-specific hardware – which is just as well as I can’t remember off-hand how the bootcode and start.elf crap would work with QEMU – anyway, I opted for a generic device using Linaro’s EDK2 UEFI firmware. The first pre-built EDK2 binary I downloaded wouldn’t play nicely with the OpenBSD kernel so I grabbed a release mentioned by the FreeBSD team – which worked.[…]
https://cryogenix.net/OpenBSD_arm64_qemu.html
Firmware Security 