The aarch64_efi_defconfig allows to build a minimal Linux system that
can boot on all AArch64 servers providing an EFI firmware and ACPI.
Building and booting
====================
$ make aarch64_efi_defconfig
$ make
The file output/images/disk.img is a complete disk image that can be
booted, it includes the grub2 bootloader, Linux kernel and root
filesystem.
Testing under Qemu
==================
This image can also be tested using Qemu:
qemu-system-aarch64 \
-M virt \
-cpu cortex-a57 \
-m 512 \
-nographic \
-bios </path/to/QEMU_EFI.fd> \
-drive file=output/images/disk.img,if=none,format=raw,id=hd0 \
-device virtio-blk-device,drive=hd0 \
-netdev user,id=eth0 \
-device virtio-net-device,netdev=eth0
Note that </path/to/QEMU_EFI.fd> needs to point to a valid aarch64 UEFI
firmware image for qemu.
It may be provided by your distribution as a edk2-aarch64 or AAVMF
package, in path such as /usr/share/edk2/aarch64/QEMU_EFI.fd .
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