| |
| The aarch64_efi_defconfig allows to build a minimal Linux system that |
| can boot on all AArch64 servers providing an EFI firmware. |
| |
| This includes all Arm EBBR[1] compliant systems, and all Arm SystemReady[2] |
| compliant systems for example. |
| |
| |
| 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 . |
| |
| U-Boot based qemu firmware |
| ========================== |
| |
| A qemu firmware with support for UEFI based on U-Boot can be built following |
| the instructions in [3], with qemu_arm64_defconfig. |
| |
| This should give you a nor_flash.bin, which you can use with qemu as an |
| alternative to QEMU_EFI.fd. You will also need to change the machine |
| specification to "-M virt,secure=on" on qemu command line, to enable TrustZone |
| support, and you will need to increase the memory with "-m 1024". |
| |
| [1]: https://github.com/ARM-software/ebbr |
| [2]: https://developer.arm.com/architectures/system-architectures/arm-systemready |
| [3]: https://github.com/glikely/u-boot-tfa-build |
