The AA64 EFI bootloader is a critical yet often overlooked component of modern ARM64 systems. Far from being a simple "kernel loader," it must navigate UEFI protocols, handle device trees or ACPI, manage secure boot, and comply with precise ARM64 calling conventions—all while operating in a constrained firmware environment.
// Locate kernel file (hardcoded example) EFI_FILE_PROTOCOL *root = NULL; EFI_LOADED_IMAGE_PROTOCOL *loaded = NULL; uefi_call_wrapper(BS->HandleProtocol, 3, image_handle, &LoadedImageProtocol, (void**)&loaded); aa64 efi bootloader
Unlike x86, AA64 does not support legacy BIOS. The Arm Platform Boot Requirements (PBR) specification mandates UEFI on all AA64 server-class and many embedded systems. The AA64 EFI bootloader is a critical yet