Extending EFI support in Linux to new architectures
summary
Goal is a generic EFI boot path that avoids x86-specific hacks like shim/grub workarounds and mixed‑mode tricks. Implemented an EFI handover protocol so bootloaders (U-Boot, OVMF) provide initrd and cmdline via a firmware protocol instead of memory clobbering; grub patches are queued. Built an EFI decompressor that reduces per-arch glue to about five lines and already supports arm64, RISC‑V and LoongArch. The shim problem (secureboot hooks) remains unsolved end-to-end.
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chapters (6)
- 0:00Introduction and background
- 2:13EFI boot flow and OS loader role
- 7:52X86-specific EFI limitations
- 16:30Generic EFI handover protocol
- 20:02EFI decompressor for ARM64
- 21:52Future of EFI support
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