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iPXE seems to be almost alone in the UEFI world in attempting to shut down cleanly, free resources, and leave hardware in a well-defined reset state before handing over to the booted operating system. The UEFI driver model does allow for graceful shutdown via uninstallation of protocol interfaces. However, virtually no other UEFI drivers do this, and the external code paths that react to uninstallation are consequently poorly tested. This leads to a proliferation of bugs found in UEFI implementations in the wild, as described in commits such as1295b4a("[efi] Allow initialisation via SNP interface even while claimed") orb6e2ea0("[efi] Veto the HP XhciDxe Driver"). Try to avoid triggering such bugs by unconditionally skipping the protocol interface uninstallation during UEFI boot services shutdown, leaving the interfaces present but nullified and deliberately leaking the containing memory. Signed-off-by: Michael Brown <mcb30@ipxe.org>
iPXE README File Quick start guide: cd src make For any more detailed instructions, see http://ipxe.org