Hi Leif,
I working on wrapping up the last details on my iSCSI wiki page (https://wiki.linaro.org/LEG/Engineering/Kernel/UEFI/UEFI_ISCSI) and have found a couple of issues.
1) I seem to be unable to save new boot menu entries. I can change the order, and that persists. The iSCSI configuration itself persists, but new menu entries themselves don't seem to. I also can't seem to delete any.
2) In the "change boot order" menu, there is no menu item to save the config, only the "F10=save". F10 exits the menu, but does not seem to save it, as the "Configuration changed" stays up. When you try to exit the boot maintenance manager it prompts you to save the data.
Have you encountered either of these?
Roy