David, I'm not sure what you are asking? Per UEFI Spec boot policy there are well know NVRAM variables that define boot policy. See UEFI Spec 3.3 Globally Defined Variables. Look at BootOrder, BootNext, Boot#### etc.
The memory mapped volume part is tricky as there is not a concept of booting from a memory mapped volume. See "3.5 Boot Mechanisms" in the UEFI Spec. If you loaded a RAM Disk driver that produced Simple File System then you could form boot from that. The PI spec also defines how to load something out of the FV, so it is also possible to boot from an FV via a device path, but that is not mentioned in the UEFI Spec, as the PI Spec is not required to implement UEFI. Thanks, Andrew Fish > On Mar 26, 2018, at 8:52 PM, david moheban <[email protected]> wrote: > > Hi, > > This question has always been very elusive despite hours of google > searching. Was wondering how it would be possible to convert an efi program > into a memory mapped volume that advertises itself onto your boot menu? For > example to convert shell.efi into a bootable item on my boot menu. > > Thank you > _______________________________________________ > edk2-devel mailing list > [email protected] > https://lists.01.org/mailman/listinfo/edk2-devel _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
