search for: varstor

...fd</loader> > <nvram > template='/your/build/output/OVMF_VARS.fd' > >/var/lib/libvirt/qemu/nvram/guest_name_VARS.fd</nvram> > </os> > > This allows the firmware binary to be upgraded centrally, while every VM > can keep its private varstore. > > The virt-install(1) manual describes this, under the example > > --boot > > loader=/.../OVMF_CODE.fd,loader_ro=yes,loader_type=pflash,nvram_template=/.../OVMF_VARS.fd > > The way you specified it implies that the varstore range will be mapped > as read-only pflash d...

Apologies if this has been gone over, but I believe I have checked the intertubes more than a bit..... I am using libvirt and have vms booting under an OVMF.fd to use an efi firmware. I can create vms, linux ubuntu, and they will boot up. However, everytime I reboot am I dropped into the default efi shell provide by the tianocore build. Then I must walk the FS to the booting efi app and run, in

...>/your/build/output/OVMF_CODE.fd</loader> <nvram template='/your/build/output/OVMF_VARS.fd' >/var/lib/libvirt/qemu/nvram/guest_name_VARS.fd</nvram> </os> This allows the firmware binary to be upgraded centrally, while every VM can keep its private varstore. The virt-install(1) manual describes this, under the example --boot loader=/.../OVMF_CODE.fd,loader_ro=yes,loader_type=pflash,nvram_template=/.../OVMF_VARS.fd The way you specified it implies that the varstore range will be mapped as read-only pflash directly from the unified OVMF.fd file, whi...

...uest>_VARS.fd) is the functional composition of three layers in the edk2 driver stack: - platform-specific pflash driver / layout - generic fault tolerant write driver (implementing a kind of journaled system, where you can "lose power" in the middle of a write operation, and your varstore won't be corrupted) - generic variable driver None of these are standardized in UEFI, and even restricting ourselves to edk2 (the reference implementation of PI/UEFI), only the last two layers are documented in Intel whitepapers. Regarding examples for the first layer, OVMF itself can be buil...