Displaying 4 results from an estimated 4 matches for "varstore".
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maystore
2016 Apr 20
1
Re: uefi built from tiancore via edk2 can't persist boot changes
...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 di...
2016 Mar 21
4
uefi built from tiancore via edk2 can't persist boot changes
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
2016 Mar 24
0
Re: uefi built from tiancore via edk2 can't persist boot changes
...>/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, whic...
2017 Jul 13
1
Re: [Fwd: UEFI NVRAM variables]
...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 built...