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docs: update virt/vm/firmware

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Lukas Greve
2025-11-08 10:28:09 +00:00
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virt/vm/firmware.md
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title: Firmware
description:
published: true
date: 2023-10-15T14:30:00.632Z
date: 2025-11-08T10:28:07.779Z
tags:
editor: markdown
dateCreated: 2022-01-25T14:50:10.751Z
@@ -12,13 +12,11 @@ dateCreated: 2022-01-25T14:50:10.751Z
Virtual devices, including virtual chipsets, are shipping alongside platform firmware.
## Common platform firmware for virtual machines
### SeaBIOS
## SeaBIOS
[SeaBIOS](https://www.seabios.org/SeaBIOS) is an implementation of an x86 BIOS which relies on [coreboot](https://www.coreboot.org/). It is used for legacy systems, but also to specialized and cloud optimized guests systems which don't require UEFI.
### OVMF
## OVMF
[OVMF](https://github.com/tianocore/tianocore.github.io/wiki/OVMF), which stands for Open Virtual Machine Firmware, is a UEFI-compatible firmware.
@@ -26,7 +24,36 @@ It is based on the [TianoCore](https://www.tianocore.org/) project, which provid
It is the default method to boot UEFI-based operating systems in a virtual machine.
### Rust Hypervisor Firmware
Under Fedora-based systems such as Phyllome, firmware that can be used by virtual machines are stored in the following directory `/usr/share/edk2/ovmf`
| Name | Feature |
| :-- | --: |
| OVMF_CODE.fd | |
| OVMF_VARS.fd | |
| OVMF_CODE_4M.qcow2 | |
| OVMF_VARS_4M.qcow2 | |
| OVMF_CODE_4M.secboot.pcrlock | |
| OVMF_CODE_4M.secboot.qcow2 | |
| OVMF_VARS_4M.secboot.qcow2 | |
| OVMF_CODE.cc.fd | |
| OVMF_CODE.secboot.fd | |
| OVMF_CODE.secboot.pcrlock | |
| OVMF_VARS.secboot.fd | |
| OVMF.igvm | |
| OVMF.qemuvars.fd | |
| OVMF.stateless.fd | |
| OVMF.stateless.secboot.fd | |
| OVMF.stateless.secboot.pcrlock | |
| OVMF.amdsev.fd | |
| OVMF.inteltdx.fd | |
| OVMF.inteltdx.secboot.fd | |
## MicroVM
## Rust Hypervisor Firmware
The [Rust Hypervisor Firmware](https://github.com/cloud-hypervisor/rust-hypervisor-firmware) (RHF) is a UEFI-compatible firmware. It is focused on simplicity and performance and is designed to run cloud-centric operating systems.