libvirt/tests/qemuxml2argvdata/firmware-manual-efi-nvram-template-stateless.xml

<domain type='qemu'>
  <name>test-bios</name>
  <uuid>362d1fc1-df7d-193e-5c18-49a71bd1da66</uuid>
  <memory unit='KiB'>1048576</memory>
  <vcpu placement='static'>1</vcpu>
  <os>
    <type arch='x86_64' machine='pc'>hvm</type>
    <loader stateless='yes' readonly='yes' type='pflash'>/usr/share/OVMF/OVMF_CODE.fd</loader>
    <nvram template="/usr/share/OVMF/OVMF_VARS.fd"/>
  </os>
  <features>
    <acpi/>
  </features>
  <devices>
    <emulator>/usr/bin/qemu-system-x86_64</emulator>
    <controller type='usb' model='none'/>
    <memballoon model='none'/>
  </devices>
</domain>
conf: support stateless UEFI firmware Normally when an UEFI firmware is marked as read-only, an associated NVRAM file will be created. Some builds of UEFI firmware, however, wish to remain stateless and so will be read-only, but never have any NVRAM file. To represent this concept a 'stateless' tristate bool attribute is introduced on the <loader/> element. There are rather a large number of permutations to consider. With default firmware selection * <os/> => Historic default, no change * <os> <loader stateless='yes'/> </os> => Explicit version of historic default, no change * <os> <loader stateless='no'/> </os> => Invalid, bios is always stateless With manual legacy BIOS selection * <os> <loader>/path/to/seabios</loader> ... </os> => Historic default, no change * <os> <loader stateless='yes'>/path/to/seabios</loader> ... </os> => Explicit version of historic default, no change * <os> <loader stateless='no'>/path/to/seabios</loader> ... </os> => Invalid, bios is always stateless With manual UEFI selection * <os> <loader type='pflash'>/path/to/edk2</loader> ... </os> => Historic default, no change * <os> <loader type='pflash' stateless='yes'>/path/to/edk2</loader> ... </os> => Skip auto-filling NVRAM / template * <os> <loader type='pflash' stateless='no'>/path/to/edk2</loader> ... </os> => Explicit version of historic default, no change With automatic firmware selection * <os firmware='bios'/> => Historic default, no change * <os firmware='bios'> <loader stateless='yes'/> </os> => Explicit version of historic default, no change * <os firmware='bios'> <loader stateless='no'/> </os> => Invalid, bios is always stateless * <os firmware='uefi'/> => Historic default, no change * <os firmware='uefi'> <loader stateless='yes'/> </os> => Skip auto-filling NVRAM / template * <os firmware='uefi'> <loader stateless='no'/> </os> => Explicit version of historic default, no change Reviewed-by: Michal Privoznik <mprivozn@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> 2022-07-22 14:27:55 +00:00			`<domain type='qemu'>`
			`<name>test-bios</name>`
			`<uuid>362d1fc1-df7d-193e-5c18-49a71bd1da66</uuid>`
			`<memory unit='KiB'>1048576</memory>`
			`<vcpu placement='static'>1</vcpu>`
			`<os>`
			`<type arch='x86_64' machine='pc'>hvm</type>`
			`<loader stateless='yes' readonly='yes' type='pflash'>/usr/share/OVMF/OVMF_CODE.fd</loader>`
			`<nvram template="/usr/share/OVMF/OVMF_VARS.fd"/>`
			`</os>`
			`<features>`
			`<acpi/>`
			`</features>`
			`<devices>`
			`<emulator>/usr/bin/qemu-system-x86_64</emulator>`
			`<controller type='usb' model='none'/>`
			`<memballoon model='none'/>`
			`</devices>`
			`</domain>`