doc: Add ovmf option description
Added ovmf NV storage writeback option "w" description and usage example.
@@ -255,7 +255,7 @@ Here are descriptions for each of these ``acrn-dm`` command line parameters:
uses ``/usr/share/acrn/bios/VSBL.bin`` as the vSBL image
- * - :kbd:`--ovmf <ovmf_file_path>`
+ * - :kbd:`--ovmf [w,]<ovmf_file_path>`
- Open Virtual Machine Firmware (OVMF) is an EDK II based project to enable
UEFI support for Virtual Machines.
@@ -269,6 +269,14 @@ Here are descriptions for each of these ``acrn-dm`` command line parameters:
uses ``/usr/share/acrn/bios/OVMF.fd`` as the OVMF image
+ ACRN supports option "w" of OVMF. To preserve any change of OVMF NV data
+ store section, using this option to enable NV data store section writeback.
+
+ usage::
+
+ --ovmf w,/usr/share/acrn/bios/OVMF.fd
+
+
* - :kbd:`--virtio_poll <poll_interval>`
- Enable virtio poll mode with poll interval xxx ns.
