1 # mach-virt - VirtIO guest (serial console)
2 # =========================================================
6 # $ qemu-system-aarch64 \
8 # -readconfig mach-virt-serial.cfg \
9 # -display none -serial mon:stdio \
12 # You will probably need to tweak the lines marked as
13 # CHANGE ME before being able to use this configuration!
15 # The guest will have a selection of VirtIO devices
16 # tailored towards optimal performance with modern guests,
17 # and will be accessed through the serial console.
19 # ---------------------------------------------------------
21 # Using -nodefaults is required to have full control over
22 # the virtual hardware: when it's specified, QEMU will
23 # populate the board with only the builtin peripherals,
24 # such as the PL011 UART, plus a PCI Express Root Bus; the
25 # user will then have to explicitly add further devices.
27 # The PCI Express Root Bus shows up in the guest as:
31 # This configuration file adds a number of other useful
32 # devices, more specifically:
34 # 00.1c.* PCI bridge (PCI Express Root Ports)
35 # 01:00.0 SCSI storage controller
36 # 02:00.0 Ethernet controller
38 # More information about these devices is available below.
40 # We use '-display none' to prevent QEMU from creating a
41 # graphical display window, which would serve no use in
42 # this specific configuration, and '-serial mon:stdio' to
43 # multiplex the guest's serial console and the QEMU monitor
44 # to the host's stdio; use 'Ctrl+A h' to learn how to
45 # switch between the two and more.
49 # =========================================================
51 # We use the virt machine type and enable KVM acceleration
52 # for better performance.
54 # Using less than 1 GiB of memory is probably not going to
55 # yield good performance in the guest, and might even lead
56 # to obscure boot issues in some cases.
58 # Unfortunately, there is no way to configure the CPU model
59 # in this file, so it will have to be provided on the
60 # command line, but we can configure the guest to use the
61 # same GIC version as the host.
74 # Firmware configuration
75 # =========================================================
77 # There are two parts to the firmware: a read-only image
78 # containing the executable code, which is shared between
79 # guests, and a read/write variable store that is owned
80 # by one specific guest, exclusively, and is used to
81 # record information such as the UEFI boot order.
83 # For any new guest, its permanent, private variable store
84 # should initially be copied from the template file
85 # provided along with the firmware binary.
87 # Depending on the OS distribution you're using on the
88 # host, the name of the package containing the firmware
89 # binary and variable store template, as well as the paths
90 # to the files themselves, will be different. For example:
94 # /usr/share/edk2/aarch64/QEMU_EFI-pflash.raw (bin)
95 # /usr/share/edk2/aarch64/vars-template-pflash.raw (var)
99 # /usr/share/AAVMF/AAVMF_CODE.fd (bin)
100 # /usr/share/AAVMF/AAVMF_VARS.fd (var)
104 # /usr/share/AAVMF/AAVMF_CODE.fd (bin)
105 # /usr/share/AAVMF/AAVMF_VARS.fd (var)
107 [drive "uefi-binary"]
108 file = "/usr/share/AAVMF/AAVMF_CODE.fd" # CHANGE ME
114 [drive "uefi-varstore"]
115 file = "guest_VARS.fd" # CHANGE ME
121 # PCI bridge (PCI Express Root Ports)
122 # =========================================================
124 # We create eight PCI Express Root Ports, and we plug them
125 # all into separate functions of the same slot. Some of
126 # them will be used by devices, the rest will remain
127 # available for hotplug.
130 driver = "pcie-root-port"
138 driver = "pcie-root-port"
145 driver = "pcie-root-port"
152 driver = "pcie-root-port"
159 driver = "pcie-root-port"
166 driver = "pcie-root-port"
173 driver = "pcie-root-port"
180 driver = "pcie-root-port"
187 # SCSI storage controller (and storage)
188 # =========================================================
190 # We use virtio-scsi here so that we can (hot)plug a large
191 # number of disks without running into issues; a SCSI disk,
192 # backed by a qcow2 disk image on the host's filesystem, is
195 # We also create an optical disk, mostly for installation
196 # purposes: once the guest OS has been successfully
197 # installed, the guest will no longer boot from optical
198 # media. If you don't want, or no longer want, to have an
199 # optical disk in the guest you can safely comment out
200 # all relevant sections below.
203 driver = "virtio-scsi-pci"
214 file = "guest.qcow2" # CHANGE ME
218 [device "scsi-optical-disk"]
221 drive = "optical-disk"
224 [drive "optical-disk"]
225 file = "install.iso" # CHANGE ME
230 # Ethernet controller
231 # =========================================================
233 # We use virtio-net for improved performance over emulated
234 # hardware; on the host side, we take advantage of user
235 # networking so that the QEMU process doesn't require any
236 # additional privileges.
242 driver = "virtio-net-pci"