mirror of
https://github.com/kernelkit/infix.git
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qemu: Support running from DDI images
run.sh has degenerated quite a bit over the years - in no small part due to the way the qemu-system argv is constructed. Cut our losses by taking a fresh look at this problem, now that lots of things need to change anyway. Keep the old script as-is for targets that still use ITB based images.
This commit is contained in:
Tobias Waldekranz
@@ -0,0 +1,279 @@
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mainmenu "QEMU @ARCH@ Virtualization"
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config QEMU_@ARCH@
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bool
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default y
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config QEMU_ARCH
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string
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default "@ARCH@"
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config QEMU_VIRTIO_BUS
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string
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default "device" if QEMU_arm
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default "pci"
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config QEMU_BIN_DDI
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string
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default "@IMAGE@"
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config QEMU_BIN_DISK
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string
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default "@DISK@"
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config QEMU_BIN_ESP
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string
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default "@ESP@"
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config QEMU_BIN_KERNEL
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string
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depends on QEMU_LOADER_QEMU
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default "../zImage" if QEMU_arm
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default "../Image" if QEMU_aarch64
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default "../bzImage" if QEMU_x86_64
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config QEMU_BIN_LVM_STUB
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string
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default "../lvm-stub.disk"
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choice
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prompt "Loader"
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default QEMU_LOADER_QEMU
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config QEMU_LOADER_QEMU
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bool "QEMU"
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config QEMU_LOADER_OVMF
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bool "OVMF (UEFI)"
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endchoice
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config QEMU_BIN_BIOS
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string
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depends on !QEMU_LOADER_KERNEL
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default "OVMF.fd" if QEMU_LOADER_OVMF
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menu "Machine"
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config QEMU_MACHINE
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string "Machine"
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default "pc" if QEMU_x86_64
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default "virt"
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config QEMU_CPU
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string "CPU"
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default "host" if QEMU_x86_64
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default "cortex-a53" if QEMU_aarch64
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default "max"
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config QEMU_RAM
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string "RAM size (k/M/G)"
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default "384M"
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choice
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prompt "Console"
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default QEMU_CONSOLE_VIRTIO
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config QEMU_CONSOLE_VIRTIO
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bool "Virtio (hvc0)"
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config QEMU_CONSOLE_SERIAL
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bool "Serial (ttyS0/ttyAMA0)"
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endchoice
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config QEMU_CONSOLE
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string
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default "hvc0" if QEMU_CONSOLE_VIRTIO
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default "ttyAMA0" if QEMU_arm
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default "ttyAMA0" if QEMU_aarch64
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default "ttyS0"
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endmenu
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menu "Disks & Filesystems"
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config QEMU_DISK_INITRD
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bool "Use the DDI as initrd"
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depends on QEMU_LOADER_QEMU
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help
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Pass, and boot from, the DDI as the initial RAM disk.
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This is useful to test netbooting scenarios, e.g., in
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combination with an empty system disk to simulate an initial
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deployment.
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comment "System disk"
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choice
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prompt "Interface"
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default QEMU_DISK_SYS_IF_VIRTIO
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config QEMU_DISK_SYS_IF_VIRTIO
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bool "virtio"
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help
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Attach system disks using virtio block devices.
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endchoice
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choice
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prompt "Contents"
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default QEMU_DISK_SYS_SPLIT
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config QEMU_DISK_SYS_EMPTY
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bool "Empty disk"
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help
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Attach an empty disk.
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This is useful for testing things like installing Infix from a
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USB mass storage device (see "USB Mass Storage" below).
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config QEMU_DISK_SYS_FULL
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bool "Full system disk"
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help
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Use the full system disk containing:
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- EFI partition (and backup) with Barebox
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- LVM PV with Infix installed
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This is useful when testing system upgrades, fallback
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mechanisms related to corrupt disks etc.
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WARNING: Usage of this option is fraught with peril as
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incremental builds of Infix are likely to cause corruption in
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the QCoW2 layer. If you do not understand the meaning of this
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you most likely to NOT want to make use of this feature.
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config QEMU_DISK_SYS_NONE
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bool "None"
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help
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Do not attach any system disk.
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This is useful for testing how Infix behaves when no persistent
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storage is available - a common scenario during bringup of a
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new board.
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config QEMU_DISK_SYS_SPLIT
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bool "Split ESP/DDI/LVM"
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help
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Attach the EFI System partition, containing Barebox; the raw
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DDI image; and an (initially empty) LVM stub for persistent
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storage - each as a separate disk.
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This is the simplest way of testing out incremental builds of
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Infix. Since the DDI is attached as a raw read-only disk, there
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is no risk of CoW corruption like with a full system disk.
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NOTE: In this setup, the size below refers to the size of the
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LVM stub.
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endchoice
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config QEMU_DISK_SYS_SIZE
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string "Size (k/M/G)"
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default "8G"
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comment "USB mass storage"
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choice
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prompt "Contents"
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default QEMU_DISK_USB_NONE
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config QEMU_DISK_USB_DISK
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bool "Full system disk"
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help
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Attach the full system disk containing:
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- EFI partition (and backup) with Barebox
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- LVM PV with Infix installed
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config QEMU_DISK_USB_NONE
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bool "None"
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help
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Do not attach any disk over USB.
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endchoice
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config QEMU_DISK_USB_SIZE
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string "Size (k/M/G)"
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depends on !QEMU_DISK_USB_NONE
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default "4G"
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comment "Host filesystem passthrough (9P)"
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config QEMU_DISK_HOST
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string "Path"
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default "/tmp"
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endmenu
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menu "Networking"
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choice
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prompt "Mode"
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default QEMU_NET_USER
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config QEMU_NET_BRIDGE
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bool "Bridged"
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config QEMU_NET_NONE
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bool "None"
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config QEMU_NET_ROCKER
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bool "Rocker"
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config QEMU_NET_TAP
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bool "TAP"
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config QEMU_NET_USER
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bool "User"
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endchoice
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config QEMU_NET_MODE
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string
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default "bridge" if QEMU_NET_BRIDGE
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default "none" if QEMU_NET_NONE
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default "rocker" if QEMU_NET_ROCKER
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default "tap" if QEMU_NET_TAP
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default "user" if QEMU_NET_USER
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config QEMU_NET_MODEL
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string "Interface model"
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default "virtio-net-device" if QEMU_arm
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default "virtio-net-pci"
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help
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The default virtio NIC works for most use-cases, but if you
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want to play with low-level stuff like ethtool, you might
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want to test the Intel 82545EM driver, e1000.
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Note: ARM 32-bit uses virtio-net-device (MMIO) by default.
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config QEMU_NET_BRIDGE_DEV
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string "Bridge device"
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depends on QEMU_NET_BRIDGE
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default "virbr0"
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config QEMU_NET_USER_OPTS
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string "User mode options"
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depends on QEMU_NET_USER
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help
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Extra -nic user,<OPTIONS>
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config QEMU_NET_TAP_N
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int "Number of TAPs"
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depends on QEMU_NET_TAP
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default 1
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config QEMU_NET_PORTS
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int "Number of Rocker switch ports"
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depends on QEMU_NET_ROCKER
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default 10
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endmenu
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config QEMU_EXTRA
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string "Extra QEMU options"
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config QEMU_APPEND
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string "Extra kernel options"
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depends on QEMU_LOADER_QEMU
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Executable
+480
@@ -0,0 +1,480 @@
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#!/bin/sh
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# This script can be used to start an Infix OS image in Qemu. It reads
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# either a .config, generated from Config.in, or qemu.cfg from a release
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# tarball, for the required configuration data.
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#
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# Debian/Ubuntu users can change the configuration post-release, install
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# the kconfig-frontends package:
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#
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# sudo apt install kconfig-frontends
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#
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# and then call this script with:
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#
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# ./run.sh -c
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#
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# To bring up a menuconfig dialog. Select `Exit` and save the changes.
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# For more help, see:_
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#
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# ./run.sh -h
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#
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# shellcheck disable=SC3037
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# Add /sbin to PATH for mkfs.ext4 and such (not default in debian)
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export PATH="/sbin:/usr/sbin:$PATH"
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qdir=$(dirname "$(readlink -f "$0")")
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imgdir=$(readlink -f "${qdir}/..")
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prognm=$(basename "$0")
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usage()
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{
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cat <<EOF
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usage: $prognm [OPTIONS] [-- KERNEL-ARGS]
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Start Infix in a VM.
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Any arguments after -- are passed to the kernel, provided that QEMU's
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native loader is being used (i.e., not UEFI, for example). This
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includes a second --, which the kernel uses to delimit between kernel
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arguments and those passed to the init process.
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Options:
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-0
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Clear any copy-on-write layers, resetting all disks to their
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initial states, and exit.
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-c
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Run menuconfig to change Qemu settings. This requires the
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'kconfig-frontends' package (Debian/Ubuntu).
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-G
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Skip config generation. This is useful if you are testing out new
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QEMU features by manually modifying qemu.cfg.
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-h
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Show this help message
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Example:
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$prognm -- loglevel=4 -- finit.debug
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Will set the kernel's loglevel to 4, and pass finit.debug as an
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argument to PID 1.
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EOF
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}
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die()
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{
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echo "$prognm: $*" >&2
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exit 1
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}
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binpath()
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{
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case "$1" in
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./*|../*)
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# Relative paths are relative to the location of .config
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printf "$qdir/$1"
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;;
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*)
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printf "$1"
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;;
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esac
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}
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q()
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{
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local _cmd="$1"
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shift
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case "$_cmd" in
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sect)
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printf ' \\\n\t' >>"$qdir"/qemu.sh
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case $# in
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1)
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printf -- "-$1" >>"$qdir"/qemu.sh
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_delim=" "
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;;
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2)
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printf -- "-$1 $2" >>"$qdir"/qemu.sh
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_delim=","
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;;
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*)
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die "q sect: Invalid arguments"
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;;
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esac
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;;
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param)
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[ $# -eq 2 ] || die "q param: Takes exactly two arguments"
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printf -- "$_delim$1=$2" >>"$qdir"/qemu.sh
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_delim=","
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;;
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option)
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[ $# -eq 1 ] || die "q option: Takes exactly one argument"
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printf -- "$_delim$1" >>"$qdir"/qemu.sh
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_delim=","
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;;
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*)
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die "q: Unknown command: $_cmd"
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;;
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esac
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}
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q_sect_device_virtio()
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{
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q sect device virtio-$1-$QEMU_VIRTIO_BUS
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}
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q_add_disk()
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{
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if [ "$QEMU_DISK_SYS_IF_VIRTIO" ]; then
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q_sect_device_virtio blk
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q param drive "$1"
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else
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die "Unknown system disk interface"
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fi
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}
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q_sect_device_usb()
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{
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if [ -z "$usb_bus_added" ]; then
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q sect usb
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q sect device usb-ehci
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q param id ehci
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usb_bus_added=YES
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fi
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q sect device "$1"
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q param bus ehci.0
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}
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qcowed()
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{
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local _qcow="$qdir"/"$1".qcow2
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local _base _size
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|
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if [ -f "$_qcow" ] && qemu-img check -q "$_qcow"; then
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echo "$_qcow"
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return
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||||
fi
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||||
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rm -f "$_qcow"
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|
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case $# in
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2)
|
||||
_size="$2"
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|
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qemu-img create -q -f qcow2 "$_qcow" "$_size" \
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|| die "Unable to create $1"
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;;
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3)
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_base="$2"
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_size="$3"
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|
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[ "$_size" = "auto" ] && _size=
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qemu-img create -q -f qcow2 -F raw \
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-o backing_file="$_base" "$_qcow" $_size \
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||||
|| die "Unable to create CoW layer for $_base"
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||||
;;
|
||||
*)
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||||
die "qcowed: usage: qcowed <name> [<backing-file>] <size>"
|
||||
;;
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||||
esac
|
||||
|
||||
echo "$_qcow"
|
||||
}
|
||||
|
||||
append()
|
||||
{
|
||||
echo -n " $*" >>"$qdir"/append
|
||||
}
|
||||
|
||||
gen_machine()
|
||||
{
|
||||
q sect machine
|
||||
q param type "$QEMU_MACHINE"
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||||
q param accel kvm:tcg
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||||
|
||||
q sect cpu "$QEMU_CPU"
|
||||
|
||||
q sect m
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||||
q param size "$QEMU_RAM"
|
||||
}
|
||||
|
||||
gen_loader()
|
||||
{
|
||||
if [ "$QEMU_LOADER_QEMU" ]; then
|
||||
q sect kernel $(binpath "$QEMU_BIN_KERNEL")
|
||||
elif [ "$QEMU_LOADER_OVMF" ]; then
|
||||
q sect bios $(binpath "$QEMU_BIN_BIOS")
|
||||
fi
|
||||
}
|
||||
|
||||
gen_serial()
|
||||
{
|
||||
q sect display none
|
||||
|
||||
q_sect_device_virtio serial
|
||||
|
||||
q sect chardev stdio
|
||||
q param id console0
|
||||
q param mux on
|
||||
|
||||
q sect mon
|
||||
q param chardev console0
|
||||
|
||||
case "$QEMU_CONSOLE" in
|
||||
hvc0)
|
||||
q sect device virtconsole
|
||||
q param nr 0
|
||||
q param name console
|
||||
q param chardev console0
|
||||
;;
|
||||
ttyS0|ttyAMA0)
|
||||
q sect serial chardev:console0
|
||||
;;
|
||||
*)
|
||||
die "Unsupported console: $QEMU_CONSOLE"
|
||||
;;
|
||||
esac
|
||||
|
||||
append console="$QEMU_CONSOLE"
|
||||
|
||||
[ "$V" ] && append debug || append loglevel=4
|
||||
}
|
||||
|
||||
gpt_uuid()
|
||||
{
|
||||
sgdisk "$1" -p | awk '
|
||||
BEGIN { err = 1; } END { exit(err); }
|
||||
/^Creating new GPT/ { exit; }
|
||||
|
||||
/^Disk identifier \(GUID\): / {
|
||||
print($4); err = 0; exit;
|
||||
}' || die "Unable to determine GPT UUID of $1"
|
||||
}
|
||||
|
||||
gen_disk_sys_empty()
|
||||
{
|
||||
q sect drive
|
||||
q param id disk-sys
|
||||
q param format qcow2
|
||||
q param if none
|
||||
q param file $(qcowed disk-sys "$QEMU_DISK_SYS_SIZE")
|
||||
|
||||
q_add_disk disk-sys
|
||||
}
|
||||
|
||||
gen_disk_sys_full()
|
||||
{
|
||||
q sect drive
|
||||
q param id disk-sys
|
||||
q param format qcow2
|
||||
q param if none
|
||||
q param file $(qcowed disk-sys $(binpath "$QEMU_BIN_DISK") \
|
||||
"$QEMU_DISK_SYS_SIZE")
|
||||
|
||||
q_add_disk disk-sys
|
||||
|
||||
append root=ddi:lvm:internal/$(basename "$QEMU_BIN_DDI")
|
||||
}
|
||||
|
||||
gen_disk_sys_split()
|
||||
{
|
||||
# EFI System Partition
|
||||
q sect drive
|
||||
q param id disk-esp
|
||||
q param format qcow2
|
||||
q param if none
|
||||
q param file $(qcowed disk-esp $(binpath "$QEMU_BIN_ESP") auto)
|
||||
|
||||
q_add_disk disk-esp
|
||||
|
||||
# LVM stub
|
||||
q sect drive
|
||||
q param id disk-sys
|
||||
q param format qcow2
|
||||
q param if none
|
||||
q param file $(qcowed disk-sys $(binpath "$QEMU_BIN_LVM_STUB") \
|
||||
"$QEMU_DISK_SYS_SIZE")
|
||||
|
||||
q_add_disk disk-sys
|
||||
|
||||
# DDI (ro)
|
||||
q sect drive
|
||||
q param id disk-ddi
|
||||
q param format raw
|
||||
q param file $(binpath "$QEMU_BIN_DDI")
|
||||
q param if none
|
||||
q param read-only on
|
||||
|
||||
q_add_disk disk-ddi
|
||||
|
||||
append root=ddi:GPTUUID=$(gpt_uuid $(binpath "$QEMU_BIN_DDI"))
|
||||
}
|
||||
|
||||
gen_disk_sys()
|
||||
{
|
||||
[ "$QEMU_DISK_SYS_NONE" ] && return
|
||||
|
||||
if [ "$QEMU_DISK_SYS_EMPTY" ]; then
|
||||
gen_disk_sys_empty
|
||||
elif [ "$QEMU_DISK_SYS_FULL" ]; then
|
||||
gen_disk_sys_full
|
||||
elif [ "$QEMU_DISK_SYS_SPLIT" ]; then
|
||||
gen_disk_sys_split
|
||||
else
|
||||
die "Unknown system disk mode"
|
||||
fi
|
||||
}
|
||||
|
||||
gen_disk_usb()
|
||||
{
|
||||
[ "$QEMU_DISK_USB_NONE" ] && return
|
||||
|
||||
if [ "$QEMU_DISK_USB_DISK" ]; then
|
||||
q sect drive
|
||||
q param id disk-usb
|
||||
q param format qcow2
|
||||
q param file $(qcowed disk-usb \
|
||||
$(binpath "$QEMU_BIN_DISK") \
|
||||
"$QEMU_DISK_USB_SIZE")
|
||||
q param if none
|
||||
|
||||
q_sect_device_usb usb-storage
|
||||
q param drive disk-usb
|
||||
else
|
||||
die "Unknown USB attachment"
|
||||
fi
|
||||
}
|
||||
|
||||
gen_disk_initrd()
|
||||
{
|
||||
[ "$QEMU_DISK_INITRD" ] || return
|
||||
|
||||
q sect initrd $(binpath "$QEMU_BIN_DDI")
|
||||
append root=ddi:/initrd.image
|
||||
}
|
||||
|
||||
internal_is_available()
|
||||
{
|
||||
[ "$QEMU_DISK_SYS_FULL" ] || [ "$QEMU_DISK_SYS_SPLIT" ] \
|
||||
|| [ "$QEMU_DISK_USB_DISK" ]
|
||||
}
|
||||
|
||||
gen_disks()
|
||||
{
|
||||
gen_disk_sys
|
||||
gen_disk_usb
|
||||
|
||||
gen_disk_initrd
|
||||
|
||||
internal_is_available || append rd.nointernal
|
||||
}
|
||||
|
||||
gen_gdb()
|
||||
{
|
||||
# Create a UNIX socket on the host that is connected to a virtio
|
||||
# console in the guest, which gdbserver can attach to for
|
||||
# userspace debugging.
|
||||
q sect chardev socket
|
||||
q param id gdbserver
|
||||
q param path "$qdir"/gdbserver.sock
|
||||
q param server on
|
||||
q param wait off
|
||||
|
||||
q sect device virtconsole
|
||||
q param nr 1
|
||||
q param name gdbserver
|
||||
q param chardev gdbserver
|
||||
|
||||
# Create a UNIX socket on the host that is connected to QEMU's GDB
|
||||
# stub, for bootloader/kernel debugging.
|
||||
q sect chardev socket
|
||||
q param id gdbqemu
|
||||
q param path "$qdir"/gdbqemu.sock
|
||||
q param server on
|
||||
q param wait off
|
||||
|
||||
q sect gdb chardev:gdbqemu
|
||||
}
|
||||
|
||||
gen_all()
|
||||
{
|
||||
local _append
|
||||
|
||||
: >"$qdir"/append
|
||||
cat <<EOF >"$qdir"/qemu.sh
|
||||
#!/bin/sh
|
||||
|
||||
echo "Starting Qemu :: Ctrl-a x -- exit | Ctrl-a c -- toggle console/monitor"
|
||||
|
||||
line=\$(stty -g)
|
||||
stty raw
|
||||
trap 'stty "\$line"' EXIT INT TERM
|
||||
|
||||
qemu-system-$QEMU_ARCH -nodefaults \\
|
||||
EOF
|
||||
chmod +x "$qdir"/qemu.sh
|
||||
|
||||
gen_machine
|
||||
gen_loader
|
||||
gen_serial
|
||||
gen_disks
|
||||
gen_gdb
|
||||
|
||||
if [ "$QEMU_LOADER_QEMU" ]; then
|
||||
_append=$(cat "$qdir"/append)
|
||||
q sect append "\"$_append $QEMU_APPEND $*\""
|
||||
fi
|
||||
|
||||
echo >>"$qdir"/qemu.sh
|
||||
}
|
||||
|
||||
menuconfig()
|
||||
{
|
||||
command -v kconfig-mconf >/dev/null \
|
||||
|| die "cannot find kconfig-mconf for menuconfig"
|
||||
|
||||
CONFIG_= KCONFIG_CONFIG="$qdir"/.config \
|
||||
kconfig-mconf "$qdir"/Config.in
|
||||
}
|
||||
|
||||
_generate=YES
|
||||
|
||||
while getopts "0cGh-" opt; do
|
||||
case ${opt} in
|
||||
0)
|
||||
echo "Clearing all copy-on-write layers" >&2
|
||||
rm -f "$qdir"/*.qcow2
|
||||
exit 0
|
||||
;;
|
||||
c)
|
||||
menuconfig
|
||||
;;
|
||||
G)
|
||||
_generate=
|
||||
;;
|
||||
h)
|
||||
usage && exit 0
|
||||
;;
|
||||
-)
|
||||
break
|
||||
;;
|
||||
*)
|
||||
usage && exit 1
|
||||
;;
|
||||
esac
|
||||
done
|
||||
shift $((OPTIND - 1))
|
||||
|
||||
# shellcheck disable=SC1090
|
||||
. "$qdir"/.config
|
||||
|
||||
[ "$_generate" ] && gen_all "$*"
|
||||
|
||||
exec "$qdir"/qemu.sh
|
||||
@@ -4,9 +4,15 @@
|
||||
#
|
||||
################################################################################
|
||||
|
||||
QEMU_SCRIPTS_DIR := $(pkgdir)
|
||||
qemu-scripts-dir := $(pkgdir)/$(if $(IMAGE_DDI),ddi,itb)
|
||||
qemu-image := ../$(INFIX_ARTIFACT).$(if $(IMAGE_DDI),raw,qcow2)
|
||||
qemu-disk := $(if $(IMAGE_DDI_DISK),../$(INFIX_ARTIFACT).disk)
|
||||
qemu-esp := $(if $(IMAGE_BAREBOX_ESP),../barebox-esp.vfat)
|
||||
|
||||
qemu-kconfig-prefix := $(if $(IMAGE_DDI),,CONFIG_)
|
||||
|
||||
qemu-kconfig = \
|
||||
CONFIG_="CONFIG_" \
|
||||
CONFIG_="$(qemu-kconfig-prefix)" \
|
||||
BR2_CONFIG="$(BINARIES_DIR)/qemu/.config" \
|
||||
$(BUILD_DIR)/buildroot-config/$(1) $(2) "$(BINARIES_DIR)/qemu/Config.in"
|
||||
|
||||
@@ -25,17 +31,19 @@ qemu-scripts: \
|
||||
$(BINARIES_DIR)/qemu/Config.in \
|
||||
$(BINARIES_DIR)/qemu/.config
|
||||
|
||||
$(BINARIES_DIR)/qemu/run.sh: $(QEMU_SCRIPTS_DIR)/run.sh
|
||||
$(BINARIES_DIR)/qemu/run.sh: $(qemu-scripts-dir)/run.sh
|
||||
@$(call IXMSG,"Installing QEMU scripts")
|
||||
@mkdir -p $(dir $@)
|
||||
@cp $< $@
|
||||
|
||||
$(BINARIES_DIR)/qemu/Config.in: $(QEMU_SCRIPTS_DIR)/Config.in.in
|
||||
$(BINARIES_DIR)/qemu/Config.in: $(qemu-scripts-dir)/Config.in.in
|
||||
@mkdir -p $(dir $@)
|
||||
@sed \
|
||||
-e "s:@ARCH@:QEMU_$(BR2_ARCH):" \
|
||||
-e "s:@DISK_IMG@:../$(INFIX_ARTIFACT).qcow2:" \
|
||||
< $< >$@
|
||||
-e "s:@ARCH@:$(BR2_ARCH):g" \
|
||||
-e "s:@IMAGE@:$(qemu-image):g" \
|
||||
-e "s:@DISK@:$(qemu-disk):g" \
|
||||
-e "s:@ESP@:$(qemu-esp):g" \
|
||||
<$< >$@
|
||||
|
||||
$(BINARIES_DIR)/qemu/.config: $(BINARIES_DIR)/qemu/Config.in
|
||||
@$(call qemu-kconfig,conf,--olddefconfig)
|
||||
|
||||
Reference in New Issue
Block a user