# Help runqemu boot target board, "QB" means Qemu Boot, the following
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# vars can be set in conf files, such as <bsp.conf> to make it can be
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# boot by runqemu:
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#
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# QB_SYSTEM_NAME: qemu name, e.g., "qemu-system-i386"
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#
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# QB_OPT_APPEND: options to append to qemu, e.g., "-device usb-mouse"
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#
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# QB_DEFAULT_KERNEL: default kernel to boot, e.g., "bzImage"
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#
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# QB_DEFAULT_FSTYPE: default FSTYPE to boot, e.g., "ext4"
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#
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# QB_MEM: memory, e.g., "-m 512"
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#
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# QB_MACHINE: qemu machine, e.g., "-machine virt"
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#
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# QB_CPU: qemu cpu, e.g., "-cpu qemu32"
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#
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# QB_CPU_KVM: the similar to QB_CPU, but used when kvm, e.g., '-cpu kvm64',
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# set it when support kvm.
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#
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# QB_SMP: amount of CPU cores inside qemu guest, each mapped to a thread on the host,
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# e.g. "-smp 8".
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#
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# QB_KERNEL_CMDLINE_APPEND: options to append to kernel's -append
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# option, e.g., "console=ttyS0 console=tty"
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#
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# QB_DTB: qemu dtb name
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#
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# QB_AUDIO_DRV: qemu audio driver, e.g., "alsa", set it when support audio
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#
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# QB_AUDIO_OPT: qemu audio option, e.g., "-soundhw ac97,es1370", used
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# when QB_AUDIO_DRV is set.
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#
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# QB_RNG: Pass-through for host random number generator, it can speedup boot
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# in system mode, where system is experiencing entropy starvation
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#
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# QB_KERNEL_ROOT: kernel's root, e.g., /dev/vda
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#
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# QB_NETWORK_DEVICE: network device, e.g., "-device virtio-net-pci,netdev=net0,mac=@MAC@",
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# it needs work with QB_TAP_OPT and QB_SLIRP_OPT.
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# Note, runqemu will replace @MAC@ with a predefined mac, you can set
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# a custom one, but that may cause conflicts when multiple qemus are
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# running on the same host.
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# Note: If more than one interface of type -device virtio-net-device gets added,
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# QB_NETWORK_DEVICE:prepend might be used, since Qemu enumerates the eth*
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# devices in reverse order to -device arguments.
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#
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# QB_TAP_OPT: network option for 'tap' mode, e.g.,
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# "-netdev tap,id=net0,ifname=@TAP@,script=no,downscript=no"
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# Note, runqemu will replace "@TAP@" with the one which is used, such as tap0, tap1 ...
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#
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# QB_SLIRP_OPT: network option for SLIRP mode, e.g., -netdev user,id=net0"
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#
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# QB_CMDLINE_IP_SLIRP: If QB_NETWORK_DEVICE adds more than one network interface to qemu, usually the
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# ip= kernel comand line argument needs to be changed accordingly. Details are documented
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# in the kernel docuemntation https://www.kernel.org/doc/Documentation/filesystems/nfs/nfsroot.txt
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# Example to configure only the first interface: "ip=eth0:dhcp"
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# QB_CMDLINE_IP_TAP: This parameter is similar to the QB_CMDLINE_IP_SLIRP parameter. Since the tap interface requires
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# static IP configuration @CLIENT@ and @GATEWAY@ place holders are replaced by the IP and the gateway
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# address of the qemu guest by runqemu.
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# Example: "ip=192.168.7.@CLIENT@::192.168.7.@GATEWAY@:255.255.255.0::eth0"
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#
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# QB_ROOTFS_OPT: used as rootfs, e.g.,
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# "-drive id=disk0,file=@ROOTFS@,if=none,format=raw -device virtio-blk-device,drive=disk0"
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# Note, runqemu will replace "@ROOTFS@" with the one which is used, such as core-image-minimal-qemuarm64.ext4.
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#
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# QB_SERIAL_OPT: serial port, e.g., "-serial mon:stdio"
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#
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# QB_TCPSERIAL_OPT: tcp serial port option, e.g.,
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# " -device virtio-serial-device -chardev socket,id=virtcon,port=@PORT@,host=127.0.0.1 -device virtconsole,chardev=virtcon"
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# Note, runqemu will replace "@PORT@" with the port number which is used.
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#
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# QB_ROOTFS_EXTRA_OPT: extra options to be appended to the rootfs device in case there is none specified by QB_ROOTFS_OPT.
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# Can be used to automatically determine the image from the other variables
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# but define things link 'bootindex' when booting from EFI or 'readonly' when using squashfs
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# without the need to specify a dedicated qemu configuration
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#
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# QB_GRAPHICS: QEMU video card type (e.g. "-vga std")
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#
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# Usage:
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# IMAGE_CLASSES += "qemuboot"
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# See "runqemu help" for more info
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QB_MEM ?= "-m 256"
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QB_SMP ?= ""
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QB_SERIAL_OPT ?= "-serial mon:stdio -serial null"
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QB_DEFAULT_KERNEL ?= "${KERNEL_IMAGETYPE}"
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QB_DEFAULT_FSTYPE ?= "ext4"
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QB_RNG ?= "-object rng-random,filename=/dev/urandom,id=rng0 -device virtio-rng-pci,rng=rng0"
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QB_OPT_APPEND ?= ""
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QB_NETWORK_DEVICE ?= "-device virtio-net-pci,netdev=net0,mac=@MAC@"
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QB_CMDLINE_IP_SLIRP ?= "ip=dhcp"
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QB_CMDLINE_IP_TAP ?= "ip=192.168.7.@CLIENT@::192.168.7.@GATEWAY@:255.255.255.0"
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QB_ROOTFS_EXTRA_OPT ?= ""
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QB_GRAPHICS ?= ""
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# This should be kept align with ROOT_VM
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QB_DRIVE_TYPE ?= "/dev/sd"
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inherit image-artifact-names
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# Create qemuboot.conf
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addtask do_write_qemuboot_conf after do_rootfs before do_image
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def qemuboot_vars(d):
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build_vars = ['MACHINE', 'TUNE_ARCH', 'DEPLOY_DIR_IMAGE',
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'KERNEL_IMAGETYPE', 'IMAGE_NAME', 'IMAGE_LINK_NAME',
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'STAGING_DIR_NATIVE', 'STAGING_BINDIR_NATIVE',
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'STAGING_DIR_HOST', 'SERIAL_CONSOLES']
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return build_vars + [k for k in d.keys() if k.startswith('QB_')]
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do_write_qemuboot_conf[vardeps] += "${@' '.join(qemuboot_vars(d))}"
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do_write_qemuboot_conf[vardepsexclude] += "TOPDIR"
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python do_write_qemuboot_conf() {
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import configparser
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qemuboot = "%s/%s.qemuboot.conf" % (d.getVar('IMGDEPLOYDIR'), d.getVar('IMAGE_NAME'))
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qemuboot_link = "%s/%s.qemuboot.conf" % (d.getVar('IMGDEPLOYDIR'), d.getVar('IMAGE_LINK_NAME'))
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finalpath = d.getVar("DEPLOY_DIR_IMAGE")
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topdir = d.getVar('TOPDIR')
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cf = configparser.ConfigParser()
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cf.add_section('config_bsp')
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for k in sorted(qemuboot_vars(d)):
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if ":" in k:
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continue
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# qemu-helper-native sysroot is not removed by rm_work and
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# contains all tools required by runqemu
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if k == 'STAGING_BINDIR_NATIVE':
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val = os.path.join(d.getVar('BASE_WORKDIR'), d.getVar('BUILD_SYS'),
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'qemu-helper-native/1.0-r1/recipe-sysroot-native/usr/bin/')
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else:
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val = d.getVar(k)
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# we only want to write out relative paths so that we can relocate images
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# and still run them
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if val.startswith(topdir):
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val = os.path.relpath(val, finalpath)
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cf.set('config_bsp', k, '%s' % val)
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# QB_DEFAULT_KERNEL's value of KERNEL_IMAGETYPE is the name of a symlink
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# to the kernel file, which hinders relocatability of the qb conf.
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# Read the link and replace it with the full filename of the target.
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kernel_link = os.path.join(d.getVar('DEPLOY_DIR_IMAGE'), d.getVar('QB_DEFAULT_KERNEL'))
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kernel = os.path.realpath(kernel_link)
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# we only want to write out relative paths so that we can relocate images
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# and still run them
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kernel = os.path.relpath(kernel, finalpath)
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cf.set('config_bsp', 'QB_DEFAULT_KERNEL', kernel)
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bb.utils.mkdirhier(os.path.dirname(qemuboot))
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with open(qemuboot, 'w') as f:
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cf.write(f)
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if qemuboot_link != qemuboot:
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if os.path.lexists(qemuboot_link):
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os.remove(qemuboot_link)
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os.symlink(os.path.basename(qemuboot), qemuboot_link)
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}
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