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