| # Help runqemu boot target board, "QB" means Qemu Boot, the following |
| # vars can be set in conf files, such as <bsp.conf> 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_SMP: amount of CPU cores inside qemu guest, each mapped to a thread on the host, |
| # e.g. "-smp 8". |
| # |
| # 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 |
| # By default "/dev/vda rw" gets passed to the kernel. |
| # To mount the rootfs read-only QB_KERNEL_ROOT can be set to e.g. "/dev/vda ro". |
| # |
| # 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: network 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 |
| # |
| # QB_GRAPHICS: QEMU video card type (e.g. "-vga std") |
| # |
| # Usage: |
| # IMAGE_CLASSES += "qemuboot" |
| # See "runqemu help" for more info |
| |
| QB_MEM ?= "-m 256" |
| QB_SMP ?= "" |
| QB_SERIAL_OPT ?= "-serial mon:stdio -serial null" |
| QB_DEFAULT_KERNEL ?= "${KERNEL_IMAGETYPE}" |
| QB_DEFAULT_FSTYPE ?= "ext4" |
| QB_RNG ?= "-object rng-random,filename=/dev/urandom,id=rng0 -device virtio-rng-pci,rng=rng0" |
| QB_OPT_APPEND ?= "" |
| QB_NETWORK_DEVICE ?= "-device virtio-net-pci,netdev=net0,mac=@MAC@" |
| QB_CMDLINE_IP_SLIRP ?= "ip=dhcp" |
| QB_CMDLINE_IP_TAP ?= "ip=192.168.7.@CLIENT@::192.168.7.@GATEWAY@:255.255.255.0::eth0:off:8.8.8.8" |
| QB_ROOTFS_EXTRA_OPT ?= "" |
| QB_GRAPHICS ?= "" |
| |
| # This should be kept align with ROOT_VM |
| QB_DRIVE_TYPE ?= "/dev/sd" |
| |
| inherit image-artifact-names |
| |
| # Create qemuboot.conf |
| addtask do_write_qemuboot_conf after do_rootfs before do_image |
| |
| def qemuboot_vars(d): |
| build_vars = ['MACHINE', 'TUNE_ARCH', 'DEPLOY_DIR_IMAGE', |
| 'KERNEL_IMAGETYPE', 'IMAGE_NAME', 'IMAGE_LINK_NAME', |
| 'STAGING_DIR_NATIVE', 'STAGING_BINDIR_NATIVE', |
| 'STAGING_DIR_HOST', 'SERIAL_CONSOLES'] |
| return build_vars + [k for k in d.keys() if k.startswith('QB_')] |
| |
| do_write_qemuboot_conf[vardeps] += "${@' '.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')) |
| if d.getVar('IMAGE_LINK_NAME'): |
| qemuboot_link = "%s/%s.qemuboot.conf" % (d.getVar('IMGDEPLOYDIR'), d.getVar('IMAGE_LINK_NAME')) |
| else: |
| qemuboot_link = "" |
| 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)): |
| if ":" in k: |
| continue |
| # 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 and qemuboot_link != qemuboot: |
| if os.path.lexists(qemuboot_link): |
| os.remove(qemuboot_link) |
| os.symlink(os.path.basename(qemuboot), qemuboot_link) |
| } |