poky/meta/classes-recipe/qemuboot.bbclass - mdmillerii/openbmc - Gitiles

 #
 # Copyright OpenEmbedded Contributors
 #
 # SPDX-License-Identifier: MIT
 #

 # 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"
 #                                            e.g., "bzImage-initramfs-qemux86-64.bin" if INITRAMFS_IMAGE_BUNDLE is set to 1.
 #
 # 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., "-device AC97", 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")
 # QB_NFSROOTFS_EXTRA_OPT: extra options to be appended to the nfs rootfs options in kernel boot arg, e.g.,
 #                         "wsize=4096,rsize=4096"
 #
 # 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 ?= "${@bb.utils.contains("INITRAMFS_IMAGE_BUNDLE", "1", "${KERNEL_IMAGETYPE}-${INITRAMFS_LINK_NAME}.bin", "${KERNEL_IMAGETYPE}", d)}"
 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 net.ifnames=0"
 QB_ROOTFS_EXTRA_OPT ?= ""
 QB_GRAPHICS ?= ""
 QB_NFSROOTFS_EXTRA_OPT ?= ""

 # With 6.5+ (specifically, if DMA_BOUNCE_UNALIGNED_KMALLOC is set) the SW IO TLB
 # is used, and it defaults to 64MB. This is too much when there's only 256MB of
 # RAM, so request 0 slabs and lets the kernel round up to the appropriate minimum
 # (1MB, typically). In virtual hardware there's very little need for these bounce
 # buffers, so the 64MB would be mostly wasted.
 QB_KERNEL_CMDLINE_APPEND:append = " swiotlb=0"

 # 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', 'UNINATIVE_LOADER']
     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/recipe-sysroot-native/usr/bin/')
         else:
             val = d.getVar(k)
         if val is None:
             continue
         # 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)
 }
	#
	# Copyright OpenEmbedded Contributors
	#
	# SPDX-License-Identifier: MIT
	#

	# 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"
	# e.g., "bzImage-initramfs-qemux86-64.bin" if INITRAMFS_IMAGE_BUNDLE is set to 1.
	#
	# 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., "-device AC97", 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")
	# QB_NFSROOTFS_EXTRA_OPT: extra options to be appended to the nfs rootfs options in kernel boot arg, e.g.,
	# "wsize=4096,rsize=4096"
	#
	# 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 ?= "${@bb.utils.contains("INITRAMFS_IMAGE_BUNDLE", "1", "${KERNEL_IMAGETYPE}-${INITRAMFS_LINK_NAME}.bin", "${KERNEL_IMAGETYPE}", d)}"
	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 net.ifnames=0"
	QB_ROOTFS_EXTRA_OPT ?= ""
	QB_GRAPHICS ?= ""
	QB_NFSROOTFS_EXTRA_OPT ?= ""

	# With 6.5+ (specifically, if DMA_BOUNCE_UNALIGNED_KMALLOC is set) the SW IO TLB
	# is used, and it defaults to 64MB. This is too much when there's only 256MB of
	# RAM, so request 0 slabs and lets the kernel round up to the appropriate minimum
	# (1MB, typically). In virtual hardware there's very little need for these bounce
	# buffers, so the 64MB would be mostly wasted.
	QB_KERNEL_CMDLINE_APPEND:append = " swiotlb=0"

	# 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', 'UNINATIVE_LOADER']
	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/recipe-sysroot-native/usr/bin/')
	else:
	val = d.getVar(k)
	if val is None:
	continue
	# 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)
	}