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This unit was changed from 'BindsTo' in the following commit. """ commit f0f359ec9210759f6b4dbfb35d3fba8af208c43a Author: Jason Wessel <jason.wessel@windriver.com> Date: Thu Aug 29 07:00:31 2019 -0700 serial-getty@.service: Allow device to fast fail if it does not exist """ It was changed back to 'BindTo' in the following commit. """ commit 63bbff61b78c651339c4b18d8376187379ec3b3c Author: Otavio Salvador <otavio.salvador@gmail.com> Date: Fri Jun 12 14:30:44 2020 -0300 systemd: Sync systemd-serialgetty@.service with upstream """ This is now causing runtime problem for qemuarm64. The default.target is not reached until a timeout. Output is like below. """ root@qemuarm64:~# systemd-analyze Bootup is not yet finished (org.freedesktop.systemd1.Manager.FinishTimestampMonotonic=0). Please try again later. Hint: Use 'systemctl list-jobs' to see active jobs root@qemuarm64:~# systemctl list-jobs JOB UNIT TYPE STATE 102 getty.target start waiting 1 multi-user.target start waiting 95 systemd-update-utmp-runlevel.service start waiting 110 serial-getty@hvc0.service start waiting 111 dev-hvc0.device start running """ We can see that we are waiting for /dev/hvc0, while in fact there's no /dev/hvc0. Jason's commit actually solves such problem. So restore to use Jason's method. Do not use 'BindsTo'. (From OE-Core rev: b1d0eacc431517695c348ad14f4452be607c0b62) Signed-off-by: Chen Qi <Qi.Chen@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org> (cherry picked from commit 43b989c1231d3d867303ccebceda72364a9519ee) Signed-off-by: Steve Sakoman <steve@sakoman.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
QEMU Emulation Targets ====================== To simplify development, the build system supports building images to work with the QEMU emulator in system emulation mode. Several architectures are currently supported in 32 and 64 bit variants: * ARM (qemuarm + qemuarm64) * x86 (qemux86 + qemux86-64) * PowerPC (qemuppc only) * MIPS (qemumips + qemumips64) Use of the QEMU images is covered in the Yocto Project Reference Manual. The appropriate MACHINE variable value corresponding to the target is given in brackets.