Anton Kachalov 49c4fdcb88 rootfs: add option to allow delayed postinsts on read-only rootfs
Example use case in OpenBMC: rootfs is squashfs and the system has either
overlayfs for whole rootfs or for some parts (e.g. /etc).

This option will allow to create migration one-shot postinsts using
"pkg_postinst_ontarget_${PN}" routines defined in recipes to fix
files under upper workdir in overlayfs.

(From OE-Core rev: 0977204e16279b117811b5d5cdac5918287e95ac)

Signed-off-by: Anton D. Kachalov <rnouse@google.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2021-01-16 22:39:35 +00:00

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.
Description
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