Nathan Rossi 6cde67d0a8 oeqa/utils/qemurunner.py: Handle QEMU machines with a single serial
Not all QEMU machines are capable of having more than one serial port,
this is due to the machine emulating a physical device/board.

Rework QemuRunner to handle machines that only have 1 serial port, where
the serial port shares output of the kernel log buffer and a login
console. In this case the output is mixed but enables the machine to
boot and have QemuRunner detect the login prompt.

QemuTarget uses SERIAL_CONSOLES to determine the number of available
serial ports.

(From OE-Core rev: 333897c4a00b41681ffe34312a08cae09274327e)

Signed-off-by: Nathan Rossi <nathan@nathanrossi.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2019-11-27 13:25:18 +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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