Re: Migration info - runqemu

["Lock, Joshua G" <joshua.g.lock@intel.com>]

On Fri, 2016-10-14 at 10:12 +0800, Robert Yang wrote:
> Hi Paul and Scott,
> 
> Here it is, and please feel free to comment, most of them are from
> qemuboot.bbclass:
> 
> The new runqemu is a python script, it requires a
> <image-name>-<machine>.qemuboot.conf to boot the bsp, the
> qemuboot.conf
> is generated by qemuboot.bbclass during build rootfs, qemu boot
> arguments can be set in bsp's conf file, and qemuboot.bbclass will
> save
> them to qemuboot.conf.

Can we also document when qemuboot.conf required and what benefits it
brings? Previous usage patterns should also be supported, right?

Thanks,

Joshua

> 
> Note, "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., "-show-cursor"
> 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_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_KERNEL_ROOT: kernel's root, e.g., /dev/vda
> QB_TAP_OPT: netowrk option for 'tap' mode, e.g.,
>              "-netdev tap,id=net0,ifname=@TAP@,script=no,downscript=n
> o -device 
> virtio-net-device,netdev=net0"
>               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 -device virtio-net-
> device,netdev=net0"
> 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.
> 
> Usage:
> IMAGE_CLASSES += "qemuboot"
> See "runqemu help" for more info
> 
> // Robert
> 
> On 10/14/2016 09:48 AM, Paul Eggleton wrote:
> > 
> > Hi folks,
> > 
> > We need some info for the migration section of the 2.2 manual about
> > what the
> > user needs to do to adapt to the new python-based runqemu. Robert /
> > Joshua,
> > can one of you please write something short that explains what
> > users need to
> > do (i.e. changes to the metadata for BSPs, or any other changes in
> > operation)?
> > It doesn't need to be polished, Scott Rifenbark will take care of
> > that. Just
> > replying to this email with Scott on CC should be sufficient.
> > 
> > Thanks,
> > Paul
> > 
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