Re: [Qemu-devel] [PATCH v2 0/4] Allow sysbus devices to be attached via commandline

[Alistair Francis <alistair.francis@xilinx.com>]

CC Konstanty

On Fri, Apr 11, 2014 at 4:34 PM, Alistair Francis
<alistair.francis@xilinx.com> wrote:
> This patch allows sysbus devices to be attached via
> command line arguments.
>
> This can be used to build an entire machine from the command
> line or to just add devices that aren't in the machine_init
> code.
>
> A peripheral can be added with the following syntax:
> -device cadence_uart,addr=0xE0000000,irq=27
>
> A CPU can be added with either of the following:
> -device cpu,model=cortex-a9,type=arm-cpu,reset-cbar=0xF8F00000,midr=0x413        FC090
> -sysbusdev device=cpu,name=microblaze-cp
>
> RAM or ROM can be attached with this command:
> -device memory,name=zynq.ext_ram,addr=0x00000000,size=0x8000000
>
> Multiple IRQ lines can be used as well as multiple properties:
> -device pl330,addr=0xF8003000,irq=13,irq=14,irq=15,irq=16,irq=17,\
> irq=40,irq=41,irq=42,irq=43,num_chnls=8,num_periph_req=4,num_events=16
>
> This implementation uses a three round multi-pass method. This will
> hopefully allow devices attached via the command line to be connected
> to other command line devices (I haven't managed to get that working
> yet though)
>
> With Li Guang's blob loader implemented it is also possible to boot
> images while using "-M none".
>
> V2:
> Use -device to attach the devices (Thanks Markus Armbruster)
> Make the method much more generic
> Allow CPUs and Memory to be attached via command line
> Allow properties to be passed in via the command line
>
> Thanks to Markus Armbruster and Peter Crosthwaite for
> feedback on the first version
>
>
> Alistair Francis (4):
>   qemu-option.c: Add qemu_opt functions that step over arguments
>   qdev-monitor: Implement three functions used to connect devices
>   vl.c: Enable adding devices to the system bus
>   qemu-options.hx: Update the command line documentation for -device
>
>  include/hw/boards.h       |    2 +
>  include/monitor/qdev.h    |    3 +
>  include/qemu/option.h     |    2 +
>  include/qemu/option_int.h |    1 +
>  qdev-monitor.c            |  237 ++++++++++++++++++++++++++++++++++++++++++++-
>  qemu-options.hx           |    8 +-
>  util/qemu-option.c        |   30 ++++++
>  vl.c                      |   74 +++++++++++++-
>  8 files changed, 346 insertions(+), 11 deletions(-)
>