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Annotation of qemu/qemu-options.hx, revision 1.1

1.1     ! root        1: HXCOMM Use DEFHEADING() to define headings in both help text and texi
        !             2: HXCOMM Text between STEXI and ETEXI are copied to texi version and
        !             3: HXCOMM discarded from C version
        !             4: HXCOMM DEF(option, HAS_ARG/0, opt_enum, opt_help) is used to construct
        !             5: HXCOMM option structures, enums and help message.
        !             6: HXCOMM HXCOMM can be used for comments, discarded from both texi and C
        !             7: 
        !             8: DEFHEADING(Standard options:)
        !             9: STEXI
        !            10: @table @option
        !            11: ETEXI
        !            12: 
        !            13: DEF("help", 0, QEMU_OPTION_h,
        !            14:     "-h or -help     display this help and exit\n")
        !            15: STEXI
        !            16: @item -h
        !            17: Display help and exit
        !            18: ETEXI
        !            19: 
        !            20: DEF("version", 0, QEMU_OPTION_version,
        !            21:     "-version        display version information and exit\n")
        !            22: STEXI
        !            23: @item -version
        !            24: Display version information and exit
        !            25: ETEXI
        !            26: 
        !            27: DEF("M", HAS_ARG, QEMU_OPTION_M,
        !            28:     "-M machine      select emulated machine (-M ? for list)\n")
        !            29: STEXI
        !            30: @item -M @var{machine}
        !            31: Select the emulated @var{machine} (@code{-M ?} for list)
        !            32: ETEXI
        !            33: 
        !            34: DEF("cpu", HAS_ARG, QEMU_OPTION_cpu,
        !            35:     "-cpu cpu        select CPU (-cpu ? for list)\n")
        !            36: STEXI
        !            37: @item -cpu @var{model}
        !            38: Select CPU model (-cpu ? for list and additional feature selection)
        !            39: ETEXI
        !            40: 
        !            41: DEF("smp", HAS_ARG, QEMU_OPTION_smp,
        !            42:     "-smp n          set the number of CPUs to 'n' [default=1]\n")
        !            43: STEXI
        !            44: @item -smp @var{n}
        !            45: Simulate an SMP system with @var{n} CPUs. On the PC target, up to 255
        !            46: CPUs are supported. On Sparc32 target, Linux limits the number of usable CPUs
        !            47: to 4.
        !            48: ETEXI
        !            49: 
        !            50: DEF("numa", HAS_ARG, QEMU_OPTION_numa,
        !            51:     "-numa node[,mem=size][,cpus=cpu[-cpu]][,nodeid=node]\n")
        !            52: STEXI
        !            53: @item -numa @var{opts}
        !            54: Simulate a multi node NUMA system. If mem and cpus are omitted, resources
        !            55: are split equally.
        !            56: ETEXI
        !            57: 
        !            58: DEF("fda", HAS_ARG, QEMU_OPTION_fda,
        !            59:     "-fda/-fdb file  use 'file' as floppy disk 0/1 image\n")
        !            60: DEF("fdb", HAS_ARG, QEMU_OPTION_fdb, "")
        !            61: STEXI
        !            62: @item -fda @var{file}
        !            63: @item -fdb @var{file}
        !            64: Use @var{file} as floppy disk 0/1 image (@pxref{disk_images}). You can
        !            65: use the host floppy by using @file{/dev/fd0} as filename (@pxref{host_drives}).
        !            66: ETEXI
        !            67: 
        !            68: DEF("hda", HAS_ARG, QEMU_OPTION_hda,
        !            69:     "-hda/-hdb file  use 'file' as IDE hard disk 0/1 image\n")
        !            70: DEF("hdb", HAS_ARG, QEMU_OPTION_hdb, "")
        !            71: DEF("hdc", HAS_ARG, QEMU_OPTION_hdc,
        !            72:     "-hdc/-hdd file  use 'file' as IDE hard disk 2/3 image\n")
        !            73: DEF("hdd", HAS_ARG, QEMU_OPTION_hdd, "")
        !            74: STEXI
        !            75: @item -hda @var{file}
        !            76: @item -hdb @var{file}
        !            77: @item -hdc @var{file}
        !            78: @item -hdd @var{file}
        !            79: Use @var{file} as hard disk 0, 1, 2 or 3 image (@pxref{disk_images}).
        !            80: ETEXI
        !            81: 
        !            82: DEF("cdrom", HAS_ARG, QEMU_OPTION_cdrom,
        !            83:     "-cdrom file     use 'file' as IDE cdrom image (cdrom is ide1 master)\n")
        !            84: STEXI
        !            85: @item -cdrom @var{file}
        !            86: Use @var{file} as CD-ROM image (you cannot use @option{-hdc} and
        !            87: @option{-cdrom} at the same time). You can use the host CD-ROM by
        !            88: using @file{/dev/cdrom} as filename (@pxref{host_drives}).
        !            89: ETEXI
        !            90: 
        !            91: DEF("drive", HAS_ARG, QEMU_OPTION_drive,
        !            92:     "-drive [file=file][,if=type][,bus=n][,unit=m][,media=d][,index=i]\n"
        !            93:     "       [,cyls=c,heads=h,secs=s[,trans=t]][,snapshot=on|off]\n"
        !            94:     "       [,cache=writethrough|writeback|none][,format=f][,serial=s]\n"
        !            95:     "       [,addr=A]\n"
        !            96:     "                use 'file' as a drive image\n")
        !            97: STEXI
        !            98: @item -drive @var{option}[,@var{option}[,@var{option}[,...]]]
        !            99: 
        !           100: Define a new drive. Valid options are:
        !           101: 
        !           102: @table @code
        !           103: @item file=@var{file}
        !           104: This option defines which disk image (@pxref{disk_images}) to use with
        !           105: this drive. If the filename contains comma, you must double it
        !           106: (for instance, "file=my,,file" to use file "my,file").
        !           107: @item if=@var{interface}
        !           108: This option defines on which type on interface the drive is connected.
        !           109: Available types are: ide, scsi, sd, mtd, floppy, pflash, virtio.
        !           110: @item bus=@var{bus},unit=@var{unit}
        !           111: These options define where is connected the drive by defining the bus number and
        !           112: the unit id.
        !           113: @item index=@var{index}
        !           114: This option defines where is connected the drive by using an index in the list
        !           115: of available connectors of a given interface type.
        !           116: @item media=@var{media}
        !           117: This option defines the type of the media: disk or cdrom.
        !           118: @item cyls=@var{c},heads=@var{h},secs=@var{s}[,trans=@var{t}]
        !           119: These options have the same definition as they have in @option{-hdachs}.
        !           120: @item snapshot=@var{snapshot}
        !           121: @var{snapshot} is "on" or "off" and allows to enable snapshot for given drive (see @option{-snapshot}).
        !           122: @item cache=@var{cache}
        !           123: @var{cache} is "none", "writeback", or "writethrough" and controls how the host cache is used to access block data.
        !           124: @item format=@var{format}
        !           125: Specify which disk @var{format} will be used rather than detecting
        !           126: the format.  Can be used to specifiy format=raw to avoid interpreting
        !           127: an untrusted format header.
        !           128: @item serial=@var{serial}
        !           129: This option specifies the serial number to assign to the device.
        !           130: @item addr=@var{addr}
        !           131: Specify the controller's PCI address (if=virtio only).
        !           132: @end table
        !           133: 
        !           134: By default, writethrough caching is used for all block device.  This means that
        !           135: the host page cache will be used to read and write data but write notification
        !           136: will be sent to the guest only when the data has been reported as written by
        !           137: the storage subsystem.
        !           138: 
        !           139: Writeback caching will report data writes as completed as soon as the data is
        !           140: present in the host page cache.  This is safe as long as you trust your host.
        !           141: If your host crashes or loses power, then the guest may experience data
        !           142: corruption.  When using the @option{-snapshot} option, writeback caching is
        !           143: used by default.
        !           144: 
        !           145: The host page cache can be avoided entirely with @option{cache=none}.  This will
        !           146: attempt to do disk IO directly to the guests memory.  QEMU may still perform
        !           147: an internal copy of the data.
        !           148: 
        !           149: Some block drivers perform badly with @option{cache=writethrough}, most notably,
        !           150: qcow2.  If performance is more important than correctness,
        !           151: @option{cache=writeback} should be used with qcow2.
        !           152: 
        !           153: Instead of @option{-cdrom} you can use:
        !           154: @example
        !           155: qemu -drive file=file,index=2,media=cdrom
        !           156: @end example
        !           157: 
        !           158: Instead of @option{-hda}, @option{-hdb}, @option{-hdc}, @option{-hdd}, you can
        !           159: use:
        !           160: @example
        !           161: qemu -drive file=file,index=0,media=disk
        !           162: qemu -drive file=file,index=1,media=disk
        !           163: qemu -drive file=file,index=2,media=disk
        !           164: qemu -drive file=file,index=3,media=disk
        !           165: @end example
        !           166: 
        !           167: You can connect a CDROM to the slave of ide0:
        !           168: @example
        !           169: qemu -drive file=file,if=ide,index=1,media=cdrom
        !           170: @end example
        !           171: 
        !           172: If you don't specify the "file=" argument, you define an empty drive:
        !           173: @example
        !           174: qemu -drive if=ide,index=1,media=cdrom
        !           175: @end example
        !           176: 
        !           177: You can connect a SCSI disk with unit ID 6 on the bus #0:
        !           178: @example
        !           179: qemu -drive file=file,if=scsi,bus=0,unit=6
        !           180: @end example
        !           181: 
        !           182: Instead of @option{-fda}, @option{-fdb}, you can use:
        !           183: @example
        !           184: qemu -drive file=file,index=0,if=floppy
        !           185: qemu -drive file=file,index=1,if=floppy
        !           186: @end example
        !           187: 
        !           188: By default, @var{interface} is "ide" and @var{index} is automatically
        !           189: incremented:
        !           190: @example
        !           191: qemu -drive file=a -drive file=b"
        !           192: @end example
        !           193: is interpreted like:
        !           194: @example
        !           195: qemu -hda a -hdb b
        !           196: @end example
        !           197: ETEXI
        !           198: 
        !           199: DEF("mtdblock", HAS_ARG, QEMU_OPTION_mtdblock,
        !           200:     "-mtdblock file  use 'file' as on-board Flash memory image\n")
        !           201: STEXI
        !           202: 
        !           203: @item -mtdblock file
        !           204: Use 'file' as on-board Flash memory image.
        !           205: ETEXI
        !           206: 
        !           207: DEF("sd", HAS_ARG, QEMU_OPTION_sd,
        !           208:     "-sd file        use 'file' as SecureDigital card image\n")
        !           209: STEXI
        !           210: @item -sd file
        !           211: Use 'file' as SecureDigital card image.
        !           212: ETEXI
        !           213: 
        !           214: DEF("pflash", HAS_ARG, QEMU_OPTION_pflash,
        !           215:     "-pflash file    use 'file' as a parallel flash image\n")
        !           216: STEXI
        !           217: @item -pflash file
        !           218: Use 'file' as a parallel flash image.
        !           219: ETEXI
        !           220: 
        !           221: DEF("boot", HAS_ARG, QEMU_OPTION_boot,
        !           222:     "-boot [order=drives][,once=drives][,menu=on|off]\n"
        !           223:     "                'drives': floppy (a), hard disk (c), CD-ROM (d), network (n)\n")
        !           224: STEXI
        !           225: @item -boot [order=@var{drives}][,once=@var{drives}][,menu=on|off]
        !           226: 
        !           227: Specify boot order @var{drives} as a string of drive letters. Valid
        !           228: drive letters depend on the target achitecture. The x86 PC uses: a, b
        !           229: (floppy 1 and 2), c (first hard disk), d (first CD-ROM), n-p (Etherboot
        !           230: from network adapter 1-4), hard disk boot is the default. To apply a
        !           231: particular boot order only on the first startup, specify it via
        !           232: @option{once}.
        !           233: 
        !           234: Interactive boot menus/prompts can be enabled via @option{menu=on} as far
        !           235: as firmware/BIOS supports them. The default is non-interactive boot.
        !           236: 
        !           237: @example
        !           238: # try to boot from network first, then from hard disk
        !           239: qemu -boot order=nc
        !           240: # boot from CD-ROM first, switch back to default order after reboot
        !           241: qemu -boot once=d
        !           242: @end example
        !           243: 
        !           244: Note: The legacy format '-boot @var{drives}' is still supported but its
        !           245: use is discouraged as it may be removed from future versions.
        !           246: ETEXI
        !           247: 
        !           248: DEF("snapshot", 0, QEMU_OPTION_snapshot,
        !           249:     "-snapshot       write to temporary files instead of disk image files\n")
        !           250: STEXI
        !           251: @item -snapshot
        !           252: Write to temporary files instead of disk image files. In this case,
        !           253: the raw disk image you use is not written back. You can however force
        !           254: the write back by pressing @key{C-a s} (@pxref{disk_images}).
        !           255: ETEXI
        !           256: 
        !           257: DEF("m", HAS_ARG, QEMU_OPTION_m,
        !           258:     "-m megs         set virtual RAM size to megs MB [default=%d]\n")
        !           259: STEXI
        !           260: @item -m @var{megs}
        !           261: Set virtual RAM size to @var{megs} megabytes. Default is 128 MiB.  Optionally,
        !           262: a suffix of ``M'' or ``G'' can be used to signify a value in megabytes or
        !           263: gigabytes respectively.
        !           264: ETEXI
        !           265: 
        !           266: DEF("k", HAS_ARG, QEMU_OPTION_k,
        !           267:     "-k language     use keyboard layout (for example 'fr' for French)\n")
        !           268: STEXI
        !           269: @item -k @var{language}
        !           270: 
        !           271: Use keyboard layout @var{language} (for example @code{fr} for
        !           272: French). This option is only needed where it is not easy to get raw PC
        !           273: keycodes (e.g. on Macs, with some X11 servers or with a VNC
        !           274: display). You don't normally need to use it on PC/Linux or PC/Windows
        !           275: hosts.
        !           276: 
        !           277: The available layouts are:
        !           278: @example
        !           279: ar  de-ch  es  fo     fr-ca  hu  ja  mk     no  pt-br  sv
        !           280: da  en-gb  et  fr     fr-ch  is  lt  nl     pl  ru     th
        !           281: de  en-us  fi  fr-be  hr     it  lv  nl-be  pt  sl     tr
        !           282: @end example
        !           283: 
        !           284: The default is @code{en-us}.
        !           285: ETEXI
        !           286: 
        !           287: 
        !           288: #ifdef HAS_AUDIO
        !           289: DEF("audio-help", 0, QEMU_OPTION_audio_help,
        !           290:     "-audio-help     print list of audio drivers and their options\n")
        !           291: #endif
        !           292: STEXI
        !           293: @item -audio-help
        !           294: 
        !           295: Will show the audio subsystem help: list of drivers, tunable
        !           296: parameters.
        !           297: ETEXI
        !           298: 
        !           299: #ifdef HAS_AUDIO
        !           300: DEF("soundhw", HAS_ARG, QEMU_OPTION_soundhw,
        !           301:     "-soundhw c1,... enable audio support\n"
        !           302:     "                and only specified sound cards (comma separated list)\n"
        !           303:     "                use -soundhw ? to get the list of supported cards\n"
        !           304:     "                use -soundhw all to enable all of them\n")
        !           305: #endif
        !           306: STEXI
        !           307: @item -soundhw @var{card1}[,@var{card2},...] or -soundhw all
        !           308: 
        !           309: Enable audio and selected sound hardware. Use ? to print all
        !           310: available sound hardware.
        !           311: 
        !           312: @example
        !           313: qemu -soundhw sb16,adlib disk.img
        !           314: qemu -soundhw es1370 disk.img
        !           315: qemu -soundhw ac97 disk.img
        !           316: qemu -soundhw all disk.img
        !           317: qemu -soundhw ?
        !           318: @end example
        !           319: 
        !           320: Note that Linux's i810_audio OSS kernel (for AC97) module might
        !           321: require manually specifying clocking.
        !           322: 
        !           323: @example
        !           324: modprobe i810_audio clocking=48000
        !           325: @end example
        !           326: ETEXI
        !           327: 
        !           328: STEXI
        !           329: @end table
        !           330: ETEXI
        !           331: 
        !           332: DEF("usb", 0, QEMU_OPTION_usb,
        !           333:     "-usb            enable the USB driver (will be the default soon)\n")
        !           334: STEXI
        !           335: USB options:
        !           336: @table @option
        !           337: 
        !           338: @item -usb
        !           339: Enable the USB driver (will be the default soon)
        !           340: ETEXI
        !           341: 
        !           342: DEF("usbdevice", HAS_ARG, QEMU_OPTION_usbdevice,
        !           343:     "-usbdevice name add the host or guest USB device 'name'\n")
        !           344: STEXI
        !           345: 
        !           346: @item -usbdevice @var{devname}
        !           347: Add the USB device @var{devname}. @xref{usb_devices}.
        !           348: 
        !           349: @table @code
        !           350: 
        !           351: @item mouse
        !           352: Virtual Mouse. This will override the PS/2 mouse emulation when activated.
        !           353: 
        !           354: @item tablet
        !           355: Pointer device that uses absolute coordinates (like a touchscreen). This
        !           356: means qemu is able to report the mouse position without having to grab the
        !           357: mouse. Also overrides the PS/2 mouse emulation when activated.
        !           358: 
        !           359: @item disk:[format=@var{format}]:file
        !           360: Mass storage device based on file. The optional @var{format} argument
        !           361: will be used rather than detecting the format. Can be used to specifiy
        !           362: format=raw to avoid interpreting an untrusted format header.
        !           363: 
        !           364: @item host:bus.addr
        !           365: Pass through the host device identified by bus.addr (Linux only).
        !           366: 
        !           367: @item host:vendor_id:product_id
        !           368: Pass through the host device identified by vendor_id:product_id (Linux only).
        !           369: 
        !           370: @item serial:[vendorid=@var{vendor_id}][,productid=@var{product_id}]:@var{dev}
        !           371: Serial converter to host character device @var{dev}, see @code{-serial} for the
        !           372: available devices.
        !           373: 
        !           374: @item braille
        !           375: Braille device.  This will use BrlAPI to display the braille output on a real
        !           376: or fake device.
        !           377: 
        !           378: @item net:options
        !           379: Network adapter that supports CDC ethernet and RNDIS protocols.
        !           380: 
        !           381: @end table
        !           382: ETEXI
        !           383: 
        !           384: DEF("name", HAS_ARG, QEMU_OPTION_name,
        !           385:     "-name string1[,process=string2]    set the name of the guest\n"
        !           386:     "            string1 sets the window title and string2 the process name (on Linux)\n")
        !           387: STEXI
        !           388: @item -name @var{name}
        !           389: Sets the @var{name} of the guest.
        !           390: This name will be displayed in the SDL window caption.
        !           391: The @var{name} will also be used for the VNC server.
        !           392: Also optionally set the top visible process name in Linux.
        !           393: ETEXI
        !           394: 
        !           395: DEF("uuid", HAS_ARG, QEMU_OPTION_uuid,
        !           396:     "-uuid %%08x-%%04x-%%04x-%%04x-%%012x\n"
        !           397:     "                specify machine UUID\n")
        !           398: STEXI
        !           399: @item -uuid @var{uuid}
        !           400: Set system UUID.
        !           401: ETEXI
        !           402: 
        !           403: STEXI
        !           404: @end table
        !           405: ETEXI
        !           406: 
        !           407: DEFHEADING()
        !           408: 
        !           409: DEFHEADING(Display options:)
        !           410: 
        !           411: STEXI
        !           412: @table @option
        !           413: ETEXI
        !           414: 
        !           415: DEF("nographic", 0, QEMU_OPTION_nographic,
        !           416:     "-nographic      disable graphical output and redirect serial I/Os to console\n")
        !           417: STEXI
        !           418: @item -nographic
        !           419: 
        !           420: Normally, QEMU uses SDL to display the VGA output. With this option,
        !           421: you can totally disable graphical output so that QEMU is a simple
        !           422: command line application. The emulated serial port is redirected on
        !           423: the console. Therefore, you can still use QEMU to debug a Linux kernel
        !           424: with a serial console.
        !           425: ETEXI
        !           426: 
        !           427: #ifdef CONFIG_CURSES
        !           428: DEF("curses", 0, QEMU_OPTION_curses,
        !           429:     "-curses         use a curses/ncurses interface instead of SDL\n")
        !           430: #endif
        !           431: STEXI
        !           432: @item -curses
        !           433: 
        !           434: Normally, QEMU uses SDL to display the VGA output.  With this option,
        !           435: QEMU can display the VGA output when in text mode using a
        !           436: curses/ncurses interface.  Nothing is displayed in graphical mode.
        !           437: ETEXI
        !           438: 
        !           439: #ifdef CONFIG_SDL
        !           440: DEF("no-frame", 0, QEMU_OPTION_no_frame,
        !           441:     "-no-frame       open SDL window without a frame and window decorations\n")
        !           442: #endif
        !           443: STEXI
        !           444: @item -no-frame
        !           445: 
        !           446: Do not use decorations for SDL windows and start them using the whole
        !           447: available screen space. This makes the using QEMU in a dedicated desktop
        !           448: workspace more convenient.
        !           449: ETEXI
        !           450: 
        !           451: #ifdef CONFIG_SDL
        !           452: DEF("alt-grab", 0, QEMU_OPTION_alt_grab,
        !           453:     "-alt-grab       use Ctrl-Alt-Shift to grab mouse (instead of Ctrl-Alt)\n")
        !           454: #endif
        !           455: STEXI
        !           456: @item -alt-grab
        !           457: 
        !           458: Use Ctrl-Alt-Shift to grab mouse (instead of Ctrl-Alt).
        !           459: ETEXI
        !           460: 
        !           461: #ifdef CONFIG_SDL
        !           462: DEF("no-quit", 0, QEMU_OPTION_no_quit,
        !           463:     "-no-quit        disable SDL window close capability\n")
        !           464: #endif
        !           465: STEXI
        !           466: @item -no-quit
        !           467: 
        !           468: Disable SDL window close capability.
        !           469: ETEXI
        !           470: 
        !           471: #ifdef CONFIG_SDL
        !           472: DEF("sdl", 0, QEMU_OPTION_sdl,
        !           473:     "-sdl            enable SDL\n")
        !           474: #endif
        !           475: STEXI
        !           476: @item -sdl
        !           477: 
        !           478: Enable SDL.
        !           479: ETEXI
        !           480: 
        !           481: DEF("portrait", 0, QEMU_OPTION_portrait,
        !           482:     "-portrait       rotate graphical output 90 deg left (only PXA LCD)\n")
        !           483: STEXI
        !           484: @item -portrait
        !           485: 
        !           486: Rotate graphical output 90 deg left (only PXA LCD).
        !           487: ETEXI
        !           488: 
        !           489: DEF("vga", HAS_ARG, QEMU_OPTION_vga,
        !           490:     "-vga [std|cirrus|vmware|xenfb|none]\n"
        !           491:     "                select video card type\n")
        !           492: STEXI
        !           493: @item -vga @var{type}
        !           494: Select type of VGA card to emulate. Valid values for @var{type} are
        !           495: @table @code
        !           496: @item cirrus
        !           497: Cirrus Logic GD5446 Video card. All Windows versions starting from
        !           498: Windows 95 should recognize and use this graphic card. For optimal
        !           499: performances, use 16 bit color depth in the guest and the host OS.
        !           500: (This one is the default)
        !           501: @item std
        !           502: Standard VGA card with Bochs VBE extensions.  If your guest OS
        !           503: supports the VESA 2.0 VBE extensions (e.g. Windows XP) and if you want
        !           504: to use high resolution modes (>= 1280x1024x16) then you should use
        !           505: this option.
        !           506: @item vmware
        !           507: VMWare SVGA-II compatible adapter. Use it if you have sufficiently
        !           508: recent XFree86/XOrg server or Windows guest with a driver for this
        !           509: card.
        !           510: @item none
        !           511: Disable VGA card.
        !           512: @end table
        !           513: ETEXI
        !           514: 
        !           515: DEF("full-screen", 0, QEMU_OPTION_full_screen,
        !           516:     "-full-screen    start in full screen\n")
        !           517: STEXI
        !           518: @item -full-screen
        !           519: Start in full screen.
        !           520: ETEXI
        !           521: 
        !           522: #if defined(TARGET_PPC) || defined(TARGET_SPARC)
        !           523: DEF("g", 1, QEMU_OPTION_g ,
        !           524:     "-g WxH[xDEPTH]  Set the initial graphical resolution and depth\n")
        !           525: #endif
        !           526: STEXI
        !           527: ETEXI
        !           528: 
        !           529: DEF("vnc", HAS_ARG, QEMU_OPTION_vnc ,
        !           530:     "-vnc display    start a VNC server on display\n")
        !           531: STEXI
        !           532: @item -vnc @var{display}[,@var{option}[,@var{option}[,...]]]
        !           533: 
        !           534: Normally, QEMU uses SDL to display the VGA output.  With this option,
        !           535: you can have QEMU listen on VNC display @var{display} and redirect the VGA
        !           536: display over the VNC session.  It is very useful to enable the usb
        !           537: tablet device when using this option (option @option{-usbdevice
        !           538: tablet}). When using the VNC display, you must use the @option{-k}
        !           539: parameter to set the keyboard layout if you are not using en-us. Valid
        !           540: syntax for the @var{display} is
        !           541: 
        !           542: @table @code
        !           543: 
        !           544: @item @var{host}:@var{d}
        !           545: 
        !           546: TCP connections will only be allowed from @var{host} on display @var{d}.
        !           547: By convention the TCP port is 5900+@var{d}. Optionally, @var{host} can
        !           548: be omitted in which case the server will accept connections from any host.
        !           549: 
        !           550: @item @code{unix}:@var{path}
        !           551: 
        !           552: Connections will be allowed over UNIX domain sockets where @var{path} is the
        !           553: location of a unix socket to listen for connections on.
        !           554: 
        !           555: @item none
        !           556: 
        !           557: VNC is initialized but not started. The monitor @code{change} command
        !           558: can be used to later start the VNC server.
        !           559: 
        !           560: @end table
        !           561: 
        !           562: Following the @var{display} value there may be one or more @var{option} flags
        !           563: separated by commas. Valid options are
        !           564: 
        !           565: @table @code
        !           566: 
        !           567: @item reverse
        !           568: 
        !           569: Connect to a listening VNC client via a ``reverse'' connection. The
        !           570: client is specified by the @var{display}. For reverse network
        !           571: connections (@var{host}:@var{d},@code{reverse}), the @var{d} argument
        !           572: is a TCP port number, not a display number.
        !           573: 
        !           574: @item password
        !           575: 
        !           576: Require that password based authentication is used for client connections.
        !           577: The password must be set separately using the @code{change} command in the
        !           578: @ref{pcsys_monitor}
        !           579: 
        !           580: @item tls
        !           581: 
        !           582: Require that client use TLS when communicating with the VNC server. This
        !           583: uses anonymous TLS credentials so is susceptible to a man-in-the-middle
        !           584: attack. It is recommended that this option be combined with either the
        !           585: @var{x509} or @var{x509verify} options.
        !           586: 
        !           587: @item x509=@var{/path/to/certificate/dir}
        !           588: 
        !           589: Valid if @option{tls} is specified. Require that x509 credentials are used
        !           590: for negotiating the TLS session. The server will send its x509 certificate
        !           591: to the client. It is recommended that a password be set on the VNC server
        !           592: to provide authentication of the client when this is used. The path following
        !           593: this option specifies where the x509 certificates are to be loaded from.
        !           594: See the @ref{vnc_security} section for details on generating certificates.
        !           595: 
        !           596: @item x509verify=@var{/path/to/certificate/dir}
        !           597: 
        !           598: Valid if @option{tls} is specified. Require that x509 credentials are used
        !           599: for negotiating the TLS session. The server will send its x509 certificate
        !           600: to the client, and request that the client send its own x509 certificate.
        !           601: The server will validate the client's certificate against the CA certificate,
        !           602: and reject clients when validation fails. If the certificate authority is
        !           603: trusted, this is a sufficient authentication mechanism. You may still wish
        !           604: to set a password on the VNC server as a second authentication layer. The
        !           605: path following this option specifies where the x509 certificates are to
        !           606: be loaded from. See the @ref{vnc_security} section for details on generating
        !           607: certificates.
        !           608: 
        !           609: @item sasl
        !           610: 
        !           611: Require that the client use SASL to authenticate with the VNC server.
        !           612: The exact choice of authentication method used is controlled from the
        !           613: system / user's SASL configuration file for the 'qemu' service. This
        !           614: is typically found in /etc/sasl2/qemu.conf. If running QEMU as an
        !           615: unprivileged user, an environment variable SASL_CONF_PATH can be used
        !           616: to make it search alternate locations for the service config.
        !           617: While some SASL auth methods can also provide data encryption (eg GSSAPI),
        !           618: it is recommended that SASL always be combined with the 'tls' and
        !           619: 'x509' settings to enable use of SSL and server certificates. This
        !           620: ensures a data encryption preventing compromise of authentication
        !           621: credentials. See the @ref{vnc_security} section for details on using
        !           622: SASL authentication.
        !           623: 
        !           624: @item acl
        !           625: 
        !           626: Turn on access control lists for checking of the x509 client certificate
        !           627: and SASL party. For x509 certs, the ACL check is made against the
        !           628: certificate's distinguished name. This is something that looks like
        !           629: @code{C=GB,O=ACME,L=Boston,CN=bob}. For SASL party, the ACL check is
        !           630: made against the username, which depending on the SASL plugin, may
        !           631: include a realm component, eg @code{bob} or @code{bob@@EXAMPLE.COM}.
        !           632: When the @option{acl} flag is set, the initial access list will be
        !           633: empty, with a @code{deny} policy. Thus no one will be allowed to
        !           634: use the VNC server until the ACLs have been loaded. This can be
        !           635: achieved using the @code{acl} monitor command.
        !           636: 
        !           637: @end table
        !           638: ETEXI
        !           639: 
        !           640: STEXI
        !           641: @end table
        !           642: ETEXI
        !           643: 
        !           644: DEFHEADING()
        !           645: 
        !           646: #ifdef TARGET_I386
        !           647: DEFHEADING(i386 target only:)
        !           648: #endif
        !           649: STEXI
        !           650: @table @option
        !           651: ETEXI
        !           652: 
        !           653: #ifdef TARGET_I386
        !           654: DEF("win2k-hack", 0, QEMU_OPTION_win2k_hack,
        !           655:     "-win2k-hack     use it when installing Windows 2000 to avoid a disk full bug\n")
        !           656: #endif
        !           657: STEXI
        !           658: @item -win2k-hack
        !           659: Use it when installing Windows 2000 to avoid a disk full bug. After
        !           660: Windows 2000 is installed, you no longer need this option (this option
        !           661: slows down the IDE transfers).
        !           662: ETEXI
        !           663: 
        !           664: #ifdef TARGET_I386
        !           665: DEF("rtc-td-hack", 0, QEMU_OPTION_rtc_td_hack,
        !           666:     "-rtc-td-hack    use it to fix time drift in Windows ACPI HAL\n")
        !           667: #endif
        !           668: STEXI
        !           669: @item -rtc-td-hack
        !           670: Use it if you experience time drift problem in Windows with ACPI HAL.
        !           671: This option will try to figure out how many timer interrupts were not
        !           672: processed by the Windows guest and will re-inject them.
        !           673: ETEXI
        !           674: 
        !           675: #ifdef TARGET_I386
        !           676: DEF("no-fd-bootchk", 0, QEMU_OPTION_no_fd_bootchk,
        !           677:     "-no-fd-bootchk  disable boot signature checking for floppy disks\n")
        !           678: #endif
        !           679: STEXI
        !           680: @item -no-fd-bootchk
        !           681: Disable boot signature checking for floppy disks in Bochs BIOS. It may
        !           682: be needed to boot from old floppy disks.
        !           683: ETEXI
        !           684: 
        !           685: #ifdef TARGET_I386
        !           686: DEF("no-acpi", 0, QEMU_OPTION_no_acpi,
        !           687:            "-no-acpi        disable ACPI\n")
        !           688: #endif
        !           689: STEXI
        !           690: @item -no-acpi
        !           691: Disable ACPI (Advanced Configuration and Power Interface) support. Use
        !           692: it if your guest OS complains about ACPI problems (PC target machine
        !           693: only).
        !           694: ETEXI
        !           695: 
        !           696: #ifdef TARGET_I386
        !           697: DEF("no-hpet", 0, QEMU_OPTION_no_hpet,
        !           698:     "-no-hpet        disable HPET\n")
        !           699: #endif
        !           700: STEXI
        !           701: @item -no-hpet
        !           702: Disable HPET support.
        !           703: ETEXI
        !           704: 
        !           705: #ifdef TARGET_I386
        !           706: DEF("balloon", HAS_ARG, QEMU_OPTION_balloon,
        !           707:     "-balloon none   disable balloon device\n"
        !           708:     "-balloon virtio[,addr=str]\n"
        !           709:     "                enable virtio balloon device (default)\n")
        !           710: #endif
        !           711: STEXI
        !           712: @item -balloon none
        !           713: Disable balloon device.
        !           714: @item -balloon virtio[,addr=@var{addr}]
        !           715: Enable virtio balloon device (default), optionally with PCI address
        !           716: @var{addr}.
        !           717: ETEXI
        !           718: 
        !           719: #ifdef TARGET_I386
        !           720: DEF("acpitable", HAS_ARG, QEMU_OPTION_acpitable,
        !           721:     "-acpitable [sig=str][,rev=n][,oem_id=str][,oem_table_id=str][,oem_rev=n][,asl_compiler_id=str][,asl_compiler_rev=n][,data=file1[:file2]...]\n"
        !           722:     "                ACPI table description\n")
        !           723: #endif
        !           724: STEXI
        !           725: @item -acpitable [sig=@var{str}][,rev=@var{n}][,oem_id=@var{str}][,oem_table_id=@var{str}][,oem_rev=@var{n}] [,asl_compiler_id=@var{str}][,asl_compiler_rev=@var{n}][,data=@var{file1}[:@var{file2}]...]
        !           726: Add ACPI table with specified header fields and context from specified files.
        !           727: ETEXI
        !           728: 
        !           729: #ifdef TARGET_I386
        !           730: DEF("smbios", HAS_ARG, QEMU_OPTION_smbios,
        !           731:     "-smbios file=binary\n"
        !           732:     "                Load SMBIOS entry from binary file\n"
        !           733:     "-smbios type=0[,vendor=str][,version=str][,date=str][,release=%%d.%%d]\n"
        !           734:     "                Specify SMBIOS type 0 fields\n"
        !           735:     "-smbios type=1[,manufacturer=str][,product=str][,version=str][,serial=str]\n"
        !           736:     "              [,uuid=uuid][,sku=str][,family=str]\n"
        !           737:     "                Specify SMBIOS type 1 fields\n")
        !           738: #endif
        !           739: STEXI
        !           740: @item -smbios file=@var{binary}
        !           741: Load SMBIOS entry from binary file.
        !           742: 
        !           743: @item -smbios type=0[,vendor=@var{str}][,version=@var{str}][,date=@var{str}][,release=@var{%d.%d}]
        !           744: Specify SMBIOS type 0 fields
        !           745: 
        !           746: @item -smbios type=1[,manufacturer=@var{str}][,product=@var{str}][,version=@var{str}][,serial=@var{str}][,uuid=@var{uuid}][,sku=@var{str}][,family=@var{str}]
        !           747: Specify SMBIOS type 1 fields
        !           748: ETEXI
        !           749: 
        !           750: #ifdef TARGET_I386
        !           751: DEFHEADING()
        !           752: #endif
        !           753: STEXI
        !           754: @end table
        !           755: ETEXI
        !           756: 
        !           757: DEFHEADING(Network options:)
        !           758: STEXI
        !           759: @table @option
        !           760: ETEXI
        !           761: 
        !           762: HXCOMM Legacy slirp options (now moved to -net user):
        !           763: #ifdef CONFIG_SLIRP
        !           764: DEF("tftp", HAS_ARG, QEMU_OPTION_tftp, "")
        !           765: DEF("bootp", HAS_ARG, QEMU_OPTION_bootp, "")
        !           766: DEF("redir", HAS_ARG, QEMU_OPTION_redir, "")
        !           767: #ifndef _WIN32
        !           768: DEF("smb", HAS_ARG, QEMU_OPTION_smb, "")
        !           769: #endif
        !           770: #endif
        !           771: 
        !           772: DEF("net", HAS_ARG, QEMU_OPTION_net,
        !           773:     "-net nic[,vlan=n][,macaddr=mac][,model=type][,name=str][,addr=str][,vectors=v]\n"
        !           774:     "                create a new Network Interface Card and connect it to VLAN 'n'\n"
        !           775: #ifdef CONFIG_SLIRP
        !           776:     "-net user[,vlan=n][,name=str][,net=addr[/mask]][,host=addr][,restrict=y|n]\n"
        !           777:     "         [,hostname=host][,dhcpstart=addr][,dns=addr][,tftp=dir][,bootfile=f]\n"
        !           778:     "         [,hostfwd=rule][,guestfwd=rule]"
        !           779: #ifndef _WIN32
        !           780:                                              "[,smb=dir[,smbserver=addr]]\n"
        !           781: #endif
        !           782:     "                connect the user mode network stack to VLAN 'n', configure its\n"
        !           783:     "                DHCP server and enabled optional services\n"
        !           784: #endif
        !           785: #ifdef _WIN32
        !           786:     "-net tap[,vlan=n][,name=str],ifname=name\n"
        !           787:     "                connect the host TAP network interface to VLAN 'n'\n"
        !           788: #else
        !           789:     "-net tap[,vlan=n][,name=str][,fd=h][,ifname=name][,script=file][,downscript=dfile]"
        !           790: #ifdef TUNSETSNDBUF
        !           791:     "[,sndbuf=nbytes]"
        !           792: #endif
        !           793:     "\n"
        !           794:     "                connect the host TAP network interface to VLAN 'n' and use the\n"
        !           795:     "                network scripts 'file' (default=%s)\n"
        !           796:     "                and 'dfile' (default=%s);\n"
        !           797:     "                use '[down]script=no' to disable script execution;\n"
        !           798:     "                use 'fd=h' to connect to an already opened TAP interface\n"
        !           799: #ifdef TUNSETSNDBUF
        !           800:     "                use 'sndbuf=nbytes' to limit the size of the send buffer; the\n"
        !           801:     "                default of 'sndbuf=1048576' can be disabled using 'sndbuf=0'\n"
        !           802: #endif
        !           803: #endif
        !           804:     "-net socket[,vlan=n][,name=str][,fd=h][,listen=[host]:port][,connect=host:port]\n"
        !           805:     "                connect the vlan 'n' to another VLAN using a socket connection\n"
        !           806:     "-net socket[,vlan=n][,name=str][,fd=h][,mcast=maddr:port]\n"
        !           807:     "                connect the vlan 'n' to multicast maddr and port\n"
        !           808: #ifdef CONFIG_VDE
        !           809:     "-net vde[,vlan=n][,name=str][,sock=socketpath][,port=n][,group=groupname][,mode=octalmode]\n"
        !           810:     "                connect the vlan 'n' to port 'n' of a vde switch running\n"
        !           811:     "                on host and listening for incoming connections on 'socketpath'.\n"
        !           812:     "                Use group 'groupname' and mode 'octalmode' to change default\n"
        !           813:     "                ownership and permissions for communication port.\n"
        !           814: #endif
        !           815:     "-net dump[,vlan=n][,file=f][,len=n]\n"
        !           816:     "                dump traffic on vlan 'n' to file 'f' (max n bytes per packet)\n"
        !           817:     "-net none       use it alone to have zero network devices; if no -net option\n"
        !           818:     "                is provided, the default is '-net nic -net user'\n")
        !           819: STEXI
        !           820: @item -net nic[,vlan=@var{n}][,macaddr=@var{mac}][,model=@var{type}][,name=@var{name}][,addr=@var{addr}][,vectors=@var{v}]
        !           821: Create a new Network Interface Card and connect it to VLAN @var{n} (@var{n}
        !           822: = 0 is the default). The NIC is an ne2k_pci by default on the PC
        !           823: target. Optionally, the MAC address can be changed to @var{mac}, the
        !           824: device address set to @var{addr} (PCI cards only),
        !           825: and a @var{name} can be assigned for use in monitor commands.
        !           826: Optionally, for PCI cards, you can specify the number @var{v} of MSI-X vectors
        !           827: that the card should have; this option currently only affects virtio cards; set
        !           828: @var{v} = 0 to disable MSI-X. If no @option{-net} option is specified, a single
        !           829: NIC is created.  Qemu can emulate several different models of network card.
        !           830: Valid values for @var{type} are
        !           831: @code{virtio}, @code{i82551}, @code{i82557b}, @code{i82559er},
        !           832: @code{ne2k_pci}, @code{ne2k_isa}, @code{pcnet}, @code{rtl8139},
        !           833: @code{e1000}, @code{smc91c111}, @code{lance} and @code{mcf_fec}.
        !           834: Not all devices are supported on all targets.  Use -net nic,model=?
        !           835: for a list of available devices for your target.
        !           836: 
        !           837: @item -net user[,@var{option}][,@var{option}][,...]
        !           838: Use the user mode network stack which requires no administrator
        !           839: privilege to run. Valid options are:
        !           840: 
        !           841: @table @code
        !           842: @item vlan=@var{n}
        !           843: Connect user mode stack to VLAN @var{n} (@var{n} = 0 is the default).
        !           844: 
        !           845: @item name=@var{name}
        !           846: Assign symbolic name for use in monitor commands.
        !           847: 
        !           848: @item net=@var{addr}[/@var{mask}]
        !           849: Set IP network address the guest will see. Optionally specify the netmask,
        !           850: either in the form a.b.c.d or as number of valid top-most bits. Default is
        !           851: 10.0.2.0/8.
        !           852: 
        !           853: @item host=@var{addr}
        !           854: Specify the guest-visible address of the host. Default is the 2nd IP in the
        !           855: guest network, i.e. x.x.x.2.
        !           856: 
        !           857: @item restrict=y|yes|n|no
        !           858: If this options is enabled, the guest will be isolated, i.e. it will not be
        !           859: able to contact the host and no guest IP packets will be routed over the host
        !           860: to the outside. This option does not affect explicitly set forwarding rule.
        !           861: 
        !           862: @item hostname=@var{name}
        !           863: Specifies the client hostname reported by the builtin DHCP server.
        !           864: 
        !           865: @item dhcpstart=@var{addr}
        !           866: Specify the first of the 16 IPs the built-in DHCP server can assign. Default
        !           867: is the 16th to 31st IP in the guest network, i.e. x.x.x.16 to x.x.x.31.
        !           868: 
        !           869: @item dns=@var{addr}
        !           870: Specify the guest-visible address of the virtual nameserver. The address must
        !           871: be different from the host address. Default is the 3rd IP in the guest network,
        !           872: i.e. x.x.x.3.
        !           873: 
        !           874: @item tftp=@var{dir}
        !           875: When using the user mode network stack, activate a built-in TFTP
        !           876: server. The files in @var{dir} will be exposed as the root of a TFTP server.
        !           877: The TFTP client on the guest must be configured in binary mode (use the command
        !           878: @code{bin} of the Unix TFTP client).
        !           879: 
        !           880: @item bootfile=@var{file}
        !           881: When using the user mode network stack, broadcast @var{file} as the BOOTP
        !           882: filename. In conjunction with @option{tftp}, this can be used to network boot
        !           883: a guest from a local directory.
        !           884: 
        !           885: Example (using pxelinux):
        !           886: @example
        !           887: qemu -hda linux.img -boot n -net user,tftp=/path/to/tftp/files,bootfile=/pxelinux.0
        !           888: @end example
        !           889: 
        !           890: @item smb=@var{dir}[,smbserver=@var{addr}]
        !           891: When using the user mode network stack, activate a built-in SMB
        !           892: server so that Windows OSes can access to the host files in @file{@var{dir}}
        !           893: transparently. The IP address of the SMB server can be set to @var{addr}. By
        !           894: default the 4th IP in the guest network is used, i.e. x.x.x.4.
        !           895: 
        !           896: In the guest Windows OS, the line:
        !           897: @example
        !           898: 10.0.2.4 smbserver
        !           899: @end example
        !           900: must be added in the file @file{C:\WINDOWS\LMHOSTS} (for windows 9x/Me)
        !           901: or @file{C:\WINNT\SYSTEM32\DRIVERS\ETC\LMHOSTS} (Windows NT/2000).
        !           902: 
        !           903: Then @file{@var{dir}} can be accessed in @file{\\smbserver\qemu}.
        !           904: 
        !           905: Note that a SAMBA server must be installed on the host OS in
        !           906: @file{/usr/sbin/smbd}. QEMU was tested successfully with smbd versions from
        !           907: Red Hat 9, Fedora Core 3 and OpenSUSE 11.x.
        !           908: 
        !           909: @item hostfwd=[tcp|udp]:[@var{hostaddr}]:@var{hostport}-[@var{guestaddr}]:@var{guestport}
        !           910: Redirect incoming TCP or UDP connections to the host port @var{hostport} to
        !           911: the guest IP address @var{guestaddr} on guest port @var{guestport}. If
        !           912: @var{guestaddr} is not specified, its value is x.x.x.15 (default first address
        !           913: given by the built-in DHCP server). By specifying @var{hostaddr}, the rule can
        !           914: be bound to a specific host interface. If no connection type is set, TCP is
        !           915: used. This option can be given multiple times.
        !           916: 
        !           917: For example, to redirect host X11 connection from screen 1 to guest
        !           918: screen 0, use the following:
        !           919: 
        !           920: @example
        !           921: # on the host
        !           922: qemu -net user,hostfwd=tcp:127.0.0.1:6001-:6000 [...]
        !           923: # this host xterm should open in the guest X11 server
        !           924: xterm -display :1
        !           925: @end example
        !           926: 
        !           927: To redirect telnet connections from host port 5555 to telnet port on
        !           928: the guest, use the following:
        !           929: 
        !           930: @example
        !           931: # on the host
        !           932: qemu -net user,hostfwd=tcp:5555::23 [...]
        !           933: telnet localhost 5555
        !           934: @end example
        !           935: 
        !           936: Then when you use on the host @code{telnet localhost 5555}, you
        !           937: connect to the guest telnet server.
        !           938: 
        !           939: @item guestfwd=[tcp]:@var{server}:@var{port}-@var{dev}
        !           940: Forward guest TCP connections to the IP address @var{server} on port @var{port}
        !           941: to the character device @var{dev}. This option can be given multiple times.
        !           942: 
        !           943: @end table
        !           944: 
        !           945: Note: Legacy stand-alone options -tftp, -bootp, -smb and -redir are still
        !           946: processed and applied to -net user. Mixing them with the new configuration
        !           947: syntax gives undefined results. Their use for new applications is discouraged
        !           948: as they will be removed from future versions.
        !           949: 
        !           950: @item -net tap[,vlan=@var{n}][,name=@var{name}][,fd=@var{h}][,ifname=@var{name}][,script=@var{file}][,downscript=@var{dfile}]
        !           951: Connect the host TAP network interface @var{name} to VLAN @var{n}, use
        !           952: the network script @var{file} to configure it and the network script
        !           953: @var{dfile} to deconfigure it. If @var{name} is not provided, the OS
        !           954: automatically provides one. @option{fd}=@var{h} can be used to specify
        !           955: the handle of an already opened host TAP interface. The default network
        !           956: configure script is @file{/etc/qemu-ifup} and the default network
        !           957: deconfigure script is @file{/etc/qemu-ifdown}. Use @option{script=no}
        !           958: or @option{downscript=no} to disable script execution. Example:
        !           959: 
        !           960: @example
        !           961: qemu linux.img -net nic -net tap
        !           962: @end example
        !           963: 
        !           964: More complicated example (two NICs, each one connected to a TAP device)
        !           965: @example
        !           966: qemu linux.img -net nic,vlan=0 -net tap,vlan=0,ifname=tap0 \
        !           967:                -net nic,vlan=1 -net tap,vlan=1,ifname=tap1
        !           968: @end example
        !           969: 
        !           970: @item -net socket[,vlan=@var{n}][,name=@var{name}][,fd=@var{h}][,listen=[@var{host}]:@var{port}][,connect=@var{host}:@var{port}]
        !           971: 
        !           972: Connect the VLAN @var{n} to a remote VLAN in another QEMU virtual
        !           973: machine using a TCP socket connection. If @option{listen} is
        !           974: specified, QEMU waits for incoming connections on @var{port}
        !           975: (@var{host} is optional). @option{connect} is used to connect to
        !           976: another QEMU instance using the @option{listen} option. @option{fd}=@var{h}
        !           977: specifies an already opened TCP socket.
        !           978: 
        !           979: Example:
        !           980: @example
        !           981: # launch a first QEMU instance
        !           982: qemu linux.img -net nic,macaddr=52:54:00:12:34:56 \
        !           983:                -net socket,listen=:1234
        !           984: # connect the VLAN 0 of this instance to the VLAN 0
        !           985: # of the first instance
        !           986: qemu linux.img -net nic,macaddr=52:54:00:12:34:57 \
        !           987:                -net socket,connect=127.0.0.1:1234
        !           988: @end example
        !           989: 
        !           990: @item -net socket[,vlan=@var{n}][,name=@var{name}][,fd=@var{h}][,mcast=@var{maddr}:@var{port}]
        !           991: 
        !           992: Create a VLAN @var{n} shared with another QEMU virtual
        !           993: machines using a UDP multicast socket, effectively making a bus for
        !           994: every QEMU with same multicast address @var{maddr} and @var{port}.
        !           995: NOTES:
        !           996: @enumerate
        !           997: @item
        !           998: Several QEMU can be running on different hosts and share same bus (assuming
        !           999: correct multicast setup for these hosts).
        !          1000: @item
        !          1001: mcast support is compatible with User Mode Linux (argument @option{eth@var{N}=mcast}), see
        !          1002: @url{http://user-mode-linux.sf.net}.
        !          1003: @item
        !          1004: Use @option{fd=h} to specify an already opened UDP multicast socket.
        !          1005: @end enumerate
        !          1006: 
        !          1007: Example:
        !          1008: @example
        !          1009: # launch one QEMU instance
        !          1010: qemu linux.img -net nic,macaddr=52:54:00:12:34:56 \
        !          1011:                -net socket,mcast=230.0.0.1:1234
        !          1012: # launch another QEMU instance on same "bus"
        !          1013: qemu linux.img -net nic,macaddr=52:54:00:12:34:57 \
        !          1014:                -net socket,mcast=230.0.0.1:1234
        !          1015: # launch yet another QEMU instance on same "bus"
        !          1016: qemu linux.img -net nic,macaddr=52:54:00:12:34:58 \
        !          1017:                -net socket,mcast=230.0.0.1:1234
        !          1018: @end example
        !          1019: 
        !          1020: Example (User Mode Linux compat.):
        !          1021: @example
        !          1022: # launch QEMU instance (note mcast address selected
        !          1023: # is UML's default)
        !          1024: qemu linux.img -net nic,macaddr=52:54:00:12:34:56 \
        !          1025:                -net socket,mcast=239.192.168.1:1102
        !          1026: # launch UML
        !          1027: /path/to/linux ubd0=/path/to/root_fs eth0=mcast
        !          1028: @end example
        !          1029: 
        !          1030: @item -net vde[,vlan=@var{n}][,name=@var{name}][,sock=@var{socketpath}][,port=@var{n}][,group=@var{groupname}][,mode=@var{octalmode}]
        !          1031: Connect VLAN @var{n} to PORT @var{n} of a vde switch running on host and
        !          1032: listening for incoming connections on @var{socketpath}. Use GROUP @var{groupname}
        !          1033: and MODE @var{octalmode} to change default ownership and permissions for
        !          1034: communication port. This option is available only if QEMU has been compiled
        !          1035: with vde support enabled.
        !          1036: 
        !          1037: Example:
        !          1038: @example
        !          1039: # launch vde switch
        !          1040: vde_switch -F -sock /tmp/myswitch
        !          1041: # launch QEMU instance
        !          1042: qemu linux.img -net nic -net vde,sock=/tmp/myswitch
        !          1043: @end example
        !          1044: 
        !          1045: @item -net dump[,vlan=@var{n}][,file=@var{file}][,len=@var{len}]
        !          1046: Dump network traffic on VLAN @var{n} to file @var{file} (@file{qemu-vlan0.pcap} by default).
        !          1047: At most @var{len} bytes (64k by default) per packet are stored. The file format is
        !          1048: libpcap, so it can be analyzed with tools such as tcpdump or Wireshark.
        !          1049: 
        !          1050: @item -net none
        !          1051: Indicate that no network devices should be configured. It is used to
        !          1052: override the default configuration (@option{-net nic -net user}) which
        !          1053: is activated if no @option{-net} options are provided.
        !          1054: 
        !          1055: @end table
        !          1056: ETEXI
        !          1057: 
        !          1058: DEF("bt", HAS_ARG, QEMU_OPTION_bt, \
        !          1059:     "\n" \
        !          1060:     "-bt hci,null    dumb bluetooth HCI - doesn't respond to commands\n" \
        !          1061:     "-bt hci,host[:id]\n" \
        !          1062:     "                use host's HCI with the given name\n" \
        !          1063:     "-bt hci[,vlan=n]\n" \
        !          1064:     "                emulate a standard HCI in virtual scatternet 'n'\n" \
        !          1065:     "-bt vhci[,vlan=n]\n" \
        !          1066:     "                add host computer to virtual scatternet 'n' using VHCI\n" \
        !          1067:     "-bt device:dev[,vlan=n]\n" \
        !          1068:     "                emulate a bluetooth device 'dev' in scatternet 'n'\n")
        !          1069: STEXI
        !          1070: Bluetooth(R) options:
        !          1071: @table @option
        !          1072: 
        !          1073: @item -bt hci[...]
        !          1074: Defines the function of the corresponding Bluetooth HCI.  -bt options
        !          1075: are matched with the HCIs present in the chosen machine type.  For
        !          1076: example when emulating a machine with only one HCI built into it, only
        !          1077: the first @code{-bt hci[...]} option is valid and defines the HCI's
        !          1078: logic.  The Transport Layer is decided by the machine type.  Currently
        !          1079: the machines @code{n800} and @code{n810} have one HCI and all other
        !          1080: machines have none.
        !          1081: 
        !          1082: @anchor{bt-hcis}
        !          1083: The following three types are recognized:
        !          1084: 
        !          1085: @table @code
        !          1086: @item -bt hci,null
        !          1087: (default) The corresponding Bluetooth HCI assumes no internal logic
        !          1088: and will not respond to any HCI commands or emit events.
        !          1089: 
        !          1090: @item -bt hci,host[:@var{id}]
        !          1091: (@code{bluez} only) The corresponding HCI passes commands / events
        !          1092: to / from the physical HCI identified by the name @var{id} (default:
        !          1093: @code{hci0}) on the computer running QEMU.  Only available on @code{bluez}
        !          1094: capable systems like Linux.
        !          1095: 
        !          1096: @item -bt hci[,vlan=@var{n}]
        !          1097: Add a virtual, standard HCI that will participate in the Bluetooth
        !          1098: scatternet @var{n} (default @code{0}).  Similarly to @option{-net}
        !          1099: VLANs, devices inside a bluetooth network @var{n} can only communicate
        !          1100: with other devices in the same network (scatternet).
        !          1101: @end table
        !          1102: 
        !          1103: @item -bt vhci[,vlan=@var{n}]
        !          1104: (Linux-host only) Create a HCI in scatternet @var{n} (default 0) attached
        !          1105: to the host bluetooth stack instead of to the emulated target.  This
        !          1106: allows the host and target machines to participate in a common scatternet
        !          1107: and communicate.  Requires the Linux @code{vhci} driver installed.  Can
        !          1108: be used as following:
        !          1109: 
        !          1110: @example
        !          1111: qemu [...OPTIONS...] -bt hci,vlan=5 -bt vhci,vlan=5
        !          1112: @end example
        !          1113: 
        !          1114: @item -bt device:@var{dev}[,vlan=@var{n}]
        !          1115: Emulate a bluetooth device @var{dev} and place it in network @var{n}
        !          1116: (default @code{0}).  QEMU can only emulate one type of bluetooth devices
        !          1117: currently:
        !          1118: 
        !          1119: @table @code
        !          1120: @item keyboard
        !          1121: Virtual wireless keyboard implementing the HIDP bluetooth profile.
        !          1122: @end table
        !          1123: @end table
        !          1124: ETEXI
        !          1125: 
        !          1126: DEFHEADING()
        !          1127: 
        !          1128: DEFHEADING(Linux/Multiboot boot specific:)
        !          1129: STEXI
        !          1130: 
        !          1131: When using these options, you can use a given Linux or Multiboot
        !          1132: kernel without installing it in the disk image. It can be useful
        !          1133: for easier testing of various kernels.
        !          1134: 
        !          1135: @table @option
        !          1136: ETEXI
        !          1137: 
        !          1138: DEF("kernel", HAS_ARG, QEMU_OPTION_kernel, \
        !          1139:     "-kernel bzImage use 'bzImage' as kernel image\n")
        !          1140: STEXI
        !          1141: @item -kernel @var{bzImage}
        !          1142: Use @var{bzImage} as kernel image. The kernel can be either a Linux kernel
        !          1143: or in multiboot format.
        !          1144: ETEXI
        !          1145: 
        !          1146: DEF("append", HAS_ARG, QEMU_OPTION_append, \
        !          1147:     "-append cmdline use 'cmdline' as kernel command line\n")
        !          1148: STEXI
        !          1149: @item -append @var{cmdline}
        !          1150: Use @var{cmdline} as kernel command line
        !          1151: ETEXI
        !          1152: 
        !          1153: DEF("initrd", HAS_ARG, QEMU_OPTION_initrd, \
        !          1154:            "-initrd file    use 'file' as initial ram disk\n")
        !          1155: STEXI
        !          1156: @item -initrd @var{file}
        !          1157: Use @var{file} as initial ram disk.
        !          1158: 
        !          1159: @item -initrd "@var{file1} arg=foo,@var{file2}"
        !          1160: 
        !          1161: This syntax is only available with multiboot.
        !          1162: 
        !          1163: Use @var{file1} and @var{file2} as modules and pass arg=foo as parameter to the
        !          1164: first module.
        !          1165: ETEXI
        !          1166: 
        !          1167: STEXI
        !          1168: @end table
        !          1169: ETEXI
        !          1170: 
        !          1171: DEFHEADING()
        !          1172: 
        !          1173: DEFHEADING(Debug/Expert options:)
        !          1174: 
        !          1175: STEXI
        !          1176: @table @option
        !          1177: ETEXI
        !          1178: 
        !          1179: DEF("serial", HAS_ARG, QEMU_OPTION_serial, \
        !          1180:     "-serial dev     redirect the serial port to char device 'dev'\n")
        !          1181: STEXI
        !          1182: @item -serial @var{dev}
        !          1183: Redirect the virtual serial port to host character device
        !          1184: @var{dev}. The default device is @code{vc} in graphical mode and
        !          1185: @code{stdio} in non graphical mode.
        !          1186: 
        !          1187: This option can be used several times to simulate up to 4 serial
        !          1188: ports.
        !          1189: 
        !          1190: Use @code{-serial none} to disable all serial ports.
        !          1191: 
        !          1192: Available character devices are:
        !          1193: @table @code
        !          1194: @item vc[:WxH]
        !          1195: Virtual console. Optionally, a width and height can be given in pixel with
        !          1196: @example
        !          1197: vc:800x600
        !          1198: @end example
        !          1199: It is also possible to specify width or height in characters:
        !          1200: @example
        !          1201: vc:80Cx24C
        !          1202: @end example
        !          1203: @item pty
        !          1204: [Linux only] Pseudo TTY (a new PTY is automatically allocated)
        !          1205: @item none
        !          1206: No device is allocated.
        !          1207: @item null
        !          1208: void device
        !          1209: @item /dev/XXX
        !          1210: [Linux only] Use host tty, e.g. @file{/dev/ttyS0}. The host serial port
        !          1211: parameters are set according to the emulated ones.
        !          1212: @item /dev/parport@var{N}
        !          1213: [Linux only, parallel port only] Use host parallel port
        !          1214: @var{N}. Currently SPP and EPP parallel port features can be used.
        !          1215: @item file:@var{filename}
        !          1216: Write output to @var{filename}. No character can be read.
        !          1217: @item stdio
        !          1218: [Unix only] standard input/output
        !          1219: @item pipe:@var{filename}
        !          1220: name pipe @var{filename}
        !          1221: @item COM@var{n}
        !          1222: [Windows only] Use host serial port @var{n}
        !          1223: @item udp:[@var{remote_host}]:@var{remote_port}[@@[@var{src_ip}]:@var{src_port}]
        !          1224: This implements UDP Net Console.
        !          1225: When @var{remote_host} or @var{src_ip} are not specified
        !          1226: they default to @code{0.0.0.0}.
        !          1227: When not using a specified @var{src_port} a random port is automatically chosen.
        !          1228: @item msmouse
        !          1229: Three button serial mouse. Configure the guest to use Microsoft protocol.
        !          1230: 
        !          1231: If you just want a simple readonly console you can use @code{netcat} or
        !          1232: @code{nc}, by starting qemu with: @code{-serial udp::4555} and nc as:
        !          1233: @code{nc -u -l -p 4555}. Any time qemu writes something to that port it
        !          1234: will appear in the netconsole session.
        !          1235: 
        !          1236: If you plan to send characters back via netconsole or you want to stop
        !          1237: and start qemu a lot of times, you should have qemu use the same
        !          1238: source port each time by using something like @code{-serial
        !          1239: udp::4555@@:4556} to qemu. Another approach is to use a patched
        !          1240: version of netcat which can listen to a TCP port and send and receive
        !          1241: characters via udp.  If you have a patched version of netcat which
        !          1242: activates telnet remote echo and single char transfer, then you can
        !          1243: use the following options to step up a netcat redirector to allow
        !          1244: telnet on port 5555 to access the qemu port.
        !          1245: @table @code
        !          1246: @item Qemu Options:
        !          1247: -serial udp::4555@@:4556
        !          1248: @item netcat options:
        !          1249: -u -P 4555 -L 0.0.0.0:4556 -t -p 5555 -I -T
        !          1250: @item telnet options:
        !          1251: localhost 5555
        !          1252: @end table
        !          1253: 
        !          1254: @item tcp:[@var{host}]:@var{port}[,@var{server}][,nowait][,nodelay]
        !          1255: The TCP Net Console has two modes of operation.  It can send the serial
        !          1256: I/O to a location or wait for a connection from a location.  By default
        !          1257: the TCP Net Console is sent to @var{host} at the @var{port}.  If you use
        !          1258: the @var{server} option QEMU will wait for a client socket application
        !          1259: to connect to the port before continuing, unless the @code{nowait}
        !          1260: option was specified.  The @code{nodelay} option disables the Nagle buffering
        !          1261: algorithm.  If @var{host} is omitted, 0.0.0.0 is assumed. Only
        !          1262: one TCP connection at a time is accepted. You can use @code{telnet} to
        !          1263: connect to the corresponding character device.
        !          1264: @table @code
        !          1265: @item Example to send tcp console to 192.168.0.2 port 4444
        !          1266: -serial tcp:192.168.0.2:4444
        !          1267: @item Example to listen and wait on port 4444 for connection
        !          1268: -serial tcp::4444,server
        !          1269: @item Example to not wait and listen on ip 192.168.0.100 port 4444
        !          1270: -serial tcp:192.168.0.100:4444,server,nowait
        !          1271: @end table
        !          1272: 
        !          1273: @item telnet:@var{host}:@var{port}[,server][,nowait][,nodelay]
        !          1274: The telnet protocol is used instead of raw tcp sockets.  The options
        !          1275: work the same as if you had specified @code{-serial tcp}.  The
        !          1276: difference is that the port acts like a telnet server or client using
        !          1277: telnet option negotiation.  This will also allow you to send the
        !          1278: MAGIC_SYSRQ sequence if you use a telnet that supports sending the break
        !          1279: sequence.  Typically in unix telnet you do it with Control-] and then
        !          1280: type "send break" followed by pressing the enter key.
        !          1281: 
        !          1282: @item unix:@var{path}[,server][,nowait]
        !          1283: A unix domain socket is used instead of a tcp socket.  The option works the
        !          1284: same as if you had specified @code{-serial tcp} except the unix domain socket
        !          1285: @var{path} is used for connections.
        !          1286: 
        !          1287: @item mon:@var{dev_string}
        !          1288: This is a special option to allow the monitor to be multiplexed onto
        !          1289: another serial port.  The monitor is accessed with key sequence of
        !          1290: @key{Control-a} and then pressing @key{c}. See monitor access
        !          1291: @ref{pcsys_keys} in the -nographic section for more keys.
        !          1292: @var{dev_string} should be any one of the serial devices specified
        !          1293: above.  An example to multiplex the monitor onto a telnet server
        !          1294: listening on port 4444 would be:
        !          1295: @table @code
        !          1296: @item -serial mon:telnet::4444,server,nowait
        !          1297: @end table
        !          1298: 
        !          1299: @item braille
        !          1300: Braille device.  This will use BrlAPI to display the braille output on a real
        !          1301: or fake device.
        !          1302: 
        !          1303: @end table
        !          1304: ETEXI
        !          1305: 
        !          1306: DEF("parallel", HAS_ARG, QEMU_OPTION_parallel, \
        !          1307:     "-parallel dev   redirect the parallel port to char device 'dev'\n")
        !          1308: STEXI
        !          1309: @item -parallel @var{dev}
        !          1310: Redirect the virtual parallel port to host device @var{dev} (same
        !          1311: devices as the serial port). On Linux hosts, @file{/dev/parportN} can
        !          1312: be used to use hardware devices connected on the corresponding host
        !          1313: parallel port.
        !          1314: 
        !          1315: This option can be used several times to simulate up to 3 parallel
        !          1316: ports.
        !          1317: 
        !          1318: Use @code{-parallel none} to disable all parallel ports.
        !          1319: ETEXI
        !          1320: 
        !          1321: DEF("monitor", HAS_ARG, QEMU_OPTION_monitor, \
        !          1322:     "-monitor dev    redirect the monitor to char device 'dev'\n")
        !          1323: STEXI
        !          1324: @item -monitor @var{dev}
        !          1325: Redirect the monitor to host device @var{dev} (same devices as the
        !          1326: serial port).
        !          1327: The default device is @code{vc} in graphical mode and @code{stdio} in
        !          1328: non graphical mode.
        !          1329: ETEXI
        !          1330: 
        !          1331: DEF("pidfile", HAS_ARG, QEMU_OPTION_pidfile, \
        !          1332:     "-pidfile file   write PID to 'file'\n")
        !          1333: STEXI
        !          1334: @item -pidfile @var{file}
        !          1335: Store the QEMU process PID in @var{file}. It is useful if you launch QEMU
        !          1336: from a script.
        !          1337: ETEXI
        !          1338: 
        !          1339: DEF("singlestep", 0, QEMU_OPTION_singlestep, \
        !          1340:     "-singlestep   always run in singlestep mode\n")
        !          1341: STEXI
        !          1342: @item -singlestep
        !          1343: Run the emulation in single step mode.
        !          1344: ETEXI
        !          1345: 
        !          1346: DEF("S", 0, QEMU_OPTION_S, \
        !          1347:     "-S              freeze CPU at startup (use 'c' to start execution)\n")
        !          1348: STEXI
        !          1349: @item -S
        !          1350: Do not start CPU at startup (you must type 'c' in the monitor).
        !          1351: ETEXI
        !          1352: 
        !          1353: DEF("gdb", HAS_ARG, QEMU_OPTION_gdb, \
        !          1354:     "-gdb dev        wait for gdb connection on 'dev'\n")
        !          1355: STEXI
        !          1356: @item -gdb @var{dev}
        !          1357: Wait for gdb connection on device @var{dev} (@pxref{gdb_usage}). Typical
        !          1358: connections will likely be TCP-based, but also UDP, pseudo TTY, or even
        !          1359: stdio are reasonable use case. The latter is allowing to start qemu from
        !          1360: within gdb and establish the connection via a pipe:
        !          1361: @example
        !          1362: (gdb) target remote | exec qemu -gdb stdio ...
        !          1363: @end example
        !          1364: ETEXI
        !          1365: 
        !          1366: DEF("s", 0, QEMU_OPTION_s, \
        !          1367:     "-s              shorthand for -gdb tcp::%s\n")
        !          1368: STEXI
        !          1369: @item -s
        !          1370: Shorthand for -gdb tcp::1234, i.e. open a gdbserver on TCP port 1234
        !          1371: (@pxref{gdb_usage}).
        !          1372: ETEXI
        !          1373: 
        !          1374: DEF("d", HAS_ARG, QEMU_OPTION_d, \
        !          1375:     "-d item1,...    output log to %s (use -d ? for a list of log items)\n")
        !          1376: STEXI
        !          1377: @item -d
        !          1378: Output log in /tmp/qemu.log
        !          1379: ETEXI
        !          1380: 
        !          1381: DEF("hdachs", HAS_ARG, QEMU_OPTION_hdachs, \
        !          1382:     "-hdachs c,h,s[,t]\n" \
        !          1383:     "                force hard disk 0 physical geometry and the optional BIOS\n" \
        !          1384:     "                translation (t=none or lba) (usually qemu can guess them)\n")
        !          1385: STEXI
        !          1386: @item -hdachs @var{c},@var{h},@var{s},[,@var{t}]
        !          1387: Force hard disk 0 physical geometry (1 <= @var{c} <= 16383, 1 <=
        !          1388: @var{h} <= 16, 1 <= @var{s} <= 63) and optionally force the BIOS
        !          1389: translation mode (@var{t}=none, lba or auto). Usually QEMU can guess
        !          1390: all those parameters. This option is useful for old MS-DOS disk
        !          1391: images.
        !          1392: ETEXI
        !          1393: 
        !          1394: DEF("L", HAS_ARG, QEMU_OPTION_L, \
        !          1395:     "-L path         set the directory for the BIOS, VGA BIOS and keymaps\n")
        !          1396: STEXI
        !          1397: @item -L  @var{path}
        !          1398: Set the directory for the BIOS, VGA BIOS and keymaps.
        !          1399: ETEXI
        !          1400: 
        !          1401: DEF("bios", HAS_ARG, QEMU_OPTION_bios, \
        !          1402:     "-bios file      set the filename for the BIOS\n")
        !          1403: STEXI
        !          1404: @item -bios @var{file}
        !          1405: Set the filename for the BIOS.
        !          1406: ETEXI
        !          1407: 
        !          1408: #ifdef CONFIG_KQEMU
        !          1409: DEF("kernel-kqemu", 0, QEMU_OPTION_kernel_kqemu, \
        !          1410:     "-kernel-kqemu   enable KQEMU full virtualization (default is user mode only)\n")
        !          1411: #endif
        !          1412: STEXI
        !          1413: @item -kernel-kqemu
        !          1414: Enable KQEMU full virtualization (default is user mode only).
        !          1415: ETEXI
        !          1416: 
        !          1417: #ifdef CONFIG_KQEMU
        !          1418: DEF("enable-kqemu", 0, QEMU_OPTION_enable_kqemu, \
        !          1419:     "-enable-kqemu   enable KQEMU kernel module usage\n")
        !          1420: #endif
        !          1421: STEXI
        !          1422: @item -enable-kqemu
        !          1423: Enable KQEMU kernel module usage. KQEMU options are only available if
        !          1424: KQEMU support is enabled when compiling.
        !          1425: ETEXI
        !          1426: 
        !          1427: #ifdef CONFIG_KVM
        !          1428: DEF("enable-kvm", 0, QEMU_OPTION_enable_kvm, \
        !          1429:     "-enable-kvm     enable KVM full virtualization support\n")
        !          1430: #endif
        !          1431: STEXI
        !          1432: @item -enable-kvm
        !          1433: Enable KVM full virtualization support. This option is only available
        !          1434: if KVM support is enabled when compiling.
        !          1435: ETEXI
        !          1436: 
        !          1437: #ifdef CONFIG_XEN
        !          1438: DEF("xen-domid", HAS_ARG, QEMU_OPTION_xen_domid,
        !          1439:     "-xen-domid id   specify xen guest domain id\n")
        !          1440: DEF("xen-create", 0, QEMU_OPTION_xen_create,
        !          1441:     "-xen-create     create domain using xen hypercalls, bypassing xend\n"
        !          1442:     "                warning: should not be used when xend is in use\n")
        !          1443: DEF("xen-attach", 0, QEMU_OPTION_xen_attach,
        !          1444:     "-xen-attach     attach to existing xen domain\n"
        !          1445:     "                xend will use this when starting qemu\n")
        !          1446: #endif
        !          1447: 
        !          1448: DEF("no-reboot", 0, QEMU_OPTION_no_reboot, \
        !          1449:     "-no-reboot      exit instead of rebooting\n")
        !          1450: STEXI
        !          1451: @item -no-reboot
        !          1452: Exit instead of rebooting.
        !          1453: ETEXI
        !          1454: 
        !          1455: DEF("no-shutdown", 0, QEMU_OPTION_no_shutdown, \
        !          1456:     "-no-shutdown    stop before shutdown\n")
        !          1457: STEXI
        !          1458: @item -no-shutdown
        !          1459: Don't exit QEMU on guest shutdown, but instead only stop the emulation.
        !          1460: This allows for instance switching to monitor to commit changes to the
        !          1461: disk image.
        !          1462: ETEXI
        !          1463: 
        !          1464: DEF("loadvm", HAS_ARG, QEMU_OPTION_loadvm, \
        !          1465:     "-loadvm [tag|id]\n" \
        !          1466:     "                start right away with a saved state (loadvm in monitor)\n")
        !          1467: STEXI
        !          1468: @item -loadvm @var{file}
        !          1469: Start right away with a saved state (@code{loadvm} in monitor)
        !          1470: ETEXI
        !          1471: 
        !          1472: #ifndef _WIN32
        !          1473: DEF("daemonize", 0, QEMU_OPTION_daemonize, \
        !          1474:     "-daemonize      daemonize QEMU after initializing\n")
        !          1475: #endif
        !          1476: STEXI
        !          1477: @item -daemonize
        !          1478: Daemonize the QEMU process after initialization.  QEMU will not detach from
        !          1479: standard IO until it is ready to receive connections on any of its devices.
        !          1480: This option is a useful way for external programs to launch QEMU without having
        !          1481: to cope with initialization race conditions.
        !          1482: ETEXI
        !          1483: 
        !          1484: DEF("option-rom", HAS_ARG, QEMU_OPTION_option_rom, \
        !          1485:     "-option-rom rom load a file, rom, into the option ROM space\n")
        !          1486: STEXI
        !          1487: @item -option-rom @var{file}
        !          1488: Load the contents of @var{file} as an option ROM.
        !          1489: This option is useful to load things like EtherBoot.
        !          1490: ETEXI
        !          1491: 
        !          1492: DEF("clock", HAS_ARG, QEMU_OPTION_clock, \
        !          1493:     "-clock          force the use of the given methods for timer alarm.\n" \
        !          1494:     "                To see what timers are available use -clock ?\n")
        !          1495: STEXI
        !          1496: @item -clock @var{method}
        !          1497: Force the use of the given methods for timer alarm. To see what timers
        !          1498: are available use -clock ?.
        !          1499: ETEXI
        !          1500: 
        !          1501: DEF("localtime", 0, QEMU_OPTION_localtime, \
        !          1502:     "-localtime      set the real time clock to local time [default=utc]\n")
        !          1503: STEXI
        !          1504: @item -localtime
        !          1505: Set the real time clock to local time (the default is to UTC
        !          1506: time). This option is needed to have correct date in MS-DOS or
        !          1507: Windows.
        !          1508: ETEXI
        !          1509: 
        !          1510: DEF("startdate", HAS_ARG, QEMU_OPTION_startdate, \
        !          1511:     "-startdate      select initial date of the clock\n")
        !          1512: STEXI
        !          1513: 
        !          1514: @item -startdate @var{date}
        !          1515: Set the initial date of the real time clock. Valid formats for
        !          1516: @var{date} are: @code{now} or @code{2006-06-17T16:01:21} or
        !          1517: @code{2006-06-17}. The default value is @code{now}.
        !          1518: ETEXI
        !          1519: 
        !          1520: DEF("icount", HAS_ARG, QEMU_OPTION_icount, \
        !          1521:     "-icount [N|auto]\n" \
        !          1522:     "                enable virtual instruction counter with 2^N clock ticks per\n" \
        !          1523:     "                instruction\n")
        !          1524: STEXI
        !          1525: @item -icount [N|auto]
        !          1526: Enable virtual instruction counter.  The virtual cpu will execute one
        !          1527: instruction every 2^N ns of virtual time.  If @code{auto} is specified
        !          1528: then the virtual cpu speed will be automatically adjusted to keep virtual
        !          1529: time within a few seconds of real time.
        !          1530: 
        !          1531: Note that while this option can give deterministic behavior, it does not
        !          1532: provide cycle accurate emulation.  Modern CPUs contain superscalar out of
        !          1533: order cores with complex cache hierarchies.  The number of instructions
        !          1534: executed often has little or no correlation with actual performance.
        !          1535: ETEXI
        !          1536: 
        !          1537: DEF("watchdog", HAS_ARG, QEMU_OPTION_watchdog, \
        !          1538:     "-watchdog i6300esb|ib700\n" \
        !          1539:     "                enable virtual hardware watchdog [default=none]\n")
        !          1540: STEXI
        !          1541: @item -watchdog @var{model}
        !          1542: Create a virtual hardware watchdog device.  Once enabled (by a guest
        !          1543: action), the watchdog must be periodically polled by an agent inside
        !          1544: the guest or else the guest will be restarted.
        !          1545: 
        !          1546: The @var{model} is the model of hardware watchdog to emulate.  Choices
        !          1547: for model are: @code{ib700} (iBASE 700) which is a very simple ISA
        !          1548: watchdog with a single timer, or @code{i6300esb} (Intel 6300ESB I/O
        !          1549: controller hub) which is a much more featureful PCI-based dual-timer
        !          1550: watchdog.  Choose a model for which your guest has drivers.
        !          1551: 
        !          1552: Use @code{-watchdog ?} to list available hardware models.  Only one
        !          1553: watchdog can be enabled for a guest.
        !          1554: ETEXI
        !          1555: 
        !          1556: DEF("watchdog-action", HAS_ARG, QEMU_OPTION_watchdog_action, \
        !          1557:     "-watchdog-action reset|shutdown|poweroff|pause|debug|none\n" \
        !          1558:     "                action when watchdog fires [default=reset]\n")
        !          1559: STEXI
        !          1560: @item -watchdog-action @var{action}
        !          1561: 
        !          1562: The @var{action} controls what QEMU will do when the watchdog timer
        !          1563: expires.
        !          1564: The default is
        !          1565: @code{reset} (forcefully reset the guest).
        !          1566: Other possible actions are:
        !          1567: @code{shutdown} (attempt to gracefully shutdown the guest),
        !          1568: @code{poweroff} (forcefully poweroff the guest),
        !          1569: @code{pause} (pause the guest),
        !          1570: @code{debug} (print a debug message and continue), or
        !          1571: @code{none} (do nothing).
        !          1572: 
        !          1573: Note that the @code{shutdown} action requires that the guest responds
        !          1574: to ACPI signals, which it may not be able to do in the sort of
        !          1575: situations where the watchdog would have expired, and thus
        !          1576: @code{-watchdog-action shutdown} is not recommended for production use.
        !          1577: 
        !          1578: Examples:
        !          1579: 
        !          1580: @table @code
        !          1581: @item -watchdog i6300esb -watchdog-action pause
        !          1582: @item -watchdog ib700
        !          1583: @end table
        !          1584: ETEXI
        !          1585: 
        !          1586: DEF("echr", HAS_ARG, QEMU_OPTION_echr, \
        !          1587:     "-echr chr       set terminal escape character instead of ctrl-a\n")
        !          1588: STEXI
        !          1589: 
        !          1590: @item -echr numeric_ascii_value
        !          1591: Change the escape character used for switching to the monitor when using
        !          1592: monitor and serial sharing.  The default is @code{0x01} when using the
        !          1593: @code{-nographic} option.  @code{0x01} is equal to pressing
        !          1594: @code{Control-a}.  You can select a different character from the ascii
        !          1595: control keys where 1 through 26 map to Control-a through Control-z.  For
        !          1596: instance you could use the either of the following to change the escape
        !          1597: character to Control-t.
        !          1598: @table @code
        !          1599: @item -echr 0x14
        !          1600: @item -echr 20
        !          1601: @end table
        !          1602: ETEXI
        !          1603: 
        !          1604: DEF("virtioconsole", HAS_ARG, QEMU_OPTION_virtiocon, \
        !          1605:     "-virtioconsole c\n" \
        !          1606:     "                set virtio console\n")
        !          1607: STEXI
        !          1608: @item -virtioconsole @var{c}
        !          1609: Set virtio console.
        !          1610: ETEXI
        !          1611: 
        !          1612: DEF("show-cursor", 0, QEMU_OPTION_show_cursor, \
        !          1613:     "-show-cursor    show cursor\n")
        !          1614: STEXI
        !          1615: ETEXI
        !          1616: 
        !          1617: DEF("tb-size", HAS_ARG, QEMU_OPTION_tb_size, \
        !          1618:     "-tb-size n      set TB size\n")
        !          1619: STEXI
        !          1620: ETEXI
        !          1621: 
        !          1622: DEF("incoming", HAS_ARG, QEMU_OPTION_incoming, \
        !          1623:     "-incoming p     prepare for incoming migration, listen on port p\n")
        !          1624: STEXI
        !          1625: ETEXI
        !          1626: 
        !          1627: #ifndef _WIN32
        !          1628: DEF("chroot", HAS_ARG, QEMU_OPTION_chroot, \
        !          1629:     "-chroot dir     Chroot to dir just before starting the VM.\n")
        !          1630: #endif
        !          1631: STEXI
        !          1632: @item -chroot dir
        !          1633: Immediately before starting guest execution, chroot to the specified
        !          1634: directory.  Especially useful in combination with -runas.
        !          1635: ETEXI
        !          1636: 
        !          1637: #ifndef _WIN32
        !          1638: DEF("runas", HAS_ARG, QEMU_OPTION_runas, \
        !          1639:     "-runas user     Change to user id user just before starting the VM.\n")
        !          1640: #endif
        !          1641: STEXI
        !          1642: @item -runas user
        !          1643: Immediately before starting guest execution, drop root privileges, switching
        !          1644: to the specified user.
        !          1645: ETEXI
        !          1646: 
        !          1647: STEXI
        !          1648: @end table
        !          1649: ETEXI
        !          1650: 
        !          1651: #if defined(TARGET_SPARC) || defined(TARGET_PPC)
        !          1652: DEF("prom-env", HAS_ARG, QEMU_OPTION_prom_env,
        !          1653:     "-prom-env variable=value\n"
        !          1654:     "                set OpenBIOS nvram variables\n")
        !          1655: #endif
        !          1656: #if defined(TARGET_ARM) || defined(TARGET_M68K)
        !          1657: DEF("semihosting", 0, QEMU_OPTION_semihosting,
        !          1658:     "-semihosting    semihosting mode\n")
        !          1659: #endif
        !          1660: #if defined(TARGET_ARM)
        !          1661: DEF("old-param", 0, QEMU_OPTION_old_param,
        !          1662:     "-old-param      old param mode\n")
        !          1663: #endif

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